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3c2d774c | 1 | /* |
c5488c57 | 2 | * Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved. |
3c2d774c GS |
3 | * |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | * | |
32 | */ | |
33 | ||
34 | ||
35 | #define TCPOPT_TIMESTAMP 8 | |
36 | ||
60063497 | 37 | #include <linux/atomic.h> |
3c2d774c GS |
38 | #include <linux/skbuff.h> |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
41 | #include <linux/init.h> | |
42 | #include <linux/if_arp.h> | |
f2b2b59b | 43 | #include <linux/if_vlan.h> |
3c2d774c GS |
44 | #include <linux/notifier.h> |
45 | #include <linux/net.h> | |
46 | #include <linux/types.h> | |
47 | #include <linux/timer.h> | |
48 | #include <linux/time.h> | |
49 | #include <linux/delay.h> | |
50 | #include <linux/etherdevice.h> | |
51 | #include <linux/netdevice.h> | |
52 | #include <linux/random.h> | |
53 | #include <linux/list.h> | |
54 | #include <linux/threads.h> | |
d2fa9b26 | 55 | #include <linux/highmem.h> |
5a0e3ad6 | 56 | #include <linux/slab.h> |
7191a0a1 | 57 | #include <net/arp.h> |
3c2d774c GS |
58 | #include <net/neighbour.h> |
59 | #include <net/route.h> | |
60 | #include <net/ip_fib.h> | |
c11470f9 | 61 | #include <net/tcp.h> |
3c2d774c GS |
62 | |
63 | #include "nes.h" | |
64 | ||
65 | u32 cm_packets_sent; | |
66 | u32 cm_packets_bounced; | |
67 | u32 cm_packets_dropped; | |
68 | u32 cm_packets_retrans; | |
69 | u32 cm_packets_created; | |
70 | u32 cm_packets_received; | |
6e10d2e4 FL |
71 | atomic_t cm_listens_created; |
72 | atomic_t cm_listens_destroyed; | |
3c2d774c GS |
73 | u32 cm_backlog_drops; |
74 | atomic_t cm_loopbacks; | |
75 | atomic_t cm_nodes_created; | |
76 | atomic_t cm_nodes_destroyed; | |
77 | atomic_t cm_accel_dropped_pkts; | |
78 | atomic_t cm_resets_recvd; | |
79 | ||
615eb715 TN |
80 | static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *); |
81 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *); | |
3c2d774c | 82 | static int mini_cm_del_listen(struct nes_cm_core *, struct nes_cm_listener *); |
615eb715 | 83 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *, struct nes_vnic *, u16, void *, struct nes_cm_info *); |
6492cdf3 | 84 | static int mini_cm_close(struct nes_cm_core *, struct nes_cm_node *); |
615eb715 TN |
85 | static int mini_cm_accept(struct nes_cm_core *, struct nes_cm_node *); |
86 | static int mini_cm_reject(struct nes_cm_core *, struct nes_cm_node *); | |
87 | static int mini_cm_recv_pkt(struct nes_cm_core *, struct nes_vnic *, struct sk_buff *); | |
1a855fbf RD |
88 | static int mini_cm_dealloc_core(struct nes_cm_core *); |
89 | static int mini_cm_get(struct nes_cm_core *); | |
90 | static int mini_cm_set(struct nes_cm_core *, u32, u32); | |
6492cdf3 | 91 | |
615eb715 | 92 | static void form_cm_frame(struct sk_buff *, struct nes_cm_node *, void *, u32, void *, u32, u8); |
6492cdf3 FL |
93 | static int add_ref_cm_node(struct nes_cm_node *); |
94 | static int rem_ref_cm_node(struct nes_cm_core *, struct nes_cm_node *); | |
95 | ||
1a855fbf RD |
96 | static int nes_cm_disconn_true(struct nes_qp *); |
97 | static int nes_cm_post_event(struct nes_cm_event *event); | |
98 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt); | |
99 | static void nes_disconnect_worker(struct work_struct *work); | |
6492cdf3 FL |
100 | |
101 | static int send_mpa_request(struct nes_cm_node *, struct sk_buff *); | |
9d5ab133 | 102 | static int send_mpa_reject(struct nes_cm_node *); |
6492cdf3 FL |
103 | static int send_syn(struct nes_cm_node *, u32, struct sk_buff *); |
104 | static int send_reset(struct nes_cm_node *, struct sk_buff *); | |
105 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb); | |
1a855fbf | 106 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb); |
615eb715 | 107 | static void process_packet(struct nes_cm_node *, struct sk_buff *, struct nes_cm_core *); |
6492cdf3 FL |
108 | |
109 | static void active_open_err(struct nes_cm_node *, struct sk_buff *, int); | |
110 | static void passive_open_err(struct nes_cm_node *, struct sk_buff *, int); | |
111 | static void cleanup_retrans_entry(struct nes_cm_node *); | |
9d5ab133 | 112 | static void handle_rcv_mpa(struct nes_cm_node *, struct sk_buff *); |
6492cdf3 | 113 | static void free_retrans_entry(struct nes_cm_node *cm_node); |
615eb715 | 114 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, struct sk_buff *skb, int optionsize, int passive); |
6492cdf3 FL |
115 | |
116 | /* CM event handler functions */ | |
117 | static void cm_event_connected(struct nes_cm_event *); | |
118 | static void cm_event_connect_error(struct nes_cm_event *); | |
119 | static void cm_event_reset(struct nes_cm_event *); | |
120 | static void cm_event_mpa_req(struct nes_cm_event *); | |
9d5ab133 FL |
121 | static void cm_event_mpa_reject(struct nes_cm_event *); |
122 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node); | |
6492cdf3 | 123 | |
615eb715 TN |
124 | /* MPA build functions */ |
125 | static int cm_build_mpa_frame(struct nes_cm_node *, u8 **, u16 *, u8 *, u8); | |
126 | static void build_mpa_v2(struct nes_cm_node *, void *, u8); | |
127 | static void build_mpa_v1(struct nes_cm_node *, void *, u8); | |
128 | static void build_rdma0_msg(struct nes_cm_node *, struct nes_qp **); | |
129 | ||
6492cdf3 | 130 | static void print_core(struct nes_cm_core *core); |
3c2d774c GS |
131 | |
132 | /* External CM API Interface */ | |
133 | /* instance of function pointers for client API */ | |
134 | /* set address of this instance to cm_core->cm_ops at cm_core alloc */ | |
135 | static struct nes_cm_ops nes_cm_api = { | |
136 | mini_cm_accelerated, | |
137 | mini_cm_listen, | |
138 | mini_cm_del_listen, | |
139 | mini_cm_connect, | |
140 | mini_cm_close, | |
141 | mini_cm_accept, | |
142 | mini_cm_reject, | |
143 | mini_cm_recv_pkt, | |
144 | mini_cm_dealloc_core, | |
145 | mini_cm_get, | |
146 | mini_cm_set | |
147 | }; | |
148 | ||
1a855fbf | 149 | static struct nes_cm_core *g_cm_core; |
3c2d774c GS |
150 | |
151 | atomic_t cm_connects; | |
152 | atomic_t cm_accepts; | |
153 | atomic_t cm_disconnects; | |
154 | atomic_t cm_closes; | |
155 | atomic_t cm_connecteds; | |
156 | atomic_t cm_connect_reqs; | |
157 | atomic_t cm_rejects; | |
158 | ||
0f0bee8b FL |
159 | int nes_add_ref_cm_node(struct nes_cm_node *cm_node) |
160 | { | |
161 | return add_ref_cm_node(cm_node); | |
162 | } | |
163 | ||
164 | int nes_rem_ref_cm_node(struct nes_cm_node *cm_node) | |
165 | { | |
166 | return rem_ref_cm_node(cm_node->cm_core, cm_node); | |
167 | } | |
3c2d774c GS |
168 | |
169 | /** | |
170 | * create_event | |
171 | */ | |
615eb715 TN |
172 | static struct nes_cm_event *create_event(struct nes_cm_node * cm_node, |
173 | enum nes_cm_event_type type) | |
3c2d774c GS |
174 | { |
175 | struct nes_cm_event *event; | |
176 | ||
177 | if (!cm_node->cm_id) | |
178 | return NULL; | |
179 | ||
180 | /* allocate an empty event */ | |
181 | event = kzalloc(sizeof(*event), GFP_ATOMIC); | |
182 | ||
183 | if (!event) | |
184 | return NULL; | |
185 | ||
186 | event->type = type; | |
187 | event->cm_node = cm_node; | |
188 | event->cm_info.rem_addr = cm_node->rem_addr; | |
189 | event->cm_info.loc_addr = cm_node->loc_addr; | |
190 | event->cm_info.rem_port = cm_node->rem_port; | |
191 | event->cm_info.loc_port = cm_node->loc_port; | |
192 | event->cm_info.cm_id = cm_node->cm_id; | |
193 | ||
6492cdf3 | 194 | nes_debug(NES_DBG_CM, "cm_node=%p Created event=%p, type=%u, " |
615eb715 TN |
195 | "dst_addr=%08x[%x], src_addr=%08x[%x]\n", |
196 | cm_node, event, type, event->cm_info.loc_addr, | |
197 | event->cm_info.loc_port, event->cm_info.rem_addr, | |
198 | event->cm_info.rem_port); | |
3c2d774c GS |
199 | |
200 | nes_cm_post_event(event); | |
201 | return event; | |
202 | } | |
203 | ||
204 | ||
205 | /** | |
206 | * send_mpa_request | |
207 | */ | |
6492cdf3 | 208 | static int send_mpa_request(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c | 209 | { |
615eb715 TN |
210 | u8 start_addr = 0; |
211 | u8 *start_ptr = &start_addr; | |
212 | u8 **start_buff = &start_ptr; | |
213 | u16 buff_len = 0; | |
214 | ||
3c2d774c | 215 | if (!skb) { |
6492cdf3 | 216 | nes_debug(NES_DBG_CM, "skb set to NULL\n"); |
3c2d774c GS |
217 | return -1; |
218 | } | |
219 | ||
220 | /* send an MPA Request frame */ | |
615eb715 TN |
221 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REQUEST); |
222 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK); | |
3c2d774c | 223 | |
9d5ab133 FL |
224 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); |
225 | } | |
3c2d774c | 226 | |
9d5ab133 FL |
227 | |
228 | ||
229 | static int send_mpa_reject(struct nes_cm_node *cm_node) | |
230 | { | |
615eb715 TN |
231 | struct sk_buff *skb = NULL; |
232 | u8 start_addr = 0; | |
233 | u8 *start_ptr = &start_addr; | |
234 | u8 **start_buff = &start_ptr; | |
235 | u16 buff_len = 0; | |
81f99dcc | 236 | struct ietf_mpa_v1 *mpa_frame; |
9d5ab133 FL |
237 | |
238 | skb = dev_alloc_skb(MAX_CM_BUFFER); | |
239 | if (!skb) { | |
240 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
241 | return -ENOMEM; | |
242 | } | |
243 | ||
244 | /* send an MPA reject frame */ | |
615eb715 | 245 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, NULL, MPA_KEY_REPLY); |
81f99dcc TN |
246 | mpa_frame = (struct ietf_mpa_v1 *)*start_buff; |
247 | mpa_frame->flags |= IETF_MPA_FLAGS_REJECT; | |
615eb715 | 248 | form_cm_frame(skb, cm_node, NULL, 0, *start_buff, buff_len, SET_ACK | SET_FIN); |
9d5ab133 FL |
249 | |
250 | cm_node->state = NES_CM_STATE_FIN_WAIT1; | |
251 | return schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
3c2d774c GS |
252 | } |
253 | ||
254 | ||
255 | /** | |
256 | * recv_mpa - process a received TCP pkt, we are expecting an | |
257 | * IETF MPA frame | |
258 | */ | |
9d5ab133 | 259 | static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type, |
615eb715 | 260 | u32 len) |
3c2d774c | 261 | { |
615eb715 TN |
262 | struct ietf_mpa_v1 *mpa_frame; |
263 | struct ietf_mpa_v2 *mpa_v2_frame; | |
264 | struct ietf_rtr_msg *rtr_msg; | |
265 | int mpa_hdr_len; | |
266 | int priv_data_len; | |
3c2d774c | 267 | |
9d5ab133 FL |
268 | *type = NES_MPA_REQUEST_ACCEPT; |
269 | ||
3c2d774c | 270 | /* assume req frame is in tcp data payload */ |
615eb715 | 271 | if (len < sizeof(struct ietf_mpa_v1)) { |
3c2d774c | 272 | nes_debug(NES_DBG_CM, "The received ietf buffer was too small (%x)\n", len); |
9d5ab133 | 273 | return -EINVAL; |
3c2d774c GS |
274 | } |
275 | ||
615eb715 TN |
276 | /* points to the beginning of the frame, which could be MPA V1 or V2 */ |
277 | mpa_frame = (struct ietf_mpa_v1 *)buffer; | |
278 | mpa_hdr_len = sizeof(struct ietf_mpa_v1); | |
279 | priv_data_len = ntohs(mpa_frame->priv_data_len); | |
280 | ||
1cf078c9 | 281 | /* make sure mpa private data len is less than 512 bytes */ |
615eb715 | 282 | if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) { |
1cf078c9 | 283 | nes_debug(NES_DBG_CM, "The received Length of Private" |
615eb715 | 284 | " Data field exceeds 512 octets\n"); |
1cf078c9 FL |
285 | return -EINVAL; |
286 | } | |
287 | /* | |
288 | * make sure MPA receiver interoperate with the | |
289 | * received MPA version and MPA key information | |
290 | * | |
291 | */ | |
615eb715 TN |
292 | if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) { |
293 | nes_debug(NES_DBG_CM, "The received mpa version" | |
294 | " is not supported\n"); | |
295 | return -EINVAL; | |
296 | } | |
297 | /* | |
298 | * backwards compatibility only | |
299 | */ | |
300 | if (mpa_frame->rev > cm_node->mpa_frame_rev) { | |
1cf078c9 | 301 | nes_debug(NES_DBG_CM, "The received mpa version" |
615eb715 | 302 | " can not be interoperated\n"); |
1cf078c9 | 303 | return -EINVAL; |
615eb715 TN |
304 | } else { |
305 | cm_node->mpa_frame_rev = mpa_frame->rev; | |
1cf078c9 | 306 | } |
615eb715 | 307 | |
1cf078c9 FL |
308 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { |
309 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) { | |
310 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
311 | return -EINVAL; | |
312 | } | |
313 | } else { | |
314 | if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) { | |
315 | nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n"); | |
316 | return -EINVAL; | |
317 | } | |
318 | } | |
3c2d774c | 319 | |
615eb715 TN |
320 | |
321 | if (priv_data_len + mpa_hdr_len != len) { | |
3c2d774c | 322 | nes_debug(NES_DBG_CM, "The received ietf buffer was not right" |
615eb715 TN |
323 | " complete (%x + %x != %x)\n", |
324 | priv_data_len, mpa_hdr_len, len); | |
9d5ab133 FL |
325 | return -EINVAL; |
326 | } | |
327 | /* make sure it does not exceed the max size */ | |
328 | if (len > MAX_CM_BUFFER) { | |
329 | nes_debug(NES_DBG_CM, "The received ietf buffer was too large" | |
615eb715 TN |
330 | " (%x + %x != %x)\n", |
331 | priv_data_len, mpa_hdr_len, len); | |
9d5ab133 | 332 | return -EINVAL; |
3c2d774c GS |
333 | } |
334 | ||
615eb715 TN |
335 | cm_node->mpa_frame_size = priv_data_len; |
336 | ||
337 | switch (mpa_frame->rev) { | |
338 | case IETF_MPA_V2: { | |
339 | u16 ird_size; | |
340 | u16 ord_size; | |
8dd87fba TN |
341 | u16 rtr_ctrl_ird; |
342 | u16 rtr_ctrl_ord; | |
343 | ||
615eb715 TN |
344 | mpa_v2_frame = (struct ietf_mpa_v2 *)buffer; |
345 | mpa_hdr_len += IETF_RTR_MSG_SIZE; | |
346 | cm_node->mpa_frame_size -= IETF_RTR_MSG_SIZE; | |
347 | rtr_msg = &mpa_v2_frame->rtr_msg; | |
348 | ||
349 | /* parse rtr message */ | |
8dd87fba TN |
350 | rtr_ctrl_ird = ntohs(rtr_msg->ctrl_ird); |
351 | rtr_ctrl_ord = ntohs(rtr_msg->ctrl_ord); | |
352 | ird_size = rtr_ctrl_ird & IETF_NO_IRD_ORD; | |
353 | ord_size = rtr_ctrl_ord & IETF_NO_IRD_ORD; | |
615eb715 | 354 | |
8dd87fba | 355 | if (!(rtr_ctrl_ird & IETF_PEER_TO_PEER)) { |
615eb715 TN |
356 | /* send reset */ |
357 | return -EINVAL; | |
358 | } | |
359 | ||
360 | if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) { | |
361 | /* responder */ | |
362 | if (cm_node->ord_size > ird_size) | |
363 | cm_node->ord_size = ird_size; | |
364 | } else { | |
365 | /* initiator */ | |
366 | if (cm_node->ord_size > ird_size) | |
367 | cm_node->ord_size = ird_size; | |
368 | ||
369 | if (cm_node->ird_size < ord_size) { | |
370 | /* no resources available */ | |
371 | /* send terminate message */ | |
372 | return -EINVAL; | |
373 | } | |
374 | } | |
375 | ||
8dd87fba | 376 | if (rtr_ctrl_ord & IETF_RDMA0_READ) { |
615eb715 | 377 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; |
8dd87fba | 378 | } else if (rtr_ctrl_ord & IETF_RDMA0_WRITE) { |
615eb715 TN |
379 | cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO; |
380 | } else { /* Not supported RDMA0 operation */ | |
381 | return -EINVAL; | |
382 | } | |
383 | break; | |
384 | } | |
385 | case IETF_MPA_V1: | |
386 | default: | |
387 | break; | |
388 | } | |
389 | ||
3c2d774c | 390 | /* copy entire MPA frame to our cm_node's frame */ |
615eb715 | 391 | memcpy(cm_node->mpa_frame_buf, buffer + mpa_hdr_len, cm_node->mpa_frame_size); |
3c2d774c | 392 | |
9d5ab133 FL |
393 | if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT) |
394 | *type = NES_MPA_REQUEST_REJECT; | |
3c2d774c GS |
395 | return 0; |
396 | } | |
397 | ||
398 | ||
3c2d774c GS |
399 | /** |
400 | * form_cm_frame - get a free packet and build empty frame Use | |
401 | * node info to build. | |
402 | */ | |
6098d107 | 403 | static void form_cm_frame(struct sk_buff *skb, |
615eb715 TN |
404 | struct nes_cm_node *cm_node, void *options, u32 optionsize, |
405 | void *data, u32 datasize, u8 flags) | |
3c2d774c GS |
406 | { |
407 | struct tcphdr *tcph; | |
408 | struct iphdr *iph; | |
409 | struct ethhdr *ethh; | |
410 | u8 *buf; | |
411 | u16 packetsize = sizeof(*iph); | |
412 | ||
413 | packetsize += sizeof(*tcph); | |
615eb715 | 414 | packetsize += optionsize + datasize; |
3c2d774c | 415 | |
615eb715 | 416 | skb_trim(skb, 0); |
3c2d774c GS |
417 | memset(skb->data, 0x00, ETH_HLEN + sizeof(*iph) + sizeof(*tcph)); |
418 | ||
3c2d774c GS |
419 | buf = skb_put(skb, packetsize + ETH_HLEN); |
420 | ||
615eb715 | 421 | ethh = (struct ethhdr *)buf; |
3c2d774c GS |
422 | buf += ETH_HLEN; |
423 | ||
424 | iph = (struct iphdr *)buf; | |
425 | buf += sizeof(*iph); | |
426 | tcph = (struct tcphdr *)buf; | |
427 | skb_reset_mac_header(skb); | |
428 | skb_set_network_header(skb, ETH_HLEN); | |
615eb715 | 429 | skb_set_transport_header(skb, ETH_HLEN + sizeof(*iph)); |
3c2d774c GS |
430 | buf += sizeof(*tcph); |
431 | ||
432 | skb->ip_summed = CHECKSUM_PARTIAL; | |
fc4ba729 TN |
433 | if (!(cm_node->netdev->features & NETIF_F_IP_CSUM)) |
434 | skb->ip_summed = CHECKSUM_NONE; | |
3c2d774c GS |
435 | skb->protocol = htons(0x800); |
436 | skb->data_len = 0; | |
437 | skb->mac_len = ETH_HLEN; | |
438 | ||
439 | memcpy(ethh->h_dest, cm_node->rem_mac, ETH_ALEN); | |
440 | memcpy(ethh->h_source, cm_node->loc_mac, ETH_ALEN); | |
441 | ethh->h_proto = htons(0x0800); | |
442 | ||
443 | iph->version = IPVERSION; | |
615eb715 | 444 | iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ |
3c2d774c GS |
445 | iph->tos = 0; |
446 | iph->tot_len = htons(packetsize); | |
447 | iph->id = htons(++cm_node->tcp_cntxt.loc_id); | |
448 | ||
449 | iph->frag_off = htons(0x4000); | |
450 | iph->ttl = 0x40; | |
615eb715 | 451 | iph->protocol = 0x06; /* IPPROTO_TCP */ |
3c2d774c GS |
452 | |
453 | iph->saddr = htonl(cm_node->loc_addr); | |
454 | iph->daddr = htonl(cm_node->rem_addr); | |
455 | ||
456 | tcph->source = htons(cm_node->loc_port); | |
457 | tcph->dest = htons(cm_node->rem_port); | |
458 | tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num); | |
459 | ||
460 | if (flags & SET_ACK) { | |
461 | cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt; | |
462 | tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); | |
463 | tcph->ack = 1; | |
615eb715 | 464 | } else { |
3c2d774c | 465 | tcph->ack_seq = 0; |
615eb715 | 466 | } |
3c2d774c GS |
467 | |
468 | if (flags & SET_SYN) { | |
469 | cm_node->tcp_cntxt.loc_seq_num++; | |
470 | tcph->syn = 1; | |
615eb715 | 471 | } else { |
6492cdf3 | 472 | cm_node->tcp_cntxt.loc_seq_num += datasize; |
615eb715 | 473 | } |
3c2d774c | 474 | |
6492cdf3 FL |
475 | if (flags & SET_FIN) { |
476 | cm_node->tcp_cntxt.loc_seq_num++; | |
3c2d774c | 477 | tcph->fin = 1; |
6492cdf3 | 478 | } |
3c2d774c GS |
479 | |
480 | if (flags & SET_RST) | |
481 | tcph->rst = 1; | |
482 | ||
483 | tcph->doff = (u16)((sizeof(*tcph) + optionsize + 3) >> 2); | |
484 | tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); | |
485 | tcph->urg_ptr = 0; | |
486 | if (optionsize) | |
487 | memcpy(buf, options, optionsize); | |
488 | buf += optionsize; | |
489 | if (datasize) | |
490 | memcpy(buf, data, datasize); | |
491 | ||
492 | skb_shinfo(skb)->nr_frags = 0; | |
493 | cm_packets_created++; | |
3c2d774c GS |
494 | } |
495 | ||
3c2d774c GS |
496 | /** |
497 | * print_core - dump a cm core | |
498 | */ | |
499 | static void print_core(struct nes_cm_core *core) | |
500 | { | |
501 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
502 | nes_debug(NES_DBG_CM, "CM Core -- (core = %p )\n", core); | |
503 | if (!core) | |
504 | return; | |
505 | nes_debug(NES_DBG_CM, "---------------------------------------------\n"); | |
3c2d774c | 506 | |
615eb715 | 507 | nes_debug(NES_DBG_CM, "State : %u \n", core->state); |
3c2d774c | 508 | |
3c2d774c GS |
509 | nes_debug(NES_DBG_CM, "Listen Nodes : %u \n", atomic_read(&core->listen_node_cnt)); |
510 | nes_debug(NES_DBG_CM, "Active Nodes : %u \n", atomic_read(&core->node_cnt)); | |
511 | ||
512 | nes_debug(NES_DBG_CM, "core : %p \n", core); | |
513 | ||
514 | nes_debug(NES_DBG_CM, "-------------- end core ---------------\n"); | |
515 | } | |
516 | ||
615eb715 TN |
517 | /** |
518 | * cm_build_mpa_frame - build a MPA V1 frame or MPA V2 frame | |
519 | */ | |
520 | static int cm_build_mpa_frame(struct nes_cm_node *cm_node, u8 **start_buff, | |
521 | u16 *buff_len, u8 *pci_mem, u8 mpa_key) | |
522 | { | |
523 | int ret = 0; | |
524 | ||
525 | *start_buff = (pci_mem) ? pci_mem : &cm_node->mpa_frame_buf[0]; | |
526 | ||
527 | switch (cm_node->mpa_frame_rev) { | |
528 | case IETF_MPA_V1: | |
529 | *start_buff = (u8 *)*start_buff + sizeof(struct ietf_rtr_msg); | |
530 | *buff_len = sizeof(struct ietf_mpa_v1) + cm_node->mpa_frame_size; | |
531 | build_mpa_v1(cm_node, *start_buff, mpa_key); | |
532 | break; | |
533 | case IETF_MPA_V2: | |
534 | *buff_len = sizeof(struct ietf_mpa_v2) + cm_node->mpa_frame_size; | |
535 | build_mpa_v2(cm_node, *start_buff, mpa_key); | |
536 | break; | |
537 | default: | |
538 | ret = -EINVAL; | |
539 | } | |
540 | return ret; | |
541 | } | |
542 | ||
543 | /** | |
544 | * build_mpa_v2 - build a MPA V2 frame | |
545 | */ | |
546 | static void build_mpa_v2(struct nes_cm_node *cm_node, | |
547 | void *start_addr, u8 mpa_key) | |
548 | { | |
549 | struct ietf_mpa_v2 *mpa_frame = (struct ietf_mpa_v2 *)start_addr; | |
550 | struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; | |
8dd87fba TN |
551 | u16 ctrl_ird; |
552 | u16 ctrl_ord; | |
615eb715 TN |
553 | |
554 | /* initialize the upper 5 bytes of the frame */ | |
555 | build_mpa_v1(cm_node, start_addr, mpa_key); | |
556 | mpa_frame->flags |= IETF_MPA_V2_FLAG; /* set a bit to indicate MPA V2 */ | |
557 | mpa_frame->priv_data_len += htons(IETF_RTR_MSG_SIZE); | |
558 | ||
559 | /* initialize RTR msg */ | |
8dd87fba | 560 | ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ? |
615eb715 | 561 | IETF_NO_IRD_ORD : cm_node->ird_size; |
8dd87fba | 562 | ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ? |
615eb715 TN |
563 | IETF_NO_IRD_ORD : cm_node->ord_size; |
564 | ||
8dd87fba TN |
565 | ctrl_ird |= IETF_PEER_TO_PEER; |
566 | ctrl_ird |= IETF_FLPDU_ZERO_LEN; | |
615eb715 TN |
567 | |
568 | switch (mpa_key) { | |
569 | case MPA_KEY_REQUEST: | |
8dd87fba TN |
570 | ctrl_ord |= IETF_RDMA0_WRITE; |
571 | ctrl_ord |= IETF_RDMA0_READ; | |
615eb715 TN |
572 | break; |
573 | case MPA_KEY_REPLY: | |
574 | switch (cm_node->send_rdma0_op) { | |
575 | case SEND_RDMA_WRITE_ZERO: | |
8dd87fba | 576 | ctrl_ord |= IETF_RDMA0_WRITE; |
615eb715 TN |
577 | break; |
578 | case SEND_RDMA_READ_ZERO: | |
8dd87fba | 579 | ctrl_ord |= IETF_RDMA0_READ; |
615eb715 TN |
580 | break; |
581 | } | |
582 | } | |
8dd87fba TN |
583 | rtr_msg->ctrl_ird = htons(ctrl_ird); |
584 | rtr_msg->ctrl_ord = htons(ctrl_ord); | |
615eb715 TN |
585 | } |
586 | ||
587 | /** | |
588 | * build_mpa_v1 - build a MPA V1 frame | |
589 | */ | |
590 | static void build_mpa_v1(struct nes_cm_node *cm_node, void *start_addr, u8 mpa_key) | |
591 | { | |
592 | struct ietf_mpa_v1 *mpa_frame = (struct ietf_mpa_v1 *)start_addr; | |
593 | ||
594 | switch (mpa_key) { | |
595 | case MPA_KEY_REQUEST: | |
596 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE); | |
597 | break; | |
598 | case MPA_KEY_REPLY: | |
599 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); | |
600 | break; | |
601 | } | |
602 | mpa_frame->flags = IETF_MPA_FLAGS_CRC; | |
603 | mpa_frame->rev = cm_node->mpa_frame_rev; | |
604 | mpa_frame->priv_data_len = htons(cm_node->mpa_frame_size); | |
605 | } | |
606 | ||
607 | static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_addr) | |
608 | { | |
609 | u64 u64temp; | |
610 | struct nes_qp *nesqp = *nesqp_addr; | |
611 | struct nes_hw_qp_wqe *wqe = &nesqp->hwqp.sq_vbase[0]; | |
612 | ||
613 | u64temp = (unsigned long)nesqp; | |
614 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; | |
615 | set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, u64temp); | |
616 | ||
617 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_LOW_IDX] = 0; | |
618 | wqe->wqe_words[NES_IWARP_SQ_WQE_FRAG0_HIGH_IDX] = 0; | |
619 | ||
620 | switch (cm_node->send_rdma0_op) { | |
621 | case SEND_RDMA_WRITE_ZERO: | |
622 | nes_debug(NES_DBG_CM, "Sending first write.\n"); | |
623 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
624 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAW); | |
625 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = 0; | |
626 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = 0; | |
627 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 0; | |
628 | break; | |
629 | ||
630 | case SEND_RDMA_READ_ZERO: | |
631 | default: | |
079abea6 JL |
632 | if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) |
633 | WARN(1, "Unsupported RDMA0 len operation=%u\n", | |
634 | cm_node->send_rdma0_op); | |
615eb715 TN |
635 | nes_debug(NES_DBG_CM, "Sending first rdma operation.\n"); |
636 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = | |
637 | cpu_to_le32(NES_IWARP_SQ_OP_RDMAR); | |
638 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX] = 1; | |
639 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_TO_HIGH_IDX] = 0; | |
640 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 0; | |
641 | wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_STAG_IDX] = 1; | |
642 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = 1; | |
643 | break; | |
644 | } | |
645 | ||
646 | if (nesqp->sq_kmapped) { | |
647 | nesqp->sq_kmapped = 0; | |
648 | kunmap(nesqp->page); | |
649 | } | |
650 | ||
651 | /*use the reserved spot on the WQ for the extra first WQE*/ | |
652 | nesqp->nesqp_context->ird_ord_sizes &= cpu_to_le32(~(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
653 | NES_QPCONTEXT_ORDIRD_WRPDU | | |
654 | NES_QPCONTEXT_ORDIRD_ALSMM)); | |
655 | nesqp->skip_lsmm = 1; | |
656 | nesqp->hwqp.sq_tail = 0; | |
657 | } | |
3c2d774c GS |
658 | |
659 | /** | |
660 | * schedule_nes_timer | |
661 | * note - cm_node needs to be protected before calling this. Encase in: | |
662 | * rem_ref_cm_node(cm_core, cm_node);add_ref_cm_node(cm_node); | |
663 | */ | |
664 | int schedule_nes_timer(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 TN |
665 | enum nes_timer_type type, int send_retrans, |
666 | int close_when_complete) | |
3c2d774c | 667 | { |
615eb715 | 668 | unsigned long flags; |
6492cdf3 | 669 | struct nes_cm_core *cm_core = cm_node->cm_core; |
3c2d774c GS |
670 | struct nes_timer_entry *new_send; |
671 | int ret = 0; | |
672 | u32 was_timer_set; | |
673 | ||
674 | new_send = kzalloc(sizeof(*new_send), GFP_ATOMIC); | |
675 | if (!new_send) | |
9d5ab133 | 676 | return -ENOMEM; |
3c2d774c GS |
677 | |
678 | /* new_send->timetosend = currenttime */ | |
679 | new_send->retrycount = NES_DEFAULT_RETRYS; | |
680 | new_send->retranscount = NES_DEFAULT_RETRANS; | |
681 | new_send->skb = skb; | |
682 | new_send->timetosend = jiffies; | |
683 | new_send->type = type; | |
684 | new_send->netdev = cm_node->netdev; | |
685 | new_send->send_retrans = send_retrans; | |
686 | new_send->close_when_complete = close_when_complete; | |
687 | ||
688 | if (type == NES_TIMER_TYPE_CLOSE) { | |
615eb715 | 689 | new_send->timetosend += (HZ / 10); |
9d5ab133 | 690 | if (cm_node->recv_entry) { |
79fc3d74 | 691 | kfree(new_send); |
9d5ab133 FL |
692 | WARN_ON(1); |
693 | return -EINVAL; | |
694 | } | |
695 | cm_node->recv_entry = new_send; | |
3c2d774c GS |
696 | } |
697 | ||
698 | if (type == NES_TIMER_TYPE_SEND) { | |
b30db1c1 | 699 | new_send->seq_num = ntohl(tcp_hdr(skb)->seq); |
3c2d774c | 700 | atomic_inc(&new_send->skb->users); |
6492cdf3 FL |
701 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
702 | cm_node->send_entry = new_send; | |
703 | add_ref_cm_node(cm_node); | |
704 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
705 | new_send->timetosend = jiffies + NES_RETRY_TIMEOUT; | |
3c2d774c GS |
706 | |
707 | ret = nes_nic_cm_xmit(new_send->skb, cm_node->netdev); | |
708 | if (ret != NETDEV_TX_OK) { | |
6492cdf3 | 709 | nes_debug(NES_DBG_CM, "Error sending packet %p " |
615eb715 | 710 | "(jiffies = %lu)\n", new_send, jiffies); |
3c2d774c | 711 | new_send->timetosend = jiffies; |
5962c2c8 | 712 | ret = NETDEV_TX_OK; |
3c2d774c GS |
713 | } else { |
714 | cm_packets_sent++; | |
715 | if (!send_retrans) { | |
6492cdf3 | 716 | cleanup_retrans_entry(cm_node); |
3c2d774c | 717 | if (close_when_complete) |
6492cdf3 | 718 | rem_ref_cm_node(cm_core, cm_node); |
3c2d774c GS |
719 | return ret; |
720 | } | |
3c2d774c | 721 | } |
3c2d774c | 722 | } |
3c2d774c GS |
723 | |
724 | was_timer_set = timer_pending(&cm_core->tcp_timer); | |
725 | ||
726 | if (!was_timer_set) { | |
727 | cm_core->tcp_timer.expires = new_send->timetosend; | |
728 | add_timer(&cm_core->tcp_timer); | |
729 | } | |
730 | ||
731 | return ret; | |
732 | } | |
733 | ||
9d5ab133 FL |
734 | static void nes_retrans_expired(struct nes_cm_node *cm_node) |
735 | { | |
68237a0f | 736 | struct iw_cm_id *cm_id = cm_node->cm_id; |
dae58728 FL |
737 | enum nes_cm_node_state state = cm_node->state; |
738 | cm_node->state = NES_CM_STATE_CLOSED; | |
615eb715 | 739 | |
dae58728 | 740 | switch (state) { |
9d5ab133 FL |
741 | case NES_CM_STATE_SYN_RCVD: |
742 | case NES_CM_STATE_CLOSING: | |
743 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
744 | break; | |
745 | case NES_CM_STATE_LAST_ACK: | |
746 | case NES_CM_STATE_FIN_WAIT1: | |
68237a0f FL |
747 | if (cm_node->cm_id) |
748 | cm_id->rem_ref(cm_id); | |
9d5ab133 FL |
749 | send_reset(cm_node, NULL); |
750 | break; | |
751 | default: | |
69524e1a FL |
752 | add_ref_cm_node(cm_node); |
753 | send_reset(cm_node, NULL); | |
9d5ab133 FL |
754 | create_event(cm_node, NES_CM_EVENT_ABORTED); |
755 | } | |
756 | } | |
757 | ||
758 | static void handle_recv_entry(struct nes_cm_node *cm_node, u32 rem_node) | |
759 | { | |
760 | struct nes_timer_entry *recv_entry = cm_node->recv_entry; | |
761 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
762 | struct nes_qp *nesqp; | |
763 | unsigned long qplockflags; | |
764 | ||
765 | if (!recv_entry) | |
766 | return; | |
767 | nesqp = (struct nes_qp *)recv_entry->skb; | |
768 | if (nesqp) { | |
769 | spin_lock_irqsave(&nesqp->lock, qplockflags); | |
770 | if (nesqp->cm_id) { | |
771 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
772 | "refcount = %d: HIT A " |
773 | "NES_TIMER_TYPE_CLOSE with something " | |
774 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
775 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
776 | nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; |
777 | nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; | |
778 | nesqp->ibqp_state = IB_QPS_ERR; | |
779 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
780 | nes_cm_disconn(nesqp); | |
781 | } else { | |
782 | spin_unlock_irqrestore(&nesqp->lock, qplockflags); | |
783 | nes_debug(NES_DBG_CM, "QP%u: cm_id = %p, " | |
615eb715 TN |
784 | "refcount = %d: HIT A " |
785 | "NES_TIMER_TYPE_CLOSE with nothing " | |
786 | "to do!!!\n", nesqp->hwqp.qp_id, cm_id, | |
787 | atomic_read(&nesqp->refcount)); | |
9d5ab133 FL |
788 | } |
789 | } else if (rem_node) { | |
790 | /* TIME_WAIT state */ | |
791 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
792 | } | |
793 | if (cm_node->cm_id) | |
794 | cm_id->rem_ref(cm_id); | |
795 | kfree(recv_entry); | |
796 | cm_node->recv_entry = NULL; | |
797 | } | |
3c2d774c GS |
798 | |
799 | /** | |
800 | * nes_cm_timer_tick | |
801 | */ | |
1a855fbf | 802 | static void nes_cm_timer_tick(unsigned long pass) |
3c2d774c | 803 | { |
9d5ab133 | 804 | unsigned long flags; |
3c2d774c | 805 | unsigned long nexttimeout = jiffies + NES_LONG_TIME; |
3c2d774c GS |
806 | struct nes_cm_node *cm_node; |
807 | struct nes_timer_entry *send_entry, *recv_entry; | |
9d5ab133 FL |
808 | struct list_head *list_core_temp; |
809 | struct list_head *list_node; | |
3c2d774c | 810 | struct nes_cm_core *cm_core = g_cm_core; |
3c2d774c | 811 | u32 settimer = 0; |
4e9c3900 | 812 | unsigned long timetosend; |
3c2d774c | 813 | int ret = NETDEV_TX_OK; |
3c2d774c | 814 | |
879e5bd5 | 815 | struct list_head timer_list; |
615eb715 | 816 | |
879e5bd5 | 817 | INIT_LIST_HEAD(&timer_list); |
3c2d774c GS |
818 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
819 | ||
6492cdf3 | 820 | list_for_each_safe(list_node, list_core_temp, |
615eb715 | 821 | &cm_core->connected_nodes) { |
3c2d774c | 822 | cm_node = container_of(list_node, struct nes_cm_node, list); |
9d5ab133 | 823 | if ((cm_node->recv_entry) || (cm_node->send_entry)) { |
879e5bd5 FL |
824 | add_ref_cm_node(cm_node); |
825 | list_add(&cm_node->timer_entry, &timer_list); | |
826 | } | |
827 | } | |
828 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
829 | ||
830 | list_for_each_safe(list_node, list_core_temp, &timer_list) { | |
831 | cm_node = container_of(list_node, struct nes_cm_node, | |
615eb715 | 832 | timer_entry); |
9d5ab133 FL |
833 | recv_entry = cm_node->recv_entry; |
834 | ||
835 | if (recv_entry) { | |
6492cdf3 FL |
836 | if (time_after(recv_entry->timetosend, jiffies)) { |
837 | if (nexttimeout > recv_entry->timetosend || | |
615eb715 | 838 | !settimer) { |
3c2d774c GS |
839 | nexttimeout = recv_entry->timetosend; |
840 | settimer = 1; | |
841 | } | |
615eb715 | 842 | } else { |
9d5ab133 | 843 | handle_recv_entry(cm_node, 1); |
615eb715 | 844 | } |
3c2d774c | 845 | } |
3c2d774c GS |
846 | |
847 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); | |
6492cdf3 FL |
848 | do { |
849 | send_entry = cm_node->send_entry; | |
850 | if (!send_entry) | |
c5d321e5 | 851 | break; |
3c2d774c GS |
852 | if (time_after(send_entry->timetosend, jiffies)) { |
853 | if (cm_node->state != NES_CM_STATE_TSA) { | |
6492cdf3 | 854 | if ((nexttimeout > |
615eb715 TN |
855 | send_entry->timetosend) || |
856 | !settimer) { | |
6492cdf3 FL |
857 | nexttimeout = |
858 | send_entry->timetosend; | |
3c2d774c GS |
859 | settimer = 1; |
860 | } | |
3c2d774c | 861 | } else { |
6492cdf3 | 862 | free_retrans_entry(cm_node); |
3c2d774c | 863 | } |
9d5ab133 | 864 | break; |
3c2d774c | 865 | } |
6492cdf3 FL |
866 | |
867 | if ((cm_node->state == NES_CM_STATE_TSA) || | |
615eb715 | 868 | (cm_node->state == NES_CM_STATE_CLOSED)) { |
6492cdf3 | 869 | free_retrans_entry(cm_node); |
c5d321e5 | 870 | break; |
3c2d774c GS |
871 | } |
872 | ||
6492cdf3 | 873 | if (!send_entry->retranscount || |
615eb715 | 874 | !send_entry->retrycount) { |
3c2d774c | 875 | cm_packets_dropped++; |
6492cdf3 | 876 | free_retrans_entry(cm_node); |
9d5ab133 | 877 | |
6492cdf3 FL |
878 | spin_unlock_irqrestore( |
879 | &cm_node->retrans_list_lock, flags); | |
9d5ab133 FL |
880 | nes_retrans_expired(cm_node); |
881 | cm_node->state = NES_CM_STATE_CLOSED; | |
6492cdf3 | 882 | spin_lock_irqsave(&cm_node->retrans_list_lock, |
615eb715 | 883 | flags); |
c5d321e5 | 884 | break; |
3c2d774c | 885 | } |
3c2d774c GS |
886 | atomic_inc(&send_entry->skb->users); |
887 | cm_packets_retrans++; | |
6492cdf3 | 888 | nes_debug(NES_DBG_CM, "Retransmitting send_entry %p " |
615eb715 TN |
889 | "for node %p, jiffies = %lu, time to send = " |
890 | "%lu, retranscount = %u, send_entry->seq_num = " | |
891 | "0x%08X, cm_node->tcp_cntxt.rem_ack_num = " | |
892 | "0x%08X\n", send_entry, cm_node, jiffies, | |
893 | send_entry->timetosend, | |
894 | send_entry->retranscount, | |
895 | send_entry->seq_num, | |
896 | cm_node->tcp_cntxt.rem_ack_num); | |
6492cdf3 FL |
897 | |
898 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, | |
615eb715 | 899 | flags); |
3c2d774c | 900 | ret = nes_nic_cm_xmit(send_entry->skb, cm_node->netdev); |
6492cdf3 | 901 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
3c2d774c | 902 | if (ret != NETDEV_TX_OK) { |
6492cdf3 | 903 | nes_debug(NES_DBG_CM, "rexmit failed for " |
615eb715 | 904 | "node=%p\n", cm_node); |
3c2d774c | 905 | cm_packets_bounced++; |
3c2d774c GS |
906 | send_entry->retrycount--; |
907 | nexttimeout = jiffies + NES_SHORT_TIME; | |
908 | settimer = 1; | |
c5d321e5 | 909 | break; |
3c2d774c GS |
910 | } else { |
911 | cm_packets_sent++; | |
912 | } | |
6492cdf3 | 913 | nes_debug(NES_DBG_CM, "Packet Sent: retrans count = " |
615eb715 TN |
914 | "%u, retry count = %u.\n", |
915 | send_entry->retranscount, | |
916 | send_entry->retrycount); | |
3c2d774c GS |
917 | if (send_entry->send_retrans) { |
918 | send_entry->retranscount--; | |
4e9c3900 | 919 | timetosend = (NES_RETRY_TIMEOUT << |
615eb715 | 920 | (NES_DEFAULT_RETRANS - send_entry->retranscount)); |
4e9c3900 | 921 | |
6492cdf3 | 922 | send_entry->timetosend = jiffies + |
615eb715 | 923 | min(timetosend, NES_MAX_TIMEOUT); |
6492cdf3 | 924 | if (nexttimeout > send_entry->timetosend || |
615eb715 | 925 | !settimer) { |
3c2d774c GS |
926 | nexttimeout = send_entry->timetosend; |
927 | settimer = 1; | |
928 | } | |
3c2d774c GS |
929 | } else { |
930 | int close_when_complete; | |
6492cdf3 FL |
931 | close_when_complete = |
932 | send_entry->close_when_complete; | |
933 | nes_debug(NES_DBG_CM, "cm_node=%p state=%d\n", | |
615eb715 | 934 | cm_node, cm_node->state); |
6492cdf3 FL |
935 | free_retrans_entry(cm_node); |
936 | if (close_when_complete) | |
937 | rem_ref_cm_node(cm_node->cm_core, | |
615eb715 | 938 | cm_node); |
3c2d774c | 939 | } |
6492cdf3 | 940 | } while (0); |
3c2d774c | 941 | |
6492cdf3 FL |
942 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); |
943 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 944 | } |
3c2d774c GS |
945 | |
946 | if (settimer) { | |
947 | if (!timer_pending(&cm_core->tcp_timer)) { | |
615eb715 | 948 | cm_core->tcp_timer.expires = nexttimeout; |
3c2d774c GS |
949 | add_timer(&cm_core->tcp_timer); |
950 | } | |
951 | } | |
952 | } | |
953 | ||
954 | ||
955 | /** | |
956 | * send_syn | |
957 | */ | |
6492cdf3 | 958 | static int send_syn(struct nes_cm_node *cm_node, u32 sendack, |
615eb715 | 959 | struct sk_buff *skb) |
3c2d774c GS |
960 | { |
961 | int ret; | |
962 | int flags = SET_SYN; | |
3c2d774c | 963 | char optionsbuffer[sizeof(struct option_mss) + |
615eb715 TN |
964 | sizeof(struct option_windowscale) + sizeof(struct option_base) + |
965 | TCP_OPTIONS_PADDING]; | |
3c2d774c GS |
966 | |
967 | int optionssize = 0; | |
968 | /* Sending MSS option */ | |
969 | union all_known_options *options; | |
970 | ||
971 | if (!cm_node) | |
972 | return -EINVAL; | |
973 | ||
974 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
975 | options->as_mss.optionnum = OPTION_NUMBER_MSS; | |
976 | options->as_mss.length = sizeof(struct option_mss); | |
977 | options->as_mss.mss = htons(cm_node->tcp_cntxt.mss); | |
978 | optionssize += sizeof(struct option_mss); | |
979 | ||
980 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
981 | options->as_windowscale.optionnum = OPTION_NUMBER_WINDOW_SCALE; | |
982 | options->as_windowscale.length = sizeof(struct option_windowscale); | |
983 | options->as_windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale; | |
984 | optionssize += sizeof(struct option_windowscale); | |
985 | ||
6492cdf3 | 986 | if (sendack && !(NES_DRV_OPT_SUPRESS_OPTION_BC & nes_drv_opt)) { |
3c2d774c GS |
987 | options = (union all_known_options *)&optionsbuffer[optionssize]; |
988 | options->as_base.optionnum = OPTION_NUMBER_WRITE0; | |
989 | options->as_base.length = sizeof(struct option_base); | |
990 | optionssize += sizeof(struct option_base); | |
991 | /* we need the size to be a multiple of 4 */ | |
992 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
993 | options->as_end = 1; | |
994 | optionssize += 1; | |
995 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
996 | options->as_end = 1; | |
997 | optionssize += 1; | |
998 | } | |
999 | ||
1000 | options = (union all_known_options *)&optionsbuffer[optionssize]; | |
1001 | options->as_end = OPTION_NUMBER_END; | |
1002 | optionssize += 1; | |
1003 | ||
6492cdf3 | 1004 | if (!skb) |
e189062a | 1005 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1006 | if (!skb) { |
1007 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1008 | return -1; | |
1009 | } | |
1010 | ||
1011 | if (sendack) | |
1012 | flags |= SET_ACK; | |
1013 | ||
1014 | form_cm_frame(skb, cm_node, optionsbuffer, optionssize, NULL, 0, flags); | |
1015 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1016 | ||
1017 | return ret; | |
1018 | } | |
1019 | ||
1020 | ||
1021 | /** | |
1022 | * send_reset | |
1023 | */ | |
6492cdf3 | 1024 | static int send_reset(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1025 | { |
1026 | int ret; | |
3c2d774c GS |
1027 | int flags = SET_RST | SET_ACK; |
1028 | ||
6492cdf3 | 1029 | if (!skb) |
e189062a | 1030 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1031 | if (!skb) { |
1032 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
9d5ab133 | 1033 | return -ENOMEM; |
3c2d774c GS |
1034 | } |
1035 | ||
3c2d774c GS |
1036 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, flags); |
1037 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 1); | |
1038 | ||
1039 | return ret; | |
1040 | } | |
1041 | ||
1042 | ||
1043 | /** | |
1044 | * send_ack | |
1045 | */ | |
6492cdf3 | 1046 | static int send_ack(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1047 | { |
1048 | int ret; | |
6492cdf3 FL |
1049 | |
1050 | if (!skb) | |
e189062a | 1051 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1052 | |
1053 | if (!skb) { | |
1054 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1055 | return -1; | |
1056 | } | |
1057 | ||
1058 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK); | |
1059 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 0, 0); | |
1060 | ||
1061 | return ret; | |
1062 | } | |
1063 | ||
1064 | ||
1065 | /** | |
1066 | * send_fin | |
1067 | */ | |
1a855fbf | 1068 | static int send_fin(struct nes_cm_node *cm_node, struct sk_buff *skb) |
3c2d774c GS |
1069 | { |
1070 | int ret; | |
1071 | ||
1072 | /* if we didn't get a frame get one */ | |
1073 | if (!skb) | |
e189062a | 1074 | skb = dev_alloc_skb(MAX_CM_BUFFER); |
3c2d774c GS |
1075 | |
1076 | if (!skb) { | |
1077 | nes_debug(NES_DBG_CM, "Failed to get a Free pkt\n"); | |
1078 | return -1; | |
1079 | } | |
1080 | ||
1081 | form_cm_frame(skb, cm_node, NULL, 0, NULL, 0, SET_ACK | SET_FIN); | |
1082 | ret = schedule_nes_timer(cm_node, skb, NES_TIMER_TYPE_SEND, 1, 0); | |
1083 | ||
1084 | return ret; | |
1085 | } | |
1086 | ||
1087 | ||
3c2d774c GS |
1088 | /** |
1089 | * find_node - find a cm node that matches the reference cm node | |
1090 | */ | |
1091 | static struct nes_cm_node *find_node(struct nes_cm_core *cm_core, | |
615eb715 | 1092 | u16 rem_port, nes_addr_t rem_addr, u16 loc_port, nes_addr_t loc_addr) |
3c2d774c GS |
1093 | { |
1094 | unsigned long flags; | |
3c2d774c GS |
1095 | struct list_head *hte; |
1096 | struct nes_cm_node *cm_node; | |
1097 | ||
3c2d774c GS |
1098 | /* get a handle on the hte */ |
1099 | hte = &cm_core->connected_nodes; | |
1100 | ||
3c2d774c GS |
1101 | /* walk list and find cm_node associated with this session ID */ |
1102 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
4e96a774 | 1103 | list_for_each_entry(cm_node, hte, list) { |
3c2d774c GS |
1104 | /* compare quad, return node handle if a match */ |
1105 | nes_debug(NES_DBG_CM, "finding node %x:%x =? %x:%x ^ %x:%x =? %x:%x\n", | |
615eb715 TN |
1106 | cm_node->loc_addr, cm_node->loc_port, |
1107 | loc_addr, loc_port, | |
1108 | cm_node->rem_addr, cm_node->rem_port, | |
1109 | rem_addr, rem_port); | |
3c2d774c | 1110 | if ((cm_node->loc_addr == loc_addr) && (cm_node->loc_port == loc_port) && |
615eb715 | 1111 | (cm_node->rem_addr == rem_addr) && (cm_node->rem_port == rem_port)) { |
3c2d774c GS |
1112 | add_ref_cm_node(cm_node); |
1113 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1114 | return cm_node; | |
1115 | } | |
1116 | } | |
1117 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1118 | ||
1119 | /* no owner node */ | |
1120 | return NULL; | |
1121 | } | |
1122 | ||
1123 | ||
1124 | /** | |
1125 | * find_listener - find a cm node listening on this addr-port pair | |
1126 | */ | |
1127 | static struct nes_cm_listener *find_listener(struct nes_cm_core *cm_core, | |
615eb715 | 1128 | nes_addr_t dst_addr, u16 dst_port, enum nes_cm_listener_state listener_state) |
3c2d774c GS |
1129 | { |
1130 | unsigned long flags; | |
3c2d774c GS |
1131 | struct nes_cm_listener *listen_node; |
1132 | ||
1133 | /* walk list and find cm_node associated with this session ID */ | |
1134 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
4e96a774 | 1135 | list_for_each_entry(listen_node, &cm_core->listen_list.list, list) { |
3c2d774c GS |
1136 | /* compare node pair, return node handle if a match */ |
1137 | if (((listen_node->loc_addr == dst_addr) || | |
615eb715 TN |
1138 | listen_node->loc_addr == 0x00000000) && |
1139 | (listen_node->loc_port == dst_port) && | |
1140 | (listener_state & listen_node->listener_state)) { | |
3c2d774c GS |
1141 | atomic_inc(&listen_node->ref_count); |
1142 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1143 | return listen_node; | |
1144 | } | |
1145 | } | |
1146 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1147 | ||
3c2d774c GS |
1148 | /* no listener */ |
1149 | return NULL; | |
1150 | } | |
1151 | ||
1152 | ||
1153 | /** | |
1154 | * add_hte_node - add a cm node to the hash table | |
1155 | */ | |
1156 | static int add_hte_node(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) | |
1157 | { | |
1158 | unsigned long flags; | |
3c2d774c GS |
1159 | struct list_head *hte; |
1160 | ||
1161 | if (!cm_node || !cm_core) | |
1162 | return -EINVAL; | |
1163 | ||
6492cdf3 | 1164 | nes_debug(NES_DBG_CM, "Adding Node %p to Active Connection HT\n", |
615eb715 | 1165 | cm_node); |
3c2d774c | 1166 | |
3c2d774c GS |
1167 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
1168 | ||
1169 | /* get a handle on the hash table element (list head for this slot) */ | |
1170 | hte = &cm_core->connected_nodes; | |
1171 | list_add_tail(&cm_node->list, hte); | |
1172 | atomic_inc(&cm_core->ht_node_cnt); | |
1173 | ||
1174 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1175 | ||
1176 | return 0; | |
1177 | } | |
1178 | ||
1179 | ||
1180 | /** | |
1181 | * mini_cm_dec_refcnt_listen | |
1182 | */ | |
1183 | static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1184 | struct nes_cm_listener *listener, int free_hanging_nodes) |
3c2d774c | 1185 | { |
9d5ab133 FL |
1186 | int ret = -EINVAL; |
1187 | int err = 0; | |
3c2d774c | 1188 | unsigned long flags; |
6492cdf3 FL |
1189 | struct list_head *list_pos = NULL; |
1190 | struct list_head *list_temp = NULL; | |
1191 | struct nes_cm_node *cm_node = NULL; | |
879e5bd5 | 1192 | struct list_head reset_list; |
6492cdf3 FL |
1193 | |
1194 | nes_debug(NES_DBG_CM, "attempting listener= %p free_nodes= %d, " | |
615eb715 TN |
1195 | "refcnt=%d\n", listener, free_hanging_nodes, |
1196 | atomic_read(&listener->ref_count)); | |
6492cdf3 | 1197 | /* free non-accelerated child nodes for this listener */ |
879e5bd5 | 1198 | INIT_LIST_HEAD(&reset_list); |
6492cdf3 FL |
1199 | if (free_hanging_nodes) { |
1200 | spin_lock_irqsave(&cm_core->ht_lock, flags); | |
1201 | list_for_each_safe(list_pos, list_temp, | |
879e5bd5 | 1202 | &g_cm_core->connected_nodes) { |
6492cdf3 | 1203 | cm_node = container_of(list_pos, struct nes_cm_node, |
615eb715 | 1204 | list); |
6492cdf3 | 1205 | if ((cm_node->listener == listener) && |
879e5bd5 FL |
1206 | (!cm_node->accelerated)) { |
1207 | add_ref_cm_node(cm_node); | |
1208 | list_add(&cm_node->reset_entry, &reset_list); | |
6492cdf3 FL |
1209 | } |
1210 | } | |
1211 | spin_unlock_irqrestore(&cm_core->ht_lock, flags); | |
1212 | } | |
879e5bd5 FL |
1213 | |
1214 | list_for_each_safe(list_pos, list_temp, &reset_list) { | |
1215 | cm_node = container_of(list_pos, struct nes_cm_node, | |
615eb715 | 1216 | reset_entry); |
9d5ab133 FL |
1217 | { |
1218 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
c5a7d489 | 1219 | enum nes_cm_node_state old_state; |
9d5ab133 FL |
1220 | if (NES_CM_STATE_FIN_WAIT1 <= cm_node->state) { |
1221 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1222 | } else { | |
1223 | if (!loopback) { | |
1224 | cleanup_retrans_entry(cm_node); | |
1225 | err = send_reset(cm_node, NULL); | |
1226 | if (err) { | |
1227 | cm_node->state = | |
615eb715 | 1228 | NES_CM_STATE_CLOSED; |
9d5ab133 FL |
1229 | WARN_ON(1); |
1230 | } else { | |
c5a7d489 FL |
1231 | old_state = cm_node->state; |
1232 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; | |
1233 | if (old_state != NES_CM_STATE_MPAREQ_RCVD) | |
1234 | rem_ref_cm_node( | |
1235 | cm_node->cm_core, | |
1236 | cm_node); | |
9d5ab133 FL |
1237 | } |
1238 | } else { | |
1239 | struct nes_cm_event event; | |
1240 | ||
1241 | event.cm_node = loopback; | |
1242 | event.cm_info.rem_addr = | |
1243 | loopback->rem_addr; | |
1244 | event.cm_info.loc_addr = | |
1245 | loopback->loc_addr; | |
1246 | event.cm_info.rem_port = | |
1247 | loopback->rem_port; | |
1248 | event.cm_info.loc_port = | |
1249 | loopback->loc_port; | |
1250 | event.cm_info.cm_id = loopback->cm_id; | |
43093b94 FL |
1251 | add_ref_cm_node(loopback); |
1252 | loopback->state = NES_CM_STATE_CLOSED; | |
9d5ab133 | 1253 | cm_event_connect_error(&event); |
c5a7d489 | 1254 | cm_node->state = NES_CM_STATE_LISTENER_DESTROYED; |
9d5ab133 | 1255 | |
9d5ab133 FL |
1256 | rem_ref_cm_node(cm_node->cm_core, |
1257 | cm_node); | |
1258 | ||
1259 | } | |
1260 | } | |
1261 | } | |
879e5bd5 FL |
1262 | } |
1263 | ||
3c2d774c GS |
1264 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
1265 | if (!atomic_dec_return(&listener->ref_count)) { | |
1266 | list_del(&listener->list); | |
1267 | ||
1268 | /* decrement our listen node count */ | |
1269 | atomic_dec(&cm_core->listen_node_cnt); | |
1270 | ||
1271 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1272 | ||
615eb715 | 1273 | if (listener->nesvnic) |
3c2d774c | 1274 | nes_manage_apbvt(listener->nesvnic, listener->loc_port, |
615eb715 | 1275 | PCI_FUNC(listener->nesvnic->nesdev->pcidev->devfn), NES_MANAGE_APBVT_DEL); |
3c2d774c GS |
1276 | |
1277 | nes_debug(NES_DBG_CM, "destroying listener (%p)\n", listener); | |
1278 | ||
1279 | kfree(listener); | |
a2e9c384 | 1280 | listener = NULL; |
3c2d774c | 1281 | ret = 0; |
6e10d2e4 | 1282 | atomic_inc(&cm_listens_destroyed); |
3c2d774c GS |
1283 | } else { |
1284 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
1285 | } | |
1286 | if (listener) { | |
1287 | if (atomic_read(&listener->pend_accepts_cnt) > 0) | |
1288 | nes_debug(NES_DBG_CM, "destroying listener (%p)" | |
615eb715 TN |
1289 | " with non-zero pending accepts=%u\n", |
1290 | listener, atomic_read(&listener->pend_accepts_cnt)); | |
3c2d774c GS |
1291 | } |
1292 | ||
1293 | return ret; | |
1294 | } | |
1295 | ||
1296 | ||
1297 | /** | |
1298 | * mini_cm_del_listen | |
1299 | */ | |
1300 | static int mini_cm_del_listen(struct nes_cm_core *cm_core, | |
615eb715 | 1301 | struct nes_cm_listener *listener) |
3c2d774c GS |
1302 | { |
1303 | listener->listener_state = NES_CM_LISTENER_PASSIVE_STATE; | |
1304 | listener->cm_id = NULL; /* going to be destroyed pretty soon */ | |
1305 | return mini_cm_dec_refcnt_listen(cm_core, listener, 1); | |
1306 | } | |
1307 | ||
1308 | ||
1309 | /** | |
1310 | * mini_cm_accelerated | |
1311 | */ | |
1312 | static inline int mini_cm_accelerated(struct nes_cm_core *cm_core, | |
615eb715 | 1313 | struct nes_cm_node *cm_node) |
3c2d774c GS |
1314 | { |
1315 | u32 was_timer_set; | |
615eb715 | 1316 | |
3c2d774c GS |
1317 | cm_node->accelerated = 1; |
1318 | ||
1319 | if (cm_node->accept_pend) { | |
1320 | BUG_ON(!cm_node->listener); | |
1321 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
9d5ab133 | 1322 | cm_node->accept_pend = 0; |
3c2d774c GS |
1323 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); |
1324 | } | |
1325 | ||
1326 | was_timer_set = timer_pending(&cm_core->tcp_timer); | |
1327 | if (!was_timer_set) { | |
1328 | cm_core->tcp_timer.expires = jiffies + NES_SHORT_TIME; | |
1329 | add_timer(&cm_core->tcp_timer); | |
1330 | } | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | ||
1336 | /** | |
7191a0a1 | 1337 | * nes_addr_resolve_neigh |
3c2d774c | 1338 | */ |
7a576dfd | 1339 | static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpindex) |
3c2d774c GS |
1340 | { |
1341 | struct rtable *rt; | |
7191a0a1 | 1342 | struct neighbour *neigh; |
7a576dfd | 1343 | int rc = arpindex; |
2a4c97ea | 1344 | struct net_device *netdev; |
7a576dfd | 1345 | struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter; |
3c2d774c | 1346 | |
78fbfd8a | 1347 | rt = ip_route_output(&init_net, htonl(dst_ip), 0, 0, 0); |
b23dd4fe | 1348 | if (IS_ERR(rt)) { |
9d5ab133 | 1349 | printk(KERN_ERR "%s: ip_route_output_key failed for 0x%08X\n", |
615eb715 | 1350 | __func__, dst_ip); |
7191a0a1 | 1351 | return rc; |
3c2d774c GS |
1352 | } |
1353 | ||
cf55bb24 | 1354 | if (netif_is_bond_slave(nesvnic->netdev)) |
2a4c97ea MS |
1355 | netdev = nesvnic->netdev->master; |
1356 | else | |
1357 | netdev = nesvnic->netdev; | |
1358 | ||
ef3d0c4a | 1359 | neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, netdev); |
e55684fa | 1360 | |
40e2bb58 | 1361 | rcu_read_lock(); |
7191a0a1 BS |
1362 | if (neigh) { |
1363 | if (neigh->nud_state & NUD_VALID) { | |
1364 | nes_debug(NES_DBG_CM, "Neighbor MAC address for 0x%08X" | |
e174961c JB |
1365 | " is %pM, Gateway is 0x%08X \n", dst_ip, |
1366 | neigh->ha, ntohl(rt->rt_gateway)); | |
7a576dfd FL |
1367 | |
1368 | if (arpindex >= 0) { | |
1369 | if (!memcmp(nesadapter->arp_table[arpindex].mac_addr, | |
615eb715 | 1370 | neigh->ha, ETH_ALEN)) { |
7a576dfd | 1371 | /* Mac address same as in nes_arp_table */ |
e55684fa | 1372 | goto out; |
7a576dfd FL |
1373 | } |
1374 | ||
1375 | nes_manage_arp_cache(nesvnic->netdev, | |
615eb715 TN |
1376 | nesadapter->arp_table[arpindex].mac_addr, |
1377 | dst_ip, NES_ARP_DELETE); | |
7a576dfd FL |
1378 | } |
1379 | ||
7191a0a1 BS |
1380 | nes_manage_arp_cache(nesvnic->netdev, neigh->ha, |
1381 | dst_ip, NES_ARP_ADD); | |
1382 | rc = nes_arp_table(nesvnic->nesdev, dst_ip, NULL, | |
1383 | NES_ARP_RESOLVE); | |
40e2bb58 DM |
1384 | } else { |
1385 | neigh_event_send(neigh, NULL); | |
7191a0a1 | 1386 | } |
580da35a | 1387 | } |
e55684fa | 1388 | out: |
40e2bb58 | 1389 | rcu_read_unlock(); |
e55684fa DM |
1390 | |
1391 | if (neigh) | |
1392 | neigh_release(neigh); | |
1393 | ||
3c2d774c | 1394 | ip_rt_put(rt); |
7191a0a1 | 1395 | return rc; |
3c2d774c GS |
1396 | } |
1397 | ||
3c2d774c GS |
1398 | /** |
1399 | * make_cm_node - create a new instance of a cm node | |
1400 | */ | |
1401 | static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core, | |
615eb715 TN |
1402 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info, |
1403 | struct nes_cm_listener *listener) | |
3c2d774c GS |
1404 | { |
1405 | struct nes_cm_node *cm_node; | |
1406 | struct timespec ts; | |
7a576dfd | 1407 | int oldarpindex = 0; |
3c2d774c GS |
1408 | int arpindex = 0; |
1409 | struct nes_device *nesdev; | |
1410 | struct nes_adapter *nesadapter; | |
1411 | ||
1412 | /* create an hte and cm_node for this instance */ | |
1413 | cm_node = kzalloc(sizeof(*cm_node), GFP_ATOMIC); | |
1414 | if (!cm_node) | |
1415 | return NULL; | |
1416 | ||
1417 | /* set our node specific transport info */ | |
1418 | cm_node->loc_addr = cm_info->loc_addr; | |
1419 | cm_node->rem_addr = cm_info->rem_addr; | |
1420 | cm_node->loc_port = cm_info->loc_port; | |
1421 | cm_node->rem_port = cm_info->rem_port; | |
615eb715 TN |
1422 | |
1423 | cm_node->mpa_frame_rev = mpa_version; | |
1424 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; | |
1425 | cm_node->ird_size = IETF_NO_IRD_ORD; | |
1426 | cm_node->ord_size = IETF_NO_IRD_ORD; | |
1427 | ||
63779436 HH |
1428 | nes_debug(NES_DBG_CM, "Make node addresses : loc = %pI4:%x, rem = %pI4:%x\n", |
1429 | &cm_node->loc_addr, cm_node->loc_port, | |
1430 | &cm_node->rem_addr, cm_node->rem_port); | |
3c2d774c GS |
1431 | cm_node->listener = listener; |
1432 | cm_node->netdev = nesvnic->netdev; | |
1433 | cm_node->cm_id = cm_info->cm_id; | |
1434 | memcpy(cm_node->loc_mac, nesvnic->netdev->dev_addr, ETH_ALEN); | |
1435 | ||
6492cdf3 | 1436 | nes_debug(NES_DBG_CM, "listener=%p, cm_id=%p\n", cm_node->listener, |
615eb715 | 1437 | cm_node->cm_id); |
3c2d774c | 1438 | |
3c2d774c | 1439 | spin_lock_init(&cm_node->retrans_list_lock); |
3c2d774c GS |
1440 | |
1441 | cm_node->loopbackpartner = NULL; | |
1442 | atomic_set(&cm_node->ref_count, 1); | |
1443 | /* associate our parent CM core */ | |
1444 | cm_node->cm_core = cm_core; | |
1445 | cm_node->tcp_cntxt.loc_id = NES_CM_DEF_LOCAL_ID; | |
1446 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
1447 | cm_node->tcp_cntxt.rcv_wnd = NES_CM_DEFAULT_RCV_WND_SCALED >> | |
615eb715 | 1448 | NES_CM_DEFAULT_RCV_WND_SCALE; |
3c2d774c GS |
1449 | ts = current_kernel_time(); |
1450 | cm_node->tcp_cntxt.loc_seq_num = htonl(ts.tv_nsec); | |
1451 | cm_node->tcp_cntxt.mss = nesvnic->max_frame_size - sizeof(struct iphdr) - | |
615eb715 | 1452 | sizeof(struct tcphdr) - ETH_HLEN - VLAN_HLEN; |
3c2d774c GS |
1453 | cm_node->tcp_cntxt.rcv_nxt = 0; |
1454 | /* get a unique session ID , add thread_id to an upcounter to handle race */ | |
1455 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c GS |
1456 | cm_node->conn_type = cm_info->conn_type; |
1457 | cm_node->apbvt_set = 0; | |
1458 | cm_node->accept_pend = 0; | |
1459 | ||
1460 | cm_node->nesvnic = nesvnic; | |
1461 | /* get some device handles, for arp lookup */ | |
1462 | nesdev = nesvnic->nesdev; | |
1463 | nesadapter = nesdev->nesadapter; | |
1464 | ||
1465 | cm_node->loopbackpartner = NULL; | |
7a576dfd | 1466 | |
3c2d774c | 1467 | /* get the mac addr for the remote node */ |
ef3d0c4a TN |
1468 | oldarpindex = nes_arp_table(nesdev, cm_node->rem_addr, NULL, NES_ARP_RESOLVE); |
1469 | arpindex = nes_addr_resolve_neigh(nesvnic, cm_info->rem_addr, oldarpindex); | |
3c2d774c | 1470 | if (arpindex < 0) { |
7a576dfd FL |
1471 | kfree(cm_node); |
1472 | return NULL; | |
3c2d774c GS |
1473 | } |
1474 | ||
1475 | /* copy the mac addr to node context */ | |
1476 | memcpy(cm_node->rem_mac, nesadapter->arp_table[arpindex].mac_addr, ETH_ALEN); | |
e174961c JB |
1477 | nes_debug(NES_DBG_CM, "Remote mac addr from arp table: %pM\n", |
1478 | cm_node->rem_mac); | |
3c2d774c GS |
1479 | |
1480 | add_hte_node(cm_core, cm_node); | |
1481 | atomic_inc(&cm_nodes_created); | |
1482 | ||
1483 | return cm_node; | |
1484 | } | |
1485 | ||
1486 | ||
1487 | /** | |
1488 | * add_ref_cm_node - destroy an instance of a cm node | |
1489 | */ | |
1490 | static int add_ref_cm_node(struct nes_cm_node *cm_node) | |
1491 | { | |
1492 | atomic_inc(&cm_node->ref_count); | |
1493 | return 0; | |
1494 | } | |
1495 | ||
1496 | ||
1497 | /** | |
1498 | * rem_ref_cm_node - destroy an instance of a cm node | |
1499 | */ | |
1500 | static int rem_ref_cm_node(struct nes_cm_core *cm_core, | |
615eb715 | 1501 | struct nes_cm_node *cm_node) |
3c2d774c | 1502 | { |
9d5ab133 | 1503 | unsigned long flags; |
3c2d774c GS |
1504 | struct nes_qp *nesqp; |
1505 | ||
1506 | if (!cm_node) | |
1507 | return -EINVAL; | |
1508 | ||
1509 | spin_lock_irqsave(&cm_node->cm_core->ht_lock, flags); | |
1510 | if (atomic_dec_return(&cm_node->ref_count)) { | |
1511 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1512 | return 0; | |
1513 | } | |
1514 | list_del(&cm_node->list); | |
1515 | atomic_dec(&cm_core->ht_node_cnt); | |
1516 | spin_unlock_irqrestore(&cm_node->cm_core->ht_lock, flags); | |
1517 | ||
1518 | /* if the node is destroyed before connection was accelerated */ | |
1519 | if (!cm_node->accelerated && cm_node->accept_pend) { | |
1520 | BUG_ON(!cm_node->listener); | |
1521 | atomic_dec(&cm_node->listener->pend_accepts_cnt); | |
1522 | BUG_ON(atomic_read(&cm_node->listener->pend_accepts_cnt) < 0); | |
1523 | } | |
9d5ab133 FL |
1524 | WARN_ON(cm_node->send_entry); |
1525 | if (cm_node->recv_entry) | |
1526 | handle_recv_entry(cm_node, 0); | |
3c2d774c GS |
1527 | if (cm_node->listener) { |
1528 | mini_cm_dec_refcnt_listen(cm_core, cm_node->listener, 0); | |
1529 | } else { | |
1530 | if (cm_node->apbvt_set && cm_node->nesvnic) { | |
1531 | nes_manage_apbvt(cm_node->nesvnic, cm_node->loc_port, | |
615eb715 TN |
1532 | PCI_FUNC( |
1533 | cm_node->nesvnic->nesdev->pcidev->devfn), | |
1534 | NES_MANAGE_APBVT_DEL); | |
3c2d774c GS |
1535 | } |
1536 | } | |
1537 | ||
3c2d774c GS |
1538 | atomic_dec(&cm_core->node_cnt); |
1539 | atomic_inc(&cm_nodes_destroyed); | |
6492cdf3 FL |
1540 | nesqp = cm_node->nesqp; |
1541 | if (nesqp) { | |
1542 | nesqp->cm_node = NULL; | |
1543 | nes_rem_ref(&nesqp->ibqp); | |
1544 | cm_node->nesqp = NULL; | |
1545 | } | |
3c2d774c | 1546 | |
6492cdf3 | 1547 | kfree(cm_node); |
3c2d774c GS |
1548 | return 0; |
1549 | } | |
1550 | ||
3c2d774c GS |
1551 | /** |
1552 | * process_options | |
1553 | */ | |
6492cdf3 | 1554 | static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc, |
615eb715 | 1555 | u32 optionsize, u32 syn_packet) |
3c2d774c GS |
1556 | { |
1557 | u32 tmp; | |
1558 | u32 offset = 0; | |
1559 | union all_known_options *all_options; | |
1560 | char got_mss_option = 0; | |
1561 | ||
1562 | while (offset < optionsize) { | |
1563 | all_options = (union all_known_options *)(optionsloc + offset); | |
1564 | switch (all_options->as_base.optionnum) { | |
6492cdf3 FL |
1565 | case OPTION_NUMBER_END: |
1566 | offset = optionsize; | |
1567 | break; | |
1568 | case OPTION_NUMBER_NONE: | |
1569 | offset += 1; | |
1570 | continue; | |
1571 | case OPTION_NUMBER_MSS: | |
1572 | nes_debug(NES_DBG_CM, "%s: MSS Length: %d Offset: %d " | |
615eb715 TN |
1573 | "Size: %d\n", __func__, |
1574 | all_options->as_mss.length, offset, optionsize); | |
6492cdf3 FL |
1575 | got_mss_option = 1; |
1576 | if (all_options->as_mss.length != 4) { | |
1577 | return 1; | |
1578 | } else { | |
1579 | tmp = ntohs(all_options->as_mss.mss); | |
1580 | if (tmp > 0 && tmp < | |
615eb715 | 1581 | cm_node->tcp_cntxt.mss) |
6492cdf3 FL |
1582 | cm_node->tcp_cntxt.mss = tmp; |
1583 | } | |
1584 | break; | |
1585 | case OPTION_NUMBER_WINDOW_SCALE: | |
1586 | cm_node->tcp_cntxt.snd_wscale = | |
1587 | all_options->as_windowscale.shiftcount; | |
1588 | break; | |
6492cdf3 FL |
1589 | default: |
1590 | nes_debug(NES_DBG_CM, "TCP Option not understood: %x\n", | |
615eb715 | 1591 | all_options->as_base.optionnum); |
6492cdf3 | 1592 | break; |
3c2d774c GS |
1593 | } |
1594 | offset += all_options->as_base.length; | |
1595 | } | |
1596 | if ((!got_mss_option) && (syn_packet)) | |
1597 | cm_node->tcp_cntxt.mss = NES_CM_DEFAULT_MSS; | |
1598 | return 0; | |
1599 | } | |
1600 | ||
6492cdf3 FL |
1601 | static void drop_packet(struct sk_buff *skb) |
1602 | { | |
1603 | atomic_inc(&cm_accel_dropped_pkts); | |
1604 | dev_kfree_skb_any(skb); | |
1605 | } | |
3c2d774c | 1606 | |
9d5ab133 | 1607 | static void handle_fin_pkt(struct nes_cm_node *cm_node) |
3c2d774c | 1608 | { |
6492cdf3 | 1609 | nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. " |
615eb715 TN |
1610 | "refcnt=%d\n", cm_node, cm_node->state, |
1611 | atomic_read(&cm_node->ref_count)); | |
6492cdf3 FL |
1612 | switch (cm_node->state) { |
1613 | case NES_CM_STATE_SYN_RCVD: | |
1614 | case NES_CM_STATE_SYN_SENT: | |
1615 | case NES_CM_STATE_ESTABLISHED: | |
9d5ab133 | 1616 | case NES_CM_STATE_MPAREJ_RCVD: |
109d67e4 FL |
1617 | cm_node->tcp_cntxt.rcv_nxt++; |
1618 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1619 | cm_node->state = NES_CM_STATE_LAST_ACK; |
9d5ab133 | 1620 | send_fin(cm_node, NULL); |
6492cdf3 | 1621 | break; |
b1190d3e FL |
1622 | case NES_CM_STATE_MPAREQ_SENT: |
1623 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
1624 | cm_node->tcp_cntxt.rcv_nxt++; | |
1625 | cleanup_retrans_entry(cm_node); | |
1626 | cm_node->state = NES_CM_STATE_CLOSED; | |
1627 | add_ref_cm_node(cm_node); | |
1628 | send_reset(cm_node, NULL); | |
1629 | break; | |
6492cdf3 | 1630 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1631 | cm_node->tcp_cntxt.rcv_nxt++; |
1632 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1633 | cm_node->state = NES_CM_STATE_CLOSING; |
9d5ab133 | 1634 | send_ack(cm_node, NULL); |
25985edc | 1635 | /* Wait for ACK as this is simultaneous close.. |
9d5ab133 FL |
1636 | * After we receive ACK, do not send anything.. |
1637 | * Just rm the node.. Done.. */ | |
6492cdf3 FL |
1638 | break; |
1639 | case NES_CM_STATE_FIN_WAIT2: | |
109d67e4 FL |
1640 | cm_node->tcp_cntxt.rcv_nxt++; |
1641 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1642 | cm_node->state = NES_CM_STATE_TIME_WAIT; |
9d5ab133 FL |
1643 | send_ack(cm_node, NULL); |
1644 | schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0); | |
1645 | break; | |
1646 | case NES_CM_STATE_TIME_WAIT: | |
109d67e4 FL |
1647 | cm_node->tcp_cntxt.rcv_nxt++; |
1648 | cleanup_retrans_entry(cm_node); | |
6492cdf3 | 1649 | cm_node->state = NES_CM_STATE_CLOSED; |
9d5ab133 | 1650 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
6492cdf3 FL |
1651 | break; |
1652 | case NES_CM_STATE_TSA: | |
1653 | default: | |
1654 | nes_debug(NES_DBG_CM, "Error Rcvd FIN for node-%p state = %d\n", | |
1655 | cm_node, cm_node->state); | |
6492cdf3 | 1656 | break; |
3c2d774c | 1657 | } |
6492cdf3 | 1658 | } |
3c2d774c | 1659 | |
3c2d774c | 1660 | |
6492cdf3 FL |
1661 | static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
1662 | struct tcphdr *tcph) | |
1663 | { | |
3c2d774c | 1664 | |
6492cdf3 FL |
1665 | int reset = 0; /* whether to send reset in case of err.. */ |
1666 | atomic_inc(&cm_resets_recvd); | |
1667 | nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u." | |
1668 | " refcnt=%d\n", cm_node, cm_node->state, | |
1669 | atomic_read(&cm_node->ref_count)); | |
1670 | cleanup_retrans_entry(cm_node); | |
1671 | switch (cm_node->state) { | |
1672 | case NES_CM_STATE_SYN_SENT: | |
1673 | case NES_CM_STATE_MPAREQ_SENT: | |
1674 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
1675 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, | |
1676 | cm_node->listener, cm_node->state); | |
615eb715 TN |
1677 | switch (cm_node->mpa_frame_rev) { |
1678 | case IETF_MPA_V2: | |
1679 | cm_node->mpa_frame_rev = IETF_MPA_V1; | |
1680 | /* send a syn and goto syn sent state */ | |
1681 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
1682 | if (send_syn(cm_node, 0, NULL)) { | |
1683 | active_open_err(cm_node, skb, reset); | |
1684 | } | |
1685 | break; | |
1686 | case IETF_MPA_V1: | |
1687 | default: | |
1688 | active_open_err(cm_node, skb, reset); | |
1689 | break; | |
1690 | } | |
6492cdf3 | 1691 | break; |
183ecfa3 | 1692 | case NES_CM_STATE_MPAREQ_RCVD: |
4d8d6389 | 1693 | atomic_inc(&cm_node->passive_state); |
183ecfa3 FL |
1694 | dev_kfree_skb_any(skb); |
1695 | break; | |
6492cdf3 FL |
1696 | case NES_CM_STATE_ESTABLISHED: |
1697 | case NES_CM_STATE_SYN_RCVD: | |
1698 | case NES_CM_STATE_LISTENING: | |
1699 | nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__); | |
1700 | passive_open_err(cm_node, skb, reset); | |
1701 | break; | |
1702 | case NES_CM_STATE_TSA: | |
183ecfa3 FL |
1703 | active_open_err(cm_node, skb, reset); |
1704 | break; | |
1705 | case NES_CM_STATE_CLOSED: | |
183ecfa3 FL |
1706 | drop_packet(skb); |
1707 | break; | |
dae58728 | 1708 | case NES_CM_STATE_FIN_WAIT2: |
68237a0f | 1709 | case NES_CM_STATE_FIN_WAIT1: |
109d67e4 FL |
1710 | case NES_CM_STATE_LAST_ACK: |
1711 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 | 1712 | case NES_CM_STATE_TIME_WAIT: |
9d5ab133 FL |
1713 | cm_node->state = NES_CM_STATE_CLOSED; |
1714 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
1715 | drop_packet(skb); | |
1716 | break; | |
6492cdf3 | 1717 | default: |
183ecfa3 | 1718 | drop_packet(skb); |
6492cdf3 FL |
1719 | break; |
1720 | } | |
1721 | } | |
3c2d774c | 1722 | |
9d5ab133 FL |
1723 | |
1724 | static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
6492cdf3 | 1725 | { |
615eb715 | 1726 | int ret = 0; |
6492cdf3 FL |
1727 | int datasize = skb->len; |
1728 | u8 *dataloc = skb->data; | |
9d5ab133 FL |
1729 | |
1730 | enum nes_cm_event_type type = NES_CM_EVENT_UNKNOWN; | |
615eb715 TN |
1731 | u32 res_type; |
1732 | ||
9d5ab133 FL |
1733 | ret = parse_mpa(cm_node, dataloc, &res_type, datasize); |
1734 | if (ret) { | |
6492cdf3 | 1735 | nes_debug(NES_DBG_CM, "didn't like MPA Request\n"); |
9d5ab133 | 1736 | if (cm_node->state == NES_CM_STATE_MPAREQ_SENT) { |
6492cdf3 | 1737 | nes_debug(NES_DBG_CM, "%s[%u] create abort for " |
615eb715 TN |
1738 | "cm_node=%p listener=%p state=%d\n", __func__, |
1739 | __LINE__, cm_node, cm_node->listener, | |
1740 | cm_node->state); | |
6492cdf3 FL |
1741 | active_open_err(cm_node, skb, 1); |
1742 | } else { | |
1743 | passive_open_err(cm_node, skb, 1); | |
3c2d774c | 1744 | } |
9d5ab133 FL |
1745 | return; |
1746 | } | |
1747 | ||
1748 | switch (cm_node->state) { | |
1749 | case NES_CM_STATE_ESTABLISHED: | |
615eb715 | 1750 | if (res_type == NES_MPA_REQUEST_REJECT) |
9d5ab133 | 1751 | /*BIG problem as we are receiving the MPA.. So should |
615eb715 TN |
1752 | * not be REJECT.. This is Passive Open.. We can |
1753 | * only receive it Reject for Active Open...*/ | |
9d5ab133 | 1754 | WARN_ON(1); |
9d5ab133 FL |
1755 | cm_node->state = NES_CM_STATE_MPAREQ_RCVD; |
1756 | type = NES_CM_EVENT_MPA_REQ; | |
1757 | atomic_set(&cm_node->passive_state, | |
615eb715 | 1758 | NES_PASSIVE_STATE_INDICATED); |
9d5ab133 FL |
1759 | break; |
1760 | case NES_CM_STATE_MPAREQ_SENT: | |
109d67e4 | 1761 | cleanup_retrans_entry(cm_node); |
9d5ab133 FL |
1762 | if (res_type == NES_MPA_REQUEST_REJECT) { |
1763 | type = NES_CM_EVENT_MPA_REJECT; | |
1764 | cm_node->state = NES_CM_STATE_MPAREJ_RCVD; | |
1765 | } else { | |
1766 | type = NES_CM_EVENT_CONNECTED; | |
6492cdf3 | 1767 | cm_node->state = NES_CM_STATE_TSA; |
9d5ab133 | 1768 | } |
6492cdf3 | 1769 | |
9d5ab133 FL |
1770 | break; |
1771 | default: | |
1772 | WARN_ON(1); | |
1773 | break; | |
6492cdf3 | 1774 | } |
9d5ab133 FL |
1775 | dev_kfree_skb_any(skb); |
1776 | create_event(cm_node, type); | |
6492cdf3 FL |
1777 | } |
1778 | ||
1779 | static void indicate_pkt_err(struct nes_cm_node *cm_node, struct sk_buff *skb) | |
1780 | { | |
1781 | switch (cm_node->state) { | |
1782 | case NES_CM_STATE_SYN_SENT: | |
1783 | case NES_CM_STATE_MPAREQ_SENT: | |
1784 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1785 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1786 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1787 | active_open_err(cm_node, skb, 1); |
1788 | break; | |
1789 | case NES_CM_STATE_ESTABLISHED: | |
1790 | case NES_CM_STATE_SYN_RCVD: | |
1791 | passive_open_err(cm_node, skb, 1); | |
1792 | break; | |
1793 | case NES_CM_STATE_TSA: | |
1794 | default: | |
1795 | drop_packet(skb); | |
3c2d774c | 1796 | } |
6492cdf3 FL |
1797 | } |
1798 | ||
1799 | static int check_syn(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1800 | struct sk_buff *skb) |
6492cdf3 FL |
1801 | { |
1802 | int err; | |
1803 | ||
615eb715 | 1804 | err = ((ntohl(tcph->ack_seq) == cm_node->tcp_cntxt.loc_seq_num)) ? 0 : 1; |
6492cdf3 FL |
1805 | if (err) |
1806 | active_open_err(cm_node, skb, 1); | |
1807 | ||
1808 | return err; | |
1809 | } | |
1810 | ||
1811 | static int check_seq(struct nes_cm_node *cm_node, struct tcphdr *tcph, | |
615eb715 | 1812 | struct sk_buff *skb) |
6492cdf3 FL |
1813 | { |
1814 | int err = 0; | |
1815 | u32 seq; | |
1816 | u32 ack_seq; | |
1817 | u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; | |
1818 | u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; | |
1819 | u32 rcv_wnd; | |
615eb715 | 1820 | |
6492cdf3 FL |
1821 | seq = ntohl(tcph->seq); |
1822 | ack_seq = ntohl(tcph->ack_seq); | |
1823 | rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; | |
1824 | if (ack_seq != loc_seq_num) | |
1825 | err = 1; | |
615eb715 | 1826 | else if (!between(seq, rcv_nxt, (rcv_nxt + rcv_wnd))) |
6492cdf3 FL |
1827 | err = 1; |
1828 | if (err) { | |
1829 | nes_debug(NES_DBG_CM, "%s[%u] create abort for cm_node=%p " | |
615eb715 TN |
1830 | "listener=%p state=%d\n", __func__, __LINE__, cm_node, |
1831 | cm_node->listener, cm_node->state); | |
6492cdf3 FL |
1832 | indicate_pkt_err(cm_node, skb); |
1833 | nes_debug(NES_DBG_CM, "seq ERROR cm_node =%p seq=0x%08X " | |
615eb715 TN |
1834 | "rcv_nxt=0x%08X rcv_wnd=0x%x\n", cm_node, seq, rcv_nxt, |
1835 | rcv_wnd); | |
6492cdf3 FL |
1836 | } |
1837 | return err; | |
1838 | } | |
1839 | ||
1840 | /* | |
1841 | * handle_syn_pkt() is for Passive node. The syn packet is received when a node | |
1842 | * is created with a listener or it may comein as rexmitted packet which in | |
1843 | * that case will be just dropped. | |
1844 | */ | |
6492cdf3 | 1845 | static void handle_syn_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 1846 | struct tcphdr *tcph) |
6492cdf3 FL |
1847 | { |
1848 | int ret; | |
1849 | u32 inc_sequence; | |
1850 | int optionsize; | |
3c2d774c GS |
1851 | |
1852 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 1853 | skb_trim(skb, 0); |
6492cdf3 | 1854 | inc_sequence = ntohl(tcph->seq); |
3c2d774c | 1855 | |
6492cdf3 FL |
1856 | switch (cm_node->state) { |
1857 | case NES_CM_STATE_SYN_SENT: | |
1858 | case NES_CM_STATE_MPAREQ_SENT: | |
1859 | /* Rcvd syn on active open connection*/ | |
1860 | active_open_err(cm_node, skb, 1); | |
1861 | break; | |
1862 | case NES_CM_STATE_LISTENING: | |
1863 | /* Passive OPEN */ | |
6492cdf3 | 1864 | if (atomic_read(&cm_node->listener->pend_accepts_cnt) > |
615eb715 | 1865 | cm_node->listener->backlog) { |
6492cdf3 | 1866 | nes_debug(NES_DBG_CM, "drop syn due to backlog " |
615eb715 | 1867 | "pressure \n"); |
6492cdf3 FL |
1868 | cm_backlog_drops++; |
1869 | passive_open_err(cm_node, skb, 0); | |
1870 | break; | |
1871 | } | |
1872 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, | |
615eb715 | 1873 | 1); |
6492cdf3 FL |
1874 | if (ret) { |
1875 | passive_open_err(cm_node, skb, 0); | |
1876 | /* drop pkt */ | |
1877 | break; | |
1878 | } | |
1879 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
1880 | BUG_ON(cm_node->send_entry); | |
9d5ab133 FL |
1881 | cm_node->accept_pend = 1; |
1882 | atomic_inc(&cm_node->listener->pend_accepts_cnt); | |
1883 | ||
6492cdf3 FL |
1884 | cm_node->state = NES_CM_STATE_SYN_RCVD; |
1885 | send_syn(cm_node, 1, skb); | |
1886 | break; | |
abb77256 FL |
1887 | case NES_CM_STATE_CLOSED: |
1888 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 1889 | add_ref_cm_node(cm_node); |
abb77256 FL |
1890 | send_reset(cm_node, skb); |
1891 | break; | |
6492cdf3 FL |
1892 | case NES_CM_STATE_TSA: |
1893 | case NES_CM_STATE_ESTABLISHED: | |
1894 | case NES_CM_STATE_FIN_WAIT1: | |
1895 | case NES_CM_STATE_FIN_WAIT2: | |
1896 | case NES_CM_STATE_MPAREQ_RCVD: | |
1897 | case NES_CM_STATE_LAST_ACK: | |
1898 | case NES_CM_STATE_CLOSING: | |
1899 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
1900 | default: |
1901 | drop_packet(skb); | |
1902 | break; | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 1907 | struct tcphdr *tcph) |
6492cdf3 | 1908 | { |
6492cdf3 FL |
1909 | int ret; |
1910 | u32 inc_sequence; | |
1911 | int optionsize; | |
1912 | ||
1913 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); | |
abb77256 | 1914 | skb_trim(skb, 0); |
6492cdf3 FL |
1915 | inc_sequence = ntohl(tcph->seq); |
1916 | switch (cm_node->state) { | |
1917 | case NES_CM_STATE_SYN_SENT: | |
9d5ab133 | 1918 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
1919 | /* active open */ |
1920 | if (check_syn(cm_node, tcph, skb)) | |
1921 | return; | |
1922 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
1923 | /* setup options */ | |
1924 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 0); | |
1925 | if (ret) { | |
1926 | nes_debug(NES_DBG_CM, "cm_node=%p tcp_options failed\n", | |
615eb715 | 1927 | cm_node); |
6492cdf3 FL |
1928 | break; |
1929 | } | |
1930 | cleanup_retrans_entry(cm_node); | |
1931 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; | |
1932 | send_mpa_request(cm_node, skb); | |
1933 | cm_node->state = NES_CM_STATE_MPAREQ_SENT; | |
1934 | break; | |
1935 | case NES_CM_STATE_MPAREQ_RCVD: | |
1936 | /* passive open, so should not be here */ | |
1937 | passive_open_err(cm_node, skb, 1); | |
1938 | break; | |
abb77256 | 1939 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
1940 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
1941 | cleanup_retrans_entry(cm_node); | |
1942 | cm_node->state = NES_CM_STATE_CLOSED; | |
1943 | send_reset(cm_node, skb); | |
1944 | break; | |
abb77256 FL |
1945 | case NES_CM_STATE_CLOSED: |
1946 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); | |
1947 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 1948 | add_ref_cm_node(cm_node); |
abb77256 FL |
1949 | send_reset(cm_node, skb); |
1950 | break; | |
6492cdf3 FL |
1951 | case NES_CM_STATE_ESTABLISHED: |
1952 | case NES_CM_STATE_FIN_WAIT1: | |
1953 | case NES_CM_STATE_FIN_WAIT2: | |
1954 | case NES_CM_STATE_LAST_ACK: | |
1955 | case NES_CM_STATE_TSA: | |
1956 | case NES_CM_STATE_CLOSING: | |
1957 | case NES_CM_STATE_UNKNOWN: | |
6492cdf3 FL |
1958 | case NES_CM_STATE_MPAREQ_SENT: |
1959 | default: | |
1960 | drop_packet(skb); | |
1961 | break; | |
1962 | } | |
1963 | } | |
3c2d774c | 1964 | |
109d67e4 | 1965 | static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 1966 | struct tcphdr *tcph) |
6492cdf3 FL |
1967 | { |
1968 | int datasize = 0; | |
1969 | u32 inc_sequence; | |
109d67e4 | 1970 | int ret = 0; |
abb77256 | 1971 | int optionsize; |
615eb715 | 1972 | |
abb77256 | 1973 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
abb77256 | 1974 | |
6492cdf3 | 1975 | if (check_seq(cm_node, tcph, skb)) |
109d67e4 | 1976 | return -EINVAL; |
6492cdf3 FL |
1977 | |
1978 | skb_pull(skb, tcph->doff << 2); | |
3c2d774c | 1979 | inc_sequence = ntohl(tcph->seq); |
6492cdf3 | 1980 | datasize = skb->len; |
6492cdf3 FL |
1981 | switch (cm_node->state) { |
1982 | case NES_CM_STATE_SYN_RCVD: | |
1983 | /* Passive OPEN */ | |
109d67e4 | 1984 | cleanup_retrans_entry(cm_node); |
abb77256 FL |
1985 | ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1); |
1986 | if (ret) | |
1987 | break; | |
6492cdf3 FL |
1988 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
1989 | cm_node->state = NES_CM_STATE_ESTABLISHED; | |
1990 | if (datasize) { | |
1991 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 1992 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 1993 | } else { /* rcvd ACK only */ |
6492cdf3 | 1994 | dev_kfree_skb_any(skb); |
615eb715 | 1995 | } |
6492cdf3 FL |
1996 | break; |
1997 | case NES_CM_STATE_ESTABLISHED: | |
1998 | /* Passive OPEN */ | |
9d5ab133 | 1999 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2000 | if (datasize) { |
2001 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2002 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2003 | } else { |
6492cdf3 | 2004 | drop_packet(skb); |
615eb715 | 2005 | } |
6492cdf3 FL |
2006 | break; |
2007 | case NES_CM_STATE_MPAREQ_SENT: | |
2008 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); | |
2009 | if (datasize) { | |
2010 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; | |
9d5ab133 | 2011 | handle_rcv_mpa(cm_node, skb); |
615eb715 | 2012 | } else { /* Could be just an ack pkt.. */ |
6492cdf3 | 2013 | dev_kfree_skb_any(skb); |
615eb715 | 2014 | } |
6492cdf3 | 2015 | break; |
abb77256 | 2016 | case NES_CM_STATE_LISTENING: |
886f98a3 FL |
2017 | cleanup_retrans_entry(cm_node); |
2018 | cm_node->state = NES_CM_STATE_CLOSED; | |
2019 | send_reset(cm_node, skb); | |
2020 | break; | |
abb77256 FL |
2021 | case NES_CM_STATE_CLOSED: |
2022 | cleanup_retrans_entry(cm_node); | |
886f98a3 | 2023 | add_ref_cm_node(cm_node); |
abb77256 FL |
2024 | send_reset(cm_node, skb); |
2025 | break; | |
9d5ab133 | 2026 | case NES_CM_STATE_LAST_ACK: |
109d67e4 | 2027 | case NES_CM_STATE_CLOSING: |
9d5ab133 FL |
2028 | cleanup_retrans_entry(cm_node); |
2029 | cm_node->state = NES_CM_STATE_CLOSED; | |
2030 | cm_node->cm_id->rem_ref(cm_node->cm_id); | |
9d5ab133 FL |
2031 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2032 | drop_packet(skb); | |
2033 | break; | |
6492cdf3 | 2034 | case NES_CM_STATE_FIN_WAIT1: |
9d5ab133 FL |
2035 | cleanup_retrans_entry(cm_node); |
2036 | drop_packet(skb); | |
2037 | cm_node->state = NES_CM_STATE_FIN_WAIT2; | |
2038 | break; | |
6492cdf3 FL |
2039 | case NES_CM_STATE_SYN_SENT: |
2040 | case NES_CM_STATE_FIN_WAIT2: | |
2041 | case NES_CM_STATE_TSA: | |
6492cdf3 | 2042 | case NES_CM_STATE_MPAREQ_RCVD: |
6492cdf3 FL |
2043 | case NES_CM_STATE_UNKNOWN: |
2044 | default: | |
109d67e4 | 2045 | cleanup_retrans_entry(cm_node); |
6492cdf3 FL |
2046 | drop_packet(skb); |
2047 | break; | |
3c2d774c | 2048 | } |
109d67e4 | 2049 | return ret; |
6492cdf3 | 2050 | } |
3c2d774c | 2051 | |
3c2d774c GS |
2052 | |
2053 | ||
6492cdf3 | 2054 | static int handle_tcp_options(struct nes_cm_node *cm_node, struct tcphdr *tcph, |
615eb715 | 2055 | struct sk_buff *skb, int optionsize, int passive) |
6492cdf3 FL |
2056 | { |
2057 | u8 *optionsloc = (u8 *)&tcph[1]; | |
615eb715 | 2058 | |
3c2d774c | 2059 | if (optionsize) { |
6492cdf3 | 2060 | if (process_options(cm_node, optionsloc, optionsize, |
615eb715 | 2061 | (u32)tcph->syn)) { |
6492cdf3 | 2062 | nes_debug(NES_DBG_CM, "%s: Node %p, Sending RESET\n", |
615eb715 | 2063 | __func__, cm_node); |
6492cdf3 | 2064 | if (passive) |
abb77256 | 2065 | passive_open_err(cm_node, skb, 1); |
6492cdf3 | 2066 | else |
abb77256 | 2067 | active_open_err(cm_node, skb, 1); |
6492cdf3 | 2068 | return 1; |
3c2d774c | 2069 | } |
6492cdf3 | 2070 | } |
3c2d774c GS |
2071 | |
2072 | cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) << | |
615eb715 | 2073 | cm_node->tcp_cntxt.snd_wscale; |
3c2d774c | 2074 | |
6492cdf3 | 2075 | if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) |
3c2d774c | 2076 | cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
6492cdf3 FL |
2077 | return 0; |
2078 | } | |
3c2d774c | 2079 | |
6492cdf3 FL |
2080 | /* |
2081 | * active_open_err() will send reset() if flag set.. | |
2082 | * It will also send ABORT event. | |
2083 | */ | |
6492cdf3 | 2084 | static void active_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2085 | int reset) |
6492cdf3 FL |
2086 | { |
2087 | cleanup_retrans_entry(cm_node); | |
2088 | if (reset) { | |
2089 | nes_debug(NES_DBG_CM, "ERROR active err called for cm_node=%p, " | |
615eb715 | 2090 | "state=%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2091 | add_ref_cm_node(cm_node); |
2092 | send_reset(cm_node, skb); | |
615eb715 | 2093 | } else { |
6492cdf3 | 2094 | dev_kfree_skb_any(skb); |
615eb715 | 2095 | } |
3c2d774c | 2096 | |
6492cdf3 FL |
2097 | cm_node->state = NES_CM_STATE_CLOSED; |
2098 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2099 | } | |
3c2d774c | 2100 | |
6492cdf3 FL |
2101 | /* |
2102 | * passive_open_err() will either do a reset() or will free up the skb and | |
2103 | * remove the cm_node. | |
2104 | */ | |
6492cdf3 | 2105 | static void passive_open_err(struct nes_cm_node *cm_node, struct sk_buff *skb, |
615eb715 | 2106 | int reset) |
6492cdf3 FL |
2107 | { |
2108 | cleanup_retrans_entry(cm_node); | |
2109 | cm_node->state = NES_CM_STATE_CLOSED; | |
2110 | if (reset) { | |
2111 | nes_debug(NES_DBG_CM, "passive_open_err sending RST for " | |
615eb715 | 2112 | "cm_node=%p state =%d\n", cm_node, cm_node->state); |
6492cdf3 FL |
2113 | send_reset(cm_node, skb); |
2114 | } else { | |
2115 | dev_kfree_skb_any(skb); | |
2116 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2117 | } |
6492cdf3 | 2118 | } |
3c2d774c | 2119 | |
6492cdf3 FL |
2120 | /* |
2121 | * free_retrans_entry() routines assumes that the retrans_list_lock has | |
2122 | * been acquired before calling. | |
2123 | */ | |
2124 | static void free_retrans_entry(struct nes_cm_node *cm_node) | |
2125 | { | |
2126 | struct nes_timer_entry *send_entry; | |
615eb715 | 2127 | |
6492cdf3 FL |
2128 | send_entry = cm_node->send_entry; |
2129 | if (send_entry) { | |
2130 | cm_node->send_entry = NULL; | |
2131 | dev_kfree_skb_any(send_entry->skb); | |
2132 | kfree(send_entry); | |
2133 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3c2d774c | 2134 | } |
6492cdf3 | 2135 | } |
3c2d774c | 2136 | |
6492cdf3 FL |
2137 | static void cleanup_retrans_entry(struct nes_cm_node *cm_node) |
2138 | { | |
2139 | unsigned long flags; | |
3c2d774c | 2140 | |
6492cdf3 FL |
2141 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
2142 | free_retrans_entry(cm_node); | |
2143 | spin_unlock_irqrestore(&cm_node->retrans_list_lock, flags); | |
3c2d774c GS |
2144 | } |
2145 | ||
6492cdf3 FL |
2146 | /** |
2147 | * process_packet | |
2148 | * Returns skb if to be freed, else it will return NULL if already used.. | |
2149 | */ | |
2150 | static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb, | |
615eb715 | 2151 | struct nes_cm_core *cm_core) |
6492cdf3 | 2152 | { |
615eb715 | 2153 | enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN; |
6492cdf3 | 2154 | struct tcphdr *tcph = tcp_hdr(skb); |
615eb715 | 2155 | u32 fin_set = 0; |
109d67e4 | 2156 | int ret = 0; |
615eb715 | 2157 | |
6492cdf3 FL |
2158 | skb_pull(skb, ip_hdr(skb)->ihl << 2); |
2159 | ||
2160 | nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d " | |
615eb715 TN |
2161 | "ack=%d rst=%d fin=%d\n", cm_node, cm_node->state, tcph->syn, |
2162 | tcph->ack, tcph->rst, tcph->fin); | |
6492cdf3 | 2163 | |
615eb715 | 2164 | if (tcph->rst) { |
6492cdf3 | 2165 | pkt_type = NES_PKT_TYPE_RST; |
615eb715 | 2166 | } else if (tcph->syn) { |
6492cdf3 FL |
2167 | pkt_type = NES_PKT_TYPE_SYN; |
2168 | if (tcph->ack) | |
2169 | pkt_type = NES_PKT_TYPE_SYNACK; | |
615eb715 | 2170 | } else if (tcph->ack) { |
6492cdf3 | 2171 | pkt_type = NES_PKT_TYPE_ACK; |
615eb715 | 2172 | } |
9d5ab133 FL |
2173 | if (tcph->fin) |
2174 | fin_set = 1; | |
6492cdf3 FL |
2175 | |
2176 | switch (pkt_type) { | |
2177 | case NES_PKT_TYPE_SYN: | |
2178 | handle_syn_pkt(cm_node, skb, tcph); | |
2179 | break; | |
2180 | case NES_PKT_TYPE_SYNACK: | |
2181 | handle_synack_pkt(cm_node, skb, tcph); | |
2182 | break; | |
2183 | case NES_PKT_TYPE_ACK: | |
109d67e4 FL |
2184 | ret = handle_ack_pkt(cm_node, skb, tcph); |
2185 | if (fin_set && !ret) | |
9d5ab133 | 2186 | handle_fin_pkt(cm_node); |
6492cdf3 FL |
2187 | break; |
2188 | case NES_PKT_TYPE_RST: | |
2189 | handle_rst_pkt(cm_node, skb, tcph); | |
2190 | break; | |
6492cdf3 | 2191 | default: |
109d67e4 | 2192 | if ((fin_set) && (!check_seq(cm_node, tcph, skb))) |
9d5ab133 | 2193 | handle_fin_pkt(cm_node); |
109d67e4 | 2194 | drop_packet(skb); |
6492cdf3 FL |
2195 | break; |
2196 | } | |
2197 | } | |
3c2d774c GS |
2198 | |
2199 | /** | |
2200 | * mini_cm_listen - create a listen node with params | |
2201 | */ | |
2202 | static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *cm_core, | |
615eb715 | 2203 | struct nes_vnic *nesvnic, struct nes_cm_info *cm_info) |
3c2d774c GS |
2204 | { |
2205 | struct nes_cm_listener *listener; | |
2206 | unsigned long flags; | |
2207 | ||
2208 | nes_debug(NES_DBG_CM, "Search for 0x%08x : 0x%04x\n", | |
615eb715 | 2209 | cm_info->loc_addr, cm_info->loc_port); |
3c2d774c GS |
2210 | |
2211 | /* cannot have multiple matching listeners */ | |
2212 | listener = find_listener(cm_core, htonl(cm_info->loc_addr), | |
615eb715 | 2213 | htons(cm_info->loc_port), NES_CM_LISTENER_EITHER_STATE); |
3c2d774c GS |
2214 | if (listener && listener->listener_state == NES_CM_LISTENER_ACTIVE_STATE) { |
2215 | /* find automatically incs ref count ??? */ | |
2216 | atomic_dec(&listener->ref_count); | |
2217 | nes_debug(NES_DBG_CM, "Not creating listener since it already exists\n"); | |
2218 | return NULL; | |
2219 | } | |
2220 | ||
2221 | if (!listener) { | |
2222 | /* create a CM listen node (1/2 node to compare incoming traffic to) */ | |
2223 | listener = kzalloc(sizeof(*listener), GFP_ATOMIC); | |
2224 | if (!listener) { | |
2225 | nes_debug(NES_DBG_CM, "Not creating listener memory allocation failed\n"); | |
2226 | return NULL; | |
2227 | } | |
2228 | ||
3c2d774c GS |
2229 | listener->loc_addr = htonl(cm_info->loc_addr); |
2230 | listener->loc_port = htons(cm_info->loc_port); | |
2231 | listener->reused_node = 0; | |
2232 | ||
2233 | atomic_set(&listener->ref_count, 1); | |
2234 | } | |
2235 | /* pasive case */ | |
2236 | /* find already inc'ed the ref count */ | |
2237 | else { | |
2238 | listener->reused_node = 1; | |
2239 | } | |
2240 | ||
2241 | listener->cm_id = cm_info->cm_id; | |
2242 | atomic_set(&listener->pend_accepts_cnt, 0); | |
2243 | listener->cm_core = cm_core; | |
2244 | listener->nesvnic = nesvnic; | |
2245 | atomic_inc(&cm_core->node_cnt); | |
3c2d774c | 2246 | |
3c2d774c GS |
2247 | listener->conn_type = cm_info->conn_type; |
2248 | listener->backlog = cm_info->backlog; | |
2249 | listener->listener_state = NES_CM_LISTENER_ACTIVE_STATE; | |
2250 | ||
2251 | if (!listener->reused_node) { | |
2252 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); | |
2253 | list_add(&listener->list, &cm_core->listen_list.list); | |
2254 | spin_unlock_irqrestore(&cm_core->listen_list_lock, flags); | |
2255 | atomic_inc(&cm_core->listen_node_cnt); | |
2256 | } | |
2257 | ||
2258 | nes_debug(NES_DBG_CM, "Api - listen(): addr=0x%08X, port=0x%04x," | |
615eb715 TN |
2259 | " listener = %p, backlog = %d, cm_id = %p.\n", |
2260 | cm_info->loc_addr, cm_info->loc_port, | |
2261 | listener, listener->backlog, listener->cm_id); | |
3c2d774c GS |
2262 | |
2263 | return listener; | |
2264 | } | |
2265 | ||
2266 | ||
2267 | /** | |
2268 | * mini_cm_connect - make a connection node with params | |
2269 | */ | |
54c86a8c | 2270 | static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core, |
615eb715 TN |
2271 | struct nes_vnic *nesvnic, u16 private_data_len, |
2272 | void *private_data, struct nes_cm_info *cm_info) | |
3c2d774c GS |
2273 | { |
2274 | int ret = 0; | |
2275 | struct nes_cm_node *cm_node; | |
2276 | struct nes_cm_listener *loopbackremotelistener; | |
2277 | struct nes_cm_node *loopbackremotenode; | |
2278 | struct nes_cm_info loopback_cm_info; | |
615eb715 | 2279 | u8 *start_buff; |
3c2d774c GS |
2280 | |
2281 | /* create a CM connection node */ | |
2282 | cm_node = make_cm_node(cm_core, nesvnic, cm_info, NULL); | |
2283 | if (!cm_node) | |
2284 | return NULL; | |
2285 | ||
7495ab68 | 2286 | /* set our node side to client (active) side */ |
3c2d774c GS |
2287 | cm_node->tcp_cntxt.client = 1; |
2288 | cm_node->tcp_cntxt.rcv_wscale = NES_CM_DEFAULT_RCV_WND_SCALE; | |
2289 | ||
2290 | if (cm_info->loc_addr == cm_info->rem_addr) { | |
6492cdf3 | 2291 | loopbackremotelistener = find_listener(cm_core, |
615eb715 TN |
2292 | ntohl(nesvnic->local_ipaddr), cm_node->rem_port, |
2293 | NES_CM_LISTENER_ACTIVE_STATE); | |
3c2d774c GS |
2294 | if (loopbackremotelistener == NULL) { |
2295 | create_event(cm_node, NES_CM_EVENT_ABORTED); | |
2296 | } else { | |
3c2d774c GS |
2297 | loopback_cm_info = *cm_info; |
2298 | loopback_cm_info.loc_port = cm_info->rem_port; | |
2299 | loopback_cm_info.rem_port = cm_info->loc_port; | |
2300 | loopback_cm_info.cm_id = loopbackremotelistener->cm_id; | |
6492cdf3 | 2301 | loopbackremotenode = make_cm_node(cm_core, nesvnic, |
615eb715 | 2302 | &loopback_cm_info, loopbackremotelistener); |
79fc3d74 FL |
2303 | if (!loopbackremotenode) { |
2304 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
2305 | return NULL; | |
2306 | } | |
2307 | atomic_inc(&cm_loopbacks); | |
3c2d774c | 2308 | loopbackremotenode->loopbackpartner = cm_node; |
6492cdf3 FL |
2309 | loopbackremotenode->tcp_cntxt.rcv_wscale = |
2310 | NES_CM_DEFAULT_RCV_WND_SCALE; | |
3c2d774c | 2311 | cm_node->loopbackpartner = loopbackremotenode; |
6492cdf3 | 2312 | memcpy(loopbackremotenode->mpa_frame_buf, private_data, |
615eb715 | 2313 | private_data_len); |
6492cdf3 | 2314 | loopbackremotenode->mpa_frame_size = private_data_len; |
3c2d774c | 2315 | |
6492cdf3 FL |
2316 | /* we are done handling this state. */ |
2317 | /* set node to a TSA state */ | |
3c2d774c | 2318 | cm_node->state = NES_CM_STATE_TSA; |
6492cdf3 FL |
2319 | cm_node->tcp_cntxt.rcv_nxt = |
2320 | loopbackremotenode->tcp_cntxt.loc_seq_num; | |
2321 | loopbackremotenode->tcp_cntxt.rcv_nxt = | |
2322 | cm_node->tcp_cntxt.loc_seq_num; | |
2323 | cm_node->tcp_cntxt.max_snd_wnd = | |
2324 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2325 | loopbackremotenode->tcp_cntxt.max_snd_wnd = | |
2326 | cm_node->tcp_cntxt.rcv_wnd; | |
2327 | cm_node->tcp_cntxt.snd_wnd = | |
2328 | loopbackremotenode->tcp_cntxt.rcv_wnd; | |
2329 | loopbackremotenode->tcp_cntxt.snd_wnd = | |
2330 | cm_node->tcp_cntxt.rcv_wnd; | |
2331 | cm_node->tcp_cntxt.snd_wscale = | |
2332 | loopbackremotenode->tcp_cntxt.rcv_wscale; | |
2333 | loopbackremotenode->tcp_cntxt.snd_wscale = | |
2334 | cm_node->tcp_cntxt.rcv_wscale; | |
9d5ab133 | 2335 | loopbackremotenode->state = NES_CM_STATE_MPAREQ_RCVD; |
3c2d774c GS |
2336 | create_event(loopbackremotenode, NES_CM_EVENT_MPA_REQ); |
2337 | } | |
2338 | return cm_node; | |
2339 | } | |
2340 | ||
615eb715 TN |
2341 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
2342 | cm_node->mpa_frame_size = private_data_len; | |
6492cdf3 | 2343 | |
615eb715 | 2344 | memcpy(start_buff, private_data, private_data_len); |
3c2d774c GS |
2345 | |
2346 | /* send a syn and goto syn sent state */ | |
2347 | cm_node->state = NES_CM_STATE_SYN_SENT; | |
6492cdf3 FL |
2348 | ret = send_syn(cm_node, 0, NULL); |
2349 | ||
2350 | if (ret) { | |
2351 | /* error in sending the syn free up the cm_node struct */ | |
2352 | nes_debug(NES_DBG_CM, "Api - connect() FAILED: dest " | |
615eb715 TN |
2353 | "addr=0x%08X, port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2354 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2355 | cm_node->cm_id); | |
6492cdf3 FL |
2356 | rem_ref_cm_node(cm_node->cm_core, cm_node); |
2357 | cm_node = NULL; | |
2358 | } | |
3c2d774c | 2359 | |
615eb715 | 2360 | if (cm_node) { |
6492cdf3 | 2361 | nes_debug(NES_DBG_CM, "Api - connect(): dest addr=0x%08X," |
615eb715 TN |
2362 | "port=0x%04x, cm_node=%p, cm_id = %p.\n", |
2363 | cm_node->rem_addr, cm_node->rem_port, cm_node, | |
2364 | cm_node->cm_id); | |
2365 | } | |
3c2d774c GS |
2366 | |
2367 | return cm_node; | |
2368 | } | |
2369 | ||
2370 | ||
2371 | /** | |
2372 | * mini_cm_accept - accept a connection | |
2373 | * This function is never called | |
2374 | */ | |
615eb715 | 2375 | static int mini_cm_accept(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2376 | { |
2377 | return 0; | |
2378 | } | |
2379 | ||
2380 | ||
2381 | /** | |
2382 | * mini_cm_reject - reject and teardown a connection | |
2383 | */ | |
615eb715 | 2384 | static int mini_cm_reject(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2385 | { |
2386 | int ret = 0; | |
9d5ab133 | 2387 | int err = 0; |
183ecfa3 | 2388 | int passive_state; |
9d5ab133 FL |
2389 | struct nes_cm_event event; |
2390 | struct iw_cm_id *cm_id = cm_node->cm_id; | |
2391 | struct nes_cm_node *loopback = cm_node->loopbackpartner; | |
3c2d774c | 2392 | |
6492cdf3 | 2393 | nes_debug(NES_DBG_CM, "%s cm_node=%p type=%d state=%d\n", |
615eb715 | 2394 | __func__, cm_node, cm_node->tcp_cntxt.client, cm_node->state); |
3c2d774c | 2395 | |
6492cdf3 FL |
2396 | if (cm_node->tcp_cntxt.client) |
2397 | return ret; | |
2398 | cleanup_retrans_entry(cm_node); | |
3c2d774c | 2399 | |
9d5ab133 FL |
2400 | if (!loopback) { |
2401 | passive_state = atomic_add_return(1, &cm_node->passive_state); | |
2402 | if (passive_state == NES_SEND_RESET_EVENT) { | |
2403 | cm_node->state = NES_CM_STATE_CLOSED; | |
2404 | rem_ref_cm_node(cm_core, cm_node); | |
2405 | } else { | |
c5a7d489 FL |
2406 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2407 | rem_ref_cm_node(cm_core, cm_node); | |
2408 | } else { | |
2409 | ret = send_mpa_reject(cm_node); | |
2410 | if (ret) { | |
2411 | cm_node->state = NES_CM_STATE_CLOSED; | |
2412 | err = send_reset(cm_node, NULL); | |
2413 | if (err) | |
2414 | WARN_ON(1); | |
615eb715 | 2415 | } else { |
c5a7d489 | 2416 | cm_id->add_ref(cm_id); |
615eb715 | 2417 | } |
c5a7d489 | 2418 | } |
9d5ab133 FL |
2419 | } |
2420 | } else { | |
2421 | cm_node->cm_id = NULL; | |
c5a7d489 FL |
2422 | if (cm_node->state == NES_CM_STATE_LISTENER_DESTROYED) { |
2423 | rem_ref_cm_node(cm_core, cm_node); | |
2424 | rem_ref_cm_node(cm_core, loopback); | |
2425 | } else { | |
2426 | event.cm_node = loopback; | |
2427 | event.cm_info.rem_addr = loopback->rem_addr; | |
2428 | event.cm_info.loc_addr = loopback->loc_addr; | |
2429 | event.cm_info.rem_port = loopback->rem_port; | |
2430 | event.cm_info.loc_port = loopback->loc_port; | |
2431 | event.cm_info.cm_id = loopback->cm_id; | |
2432 | cm_event_mpa_reject(&event); | |
2433 | rem_ref_cm_node(cm_core, cm_node); | |
2434 | loopback->state = NES_CM_STATE_CLOSING; | |
9d5ab133 | 2435 | |
c5a7d489 FL |
2436 | cm_id = loopback->cm_id; |
2437 | rem_ref_cm_node(cm_core, loopback); | |
2438 | cm_id->rem_ref(cm_id); | |
2439 | } | |
9d5ab133 FL |
2440 | } |
2441 | ||
3c2d774c GS |
2442 | return ret; |
2443 | } | |
2444 | ||
2445 | ||
2446 | /** | |
2447 | * mini_cm_close | |
2448 | */ | |
1a855fbf | 2449 | static int mini_cm_close(struct nes_cm_core *cm_core, struct nes_cm_node *cm_node) |
3c2d774c GS |
2450 | { |
2451 | int ret = 0; | |
2452 | ||
2453 | if (!cm_core || !cm_node) | |
2454 | return -EINVAL; | |
2455 | ||
2456 | switch (cm_node->state) { | |
6492cdf3 FL |
2457 | case NES_CM_STATE_SYN_RCVD: |
2458 | case NES_CM_STATE_SYN_SENT: | |
2459 | case NES_CM_STATE_ONE_SIDE_ESTABLISHED: | |
2460 | case NES_CM_STATE_ESTABLISHED: | |
2461 | case NES_CM_STATE_ACCEPTING: | |
2462 | case NES_CM_STATE_MPAREQ_SENT: | |
2463 | case NES_CM_STATE_MPAREQ_RCVD: | |
2464 | cleanup_retrans_entry(cm_node); | |
2465 | send_reset(cm_node, NULL); | |
2466 | break; | |
2467 | case NES_CM_STATE_CLOSE_WAIT: | |
2468 | cm_node->state = NES_CM_STATE_LAST_ACK; | |
2469 | send_fin(cm_node, NULL); | |
2470 | break; | |
2471 | case NES_CM_STATE_FIN_WAIT1: | |
2472 | case NES_CM_STATE_FIN_WAIT2: | |
2473 | case NES_CM_STATE_LAST_ACK: | |
2474 | case NES_CM_STATE_TIME_WAIT: | |
2475 | case NES_CM_STATE_CLOSING: | |
2476 | ret = -1; | |
2477 | break; | |
2478 | case NES_CM_STATE_LISTENING: | |
886f98a3 FL |
2479 | cleanup_retrans_entry(cm_node); |
2480 | send_reset(cm_node, NULL); | |
2481 | break; | |
2482 | case NES_CM_STATE_MPAREJ_RCVD: | |
6492cdf3 FL |
2483 | case NES_CM_STATE_UNKNOWN: |
2484 | case NES_CM_STATE_INITED: | |
2485 | case NES_CM_STATE_CLOSED: | |
c5a7d489 | 2486 | case NES_CM_STATE_LISTENER_DESTROYED: |
6492cdf3 FL |
2487 | ret = rem_ref_cm_node(cm_core, cm_node); |
2488 | break; | |
2489 | case NES_CM_STATE_TSA: | |
2490 | if (cm_node->send_entry) | |
2491 | printk(KERN_ERR "ERROR Close got called from STATE_TSA " | |
615eb715 | 2492 | "send_entry=%p\n", cm_node->send_entry); |
6492cdf3 FL |
2493 | ret = rem_ref_cm_node(cm_core, cm_node); |
2494 | break; | |
3c2d774c | 2495 | } |
3c2d774c GS |
2496 | return ret; |
2497 | } | |
2498 | ||
2499 | ||
2500 | /** | |
2501 | * recv_pkt - recv an ETHERNET packet, and process it through CM | |
2502 | * node state machine | |
2503 | */ | |
4a14f6a7 | 2504 | static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, |
615eb715 | 2505 | struct nes_vnic *nesvnic, struct sk_buff *skb) |
3c2d774c GS |
2506 | { |
2507 | struct nes_cm_node *cm_node = NULL; | |
2508 | struct nes_cm_listener *listener = NULL; | |
2509 | struct iphdr *iph; | |
2510 | struct tcphdr *tcph; | |
2511 | struct nes_cm_info nfo; | |
4a14f6a7 | 2512 | int skb_handled = 1; |
03080e5c | 2513 | __be32 tmp_daddr, tmp_saddr; |
3c2d774c | 2514 | |
6492cdf3 | 2515 | if (!skb) |
4a14f6a7 | 2516 | return 0; |
615eb715 | 2517 | if (skb->len < sizeof(struct iphdr) + sizeof(struct tcphdr)) |
4a14f6a7 | 2518 | return 0; |
3c2d774c GS |
2519 | |
2520 | iph = (struct iphdr *)skb->data; | |
2521 | tcph = (struct tcphdr *)(skb->data + sizeof(struct iphdr)); | |
3c2d774c GS |
2522 | |
2523 | nfo.loc_addr = ntohl(iph->daddr); | |
2524 | nfo.loc_port = ntohs(tcph->dest); | |
2525 | nfo.rem_addr = ntohl(iph->saddr); | |
2526 | nfo.rem_port = ntohs(tcph->source); | |
2527 | ||
03080e5c HH |
2528 | tmp_daddr = cpu_to_be32(iph->daddr); |
2529 | tmp_saddr = cpu_to_be32(iph->saddr); | |
2530 | ||
63779436 | 2531 | nes_debug(NES_DBG_CM, "Received packet: dest=%pI4:0x%04X src=%pI4:0x%04X\n", |
03080e5c | 2532 | &tmp_daddr, tcph->dest, &tmp_saddr, tcph->source); |
3c2d774c | 2533 | |
6492cdf3 FL |
2534 | do { |
2535 | cm_node = find_node(cm_core, | |
615eb715 TN |
2536 | nfo.rem_port, nfo.rem_addr, |
2537 | nfo.loc_port, nfo.loc_addr); | |
3c2d774c | 2538 | |
3c2d774c | 2539 | if (!cm_node) { |
6492cdf3 FL |
2540 | /* Only type of packet accepted are for */ |
2541 | /* the PASSIVE open (syn only) */ | |
2542 | if ((!tcph->syn) || (tcph->ack)) { | |
4a14f6a7 | 2543 | skb_handled = 0; |
6492cdf3 FL |
2544 | break; |
2545 | } | |
2546 | listener = find_listener(cm_core, nfo.loc_addr, | |
615eb715 TN |
2547 | nfo.loc_port, |
2548 | NES_CM_LISTENER_ACTIVE_STATE); | |
4a14f6a7 FL |
2549 | if (!listener) { |
2550 | nfo.cm_id = NULL; | |
2551 | nfo.conn_type = 0; | |
2552 | nes_debug(NES_DBG_CM, "Unable to find listener for the pkt\n"); | |
2553 | skb_handled = 0; | |
6492cdf3 FL |
2554 | break; |
2555 | } | |
4a14f6a7 FL |
2556 | nfo.cm_id = listener->cm_id; |
2557 | nfo.conn_type = listener->conn_type; | |
6492cdf3 | 2558 | cm_node = make_cm_node(cm_core, nesvnic, &nfo, |
615eb715 | 2559 | listener); |
6492cdf3 FL |
2560 | if (!cm_node) { |
2561 | nes_debug(NES_DBG_CM, "Unable to allocate " | |
615eb715 | 2562 | "node\n"); |
6492cdf3 | 2563 | cm_packets_dropped++; |
3c2d774c | 2564 | atomic_dec(&listener->ref_count); |
6492cdf3 FL |
2565 | dev_kfree_skb_any(skb); |
2566 | break; | |
3c2d774c | 2567 | } |
6492cdf3 FL |
2568 | if (!tcph->rst && !tcph->fin) { |
2569 | cm_node->state = NES_CM_STATE_LISTENING; | |
2570 | } else { | |
2571 | cm_packets_dropped++; | |
2572 | rem_ref_cm_node(cm_core, cm_node); | |
2573 | dev_kfree_skb_any(skb); | |
2574 | break; | |
3c2d774c | 2575 | } |
6492cdf3 FL |
2576 | add_ref_cm_node(cm_node); |
2577 | } else if (cm_node->state == NES_CM_STATE_TSA) { | |
0f0bee8b FL |
2578 | if (cm_node->nesqp->pau_mode) |
2579 | nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp); | |
2580 | else { | |
2581 | rem_ref_cm_node(cm_core, cm_node); | |
2582 | atomic_inc(&cm_accel_dropped_pkts); | |
2583 | dev_kfree_skb_any(skb); | |
2584 | } | |
6492cdf3 | 2585 | break; |
3c2d774c | 2586 | } |
4a14f6a7 FL |
2587 | skb_reset_network_header(skb); |
2588 | skb_set_transport_header(skb, sizeof(*tcph)); | |
2589 | skb->len = ntohs(iph->tot_len); | |
6492cdf3 FL |
2590 | process_packet(cm_node, skb, cm_core); |
2591 | rem_ref_cm_node(cm_core, cm_node); | |
2592 | } while (0); | |
4a14f6a7 | 2593 | return skb_handled; |
3c2d774c GS |
2594 | } |
2595 | ||
2596 | ||
2597 | /** | |
2598 | * nes_cm_alloc_core - allocate a top level instance of a cm core | |
2599 | */ | |
1a855fbf | 2600 | static struct nes_cm_core *nes_cm_alloc_core(void) |
3c2d774c | 2601 | { |
3c2d774c | 2602 | struct nes_cm_core *cm_core; |
3c2d774c GS |
2603 | |
2604 | /* setup the CM core */ | |
2605 | /* alloc top level core control structure */ | |
2606 | cm_core = kzalloc(sizeof(*cm_core), GFP_KERNEL); | |
2607 | if (!cm_core) | |
2608 | return NULL; | |
2609 | ||
2610 | INIT_LIST_HEAD(&cm_core->connected_nodes); | |
2611 | init_timer(&cm_core->tcp_timer); | |
2612 | cm_core->tcp_timer.function = nes_cm_timer_tick; | |
2613 | ||
615eb715 | 2614 | cm_core->mtu = NES_CM_DEFAULT_MTU; |
3c2d774c GS |
2615 | cm_core->state = NES_CM_STATE_INITED; |
2616 | cm_core->free_tx_pkt_max = NES_CM_DEFAULT_FREE_PKTS; | |
2617 | ||
3c2d774c GS |
2618 | atomic_set(&cm_core->events_posted, 0); |
2619 | ||
3c2d774c GS |
2620 | cm_core->api = &nes_cm_api; |
2621 | ||
2622 | spin_lock_init(&cm_core->ht_lock); | |
2623 | spin_lock_init(&cm_core->listen_list_lock); | |
2624 | ||
2625 | INIT_LIST_HEAD(&cm_core->listen_list.list); | |
2626 | ||
2627 | nes_debug(NES_DBG_CM, "Init CM Core completed -- cm_core=%p\n", cm_core); | |
2628 | ||
2629 | nes_debug(NES_DBG_CM, "Enable QUEUE EVENTS\n"); | |
2630 | cm_core->event_wq = create_singlethread_workqueue("nesewq"); | |
2631 | cm_core->post_event = nes_cm_post_event; | |
2632 | nes_debug(NES_DBG_CM, "Enable QUEUE DISCONNECTS\n"); | |
2633 | cm_core->disconn_wq = create_singlethread_workqueue("nesdwq"); | |
2634 | ||
2635 | print_core(cm_core); | |
2636 | return cm_core; | |
2637 | } | |
2638 | ||
2639 | ||
2640 | /** | |
2641 | * mini_cm_dealloc_core - deallocate a top level instance of a cm core | |
2642 | */ | |
1a855fbf | 2643 | static int mini_cm_dealloc_core(struct nes_cm_core *cm_core) |
3c2d774c GS |
2644 | { |
2645 | nes_debug(NES_DBG_CM, "De-Alloc CM Core (%p)\n", cm_core); | |
2646 | ||
2647 | if (!cm_core) | |
2648 | return -EINVAL; | |
2649 | ||
2650 | barrier(); | |
2651 | ||
615eb715 | 2652 | if (timer_pending(&cm_core->tcp_timer)) |
3c2d774c | 2653 | del_timer(&cm_core->tcp_timer); |
3c2d774c GS |
2654 | |
2655 | destroy_workqueue(cm_core->event_wq); | |
2656 | destroy_workqueue(cm_core->disconn_wq); | |
2657 | nes_debug(NES_DBG_CM, "\n"); | |
2658 | kfree(cm_core); | |
2659 | ||
2660 | return 0; | |
2661 | } | |
2662 | ||
2663 | ||
2664 | /** | |
2665 | * mini_cm_get | |
2666 | */ | |
1a855fbf | 2667 | static int mini_cm_get(struct nes_cm_core *cm_core) |
3c2d774c GS |
2668 | { |
2669 | return cm_core->state; | |
2670 | } | |
2671 | ||
2672 | ||
2673 | /** | |
2674 | * mini_cm_set | |
2675 | */ | |
1a855fbf | 2676 | static int mini_cm_set(struct nes_cm_core *cm_core, u32 type, u32 value) |
3c2d774c GS |
2677 | { |
2678 | int ret = 0; | |
2679 | ||
2680 | switch (type) { | |
9d5ab133 FL |
2681 | case NES_CM_SET_PKT_SIZE: |
2682 | cm_core->mtu = value; | |
2683 | break; | |
2684 | case NES_CM_SET_FREE_PKT_Q_SIZE: | |
2685 | cm_core->free_tx_pkt_max = value; | |
2686 | break; | |
2687 | default: | |
2688 | /* unknown set option */ | |
2689 | ret = -EINVAL; | |
3c2d774c GS |
2690 | } |
2691 | ||
2692 | return ret; | |
2693 | } | |
2694 | ||
2695 | ||
2696 | /** | |
2697 | * nes_cm_init_tsa_conn setup HW; MPA frames must be | |
2698 | * successfully exchanged when this is called | |
2699 | */ | |
2700 | static int nes_cm_init_tsa_conn(struct nes_qp *nesqp, struct nes_cm_node *cm_node) | |
2701 | { | |
2702 | int ret = 0; | |
2703 | ||
2704 | if (!nesqp) | |
2705 | return -EINVAL; | |
2706 | ||
2707 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_IPV4 | | |
615eb715 TN |
2708 | NES_QPCONTEXT_MISC_NO_NAGLE | NES_QPCONTEXT_MISC_DO_NOT_FRAG | |
2709 | NES_QPCONTEXT_MISC_DROS); | |
3c2d774c GS |
2710 | |
2711 | if (cm_node->tcp_cntxt.snd_wscale || cm_node->tcp_cntxt.rcv_wscale) | |
2712 | nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WSCALE); | |
2713 | ||
2714 | nesqp->nesqp_context->misc2 |= cpu_to_le32(64 << NES_QPCONTEXT_MISC2_TTL_SHIFT); | |
2715 | ||
2716 | nesqp->nesqp_context->mss |= cpu_to_le32(((u32)cm_node->tcp_cntxt.mss) << 16); | |
2717 | ||
2718 | nesqp->nesqp_context->tcp_state_flow_label |= cpu_to_le32( | |
615eb715 | 2719 | (u32)NES_QPCONTEXT_TCPSTATE_EST << NES_QPCONTEXT_TCPFLOW_TCP_STATE_SHIFT); |
3c2d774c GS |
2720 | |
2721 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2722 | (cm_node->tcp_cntxt.snd_wscale << NES_QPCONTEXT_PDWSCALE_SND_WSCALE_SHIFT) & |
2723 | NES_QPCONTEXT_PDWSCALE_SND_WSCALE_MASK); | |
3c2d774c GS |
2724 | |
2725 | nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32( | |
615eb715 TN |
2726 | (cm_node->tcp_cntxt.rcv_wscale << NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_SHIFT) & |
2727 | NES_QPCONTEXT_PDWSCALE_RCV_WSCALE_MASK); | |
3c2d774c GS |
2728 | |
2729 | nesqp->nesqp_context->keepalive = cpu_to_le32(0x80); | |
2730 | nesqp->nesqp_context->ts_recent = 0; | |
2731 | nesqp->nesqp_context->ts_age = 0; | |
2732 | nesqp->nesqp_context->snd_nxt = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2733 | nesqp->nesqp_context->snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.snd_wnd); | |
2734 | nesqp->nesqp_context->rcv_nxt = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); | |
2735 | nesqp->nesqp_context->rcv_wnd = cpu_to_le32(cm_node->tcp_cntxt.rcv_wnd << | |
615eb715 | 2736 | cm_node->tcp_cntxt.rcv_wscale); |
3c2d774c GS |
2737 | nesqp->nesqp_context->snd_max = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); |
2738 | nesqp->nesqp_context->snd_una = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2739 | nesqp->nesqp_context->srtt = 0; | |
2740 | nesqp->nesqp_context->rttvar = cpu_to_le32(0x6); | |
2741 | nesqp->nesqp_context->ssthresh = cpu_to_le32(0x3FFFC000); | |
615eb715 | 2742 | nesqp->nesqp_context->cwnd = cpu_to_le32(2 * cm_node->tcp_cntxt.mss); |
3c2d774c GS |
2743 | nesqp->nesqp_context->snd_wl1 = cpu_to_le32(cm_node->tcp_cntxt.rcv_nxt); |
2744 | nesqp->nesqp_context->snd_wl2 = cpu_to_le32(cm_node->tcp_cntxt.loc_seq_num); | |
2745 | nesqp->nesqp_context->max_snd_wnd = cpu_to_le32(cm_node->tcp_cntxt.max_snd_wnd); | |
2746 | ||
2747 | nes_debug(NES_DBG_CM, "QP%u: rcv_nxt = 0x%08X, snd_nxt = 0x%08X," | |
615eb715 TN |
2748 | " Setting MSS to %u, PDWscale = 0x%08X, rcv_wnd = %u, context misc = 0x%08X.\n", |
2749 | nesqp->hwqp.qp_id, le32_to_cpu(nesqp->nesqp_context->rcv_nxt), | |
2750 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
2751 | cm_node->tcp_cntxt.mss, le32_to_cpu(nesqp->nesqp_context->pd_index_wscale), | |
2752 | le32_to_cpu(nesqp->nesqp_context->rcv_wnd), | |
2753 | le32_to_cpu(nesqp->nesqp_context->misc)); | |
3c2d774c GS |
2754 | nes_debug(NES_DBG_CM, " snd_wnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->snd_wnd)); |
2755 | nes_debug(NES_DBG_CM, " snd_cwnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->cwnd)); | |
2756 | nes_debug(NES_DBG_CM, " max_swnd = 0x%08X.\n", le32_to_cpu(nesqp->nesqp_context->max_snd_wnd)); | |
2757 | ||
2758 | nes_debug(NES_DBG_CM, "Change cm_node state to TSA\n"); | |
2759 | cm_node->state = NES_CM_STATE_TSA; | |
2760 | ||
2761 | return ret; | |
2762 | } | |
2763 | ||
2764 | ||
2765 | /** | |
2766 | * nes_cm_disconn | |
2767 | */ | |
2768 | int nes_cm_disconn(struct nes_qp *nesqp) | |
2769 | { | |
873fcdd4 | 2770 | struct disconn_work *work; |
3c2d774c | 2771 | |
873fcdd4 DW |
2772 | work = kzalloc(sizeof *work, GFP_ATOMIC); |
2773 | if (!work) | |
615eb715 | 2774 | return -ENOMEM; /* Timer will clean up */ |
3c2d774c | 2775 | |
873fcdd4 DW |
2776 | nes_add_ref(&nesqp->ibqp); |
2777 | work->nesqp = nesqp; | |
2778 | INIT_WORK(&work->work, nes_disconnect_worker); | |
2779 | queue_work(g_cm_core->disconn_wq, &work->work); | |
3c2d774c GS |
2780 | return 0; |
2781 | } | |
2782 | ||
2783 | ||
2784 | /** | |
2785 | * nes_disconnect_worker | |
2786 | */ | |
1a855fbf | 2787 | static void nes_disconnect_worker(struct work_struct *work) |
3c2d774c | 2788 | { |
873fcdd4 DW |
2789 | struct disconn_work *dwork = container_of(work, struct disconn_work, work); |
2790 | struct nes_qp *nesqp = dwork->nesqp; | |
3c2d774c | 2791 | |
873fcdd4 | 2792 | kfree(dwork); |
3c2d774c | 2793 | nes_debug(NES_DBG_CM, "processing AEQE id 0x%04X for QP%u.\n", |
615eb715 | 2794 | nesqp->last_aeq, nesqp->hwqp.qp_id); |
3c2d774c | 2795 | nes_cm_disconn_true(nesqp); |
c4c3f279 | 2796 | nes_rem_ref(&nesqp->ibqp); |
3c2d774c GS |
2797 | } |
2798 | ||
2799 | ||
2800 | /** | |
2801 | * nes_cm_disconn_true | |
2802 | */ | |
1a855fbf | 2803 | static int nes_cm_disconn_true(struct nes_qp *nesqp) |
3c2d774c GS |
2804 | { |
2805 | unsigned long flags; | |
2806 | int ret = 0; | |
2807 | struct iw_cm_id *cm_id; | |
2808 | struct iw_cm_event cm_event; | |
2809 | struct nes_vnic *nesvnic; | |
2810 | u16 last_ae; | |
2811 | u8 original_hw_tcp_state; | |
2812 | u8 original_ibqp_state; | |
d0c49bf3 | 2813 | int disconn_status = 0; |
b29a4fc4 DW |
2814 | int issue_disconn = 0; |
2815 | int issue_close = 0; | |
2816 | int issue_flush = 0; | |
2817 | u32 flush_q = NES_CQP_FLUSH_RQ; | |
2818 | struct ib_event ibevent; | |
3c2d774c GS |
2819 | |
2820 | if (!nesqp) { | |
2821 | nes_debug(NES_DBG_CM, "disconnect_worker nesqp is NULL\n"); | |
2822 | return -1; | |
2823 | } | |
2824 | ||
2825 | spin_lock_irqsave(&nesqp->lock, flags); | |
2826 | cm_id = nesqp->cm_id; | |
2827 | /* make sure we havent already closed this connection */ | |
2828 | if (!cm_id) { | |
2829 | nes_debug(NES_DBG_CM, "QP%u disconnect_worker cmid is NULL\n", | |
615eb715 | 2830 | nesqp->hwqp.qp_id); |
3c2d774c | 2831 | spin_unlock_irqrestore(&nesqp->lock, flags); |
3c2d774c GS |
2832 | return -1; |
2833 | } | |
2834 | ||
2835 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
2836 | nes_debug(NES_DBG_CM, "Disconnecting QP%u\n", nesqp->hwqp.qp_id); | |
2837 | ||
2838 | original_hw_tcp_state = nesqp->hw_tcp_state; | |
615eb715 | 2839 | original_ibqp_state = nesqp->ibqp_state; |
3c2d774c GS |
2840 | last_ae = nesqp->last_aeq; |
2841 | ||
b29a4fc4 DW |
2842 | if (nesqp->term_flags) { |
2843 | issue_disconn = 1; | |
2844 | issue_close = 1; | |
2845 | nesqp->cm_id = NULL; | |
196f40c8 | 2846 | del_timer(&nesqp->terminate_timer); |
b29a4fc4 DW |
2847 | if (nesqp->flush_issued == 0) { |
2848 | nesqp->flush_issued = 1; | |
2849 | issue_flush = 1; | |
2850 | } | |
2851 | } else if ((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSE_WAIT) || | |
2852 | ((original_ibqp_state == IB_QPS_RTS) && | |
2853 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
2854 | issue_disconn = 1; | |
2855 | if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET) | |
d0c49bf3 | 2856 | disconn_status = -ECONNRESET; |
b29a4fc4 DW |
2857 | } |
2858 | ||
2859 | if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) || | |
2860 | (original_hw_tcp_state == NES_AEQE_TCP_STATE_TIME_WAIT) || | |
2861 | (last_ae == NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) || | |
2862 | (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) { | |
2863 | issue_close = 1; | |
2864 | nesqp->cm_id = NULL; | |
2865 | if (nesqp->flush_issued == 0) { | |
2866 | nesqp->flush_issued = 1; | |
2867 | issue_flush = 1; | |
2868 | } | |
2869 | } | |
3c2d774c | 2870 | |
b29a4fc4 DW |
2871 | spin_unlock_irqrestore(&nesqp->lock, flags); |
2872 | ||
2873 | if ((issue_flush) && (nesqp->destroyed == 0)) { | |
2874 | /* Flush the queue(s) */ | |
2875 | if (nesqp->hw_iwarp_state >= NES_AEQE_IWARP_STATE_TERMINATE) | |
2876 | flush_q |= NES_CQP_FLUSH_SQ; | |
2877 | flush_wqes(nesvnic->nesdev, nesqp, flush_q, 1); | |
2878 | ||
2879 | if (nesqp->term_flags) { | |
2880 | ibevent.device = nesqp->ibqp.device; | |
2881 | ibevent.event = nesqp->terminate_eventtype; | |
2882 | ibevent.element.qp = &nesqp->ibqp; | |
784d135f TN |
2883 | if (nesqp->ibqp.event_handler) |
2884 | nesqp->ibqp.event_handler(&ibevent, nesqp->ibqp.qp_context); | |
b29a4fc4 DW |
2885 | } |
2886 | } | |
3c2d774c | 2887 | |
b29a4fc4 DW |
2888 | if ((cm_id) && (cm_id->event_handler)) { |
2889 | if (issue_disconn) { | |
3c2d774c GS |
2890 | atomic_inc(&cm_disconnects); |
2891 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
b29a4fc4 | 2892 | cm_event.status = disconn_status; |
3c2d774c GS |
2893 | cm_event.local_addr = cm_id->local_addr; |
2894 | cm_event.remote_addr = cm_id->remote_addr; | |
2895 | cm_event.private_data = NULL; | |
2896 | cm_event.private_data_len = 0; | |
2897 | ||
6492cdf3 | 2898 | nes_debug(NES_DBG_CM, "Generating a CM Disconnect Event" |
615eb715 TN |
2899 | " for QP%u, SQ Head = %u, SQ Tail = %u. " |
2900 | "cm_id = %p, refcount = %u.\n", | |
2901 | nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, | |
2902 | nesqp->hwqp.sq_tail, cm_id, | |
2903 | atomic_read(&nesqp->refcount)); | |
3c2d774c | 2904 | |
3c2d774c GS |
2905 | ret = cm_id->event_handler(cm_id, &cm_event); |
2906 | if (ret) | |
6492cdf3 | 2907 | nes_debug(NES_DBG_CM, "OFA CM event_handler " |
615eb715 | 2908 | "returned, ret=%d\n", ret); |
3c2d774c GS |
2909 | } |
2910 | ||
b29a4fc4 | 2911 | if (issue_close) { |
3c2d774c | 2912 | atomic_inc(&cm_closes); |
3c2d774c GS |
2913 | nes_disconnect(nesqp, 1); |
2914 | ||
2915 | cm_id->provider_data = nesqp; | |
2916 | /* Send up the close complete event */ | |
2917 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 2918 | cm_event.status = 0; |
3c2d774c GS |
2919 | cm_event.provider_data = cm_id->provider_data; |
2920 | cm_event.local_addr = cm_id->local_addr; | |
2921 | cm_event.remote_addr = cm_id->remote_addr; | |
2922 | cm_event.private_data = NULL; | |
2923 | cm_event.private_data_len = 0; | |
2924 | ||
2925 | ret = cm_id->event_handler(cm_id, &cm_event); | |
615eb715 | 2926 | if (ret) |
3c2d774c | 2927 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3c2d774c GS |
2928 | |
2929 | cm_id->rem_ref(cm_id); | |
3c2d774c | 2930 | } |
3c2d774c | 2931 | } |
3c2d774c GS |
2932 | |
2933 | return 0; | |
2934 | } | |
2935 | ||
2936 | ||
2937 | /** | |
2938 | * nes_disconnect | |
2939 | */ | |
1a855fbf | 2940 | static int nes_disconnect(struct nes_qp *nesqp, int abrupt) |
3c2d774c GS |
2941 | { |
2942 | int ret = 0; | |
2943 | struct nes_vnic *nesvnic; | |
2944 | struct nes_device *nesdev; | |
c12e56ef | 2945 | struct nes_ib_device *nesibdev; |
3c2d774c GS |
2946 | |
2947 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
2948 | if (!nesvnic) | |
2949 | return -EINVAL; | |
2950 | ||
2951 | nesdev = nesvnic->nesdev; | |
c12e56ef | 2952 | nesibdev = nesvnic->nesibdev; |
3c2d774c GS |
2953 | |
2954 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 2955 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c GS |
2956 | |
2957 | if (nesqp->active_conn) { | |
2958 | ||
2959 | /* indicate this connection is NOT active */ | |
2960 | nesqp->active_conn = 0; | |
2961 | } else { | |
2962 | /* Need to free the Last Streaming Mode Message */ | |
2963 | if (nesqp->ietf_frame) { | |
c12e56ef FL |
2964 | if (nesqp->lsmm_mr) |
2965 | nesibdev->ibdev.dereg_mr(nesqp->lsmm_mr); | |
3c2d774c | 2966 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
2967 | nesqp->private_data_len + nesqp->ietf_frame_size, |
2968 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
3c2d774c GS |
2969 | } |
2970 | } | |
2971 | ||
2972 | /* close the CM node down if it is still active */ | |
2973 | if (nesqp->cm_node) { | |
2974 | nes_debug(NES_DBG_CM, "Call close API\n"); | |
2975 | ||
2976 | g_cm_core->api->close(g_cm_core, nesqp->cm_node); | |
3c2d774c GS |
2977 | } |
2978 | ||
2979 | return ret; | |
2980 | } | |
2981 | ||
2982 | ||
2983 | /** | |
2984 | * nes_accept | |
2985 | */ | |
2986 | int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
2987 | { | |
2988 | u64 u64temp; | |
2989 | struct ib_qp *ibqp; | |
2990 | struct nes_qp *nesqp; | |
2991 | struct nes_vnic *nesvnic; | |
2992 | struct nes_device *nesdev; | |
2993 | struct nes_cm_node *cm_node; | |
2994 | struct nes_adapter *adapter; | |
2995 | struct ib_qp_attr attr; | |
2996 | struct iw_cm_event cm_event; | |
2997 | struct nes_hw_qp_wqe *wqe; | |
2998 | struct nes_v4_quad nes_quad; | |
30da7cff | 2999 | u32 crc_value; |
3c2d774c | 3000 | int ret; |
183ecfa3 | 3001 | int passive_state; |
c12e56ef FL |
3002 | struct nes_ib_device *nesibdev; |
3003 | struct ib_mr *ibmr = NULL; | |
3004 | struct ib_phys_buf ibphysbuf; | |
3005 | struct nes_pd *nespd; | |
7a5efb62 | 3006 | u64 tagged_offset; |
615eb715 TN |
3007 | u8 mpa_frame_offset = 0; |
3008 | struct ietf_mpa_v2 *mpa_v2_frame; | |
3009 | u8 start_addr = 0; | |
3010 | u8 *start_ptr = &start_addr; | |
3011 | u8 **start_buff = &start_ptr; | |
3012 | u16 buff_len = 0; | |
c12e56ef | 3013 | |
3c2d774c GS |
3014 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); |
3015 | if (!ibqp) | |
3016 | return -EINVAL; | |
3017 | ||
3018 | /* get all our handles */ | |
3019 | nesqp = to_nesqp(ibqp); | |
3020 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3021 | nesdev = nesvnic->nesdev; | |
3022 | adapter = nesdev->nesadapter; | |
3023 | ||
3c2d774c | 3024 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
6492cdf3 FL |
3025 | nes_debug(NES_DBG_CM, "nes_accept: cm_node= %p nesvnic=%p, netdev=%p," |
3026 | "%s\n", cm_node, nesvnic, nesvnic->netdev, | |
3027 | nesvnic->netdev->name); | |
3c2d774c | 3028 | |
c5a7d489 FL |
3029 | if (NES_CM_STATE_LISTENER_DESTROYED == cm_node->state) { |
3030 | if (cm_node->loopbackpartner) | |
3031 | rem_ref_cm_node(cm_node->cm_core, cm_node->loopbackpartner); | |
3032 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3033 | return -EINVAL; | |
3034 | } | |
3035 | ||
dae58728 FL |
3036 | passive_state = atomic_add_return(1, &cm_node->passive_state); |
3037 | if (passive_state == NES_SEND_RESET_EVENT) { | |
3038 | rem_ref_cm_node(cm_node->cm_core, cm_node); | |
3039 | return -ECONNRESET; | |
3040 | } | |
3041 | ||
3c2d774c GS |
3042 | /* associate the node with the QP */ |
3043 | nesqp->cm_node = (void *)cm_node; | |
6492cdf3 | 3044 | cm_node->nesqp = nesqp; |
3c2d774c | 3045 | |
6492cdf3 FL |
3046 | nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n", |
3047 | nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener); | |
3c2d774c GS |
3048 | atomic_inc(&cm_accepts); |
3049 | ||
3050 | nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n", | |
29b4433d | 3051 | netdev_refcnt_read(nesvnic->netdev)); |
3c2d774c | 3052 | |
615eb715 | 3053 | nesqp->ietf_frame_size = sizeof(struct ietf_mpa_v2); |
6492cdf3 FL |
3054 | /* allocate the ietf frame and space for private data */ |
3055 | nesqp->ietf_frame = pci_alloc_consistent(nesdev->pcidev, | |
615eb715 TN |
3056 | nesqp->ietf_frame_size + conn_param->private_data_len, |
3057 | &nesqp->ietf_frame_pbase); | |
3c2d774c | 3058 | |
6492cdf3 | 3059 | if (!nesqp->ietf_frame) { |
615eb715 | 3060 | nes_debug(NES_DBG_CM, "Unable to allocate memory for private data\n"); |
6492cdf3 FL |
3061 | return -ENOMEM; |
3062 | } | |
615eb715 | 3063 | mpa_v2_frame = (struct ietf_mpa_v2 *)nesqp->ietf_frame; |
3c2d774c | 3064 | |
615eb715 TN |
3065 | if (cm_node->mpa_frame_rev == IETF_MPA_V1) |
3066 | mpa_frame_offset = 4; | |
3c2d774c | 3067 | |
615eb715 TN |
3068 | memcpy(mpa_v2_frame->priv_data, conn_param->private_data, |
3069 | conn_param->private_data_len); | |
3c2d774c | 3070 | |
615eb715 TN |
3071 | cm_build_mpa_frame(cm_node, start_buff, &buff_len, nesqp->ietf_frame, MPA_KEY_REPLY); |
3072 | nesqp->private_data_len = conn_param->private_data_len; | |
3c2d774c | 3073 | |
6492cdf3 FL |
3074 | /* setup our first outgoing iWarp send WQE (the IETF frame response) */ |
3075 | wqe = &nesqp->hwqp.sq_vbase[0]; | |
3076 | ||
3077 | if (cm_id->remote_addr.sin_addr.s_addr != | |
615eb715 | 3078 | cm_id->local_addr.sin_addr.s_addr) { |
6492cdf3 | 3079 | u64temp = (unsigned long)nesqp; |
c12e56ef FL |
3080 | nesibdev = nesvnic->nesibdev; |
3081 | nespd = nesqp->nespd; | |
615eb715 TN |
3082 | ibphysbuf.addr = nesqp->ietf_frame_pbase + mpa_frame_offset; |
3083 | ibphysbuf.size = buff_len; | |
3084 | tagged_offset = (u64)(unsigned long)*start_buff; | |
c12e56ef | 3085 | ibmr = nesibdev->ibdev.reg_phys_mr((struct ib_pd *)nespd, |
615eb715 TN |
3086 | &ibphysbuf, 1, |
3087 | IB_ACCESS_LOCAL_WRITE, | |
3088 | &tagged_offset); | |
c12e56ef FL |
3089 | if (!ibmr) { |
3090 | nes_debug(NES_DBG_CM, "Unable to register memory region" | |
615eb715 TN |
3091 | "for lSMM for cm_node = %p \n", |
3092 | cm_node); | |
9256b251 | 3093 | pci_free_consistent(nesdev->pcidev, |
615eb715 TN |
3094 | nesqp->private_data_len + nesqp->ietf_frame_size, |
3095 | nesqp->ietf_frame, nesqp->ietf_frame_pbase); | |
c12e56ef FL |
3096 | return -ENOMEM; |
3097 | } | |
3098 | ||
3099 | ibmr->pd = &nespd->ibpd; | |
3100 | ibmr->device = nespd->ibpd.device; | |
3101 | nesqp->lsmm_mr = ibmr; | |
3102 | ||
615eb715 | 3103 | u64temp |= NES_SW_CONTEXT_ALIGN >> 1; |
6492cdf3 | 3104 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3105 | NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, |
3106 | u64temp); | |
6492cdf3 FL |
3107 | wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = |
3108 | cpu_to_le32(NES_IWARP_SQ_WQE_STREAMING | | |
615eb715 | 3109 | NES_IWARP_SQ_WQE_WRPDU); |
6492cdf3 | 3110 | wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX] = |
615eb715 | 3111 | cpu_to_le32(buff_len); |
c12e56ef | 3112 | set_wqe_64bit_value(wqe->wqe_words, |
615eb715 TN |
3113 | NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, |
3114 | (u64)(unsigned long)(*start_buff)); | |
6492cdf3 | 3115 | wqe->wqe_words[NES_IWARP_SQ_WQE_LENGTH0_IDX] = |
615eb715 | 3116 | cpu_to_le32(buff_len); |
c12e56ef | 3117 | wqe->wqe_words[NES_IWARP_SQ_WQE_STAG0_IDX] = ibmr->lkey; |
d2fa9b26 FL |
3118 | if (nesqp->sq_kmapped) { |
3119 | nesqp->sq_kmapped = 0; | |
3120 | kunmap(nesqp->page); | |
3121 | } | |
6492cdf3 FL |
3122 | |
3123 | nesqp->nesqp_context->ird_ord_sizes |= | |
3124 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_LSMM_PRESENT | | |
615eb715 | 3125 | NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3126 | } else { |
3127 | nesqp->nesqp_context->ird_ord_sizes |= | |
9d5ab133 | 3128 | cpu_to_le32(NES_QPCONTEXT_ORDIRD_WRPDU); |
6492cdf3 FL |
3129 | } |
3130 | nesqp->skip_lsmm = 1; | |
3c2d774c GS |
3131 | |
3132 | ||
3133 | /* Cache the cm_id in the qp */ | |
3134 | nesqp->cm_id = cm_id; | |
3135 | cm_node->cm_id = cm_id; | |
3136 | ||
3137 | /* nesqp->cm_node = (void *)cm_id->provider_data; */ | |
3138 | cm_id->provider_data = nesqp; | |
615eb715 | 3139 | nesqp->active_conn = 0; |
3c2d774c | 3140 | |
6492cdf3 FL |
3141 | if (cm_node->state == NES_CM_STATE_TSA) |
3142 | nes_debug(NES_DBG_CM, "Already state = TSA for cm_node=%p\n", | |
615eb715 | 3143 | cm_node); |
6492cdf3 | 3144 | |
3c2d774c GS |
3145 | nes_cm_init_tsa_conn(nesqp, cm_node); |
3146 | ||
6492cdf3 FL |
3147 | nesqp->nesqp_context->tcpPorts[0] = |
3148 | cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); | |
3149 | nesqp->nesqp_context->tcpPorts[1] = | |
3150 | cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); | |
3151 | ||
ef3d0c4a | 3152 | nesqp->nesqp_context->ip0 = |
6492cdf3 | 3153 | cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); |
3c2d774c GS |
3154 | |
3155 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
615eb715 TN |
3156 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3157 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3158 | |
6492cdf3 FL |
3159 | nesqp->nesqp_context->arp_index_vlan |= |
3160 | cpu_to_le32(nes_arp_table(nesdev, | |
615eb715 TN |
3161 | le32_to_cpu(nesqp->nesqp_context->ip0), NULL, |
3162 | NES_ARP_RESOLVE) << 16); | |
3c2d774c GS |
3163 | |
3164 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
6492cdf3 | 3165 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); |
3c2d774c GS |
3166 | |
3167 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3168 | ||
3169 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32( | |
6492cdf3 FL |
3170 | ((u32)1 << NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT)); |
3171 | nesqp->nesqp_context->ird_ord_sizes |= | |
3172 | cpu_to_le32((u32)conn_param->ord); | |
3c2d774c GS |
3173 | |
3174 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
6492cdf3 FL |
3175 | nes_quad.DstIpAdrIndex = |
3176 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
ef3d0c4a | 3177 | nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; |
6492cdf3 FL |
3178 | nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; |
3179 | nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; | |
3c2d774c GS |
3180 | |
3181 | /* Produce hash key */ | |
30da7cff FL |
3182 | crc_value = get_crc_value(&nes_quad); |
3183 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3184 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, CRC = 0x%08X\n", |
615eb715 | 3185 | nesqp->hte_index, nesqp->hte_index & adapter->hte_index_mask); |
3c2d774c GS |
3186 | |
3187 | nesqp->hte_index &= adapter->hte_index_mask; | |
3188 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3189 | ||
3190 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); | |
3191 | ||
6492cdf3 | 3192 | nes_debug(NES_DBG_CM, "QP%u, Destination IP = 0x%08X:0x%04X, local = " |
615eb715 TN |
3193 | "0x%08X:0x%04X, rcv_nxt=0x%08X, snd_nxt=0x%08X, mpa + " |
3194 | "private data length=%u.\n", nesqp->hwqp.qp_id, | |
3195 | ntohl(cm_id->remote_addr.sin_addr.s_addr), | |
3196 | ntohs(cm_id->remote_addr.sin_port), | |
3197 | ntohl(cm_id->local_addr.sin_addr.s_addr), | |
3198 | ntohs(cm_id->local_addr.sin_port), | |
3199 | le32_to_cpu(nesqp->nesqp_context->rcv_nxt), | |
3200 | le32_to_cpu(nesqp->nesqp_context->snd_nxt), | |
3201 | buff_len); | |
3c2d774c | 3202 | |
73ac36ea | 3203 | /* notify OF layer that accept event was successful */ |
3c2d774c | 3204 | cm_id->add_ref(cm_id); |
9256b251 | 3205 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3206 | |
3207 | cm_event.event = IW_CM_EVENT_ESTABLISHED; | |
d0c49bf3 | 3208 | cm_event.status = 0; |
3c2d774c GS |
3209 | cm_event.provider_data = (void *)nesqp; |
3210 | cm_event.local_addr = cm_id->local_addr; | |
3211 | cm_event.remote_addr = cm_id->remote_addr; | |
3212 | cm_event.private_data = NULL; | |
3213 | cm_event.private_data_len = 0; | |
3214 | ret = cm_id->event_handler(cm_id, &cm_event); | |
183ecfa3 FL |
3215 | attr.qp_state = IB_QPS_RTS; |
3216 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3217 | if (cm_node->loopbackpartner) { |
6492cdf3 FL |
3218 | cm_node->loopbackpartner->mpa_frame_size = |
3219 | nesqp->private_data_len; | |
3c2d774c | 3220 | /* copy entire MPA frame to our cm_node's frame */ |
6492cdf3 | 3221 | memcpy(cm_node->loopbackpartner->mpa_frame_buf, |
615eb715 | 3222 | conn_param->private_data, conn_param->private_data_len); |
3c2d774c GS |
3223 | create_event(cm_node->loopbackpartner, NES_CM_EVENT_CONNECTED); |
3224 | } | |
3225 | if (ret) | |
6492cdf3 | 3226 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3227 | "ret=%d\n", __func__, __LINE__, ret); |
3c2d774c GS |
3228 | |
3229 | return 0; | |
3230 | } | |
3231 | ||
3232 | ||
3233 | /** | |
3234 | * nes_reject | |
3235 | */ | |
3236 | int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
3237 | { | |
3238 | struct nes_cm_node *cm_node; | |
9d5ab133 | 3239 | struct nes_cm_node *loopback; |
3c2d774c | 3240 | struct nes_cm_core *cm_core; |
615eb715 | 3241 | u8 *start_buff; |
3c2d774c GS |
3242 | |
3243 | atomic_inc(&cm_rejects); | |
615eb715 | 3244 | cm_node = (struct nes_cm_node *)cm_id->provider_data; |
9d5ab133 | 3245 | loopback = cm_node->loopbackpartner; |
3c2d774c | 3246 | cm_core = cm_node->cm_core; |
9d5ab133 | 3247 | cm_node->cm_id = cm_id; |
3c2d774c | 3248 | |
615eb715 | 3249 | if (pdata_len + sizeof(struct ietf_mpa_v2) > MAX_CM_BUFFER) |
9d5ab133 FL |
3250 | return -EINVAL; |
3251 | ||
9d5ab133 FL |
3252 | if (loopback) { |
3253 | memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len); | |
3254 | loopback->mpa_frame.priv_data_len = pdata_len; | |
615eb715 | 3255 | loopback->mpa_frame_size = pdata_len; |
9d5ab133 | 3256 | } else { |
615eb715 TN |
3257 | start_buff = &cm_node->mpa_frame_buf[0] + sizeof(struct ietf_mpa_v2); |
3258 | cm_node->mpa_frame_size = pdata_len; | |
3259 | memcpy(start_buff, pdata, pdata_len); | |
9d5ab133 | 3260 | } |
615eb715 | 3261 | return cm_core->api->reject(cm_core, cm_node); |
3c2d774c GS |
3262 | } |
3263 | ||
3264 | ||
3265 | /** | |
3266 | * nes_connect | |
3267 | * setup and launch cm connect node | |
3268 | */ | |
3269 | int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
3270 | { | |
3271 | struct ib_qp *ibqp; | |
3272 | struct nes_qp *nesqp; | |
3273 | struct nes_vnic *nesvnic; | |
3274 | struct nes_device *nesdev; | |
3275 | struct nes_cm_node *cm_node; | |
3276 | struct nes_cm_info cm_info; | |
53094c38 | 3277 | int apbvt_set = 0; |
3c2d774c GS |
3278 | |
3279 | ibqp = nes_get_qp(cm_id->device, conn_param->qpn); | |
3280 | if (!ibqp) | |
3281 | return -EINVAL; | |
3282 | nesqp = to_nesqp(ibqp); | |
3283 | if (!nesqp) | |
3284 | return -EINVAL; | |
3285 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3286 | if (!nesvnic) | |
3287 | return -EINVAL; | |
615eb715 | 3288 | nesdev = nesvnic->nesdev; |
3c2d774c GS |
3289 | if (!nesdev) |
3290 | return -EINVAL; | |
3291 | ||
c5a7d489 FL |
3292 | if (!(cm_id->local_addr.sin_port) || !(cm_id->remote_addr.sin_port)) |
3293 | return -EINVAL; | |
3294 | ||
6492cdf3 | 3295 | nes_debug(NES_DBG_CM, "QP%u, current IP = 0x%08X, Destination IP = " |
615eb715 TN |
3296 | "0x%08X:0x%04X, local = 0x%08X:0x%04X.\n", nesqp->hwqp.qp_id, |
3297 | ntohl(nesvnic->local_ipaddr), | |
3298 | ntohl(cm_id->remote_addr.sin_addr.s_addr), | |
3299 | ntohs(cm_id->remote_addr.sin_port), | |
3300 | ntohl(cm_id->local_addr.sin_addr.s_addr), | |
3301 | ntohs(cm_id->local_addr.sin_port)); | |
3c2d774c | 3302 | |
6492cdf3 | 3303 | atomic_inc(&cm_connects); |
3c2d774c GS |
3304 | nesqp->active_conn = 1; |
3305 | ||
3c2d774c GS |
3306 | /* cache the cm_id in the qp */ |
3307 | nesqp->cm_id = cm_id; | |
3308 | ||
3309 | cm_id->provider_data = nesqp; | |
3310 | ||
3c2d774c GS |
3311 | nesqp->private_data_len = conn_param->private_data_len; |
3312 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32((u32)conn_param->ord); | |
d3e51328 TN |
3313 | /* space for rdma0 read msg */ |
3314 | if (conn_param->ord == 0) | |
3315 | nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(1); | |
3316 | ||
3c2d774c | 3317 | nes_debug(NES_DBG_CM, "requested ord = 0x%08X.\n", (u32)conn_param->ord); |
6492cdf3 | 3318 | nes_debug(NES_DBG_CM, "mpa private data len =%u\n", |
615eb715 | 3319 | conn_param->private_data_len); |
3c2d774c | 3320 | |
6492cdf3 | 3321 | if (cm_id->local_addr.sin_addr.s_addr != |
615eb715 | 3322 | cm_id->remote_addr.sin_addr.s_addr) { |
3c2d774c | 3323 | nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), |
615eb715 | 3324 | PCI_FUNC(nesdev->pcidev->devfn), NES_MANAGE_APBVT_ADD); |
53094c38 FL |
3325 | apbvt_set = 1; |
3326 | } | |
3c2d774c GS |
3327 | |
3328 | /* set up the connection params for the node */ | |
6492cdf3 FL |
3329 | cm_info.loc_addr = htonl(cm_id->local_addr.sin_addr.s_addr); |
3330 | cm_info.loc_port = htons(cm_id->local_addr.sin_port); | |
3331 | cm_info.rem_addr = htonl(cm_id->remote_addr.sin_addr.s_addr); | |
3332 | cm_info.rem_port = htons(cm_id->remote_addr.sin_port); | |
3c2d774c GS |
3333 | cm_info.cm_id = cm_id; |
3334 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3335 | ||
3336 | cm_id->add_ref(cm_id); | |
3c2d774c GS |
3337 | |
3338 | /* create a connect CM node connection */ | |
6492cdf3 | 3339 | cm_node = g_cm_core->api->connect(g_cm_core, nesvnic, |
615eb715 TN |
3340 | conn_param->private_data_len, (void *)conn_param->private_data, |
3341 | &cm_info); | |
3c2d774c | 3342 | if (!cm_node) { |
53094c38 | 3343 | if (apbvt_set) |
3c2d774c | 3344 | nes_manage_apbvt(nesvnic, ntohs(cm_id->local_addr.sin_port), |
615eb715 TN |
3345 | PCI_FUNC(nesdev->pcidev->devfn), |
3346 | NES_MANAGE_APBVT_DEL); | |
6492cdf3 | 3347 | |
3c2d774c GS |
3348 | cm_id->rem_ref(cm_id); |
3349 | return -ENOMEM; | |
3350 | } | |
3351 | ||
53094c38 | 3352 | cm_node->apbvt_set = apbvt_set; |
3c2d774c | 3353 | nesqp->cm_node = cm_node; |
6492cdf3 | 3354 | cm_node->nesqp = nesqp; |
d7ffd507 | 3355 | nes_add_ref(&nesqp->ibqp); |
3c2d774c GS |
3356 | |
3357 | return 0; | |
3358 | } | |
3359 | ||
3360 | ||
3361 | /** | |
3362 | * nes_create_listen | |
3363 | */ | |
3364 | int nes_create_listen(struct iw_cm_id *cm_id, int backlog) | |
3365 | { | |
3366 | struct nes_vnic *nesvnic; | |
3367 | struct nes_cm_listener *cm_node; | |
3368 | struct nes_cm_info cm_info; | |
3c2d774c GS |
3369 | int err; |
3370 | ||
3c2d774c GS |
3371 | nes_debug(NES_DBG_CM, "cm_id = %p, local port = 0x%04X.\n", |
3372 | cm_id, ntohs(cm_id->local_addr.sin_port)); | |
3373 | ||
3374 | nesvnic = to_nesvnic(cm_id->device); | |
3375 | if (!nesvnic) | |
3376 | return -EINVAL; | |
69d51023 | 3377 | |
3c2d774c GS |
3378 | nes_debug(NES_DBG_CM, "nesvnic=%p, netdev=%p, %s\n", |
3379 | nesvnic, nesvnic->netdev, nesvnic->netdev->name); | |
3380 | ||
3381 | nes_debug(NES_DBG_CM, "nesvnic->local_ipaddr=0x%08x, sin_addr.s_addr=0x%08x\n", | |
3382 | nesvnic->local_ipaddr, cm_id->local_addr.sin_addr.s_addr); | |
3383 | ||
3384 | /* setup listen params in our api call struct */ | |
3385 | cm_info.loc_addr = nesvnic->local_ipaddr; | |
3386 | cm_info.loc_port = cm_id->local_addr.sin_port; | |
3387 | cm_info.backlog = backlog; | |
3388 | cm_info.cm_id = cm_id; | |
3389 | ||
3390 | cm_info.conn_type = NES_CM_IWARP_CONN_TYPE; | |
3391 | ||
3392 | ||
3393 | cm_node = g_cm_core->api->listen(g_cm_core, nesvnic, &cm_info); | |
3394 | if (!cm_node) { | |
6492cdf3 | 3395 | printk(KERN_ERR "%s[%u] Error returned from listen API call\n", |
615eb715 | 3396 | __func__, __LINE__); |
3c2d774c GS |
3397 | return -ENOMEM; |
3398 | } | |
3399 | ||
3400 | cm_id->provider_data = cm_node; | |
3401 | ||
3402 | if (!cm_node->reused_node) { | |
6492cdf3 | 3403 | err = nes_manage_apbvt(nesvnic, |
615eb715 TN |
3404 | ntohs(cm_id->local_addr.sin_port), |
3405 | PCI_FUNC(nesvnic->nesdev->pcidev->devfn), | |
3406 | NES_MANAGE_APBVT_ADD); | |
3c2d774c | 3407 | if (err) { |
6492cdf3 | 3408 | printk(KERN_ERR "nes_manage_apbvt call returned %d.\n", |
615eb715 | 3409 | err); |
3c2d774c GS |
3410 | g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node); |
3411 | return err; | |
3412 | } | |
6e10d2e4 | 3413 | atomic_inc(&cm_listens_created); |
3c2d774c GS |
3414 | } |
3415 | ||
3416 | cm_id->add_ref(cm_id); | |
3417 | cm_id->provider_data = (void *)cm_node; | |
3418 | ||
3419 | ||
3420 | return 0; | |
3421 | } | |
3422 | ||
3423 | ||
3424 | /** | |
3425 | * nes_destroy_listen | |
3426 | */ | |
3427 | int nes_destroy_listen(struct iw_cm_id *cm_id) | |
3428 | { | |
3429 | if (cm_id->provider_data) | |
3430 | g_cm_core->api->stop_listener(g_cm_core, cm_id->provider_data); | |
3431 | else | |
3432 | nes_debug(NES_DBG_CM, "cm_id->provider_data was NULL\n"); | |
3433 | ||
3434 | cm_id->rem_ref(cm_id); | |
3435 | ||
3436 | return 0; | |
3437 | } | |
3438 | ||
3439 | ||
3440 | /** | |
3441 | * nes_cm_recv | |
3442 | */ | |
3443 | int nes_cm_recv(struct sk_buff *skb, struct net_device *netdevice) | |
3444 | { | |
4a14f6a7 | 3445 | int rc = 0; |
615eb715 | 3446 | |
3c2d774c | 3447 | cm_packets_received++; |
615eb715 | 3448 | if ((g_cm_core) && (g_cm_core->api)) |
4a14f6a7 | 3449 | rc = g_cm_core->api->recv_pkt(g_cm_core, netdev_priv(netdevice), skb); |
615eb715 | 3450 | else |
3c2d774c | 3451 | nes_debug(NES_DBG_CM, "Unable to process packet for CM," |
615eb715 | 3452 | " cm is not setup properly.\n"); |
3c2d774c | 3453 | |
4a14f6a7 | 3454 | return rc; |
3c2d774c GS |
3455 | } |
3456 | ||
3457 | ||
3458 | /** | |
3459 | * nes_cm_start | |
3460 | * Start and init a cm core module | |
3461 | */ | |
3462 | int nes_cm_start(void) | |
3463 | { | |
3464 | nes_debug(NES_DBG_CM, "\n"); | |
3465 | /* create the primary CM core, pass this handle to subsequent core inits */ | |
3466 | g_cm_core = nes_cm_alloc_core(); | |
615eb715 | 3467 | if (g_cm_core) |
3c2d774c | 3468 | return 0; |
615eb715 | 3469 | else |
3c2d774c | 3470 | return -ENOMEM; |
3c2d774c GS |
3471 | } |
3472 | ||
3473 | ||
3474 | /** | |
3475 | * nes_cm_stop | |
3476 | * stop and dealloc all cm core instances | |
3477 | */ | |
3478 | int nes_cm_stop(void) | |
3479 | { | |
3480 | g_cm_core->api->destroy_cm_core(g_cm_core); | |
3481 | return 0; | |
3482 | } | |
3483 | ||
3484 | ||
3485 | /** | |
3486 | * cm_event_connected | |
3487 | * handle a connected event, setup QPs and HW | |
3488 | */ | |
1a855fbf | 3489 | static void cm_event_connected(struct nes_cm_event *event) |
3c2d774c | 3490 | { |
3c2d774c GS |
3491 | struct nes_qp *nesqp; |
3492 | struct nes_vnic *nesvnic; | |
3493 | struct nes_device *nesdev; | |
3494 | struct nes_cm_node *cm_node; | |
3495 | struct nes_adapter *nesadapter; | |
3496 | struct ib_qp_attr attr; | |
3497 | struct iw_cm_id *cm_id; | |
3498 | struct iw_cm_event cm_event; | |
3c2d774c | 3499 | struct nes_v4_quad nes_quad; |
30da7cff | 3500 | u32 crc_value; |
3c2d774c GS |
3501 | int ret; |
3502 | ||
3503 | /* get all our handles */ | |
3504 | cm_node = event->cm_node; | |
3505 | cm_id = cm_node->cm_id; | |
3506 | nes_debug(NES_DBG_CM, "cm_event_connected - %p - cm_id = %p\n", cm_node, cm_id); | |
3507 | nesqp = (struct nes_qp *)cm_id->provider_data; | |
3508 | nesvnic = to_nesvnic(nesqp->ibqp.device); | |
3509 | nesdev = nesvnic->nesdev; | |
3510 | nesadapter = nesdev->nesadapter; | |
3511 | ||
615eb715 | 3512 | if (nesqp->destroyed) |
3c2d774c | 3513 | return; |
3c2d774c GS |
3514 | atomic_inc(&cm_connecteds); |
3515 | nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on" | |
615eb715 TN |
3516 | " local port 0x%04X. jiffies = %lu.\n", |
3517 | nesqp->hwqp.qp_id, | |
3518 | ntohl(cm_id->remote_addr.sin_addr.s_addr), | |
3519 | ntohs(cm_id->remote_addr.sin_port), | |
3520 | ntohs(cm_id->local_addr.sin_port), | |
3521 | jiffies); | |
3c2d774c GS |
3522 | |
3523 | nes_cm_init_tsa_conn(nesqp, cm_node); | |
3524 | ||
3525 | /* set the QP tsa context */ | |
6492cdf3 FL |
3526 | nesqp->nesqp_context->tcpPorts[0] = |
3527 | cpu_to_le16(ntohs(cm_id->local_addr.sin_port)); | |
3528 | nesqp->nesqp_context->tcpPorts[1] = | |
3529 | cpu_to_le16(ntohs(cm_id->remote_addr.sin_port)); | |
ef3d0c4a | 3530 | nesqp->nesqp_context->ip0 = |
6492cdf3 | 3531 | cpu_to_le32(ntohl(cm_id->remote_addr.sin_addr.s_addr)); |
3c2d774c GS |
3532 | |
3533 | nesqp->nesqp_context->misc2 |= cpu_to_le32( | |
6492cdf3 FL |
3534 | (u32)PCI_FUNC(nesdev->pcidev->devfn) << |
3535 | NES_QPCONTEXT_MISC2_SRC_IP_SHIFT); | |
3c2d774c | 3536 | nesqp->nesqp_context->arp_index_vlan |= cpu_to_le32( |
6492cdf3 FL |
3537 | nes_arp_table(nesdev, |
3538 | le32_to_cpu(nesqp->nesqp_context->ip0), | |
3c2d774c GS |
3539 | NULL, NES_ARP_RESOLVE) << 16); |
3540 | nesqp->nesqp_context->ts_val_delta = cpu_to_le32( | |
3541 | jiffies - nes_read_indexed(nesdev, NES_IDX_TCP_NOW)); | |
3542 | nesqp->nesqp_context->ird_index = cpu_to_le32(nesqp->hwqp.qp_id); | |
3543 | nesqp->nesqp_context->ird_ord_sizes |= | |
6492cdf3 FL |
3544 | cpu_to_le32((u32)1 << |
3545 | NES_QPCONTEXT_ORDIRD_IWARP_MODE_SHIFT); | |
3c2d774c GS |
3546 | |
3547 | /* Adjust tail for not having a LSMM */ | |
615eb715 | 3548 | /*nesqp->hwqp.sq_tail = 1;*/ |
3c2d774c | 3549 | |
615eb715 | 3550 | build_rdma0_msg(cm_node, &nesqp); |
6492cdf3 | 3551 | |
615eb715 TN |
3552 | nes_write32(nesdev->regs + NES_WQE_ALLOC, |
3553 | (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); | |
3c2d774c GS |
3554 | |
3555 | memset(&nes_quad, 0, sizeof(nes_quad)); | |
3556 | ||
6492cdf3 FL |
3557 | nes_quad.DstIpAdrIndex = |
3558 | cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 24); | |
ef3d0c4a | 3559 | nes_quad.SrcIpadr = cm_id->remote_addr.sin_addr.s_addr; |
3c2d774c GS |
3560 | nes_quad.TcpPorts[0] = cm_id->remote_addr.sin_port; |
3561 | nes_quad.TcpPorts[1] = cm_id->local_addr.sin_port; | |
3562 | ||
3563 | /* Produce hash key */ | |
30da7cff FL |
3564 | crc_value = get_crc_value(&nes_quad); |
3565 | nesqp->hte_index = cpu_to_be32(crc_value ^ 0xffffffff); | |
3c2d774c | 3566 | nes_debug(NES_DBG_CM, "HTE Index = 0x%08X, After CRC = 0x%08X\n", |
615eb715 | 3567 | nesqp->hte_index, nesqp->hte_index & nesadapter->hte_index_mask); |
3c2d774c GS |
3568 | |
3569 | nesqp->hte_index &= nesadapter->hte_index_mask; | |
3570 | nesqp->nesqp_context->hte_index = cpu_to_le32(nesqp->hte_index); | |
3571 | ||
3572 | nesqp->ietf_frame = &cm_node->mpa_frame; | |
615eb715 | 3573 | nesqp->private_data_len = (u8)cm_node->mpa_frame_size; |
3c2d774c GS |
3574 | cm_node->cm_core->api->accelerated(cm_node->cm_core, cm_node); |
3575 | ||
3c2d774c GS |
3576 | /* notify OF layer we successfully created the requested connection */ |
3577 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
d0c49bf3 | 3578 | cm_event.status = 0; |
3c2d774c GS |
3579 | cm_event.provider_data = cm_id->provider_data; |
3580 | cm_event.local_addr.sin_family = AF_INET; | |
3581 | cm_event.local_addr.sin_port = cm_id->local_addr.sin_port; | |
3582 | cm_event.remote_addr = cm_id->remote_addr; | |
3583 | ||
6492cdf3 | 3584 | cm_event.private_data = (void *)event->cm_node->mpa_frame_buf; |
615eb715 TN |
3585 | cm_event.private_data_len = (u8)event->cm_node->mpa_frame_size; |
3586 | cm_event.ird = cm_node->ird_size; | |
3587 | cm_event.ord = cm_node->ord_size; | |
3c2d774c GS |
3588 | |
3589 | cm_event.local_addr.sin_addr.s_addr = event->cm_info.rem_addr; | |
3590 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3591 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3592 | ||
3593 | if (ret) | |
6492cdf3 | 3594 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3595 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 FL |
3596 | attr.qp_state = IB_QPS_RTS; |
3597 | nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); | |
3c2d774c | 3598 | |
6492cdf3 | 3599 | nes_debug(NES_DBG_CM, "Exiting connect thread for QP%u. jiffies = " |
615eb715 | 3600 | "%lu\n", nesqp->hwqp.qp_id, jiffies); |
3c2d774c GS |
3601 | |
3602 | return; | |
3603 | } | |
3604 | ||
3605 | ||
3606 | /** | |
3607 | * cm_event_connect_error | |
3608 | */ | |
1a855fbf | 3609 | static void cm_event_connect_error(struct nes_cm_event *event) |
3c2d774c GS |
3610 | { |
3611 | struct nes_qp *nesqp; | |
3612 | struct iw_cm_id *cm_id; | |
3613 | struct iw_cm_event cm_event; | |
3614 | /* struct nes_cm_info cm_info; */ | |
3615 | int ret; | |
3616 | ||
3617 | if (!event->cm_node) | |
3618 | return; | |
3619 | ||
3620 | cm_id = event->cm_node->cm_id; | |
615eb715 | 3621 | if (!cm_id) |
3c2d774c | 3622 | return; |
3c2d774c GS |
3623 | |
3624 | nes_debug(NES_DBG_CM, "cm_node=%p, cm_id=%p\n", event->cm_node, cm_id); | |
3625 | nesqp = cm_id->provider_data; | |
3626 | ||
615eb715 | 3627 | if (!nesqp) |
3c2d774c | 3628 | return; |
3c2d774c GS |
3629 | |
3630 | /* notify OF layer about this connection error event */ | |
3631 | /* cm_id->rem_ref(cm_id); */ | |
3632 | nesqp->cm_id = NULL; | |
3633 | cm_id->provider_data = NULL; | |
3634 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
c5a7d489 | 3635 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3636 | cm_event.provider_data = cm_id->provider_data; |
3637 | cm_event.local_addr = cm_id->local_addr; | |
3638 | cm_event.remote_addr = cm_id->remote_addr; | |
3639 | cm_event.private_data = NULL; | |
3640 | cm_event.private_data_len = 0; | |
3641 | ||
6492cdf3 | 3642 | nes_debug(NES_DBG_CM, "call CM_EVENT REJECTED, local_addr=%08x, " |
615eb715 TN |
3643 | "remove_addr=%08x\n", cm_event.local_addr.sin_addr.s_addr, |
3644 | cm_event.remote_addr.sin_addr.s_addr); | |
3c2d774c GS |
3645 | |
3646 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3647 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); | |
3648 | if (ret) | |
6492cdf3 | 3649 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, " |
615eb715 | 3650 | "ret=%d\n", __func__, __LINE__, ret); |
6492cdf3 | 3651 | cm_id->rem_ref(cm_id); |
3c2d774c | 3652 | |
6492cdf3 | 3653 | rem_ref_cm_node(event->cm_node->cm_core, event->cm_node); |
3c2d774c GS |
3654 | return; |
3655 | } | |
3656 | ||
3657 | ||
3658 | /** | |
3659 | * cm_event_reset | |
3660 | */ | |
1a855fbf | 3661 | static void cm_event_reset(struct nes_cm_event *event) |
3c2d774c GS |
3662 | { |
3663 | struct nes_qp *nesqp; | |
3664 | struct iw_cm_id *cm_id; | |
3665 | struct iw_cm_event cm_event; | |
3666 | /* struct nes_cm_info cm_info; */ | |
3667 | int ret; | |
3668 | ||
3669 | if (!event->cm_node) | |
3670 | return; | |
3671 | ||
3672 | if (!event->cm_node->cm_id) | |
3673 | return; | |
3674 | ||
3675 | cm_id = event->cm_node->cm_id; | |
3676 | ||
3677 | nes_debug(NES_DBG_CM, "%p - cm_id = %p\n", event->cm_node, cm_id); | |
3678 | nesqp = cm_id->provider_data; | |
f9f3f1e0 FL |
3679 | if (!nesqp) |
3680 | return; | |
3c2d774c GS |
3681 | |
3682 | nesqp->cm_id = NULL; | |
3683 | /* cm_id->provider_data = NULL; */ | |
3684 | cm_event.event = IW_CM_EVENT_DISCONNECT; | |
d0c49bf3 | 3685 | cm_event.status = -ECONNRESET; |
3c2d774c GS |
3686 | cm_event.provider_data = cm_id->provider_data; |
3687 | cm_event.local_addr = cm_id->local_addr; | |
3688 | cm_event.remote_addr = cm_id->remote_addr; | |
3689 | cm_event.private_data = NULL; | |
3690 | cm_event.private_data_len = 0; | |
3691 | ||
183ecfa3 | 3692 | cm_id->add_ref(cm_id); |
f9f3f1e0 | 3693 | ret = cm_id->event_handler(cm_id, &cm_event); |
183ecfa3 FL |
3694 | atomic_inc(&cm_closes); |
3695 | cm_event.event = IW_CM_EVENT_CLOSE; | |
d0c49bf3 | 3696 | cm_event.status = 0; |
183ecfa3 FL |
3697 | cm_event.provider_data = cm_id->provider_data; |
3698 | cm_event.local_addr = cm_id->local_addr; | |
3699 | cm_event.remote_addr = cm_id->remote_addr; | |
3700 | cm_event.private_data = NULL; | |
3701 | cm_event.private_data_len = 0; | |
3702 | nes_debug(NES_DBG_CM, "NODE %p Generating CLOSE\n", event->cm_node); | |
3703 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3704 | ||
3c2d774c GS |
3705 | nes_debug(NES_DBG_CM, "OFA CM event_handler returned, ret=%d\n", ret); |
3706 | ||
3707 | ||
3708 | /* notify OF layer about this connection error event */ | |
3709 | cm_id->rem_ref(cm_id); | |
3710 | ||
3711 | return; | |
3712 | } | |
3713 | ||
3714 | ||
3715 | /** | |
3716 | * cm_event_mpa_req | |
3717 | */ | |
1a855fbf | 3718 | static void cm_event_mpa_req(struct nes_cm_event *event) |
3c2d774c | 3719 | { |
615eb715 | 3720 | struct iw_cm_id *cm_id; |
3c2d774c GS |
3721 | struct iw_cm_event cm_event; |
3722 | int ret; | |
3723 | struct nes_cm_node *cm_node; | |
3724 | ||
3725 | cm_node = event->cm_node; | |
3726 | if (!cm_node) | |
3727 | return; | |
3728 | cm_id = cm_node->cm_id; | |
3729 | ||
3730 | atomic_inc(&cm_connect_reqs); | |
3731 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 3732 | cm_node, cm_id, jiffies); |
3c2d774c GS |
3733 | |
3734 | cm_event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
d0c49bf3 | 3735 | cm_event.status = 0; |
3c2d774c GS |
3736 | cm_event.provider_data = (void *)cm_node; |
3737 | ||
3738 | cm_event.local_addr.sin_family = AF_INET; | |
3739 | cm_event.local_addr.sin_port = htons(event->cm_info.loc_port); | |
3740 | cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
3741 | ||
9d5ab133 FL |
3742 | cm_event.remote_addr.sin_family = AF_INET; |
3743 | cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port); | |
3744 | cm_event.remote_addr.sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
3745 | cm_event.private_data = cm_node->mpa_frame_buf; | |
615eb715 TN |
3746 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
3747 | cm_event.ird = cm_node->ird_size; | |
3748 | cm_event.ord = cm_node->ord_size; | |
9d5ab133 FL |
3749 | |
3750 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3751 | if (ret) | |
3752 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", | |
615eb715 | 3753 | __func__, __LINE__, ret); |
9d5ab133 FL |
3754 | return; |
3755 | } | |
3756 | ||
3757 | ||
3758 | static void cm_event_mpa_reject(struct nes_cm_event *event) | |
3759 | { | |
615eb715 | 3760 | struct iw_cm_id *cm_id; |
9d5ab133 FL |
3761 | struct iw_cm_event cm_event; |
3762 | struct nes_cm_node *cm_node; | |
3763 | int ret; | |
3764 | ||
3765 | cm_node = event->cm_node; | |
3766 | if (!cm_node) | |
3767 | return; | |
3768 | cm_id = cm_node->cm_id; | |
3769 | ||
3770 | atomic_inc(&cm_connect_reqs); | |
3771 | nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n", | |
615eb715 | 3772 | cm_node, cm_id, jiffies); |
9d5ab133 FL |
3773 | |
3774 | cm_event.event = IW_CM_EVENT_CONNECT_REPLY; | |
3775 | cm_event.status = -ECONNREFUSED; | |
3776 | cm_event.provider_data = cm_id->provider_data; | |
3777 | ||
3778 | cm_event.local_addr.sin_family = AF_INET; | |
3779 | cm_event.local_addr.sin_port = htons(event->cm_info.loc_port); | |
3780 | cm_event.local_addr.sin_addr.s_addr = htonl(event->cm_info.loc_addr); | |
3781 | ||
3c2d774c GS |
3782 | cm_event.remote_addr.sin_family = AF_INET; |
3783 | cm_event.remote_addr.sin_port = htons(event->cm_info.rem_port); | |
3784 | cm_event.remote_addr.sin_addr.s_addr = htonl(event->cm_info.rem_addr); | |
3785 | ||
9d5ab133 | 3786 | cm_event.private_data = cm_node->mpa_frame_buf; |
615eb715 | 3787 | cm_event.private_data_len = (u8)cm_node->mpa_frame_size; |
9d5ab133 FL |
3788 | |
3789 | nes_debug(NES_DBG_CM, "call CM_EVENT_MPA_REJECTED, local_addr=%08x, " | |
615eb715 TN |
3790 | "remove_addr=%08x\n", |
3791 | cm_event.local_addr.sin_addr.s_addr, | |
3792 | cm_event.remote_addr.sin_addr.s_addr); | |
3c2d774c GS |
3793 | |
3794 | ret = cm_id->event_handler(cm_id, &cm_event); | |
3795 | if (ret) | |
9d5ab133 | 3796 | printk(KERN_ERR "%s[%u] OFA CM event_handler returned, ret=%d\n", |
615eb715 | 3797 | __func__, __LINE__, ret); |
3c2d774c GS |
3798 | |
3799 | return; | |
3800 | } | |
3801 | ||
3802 | ||
3803 | static void nes_cm_event_handler(struct work_struct *); | |
3804 | ||
3805 | /** | |
3806 | * nes_cm_post_event | |
3807 | * post an event to the cm event handler | |
3808 | */ | |
1a855fbf | 3809 | static int nes_cm_post_event(struct nes_cm_event *event) |
3c2d774c GS |
3810 | { |
3811 | atomic_inc(&event->cm_node->cm_core->events_posted); | |
3812 | add_ref_cm_node(event->cm_node); | |
3813 | event->cm_info.cm_id->add_ref(event->cm_info.cm_id); | |
3814 | INIT_WORK(&event->event_work, nes_cm_event_handler); | |
6492cdf3 | 3815 | nes_debug(NES_DBG_CM, "cm_node=%p queue_work, event=%p\n", |
615eb715 | 3816 | event->cm_node, event); |
3c2d774c GS |
3817 | |
3818 | queue_work(event->cm_node->cm_core->event_wq, &event->event_work); | |
3819 | ||
3820 | nes_debug(NES_DBG_CM, "Exit\n"); | |
3821 | return 0; | |
3822 | } | |
3823 | ||
3824 | ||
3825 | /** | |
3826 | * nes_cm_event_handler | |
3827 | * worker function to handle cm events | |
3828 | * will free instance of nes_cm_event | |
3829 | */ | |
3830 | static void nes_cm_event_handler(struct work_struct *work) | |
3831 | { | |
6492cdf3 | 3832 | struct nes_cm_event *event = container_of(work, struct nes_cm_event, |
615eb715 | 3833 | event_work); |
3c2d774c GS |
3834 | struct nes_cm_core *cm_core; |
3835 | ||
6492cdf3 | 3836 | if ((!event) || (!event->cm_node) || (!event->cm_node->cm_core)) |
3c2d774c | 3837 | return; |
6492cdf3 | 3838 | |
3c2d774c GS |
3839 | cm_core = event->cm_node->cm_core; |
3840 | nes_debug(NES_DBG_CM, "event=%p, event->type=%u, events posted=%u\n", | |
615eb715 | 3841 | event, event->type, atomic_read(&cm_core->events_posted)); |
3c2d774c GS |
3842 | |
3843 | switch (event->type) { | |
6492cdf3 FL |
3844 | case NES_CM_EVENT_MPA_REQ: |
3845 | cm_event_mpa_req(event); | |
3846 | nes_debug(NES_DBG_CM, "cm_node=%p CM Event: MPA REQUEST\n", | |
615eb715 | 3847 | event->cm_node); |
6492cdf3 FL |
3848 | break; |
3849 | case NES_CM_EVENT_RESET: | |
3850 | nes_debug(NES_DBG_CM, "cm_node = %p CM Event: RESET\n", | |
615eb715 | 3851 | event->cm_node); |
6492cdf3 FL |
3852 | cm_event_reset(event); |
3853 | break; | |
3854 | case NES_CM_EVENT_CONNECTED: | |
3855 | if ((!event->cm_node->cm_id) || | |
615eb715 | 3856 | (event->cm_node->state != NES_CM_STATE_TSA)) |
3c2d774c | 3857 | break; |
6492cdf3 FL |
3858 | cm_event_connected(event); |
3859 | nes_debug(NES_DBG_CM, "CM Event: CONNECTED\n"); | |
3860 | break; | |
9d5ab133 FL |
3861 | case NES_CM_EVENT_MPA_REJECT: |
3862 | if ((!event->cm_node->cm_id) || | |
615eb715 | 3863 | (event->cm_node->state == NES_CM_STATE_TSA)) |
9d5ab133 FL |
3864 | break; |
3865 | cm_event_mpa_reject(event); | |
3866 | nes_debug(NES_DBG_CM, "CM Event: REJECT\n"); | |
3867 | break; | |
3868 | ||
6492cdf3 FL |
3869 | case NES_CM_EVENT_ABORTED: |
3870 | if ((!event->cm_node->cm_id) || | |
615eb715 | 3871 | (event->cm_node->state == NES_CM_STATE_TSA)) |
3c2d774c | 3872 | break; |
6492cdf3 FL |
3873 | cm_event_connect_error(event); |
3874 | nes_debug(NES_DBG_CM, "CM Event: ABORTED\n"); | |
3875 | break; | |
3876 | case NES_CM_EVENT_DROPPED_PKT: | |
3877 | nes_debug(NES_DBG_CM, "CM Event: DROPPED PKT\n"); | |
3878 | break; | |
3879 | default: | |
3880 | nes_debug(NES_DBG_CM, "CM Event: UNKNOWN EVENT TYPE\n"); | |
3881 | break; | |
3c2d774c GS |
3882 | } |
3883 | ||
3884 | atomic_dec(&cm_core->events_posted); | |
3885 | event->cm_info.cm_id->rem_ref(event->cm_info.cm_id); | |
3886 | rem_ref_cm_node(cm_core, event->cm_node); | |
3887 | kfree(event); | |
3888 | ||
3889 | return; | |
3890 | } |