Commit | Line | Data |
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85b4aa49 | 1 | /* |
af7f85d9 | 2 | * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved. |
85b4aa49 RL |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | * | |
17 | * Maintained at www.Open-FCoE.org | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
85b4aa49 | 21 | #include <linux/spinlock.h> |
85b4aa49 RL |
22 | #include <linux/netdevice.h> |
23 | #include <linux/etherdevice.h> | |
24 | #include <linux/ethtool.h> | |
25 | #include <linux/if_ether.h> | |
26 | #include <linux/if_vlan.h> | |
85b4aa49 | 27 | #include <linux/crc32.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
85b4aa49 RL |
29 | #include <linux/cpu.h> |
30 | #include <linux/fs.h> | |
31 | #include <linux/sysfs.h> | |
32 | #include <linux/ctype.h> | |
2ca32b48 | 33 | #include <linux/workqueue.h> |
6f6c2aa3 | 34 | #include <net/dcbnl.h> |
35 | #include <net/dcbevent.h> | |
85b4aa49 RL |
36 | #include <scsi/scsi_tcq.h> |
37 | #include <scsi/scsicam.h> | |
38 | #include <scsi/scsi_transport.h> | |
39 | #include <scsi/scsi_transport_fc.h> | |
40 | #include <net/rtnetlink.h> | |
41 | ||
42 | #include <scsi/fc/fc_encaps.h> | |
97c8389d | 43 | #include <scsi/fc/fc_fip.h> |
8d55e507 | 44 | #include <scsi/fc/fc_fcoe.h> |
85b4aa49 RL |
45 | |
46 | #include <scsi/libfc.h> | |
47 | #include <scsi/fc_frame.h> | |
48 | #include <scsi/libfcoe.h> | |
85b4aa49 | 49 | |
fdd78027 | 50 | #include "fcoe.h" |
7f349142 | 51 | |
85b4aa49 RL |
52 | MODULE_AUTHOR("Open-FCoE.org"); |
53 | MODULE_DESCRIPTION("FCoE"); | |
9b34ecff | 54 | MODULE_LICENSE("GPL v2"); |
85b4aa49 | 55 | |
05cc7390 | 56 | /* Performance tuning parameters for fcoe */ |
860eca2b | 57 | static unsigned int fcoe_ddp_min = 4096; |
05cc7390 YZ |
58 | module_param_named(ddp_min, fcoe_ddp_min, uint, S_IRUGO | S_IWUSR); |
59 | MODULE_PARM_DESC(ddp_min, "Minimum I/O size in bytes for " \ | |
60 | "Direct Data Placement (DDP)."); | |
61 | ||
7c9c6841 BVA |
62 | unsigned int fcoe_debug_logging; |
63 | module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR); | |
64 | MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); | |
65 | ||
66 | static DEFINE_MUTEX(fcoe_config_mutex); | |
dfc1d0fe | 67 | |
2ca32b48 TH |
68 | static struct workqueue_struct *fcoe_wq; |
69 | ||
e7a51997 JE |
70 | /* fcoe_percpu_clean completion. Waiter protected by fcoe_create_mutex */ |
71 | static DECLARE_COMPLETION(fcoe_flush_completion); | |
72 | ||
85b4aa49 | 73 | /* fcoe host list */ |
090eb6c4 | 74 | /* must only by accessed under the RTNL mutex */ |
7c9c6841 BVA |
75 | static LIST_HEAD(fcoe_hostlist); |
76 | static DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu); | |
85b4aa49 | 77 | |
dd3fd72e | 78 | /* Function Prototypes */ |
1875f27e | 79 | static int fcoe_reset(struct Scsi_Host *); |
fdd78027 VD |
80 | static int fcoe_xmit(struct fc_lport *, struct fc_frame *); |
81 | static int fcoe_rcv(struct sk_buff *, struct net_device *, | |
82 | struct packet_type *, struct net_device *); | |
1875f27e | 83 | static int fcoe_percpu_receive_thread(void *); |
1875f27e | 84 | static void fcoe_percpu_clean(struct fc_lport *); |
5e4f8fe7 | 85 | static int fcoe_link_speed_update(struct fc_lport *); |
1875f27e | 86 | static int fcoe_link_ok(struct fc_lport *); |
fdd78027 VD |
87 | |
88 | static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *); | |
89 | static int fcoe_hostlist_add(const struct fc_lport *); | |
fdd78027 | 90 | |
85b4aa49 RL |
91 | static int fcoe_device_notification(struct notifier_block *, ulong, void *); |
92 | static void fcoe_dev_setup(void); | |
93 | static void fcoe_dev_cleanup(void); | |
1875f27e RL |
94 | static struct fcoe_interface |
95 | *fcoe_hostlist_lookup_port(const struct net_device *); | |
96 | ||
97 | static int fcoe_fip_recv(struct sk_buff *, struct net_device *, | |
98 | struct packet_type *, struct net_device *); | |
99 | ||
100 | static void fcoe_fip_send(struct fcoe_ctlr *, struct sk_buff *); | |
101 | static void fcoe_update_src_mac(struct fc_lport *, u8 *); | |
102 | static u8 *fcoe_get_src_mac(struct fc_lport *); | |
103 | static void fcoe_destroy_work(struct work_struct *); | |
104 | ||
105 | static int fcoe_ddp_setup(struct fc_lport *, u16, struct scatterlist *, | |
106 | unsigned int); | |
107 | static int fcoe_ddp_done(struct fc_lport *, u16); | |
71f89491 YZ |
108 | static int fcoe_ddp_target(struct fc_lport *, u16, struct scatterlist *, |
109 | unsigned int); | |
1875f27e | 110 | static int fcoe_cpu_callback(struct notifier_block *, unsigned long, void *); |
6f6c2aa3 | 111 | static int fcoe_dcb_app_notification(struct notifier_block *notifier, |
112 | ulong event, void *ptr); | |
1875f27e | 113 | |
78a58246 YZ |
114 | static bool fcoe_match(struct net_device *netdev); |
115 | static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode); | |
116 | static int fcoe_destroy(struct net_device *netdev); | |
117 | static int fcoe_enable(struct net_device *netdev); | |
118 | static int fcoe_disable(struct net_device *netdev); | |
1875f27e | 119 | |
1875f27e RL |
120 | static struct fc_seq *fcoe_elsct_send(struct fc_lport *, |
121 | u32 did, struct fc_frame *, | |
122 | unsigned int op, | |
123 | void (*resp)(struct fc_seq *, | |
124 | struct fc_frame *, | |
125 | void *), | |
126 | void *, u32 timeout); | |
859b7b64 | 127 | static void fcoe_recv_frame(struct sk_buff *skb); |
1875f27e | 128 | |
b84056bf YZ |
129 | static void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *); |
130 | ||
1875f27e | 131 | /* notification function for packets from net device */ |
85b4aa49 RL |
132 | static struct notifier_block fcoe_notifier = { |
133 | .notifier_call = fcoe_device_notification, | |
134 | }; | |
135 | ||
1875f27e RL |
136 | /* notification function for CPU hotplug events */ |
137 | static struct notifier_block fcoe_cpu_notifier = { | |
138 | .notifier_call = fcoe_cpu_callback, | |
139 | }; | |
140 | ||
6f6c2aa3 | 141 | /* notification function for DCB events */ |
142 | static struct notifier_block dcb_notifier = { | |
143 | .notifier_call = fcoe_dcb_app_notification, | |
144 | }; | |
145 | ||
8ca86f84 YZ |
146 | static struct scsi_transport_template *fcoe_nport_scsi_transport; |
147 | static struct scsi_transport_template *fcoe_vport_scsi_transport; | |
7f349142 | 148 | |
1875f27e RL |
149 | static int fcoe_vport_destroy(struct fc_vport *); |
150 | static int fcoe_vport_create(struct fc_vport *, bool disabled); | |
151 | static int fcoe_vport_disable(struct fc_vport *, bool disable); | |
152 | static void fcoe_set_vport_symbolic_name(struct fc_vport *); | |
7d65b0df | 153 | static void fcoe_set_port_id(struct fc_lport *, u32, struct fc_frame *); |
8d55e507 RL |
154 | static void fcoe_ctlr_get_lesb(struct fcoe_ctlr_device *); |
155 | static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *); | |
156 | ||
157 | static struct fcoe_sysfs_function_template fcoe_sysfs_templ = { | |
158 | .get_fcoe_ctlr_mode = fcoe_ctlr_get_fip_mode, | |
159 | .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, | |
160 | .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, | |
161 | .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, | |
162 | .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, | |
163 | .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, | |
164 | .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, | |
165 | ||
166 | .get_fcoe_fcf_selected = fcoe_fcf_get_selected, | |
167 | .get_fcoe_fcf_vlan_id = fcoe_fcf_get_vlan_id, | |
168 | }; | |
1875f27e RL |
169 | |
170 | static struct libfc_function_template fcoe_libfc_fcn_templ = { | |
171 | .frame_send = fcoe_xmit, | |
172 | .ddp_setup = fcoe_ddp_setup, | |
173 | .ddp_done = fcoe_ddp_done, | |
71f89491 | 174 | .ddp_target = fcoe_ddp_target, |
1875f27e | 175 | .elsct_send = fcoe_elsct_send, |
b84056bf | 176 | .get_lesb = fcoe_get_lesb, |
7d65b0df | 177 | .lport_set_port_id = fcoe_set_port_id, |
1875f27e | 178 | }; |
9a05753b | 179 | |
7c9c6841 | 180 | static struct fc_function_template fcoe_nport_fc_functions = { |
7f349142 VD |
181 | .show_host_node_name = 1, |
182 | .show_host_port_name = 1, | |
183 | .show_host_supported_classes = 1, | |
184 | .show_host_supported_fc4s = 1, | |
185 | .show_host_active_fc4s = 1, | |
186 | .show_host_maxframe_size = 1, | |
9f71af2f NP |
187 | .show_host_serial_number = 1, |
188 | .show_host_manufacturer = 1, | |
189 | .show_host_model = 1, | |
190 | .show_host_model_description = 1, | |
191 | .show_host_hardware_version = 1, | |
192 | .show_host_driver_version = 1, | |
193 | .show_host_firmware_version = 1, | |
194 | .show_host_optionrom_version = 1, | |
7f349142 VD |
195 | |
196 | .show_host_port_id = 1, | |
197 | .show_host_supported_speeds = 1, | |
198 | .get_host_speed = fc_get_host_speed, | |
199 | .show_host_speed = 1, | |
200 | .show_host_port_type = 1, | |
201 | .get_host_port_state = fc_get_host_port_state, | |
202 | .show_host_port_state = 1, | |
203 | .show_host_symbolic_name = 1, | |
204 | ||
205 | .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), | |
206 | .show_rport_maxframe_size = 1, | |
207 | .show_rport_supported_classes = 1, | |
208 | ||
209 | .show_host_fabric_name = 1, | |
210 | .show_starget_node_name = 1, | |
211 | .show_starget_port_name = 1, | |
212 | .show_starget_port_id = 1, | |
213 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
214 | .show_rport_dev_loss_tmo = 1, | |
215 | .get_fc_host_stats = fc_get_host_stats, | |
216 | .issue_fc_host_lip = fcoe_reset, | |
217 | ||
218 | .terminate_rport_io = fc_rport_terminate_io, | |
9a05753b CL |
219 | |
220 | .vport_create = fcoe_vport_create, | |
221 | .vport_delete = fcoe_vport_destroy, | |
222 | .vport_disable = fcoe_vport_disable, | |
dc8596d3 | 223 | .set_vport_symbolic_name = fcoe_set_vport_symbolic_name, |
a51ab396 SM |
224 | |
225 | .bsg_request = fc_lport_bsg_request, | |
7f349142 VD |
226 | }; |
227 | ||
7c9c6841 | 228 | static struct fc_function_template fcoe_vport_fc_functions = { |
e9084bb8 CL |
229 | .show_host_node_name = 1, |
230 | .show_host_port_name = 1, | |
231 | .show_host_supported_classes = 1, | |
232 | .show_host_supported_fc4s = 1, | |
233 | .show_host_active_fc4s = 1, | |
234 | .show_host_maxframe_size = 1, | |
7e5adcfb NP |
235 | .show_host_serial_number = 1, |
236 | .show_host_manufacturer = 1, | |
237 | .show_host_model = 1, | |
238 | .show_host_model_description = 1, | |
239 | .show_host_hardware_version = 1, | |
240 | .show_host_driver_version = 1, | |
241 | .show_host_firmware_version = 1, | |
242 | .show_host_optionrom_version = 1, | |
e9084bb8 CL |
243 | |
244 | .show_host_port_id = 1, | |
245 | .show_host_supported_speeds = 1, | |
246 | .get_host_speed = fc_get_host_speed, | |
247 | .show_host_speed = 1, | |
248 | .show_host_port_type = 1, | |
249 | .get_host_port_state = fc_get_host_port_state, | |
250 | .show_host_port_state = 1, | |
251 | .show_host_symbolic_name = 1, | |
252 | ||
253 | .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), | |
254 | .show_rport_maxframe_size = 1, | |
255 | .show_rport_supported_classes = 1, | |
256 | ||
257 | .show_host_fabric_name = 1, | |
258 | .show_starget_node_name = 1, | |
259 | .show_starget_port_name = 1, | |
260 | .show_starget_port_id = 1, | |
261 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
262 | .show_rport_dev_loss_tmo = 1, | |
263 | .get_fc_host_stats = fc_get_host_stats, | |
264 | .issue_fc_host_lip = fcoe_reset, | |
265 | ||
266 | .terminate_rport_io = fc_rport_terminate_io, | |
a51ab396 SM |
267 | |
268 | .bsg_request = fc_lport_bsg_request, | |
e9084bb8 CL |
269 | }; |
270 | ||
7f349142 VD |
271 | static struct scsi_host_template fcoe_shost_template = { |
272 | .module = THIS_MODULE, | |
273 | .name = "FCoE Driver", | |
274 | .proc_name = FCOE_NAME, | |
275 | .queuecommand = fc_queuecommand, | |
276 | .eh_abort_handler = fc_eh_abort, | |
277 | .eh_device_reset_handler = fc_eh_device_reset, | |
278 | .eh_host_reset_handler = fc_eh_host_reset, | |
279 | .slave_alloc = fc_slave_alloc, | |
280 | .change_queue_depth = fc_change_queue_depth, | |
281 | .change_queue_type = fc_change_queue_type, | |
282 | .this_id = -1, | |
14caf44c | 283 | .cmd_per_lun = 3, |
7f349142 VD |
284 | .can_queue = FCOE_MAX_OUTSTANDING_COMMANDS, |
285 | .use_clustering = ENABLE_CLUSTERING, | |
286 | .sg_tablesize = SG_ALL, | |
287 | .max_sectors = 0xffff, | |
288 | }; | |
289 | ||
54b649f8 | 290 | /** |
1875f27e RL |
291 | * fcoe_interface_setup() - Setup a FCoE interface |
292 | * @fcoe: The new FCoE interface | |
293 | * @netdev: The net device that the fcoe interface is on | |
54b649f8 CL |
294 | * |
295 | * Returns : 0 for success | |
2e70e241 | 296 | * Locking: must be called with the RTNL mutex held |
54b649f8 CL |
297 | */ |
298 | static int fcoe_interface_setup(struct fcoe_interface *fcoe, | |
299 | struct net_device *netdev) | |
300 | { | |
619fe4be | 301 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
54b649f8 | 302 | struct netdev_hw_addr *ha; |
5bab87e6 | 303 | struct net_device *real_dev; |
54b649f8 | 304 | u8 flogi_maddr[ETH_ALEN]; |
b7a727f1 | 305 | const struct net_device_ops *ops; |
54b649f8 CL |
306 | |
307 | fcoe->netdev = netdev; | |
308 | ||
b7a727f1 YZ |
309 | /* Let LLD initialize for FCoE */ |
310 | ops = netdev->netdev_ops; | |
311 | if (ops->ndo_fcoe_enable) { | |
312 | if (ops->ndo_fcoe_enable(netdev)) | |
313 | FCOE_NETDEV_DBG(netdev, "Failed to enable FCoE" | |
314 | " specific feature for LLD.\n"); | |
315 | } | |
316 | ||
54b649f8 | 317 | /* Do not support for bonding device */ |
cc8bdf06 | 318 | if (netdev->priv_flags & IFF_BONDING && netdev->flags & IFF_MASTER) { |
59d92516 | 319 | FCOE_NETDEV_DBG(netdev, "Bonded interfaces not supported\n"); |
54b649f8 CL |
320 | return -EOPNOTSUPP; |
321 | } | |
322 | ||
323 | /* look for SAN MAC address, if multiple SAN MACs exist, only | |
324 | * use the first one for SPMA */ | |
5bab87e6 YZ |
325 | real_dev = (netdev->priv_flags & IFF_802_1Q_VLAN) ? |
326 | vlan_dev_real_dev(netdev) : netdev; | |
d1483bb9 | 327 | fcoe->realdev = real_dev; |
54b649f8 | 328 | rcu_read_lock(); |
5bab87e6 | 329 | for_each_dev_addr(real_dev, ha) { |
54b649f8 | 330 | if ((ha->type == NETDEV_HW_ADDR_T_SAN) && |
bf361707 | 331 | (is_valid_ether_addr(ha->addr))) { |
54b649f8 CL |
332 | memcpy(fip->ctl_src_addr, ha->addr, ETH_ALEN); |
333 | fip->spma = 1; | |
334 | break; | |
335 | } | |
336 | } | |
337 | rcu_read_unlock(); | |
338 | ||
339 | /* setup Source Mac Address */ | |
340 | if (!fip->spma) | |
341 | memcpy(fip->ctl_src_addr, netdev->dev_addr, netdev->addr_len); | |
342 | ||
343 | /* | |
344 | * Add FCoE MAC address as second unicast MAC address | |
345 | * or enter promiscuous mode if not capable of listening | |
346 | * for multiple unicast MACs. | |
347 | */ | |
54b649f8 | 348 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 349 | dev_uc_add(netdev, flogi_maddr); |
54b649f8 | 350 | if (fip->spma) |
a748ee24 | 351 | dev_uc_add(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
352 | if (fip->mode == FIP_MODE_VN2VN) { |
353 | dev_mc_add(netdev, FIP_ALL_VN2VN_MACS); | |
354 | dev_mc_add(netdev, FIP_ALL_P2P_MACS); | |
355 | } else | |
356 | dev_mc_add(netdev, FIP_ALL_ENODE_MACS); | |
54b649f8 CL |
357 | |
358 | /* | |
359 | * setup the receive function from ethernet driver | |
360 | * on the ethertype for the given device | |
361 | */ | |
362 | fcoe->fcoe_packet_type.func = fcoe_rcv; | |
363 | fcoe->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); | |
364 | fcoe->fcoe_packet_type.dev = netdev; | |
365 | dev_add_pack(&fcoe->fcoe_packet_type); | |
366 | ||
367 | fcoe->fip_packet_type.func = fcoe_fip_recv; | |
368 | fcoe->fip_packet_type.type = htons(ETH_P_FIP); | |
369 | fcoe->fip_packet_type.dev = netdev; | |
370 | dev_add_pack(&fcoe->fip_packet_type); | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
030f4e00 | 375 | /** |
1875f27e RL |
376 | * fcoe_interface_create() - Create a FCoE interface on a net device |
377 | * @netdev: The net device to create the FCoE interface on | |
1dd454d9 | 378 | * @fip_mode: The mode to use for FIP |
030f4e00 CL |
379 | * |
380 | * Returns: pointer to a struct fcoe_interface or NULL on error | |
381 | */ | |
1dd454d9 JE |
382 | static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev, |
383 | enum fip_state fip_mode) | |
030f4e00 | 384 | { |
8d55e507 | 385 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 386 | struct fcoe_ctlr *ctlr; |
030f4e00 | 387 | struct fcoe_interface *fcoe; |
619fe4be | 388 | int size; |
59d92516 | 389 | int err; |
030f4e00 | 390 | |
7287fb91 RL |
391 | if (!try_module_get(THIS_MODULE)) { |
392 | FCOE_NETDEV_DBG(netdev, | |
393 | "Could not get a reference to the module\n"); | |
394 | fcoe = ERR_PTR(-EBUSY); | |
395 | goto out; | |
396 | } | |
397 | ||
619fe4be | 398 | size = sizeof(struct fcoe_ctlr) + sizeof(struct fcoe_interface); |
8d55e507 RL |
399 | ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &fcoe_sysfs_templ, |
400 | size); | |
401 | if (!ctlr_dev) { | |
402 | FCOE_DBG("Failed to add fcoe_ctlr_device\n"); | |
7287fb91 | 403 | fcoe = ERR_PTR(-ENOMEM); |
6f68794c | 404 | goto out_putmod; |
030f4e00 CL |
405 | } |
406 | ||
8d55e507 RL |
407 | ctlr = fcoe_ctlr_device_priv(ctlr_dev); |
408 | fcoe = fcoe_ctlr_priv(ctlr); | |
409 | ||
2e70e241 | 410 | dev_hold(netdev); |
54b649f8 CL |
411 | |
412 | /* | |
413 | * Initialize FIP. | |
414 | */ | |
619fe4be RL |
415 | fcoe_ctlr_init(ctlr, fip_mode); |
416 | ctlr->send = fcoe_fip_send; | |
417 | ctlr->update_mac = fcoe_update_src_mac; | |
418 | ctlr->get_src_addr = fcoe_get_src_mac; | |
54b649f8 | 419 | |
59d92516 | 420 | err = fcoe_interface_setup(fcoe, netdev); |
421 | if (err) { | |
619fe4be | 422 | fcoe_ctlr_destroy(ctlr); |
8d55e507 | 423 | fcoe_ctlr_device_delete(ctlr_dev); |
59d92516 | 424 | dev_put(netdev); |
7287fb91 | 425 | fcoe = ERR_PTR(err); |
6f68794c | 426 | goto out_putmod; |
59d92516 | 427 | } |
030f4e00 | 428 | |
7287fb91 RL |
429 | goto out; |
430 | ||
6f68794c | 431 | out_putmod: |
7287fb91 RL |
432 | module_put(THIS_MODULE); |
433 | out: | |
030f4e00 CL |
434 | return fcoe; |
435 | } | |
436 | ||
54b649f8 | 437 | /** |
433eba04 | 438 | * fcoe_interface_remove() - remove FCoE interface from netdev |
1875f27e | 439 | * @fcoe: The FCoE interface to be cleaned up |
2e70e241 CL |
440 | * |
441 | * Caller must be holding the RTNL mutex | |
54b649f8 | 442 | */ |
433eba04 | 443 | static void fcoe_interface_remove(struct fcoe_interface *fcoe) |
54b649f8 CL |
444 | { |
445 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 446 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
54b649f8 | 447 | u8 flogi_maddr[ETH_ALEN]; |
b7a727f1 | 448 | const struct net_device_ops *ops; |
54b649f8 CL |
449 | |
450 | /* | |
451 | * Don't listen for Ethernet packets anymore. | |
452 | * synchronize_net() ensures that the packet handlers are not running | |
453 | * on another CPU. dev_remove_pack() would do that, this calls the | |
454 | * unsyncronized version __dev_remove_pack() to avoid multiple delays. | |
455 | */ | |
456 | __dev_remove_pack(&fcoe->fcoe_packet_type); | |
457 | __dev_remove_pack(&fcoe->fip_packet_type); | |
458 | synchronize_net(); | |
459 | ||
54b649f8 | 460 | /* Delete secondary MAC addresses */ |
54b649f8 | 461 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 462 | dev_uc_del(netdev, flogi_maddr); |
54b649f8 | 463 | if (fip->spma) |
a748ee24 | 464 | dev_uc_del(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
465 | if (fip->mode == FIP_MODE_VN2VN) { |
466 | dev_mc_del(netdev, FIP_ALL_VN2VN_MACS); | |
467 | dev_mc_del(netdev, FIP_ALL_P2P_MACS); | |
468 | } else | |
469 | dev_mc_del(netdev, FIP_ALL_ENODE_MACS); | |
b7a727f1 YZ |
470 | |
471 | /* Tell the LLD we are done w/ FCoE */ | |
472 | ops = netdev->netdev_ops; | |
473 | if (ops->ndo_fcoe_disable) { | |
474 | if (ops->ndo_fcoe_disable(netdev)) | |
475 | FCOE_NETDEV_DBG(netdev, "Failed to disable FCoE" | |
476 | " specific feature for LLD.\n"); | |
477 | } | |
433eba04 VD |
478 | fcoe->removed = 1; |
479 | } | |
480 | ||
481 | ||
482 | /** | |
483 | * fcoe_interface_cleanup() - Clean up a FCoE interface | |
484 | * @fcoe: The FCoE interface to be cleaned up | |
485 | */ | |
486 | static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) | |
487 | { | |
488 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 489 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
8d55e507 | 490 | struct fcoe_ctlr_device *ctlr_dev = fcoe_ctlr_to_ctlr_dev(fip); |
b2085a4e | 491 | |
433eba04 VD |
492 | rtnl_lock(); |
493 | if (!fcoe->removed) | |
494 | fcoe_interface_remove(fcoe); | |
848e7d5b RL |
495 | rtnl_unlock(); |
496 | ||
b2085a4e | 497 | /* Release the self-reference taken during fcoe_interface_create() */ |
1a8ef414 RL |
498 | /* tear-down the FCoE controller */ |
499 | fcoe_ctlr_destroy(fip); | |
619fe4be | 500 | scsi_host_put(fip->lp->host); |
8d55e507 | 501 | fcoe_ctlr_device_delete(ctlr_dev); |
1a8ef414 RL |
502 | dev_put(netdev); |
503 | module_put(THIS_MODULE); | |
030f4e00 CL |
504 | } |
505 | ||
ab6b85c1 | 506 | /** |
1875f27e RL |
507 | * fcoe_fip_recv() - Handler for received FIP frames |
508 | * @skb: The receive skb | |
509 | * @netdev: The associated net device | |
510 | * @ptype: The packet_type structure which was used to register this handler | |
511 | * @orig_dev: The original net_device the the skb was received on. | |
512 | * (in case dev is a bond) | |
ab6b85c1 VD |
513 | * |
514 | * Returns: 0 for success | |
515 | */ | |
1875f27e | 516 | static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev, |
ab6b85c1 VD |
517 | struct packet_type *ptype, |
518 | struct net_device *orig_dev) | |
519 | { | |
259ad85d | 520 | struct fcoe_interface *fcoe; |
619fe4be | 521 | struct fcoe_ctlr *ctlr; |
ab6b85c1 | 522 | |
259ad85d | 523 | fcoe = container_of(ptype, struct fcoe_interface, fip_packet_type); |
619fe4be RL |
524 | ctlr = fcoe_to_ctlr(fcoe); |
525 | fcoe_ctlr_recv(ctlr, skb); | |
ab6b85c1 VD |
526 | return 0; |
527 | } | |
528 | ||
980f5156 VD |
529 | /** |
530 | * fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame | |
531 | * @port: The FCoE port | |
532 | * @skb: The FIP/FCoE packet to be sent | |
533 | */ | |
534 | static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb) | |
535 | { | |
536 | if (port->fcoe_pending_queue.qlen) | |
537 | fcoe_check_wait_queue(port->lport, skb); | |
538 | else if (fcoe_start_io(skb)) | |
539 | fcoe_check_wait_queue(port->lport, skb); | |
540 | } | |
541 | ||
ab6b85c1 | 542 | /** |
1875f27e RL |
543 | * fcoe_fip_send() - Send an Ethernet-encapsulated FIP frame |
544 | * @fip: The FCoE controller | |
545 | * @skb: The FIP packet to be sent | |
ab6b85c1 VD |
546 | */ |
547 | static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) | |
548 | { | |
3fe9a0ba | 549 | skb->dev = fcoe_from_ctlr(fip)->netdev; |
980f5156 | 550 | fcoe_port_send(lport_priv(fip->lp), skb); |
ab6b85c1 VD |
551 | } |
552 | ||
553 | /** | |
1875f27e RL |
554 | * fcoe_update_src_mac() - Update the Ethernet MAC filters |
555 | * @lport: The local port to update the source MAC on | |
556 | * @addr: Unicast MAC address to add | |
ab6b85c1 VD |
557 | * |
558 | * Remove any previously-set unicast MAC filter. | |
559 | * Add secondary FCoE MAC address filter for our OUI. | |
560 | */ | |
11b56188 | 561 | static void fcoe_update_src_mac(struct fc_lport *lport, u8 *addr) |
ab6b85c1 | 562 | { |
11b56188 | 563 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 564 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 565 | |
11b56188 | 566 | if (!is_zero_ether_addr(port->data_src_addr)) |
a748ee24 | 567 | dev_uc_del(fcoe->netdev, port->data_src_addr); |
11b56188 | 568 | if (!is_zero_ether_addr(addr)) |
a748ee24 | 569 | dev_uc_add(fcoe->netdev, addr); |
11b56188 | 570 | memcpy(port->data_src_addr, addr, ETH_ALEN); |
ab6b85c1 VD |
571 | } |
572 | ||
11b56188 CL |
573 | /** |
574 | * fcoe_get_src_mac() - return the Ethernet source address for an lport | |
575 | * @lport: libfc lport | |
576 | */ | |
577 | static u8 *fcoe_get_src_mac(struct fc_lport *lport) | |
578 | { | |
579 | struct fcoe_port *port = lport_priv(lport); | |
580 | ||
581 | return port->data_src_addr; | |
582 | } | |
583 | ||
7f349142 | 584 | /** |
1875f27e RL |
585 | * fcoe_lport_config() - Set up a local port |
586 | * @lport: The local port to be setup | |
7f349142 VD |
587 | * |
588 | * Returns: 0 for success | |
589 | */ | |
1875f27e | 590 | static int fcoe_lport_config(struct fc_lport *lport) |
7f349142 | 591 | { |
1875f27e RL |
592 | lport->link_up = 0; |
593 | lport->qfull = 0; | |
594 | lport->max_retry_count = 3; | |
595 | lport->max_rport_retry_count = 3; | |
596 | lport->e_d_tov = 2 * 1000; /* FC-FS default */ | |
597 | lport->r_a_tov = 2 * 2 * 1000; | |
598 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | | |
599 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
600 | lport->does_npiv = 1; | |
601 | ||
602 | fc_lport_init_stats(lport); | |
7f349142 VD |
603 | |
604 | /* lport fc_lport related configuration */ | |
1875f27e | 605 | fc_lport_config(lport); |
7f349142 VD |
606 | |
607 | /* offload related configuration */ | |
1875f27e RL |
608 | lport->crc_offload = 0; |
609 | lport->seq_offload = 0; | |
610 | lport->lro_enabled = 0; | |
611 | lport->lro_xid = 0; | |
612 | lport->lso_max = 0; | |
7f349142 VD |
613 | |
614 | return 0; | |
615 | } | |
616 | ||
54a5b21d YZ |
617 | /** |
618 | * fcoe_netdev_features_change - Updates the lport's offload flags based | |
619 | * on the LLD netdev's FCoE feature flags | |
620 | */ | |
621 | static void fcoe_netdev_features_change(struct fc_lport *lport, | |
622 | struct net_device *netdev) | |
623 | { | |
624 | mutex_lock(&lport->lp_mutex); | |
625 | ||
626 | if (netdev->features & NETIF_F_SG) | |
627 | lport->sg_supp = 1; | |
628 | else | |
629 | lport->sg_supp = 0; | |
630 | ||
631 | if (netdev->features & NETIF_F_FCOE_CRC) { | |
632 | lport->crc_offload = 1; | |
633 | FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n"); | |
634 | } else { | |
635 | lport->crc_offload = 0; | |
636 | } | |
637 | ||
638 | if (netdev->features & NETIF_F_FSO) { | |
639 | lport->seq_offload = 1; | |
640 | lport->lso_max = netdev->gso_max_size; | |
641 | FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n", | |
642 | lport->lso_max); | |
643 | } else { | |
644 | lport->seq_offload = 0; | |
645 | lport->lso_max = 0; | |
646 | } | |
647 | ||
648 | if (netdev->fcoe_ddp_xid) { | |
649 | lport->lro_enabled = 1; | |
650 | lport->lro_xid = netdev->fcoe_ddp_xid; | |
651 | FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n", | |
652 | lport->lro_xid); | |
653 | } else { | |
654 | lport->lro_enabled = 0; | |
655 | lport->lro_xid = 0; | |
656 | } | |
657 | ||
658 | mutex_unlock(&lport->lp_mutex); | |
659 | } | |
660 | ||
7f349142 | 661 | /** |
1875f27e RL |
662 | * fcoe_netdev_config() - Set up net devive for SW FCoE |
663 | * @lport: The local port that is associated with the net device | |
664 | * @netdev: The associated net device | |
7f349142 | 665 | * |
1875f27e | 666 | * Must be called after fcoe_lport_config() as it will use local port mutex |
7f349142 | 667 | * |
1875f27e | 668 | * Returns: 0 for success |
7f349142 | 669 | */ |
1875f27e | 670 | static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev) |
7f349142 VD |
671 | { |
672 | u32 mfs; | |
673 | u64 wwnn, wwpn; | |
25024989 | 674 | struct fcoe_interface *fcoe; |
619fe4be | 675 | struct fcoe_ctlr *ctlr; |
014f5c3f | 676 | struct fcoe_port *port; |
7f349142 VD |
677 | |
678 | /* Setup lport private data to point to fcoe softc */ | |
1875f27e | 679 | port = lport_priv(lport); |
8597ae8b | 680 | fcoe = port->priv; |
619fe4be | 681 | ctlr = fcoe_to_ctlr(fcoe); |
7f349142 VD |
682 | |
683 | /* | |
684 | * Determine max frame size based on underlying device and optional | |
685 | * user-configured limit. If the MFS is too low, fcoe_link_ok() | |
686 | * will return 0, so do this first. | |
687 | */ | |
7221d7e5 YZ |
688 | mfs = netdev->mtu; |
689 | if (netdev->features & NETIF_F_FCOE_MTU) { | |
690 | mfs = FCOE_MTU; | |
691 | FCOE_NETDEV_DBG(netdev, "Supports FCOE_MTU of %d bytes\n", mfs); | |
692 | } | |
693 | mfs -= (sizeof(struct fcoe_hdr) + sizeof(struct fcoe_crc_eof)); | |
1875f27e | 694 | if (fc_set_mfs(lport, mfs)) |
7f349142 VD |
695 | return -EINVAL; |
696 | ||
7f349142 | 697 | /* offload features support */ |
54a5b21d | 698 | fcoe_netdev_features_change(lport, netdev); |
7f349142 | 699 | |
014f5c3f CL |
700 | skb_queue_head_init(&port->fcoe_pending_queue); |
701 | port->fcoe_pending_queue_active = 0; | |
1875f27e | 702 | setup_timer(&port->timer, fcoe_queue_timer, (unsigned long)lport); |
7f349142 | 703 | |
5e4f8fe7 RL |
704 | fcoe_link_speed_update(lport); |
705 | ||
1875f27e | 706 | if (!lport->vport) { |
dcece412 | 707 | if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) |
619fe4be | 708 | wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 1, 0); |
1875f27e | 709 | fc_set_wwnn(lport, wwnn); |
dcece412 | 710 | if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) |
619fe4be | 711 | wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, |
cf4aebca | 712 | 2, 0); |
1875f27e | 713 | fc_set_wwpn(lport, wwpn); |
9a05753b | 714 | } |
7f349142 | 715 | |
7f349142 VD |
716 | return 0; |
717 | } | |
718 | ||
719 | /** | |
1875f27e RL |
720 | * fcoe_shost_config() - Set up the SCSI host associated with a local port |
721 | * @lport: The local port | |
1875f27e | 722 | * @dev: The device associated with the SCSI host |
7f349142 VD |
723 | * |
724 | * Must be called after fcoe_lport_config() and fcoe_netdev_config() | |
725 | * | |
1875f27e | 726 | * Returns: 0 for success |
7f349142 | 727 | */ |
8ba00a4b | 728 | static int fcoe_shost_config(struct fc_lport *lport, struct device *dev) |
7f349142 VD |
729 | { |
730 | int rc = 0; | |
731 | ||
732 | /* lport scsi host config */ | |
1875f27e RL |
733 | lport->host->max_lun = FCOE_MAX_LUN; |
734 | lport->host->max_id = FCOE_MAX_FCP_TARGET; | |
735 | lport->host->max_channel = 0; | |
da87bfab VD |
736 | lport->host->max_cmd_len = FCOE_MAX_CMD_LEN; |
737 | ||
1875f27e | 738 | if (lport->vport) |
8ca86f84 | 739 | lport->host->transportt = fcoe_vport_scsi_transport; |
e9084bb8 | 740 | else |
8ca86f84 | 741 | lport->host->transportt = fcoe_nport_scsi_transport; |
7f349142 VD |
742 | |
743 | /* add the new host to the SCSI-ml */ | |
1875f27e | 744 | rc = scsi_add_host(lport->host, dev); |
7f349142 | 745 | if (rc) { |
1875f27e | 746 | FCOE_NETDEV_DBG(fcoe_netdev(lport), "fcoe_shost_config: " |
d5488eb9 | 747 | "error on scsi_add_host\n"); |
7f349142 VD |
748 | return rc; |
749 | } | |
9a05753b | 750 | |
1875f27e | 751 | if (!lport->vport) |
4be929be | 752 | fc_host_max_npiv_vports(lport->host) = USHRT_MAX; |
9a05753b | 753 | |
1875f27e | 754 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, |
5baa17c3 | 755 | "%s v%s over %s", FCOE_NAME, FCOE_VERSION, |
1875f27e | 756 | fcoe_netdev(lport)->name); |
7f349142 VD |
757 | |
758 | return 0; | |
759 | } | |
760 | ||
6fef3902 NP |
761 | |
762 | /** | |
763 | * fcoe_fdmi_info() - Get FDMI related info from net devive for SW FCoE | |
764 | * @lport: The local port that is associated with the net device | |
765 | * @netdev: The associated net device | |
766 | * | |
767 | * Must be called after fcoe_shost_config() as it will use local port mutex | |
768 | * | |
769 | */ | |
770 | static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) | |
771 | { | |
772 | struct fcoe_interface *fcoe; | |
773 | struct fcoe_port *port; | |
774 | struct net_device *realdev; | |
775 | int rc; | |
776 | struct netdev_fcoe_hbainfo fdmi; | |
777 | ||
778 | port = lport_priv(lport); | |
779 | fcoe = port->priv; | |
780 | realdev = fcoe->realdev; | |
781 | ||
782 | if (!realdev) | |
783 | return; | |
784 | ||
785 | /* No FDMI state m/c for NPIV ports */ | |
786 | if (lport->vport) | |
787 | return; | |
788 | ||
789 | if (realdev->netdev_ops->ndo_fcoe_get_hbainfo) { | |
790 | memset(&fdmi, 0, sizeof(fdmi)); | |
791 | rc = realdev->netdev_ops->ndo_fcoe_get_hbainfo(realdev, | |
792 | &fdmi); | |
793 | if (rc) { | |
794 | printk(KERN_INFO "fcoe: Failed to retrieve FDMI " | |
795 | "information from netdev.\n"); | |
796 | return; | |
797 | } | |
798 | ||
799 | snprintf(fc_host_serial_number(lport->host), | |
800 | FC_SERIAL_NUMBER_SIZE, | |
801 | "%s", | |
802 | fdmi.serial_number); | |
803 | snprintf(fc_host_manufacturer(lport->host), | |
804 | FC_SERIAL_NUMBER_SIZE, | |
805 | "%s", | |
806 | fdmi.manufacturer); | |
807 | snprintf(fc_host_model(lport->host), | |
808 | FC_SYMBOLIC_NAME_SIZE, | |
809 | "%s", | |
810 | fdmi.model); | |
811 | snprintf(fc_host_model_description(lport->host), | |
812 | FC_SYMBOLIC_NAME_SIZE, | |
813 | "%s", | |
814 | fdmi.model_description); | |
815 | snprintf(fc_host_hardware_version(lport->host), | |
816 | FC_VERSION_STRING_SIZE, | |
817 | "%s", | |
818 | fdmi.hardware_version); | |
819 | snprintf(fc_host_driver_version(lport->host), | |
820 | FC_VERSION_STRING_SIZE, | |
821 | "%s", | |
822 | fdmi.driver_version); | |
823 | snprintf(fc_host_optionrom_version(lport->host), | |
824 | FC_VERSION_STRING_SIZE, | |
825 | "%s", | |
826 | fdmi.optionrom_version); | |
827 | snprintf(fc_host_firmware_version(lport->host), | |
828 | FC_VERSION_STRING_SIZE, | |
829 | "%s", | |
830 | fdmi.firmware_version); | |
831 | ||
832 | /* Enable FDMI lport states */ | |
833 | lport->fdmi_enabled = 1; | |
834 | } else { | |
835 | lport->fdmi_enabled = 0; | |
836 | printk(KERN_INFO "fcoe: No FDMI support.\n"); | |
837 | } | |
838 | } | |
839 | ||
1875f27e RL |
840 | /** |
841 | * fcoe_oem_match() - The match routine for the offloaded exchange manager | |
842 | * @fp: The I/O frame | |
d7179680 | 843 | * |
1875f27e RL |
844 | * This routine will be associated with an exchange manager (EM). When |
845 | * the libfc exchange handling code is looking for an EM to use it will | |
846 | * call this routine and pass it the frame that it wishes to send. This | |
847 | * routine will return True if the associated EM is to be used and False | |
848 | * if the echange code should continue looking for an EM. | |
849 | * | |
850 | * The offload EM that this routine is associated with will handle any | |
851 | * packets that are for SCSI read requests. | |
852 | * | |
1ff9918b KP |
853 | * This has been enhanced to work when FCoE stack is operating in target |
854 | * mode. | |
855 | * | |
1875f27e | 856 | * Returns: True for read types I/O, otherwise returns false. |
d7179680 | 857 | */ |
7c9c6841 | 858 | static bool fcoe_oem_match(struct fc_frame *fp) |
d7179680 | 859 | { |
1ff9918b KP |
860 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
861 | struct fcp_cmnd *fcp; | |
862 | ||
863 | if (fc_fcp_is_read(fr_fsp(fp)) && | |
864 | (fr_fsp(fp)->data_len > fcoe_ddp_min)) | |
865 | return true; | |
a762dce4 YZ |
866 | else if ((fr_fsp(fp) == NULL) && |
867 | (fh->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD) && | |
868 | (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN)) { | |
1ff9918b | 869 | fcp = fc_frame_payload_get(fp, sizeof(*fcp)); |
a762dce4 YZ |
870 | if ((fcp->fc_flags & FCP_CFL_WRDATA) && |
871 | (ntohl(fcp->fc_dl) > fcoe_ddp_min)) | |
1ff9918b KP |
872 | return true; |
873 | } | |
874 | return false; | |
d7179680 VD |
875 | } |
876 | ||
7f349142 | 877 | /** |
1875f27e RL |
878 | * fcoe_em_config() - Allocate and configure an exchange manager |
879 | * @lport: The local port that the new EM will be associated with | |
7f349142 | 880 | * |
1875f27e | 881 | * Returns: 0 on success |
7f349142 | 882 | */ |
1875f27e | 883 | static inline int fcoe_em_config(struct fc_lport *lport) |
7f349142 | 884 | { |
1875f27e | 885 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 886 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 887 | struct fcoe_interface *oldfcoe = NULL; |
1d1b88dc | 888 | struct net_device *old_real_dev, *cur_real_dev; |
d7179680 VD |
889 | u16 min_xid = FCOE_MIN_XID; |
890 | u16 max_xid = FCOE_MAX_XID; | |
891 | ||
892 | /* | |
893 | * Check if need to allocate an em instance for | |
894 | * offload exchange ids to be shared across all VN_PORTs/lport. | |
895 | */ | |
1875f27e RL |
896 | if (!lport->lro_enabled || !lport->lro_xid || |
897 | (lport->lro_xid >= max_xid)) { | |
898 | lport->lro_xid = 0; | |
d7179680 VD |
899 | goto skip_oem; |
900 | } | |
901 | ||
902 | /* | |
903 | * Reuse existing offload em instance in case | |
1d1b88dc | 904 | * it is already allocated on real eth device |
d7179680 | 905 | */ |
25024989 CL |
906 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN) |
907 | cur_real_dev = vlan_dev_real_dev(fcoe->netdev); | |
1d1b88dc | 908 | else |
25024989 | 909 | cur_real_dev = fcoe->netdev; |
1d1b88dc | 910 | |
25024989 | 911 | list_for_each_entry(oldfcoe, &fcoe_hostlist, list) { |
25024989 CL |
912 | if (oldfcoe->netdev->priv_flags & IFF_802_1Q_VLAN) |
913 | old_real_dev = vlan_dev_real_dev(oldfcoe->netdev); | |
1d1b88dc | 914 | else |
25024989 | 915 | old_real_dev = oldfcoe->netdev; |
1d1b88dc VD |
916 | |
917 | if (cur_real_dev == old_real_dev) { | |
991cbb60 | 918 | fcoe->oem = oldfcoe->oem; |
d7179680 VD |
919 | break; |
920 | } | |
921 | } | |
922 | ||
991cbb60 | 923 | if (fcoe->oem) { |
1875f27e | 924 | if (!fc_exch_mgr_add(lport, fcoe->oem, fcoe_oem_match)) { |
d7179680 VD |
925 | printk(KERN_ERR "fcoe_em_config: failed to add " |
926 | "offload em:%p on interface:%s\n", | |
991cbb60 | 927 | fcoe->oem, fcoe->netdev->name); |
d7179680 VD |
928 | return -ENOMEM; |
929 | } | |
930 | } else { | |
1875f27e RL |
931 | fcoe->oem = fc_exch_mgr_alloc(lport, FC_CLASS_3, |
932 | FCOE_MIN_XID, lport->lro_xid, | |
933 | fcoe_oem_match); | |
991cbb60 | 934 | if (!fcoe->oem) { |
d7179680 VD |
935 | printk(KERN_ERR "fcoe_em_config: failed to allocate " |
936 | "em for offload exches on interface:%s\n", | |
25024989 | 937 | fcoe->netdev->name); |
d7179680 VD |
938 | return -ENOMEM; |
939 | } | |
940 | } | |
941 | ||
942 | /* | |
943 | * Exclude offload EM xid range from next EM xid range. | |
944 | */ | |
1875f27e | 945 | min_xid += lport->lro_xid + 1; |
d7179680 VD |
946 | |
947 | skip_oem: | |
1875f27e | 948 | if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, min_xid, max_xid, NULL)) { |
d7179680 | 949 | printk(KERN_ERR "fcoe_em_config: failed to " |
25024989 | 950 | "allocate em on interface %s\n", fcoe->netdev->name); |
7f349142 | 951 | return -ENOMEM; |
d7179680 | 952 | } |
7f349142 VD |
953 | |
954 | return 0; | |
955 | } | |
956 | ||
957 | /** | |
1875f27e RL |
958 | * fcoe_if_destroy() - Tear down a SW FCoE instance |
959 | * @lport: The local port to be destroyed | |
34ce27bc | 960 | * |
7f349142 | 961 | */ |
af7f85d9 | 962 | static void fcoe_if_destroy(struct fc_lport *lport) |
7f349142 | 963 | { |
b2085a4e NP |
964 | struct fcoe_port *port = lport_priv(lport); |
965 | struct fcoe_interface *fcoe = port->priv; | |
966 | struct net_device *netdev = fcoe->netdev; | |
967 | ||
968 | FCOE_NETDEV_DBG(netdev, "Destroying interface\n"); | |
969 | ||
970 | /* Logout of the fabric */ | |
971 | fc_fabric_logoff(lport); | |
972 | ||
973 | /* Cleanup the fc_lport */ | |
974 | fc_lport_destroy(lport); | |
975 | ||
976 | /* Stop the transmit retry timer */ | |
977 | del_timer_sync(&port->timer); | |
978 | ||
979 | /* Free existing transmit skbs */ | |
980 | fcoe_clean_pending_queue(lport); | |
981 | ||
982 | rtnl_lock(); | |
983 | if (!is_zero_ether_addr(port->data_src_addr)) | |
984 | dev_uc_del(netdev, port->data_src_addr); | |
433eba04 VD |
985 | if (lport->vport) |
986 | synchronize_net(); | |
987 | else | |
988 | fcoe_interface_remove(fcoe); | |
b2085a4e NP |
989 | rtnl_unlock(); |
990 | ||
f161fb72 | 991 | /* Free queued packets for the per-CPU receive threads */ |
af7f85d9 | 992 | fcoe_percpu_clean(lport); |
f161fb72 | 993 | |
7f349142 | 994 | /* Detach from the scsi-ml */ |
af7f85d9 CL |
995 | fc_remove_host(lport->host); |
996 | scsi_remove_host(lport->host); | |
7f349142 | 997 | |
80e736f8 YZ |
998 | /* Destroy lport scsi_priv */ |
999 | fc_fcp_destroy(lport); | |
1000 | ||
7f349142 | 1001 | /* There are no more rports or I/O, free the EM */ |
af7f85d9 | 1002 | fc_exch_mgr_free(lport); |
7f349142 | 1003 | |
7f349142 | 1004 | /* Free memory used by statistical counters */ |
af7f85d9 | 1005 | fc_lport_free_stats(lport); |
7f349142 | 1006 | |
3cab4468 VD |
1007 | /* |
1008 | * Release the Scsi_Host for vport but hold on to | |
1009 | * master lport until it fcoe interface fully cleaned-up. | |
1010 | */ | |
1011 | if (lport->vport) | |
1012 | scsi_host_put(lport->host); | |
7f349142 VD |
1013 | } |
1014 | ||
1875f27e RL |
1015 | /** |
1016 | * fcoe_ddp_setup() - Call a LLD's ddp_setup through the net device | |
1017 | * @lport: The local port to setup DDP for | |
1018 | * @xid: The exchange ID for this DDP transfer | |
1019 | * @sgl: The scatterlist describing this transfer | |
1020 | * @sgc: The number of sg items | |
7f349142 | 1021 | * |
1875f27e | 1022 | * Returns: 0 if the DDP context was not configured |
7f349142 | 1023 | */ |
1875f27e RL |
1024 | static int fcoe_ddp_setup(struct fc_lport *lport, u16 xid, |
1025 | struct scatterlist *sgl, unsigned int sgc) | |
7f349142 | 1026 | { |
1875f27e | 1027 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1028 | |
1875f27e RL |
1029 | if (netdev->netdev_ops->ndo_fcoe_ddp_setup) |
1030 | return netdev->netdev_ops->ndo_fcoe_ddp_setup(netdev, | |
1031 | xid, sgl, | |
1032 | sgc); | |
7f349142 VD |
1033 | |
1034 | return 0; | |
1035 | } | |
1036 | ||
71f89491 YZ |
1037 | /** |
1038 | * fcoe_ddp_target() - Call a LLD's ddp_target through the net device | |
1039 | * @lport: The local port to setup DDP for | |
1040 | * @xid: The exchange ID for this DDP transfer | |
1041 | * @sgl: The scatterlist describing this transfer | |
1042 | * @sgc: The number of sg items | |
1043 | * | |
1044 | * Returns: 0 if the DDP context was not configured | |
1045 | */ | |
1046 | static int fcoe_ddp_target(struct fc_lport *lport, u16 xid, | |
1047 | struct scatterlist *sgl, unsigned int sgc) | |
1048 | { | |
1049 | struct net_device *netdev = fcoe_netdev(lport); | |
1050 | ||
1051 | if (netdev->netdev_ops->ndo_fcoe_ddp_target) | |
1052 | return netdev->netdev_ops->ndo_fcoe_ddp_target(netdev, xid, | |
1053 | sgl, sgc); | |
1054 | ||
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | ||
1875f27e RL |
1059 | /** |
1060 | * fcoe_ddp_done() - Call a LLD's ddp_done through the net device | |
1061 | * @lport: The local port to complete DDP on | |
1062 | * @xid: The exchange ID for this DDP transfer | |
7f349142 | 1063 | * |
1875f27e | 1064 | * Returns: the length of data that have been completed by DDP |
7f349142 | 1065 | */ |
1875f27e | 1066 | static int fcoe_ddp_done(struct fc_lport *lport, u16 xid) |
7f349142 | 1067 | { |
1875f27e | 1068 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1069 | |
1875f27e RL |
1070 | if (netdev->netdev_ops->ndo_fcoe_ddp_done) |
1071 | return netdev->netdev_ops->ndo_fcoe_ddp_done(netdev, xid); | |
7f349142 VD |
1072 | return 0; |
1073 | } | |
1074 | ||
7f349142 | 1075 | /** |
1875f27e RL |
1076 | * fcoe_if_create() - Create a FCoE instance on an interface |
1077 | * @fcoe: The FCoE interface to create a local port on | |
1078 | * @parent: The device pointer to be the parent in sysfs for the SCSI host | |
1079 | * @npiv: Indicates if the port is a vport or not | |
7f349142 | 1080 | * |
1875f27e | 1081 | * Creates a fc_lport instance and a Scsi_Host instance and configure them. |
7f349142 | 1082 | * |
1875f27e | 1083 | * Returns: The allocated fc_lport or an error pointer |
7f349142 | 1084 | */ |
030f4e00 | 1085 | static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, |
9a05753b | 1086 | struct device *parent, int npiv) |
7f349142 | 1087 | { |
619fe4be | 1088 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
1875f27e | 1089 | struct net_device *netdev = fcoe->netdev; |
72fa396b | 1090 | struct fc_lport *lport, *n_port; |
014f5c3f | 1091 | struct fcoe_port *port; |
72fa396b | 1092 | struct Scsi_Host *shost; |
1875f27e | 1093 | int rc; |
9a05753b CL |
1094 | /* |
1095 | * parent is only a vport if npiv is 1, | |
1096 | * but we'll only use vport in that case so go ahead and set it | |
1097 | */ | |
1098 | struct fc_vport *vport = dev_to_vport(parent); | |
7f349142 | 1099 | |
d5488eb9 | 1100 | FCOE_NETDEV_DBG(netdev, "Create Interface\n"); |
7f349142 | 1101 | |
72fa396b VD |
1102 | if (!npiv) |
1103 | lport = libfc_host_alloc(&fcoe_shost_template, sizeof(*port)); | |
1104 | else | |
1105 | lport = libfc_vport_create(vport, sizeof(*port)); | |
1106 | ||
86221969 | 1107 | if (!lport) { |
d5488eb9 | 1108 | FCOE_NETDEV_DBG(netdev, "Could not allocate host structure\n"); |
af7f85d9 | 1109 | rc = -ENOMEM; |
030f4e00 | 1110 | goto out; |
7f349142 | 1111 | } |
014f5c3f | 1112 | port = lport_priv(lport); |
2e70e241 | 1113 | port->lport = lport; |
8597ae8b BPG |
1114 | port->priv = fcoe; |
1115 | port->max_queue_depth = FCOE_MAX_QUEUE_DEPTH; | |
1116 | port->min_queue_depth = FCOE_MIN_QUEUE_DEPTH; | |
2e70e241 | 1117 | INIT_WORK(&port->destroy_work, fcoe_destroy_work); |
7f349142 | 1118 | |
1875f27e | 1119 | /* configure a fc_lport including the exchange manager */ |
af7f85d9 | 1120 | rc = fcoe_lport_config(lport); |
7f349142 | 1121 | if (rc) { |
d5488eb9 RL |
1122 | FCOE_NETDEV_DBG(netdev, "Could not configure lport for the " |
1123 | "interface\n"); | |
7f349142 VD |
1124 | goto out_host_put; |
1125 | } | |
1126 | ||
9a05753b | 1127 | if (npiv) { |
9f8f3aa6 CL |
1128 | FCOE_NETDEV_DBG(netdev, "Setting vport names, " |
1129 | "%16.16llx %16.16llx\n", | |
1875f27e | 1130 | vport->node_name, vport->port_name); |
9a05753b CL |
1131 | fc_set_wwnn(lport, vport->node_name); |
1132 | fc_set_wwpn(lport, vport->port_name); | |
1133 | } | |
1134 | ||
ab6b85c1 | 1135 | /* configure lport network properties */ |
af7f85d9 | 1136 | rc = fcoe_netdev_config(lport, netdev); |
ab6b85c1 | 1137 | if (rc) { |
d5488eb9 RL |
1138 | FCOE_NETDEV_DBG(netdev, "Could not configure netdev for the " |
1139 | "interface\n"); | |
54b649f8 | 1140 | goto out_lp_destroy; |
ab6b85c1 | 1141 | } |
97c8389d | 1142 | |
7f349142 | 1143 | /* configure lport scsi host properties */ |
8ba00a4b | 1144 | rc = fcoe_shost_config(lport, parent); |
7f349142 | 1145 | if (rc) { |
d5488eb9 RL |
1146 | FCOE_NETDEV_DBG(netdev, "Could not configure shost for the " |
1147 | "interface\n"); | |
54b649f8 | 1148 | goto out_lp_destroy; |
7f349142 VD |
1149 | } |
1150 | ||
96316099 | 1151 | /* Initialize the library */ |
619fe4be | 1152 | rc = fcoe_libfc_config(lport, ctlr, &fcoe_libfc_fcn_templ, 1); |
7f349142 | 1153 | if (rc) { |
96316099 | 1154 | FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the " |
d5488eb9 | 1155 | "interface\n"); |
96316099 | 1156 | goto out_lp_destroy; |
7f349142 VD |
1157 | } |
1158 | ||
6fef3902 NP |
1159 | /* Initialized FDMI information */ |
1160 | fcoe_fdmi_info(lport, netdev); | |
1161 | ||
72fa396b VD |
1162 | /* |
1163 | * fcoe_em_alloc() and fcoe_hostlist_add() both | |
1164 | * need to be atomic with respect to other changes to the | |
1165 | * hostlist since fcoe_em_alloc() looks for an existing EM | |
1166 | * instance on host list updated by fcoe_hostlist_add(). | |
1167 | * | |
1168 | * This is currently handled through the fcoe_config_mutex | |
1169 | * begin held. | |
1170 | */ | |
1171 | if (!npiv) | |
9a05753b CL |
1172 | /* lport exch manager allocation */ |
1173 | rc = fcoe_em_config(lport); | |
72fa396b VD |
1174 | else { |
1175 | shost = vport_to_shost(vport); | |
1176 | n_port = shost_priv(shost); | |
1177 | rc = fc_exch_mgr_list_clone(n_port, lport); | |
1178 | } | |
1179 | ||
1180 | if (rc) { | |
1181 | FCOE_NETDEV_DBG(netdev, "Could not configure the EM\n"); | |
1182 | goto out_lp_destroy; | |
7f349142 VD |
1183 | } |
1184 | ||
af7f85d9 | 1185 | return lport; |
7f349142 VD |
1186 | |
1187 | out_lp_destroy: | |
af7f85d9 | 1188 | fc_exch_mgr_free(lport); |
7f349142 | 1189 | out_host_put: |
af7f85d9 CL |
1190 | scsi_host_put(lport->host); |
1191 | out: | |
1192 | return ERR_PTR(rc); | |
7f349142 VD |
1193 | } |
1194 | ||
1195 | /** | |
1875f27e | 1196 | * fcoe_if_init() - Initialization routine for fcoe.ko |
7f349142 | 1197 | * |
1875f27e RL |
1198 | * Attaches the SW FCoE transport to the FC transport |
1199 | * | |
1200 | * Returns: 0 on success | |
7f349142 VD |
1201 | */ |
1202 | static int __init fcoe_if_init(void) | |
1203 | { | |
1204 | /* attach to scsi transport */ | |
8ca86f84 YZ |
1205 | fcoe_nport_scsi_transport = |
1206 | fc_attach_transport(&fcoe_nport_fc_functions); | |
1207 | fcoe_vport_scsi_transport = | |
1208 | fc_attach_transport(&fcoe_vport_fc_functions); | |
7f349142 | 1209 | |
8ca86f84 | 1210 | if (!fcoe_nport_scsi_transport) { |
d5488eb9 | 1211 | printk(KERN_ERR "fcoe: Failed to attach to the FC transport\n"); |
7f349142 VD |
1212 | return -ENODEV; |
1213 | } | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | /** | |
1875f27e RL |
1219 | * fcoe_if_exit() - Tear down fcoe.ko |
1220 | * | |
1221 | * Detaches the SW FCoE transport from the FC transport | |
7f349142 | 1222 | * |
1875f27e | 1223 | * Returns: 0 on success |
7f349142 | 1224 | */ |
7c9c6841 | 1225 | static int __exit fcoe_if_exit(void) |
7f349142 | 1226 | { |
8ca86f84 YZ |
1227 | fc_release_transport(fcoe_nport_scsi_transport); |
1228 | fc_release_transport(fcoe_vport_scsi_transport); | |
1229 | fcoe_nport_scsi_transport = NULL; | |
1230 | fcoe_vport_scsi_transport = NULL; | |
7f349142 VD |
1231 | return 0; |
1232 | } | |
1233 | ||
8976f424 | 1234 | /** |
1875f27e RL |
1235 | * fcoe_percpu_thread_create() - Create a receive thread for an online CPU |
1236 | * @cpu: The CPU index of the CPU to create a receive thread for | |
8976f424 RL |
1237 | */ |
1238 | static void fcoe_percpu_thread_create(unsigned int cpu) | |
1239 | { | |
1240 | struct fcoe_percpu_s *p; | |
1241 | struct task_struct *thread; | |
1242 | ||
1243 | p = &per_cpu(fcoe_percpu, cpu); | |
1244 | ||
5c609ff9 ED |
1245 | thread = kthread_create_on_node(fcoe_percpu_receive_thread, |
1246 | (void *)p, cpu_to_node(cpu), | |
1247 | "fcoethread/%d", cpu); | |
8976f424 | 1248 | |
e7a51997 | 1249 | if (likely(!IS_ERR(thread))) { |
8976f424 RL |
1250 | kthread_bind(thread, cpu); |
1251 | wake_up_process(thread); | |
1252 | ||
1253 | spin_lock_bh(&p->fcoe_rx_list.lock); | |
1254 | p->thread = thread; | |
1255 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | /** | |
1875f27e RL |
1260 | * fcoe_percpu_thread_destroy() - Remove the receive thread of a CPU |
1261 | * @cpu: The CPU index of the CPU whose receive thread is to be destroyed | |
8976f424 RL |
1262 | * |
1263 | * Destroys a per-CPU Rx thread. Any pending skbs are moved to the | |
1264 | * current CPU's Rx thread. If the thread being destroyed is bound to | |
1265 | * the CPU processing this context the skbs will be freed. | |
1266 | */ | |
1267 | static void fcoe_percpu_thread_destroy(unsigned int cpu) | |
1268 | { | |
1269 | struct fcoe_percpu_s *p; | |
1270 | struct task_struct *thread; | |
1271 | struct page *crc_eof; | |
1272 | struct sk_buff *skb; | |
1273 | #ifdef CONFIG_SMP | |
1274 | struct fcoe_percpu_s *p0; | |
f018b73a | 1275 | unsigned targ_cpu = get_cpu(); |
8976f424 RL |
1276 | #endif /* CONFIG_SMP */ |
1277 | ||
d5488eb9 | 1278 | FCOE_DBG("Destroying receive thread for CPU %d\n", cpu); |
8976f424 RL |
1279 | |
1280 | /* Prevent any new skbs from being queued for this CPU. */ | |
1281 | p = &per_cpu(fcoe_percpu, cpu); | |
1282 | spin_lock_bh(&p->fcoe_rx_list.lock); | |
1283 | thread = p->thread; | |
1284 | p->thread = NULL; | |
1285 | crc_eof = p->crc_eof_page; | |
1286 | p->crc_eof_page = NULL; | |
1287 | p->crc_eof_offset = 0; | |
1288 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1289 | ||
1290 | #ifdef CONFIG_SMP | |
1291 | /* | |
1292 | * Don't bother moving the skb's if this context is running | |
1293 | * on the same CPU that is having its thread destroyed. This | |
1294 | * can easily happen when the module is removed. | |
1295 | */ | |
1296 | if (cpu != targ_cpu) { | |
1297 | p0 = &per_cpu(fcoe_percpu, targ_cpu); | |
1298 | spin_lock_bh(&p0->fcoe_rx_list.lock); | |
1299 | if (p0->thread) { | |
d5488eb9 RL |
1300 | FCOE_DBG("Moving frames from CPU %d to CPU %d\n", |
1301 | cpu, targ_cpu); | |
8976f424 RL |
1302 | |
1303 | while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL) | |
1304 | __skb_queue_tail(&p0->fcoe_rx_list, skb); | |
1305 | spin_unlock_bh(&p0->fcoe_rx_list.lock); | |
1306 | } else { | |
1307 | /* | |
1308 | * The targeted CPU is not initialized and cannot accept | |
1875f27e | 1309 | * new skbs. Unlock the targeted CPU and drop the skbs |
8976f424 RL |
1310 | * on the CPU that is going offline. |
1311 | */ | |
1312 | while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL) | |
1313 | kfree_skb(skb); | |
1314 | spin_unlock_bh(&p0->fcoe_rx_list.lock); | |
1315 | } | |
1316 | } else { | |
1317 | /* | |
1318 | * This scenario occurs when the module is being removed | |
1319 | * and all threads are being destroyed. skbs will continue | |
1320 | * to be shifted from the CPU thread that is being removed | |
1321 | * to the CPU thread associated with the CPU that is processing | |
1322 | * the module removal. Once there is only one CPU Rx thread it | |
1323 | * will reach this case and we will drop all skbs and later | |
1324 | * stop the thread. | |
1325 | */ | |
1326 | spin_lock_bh(&p->fcoe_rx_list.lock); | |
1327 | while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL) | |
1328 | kfree_skb(skb); | |
1329 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1330 | } | |
f018b73a | 1331 | put_cpu(); |
8976f424 RL |
1332 | #else |
1333 | /* | |
dd3fd72e | 1334 | * This a non-SMP scenario where the singular Rx thread is |
8976f424 RL |
1335 | * being removed. Free all skbs and stop the thread. |
1336 | */ | |
1337 | spin_lock_bh(&p->fcoe_rx_list.lock); | |
1338 | while ((skb = __skb_dequeue(&p->fcoe_rx_list)) != NULL) | |
1339 | kfree_skb(skb); | |
1340 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1341 | #endif | |
1342 | ||
1343 | if (thread) | |
1344 | kthread_stop(thread); | |
1345 | ||
1346 | if (crc_eof) | |
1347 | put_page(crc_eof); | |
1348 | } | |
1349 | ||
1350 | /** | |
1875f27e RL |
1351 | * fcoe_cpu_callback() - Handler for CPU hotplug events |
1352 | * @nfb: The callback data block | |
1353 | * @action: The event triggering the callback | |
1354 | * @hcpu: The index of the CPU that the event is for | |
8976f424 | 1355 | * |
1875f27e | 1356 | * This creates or destroys per-CPU data for fcoe |
8976f424 RL |
1357 | * |
1358 | * Returns NOTIFY_OK always. | |
1359 | */ | |
1360 | static int fcoe_cpu_callback(struct notifier_block *nfb, | |
1361 | unsigned long action, void *hcpu) | |
1362 | { | |
1363 | unsigned cpu = (unsigned long)hcpu; | |
1364 | ||
1365 | switch (action) { | |
1366 | case CPU_ONLINE: | |
1367 | case CPU_ONLINE_FROZEN: | |
d5488eb9 | 1368 | FCOE_DBG("CPU %x online: Create Rx thread\n", cpu); |
8976f424 RL |
1369 | fcoe_percpu_thread_create(cpu); |
1370 | break; | |
1371 | case CPU_DEAD: | |
1372 | case CPU_DEAD_FROZEN: | |
d5488eb9 | 1373 | FCOE_DBG("CPU %x offline: Remove Rx thread\n", cpu); |
8976f424 RL |
1374 | fcoe_percpu_thread_destroy(cpu); |
1375 | break; | |
1376 | default: | |
1377 | break; | |
1378 | } | |
1379 | return NOTIFY_OK; | |
1380 | } | |
1381 | ||
064287ee KP |
1382 | /** |
1383 | * fcoe_select_cpu() - Selects CPU to handle post-processing of incoming | |
1384 | * command. | |
064287ee | 1385 | * |
d272281c VD |
1386 | * This routine selects next CPU based on cpumask to distribute |
1387 | * incoming requests in round robin. | |
064287ee | 1388 | * |
d272281c | 1389 | * Returns: int CPU number |
064287ee | 1390 | */ |
d272281c | 1391 | static inline unsigned int fcoe_select_cpu(void) |
064287ee KP |
1392 | { |
1393 | static unsigned int selected_cpu; | |
1394 | ||
d272281c VD |
1395 | selected_cpu = cpumask_next(selected_cpu, cpu_online_mask); |
1396 | if (selected_cpu >= nr_cpu_ids) | |
1397 | selected_cpu = cpumask_first(cpu_online_mask); | |
1398 | ||
064287ee KP |
1399 | return selected_cpu; |
1400 | } | |
1401 | ||
85b4aa49 | 1402 | /** |
1875f27e RL |
1403 | * fcoe_rcv() - Receive packets from a net device |
1404 | * @skb: The received packet | |
1405 | * @netdev: The net device that the packet was received on | |
1406 | * @ptype: The packet type context | |
1407 | * @olddev: The last device net device | |
85b4aa49 | 1408 | * |
1875f27e RL |
1409 | * This routine is called by NET_RX_SOFTIRQ. It receives a packet, builds a |
1410 | * FC frame and passes the frame to libfc. | |
85b4aa49 RL |
1411 | * |
1412 | * Returns: 0 for success | |
34f42a07 | 1413 | */ |
7c9c6841 | 1414 | static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev, |
85b4aa49 RL |
1415 | struct packet_type *ptype, struct net_device *olddev) |
1416 | { | |
1875f27e | 1417 | struct fc_lport *lport; |
85b4aa49 | 1418 | struct fcoe_rcv_info *fr; |
619fe4be | 1419 | struct fcoe_ctlr *ctlr; |
259ad85d | 1420 | struct fcoe_interface *fcoe; |
85b4aa49 | 1421 | struct fc_frame_header *fh; |
85b4aa49 | 1422 | struct fcoe_percpu_s *fps; |
519e5135 | 1423 | struct ethhdr *eh; |
b2f0091f | 1424 | unsigned int cpu; |
85b4aa49 | 1425 | |
259ad85d | 1426 | fcoe = container_of(ptype, struct fcoe_interface, fcoe_packet_type); |
619fe4be RL |
1427 | ctlr = fcoe_to_ctlr(fcoe); |
1428 | lport = ctlr->lp; | |
1875f27e RL |
1429 | if (unlikely(!lport)) { |
1430 | FCOE_NETDEV_DBG(netdev, "Cannot find hba structure"); | |
85b4aa49 RL |
1431 | goto err2; |
1432 | } | |
1875f27e | 1433 | if (!lport->link_up) |
97c8389d | 1434 | goto err2; |
85b4aa49 | 1435 | |
1875f27e | 1436 | FCOE_NETDEV_DBG(netdev, "skb_info: len:%d data_len:%d head:%p " |
d5488eb9 RL |
1437 | "data:%p tail:%p end:%p sum:%d dev:%s", |
1438 | skb->len, skb->data_len, skb->head, skb->data, | |
1439 | skb_tail_pointer(skb), skb_end_pointer(skb), | |
1440 | skb->csum, skb->dev ? skb->dev->name : "<NULL>"); | |
85b4aa49 | 1441 | |
519e5135 | 1442 | eh = eth_hdr(skb); |
519e5135 | 1443 | |
619fe4be RL |
1444 | if (is_fip_mode(ctlr) && |
1445 | compare_ether_addr(eh->h_source, ctlr->dest_addr)) { | |
519e5135 VD |
1446 | FCOE_NETDEV_DBG(netdev, "wrong source mac address:%pM\n", |
1447 | eh->h_source); | |
85b4aa49 RL |
1448 | goto err; |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Check for minimum frame length, and make sure required FCoE | |
1453 | * and FC headers are pulled into the linear data area. | |
1454 | */ | |
1455 | if (unlikely((skb->len < FCOE_MIN_FRAME) || | |
1875f27e | 1456 | !pskb_may_pull(skb, FCOE_HEADER_LEN))) |
85b4aa49 RL |
1457 | goto err; |
1458 | ||
1459 | skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); | |
1460 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1461 | ||
0ee31cb5 RL |
1462 | if (ntoh24(&eh->h_dest[3]) != ntoh24(fh->fh_d_id)) { |
1463 | FCOE_NETDEV_DBG(netdev, "FC frame d_id mismatch with MAC:%pM\n", | |
1464 | eh->h_dest); | |
1465 | goto err; | |
1466 | } | |
1467 | ||
85b4aa49 | 1468 | fr = fcoe_dev_from_skb(skb); |
1875f27e | 1469 | fr->fr_dev = lport; |
5e5e92df | 1470 | |
85b4aa49 | 1471 | /* |
b2f0091f VD |
1472 | * In case the incoming frame's exchange is originated from |
1473 | * the initiator, then received frame's exchange id is ANDed | |
1474 | * with fc_cpu_mask bits to get the same cpu on which exchange | |
d272281c VD |
1475 | * was originated, otherwise select cpu using rx exchange id |
1476 | * or fcoe_select_cpu(). | |
85b4aa49 | 1477 | */ |
b2f0091f VD |
1478 | if (ntoh24(fh->fh_f_ctl) & FC_FC_EX_CTX) |
1479 | cpu = ntohs(fh->fh_ox_id) & fc_cpu_mask; | |
064287ee | 1480 | else { |
d272281c VD |
1481 | if (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN) |
1482 | cpu = fcoe_select_cpu(); | |
1483 | else | |
29bdd2bb | 1484 | cpu = ntohs(fh->fh_rx_id) & fc_cpu_mask; |
064287ee | 1485 | } |
324f6678 VD |
1486 | |
1487 | if (cpu >= nr_cpu_ids) | |
1488 | goto err; | |
1489 | ||
8976f424 | 1490 | fps = &per_cpu(fcoe_percpu, cpu); |
94aa29f2 | 1491 | spin_lock(&fps->fcoe_rx_list.lock); |
8976f424 RL |
1492 | if (unlikely(!fps->thread)) { |
1493 | /* | |
1494 | * The targeted CPU is not ready, let's target | |
1495 | * the first CPU now. For non-SMP systems this | |
1496 | * will check the same CPU twice. | |
1497 | */ | |
1875f27e | 1498 | FCOE_NETDEV_DBG(netdev, "CPU is online, but no receive thread " |
d5488eb9 RL |
1499 | "ready for incoming skb- using first online " |
1500 | "CPU.\n"); | |
8976f424 | 1501 | |
94aa29f2 | 1502 | spin_unlock(&fps->fcoe_rx_list.lock); |
6957177f | 1503 | cpu = cpumask_first(cpu_online_mask); |
8976f424 | 1504 | fps = &per_cpu(fcoe_percpu, cpu); |
94aa29f2 | 1505 | spin_lock(&fps->fcoe_rx_list.lock); |
8976f424 | 1506 | if (!fps->thread) { |
94aa29f2 | 1507 | spin_unlock(&fps->fcoe_rx_list.lock); |
8976f424 RL |
1508 | goto err; |
1509 | } | |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * We now have a valid CPU that we're targeting for | |
1514 | * this skb. We also have this receive thread locked, | |
1515 | * so we're free to queue skbs into it's queue. | |
1516 | */ | |
85b4aa49 | 1517 | |
5e70c4c4 NH |
1518 | /* |
1519 | * Note: We used to have a set of conditions under which we would | |
1520 | * call fcoe_recv_frame directly, rather than queuing to the rx list | |
1521 | * as it could save a few cycles, but doing so is prohibited, as | |
1522 | * fcoe_recv_frame has several paths that may sleep, which is forbidden | |
1523 | * in softirq context. | |
859b7b64 | 1524 | */ |
5e70c4c4 | 1525 | __skb_queue_tail(&fps->fcoe_rx_list, skb); |
20dc3811 | 1526 | if (fps->thread->state == TASK_INTERRUPTIBLE) |
5e70c4c4 | 1527 | wake_up_process(fps->thread); |
94aa29f2 | 1528 | spin_unlock(&fps->fcoe_rx_list.lock); |
85b4aa49 RL |
1529 | |
1530 | return 0; | |
1531 | err: | |
f018b73a JE |
1532 | per_cpu_ptr(lport->dev_stats, get_cpu())->ErrorFrames++; |
1533 | put_cpu(); | |
85b4aa49 RL |
1534 | err2: |
1535 | kfree_skb(skb); | |
1536 | return -1; | |
1537 | } | |
85b4aa49 RL |
1538 | |
1539 | /** | |
8597ae8b | 1540 | * fcoe_alloc_paged_crc_eof() - Allocate a page to be used for the trailer CRC |
1875f27e RL |
1541 | * @skb: The packet to be transmitted |
1542 | * @tlen: The total length of the trailer | |
1543 | * | |
85b4aa49 | 1544 | * Returns: 0 for success |
34f42a07 | 1545 | */ |
8597ae8b | 1546 | static int fcoe_alloc_paged_crc_eof(struct sk_buff *skb, int tlen) |
85b4aa49 RL |
1547 | { |
1548 | struct fcoe_percpu_s *fps; | |
8597ae8b | 1549 | int rc; |
85b4aa49 | 1550 | |
5e5e92df | 1551 | fps = &get_cpu_var(fcoe_percpu); |
8597ae8b | 1552 | rc = fcoe_get_paged_crc_eof(skb, tlen, fps); |
5e5e92df | 1553 | put_cpu_var(fcoe_percpu); |
85b4aa49 | 1554 | |
8597ae8b | 1555 | return rc; |
85b4aa49 | 1556 | } |
85b4aa49 RL |
1557 | |
1558 | /** | |
1875f27e RL |
1559 | * fcoe_xmit() - Transmit a FCoE frame |
1560 | * @lport: The local port that the frame is to be transmitted for | |
1561 | * @fp: The frame to be transmitted | |
85b4aa49 | 1562 | * |
1875f27e | 1563 | * Return: 0 for success |
34f42a07 | 1564 | */ |
7c9c6841 | 1565 | static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) |
85b4aa49 | 1566 | { |
4bb6b515 | 1567 | int wlen; |
85b4aa49 RL |
1568 | u32 crc; |
1569 | struct ethhdr *eh; | |
1570 | struct fcoe_crc_eof *cp; | |
1571 | struct sk_buff *skb; | |
1572 | struct fcoe_dev_stats *stats; | |
1573 | struct fc_frame_header *fh; | |
1574 | unsigned int hlen; /* header length implies the version */ | |
1575 | unsigned int tlen; /* trailer length */ | |
1576 | unsigned int elen; /* eth header, may include vlan */ | |
1875f27e | 1577 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 1578 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 1579 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
85b4aa49 RL |
1580 | u8 sof, eof; |
1581 | struct fcoe_hdr *hp; | |
1582 | ||
1583 | WARN_ON((fr_len(fp) % sizeof(u32)) != 0); | |
1584 | ||
85b4aa49 | 1585 | fh = fc_frame_header_get(fp); |
97c8389d JE |
1586 | skb = fp_skb(fp); |
1587 | wlen = skb->len / FCOE_WORD_TO_BYTE; | |
1588 | ||
1875f27e | 1589 | if (!lport->link_up) { |
3caf02ee | 1590 | kfree_skb(skb); |
97c8389d | 1591 | return 0; |
85b4aa49 RL |
1592 | } |
1593 | ||
9860eeb4 | 1594 | if (unlikely(fh->fh_type == FC_TYPE_ELS) && |
619fe4be | 1595 | fcoe_ctlr_els_send(ctlr, lport, skb)) |
97c8389d JE |
1596 | return 0; |
1597 | ||
85b4aa49 RL |
1598 | sof = fr_sof(fp); |
1599 | eof = fr_eof(fp); | |
1600 | ||
4e57e1cb | 1601 | elen = sizeof(struct ethhdr); |
85b4aa49 RL |
1602 | hlen = sizeof(struct fcoe_hdr); |
1603 | tlen = sizeof(struct fcoe_crc_eof); | |
1604 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; | |
1605 | ||
1606 | /* crc offload */ | |
1875f27e | 1607 | if (likely(lport->crc_offload)) { |
cf64bc8f | 1608 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
85b4aa49 RL |
1609 | skb->csum_start = skb_headroom(skb); |
1610 | skb->csum_offset = skb->len; | |
1611 | crc = 0; | |
1612 | } else { | |
1613 | skb->ip_summed = CHECKSUM_NONE; | |
1614 | crc = fcoe_fc_crc(fp); | |
1615 | } | |
1616 | ||
014f5c3f | 1617 | /* copy port crc and eof to the skb buff */ |
85b4aa49 RL |
1618 | if (skb_is_nonlinear(skb)) { |
1619 | skb_frag_t *frag; | |
8597ae8b | 1620 | if (fcoe_alloc_paged_crc_eof(skb, tlen)) { |
e9041581 | 1621 | kfree_skb(skb); |
85b4aa49 RL |
1622 | return -ENOMEM; |
1623 | } | |
1624 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; | |
77dfce07 | 1625 | cp = kmap_atomic(skb_frag_page(frag)) |
85b4aa49 RL |
1626 | + frag->page_offset; |
1627 | } else { | |
1628 | cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); | |
1629 | } | |
1630 | ||
1631 | memset(cp, 0, sizeof(*cp)); | |
1632 | cp->fcoe_eof = eof; | |
1633 | cp->fcoe_crc32 = cpu_to_le32(~crc); | |
1634 | ||
1635 | if (skb_is_nonlinear(skb)) { | |
77dfce07 | 1636 | kunmap_atomic(cp); |
85b4aa49 RL |
1637 | cp = NULL; |
1638 | } | |
1639 | ||
014f5c3f | 1640 | /* adjust skb network/transport offsets to match mac/fcoe/port */ |
85b4aa49 RL |
1641 | skb_push(skb, elen + hlen); |
1642 | skb_reset_mac_header(skb); | |
1643 | skb_reset_network_header(skb); | |
1644 | skb->mac_len = elen; | |
211c738d | 1645 | skb->protocol = htons(ETH_P_FCOE); |
6f6c2aa3 | 1646 | skb->priority = port->priority; |
1647 | ||
d1483bb9 VD |
1648 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN && |
1649 | fcoe->realdev->features & NETIF_F_HW_VLAN_TX) { | |
1650 | skb->vlan_tci = VLAN_TAG_PRESENT | | |
1651 | vlan_dev_vlan_id(fcoe->netdev); | |
1652 | skb->dev = fcoe->realdev; | |
1653 | } else | |
1654 | skb->dev = fcoe->netdev; | |
85b4aa49 RL |
1655 | |
1656 | /* fill up mac and fcoe headers */ | |
1657 | eh = eth_hdr(skb); | |
1658 | eh->h_proto = htons(ETH_P_FCOE); | |
619fe4be RL |
1659 | memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); |
1660 | if (ctlr->map_dest) | |
cd229e42 | 1661 | memcpy(eh->h_dest + 3, fh->fh_d_id, 3); |
85b4aa49 | 1662 | |
619fe4be RL |
1663 | if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) |
1664 | memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); | |
85b4aa49 | 1665 | else |
11b56188 | 1666 | memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); |
85b4aa49 RL |
1667 | |
1668 | hp = (struct fcoe_hdr *)(eh + 1); | |
1669 | memset(hp, 0, sizeof(*hp)); | |
1670 | if (FC_FCOE_VER) | |
1671 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); | |
1672 | hp->fcoe_sof = sof; | |
1673 | ||
39ca9a06 | 1674 | /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ |
1875f27e | 1675 | if (lport->seq_offload && fr_max_payload(fp)) { |
39ca9a06 YZ |
1676 | skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; |
1677 | skb_shinfo(skb)->gso_size = fr_max_payload(fp); | |
1678 | } else { | |
1679 | skb_shinfo(skb)->gso_type = 0; | |
1680 | skb_shinfo(skb)->gso_size = 0; | |
1681 | } | |
85b4aa49 | 1682 | /* update tx stats: regardless if LLD fails */ |
f018b73a | 1683 | stats = per_cpu_ptr(lport->dev_stats, get_cpu()); |
582b45bc RL |
1684 | stats->TxFrames++; |
1685 | stats->TxWords += wlen; | |
f018b73a | 1686 | put_cpu(); |
85b4aa49 RL |
1687 | |
1688 | /* send down to lld */ | |
1875f27e | 1689 | fr_dev(fp) = lport; |
980f5156 | 1690 | fcoe_port_send(port, skb); |
85b4aa49 RL |
1691 | return 0; |
1692 | } | |
85b4aa49 | 1693 | |
e7a51997 | 1694 | /** |
1875f27e RL |
1695 | * fcoe_percpu_flush_done() - Indicate per-CPU queue flush completion |
1696 | * @skb: The completed skb (argument required by destructor) | |
e7a51997 JE |
1697 | */ |
1698 | static void fcoe_percpu_flush_done(struct sk_buff *skb) | |
1699 | { | |
1700 | complete(&fcoe_flush_completion); | |
1701 | } | |
1702 | ||
52ee8321 VD |
1703 | /** |
1704 | * fcoe_filter_frames() - filter out bad fcoe frames, i.e. bad CRC | |
1705 | * @lport: The local port the frame was received on | |
1706 | * @fp: The received frame | |
1707 | * | |
1708 | * Return: 0 on passing filtering checks | |
1709 | */ | |
1710 | static inline int fcoe_filter_frames(struct fc_lport *lport, | |
1711 | struct fc_frame *fp) | |
1712 | { | |
619fe4be | 1713 | struct fcoe_ctlr *ctlr; |
52ee8321 VD |
1714 | struct fcoe_interface *fcoe; |
1715 | struct fc_frame_header *fh; | |
1716 | struct sk_buff *skb = (struct sk_buff *)fp; | |
1717 | struct fcoe_dev_stats *stats; | |
1718 | ||
1719 | /* | |
1720 | * We only check CRC if no offload is available and if it is | |
1721 | * it's solicited data, in which case, the FCP layer would | |
1722 | * check it during the copy. | |
1723 | */ | |
1724 | if (lport->crc_offload && skb->ip_summed == CHECKSUM_UNNECESSARY) | |
1725 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1726 | else | |
1727 | fr_flags(fp) |= FCPHF_CRC_UNCHECKED; | |
1728 | ||
1729 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1730 | fh = fc_frame_header_get(fp); | |
1731 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && fh->fh_type == FC_TYPE_FCP) | |
1732 | return 0; | |
1733 | ||
8597ae8b | 1734 | fcoe = ((struct fcoe_port *)lport_priv(lport))->priv; |
619fe4be RL |
1735 | ctlr = fcoe_to_ctlr(fcoe); |
1736 | if (is_fip_mode(ctlr) && fc_frame_payload_op(fp) == ELS_LOGO && | |
52ee8321 VD |
1737 | ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { |
1738 | FCOE_DBG("fcoe: dropping FCoE lport LOGO in fip mode\n"); | |
1739 | return -EINVAL; | |
1740 | } | |
1741 | ||
f2f96d20 | 1742 | if (!(fr_flags(fp) & FCPHF_CRC_UNCHECKED) || |
52ee8321 VD |
1743 | le32_to_cpu(fr_crc(fp)) == ~crc32(~0, skb->data, skb->len)) { |
1744 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1745 | return 0; | |
1746 | } | |
1747 | ||
1748 | stats = per_cpu_ptr(lport->dev_stats, get_cpu()); | |
1749 | stats->InvalidCRCCount++; | |
1750 | if (stats->InvalidCRCCount < 5) | |
1751 | printk(KERN_WARNING "fcoe: dropping frame with CRC error\n"); | |
7e1e7ead | 1752 | put_cpu(); |
52ee8321 VD |
1753 | return -EINVAL; |
1754 | } | |
1755 | ||
34f42a07 | 1756 | /** |
859b7b64 CL |
1757 | * fcoe_recv_frame() - process a single received frame |
1758 | * @skb: frame to process | |
85b4aa49 | 1759 | */ |
859b7b64 | 1760 | static void fcoe_recv_frame(struct sk_buff *skb) |
85b4aa49 | 1761 | { |
85b4aa49 | 1762 | u32 fr_len; |
1875f27e | 1763 | struct fc_lport *lport; |
85b4aa49 RL |
1764 | struct fcoe_rcv_info *fr; |
1765 | struct fcoe_dev_stats *stats; | |
85b4aa49 RL |
1766 | struct fcoe_crc_eof crc_eof; |
1767 | struct fc_frame *fp; | |
014f5c3f | 1768 | struct fcoe_port *port; |
85b4aa49 RL |
1769 | struct fcoe_hdr *hp; |
1770 | ||
859b7b64 CL |
1771 | fr = fcoe_dev_from_skb(skb); |
1772 | lport = fr->fr_dev; | |
1773 | if (unlikely(!lport)) { | |
1774 | if (skb->destructor != fcoe_percpu_flush_done) | |
1775 | FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb"); | |
1776 | kfree_skb(skb); | |
1777 | return; | |
1778 | } | |
1779 | ||
1780 | FCOE_NETDEV_DBG(skb->dev, "skb_info: len:%d data_len:%d " | |
1781 | "head:%p data:%p tail:%p end:%p sum:%d dev:%s", | |
1782 | skb->len, skb->data_len, | |
1783 | skb->head, skb->data, skb_tail_pointer(skb), | |
1784 | skb_end_pointer(skb), skb->csum, | |
1785 | skb->dev ? skb->dev->name : "<NULL>"); | |
1786 | ||
859b7b64 | 1787 | port = lport_priv(lport); |
f1633011 | 1788 | skb_linearize(skb); /* check for skb_is_nonlinear is within skb_linearize */ |
859b7b64 CL |
1789 | |
1790 | /* | |
1791 | * Frame length checks and setting up the header pointers | |
1792 | * was done in fcoe_rcv already. | |
1793 | */ | |
1794 | hp = (struct fcoe_hdr *) skb_network_header(skb); | |
859b7b64 | 1795 | |
f018b73a | 1796 | stats = per_cpu_ptr(lport->dev_stats, get_cpu()); |
859b7b64 CL |
1797 | if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) { |
1798 | if (stats->ErrorFrames < 5) | |
1799 | printk(KERN_WARNING "fcoe: FCoE version " | |
1800 | "mismatch: The frame has " | |
1801 | "version %x, but the " | |
1802 | "initiator supports version " | |
1803 | "%x\n", FC_FCOE_DECAPS_VER(hp), | |
1804 | FC_FCOE_VER); | |
f018b73a | 1805 | goto drop; |
859b7b64 CL |
1806 | } |
1807 | ||
1808 | skb_pull(skb, sizeof(struct fcoe_hdr)); | |
1809 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); | |
1810 | ||
1811 | stats->RxFrames++; | |
1812 | stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; | |
1813 | ||
1814 | fp = (struct fc_frame *)skb; | |
1815 | fc_frame_init(fp); | |
1816 | fr_dev(fp) = lport; | |
1817 | fr_sof(fp) = hp->fcoe_sof; | |
1818 | ||
1819 | /* Copy out the CRC and EOF trailer for access */ | |
f018b73a JE |
1820 | if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) |
1821 | goto drop; | |
859b7b64 CL |
1822 | fr_eof(fp) = crc_eof.fcoe_eof; |
1823 | fr_crc(fp) = crc_eof.fcoe_crc32; | |
f018b73a JE |
1824 | if (pskb_trim(skb, fr_len)) |
1825 | goto drop; | |
859b7b64 | 1826 | |
52ee8321 VD |
1827 | if (!fcoe_filter_frames(lport, fp)) { |
1828 | put_cpu(); | |
1829 | fc_exch_recv(lport, fp); | |
1830 | return; | |
859b7b64 | 1831 | } |
f018b73a JE |
1832 | drop: |
1833 | stats->ErrorFrames++; | |
1834 | put_cpu(); | |
1835 | kfree_skb(skb); | |
859b7b64 CL |
1836 | } |
1837 | ||
1838 | /** | |
1839 | * fcoe_percpu_receive_thread() - The per-CPU packet receive thread | |
1840 | * @arg: The per-CPU context | |
1841 | * | |
1842 | * Return: 0 for success | |
1843 | */ | |
7c9c6841 | 1844 | static int fcoe_percpu_receive_thread(void *arg) |
859b7b64 CL |
1845 | { |
1846 | struct fcoe_percpu_s *p = arg; | |
1847 | struct sk_buff *skb; | |
20dc3811 NH |
1848 | struct sk_buff_head tmp; |
1849 | ||
1850 | skb_queue_head_init(&tmp); | |
859b7b64 | 1851 | |
4469c195 | 1852 | set_user_nice(current, -20); |
85b4aa49 RL |
1853 | |
1854 | while (!kthread_should_stop()) { | |
1855 | ||
1856 | spin_lock_bh(&p->fcoe_rx_list.lock); | |
20dc3811 NH |
1857 | skb_queue_splice_init(&p->fcoe_rx_list, &tmp); |
1858 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1859 | ||
1860 | while ((skb = __skb_dequeue(&tmp)) != NULL) | |
1861 | fcoe_recv_frame(skb); | |
1862 | ||
1863 | spin_lock_bh(&p->fcoe_rx_list.lock); | |
1864 | if (!skb_queue_len(&p->fcoe_rx_list)) { | |
85b4aa49 RL |
1865 | set_current_state(TASK_INTERRUPTIBLE); |
1866 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1867 | schedule(); | |
1868 | set_current_state(TASK_RUNNING); | |
20dc3811 NH |
1869 | } else |
1870 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
85b4aa49 RL |
1871 | } |
1872 | return 0; | |
1873 | } | |
1874 | ||
85b4aa49 | 1875 | /** |
1875f27e | 1876 | * fcoe_dev_setup() - Setup the link change notification interface |
34f42a07 | 1877 | */ |
b0d428ad | 1878 | static void fcoe_dev_setup(void) |
85b4aa49 | 1879 | { |
6f6c2aa3 | 1880 | register_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1881 | register_netdevice_notifier(&fcoe_notifier); |
1882 | } | |
1883 | ||
1884 | /** | |
1875f27e | 1885 | * fcoe_dev_cleanup() - Cleanup the link change notification interface |
34f42a07 | 1886 | */ |
85b4aa49 RL |
1887 | static void fcoe_dev_cleanup(void) |
1888 | { | |
6f6c2aa3 | 1889 | unregister_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1890 | unregister_netdevice_notifier(&fcoe_notifier); |
1891 | } | |
1892 | ||
6f6c2aa3 | 1893 | static struct fcoe_interface * |
1894 | fcoe_hostlist_lookup_realdev_port(struct net_device *netdev) | |
1895 | { | |
1896 | struct fcoe_interface *fcoe; | |
1897 | struct net_device *real_dev; | |
1898 | ||
1899 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { | |
1900 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN) | |
1901 | real_dev = vlan_dev_real_dev(fcoe->netdev); | |
1902 | else | |
1903 | real_dev = fcoe->netdev; | |
1904 | ||
1905 | if (netdev == real_dev) | |
1906 | return fcoe; | |
1907 | } | |
1908 | return NULL; | |
1909 | } | |
1910 | ||
1911 | static int fcoe_dcb_app_notification(struct notifier_block *notifier, | |
1912 | ulong event, void *ptr) | |
1913 | { | |
1914 | struct dcb_app_type *entry = ptr; | |
619fe4be | 1915 | struct fcoe_ctlr *ctlr; |
6f6c2aa3 | 1916 | struct fcoe_interface *fcoe; |
1917 | struct net_device *netdev; | |
1918 | struct fcoe_port *port; | |
1919 | int prio; | |
1920 | ||
1921 | if (entry->app.selector != DCB_APP_IDTYPE_ETHTYPE) | |
1922 | return NOTIFY_OK; | |
1923 | ||
1924 | netdev = dev_get_by_index(&init_net, entry->ifindex); | |
1925 | if (!netdev) | |
1926 | return NOTIFY_OK; | |
1927 | ||
1928 | fcoe = fcoe_hostlist_lookup_realdev_port(netdev); | |
1929 | dev_put(netdev); | |
1930 | if (!fcoe) | |
1931 | return NOTIFY_OK; | |
1932 | ||
619fe4be RL |
1933 | ctlr = fcoe_to_ctlr(fcoe); |
1934 | ||
6f6c2aa3 | 1935 | if (entry->dcbx & DCB_CAP_DCBX_VER_CEE) |
1936 | prio = ffs(entry->app.priority) - 1; | |
1937 | else | |
1938 | prio = entry->app.priority; | |
1939 | ||
1940 | if (prio < 0) | |
1941 | return NOTIFY_OK; | |
1942 | ||
1943 | if (entry->app.protocol == ETH_P_FIP || | |
1944 | entry->app.protocol == ETH_P_FCOE) | |
619fe4be | 1945 | ctlr->priority = prio; |
6f6c2aa3 | 1946 | |
1947 | if (entry->app.protocol == ETH_P_FCOE) { | |
619fe4be | 1948 | port = lport_priv(ctlr->lp); |
6f6c2aa3 | 1949 | port->priority = prio; |
1950 | } | |
1951 | ||
1952 | return NOTIFY_OK; | |
1953 | } | |
1954 | ||
85b4aa49 | 1955 | /** |
1875f27e RL |
1956 | * fcoe_device_notification() - Handler for net device events |
1957 | * @notifier: The context of the notification | |
1958 | * @event: The type of event | |
1959 | * @ptr: The net device that the event was on | |
85b4aa49 | 1960 | * |
1875f27e | 1961 | * This function is called by the Ethernet driver in case of link change event. |
85b4aa49 RL |
1962 | * |
1963 | * Returns: 0 for success | |
34f42a07 | 1964 | */ |
85b4aa49 RL |
1965 | static int fcoe_device_notification(struct notifier_block *notifier, |
1966 | ulong event, void *ptr) | |
1967 | { | |
1875f27e | 1968 | struct fc_lport *lport = NULL; |
1d1b88dc | 1969 | struct net_device *netdev = ptr; |
619fe4be | 1970 | struct fcoe_ctlr *ctlr; |
014f5c3f | 1971 | struct fcoe_interface *fcoe; |
2e70e241 | 1972 | struct fcoe_port *port; |
85b4aa49 | 1973 | struct fcoe_dev_stats *stats; |
97c8389d | 1974 | u32 link_possible = 1; |
85b4aa49 RL |
1975 | u32 mfs; |
1976 | int rc = NOTIFY_OK; | |
1977 | ||
014f5c3f | 1978 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
25024989 | 1979 | if (fcoe->netdev == netdev) { |
619fe4be RL |
1980 | ctlr = fcoe_to_ctlr(fcoe); |
1981 | lport = ctlr->lp; | |
85b4aa49 RL |
1982 | break; |
1983 | } | |
1984 | } | |
1875f27e | 1985 | if (!lport) { |
85b4aa49 RL |
1986 | rc = NOTIFY_DONE; |
1987 | goto out; | |
1988 | } | |
1989 | ||
85b4aa49 RL |
1990 | switch (event) { |
1991 | case NETDEV_DOWN: | |
1992 | case NETDEV_GOING_DOWN: | |
97c8389d | 1993 | link_possible = 0; |
85b4aa49 RL |
1994 | break; |
1995 | case NETDEV_UP: | |
1996 | case NETDEV_CHANGE: | |
85b4aa49 RL |
1997 | break; |
1998 | case NETDEV_CHANGEMTU: | |
7221d7e5 YZ |
1999 | if (netdev->features & NETIF_F_FCOE_MTU) |
2000 | break; | |
1d1b88dc VD |
2001 | mfs = netdev->mtu - (sizeof(struct fcoe_hdr) + |
2002 | sizeof(struct fcoe_crc_eof)); | |
85b4aa49 | 2003 | if (mfs >= FC_MIN_MAX_FRAME) |
1875f27e | 2004 | fc_set_mfs(lport, mfs); |
85b4aa49 RL |
2005 | break; |
2006 | case NETDEV_REGISTER: | |
2007 | break; | |
2e70e241 CL |
2008 | case NETDEV_UNREGISTER: |
2009 | list_del(&fcoe->list); | |
619fe4be | 2010 | port = lport_priv(ctlr->lp); |
2ca32b48 | 2011 | queue_work(fcoe_wq, &port->destroy_work); |
2e70e241 CL |
2012 | goto out; |
2013 | break; | |
54a5b21d YZ |
2014 | case NETDEV_FEAT_CHANGE: |
2015 | fcoe_netdev_features_change(lport, netdev); | |
2016 | break; | |
85b4aa49 | 2017 | default: |
1d1b88dc | 2018 | FCOE_NETDEV_DBG(netdev, "Unknown event %ld " |
d5488eb9 | 2019 | "from netdev netlink\n", event); |
85b4aa49 | 2020 | } |
5e4f8fe7 RL |
2021 | |
2022 | fcoe_link_speed_update(lport); | |
2023 | ||
1875f27e | 2024 | if (link_possible && !fcoe_link_ok(lport)) |
619fe4be RL |
2025 | fcoe_ctlr_link_up(ctlr); |
2026 | else if (fcoe_ctlr_link_down(ctlr)) { | |
f018b73a | 2027 | stats = per_cpu_ptr(lport->dev_stats, get_cpu()); |
97c8389d | 2028 | stats->LinkFailureCount++; |
f018b73a | 2029 | put_cpu(); |
1875f27e | 2030 | fcoe_clean_pending_queue(lport); |
85b4aa49 RL |
2031 | } |
2032 | out: | |
2033 | return rc; | |
2034 | } | |
2035 | ||
55a66d3c VD |
2036 | /** |
2037 | * fcoe_disable() - Disables a FCoE interface | |
78a58246 | 2038 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 2039 | * |
78a58246 | 2040 | * Called from fcoe transport. |
55a66d3c VD |
2041 | * |
2042 | * Returns: 0 for success | |
2043 | */ | |
78a58246 | 2044 | static int fcoe_disable(struct net_device *netdev) |
55a66d3c | 2045 | { |
619fe4be | 2046 | struct fcoe_ctlr *ctlr; |
55a66d3c | 2047 | struct fcoe_interface *fcoe; |
55a66d3c VD |
2048 | int rc = 0; |
2049 | ||
2050 | mutex_lock(&fcoe_config_mutex); | |
55a66d3c | 2051 | |
ee5df628 | 2052 | rtnl_lock(); |
55a66d3c VD |
2053 | fcoe = fcoe_hostlist_lookup_port(netdev); |
2054 | rtnl_unlock(); | |
2055 | ||
9ee50e48 | 2056 | if (fcoe) { |
619fe4be RL |
2057 | ctlr = fcoe_to_ctlr(fcoe); |
2058 | fcoe_ctlr_link_down(ctlr); | |
2059 | fcoe_clean_pending_queue(ctlr->lp); | |
9ee50e48 | 2060 | } else |
55a66d3c VD |
2061 | rc = -ENODEV; |
2062 | ||
55a66d3c VD |
2063 | mutex_unlock(&fcoe_config_mutex); |
2064 | return rc; | |
2065 | } | |
2066 | ||
2067 | /** | |
2068 | * fcoe_enable() - Enables a FCoE interface | |
78a58246 | 2069 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 2070 | * |
78a58246 | 2071 | * Called from fcoe transport. |
55a66d3c VD |
2072 | * |
2073 | * Returns: 0 for success | |
2074 | */ | |
78a58246 | 2075 | static int fcoe_enable(struct net_device *netdev) |
55a66d3c | 2076 | { |
619fe4be | 2077 | struct fcoe_ctlr *ctlr; |
55a66d3c | 2078 | struct fcoe_interface *fcoe; |
55a66d3c VD |
2079 | int rc = 0; |
2080 | ||
2081 | mutex_lock(&fcoe_config_mutex); | |
ee5df628 | 2082 | rtnl_lock(); |
55a66d3c VD |
2083 | fcoe = fcoe_hostlist_lookup_port(netdev); |
2084 | rtnl_unlock(); | |
2085 | ||
619fe4be | 2086 | if (!fcoe) { |
55a66d3c | 2087 | rc = -ENODEV; |
619fe4be RL |
2088 | goto out; |
2089 | } | |
55a66d3c | 2090 | |
619fe4be RL |
2091 | ctlr = fcoe_to_ctlr(fcoe); |
2092 | ||
2093 | if (!fcoe_link_ok(ctlr->lp)) | |
2094 | fcoe_ctlr_link_up(ctlr); | |
2095 | ||
2096 | out: | |
55a66d3c VD |
2097 | mutex_unlock(&fcoe_config_mutex); |
2098 | return rc; | |
2099 | } | |
2100 | ||
85b4aa49 | 2101 | /** |
1875f27e | 2102 | * fcoe_destroy() - Destroy a FCoE interface |
78a58246 | 2103 | * @netdev : The net_device object the Ethernet interface to create on |
1875f27e | 2104 | * |
78a58246 | 2105 | * Called from fcoe transport |
85b4aa49 RL |
2106 | * |
2107 | * Returns: 0 for success | |
34f42a07 | 2108 | */ |
78a58246 | 2109 | static int fcoe_destroy(struct net_device *netdev) |
85b4aa49 | 2110 | { |
619fe4be | 2111 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2112 | struct fcoe_interface *fcoe; |
f04ca1b6 | 2113 | struct fc_lport *lport; |
b2085a4e | 2114 | struct fcoe_port *port; |
8eca355f | 2115 | int rc = 0; |
85b4aa49 | 2116 | |
dfc1d0fe | 2117 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2118 | rtnl_lock(); |
2e70e241 CL |
2119 | fcoe = fcoe_hostlist_lookup_port(netdev); |
2120 | if (!fcoe) { | |
85b4aa49 | 2121 | rc = -ENODEV; |
78a58246 | 2122 | goto out_nodev; |
85b4aa49 | 2123 | } |
619fe4be RL |
2124 | ctlr = fcoe_to_ctlr(fcoe); |
2125 | lport = ctlr->lp; | |
b2085a4e | 2126 | port = lport_priv(lport); |
54a5b21d | 2127 | list_del(&fcoe->list); |
b2085a4e | 2128 | queue_work(fcoe_wq, &port->destroy_work); |
85b4aa49 | 2129 | out_nodev: |
b2085a4e | 2130 | rtnl_unlock(); |
dfc1d0fe | 2131 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 RL |
2132 | return rc; |
2133 | } | |
2134 | ||
1875f27e RL |
2135 | /** |
2136 | * fcoe_destroy_work() - Destroy a FCoE port in a deferred work context | |
2137 | * @work: Handle to the FCoE port to be destroyed | |
2138 | */ | |
2e70e241 CL |
2139 | static void fcoe_destroy_work(struct work_struct *work) |
2140 | { | |
2141 | struct fcoe_port *port; | |
b2085a4e | 2142 | struct fcoe_interface *fcoe; |
2e70e241 CL |
2143 | |
2144 | port = container_of(work, struct fcoe_port, destroy_work); | |
2145 | mutex_lock(&fcoe_config_mutex); | |
b2085a4e | 2146 | |
b2085a4e | 2147 | fcoe = port->priv; |
2e70e241 | 2148 | fcoe_if_destroy(port->lport); |
ccefd23e | 2149 | fcoe_interface_cleanup(fcoe); |
b2085a4e | 2150 | |
2e70e241 CL |
2151 | mutex_unlock(&fcoe_config_mutex); |
2152 | } | |
2153 | ||
78a58246 YZ |
2154 | /** |
2155 | * fcoe_match() - Check if the FCoE is supported on the given netdevice | |
2156 | * @netdev : The net_device object the Ethernet interface to create on | |
2157 | * | |
2158 | * Called from fcoe transport. | |
2159 | * | |
2160 | * Returns: always returns true as this is the default FCoE transport, | |
2161 | * i.e., support all netdevs. | |
2162 | */ | |
2163 | static bool fcoe_match(struct net_device *netdev) | |
2164 | { | |
2165 | return true; | |
2166 | } | |
2167 | ||
6f6c2aa3 | 2168 | /** |
2169 | * fcoe_dcb_create() - Initialize DCB attributes and hooks | |
2170 | * @netdev: The net_device object of the L2 link that should be queried | |
2171 | * @port: The fcoe_port to bind FCoE APP priority with | |
2172 | * @ | |
2173 | */ | |
2174 | static void fcoe_dcb_create(struct fcoe_interface *fcoe) | |
2175 | { | |
2176 | #ifdef CONFIG_DCB | |
2177 | int dcbx; | |
2178 | u8 fup, up; | |
2179 | struct net_device *netdev = fcoe->realdev; | |
619fe4be RL |
2180 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
2181 | struct fcoe_port *port = lport_priv(ctlr->lp); | |
6f6c2aa3 | 2182 | struct dcb_app app = { |
2183 | .priority = 0, | |
2184 | .protocol = ETH_P_FCOE | |
2185 | }; | |
2186 | ||
2187 | /* setup DCB priority attributes. */ | |
2188 | if (netdev && netdev->dcbnl_ops && netdev->dcbnl_ops->getdcbx) { | |
2189 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
2190 | ||
2191 | if (dcbx & DCB_CAP_DCBX_VER_IEEE) { | |
2192 | app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE; | |
2193 | up = dcb_ieee_getapp_mask(netdev, &app); | |
2194 | app.protocol = ETH_P_FIP; | |
2195 | fup = dcb_ieee_getapp_mask(netdev, &app); | |
2196 | } else { | |
2197 | app.selector = DCB_APP_IDTYPE_ETHTYPE; | |
2198 | up = dcb_getapp(netdev, &app); | |
2199 | app.protocol = ETH_P_FIP; | |
2200 | fup = dcb_getapp(netdev, &app); | |
2201 | } | |
2202 | ||
2203 | port->priority = ffs(up) ? ffs(up) - 1 : 0; | |
619fe4be | 2204 | ctlr->priority = ffs(fup) ? ffs(fup) - 1 : port->priority; |
6f6c2aa3 | 2205 | } |
2206 | #endif | |
2207 | } | |
2208 | ||
85b4aa49 | 2209 | /** |
1875f27e | 2210 | * fcoe_create() - Create a fcoe interface |
78a58246 YZ |
2211 | * @netdev : The net_device object the Ethernet interface to create on |
2212 | * @fip_mode: The FIP mode for this creation | |
1875f27e | 2213 | * |
78a58246 | 2214 | * Called from fcoe transport |
85b4aa49 RL |
2215 | * |
2216 | * Returns: 0 for success | |
34f42a07 | 2217 | */ |
78a58246 | 2218 | static int fcoe_create(struct net_device *netdev, enum fip_state fip_mode) |
85b4aa49 | 2219 | { |
b2085a4e | 2220 | int rc = 0; |
8d55e507 | 2221 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 2222 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2223 | struct fcoe_interface *fcoe; |
af7f85d9 | 2224 | struct fc_lport *lport; |
85b4aa49 | 2225 | |
dfc1d0fe | 2226 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2227 | rtnl_lock(); |
34ce27bc | 2228 | |
85b4aa49 RL |
2229 | /* look for existing lport */ |
2230 | if (fcoe_hostlist_lookup(netdev)) { | |
2231 | rc = -EEXIST; | |
78a58246 | 2232 | goto out_nodev; |
85b4aa49 | 2233 | } |
85b4aa49 | 2234 | |
1dd454d9 | 2235 | fcoe = fcoe_interface_create(netdev, fip_mode); |
7287fb91 RL |
2236 | if (IS_ERR(fcoe)) { |
2237 | rc = PTR_ERR(fcoe); | |
78a58246 | 2238 | goto out_nodev; |
030f4e00 CL |
2239 | } |
2240 | ||
619fe4be | 2241 | ctlr = fcoe_to_ctlr(fcoe); |
8d55e507 RL |
2242 | ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); |
2243 | lport = fcoe_if_create(fcoe, &ctlr_dev->dev, 0); | |
af7f85d9 | 2244 | if (IS_ERR(lport)) { |
d5488eb9 | 2245 | printk(KERN_ERR "fcoe: Failed to create interface (%s)\n", |
85b4aa49 | 2246 | netdev->name); |
85b4aa49 | 2247 | rc = -EIO; |
848e7d5b | 2248 | rtnl_unlock(); |
2e70e241 | 2249 | fcoe_interface_cleanup(fcoe); |
848e7d5b | 2250 | goto out_nortnl; |
85b4aa49 | 2251 | } |
030f4e00 | 2252 | |
54b649f8 | 2253 | /* Make this the "master" N_Port */ |
619fe4be | 2254 | ctlr->lp = lport; |
54b649f8 | 2255 | |
6f6c2aa3 | 2256 | /* setup DCB priority attributes. */ |
2257 | fcoe_dcb_create(fcoe); | |
2258 | ||
c863df33 CL |
2259 | /* add to lports list */ |
2260 | fcoe_hostlist_add(lport); | |
2261 | ||
54b649f8 CL |
2262 | /* start FIP Discovery and FLOGI */ |
2263 | lport->boot_time = jiffies; | |
2264 | fc_fabric_login(lport); | |
22805123 RL |
2265 | if (!fcoe_link_ok(lport)) { |
2266 | rtnl_unlock(); | |
619fe4be | 2267 | fcoe_ctlr_link_up(ctlr); |
22805123 RL |
2268 | mutex_unlock(&fcoe_config_mutex); |
2269 | return rc; | |
2270 | } | |
030f4e00 | 2271 | |
85b4aa49 | 2272 | out_nodev: |
34ce27bc | 2273 | rtnl_unlock(); |
848e7d5b | 2274 | out_nortnl: |
dfc1d0fe | 2275 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 RL |
2276 | return rc; |
2277 | } | |
2278 | ||
34f42a07 | 2279 | /** |
5e4f8fe7 RL |
2280 | * fcoe_link_speed_update() - Update the supported and actual link speeds |
2281 | * @lport: The local port to update speeds for | |
85b4aa49 | 2282 | * |
5e4f8fe7 RL |
2283 | * Returns: 0 if the ethtool query was successful |
2284 | * -1 if the ethtool query failed | |
85b4aa49 | 2285 | */ |
7c9c6841 | 2286 | static int fcoe_link_speed_update(struct fc_lport *lport) |
85b4aa49 | 2287 | { |
8597ae8b | 2288 | struct net_device *netdev = fcoe_netdev(lport); |
8ae6daca | 2289 | struct ethtool_cmd ecmd; |
85b4aa49 | 2290 | |
4bc71cb9 | 2291 | if (!__ethtool_get_settings(netdev, &ecmd)) { |
1875f27e | 2292 | lport->link_supported_speeds &= |
2f718d64 YZ |
2293 | ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT); |
2294 | if (ecmd.supported & (SUPPORTED_1000baseT_Half | | |
2295 | SUPPORTED_1000baseT_Full)) | |
1875f27e | 2296 | lport->link_supported_speeds |= FC_PORTSPEED_1GBIT; |
2f718d64 | 2297 | if (ecmd.supported & SUPPORTED_10000baseT_Full) |
1875f27e | 2298 | lport->link_supported_speeds |= |
2f718d64 | 2299 | FC_PORTSPEED_10GBIT; |
8ae6daca DD |
2300 | switch (ethtool_cmd_speed(&ecmd)) { |
2301 | case SPEED_1000: | |
1875f27e | 2302 | lport->link_speed = FC_PORTSPEED_1GBIT; |
8ae6daca DD |
2303 | break; |
2304 | case SPEED_10000: | |
1875f27e | 2305 | lport->link_speed = FC_PORTSPEED_10GBIT; |
8ae6daca DD |
2306 | break; |
2307 | } | |
2f718d64 YZ |
2308 | return 0; |
2309 | } | |
2310 | return -1; | |
85b4aa49 | 2311 | } |
85b4aa49 | 2312 | |
5e4f8fe7 RL |
2313 | /** |
2314 | * fcoe_link_ok() - Check if the link is OK for a local port | |
2315 | * @lport: The local port to check link on | |
2316 | * | |
2317 | * Returns: 0 if link is UP and OK, -1 if not | |
2318 | * | |
2319 | */ | |
7c9c6841 | 2320 | static int fcoe_link_ok(struct fc_lport *lport) |
5e4f8fe7 | 2321 | { |
8597ae8b | 2322 | struct net_device *netdev = fcoe_netdev(lport); |
5e4f8fe7 RL |
2323 | |
2324 | if (netif_oper_up(netdev)) | |
2325 | return 0; | |
2326 | return -1; | |
2327 | } | |
2328 | ||
34f42a07 | 2329 | /** |
1875f27e RL |
2330 | * fcoe_percpu_clean() - Clear all pending skbs for an local port |
2331 | * @lport: The local port whose skbs are to be cleared | |
e7a51997 JE |
2332 | * |
2333 | * Must be called with fcoe_create_mutex held to single-thread completion. | |
2334 | * | |
2335 | * This flushes the pending skbs by adding a new skb to each queue and | |
2336 | * waiting until they are all freed. This assures us that not only are | |
2337 | * there no packets that will be handled by the lport, but also that any | |
2338 | * threads already handling packet have returned. | |
85b4aa49 | 2339 | */ |
7c9c6841 | 2340 | static void fcoe_percpu_clean(struct fc_lport *lport) |
85b4aa49 | 2341 | { |
85b4aa49 | 2342 | struct fcoe_percpu_s *pp; |
dd060e74 | 2343 | struct sk_buff *skb; |
5e5e92df | 2344 | unsigned int cpu; |
85b4aa49 | 2345 | |
5e5e92df RL |
2346 | for_each_possible_cpu(cpu) { |
2347 | pp = &per_cpu(fcoe_percpu, cpu); | |
e7a51997 | 2348 | |
dd060e74 | 2349 | if (!pp->thread || !cpu_online(cpu)) |
e7a51997 | 2350 | continue; |
e7a51997 JE |
2351 | |
2352 | skb = dev_alloc_skb(0); | |
b3b8abd8 | 2353 | if (!skb) |
e7a51997 | 2354 | continue; |
b3b8abd8 | 2355 | |
e7a51997 JE |
2356 | skb->destructor = fcoe_percpu_flush_done; |
2357 | ||
dd060e74 | 2358 | spin_lock_bh(&pp->fcoe_rx_list.lock); |
e7a51997 JE |
2359 | __skb_queue_tail(&pp->fcoe_rx_list, skb); |
2360 | if (pp->fcoe_rx_list.qlen == 1) | |
2361 | wake_up_process(pp->thread); | |
5e5e92df | 2362 | spin_unlock_bh(&pp->fcoe_rx_list.lock); |
e7a51997 JE |
2363 | |
2364 | wait_for_completion(&fcoe_flush_completion); | |
85b4aa49 RL |
2365 | } |
2366 | } | |
85b4aa49 | 2367 | |
34f42a07 | 2368 | /** |
1875f27e RL |
2369 | * fcoe_reset() - Reset a local port |
2370 | * @shost: The SCSI host associated with the local port to be reset | |
85b4aa49 | 2371 | * |
1875f27e | 2372 | * Returns: Always 0 (return value required by FC transport template) |
85b4aa49 | 2373 | */ |
7c9c6841 | 2374 | static int fcoe_reset(struct Scsi_Host *shost) |
85b4aa49 RL |
2375 | { |
2376 | struct fc_lport *lport = shost_priv(shost); | |
d2f80952 VD |
2377 | struct fcoe_port *port = lport_priv(lport); |
2378 | struct fcoe_interface *fcoe = port->priv; | |
619fe4be | 2379 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
d2f80952 | 2380 | |
619fe4be RL |
2381 | fcoe_ctlr_link_down(ctlr); |
2382 | fcoe_clean_pending_queue(ctlr->lp); | |
2383 | if (!fcoe_link_ok(ctlr->lp)) | |
2384 | fcoe_ctlr_link_up(ctlr); | |
85b4aa49 RL |
2385 | return 0; |
2386 | } | |
85b4aa49 | 2387 | |
34f42a07 | 2388 | /** |
1875f27e RL |
2389 | * fcoe_hostlist_lookup_port() - Find the FCoE interface associated with a net device |
2390 | * @netdev: The net device used as a key | |
85b4aa49 | 2391 | * |
1875f27e RL |
2392 | * Locking: Must be called with the RNL mutex held. |
2393 | * | |
2394 | * Returns: NULL or the FCoE interface | |
85b4aa49 | 2395 | */ |
014f5c3f | 2396 | static struct fcoe_interface * |
1875f27e | 2397 | fcoe_hostlist_lookup_port(const struct net_device *netdev) |
85b4aa49 | 2398 | { |
014f5c3f | 2399 | struct fcoe_interface *fcoe; |
85b4aa49 | 2400 | |
014f5c3f | 2401 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
1875f27e | 2402 | if (fcoe->netdev == netdev) |
014f5c3f | 2403 | return fcoe; |
85b4aa49 | 2404 | } |
85b4aa49 RL |
2405 | return NULL; |
2406 | } | |
2407 | ||
34f42a07 | 2408 | /** |
1875f27e RL |
2409 | * fcoe_hostlist_lookup() - Find the local port associated with a |
2410 | * given net device | |
2411 | * @netdev: The netdevice used as a key | |
85b4aa49 | 2412 | * |
1875f27e RL |
2413 | * Locking: Must be called with the RTNL mutex held |
2414 | * | |
2415 | * Returns: NULL or the local port | |
85b4aa49 | 2416 | */ |
090eb6c4 | 2417 | static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) |
85b4aa49 | 2418 | { |
619fe4be | 2419 | struct fcoe_ctlr *ctlr; |
014f5c3f | 2420 | struct fcoe_interface *fcoe; |
85b4aa49 | 2421 | |
014f5c3f | 2422 | fcoe = fcoe_hostlist_lookup_port(netdev); |
619fe4be RL |
2423 | ctlr = fcoe_to_ctlr(fcoe); |
2424 | return (fcoe) ? ctlr->lp : NULL; | |
85b4aa49 | 2425 | } |
85b4aa49 | 2426 | |
34f42a07 | 2427 | /** |
1875f27e RL |
2428 | * fcoe_hostlist_add() - Add the FCoE interface identified by a local |
2429 | * port to the hostlist | |
2430 | * @lport: The local port that identifies the FCoE interface to be added | |
85b4aa49 | 2431 | * |
090eb6c4 | 2432 | * Locking: must be called with the RTNL mutex held |
1875f27e RL |
2433 | * |
2434 | * Returns: 0 for success | |
85b4aa49 | 2435 | */ |
090eb6c4 | 2436 | static int fcoe_hostlist_add(const struct fc_lport *lport) |
85b4aa49 | 2437 | { |
014f5c3f CL |
2438 | struct fcoe_interface *fcoe; |
2439 | struct fcoe_port *port; | |
2440 | ||
2441 | fcoe = fcoe_hostlist_lookup_port(fcoe_netdev(lport)); | |
2442 | if (!fcoe) { | |
2443 | port = lport_priv(lport); | |
8597ae8b | 2444 | fcoe = port->priv; |
014f5c3f | 2445 | list_add_tail(&fcoe->list, &fcoe_hostlist); |
85b4aa49 RL |
2446 | } |
2447 | return 0; | |
2448 | } | |
85b4aa49 | 2449 | |
78a58246 YZ |
2450 | |
2451 | static struct fcoe_transport fcoe_sw_transport = { | |
2452 | .name = {FCOE_TRANSPORT_DEFAULT}, | |
2453 | .attached = false, | |
2454 | .list = LIST_HEAD_INIT(fcoe_sw_transport.list), | |
2455 | .match = fcoe_match, | |
2456 | .create = fcoe_create, | |
2457 | .destroy = fcoe_destroy, | |
2458 | .enable = fcoe_enable, | |
2459 | .disable = fcoe_disable, | |
2460 | }; | |
2461 | ||
85b4aa49 | 2462 | /** |
1875f27e | 2463 | * fcoe_init() - Initialize fcoe.ko |
85b4aa49 | 2464 | * |
1875f27e | 2465 | * Returns: 0 on success, or a negative value on failure |
34f42a07 | 2466 | */ |
85b4aa49 RL |
2467 | static int __init fcoe_init(void) |
2468 | { | |
1875f27e | 2469 | struct fcoe_percpu_s *p; |
38eccabd | 2470 | unsigned int cpu; |
8976f424 | 2471 | int rc = 0; |
85b4aa49 | 2472 | |
2ca32b48 TH |
2473 | fcoe_wq = alloc_workqueue("fcoe", 0, 0); |
2474 | if (!fcoe_wq) | |
2475 | return -ENOMEM; | |
2476 | ||
78a58246 YZ |
2477 | /* register as a fcoe transport */ |
2478 | rc = fcoe_transport_attach(&fcoe_sw_transport); | |
2479 | if (rc) { | |
2480 | printk(KERN_ERR "failed to register an fcoe transport, check " | |
2481 | "if libfcoe is loaded\n"); | |
2482 | return rc; | |
2483 | } | |
2484 | ||
dfc1d0fe CL |
2485 | mutex_lock(&fcoe_config_mutex); |
2486 | ||
38eccabd | 2487 | for_each_possible_cpu(cpu) { |
5e5e92df | 2488 | p = &per_cpu(fcoe_percpu, cpu); |
38eccabd RL |
2489 | skb_queue_head_init(&p->fcoe_rx_list); |
2490 | } | |
2491 | ||
8976f424 RL |
2492 | for_each_online_cpu(cpu) |
2493 | fcoe_percpu_thread_create(cpu); | |
85b4aa49 | 2494 | |
8976f424 RL |
2495 | /* Initialize per CPU interrupt thread */ |
2496 | rc = register_hotcpu_notifier(&fcoe_cpu_notifier); | |
2497 | if (rc) | |
2498 | goto out_free; | |
85b4aa49 | 2499 | |
8976f424 | 2500 | /* Setup link change notification */ |
85b4aa49 RL |
2501 | fcoe_dev_setup(); |
2502 | ||
5892c32f CL |
2503 | rc = fcoe_if_init(); |
2504 | if (rc) | |
2505 | goto out_free; | |
85b4aa49 | 2506 | |
dfc1d0fe | 2507 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 | 2508 | return 0; |
8976f424 RL |
2509 | |
2510 | out_free: | |
2511 | for_each_online_cpu(cpu) { | |
2512 | fcoe_percpu_thread_destroy(cpu); | |
2513 | } | |
dfc1d0fe | 2514 | mutex_unlock(&fcoe_config_mutex); |
2ca32b48 | 2515 | destroy_workqueue(fcoe_wq); |
8976f424 | 2516 | return rc; |
85b4aa49 RL |
2517 | } |
2518 | module_init(fcoe_init); | |
2519 | ||
2520 | /** | |
1875f27e | 2521 | * fcoe_exit() - Clean up fcoe.ko |
85b4aa49 | 2522 | * |
1875f27e | 2523 | * Returns: 0 on success or a negative value on failure |
34f42a07 | 2524 | */ |
85b4aa49 RL |
2525 | static void __exit fcoe_exit(void) |
2526 | { | |
014f5c3f | 2527 | struct fcoe_interface *fcoe, *tmp; |
619fe4be | 2528 | struct fcoe_ctlr *ctlr; |
2e70e241 | 2529 | struct fcoe_port *port; |
1875f27e | 2530 | unsigned int cpu; |
85b4aa49 | 2531 | |
dfc1d0fe CL |
2532 | mutex_lock(&fcoe_config_mutex); |
2533 | ||
85b4aa49 RL |
2534 | fcoe_dev_cleanup(); |
2535 | ||
5919a595 | 2536 | /* releases the associated fcoe hosts */ |
090eb6c4 CL |
2537 | rtnl_lock(); |
2538 | list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) { | |
c863df33 | 2539 | list_del(&fcoe->list); |
619fe4be RL |
2540 | ctlr = fcoe_to_ctlr(fcoe); |
2541 | port = lport_priv(ctlr->lp); | |
2ca32b48 | 2542 | queue_work(fcoe_wq, &port->destroy_work); |
c863df33 | 2543 | } |
090eb6c4 | 2544 | rtnl_unlock(); |
85b4aa49 | 2545 | |
8976f424 RL |
2546 | unregister_hotcpu_notifier(&fcoe_cpu_notifier); |
2547 | ||
014f5c3f | 2548 | for_each_online_cpu(cpu) |
8976f424 | 2549 | fcoe_percpu_thread_destroy(cpu); |
85b4aa49 | 2550 | |
dfc1d0fe | 2551 | mutex_unlock(&fcoe_config_mutex); |
2e70e241 | 2552 | |
2ca32b48 TH |
2553 | /* |
2554 | * destroy_work's may be chained but destroy_workqueue() | |
2555 | * can take care of them. Just kill the fcoe_wq. | |
2556 | */ | |
2557 | destroy_workqueue(fcoe_wq); | |
2e70e241 | 2558 | |
2ca32b48 TH |
2559 | /* |
2560 | * Detaching from the scsi transport must happen after all | |
2561 | * destroys are done on the fcoe_wq. destroy_workqueue will | |
2562 | * enusre the fcoe_wq is flushed. | |
2563 | */ | |
2e70e241 | 2564 | fcoe_if_exit(); |
78a58246 YZ |
2565 | |
2566 | /* detach from fcoe transport */ | |
2567 | fcoe_transport_detach(&fcoe_sw_transport); | |
85b4aa49 RL |
2568 | } |
2569 | module_exit(fcoe_exit); | |
11b56188 CL |
2570 | |
2571 | /** | |
2572 | * fcoe_flogi_resp() - FCoE specific FLOGI and FDISC response handler | |
2573 | * @seq: active sequence in the FLOGI or FDISC exchange | |
2574 | * @fp: response frame, or error encoded in a pointer (timeout) | |
2575 | * @arg: pointer the the fcoe_ctlr structure | |
2576 | * | |
65155b37 | 2577 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2578 | * the libfc FLOGI response handler. |
2579 | */ | |
2580 | static void fcoe_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2581 | { | |
2582 | struct fcoe_ctlr *fip = arg; | |
2583 | struct fc_exch *exch = fc_seq_exch(seq); | |
2584 | struct fc_lport *lport = exch->lp; | |
2585 | u8 *mac; | |
2586 | ||
2587 | if (IS_ERR(fp)) | |
2588 | goto done; | |
2589 | ||
2590 | mac = fr_cb(fp)->granted_mac; | |
907c07d4 VD |
2591 | /* pre-FIP */ |
2592 | if (is_zero_ether_addr(mac)) | |
2593 | fcoe_ctlr_recv_flogi(fip, lport, fp); | |
2594 | if (!is_zero_ether_addr(mac)) | |
2595 | fcoe_update_src_mac(lport, mac); | |
11b56188 CL |
2596 | done: |
2597 | fc_lport_flogi_resp(seq, fp, lport); | |
2598 | } | |
2599 | ||
2600 | /** | |
2601 | * fcoe_logo_resp() - FCoE specific LOGO response handler | |
2602 | * @seq: active sequence in the LOGO exchange | |
2603 | * @fp: response frame, or error encoded in a pointer (timeout) | |
2604 | * @arg: pointer the the fcoe_ctlr structure | |
2605 | * | |
65155b37 | 2606 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2607 | * the libfc LOGO response handler. |
2608 | */ | |
2609 | static void fcoe_logo_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2610 | { | |
386309ce | 2611 | struct fc_lport *lport = arg; |
11b56188 CL |
2612 | static u8 zero_mac[ETH_ALEN] = { 0 }; |
2613 | ||
2614 | if (!IS_ERR(fp)) | |
386309ce | 2615 | fcoe_update_src_mac(lport, zero_mac); |
11b56188 CL |
2616 | fc_lport_logo_resp(seq, fp, lport); |
2617 | } | |
2618 | ||
2619 | /** | |
2620 | * fcoe_elsct_send - FCoE specific ELS handler | |
2621 | * | |
2622 | * This does special case handling of FIP encapsualted ELS exchanges for FCoE, | |
2623 | * using FCoE specific response handlers and passing the FIP controller as | |
2624 | * the argument (the lport is still available from the exchange). | |
2625 | * | |
2626 | * Most of the work here is just handed off to the libfc routine. | |
2627 | */ | |
1875f27e RL |
2628 | static struct fc_seq *fcoe_elsct_send(struct fc_lport *lport, u32 did, |
2629 | struct fc_frame *fp, unsigned int op, | |
2630 | void (*resp)(struct fc_seq *, | |
2631 | struct fc_frame *, | |
2632 | void *), | |
2633 | void *arg, u32 timeout) | |
11b56188 CL |
2634 | { |
2635 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2636 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2637 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
11b56188 CL |
2638 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
2639 | ||
2640 | switch (op) { | |
2641 | case ELS_FLOGI: | |
2642 | case ELS_FDISC: | |
e10f8c66 JE |
2643 | if (lport->point_to_multipoint) |
2644 | break; | |
11b56188 CL |
2645 | return fc_elsct_send(lport, did, fp, op, fcoe_flogi_resp, |
2646 | fip, timeout); | |
2647 | case ELS_LOGO: | |
2648 | /* only hook onto fabric logouts, not port logouts */ | |
2649 | if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI) | |
2650 | break; | |
2651 | return fc_elsct_send(lport, did, fp, op, fcoe_logo_resp, | |
386309ce | 2652 | lport, timeout); |
11b56188 CL |
2653 | } |
2654 | return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); | |
2655 | } | |
2656 | ||
9a05753b CL |
2657 | /** |
2658 | * fcoe_vport_create() - create an fc_host/scsi_host for a vport | |
2659 | * @vport: fc_vport object to create a new fc_host for | |
2660 | * @disabled: start the new fc_host in a disabled state by default? | |
2661 | * | |
2662 | * Returns: 0 for success | |
2663 | */ | |
2664 | static int fcoe_vport_create(struct fc_vport *vport, bool disabled) | |
2665 | { | |
2666 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2667 | struct fc_lport *n_port = shost_priv(shost); | |
2668 | struct fcoe_port *port = lport_priv(n_port); | |
8597ae8b | 2669 | struct fcoe_interface *fcoe = port->priv; |
9a05753b CL |
2670 | struct net_device *netdev = fcoe->netdev; |
2671 | struct fc_lport *vn_port; | |
bdf25218 NP |
2672 | int rc; |
2673 | char buf[32]; | |
2674 | ||
2675 | rc = fcoe_validate_vport_create(vport); | |
2676 | if (rc) { | |
d834895c | 2677 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); |
bdf25218 NP |
2678 | printk(KERN_ERR "fcoe: Failed to create vport, " |
2679 | "WWPN (0x%s) already exists\n", | |
2680 | buf); | |
2681 | return rc; | |
2682 | } | |
9a05753b CL |
2683 | |
2684 | mutex_lock(&fcoe_config_mutex); | |
4bc71cb9 | 2685 | rtnl_lock(); |
9a05753b | 2686 | vn_port = fcoe_if_create(fcoe, &vport->dev, 1); |
4bc71cb9 | 2687 | rtnl_unlock(); |
9a05753b CL |
2688 | mutex_unlock(&fcoe_config_mutex); |
2689 | ||
2690 | if (IS_ERR(vn_port)) { | |
2691 | printk(KERN_ERR "fcoe: fcoe_vport_create(%s) failed\n", | |
2692 | netdev->name); | |
2693 | return -EIO; | |
2694 | } | |
2695 | ||
2696 | if (disabled) { | |
2697 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2698 | } else { | |
2699 | vn_port->boot_time = jiffies; | |
2700 | fc_fabric_login(vn_port); | |
2701 | fc_vport_setlink(vn_port); | |
2702 | } | |
2703 | return 0; | |
2704 | } | |
2705 | ||
2706 | /** | |
2707 | * fcoe_vport_destroy() - destroy the fc_host/scsi_host for a vport | |
2708 | * @vport: fc_vport object that is being destroyed | |
2709 | * | |
2710 | * Returns: 0 for success | |
2711 | */ | |
2712 | static int fcoe_vport_destroy(struct fc_vport *vport) | |
2713 | { | |
2714 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2715 | struct fc_lport *n_port = shost_priv(shost); | |
2716 | struct fc_lport *vn_port = vport->dd_data; | |
9a05753b CL |
2717 | |
2718 | mutex_lock(&n_port->lp_mutex); | |
2719 | list_del(&vn_port->list); | |
2720 | mutex_unlock(&n_port->lp_mutex); | |
ccefd23e RL |
2721 | |
2722 | mutex_lock(&fcoe_config_mutex); | |
2723 | fcoe_if_destroy(vn_port); | |
2724 | mutex_unlock(&fcoe_config_mutex); | |
2725 | ||
9a05753b CL |
2726 | return 0; |
2727 | } | |
2728 | ||
2729 | /** | |
2730 | * fcoe_vport_disable() - change vport state | |
2731 | * @vport: vport to bring online/offline | |
2732 | * @disable: should the vport be disabled? | |
2733 | */ | |
2734 | static int fcoe_vport_disable(struct fc_vport *vport, bool disable) | |
2735 | { | |
2736 | struct fc_lport *lport = vport->dd_data; | |
2737 | ||
2738 | if (disable) { | |
2739 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2740 | fc_fabric_logoff(lport); | |
2741 | } else { | |
2742 | lport->boot_time = jiffies; | |
2743 | fc_fabric_login(lport); | |
2744 | fc_vport_setlink(lport); | |
2745 | } | |
2746 | ||
2747 | return 0; | |
2748 | } | |
2749 | ||
dc8596d3 CL |
2750 | /** |
2751 | * fcoe_vport_set_symbolic_name() - append vport string to symbolic name | |
2752 | * @vport: fc_vport with a new symbolic name string | |
2753 | * | |
2754 | * After generating a new symbolic name string, a new RSPN_ID request is | |
2755 | * sent to the name server. There is no response handler, so if it fails | |
2756 | * for some reason it will not be retried. | |
2757 | */ | |
2758 | static void fcoe_set_vport_symbolic_name(struct fc_vport *vport) | |
2759 | { | |
2760 | struct fc_lport *lport = vport->dd_data; | |
2761 | struct fc_frame *fp; | |
2762 | size_t len; | |
2763 | ||
2764 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, | |
2765 | "%s v%s over %s : %s", FCOE_NAME, FCOE_VERSION, | |
2766 | fcoe_netdev(lport)->name, vport->symbolic_name); | |
2767 | ||
2768 | if (lport->state != LPORT_ST_READY) | |
2769 | return; | |
2770 | ||
2771 | len = strnlen(fc_host_symbolic_name(lport->host), 255); | |
2772 | fp = fc_frame_alloc(lport, | |
2773 | sizeof(struct fc_ct_hdr) + | |
2774 | sizeof(struct fc_ns_rspn) + len); | |
2775 | if (!fp) | |
2776 | return; | |
2777 | lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID, | |
b94f8951 | 2778 | NULL, NULL, 3 * lport->r_a_tov); |
dc8596d3 | 2779 | } |
b84056bf YZ |
2780 | |
2781 | /** | |
2782 | * fcoe_get_lesb() - Fill the FCoE Link Error Status Block | |
2783 | * @lport: the local port | |
2784 | * @fc_lesb: the link error status block | |
2785 | */ | |
2786 | static void fcoe_get_lesb(struct fc_lport *lport, | |
2787 | struct fc_els_lesb *fc_lesb) | |
2788 | { | |
b84056bf YZ |
2789 | struct net_device *netdev = fcoe_netdev(lport); |
2790 | ||
814740d5 | 2791 | __fcoe_get_lesb(lport, fc_lesb, netdev); |
b84056bf | 2792 | } |
7d65b0df | 2793 | |
8d55e507 RL |
2794 | static void fcoe_ctlr_get_lesb(struct fcoe_ctlr_device *ctlr_dev) |
2795 | { | |
2796 | struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr_dev); | |
2797 | struct net_device *netdev = fcoe_netdev(fip->lp); | |
2798 | struct fcoe_fc_els_lesb *fcoe_lesb; | |
2799 | struct fc_els_lesb fc_lesb; | |
2800 | ||
2801 | __fcoe_get_lesb(fip->lp, &fc_lesb, netdev); | |
2802 | fcoe_lesb = (struct fcoe_fc_els_lesb *)(&fc_lesb); | |
2803 | ||
2804 | ctlr_dev->lesb.lesb_link_fail = | |
2805 | ntohl(fcoe_lesb->lesb_link_fail); | |
2806 | ctlr_dev->lesb.lesb_vlink_fail = | |
2807 | ntohl(fcoe_lesb->lesb_vlink_fail); | |
2808 | ctlr_dev->lesb.lesb_miss_fka = | |
2809 | ntohl(fcoe_lesb->lesb_miss_fka); | |
2810 | ctlr_dev->lesb.lesb_symb_err = | |
2811 | ntohl(fcoe_lesb->lesb_symb_err); | |
2812 | ctlr_dev->lesb.lesb_err_block = | |
2813 | ntohl(fcoe_lesb->lesb_err_block); | |
2814 | ctlr_dev->lesb.lesb_fcs_error = | |
2815 | ntohl(fcoe_lesb->lesb_fcs_error); | |
2816 | } | |
2817 | ||
2818 | static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) | |
2819 | { | |
2820 | struct fcoe_ctlr_device *ctlr_dev = | |
2821 | fcoe_fcf_dev_to_ctlr_dev(fcf_dev); | |
2822 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); | |
2823 | struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr); | |
2824 | ||
2825 | fcf_dev->vlan_id = vlan_dev_vlan_id(fcoe->netdev); | |
2826 | } | |
2827 | ||
7d65b0df JE |
2828 | /** |
2829 | * fcoe_set_port_id() - Callback from libfc when Port_ID is set. | |
2830 | * @lport: the local port | |
2831 | * @port_id: the port ID | |
2832 | * @fp: the received frame, if any, that caused the port_id to be set. | |
2833 | * | |
2834 | * This routine handles the case where we received a FLOGI and are | |
2835 | * entering point-to-point mode. We need to call fcoe_ctlr_recv_flogi() | |
2836 | * so it can set the non-mapped mode and gateway address. | |
2837 | * | |
2838 | * The FLOGI LS_ACC is handled by fcoe_flogi_resp(). | |
2839 | */ | |
2840 | static void fcoe_set_port_id(struct fc_lport *lport, | |
2841 | u32 port_id, struct fc_frame *fp) | |
2842 | { | |
2843 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2844 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2845 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
7d65b0df JE |
2846 | |
2847 | if (fp && fc_frame_payload_op(fp) == ELS_FLOGI) | |
619fe4be | 2848 | fcoe_ctlr_recv_flogi(ctlr, lport, fp); |
7d65b0df | 2849 | } |