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1da177e4 LT |
1 | /* |
2 | * Authors: | |
3 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> | |
4 | * Uppsala University and | |
5 | * Swedish University of Agricultural Sciences | |
6 | * | |
7 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> | |
8 | * Ben Greear <greearb@candelatech.com> | |
96de0e25 | 9 | * Jens Låås <jens.laas@data.slu.se> |
1da177e4 LT |
10 | * |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * | |
16 | * | |
17 | * A tool for loading the network with preconfigurated packets. | |
4ec93edb | 18 | * The tool is implemented as a linux module. Parameters are output |
1da177e4 LT |
19 | * device, delay (to hard_xmit), number of packets, and whether |
20 | * to use multiple SKBs or just the same one. | |
21 | * pktgen uses the installed interface's output routine. | |
22 | * | |
23 | * Additional hacking by: | |
24 | * | |
25 | * Jens.Laas@data.slu.se | |
26 | * Improved by ANK. 010120. | |
27 | * Improved by ANK even more. 010212. | |
28 | * MAC address typo fixed. 010417 --ro | |
29 | * Integrated. 020301 --DaveM | |
30 | * Added multiskb option 020301 --DaveM | |
31 | * Scaling of results. 020417--sigurdur@linpro.no | |
32 | * Significant re-work of the module: | |
33 | * * Convert to threaded model to more efficiently be able to transmit | |
34 | * and receive on multiple interfaces at once. | |
35 | * * Converted many counters to __u64 to allow longer runs. | |
36 | * * Allow configuration of ranges, like min/max IP address, MACs, | |
37 | * and UDP-ports, for both source and destination, and can | |
38 | * set to use a random distribution or sequentially walk the range. | |
39 | * * Can now change most values after starting. | |
40 | * * Place 12-byte packet in UDP payload with magic number, | |
41 | * sequence number, and timestamp. | |
42 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and | |
43 | * latencies (with micro-second) precision. | |
44 | * * Add IOCTL interface to easily get counters & configuration. | |
45 | * --Ben Greear <greearb@candelatech.com> | |
46 | * | |
4ec93edb YH |
47 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
48 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 | |
1da177e4 | 49 | * as a "fastpath" with a configurable number of clones after alloc's. |
4ec93edb YH |
50 | * clone_skb=0 means all packets are allocated this also means ranges time |
51 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 | |
1da177e4 LT |
52 | * clones. |
53 | * | |
4ec93edb | 54 | * Also moved to /proc/net/pktgen/ |
1da177e4 LT |
55 | * --ro |
56 | * | |
57 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever | |
58 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. | |
59 | * --Ben Greear <greearb@candelatech.com> | |
60 | * | |
61 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) | |
62 | * | |
4ec93edb | 63 | * |
1da177e4 LT |
64 | * 021124 Finished major redesign and rewrite for new functionality. |
65 | * See Documentation/networking/pktgen.txt for how to use this. | |
66 | * | |
67 | * The new operation: | |
4ec93edb YH |
68 | * For each CPU one thread/process is created at start. This process checks |
69 | * for running devices in the if_list and sends packets until count is 0 it | |
70 | * also the thread checks the thread->control which is used for inter-process | |
71 | * communication. controlling process "posts" operations to the threads this | |
8788370a JDB |
72 | * way. |
73 | * The if_list is RCU protected, and the if_lock remains to protect updating | |
74 | * of if_list, from "add_device" as it invoked from userspace (via proc write). | |
1da177e4 | 75 | * |
4ec93edb YH |
76 | * By design there should only be *one* "controlling" process. In practice |
77 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 78 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 79 | * For practical use this should be no problem. |
1da177e4 | 80 | * |
4ec93edb YH |
81 | * Note when adding devices to a specific CPU there good idea to also assign |
82 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
83 | * --ro |
84 | * | |
4ec93edb | 85 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
86 | * memleak 030710- KJP |
87 | * | |
88 | * First "ranges" functionality for ipv6 030726 --ro | |
89 | * | |
90 | * Included flow support. 030802 ANK. | |
91 | * | |
92 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 93 | * |
1da177e4 LT |
94 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
95 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
96 | * | |
4ec93edb | 97 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
98 | * <shemminger@osdl.org> 040923 |
99 | * | |
ca9f1fd2 | 100 | * Randy Dunlap fixed u64 printk compiler warning |
1da177e4 LT |
101 | * |
102 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
103 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
104 | * | |
4ec93edb | 105 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
106 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
107 | * | |
4ec93edb | 108 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 109 | * 050103 |
ca6549af SW |
110 | * |
111 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
112 | * | |
34954ddc FF |
113 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
114 | * | |
ce5d0b47 AR |
115 | * Fixed src_mac command to set source mac of packet to value specified in |
116 | * command by Adit Ranadive <adit.262@gmail.com> | |
117 | * | |
1da177e4 | 118 | */ |
f9467eae JP |
119 | |
120 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
121 | ||
1da177e4 LT |
122 | #include <linux/sys.h> |
123 | #include <linux/types.h> | |
124 | #include <linux/module.h> | |
125 | #include <linux/moduleparam.h> | |
126 | #include <linux/kernel.h> | |
222fa076 | 127 | #include <linux/mutex.h> |
1da177e4 LT |
128 | #include <linux/sched.h> |
129 | #include <linux/slab.h> | |
130 | #include <linux/vmalloc.h> | |
1da177e4 LT |
131 | #include <linux/unistd.h> |
132 | #include <linux/string.h> | |
133 | #include <linux/ptrace.h> | |
134 | #include <linux/errno.h> | |
135 | #include <linux/ioport.h> | |
136 | #include <linux/interrupt.h> | |
4fc268d2 | 137 | #include <linux/capability.h> |
2bc481cf | 138 | #include <linux/hrtimer.h> |
09fe3ef4 | 139 | #include <linux/freezer.h> |
1da177e4 LT |
140 | #include <linux/delay.h> |
141 | #include <linux/timer.h> | |
cdcdbe0b | 142 | #include <linux/list.h> |
1da177e4 LT |
143 | #include <linux/init.h> |
144 | #include <linux/skbuff.h> | |
145 | #include <linux/netdevice.h> | |
146 | #include <linux/inet.h> | |
147 | #include <linux/inetdevice.h> | |
148 | #include <linux/rtnetlink.h> | |
149 | #include <linux/if_arp.h> | |
34954ddc | 150 | #include <linux/if_vlan.h> |
1da177e4 LT |
151 | #include <linux/in.h> |
152 | #include <linux/ip.h> | |
153 | #include <linux/ipv6.h> | |
154 | #include <linux/udp.h> | |
155 | #include <linux/proc_fs.h> | |
d50a6b56 | 156 | #include <linux/seq_file.h> |
1da177e4 | 157 | #include <linux/wait.h> |
f404e9a6 | 158 | #include <linux/etherdevice.h> |
ee74baa7 | 159 | #include <linux/kthread.h> |
268bb0ce | 160 | #include <linux/prefetch.h> |
457c4cbc | 161 | #include <net/net_namespace.h> |
1da177e4 LT |
162 | #include <net/checksum.h> |
163 | #include <net/ipv6.h> | |
c26bf4a5 | 164 | #include <net/udp.h> |
73d94e94 | 165 | #include <net/ip6_checksum.h> |
1da177e4 | 166 | #include <net/addrconf.h> |
a553e4a6 JHS |
167 | #ifdef CONFIG_XFRM |
168 | #include <net/xfrm.h> | |
169 | #endif | |
4e58a027 | 170 | #include <net/netns/generic.h> |
1da177e4 LT |
171 | #include <asm/byteorder.h> |
172 | #include <linux/rcupdate.h> | |
1977f032 | 173 | #include <linux/bitops.h> |
63adc6fb SH |
174 | #include <linux/io.h> |
175 | #include <linux/timex.h> | |
176 | #include <linux/uaccess.h> | |
1da177e4 | 177 | #include <asm/dma.h> |
222f1806 | 178 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 179 | |
40207264 | 180 | #define VERSION "2.75" |
1da177e4 | 181 | #define IP_NAME_SZ 32 |
ca6549af | 182 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 183 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 184 | |
f9467eae JP |
185 | #define func_enter() pr_debug("entering %s\n", __func__); |
186 | ||
1da177e4 | 187 | /* Device flag bits */ |
222f1806 LC |
188 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
189 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
190 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
191 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
192 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
193 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
194 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
195 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 196 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
197 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
198 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 199 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 200 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 201 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 202 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 203 | #define F_NODE (1<<15) /* Node memory alloc*/ |
c26bf4a5 | 204 | #define F_UDPCSUM (1<<16) /* Include UDP checksum */ |
afb84b62 | 205 | #define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */ |
1da177e4 LT |
206 | |
207 | /* Thread control flag bits */ | |
6b80d6a6 SH |
208 | #define T_STOP (1<<0) /* Stop run */ |
209 | #define T_RUN (1<<1) /* Start run */ | |
210 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
211 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 212 | |
62f64aed AS |
213 | /* Xmit modes */ |
214 | #define M_START_XMIT 0 /* Default normal TX */ | |
215 | #define M_NETIF_RECEIVE 1 /* Inject packets into stack */ | |
216 | ||
8788370a | 217 | /* If lock -- protects updating of if_list */ |
1da177e4 LT |
218 | #define if_lock(t) spin_lock(&(t->if_lock)); |
219 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
220 | ||
221 | /* Used to help with determining the pkts on receive */ | |
222 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
223 | #define PG_PROC_DIR "pktgen" |
224 | #define PGCTRL "pgctrl" | |
1da177e4 LT |
225 | |
226 | #define MAX_CFLOWS 65536 | |
227 | ||
34954ddc FF |
228 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
229 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
230 | ||
222f1806 | 231 | struct flow_state { |
252e3346 | 232 | __be32 cur_daddr; |
222f1806 | 233 | int count; |
a553e4a6 JHS |
234 | #ifdef CONFIG_XFRM |
235 | struct xfrm_state *x; | |
236 | #endif | |
007a531b | 237 | __u32 flags; |
1da177e4 LT |
238 | }; |
239 | ||
007a531b JHS |
240 | /* flow flag bits */ |
241 | #define F_INIT (1<<0) /* flow has been initialized */ | |
242 | ||
1da177e4 | 243 | struct pktgen_dev { |
1da177e4 LT |
244 | /* |
245 | * Try to keep frequent/infrequent used vars. separated. | |
246 | */ | |
39df232f SH |
247 | struct proc_dir_entry *entry; /* proc file */ |
248 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 249 | struct list_head list; /* chaining in the thread's run-queue */ |
8788370a | 250 | struct rcu_head rcu; /* freed by RCU */ |
1da177e4 | 251 | |
63adc6fb | 252 | int running; /* if false, the test will stop */ |
1da177e4 | 253 | |
222f1806 LC |
254 | /* If min != max, then we will either do a linear iteration, or |
255 | * we will do a random selection from within the range. | |
256 | */ | |
257 | __u32 flags; | |
62f64aed | 258 | int xmit_mode; |
68bf9f0b AW |
259 | int min_pkt_size; |
260 | int max_pkt_size; | |
16dab72f | 261 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 262 | int nfrags; |
62f64aed AS |
263 | int removal_mark; /* non-zero => the device is marked for |
264 | * removal by worker thread */ | |
265 | ||
26ad7879 | 266 | struct page *page; |
fd29cf72 SH |
267 | u64 delay; /* nano-seconds */ |
268 | ||
222f1806 LC |
269 | __u64 count; /* Default No packets to send */ |
270 | __u64 sofar; /* How many pkts we've sent so far */ | |
271 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 272 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
273 | |
274 | /* runtime counters relating to clone_skb */ | |
222f1806 | 275 | |
222f1806 LC |
276 | __u32 clone_count; |
277 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
278 | * Or a failed transmit of some sort? |
279 | * This will keep sequence numbers in order | |
222f1806 | 280 | */ |
fd29cf72 SH |
281 | ktime_t next_tx; |
282 | ktime_t started_at; | |
283 | ktime_t stopped_at; | |
284 | u64 idle_acc; /* nano-seconds */ | |
285 | ||
222f1806 LC |
286 | __u32 seq_num; |
287 | ||
63adc6fb SH |
288 | int clone_skb; /* |
289 | * Use multiple SKBs during packet gen. | |
290 | * If this number is greater than 1, then | |
291 | * that many copies of the same packet will be | |
292 | * sent before a new packet is allocated. | |
293 | * If you want to send 1024 identical packets | |
294 | * before creating a new packet, | |
295 | * set clone_skb to 1024. | |
222f1806 LC |
296 | */ |
297 | ||
298 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
299 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
300 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
301 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
302 | ||
303 | struct in6_addr in6_saddr; | |
304 | struct in6_addr in6_daddr; | |
305 | struct in6_addr cur_in6_daddr; | |
306 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 307 | /* For ranges */ |
222f1806 LC |
308 | struct in6_addr min_in6_daddr; |
309 | struct in6_addr max_in6_daddr; | |
310 | struct in6_addr min_in6_saddr; | |
311 | struct in6_addr max_in6_saddr; | |
312 | ||
313 | /* If we're doing ranges, random or incremental, then this | |
314 | * defines the min/max for those ranges. | |
315 | */ | |
252e3346 AV |
316 | __be32 saddr_min; /* inclusive, source IP address */ |
317 | __be32 saddr_max; /* exclusive, source IP address */ | |
318 | __be32 daddr_min; /* inclusive, dest IP address */ | |
319 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
320 | |
321 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
322 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
323 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
324 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
325 | ||
1ca7768c | 326 | /* DSCP + ECN */ |
63adc6fb SH |
327 | __u8 tos; /* six MSB of (former) IPv4 TOS |
328 | are for dscp codepoint */ | |
329 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
330 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 331 | |
ca6549af | 332 | /* MPLS */ |
95c96174 | 333 | unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */ |
ca6549af SW |
334 | __be32 labels[MAX_MPLS_LABELS]; |
335 | ||
34954ddc FF |
336 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
337 | __u8 vlan_p; | |
338 | __u8 vlan_cfi; | |
339 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
340 | ||
341 | __u8 svlan_p; | |
342 | __u8 svlan_cfi; | |
343 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
344 | ||
222f1806 LC |
345 | __u32 src_mac_count; /* How many MACs to iterate through */ |
346 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
347 | ||
348 | unsigned char dst_mac[ETH_ALEN]; | |
349 | unsigned char src_mac[ETH_ALEN]; | |
350 | ||
351 | __u32 cur_dst_mac_offset; | |
352 | __u32 cur_src_mac_offset; | |
252e3346 AV |
353 | __be32 cur_saddr; |
354 | __be32 cur_daddr; | |
66ed1e5e | 355 | __u16 ip_id; |
222f1806 LC |
356 | __u16 cur_udp_dst; |
357 | __u16 cur_udp_src; | |
45b270f8 | 358 | __u16 cur_queue_map; |
222f1806 | 359 | __u32 cur_pkt_size; |
baac8564 | 360 | __u32 last_pkt_size; |
222f1806 LC |
361 | |
362 | __u8 hh[14]; | |
363 | /* = { | |
364 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
365 | ||
366 | We fill in SRC address later | |
367 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
368 | 0x08, 0x00 | |
369 | }; | |
370 | */ | |
371 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
372 | ||
63adc6fb | 373 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
374 | * are transmitting the same one multiple times |
375 | */ | |
63adc6fb SH |
376 | struct net_device *odev; /* The out-going device. |
377 | * Note that the device should have it's | |
378 | * pg_info pointer pointing back to this | |
379 | * device. | |
380 | * Set when the user specifies the out-going | |
381 | * device name (not when the inject is | |
382 | * started as it used to do.) | |
383 | */ | |
593f63b0 | 384 | char odevname[32]; |
1da177e4 | 385 | struct flow_state *flows; |
95c96174 ED |
386 | unsigned int cflows; /* Concurrent flows (config) */ |
387 | unsigned int lflow; /* Flow length (config) */ | |
388 | unsigned int nflows; /* accumulated flows (stats) */ | |
389 | unsigned int curfl; /* current sequenced flow (state)*/ | |
45b270f8 RO |
390 | |
391 | u16 queue_map_min; | |
392 | u16 queue_map_max; | |
9e50e3ac | 393 | __u32 skb_priority; /* skb priority field */ |
38b2cf29 | 394 | unsigned int burst; /* number of duplicated packets to burst */ |
e99b99b4 | 395 | int node; /* Memory node */ |
45b270f8 | 396 | |
a553e4a6 JHS |
397 | #ifdef CONFIG_XFRM |
398 | __u8 ipsmode; /* IPSEC mode (config) */ | |
399 | __u8 ipsproto; /* IPSEC type (config) */ | |
de4aee7d | 400 | __u32 spi; |
cf93d47e FD |
401 | struct dst_entry dst; |
402 | struct dst_ops dstops; | |
a553e4a6 | 403 | #endif |
39df232f | 404 | char result[512]; |
1da177e4 LT |
405 | }; |
406 | ||
407 | struct pktgen_hdr { | |
252e3346 AV |
408 | __be32 pgh_magic; |
409 | __be32 seq_num; | |
410 | __be32 tv_sec; | |
411 | __be32 tv_usec; | |
1da177e4 LT |
412 | }; |
413 | ||
4e58a027 CW |
414 | |
415 | static int pg_net_id __read_mostly; | |
416 | ||
417 | struct pktgen_net { | |
418 | struct net *net; | |
419 | struct proc_dir_entry *proc_dir; | |
420 | struct list_head pktgen_threads; | |
421 | bool pktgen_exiting; | |
422 | }; | |
551eaff1 | 423 | |
1da177e4 | 424 | struct pktgen_thread { |
63adc6fb | 425 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 426 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 427 | struct list_head th_list; |
ee74baa7 | 428 | struct task_struct *tsk; |
222f1806 | 429 | char result[512]; |
222f1806 | 430 | |
63adc6fb SH |
431 | /* Field for thread to receive "posted" events terminate, |
432 | stop ifs etc. */ | |
222f1806 LC |
433 | |
434 | u32 control; | |
1da177e4 LT |
435 | int cpu; |
436 | ||
222f1806 | 437 | wait_queue_head_t queue; |
d3ede327 | 438 | struct completion start_done; |
4e58a027 | 439 | struct pktgen_net *net; |
1da177e4 LT |
440 | }; |
441 | ||
442 | #define REMOVE 1 | |
443 | #define FIND 0 | |
444 | ||
c3d2f52d | 445 | static const char version[] = |
f9467eae JP |
446 | "Packet Generator for packet performance testing. " |
447 | "Version: " VERSION "\n"; | |
1da177e4 | 448 | |
222f1806 LC |
449 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
450 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
451 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 452 | const char *ifname, bool exact); |
1da177e4 | 453 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
4e58a027 CW |
454 | static void pktgen_run_all_threads(struct pktgen_net *pn); |
455 | static void pktgen_reset_all_threads(struct pktgen_net *pn); | |
456 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn); | |
3bda06a3 | 457 | |
222f1806 | 458 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 459 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 460 | |
1da177e4 | 461 | /* Module parameters, defaults. */ |
65c5b786 SH |
462 | static int pg_count_d __read_mostly = 1000; |
463 | static int pg_delay_d __read_mostly; | |
464 | static int pg_clone_skb_d __read_mostly; | |
465 | static int debug __read_mostly; | |
1da177e4 | 466 | |
222fa076 | 467 | static DEFINE_MUTEX(pktgen_thread_lock); |
1da177e4 | 468 | |
1da177e4 LT |
469 | static struct notifier_block pktgen_notifier_block = { |
470 | .notifier_call = pktgen_device_event, | |
471 | }; | |
472 | ||
1da177e4 | 473 | /* |
4ec93edb | 474 | * /proc handling functions |
1da177e4 LT |
475 | * |
476 | */ | |
477 | ||
d50a6b56 | 478 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 479 | { |
c3d2f52d | 480 | seq_puts(seq, version); |
d50a6b56 | 481 | return 0; |
1da177e4 LT |
482 | } |
483 | ||
63adc6fb SH |
484 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
485 | size_t count, loff_t *ppos) | |
1da177e4 | 486 | { |
d50a6b56 | 487 | char data[128]; |
4e58a027 | 488 | struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id); |
1da177e4 | 489 | |
09455747 MK |
490 | if (!capable(CAP_NET_ADMIN)) |
491 | return -EPERM; | |
1da177e4 | 492 | |
20b0c718 MK |
493 | if (count == 0) |
494 | return -EINVAL; | |
495 | ||
d50a6b56 SH |
496 | if (count > sizeof(data)) |
497 | count = sizeof(data); | |
1da177e4 | 498 | |
09455747 MK |
499 | if (copy_from_user(data, buf, count)) |
500 | return -EFAULT; | |
501 | ||
20b0c718 | 502 | data[count - 1] = 0; /* Strip trailing '\n' and terminate string */ |
1da177e4 | 503 | |
222f1806 | 504 | if (!strcmp(data, "stop")) |
4e58a027 | 505 | pktgen_stop_all_threads_ifs(pn); |
1da177e4 | 506 | |
222f1806 | 507 | else if (!strcmp(data, "start")) |
4e58a027 | 508 | pktgen_run_all_threads(pn); |
1da177e4 | 509 | |
eb37b41c | 510 | else if (!strcmp(data, "reset")) |
4e58a027 | 511 | pktgen_reset_all_threads(pn); |
eb37b41c | 512 | |
222f1806 | 513 | else |
40207264 | 514 | return -EINVAL; |
1da177e4 | 515 | |
09455747 | 516 | return count; |
1da177e4 LT |
517 | } |
518 | ||
d50a6b56 SH |
519 | static int pgctrl_open(struct inode *inode, struct file *file) |
520 | { | |
d9dda78b | 521 | return single_open(file, pgctrl_show, PDE_DATA(inode)); |
d50a6b56 SH |
522 | } |
523 | ||
9a32144e | 524 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
525 | .owner = THIS_MODULE, |
526 | .open = pgctrl_open, | |
527 | .read = seq_read, | |
528 | .llseek = seq_lseek, | |
529 | .write = pgctrl_write, | |
530 | .release = single_release, | |
d50a6b56 SH |
531 | }; |
532 | ||
533 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 534 | { |
648fda74 | 535 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
536 | ktime_t stopped; |
537 | u64 idle; | |
222f1806 LC |
538 | |
539 | seq_printf(seq, | |
540 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
541 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
542 | pkt_dev->max_pkt_size); | |
543 | ||
544 | seq_printf(seq, | |
fd29cf72 SH |
545 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
546 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 547 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
548 | |
549 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
550 | pkt_dev->lflow); | |
551 | ||
45b270f8 RO |
552 | seq_printf(seq, |
553 | " queue_map_min: %u queue_map_max: %u\n", | |
554 | pkt_dev->queue_map_min, | |
555 | pkt_dev->queue_map_max); | |
556 | ||
9e50e3ac JF |
557 | if (pkt_dev->skb_priority) |
558 | seq_printf(seq, " skb_priority: %u\n", | |
559 | pkt_dev->skb_priority); | |
560 | ||
222f1806 | 561 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 562 | seq_printf(seq, |
47a0200d AD |
563 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
564 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
565 | &pkt_dev->in6_saddr, | |
566 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
567 | &pkt_dev->in6_daddr, | |
568 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
569 | } else { |
570 | seq_printf(seq, | |
571 | " dst_min: %s dst_max: %s\n", | |
572 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 573 | seq_printf(seq, |
d079abd1 | 574 | " src_min: %s src_max: %s\n", |
63adc6fb SH |
575 | pkt_dev->src_min, pkt_dev->src_max); |
576 | } | |
1da177e4 | 577 | |
222f1806 | 578 | seq_puts(seq, " src_mac: "); |
1da177e4 | 579 | |
e174961c JB |
580 | seq_printf(seq, "%pM ", |
581 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
582 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 | 583 | |
97dc48e2 | 584 | seq_puts(seq, "dst_mac: "); |
e174961c | 585 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
586 | |
587 | seq_printf(seq, | |
63adc6fb SH |
588 | " udp_src_min: %d udp_src_max: %d" |
589 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
590 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
591 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
592 | ||
593 | seq_printf(seq, | |
ca6549af | 594 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 595 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 596 | |
ca6549af | 597 | if (pkt_dev->nr_labels) { |
95c96174 | 598 | unsigned int i; |
97dc48e2 | 599 | seq_puts(seq, " mpls: "); |
e71a4783 | 600 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
601 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
602 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
603 | } | |
604 | ||
63adc6fb | 605 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 606 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
607 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
608 | pkt_dev->vlan_cfi); | |
34954ddc | 609 | |
63adc6fb | 610 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 611 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
612 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
613 | pkt_dev->svlan_cfi); | |
34954ddc | 614 | |
63adc6fb | 615 | if (pkt_dev->tos) |
1ca7768c | 616 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 617 | |
63adc6fb | 618 | if (pkt_dev->traffic_class) |
1ca7768c | 619 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 620 | |
38b2cf29 AS |
621 | if (pkt_dev->burst > 1) |
622 | seq_printf(seq, " burst: %d\n", pkt_dev->burst); | |
623 | ||
e99b99b4 RO |
624 | if (pkt_dev->node >= 0) |
625 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
626 | ||
62f64aed AS |
627 | if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) |
628 | seq_puts(seq, " xmit_mode: netif_receive\n"); | |
629 | ||
97dc48e2 | 630 | seq_puts(seq, " Flags: "); |
ca6549af | 631 | |
222f1806 | 632 | if (pkt_dev->flags & F_IPV6) |
97dc48e2 | 633 | seq_puts(seq, "IPV6 "); |
1da177e4 | 634 | |
222f1806 | 635 | if (pkt_dev->flags & F_IPSRC_RND) |
97dc48e2 | 636 | seq_puts(seq, "IPSRC_RND "); |
1da177e4 | 637 | |
222f1806 | 638 | if (pkt_dev->flags & F_IPDST_RND) |
97dc48e2 | 639 | seq_puts(seq, "IPDST_RND "); |
1da177e4 | 640 | |
222f1806 | 641 | if (pkt_dev->flags & F_TXSIZE_RND) |
97dc48e2 | 642 | seq_puts(seq, "TXSIZE_RND "); |
1da177e4 | 643 | |
222f1806 | 644 | if (pkt_dev->flags & F_UDPSRC_RND) |
97dc48e2 | 645 | seq_puts(seq, "UDPSRC_RND "); |
1da177e4 | 646 | |
222f1806 | 647 | if (pkt_dev->flags & F_UDPDST_RND) |
97dc48e2 | 648 | seq_puts(seq, "UDPDST_RND "); |
1da177e4 | 649 | |
c26bf4a5 | 650 | if (pkt_dev->flags & F_UDPCSUM) |
97dc48e2 | 651 | seq_puts(seq, "UDPCSUM "); |
c26bf4a5 | 652 | |
afb84b62 JDB |
653 | if (pkt_dev->flags & F_NO_TIMESTAMP) |
654 | seq_puts(seq, "NO_TIMESTAMP "); | |
655 | ||
ca6549af | 656 | if (pkt_dev->flags & F_MPLS_RND) |
97dc48e2 | 657 | seq_puts(seq, "MPLS_RND "); |
ca6549af | 658 | |
45b270f8 | 659 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
97dc48e2 | 660 | seq_puts(seq, "QUEUE_MAP_RND "); |
45b270f8 | 661 | |
e6fce5b9 | 662 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
97dc48e2 | 663 | seq_puts(seq, "QUEUE_MAP_CPU "); |
e6fce5b9 | 664 | |
007a531b JHS |
665 | if (pkt_dev->cflows) { |
666 | if (pkt_dev->flags & F_FLOW_SEQ) | |
97dc48e2 | 667 | seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/ |
007a531b | 668 | else |
97dc48e2 | 669 | seq_puts(seq, "FLOW_RND "); |
007a531b JHS |
670 | } |
671 | ||
a553e4a6 | 672 | #ifdef CONFIG_XFRM |
8101328b | 673 | if (pkt_dev->flags & F_IPSEC_ON) { |
97dc48e2 | 674 | seq_puts(seq, "IPSEC "); |
8101328b FD |
675 | if (pkt_dev->spi) |
676 | seq_printf(seq, "spi:%u", pkt_dev->spi); | |
677 | } | |
a553e4a6 JHS |
678 | #endif |
679 | ||
222f1806 | 680 | if (pkt_dev->flags & F_MACSRC_RND) |
97dc48e2 | 681 | seq_puts(seq, "MACSRC_RND "); |
1da177e4 | 682 | |
222f1806 | 683 | if (pkt_dev->flags & F_MACDST_RND) |
97dc48e2 | 684 | seq_puts(seq, "MACDST_RND "); |
1da177e4 | 685 | |
34954ddc | 686 | if (pkt_dev->flags & F_VID_RND) |
97dc48e2 | 687 | seq_puts(seq, "VID_RND "); |
34954ddc FF |
688 | |
689 | if (pkt_dev->flags & F_SVID_RND) | |
97dc48e2 | 690 | seq_puts(seq, "SVID_RND "); |
34954ddc | 691 | |
e99b99b4 | 692 | if (pkt_dev->flags & F_NODE) |
97dc48e2 | 693 | seq_puts(seq, "NODE_ALLOC "); |
e99b99b4 | 694 | |
222f1806 LC |
695 | seq_puts(seq, "\n"); |
696 | ||
fd29cf72 | 697 | /* not really stopped, more like last-running-at */ |
398f382c | 698 | stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at; |
fd29cf72 SH |
699 | idle = pkt_dev->idle_acc; |
700 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 701 | |
222f1806 | 702 | seq_printf(seq, |
fd29cf72 | 703 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 704 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
705 | (unsigned long long)pkt_dev->errors); |
706 | ||
707 | seq_printf(seq, | |
708 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
709 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
710 | (unsigned long long) ktime_to_us(stopped), | |
711 | (unsigned long long) idle); | |
1da177e4 | 712 | |
222f1806 LC |
713 | seq_printf(seq, |
714 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
715 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
716 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 717 | |
222f1806 | 718 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
719 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
720 | &pkt_dev->cur_in6_saddr, | |
721 | &pkt_dev->cur_in6_daddr); | |
222f1806 | 722 | } else |
0373a946 AW |
723 | seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n", |
724 | &pkt_dev->cur_saddr, &pkt_dev->cur_daddr); | |
1da177e4 | 725 | |
222f1806 | 726 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 727 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 728 | |
45b270f8 RO |
729 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
730 | ||
222f1806 | 731 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
732 | |
733 | if (pkt_dev->result[0]) | |
222f1806 | 734 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 735 | else |
97dc48e2 | 736 | seq_puts(seq, "Result: Idle\n"); |
1da177e4 | 737 | |
d50a6b56 | 738 | return 0; |
1da177e4 LT |
739 | } |
740 | ||
ca6549af | 741 | |
63adc6fb SH |
742 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
743 | __u32 *num) | |
ca6549af SW |
744 | { |
745 | int i = 0; | |
746 | *num = 0; | |
747 | ||
e71a4783 | 748 | for (; i < maxlen; i++) { |
82fd5b5d | 749 | int value; |
ca6549af SW |
750 | char c; |
751 | *num <<= 4; | |
752 | if (get_user(c, &user_buffer[i])) | |
753 | return -EFAULT; | |
82fd5b5d AS |
754 | value = hex_to_bin(c); |
755 | if (value >= 0) | |
756 | *num |= value; | |
ca6549af SW |
757 | else |
758 | break; | |
759 | } | |
760 | return i; | |
761 | } | |
762 | ||
222f1806 LC |
763 | static int count_trail_chars(const char __user * user_buffer, |
764 | unsigned int maxlen) | |
1da177e4 LT |
765 | { |
766 | int i; | |
767 | ||
768 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
769 | char c; |
770 | if (get_user(c, &user_buffer[i])) | |
771 | return -EFAULT; | |
772 | switch (c) { | |
1da177e4 LT |
773 | case '\"': |
774 | case '\n': | |
775 | case '\r': | |
776 | case '\t': | |
777 | case ' ': | |
778 | case '=': | |
779 | break; | |
780 | default: | |
781 | goto done; | |
3ff50b79 | 782 | } |
1da177e4 LT |
783 | } |
784 | done: | |
785 | return i; | |
786 | } | |
787 | ||
bf0813bd PG |
788 | static long num_arg(const char __user *user_buffer, unsigned long maxlen, |
789 | unsigned long *num) | |
1da177e4 | 790 | { |
d6182223 | 791 | int i; |
1da177e4 | 792 | *num = 0; |
222f1806 | 793 | |
d6182223 | 794 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
795 | char c; |
796 | if (get_user(c, &user_buffer[i])) | |
797 | return -EFAULT; | |
798 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 799 | *num *= 10; |
222f1806 | 800 | *num += c - '0'; |
1da177e4 LT |
801 | } else |
802 | break; | |
803 | } | |
804 | return i; | |
805 | } | |
806 | ||
222f1806 | 807 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 808 | { |
d6182223 | 809 | int i; |
1da177e4 | 810 | |
d6182223 | 811 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
812 | char c; |
813 | if (get_user(c, &user_buffer[i])) | |
814 | return -EFAULT; | |
815 | switch (c) { | |
1da177e4 LT |
816 | case '\"': |
817 | case '\n': | |
818 | case '\r': | |
819 | case '\t': | |
820 | case ' ': | |
821 | goto done_str; | |
1da177e4 LT |
822 | default: |
823 | break; | |
3ff50b79 | 824 | } |
1da177e4 LT |
825 | } |
826 | done_str: | |
1da177e4 LT |
827 | return i; |
828 | } | |
829 | ||
ca6549af SW |
830 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
831 | { | |
95c96174 | 832 | unsigned int n = 0; |
ca6549af SW |
833 | char c; |
834 | ssize_t i = 0; | |
835 | int len; | |
836 | ||
837 | pkt_dev->nr_labels = 0; | |
838 | do { | |
839 | __u32 tmp; | |
1ca7768c | 840 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
841 | if (len <= 0) |
842 | return len; | |
843 | pkt_dev->labels[n] = htonl(tmp); | |
844 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
845 | pkt_dev->flags |= F_MPLS_RND; | |
846 | i += len; | |
847 | if (get_user(c, &buffer[i])) | |
848 | return -EFAULT; | |
849 | i++; | |
850 | n++; | |
851 | if (n >= MAX_MPLS_LABELS) | |
852 | return -E2BIG; | |
e71a4783 | 853 | } while (c == ','); |
ca6549af SW |
854 | |
855 | pkt_dev->nr_labels = n; | |
856 | return i; | |
857 | } | |
858 | ||
222f1806 LC |
859 | static ssize_t pktgen_if_write(struct file *file, |
860 | const char __user * user_buffer, size_t count, | |
861 | loff_t * offset) | |
1da177e4 | 862 | { |
8a994a71 | 863 | struct seq_file *seq = file->private_data; |
222f1806 | 864 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 865 | int i, max, len; |
1da177e4 LT |
866 | char name[16], valstr[32]; |
867 | unsigned long value = 0; | |
222f1806 LC |
868 | char *pg_result = NULL; |
869 | int tmp = 0; | |
1da177e4 | 870 | char buf[128]; |
222f1806 LC |
871 | |
872 | pg_result = &(pkt_dev->result[0]); | |
873 | ||
1da177e4 | 874 | if (count < 1) { |
294a0b7f | 875 | pr_warn("wrong command format\n"); |
1da177e4 LT |
876 | return -EINVAL; |
877 | } | |
222f1806 | 878 | |
d6182223 PG |
879 | max = count; |
880 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 881 | if (tmp < 0) { |
294a0b7f | 882 | pr_warn("illegal format\n"); |
222f1806 | 883 | return tmp; |
1da177e4 | 884 | } |
d6182223 | 885 | i = tmp; |
222f1806 | 886 | |
1da177e4 LT |
887 | /* Read variable name */ |
888 | ||
889 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 890 | if (len < 0) |
222f1806 | 891 | return len; |
63adc6fb | 892 | |
1da177e4 | 893 | memset(name, 0, sizeof(name)); |
222f1806 | 894 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
895 | return -EFAULT; |
896 | i += len; | |
222f1806 LC |
897 | |
898 | max = count - i; | |
1da177e4 | 899 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
900 | if (len < 0) |
901 | return len; | |
902 | ||
1da177e4 LT |
903 | i += len; |
904 | ||
905 | if (debug) { | |
86c2c0a8 | 906 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
907 | char tb[copy + 1]; |
908 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 909 | return -EFAULT; |
448d7b5d | 910 | tb[copy] = 0; |
f342cda7 JP |
911 | pr_debug("%s,%lu buffer -:%s:-\n", |
912 | name, (unsigned long)count, tb); | |
222f1806 | 913 | } |
1da177e4 LT |
914 | |
915 | if (!strcmp(name, "min_pkt_size")) { | |
916 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 917 | if (len < 0) |
222f1806 | 918 | return len; |
63adc6fb | 919 | |
1da177e4 | 920 | i += len; |
222f1806 LC |
921 | if (value < 14 + 20 + 8) |
922 | value = 14 + 20 + 8; | |
923 | if (value != pkt_dev->min_pkt_size) { | |
924 | pkt_dev->min_pkt_size = value; | |
925 | pkt_dev->cur_pkt_size = value; | |
926 | } | |
927 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
928 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
929 | return count; |
930 | } | |
931 | ||
222f1806 | 932 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 933 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 934 | if (len < 0) |
222f1806 | 935 | return len; |
63adc6fb | 936 | |
1da177e4 | 937 | i += len; |
222f1806 LC |
938 | if (value < 14 + 20 + 8) |
939 | value = 14 + 20 + 8; | |
940 | if (value != pkt_dev->max_pkt_size) { | |
941 | pkt_dev->max_pkt_size = value; | |
942 | pkt_dev->cur_pkt_size = value; | |
943 | } | |
944 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
945 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
946 | return count; |
947 | } | |
948 | ||
222f1806 | 949 | /* Shortcut for min = max */ |
1da177e4 LT |
950 | |
951 | if (!strcmp(name, "pkt_size")) { | |
952 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 953 | if (len < 0) |
222f1806 | 954 | return len; |
63adc6fb | 955 | |
1da177e4 | 956 | i += len; |
222f1806 LC |
957 | if (value < 14 + 20 + 8) |
958 | value = 14 + 20 + 8; | |
959 | if (value != pkt_dev->min_pkt_size) { | |
960 | pkt_dev->min_pkt_size = value; | |
961 | pkt_dev->max_pkt_size = value; | |
962 | pkt_dev->cur_pkt_size = value; | |
963 | } | |
1da177e4 LT |
964 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
965 | return count; | |
966 | } | |
967 | ||
222f1806 | 968 | if (!strcmp(name, "debug")) { |
1da177e4 | 969 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 970 | if (len < 0) |
222f1806 | 971 | return len; |
63adc6fb | 972 | |
1da177e4 | 973 | i += len; |
222f1806 | 974 | debug = value; |
1da177e4 LT |
975 | sprintf(pg_result, "OK: debug=%u", debug); |
976 | return count; | |
977 | } | |
978 | ||
222f1806 | 979 | if (!strcmp(name, "frags")) { |
1da177e4 | 980 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 981 | if (len < 0) |
222f1806 | 982 | return len; |
63adc6fb | 983 | |
1da177e4 LT |
984 | i += len; |
985 | pkt_dev->nfrags = value; | |
986 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
987 | return count; | |
988 | } | |
989 | if (!strcmp(name, "delay")) { | |
990 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 991 | if (len < 0) |
222f1806 | 992 | return len; |
63adc6fb | 993 | |
1da177e4 | 994 | i += len; |
fd29cf72 SH |
995 | if (value == 0x7FFFFFFF) |
996 | pkt_dev->delay = ULLONG_MAX; | |
997 | else | |
9240d715 | 998 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
999 | |
1000 | sprintf(pg_result, "OK: delay=%llu", | |
1001 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
1002 | return count; |
1003 | } | |
43d28b65 DT |
1004 | if (!strcmp(name, "rate")) { |
1005 | len = num_arg(&user_buffer[i], 10, &value); | |
1006 | if (len < 0) | |
1007 | return len; | |
1008 | ||
1009 | i += len; | |
1010 | if (!value) | |
1011 | return len; | |
1012 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
1013 | if (debug) | |
f9467eae | 1014 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1015 | |
1016 | sprintf(pg_result, "OK: rate=%lu", value); | |
1017 | return count; | |
1018 | } | |
1019 | if (!strcmp(name, "ratep")) { | |
1020 | len = num_arg(&user_buffer[i], 10, &value); | |
1021 | if (len < 0) | |
1022 | return len; | |
1023 | ||
1024 | i += len; | |
1025 | if (!value) | |
1026 | return len; | |
1027 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1028 | if (debug) | |
f9467eae | 1029 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1030 | |
1031 | sprintf(pg_result, "OK: rate=%lu", value); | |
1032 | return count; | |
1033 | } | |
222f1806 | 1034 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1035 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1036 | if (len < 0) |
222f1806 | 1037 | return len; |
63adc6fb | 1038 | |
1da177e4 | 1039 | i += len; |
222f1806 LC |
1040 | if (value != pkt_dev->udp_src_min) { |
1041 | pkt_dev->udp_src_min = value; | |
1042 | pkt_dev->cur_udp_src = value; | |
1043 | } | |
1da177e4 LT |
1044 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1045 | return count; | |
1046 | } | |
222f1806 | 1047 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1048 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1049 | if (len < 0) |
222f1806 | 1050 | return len; |
63adc6fb | 1051 | |
1da177e4 | 1052 | i += len; |
222f1806 LC |
1053 | if (value != pkt_dev->udp_dst_min) { |
1054 | pkt_dev->udp_dst_min = value; | |
1055 | pkt_dev->cur_udp_dst = value; | |
1056 | } | |
1da177e4 LT |
1057 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1058 | return count; | |
1059 | } | |
222f1806 | 1060 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1061 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1062 | if (len < 0) |
222f1806 | 1063 | return len; |
63adc6fb | 1064 | |
1da177e4 | 1065 | i += len; |
222f1806 LC |
1066 | if (value != pkt_dev->udp_src_max) { |
1067 | pkt_dev->udp_src_max = value; | |
1068 | pkt_dev->cur_udp_src = value; | |
1069 | } | |
1da177e4 LT |
1070 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1071 | return count; | |
1072 | } | |
222f1806 | 1073 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1074 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1075 | if (len < 0) |
222f1806 | 1076 | return len; |
63adc6fb | 1077 | |
1da177e4 | 1078 | i += len; |
222f1806 LC |
1079 | if (value != pkt_dev->udp_dst_max) { |
1080 | pkt_dev->udp_dst_max = value; | |
1081 | pkt_dev->cur_udp_dst = value; | |
1082 | } | |
1da177e4 LT |
1083 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1084 | return count; | |
1085 | } | |
1086 | if (!strcmp(name, "clone_skb")) { | |
1087 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1088 | if (len < 0) |
222f1806 | 1089 | return len; |
d8873315 | 1090 | if ((value > 0) && |
62f64aed AS |
1091 | ((pkt_dev->xmit_mode == M_NETIF_RECEIVE) || |
1092 | !(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) | |
d8873315 | 1093 | return -ENOTSUPP; |
1da177e4 | 1094 | i += len; |
222f1806 LC |
1095 | pkt_dev->clone_skb = value; |
1096 | ||
1da177e4 LT |
1097 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1098 | return count; | |
1099 | } | |
1100 | if (!strcmp(name, "count")) { | |
1101 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1102 | if (len < 0) |
222f1806 | 1103 | return len; |
63adc6fb | 1104 | |
1da177e4 LT |
1105 | i += len; |
1106 | pkt_dev->count = value; | |
1107 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1108 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1109 | return count; |
1110 | } | |
1111 | if (!strcmp(name, "src_mac_count")) { | |
1112 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1113 | if (len < 0) |
222f1806 | 1114 | return len; |
63adc6fb | 1115 | |
1da177e4 LT |
1116 | i += len; |
1117 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1118 | pkt_dev->src_mac_count = value; |
1119 | pkt_dev->cur_src_mac_offset = 0; | |
1120 | } | |
1121 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1122 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1123 | return count; |
1124 | } | |
1125 | if (!strcmp(name, "dst_mac_count")) { | |
1126 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1127 | if (len < 0) |
222f1806 | 1128 | return len; |
63adc6fb | 1129 | |
1da177e4 LT |
1130 | i += len; |
1131 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1132 | pkt_dev->dst_mac_count = value; |
1133 | pkt_dev->cur_dst_mac_offset = 0; | |
1134 | } | |
1135 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1136 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1137 | return count; |
1138 | } | |
38b2cf29 AS |
1139 | if (!strcmp(name, "burst")) { |
1140 | len = num_arg(&user_buffer[i], 10, &value); | |
1141 | if (len < 0) | |
1142 | return len; | |
1143 | ||
1144 | i += len; | |
62f64aed | 1145 | if ((value > 1) && (pkt_dev->xmit_mode == M_START_XMIT) && |
52d6c8c6 ED |
1146 | (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) |
1147 | return -ENOTSUPP; | |
38b2cf29 AS |
1148 | pkt_dev->burst = value < 1 ? 1 : value; |
1149 | sprintf(pg_result, "OK: burst=%d", pkt_dev->burst); | |
1150 | return count; | |
1151 | } | |
e99b99b4 RO |
1152 | if (!strcmp(name, "node")) { |
1153 | len = num_arg(&user_buffer[i], 10, &value); | |
1154 | if (len < 0) | |
1155 | return len; | |
1156 | ||
1157 | i += len; | |
1158 | ||
1159 | if (node_possible(value)) { | |
1160 | pkt_dev->node = value; | |
1161 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1162 | if (pkt_dev->page) { |
1163 | put_page(pkt_dev->page); | |
1164 | pkt_dev->page = NULL; | |
1165 | } | |
e99b99b4 RO |
1166 | } |
1167 | else | |
1168 | sprintf(pg_result, "ERROR: node not possible"); | |
1169 | return count; | |
1170 | } | |
62f64aed AS |
1171 | if (!strcmp(name, "xmit_mode")) { |
1172 | char f[32]; | |
1173 | ||
1174 | memset(f, 0, 32); | |
1175 | len = strn_len(&user_buffer[i], sizeof(f) - 1); | |
1176 | if (len < 0) | |
1177 | return len; | |
1178 | ||
1179 | if (copy_from_user(f, &user_buffer[i], len)) | |
1180 | return -EFAULT; | |
1181 | i += len; | |
1182 | ||
1183 | if (strcmp(f, "start_xmit") == 0) { | |
1184 | pkt_dev->xmit_mode = M_START_XMIT; | |
1185 | } else if (strcmp(f, "netif_receive") == 0) { | |
1186 | /* clone_skb set earlier, not supported in this mode */ | |
1187 | if (pkt_dev->clone_skb > 0) | |
1188 | return -ENOTSUPP; | |
1189 | ||
1190 | pkt_dev->xmit_mode = M_NETIF_RECEIVE; | |
9eea9222 AS |
1191 | |
1192 | /* make sure new packet is allocated every time | |
1193 | * pktgen_xmit() is called | |
1194 | */ | |
1195 | pkt_dev->last_ok = 1; | |
1196 | ||
1197 | /* override clone_skb if user passed default value | |
1198 | * at module loading time | |
1199 | */ | |
1200 | pkt_dev->clone_skb = 0; | |
62f64aed AS |
1201 | } else { |
1202 | sprintf(pg_result, | |
1203 | "xmit_mode -:%s:- unknown\nAvailable modes: %s", | |
1204 | f, "start_xmit, netif_receive\n"); | |
1205 | return count; | |
1206 | } | |
1207 | sprintf(pg_result, "OK: xmit_mode=%s", f); | |
1208 | return count; | |
1209 | } | |
1da177e4 | 1210 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1211 | char f[32]; |
1212 | memset(f, 0, 32); | |
1da177e4 | 1213 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1214 | if (len < 0) |
222f1806 | 1215 | return len; |
63adc6fb | 1216 | |
1da177e4 LT |
1217 | if (copy_from_user(f, &user_buffer[i], len)) |
1218 | return -EFAULT; | |
1219 | i += len; | |
222f1806 LC |
1220 | if (strcmp(f, "IPSRC_RND") == 0) |
1221 | pkt_dev->flags |= F_IPSRC_RND; | |
1222 | ||
1223 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1224 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1225 | ||
1226 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1227 | pkt_dev->flags |= F_TXSIZE_RND; | |
1228 | ||
1229 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1230 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1231 | ||
1232 | else if (strcmp(f, "IPDST_RND") == 0) | |
1233 | pkt_dev->flags |= F_IPDST_RND; | |
1234 | ||
1235 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1236 | pkt_dev->flags &= ~F_IPDST_RND; | |
1237 | ||
1238 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1239 | pkt_dev->flags |= F_UDPSRC_RND; | |
1240 | ||
1241 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1242 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1243 | ||
1244 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1245 | pkt_dev->flags |= F_UDPDST_RND; | |
1246 | ||
1247 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1248 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1249 | ||
1250 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1251 | pkt_dev->flags |= F_MACSRC_RND; | |
1252 | ||
1253 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1254 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1255 | ||
1256 | else if (strcmp(f, "MACDST_RND") == 0) | |
1257 | pkt_dev->flags |= F_MACDST_RND; | |
1258 | ||
1259 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1260 | pkt_dev->flags &= ~F_MACDST_RND; | |
1261 | ||
ca6549af SW |
1262 | else if (strcmp(f, "MPLS_RND") == 0) |
1263 | pkt_dev->flags |= F_MPLS_RND; | |
1264 | ||
1265 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1266 | pkt_dev->flags &= ~F_MPLS_RND; | |
1267 | ||
34954ddc FF |
1268 | else if (strcmp(f, "VID_RND") == 0) |
1269 | pkt_dev->flags |= F_VID_RND; | |
1270 | ||
1271 | else if (strcmp(f, "!VID_RND") == 0) | |
1272 | pkt_dev->flags &= ~F_VID_RND; | |
1273 | ||
1274 | else if (strcmp(f, "SVID_RND") == 0) | |
1275 | pkt_dev->flags |= F_SVID_RND; | |
1276 | ||
1277 | else if (strcmp(f, "!SVID_RND") == 0) | |
1278 | pkt_dev->flags &= ~F_SVID_RND; | |
1279 | ||
007a531b JHS |
1280 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1281 | pkt_dev->flags |= F_FLOW_SEQ; | |
1282 | ||
45b270f8 RO |
1283 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1284 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1285 | ||
1286 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1287 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1288 | |
1289 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1290 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1291 | ||
1292 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1293 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1294 | #ifdef CONFIG_XFRM |
1295 | else if (strcmp(f, "IPSEC") == 0) | |
1296 | pkt_dev->flags |= F_IPSEC_ON; | |
1297 | #endif | |
1298 | ||
1ca7768c FF |
1299 | else if (strcmp(f, "!IPV6") == 0) |
1300 | pkt_dev->flags &= ~F_IPV6; | |
1301 | ||
e99b99b4 RO |
1302 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1303 | pkt_dev->flags |= F_NODE; | |
1304 | ||
1305 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1306 | pkt_dev->flags &= ~F_NODE; | |
1307 | ||
c26bf4a5 TG |
1308 | else if (strcmp(f, "UDPCSUM") == 0) |
1309 | pkt_dev->flags |= F_UDPCSUM; | |
1310 | ||
1311 | else if (strcmp(f, "!UDPCSUM") == 0) | |
1312 | pkt_dev->flags &= ~F_UDPCSUM; | |
1313 | ||
afb84b62 JDB |
1314 | else if (strcmp(f, "NO_TIMESTAMP") == 0) |
1315 | pkt_dev->flags |= F_NO_TIMESTAMP; | |
1316 | ||
f1f00d8f JDB |
1317 | else if (strcmp(f, "!NO_TIMESTAMP") == 0) |
1318 | pkt_dev->flags &= ~F_NO_TIMESTAMP; | |
1319 | ||
222f1806 LC |
1320 | else { |
1321 | sprintf(pg_result, | |
1322 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1323 | f, | |
1ca7768c | 1324 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
72f8e06f MK |
1325 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, " |
1326 | "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, " | |
1327 | "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, " | |
afb84b62 | 1328 | "NO_TIMESTAMP, " |
72f8e06f MK |
1329 | #ifdef CONFIG_XFRM |
1330 | "IPSEC, " | |
1331 | #endif | |
1332 | "NODE_ALLOC\n"); | |
222f1806 LC |
1333 | return count; |
1334 | } | |
1da177e4 LT |
1335 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1336 | return count; | |
1337 | } | |
1338 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1339 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1340 | if (len < 0) |
222f1806 | 1341 | return len; |
1da177e4 | 1342 | |
222f1806 | 1343 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1344 | return -EFAULT; |
222f1806 LC |
1345 | buf[len] = 0; |
1346 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1347 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1348 | strncpy(pkt_dev->dst_min, buf, len); | |
1349 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1350 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1351 | } | |
1352 | if (debug) | |
f342cda7 | 1353 | pr_debug("dst_min set to: %s\n", pkt_dev->dst_min); |
222f1806 | 1354 | i += len; |
1da177e4 LT |
1355 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1356 | return count; | |
1357 | } | |
1358 | if (!strcmp(name, "dst_max")) { | |
1359 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1360 | if (len < 0) |
222f1806 | 1361 | return len; |
63adc6fb | 1362 | |
1da177e4 | 1363 | |
222f1806 | 1364 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1365 | return -EFAULT; |
1366 | ||
222f1806 LC |
1367 | buf[len] = 0; |
1368 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1369 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1370 | strncpy(pkt_dev->dst_max, buf, len); | |
1371 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1372 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1373 | } | |
1374 | if (debug) | |
f342cda7 | 1375 | pr_debug("dst_max set to: %s\n", pkt_dev->dst_max); |
1da177e4 LT |
1376 | i += len; |
1377 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1378 | return count; | |
1379 | } | |
1380 | if (!strcmp(name, "dst6")) { | |
1381 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1382 | if (len < 0) |
1383 | return len; | |
1da177e4 LT |
1384 | |
1385 | pkt_dev->flags |= F_IPV6; | |
1386 | ||
222f1806 | 1387 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1388 | return -EFAULT; |
222f1806 | 1389 | buf[len] = 0; |
1da177e4 | 1390 | |
c468fb13 | 1391 | in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1392 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 | 1393 | |
4e3fd7a0 | 1394 | pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; |
1da177e4 | 1395 | |
222f1806 | 1396 | if (debug) |
f342cda7 | 1397 | pr_debug("dst6 set to: %s\n", buf); |
1da177e4 | 1398 | |
222f1806 | 1399 | i += len; |
1da177e4 LT |
1400 | sprintf(pg_result, "OK: dst6=%s", buf); |
1401 | return count; | |
1402 | } | |
1403 | if (!strcmp(name, "dst6_min")) { | |
1404 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1405 | if (len < 0) |
1406 | return len; | |
1da177e4 LT |
1407 | |
1408 | pkt_dev->flags |= F_IPV6; | |
1409 | ||
222f1806 | 1410 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1411 | return -EFAULT; |
222f1806 | 1412 | buf[len] = 0; |
1da177e4 | 1413 | |
c468fb13 | 1414 | in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1415 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1416 | |
4e3fd7a0 | 1417 | pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; |
222f1806 | 1418 | if (debug) |
f342cda7 | 1419 | pr_debug("dst6_min set to: %s\n", buf); |
1da177e4 | 1420 | |
222f1806 | 1421 | i += len; |
1da177e4 LT |
1422 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1423 | return count; | |
1424 | } | |
1425 | if (!strcmp(name, "dst6_max")) { | |
1426 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1427 | if (len < 0) |
1428 | return len; | |
1da177e4 LT |
1429 | |
1430 | pkt_dev->flags |= F_IPV6; | |
1431 | ||
222f1806 | 1432 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1433 | return -EFAULT; |
222f1806 | 1434 | buf[len] = 0; |
1da177e4 | 1435 | |
c468fb13 | 1436 | in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1437 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1438 | |
222f1806 | 1439 | if (debug) |
f342cda7 | 1440 | pr_debug("dst6_max set to: %s\n", buf); |
1da177e4 | 1441 | |
222f1806 | 1442 | i += len; |
1da177e4 LT |
1443 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1444 | return count; | |
1445 | } | |
1446 | if (!strcmp(name, "src6")) { | |
1447 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1448 | if (len < 0) |
1449 | return len; | |
1da177e4 LT |
1450 | |
1451 | pkt_dev->flags |= F_IPV6; | |
1452 | ||
222f1806 | 1453 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1454 | return -EFAULT; |
222f1806 | 1455 | buf[len] = 0; |
1da177e4 | 1456 | |
c468fb13 | 1457 | in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL); |
47a0200d | 1458 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 | 1459 | |
4e3fd7a0 | 1460 | pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; |
1da177e4 | 1461 | |
222f1806 | 1462 | if (debug) |
f342cda7 | 1463 | pr_debug("src6 set to: %s\n", buf); |
222f1806 LC |
1464 | |
1465 | i += len; | |
1da177e4 LT |
1466 | sprintf(pg_result, "OK: src6=%s", buf); |
1467 | return count; | |
1468 | } | |
1469 | if (!strcmp(name, "src_min")) { | |
1470 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1471 | if (len < 0) |
222f1806 | 1472 | return len; |
63adc6fb | 1473 | |
222f1806 | 1474 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1475 | return -EFAULT; |
222f1806 LC |
1476 | buf[len] = 0; |
1477 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1478 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1479 | strncpy(pkt_dev->src_min, buf, len); | |
1480 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1481 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1482 | } | |
1483 | if (debug) | |
f342cda7 | 1484 | pr_debug("src_min set to: %s\n", pkt_dev->src_min); |
1da177e4 LT |
1485 | i += len; |
1486 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1487 | return count; | |
1488 | } | |
1489 | if (!strcmp(name, "src_max")) { | |
1490 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1491 | if (len < 0) |
222f1806 | 1492 | return len; |
63adc6fb | 1493 | |
222f1806 | 1494 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1495 | return -EFAULT; |
222f1806 LC |
1496 | buf[len] = 0; |
1497 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1498 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1499 | strncpy(pkt_dev->src_max, buf, len); | |
1500 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1501 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1502 | } | |
1503 | if (debug) | |
f342cda7 | 1504 | pr_debug("src_max set to: %s\n", pkt_dev->src_max); |
1da177e4 LT |
1505 | i += len; |
1506 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1507 | return count; | |
1508 | } | |
1509 | if (!strcmp(name, "dst_mac")) { | |
1da177e4 | 1510 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1511 | if (len < 0) |
222f1806 | 1512 | return len; |
63adc6fb | 1513 | |
1da177e4 | 1514 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1515 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1516 | return -EFAULT; |
1da177e4 | 1517 | |
4940fc88 AD |
1518 | if (!mac_pton(valstr, pkt_dev->dst_mac)) |
1519 | return -EINVAL; | |
1da177e4 | 1520 | /* Set up Dest MAC */ |
9ea08b12 | 1521 | ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac); |
222f1806 | 1522 | |
4940fc88 | 1523 | sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); |
1da177e4 LT |
1524 | return count; |
1525 | } | |
1526 | if (!strcmp(name, "src_mac")) { | |
1da177e4 | 1527 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1528 | if (len < 0) |
222f1806 | 1529 | return len; |
63adc6fb | 1530 | |
1da177e4 | 1531 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1532 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1533 | return -EFAULT; |
1da177e4 | 1534 | |
4940fc88 AD |
1535 | if (!mac_pton(valstr, pkt_dev->src_mac)) |
1536 | return -EINVAL; | |
ce5d0b47 | 1537 | /* Set up Src MAC */ |
9ea08b12 | 1538 | ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac); |
ce5d0b47 | 1539 | |
4940fc88 | 1540 | sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); |
1da177e4 LT |
1541 | return count; |
1542 | } | |
1543 | ||
222f1806 LC |
1544 | if (!strcmp(name, "clear_counters")) { |
1545 | pktgen_clear_counters(pkt_dev); | |
1546 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1547 | return count; | |
1548 | } | |
1da177e4 LT |
1549 | |
1550 | if (!strcmp(name, "flows")) { | |
1551 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1552 | if (len < 0) |
222f1806 | 1553 | return len; |
63adc6fb | 1554 | |
1da177e4 LT |
1555 | i += len; |
1556 | if (value > MAX_CFLOWS) | |
1557 | value = MAX_CFLOWS; | |
1558 | ||
1559 | pkt_dev->cflows = value; | |
1560 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1561 | return count; | |
1562 | } | |
6bae9190 | 1563 | #ifdef CONFIG_XFRM |
de4aee7d FD |
1564 | if (!strcmp(name, "spi")) { |
1565 | len = num_arg(&user_buffer[i], 10, &value); | |
1566 | if (len < 0) | |
1567 | return len; | |
1568 | ||
1569 | i += len; | |
1570 | pkt_dev->spi = value; | |
1571 | sprintf(pg_result, "OK: spi=%u", pkt_dev->spi); | |
1572 | return count; | |
1573 | } | |
6bae9190 | 1574 | #endif |
1da177e4 LT |
1575 | if (!strcmp(name, "flowlen")) { |
1576 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1577 | if (len < 0) |
222f1806 | 1578 | return len; |
63adc6fb | 1579 | |
1da177e4 LT |
1580 | i += len; |
1581 | pkt_dev->lflow = value; | |
1582 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1583 | return count; | |
1584 | } | |
222f1806 | 1585 | |
45b270f8 RO |
1586 | if (!strcmp(name, "queue_map_min")) { |
1587 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1588 | if (len < 0) |
45b270f8 | 1589 | return len; |
63adc6fb | 1590 | |
45b270f8 RO |
1591 | i += len; |
1592 | pkt_dev->queue_map_min = value; | |
1593 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1594 | return count; | |
1595 | } | |
1596 | ||
1597 | if (!strcmp(name, "queue_map_max")) { | |
1598 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1599 | if (len < 0) |
45b270f8 | 1600 | return len; |
63adc6fb | 1601 | |
45b270f8 RO |
1602 | i += len; |
1603 | pkt_dev->queue_map_max = value; | |
1604 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1605 | return count; | |
1606 | } | |
1607 | ||
ca6549af | 1608 | if (!strcmp(name, "mpls")) { |
95c96174 | 1609 | unsigned int n, cnt; |
cfcabdcc | 1610 | |
ca6549af | 1611 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1612 | if (len < 0) |
1613 | return len; | |
ca6549af | 1614 | i += len; |
cfcabdcc | 1615 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1616 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1617 | cnt += sprintf(pg_result + cnt, |
1618 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1619 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1620 | |
1621 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1622 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1623 | pkt_dev->svlan_id = 0xffff; | |
1624 | ||
1625 | if (debug) | |
f342cda7 | 1626 | pr_debug("VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1627 | } |
1628 | return count; | |
1629 | } | |
1630 | ||
1631 | if (!strcmp(name, "vlan_id")) { | |
1632 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1633 | if (len < 0) |
34954ddc | 1634 | return len; |
63adc6fb | 1635 | |
34954ddc FF |
1636 | i += len; |
1637 | if (value <= 4095) { | |
1638 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1639 | ||
1640 | if (debug) | |
f342cda7 | 1641 | pr_debug("VLAN turned on\n"); |
34954ddc FF |
1642 | |
1643 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1644 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1645 | |
1646 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1647 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1648 | } else { | |
1649 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1650 | pkt_dev->svlan_id = 0xffff; | |
1651 | ||
1652 | if (debug) | |
f342cda7 | 1653 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1654 | } |
1655 | return count; | |
1656 | } | |
1657 | ||
1658 | if (!strcmp(name, "vlan_p")) { | |
1659 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1660 | if (len < 0) |
34954ddc | 1661 | return len; |
63adc6fb | 1662 | |
34954ddc FF |
1663 | i += len; |
1664 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1665 | pkt_dev->vlan_p = value; | |
1666 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1667 | } else { | |
1668 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1669 | } | |
1670 | return count; | |
1671 | } | |
1672 | ||
1673 | if (!strcmp(name, "vlan_cfi")) { | |
1674 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1675 | if (len < 0) |
34954ddc | 1676 | return len; |
63adc6fb | 1677 | |
34954ddc FF |
1678 | i += len; |
1679 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1680 | pkt_dev->vlan_cfi = value; | |
1681 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1682 | } else { | |
1683 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1684 | } | |
1685 | return count; | |
1686 | } | |
1687 | ||
1688 | if (!strcmp(name, "svlan_id")) { | |
1689 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1690 | if (len < 0) |
34954ddc | 1691 | return len; |
63adc6fb | 1692 | |
34954ddc FF |
1693 | i += len; |
1694 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1695 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1696 | ||
1697 | if (debug) | |
f342cda7 | 1698 | pr_debug("SVLAN turned on\n"); |
34954ddc FF |
1699 | |
1700 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1701 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1702 | |
1703 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1704 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1705 | } else { | |
1706 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1707 | pkt_dev->svlan_id = 0xffff; | |
1708 | ||
1709 | if (debug) | |
f342cda7 | 1710 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1711 | } |
1712 | return count; | |
1713 | } | |
1714 | ||
1715 | if (!strcmp(name, "svlan_p")) { | |
1716 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1717 | if (len < 0) |
34954ddc | 1718 | return len; |
63adc6fb | 1719 | |
34954ddc FF |
1720 | i += len; |
1721 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1722 | pkt_dev->svlan_p = value; | |
1723 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1724 | } else { | |
1725 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1726 | } | |
1727 | return count; | |
1728 | } | |
1729 | ||
1730 | if (!strcmp(name, "svlan_cfi")) { | |
1731 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1732 | if (len < 0) |
34954ddc | 1733 | return len; |
63adc6fb | 1734 | |
34954ddc FF |
1735 | i += len; |
1736 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1737 | pkt_dev->svlan_cfi = value; | |
1738 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1739 | } else { | |
1740 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1741 | } | |
ca6549af SW |
1742 | return count; |
1743 | } | |
1744 | ||
1ca7768c FF |
1745 | if (!strcmp(name, "tos")) { |
1746 | __u32 tmp_value = 0; | |
1747 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1748 | if (len < 0) |
1ca7768c | 1749 | return len; |
63adc6fb | 1750 | |
1ca7768c FF |
1751 | i += len; |
1752 | if (len == 2) { | |
1753 | pkt_dev->tos = tmp_value; | |
1754 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1755 | } else { | |
1756 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1757 | } | |
1758 | return count; | |
1759 | } | |
1760 | ||
1761 | if (!strcmp(name, "traffic_class")) { | |
1762 | __u32 tmp_value = 0; | |
1763 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1764 | if (len < 0) |
1ca7768c | 1765 | return len; |
63adc6fb | 1766 | |
1ca7768c FF |
1767 | i += len; |
1768 | if (len == 2) { | |
1769 | pkt_dev->traffic_class = tmp_value; | |
1770 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1771 | } else { | |
1772 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1773 | } | |
1774 | return count; | |
1775 | } | |
1776 | ||
9e50e3ac JF |
1777 | if (!strcmp(name, "skb_priority")) { |
1778 | len = num_arg(&user_buffer[i], 9, &value); | |
1779 | if (len < 0) | |
1780 | return len; | |
1781 | ||
1782 | i += len; | |
1783 | pkt_dev->skb_priority = value; | |
1784 | sprintf(pg_result, "OK: skb_priority=%i", | |
1785 | pkt_dev->skb_priority); | |
1786 | return count; | |
1787 | } | |
1788 | ||
1da177e4 LT |
1789 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1790 | return -EINVAL; | |
1791 | } | |
1792 | ||
d50a6b56 | 1793 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1794 | { |
d9dda78b | 1795 | return single_open(file, pktgen_if_show, PDE_DATA(inode)); |
d50a6b56 | 1796 | } |
1da177e4 | 1797 | |
9a32144e | 1798 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1799 | .owner = THIS_MODULE, |
1800 | .open = pktgen_if_open, | |
1801 | .read = seq_read, | |
1802 | .llseek = seq_lseek, | |
1803 | .write = pktgen_if_write, | |
1804 | .release = single_release, | |
d50a6b56 | 1805 | }; |
1da177e4 | 1806 | |
d50a6b56 SH |
1807 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1808 | { | |
222f1806 | 1809 | struct pktgen_thread *t = seq->private; |
648fda74 | 1810 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1811 | |
1812 | BUG_ON(!t); | |
1da177e4 | 1813 | |
97dc48e2 | 1814 | seq_puts(seq, "Running: "); |
1da177e4 | 1815 | |
8788370a JDB |
1816 | rcu_read_lock(); |
1817 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
222f1806 | 1818 | if (pkt_dev->running) |
593f63b0 | 1819 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1820 | |
97dc48e2 | 1821 | seq_puts(seq, "\nStopped: "); |
222f1806 | 1822 | |
8788370a | 1823 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) |
222f1806 | 1824 | if (!pkt_dev->running) |
593f63b0 | 1825 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1826 | |
1827 | if (t->result[0]) | |
d50a6b56 | 1828 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1829 | else |
97dc48e2 | 1830 | seq_puts(seq, "\nResult: NA\n"); |
1da177e4 | 1831 | |
8788370a | 1832 | rcu_read_unlock(); |
1da177e4 | 1833 | |
d50a6b56 | 1834 | return 0; |
1da177e4 LT |
1835 | } |
1836 | ||
d50a6b56 | 1837 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1838 | const char __user * user_buffer, |
1839 | size_t count, loff_t * offset) | |
1da177e4 | 1840 | { |
8a994a71 | 1841 | struct seq_file *seq = file->private_data; |
222f1806 | 1842 | struct pktgen_thread *t = seq->private; |
d6182223 | 1843 | int i, max, len, ret; |
1da177e4 | 1844 | char name[40]; |
222f1806 | 1845 | char *pg_result; |
d50a6b56 | 1846 | |
1da177e4 | 1847 | if (count < 1) { |
222f1806 | 1848 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1849 | return -EINVAL; |
1850 | } | |
d50a6b56 | 1851 | |
d6182223 PG |
1852 | max = count; |
1853 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1854 | if (len < 0) |
d50a6b56 SH |
1855 | return len; |
1856 | ||
d6182223 | 1857 | i = len; |
d50a6b56 | 1858 | |
1da177e4 LT |
1859 | /* Read variable name */ |
1860 | ||
1861 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1862 | if (len < 0) |
d50a6b56 | 1863 | return len; |
222f1806 | 1864 | |
1da177e4 LT |
1865 | memset(name, 0, sizeof(name)); |
1866 | if (copy_from_user(name, &user_buffer[i], len)) | |
1867 | return -EFAULT; | |
1868 | i += len; | |
d50a6b56 | 1869 | |
222f1806 | 1870 | max = count - i; |
1da177e4 | 1871 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1872 | if (len < 0) |
d50a6b56 SH |
1873 | return len; |
1874 | ||
1da177e4 LT |
1875 | i += len; |
1876 | ||
d50a6b56 | 1877 | if (debug) |
f342cda7 | 1878 | pr_debug("t=%s, count=%lu\n", name, (unsigned long)count); |
1da177e4 | 1879 | |
222f1806 | 1880 | if (!t) { |
f9467eae | 1881 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1882 | ret = -EINVAL; |
1883 | goto out; | |
1884 | } | |
1885 | ||
1886 | pg_result = &(t->result[0]); | |
1887 | ||
222f1806 LC |
1888 | if (!strcmp(name, "add_device")) { |
1889 | char f[32]; | |
1890 | memset(f, 0, 32); | |
1da177e4 | 1891 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1892 | if (len < 0) { |
1893 | ret = len; | |
1da177e4 LT |
1894 | goto out; |
1895 | } | |
222f1806 | 1896 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1897 | return -EFAULT; |
1898 | i += len; | |
6146e6a4 | 1899 | mutex_lock(&pktgen_thread_lock); |
604dfd6e | 1900 | ret = pktgen_add_device(t, f); |
6146e6a4 | 1901 | mutex_unlock(&pktgen_thread_lock); |
604dfd6e CW |
1902 | if (!ret) { |
1903 | ret = count; | |
1904 | sprintf(pg_result, "OK: add_device=%s", f); | |
1905 | } else | |
1906 | sprintf(pg_result, "ERROR: can not add device %s", f); | |
1da177e4 LT |
1907 | goto out; |
1908 | } | |
1909 | ||
222f1806 | 1910 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1911 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1912 | t->control |= T_REMDEVALL; |
6146e6a4 | 1913 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1914 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1915 | ret = count; |
222f1806 | 1916 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1917 | goto out; |
1918 | } | |
1919 | ||
222f1806 | 1920 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1921 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1922 | ret = count; |
1da177e4 LT |
1923 | goto out; |
1924 | } | |
1925 | ||
1926 | ret = -EINVAL; | |
222f1806 | 1927 | out: |
1da177e4 LT |
1928 | return ret; |
1929 | } | |
1930 | ||
d50a6b56 | 1931 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1932 | { |
d9dda78b | 1933 | return single_open(file, pktgen_thread_show, PDE_DATA(inode)); |
1da177e4 LT |
1934 | } |
1935 | ||
9a32144e | 1936 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1937 | .owner = THIS_MODULE, |
1938 | .open = pktgen_thread_open, | |
1939 | .read = seq_read, | |
1940 | .llseek = seq_lseek, | |
1941 | .write = pktgen_thread_write, | |
1942 | .release = single_release, | |
d50a6b56 | 1943 | }; |
1da177e4 LT |
1944 | |
1945 | /* Think find or remove for NN */ | |
4e58a027 CW |
1946 | static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn, |
1947 | const char *ifname, int remove) | |
1da177e4 LT |
1948 | { |
1949 | struct pktgen_thread *t; | |
1950 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1951 | bool exact = (remove == FIND); |
1da177e4 | 1952 | |
4e58a027 | 1953 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
3e984840 | 1954 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1955 | if (pkt_dev) { |
222f1806 | 1956 | if (remove) { |
222f1806 LC |
1957 | pkt_dev->removal_mark = 1; |
1958 | t->control |= T_REMDEV; | |
222f1806 | 1959 | } |
1da177e4 LT |
1960 | break; |
1961 | } | |
1da177e4 | 1962 | } |
222f1806 | 1963 | return pkt_dev; |
1da177e4 LT |
1964 | } |
1965 | ||
95ed63f7 AK |
1966 | /* |
1967 | * mark a device for removal | |
1968 | */ | |
4e58a027 | 1969 | static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname) |
1da177e4 LT |
1970 | { |
1971 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1972 | const int max_tries = 10, msec_per_try = 125; |
1973 | int i = 0; | |
95ed63f7 | 1974 | |
6146e6a4 | 1975 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1976 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1977 | |
222f1806 | 1978 | while (1) { |
95ed63f7 | 1979 | |
4e58a027 | 1980 | pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE); |
222f1806 LC |
1981 | if (pkt_dev == NULL) |
1982 | break; /* success */ | |
95ed63f7 | 1983 | |
6146e6a4 | 1984 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1985 | pr_debug("%s: waiting for %s to disappear....\n", |
1986 | __func__, ifname); | |
95ed63f7 | 1987 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1988 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1989 | |
1990 | if (++i >= max_tries) { | |
f9467eae JP |
1991 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1992 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1993 | break; |
1994 | } | |
1995 | ||
1996 | } | |
1997 | ||
6146e6a4 | 1998 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1999 | } |
95ed63f7 | 2000 | |
4e58a027 | 2001 | static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev) |
39df232f SH |
2002 | { |
2003 | struct pktgen_thread *t; | |
2004 | ||
4e58a027 | 2005 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
39df232f SH |
2006 | struct pktgen_dev *pkt_dev; |
2007 | ||
8788370a JDB |
2008 | rcu_read_lock(); |
2009 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
39df232f SH |
2010 | if (pkt_dev->odev != dev) |
2011 | continue; | |
2012 | ||
a8ca16ea | 2013 | proc_remove(pkt_dev->entry); |
39df232f | 2014 | |
2975315b | 2015 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
4e58a027 | 2016 | pn->proc_dir, |
2975315b AD |
2017 | &pktgen_if_fops, |
2018 | pkt_dev); | |
39df232f | 2019 | if (!pkt_dev->entry) |
f9467eae JP |
2020 | pr_err("can't move proc entry for '%s'\n", |
2021 | dev->name); | |
39df232f SH |
2022 | break; |
2023 | } | |
8788370a | 2024 | rcu_read_unlock(); |
39df232f | 2025 | } |
1da177e4 LT |
2026 | } |
2027 | ||
222f1806 LC |
2028 | static int pktgen_device_event(struct notifier_block *unused, |
2029 | unsigned long event, void *ptr) | |
1da177e4 | 2030 | { |
351638e7 | 2031 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
4e58a027 | 2032 | struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id); |
1da177e4 | 2033 | |
4e58a027 | 2034 | if (pn->pktgen_exiting) |
e9dc8653 EB |
2035 | return NOTIFY_DONE; |
2036 | ||
1da177e4 LT |
2037 | /* It is OK that we do not hold the group lock right now, |
2038 | * as we run under the RTNL lock. | |
2039 | */ | |
2040 | ||
2041 | switch (event) { | |
39df232f | 2042 | case NETDEV_CHANGENAME: |
4e58a027 | 2043 | pktgen_change_name(pn, dev); |
1da177e4 | 2044 | break; |
222f1806 | 2045 | |
1da177e4 | 2046 | case NETDEV_UNREGISTER: |
4e58a027 | 2047 | pktgen_mark_device(pn, dev->name); |
1da177e4 | 2048 | break; |
3ff50b79 | 2049 | } |
1da177e4 LT |
2050 | |
2051 | return NOTIFY_DONE; | |
2052 | } | |
2053 | ||
4e58a027 CW |
2054 | static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn, |
2055 | struct pktgen_dev *pkt_dev, | |
63adc6fb | 2056 | const char *ifname) |
e6fce5b9 RO |
2057 | { |
2058 | char b[IFNAMSIZ+5]; | |
d6182223 | 2059 | int i; |
e6fce5b9 | 2060 | |
63adc6fb SH |
2061 | for (i = 0; ifname[i] != '@'; i++) { |
2062 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
2063 | break; |
2064 | ||
2065 | b[i] = ifname[i]; | |
2066 | } | |
2067 | b[i] = 0; | |
2068 | ||
4e58a027 | 2069 | return dev_get_by_name(pn->net, b); |
e6fce5b9 RO |
2070 | } |
2071 | ||
2072 | ||
1da177e4 LT |
2073 | /* Associate pktgen_dev with a device. */ |
2074 | ||
4e58a027 CW |
2075 | static int pktgen_setup_dev(const struct pktgen_net *pn, |
2076 | struct pktgen_dev *pkt_dev, const char *ifname) | |
222f1806 | 2077 | { |
1da177e4 | 2078 | struct net_device *odev; |
39df232f | 2079 | int err; |
1da177e4 LT |
2080 | |
2081 | /* Clean old setups */ | |
1da177e4 LT |
2082 | if (pkt_dev->odev) { |
2083 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2084 | pkt_dev->odev = NULL; |
2085 | } | |
1da177e4 | 2086 | |
4e58a027 | 2087 | odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname); |
1da177e4 | 2088 | if (!odev) { |
f9467eae | 2089 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2090 | return -ENODEV; |
1da177e4 | 2091 | } |
39df232f | 2092 | |
1da177e4 | 2093 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2094 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2095 | err = -EINVAL; |
2096 | } else if (!netif_running(odev)) { | |
f9467eae | 2097 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2098 | err = -ENETDOWN; |
2099 | } else { | |
2100 | pkt_dev->odev = odev; | |
2101 | return 0; | |
1da177e4 | 2102 | } |
1da177e4 | 2103 | |
1da177e4 | 2104 | dev_put(odev); |
39df232f | 2105 | return err; |
1da177e4 LT |
2106 | } |
2107 | ||
2108 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2109 | * structure to have the right information to create/send packets | |
2110 | */ | |
2111 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2112 | { | |
64c00d81 AG |
2113 | int ntxq; |
2114 | ||
222f1806 | 2115 | if (!pkt_dev->odev) { |
f9467eae | 2116 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2117 | sprintf(pkt_dev->result, |
2118 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2119 | return; | |
2120 | } | |
2121 | ||
64c00d81 AG |
2122 | /* make sure that we don't pick a non-existing transmit queue */ |
2123 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2124 | |
64c00d81 | 2125 | if (ntxq <= pkt_dev->queue_map_min) { |
294a0b7f JP |
2126 | pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2127 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2128 | pkt_dev->odevname); | |
26e29eed | 2129 | pkt_dev->queue_map_min = (ntxq ?: 1) - 1; |
64c00d81 | 2130 | } |
88271660 | 2131 | if (pkt_dev->queue_map_max >= ntxq) { |
294a0b7f JP |
2132 | pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2133 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2134 | pkt_dev->odevname); | |
26e29eed | 2135 | pkt_dev->queue_map_max = (ntxq ?: 1) - 1; |
64c00d81 AG |
2136 | } |
2137 | ||
222f1806 | 2138 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2139 | |
f404e9a6 | 2140 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
9ea08b12 | 2141 | ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr); |
1da177e4 | 2142 | |
222f1806 | 2143 | /* Set up Dest MAC */ |
9ea08b12 | 2144 | ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac); |
1da177e4 | 2145 | |
222f1806 | 2146 | if (pkt_dev->flags & F_IPV6) { |
4c139b8c AW |
2147 | int i, set = 0, err = 1; |
2148 | struct inet6_dev *idev; | |
2149 | ||
68bf9f0b AW |
2150 | if (pkt_dev->min_pkt_size == 0) { |
2151 | pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr) | |
2152 | + sizeof(struct udphdr) | |
2153 | + sizeof(struct pktgen_hdr) | |
2154 | + pkt_dev->pkt_overhead; | |
2155 | } | |
2156 | ||
222f1806 LC |
2157 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2158 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2159 | set = 1; |
2160 | break; | |
2161 | } | |
2162 | ||
222f1806 LC |
2163 | if (!set) { |
2164 | ||
1da177e4 LT |
2165 | /* |
2166 | * Use linklevel address if unconfigured. | |
2167 | * | |
2168 | * use ipv6_get_lladdr if/when it's get exported | |
2169 | */ | |
2170 | ||
8814c4b5 | 2171 | rcu_read_lock(); |
63adc6fb SH |
2172 | idev = __in6_dev_get(pkt_dev->odev); |
2173 | if (idev) { | |
1da177e4 LT |
2174 | struct inet6_ifaddr *ifp; |
2175 | ||
2176 | read_lock_bh(&idev->lock); | |
4c139b8c AW |
2177 | list_for_each_entry(ifp, &idev->addr_list, if_list) { |
2178 | if ((ifp->scope & IFA_LINK) && | |
f64f9e71 | 2179 | !(ifp->flags & IFA_F_TENTATIVE)) { |
4e3fd7a0 | 2180 | pkt_dev->cur_in6_saddr = ifp->addr; |
1da177e4 LT |
2181 | err = 0; |
2182 | break; | |
2183 | } | |
2184 | } | |
2185 | read_unlock_bh(&idev->lock); | |
2186 | } | |
8814c4b5 | 2187 | rcu_read_unlock(); |
222f1806 | 2188 | if (err) |
f9467eae | 2189 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 | 2190 | } |
222f1806 | 2191 | } else { |
68bf9f0b AW |
2192 | if (pkt_dev->min_pkt_size == 0) { |
2193 | pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr) | |
2194 | + sizeof(struct udphdr) | |
2195 | + sizeof(struct pktgen_hdr) | |
2196 | + pkt_dev->pkt_overhead; | |
2197 | } | |
2198 | ||
1da177e4 LT |
2199 | pkt_dev->saddr_min = 0; |
2200 | pkt_dev->saddr_max = 0; | |
2201 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2202 | |
2203 | struct in_device *in_dev; | |
1da177e4 LT |
2204 | |
2205 | rcu_read_lock(); | |
e5ed6399 | 2206 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2207 | if (in_dev) { |
2208 | if (in_dev->ifa_list) { | |
222f1806 LC |
2209 | pkt_dev->saddr_min = |
2210 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2211 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2212 | } | |
1da177e4 LT |
2213 | } |
2214 | rcu_read_unlock(); | |
222f1806 | 2215 | } else { |
1da177e4 LT |
2216 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2217 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2218 | } | |
2219 | ||
2220 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2221 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2222 | } | |
222f1806 | 2223 | /* Initialize current values. */ |
68bf9f0b AW |
2224 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; |
2225 | if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size) | |
2226 | pkt_dev->max_pkt_size = pkt_dev->min_pkt_size; | |
2227 | ||
222f1806 LC |
2228 | pkt_dev->cur_dst_mac_offset = 0; |
2229 | pkt_dev->cur_src_mac_offset = 0; | |
2230 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2231 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2232 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2233 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2234 | pkt_dev->nflows = 0; |
2235 | } | |
2236 | ||
fd29cf72 SH |
2237 | |
2238 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2239 | { | |
ef87979c | 2240 | ktime_t start_time, end_time; |
417bc4b8 | 2241 | s64 remaining; |
2bc481cf SH |
2242 | struct hrtimer_sleeper t; |
2243 | ||
2244 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2245 | hrtimer_set_expires(&t.timer, spin_until); | |
2246 | ||
43d28b65 | 2247 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2248 | if (remaining <= 0) { |
2249 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2250 | return; |
417bc4b8 | 2251 | } |
2bc481cf | 2252 | |
398f382c | 2253 | start_time = ktime_get(); |
33136d12 ED |
2254 | if (remaining < 100000) { |
2255 | /* for small delays (<100us), just loop until limit is reached */ | |
2256 | do { | |
398f382c DB |
2257 | end_time = ktime_get(); |
2258 | } while (ktime_compare(end_time, spin_until) < 0); | |
33136d12 | 2259 | } else { |
2bc481cf SH |
2260 | /* see do_nanosleep */ |
2261 | hrtimer_init_sleeper(&t, current); | |
2262 | do { | |
2263 | set_current_state(TASK_INTERRUPTIBLE); | |
2264 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2bc481cf SH |
2265 | |
2266 | if (likely(t.task)) | |
1da177e4 | 2267 | schedule(); |
1da177e4 | 2268 | |
2bc481cf SH |
2269 | hrtimer_cancel(&t.timer); |
2270 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2271 | __set_current_state(TASK_RUNNING); | |
398f382c | 2272 | end_time = ktime_get(); |
1da177e4 | 2273 | } |
ef87979c SH |
2274 | |
2275 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2276 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2277 | } |
2278 | ||
16dab72f JHS |
2279 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2280 | { | |
879c7220 | 2281 | pkt_dev->pkt_overhead = LL_RESERVED_SPACE(pkt_dev->odev); |
16dab72f JHS |
2282 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2283 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2284 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2285 | } | |
2286 | ||
648fda74 | 2287 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2288 | { |
648fda74 | 2289 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2290 | } |
2291 | ||
2292 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2293 | { | |
2294 | int flow = pkt_dev->curfl; | |
2295 | ||
2296 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2297 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2298 | /* reset time */ | |
2299 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2300 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2301 | pkt_dev->curfl += 1; |
2302 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2303 | pkt_dev->curfl = 0; /*reset */ | |
2304 | } | |
2305 | } else { | |
33d7c5e5 | 2306 | flow = prandom_u32() % pkt_dev->cflows; |
1211a645 | 2307 | pkt_dev->curfl = flow; |
007a531b | 2308 | |
1211a645 | 2309 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2310 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2311 | pkt_dev->flows[flow].flags = 0; |
2312 | } | |
007a531b JHS |
2313 | } |
2314 | ||
2315 | return pkt_dev->curfl; | |
2316 | } | |
2317 | ||
a553e4a6 JHS |
2318 | |
2319 | #ifdef CONFIG_XFRM | |
2320 | /* If there was already an IPSEC SA, we keep it as is, else | |
2321 | * we go look for it ... | |
2322 | */ | |
bd55775c | 2323 | #define DUMMY_MARK 0 |
fea1ab0f | 2324 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2325 | { |
2326 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
4e58a027 | 2327 | struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id); |
a553e4a6 | 2328 | if (!x) { |
c454997e FD |
2329 | |
2330 | if (pkt_dev->spi) { | |
2331 | /* We need as quick as possible to find the right SA | |
2332 | * Searching with minimum criteria to archieve this. | |
2333 | */ | |
2334 | x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET); | |
2335 | } else { | |
2336 | /* slow path: we dont already have xfrm_state */ | |
2337 | x = xfrm_stateonly_find(pn->net, DUMMY_MARK, | |
2338 | (xfrm_address_t *)&pkt_dev->cur_daddr, | |
2339 | (xfrm_address_t *)&pkt_dev->cur_saddr, | |
2340 | AF_INET, | |
2341 | pkt_dev->ipsmode, | |
2342 | pkt_dev->ipsproto, 0); | |
2343 | } | |
a553e4a6 JHS |
2344 | if (x) { |
2345 | pkt_dev->flows[flow].x = x; | |
2346 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2347 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2348 | } |
2349 | ||
2350 | } | |
2351 | } | |
2352 | #endif | |
fd2ea0a7 DM |
2353 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2354 | { | |
e6fce5b9 RO |
2355 | |
2356 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2357 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2358 | ||
896a7cf8 | 2359 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2360 | __u16 t; |
2361 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
33d7c5e5 | 2362 | t = prandom_u32() % |
fd2ea0a7 DM |
2363 | (pkt_dev->queue_map_max - |
2364 | pkt_dev->queue_map_min + 1) | |
2365 | + pkt_dev->queue_map_min; | |
2366 | } else { | |
2367 | t = pkt_dev->cur_queue_map + 1; | |
2368 | if (t > pkt_dev->queue_map_max) | |
2369 | t = pkt_dev->queue_map_min; | |
2370 | } | |
2371 | pkt_dev->cur_queue_map = t; | |
2372 | } | |
bfdbc0ac | 2373 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2374 | } |
2375 | ||
1da177e4 LT |
2376 | /* Increment/randomize headers according to flags and current values |
2377 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2378 | */ | |
222f1806 LC |
2379 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2380 | { | |
2381 | __u32 imn; | |
2382 | __u32 imx; | |
2383 | int flow = 0; | |
1da177e4 | 2384 | |
007a531b JHS |
2385 | if (pkt_dev->cflows) |
2386 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2387 | |
2388 | /* Deal with source MAC */ | |
222f1806 LC |
2389 | if (pkt_dev->src_mac_count > 1) { |
2390 | __u32 mc; | |
2391 | __u32 tmp; | |
2392 | ||
2393 | if (pkt_dev->flags & F_MACSRC_RND) | |
33d7c5e5 | 2394 | mc = prandom_u32() % pkt_dev->src_mac_count; |
222f1806 LC |
2395 | else { |
2396 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2397 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2398 | pkt_dev->src_mac_count) |
2399 | pkt_dev->cur_src_mac_offset = 0; | |
2400 | } | |
2401 | ||
2402 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2403 | pkt_dev->hh[11] = tmp; | |
2404 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2405 | pkt_dev->hh[10] = tmp; | |
2406 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2407 | pkt_dev->hh[9] = tmp; | |
2408 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2409 | pkt_dev->hh[8] = tmp; | |
2410 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2411 | pkt_dev->hh[7] = tmp; | |
2412 | } | |
2413 | ||
2414 | /* Deal with Destination MAC */ | |
2415 | if (pkt_dev->dst_mac_count > 1) { | |
2416 | __u32 mc; | |
2417 | __u32 tmp; | |
2418 | ||
2419 | if (pkt_dev->flags & F_MACDST_RND) | |
33d7c5e5 | 2420 | mc = prandom_u32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2421 | |
2422 | else { | |
2423 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2424 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2425 | pkt_dev->dst_mac_count) { |
2426 | pkt_dev->cur_dst_mac_offset = 0; | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2431 | pkt_dev->hh[5] = tmp; | |
2432 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2433 | pkt_dev->hh[4] = tmp; | |
2434 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2435 | pkt_dev->hh[3] = tmp; | |
2436 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2437 | pkt_dev->hh[2] = tmp; | |
2438 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2439 | pkt_dev->hh[1] = tmp; | |
2440 | } | |
2441 | ||
ca6549af | 2442 | if (pkt_dev->flags & F_MPLS_RND) { |
95c96174 | 2443 | unsigned int i; |
e71a4783 | 2444 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2445 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2446 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
33d7c5e5 | 2447 | ((__force __be32)prandom_u32() & |
ca6549af SW |
2448 | htonl(0x000fffff)); |
2449 | } | |
2450 | ||
34954ddc | 2451 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
33d7c5e5 | 2452 | pkt_dev->vlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2453 | } |
2454 | ||
2455 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
33d7c5e5 | 2456 | pkt_dev->svlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2457 | } |
2458 | ||
222f1806 LC |
2459 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2460 | if (pkt_dev->flags & F_UDPSRC_RND) | |
33d7c5e5 | 2461 | pkt_dev->cur_udp_src = prandom_u32() % |
5fa6fc76 SH |
2462 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) |
2463 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2464 | |
2465 | else { | |
1da177e4 LT |
2466 | pkt_dev->cur_udp_src++; |
2467 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2468 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2469 | } |
2470 | } | |
2471 | ||
2472 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2473 | if (pkt_dev->flags & F_UDPDST_RND) { | |
33d7c5e5 | 2474 | pkt_dev->cur_udp_dst = prandom_u32() % |
5fa6fc76 SH |
2475 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) |
2476 | + pkt_dev->udp_dst_min; | |
222f1806 | 2477 | } else { |
1da177e4 | 2478 | pkt_dev->cur_udp_dst++; |
222f1806 | 2479 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2480 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2481 | } |
2482 | } | |
1da177e4 LT |
2483 | |
2484 | if (!(pkt_dev->flags & F_IPV6)) { | |
2485 | ||
63adc6fb SH |
2486 | imn = ntohl(pkt_dev->saddr_min); |
2487 | imx = ntohl(pkt_dev->saddr_max); | |
2488 | if (imn < imx) { | |
1da177e4 | 2489 | __u32 t; |
222f1806 | 2490 | if (pkt_dev->flags & F_IPSRC_RND) |
33d7c5e5 | 2491 | t = prandom_u32() % (imx - imn) + imn; |
1da177e4 LT |
2492 | else { |
2493 | t = ntohl(pkt_dev->cur_saddr); | |
2494 | t++; | |
63adc6fb | 2495 | if (t > imx) |
1da177e4 | 2496 | t = imn; |
63adc6fb | 2497 | |
1da177e4 LT |
2498 | } |
2499 | pkt_dev->cur_saddr = htonl(t); | |
2500 | } | |
222f1806 | 2501 | |
007a531b | 2502 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2503 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2504 | } else { | |
252e3346 AV |
2505 | imn = ntohl(pkt_dev->daddr_min); |
2506 | imx = ntohl(pkt_dev->daddr_max); | |
2507 | if (imn < imx) { | |
1da177e4 | 2508 | __u32 t; |
252e3346 | 2509 | __be32 s; |
1da177e4 LT |
2510 | if (pkt_dev->flags & F_IPDST_RND) { |
2511 | ||
70e3ba72 | 2512 | do { |
33d7c5e5 AM |
2513 | t = prandom_u32() % |
2514 | (imx - imn) + imn; | |
252e3346 | 2515 | s = htonl(t); |
70e3ba72 AM |
2516 | } while (ipv4_is_loopback(s) || |
2517 | ipv4_is_multicast(s) || | |
2518 | ipv4_is_lbcast(s) || | |
2519 | ipv4_is_zeronet(s) || | |
2520 | ipv4_is_local_multicast(s)); | |
252e3346 AV |
2521 | pkt_dev->cur_daddr = s; |
2522 | } else { | |
1da177e4 LT |
2523 | t = ntohl(pkt_dev->cur_daddr); |
2524 | t++; | |
2525 | if (t > imx) { | |
2526 | t = imn; | |
2527 | } | |
2528 | pkt_dev->cur_daddr = htonl(t); | |
2529 | } | |
2530 | } | |
222f1806 | 2531 | if (pkt_dev->cflows) { |
007a531b | 2532 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2533 | pkt_dev->flows[flow].cur_daddr = |
2534 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2535 | #ifdef CONFIG_XFRM |
2536 | if (pkt_dev->flags & F_IPSEC_ON) | |
2537 | get_ipsec_sa(pkt_dev, flow); | |
2538 | #endif | |
1da177e4 LT |
2539 | pkt_dev->nflows++; |
2540 | } | |
2541 | } | |
222f1806 LC |
2542 | } else { /* IPV6 * */ |
2543 | ||
06e30411 | 2544 | if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { |
1da177e4 LT |
2545 | int i; |
2546 | ||
2547 | /* Only random destinations yet */ | |
2548 | ||
222f1806 | 2549 | for (i = 0; i < 4; i++) { |
1da177e4 | 2550 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
33d7c5e5 | 2551 | (((__force __be32)prandom_u32() | |
222f1806 LC |
2552 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2553 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2554 | } |
222f1806 | 2555 | } |
1da177e4 LT |
2556 | } |
2557 | ||
222f1806 LC |
2558 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2559 | __u32 t; | |
2560 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
33d7c5e5 | 2561 | t = prandom_u32() % |
5fa6fc76 SH |
2562 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) |
2563 | + pkt_dev->min_pkt_size; | |
222f1806 | 2564 | } else { |
1da177e4 | 2565 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2566 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2567 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2568 | } |
2569 | pkt_dev->cur_pkt_size = t; | |
2570 | } | |
1da177e4 | 2571 | |
fd2ea0a7 | 2572 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2573 | |
1da177e4 LT |
2574 | pkt_dev->flows[flow].count++; |
2575 | } | |
2576 | ||
a553e4a6 JHS |
2577 | |
2578 | #ifdef CONFIG_XFRM | |
5537a055 | 2579 | static u32 pktgen_dst_metrics[RTAX_MAX + 1] = { |
cf93d47e FD |
2580 | |
2581 | [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */ | |
2582 | }; | |
2583 | ||
a553e4a6 JHS |
2584 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) |
2585 | { | |
2586 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2587 | int err = 0; | |
6de9ace4 | 2588 | struct net *net = dev_net(pkt_dev->odev); |
a553e4a6 JHS |
2589 | |
2590 | if (!x) | |
2591 | return 0; | |
2592 | /* XXX: we dont support tunnel mode for now until | |
2593 | * we resolve the dst issue */ | |
cf93d47e | 2594 | if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0)) |
a553e4a6 JHS |
2595 | return 0; |
2596 | ||
cf93d47e FD |
2597 | /* But when user specify an valid SPI, transformation |
2598 | * supports both transport/tunnel mode + ESP/AH type. | |
2599 | */ | |
2600 | if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0)) | |
2601 | skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF; | |
2602 | ||
2603 | rcu_read_lock_bh(); | |
13996378 | 2604 | err = x->outer_mode->output(x, skb); |
cf93d47e | 2605 | rcu_read_unlock_bh(); |
6de9ace4 FD |
2606 | if (err) { |
2607 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR); | |
a553e4a6 | 2608 | goto error; |
6de9ace4 | 2609 | } |
a553e4a6 | 2610 | err = x->type->output(x, skb); |
6de9ace4 FD |
2611 | if (err) { |
2612 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR); | |
a553e4a6 | 2613 | goto error; |
6de9ace4 | 2614 | } |
0af0a413 | 2615 | spin_lock_bh(&x->lock); |
63adc6fb | 2616 | x->curlft.bytes += skb->len; |
a553e4a6 | 2617 | x->curlft.packets++; |
0af0a413 | 2618 | spin_unlock_bh(&x->lock); |
a553e4a6 | 2619 | error: |
a553e4a6 JHS |
2620 | return err; |
2621 | } | |
2622 | ||
475ac1e4 | 2623 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2624 | { |
2625 | if (pkt_dev->cflows) { | |
2626 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2627 | int i; |
2628 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2629 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2630 | if (x) { | |
2631 | xfrm_state_put(x); | |
2632 | pkt_dev->flows[i].x = NULL; | |
2633 | } | |
2634 | } | |
2635 | } | |
2636 | } | |
2637 | ||
475ac1e4 | 2638 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2639 | struct sk_buff *skb, __be16 protocol) |
2640 | { | |
2641 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2642 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2643 | int nhead = 0; | |
2644 | if (x) { | |
d4969581 | 2645 | struct ethhdr *eth; |
3868204d | 2646 | struct iphdr *iph; |
d4969581 | 2647 | int ret; |
3868204d | 2648 | |
a553e4a6 | 2649 | nhead = x->props.header_len - skb_headroom(skb); |
63adc6fb | 2650 | if (nhead > 0) { |
a553e4a6 JHS |
2651 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2652 | if (ret < 0) { | |
f9467eae JP |
2653 | pr_err("Error expanding ipsec packet %d\n", |
2654 | ret); | |
b4bb4ac8 | 2655 | goto err; |
a553e4a6 JHS |
2656 | } |
2657 | } | |
2658 | ||
2659 | /* ipsec is not expecting ll header */ | |
2660 | skb_pull(skb, ETH_HLEN); | |
2661 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2662 | if (ret) { | |
f9467eae | 2663 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2664 | goto err; |
a553e4a6 JHS |
2665 | } |
2666 | /* restore ll */ | |
d4969581 ED |
2667 | eth = (struct ethhdr *)skb_push(skb, ETH_HLEN); |
2668 | memcpy(eth, pkt_dev->hh, 2 * ETH_ALEN); | |
2669 | eth->h_proto = protocol; | |
3868204d | 2670 | |
2671 | /* Update IPv4 header len as well as checksum value */ | |
2672 | iph = ip_hdr(skb); | |
2673 | iph->tot_len = htons(skb->len - ETH_HLEN); | |
2674 | ip_send_check(iph); | |
a553e4a6 JHS |
2675 | } |
2676 | } | |
2677 | return 1; | |
b4bb4ac8 IJ |
2678 | err: |
2679 | kfree_skb(skb); | |
2680 | return 0; | |
a553e4a6 JHS |
2681 | } |
2682 | #endif | |
2683 | ||
ca6549af SW |
2684 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2685 | { | |
95c96174 | 2686 | unsigned int i; |
63adc6fb | 2687 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2688 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2689 | |
ca6549af SW |
2690 | mpls--; |
2691 | *mpls |= MPLS_STACK_BOTTOM; | |
2692 | } | |
2693 | ||
0f37c605 AV |
2694 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2695 | unsigned int prio) | |
2696 | { | |
2697 | return htons(id | (cfi << 12) | (prio << 13)); | |
2698 | } | |
2699 | ||
26ad7879 ED |
2700 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2701 | int datalen) | |
2702 | { | |
2703 | struct timeval timestamp; | |
2704 | struct pktgen_hdr *pgh; | |
2705 | ||
2706 | pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); | |
2707 | datalen -= sizeof(*pgh); | |
2708 | ||
2709 | if (pkt_dev->nfrags <= 0) { | |
05aebe2e | 2710 | memset(skb_put(skb, datalen), 0, datalen); |
26ad7879 ED |
2711 | } else { |
2712 | int frags = pkt_dev->nfrags; | |
2713 | int i, len; | |
7d36a991 | 2714 | int frag_len; |
26ad7879 ED |
2715 | |
2716 | ||
2717 | if (frags > MAX_SKB_FRAGS) | |
2718 | frags = MAX_SKB_FRAGS; | |
2719 | len = datalen - frags * PAGE_SIZE; | |
2720 | if (len > 0) { | |
2721 | memset(skb_put(skb, len), 0, len); | |
2722 | datalen = frags * PAGE_SIZE; | |
2723 | } | |
2724 | ||
2725 | i = 0; | |
7d36a991 | 2726 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2727 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2728 | while (datalen > 0) { |
2729 | if (unlikely(!pkt_dev->page)) { | |
2730 | int node = numa_node_id(); | |
2731 | ||
2732 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2733 | node = pkt_dev->node; | |
2734 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2735 | if (!pkt_dev->page) | |
2736 | break; | |
2737 | } | |
a0bec1cd | 2738 | get_page(pkt_dev->page); |
ea2ab693 | 2739 | skb_frag_set_page(skb, i, pkt_dev->page); |
26ad7879 | 2740 | skb_shinfo(skb)->frags[i].page_offset = 0; |
7d36a991 | 2741 | /*last fragment, fill rest of data*/ |
2742 | if (i == (frags - 1)) | |
9e903e08 ED |
2743 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], |
2744 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); | |
7d36a991 | 2745 | else |
9e903e08 ED |
2746 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); |
2747 | datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2748 | skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2749 | skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
26ad7879 ED |
2750 | i++; |
2751 | skb_shinfo(skb)->nr_frags = i; | |
2752 | } | |
26ad7879 ED |
2753 | } |
2754 | ||
2755 | /* Stamp the time, and sequence number, | |
2756 | * convert them to network byte order | |
2757 | */ | |
2758 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2759 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2760 | ||
afb84b62 JDB |
2761 | if (pkt_dev->flags & F_NO_TIMESTAMP) { |
2762 | pgh->tv_sec = 0; | |
2763 | pgh->tv_usec = 0; | |
2764 | } else { | |
2765 | do_gettimeofday(×tamp); | |
2766 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2767 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2768 | } | |
26ad7879 ED |
2769 | } |
2770 | ||
7a6e288d DB |
2771 | static struct sk_buff *pktgen_alloc_skb(struct net_device *dev, |
2772 | struct pktgen_dev *pkt_dev, | |
2773 | unsigned int extralen) | |
2774 | { | |
2775 | struct sk_buff *skb = NULL; | |
2776 | unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen + | |
2777 | pkt_dev->pkt_overhead; | |
2778 | ||
2779 | if (pkt_dev->flags & F_NODE) { | |
2780 | int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id(); | |
2781 | ||
2782 | skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node); | |
2783 | if (likely(skb)) { | |
2784 | skb_reserve(skb, NET_SKB_PAD); | |
2785 | skb->dev = dev; | |
2786 | } | |
2787 | } else { | |
2788 | skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT); | |
2789 | } | |
879c7220 | 2790 | skb_reserve(skb, LL_RESERVED_SPACE(dev)); |
7a6e288d DB |
2791 | |
2792 | return skb; | |
2793 | } | |
2794 | ||
222f1806 LC |
2795 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2796 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2797 | { |
2798 | struct sk_buff *skb = NULL; | |
2799 | __u8 *eth; | |
2800 | struct udphdr *udph; | |
2801 | int datalen, iplen; | |
2802 | struct iphdr *iph; | |
d5f1ce9a | 2803 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2804 | __be32 *mpls; |
34954ddc FF |
2805 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2806 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2807 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2808 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2809 | u16 queue_map; |
ca6549af SW |
2810 | |
2811 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2812 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2813 | |
34954ddc | 2814 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2815 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2816 | |
64053bee RO |
2817 | /* Update any of the values, used when we're incrementing various |
2818 | * fields. | |
2819 | */ | |
2820 | mod_cur_headers(pkt_dev); | |
eb589063 | 2821 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2822 | |
7ac5459e | 2823 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 | 2824 | |
7a6e288d | 2825 | skb = pktgen_alloc_skb(odev, pkt_dev, datalen); |
1da177e4 LT |
2826 | if (!skb) { |
2827 | sprintf(pkt_dev->result, "No memory"); | |
2828 | return NULL; | |
2829 | } | |
2830 | ||
7a6e288d | 2831 | prefetchw(skb->data); |
7ac5459e | 2832 | skb_reserve(skb, datalen); |
1da177e4 LT |
2833 | |
2834 | /* Reserve for ethernet and IP header */ | |
2835 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2836 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2837 | if (pkt_dev->nr_labels) | |
2838 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2839 | |
2840 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2841 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2842 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2843 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2844 | pkt_dev->svlan_cfi, | |
2845 | pkt_dev->svlan_p); | |
34954ddc | 2846 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2847 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2848 | } |
2849 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2850 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2851 | pkt_dev->vlan_cfi, | |
2852 | pkt_dev->vlan_p); | |
34954ddc | 2853 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2854 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2855 | } |
2856 | ||
525cebed TG |
2857 | skb_set_mac_header(skb, 0); |
2858 | skb_set_network_header(skb, skb->len); | |
2859 | iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr)); | |
2860 | ||
2861 | skb_set_transport_header(skb, skb->len); | |
2862 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2863 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2864 | skb->priority = pkt_dev->skb_priority; |
2865 | ||
1da177e4 | 2866 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2867 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2868 | |
ca6549af SW |
2869 | /* Eth + IPh + UDPh + mpls */ |
2870 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2871 | pkt_dev->pkt_overhead; |
6af773e7 | 2872 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2873 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2874 | |
1da177e4 LT |
2875 | udph->source = htons(pkt_dev->cur_udp_src); |
2876 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 | 2877 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
c26bf4a5 | 2878 | udph->check = 0; |
1da177e4 LT |
2879 | |
2880 | iph->ihl = 5; | |
2881 | iph->version = 4; | |
2882 | iph->ttl = 32; | |
1ca7768c | 2883 | iph->tos = pkt_dev->tos; |
222f1806 | 2884 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2885 | iph->saddr = pkt_dev->cur_saddr; |
2886 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2887 | iph->id = htons(pkt_dev->ip_id); |
2888 | pkt_dev->ip_id++; | |
1da177e4 LT |
2889 | iph->frag_off = 0; |
2890 | iplen = 20 + 8 + datalen; | |
2891 | iph->tot_len = htons(iplen); | |
03c633e7 | 2892 | ip_send_check(iph); |
ca6549af | 2893 | skb->protocol = protocol; |
1da177e4 LT |
2894 | skb->dev = odev; |
2895 | skb->pkt_type = PACKET_HOST; | |
c26bf4a5 | 2896 | |
7744b5f3 SD |
2897 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
2898 | ||
c26bf4a5 TG |
2899 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
2900 | skb->ip_summed = CHECKSUM_NONE; | |
2901 | } else if (odev->features & NETIF_F_V4_CSUM) { | |
2902 | skb->ip_summed = CHECKSUM_PARTIAL; | |
2903 | skb->csum = 0; | |
7744b5f3 | 2904 | udp4_hwcsum(skb, iph->saddr, iph->daddr); |
c26bf4a5 | 2905 | } else { |
7744b5f3 | 2906 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0); |
c26bf4a5 TG |
2907 | |
2908 | /* add protocol-dependent pseudo-header */ | |
7744b5f3 | 2909 | udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr, |
c26bf4a5 TG |
2910 | datalen + 8, IPPROTO_UDP, csum); |
2911 | ||
2912 | if (udph->check == 0) | |
2913 | udph->check = CSUM_MANGLED_0; | |
2914 | } | |
2915 | ||
a553e4a6 JHS |
2916 | #ifdef CONFIG_XFRM |
2917 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2918 | return NULL; | |
2919 | #endif | |
2920 | ||
1da177e4 LT |
2921 | return skb; |
2922 | } | |
2923 | ||
222f1806 LC |
2924 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2925 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2926 | { |
2927 | struct sk_buff *skb = NULL; | |
2928 | __u8 *eth; | |
2929 | struct udphdr *udph; | |
c26bf4a5 | 2930 | int datalen, udplen; |
1da177e4 | 2931 | struct ipv6hdr *iph; |
d5f1ce9a | 2932 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2933 | __be32 *mpls; |
34954ddc FF |
2934 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2935 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2936 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2937 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2938 | u16 queue_map; |
ca6549af SW |
2939 | |
2940 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2941 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2942 | |
34954ddc | 2943 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2944 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2945 | |
64053bee RO |
2946 | /* Update any of the values, used when we're incrementing various |
2947 | * fields. | |
2948 | */ | |
2949 | mod_cur_headers(pkt_dev); | |
eb589063 | 2950 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2951 | |
7a6e288d | 2952 | skb = pktgen_alloc_skb(odev, pkt_dev, 16); |
1da177e4 LT |
2953 | if (!skb) { |
2954 | sprintf(pkt_dev->result, "No memory"); | |
2955 | return NULL; | |
2956 | } | |
2957 | ||
7a6e288d | 2958 | prefetchw(skb->data); |
1da177e4 LT |
2959 | skb_reserve(skb, 16); |
2960 | ||
2961 | /* Reserve for ethernet and IP header */ | |
2962 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2963 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2964 | if (pkt_dev->nr_labels) | |
2965 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2966 | |
2967 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2968 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2969 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2970 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2971 | pkt_dev->svlan_cfi, | |
2972 | pkt_dev->svlan_p); | |
34954ddc | 2973 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2974 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2975 | } |
2976 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2977 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2978 | pkt_dev->vlan_cfi, | |
2979 | pkt_dev->vlan_p); | |
34954ddc | 2980 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2981 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2982 | } |
2983 | ||
525cebed TG |
2984 | skb_set_mac_header(skb, 0); |
2985 | skb_set_network_header(skb, skb->len); | |
2986 | iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr)); | |
2987 | ||
2988 | skb_set_transport_header(skb, skb->len); | |
2989 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2990 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2991 | skb->priority = pkt_dev->skb_priority; |
1da177e4 | 2992 | |
1da177e4 | 2993 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2994 | *(__be16 *) ð[12] = protocol; |
64053bee | 2995 | |
ca6549af SW |
2996 | /* Eth + IPh + UDPh + mpls */ |
2997 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2998 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 2999 | pkt_dev->pkt_overhead; |
1da177e4 | 3000 | |
5aa8b572 | 3001 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 | 3002 | datalen = sizeof(struct pktgen_hdr); |
e87cc472 | 3003 | net_info_ratelimited("increased datalen to %d\n", datalen); |
1da177e4 LT |
3004 | } |
3005 | ||
c26bf4a5 | 3006 | udplen = datalen + sizeof(struct udphdr); |
1da177e4 LT |
3007 | udph->source = htons(pkt_dev->cur_udp_src); |
3008 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
c26bf4a5 TG |
3009 | udph->len = htons(udplen); |
3010 | udph->check = 0; | |
1da177e4 | 3011 | |
d5f1ce9a | 3012 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 3013 | |
1ca7768c FF |
3014 | if (pkt_dev->traffic_class) { |
3015 | /* Version + traffic class + flow (0) */ | |
252e3346 | 3016 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
3017 | } |
3018 | ||
1da177e4 LT |
3019 | iph->hop_limit = 32; |
3020 | ||
c26bf4a5 | 3021 | iph->payload_len = htons(udplen); |
1da177e4 LT |
3022 | iph->nexthdr = IPPROTO_UDP; |
3023 | ||
4e3fd7a0 AD |
3024 | iph->daddr = pkt_dev->cur_in6_daddr; |
3025 | iph->saddr = pkt_dev->cur_in6_saddr; | |
1da177e4 | 3026 | |
ca6549af | 3027 | skb->protocol = protocol; |
1da177e4 LT |
3028 | skb->dev = odev; |
3029 | skb->pkt_type = PACKET_HOST; | |
3030 | ||
7744b5f3 SD |
3031 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
3032 | ||
c26bf4a5 TG |
3033 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
3034 | skb->ip_summed = CHECKSUM_NONE; | |
3035 | } else if (odev->features & NETIF_F_V6_CSUM) { | |
3036 | skb->ip_summed = CHECKSUM_PARTIAL; | |
3037 | skb->csum_start = skb_transport_header(skb) - skb->head; | |
3038 | skb->csum_offset = offsetof(struct udphdr, check); | |
3039 | udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0); | |
3040 | } else { | |
7744b5f3 | 3041 | __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0); |
c26bf4a5 TG |
3042 | |
3043 | /* add protocol-dependent pseudo-header */ | |
3044 | udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum); | |
3045 | ||
3046 | if (udph->check == 0) | |
3047 | udph->check = CSUM_MANGLED_0; | |
3048 | } | |
3049 | ||
1da177e4 LT |
3050 | return skb; |
3051 | } | |
3052 | ||
475ac1e4 SH |
3053 | static struct sk_buff *fill_packet(struct net_device *odev, |
3054 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3055 | { |
222f1806 | 3056 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
3057 | return fill_packet_ipv6(odev, pkt_dev); |
3058 | else | |
3059 | return fill_packet_ipv4(odev, pkt_dev); | |
3060 | } | |
3061 | ||
222f1806 | 3062 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 3063 | { |
222f1806 LC |
3064 | pkt_dev->seq_num = 1; |
3065 | pkt_dev->idle_acc = 0; | |
1da177e4 | 3066 | pkt_dev->sofar = 0; |
222f1806 LC |
3067 | pkt_dev->tx_bytes = 0; |
3068 | pkt_dev->errors = 0; | |
1da177e4 LT |
3069 | } |
3070 | ||
3071 | /* Set up structure for sending pkts, clear counters */ | |
3072 | ||
3073 | static void pktgen_run(struct pktgen_thread *t) | |
3074 | { | |
c26a8016 | 3075 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3076 | int started = 0; |
3077 | ||
f9467eae | 3078 | func_enter(); |
1da177e4 | 3079 | |
8788370a JDB |
3080 | rcu_read_lock(); |
3081 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
1da177e4 LT |
3082 | |
3083 | /* | |
3084 | * setup odev and create initial packet. | |
3085 | */ | |
3086 | pktgen_setup_inject(pkt_dev); | |
3087 | ||
222f1806 | 3088 | if (pkt_dev->odev) { |
1da177e4 | 3089 | pktgen_clear_counters(pkt_dev); |
1da177e4 | 3090 | pkt_dev->skb = NULL; |
398f382c | 3091 | pkt_dev->started_at = pkt_dev->next_tx = ktime_get(); |
fd29cf72 | 3092 | |
16dab72f | 3093 | set_pkt_overhead(pkt_dev); |
222f1806 | 3094 | |
1da177e4 | 3095 | strcpy(pkt_dev->result, "Starting"); |
8788370a | 3096 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3097 | started++; |
222f1806 | 3098 | } else |
1da177e4 LT |
3099 | strcpy(pkt_dev->result, "Error starting"); |
3100 | } | |
8788370a | 3101 | rcu_read_unlock(); |
222f1806 LC |
3102 | if (started) |
3103 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3104 | } |
3105 | ||
4e58a027 | 3106 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn) |
1da177e4 | 3107 | { |
cdcdbe0b | 3108 | struct pktgen_thread *t; |
1da177e4 | 3109 | |
f9467eae | 3110 | func_enter(); |
1da177e4 | 3111 | |
6146e6a4 | 3112 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3113 | |
4e58a027 | 3114 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
95ed63f7 | 3115 | t->control |= T_STOP; |
cdcdbe0b | 3116 | |
6146e6a4 | 3117 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3118 | } |
3119 | ||
648fda74 | 3120 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3121 | { |
648fda74 | 3122 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3123 | |
8788370a JDB |
3124 | rcu_read_lock(); |
3125 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
3126 | if (pkt_dev->running) { | |
3127 | rcu_read_unlock(); | |
648fda74 | 3128 | return 1; |
8788370a JDB |
3129 | } |
3130 | rcu_read_unlock(); | |
648fda74 | 3131 | return 0; |
1da177e4 LT |
3132 | } |
3133 | ||
222f1806 | 3134 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3135 | { |
222f1806 | 3136 | while (thread_is_running(t)) { |
1da177e4 | 3137 | |
222f1806 | 3138 | msleep_interruptible(100); |
1da177e4 | 3139 | |
222f1806 LC |
3140 | if (signal_pending(current)) |
3141 | goto signal; | |
222f1806 | 3142 | } |
222f1806 LC |
3143 | return 1; |
3144 | signal: | |
3145 | return 0; | |
1da177e4 LT |
3146 | } |
3147 | ||
4e58a027 | 3148 | static int pktgen_wait_all_threads_run(struct pktgen_net *pn) |
1da177e4 | 3149 | { |
cdcdbe0b | 3150 | struct pktgen_thread *t; |
1da177e4 | 3151 | int sig = 1; |
222f1806 | 3152 | |
6146e6a4 | 3153 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3154 | |
4e58a027 | 3155 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
1da177e4 | 3156 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3157 | if (sig == 0) |
3158 | break; | |
1da177e4 | 3159 | } |
cdcdbe0b LC |
3160 | |
3161 | if (sig == 0) | |
4e58a027 | 3162 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3163 | t->control |= (T_STOP); |
cdcdbe0b | 3164 | |
6146e6a4 | 3165 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3166 | return sig; |
3167 | } | |
3168 | ||
4e58a027 | 3169 | static void pktgen_run_all_threads(struct pktgen_net *pn) |
1da177e4 | 3170 | { |
cdcdbe0b | 3171 | struct pktgen_thread *t; |
1da177e4 | 3172 | |
f9467eae | 3173 | func_enter(); |
1da177e4 | 3174 | |
6146e6a4 | 3175 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3176 | |
4e58a027 | 3177 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3178 | t->control |= (T_RUN); |
cdcdbe0b | 3179 | |
6146e6a4 | 3180 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3181 | |
63adc6fb SH |
3182 | /* Propagate thread->control */ |
3183 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3184 | |
4e58a027 | 3185 | pktgen_wait_all_threads_run(pn); |
1da177e4 LT |
3186 | } |
3187 | ||
4e58a027 | 3188 | static void pktgen_reset_all_threads(struct pktgen_net *pn) |
eb37b41c JB |
3189 | { |
3190 | struct pktgen_thread *t; | |
3191 | ||
f9467eae | 3192 | func_enter(); |
eb37b41c JB |
3193 | |
3194 | mutex_lock(&pktgen_thread_lock); | |
3195 | ||
4e58a027 | 3196 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
eb37b41c JB |
3197 | t->control |= (T_REMDEVALL); |
3198 | ||
3199 | mutex_unlock(&pktgen_thread_lock); | |
3200 | ||
63adc6fb SH |
3201 | /* Propagate thread->control */ |
3202 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c | 3203 | |
4e58a027 | 3204 | pktgen_wait_all_threads_run(pn); |
eb37b41c JB |
3205 | } |
3206 | ||
1da177e4 LT |
3207 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3208 | { | |
fd29cf72 | 3209 | __u64 bps, mbps, pps; |
222f1806 | 3210 | char *p = pkt_dev->result; |
fd29cf72 SH |
3211 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3212 | pkt_dev->started_at); | |
3213 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3214 | ||
03a14ab1 | 3215 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3216 | (unsigned long long)ktime_to_us(elapsed), |
3217 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3218 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3219 | (unsigned long long)pkt_dev->sofar, |
3220 | pkt_dev->cur_pkt_size, nr_frags); | |
3221 | ||
fd29cf72 SH |
3222 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3223 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3224 | |
3225 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3226 | ||
3227 | mbps = bps; | |
3228 | do_div(mbps, 1000000); | |
3229 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3230 | (unsigned long long)pps, | |
3231 | (unsigned long long)mbps, | |
3232 | (unsigned long long)bps, | |
3233 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3234 | } |
1da177e4 LT |
3235 | |
3236 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3237 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3238 | { |
222f1806 | 3239 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3240 | |
222f1806 | 3241 | if (!pkt_dev->running) { |
294a0b7f JP |
3242 | pr_warn("interface: %s is already stopped\n", |
3243 | pkt_dev->odevname); | |
222f1806 LC |
3244 | return -EINVAL; |
3245 | } | |
1da177e4 | 3246 | |
8788370a | 3247 | pkt_dev->running = 0; |
3bda06a3 SH |
3248 | kfree_skb(pkt_dev->skb); |
3249 | pkt_dev->skb = NULL; | |
398f382c | 3250 | pkt_dev->stopped_at = ktime_get(); |
1da177e4 | 3251 | |
95ed63f7 | 3252 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3253 | |
222f1806 | 3254 | return 0; |
1da177e4 LT |
3255 | } |
3256 | ||
222f1806 | 3257 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3258 | { |
c26a8016 | 3259 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3260 | |
8788370a JDB |
3261 | rcu_read_lock(); |
3262 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
c26a8016 | 3263 | if (!pkt_dev->running) |
222f1806 LC |
3264 | continue; |
3265 | if (best == NULL) | |
c26a8016 | 3266 | best = pkt_dev; |
398f382c | 3267 | else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0) |
c26a8016 | 3268 | best = pkt_dev; |
1da177e4 | 3269 | } |
8788370a JDB |
3270 | rcu_read_unlock(); |
3271 | ||
222f1806 | 3272 | return best; |
1da177e4 LT |
3273 | } |
3274 | ||
222f1806 LC |
3275 | static void pktgen_stop(struct pktgen_thread *t) |
3276 | { | |
c26a8016 | 3277 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3278 | |
f9467eae | 3279 | func_enter(); |
1da177e4 | 3280 | |
8788370a | 3281 | rcu_read_lock(); |
1da177e4 | 3282 | |
8788370a | 3283 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { |
c26a8016 | 3284 | pktgen_stop_device(pkt_dev); |
95ed63f7 | 3285 | } |
1da177e4 | 3286 | |
8788370a | 3287 | rcu_read_unlock(); |
1da177e4 LT |
3288 | } |
3289 | ||
95ed63f7 AK |
3290 | /* |
3291 | * one of our devices needs to be removed - find it | |
3292 | * and remove it | |
3293 | */ | |
3294 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3295 | { | |
c26a8016 LC |
3296 | struct list_head *q, *n; |
3297 | struct pktgen_dev *cur; | |
95ed63f7 | 3298 | |
f9467eae | 3299 | func_enter(); |
95ed63f7 | 3300 | |
c26a8016 LC |
3301 | list_for_each_safe(q, n, &t->if_list) { |
3302 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3303 | |
222f1806 LC |
3304 | if (!cur->removal_mark) |
3305 | continue; | |
95ed63f7 | 3306 | |
86dc1ad2 | 3307 | kfree_skb(cur->skb); |
95ed63f7 AK |
3308 | cur->skb = NULL; |
3309 | ||
3310 | pktgen_remove_device(t, cur); | |
3311 | ||
3312 | break; | |
3313 | } | |
95ed63f7 AK |
3314 | } |
3315 | ||
222f1806 | 3316 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3317 | { |
c26a8016 LC |
3318 | struct list_head *q, *n; |
3319 | struct pktgen_dev *cur; | |
222f1806 | 3320 | |
f9467eae JP |
3321 | func_enter(); |
3322 | ||
222f1806 | 3323 | /* Remove all devices, free mem */ |
95ed63f7 | 3324 | |
c26a8016 LC |
3325 | list_for_each_safe(q, n, &t->if_list) { |
3326 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3327 | |
86dc1ad2 | 3328 | kfree_skb(cur->skb); |
95ed63f7 AK |
3329 | cur->skb = NULL; |
3330 | ||
1da177e4 LT |
3331 | pktgen_remove_device(t, cur); |
3332 | } | |
1da177e4 LT |
3333 | } |
3334 | ||
222f1806 | 3335 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3336 | { |
222f1806 | 3337 | /* Remove from the thread list */ |
4e58a027 | 3338 | remove_proc_entry(t->tsk->comm, t->net->proc_dir); |
1da177e4 LT |
3339 | } |
3340 | ||
ef87979c | 3341 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3342 | { |
398f382c | 3343 | ktime_t idle_start = ktime_get(); |
ef87979c | 3344 | schedule(); |
398f382c | 3345 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
ef87979c | 3346 | } |
3791decb | 3347 | |
ef87979c SH |
3348 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3349 | { | |
398f382c | 3350 | ktime_t idle_start = ktime_get(); |
3791decb | 3351 | |
ef87979c SH |
3352 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3353 | if (signal_pending(current)) | |
3354 | break; | |
3355 | ||
3356 | if (need_resched()) | |
3357 | pktgen_resched(pkt_dev); | |
3358 | else | |
3359 | cpu_relax(); | |
3360 | } | |
398f382c | 3361 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
3791decb SH |
3362 | } |
3363 | ||
475ac1e4 | 3364 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3365 | { |
38b2cf29 | 3366 | unsigned int burst = ACCESS_ONCE(pkt_dev->burst); |
00829823 | 3367 | struct net_device *odev = pkt_dev->odev; |
fd2ea0a7 | 3368 | struct netdev_queue *txq; |
62f64aed | 3369 | struct sk_buff *skb; |
1da177e4 LT |
3370 | int ret; |
3371 | ||
ef87979c SH |
3372 | /* If device is offline, then don't send */ |
3373 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3374 | pktgen_stop_device(pkt_dev); | |
3375 | return; | |
fd2ea0a7 DM |
3376 | } |
3377 | ||
ef87979c SH |
3378 | /* This is max DELAY, this has special meaning of |
3379 | * "never transmit" | |
3380 | */ | |
3381 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
398f382c | 3382 | pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX); |
3791decb | 3383 | return; |
1da177e4 | 3384 | } |
222f1806 | 3385 | |
ef87979c | 3386 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3387 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3388 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3389 | /* build a new pkt */ | |
3390 | kfree_skb(pkt_dev->skb); | |
3391 | ||
3392 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3393 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3394 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3395 | schedule(); |
3396 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3397 | return; | |
1da177e4 | 3398 | } |
baac8564 | 3399 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf | 3400 | pkt_dev->clone_count = 0; /* reset counter */ |
1da177e4 | 3401 | } |
95ed63f7 | 3402 | |
ef87979c SH |
3403 | if (pkt_dev->delay && pkt_dev->last_ok) |
3404 | spin(pkt_dev, pkt_dev->next_tx); | |
3405 | ||
62f64aed AS |
3406 | if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) { |
3407 | skb = pkt_dev->skb; | |
3408 | skb->protocol = eth_type_trans(skb, skb->dev); | |
3409 | atomic_add(burst, &skb->users); | |
3410 | local_bh_disable(); | |
3411 | do { | |
3412 | ret = netif_receive_skb(skb); | |
3413 | if (ret == NET_RX_DROP) | |
3414 | pkt_dev->errors++; | |
3415 | pkt_dev->sofar++; | |
3416 | pkt_dev->seq_num++; | |
3417 | if (atomic_read(&skb->users) != burst) { | |
3418 | /* skb was queued by rps/rfs or taps, | |
3419 | * so cannot reuse this skb | |
3420 | */ | |
3421 | atomic_sub(burst - 1, &skb->users); | |
3422 | /* get out of the loop and wait | |
3423 | * until skb is consumed | |
3424 | */ | |
62f64aed AS |
3425 | break; |
3426 | } | |
3427 | /* skb was 'freed' by stack, so clean few | |
3428 | * bits and reuse it | |
3429 | */ | |
3430 | #ifdef CONFIG_NET_CLS_ACT | |
3431 | skb->tc_verd = 0; /* reset reclass/redir ttl */ | |
3432 | #endif | |
3433 | } while (--burst > 0); | |
3434 | goto out; /* Skips xmit_mode M_START_XMIT */ | |
3435 | } | |
3436 | ||
10c51b56 | 3437 | txq = skb_get_tx_queue(odev, pkt_dev->skb); |
fd2ea0a7 | 3438 | |
0f2eea4b DB |
3439 | local_bh_disable(); |
3440 | ||
3441 | HARD_TX_LOCK(odev, txq, smp_processor_id()); | |
5b8db2f5 | 3442 | |
6f25cd47 | 3443 | if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) { |
ef87979c | 3444 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3445 | pkt_dev->last_ok = 0; |
3446 | goto unlock; | |
3447 | } | |
38b2cf29 AS |
3448 | atomic_add(burst, &pkt_dev->skb->users); |
3449 | ||
3450 | xmit_more: | |
3451 | ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0); | |
ef87979c SH |
3452 | |
3453 | switch (ret) { | |
3454 | case NETDEV_TX_OK: | |
ef87979c SH |
3455 | pkt_dev->last_ok = 1; |
3456 | pkt_dev->sofar++; | |
3457 | pkt_dev->seq_num++; | |
baac8564 | 3458 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
38b2cf29 AS |
3459 | if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq)) |
3460 | goto xmit_more; | |
ef87979c | 3461 | break; |
f466dba1 JF |
3462 | case NET_XMIT_DROP: |
3463 | case NET_XMIT_CN: | |
3464 | case NET_XMIT_POLICED: | |
3465 | /* skb has been consumed */ | |
3466 | pkt_dev->errors++; | |
3467 | break; | |
ef87979c | 3468 | default: /* Drivers are not supposed to return other values! */ |
e87cc472 JP |
3469 | net_info_ratelimited("%s xmit error: %d\n", |
3470 | pkt_dev->odevname, ret); | |
ef87979c SH |
3471 | pkt_dev->errors++; |
3472 | /* fallthru */ | |
3473 | case NETDEV_TX_LOCKED: | |
3474 | case NETDEV_TX_BUSY: | |
3475 | /* Retry it next time */ | |
3476 | atomic_dec(&(pkt_dev->skb->users)); | |
3477 | pkt_dev->last_ok = 0; | |
222f1806 | 3478 | } |
38b2cf29 AS |
3479 | if (unlikely(burst)) |
3480 | atomic_sub(burst, &pkt_dev->skb->users); | |
0835acfe | 3481 | unlock: |
0f2eea4b DB |
3482 | HARD_TX_UNLOCK(odev, txq); |
3483 | ||
62f64aed | 3484 | out: |
0f2eea4b | 3485 | local_bh_enable(); |
222f1806 | 3486 | |
1da177e4 LT |
3487 | /* If pkt_dev->count is zero, then run forever */ |
3488 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3489 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3490 | |
1da177e4 LT |
3491 | /* Done with this */ |
3492 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3493 | } |
222f1806 | 3494 | } |
1da177e4 | 3495 | |
4ec93edb | 3496 | /* |
1da177e4 LT |
3497 | * Main loop of the thread goes here |
3498 | */ | |
3499 | ||
ee74baa7 | 3500 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3501 | { |
3502 | DEFINE_WAIT(wait); | |
ee74baa7 | 3503 | struct pktgen_thread *t = arg; |
222f1806 | 3504 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3505 | int cpu = t->cpu; |
1da177e4 | 3506 | |
ee74baa7 | 3507 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3508 | |
3509 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3510 | complete(&t->start_done); |
1da177e4 | 3511 | |
f9467eae | 3512 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3513 | |
83144186 RW |
3514 | set_freezable(); |
3515 | ||
ee74baa7 DM |
3516 | while (!kthread_should_stop()) { |
3517 | pkt_dev = next_to_run(t); | |
1da177e4 | 3518 | |
ef87979c | 3519 | if (unlikely(!pkt_dev && t->control == 0)) { |
4e58a027 | 3520 | if (t->net->pktgen_exiting) |
551eaff1 | 3521 | break; |
ef87979c SH |
3522 | wait_event_interruptible_timeout(t->queue, |
3523 | t->control != 0, | |
3524 | HZ/10); | |
1b3f720b | 3525 | try_to_freeze(); |
ef87979c | 3526 | continue; |
ee74baa7 | 3527 | } |
1da177e4 | 3528 | |
ef87979c | 3529 | if (likely(pkt_dev)) { |
1da177e4 LT |
3530 | pktgen_xmit(pkt_dev); |
3531 | ||
ef87979c SH |
3532 | if (need_resched()) |
3533 | pktgen_resched(pkt_dev); | |
3534 | else | |
3535 | cpu_relax(); | |
3536 | } | |
3537 | ||
222f1806 | 3538 | if (t->control & T_STOP) { |
1da177e4 LT |
3539 | pktgen_stop(t); |
3540 | t->control &= ~(T_STOP); | |
3541 | } | |
3542 | ||
222f1806 | 3543 | if (t->control & T_RUN) { |
1da177e4 LT |
3544 | pktgen_run(t); |
3545 | t->control &= ~(T_RUN); | |
3546 | } | |
3547 | ||
222f1806 | 3548 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3549 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3550 | t->control &= ~(T_REMDEVALL); |
3551 | } | |
3552 | ||
222f1806 | 3553 | if (t->control & T_REMDEV) { |
95ed63f7 | 3554 | pktgen_rem_one_if(t); |
1da177e4 LT |
3555 | t->control &= ~(T_REMDEV); |
3556 | } | |
3557 | ||
09fe3ef4 | 3558 | try_to_freeze(); |
222f1806 | 3559 | } |
1da177e4 | 3560 | |
f9467eae | 3561 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3562 | pktgen_stop(t); |
1da177e4 | 3563 | |
f9467eae | 3564 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3565 | pktgen_rem_all_ifs(t); |
1da177e4 | 3566 | |
f9467eae | 3567 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3568 | pktgen_rem_thread(t); |
cdcdbe0b | 3569 | |
ee74baa7 | 3570 | return 0; |
1da177e4 LT |
3571 | } |
3572 | ||
222f1806 | 3573 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3574 | const char *ifname, bool exact) |
1da177e4 | 3575 | { |
c26a8016 | 3576 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3577 | size_t len = strlen(ifname); |
222f1806 | 3578 | |
8788370a JDB |
3579 | rcu_read_lock(); |
3580 | list_for_each_entry_rcu(p, &t->if_list, list) | |
3e984840 ED |
3581 | if (strncmp(p->odevname, ifname, len) == 0) { |
3582 | if (p->odevname[len]) { | |
3583 | if (exact || p->odevname[len] != '@') | |
3584 | continue; | |
3585 | } | |
c26a8016 | 3586 | pkt_dev = p; |
222f1806 LC |
3587 | break; |
3588 | } | |
222f1806 | 3589 | |
8788370a | 3590 | rcu_read_unlock(); |
f9467eae | 3591 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3592 | return pkt_dev; |
1da177e4 LT |
3593 | } |
3594 | ||
4ec93edb YH |
3595 | /* |
3596 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3597 | */ |
3598 | ||
222f1806 LC |
3599 | static int add_dev_to_thread(struct pktgen_thread *t, |
3600 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3601 | { |
3602 | int rv = 0; | |
222f1806 | 3603 | |
8788370a JDB |
3604 | /* This function cannot be called concurrently, as its called |
3605 | * under pktgen_thread_lock mutex, but it can run from | |
3606 | * userspace on another CPU than the kthread. The if_lock() | |
3607 | * is used here to sync with concurrent instances of | |
3608 | * _rem_dev_from_if_list() invoked via kthread, which is also | |
3609 | * updating the if_list */ | |
222f1806 LC |
3610 | if_lock(t); |
3611 | ||
3612 | if (pkt_dev->pg_thread) { | |
f9467eae | 3613 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3614 | rv = -EBUSY; |
3615 | goto out; | |
3616 | } | |
c26a8016 | 3617 | |
1da177e4 | 3618 | pkt_dev->running = 0; |
8788370a JDB |
3619 | pkt_dev->pg_thread = t; |
3620 | list_add_rcu(&pkt_dev->list, &t->if_list); | |
1da177e4 | 3621 | |
222f1806 LC |
3622 | out: |
3623 | if_unlock(t); | |
3624 | return rv; | |
1da177e4 LT |
3625 | } |
3626 | ||
3627 | /* Called under thread lock */ | |
3628 | ||
222f1806 | 3629 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3630 | { |
222f1806 | 3631 | struct pktgen_dev *pkt_dev; |
39df232f | 3632 | int err; |
3291b9db | 3633 | int node = cpu_to_node(t->cpu); |
222f1806 | 3634 | |
1da177e4 LT |
3635 | /* We don't allow a device to be on several threads */ |
3636 | ||
4e58a027 | 3637 | pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND); |
d50a6b56 | 3638 | if (pkt_dev) { |
f9467eae | 3639 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3640 | return -EBUSY; |
3641 | } | |
d50a6b56 | 3642 | |
3291b9db | 3643 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3644 | if (!pkt_dev) |
3645 | return -ENOMEM; | |
3646 | ||
593f63b0 | 3647 | strcpy(pkt_dev->odevname, ifname); |
68d5ac2e | 3648 | pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3291b9db | 3649 | node); |
d50a6b56 SH |
3650 | if (pkt_dev->flows == NULL) { |
3651 | kfree(pkt_dev); | |
3652 | return -ENOMEM; | |
3653 | } | |
d50a6b56 | 3654 | |
95ed63f7 | 3655 | pkt_dev->removal_mark = 0; |
d50a6b56 | 3656 | pkt_dev->nfrags = 0; |
fd29cf72 | 3657 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3658 | pkt_dev->count = pg_count_d; |
3659 | pkt_dev->sofar = 0; | |
222f1806 | 3660 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3661 | pkt_dev->udp_src_max = 9; |
3662 | pkt_dev->udp_dst_min = 9; | |
3663 | pkt_dev->udp_dst_max = 9; | |
34954ddc FF |
3664 | pkt_dev->vlan_p = 0; |
3665 | pkt_dev->vlan_cfi = 0; | |
3666 | pkt_dev->vlan_id = 0xffff; | |
3667 | pkt_dev->svlan_p = 0; | |
3668 | pkt_dev->svlan_cfi = 0; | |
3669 | pkt_dev->svlan_id = 0xffff; | |
38b2cf29 | 3670 | pkt_dev->burst = 1; |
e99b99b4 | 3671 | pkt_dev->node = -1; |
34954ddc | 3672 | |
4e58a027 | 3673 | err = pktgen_setup_dev(t->net, pkt_dev, ifname); |
39df232f SH |
3674 | if (err) |
3675 | goto out1; | |
d8873315 NH |
3676 | if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) |
3677 | pkt_dev->clone_skb = pg_clone_skb_d; | |
d50a6b56 | 3678 | |
4e58a027 | 3679 | pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir, |
5efdccbc | 3680 | &pktgen_if_fops, pkt_dev); |
39df232f | 3681 | if (!pkt_dev->entry) { |
f9467eae | 3682 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3683 | PG_PROC_DIR, ifname); |
39df232f SH |
3684 | err = -EINVAL; |
3685 | goto out2; | |
d50a6b56 | 3686 | } |
a553e4a6 JHS |
3687 | #ifdef CONFIG_XFRM |
3688 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3689 | pkt_dev->ipsproto = IPPROTO_ESP; | |
cf93d47e FD |
3690 | |
3691 | /* xfrm tunnel mode needs additional dst to extract outter | |
3692 | * ip header protocol/ttl/id field, here creat a phony one. | |
3693 | * instead of looking for a valid rt, which definitely hurting | |
3694 | * performance under such circumstance. | |
3695 | */ | |
3696 | pkt_dev->dstops.family = AF_INET; | |
3697 | pkt_dev->dst.dev = pkt_dev->odev; | |
3698 | dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false); | |
3699 | pkt_dev->dst.child = &pkt_dev->dst; | |
3700 | pkt_dev->dst.ops = &pkt_dev->dstops; | |
a553e4a6 | 3701 | #endif |
d50a6b56 SH |
3702 | |
3703 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3704 | out2: |
3705 | dev_put(pkt_dev->odev); | |
3706 | out1: | |
a553e4a6 JHS |
3707 | #ifdef CONFIG_XFRM |
3708 | free_SAs(pkt_dev); | |
3709 | #endif | |
1d0ebfe7 | 3710 | vfree(pkt_dev->flows); |
39df232f SH |
3711 | kfree(pkt_dev); |
3712 | return err; | |
1da177e4 LT |
3713 | } |
3714 | ||
4e58a027 | 3715 | static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn) |
1da177e4 | 3716 | { |
cdcdbe0b | 3717 | struct pktgen_thread *t; |
d50a6b56 | 3718 | struct proc_dir_entry *pe; |
ee74baa7 | 3719 | struct task_struct *p; |
222f1806 | 3720 | |
3291b9db ED |
3721 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3722 | cpu_to_node(cpu)); | |
222f1806 | 3723 | if (!t) { |
f9467eae | 3724 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3725 | return -ENOMEM; |
3726 | } | |
3727 | ||
222f1806 | 3728 | spin_lock_init(&t->if_lock); |
1da177e4 | 3729 | t->cpu = cpu; |
222f1806 | 3730 | |
ee74baa7 DM |
3731 | INIT_LIST_HEAD(&t->if_list); |
3732 | ||
4e58a027 | 3733 | list_add_tail(&t->th_list, &pn->pktgen_threads); |
d3ede327 | 3734 | init_completion(&t->start_done); |
ee74baa7 | 3735 | |
94dcf29a ED |
3736 | p = kthread_create_on_node(pktgen_thread_worker, |
3737 | t, | |
3738 | cpu_to_node(cpu), | |
3739 | "kpktgend_%d", cpu); | |
ee74baa7 | 3740 | if (IS_ERR(p)) { |
f9467eae | 3741 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3742 | list_del(&t->th_list); |
3743 | kfree(t); | |
3744 | return PTR_ERR(p); | |
3745 | } | |
3746 | kthread_bind(p, cpu); | |
3747 | t->tsk = p; | |
3748 | ||
4e58a027 | 3749 | pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir, |
5efdccbc | 3750 | &pktgen_thread_fops, t); |
222f1806 | 3751 | if (!pe) { |
f9467eae | 3752 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3753 | PG_PROC_DIR, t->tsk->comm); |
3754 | kthread_stop(p); | |
3755 | list_del(&t->th_list); | |
222f1806 LC |
3756 | kfree(t); |
3757 | return -EINVAL; | |
3758 | } | |
d50a6b56 | 3759 | |
4e58a027 | 3760 | t->net = pn; |
1fbe4b46 | 3761 | get_task_struct(p); |
ee74baa7 | 3762 | wake_up_process(p); |
d3ede327 | 3763 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3764 | |
3765 | return 0; | |
3766 | } | |
3767 | ||
4ec93edb YH |
3768 | /* |
3769 | * Removes a device from the thread if_list. | |
1da177e4 | 3770 | */ |
222f1806 LC |
3771 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3772 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3773 | { |
c26a8016 LC |
3774 | struct list_head *q, *n; |
3775 | struct pktgen_dev *p; | |
1da177e4 | 3776 | |
8788370a | 3777 | if_lock(t); |
c26a8016 LC |
3778 | list_for_each_safe(q, n, &t->if_list) { |
3779 | p = list_entry(q, struct pktgen_dev, list); | |
3780 | if (p == pkt_dev) | |
8788370a | 3781 | list_del_rcu(&p->list); |
1da177e4 | 3782 | } |
8788370a | 3783 | if_unlock(t); |
1da177e4 LT |
3784 | } |
3785 | ||
222f1806 LC |
3786 | static int pktgen_remove_device(struct pktgen_thread *t, |
3787 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3788 | { |
f9467eae | 3789 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3790 | |
222f1806 | 3791 | if (pkt_dev->running) { |
294a0b7f | 3792 | pr_warn("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3793 | pktgen_stop_device(pkt_dev); |
3794 | } | |
3795 | ||
3796 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3797 | |
3798 | if (pkt_dev->odev) { | |
3799 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3800 | pkt_dev->odev = NULL; |
3801 | } | |
3802 | ||
8788370a JDB |
3803 | /* Remove proc before if_list entry, because add_device uses |
3804 | * list to determine if interface already exist, avoid race | |
3805 | * with proc_create_data() */ | |
ef87c5d6 | 3806 | proc_remove(pkt_dev->entry); |
1da177e4 | 3807 | |
8788370a JDB |
3808 | /* And update the thread if_list */ |
3809 | _rem_dev_from_if_list(t, pkt_dev); | |
3810 | ||
a553e4a6 JHS |
3811 | #ifdef CONFIG_XFRM |
3812 | free_SAs(pkt_dev); | |
3813 | #endif | |
1d0ebfe7 | 3814 | vfree(pkt_dev->flows); |
26ad7879 ED |
3815 | if (pkt_dev->page) |
3816 | put_page(pkt_dev->page); | |
8788370a | 3817 | kfree_rcu(pkt_dev, rcu); |
222f1806 | 3818 | return 0; |
1da177e4 LT |
3819 | } |
3820 | ||
4e58a027 | 3821 | static int __net_init pg_net_init(struct net *net) |
1da177e4 | 3822 | { |
4e58a027 | 3823 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
d50a6b56 | 3824 | struct proc_dir_entry *pe; |
4e58a027 CW |
3825 | int cpu, ret = 0; |
3826 | ||
3827 | pn->net = net; | |
3828 | INIT_LIST_HEAD(&pn->pktgen_threads); | |
3829 | pn->pktgen_exiting = false; | |
3830 | pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net); | |
3831 | if (!pn->proc_dir) { | |
3832 | pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR); | |
d50a6b56 | 3833 | return -ENODEV; |
4e58a027 CW |
3834 | } |
3835 | pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops); | |
222f1806 | 3836 | if (pe == NULL) { |
4e58a027 | 3837 | pr_err("cannot create %s procfs entry\n", PGCTRL); |
ce14f894 | 3838 | ret = -EINVAL; |
4e58a027 | 3839 | goto remove; |
222f1806 | 3840 | } |
1da177e4 | 3841 | |
670c02c2 | 3842 | for_each_online_cpu(cpu) { |
8024bb24 | 3843 | int err; |
1da177e4 | 3844 | |
4e58a027 | 3845 | err = pktgen_create_thread(cpu, pn); |
8024bb24 | 3846 | if (err) |
4e58a027 | 3847 | pr_warn("Cannot create thread for cpu %d (%d)\n", |
f9467eae | 3848 | cpu, err); |
222f1806 | 3849 | } |
8024bb24 | 3850 | |
4e58a027 CW |
3851 | if (list_empty(&pn->pktgen_threads)) { |
3852 | pr_err("Initialization failed for all threads\n"); | |
ce14f894 | 3853 | ret = -ENODEV; |
4e58a027 | 3854 | goto remove_entry; |
8024bb24 LC |
3855 | } |
3856 | ||
222f1806 | 3857 | return 0; |
ce14f894 | 3858 | |
4e58a027 CW |
3859 | remove_entry: |
3860 | remove_proc_entry(PGCTRL, pn->proc_dir); | |
3861 | remove: | |
ece31ffd | 3862 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
ce14f894 | 3863 | return ret; |
1da177e4 LT |
3864 | } |
3865 | ||
4e58a027 | 3866 | static void __net_exit pg_net_exit(struct net *net) |
1da177e4 | 3867 | { |
4e58a027 | 3868 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
cdcdbe0b LC |
3869 | struct pktgen_thread *t; |
3870 | struct list_head *q, *n; | |
d4b11335 | 3871 | LIST_HEAD(list); |
1da177e4 | 3872 | |
222f1806 | 3873 | /* Stop all interfaces & threads */ |
4e58a027 | 3874 | pn->pktgen_exiting = true; |
1da177e4 | 3875 | |
c57b5468 | 3876 | mutex_lock(&pktgen_thread_lock); |
4e58a027 | 3877 | list_splice_init(&pn->pktgen_threads, &list); |
c57b5468 ED |
3878 | mutex_unlock(&pktgen_thread_lock); |
3879 | ||
3880 | list_for_each_safe(q, n, &list) { | |
cdcdbe0b | 3881 | t = list_entry(q, struct pktgen_thread, th_list); |
c57b5468 | 3882 | list_del(&t->th_list); |
ee74baa7 | 3883 | kthread_stop(t->tsk); |
1fbe4b46 | 3884 | put_task_struct(t->tsk); |
ee74baa7 | 3885 | kfree(t); |
222f1806 | 3886 | } |
1da177e4 | 3887 | |
4e58a027 | 3888 | remove_proc_entry(PGCTRL, pn->proc_dir); |
ece31ffd | 3889 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
4e58a027 CW |
3890 | } |
3891 | ||
3892 | static struct pernet_operations pg_net_ops = { | |
3893 | .init = pg_net_init, | |
3894 | .exit = pg_net_exit, | |
3895 | .id = &pg_net_id, | |
3896 | .size = sizeof(struct pktgen_net), | |
3897 | }; | |
3898 | ||
3899 | static int __init pg_init(void) | |
3900 | { | |
3901 | int ret = 0; | |
1da177e4 | 3902 | |
4e58a027 CW |
3903 | pr_info("%s", version); |
3904 | ret = register_pernet_subsys(&pg_net_ops); | |
3905 | if (ret) | |
3906 | return ret; | |
3907 | ret = register_netdevice_notifier(&pktgen_notifier_block); | |
3908 | if (ret) | |
3909 | unregister_pernet_subsys(&pg_net_ops); | |
3910 | ||
3911 | return ret; | |
3912 | } | |
3913 | ||
3914 | static void __exit pg_cleanup(void) | |
3915 | { | |
3916 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3917 | unregister_pernet_subsys(&pg_net_ops); | |
8788370a | 3918 | /* Don't need rcu_barrier() due to use of kfree_rcu() */ |
1da177e4 LT |
3919 | } |
3920 | ||
1da177e4 LT |
3921 | module_init(pg_init); |
3922 | module_exit(pg_cleanup); | |
3923 | ||
c3d2f52d | 3924 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3925 | MODULE_DESCRIPTION("Packet Generator tool"); |
3926 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3927 | MODULE_VERSION(VERSION); |
1da177e4 | 3928 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3929 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3930 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3931 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3932 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3933 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3934 | module_param(debug, int, 0); |
c3d2f52d | 3935 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |