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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 | |
1da177e4 LT |
72 | * way. The if_lock should be possible to remove when add/rem_device is merged |
73 | * into this too. | |
74 | * | |
4ec93edb YH |
75 | * By design there should only be *one* "controlling" process. In practice |
76 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 77 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 78 | * For practical use this should be no problem. |
1da177e4 | 79 | * |
4ec93edb YH |
80 | * Note when adding devices to a specific CPU there good idea to also assign |
81 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
82 | * --ro |
83 | * | |
4ec93edb | 84 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
85 | * memleak 030710- KJP |
86 | * | |
87 | * First "ranges" functionality for ipv6 030726 --ro | |
88 | * | |
89 | * Included flow support. 030802 ANK. | |
90 | * | |
91 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 92 | * |
1da177e4 LT |
93 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
94 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
95 | * | |
4ec93edb | 96 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
97 | * <shemminger@osdl.org> 040923 |
98 | * | |
4ec93edb | 99 | * Randy Dunlap fixed u64 printk compiler waring |
1da177e4 LT |
100 | * |
101 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
102 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
103 | * | |
4ec93edb | 104 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
105 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
106 | * | |
4ec93edb | 107 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 108 | * 050103 |
ca6549af SW |
109 | * |
110 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
111 | * | |
34954ddc FF |
112 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
113 | * | |
ce5d0b47 AR |
114 | * Fixed src_mac command to set source mac of packet to value specified in |
115 | * command by Adit Ranadive <adit.262@gmail.com> | |
116 | * | |
1da177e4 | 117 | */ |
f9467eae JP |
118 | |
119 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
120 | ||
1da177e4 LT |
121 | #include <linux/sys.h> |
122 | #include <linux/types.h> | |
123 | #include <linux/module.h> | |
124 | #include <linux/moduleparam.h> | |
125 | #include <linux/kernel.h> | |
222fa076 | 126 | #include <linux/mutex.h> |
1da177e4 LT |
127 | #include <linux/sched.h> |
128 | #include <linux/slab.h> | |
129 | #include <linux/vmalloc.h> | |
1da177e4 LT |
130 | #include <linux/unistd.h> |
131 | #include <linux/string.h> | |
132 | #include <linux/ptrace.h> | |
133 | #include <linux/errno.h> | |
134 | #include <linux/ioport.h> | |
135 | #include <linux/interrupt.h> | |
4fc268d2 | 136 | #include <linux/capability.h> |
2bc481cf | 137 | #include <linux/hrtimer.h> |
09fe3ef4 | 138 | #include <linux/freezer.h> |
1da177e4 LT |
139 | #include <linux/delay.h> |
140 | #include <linux/timer.h> | |
cdcdbe0b | 141 | #include <linux/list.h> |
1da177e4 LT |
142 | #include <linux/init.h> |
143 | #include <linux/skbuff.h> | |
144 | #include <linux/netdevice.h> | |
145 | #include <linux/inet.h> | |
146 | #include <linux/inetdevice.h> | |
147 | #include <linux/rtnetlink.h> | |
148 | #include <linux/if_arp.h> | |
34954ddc | 149 | #include <linux/if_vlan.h> |
1da177e4 LT |
150 | #include <linux/in.h> |
151 | #include <linux/ip.h> | |
152 | #include <linux/ipv6.h> | |
153 | #include <linux/udp.h> | |
154 | #include <linux/proc_fs.h> | |
d50a6b56 | 155 | #include <linux/seq_file.h> |
1da177e4 | 156 | #include <linux/wait.h> |
f404e9a6 | 157 | #include <linux/etherdevice.h> |
ee74baa7 | 158 | #include <linux/kthread.h> |
457c4cbc | 159 | #include <net/net_namespace.h> |
1da177e4 LT |
160 | #include <net/checksum.h> |
161 | #include <net/ipv6.h> | |
162 | #include <net/addrconf.h> | |
a553e4a6 JHS |
163 | #ifdef CONFIG_XFRM |
164 | #include <net/xfrm.h> | |
165 | #endif | |
1da177e4 LT |
166 | #include <asm/byteorder.h> |
167 | #include <linux/rcupdate.h> | |
1977f032 | 168 | #include <linux/bitops.h> |
63adc6fb SH |
169 | #include <linux/io.h> |
170 | #include <linux/timex.h> | |
171 | #include <linux/uaccess.h> | |
1da177e4 | 172 | #include <asm/dma.h> |
222f1806 | 173 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 174 | |
43d28b65 | 175 | #define VERSION "2.74" |
1da177e4 | 176 | #define IP_NAME_SZ 32 |
ca6549af | 177 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 178 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 179 | |
f9467eae JP |
180 | #define func_enter() pr_debug("entering %s\n", __func__); |
181 | ||
1da177e4 | 182 | /* Device flag bits */ |
222f1806 LC |
183 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
184 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
185 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
186 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
187 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
188 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
189 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
190 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 191 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
192 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
193 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 194 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 195 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 196 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 197 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 198 | #define F_NODE (1<<15) /* Node memory alloc*/ |
1da177e4 LT |
199 | |
200 | /* Thread control flag bits */ | |
6b80d6a6 SH |
201 | #define T_STOP (1<<0) /* Stop run */ |
202 | #define T_RUN (1<<1) /* Start run */ | |
203 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
204 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 205 | |
1da177e4 LT |
206 | /* If lock -- can be removed after some work */ |
207 | #define if_lock(t) spin_lock(&(t->if_lock)); | |
208 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
209 | ||
210 | /* Used to help with determining the pkts on receive */ | |
211 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
212 | #define PG_PROC_DIR "pktgen" |
213 | #define PGCTRL "pgctrl" | |
63adc6fb | 214 | static struct proc_dir_entry *pg_proc_dir; |
1da177e4 LT |
215 | |
216 | #define MAX_CFLOWS 65536 | |
217 | ||
34954ddc FF |
218 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
219 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
220 | ||
222f1806 | 221 | struct flow_state { |
252e3346 | 222 | __be32 cur_daddr; |
222f1806 | 223 | int count; |
a553e4a6 JHS |
224 | #ifdef CONFIG_XFRM |
225 | struct xfrm_state *x; | |
226 | #endif | |
007a531b | 227 | __u32 flags; |
1da177e4 LT |
228 | }; |
229 | ||
007a531b JHS |
230 | /* flow flag bits */ |
231 | #define F_INIT (1<<0) /* flow has been initialized */ | |
232 | ||
1da177e4 | 233 | struct pktgen_dev { |
1da177e4 LT |
234 | /* |
235 | * Try to keep frequent/infrequent used vars. separated. | |
236 | */ | |
39df232f SH |
237 | struct proc_dir_entry *entry; /* proc file */ |
238 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 239 | struct list_head list; /* chaining in the thread's run-queue */ |
1da177e4 | 240 | |
63adc6fb | 241 | int running; /* if false, the test will stop */ |
1da177e4 | 242 | |
222f1806 LC |
243 | /* If min != max, then we will either do a linear iteration, or |
244 | * we will do a random selection from within the range. | |
245 | */ | |
246 | __u32 flags; | |
95ed63f7 AK |
247 | int removal_mark; /* non-zero => the device is marked for |
248 | * removal by worker thread */ | |
1da177e4 | 249 | |
222f1806 LC |
250 | int min_pkt_size; /* = ETH_ZLEN; */ |
251 | int max_pkt_size; /* = ETH_ZLEN; */ | |
16dab72f | 252 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 253 | int nfrags; |
fd29cf72 SH |
254 | u64 delay; /* nano-seconds */ |
255 | ||
222f1806 LC |
256 | __u64 count; /* Default No packets to send */ |
257 | __u64 sofar; /* How many pkts we've sent so far */ | |
258 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 259 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
260 | |
261 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
262 | |
263 | __u64 allocated_skbs; | |
264 | __u32 clone_count; | |
265 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
266 | * Or a failed transmit of some sort? |
267 | * This will keep sequence numbers in order | |
222f1806 | 268 | */ |
fd29cf72 SH |
269 | ktime_t next_tx; |
270 | ktime_t started_at; | |
271 | ktime_t stopped_at; | |
272 | u64 idle_acc; /* nano-seconds */ | |
273 | ||
222f1806 LC |
274 | __u32 seq_num; |
275 | ||
63adc6fb SH |
276 | int clone_skb; /* |
277 | * Use multiple SKBs during packet gen. | |
278 | * If this number is greater than 1, then | |
279 | * that many copies of the same packet will be | |
280 | * sent before a new packet is allocated. | |
281 | * If you want to send 1024 identical packets | |
282 | * before creating a new packet, | |
283 | * set clone_skb to 1024. | |
222f1806 LC |
284 | */ |
285 | ||
286 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
287 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
288 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
289 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
290 | ||
291 | struct in6_addr in6_saddr; | |
292 | struct in6_addr in6_daddr; | |
293 | struct in6_addr cur_in6_daddr; | |
294 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 295 | /* For ranges */ |
222f1806 LC |
296 | struct in6_addr min_in6_daddr; |
297 | struct in6_addr max_in6_daddr; | |
298 | struct in6_addr min_in6_saddr; | |
299 | struct in6_addr max_in6_saddr; | |
300 | ||
301 | /* If we're doing ranges, random or incremental, then this | |
302 | * defines the min/max for those ranges. | |
303 | */ | |
252e3346 AV |
304 | __be32 saddr_min; /* inclusive, source IP address */ |
305 | __be32 saddr_max; /* exclusive, source IP address */ | |
306 | __be32 daddr_min; /* inclusive, dest IP address */ | |
307 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
308 | |
309 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
310 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
311 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
312 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
313 | ||
1ca7768c | 314 | /* DSCP + ECN */ |
63adc6fb SH |
315 | __u8 tos; /* six MSB of (former) IPv4 TOS |
316 | are for dscp codepoint */ | |
317 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
318 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 319 | |
ca6549af SW |
320 | /* MPLS */ |
321 | unsigned nr_labels; /* Depth of stack, 0 = no MPLS */ | |
322 | __be32 labels[MAX_MPLS_LABELS]; | |
323 | ||
34954ddc FF |
324 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
325 | __u8 vlan_p; | |
326 | __u8 vlan_cfi; | |
327 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
328 | ||
329 | __u8 svlan_p; | |
330 | __u8 svlan_cfi; | |
331 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
332 | ||
222f1806 LC |
333 | __u32 src_mac_count; /* How many MACs to iterate through */ |
334 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
335 | ||
336 | unsigned char dst_mac[ETH_ALEN]; | |
337 | unsigned char src_mac[ETH_ALEN]; | |
338 | ||
339 | __u32 cur_dst_mac_offset; | |
340 | __u32 cur_src_mac_offset; | |
252e3346 AV |
341 | __be32 cur_saddr; |
342 | __be32 cur_daddr; | |
66ed1e5e | 343 | __u16 ip_id; |
222f1806 LC |
344 | __u16 cur_udp_dst; |
345 | __u16 cur_udp_src; | |
45b270f8 | 346 | __u16 cur_queue_map; |
222f1806 | 347 | __u32 cur_pkt_size; |
baac8564 | 348 | __u32 last_pkt_size; |
222f1806 LC |
349 | |
350 | __u8 hh[14]; | |
351 | /* = { | |
352 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
353 | ||
354 | We fill in SRC address later | |
355 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
356 | 0x08, 0x00 | |
357 | }; | |
358 | */ | |
359 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
360 | ||
63adc6fb | 361 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
362 | * are transmitting the same one multiple times |
363 | */ | |
63adc6fb SH |
364 | struct net_device *odev; /* The out-going device. |
365 | * Note that the device should have it's | |
366 | * pg_info pointer pointing back to this | |
367 | * device. | |
368 | * Set when the user specifies the out-going | |
369 | * device name (not when the inject is | |
370 | * started as it used to do.) | |
371 | */ | |
593f63b0 | 372 | char odevname[32]; |
1da177e4 | 373 | struct flow_state *flows; |
222f1806 LC |
374 | unsigned cflows; /* Concurrent flows (config) */ |
375 | unsigned lflow; /* Flow length (config) */ | |
376 | unsigned nflows; /* accumulated flows (stats) */ | |
007a531b | 377 | unsigned curfl; /* current sequenced flow (state)*/ |
45b270f8 RO |
378 | |
379 | u16 queue_map_min; | |
380 | u16 queue_map_max; | |
e99b99b4 | 381 | int node; /* Memory node */ |
45b270f8 | 382 | |
a553e4a6 JHS |
383 | #ifdef CONFIG_XFRM |
384 | __u8 ipsmode; /* IPSEC mode (config) */ | |
385 | __u8 ipsproto; /* IPSEC type (config) */ | |
386 | #endif | |
39df232f | 387 | char result[512]; |
1da177e4 LT |
388 | }; |
389 | ||
390 | struct pktgen_hdr { | |
252e3346 AV |
391 | __be32 pgh_magic; |
392 | __be32 seq_num; | |
393 | __be32 tv_sec; | |
394 | __be32 tv_usec; | |
1da177e4 LT |
395 | }; |
396 | ||
397 | struct pktgen_thread { | |
63adc6fb | 398 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 399 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 400 | struct list_head th_list; |
ee74baa7 | 401 | struct task_struct *tsk; |
222f1806 | 402 | char result[512]; |
222f1806 | 403 | |
63adc6fb SH |
404 | /* Field for thread to receive "posted" events terminate, |
405 | stop ifs etc. */ | |
222f1806 LC |
406 | |
407 | u32 control; | |
1da177e4 LT |
408 | int cpu; |
409 | ||
222f1806 | 410 | wait_queue_head_t queue; |
d3ede327 | 411 | struct completion start_done; |
1da177e4 LT |
412 | }; |
413 | ||
414 | #define REMOVE 1 | |
415 | #define FIND 0 | |
416 | ||
fd29cf72 | 417 | static inline ktime_t ktime_now(void) |
1da177e4 | 418 | { |
fd29cf72 SH |
419 | struct timespec ts; |
420 | ktime_get_ts(&ts); | |
421 | ||
422 | return timespec_to_ktime(ts); | |
1da177e4 LT |
423 | } |
424 | ||
fd29cf72 SH |
425 | /* This works even if 32 bit because of careful byte order choice */ |
426 | static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2) | |
1da177e4 | 427 | { |
fd29cf72 | 428 | return cmp1.tv64 < cmp2.tv64; |
1da177e4 LT |
429 | } |
430 | ||
c3d2f52d | 431 | static const char version[] = |
f9467eae JP |
432 | "Packet Generator for packet performance testing. " |
433 | "Version: " VERSION "\n"; | |
1da177e4 | 434 | |
222f1806 LC |
435 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
436 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
437 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 438 | const char *ifname, bool exact); |
1da177e4 LT |
439 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
440 | static void pktgen_run_all_threads(void); | |
eb37b41c | 441 | static void pktgen_reset_all_threads(void); |
1da177e4 | 442 | static void pktgen_stop_all_threads_ifs(void); |
3bda06a3 | 443 | |
222f1806 | 444 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 445 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 446 | |
222f1806 LC |
447 | static unsigned int scan_ip6(const char *s, char ip[16]); |
448 | static unsigned int fmt_ip6(char *s, const char ip[16]); | |
1da177e4 LT |
449 | |
450 | /* Module parameters, defaults. */ | |
65c5b786 SH |
451 | static int pg_count_d __read_mostly = 1000; |
452 | static int pg_delay_d __read_mostly; | |
453 | static int pg_clone_skb_d __read_mostly; | |
454 | static int debug __read_mostly; | |
1da177e4 | 455 | |
222fa076 | 456 | static DEFINE_MUTEX(pktgen_thread_lock); |
cdcdbe0b | 457 | static LIST_HEAD(pktgen_threads); |
1da177e4 | 458 | |
1da177e4 LT |
459 | static struct notifier_block pktgen_notifier_block = { |
460 | .notifier_call = pktgen_device_event, | |
461 | }; | |
462 | ||
1da177e4 | 463 | /* |
4ec93edb | 464 | * /proc handling functions |
1da177e4 LT |
465 | * |
466 | */ | |
467 | ||
d50a6b56 | 468 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 469 | { |
c3d2f52d | 470 | seq_puts(seq, version); |
d50a6b56 | 471 | return 0; |
1da177e4 LT |
472 | } |
473 | ||
63adc6fb SH |
474 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
475 | size_t count, loff_t *ppos) | |
1da177e4 | 476 | { |
1da177e4 | 477 | int err = 0; |
d50a6b56 | 478 | char data[128]; |
1da177e4 | 479 | |
222f1806 LC |
480 | if (!capable(CAP_NET_ADMIN)) { |
481 | err = -EPERM; | |
1da177e4 | 482 | goto out; |
222f1806 | 483 | } |
1da177e4 | 484 | |
d50a6b56 SH |
485 | if (count > sizeof(data)) |
486 | count = sizeof(data); | |
1da177e4 | 487 | |
1da177e4 | 488 | if (copy_from_user(data, buf, count)) { |
b4099fab | 489 | err = -EFAULT; |
d50a6b56 | 490 | goto out; |
222f1806 LC |
491 | } |
492 | data[count - 1] = 0; /* Make string */ | |
1da177e4 | 493 | |
222f1806 | 494 | if (!strcmp(data, "stop")) |
1da177e4 LT |
495 | pktgen_stop_all_threads_ifs(); |
496 | ||
222f1806 | 497 | else if (!strcmp(data, "start")) |
1da177e4 LT |
498 | pktgen_run_all_threads(); |
499 | ||
eb37b41c JB |
500 | else if (!strcmp(data, "reset")) |
501 | pktgen_reset_all_threads(); | |
502 | ||
222f1806 | 503 | else |
f9467eae | 504 | pr_warning("Unknown command: %s\n", data); |
1da177e4 LT |
505 | |
506 | err = count; | |
507 | ||
222f1806 LC |
508 | out: |
509 | return err; | |
1da177e4 LT |
510 | } |
511 | ||
d50a6b56 SH |
512 | static int pgctrl_open(struct inode *inode, struct file *file) |
513 | { | |
514 | return single_open(file, pgctrl_show, PDE(inode)->data); | |
515 | } | |
516 | ||
9a32144e | 517 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
518 | .owner = THIS_MODULE, |
519 | .open = pgctrl_open, | |
520 | .read = seq_read, | |
521 | .llseek = seq_lseek, | |
522 | .write = pgctrl_write, | |
523 | .release = single_release, | |
d50a6b56 SH |
524 | }; |
525 | ||
526 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 527 | { |
648fda74 | 528 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
529 | ktime_t stopped; |
530 | u64 idle; | |
222f1806 LC |
531 | |
532 | seq_printf(seq, | |
533 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
534 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
535 | pkt_dev->max_pkt_size); | |
536 | ||
537 | seq_printf(seq, | |
fd29cf72 SH |
538 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
539 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 540 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
541 | |
542 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
543 | pkt_dev->lflow); | |
544 | ||
45b270f8 RO |
545 | seq_printf(seq, |
546 | " queue_map_min: %u queue_map_max: %u\n", | |
547 | pkt_dev->queue_map_min, | |
548 | pkt_dev->queue_map_max); | |
549 | ||
222f1806 LC |
550 | if (pkt_dev->flags & F_IPV6) { |
551 | char b1[128], b2[128], b3[128]; | |
552 | fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr); | |
553 | fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr); | |
554 | fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr); | |
555 | seq_printf(seq, | |
556 | " saddr: %s min_saddr: %s max_saddr: %s\n", b1, | |
557 | b2, b3); | |
558 | ||
559 | fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr); | |
560 | fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr); | |
561 | fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr); | |
562 | seq_printf(seq, | |
563 | " daddr: %s min_daddr: %s max_daddr: %s\n", b1, | |
564 | b2, b3); | |
565 | ||
63adc6fb SH |
566 | } else { |
567 | seq_printf(seq, | |
568 | " dst_min: %s dst_max: %s\n", | |
569 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 570 | seq_printf(seq, |
63adc6fb SH |
571 | " src_min: %s src_max: %s\n", |
572 | pkt_dev->src_min, pkt_dev->src_max); | |
573 | } | |
1da177e4 | 574 | |
222f1806 | 575 | seq_puts(seq, " src_mac: "); |
1da177e4 | 576 | |
e174961c JB |
577 | seq_printf(seq, "%pM ", |
578 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
579 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 LC |
580 | |
581 | seq_printf(seq, "dst_mac: "); | |
e174961c | 582 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
583 | |
584 | seq_printf(seq, | |
63adc6fb SH |
585 | " udp_src_min: %d udp_src_max: %d" |
586 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
587 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
588 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
589 | ||
590 | seq_printf(seq, | |
ca6549af | 591 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 592 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 593 | |
ca6549af SW |
594 | if (pkt_dev->nr_labels) { |
595 | unsigned i; | |
596 | seq_printf(seq, " mpls: "); | |
e71a4783 | 597 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
598 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
599 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
600 | } | |
601 | ||
63adc6fb | 602 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 603 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
604 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
605 | pkt_dev->vlan_cfi); | |
34954ddc | 606 | |
63adc6fb | 607 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 608 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
609 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
610 | pkt_dev->svlan_cfi); | |
34954ddc | 611 | |
63adc6fb | 612 | if (pkt_dev->tos) |
1ca7768c | 613 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 614 | |
63adc6fb | 615 | if (pkt_dev->traffic_class) |
1ca7768c | 616 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 617 | |
e99b99b4 RO |
618 | if (pkt_dev->node >= 0) |
619 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
620 | ||
ca6549af SW |
621 | seq_printf(seq, " Flags: "); |
622 | ||
222f1806 LC |
623 | if (pkt_dev->flags & F_IPV6) |
624 | seq_printf(seq, "IPV6 "); | |
1da177e4 | 625 | |
222f1806 LC |
626 | if (pkt_dev->flags & F_IPSRC_RND) |
627 | seq_printf(seq, "IPSRC_RND "); | |
1da177e4 | 628 | |
222f1806 LC |
629 | if (pkt_dev->flags & F_IPDST_RND) |
630 | seq_printf(seq, "IPDST_RND "); | |
1da177e4 | 631 | |
222f1806 LC |
632 | if (pkt_dev->flags & F_TXSIZE_RND) |
633 | seq_printf(seq, "TXSIZE_RND "); | |
1da177e4 | 634 | |
222f1806 LC |
635 | if (pkt_dev->flags & F_UDPSRC_RND) |
636 | seq_printf(seq, "UDPSRC_RND "); | |
1da177e4 | 637 | |
222f1806 LC |
638 | if (pkt_dev->flags & F_UDPDST_RND) |
639 | seq_printf(seq, "UDPDST_RND "); | |
1da177e4 | 640 | |
ca6549af SW |
641 | if (pkt_dev->flags & F_MPLS_RND) |
642 | seq_printf(seq, "MPLS_RND "); | |
643 | ||
45b270f8 RO |
644 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
645 | seq_printf(seq, "QUEUE_MAP_RND "); | |
646 | ||
e6fce5b9 RO |
647 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
648 | seq_printf(seq, "QUEUE_MAP_CPU "); | |
649 | ||
007a531b JHS |
650 | if (pkt_dev->cflows) { |
651 | if (pkt_dev->flags & F_FLOW_SEQ) | |
652 | seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/ | |
653 | else | |
654 | seq_printf(seq, "FLOW_RND "); | |
655 | } | |
656 | ||
a553e4a6 JHS |
657 | #ifdef CONFIG_XFRM |
658 | if (pkt_dev->flags & F_IPSEC_ON) | |
659 | seq_printf(seq, "IPSEC "); | |
660 | #endif | |
661 | ||
222f1806 LC |
662 | if (pkt_dev->flags & F_MACSRC_RND) |
663 | seq_printf(seq, "MACSRC_RND "); | |
1da177e4 | 664 | |
222f1806 LC |
665 | if (pkt_dev->flags & F_MACDST_RND) |
666 | seq_printf(seq, "MACDST_RND "); | |
1da177e4 | 667 | |
34954ddc FF |
668 | if (pkt_dev->flags & F_VID_RND) |
669 | seq_printf(seq, "VID_RND "); | |
670 | ||
671 | if (pkt_dev->flags & F_SVID_RND) | |
672 | seq_printf(seq, "SVID_RND "); | |
673 | ||
e99b99b4 RO |
674 | if (pkt_dev->flags & F_NODE) |
675 | seq_printf(seq, "NODE_ALLOC "); | |
676 | ||
222f1806 LC |
677 | seq_puts(seq, "\n"); |
678 | ||
fd29cf72 SH |
679 | /* not really stopped, more like last-running-at */ |
680 | stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at; | |
681 | idle = pkt_dev->idle_acc; | |
682 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 683 | |
222f1806 | 684 | seq_printf(seq, |
fd29cf72 | 685 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 686 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
687 | (unsigned long long)pkt_dev->errors); |
688 | ||
689 | seq_printf(seq, | |
690 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
691 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
692 | (unsigned long long) ktime_to_us(stopped), | |
693 | (unsigned long long) idle); | |
1da177e4 | 694 | |
222f1806 LC |
695 | seq_printf(seq, |
696 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
697 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
698 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 699 | |
222f1806 | 700 | if (pkt_dev->flags & F_IPV6) { |
1da177e4 | 701 | char b1[128], b2[128]; |
222f1806 LC |
702 | fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr); |
703 | fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr); | |
704 | seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1); | |
705 | } else | |
706 | seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n", | |
d50a6b56 | 707 | pkt_dev->cur_saddr, pkt_dev->cur_daddr); |
1da177e4 | 708 | |
222f1806 | 709 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 710 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 711 | |
45b270f8 RO |
712 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
713 | ||
222f1806 | 714 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
715 | |
716 | if (pkt_dev->result[0]) | |
222f1806 | 717 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 718 | else |
222f1806 | 719 | seq_printf(seq, "Result: Idle\n"); |
1da177e4 | 720 | |
d50a6b56 | 721 | return 0; |
1da177e4 LT |
722 | } |
723 | ||
ca6549af | 724 | |
63adc6fb SH |
725 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
726 | __u32 *num) | |
ca6549af SW |
727 | { |
728 | int i = 0; | |
729 | *num = 0; | |
730 | ||
e71a4783 | 731 | for (; i < maxlen; i++) { |
82fd5b5d | 732 | int value; |
ca6549af SW |
733 | char c; |
734 | *num <<= 4; | |
735 | if (get_user(c, &user_buffer[i])) | |
736 | return -EFAULT; | |
82fd5b5d AS |
737 | value = hex_to_bin(c); |
738 | if (value >= 0) | |
739 | *num |= value; | |
ca6549af SW |
740 | else |
741 | break; | |
742 | } | |
743 | return i; | |
744 | } | |
745 | ||
222f1806 LC |
746 | static int count_trail_chars(const char __user * user_buffer, |
747 | unsigned int maxlen) | |
1da177e4 LT |
748 | { |
749 | int i; | |
750 | ||
751 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
752 | char c; |
753 | if (get_user(c, &user_buffer[i])) | |
754 | return -EFAULT; | |
755 | switch (c) { | |
1da177e4 LT |
756 | case '\"': |
757 | case '\n': | |
758 | case '\r': | |
759 | case '\t': | |
760 | case ' ': | |
761 | case '=': | |
762 | break; | |
763 | default: | |
764 | goto done; | |
3ff50b79 | 765 | } |
1da177e4 LT |
766 | } |
767 | done: | |
768 | return i; | |
769 | } | |
770 | ||
222f1806 LC |
771 | static unsigned long num_arg(const char __user * user_buffer, |
772 | unsigned long maxlen, unsigned long *num) | |
1da177e4 | 773 | { |
d6182223 | 774 | int i; |
1da177e4 | 775 | *num = 0; |
222f1806 | 776 | |
d6182223 | 777 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
778 | char c; |
779 | if (get_user(c, &user_buffer[i])) | |
780 | return -EFAULT; | |
781 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 782 | *num *= 10; |
222f1806 | 783 | *num += c - '0'; |
1da177e4 LT |
784 | } else |
785 | break; | |
786 | } | |
787 | return i; | |
788 | } | |
789 | ||
222f1806 | 790 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 | 791 | { |
d6182223 | 792 | int i; |
1da177e4 | 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 | switch (c) { | |
1da177e4 LT |
799 | case '\"': |
800 | case '\n': | |
801 | case '\r': | |
802 | case '\t': | |
803 | case ' ': | |
804 | goto done_str; | |
805 | break; | |
806 | default: | |
807 | break; | |
3ff50b79 | 808 | } |
1da177e4 LT |
809 | } |
810 | done_str: | |
1da177e4 LT |
811 | return i; |
812 | } | |
813 | ||
ca6549af SW |
814 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
815 | { | |
816 | unsigned n = 0; | |
817 | char c; | |
818 | ssize_t i = 0; | |
819 | int len; | |
820 | ||
821 | pkt_dev->nr_labels = 0; | |
822 | do { | |
823 | __u32 tmp; | |
1ca7768c | 824 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
825 | if (len <= 0) |
826 | return len; | |
827 | pkt_dev->labels[n] = htonl(tmp); | |
828 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
829 | pkt_dev->flags |= F_MPLS_RND; | |
830 | i += len; | |
831 | if (get_user(c, &buffer[i])) | |
832 | return -EFAULT; | |
833 | i++; | |
834 | n++; | |
835 | if (n >= MAX_MPLS_LABELS) | |
836 | return -E2BIG; | |
e71a4783 | 837 | } while (c == ','); |
ca6549af SW |
838 | |
839 | pkt_dev->nr_labels = n; | |
840 | return i; | |
841 | } | |
842 | ||
222f1806 LC |
843 | static ssize_t pktgen_if_write(struct file *file, |
844 | const char __user * user_buffer, size_t count, | |
845 | loff_t * offset) | |
1da177e4 | 846 | { |
8a994a71 | 847 | struct seq_file *seq = file->private_data; |
222f1806 | 848 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 849 | int i, max, len; |
1da177e4 LT |
850 | char name[16], valstr[32]; |
851 | unsigned long value = 0; | |
222f1806 LC |
852 | char *pg_result = NULL; |
853 | int tmp = 0; | |
1da177e4 | 854 | char buf[128]; |
222f1806 LC |
855 | |
856 | pg_result = &(pkt_dev->result[0]); | |
857 | ||
1da177e4 | 858 | if (count < 1) { |
f9467eae | 859 | pr_warning("wrong command format\n"); |
1da177e4 LT |
860 | return -EINVAL; |
861 | } | |
222f1806 | 862 | |
d6182223 PG |
863 | max = count; |
864 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 865 | if (tmp < 0) { |
f9467eae | 866 | pr_warning("illegal format\n"); |
222f1806 | 867 | return tmp; |
1da177e4 | 868 | } |
d6182223 | 869 | i = tmp; |
222f1806 | 870 | |
1da177e4 LT |
871 | /* Read variable name */ |
872 | ||
873 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 874 | if (len < 0) |
222f1806 | 875 | return len; |
63adc6fb | 876 | |
1da177e4 | 877 | memset(name, 0, sizeof(name)); |
222f1806 | 878 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
879 | return -EFAULT; |
880 | i += len; | |
222f1806 LC |
881 | |
882 | max = count - i; | |
1da177e4 | 883 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
884 | if (len < 0) |
885 | return len; | |
886 | ||
1da177e4 LT |
887 | i += len; |
888 | ||
889 | if (debug) { | |
86c2c0a8 | 890 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
891 | char tb[copy + 1]; |
892 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 893 | return -EFAULT; |
448d7b5d | 894 | tb[copy] = 0; |
25a8b254 | 895 | printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name, |
222f1806 LC |
896 | (unsigned long)count, tb); |
897 | } | |
1da177e4 LT |
898 | |
899 | if (!strcmp(name, "min_pkt_size")) { | |
900 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 901 | if (len < 0) |
222f1806 | 902 | return len; |
63adc6fb | 903 | |
1da177e4 | 904 | i += len; |
222f1806 LC |
905 | if (value < 14 + 20 + 8) |
906 | value = 14 + 20 + 8; | |
907 | if (value != pkt_dev->min_pkt_size) { | |
908 | pkt_dev->min_pkt_size = value; | |
909 | pkt_dev->cur_pkt_size = value; | |
910 | } | |
911 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
912 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
913 | return count; |
914 | } | |
915 | ||
222f1806 | 916 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 917 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 918 | if (len < 0) |
222f1806 | 919 | return len; |
63adc6fb | 920 | |
1da177e4 | 921 | i += len; |
222f1806 LC |
922 | if (value < 14 + 20 + 8) |
923 | value = 14 + 20 + 8; | |
924 | if (value != pkt_dev->max_pkt_size) { | |
925 | pkt_dev->max_pkt_size = value; | |
926 | pkt_dev->cur_pkt_size = value; | |
927 | } | |
928 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
929 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
930 | return count; |
931 | } | |
932 | ||
222f1806 | 933 | /* Shortcut for min = max */ |
1da177e4 LT |
934 | |
935 | if (!strcmp(name, "pkt_size")) { | |
936 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 937 | if (len < 0) |
222f1806 | 938 | return len; |
63adc6fb | 939 | |
1da177e4 | 940 | i += len; |
222f1806 LC |
941 | if (value < 14 + 20 + 8) |
942 | value = 14 + 20 + 8; | |
943 | if (value != pkt_dev->min_pkt_size) { | |
944 | pkt_dev->min_pkt_size = value; | |
945 | pkt_dev->max_pkt_size = value; | |
946 | pkt_dev->cur_pkt_size = value; | |
947 | } | |
1da177e4 LT |
948 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
949 | return count; | |
950 | } | |
951 | ||
222f1806 | 952 | if (!strcmp(name, "debug")) { |
1da177e4 | 953 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 954 | if (len < 0) |
222f1806 | 955 | return len; |
63adc6fb | 956 | |
1da177e4 | 957 | i += len; |
222f1806 | 958 | debug = value; |
1da177e4 LT |
959 | sprintf(pg_result, "OK: debug=%u", debug); |
960 | return count; | |
961 | } | |
962 | ||
222f1806 | 963 | if (!strcmp(name, "frags")) { |
1da177e4 | 964 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 965 | if (len < 0) |
222f1806 | 966 | return len; |
63adc6fb | 967 | |
1da177e4 LT |
968 | i += len; |
969 | pkt_dev->nfrags = value; | |
970 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
971 | return count; | |
972 | } | |
973 | if (!strcmp(name, "delay")) { | |
974 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 975 | if (len < 0) |
222f1806 | 976 | return len; |
63adc6fb | 977 | |
1da177e4 | 978 | i += len; |
fd29cf72 SH |
979 | if (value == 0x7FFFFFFF) |
980 | pkt_dev->delay = ULLONG_MAX; | |
981 | else | |
9240d715 | 982 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
983 | |
984 | sprintf(pg_result, "OK: delay=%llu", | |
985 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
986 | return count; |
987 | } | |
43d28b65 DT |
988 | if (!strcmp(name, "rate")) { |
989 | len = num_arg(&user_buffer[i], 10, &value); | |
990 | if (len < 0) | |
991 | return len; | |
992 | ||
993 | i += len; | |
994 | if (!value) | |
995 | return len; | |
996 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
997 | if (debug) | |
f9467eae | 998 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
999 | |
1000 | sprintf(pg_result, "OK: rate=%lu", value); | |
1001 | return count; | |
1002 | } | |
1003 | if (!strcmp(name, "ratep")) { | |
1004 | len = num_arg(&user_buffer[i], 10, &value); | |
1005 | if (len < 0) | |
1006 | return len; | |
1007 | ||
1008 | i += len; | |
1009 | if (!value) | |
1010 | return len; | |
1011 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1012 | if (debug) | |
f9467eae | 1013 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1014 | |
1015 | sprintf(pg_result, "OK: rate=%lu", value); | |
1016 | return count; | |
1017 | } | |
222f1806 | 1018 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1019 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1020 | if (len < 0) |
222f1806 | 1021 | return len; |
63adc6fb | 1022 | |
1da177e4 | 1023 | i += len; |
222f1806 LC |
1024 | if (value != pkt_dev->udp_src_min) { |
1025 | pkt_dev->udp_src_min = value; | |
1026 | pkt_dev->cur_udp_src = value; | |
1027 | } | |
1da177e4 LT |
1028 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1029 | return count; | |
1030 | } | |
222f1806 | 1031 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1032 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1033 | if (len < 0) |
222f1806 | 1034 | return len; |
63adc6fb | 1035 | |
1da177e4 | 1036 | i += len; |
222f1806 LC |
1037 | if (value != pkt_dev->udp_dst_min) { |
1038 | pkt_dev->udp_dst_min = value; | |
1039 | pkt_dev->cur_udp_dst = value; | |
1040 | } | |
1da177e4 LT |
1041 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1042 | return count; | |
1043 | } | |
222f1806 | 1044 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1045 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1046 | if (len < 0) |
222f1806 | 1047 | return len; |
63adc6fb | 1048 | |
1da177e4 | 1049 | i += len; |
222f1806 LC |
1050 | if (value != pkt_dev->udp_src_max) { |
1051 | pkt_dev->udp_src_max = value; | |
1052 | pkt_dev->cur_udp_src = value; | |
1053 | } | |
1da177e4 LT |
1054 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1055 | return count; | |
1056 | } | |
222f1806 | 1057 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1058 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1059 | if (len < 0) |
222f1806 | 1060 | return len; |
63adc6fb | 1061 | |
1da177e4 | 1062 | i += len; |
222f1806 LC |
1063 | if (value != pkt_dev->udp_dst_max) { |
1064 | pkt_dev->udp_dst_max = value; | |
1065 | pkt_dev->cur_udp_dst = value; | |
1066 | } | |
1da177e4 LT |
1067 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1068 | return count; | |
1069 | } | |
1070 | if (!strcmp(name, "clone_skb")) { | |
1071 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1072 | if (len < 0) |
222f1806 | 1073 | return len; |
63adc6fb | 1074 | |
1da177e4 | 1075 | i += len; |
222f1806 LC |
1076 | pkt_dev->clone_skb = value; |
1077 | ||
1da177e4 LT |
1078 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1079 | return count; | |
1080 | } | |
1081 | if (!strcmp(name, "count")) { | |
1082 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1083 | if (len < 0) |
222f1806 | 1084 | return len; |
63adc6fb | 1085 | |
1da177e4 LT |
1086 | i += len; |
1087 | pkt_dev->count = value; | |
1088 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1089 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1090 | return count; |
1091 | } | |
1092 | if (!strcmp(name, "src_mac_count")) { | |
1093 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1094 | if (len < 0) |
222f1806 | 1095 | return len; |
63adc6fb | 1096 | |
1da177e4 LT |
1097 | i += len; |
1098 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1099 | pkt_dev->src_mac_count = value; |
1100 | pkt_dev->cur_src_mac_offset = 0; | |
1101 | } | |
1102 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1103 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1104 | return count; |
1105 | } | |
1106 | if (!strcmp(name, "dst_mac_count")) { | |
1107 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1108 | if (len < 0) |
222f1806 | 1109 | return len; |
63adc6fb | 1110 | |
1da177e4 LT |
1111 | i += len; |
1112 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1113 | pkt_dev->dst_mac_count = value; |
1114 | pkt_dev->cur_dst_mac_offset = 0; | |
1115 | } | |
1116 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1117 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1118 | return count; |
1119 | } | |
e99b99b4 RO |
1120 | if (!strcmp(name, "node")) { |
1121 | len = num_arg(&user_buffer[i], 10, &value); | |
1122 | if (len < 0) | |
1123 | return len; | |
1124 | ||
1125 | i += len; | |
1126 | ||
1127 | if (node_possible(value)) { | |
1128 | pkt_dev->node = value; | |
1129 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
1130 | } | |
1131 | else | |
1132 | sprintf(pg_result, "ERROR: node not possible"); | |
1133 | return count; | |
1134 | } | |
1da177e4 | 1135 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1136 | char f[32]; |
1137 | memset(f, 0, 32); | |
1da177e4 | 1138 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1139 | if (len < 0) |
222f1806 | 1140 | return len; |
63adc6fb | 1141 | |
1da177e4 LT |
1142 | if (copy_from_user(f, &user_buffer[i], len)) |
1143 | return -EFAULT; | |
1144 | i += len; | |
222f1806 LC |
1145 | if (strcmp(f, "IPSRC_RND") == 0) |
1146 | pkt_dev->flags |= F_IPSRC_RND; | |
1147 | ||
1148 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1149 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1150 | ||
1151 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1152 | pkt_dev->flags |= F_TXSIZE_RND; | |
1153 | ||
1154 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1155 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1156 | ||
1157 | else if (strcmp(f, "IPDST_RND") == 0) | |
1158 | pkt_dev->flags |= F_IPDST_RND; | |
1159 | ||
1160 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1161 | pkt_dev->flags &= ~F_IPDST_RND; | |
1162 | ||
1163 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1164 | pkt_dev->flags |= F_UDPSRC_RND; | |
1165 | ||
1166 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1167 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1168 | ||
1169 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1170 | pkt_dev->flags |= F_UDPDST_RND; | |
1171 | ||
1172 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1173 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1174 | ||
1175 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1176 | pkt_dev->flags |= F_MACSRC_RND; | |
1177 | ||
1178 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1179 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1180 | ||
1181 | else if (strcmp(f, "MACDST_RND") == 0) | |
1182 | pkt_dev->flags |= F_MACDST_RND; | |
1183 | ||
1184 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1185 | pkt_dev->flags &= ~F_MACDST_RND; | |
1186 | ||
ca6549af SW |
1187 | else if (strcmp(f, "MPLS_RND") == 0) |
1188 | pkt_dev->flags |= F_MPLS_RND; | |
1189 | ||
1190 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1191 | pkt_dev->flags &= ~F_MPLS_RND; | |
1192 | ||
34954ddc FF |
1193 | else if (strcmp(f, "VID_RND") == 0) |
1194 | pkt_dev->flags |= F_VID_RND; | |
1195 | ||
1196 | else if (strcmp(f, "!VID_RND") == 0) | |
1197 | pkt_dev->flags &= ~F_VID_RND; | |
1198 | ||
1199 | else if (strcmp(f, "SVID_RND") == 0) | |
1200 | pkt_dev->flags |= F_SVID_RND; | |
1201 | ||
1202 | else if (strcmp(f, "!SVID_RND") == 0) | |
1203 | pkt_dev->flags &= ~F_SVID_RND; | |
1204 | ||
007a531b JHS |
1205 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1206 | pkt_dev->flags |= F_FLOW_SEQ; | |
1207 | ||
45b270f8 RO |
1208 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1209 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1210 | ||
1211 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1212 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1213 | |
1214 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1215 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1216 | ||
1217 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1218 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1219 | #ifdef CONFIG_XFRM |
1220 | else if (strcmp(f, "IPSEC") == 0) | |
1221 | pkt_dev->flags |= F_IPSEC_ON; | |
1222 | #endif | |
1223 | ||
1ca7768c FF |
1224 | else if (strcmp(f, "!IPV6") == 0) |
1225 | pkt_dev->flags &= ~F_IPV6; | |
1226 | ||
e99b99b4 RO |
1227 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1228 | pkt_dev->flags |= F_NODE; | |
1229 | ||
1230 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1231 | pkt_dev->flags &= ~F_NODE; | |
1232 | ||
222f1806 LC |
1233 | else { |
1234 | sprintf(pg_result, | |
1235 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1236 | f, | |
1ca7768c | 1237 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
e99b99b4 | 1238 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n"); |
222f1806 LC |
1239 | return count; |
1240 | } | |
1da177e4 LT |
1241 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1242 | return count; | |
1243 | } | |
1244 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1245 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1246 | if (len < 0) |
222f1806 | 1247 | return len; |
1da177e4 | 1248 | |
222f1806 | 1249 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1250 | return -EFAULT; |
222f1806 LC |
1251 | buf[len] = 0; |
1252 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1253 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1254 | strncpy(pkt_dev->dst_min, buf, len); | |
1255 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1256 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1257 | } | |
1258 | if (debug) | |
25a8b254 | 1259 | printk(KERN_DEBUG "pktgen: dst_min set to: %s\n", |
222f1806 LC |
1260 | pkt_dev->dst_min); |
1261 | i += len; | |
1da177e4 LT |
1262 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1263 | return count; | |
1264 | } | |
1265 | if (!strcmp(name, "dst_max")) { | |
1266 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1267 | if (len < 0) |
222f1806 | 1268 | return len; |
63adc6fb | 1269 | |
1da177e4 | 1270 | |
222f1806 | 1271 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1272 | return -EFAULT; |
1273 | ||
222f1806 LC |
1274 | buf[len] = 0; |
1275 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1276 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1277 | strncpy(pkt_dev->dst_max, buf, len); | |
1278 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1279 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1280 | } | |
1281 | if (debug) | |
25a8b254 | 1282 | printk(KERN_DEBUG "pktgen: dst_max set to: %s\n", |
222f1806 | 1283 | pkt_dev->dst_max); |
1da177e4 LT |
1284 | i += len; |
1285 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1286 | return count; | |
1287 | } | |
1288 | if (!strcmp(name, "dst6")) { | |
1289 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1290 | if (len < 0) |
1291 | return len; | |
1da177e4 LT |
1292 | |
1293 | pkt_dev->flags |= F_IPV6; | |
1294 | ||
222f1806 | 1295 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1296 | return -EFAULT; |
222f1806 | 1297 | buf[len] = 0; |
1da177e4 LT |
1298 | |
1299 | scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); | |
222f1806 | 1300 | fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr); |
1da177e4 LT |
1301 | |
1302 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr); | |
1303 | ||
222f1806 | 1304 | if (debug) |
25a8b254 | 1305 | printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf); |
1da177e4 | 1306 | |
222f1806 | 1307 | i += len; |
1da177e4 LT |
1308 | sprintf(pg_result, "OK: dst6=%s", buf); |
1309 | return count; | |
1310 | } | |
1311 | if (!strcmp(name, "dst6_min")) { | |
1312 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1313 | if (len < 0) |
1314 | return len; | |
1da177e4 LT |
1315 | |
1316 | pkt_dev->flags |= F_IPV6; | |
1317 | ||
222f1806 | 1318 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1319 | return -EFAULT; |
222f1806 | 1320 | buf[len] = 0; |
1da177e4 LT |
1321 | |
1322 | scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); | |
222f1806 | 1323 | fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); |
1da177e4 | 1324 | |
222f1806 LC |
1325 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, |
1326 | &pkt_dev->min_in6_daddr); | |
1327 | if (debug) | |
25a8b254 | 1328 | printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf); |
1da177e4 | 1329 | |
222f1806 | 1330 | i += len; |
1da177e4 LT |
1331 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1332 | return count; | |
1333 | } | |
1334 | if (!strcmp(name, "dst6_max")) { | |
1335 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1336 | if (len < 0) |
1337 | return len; | |
1da177e4 LT |
1338 | |
1339 | pkt_dev->flags |= F_IPV6; | |
1340 | ||
222f1806 | 1341 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1342 | return -EFAULT; |
222f1806 | 1343 | buf[len] = 0; |
1da177e4 LT |
1344 | |
1345 | scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); | |
222f1806 | 1346 | fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); |
1da177e4 | 1347 | |
222f1806 | 1348 | if (debug) |
25a8b254 | 1349 | printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf); |
1da177e4 | 1350 | |
222f1806 | 1351 | i += len; |
1da177e4 LT |
1352 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1353 | return count; | |
1354 | } | |
1355 | if (!strcmp(name, "src6")) { | |
1356 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1357 | if (len < 0) |
1358 | return len; | |
1da177e4 LT |
1359 | |
1360 | pkt_dev->flags |= F_IPV6; | |
1361 | ||
222f1806 | 1362 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1363 | return -EFAULT; |
222f1806 | 1364 | buf[len] = 0; |
1da177e4 LT |
1365 | |
1366 | scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); | |
222f1806 | 1367 | fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr); |
1da177e4 LT |
1368 | |
1369 | ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr); | |
1370 | ||
222f1806 | 1371 | if (debug) |
25a8b254 | 1372 | printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf); |
222f1806 LC |
1373 | |
1374 | i += len; | |
1da177e4 LT |
1375 | sprintf(pg_result, "OK: src6=%s", buf); |
1376 | return count; | |
1377 | } | |
1378 | if (!strcmp(name, "src_min")) { | |
1379 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1380 | if (len < 0) |
222f1806 | 1381 | return len; |
63adc6fb | 1382 | |
222f1806 | 1383 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1384 | return -EFAULT; |
222f1806 LC |
1385 | buf[len] = 0; |
1386 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1387 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1388 | strncpy(pkt_dev->src_min, buf, len); | |
1389 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1390 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1391 | } | |
1392 | if (debug) | |
25a8b254 | 1393 | printk(KERN_DEBUG "pktgen: src_min set to: %s\n", |
222f1806 | 1394 | pkt_dev->src_min); |
1da177e4 LT |
1395 | i += len; |
1396 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1397 | return count; | |
1398 | } | |
1399 | if (!strcmp(name, "src_max")) { | |
1400 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1401 | if (len < 0) |
222f1806 | 1402 | return len; |
63adc6fb | 1403 | |
222f1806 | 1404 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1405 | return -EFAULT; |
222f1806 LC |
1406 | buf[len] = 0; |
1407 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1408 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1409 | strncpy(pkt_dev->src_max, buf, len); | |
1410 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1411 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1412 | } | |
1413 | if (debug) | |
25a8b254 | 1414 | printk(KERN_DEBUG "pktgen: src_max set to: %s\n", |
222f1806 | 1415 | pkt_dev->src_max); |
1da177e4 LT |
1416 | i += len; |
1417 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1418 | return count; | |
1419 | } | |
1420 | if (!strcmp(name, "dst_mac")) { | |
1421 | char *v = valstr; | |
f404e9a6 | 1422 | unsigned char old_dmac[ETH_ALEN]; |
1da177e4 | 1423 | unsigned char *m = pkt_dev->dst_mac; |
f404e9a6 | 1424 | memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN); |
222f1806 | 1425 | |
1da177e4 | 1426 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1427 | if (len < 0) |
222f1806 | 1428 | return len; |
63adc6fb | 1429 | |
1da177e4 | 1430 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1431 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1432 | return -EFAULT; |
1433 | i += len; | |
1434 | ||
222f1806 | 1435 | for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) { |
451e07a2 AS |
1436 | int value; |
1437 | ||
1438 | value = hex_to_bin(*v); | |
1439 | if (value >= 0) | |
1440 | *m = *m * 16 + value; | |
1441 | ||
1da177e4 LT |
1442 | if (*v == ':') { |
1443 | m++; | |
1444 | *m = 0; | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | /* Set up Dest MAC */ | |
f404e9a6 KK |
1449 | if (compare_ether_addr(old_dmac, pkt_dev->dst_mac)) |
1450 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); | |
222f1806 | 1451 | |
1da177e4 LT |
1452 | sprintf(pg_result, "OK: dstmac"); |
1453 | return count; | |
1454 | } | |
1455 | if (!strcmp(name, "src_mac")) { | |
1456 | char *v = valstr; | |
ce5d0b47 | 1457 | unsigned char old_smac[ETH_ALEN]; |
1da177e4 LT |
1458 | unsigned char *m = pkt_dev->src_mac; |
1459 | ||
ce5d0b47 AR |
1460 | memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN); |
1461 | ||
1da177e4 | 1462 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1463 | if (len < 0) |
222f1806 | 1464 | return len; |
63adc6fb | 1465 | |
1da177e4 | 1466 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1467 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1468 | return -EFAULT; |
1469 | i += len; | |
1470 | ||
222f1806 | 1471 | for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) { |
451e07a2 AS |
1472 | int value; |
1473 | ||
1474 | value = hex_to_bin(*v); | |
1475 | if (value >= 0) | |
1476 | *m = *m * 16 + value; | |
1477 | ||
1da177e4 LT |
1478 | if (*v == ':') { |
1479 | m++; | |
1480 | *m = 0; | |
1481 | } | |
222f1806 | 1482 | } |
1da177e4 | 1483 | |
ce5d0b47 AR |
1484 | /* Set up Src MAC */ |
1485 | if (compare_ether_addr(old_smac, pkt_dev->src_mac)) | |
1486 | memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN); | |
1487 | ||
222f1806 | 1488 | sprintf(pg_result, "OK: srcmac"); |
1da177e4 LT |
1489 | return count; |
1490 | } | |
1491 | ||
222f1806 LC |
1492 | if (!strcmp(name, "clear_counters")) { |
1493 | pktgen_clear_counters(pkt_dev); | |
1494 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1495 | return count; | |
1496 | } | |
1da177e4 LT |
1497 | |
1498 | if (!strcmp(name, "flows")) { | |
1499 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1500 | if (len < 0) |
222f1806 | 1501 | return len; |
63adc6fb | 1502 | |
1da177e4 LT |
1503 | i += len; |
1504 | if (value > MAX_CFLOWS) | |
1505 | value = MAX_CFLOWS; | |
1506 | ||
1507 | pkt_dev->cflows = value; | |
1508 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1509 | return count; | |
1510 | } | |
1511 | ||
1512 | if (!strcmp(name, "flowlen")) { | |
1513 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1514 | if (len < 0) |
222f1806 | 1515 | return len; |
63adc6fb | 1516 | |
1da177e4 LT |
1517 | i += len; |
1518 | pkt_dev->lflow = value; | |
1519 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1520 | return count; | |
1521 | } | |
222f1806 | 1522 | |
45b270f8 RO |
1523 | if (!strcmp(name, "queue_map_min")) { |
1524 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1525 | if (len < 0) |
45b270f8 | 1526 | return len; |
63adc6fb | 1527 | |
45b270f8 RO |
1528 | i += len; |
1529 | pkt_dev->queue_map_min = value; | |
1530 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1531 | return count; | |
1532 | } | |
1533 | ||
1534 | if (!strcmp(name, "queue_map_max")) { | |
1535 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1536 | if (len < 0) |
45b270f8 | 1537 | return len; |
63adc6fb | 1538 | |
45b270f8 RO |
1539 | i += len; |
1540 | pkt_dev->queue_map_max = value; | |
1541 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1542 | return count; | |
1543 | } | |
1544 | ||
ca6549af | 1545 | if (!strcmp(name, "mpls")) { |
cfcabdcc SH |
1546 | unsigned n, cnt; |
1547 | ||
ca6549af | 1548 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1549 | if (len < 0) |
1550 | return len; | |
ca6549af | 1551 | i += len; |
cfcabdcc | 1552 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1553 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1554 | cnt += sprintf(pg_result + cnt, |
1555 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1556 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1557 | |
1558 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1559 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1560 | pkt_dev->svlan_id = 0xffff; | |
1561 | ||
1562 | if (debug) | |
25a8b254 | 1563 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1564 | } |
1565 | return count; | |
1566 | } | |
1567 | ||
1568 | if (!strcmp(name, "vlan_id")) { | |
1569 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1570 | if (len < 0) |
34954ddc | 1571 | return len; |
63adc6fb | 1572 | |
34954ddc FF |
1573 | i += len; |
1574 | if (value <= 4095) { | |
1575 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1576 | ||
1577 | if (debug) | |
25a8b254 | 1578 | printk(KERN_DEBUG "pktgen: VLAN turned on\n"); |
34954ddc FF |
1579 | |
1580 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1581 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1582 | |
1583 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1584 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1585 | } else { | |
1586 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1587 | pkt_dev->svlan_id = 0xffff; | |
1588 | ||
1589 | if (debug) | |
25a8b254 | 1590 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1591 | } |
1592 | return count; | |
1593 | } | |
1594 | ||
1595 | if (!strcmp(name, "vlan_p")) { | |
1596 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1597 | if (len < 0) |
34954ddc | 1598 | return len; |
63adc6fb | 1599 | |
34954ddc FF |
1600 | i += len; |
1601 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1602 | pkt_dev->vlan_p = value; | |
1603 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1604 | } else { | |
1605 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1606 | } | |
1607 | return count; | |
1608 | } | |
1609 | ||
1610 | if (!strcmp(name, "vlan_cfi")) { | |
1611 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1612 | if (len < 0) |
34954ddc | 1613 | return len; |
63adc6fb | 1614 | |
34954ddc FF |
1615 | i += len; |
1616 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1617 | pkt_dev->vlan_cfi = value; | |
1618 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1619 | } else { | |
1620 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1621 | } | |
1622 | return count; | |
1623 | } | |
1624 | ||
1625 | if (!strcmp(name, "svlan_id")) { | |
1626 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1627 | if (len < 0) |
34954ddc | 1628 | return len; |
63adc6fb | 1629 | |
34954ddc FF |
1630 | i += len; |
1631 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1632 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1633 | ||
1634 | if (debug) | |
25a8b254 | 1635 | printk(KERN_DEBUG "pktgen: SVLAN turned on\n"); |
34954ddc FF |
1636 | |
1637 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1638 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1639 | |
1640 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1641 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1642 | } else { | |
1643 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1644 | pkt_dev->svlan_id = 0xffff; | |
1645 | ||
1646 | if (debug) | |
25a8b254 | 1647 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1648 | } |
1649 | return count; | |
1650 | } | |
1651 | ||
1652 | if (!strcmp(name, "svlan_p")) { | |
1653 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1654 | if (len < 0) |
34954ddc | 1655 | return len; |
63adc6fb | 1656 | |
34954ddc FF |
1657 | i += len; |
1658 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1659 | pkt_dev->svlan_p = value; | |
1660 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1661 | } else { | |
1662 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1663 | } | |
1664 | return count; | |
1665 | } | |
1666 | ||
1667 | if (!strcmp(name, "svlan_cfi")) { | |
1668 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1669 | if (len < 0) |
34954ddc | 1670 | return len; |
63adc6fb | 1671 | |
34954ddc FF |
1672 | i += len; |
1673 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1674 | pkt_dev->svlan_cfi = value; | |
1675 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1676 | } else { | |
1677 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1678 | } | |
ca6549af SW |
1679 | return count; |
1680 | } | |
1681 | ||
1ca7768c FF |
1682 | if (!strcmp(name, "tos")) { |
1683 | __u32 tmp_value = 0; | |
1684 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1685 | if (len < 0) |
1ca7768c | 1686 | return len; |
63adc6fb | 1687 | |
1ca7768c FF |
1688 | i += len; |
1689 | if (len == 2) { | |
1690 | pkt_dev->tos = tmp_value; | |
1691 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1692 | } else { | |
1693 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1694 | } | |
1695 | return count; | |
1696 | } | |
1697 | ||
1698 | if (!strcmp(name, "traffic_class")) { | |
1699 | __u32 tmp_value = 0; | |
1700 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1701 | if (len < 0) |
1ca7768c | 1702 | return len; |
63adc6fb | 1703 | |
1ca7768c FF |
1704 | i += len; |
1705 | if (len == 2) { | |
1706 | pkt_dev->traffic_class = tmp_value; | |
1707 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1708 | } else { | |
1709 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1710 | } | |
1711 | return count; | |
1712 | } | |
1713 | ||
1da177e4 LT |
1714 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1715 | return -EINVAL; | |
1716 | } | |
1717 | ||
d50a6b56 | 1718 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1719 | { |
d50a6b56 SH |
1720 | return single_open(file, pktgen_if_show, PDE(inode)->data); |
1721 | } | |
1da177e4 | 1722 | |
9a32144e | 1723 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1724 | .owner = THIS_MODULE, |
1725 | .open = pktgen_if_open, | |
1726 | .read = seq_read, | |
1727 | .llseek = seq_lseek, | |
1728 | .write = pktgen_if_write, | |
1729 | .release = single_release, | |
d50a6b56 | 1730 | }; |
1da177e4 | 1731 | |
d50a6b56 SH |
1732 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1733 | { | |
222f1806 | 1734 | struct pktgen_thread *t = seq->private; |
648fda74 | 1735 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1736 | |
1737 | BUG_ON(!t); | |
1da177e4 | 1738 | |
222f1806 | 1739 | seq_printf(seq, "Running: "); |
1da177e4 | 1740 | |
222f1806 | 1741 | if_lock(t); |
c26a8016 | 1742 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1743 | if (pkt_dev->running) |
593f63b0 | 1744 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1745 | |
222f1806 LC |
1746 | seq_printf(seq, "\nStopped: "); |
1747 | ||
c26a8016 | 1748 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1749 | if (!pkt_dev->running) |
593f63b0 | 1750 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1751 | |
1752 | if (t->result[0]) | |
d50a6b56 | 1753 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1754 | else |
d50a6b56 | 1755 | seq_printf(seq, "\nResult: NA\n"); |
1da177e4 | 1756 | |
222f1806 | 1757 | if_unlock(t); |
1da177e4 | 1758 | |
d50a6b56 | 1759 | return 0; |
1da177e4 LT |
1760 | } |
1761 | ||
d50a6b56 | 1762 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1763 | const char __user * user_buffer, |
1764 | size_t count, loff_t * offset) | |
1da177e4 | 1765 | { |
8a994a71 | 1766 | struct seq_file *seq = file->private_data; |
222f1806 | 1767 | struct pktgen_thread *t = seq->private; |
d6182223 | 1768 | int i, max, len, ret; |
1da177e4 | 1769 | char name[40]; |
222f1806 | 1770 | char *pg_result; |
d50a6b56 | 1771 | |
1da177e4 | 1772 | if (count < 1) { |
222f1806 | 1773 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1774 | return -EINVAL; |
1775 | } | |
d50a6b56 | 1776 | |
d6182223 PG |
1777 | max = count; |
1778 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1779 | if (len < 0) |
d50a6b56 SH |
1780 | return len; |
1781 | ||
d6182223 | 1782 | i = len; |
d50a6b56 | 1783 | |
1da177e4 LT |
1784 | /* Read variable name */ |
1785 | ||
1786 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1787 | if (len < 0) |
d50a6b56 | 1788 | return len; |
222f1806 | 1789 | |
1da177e4 LT |
1790 | memset(name, 0, sizeof(name)); |
1791 | if (copy_from_user(name, &user_buffer[i], len)) | |
1792 | return -EFAULT; | |
1793 | i += len; | |
d50a6b56 | 1794 | |
222f1806 | 1795 | max = count - i; |
1da177e4 | 1796 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1797 | if (len < 0) |
d50a6b56 SH |
1798 | return len; |
1799 | ||
1da177e4 LT |
1800 | i += len; |
1801 | ||
d50a6b56 | 1802 | if (debug) |
25a8b254 DM |
1803 | printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n", |
1804 | name, (unsigned long)count); | |
1da177e4 | 1805 | |
222f1806 | 1806 | if (!t) { |
f9467eae | 1807 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1808 | ret = -EINVAL; |
1809 | goto out; | |
1810 | } | |
1811 | ||
1812 | pg_result = &(t->result[0]); | |
1813 | ||
222f1806 LC |
1814 | if (!strcmp(name, "add_device")) { |
1815 | char f[32]; | |
1816 | memset(f, 0, 32); | |
1da177e4 | 1817 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1818 | if (len < 0) { |
1819 | ret = len; | |
1da177e4 LT |
1820 | goto out; |
1821 | } | |
222f1806 | 1822 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1823 | return -EFAULT; |
1824 | i += len; | |
6146e6a4 | 1825 | mutex_lock(&pktgen_thread_lock); |
222f1806 | 1826 | pktgen_add_device(t, f); |
6146e6a4 | 1827 | mutex_unlock(&pktgen_thread_lock); |
222f1806 LC |
1828 | ret = count; |
1829 | sprintf(pg_result, "OK: add_device=%s", f); | |
1da177e4 LT |
1830 | goto out; |
1831 | } | |
1832 | ||
222f1806 | 1833 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1834 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1835 | t->control |= T_REMDEVALL; |
6146e6a4 | 1836 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1837 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1838 | ret = count; |
222f1806 | 1839 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1840 | goto out; |
1841 | } | |
1842 | ||
222f1806 | 1843 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1844 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1845 | ret = count; |
1da177e4 LT |
1846 | goto out; |
1847 | } | |
1848 | ||
1849 | ret = -EINVAL; | |
222f1806 | 1850 | out: |
1da177e4 LT |
1851 | return ret; |
1852 | } | |
1853 | ||
d50a6b56 | 1854 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1855 | { |
d50a6b56 | 1856 | return single_open(file, pktgen_thread_show, PDE(inode)->data); |
1da177e4 LT |
1857 | } |
1858 | ||
9a32144e | 1859 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1860 | .owner = THIS_MODULE, |
1861 | .open = pktgen_thread_open, | |
1862 | .read = seq_read, | |
1863 | .llseek = seq_lseek, | |
1864 | .write = pktgen_thread_write, | |
1865 | .release = single_release, | |
d50a6b56 | 1866 | }; |
1da177e4 LT |
1867 | |
1868 | /* Think find or remove for NN */ | |
222f1806 | 1869 | static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove) |
1da177e4 LT |
1870 | { |
1871 | struct pktgen_thread *t; | |
1872 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1873 | bool exact = (remove == FIND); |
1da177e4 | 1874 | |
cdcdbe0b | 1875 | list_for_each_entry(t, &pktgen_threads, th_list) { |
3e984840 | 1876 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1877 | if (pkt_dev) { |
222f1806 LC |
1878 | if (remove) { |
1879 | if_lock(t); | |
1880 | pkt_dev->removal_mark = 1; | |
1881 | t->control |= T_REMDEV; | |
1882 | if_unlock(t); | |
1883 | } | |
1da177e4 LT |
1884 | break; |
1885 | } | |
1da177e4 | 1886 | } |
222f1806 | 1887 | return pkt_dev; |
1da177e4 LT |
1888 | } |
1889 | ||
95ed63f7 AK |
1890 | /* |
1891 | * mark a device for removal | |
1892 | */ | |
39df232f | 1893 | static void pktgen_mark_device(const char *ifname) |
1da177e4 LT |
1894 | { |
1895 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1896 | const int max_tries = 10, msec_per_try = 125; |
1897 | int i = 0; | |
95ed63f7 | 1898 | |
6146e6a4 | 1899 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1900 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1901 | |
222f1806 | 1902 | while (1) { |
95ed63f7 AK |
1903 | |
1904 | pkt_dev = __pktgen_NN_threads(ifname, REMOVE); | |
222f1806 LC |
1905 | if (pkt_dev == NULL) |
1906 | break; /* success */ | |
95ed63f7 | 1907 | |
6146e6a4 | 1908 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1909 | pr_debug("%s: waiting for %s to disappear....\n", |
1910 | __func__, ifname); | |
95ed63f7 | 1911 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1912 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1913 | |
1914 | if (++i >= max_tries) { | |
f9467eae JP |
1915 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1916 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1917 | break; |
1918 | } | |
1919 | ||
1920 | } | |
1921 | ||
6146e6a4 | 1922 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1923 | } |
95ed63f7 | 1924 | |
39df232f SH |
1925 | static void pktgen_change_name(struct net_device *dev) |
1926 | { | |
1927 | struct pktgen_thread *t; | |
1928 | ||
1929 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1930 | struct pktgen_dev *pkt_dev; | |
1931 | ||
1932 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
1933 | if (pkt_dev->odev != dev) | |
1934 | continue; | |
1935 | ||
1936 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1937 | ||
2975315b AD |
1938 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
1939 | pg_proc_dir, | |
1940 | &pktgen_if_fops, | |
1941 | pkt_dev); | |
39df232f | 1942 | if (!pkt_dev->entry) |
f9467eae JP |
1943 | pr_err("can't move proc entry for '%s'\n", |
1944 | dev->name); | |
39df232f SH |
1945 | break; |
1946 | } | |
1947 | } | |
1da177e4 LT |
1948 | } |
1949 | ||
222f1806 LC |
1950 | static int pktgen_device_event(struct notifier_block *unused, |
1951 | unsigned long event, void *ptr) | |
1da177e4 | 1952 | { |
39df232f | 1953 | struct net_device *dev = ptr; |
1da177e4 | 1954 | |
721499e8 | 1955 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
1956 | return NOTIFY_DONE; |
1957 | ||
1da177e4 LT |
1958 | /* It is OK that we do not hold the group lock right now, |
1959 | * as we run under the RTNL lock. | |
1960 | */ | |
1961 | ||
1962 | switch (event) { | |
39df232f SH |
1963 | case NETDEV_CHANGENAME: |
1964 | pktgen_change_name(dev); | |
1da177e4 | 1965 | break; |
222f1806 | 1966 | |
1da177e4 | 1967 | case NETDEV_UNREGISTER: |
222f1806 | 1968 | pktgen_mark_device(dev->name); |
1da177e4 | 1969 | break; |
3ff50b79 | 1970 | } |
1da177e4 LT |
1971 | |
1972 | return NOTIFY_DONE; | |
1973 | } | |
1974 | ||
63adc6fb SH |
1975 | static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, |
1976 | const char *ifname) | |
e6fce5b9 RO |
1977 | { |
1978 | char b[IFNAMSIZ+5]; | |
d6182223 | 1979 | int i; |
e6fce5b9 | 1980 | |
63adc6fb SH |
1981 | for (i = 0; ifname[i] != '@'; i++) { |
1982 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
1983 | break; |
1984 | ||
1985 | b[i] = ifname[i]; | |
1986 | } | |
1987 | b[i] = 0; | |
1988 | ||
1989 | return dev_get_by_name(&init_net, b); | |
1990 | } | |
1991 | ||
1992 | ||
1da177e4 LT |
1993 | /* Associate pktgen_dev with a device. */ |
1994 | ||
39df232f | 1995 | static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname) |
222f1806 | 1996 | { |
1da177e4 | 1997 | struct net_device *odev; |
39df232f | 1998 | int err; |
1da177e4 LT |
1999 | |
2000 | /* Clean old setups */ | |
1da177e4 LT |
2001 | if (pkt_dev->odev) { |
2002 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2003 | pkt_dev->odev = NULL; |
2004 | } | |
1da177e4 | 2005 | |
e6fce5b9 | 2006 | odev = pktgen_dev_get_by_name(pkt_dev, ifname); |
1da177e4 | 2007 | if (!odev) { |
f9467eae | 2008 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2009 | return -ENODEV; |
1da177e4 | 2010 | } |
39df232f | 2011 | |
1da177e4 | 2012 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2013 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2014 | err = -EINVAL; |
2015 | } else if (!netif_running(odev)) { | |
f9467eae | 2016 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2017 | err = -ENETDOWN; |
2018 | } else { | |
2019 | pkt_dev->odev = odev; | |
2020 | return 0; | |
1da177e4 | 2021 | } |
1da177e4 | 2022 | |
1da177e4 | 2023 | dev_put(odev); |
39df232f | 2024 | return err; |
1da177e4 LT |
2025 | } |
2026 | ||
2027 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2028 | * structure to have the right information to create/send packets | |
2029 | */ | |
2030 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2031 | { | |
64c00d81 AG |
2032 | int ntxq; |
2033 | ||
222f1806 | 2034 | if (!pkt_dev->odev) { |
f9467eae | 2035 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2036 | sprintf(pkt_dev->result, |
2037 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2038 | return; | |
2039 | } | |
2040 | ||
64c00d81 AG |
2041 | /* make sure that we don't pick a non-existing transmit queue */ |
2042 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2043 | |
64c00d81 | 2044 | if (ntxq <= pkt_dev->queue_map_min) { |
f9467eae JP |
2045 | pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2046 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2047 | pkt_dev->odevname); | |
64c00d81 AG |
2048 | pkt_dev->queue_map_min = ntxq - 1; |
2049 | } | |
88271660 | 2050 | if (pkt_dev->queue_map_max >= ntxq) { |
f9467eae JP |
2051 | pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2052 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2053 | pkt_dev->odevname); | |
64c00d81 AG |
2054 | pkt_dev->queue_map_max = ntxq - 1; |
2055 | } | |
2056 | ||
222f1806 | 2057 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2058 | |
f404e9a6 | 2059 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
222f1806 | 2060 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); |
1da177e4 | 2061 | |
222f1806 | 2062 | /* Set up Dest MAC */ |
f404e9a6 | 2063 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); |
1da177e4 | 2064 | |
222f1806 LC |
2065 | /* Set up pkt size */ |
2066 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; | |
2067 | ||
2068 | if (pkt_dev->flags & F_IPV6) { | |
1da177e4 | 2069 | /* |
4ec93edb | 2070 | * Skip this automatic address setting until locks or functions |
1da177e4 LT |
2071 | * gets exported |
2072 | */ | |
2073 | ||
2074 | #ifdef NOTNOW | |
222f1806 | 2075 | int i, set = 0, err = 1; |
1da177e4 LT |
2076 | struct inet6_dev *idev; |
2077 | ||
222f1806 LC |
2078 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2079 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2080 | set = 1; |
2081 | break; | |
2082 | } | |
2083 | ||
222f1806 LC |
2084 | if (!set) { |
2085 | ||
1da177e4 LT |
2086 | /* |
2087 | * Use linklevel address if unconfigured. | |
2088 | * | |
2089 | * use ipv6_get_lladdr if/when it's get exported | |
2090 | */ | |
2091 | ||
8814c4b5 | 2092 | rcu_read_lock(); |
63adc6fb SH |
2093 | idev = __in6_dev_get(pkt_dev->odev); |
2094 | if (idev) { | |
1da177e4 LT |
2095 | struct inet6_ifaddr *ifp; |
2096 | ||
2097 | read_lock_bh(&idev->lock); | |
222f1806 LC |
2098 | for (ifp = idev->addr_list; ifp; |
2099 | ifp = ifp->if_next) { | |
f64f9e71 JP |
2100 | if (ifp->scope == IFA_LINK && |
2101 | !(ifp->flags & IFA_F_TENTATIVE)) { | |
222f1806 LC |
2102 | ipv6_addr_copy(&pkt_dev-> |
2103 | cur_in6_saddr, | |
2104 | &ifp->addr); | |
1da177e4 LT |
2105 | err = 0; |
2106 | break; | |
2107 | } | |
2108 | } | |
2109 | read_unlock_bh(&idev->lock); | |
2110 | } | |
8814c4b5 | 2111 | rcu_read_unlock(); |
222f1806 | 2112 | if (err) |
f9467eae | 2113 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 LT |
2114 | } |
2115 | #endif | |
222f1806 | 2116 | } else { |
1da177e4 LT |
2117 | pkt_dev->saddr_min = 0; |
2118 | pkt_dev->saddr_max = 0; | |
2119 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2120 | |
2121 | struct in_device *in_dev; | |
1da177e4 LT |
2122 | |
2123 | rcu_read_lock(); | |
e5ed6399 | 2124 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2125 | if (in_dev) { |
2126 | if (in_dev->ifa_list) { | |
222f1806 LC |
2127 | pkt_dev->saddr_min = |
2128 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2129 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2130 | } | |
1da177e4 LT |
2131 | } |
2132 | rcu_read_unlock(); | |
222f1806 | 2133 | } else { |
1da177e4 LT |
2134 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2135 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2136 | } | |
2137 | ||
2138 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2139 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2140 | } | |
222f1806 LC |
2141 | /* Initialize current values. */ |
2142 | pkt_dev->cur_dst_mac_offset = 0; | |
2143 | pkt_dev->cur_src_mac_offset = 0; | |
2144 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2145 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2146 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2147 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2148 | pkt_dev->nflows = 0; |
2149 | } | |
2150 | ||
fd29cf72 SH |
2151 | |
2152 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2153 | { | |
ef87979c | 2154 | ktime_t start_time, end_time; |
417bc4b8 | 2155 | s64 remaining; |
2bc481cf SH |
2156 | struct hrtimer_sleeper t; |
2157 | ||
2158 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2159 | hrtimer_set_expires(&t.timer, spin_until); | |
2160 | ||
43d28b65 | 2161 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2162 | if (remaining <= 0) { |
2163 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2164 | return; |
417bc4b8 | 2165 | } |
2bc481cf | 2166 | |
ef87979c | 2167 | start_time = ktime_now(); |
43d28b65 DT |
2168 | if (remaining < 100000) |
2169 | ndelay(remaining); /* really small just spin */ | |
2bc481cf SH |
2170 | else { |
2171 | /* see do_nanosleep */ | |
2172 | hrtimer_init_sleeper(&t, current); | |
2173 | do { | |
2174 | set_current_state(TASK_INTERRUPTIBLE); | |
2175 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2176 | if (!hrtimer_active(&t.timer)) | |
2177 | t.task = NULL; | |
2178 | ||
2179 | if (likely(t.task)) | |
1da177e4 | 2180 | schedule(); |
1da177e4 | 2181 | |
2bc481cf SH |
2182 | hrtimer_cancel(&t.timer); |
2183 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2184 | __set_current_state(TASK_RUNNING); | |
1da177e4 | 2185 | } |
ef87979c SH |
2186 | end_time = ktime_now(); |
2187 | ||
2188 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2189 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2190 | } |
2191 | ||
16dab72f JHS |
2192 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2193 | { | |
a553e4a6 | 2194 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2195 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2196 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2197 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2198 | } | |
2199 | ||
648fda74 | 2200 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2201 | { |
648fda74 | 2202 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2203 | } |
2204 | ||
2205 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2206 | { | |
2207 | int flow = pkt_dev->curfl; | |
2208 | ||
2209 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2210 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2211 | /* reset time */ | |
2212 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2213 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2214 | pkt_dev->curfl += 1; |
2215 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2216 | pkt_dev->curfl = 0; /*reset */ | |
2217 | } | |
2218 | } else { | |
2219 | flow = random32() % pkt_dev->cflows; | |
1211a645 | 2220 | pkt_dev->curfl = flow; |
007a531b | 2221 | |
1211a645 | 2222 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2223 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2224 | pkt_dev->flows[flow].flags = 0; |
2225 | } | |
007a531b JHS |
2226 | } |
2227 | ||
2228 | return pkt_dev->curfl; | |
2229 | } | |
2230 | ||
a553e4a6 JHS |
2231 | |
2232 | #ifdef CONFIG_XFRM | |
2233 | /* If there was already an IPSEC SA, we keep it as is, else | |
2234 | * we go look for it ... | |
2235 | */ | |
bd55775c | 2236 | #define DUMMY_MARK 0 |
fea1ab0f | 2237 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2238 | { |
2239 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
2240 | if (!x) { | |
2241 | /*slow path: we dont already have xfrm_state*/ | |
bd55775c | 2242 | x = xfrm_stateonly_find(&init_net, DUMMY_MARK, |
5447c5e4 | 2243 | (xfrm_address_t *)&pkt_dev->cur_daddr, |
a553e4a6 JHS |
2244 | (xfrm_address_t *)&pkt_dev->cur_saddr, |
2245 | AF_INET, | |
2246 | pkt_dev->ipsmode, | |
2247 | pkt_dev->ipsproto, 0); | |
2248 | if (x) { | |
2249 | pkt_dev->flows[flow].x = x; | |
2250 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2251 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2252 | } |
2253 | ||
2254 | } | |
2255 | } | |
2256 | #endif | |
fd2ea0a7 DM |
2257 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2258 | { | |
e6fce5b9 RO |
2259 | |
2260 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2261 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2262 | ||
896a7cf8 | 2263 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2264 | __u16 t; |
2265 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
2266 | t = random32() % | |
2267 | (pkt_dev->queue_map_max - | |
2268 | pkt_dev->queue_map_min + 1) | |
2269 | + pkt_dev->queue_map_min; | |
2270 | } else { | |
2271 | t = pkt_dev->cur_queue_map + 1; | |
2272 | if (t > pkt_dev->queue_map_max) | |
2273 | t = pkt_dev->queue_map_min; | |
2274 | } | |
2275 | pkt_dev->cur_queue_map = t; | |
2276 | } | |
bfdbc0ac | 2277 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2278 | } |
2279 | ||
1da177e4 LT |
2280 | /* Increment/randomize headers according to flags and current values |
2281 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2282 | */ | |
222f1806 LC |
2283 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2284 | { | |
2285 | __u32 imn; | |
2286 | __u32 imx; | |
2287 | int flow = 0; | |
1da177e4 | 2288 | |
007a531b JHS |
2289 | if (pkt_dev->cflows) |
2290 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2291 | |
2292 | /* Deal with source MAC */ | |
222f1806 LC |
2293 | if (pkt_dev->src_mac_count > 1) { |
2294 | __u32 mc; | |
2295 | __u32 tmp; | |
2296 | ||
2297 | if (pkt_dev->flags & F_MACSRC_RND) | |
5fa6fc76 | 2298 | mc = random32() % pkt_dev->src_mac_count; |
222f1806 LC |
2299 | else { |
2300 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2301 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2302 | pkt_dev->src_mac_count) |
2303 | pkt_dev->cur_src_mac_offset = 0; | |
2304 | } | |
2305 | ||
2306 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2307 | pkt_dev->hh[11] = tmp; | |
2308 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2309 | pkt_dev->hh[10] = tmp; | |
2310 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2311 | pkt_dev->hh[9] = tmp; | |
2312 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2313 | pkt_dev->hh[8] = tmp; | |
2314 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2315 | pkt_dev->hh[7] = tmp; | |
2316 | } | |
2317 | ||
2318 | /* Deal with Destination MAC */ | |
2319 | if (pkt_dev->dst_mac_count > 1) { | |
2320 | __u32 mc; | |
2321 | __u32 tmp; | |
2322 | ||
2323 | if (pkt_dev->flags & F_MACDST_RND) | |
5fa6fc76 | 2324 | mc = random32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2325 | |
2326 | else { | |
2327 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2328 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2329 | pkt_dev->dst_mac_count) { |
2330 | pkt_dev->cur_dst_mac_offset = 0; | |
2331 | } | |
2332 | } | |
2333 | ||
2334 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2335 | pkt_dev->hh[5] = tmp; | |
2336 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2337 | pkt_dev->hh[4] = tmp; | |
2338 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2339 | pkt_dev->hh[3] = tmp; | |
2340 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2341 | pkt_dev->hh[2] = tmp; | |
2342 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2343 | pkt_dev->hh[1] = tmp; | |
2344 | } | |
2345 | ||
ca6549af SW |
2346 | if (pkt_dev->flags & F_MPLS_RND) { |
2347 | unsigned i; | |
e71a4783 | 2348 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2349 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2350 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
5fa6fc76 | 2351 | ((__force __be32)random32() & |
ca6549af SW |
2352 | htonl(0x000fffff)); |
2353 | } | |
2354 | ||
34954ddc | 2355 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
5fa6fc76 | 2356 | pkt_dev->vlan_id = random32() & (4096-1); |
34954ddc FF |
2357 | } |
2358 | ||
2359 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
5fa6fc76 | 2360 | pkt_dev->svlan_id = random32() & (4096 - 1); |
34954ddc FF |
2361 | } |
2362 | ||
222f1806 LC |
2363 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2364 | if (pkt_dev->flags & F_UDPSRC_RND) | |
5fa6fc76 SH |
2365 | pkt_dev->cur_udp_src = random32() % |
2366 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) | |
2367 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2368 | |
2369 | else { | |
1da177e4 LT |
2370 | pkt_dev->cur_udp_src++; |
2371 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2372 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2373 | } |
2374 | } | |
2375 | ||
2376 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2377 | if (pkt_dev->flags & F_UDPDST_RND) { | |
5fa6fc76 SH |
2378 | pkt_dev->cur_udp_dst = random32() % |
2379 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) | |
2380 | + pkt_dev->udp_dst_min; | |
222f1806 | 2381 | } else { |
1da177e4 | 2382 | pkt_dev->cur_udp_dst++; |
222f1806 | 2383 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2384 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2385 | } |
2386 | } | |
1da177e4 LT |
2387 | |
2388 | if (!(pkt_dev->flags & F_IPV6)) { | |
2389 | ||
63adc6fb SH |
2390 | imn = ntohl(pkt_dev->saddr_min); |
2391 | imx = ntohl(pkt_dev->saddr_max); | |
2392 | if (imn < imx) { | |
1da177e4 | 2393 | __u32 t; |
222f1806 | 2394 | if (pkt_dev->flags & F_IPSRC_RND) |
5fa6fc76 | 2395 | t = random32() % (imx - imn) + imn; |
1da177e4 LT |
2396 | else { |
2397 | t = ntohl(pkt_dev->cur_saddr); | |
2398 | t++; | |
63adc6fb | 2399 | if (t > imx) |
1da177e4 | 2400 | t = imn; |
63adc6fb | 2401 | |
1da177e4 LT |
2402 | } |
2403 | pkt_dev->cur_saddr = htonl(t); | |
2404 | } | |
222f1806 | 2405 | |
007a531b | 2406 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2407 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2408 | } else { | |
252e3346 AV |
2409 | imn = ntohl(pkt_dev->daddr_min); |
2410 | imx = ntohl(pkt_dev->daddr_max); | |
2411 | if (imn < imx) { | |
1da177e4 | 2412 | __u32 t; |
252e3346 | 2413 | __be32 s; |
1da177e4 LT |
2414 | if (pkt_dev->flags & F_IPDST_RND) { |
2415 | ||
5fa6fc76 | 2416 | t = random32() % (imx - imn) + imn; |
252e3346 | 2417 | s = htonl(t); |
1da177e4 | 2418 | |
21cf2253 JP |
2419 | while (ipv4_is_loopback(s) || |
2420 | ipv4_is_multicast(s) || | |
1e637c74 | 2421 | ipv4_is_lbcast(s) || |
21cf2253 JP |
2422 | ipv4_is_zeronet(s) || |
2423 | ipv4_is_local_multicast(s)) { | |
5fa6fc76 | 2424 | t = random32() % (imx - imn) + imn; |
252e3346 | 2425 | s = htonl(t); |
1da177e4 | 2426 | } |
252e3346 AV |
2427 | pkt_dev->cur_daddr = s; |
2428 | } else { | |
1da177e4 LT |
2429 | t = ntohl(pkt_dev->cur_daddr); |
2430 | t++; | |
2431 | if (t > imx) { | |
2432 | t = imn; | |
2433 | } | |
2434 | pkt_dev->cur_daddr = htonl(t); | |
2435 | } | |
2436 | } | |
222f1806 | 2437 | if (pkt_dev->cflows) { |
007a531b | 2438 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2439 | pkt_dev->flows[flow].cur_daddr = |
2440 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2441 | #ifdef CONFIG_XFRM |
2442 | if (pkt_dev->flags & F_IPSEC_ON) | |
2443 | get_ipsec_sa(pkt_dev, flow); | |
2444 | #endif | |
1da177e4 LT |
2445 | pkt_dev->nflows++; |
2446 | } | |
2447 | } | |
222f1806 LC |
2448 | } else { /* IPV6 * */ |
2449 | ||
2450 | if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 && | |
2451 | pkt_dev->min_in6_daddr.s6_addr32[1] == 0 && | |
2452 | pkt_dev->min_in6_daddr.s6_addr32[2] == 0 && | |
2453 | pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ; | |
1da177e4 LT |
2454 | else { |
2455 | int i; | |
2456 | ||
2457 | /* Only random destinations yet */ | |
2458 | ||
222f1806 | 2459 | for (i = 0; i < 4; i++) { |
1da177e4 | 2460 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
5fa6fc76 | 2461 | (((__force __be32)random32() | |
222f1806 LC |
2462 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2463 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2464 | } |
222f1806 | 2465 | } |
1da177e4 LT |
2466 | } |
2467 | ||
222f1806 LC |
2468 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2469 | __u32 t; | |
2470 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
5fa6fc76 SH |
2471 | t = random32() % |
2472 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) | |
2473 | + pkt_dev->min_pkt_size; | |
222f1806 | 2474 | } else { |
1da177e4 | 2475 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2476 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2477 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2478 | } |
2479 | pkt_dev->cur_pkt_size = t; | |
2480 | } | |
1da177e4 | 2481 | |
fd2ea0a7 | 2482 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2483 | |
1da177e4 LT |
2484 | pkt_dev->flows[flow].count++; |
2485 | } | |
2486 | ||
a553e4a6 JHS |
2487 | |
2488 | #ifdef CONFIG_XFRM | |
2489 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) | |
2490 | { | |
2491 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2492 | int err = 0; | |
2493 | struct iphdr *iph; | |
2494 | ||
2495 | if (!x) | |
2496 | return 0; | |
2497 | /* XXX: we dont support tunnel mode for now until | |
2498 | * we resolve the dst issue */ | |
2499 | if (x->props.mode != XFRM_MODE_TRANSPORT) | |
2500 | return 0; | |
2501 | ||
2502 | spin_lock(&x->lock); | |
2503 | iph = ip_hdr(skb); | |
2504 | ||
13996378 | 2505 | err = x->outer_mode->output(x, skb); |
a553e4a6 JHS |
2506 | if (err) |
2507 | goto error; | |
2508 | err = x->type->output(x, skb); | |
2509 | if (err) | |
2510 | goto error; | |
2511 | ||
63adc6fb | 2512 | x->curlft.bytes += skb->len; |
a553e4a6 | 2513 | x->curlft.packets++; |
a553e4a6 JHS |
2514 | error: |
2515 | spin_unlock(&x->lock); | |
2516 | return err; | |
2517 | } | |
2518 | ||
475ac1e4 | 2519 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2520 | { |
2521 | if (pkt_dev->cflows) { | |
2522 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2523 | int i; |
2524 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2525 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2526 | if (x) { | |
2527 | xfrm_state_put(x); | |
2528 | pkt_dev->flows[i].x = NULL; | |
2529 | } | |
2530 | } | |
2531 | } | |
2532 | } | |
2533 | ||
475ac1e4 | 2534 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2535 | struct sk_buff *skb, __be16 protocol) |
2536 | { | |
2537 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2538 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2539 | int nhead = 0; | |
2540 | if (x) { | |
2541 | int ret; | |
2542 | __u8 *eth; | |
2543 | nhead = x->props.header_len - skb_headroom(skb); | |
63adc6fb | 2544 | if (nhead > 0) { |
a553e4a6 JHS |
2545 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2546 | if (ret < 0) { | |
f9467eae JP |
2547 | pr_err("Error expanding ipsec packet %d\n", |
2548 | ret); | |
b4bb4ac8 | 2549 | goto err; |
a553e4a6 JHS |
2550 | } |
2551 | } | |
2552 | ||
2553 | /* ipsec is not expecting ll header */ | |
2554 | skb_pull(skb, ETH_HLEN); | |
2555 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2556 | if (ret) { | |
f9467eae | 2557 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2558 | goto err; |
a553e4a6 JHS |
2559 | } |
2560 | /* restore ll */ | |
2561 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2562 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2563 | *(u16 *) ð[12] = protocol; |
a553e4a6 JHS |
2564 | } |
2565 | } | |
2566 | return 1; | |
b4bb4ac8 IJ |
2567 | err: |
2568 | kfree_skb(skb); | |
2569 | return 0; | |
a553e4a6 JHS |
2570 | } |
2571 | #endif | |
2572 | ||
ca6549af SW |
2573 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2574 | { | |
2575 | unsigned i; | |
63adc6fb | 2576 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2577 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2578 | |
ca6549af SW |
2579 | mpls--; |
2580 | *mpls |= MPLS_STACK_BOTTOM; | |
2581 | } | |
2582 | ||
0f37c605 AV |
2583 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2584 | unsigned int prio) | |
2585 | { | |
2586 | return htons(id | (cfi << 12) | (prio << 13)); | |
2587 | } | |
2588 | ||
222f1806 LC |
2589 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2590 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2591 | { |
2592 | struct sk_buff *skb = NULL; | |
2593 | __u8 *eth; | |
2594 | struct udphdr *udph; | |
2595 | int datalen, iplen; | |
2596 | struct iphdr *iph; | |
222f1806 | 2597 | struct pktgen_hdr *pgh = NULL; |
d5f1ce9a | 2598 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2599 | __be32 *mpls; |
34954ddc FF |
2600 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2601 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2602 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2603 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2604 | u16 queue_map; |
ca6549af SW |
2605 | |
2606 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2607 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2608 | |
34954ddc | 2609 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2610 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2611 | |
64053bee RO |
2612 | /* Update any of the values, used when we're incrementing various |
2613 | * fields. | |
2614 | */ | |
2615 | mod_cur_headers(pkt_dev); | |
eb589063 | 2616 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2617 | |
7ac5459e | 2618 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 RO |
2619 | |
2620 | if (pkt_dev->flags & F_NODE) { | |
2621 | int node; | |
2622 | ||
2623 | if (pkt_dev->node >= 0) | |
2624 | node = pkt_dev->node; | |
2625 | else | |
2626 | node = numa_node_id(); | |
2627 | ||
2628 | skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64 | |
2629 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node); | |
2630 | if (likely(skb)) { | |
2631 | skb_reserve(skb, NET_SKB_PAD); | |
2632 | skb->dev = odev; | |
2633 | } | |
2634 | } | |
2635 | else | |
2636 | skb = __netdev_alloc_skb(odev, | |
2637 | pkt_dev->cur_pkt_size + 64 | |
2638 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
2639 | ||
1da177e4 LT |
2640 | if (!skb) { |
2641 | sprintf(pkt_dev->result, "No memory"); | |
2642 | return NULL; | |
2643 | } | |
2644 | ||
7ac5459e | 2645 | skb_reserve(skb, datalen); |
1da177e4 LT |
2646 | |
2647 | /* Reserve for ethernet and IP header */ | |
2648 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2649 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2650 | if (pkt_dev->nr_labels) | |
2651 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2652 | |
2653 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2654 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2655 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2656 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2657 | pkt_dev->svlan_cfi, | |
2658 | pkt_dev->svlan_p); | |
34954ddc | 2659 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2660 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2661 | } |
2662 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2663 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2664 | pkt_dev->vlan_cfi, | |
2665 | pkt_dev->vlan_p); | |
34954ddc | 2666 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2667 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2668 | } |
2669 | ||
27a884dc | 2670 | skb->network_header = skb->tail; |
b0e380b1 | 2671 | skb->transport_header = skb->network_header + sizeof(struct iphdr); |
ddc7b8e3 | 2672 | skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2673 | skb_set_queue_mapping(skb, queue_map); |
ddc7b8e3 ACM |
2674 | iph = ip_hdr(skb); |
2675 | udph = udp_hdr(skb); | |
1da177e4 | 2676 | |
1da177e4 | 2677 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2678 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2679 | |
ca6549af SW |
2680 | /* Eth + IPh + UDPh + mpls */ |
2681 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2682 | pkt_dev->pkt_overhead; |
222f1806 | 2683 | if (datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2684 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2685 | |
1da177e4 LT |
2686 | udph->source = htons(pkt_dev->cur_udp_src); |
2687 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2688 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
2689 | udph->check = 0; /* No checksum */ | |
1da177e4 LT |
2690 | |
2691 | iph->ihl = 5; | |
2692 | iph->version = 4; | |
2693 | iph->ttl = 32; | |
1ca7768c | 2694 | iph->tos = pkt_dev->tos; |
222f1806 | 2695 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2696 | iph->saddr = pkt_dev->cur_saddr; |
2697 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2698 | iph->id = htons(pkt_dev->ip_id); |
2699 | pkt_dev->ip_id++; | |
1da177e4 LT |
2700 | iph->frag_off = 0; |
2701 | iplen = 20 + 8 + datalen; | |
2702 | iph->tot_len = htons(iplen); | |
2703 | iph->check = 0; | |
222f1806 | 2704 | iph->check = ip_fast_csum((void *)iph, iph->ihl); |
ca6549af | 2705 | skb->protocol = protocol; |
b0e380b1 | 2706 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2707 | pkt_dev->pkt_overhead); |
1da177e4 LT |
2708 | skb->dev = odev; |
2709 | skb->pkt_type = PACKET_HOST; | |
2710 | ||
66ed1e5e | 2711 | if (pkt_dev->nfrags <= 0) { |
222f1806 | 2712 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); |
66ed1e5e ED |
2713 | memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr)); |
2714 | } else { | |
1da177e4 | 2715 | int frags = pkt_dev->nfrags; |
66ed1e5e | 2716 | int i, len; |
1da177e4 | 2717 | |
222f1806 LC |
2718 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); |
2719 | ||
1da177e4 LT |
2720 | if (frags > MAX_SKB_FRAGS) |
2721 | frags = MAX_SKB_FRAGS; | |
222f1806 | 2722 | if (datalen > frags * PAGE_SIZE) { |
66ed1e5e ED |
2723 | len = datalen - frags * PAGE_SIZE; |
2724 | memset(skb_put(skb, len), 0, len); | |
222f1806 | 2725 | datalen = frags * PAGE_SIZE; |
1da177e4 LT |
2726 | } |
2727 | ||
2728 | i = 0; | |
2729 | while (datalen > 0) { | |
66ed1e5e | 2730 | struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0); |
1da177e4 LT |
2731 | skb_shinfo(skb)->frags[i].page = page; |
2732 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
2733 | skb_shinfo(skb)->frags[i].size = | |
222f1806 | 2734 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
1da177e4 LT |
2735 | datalen -= skb_shinfo(skb)->frags[i].size; |
2736 | skb->len += skb_shinfo(skb)->frags[i].size; | |
2737 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
2738 | i++; | |
2739 | skb_shinfo(skb)->nr_frags = i; | |
2740 | } | |
2741 | ||
2742 | while (i < frags) { | |
2743 | int rem; | |
2744 | ||
2745 | if (i == 0) | |
2746 | break; | |
2747 | ||
2748 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
2749 | if (rem == 0) | |
2750 | break; | |
2751 | ||
2752 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
2753 | ||
222f1806 LC |
2754 | skb_shinfo(skb)->frags[i] = |
2755 | skb_shinfo(skb)->frags[i - 1]; | |
1da177e4 | 2756 | get_page(skb_shinfo(skb)->frags[i].page); |
222f1806 LC |
2757 | skb_shinfo(skb)->frags[i].page = |
2758 | skb_shinfo(skb)->frags[i - 1].page; | |
2759 | skb_shinfo(skb)->frags[i].page_offset += | |
2760 | skb_shinfo(skb)->frags[i - 1].size; | |
1da177e4 LT |
2761 | skb_shinfo(skb)->frags[i].size = rem; |
2762 | i++; | |
2763 | skb_shinfo(skb)->nr_frags = i; | |
2764 | } | |
2765 | } | |
2766 | ||
63adc6fb SH |
2767 | /* Stamp the time, and sequence number, |
2768 | * convert them to network byte order | |
2769 | */ | |
222f1806 LC |
2770 | if (pgh) { |
2771 | struct timeval timestamp; | |
2772 | ||
2773 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2774 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2775 | ||
2776 | do_gettimeofday(×tamp); | |
2777 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2778 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2779 | } | |
1da177e4 | 2780 | |
a553e4a6 JHS |
2781 | #ifdef CONFIG_XFRM |
2782 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2783 | return NULL; | |
2784 | #endif | |
2785 | ||
1da177e4 LT |
2786 | return skb; |
2787 | } | |
2788 | ||
2789 | /* | |
4ec93edb | 2790 | * scan_ip6, fmt_ip taken from dietlibc-0.21 |
1da177e4 LT |
2791 | * Author Felix von Leitner <felix-dietlibc@fefe.de> |
2792 | * | |
4ec93edb | 2793 | * Slightly modified for kernel. |
1da177e4 LT |
2794 | * Should be candidate for net/ipv4/utils.c |
2795 | * --ro | |
2796 | */ | |
2797 | ||
222f1806 | 2798 | static unsigned int scan_ip6(const char *s, char ip[16]) |
1da177e4 LT |
2799 | { |
2800 | unsigned int i; | |
222f1806 | 2801 | unsigned int len = 0; |
1da177e4 LT |
2802 | unsigned long u; |
2803 | char suffix[16]; | |
222f1806 LC |
2804 | unsigned int prefixlen = 0; |
2805 | unsigned int suffixlen = 0; | |
252e3346 | 2806 | __be32 tmp; |
cfcabdcc | 2807 | char *pos; |
1da177e4 | 2808 | |
222f1806 LC |
2809 | for (i = 0; i < 16; i++) |
2810 | ip[i] = 0; | |
1da177e4 LT |
2811 | |
2812 | for (;;) { | |
2813 | if (*s == ':') { | |
2814 | len++; | |
222f1806 LC |
2815 | if (s[1] == ':') { /* Found "::", skip to part 2 */ |
2816 | s += 2; | |
1da177e4 LT |
2817 | len++; |
2818 | break; | |
2819 | } | |
2820 | s++; | |
2821 | } | |
1da177e4 | 2822 | |
cfcabdcc SH |
2823 | u = simple_strtoul(s, &pos, 16); |
2824 | i = pos - s; | |
222f1806 LC |
2825 | if (!i) |
2826 | return 0; | |
2827 | if (prefixlen == 12 && s[i] == '.') { | |
1da177e4 LT |
2828 | |
2829 | /* the last 4 bytes may be written as IPv4 address */ | |
2830 | ||
2831 | tmp = in_aton(s); | |
222f1806 LC |
2832 | memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp)); |
2833 | return i + len; | |
1da177e4 LT |
2834 | } |
2835 | ip[prefixlen++] = (u >> 8); | |
2836 | ip[prefixlen++] = (u & 255); | |
222f1806 LC |
2837 | s += i; |
2838 | len += i; | |
2839 | if (prefixlen == 16) | |
1da177e4 LT |
2840 | return len; |
2841 | } | |
2842 | ||
2843 | /* part 2, after "::" */ | |
2844 | for (;;) { | |
2845 | if (*s == ':') { | |
222f1806 | 2846 | if (suffixlen == 0) |
1da177e4 LT |
2847 | break; |
2848 | s++; | |
2849 | len++; | |
222f1806 | 2850 | } else if (suffixlen != 0) |
1da177e4 | 2851 | break; |
cfcabdcc SH |
2852 | |
2853 | u = simple_strtol(s, &pos, 16); | |
2854 | i = pos - s; | |
1da177e4 | 2855 | if (!i) { |
222f1806 LC |
2856 | if (*s) |
2857 | len--; | |
1da177e4 LT |
2858 | break; |
2859 | } | |
222f1806 | 2860 | if (suffixlen + prefixlen <= 12 && s[i] == '.') { |
1da177e4 | 2861 | tmp = in_aton(s); |
222f1806 LC |
2862 | memcpy((struct in_addr *)(suffix + suffixlen), &tmp, |
2863 | sizeof(tmp)); | |
2864 | suffixlen += 4; | |
2865 | len += strlen(s); | |
1da177e4 LT |
2866 | break; |
2867 | } | |
2868 | suffix[suffixlen++] = (u >> 8); | |
2869 | suffix[suffixlen++] = (u & 255); | |
222f1806 LC |
2870 | s += i; |
2871 | len += i; | |
2872 | if (prefixlen + suffixlen == 16) | |
1da177e4 LT |
2873 | break; |
2874 | } | |
222f1806 LC |
2875 | for (i = 0; i < suffixlen; i++) |
2876 | ip[16 - suffixlen + i] = suffix[i]; | |
1da177e4 LT |
2877 | return len; |
2878 | } | |
2879 | ||
222f1806 LC |
2880 | static char tohex(char hexdigit) |
2881 | { | |
2882 | return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0'; | |
1da177e4 LT |
2883 | } |
2884 | ||
222f1806 LC |
2885 | static int fmt_xlong(char *s, unsigned int i) |
2886 | { | |
2887 | char *bak = s; | |
2888 | *s = tohex((i >> 12) & 0xf); | |
2889 | if (s != bak || *s != '0') | |
2890 | ++s; | |
2891 | *s = tohex((i >> 8) & 0xf); | |
2892 | if (s != bak || *s != '0') | |
2893 | ++s; | |
2894 | *s = tohex((i >> 4) & 0xf); | |
2895 | if (s != bak || *s != '0') | |
2896 | ++s; | |
2897 | *s = tohex(i & 0xf); | |
2898 | return s - bak + 1; | |
1da177e4 LT |
2899 | } |
2900 | ||
222f1806 LC |
2901 | static unsigned int fmt_ip6(char *s, const char ip[16]) |
2902 | { | |
1da177e4 LT |
2903 | unsigned int len; |
2904 | unsigned int i; | |
2905 | unsigned int temp; | |
2906 | unsigned int compressing; | |
2907 | int j; | |
2908 | ||
222f1806 LC |
2909 | len = 0; |
2910 | compressing = 0; | |
2911 | for (j = 0; j < 16; j += 2) { | |
1da177e4 LT |
2912 | |
2913 | #ifdef V4MAPPEDPREFIX | |
222f1806 LC |
2914 | if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) { |
2915 | inet_ntoa_r(*(struct in_addr *)(ip + 12), s); | |
2916 | temp = strlen(s); | |
2917 | return len + temp; | |
1da177e4 LT |
2918 | } |
2919 | #endif | |
222f1806 LC |
2920 | temp = ((unsigned long)(unsigned char)ip[j] << 8) + |
2921 | (unsigned long)(unsigned char)ip[j + 1]; | |
1da177e4 LT |
2922 | if (temp == 0) { |
2923 | if (!compressing) { | |
222f1806 LC |
2924 | compressing = 1; |
2925 | if (j == 0) { | |
2926 | *s++ = ':'; | |
2927 | ++len; | |
1da177e4 LT |
2928 | } |
2929 | } | |
2930 | } else { | |
2931 | if (compressing) { | |
222f1806 LC |
2932 | compressing = 0; |
2933 | *s++ = ':'; | |
2934 | ++len; | |
1da177e4 | 2935 | } |
222f1806 LC |
2936 | i = fmt_xlong(s, temp); |
2937 | len += i; | |
2938 | s += i; | |
2939 | if (j < 14) { | |
1da177e4 LT |
2940 | *s++ = ':'; |
2941 | ++len; | |
2942 | } | |
2943 | } | |
2944 | } | |
2945 | if (compressing) { | |
222f1806 LC |
2946 | *s++ = ':'; |
2947 | ++len; | |
1da177e4 | 2948 | } |
222f1806 | 2949 | *s = 0; |
1da177e4 LT |
2950 | return len; |
2951 | } | |
2952 | ||
222f1806 LC |
2953 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2954 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2955 | { |
2956 | struct sk_buff *skb = NULL; | |
2957 | __u8 *eth; | |
2958 | struct udphdr *udph; | |
2959 | int datalen; | |
2960 | struct ipv6hdr *iph; | |
222f1806 | 2961 | struct pktgen_hdr *pgh = NULL; |
d5f1ce9a | 2962 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2963 | __be32 *mpls; |
34954ddc FF |
2964 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2965 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2966 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2967 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2968 | u16 queue_map; |
ca6549af SW |
2969 | |
2970 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2971 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2972 | |
34954ddc | 2973 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2974 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2975 | |
64053bee RO |
2976 | /* Update any of the values, used when we're incrementing various |
2977 | * fields. | |
2978 | */ | |
2979 | mod_cur_headers(pkt_dev); | |
eb589063 | 2980 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2981 | |
e470757d SH |
2982 | skb = __netdev_alloc_skb(odev, |
2983 | pkt_dev->cur_pkt_size + 64 | |
2984 | + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
1da177e4 LT |
2985 | if (!skb) { |
2986 | sprintf(pkt_dev->result, "No memory"); | |
2987 | return NULL; | |
2988 | } | |
2989 | ||
2990 | skb_reserve(skb, 16); | |
2991 | ||
2992 | /* Reserve for ethernet and IP header */ | |
2993 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2994 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2995 | if (pkt_dev->nr_labels) | |
2996 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2997 | |
2998 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2999 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 3000 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
3001 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
3002 | pkt_dev->svlan_cfi, | |
3003 | pkt_dev->svlan_p); | |
34954ddc | 3004 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 3005 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
3006 | } |
3007 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
3008 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
3009 | pkt_dev->vlan_cfi, | |
3010 | pkt_dev->vlan_p); | |
34954ddc | 3011 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 3012 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
3013 | } |
3014 | ||
27a884dc | 3015 | skb->network_header = skb->tail; |
b0e380b1 | 3016 | skb->transport_header = skb->network_header + sizeof(struct ipv6hdr); |
ddc7b8e3 | 3017 | skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 3018 | skb_set_queue_mapping(skb, queue_map); |
ddc7b8e3 ACM |
3019 | iph = ipv6_hdr(skb); |
3020 | udph = udp_hdr(skb); | |
1da177e4 | 3021 | |
1da177e4 | 3022 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 3023 | *(__be16 *) ð[12] = protocol; |
64053bee | 3024 | |
ca6549af SW |
3025 | /* Eth + IPh + UDPh + mpls */ |
3026 | datalen = pkt_dev->cur_pkt_size - 14 - | |
3027 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 3028 | pkt_dev->pkt_overhead; |
1da177e4 | 3029 | |
222f1806 | 3030 | if (datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 LT |
3031 | datalen = sizeof(struct pktgen_hdr); |
3032 | if (net_ratelimit()) | |
f9467eae | 3033 | pr_info("increased datalen to %d\n", datalen); |
1da177e4 LT |
3034 | } |
3035 | ||
3036 | udph->source = htons(pkt_dev->cur_udp_src); | |
3037 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
3038 | udph->len = htons(datalen + sizeof(struct udphdr)); |
3039 | udph->check = 0; /* No checksum */ | |
1da177e4 | 3040 | |
d5f1ce9a | 3041 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 3042 | |
1ca7768c FF |
3043 | if (pkt_dev->traffic_class) { |
3044 | /* Version + traffic class + flow (0) */ | |
252e3346 | 3045 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
3046 | } |
3047 | ||
1da177e4 LT |
3048 | iph->hop_limit = 32; |
3049 | ||
3050 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); | |
3051 | iph->nexthdr = IPPROTO_UDP; | |
3052 | ||
3053 | ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr); | |
3054 | ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr); | |
3055 | ||
b0e380b1 | 3056 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 3057 | pkt_dev->pkt_overhead); |
ca6549af | 3058 | skb->protocol = protocol; |
1da177e4 LT |
3059 | skb->dev = odev; |
3060 | skb->pkt_type = PACKET_HOST; | |
3061 | ||
222f1806 LC |
3062 | if (pkt_dev->nfrags <= 0) |
3063 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); | |
1da177e4 LT |
3064 | else { |
3065 | int frags = pkt_dev->nfrags; | |
3066 | int i; | |
3067 | ||
222f1806 LC |
3068 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); |
3069 | ||
1da177e4 LT |
3070 | if (frags > MAX_SKB_FRAGS) |
3071 | frags = MAX_SKB_FRAGS; | |
222f1806 LC |
3072 | if (datalen > frags * PAGE_SIZE) { |
3073 | skb_put(skb, datalen - frags * PAGE_SIZE); | |
3074 | datalen = frags * PAGE_SIZE; | |
1da177e4 LT |
3075 | } |
3076 | ||
3077 | i = 0; | |
3078 | while (datalen > 0) { | |
3079 | struct page *page = alloc_pages(GFP_KERNEL, 0); | |
3080 | skb_shinfo(skb)->frags[i].page = page; | |
3081 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
3082 | skb_shinfo(skb)->frags[i].size = | |
222f1806 | 3083 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
1da177e4 LT |
3084 | datalen -= skb_shinfo(skb)->frags[i].size; |
3085 | skb->len += skb_shinfo(skb)->frags[i].size; | |
3086 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
3087 | i++; | |
3088 | skb_shinfo(skb)->nr_frags = i; | |
3089 | } | |
3090 | ||
3091 | while (i < frags) { | |
3092 | int rem; | |
3093 | ||
3094 | if (i == 0) | |
3095 | break; | |
3096 | ||
3097 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
3098 | if (rem == 0) | |
3099 | break; | |
3100 | ||
3101 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
3102 | ||
222f1806 LC |
3103 | skb_shinfo(skb)->frags[i] = |
3104 | skb_shinfo(skb)->frags[i - 1]; | |
1da177e4 | 3105 | get_page(skb_shinfo(skb)->frags[i].page); |
222f1806 LC |
3106 | skb_shinfo(skb)->frags[i].page = |
3107 | skb_shinfo(skb)->frags[i - 1].page; | |
3108 | skb_shinfo(skb)->frags[i].page_offset += | |
3109 | skb_shinfo(skb)->frags[i - 1].size; | |
1da177e4 LT |
3110 | skb_shinfo(skb)->frags[i].size = rem; |
3111 | i++; | |
3112 | skb_shinfo(skb)->nr_frags = i; | |
3113 | } | |
3114 | } | |
3115 | ||
63adc6fb SH |
3116 | /* Stamp the time, and sequence number, |
3117 | * convert them to network byte order | |
3118 | * should we update cloned packets too ? | |
3119 | */ | |
222f1806 LC |
3120 | if (pgh) { |
3121 | struct timeval timestamp; | |
3122 | ||
3123 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
3124 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
3125 | ||
3126 | do_gettimeofday(×tamp); | |
3127 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
3128 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
3129 | } | |
34954ddc | 3130 | /* pkt_dev->seq_num++; FF: you really mean this? */ |
222f1806 | 3131 | |
1da177e4 LT |
3132 | return skb; |
3133 | } | |
3134 | ||
475ac1e4 SH |
3135 | static struct sk_buff *fill_packet(struct net_device *odev, |
3136 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3137 | { |
222f1806 | 3138 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
3139 | return fill_packet_ipv6(odev, pkt_dev); |
3140 | else | |
3141 | return fill_packet_ipv4(odev, pkt_dev); | |
3142 | } | |
3143 | ||
222f1806 | 3144 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 3145 | { |
222f1806 LC |
3146 | pkt_dev->seq_num = 1; |
3147 | pkt_dev->idle_acc = 0; | |
1da177e4 | 3148 | pkt_dev->sofar = 0; |
222f1806 LC |
3149 | pkt_dev->tx_bytes = 0; |
3150 | pkt_dev->errors = 0; | |
1da177e4 LT |
3151 | } |
3152 | ||
3153 | /* Set up structure for sending pkts, clear counters */ | |
3154 | ||
3155 | static void pktgen_run(struct pktgen_thread *t) | |
3156 | { | |
c26a8016 | 3157 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3158 | int started = 0; |
3159 | ||
f9467eae | 3160 | func_enter(); |
1da177e4 LT |
3161 | |
3162 | if_lock(t); | |
c26a8016 | 3163 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
1da177e4 LT |
3164 | |
3165 | /* | |
3166 | * setup odev and create initial packet. | |
3167 | */ | |
3168 | pktgen_setup_inject(pkt_dev); | |
3169 | ||
222f1806 | 3170 | if (pkt_dev->odev) { |
1da177e4 | 3171 | pktgen_clear_counters(pkt_dev); |
222f1806 | 3172 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3173 | pkt_dev->skb = NULL; |
fd29cf72 SH |
3174 | pkt_dev->started_at = |
3175 | pkt_dev->next_tx = ktime_now(); | |
3176 | ||
16dab72f | 3177 | set_pkt_overhead(pkt_dev); |
222f1806 | 3178 | |
1da177e4 LT |
3179 | strcpy(pkt_dev->result, "Starting"); |
3180 | started++; | |
222f1806 | 3181 | } else |
1da177e4 LT |
3182 | strcpy(pkt_dev->result, "Error starting"); |
3183 | } | |
3184 | if_unlock(t); | |
222f1806 LC |
3185 | if (started) |
3186 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3187 | } |
3188 | ||
3189 | static void pktgen_stop_all_threads_ifs(void) | |
3190 | { | |
cdcdbe0b | 3191 | struct pktgen_thread *t; |
1da177e4 | 3192 | |
f9467eae | 3193 | func_enter(); |
1da177e4 | 3194 | |
6146e6a4 | 3195 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3196 | |
3197 | list_for_each_entry(t, &pktgen_threads, th_list) | |
95ed63f7 | 3198 | t->control |= T_STOP; |
cdcdbe0b | 3199 | |
6146e6a4 | 3200 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3201 | } |
3202 | ||
648fda74 | 3203 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3204 | { |
648fda74 | 3205 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3206 | |
c26a8016 | 3207 | list_for_each_entry(pkt_dev, &t->if_list, list) |
648fda74 SH |
3208 | if (pkt_dev->running) |
3209 | return 1; | |
3210 | return 0; | |
1da177e4 LT |
3211 | } |
3212 | ||
222f1806 | 3213 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3214 | { |
222f1806 | 3215 | if_lock(t); |
1da177e4 | 3216 | |
222f1806 | 3217 | while (thread_is_running(t)) { |
1da177e4 | 3218 | |
222f1806 | 3219 | if_unlock(t); |
1da177e4 | 3220 | |
222f1806 | 3221 | msleep_interruptible(100); |
1da177e4 | 3222 | |
222f1806 LC |
3223 | if (signal_pending(current)) |
3224 | goto signal; | |
3225 | if_lock(t); | |
3226 | } | |
3227 | if_unlock(t); | |
3228 | return 1; | |
3229 | signal: | |
3230 | return 0; | |
1da177e4 LT |
3231 | } |
3232 | ||
3233 | static int pktgen_wait_all_threads_run(void) | |
3234 | { | |
cdcdbe0b | 3235 | struct pktgen_thread *t; |
1da177e4 | 3236 | int sig = 1; |
222f1806 | 3237 | |
6146e6a4 | 3238 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3239 | |
3240 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1da177e4 | 3241 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3242 | if (sig == 0) |
3243 | break; | |
1da177e4 | 3244 | } |
cdcdbe0b LC |
3245 | |
3246 | if (sig == 0) | |
3247 | list_for_each_entry(t, &pktgen_threads, th_list) | |
1da177e4 | 3248 | t->control |= (T_STOP); |
cdcdbe0b | 3249 | |
6146e6a4 | 3250 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3251 | return sig; |
3252 | } | |
3253 | ||
3254 | static void pktgen_run_all_threads(void) | |
3255 | { | |
cdcdbe0b | 3256 | struct pktgen_thread *t; |
1da177e4 | 3257 | |
f9467eae | 3258 | func_enter(); |
1da177e4 | 3259 | |
6146e6a4 | 3260 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3261 | |
cdcdbe0b | 3262 | list_for_each_entry(t, &pktgen_threads, th_list) |
1da177e4 | 3263 | t->control |= (T_RUN); |
cdcdbe0b | 3264 | |
6146e6a4 | 3265 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3266 | |
63adc6fb SH |
3267 | /* Propagate thread->control */ |
3268 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3269 | |
1da177e4 LT |
3270 | pktgen_wait_all_threads_run(); |
3271 | } | |
3272 | ||
eb37b41c JB |
3273 | static void pktgen_reset_all_threads(void) |
3274 | { | |
3275 | struct pktgen_thread *t; | |
3276 | ||
f9467eae | 3277 | func_enter(); |
eb37b41c JB |
3278 | |
3279 | mutex_lock(&pktgen_thread_lock); | |
3280 | ||
3281 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3282 | t->control |= (T_REMDEVALL); | |
3283 | ||
3284 | mutex_unlock(&pktgen_thread_lock); | |
3285 | ||
63adc6fb SH |
3286 | /* Propagate thread->control */ |
3287 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c JB |
3288 | |
3289 | pktgen_wait_all_threads_run(); | |
3290 | } | |
3291 | ||
1da177e4 LT |
3292 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3293 | { | |
fd29cf72 | 3294 | __u64 bps, mbps, pps; |
222f1806 | 3295 | char *p = pkt_dev->result; |
fd29cf72 SH |
3296 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3297 | pkt_dev->started_at); | |
3298 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3299 | ||
3300 | p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n", | |
3301 | (unsigned long long)ktime_to_us(elapsed), | |
3302 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3303 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3304 | (unsigned long long)pkt_dev->sofar, |
3305 | pkt_dev->cur_pkt_size, nr_frags); | |
3306 | ||
fd29cf72 SH |
3307 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3308 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3309 | |
3310 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3311 | ||
3312 | mbps = bps; | |
3313 | do_div(mbps, 1000000); | |
3314 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3315 | (unsigned long long)pps, | |
3316 | (unsigned long long)mbps, | |
3317 | (unsigned long long)bps, | |
3318 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3319 | } |
1da177e4 LT |
3320 | |
3321 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3322 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3323 | { |
222f1806 | 3324 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3325 | |
222f1806 | 3326 | if (!pkt_dev->running) { |
f9467eae JP |
3327 | pr_warning("interface: %s is already stopped\n", |
3328 | pkt_dev->odevname); | |
222f1806 LC |
3329 | return -EINVAL; |
3330 | } | |
1da177e4 | 3331 | |
3bda06a3 SH |
3332 | kfree_skb(pkt_dev->skb); |
3333 | pkt_dev->skb = NULL; | |
fd29cf72 | 3334 | pkt_dev->stopped_at = ktime_now(); |
222f1806 | 3335 | pkt_dev->running = 0; |
1da177e4 | 3336 | |
95ed63f7 | 3337 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3338 | |
222f1806 | 3339 | return 0; |
1da177e4 LT |
3340 | } |
3341 | ||
222f1806 | 3342 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3343 | { |
c26a8016 | 3344 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3345 | |
1da177e4 LT |
3346 | if_lock(t); |
3347 | ||
c26a8016 LC |
3348 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3349 | if (!pkt_dev->running) | |
222f1806 LC |
3350 | continue; |
3351 | if (best == NULL) | |
c26a8016 | 3352 | best = pkt_dev; |
fd29cf72 | 3353 | else if (ktime_lt(pkt_dev->next_tx, best->next_tx)) |
c26a8016 | 3354 | best = pkt_dev; |
1da177e4 LT |
3355 | } |
3356 | if_unlock(t); | |
222f1806 | 3357 | return best; |
1da177e4 LT |
3358 | } |
3359 | ||
222f1806 LC |
3360 | static void pktgen_stop(struct pktgen_thread *t) |
3361 | { | |
c26a8016 | 3362 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3363 | |
f9467eae | 3364 | func_enter(); |
1da177e4 | 3365 | |
222f1806 | 3366 | if_lock(t); |
1da177e4 | 3367 | |
c26a8016 LC |
3368 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3369 | pktgen_stop_device(pkt_dev); | |
95ed63f7 | 3370 | } |
1da177e4 | 3371 | |
222f1806 | 3372 | if_unlock(t); |
1da177e4 LT |
3373 | } |
3374 | ||
95ed63f7 AK |
3375 | /* |
3376 | * one of our devices needs to be removed - find it | |
3377 | * and remove it | |
3378 | */ | |
3379 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3380 | { | |
c26a8016 LC |
3381 | struct list_head *q, *n; |
3382 | struct pktgen_dev *cur; | |
95ed63f7 | 3383 | |
f9467eae | 3384 | func_enter(); |
95ed63f7 AK |
3385 | |
3386 | if_lock(t); | |
3387 | ||
c26a8016 LC |
3388 | list_for_each_safe(q, n, &t->if_list) { |
3389 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3390 | |
222f1806 LC |
3391 | if (!cur->removal_mark) |
3392 | continue; | |
95ed63f7 | 3393 | |
86dc1ad2 | 3394 | kfree_skb(cur->skb); |
95ed63f7 AK |
3395 | cur->skb = NULL; |
3396 | ||
3397 | pktgen_remove_device(t, cur); | |
3398 | ||
3399 | break; | |
3400 | } | |
3401 | ||
3402 | if_unlock(t); | |
3403 | } | |
3404 | ||
222f1806 | 3405 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3406 | { |
c26a8016 LC |
3407 | struct list_head *q, *n; |
3408 | struct pktgen_dev *cur; | |
222f1806 | 3409 | |
f9467eae JP |
3410 | func_enter(); |
3411 | ||
222f1806 | 3412 | /* Remove all devices, free mem */ |
95ed63f7 | 3413 | |
222f1806 | 3414 | if_lock(t); |
1da177e4 | 3415 | |
c26a8016 LC |
3416 | list_for_each_safe(q, n, &t->if_list) { |
3417 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3418 | |
86dc1ad2 | 3419 | kfree_skb(cur->skb); |
95ed63f7 AK |
3420 | cur->skb = NULL; |
3421 | ||
1da177e4 LT |
3422 | pktgen_remove_device(t, cur); |
3423 | } | |
3424 | ||
222f1806 | 3425 | if_unlock(t); |
1da177e4 LT |
3426 | } |
3427 | ||
222f1806 | 3428 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3429 | { |
222f1806 | 3430 | /* Remove from the thread list */ |
1da177e4 | 3431 | |
ee74baa7 | 3432 | remove_proc_entry(t->tsk->comm, pg_proc_dir); |
1da177e4 | 3433 | |
6146e6a4 | 3434 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3435 | |
cdcdbe0b LC |
3436 | list_del(&t->th_list); |
3437 | ||
6146e6a4 | 3438 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3439 | } |
3440 | ||
ef87979c | 3441 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3442 | { |
fd29cf72 | 3443 | ktime_t idle_start = ktime_now(); |
ef87979c SH |
3444 | schedule(); |
3445 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); | |
3446 | } | |
3791decb | 3447 | |
ef87979c SH |
3448 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3449 | { | |
3450 | ktime_t idle_start = ktime_now(); | |
3791decb | 3451 | |
ef87979c SH |
3452 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3453 | if (signal_pending(current)) | |
3454 | break; | |
3455 | ||
3456 | if (need_resched()) | |
3457 | pktgen_resched(pkt_dev); | |
3458 | else | |
3459 | cpu_relax(); | |
3460 | } | |
fd29cf72 | 3461 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); |
3791decb SH |
3462 | } |
3463 | ||
475ac1e4 | 3464 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3465 | { |
00829823 | 3466 | struct net_device *odev = pkt_dev->odev; |
6fef4c0c | 3467 | netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *) |
00829823 | 3468 | = odev->netdev_ops->ndo_start_xmit; |
fd2ea0a7 | 3469 | struct netdev_queue *txq; |
fd2ea0a7 | 3470 | u16 queue_map; |
1da177e4 LT |
3471 | int ret; |
3472 | ||
ef87979c SH |
3473 | /* If device is offline, then don't send */ |
3474 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3475 | pktgen_stop_device(pkt_dev); | |
3476 | return; | |
fd2ea0a7 DM |
3477 | } |
3478 | ||
ef87979c SH |
3479 | /* This is max DELAY, this has special meaning of |
3480 | * "never transmit" | |
3481 | */ | |
3482 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
3483 | pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX); | |
3791decb | 3484 | return; |
1da177e4 | 3485 | } |
222f1806 | 3486 | |
ef87979c | 3487 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3488 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3489 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3490 | /* build a new pkt */ | |
3491 | kfree_skb(pkt_dev->skb); | |
3492 | ||
3493 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3494 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3495 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3496 | schedule(); |
3497 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3498 | return; | |
1da177e4 | 3499 | } |
baac8564 | 3500 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3501 | pkt_dev->allocated_skbs++; |
3502 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3503 | } |
95ed63f7 | 3504 | |
ef87979c SH |
3505 | if (pkt_dev->delay && pkt_dev->last_ok) |
3506 | spin(pkt_dev, pkt_dev->next_tx); | |
3507 | ||
fd2ea0a7 DM |
3508 | queue_map = skb_get_queue_mapping(pkt_dev->skb); |
3509 | txq = netdev_get_tx_queue(odev, queue_map); | |
3510 | ||
3511 | __netif_tx_lock_bh(txq); | |
5b8db2f5 | 3512 | |
0835acfe | 3513 | if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) { |
ef87979c | 3514 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3515 | pkt_dev->last_ok = 0; |
3516 | goto unlock; | |
3517 | } | |
3518 | atomic_inc(&(pkt_dev->skb->users)); | |
3519 | ret = (*xmit)(pkt_dev->skb, odev); | |
ef87979c SH |
3520 | |
3521 | switch (ret) { | |
3522 | case NETDEV_TX_OK: | |
3523 | txq_trans_update(txq); | |
3524 | pkt_dev->last_ok = 1; | |
3525 | pkt_dev->sofar++; | |
3526 | pkt_dev->seq_num++; | |
baac8564 | 3527 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
ef87979c | 3528 | break; |
f466dba1 JF |
3529 | case NET_XMIT_DROP: |
3530 | case NET_XMIT_CN: | |
3531 | case NET_XMIT_POLICED: | |
3532 | /* skb has been consumed */ | |
3533 | pkt_dev->errors++; | |
3534 | break; | |
ef87979c SH |
3535 | default: /* Drivers are not supposed to return other values! */ |
3536 | if (net_ratelimit()) | |
3537 | pr_info("pktgen: %s xmit error: %d\n", | |
593f63b0 | 3538 | pkt_dev->odevname, ret); |
ef87979c SH |
3539 | pkt_dev->errors++; |
3540 | /* fallthru */ | |
3541 | case NETDEV_TX_LOCKED: | |
3542 | case NETDEV_TX_BUSY: | |
3543 | /* Retry it next time */ | |
3544 | atomic_dec(&(pkt_dev->skb->users)); | |
3545 | pkt_dev->last_ok = 0; | |
222f1806 | 3546 | } |
0835acfe | 3547 | unlock: |
fd2ea0a7 | 3548 | __netif_tx_unlock_bh(txq); |
222f1806 | 3549 | |
1da177e4 LT |
3550 | /* If pkt_dev->count is zero, then run forever */ |
3551 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3552 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3553 | |
1da177e4 LT |
3554 | /* Done with this */ |
3555 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3556 | } |
222f1806 | 3557 | } |
1da177e4 | 3558 | |
4ec93edb | 3559 | /* |
1da177e4 LT |
3560 | * Main loop of the thread goes here |
3561 | */ | |
3562 | ||
ee74baa7 | 3563 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3564 | { |
3565 | DEFINE_WAIT(wait); | |
ee74baa7 | 3566 | struct pktgen_thread *t = arg; |
222f1806 | 3567 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3568 | int cpu = t->cpu; |
1da177e4 | 3569 | |
ee74baa7 | 3570 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3571 | |
3572 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3573 | complete(&t->start_done); |
1da177e4 | 3574 | |
f9467eae | 3575 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3576 | |
ee74baa7 | 3577 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3578 | |
83144186 RW |
3579 | set_freezable(); |
3580 | ||
ee74baa7 DM |
3581 | while (!kthread_should_stop()) { |
3582 | pkt_dev = next_to_run(t); | |
1da177e4 | 3583 | |
ef87979c SH |
3584 | if (unlikely(!pkt_dev && t->control == 0)) { |
3585 | wait_event_interruptible_timeout(t->queue, | |
3586 | t->control != 0, | |
3587 | HZ/10); | |
1b3f720b | 3588 | try_to_freeze(); |
ef87979c | 3589 | continue; |
ee74baa7 | 3590 | } |
1da177e4 | 3591 | |
ee74baa7 | 3592 | __set_current_state(TASK_RUNNING); |
222f1806 | 3593 | |
ef87979c | 3594 | if (likely(pkt_dev)) { |
1da177e4 LT |
3595 | pktgen_xmit(pkt_dev); |
3596 | ||
ef87979c SH |
3597 | if (need_resched()) |
3598 | pktgen_resched(pkt_dev); | |
3599 | else | |
3600 | cpu_relax(); | |
3601 | } | |
3602 | ||
222f1806 | 3603 | if (t->control & T_STOP) { |
1da177e4 LT |
3604 | pktgen_stop(t); |
3605 | t->control &= ~(T_STOP); | |
3606 | } | |
3607 | ||
222f1806 | 3608 | if (t->control & T_RUN) { |
1da177e4 LT |
3609 | pktgen_run(t); |
3610 | t->control &= ~(T_RUN); | |
3611 | } | |
3612 | ||
222f1806 | 3613 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3614 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3615 | t->control &= ~(T_REMDEVALL); |
3616 | } | |
3617 | ||
222f1806 | 3618 | if (t->control & T_REMDEV) { |
95ed63f7 | 3619 | pktgen_rem_one_if(t); |
1da177e4 LT |
3620 | t->control &= ~(T_REMDEV); |
3621 | } | |
3622 | ||
09fe3ef4 AM |
3623 | try_to_freeze(); |
3624 | ||
ee74baa7 | 3625 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3626 | } |
1da177e4 | 3627 | |
f9467eae | 3628 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3629 | pktgen_stop(t); |
1da177e4 | 3630 | |
f9467eae | 3631 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3632 | pktgen_rem_all_ifs(t); |
1da177e4 | 3633 | |
f9467eae | 3634 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3635 | pktgen_rem_thread(t); |
cdcdbe0b | 3636 | |
ee74baa7 | 3637 | return 0; |
1da177e4 LT |
3638 | } |
3639 | ||
222f1806 | 3640 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3641 | const char *ifname, bool exact) |
1da177e4 | 3642 | { |
c26a8016 | 3643 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3644 | size_t len = strlen(ifname); |
222f1806 | 3645 | |
3e984840 | 3646 | if_lock(t); |
c26a8016 | 3647 | list_for_each_entry(p, &t->if_list, list) |
3e984840 ED |
3648 | if (strncmp(p->odevname, ifname, len) == 0) { |
3649 | if (p->odevname[len]) { | |
3650 | if (exact || p->odevname[len] != '@') | |
3651 | continue; | |
3652 | } | |
c26a8016 | 3653 | pkt_dev = p; |
222f1806 LC |
3654 | break; |
3655 | } | |
222f1806 LC |
3656 | |
3657 | if_unlock(t); | |
f9467eae | 3658 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3659 | return pkt_dev; |
1da177e4 LT |
3660 | } |
3661 | ||
4ec93edb YH |
3662 | /* |
3663 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3664 | */ |
3665 | ||
222f1806 LC |
3666 | static int add_dev_to_thread(struct pktgen_thread *t, |
3667 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3668 | { |
3669 | int rv = 0; | |
222f1806 LC |
3670 | |
3671 | if_lock(t); | |
3672 | ||
3673 | if (pkt_dev->pg_thread) { | |
f9467eae | 3674 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3675 | rv = -EBUSY; |
3676 | goto out; | |
3677 | } | |
c26a8016 LC |
3678 | |
3679 | list_add(&pkt_dev->list, &t->if_list); | |
222f1806 | 3680 | pkt_dev->pg_thread = t; |
1da177e4 LT |
3681 | pkt_dev->running = 0; |
3682 | ||
222f1806 LC |
3683 | out: |
3684 | if_unlock(t); | |
3685 | return rv; | |
1da177e4 LT |
3686 | } |
3687 | ||
3688 | /* Called under thread lock */ | |
3689 | ||
222f1806 | 3690 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3691 | { |
222f1806 | 3692 | struct pktgen_dev *pkt_dev; |
39df232f | 3693 | int err; |
3291b9db | 3694 | int node = cpu_to_node(t->cpu); |
222f1806 | 3695 | |
1da177e4 LT |
3696 | /* We don't allow a device to be on several threads */ |
3697 | ||
d50a6b56 SH |
3698 | pkt_dev = __pktgen_NN_threads(ifname, FIND); |
3699 | if (pkt_dev) { | |
f9467eae | 3700 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3701 | return -EBUSY; |
3702 | } | |
d50a6b56 | 3703 | |
3291b9db | 3704 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3705 | if (!pkt_dev) |
3706 | return -ENOMEM; | |
3707 | ||
593f63b0 | 3708 | strcpy(pkt_dev->odevname, ifname); |
3291b9db ED |
3709 | pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3710 | node); | |
d50a6b56 SH |
3711 | if (pkt_dev->flows == NULL) { |
3712 | kfree(pkt_dev); | |
3713 | return -ENOMEM; | |
3714 | } | |
222f1806 | 3715 | memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state)); |
d50a6b56 | 3716 | |
95ed63f7 | 3717 | pkt_dev->removal_mark = 0; |
d50a6b56 SH |
3718 | pkt_dev->min_pkt_size = ETH_ZLEN; |
3719 | pkt_dev->max_pkt_size = ETH_ZLEN; | |
3720 | pkt_dev->nfrags = 0; | |
3721 | pkt_dev->clone_skb = pg_clone_skb_d; | |
fd29cf72 | 3722 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3723 | pkt_dev->count = pg_count_d; |
3724 | pkt_dev->sofar = 0; | |
222f1806 | 3725 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3726 | pkt_dev->udp_src_max = 9; |
3727 | pkt_dev->udp_dst_min = 9; | |
3728 | pkt_dev->udp_dst_max = 9; | |
3729 | ||
34954ddc FF |
3730 | pkt_dev->vlan_p = 0; |
3731 | pkt_dev->vlan_cfi = 0; | |
3732 | pkt_dev->vlan_id = 0xffff; | |
3733 | pkt_dev->svlan_p = 0; | |
3734 | pkt_dev->svlan_cfi = 0; | |
3735 | pkt_dev->svlan_id = 0xffff; | |
e99b99b4 | 3736 | pkt_dev->node = -1; |
34954ddc | 3737 | |
39df232f SH |
3738 | err = pktgen_setup_dev(pkt_dev, ifname); |
3739 | if (err) | |
3740 | goto out1; | |
d50a6b56 | 3741 | |
5efdccbc DL |
3742 | pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir, |
3743 | &pktgen_if_fops, pkt_dev); | |
39df232f | 3744 | if (!pkt_dev->entry) { |
f9467eae | 3745 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3746 | PG_PROC_DIR, ifname); |
39df232f SH |
3747 | err = -EINVAL; |
3748 | goto out2; | |
d50a6b56 | 3749 | } |
a553e4a6 JHS |
3750 | #ifdef CONFIG_XFRM |
3751 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3752 | pkt_dev->ipsproto = IPPROTO_ESP; | |
3753 | #endif | |
d50a6b56 SH |
3754 | |
3755 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3756 | out2: |
3757 | dev_put(pkt_dev->odev); | |
3758 | out1: | |
a553e4a6 JHS |
3759 | #ifdef CONFIG_XFRM |
3760 | free_SAs(pkt_dev); | |
3761 | #endif | |
1d0ebfe7 | 3762 | vfree(pkt_dev->flows); |
39df232f SH |
3763 | kfree(pkt_dev); |
3764 | return err; | |
1da177e4 LT |
3765 | } |
3766 | ||
ee74baa7 | 3767 | static int __init pktgen_create_thread(int cpu) |
1da177e4 | 3768 | { |
cdcdbe0b | 3769 | struct pktgen_thread *t; |
d50a6b56 | 3770 | struct proc_dir_entry *pe; |
ee74baa7 | 3771 | struct task_struct *p; |
222f1806 | 3772 | |
3291b9db ED |
3773 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3774 | cpu_to_node(cpu)); | |
222f1806 | 3775 | if (!t) { |
f9467eae | 3776 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3777 | return -ENOMEM; |
3778 | } | |
3779 | ||
222f1806 | 3780 | spin_lock_init(&t->if_lock); |
1da177e4 | 3781 | t->cpu = cpu; |
222f1806 | 3782 | |
ee74baa7 DM |
3783 | INIT_LIST_HEAD(&t->if_list); |
3784 | ||
3785 | list_add_tail(&t->th_list, &pktgen_threads); | |
d3ede327 | 3786 | init_completion(&t->start_done); |
ee74baa7 DM |
3787 | |
3788 | p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu); | |
3789 | if (IS_ERR(p)) { | |
f9467eae | 3790 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3791 | list_del(&t->th_list); |
3792 | kfree(t); | |
3793 | return PTR_ERR(p); | |
3794 | } | |
3795 | kthread_bind(p, cpu); | |
3796 | t->tsk = p; | |
3797 | ||
5efdccbc DL |
3798 | pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir, |
3799 | &pktgen_thread_fops, t); | |
222f1806 | 3800 | if (!pe) { |
f9467eae | 3801 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3802 | PG_PROC_DIR, t->tsk->comm); |
3803 | kthread_stop(p); | |
3804 | list_del(&t->th_list); | |
222f1806 LC |
3805 | kfree(t); |
3806 | return -EINVAL; | |
3807 | } | |
d50a6b56 | 3808 | |
ee74baa7 | 3809 | wake_up_process(p); |
d3ede327 | 3810 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3811 | |
3812 | return 0; | |
3813 | } | |
3814 | ||
4ec93edb YH |
3815 | /* |
3816 | * Removes a device from the thread if_list. | |
1da177e4 | 3817 | */ |
222f1806 LC |
3818 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3819 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3820 | { |
c26a8016 LC |
3821 | struct list_head *q, *n; |
3822 | struct pktgen_dev *p; | |
1da177e4 | 3823 | |
c26a8016 LC |
3824 | list_for_each_safe(q, n, &t->if_list) { |
3825 | p = list_entry(q, struct pktgen_dev, list); | |
3826 | if (p == pkt_dev) | |
3827 | list_del(&p->list); | |
1da177e4 LT |
3828 | } |
3829 | } | |
3830 | ||
222f1806 LC |
3831 | static int pktgen_remove_device(struct pktgen_thread *t, |
3832 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3833 | { |
3834 | ||
f9467eae | 3835 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3836 | |
222f1806 | 3837 | if (pkt_dev->running) { |
f9467eae | 3838 | pr_warning("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3839 | pktgen_stop_device(pkt_dev); |
3840 | } | |
3841 | ||
3842 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3843 | |
3844 | if (pkt_dev->odev) { | |
3845 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3846 | pkt_dev->odev = NULL; |
3847 | } | |
3848 | ||
1da177e4 LT |
3849 | /* And update the thread if_list */ |
3850 | ||
3851 | _rem_dev_from_if_list(t, pkt_dev); | |
3852 | ||
39df232f SH |
3853 | if (pkt_dev->entry) |
3854 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1da177e4 | 3855 | |
a553e4a6 JHS |
3856 | #ifdef CONFIG_XFRM |
3857 | free_SAs(pkt_dev); | |
3858 | #endif | |
1d0ebfe7 | 3859 | vfree(pkt_dev->flows); |
1da177e4 | 3860 | kfree(pkt_dev); |
222f1806 | 3861 | return 0; |
1da177e4 LT |
3862 | } |
3863 | ||
222f1806 | 3864 | static int __init pg_init(void) |
1da177e4 LT |
3865 | { |
3866 | int cpu; | |
d50a6b56 | 3867 | struct proc_dir_entry *pe; |
1da177e4 | 3868 | |
f9467eae | 3869 | pr_info("%s", version); |
1da177e4 | 3870 | |
457c4cbc | 3871 | pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net); |
d50a6b56 SH |
3872 | if (!pg_proc_dir) |
3873 | return -ENODEV; | |
1da177e4 | 3874 | |
25296d59 | 3875 | pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops); |
222f1806 | 3876 | if (pe == NULL) { |
f9467eae | 3877 | pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL); |
457c4cbc | 3878 | proc_net_remove(&init_net, PG_PROC_DIR); |
222f1806 LC |
3879 | return -EINVAL; |
3880 | } | |
1da177e4 | 3881 | |
1da177e4 LT |
3882 | /* Register us to receive netdevice events */ |
3883 | register_netdevice_notifier(&pktgen_notifier_block); | |
222f1806 | 3884 | |
670c02c2 | 3885 | for_each_online_cpu(cpu) { |
8024bb24 | 3886 | int err; |
1da177e4 | 3887 | |
ee74baa7 | 3888 | err = pktgen_create_thread(cpu); |
8024bb24 | 3889 | if (err) |
f9467eae JP |
3890 | pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n", |
3891 | cpu, err); | |
222f1806 | 3892 | } |
8024bb24 LC |
3893 | |
3894 | if (list_empty(&pktgen_threads)) { | |
f9467eae | 3895 | pr_err("ERROR: Initialization failed for all threads\n"); |
8024bb24 LC |
3896 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3897 | remove_proc_entry(PGCTRL, pg_proc_dir); | |
457c4cbc | 3898 | proc_net_remove(&init_net, PG_PROC_DIR); |
8024bb24 LC |
3899 | return -ENODEV; |
3900 | } | |
3901 | ||
222f1806 | 3902 | return 0; |
1da177e4 LT |
3903 | } |
3904 | ||
3905 | static void __exit pg_cleanup(void) | |
3906 | { | |
cdcdbe0b LC |
3907 | struct pktgen_thread *t; |
3908 | struct list_head *q, *n; | |
1da177e4 | 3909 | |
222f1806 | 3910 | /* Stop all interfaces & threads */ |
1da177e4 | 3911 | |
cdcdbe0b LC |
3912 | list_for_each_safe(q, n, &pktgen_threads) { |
3913 | t = list_entry(q, struct pktgen_thread, th_list); | |
ee74baa7 DM |
3914 | kthread_stop(t->tsk); |
3915 | kfree(t); | |
222f1806 | 3916 | } |
1da177e4 | 3917 | |
222f1806 | 3918 | /* Un-register us from receiving netdevice events */ |
1da177e4 LT |
3919 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3920 | ||
222f1806 | 3921 | /* Clean up proc file system */ |
d50a6b56 | 3922 | remove_proc_entry(PGCTRL, pg_proc_dir); |
457c4cbc | 3923 | proc_net_remove(&init_net, PG_PROC_DIR); |
1da177e4 LT |
3924 | } |
3925 | ||
1da177e4 LT |
3926 | module_init(pg_init); |
3927 | module_exit(pg_cleanup); | |
3928 | ||
c3d2f52d | 3929 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3930 | MODULE_DESCRIPTION("Packet Generator tool"); |
3931 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3932 | MODULE_VERSION(VERSION); |
1da177e4 | 3933 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3934 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3935 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3936 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3937 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3938 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3939 | module_param(debug, int, 0); |
c3d2f52d | 3940 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |