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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++) { |
ca6549af SW |
732 | char c; |
733 | *num <<= 4; | |
734 | if (get_user(c, &user_buffer[i])) | |
735 | return -EFAULT; | |
736 | if ((c >= '0') && (c <= '9')) | |
737 | *num |= c - '0'; | |
738 | else if ((c >= 'a') && (c <= 'f')) | |
739 | *num |= c - 'a' + 10; | |
740 | else if ((c >= 'A') && (c <= 'F')) | |
741 | *num |= c - 'A' + 10; | |
742 | else | |
743 | break; | |
744 | } | |
745 | return i; | |
746 | } | |
747 | ||
222f1806 LC |
748 | static int count_trail_chars(const char __user * user_buffer, |
749 | unsigned int maxlen) | |
1da177e4 LT |
750 | { |
751 | int i; | |
752 | ||
753 | for (i = 0; i < maxlen; i++) { | |
222f1806 LC |
754 | char c; |
755 | if (get_user(c, &user_buffer[i])) | |
756 | return -EFAULT; | |
757 | switch (c) { | |
1da177e4 LT |
758 | case '\"': |
759 | case '\n': | |
760 | case '\r': | |
761 | case '\t': | |
762 | case ' ': | |
763 | case '=': | |
764 | break; | |
765 | default: | |
766 | goto done; | |
3ff50b79 | 767 | } |
1da177e4 LT |
768 | } |
769 | done: | |
770 | return i; | |
771 | } | |
772 | ||
222f1806 LC |
773 | static unsigned long num_arg(const char __user * user_buffer, |
774 | unsigned long maxlen, unsigned long *num) | |
1da177e4 LT |
775 | { |
776 | int i = 0; | |
777 | *num = 0; | |
222f1806 LC |
778 | |
779 | for (; i < maxlen; i++) { | |
780 | char c; | |
781 | if (get_user(c, &user_buffer[i])) | |
782 | return -EFAULT; | |
783 | if ((c >= '0') && (c <= '9')) { | |
1da177e4 | 784 | *num *= 10; |
222f1806 | 785 | *num += c - '0'; |
1da177e4 LT |
786 | } else |
787 | break; | |
788 | } | |
789 | return i; | |
790 | } | |
791 | ||
222f1806 | 792 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) |
1da177e4 LT |
793 | { |
794 | int i = 0; | |
795 | ||
222f1806 LC |
796 | for (; i < maxlen; i++) { |
797 | char c; | |
798 | if (get_user(c, &user_buffer[i])) | |
799 | return -EFAULT; | |
800 | switch (c) { | |
1da177e4 LT |
801 | case '\"': |
802 | case '\n': | |
803 | case '\r': | |
804 | case '\t': | |
805 | case ' ': | |
806 | goto done_str; | |
807 | break; | |
808 | default: | |
809 | break; | |
3ff50b79 | 810 | } |
1da177e4 LT |
811 | } |
812 | done_str: | |
1da177e4 LT |
813 | return i; |
814 | } | |
815 | ||
ca6549af SW |
816 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
817 | { | |
818 | unsigned n = 0; | |
819 | char c; | |
820 | ssize_t i = 0; | |
821 | int len; | |
822 | ||
823 | pkt_dev->nr_labels = 0; | |
824 | do { | |
825 | __u32 tmp; | |
1ca7768c | 826 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
827 | if (len <= 0) |
828 | return len; | |
829 | pkt_dev->labels[n] = htonl(tmp); | |
830 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
831 | pkt_dev->flags |= F_MPLS_RND; | |
832 | i += len; | |
833 | if (get_user(c, &buffer[i])) | |
834 | return -EFAULT; | |
835 | i++; | |
836 | n++; | |
837 | if (n >= MAX_MPLS_LABELS) | |
838 | return -E2BIG; | |
e71a4783 | 839 | } while (c == ','); |
ca6549af SW |
840 | |
841 | pkt_dev->nr_labels = n; | |
842 | return i; | |
843 | } | |
844 | ||
222f1806 LC |
845 | static ssize_t pktgen_if_write(struct file *file, |
846 | const char __user * user_buffer, size_t count, | |
847 | loff_t * offset) | |
1da177e4 | 848 | { |
222f1806 LC |
849 | struct seq_file *seq = (struct seq_file *)file->private_data; |
850 | struct pktgen_dev *pkt_dev = seq->private; | |
1da177e4 LT |
851 | int i = 0, max, len; |
852 | char name[16], valstr[32]; | |
853 | unsigned long value = 0; | |
222f1806 LC |
854 | char *pg_result = NULL; |
855 | int tmp = 0; | |
1da177e4 | 856 | char buf[128]; |
222f1806 LC |
857 | |
858 | pg_result = &(pkt_dev->result[0]); | |
859 | ||
1da177e4 | 860 | if (count < 1) { |
f9467eae | 861 | pr_warning("wrong command format\n"); |
1da177e4 LT |
862 | return -EINVAL; |
863 | } | |
222f1806 | 864 | |
1da177e4 LT |
865 | max = count - i; |
866 | tmp = count_trail_chars(&user_buffer[i], max); | |
222f1806 | 867 | if (tmp < 0) { |
f9467eae | 868 | pr_warning("illegal format\n"); |
222f1806 | 869 | return tmp; |
1da177e4 | 870 | } |
222f1806 LC |
871 | i += tmp; |
872 | ||
1da177e4 LT |
873 | /* Read variable name */ |
874 | ||
875 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 876 | if (len < 0) |
222f1806 | 877 | return len; |
63adc6fb | 878 | |
1da177e4 | 879 | memset(name, 0, sizeof(name)); |
222f1806 | 880 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
881 | return -EFAULT; |
882 | i += len; | |
222f1806 LC |
883 | |
884 | max = count - i; | |
1da177e4 | 885 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
886 | if (len < 0) |
887 | return len; | |
888 | ||
1da177e4 LT |
889 | i += len; |
890 | ||
891 | if (debug) { | |
222f1806 LC |
892 | char tb[count + 1]; |
893 | if (copy_from_user(tb, user_buffer, count)) | |
1da177e4 | 894 | return -EFAULT; |
222f1806 | 895 | tb[count] = 0; |
25a8b254 | 896 | printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name, |
222f1806 LC |
897 | (unsigned long)count, tb); |
898 | } | |
1da177e4 LT |
899 | |
900 | if (!strcmp(name, "min_pkt_size")) { | |
901 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 902 | if (len < 0) |
222f1806 | 903 | return len; |
63adc6fb | 904 | |
1da177e4 | 905 | i += len; |
222f1806 LC |
906 | if (value < 14 + 20 + 8) |
907 | value = 14 + 20 + 8; | |
908 | if (value != pkt_dev->min_pkt_size) { | |
909 | pkt_dev->min_pkt_size = value; | |
910 | pkt_dev->cur_pkt_size = value; | |
911 | } | |
912 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
913 | pkt_dev->min_pkt_size); | |
1da177e4 LT |
914 | return count; |
915 | } | |
916 | ||
222f1806 | 917 | if (!strcmp(name, "max_pkt_size")) { |
1da177e4 | 918 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 919 | if (len < 0) |
222f1806 | 920 | return len; |
63adc6fb | 921 | |
1da177e4 | 922 | i += len; |
222f1806 LC |
923 | if (value < 14 + 20 + 8) |
924 | value = 14 + 20 + 8; | |
925 | if (value != pkt_dev->max_pkt_size) { | |
926 | pkt_dev->max_pkt_size = value; | |
927 | pkt_dev->cur_pkt_size = value; | |
928 | } | |
929 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
930 | pkt_dev->max_pkt_size); | |
1da177e4 LT |
931 | return count; |
932 | } | |
933 | ||
222f1806 | 934 | /* Shortcut for min = max */ |
1da177e4 LT |
935 | |
936 | if (!strcmp(name, "pkt_size")) { | |
937 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 938 | if (len < 0) |
222f1806 | 939 | return len; |
63adc6fb | 940 | |
1da177e4 | 941 | i += len; |
222f1806 LC |
942 | if (value < 14 + 20 + 8) |
943 | value = 14 + 20 + 8; | |
944 | if (value != pkt_dev->min_pkt_size) { | |
945 | pkt_dev->min_pkt_size = value; | |
946 | pkt_dev->max_pkt_size = value; | |
947 | pkt_dev->cur_pkt_size = value; | |
948 | } | |
1da177e4 LT |
949 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); |
950 | return count; | |
951 | } | |
952 | ||
222f1806 | 953 | if (!strcmp(name, "debug")) { |
1da177e4 | 954 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 955 | if (len < 0) |
222f1806 | 956 | return len; |
63adc6fb | 957 | |
1da177e4 | 958 | i += len; |
222f1806 | 959 | debug = value; |
1da177e4 LT |
960 | sprintf(pg_result, "OK: debug=%u", debug); |
961 | return count; | |
962 | } | |
963 | ||
222f1806 | 964 | if (!strcmp(name, "frags")) { |
1da177e4 | 965 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 966 | if (len < 0) |
222f1806 | 967 | return len; |
63adc6fb | 968 | |
1da177e4 LT |
969 | i += len; |
970 | pkt_dev->nfrags = value; | |
971 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
972 | return count; | |
973 | } | |
974 | if (!strcmp(name, "delay")) { | |
975 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 976 | if (len < 0) |
222f1806 | 977 | return len; |
63adc6fb | 978 | |
1da177e4 | 979 | i += len; |
fd29cf72 SH |
980 | if (value == 0x7FFFFFFF) |
981 | pkt_dev->delay = ULLONG_MAX; | |
982 | else | |
9240d715 | 983 | pkt_dev->delay = (u64)value; |
fd29cf72 SH |
984 | |
985 | sprintf(pg_result, "OK: delay=%llu", | |
986 | (unsigned long long) pkt_dev->delay); | |
1da177e4 LT |
987 | return count; |
988 | } | |
43d28b65 DT |
989 | if (!strcmp(name, "rate")) { |
990 | len = num_arg(&user_buffer[i], 10, &value); | |
991 | if (len < 0) | |
992 | return len; | |
993 | ||
994 | i += len; | |
995 | if (!value) | |
996 | return len; | |
997 | pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value; | |
998 | if (debug) | |
f9467eae | 999 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1000 | |
1001 | sprintf(pg_result, "OK: rate=%lu", value); | |
1002 | return count; | |
1003 | } | |
1004 | if (!strcmp(name, "ratep")) { | |
1005 | len = num_arg(&user_buffer[i], 10, &value); | |
1006 | if (len < 0) | |
1007 | return len; | |
1008 | ||
1009 | i += len; | |
1010 | if (!value) | |
1011 | return len; | |
1012 | pkt_dev->delay = NSEC_PER_SEC/value; | |
1013 | if (debug) | |
f9467eae | 1014 | pr_info("Delay set at: %llu ns\n", pkt_dev->delay); |
43d28b65 DT |
1015 | |
1016 | sprintf(pg_result, "OK: rate=%lu", value); | |
1017 | return count; | |
1018 | } | |
222f1806 | 1019 | if (!strcmp(name, "udp_src_min")) { |
1da177e4 | 1020 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1021 | if (len < 0) |
222f1806 | 1022 | return len; |
63adc6fb | 1023 | |
1da177e4 | 1024 | i += len; |
222f1806 LC |
1025 | if (value != pkt_dev->udp_src_min) { |
1026 | pkt_dev->udp_src_min = value; | |
1027 | pkt_dev->cur_udp_src = value; | |
1028 | } | |
1da177e4 LT |
1029 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); |
1030 | return count; | |
1031 | } | |
222f1806 | 1032 | if (!strcmp(name, "udp_dst_min")) { |
1da177e4 | 1033 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1034 | if (len < 0) |
222f1806 | 1035 | return len; |
63adc6fb | 1036 | |
1da177e4 | 1037 | i += len; |
222f1806 LC |
1038 | if (value != pkt_dev->udp_dst_min) { |
1039 | pkt_dev->udp_dst_min = value; | |
1040 | pkt_dev->cur_udp_dst = value; | |
1041 | } | |
1da177e4 LT |
1042 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); |
1043 | return count; | |
1044 | } | |
222f1806 | 1045 | if (!strcmp(name, "udp_src_max")) { |
1da177e4 | 1046 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1047 | if (len < 0) |
222f1806 | 1048 | return len; |
63adc6fb | 1049 | |
1da177e4 | 1050 | i += len; |
222f1806 LC |
1051 | if (value != pkt_dev->udp_src_max) { |
1052 | pkt_dev->udp_src_max = value; | |
1053 | pkt_dev->cur_udp_src = value; | |
1054 | } | |
1da177e4 LT |
1055 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); |
1056 | return count; | |
1057 | } | |
222f1806 | 1058 | if (!strcmp(name, "udp_dst_max")) { |
1da177e4 | 1059 | len = num_arg(&user_buffer[i], 10, &value); |
63adc6fb | 1060 | if (len < 0) |
222f1806 | 1061 | return len; |
63adc6fb | 1062 | |
1da177e4 | 1063 | i += len; |
222f1806 LC |
1064 | if (value != pkt_dev->udp_dst_max) { |
1065 | pkt_dev->udp_dst_max = value; | |
1066 | pkt_dev->cur_udp_dst = value; | |
1067 | } | |
1da177e4 LT |
1068 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); |
1069 | return count; | |
1070 | } | |
1071 | if (!strcmp(name, "clone_skb")) { | |
1072 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1073 | if (len < 0) |
222f1806 | 1074 | return len; |
63adc6fb | 1075 | |
1da177e4 | 1076 | i += len; |
222f1806 LC |
1077 | pkt_dev->clone_skb = value; |
1078 | ||
1da177e4 LT |
1079 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1080 | return count; | |
1081 | } | |
1082 | if (!strcmp(name, "count")) { | |
1083 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1084 | if (len < 0) |
222f1806 | 1085 | return len; |
63adc6fb | 1086 | |
1da177e4 LT |
1087 | i += len; |
1088 | pkt_dev->count = value; | |
1089 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1090 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1091 | return count; |
1092 | } | |
1093 | if (!strcmp(name, "src_mac_count")) { | |
1094 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1095 | if (len < 0) |
222f1806 | 1096 | return len; |
63adc6fb | 1097 | |
1da177e4 LT |
1098 | i += len; |
1099 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1100 | pkt_dev->src_mac_count = value; |
1101 | pkt_dev->cur_src_mac_offset = 0; | |
1102 | } | |
1103 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1104 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1105 | return count; |
1106 | } | |
1107 | if (!strcmp(name, "dst_mac_count")) { | |
1108 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1109 | if (len < 0) |
222f1806 | 1110 | return len; |
63adc6fb | 1111 | |
1da177e4 LT |
1112 | i += len; |
1113 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1114 | pkt_dev->dst_mac_count = value; |
1115 | pkt_dev->cur_dst_mac_offset = 0; | |
1116 | } | |
1117 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1118 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1119 | return count; |
1120 | } | |
e99b99b4 RO |
1121 | if (!strcmp(name, "node")) { |
1122 | len = num_arg(&user_buffer[i], 10, &value); | |
1123 | if (len < 0) | |
1124 | return len; | |
1125 | ||
1126 | i += len; | |
1127 | ||
1128 | if (node_possible(value)) { | |
1129 | pkt_dev->node = value; | |
1130 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
1131 | } | |
1132 | else | |
1133 | sprintf(pg_result, "ERROR: node not possible"); | |
1134 | return count; | |
1135 | } | |
1da177e4 | 1136 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1137 | char f[32]; |
1138 | memset(f, 0, 32); | |
1da177e4 | 1139 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1140 | if (len < 0) |
222f1806 | 1141 | return len; |
63adc6fb | 1142 | |
1da177e4 LT |
1143 | if (copy_from_user(f, &user_buffer[i], len)) |
1144 | return -EFAULT; | |
1145 | i += len; | |
222f1806 LC |
1146 | if (strcmp(f, "IPSRC_RND") == 0) |
1147 | pkt_dev->flags |= F_IPSRC_RND; | |
1148 | ||
1149 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1150 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1151 | ||
1152 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1153 | pkt_dev->flags |= F_TXSIZE_RND; | |
1154 | ||
1155 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1156 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1157 | ||
1158 | else if (strcmp(f, "IPDST_RND") == 0) | |
1159 | pkt_dev->flags |= F_IPDST_RND; | |
1160 | ||
1161 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1162 | pkt_dev->flags &= ~F_IPDST_RND; | |
1163 | ||
1164 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1165 | pkt_dev->flags |= F_UDPSRC_RND; | |
1166 | ||
1167 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1168 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1169 | ||
1170 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1171 | pkt_dev->flags |= F_UDPDST_RND; | |
1172 | ||
1173 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1174 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1175 | ||
1176 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1177 | pkt_dev->flags |= F_MACSRC_RND; | |
1178 | ||
1179 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1180 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1181 | ||
1182 | else if (strcmp(f, "MACDST_RND") == 0) | |
1183 | pkt_dev->flags |= F_MACDST_RND; | |
1184 | ||
1185 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1186 | pkt_dev->flags &= ~F_MACDST_RND; | |
1187 | ||
ca6549af SW |
1188 | else if (strcmp(f, "MPLS_RND") == 0) |
1189 | pkt_dev->flags |= F_MPLS_RND; | |
1190 | ||
1191 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1192 | pkt_dev->flags &= ~F_MPLS_RND; | |
1193 | ||
34954ddc FF |
1194 | else if (strcmp(f, "VID_RND") == 0) |
1195 | pkt_dev->flags |= F_VID_RND; | |
1196 | ||
1197 | else if (strcmp(f, "!VID_RND") == 0) | |
1198 | pkt_dev->flags &= ~F_VID_RND; | |
1199 | ||
1200 | else if (strcmp(f, "SVID_RND") == 0) | |
1201 | pkt_dev->flags |= F_SVID_RND; | |
1202 | ||
1203 | else if (strcmp(f, "!SVID_RND") == 0) | |
1204 | pkt_dev->flags &= ~F_SVID_RND; | |
1205 | ||
007a531b JHS |
1206 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1207 | pkt_dev->flags |= F_FLOW_SEQ; | |
1208 | ||
45b270f8 RO |
1209 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1210 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1211 | ||
1212 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1213 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1214 | |
1215 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1216 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1217 | ||
1218 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1219 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1220 | #ifdef CONFIG_XFRM |
1221 | else if (strcmp(f, "IPSEC") == 0) | |
1222 | pkt_dev->flags |= F_IPSEC_ON; | |
1223 | #endif | |
1224 | ||
1ca7768c FF |
1225 | else if (strcmp(f, "!IPV6") == 0) |
1226 | pkt_dev->flags &= ~F_IPV6; | |
1227 | ||
e99b99b4 RO |
1228 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1229 | pkt_dev->flags |= F_NODE; | |
1230 | ||
1231 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1232 | pkt_dev->flags &= ~F_NODE; | |
1233 | ||
222f1806 LC |
1234 | else { |
1235 | sprintf(pg_result, | |
1236 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1237 | f, | |
1ca7768c | 1238 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
e99b99b4 | 1239 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n"); |
222f1806 LC |
1240 | return count; |
1241 | } | |
1da177e4 LT |
1242 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1243 | return count; | |
1244 | } | |
1245 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1246 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1247 | if (len < 0) |
222f1806 | 1248 | return len; |
1da177e4 | 1249 | |
222f1806 | 1250 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1251 | return -EFAULT; |
222f1806 LC |
1252 | buf[len] = 0; |
1253 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1254 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1255 | strncpy(pkt_dev->dst_min, buf, len); | |
1256 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1257 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1258 | } | |
1259 | if (debug) | |
25a8b254 | 1260 | printk(KERN_DEBUG "pktgen: dst_min set to: %s\n", |
222f1806 LC |
1261 | pkt_dev->dst_min); |
1262 | i += len; | |
1da177e4 LT |
1263 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1264 | return count; | |
1265 | } | |
1266 | if (!strcmp(name, "dst_max")) { | |
1267 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1268 | if (len < 0) |
222f1806 | 1269 | return len; |
63adc6fb | 1270 | |
1da177e4 | 1271 | |
222f1806 | 1272 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1273 | return -EFAULT; |
1274 | ||
222f1806 LC |
1275 | buf[len] = 0; |
1276 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1277 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1278 | strncpy(pkt_dev->dst_max, buf, len); | |
1279 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1280 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1281 | } | |
1282 | if (debug) | |
25a8b254 | 1283 | printk(KERN_DEBUG "pktgen: dst_max set to: %s\n", |
222f1806 | 1284 | pkt_dev->dst_max); |
1da177e4 LT |
1285 | i += len; |
1286 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1287 | return count; | |
1288 | } | |
1289 | if (!strcmp(name, "dst6")) { | |
1290 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1291 | if (len < 0) |
1292 | return len; | |
1da177e4 LT |
1293 | |
1294 | pkt_dev->flags |= F_IPV6; | |
1295 | ||
222f1806 | 1296 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1297 | return -EFAULT; |
222f1806 | 1298 | buf[len] = 0; |
1da177e4 LT |
1299 | |
1300 | scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); | |
222f1806 | 1301 | fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr); |
1da177e4 LT |
1302 | |
1303 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr); | |
1304 | ||
222f1806 | 1305 | if (debug) |
25a8b254 | 1306 | printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf); |
1da177e4 | 1307 | |
222f1806 | 1308 | i += len; |
1da177e4 LT |
1309 | sprintf(pg_result, "OK: dst6=%s", buf); |
1310 | return count; | |
1311 | } | |
1312 | if (!strcmp(name, "dst6_min")) { | |
1313 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1314 | if (len < 0) |
1315 | return len; | |
1da177e4 LT |
1316 | |
1317 | pkt_dev->flags |= F_IPV6; | |
1318 | ||
222f1806 | 1319 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1320 | return -EFAULT; |
222f1806 | 1321 | buf[len] = 0; |
1da177e4 LT |
1322 | |
1323 | scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); | |
222f1806 | 1324 | fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); |
1da177e4 | 1325 | |
222f1806 LC |
1326 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, |
1327 | &pkt_dev->min_in6_daddr); | |
1328 | if (debug) | |
25a8b254 | 1329 | printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf); |
1da177e4 | 1330 | |
222f1806 | 1331 | i += len; |
1da177e4 LT |
1332 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1333 | return count; | |
1334 | } | |
1335 | if (!strcmp(name, "dst6_max")) { | |
1336 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1337 | if (len < 0) |
1338 | return len; | |
1da177e4 LT |
1339 | |
1340 | pkt_dev->flags |= F_IPV6; | |
1341 | ||
222f1806 | 1342 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1343 | return -EFAULT; |
222f1806 | 1344 | buf[len] = 0; |
1da177e4 LT |
1345 | |
1346 | scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); | |
222f1806 | 1347 | fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); |
1da177e4 | 1348 | |
222f1806 | 1349 | if (debug) |
25a8b254 | 1350 | printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf); |
1da177e4 | 1351 | |
222f1806 | 1352 | i += len; |
1da177e4 LT |
1353 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1354 | return count; | |
1355 | } | |
1356 | if (!strcmp(name, "src6")) { | |
1357 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1358 | if (len < 0) |
1359 | return len; | |
1da177e4 LT |
1360 | |
1361 | pkt_dev->flags |= F_IPV6; | |
1362 | ||
222f1806 | 1363 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1364 | return -EFAULT; |
222f1806 | 1365 | buf[len] = 0; |
1da177e4 LT |
1366 | |
1367 | scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); | |
222f1806 | 1368 | fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr); |
1da177e4 LT |
1369 | |
1370 | ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr); | |
1371 | ||
222f1806 | 1372 | if (debug) |
25a8b254 | 1373 | printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf); |
222f1806 LC |
1374 | |
1375 | i += len; | |
1da177e4 LT |
1376 | sprintf(pg_result, "OK: src6=%s", buf); |
1377 | return count; | |
1378 | } | |
1379 | if (!strcmp(name, "src_min")) { | |
1380 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1381 | if (len < 0) |
222f1806 | 1382 | return len; |
63adc6fb | 1383 | |
222f1806 | 1384 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1385 | return -EFAULT; |
222f1806 LC |
1386 | buf[len] = 0; |
1387 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1388 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1389 | strncpy(pkt_dev->src_min, buf, len); | |
1390 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1391 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1392 | } | |
1393 | if (debug) | |
25a8b254 | 1394 | printk(KERN_DEBUG "pktgen: src_min set to: %s\n", |
222f1806 | 1395 | pkt_dev->src_min); |
1da177e4 LT |
1396 | i += len; |
1397 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1398 | return count; | |
1399 | } | |
1400 | if (!strcmp(name, "src_max")) { | |
1401 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1402 | if (len < 0) |
222f1806 | 1403 | return len; |
63adc6fb | 1404 | |
222f1806 | 1405 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1406 | return -EFAULT; |
222f1806 LC |
1407 | buf[len] = 0; |
1408 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1409 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1410 | strncpy(pkt_dev->src_max, buf, len); | |
1411 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1412 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1413 | } | |
1414 | if (debug) | |
25a8b254 | 1415 | printk(KERN_DEBUG "pktgen: src_max set to: %s\n", |
222f1806 | 1416 | pkt_dev->src_max); |
1da177e4 LT |
1417 | i += len; |
1418 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1419 | return count; | |
1420 | } | |
1421 | if (!strcmp(name, "dst_mac")) { | |
1422 | char *v = valstr; | |
f404e9a6 | 1423 | unsigned char old_dmac[ETH_ALEN]; |
1da177e4 | 1424 | unsigned char *m = pkt_dev->dst_mac; |
f404e9a6 | 1425 | memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN); |
222f1806 | 1426 | |
1da177e4 | 1427 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1428 | if (len < 0) |
222f1806 | 1429 | return len; |
63adc6fb | 1430 | |
1da177e4 | 1431 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1432 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1433 | return -EFAULT; |
1434 | i += len; | |
1435 | ||
222f1806 | 1436 | for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) { |
1da177e4 LT |
1437 | if (*v >= '0' && *v <= '9') { |
1438 | *m *= 16; | |
1439 | *m += *v - '0'; | |
1440 | } | |
1441 | if (*v >= 'A' && *v <= 'F') { | |
1442 | *m *= 16; | |
1443 | *m += *v - 'A' + 10; | |
1444 | } | |
1445 | if (*v >= 'a' && *v <= 'f') { | |
1446 | *m *= 16; | |
1447 | *m += *v - 'a' + 10; | |
1448 | } | |
1449 | if (*v == ':') { | |
1450 | m++; | |
1451 | *m = 0; | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | /* Set up Dest MAC */ | |
f404e9a6 KK |
1456 | if (compare_ether_addr(old_dmac, pkt_dev->dst_mac)) |
1457 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); | |
222f1806 | 1458 | |
1da177e4 LT |
1459 | sprintf(pg_result, "OK: dstmac"); |
1460 | return count; | |
1461 | } | |
1462 | if (!strcmp(name, "src_mac")) { | |
1463 | char *v = valstr; | |
ce5d0b47 | 1464 | unsigned char old_smac[ETH_ALEN]; |
1da177e4 LT |
1465 | unsigned char *m = pkt_dev->src_mac; |
1466 | ||
ce5d0b47 AR |
1467 | memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN); |
1468 | ||
1da177e4 | 1469 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1470 | if (len < 0) |
222f1806 | 1471 | return len; |
63adc6fb | 1472 | |
1da177e4 | 1473 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1474 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 LT |
1475 | return -EFAULT; |
1476 | i += len; | |
1477 | ||
222f1806 | 1478 | for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) { |
1da177e4 LT |
1479 | if (*v >= '0' && *v <= '9') { |
1480 | *m *= 16; | |
1481 | *m += *v - '0'; | |
1482 | } | |
1483 | if (*v >= 'A' && *v <= 'F') { | |
1484 | *m *= 16; | |
1485 | *m += *v - 'A' + 10; | |
1486 | } | |
1487 | if (*v >= 'a' && *v <= 'f') { | |
1488 | *m *= 16; | |
1489 | *m += *v - 'a' + 10; | |
1490 | } | |
1491 | if (*v == ':') { | |
1492 | m++; | |
1493 | *m = 0; | |
1494 | } | |
222f1806 | 1495 | } |
1da177e4 | 1496 | |
ce5d0b47 AR |
1497 | /* Set up Src MAC */ |
1498 | if (compare_ether_addr(old_smac, pkt_dev->src_mac)) | |
1499 | memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN); | |
1500 | ||
222f1806 | 1501 | sprintf(pg_result, "OK: srcmac"); |
1da177e4 LT |
1502 | return count; |
1503 | } | |
1504 | ||
222f1806 LC |
1505 | if (!strcmp(name, "clear_counters")) { |
1506 | pktgen_clear_counters(pkt_dev); | |
1507 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1508 | return count; | |
1509 | } | |
1da177e4 LT |
1510 | |
1511 | if (!strcmp(name, "flows")) { | |
1512 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1513 | if (len < 0) |
222f1806 | 1514 | return len; |
63adc6fb | 1515 | |
1da177e4 LT |
1516 | i += len; |
1517 | if (value > MAX_CFLOWS) | |
1518 | value = MAX_CFLOWS; | |
1519 | ||
1520 | pkt_dev->cflows = value; | |
1521 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1522 | return count; | |
1523 | } | |
1524 | ||
1525 | if (!strcmp(name, "flowlen")) { | |
1526 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1527 | if (len < 0) |
222f1806 | 1528 | return len; |
63adc6fb | 1529 | |
1da177e4 LT |
1530 | i += len; |
1531 | pkt_dev->lflow = value; | |
1532 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1533 | return count; | |
1534 | } | |
222f1806 | 1535 | |
45b270f8 RO |
1536 | if (!strcmp(name, "queue_map_min")) { |
1537 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1538 | if (len < 0) |
45b270f8 | 1539 | return len; |
63adc6fb | 1540 | |
45b270f8 RO |
1541 | i += len; |
1542 | pkt_dev->queue_map_min = value; | |
1543 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1544 | return count; | |
1545 | } | |
1546 | ||
1547 | if (!strcmp(name, "queue_map_max")) { | |
1548 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1549 | if (len < 0) |
45b270f8 | 1550 | return len; |
63adc6fb | 1551 | |
45b270f8 RO |
1552 | i += len; |
1553 | pkt_dev->queue_map_max = value; | |
1554 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1555 | return count; | |
1556 | } | |
1557 | ||
ca6549af | 1558 | if (!strcmp(name, "mpls")) { |
cfcabdcc SH |
1559 | unsigned n, cnt; |
1560 | ||
ca6549af | 1561 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1562 | if (len < 0) |
1563 | return len; | |
ca6549af | 1564 | i += len; |
cfcabdcc | 1565 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1566 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1567 | cnt += sprintf(pg_result + cnt, |
1568 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1569 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1570 | |
1571 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1572 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1573 | pkt_dev->svlan_id = 0xffff; | |
1574 | ||
1575 | if (debug) | |
25a8b254 | 1576 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1577 | } |
1578 | return count; | |
1579 | } | |
1580 | ||
1581 | if (!strcmp(name, "vlan_id")) { | |
1582 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1583 | if (len < 0) |
34954ddc | 1584 | return len; |
63adc6fb | 1585 | |
34954ddc FF |
1586 | i += len; |
1587 | if (value <= 4095) { | |
1588 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1589 | ||
1590 | if (debug) | |
25a8b254 | 1591 | printk(KERN_DEBUG "pktgen: VLAN turned on\n"); |
34954ddc FF |
1592 | |
1593 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1594 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1595 | |
1596 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1597 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1598 | } else { | |
1599 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1600 | pkt_dev->svlan_id = 0xffff; | |
1601 | ||
1602 | if (debug) | |
25a8b254 | 1603 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1604 | } |
1605 | return count; | |
1606 | } | |
1607 | ||
1608 | if (!strcmp(name, "vlan_p")) { | |
1609 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1610 | if (len < 0) |
34954ddc | 1611 | return len; |
63adc6fb | 1612 | |
34954ddc FF |
1613 | i += len; |
1614 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1615 | pkt_dev->vlan_p = value; | |
1616 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1617 | } else { | |
1618 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1619 | } | |
1620 | return count; | |
1621 | } | |
1622 | ||
1623 | if (!strcmp(name, "vlan_cfi")) { | |
1624 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1625 | if (len < 0) |
34954ddc | 1626 | return len; |
63adc6fb | 1627 | |
34954ddc FF |
1628 | i += len; |
1629 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1630 | pkt_dev->vlan_cfi = value; | |
1631 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1632 | } else { | |
1633 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1634 | } | |
1635 | return count; | |
1636 | } | |
1637 | ||
1638 | if (!strcmp(name, "svlan_id")) { | |
1639 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1640 | if (len < 0) |
34954ddc | 1641 | return len; |
63adc6fb | 1642 | |
34954ddc FF |
1643 | i += len; |
1644 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1645 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1646 | ||
1647 | if (debug) | |
25a8b254 | 1648 | printk(KERN_DEBUG "pktgen: SVLAN turned on\n"); |
34954ddc FF |
1649 | |
1650 | if (debug && pkt_dev->nr_labels) | |
25a8b254 | 1651 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); |
34954ddc FF |
1652 | |
1653 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1654 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1655 | } else { | |
1656 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1657 | pkt_dev->svlan_id = 0xffff; | |
1658 | ||
1659 | if (debug) | |
25a8b254 | 1660 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); |
34954ddc FF |
1661 | } |
1662 | return count; | |
1663 | } | |
1664 | ||
1665 | if (!strcmp(name, "svlan_p")) { | |
1666 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1667 | if (len < 0) |
34954ddc | 1668 | return len; |
63adc6fb | 1669 | |
34954ddc FF |
1670 | i += len; |
1671 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1672 | pkt_dev->svlan_p = value; | |
1673 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1674 | } else { | |
1675 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1676 | } | |
1677 | return count; | |
1678 | } | |
1679 | ||
1680 | if (!strcmp(name, "svlan_cfi")) { | |
1681 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1682 | if (len < 0) |
34954ddc | 1683 | return len; |
63adc6fb | 1684 | |
34954ddc FF |
1685 | i += len; |
1686 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1687 | pkt_dev->svlan_cfi = value; | |
1688 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1689 | } else { | |
1690 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1691 | } | |
ca6549af SW |
1692 | return count; |
1693 | } | |
1694 | ||
1ca7768c FF |
1695 | if (!strcmp(name, "tos")) { |
1696 | __u32 tmp_value = 0; | |
1697 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1698 | if (len < 0) |
1ca7768c | 1699 | return len; |
63adc6fb | 1700 | |
1ca7768c FF |
1701 | i += len; |
1702 | if (len == 2) { | |
1703 | pkt_dev->tos = tmp_value; | |
1704 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1705 | } else { | |
1706 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1707 | } | |
1708 | return count; | |
1709 | } | |
1710 | ||
1711 | if (!strcmp(name, "traffic_class")) { | |
1712 | __u32 tmp_value = 0; | |
1713 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1714 | if (len < 0) |
1ca7768c | 1715 | return len; |
63adc6fb | 1716 | |
1ca7768c FF |
1717 | i += len; |
1718 | if (len == 2) { | |
1719 | pkt_dev->traffic_class = tmp_value; | |
1720 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1721 | } else { | |
1722 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1723 | } | |
1724 | return count; | |
1725 | } | |
1726 | ||
1da177e4 LT |
1727 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1728 | return -EINVAL; | |
1729 | } | |
1730 | ||
d50a6b56 | 1731 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1732 | { |
d50a6b56 SH |
1733 | return single_open(file, pktgen_if_show, PDE(inode)->data); |
1734 | } | |
1da177e4 | 1735 | |
9a32144e | 1736 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1737 | .owner = THIS_MODULE, |
1738 | .open = pktgen_if_open, | |
1739 | .read = seq_read, | |
1740 | .llseek = seq_lseek, | |
1741 | .write = pktgen_if_write, | |
1742 | .release = single_release, | |
d50a6b56 | 1743 | }; |
1da177e4 | 1744 | |
d50a6b56 SH |
1745 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1746 | { | |
222f1806 | 1747 | struct pktgen_thread *t = seq->private; |
648fda74 | 1748 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1749 | |
1750 | BUG_ON(!t); | |
1da177e4 | 1751 | |
222f1806 | 1752 | seq_printf(seq, "Running: "); |
1da177e4 | 1753 | |
222f1806 | 1754 | if_lock(t); |
c26a8016 | 1755 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1756 | if (pkt_dev->running) |
593f63b0 | 1757 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1758 | |
222f1806 LC |
1759 | seq_printf(seq, "\nStopped: "); |
1760 | ||
c26a8016 | 1761 | list_for_each_entry(pkt_dev, &t->if_list, list) |
222f1806 | 1762 | if (!pkt_dev->running) |
593f63b0 | 1763 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1764 | |
1765 | if (t->result[0]) | |
d50a6b56 | 1766 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1767 | else |
d50a6b56 | 1768 | seq_printf(seq, "\nResult: NA\n"); |
1da177e4 | 1769 | |
222f1806 | 1770 | if_unlock(t); |
1da177e4 | 1771 | |
d50a6b56 | 1772 | return 0; |
1da177e4 LT |
1773 | } |
1774 | ||
d50a6b56 | 1775 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1776 | const char __user * user_buffer, |
1777 | size_t count, loff_t * offset) | |
1da177e4 | 1778 | { |
222f1806 LC |
1779 | struct seq_file *seq = (struct seq_file *)file->private_data; |
1780 | struct pktgen_thread *t = seq->private; | |
1da177e4 LT |
1781 | int i = 0, max, len, ret; |
1782 | char name[40]; | |
222f1806 | 1783 | char *pg_result; |
d50a6b56 | 1784 | |
1da177e4 | 1785 | if (count < 1) { |
222f1806 | 1786 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1787 | return -EINVAL; |
1788 | } | |
d50a6b56 | 1789 | |
1da177e4 | 1790 | max = count - i; |
222f1806 LC |
1791 | len = count_trail_chars(&user_buffer[i], max); |
1792 | if (len < 0) | |
d50a6b56 SH |
1793 | return len; |
1794 | ||
1da177e4 | 1795 | i += len; |
d50a6b56 | 1796 | |
1da177e4 LT |
1797 | /* Read variable name */ |
1798 | ||
1799 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1800 | if (len < 0) |
d50a6b56 | 1801 | return len; |
222f1806 | 1802 | |
1da177e4 LT |
1803 | memset(name, 0, sizeof(name)); |
1804 | if (copy_from_user(name, &user_buffer[i], len)) | |
1805 | return -EFAULT; | |
1806 | i += len; | |
d50a6b56 | 1807 | |
222f1806 | 1808 | max = count - i; |
1da177e4 | 1809 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1810 | if (len < 0) |
d50a6b56 SH |
1811 | return len; |
1812 | ||
1da177e4 LT |
1813 | i += len; |
1814 | ||
d50a6b56 | 1815 | if (debug) |
25a8b254 DM |
1816 | printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n", |
1817 | name, (unsigned long)count); | |
1da177e4 | 1818 | |
222f1806 | 1819 | if (!t) { |
f9467eae | 1820 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1821 | ret = -EINVAL; |
1822 | goto out; | |
1823 | } | |
1824 | ||
1825 | pg_result = &(t->result[0]); | |
1826 | ||
222f1806 LC |
1827 | if (!strcmp(name, "add_device")) { |
1828 | char f[32]; | |
1829 | memset(f, 0, 32); | |
1da177e4 | 1830 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1831 | if (len < 0) { |
1832 | ret = len; | |
1da177e4 LT |
1833 | goto out; |
1834 | } | |
222f1806 | 1835 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1836 | return -EFAULT; |
1837 | i += len; | |
6146e6a4 | 1838 | mutex_lock(&pktgen_thread_lock); |
222f1806 | 1839 | pktgen_add_device(t, f); |
6146e6a4 | 1840 | mutex_unlock(&pktgen_thread_lock); |
222f1806 LC |
1841 | ret = count; |
1842 | sprintf(pg_result, "OK: add_device=%s", f); | |
1da177e4 LT |
1843 | goto out; |
1844 | } | |
1845 | ||
222f1806 | 1846 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1847 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1848 | t->control |= T_REMDEVALL; |
6146e6a4 | 1849 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1850 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1851 | ret = count; |
222f1806 | 1852 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1853 | goto out; |
1854 | } | |
1855 | ||
222f1806 | 1856 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1857 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1858 | ret = count; |
1da177e4 LT |
1859 | goto out; |
1860 | } | |
1861 | ||
1862 | ret = -EINVAL; | |
222f1806 | 1863 | out: |
1da177e4 LT |
1864 | return ret; |
1865 | } | |
1866 | ||
d50a6b56 | 1867 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1868 | { |
d50a6b56 | 1869 | return single_open(file, pktgen_thread_show, PDE(inode)->data); |
1da177e4 LT |
1870 | } |
1871 | ||
9a32144e | 1872 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1873 | .owner = THIS_MODULE, |
1874 | .open = pktgen_thread_open, | |
1875 | .read = seq_read, | |
1876 | .llseek = seq_lseek, | |
1877 | .write = pktgen_thread_write, | |
1878 | .release = single_release, | |
d50a6b56 | 1879 | }; |
1da177e4 LT |
1880 | |
1881 | /* Think find or remove for NN */ | |
222f1806 | 1882 | static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove) |
1da177e4 LT |
1883 | { |
1884 | struct pktgen_thread *t; | |
1885 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1886 | bool exact = (remove == FIND); |
1da177e4 | 1887 | |
cdcdbe0b | 1888 | list_for_each_entry(t, &pktgen_threads, th_list) { |
3e984840 | 1889 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1890 | if (pkt_dev) { |
222f1806 LC |
1891 | if (remove) { |
1892 | if_lock(t); | |
1893 | pkt_dev->removal_mark = 1; | |
1894 | t->control |= T_REMDEV; | |
1895 | if_unlock(t); | |
1896 | } | |
1da177e4 LT |
1897 | break; |
1898 | } | |
1da177e4 | 1899 | } |
222f1806 | 1900 | return pkt_dev; |
1da177e4 LT |
1901 | } |
1902 | ||
95ed63f7 AK |
1903 | /* |
1904 | * mark a device for removal | |
1905 | */ | |
39df232f | 1906 | static void pktgen_mark_device(const char *ifname) |
1da177e4 LT |
1907 | { |
1908 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1909 | const int max_tries = 10, msec_per_try = 125; |
1910 | int i = 0; | |
95ed63f7 | 1911 | |
6146e6a4 | 1912 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1913 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1914 | |
222f1806 | 1915 | while (1) { |
95ed63f7 AK |
1916 | |
1917 | pkt_dev = __pktgen_NN_threads(ifname, REMOVE); | |
222f1806 LC |
1918 | if (pkt_dev == NULL) |
1919 | break; /* success */ | |
95ed63f7 | 1920 | |
6146e6a4 | 1921 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1922 | pr_debug("%s: waiting for %s to disappear....\n", |
1923 | __func__, ifname); | |
95ed63f7 | 1924 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1925 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1926 | |
1927 | if (++i >= max_tries) { | |
f9467eae JP |
1928 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1929 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1930 | break; |
1931 | } | |
1932 | ||
1933 | } | |
1934 | ||
6146e6a4 | 1935 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1936 | } |
95ed63f7 | 1937 | |
39df232f SH |
1938 | static void pktgen_change_name(struct net_device *dev) |
1939 | { | |
1940 | struct pktgen_thread *t; | |
1941 | ||
1942 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1943 | struct pktgen_dev *pkt_dev; | |
1944 | ||
1945 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
1946 | if (pkt_dev->odev != dev) | |
1947 | continue; | |
1948 | ||
1949 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1950 | ||
2975315b AD |
1951 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
1952 | pg_proc_dir, | |
1953 | &pktgen_if_fops, | |
1954 | pkt_dev); | |
39df232f | 1955 | if (!pkt_dev->entry) |
f9467eae JP |
1956 | pr_err("can't move proc entry for '%s'\n", |
1957 | dev->name); | |
39df232f SH |
1958 | break; |
1959 | } | |
1960 | } | |
1da177e4 LT |
1961 | } |
1962 | ||
222f1806 LC |
1963 | static int pktgen_device_event(struct notifier_block *unused, |
1964 | unsigned long event, void *ptr) | |
1da177e4 | 1965 | { |
39df232f | 1966 | struct net_device *dev = ptr; |
1da177e4 | 1967 | |
721499e8 | 1968 | if (!net_eq(dev_net(dev), &init_net)) |
e9dc8653 EB |
1969 | return NOTIFY_DONE; |
1970 | ||
1da177e4 LT |
1971 | /* It is OK that we do not hold the group lock right now, |
1972 | * as we run under the RTNL lock. | |
1973 | */ | |
1974 | ||
1975 | switch (event) { | |
39df232f SH |
1976 | case NETDEV_CHANGENAME: |
1977 | pktgen_change_name(dev); | |
1da177e4 | 1978 | break; |
222f1806 | 1979 | |
1da177e4 | 1980 | case NETDEV_UNREGISTER: |
222f1806 | 1981 | pktgen_mark_device(dev->name); |
1da177e4 | 1982 | break; |
3ff50b79 | 1983 | } |
1da177e4 LT |
1984 | |
1985 | return NOTIFY_DONE; | |
1986 | } | |
1987 | ||
63adc6fb SH |
1988 | static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, |
1989 | const char *ifname) | |
e6fce5b9 RO |
1990 | { |
1991 | char b[IFNAMSIZ+5]; | |
1992 | int i = 0; | |
1993 | ||
63adc6fb SH |
1994 | for (i = 0; ifname[i] != '@'; i++) { |
1995 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
1996 | break; |
1997 | ||
1998 | b[i] = ifname[i]; | |
1999 | } | |
2000 | b[i] = 0; | |
2001 | ||
2002 | return dev_get_by_name(&init_net, b); | |
2003 | } | |
2004 | ||
2005 | ||
1da177e4 LT |
2006 | /* Associate pktgen_dev with a device. */ |
2007 | ||
39df232f | 2008 | static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname) |
222f1806 | 2009 | { |
1da177e4 | 2010 | struct net_device *odev; |
39df232f | 2011 | int err; |
1da177e4 LT |
2012 | |
2013 | /* Clean old setups */ | |
1da177e4 LT |
2014 | if (pkt_dev->odev) { |
2015 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2016 | pkt_dev->odev = NULL; |
2017 | } | |
1da177e4 | 2018 | |
e6fce5b9 | 2019 | odev = pktgen_dev_get_by_name(pkt_dev, ifname); |
1da177e4 | 2020 | if (!odev) { |
f9467eae | 2021 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2022 | return -ENODEV; |
1da177e4 | 2023 | } |
39df232f | 2024 | |
1da177e4 | 2025 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2026 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2027 | err = -EINVAL; |
2028 | } else if (!netif_running(odev)) { | |
f9467eae | 2029 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2030 | err = -ENETDOWN; |
2031 | } else { | |
2032 | pkt_dev->odev = odev; | |
2033 | return 0; | |
1da177e4 | 2034 | } |
1da177e4 | 2035 | |
1da177e4 | 2036 | dev_put(odev); |
39df232f | 2037 | return err; |
1da177e4 LT |
2038 | } |
2039 | ||
2040 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2041 | * structure to have the right information to create/send packets | |
2042 | */ | |
2043 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2044 | { | |
64c00d81 AG |
2045 | int ntxq; |
2046 | ||
222f1806 | 2047 | if (!pkt_dev->odev) { |
f9467eae | 2048 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2049 | sprintf(pkt_dev->result, |
2050 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2051 | return; | |
2052 | } | |
2053 | ||
64c00d81 AG |
2054 | /* make sure that we don't pick a non-existing transmit queue */ |
2055 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2056 | |
64c00d81 | 2057 | if (ntxq <= pkt_dev->queue_map_min) { |
f9467eae JP |
2058 | pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2059 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2060 | pkt_dev->odevname); | |
64c00d81 AG |
2061 | pkt_dev->queue_map_min = ntxq - 1; |
2062 | } | |
88271660 | 2063 | if (pkt_dev->queue_map_max >= ntxq) { |
f9467eae JP |
2064 | pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2065 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2066 | pkt_dev->odevname); | |
64c00d81 AG |
2067 | pkt_dev->queue_map_max = ntxq - 1; |
2068 | } | |
2069 | ||
222f1806 | 2070 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2071 | |
f404e9a6 | 2072 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
222f1806 | 2073 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); |
1da177e4 | 2074 | |
222f1806 | 2075 | /* Set up Dest MAC */ |
f404e9a6 | 2076 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); |
1da177e4 | 2077 | |
222f1806 LC |
2078 | /* Set up pkt size */ |
2079 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; | |
2080 | ||
2081 | if (pkt_dev->flags & F_IPV6) { | |
1da177e4 | 2082 | /* |
4ec93edb | 2083 | * Skip this automatic address setting until locks or functions |
1da177e4 LT |
2084 | * gets exported |
2085 | */ | |
2086 | ||
2087 | #ifdef NOTNOW | |
222f1806 | 2088 | int i, set = 0, err = 1; |
1da177e4 LT |
2089 | struct inet6_dev *idev; |
2090 | ||
222f1806 LC |
2091 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2092 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2093 | set = 1; |
2094 | break; | |
2095 | } | |
2096 | ||
222f1806 LC |
2097 | if (!set) { |
2098 | ||
1da177e4 LT |
2099 | /* |
2100 | * Use linklevel address if unconfigured. | |
2101 | * | |
2102 | * use ipv6_get_lladdr if/when it's get exported | |
2103 | */ | |
2104 | ||
8814c4b5 | 2105 | rcu_read_lock(); |
63adc6fb SH |
2106 | idev = __in6_dev_get(pkt_dev->odev); |
2107 | if (idev) { | |
1da177e4 LT |
2108 | struct inet6_ifaddr *ifp; |
2109 | ||
2110 | read_lock_bh(&idev->lock); | |
222f1806 LC |
2111 | for (ifp = idev->addr_list; ifp; |
2112 | ifp = ifp->if_next) { | |
f64f9e71 JP |
2113 | if (ifp->scope == IFA_LINK && |
2114 | !(ifp->flags & IFA_F_TENTATIVE)) { | |
222f1806 LC |
2115 | ipv6_addr_copy(&pkt_dev-> |
2116 | cur_in6_saddr, | |
2117 | &ifp->addr); | |
1da177e4 LT |
2118 | err = 0; |
2119 | break; | |
2120 | } | |
2121 | } | |
2122 | read_unlock_bh(&idev->lock); | |
2123 | } | |
8814c4b5 | 2124 | rcu_read_unlock(); |
222f1806 | 2125 | if (err) |
f9467eae | 2126 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 LT |
2127 | } |
2128 | #endif | |
222f1806 | 2129 | } else { |
1da177e4 LT |
2130 | pkt_dev->saddr_min = 0; |
2131 | pkt_dev->saddr_max = 0; | |
2132 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2133 | |
2134 | struct in_device *in_dev; | |
1da177e4 LT |
2135 | |
2136 | rcu_read_lock(); | |
e5ed6399 | 2137 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2138 | if (in_dev) { |
2139 | if (in_dev->ifa_list) { | |
222f1806 LC |
2140 | pkt_dev->saddr_min = |
2141 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2142 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2143 | } | |
1da177e4 LT |
2144 | } |
2145 | rcu_read_unlock(); | |
222f1806 | 2146 | } else { |
1da177e4 LT |
2147 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2148 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2149 | } | |
2150 | ||
2151 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2152 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2153 | } | |
222f1806 LC |
2154 | /* Initialize current values. */ |
2155 | pkt_dev->cur_dst_mac_offset = 0; | |
2156 | pkt_dev->cur_src_mac_offset = 0; | |
2157 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2158 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2159 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2160 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2161 | pkt_dev->nflows = 0; |
2162 | } | |
2163 | ||
fd29cf72 SH |
2164 | |
2165 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2166 | { | |
ef87979c | 2167 | ktime_t start_time, end_time; |
417bc4b8 | 2168 | s64 remaining; |
2bc481cf SH |
2169 | struct hrtimer_sleeper t; |
2170 | ||
2171 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2172 | hrtimer_set_expires(&t.timer, spin_until); | |
2173 | ||
43d28b65 | 2174 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2175 | if (remaining <= 0) { |
2176 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2177 | return; |
417bc4b8 | 2178 | } |
2bc481cf | 2179 | |
ef87979c | 2180 | start_time = ktime_now(); |
43d28b65 DT |
2181 | if (remaining < 100000) |
2182 | ndelay(remaining); /* really small just spin */ | |
2bc481cf SH |
2183 | else { |
2184 | /* see do_nanosleep */ | |
2185 | hrtimer_init_sleeper(&t, current); | |
2186 | do { | |
2187 | set_current_state(TASK_INTERRUPTIBLE); | |
2188 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2189 | if (!hrtimer_active(&t.timer)) | |
2190 | t.task = NULL; | |
2191 | ||
2192 | if (likely(t.task)) | |
1da177e4 | 2193 | schedule(); |
1da177e4 | 2194 | |
2bc481cf SH |
2195 | hrtimer_cancel(&t.timer); |
2196 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2197 | __set_current_state(TASK_RUNNING); | |
1da177e4 | 2198 | } |
ef87979c SH |
2199 | end_time = ktime_now(); |
2200 | ||
2201 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2202 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2203 | } |
2204 | ||
16dab72f JHS |
2205 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2206 | { | |
a553e4a6 | 2207 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2208 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2209 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2210 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2211 | } | |
2212 | ||
648fda74 | 2213 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2214 | { |
648fda74 | 2215 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2216 | } |
2217 | ||
2218 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2219 | { | |
2220 | int flow = pkt_dev->curfl; | |
2221 | ||
2222 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2223 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2224 | /* reset time */ | |
2225 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2226 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2227 | pkt_dev->curfl += 1; |
2228 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2229 | pkt_dev->curfl = 0; /*reset */ | |
2230 | } | |
2231 | } else { | |
2232 | flow = random32() % pkt_dev->cflows; | |
1211a645 | 2233 | pkt_dev->curfl = flow; |
007a531b | 2234 | |
1211a645 | 2235 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2236 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2237 | pkt_dev->flows[flow].flags = 0; |
2238 | } | |
007a531b JHS |
2239 | } |
2240 | ||
2241 | return pkt_dev->curfl; | |
2242 | } | |
2243 | ||
a553e4a6 JHS |
2244 | |
2245 | #ifdef CONFIG_XFRM | |
2246 | /* If there was already an IPSEC SA, we keep it as is, else | |
2247 | * we go look for it ... | |
2248 | */ | |
bd55775c | 2249 | #define DUMMY_MARK 0 |
fea1ab0f | 2250 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2251 | { |
2252 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
2253 | if (!x) { | |
2254 | /*slow path: we dont already have xfrm_state*/ | |
bd55775c | 2255 | x = xfrm_stateonly_find(&init_net, DUMMY_MARK, |
5447c5e4 | 2256 | (xfrm_address_t *)&pkt_dev->cur_daddr, |
a553e4a6 JHS |
2257 | (xfrm_address_t *)&pkt_dev->cur_saddr, |
2258 | AF_INET, | |
2259 | pkt_dev->ipsmode, | |
2260 | pkt_dev->ipsproto, 0); | |
2261 | if (x) { | |
2262 | pkt_dev->flows[flow].x = x; | |
2263 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2264 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2265 | } |
2266 | ||
2267 | } | |
2268 | } | |
2269 | #endif | |
fd2ea0a7 DM |
2270 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2271 | { | |
e6fce5b9 RO |
2272 | |
2273 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2274 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2275 | ||
896a7cf8 | 2276 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2277 | __u16 t; |
2278 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
2279 | t = random32() % | |
2280 | (pkt_dev->queue_map_max - | |
2281 | pkt_dev->queue_map_min + 1) | |
2282 | + pkt_dev->queue_map_min; | |
2283 | } else { | |
2284 | t = pkt_dev->cur_queue_map + 1; | |
2285 | if (t > pkt_dev->queue_map_max) | |
2286 | t = pkt_dev->queue_map_min; | |
2287 | } | |
2288 | pkt_dev->cur_queue_map = t; | |
2289 | } | |
bfdbc0ac | 2290 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2291 | } |
2292 | ||
1da177e4 LT |
2293 | /* Increment/randomize headers according to flags and current values |
2294 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2295 | */ | |
222f1806 LC |
2296 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2297 | { | |
2298 | __u32 imn; | |
2299 | __u32 imx; | |
2300 | int flow = 0; | |
1da177e4 | 2301 | |
007a531b JHS |
2302 | if (pkt_dev->cflows) |
2303 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2304 | |
2305 | /* Deal with source MAC */ | |
222f1806 LC |
2306 | if (pkt_dev->src_mac_count > 1) { |
2307 | __u32 mc; | |
2308 | __u32 tmp; | |
2309 | ||
2310 | if (pkt_dev->flags & F_MACSRC_RND) | |
5fa6fc76 | 2311 | mc = random32() % pkt_dev->src_mac_count; |
222f1806 LC |
2312 | else { |
2313 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2314 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2315 | pkt_dev->src_mac_count) |
2316 | pkt_dev->cur_src_mac_offset = 0; | |
2317 | } | |
2318 | ||
2319 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2320 | pkt_dev->hh[11] = tmp; | |
2321 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2322 | pkt_dev->hh[10] = tmp; | |
2323 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2324 | pkt_dev->hh[9] = tmp; | |
2325 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2326 | pkt_dev->hh[8] = tmp; | |
2327 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2328 | pkt_dev->hh[7] = tmp; | |
2329 | } | |
2330 | ||
2331 | /* Deal with Destination MAC */ | |
2332 | if (pkt_dev->dst_mac_count > 1) { | |
2333 | __u32 mc; | |
2334 | __u32 tmp; | |
2335 | ||
2336 | if (pkt_dev->flags & F_MACDST_RND) | |
5fa6fc76 | 2337 | mc = random32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2338 | |
2339 | else { | |
2340 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2341 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2342 | pkt_dev->dst_mac_count) { |
2343 | pkt_dev->cur_dst_mac_offset = 0; | |
2344 | } | |
2345 | } | |
2346 | ||
2347 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2348 | pkt_dev->hh[5] = tmp; | |
2349 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2350 | pkt_dev->hh[4] = tmp; | |
2351 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2352 | pkt_dev->hh[3] = tmp; | |
2353 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2354 | pkt_dev->hh[2] = tmp; | |
2355 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2356 | pkt_dev->hh[1] = tmp; | |
2357 | } | |
2358 | ||
ca6549af SW |
2359 | if (pkt_dev->flags & F_MPLS_RND) { |
2360 | unsigned i; | |
e71a4783 | 2361 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2362 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2363 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
5fa6fc76 | 2364 | ((__force __be32)random32() & |
ca6549af SW |
2365 | htonl(0x000fffff)); |
2366 | } | |
2367 | ||
34954ddc | 2368 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
5fa6fc76 | 2369 | pkt_dev->vlan_id = random32() & (4096-1); |
34954ddc FF |
2370 | } |
2371 | ||
2372 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
5fa6fc76 | 2373 | pkt_dev->svlan_id = random32() & (4096 - 1); |
34954ddc FF |
2374 | } |
2375 | ||
222f1806 LC |
2376 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2377 | if (pkt_dev->flags & F_UDPSRC_RND) | |
5fa6fc76 SH |
2378 | pkt_dev->cur_udp_src = random32() % |
2379 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) | |
2380 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2381 | |
2382 | else { | |
1da177e4 LT |
2383 | pkt_dev->cur_udp_src++; |
2384 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2385 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2386 | } |
2387 | } | |
2388 | ||
2389 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2390 | if (pkt_dev->flags & F_UDPDST_RND) { | |
5fa6fc76 SH |
2391 | pkt_dev->cur_udp_dst = random32() % |
2392 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) | |
2393 | + pkt_dev->udp_dst_min; | |
222f1806 | 2394 | } else { |
1da177e4 | 2395 | pkt_dev->cur_udp_dst++; |
222f1806 | 2396 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2397 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2398 | } |
2399 | } | |
1da177e4 LT |
2400 | |
2401 | if (!(pkt_dev->flags & F_IPV6)) { | |
2402 | ||
63adc6fb SH |
2403 | imn = ntohl(pkt_dev->saddr_min); |
2404 | imx = ntohl(pkt_dev->saddr_max); | |
2405 | if (imn < imx) { | |
1da177e4 | 2406 | __u32 t; |
222f1806 | 2407 | if (pkt_dev->flags & F_IPSRC_RND) |
5fa6fc76 | 2408 | t = random32() % (imx - imn) + imn; |
1da177e4 LT |
2409 | else { |
2410 | t = ntohl(pkt_dev->cur_saddr); | |
2411 | t++; | |
63adc6fb | 2412 | if (t > imx) |
1da177e4 | 2413 | t = imn; |
63adc6fb | 2414 | |
1da177e4 LT |
2415 | } |
2416 | pkt_dev->cur_saddr = htonl(t); | |
2417 | } | |
222f1806 | 2418 | |
007a531b | 2419 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2420 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2421 | } else { | |
252e3346 AV |
2422 | imn = ntohl(pkt_dev->daddr_min); |
2423 | imx = ntohl(pkt_dev->daddr_max); | |
2424 | if (imn < imx) { | |
1da177e4 | 2425 | __u32 t; |
252e3346 | 2426 | __be32 s; |
1da177e4 LT |
2427 | if (pkt_dev->flags & F_IPDST_RND) { |
2428 | ||
5fa6fc76 | 2429 | t = random32() % (imx - imn) + imn; |
252e3346 | 2430 | s = htonl(t); |
1da177e4 | 2431 | |
21cf2253 JP |
2432 | while (ipv4_is_loopback(s) || |
2433 | ipv4_is_multicast(s) || | |
1e637c74 | 2434 | ipv4_is_lbcast(s) || |
21cf2253 JP |
2435 | ipv4_is_zeronet(s) || |
2436 | ipv4_is_local_multicast(s)) { | |
5fa6fc76 | 2437 | t = random32() % (imx - imn) + imn; |
252e3346 | 2438 | s = htonl(t); |
1da177e4 | 2439 | } |
252e3346 AV |
2440 | pkt_dev->cur_daddr = s; |
2441 | } else { | |
1da177e4 LT |
2442 | t = ntohl(pkt_dev->cur_daddr); |
2443 | t++; | |
2444 | if (t > imx) { | |
2445 | t = imn; | |
2446 | } | |
2447 | pkt_dev->cur_daddr = htonl(t); | |
2448 | } | |
2449 | } | |
222f1806 | 2450 | if (pkt_dev->cflows) { |
007a531b | 2451 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2452 | pkt_dev->flows[flow].cur_daddr = |
2453 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2454 | #ifdef CONFIG_XFRM |
2455 | if (pkt_dev->flags & F_IPSEC_ON) | |
2456 | get_ipsec_sa(pkt_dev, flow); | |
2457 | #endif | |
1da177e4 LT |
2458 | pkt_dev->nflows++; |
2459 | } | |
2460 | } | |
222f1806 LC |
2461 | } else { /* IPV6 * */ |
2462 | ||
2463 | if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 && | |
2464 | pkt_dev->min_in6_daddr.s6_addr32[1] == 0 && | |
2465 | pkt_dev->min_in6_daddr.s6_addr32[2] == 0 && | |
2466 | pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ; | |
1da177e4 LT |
2467 | else { |
2468 | int i; | |
2469 | ||
2470 | /* Only random destinations yet */ | |
2471 | ||
222f1806 | 2472 | for (i = 0; i < 4; i++) { |
1da177e4 | 2473 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
5fa6fc76 | 2474 | (((__force __be32)random32() | |
222f1806 LC |
2475 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2476 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2477 | } |
222f1806 | 2478 | } |
1da177e4 LT |
2479 | } |
2480 | ||
222f1806 LC |
2481 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2482 | __u32 t; | |
2483 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
5fa6fc76 SH |
2484 | t = random32() % |
2485 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) | |
2486 | + pkt_dev->min_pkt_size; | |
222f1806 | 2487 | } else { |
1da177e4 | 2488 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2489 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2490 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2491 | } |
2492 | pkt_dev->cur_pkt_size = t; | |
2493 | } | |
1da177e4 | 2494 | |
fd2ea0a7 | 2495 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2496 | |
1da177e4 LT |
2497 | pkt_dev->flows[flow].count++; |
2498 | } | |
2499 | ||
a553e4a6 JHS |
2500 | |
2501 | #ifdef CONFIG_XFRM | |
2502 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) | |
2503 | { | |
2504 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2505 | int err = 0; | |
2506 | struct iphdr *iph; | |
2507 | ||
2508 | if (!x) | |
2509 | return 0; | |
2510 | /* XXX: we dont support tunnel mode for now until | |
2511 | * we resolve the dst issue */ | |
2512 | if (x->props.mode != XFRM_MODE_TRANSPORT) | |
2513 | return 0; | |
2514 | ||
2515 | spin_lock(&x->lock); | |
2516 | iph = ip_hdr(skb); | |
2517 | ||
13996378 | 2518 | err = x->outer_mode->output(x, skb); |
a553e4a6 JHS |
2519 | if (err) |
2520 | goto error; | |
2521 | err = x->type->output(x, skb); | |
2522 | if (err) | |
2523 | goto error; | |
2524 | ||
63adc6fb | 2525 | x->curlft.bytes += skb->len; |
a553e4a6 | 2526 | x->curlft.packets++; |
a553e4a6 JHS |
2527 | error: |
2528 | spin_unlock(&x->lock); | |
2529 | return err; | |
2530 | } | |
2531 | ||
475ac1e4 | 2532 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2533 | { |
2534 | if (pkt_dev->cflows) { | |
2535 | /* let go of the SAs if we have them */ | |
2536 | int i = 0; | |
5b5f792a | 2537 | for (; i < pkt_dev->cflows; i++) { |
a553e4a6 JHS |
2538 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2539 | if (x) { | |
2540 | xfrm_state_put(x); | |
2541 | pkt_dev->flows[i].x = NULL; | |
2542 | } | |
2543 | } | |
2544 | } | |
2545 | } | |
2546 | ||
475ac1e4 | 2547 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2548 | struct sk_buff *skb, __be16 protocol) |
2549 | { | |
2550 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2551 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2552 | int nhead = 0; | |
2553 | if (x) { | |
2554 | int ret; | |
2555 | __u8 *eth; | |
2556 | nhead = x->props.header_len - skb_headroom(skb); | |
63adc6fb | 2557 | if (nhead > 0) { |
a553e4a6 JHS |
2558 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2559 | if (ret < 0) { | |
f9467eae JP |
2560 | pr_err("Error expanding ipsec packet %d\n", |
2561 | ret); | |
b4bb4ac8 | 2562 | goto err; |
a553e4a6 JHS |
2563 | } |
2564 | } | |
2565 | ||
2566 | /* ipsec is not expecting ll header */ | |
2567 | skb_pull(skb, ETH_HLEN); | |
2568 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2569 | if (ret) { | |
f9467eae | 2570 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2571 | goto err; |
a553e4a6 JHS |
2572 | } |
2573 | /* restore ll */ | |
2574 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2575 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2576 | *(u16 *) ð[12] = protocol; |
a553e4a6 JHS |
2577 | } |
2578 | } | |
2579 | return 1; | |
b4bb4ac8 IJ |
2580 | err: |
2581 | kfree_skb(skb); | |
2582 | return 0; | |
a553e4a6 JHS |
2583 | } |
2584 | #endif | |
2585 | ||
ca6549af SW |
2586 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2587 | { | |
2588 | unsigned i; | |
63adc6fb | 2589 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2590 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2591 | |
ca6549af SW |
2592 | mpls--; |
2593 | *mpls |= MPLS_STACK_BOTTOM; | |
2594 | } | |
2595 | ||
0f37c605 AV |
2596 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2597 | unsigned int prio) | |
2598 | { | |
2599 | return htons(id | (cfi << 12) | (prio << 13)); | |
2600 | } | |
2601 | ||
222f1806 LC |
2602 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2603 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2604 | { |
2605 | struct sk_buff *skb = NULL; | |
2606 | __u8 *eth; | |
2607 | struct udphdr *udph; | |
2608 | int datalen, iplen; | |
2609 | struct iphdr *iph; | |
222f1806 | 2610 | struct pktgen_hdr *pgh = NULL; |
d5f1ce9a | 2611 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2612 | __be32 *mpls; |
34954ddc FF |
2613 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2614 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2615 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2616 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2617 | u16 queue_map; |
ca6549af SW |
2618 | |
2619 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2620 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2621 | |
34954ddc | 2622 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2623 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2624 | |
64053bee RO |
2625 | /* Update any of the values, used when we're incrementing various |
2626 | * fields. | |
2627 | */ | |
fd2ea0a7 | 2628 | queue_map = pkt_dev->cur_queue_map; |
64053bee RO |
2629 | mod_cur_headers(pkt_dev); |
2630 | ||
7ac5459e | 2631 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 RO |
2632 | |
2633 | if (pkt_dev->flags & F_NODE) { | |
2634 | int node; | |
2635 | ||
2636 | if (pkt_dev->node >= 0) | |
2637 | node = pkt_dev->node; | |
2638 | else | |
2639 | node = numa_node_id(); | |
2640 | ||
2641 | skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64 | |
2642 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node); | |
2643 | if (likely(skb)) { | |
2644 | skb_reserve(skb, NET_SKB_PAD); | |
2645 | skb->dev = odev; | |
2646 | } | |
2647 | } | |
2648 | else | |
2649 | skb = __netdev_alloc_skb(odev, | |
2650 | pkt_dev->cur_pkt_size + 64 | |
2651 | + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
2652 | ||
1da177e4 LT |
2653 | if (!skb) { |
2654 | sprintf(pkt_dev->result, "No memory"); | |
2655 | return NULL; | |
2656 | } | |
2657 | ||
7ac5459e | 2658 | skb_reserve(skb, datalen); |
1da177e4 LT |
2659 | |
2660 | /* Reserve for ethernet and IP header */ | |
2661 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2662 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2663 | if (pkt_dev->nr_labels) | |
2664 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2665 | |
2666 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2667 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2668 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2669 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2670 | pkt_dev->svlan_cfi, | |
2671 | pkt_dev->svlan_p); | |
34954ddc | 2672 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2673 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2674 | } |
2675 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2676 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2677 | pkt_dev->vlan_cfi, | |
2678 | pkt_dev->vlan_p); | |
34954ddc | 2679 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2680 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2681 | } |
2682 | ||
27a884dc | 2683 | skb->network_header = skb->tail; |
b0e380b1 | 2684 | skb->transport_header = skb->network_header + sizeof(struct iphdr); |
ddc7b8e3 | 2685 | skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 2686 | skb_set_queue_mapping(skb, queue_map); |
ddc7b8e3 ACM |
2687 | iph = ip_hdr(skb); |
2688 | udph = udp_hdr(skb); | |
1da177e4 | 2689 | |
1da177e4 | 2690 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2691 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2692 | |
ca6549af SW |
2693 | /* Eth + IPh + UDPh + mpls */ |
2694 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2695 | pkt_dev->pkt_overhead; |
222f1806 | 2696 | if (datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2697 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2698 | |
1da177e4 LT |
2699 | udph->source = htons(pkt_dev->cur_udp_src); |
2700 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
2701 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
2702 | udph->check = 0; /* No checksum */ | |
1da177e4 LT |
2703 | |
2704 | iph->ihl = 5; | |
2705 | iph->version = 4; | |
2706 | iph->ttl = 32; | |
1ca7768c | 2707 | iph->tos = pkt_dev->tos; |
222f1806 | 2708 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2709 | iph->saddr = pkt_dev->cur_saddr; |
2710 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2711 | iph->id = htons(pkt_dev->ip_id); |
2712 | pkt_dev->ip_id++; | |
1da177e4 LT |
2713 | iph->frag_off = 0; |
2714 | iplen = 20 + 8 + datalen; | |
2715 | iph->tot_len = htons(iplen); | |
2716 | iph->check = 0; | |
222f1806 | 2717 | iph->check = ip_fast_csum((void *)iph, iph->ihl); |
ca6549af | 2718 | skb->protocol = protocol; |
b0e380b1 | 2719 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 2720 | pkt_dev->pkt_overhead); |
1da177e4 LT |
2721 | skb->dev = odev; |
2722 | skb->pkt_type = PACKET_HOST; | |
2723 | ||
66ed1e5e | 2724 | if (pkt_dev->nfrags <= 0) { |
222f1806 | 2725 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); |
66ed1e5e ED |
2726 | memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr)); |
2727 | } else { | |
1da177e4 | 2728 | int frags = pkt_dev->nfrags; |
66ed1e5e | 2729 | int i, len; |
1da177e4 | 2730 | |
222f1806 LC |
2731 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); |
2732 | ||
1da177e4 LT |
2733 | if (frags > MAX_SKB_FRAGS) |
2734 | frags = MAX_SKB_FRAGS; | |
222f1806 | 2735 | if (datalen > frags * PAGE_SIZE) { |
66ed1e5e ED |
2736 | len = datalen - frags * PAGE_SIZE; |
2737 | memset(skb_put(skb, len), 0, len); | |
222f1806 | 2738 | datalen = frags * PAGE_SIZE; |
1da177e4 LT |
2739 | } |
2740 | ||
2741 | i = 0; | |
2742 | while (datalen > 0) { | |
66ed1e5e | 2743 | struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0); |
1da177e4 LT |
2744 | skb_shinfo(skb)->frags[i].page = page; |
2745 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
2746 | skb_shinfo(skb)->frags[i].size = | |
222f1806 | 2747 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
1da177e4 LT |
2748 | datalen -= skb_shinfo(skb)->frags[i].size; |
2749 | skb->len += skb_shinfo(skb)->frags[i].size; | |
2750 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
2751 | i++; | |
2752 | skb_shinfo(skb)->nr_frags = i; | |
2753 | } | |
2754 | ||
2755 | while (i < frags) { | |
2756 | int rem; | |
2757 | ||
2758 | if (i == 0) | |
2759 | break; | |
2760 | ||
2761 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
2762 | if (rem == 0) | |
2763 | break; | |
2764 | ||
2765 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
2766 | ||
222f1806 LC |
2767 | skb_shinfo(skb)->frags[i] = |
2768 | skb_shinfo(skb)->frags[i - 1]; | |
1da177e4 | 2769 | get_page(skb_shinfo(skb)->frags[i].page); |
222f1806 LC |
2770 | skb_shinfo(skb)->frags[i].page = |
2771 | skb_shinfo(skb)->frags[i - 1].page; | |
2772 | skb_shinfo(skb)->frags[i].page_offset += | |
2773 | skb_shinfo(skb)->frags[i - 1].size; | |
1da177e4 LT |
2774 | skb_shinfo(skb)->frags[i].size = rem; |
2775 | i++; | |
2776 | skb_shinfo(skb)->nr_frags = i; | |
2777 | } | |
2778 | } | |
2779 | ||
63adc6fb SH |
2780 | /* Stamp the time, and sequence number, |
2781 | * convert them to network byte order | |
2782 | */ | |
222f1806 LC |
2783 | if (pgh) { |
2784 | struct timeval timestamp; | |
2785 | ||
2786 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2787 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2788 | ||
2789 | do_gettimeofday(×tamp); | |
2790 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2791 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2792 | } | |
1da177e4 | 2793 | |
a553e4a6 JHS |
2794 | #ifdef CONFIG_XFRM |
2795 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2796 | return NULL; | |
2797 | #endif | |
2798 | ||
1da177e4 LT |
2799 | return skb; |
2800 | } | |
2801 | ||
2802 | /* | |
4ec93edb | 2803 | * scan_ip6, fmt_ip taken from dietlibc-0.21 |
1da177e4 LT |
2804 | * Author Felix von Leitner <felix-dietlibc@fefe.de> |
2805 | * | |
4ec93edb | 2806 | * Slightly modified for kernel. |
1da177e4 LT |
2807 | * Should be candidate for net/ipv4/utils.c |
2808 | * --ro | |
2809 | */ | |
2810 | ||
222f1806 | 2811 | static unsigned int scan_ip6(const char *s, char ip[16]) |
1da177e4 LT |
2812 | { |
2813 | unsigned int i; | |
222f1806 | 2814 | unsigned int len = 0; |
1da177e4 LT |
2815 | unsigned long u; |
2816 | char suffix[16]; | |
222f1806 LC |
2817 | unsigned int prefixlen = 0; |
2818 | unsigned int suffixlen = 0; | |
252e3346 | 2819 | __be32 tmp; |
cfcabdcc | 2820 | char *pos; |
1da177e4 | 2821 | |
222f1806 LC |
2822 | for (i = 0; i < 16; i++) |
2823 | ip[i] = 0; | |
1da177e4 LT |
2824 | |
2825 | for (;;) { | |
2826 | if (*s == ':') { | |
2827 | len++; | |
222f1806 LC |
2828 | if (s[1] == ':') { /* Found "::", skip to part 2 */ |
2829 | s += 2; | |
1da177e4 LT |
2830 | len++; |
2831 | break; | |
2832 | } | |
2833 | s++; | |
2834 | } | |
1da177e4 | 2835 | |
cfcabdcc SH |
2836 | u = simple_strtoul(s, &pos, 16); |
2837 | i = pos - s; | |
222f1806 LC |
2838 | if (!i) |
2839 | return 0; | |
2840 | if (prefixlen == 12 && s[i] == '.') { | |
1da177e4 LT |
2841 | |
2842 | /* the last 4 bytes may be written as IPv4 address */ | |
2843 | ||
2844 | tmp = in_aton(s); | |
222f1806 LC |
2845 | memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp)); |
2846 | return i + len; | |
1da177e4 LT |
2847 | } |
2848 | ip[prefixlen++] = (u >> 8); | |
2849 | ip[prefixlen++] = (u & 255); | |
222f1806 LC |
2850 | s += i; |
2851 | len += i; | |
2852 | if (prefixlen == 16) | |
1da177e4 LT |
2853 | return len; |
2854 | } | |
2855 | ||
2856 | /* part 2, after "::" */ | |
2857 | for (;;) { | |
2858 | if (*s == ':') { | |
222f1806 | 2859 | if (suffixlen == 0) |
1da177e4 LT |
2860 | break; |
2861 | s++; | |
2862 | len++; | |
222f1806 | 2863 | } else if (suffixlen != 0) |
1da177e4 | 2864 | break; |
cfcabdcc SH |
2865 | |
2866 | u = simple_strtol(s, &pos, 16); | |
2867 | i = pos - s; | |
1da177e4 | 2868 | if (!i) { |
222f1806 LC |
2869 | if (*s) |
2870 | len--; | |
1da177e4 LT |
2871 | break; |
2872 | } | |
222f1806 | 2873 | if (suffixlen + prefixlen <= 12 && s[i] == '.') { |
1da177e4 | 2874 | tmp = in_aton(s); |
222f1806 LC |
2875 | memcpy((struct in_addr *)(suffix + suffixlen), &tmp, |
2876 | sizeof(tmp)); | |
2877 | suffixlen += 4; | |
2878 | len += strlen(s); | |
1da177e4 LT |
2879 | break; |
2880 | } | |
2881 | suffix[suffixlen++] = (u >> 8); | |
2882 | suffix[suffixlen++] = (u & 255); | |
222f1806 LC |
2883 | s += i; |
2884 | len += i; | |
2885 | if (prefixlen + suffixlen == 16) | |
1da177e4 LT |
2886 | break; |
2887 | } | |
222f1806 LC |
2888 | for (i = 0; i < suffixlen; i++) |
2889 | ip[16 - suffixlen + i] = suffix[i]; | |
1da177e4 LT |
2890 | return len; |
2891 | } | |
2892 | ||
222f1806 LC |
2893 | static char tohex(char hexdigit) |
2894 | { | |
2895 | return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0'; | |
1da177e4 LT |
2896 | } |
2897 | ||
222f1806 LC |
2898 | static int fmt_xlong(char *s, unsigned int i) |
2899 | { | |
2900 | char *bak = s; | |
2901 | *s = tohex((i >> 12) & 0xf); | |
2902 | if (s != bak || *s != '0') | |
2903 | ++s; | |
2904 | *s = tohex((i >> 8) & 0xf); | |
2905 | if (s != bak || *s != '0') | |
2906 | ++s; | |
2907 | *s = tohex((i >> 4) & 0xf); | |
2908 | if (s != bak || *s != '0') | |
2909 | ++s; | |
2910 | *s = tohex(i & 0xf); | |
2911 | return s - bak + 1; | |
1da177e4 LT |
2912 | } |
2913 | ||
222f1806 LC |
2914 | static unsigned int fmt_ip6(char *s, const char ip[16]) |
2915 | { | |
1da177e4 LT |
2916 | unsigned int len; |
2917 | unsigned int i; | |
2918 | unsigned int temp; | |
2919 | unsigned int compressing; | |
2920 | int j; | |
2921 | ||
222f1806 LC |
2922 | len = 0; |
2923 | compressing = 0; | |
2924 | for (j = 0; j < 16; j += 2) { | |
1da177e4 LT |
2925 | |
2926 | #ifdef V4MAPPEDPREFIX | |
222f1806 LC |
2927 | if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) { |
2928 | inet_ntoa_r(*(struct in_addr *)(ip + 12), s); | |
2929 | temp = strlen(s); | |
2930 | return len + temp; | |
1da177e4 LT |
2931 | } |
2932 | #endif | |
222f1806 LC |
2933 | temp = ((unsigned long)(unsigned char)ip[j] << 8) + |
2934 | (unsigned long)(unsigned char)ip[j + 1]; | |
1da177e4 LT |
2935 | if (temp == 0) { |
2936 | if (!compressing) { | |
222f1806 LC |
2937 | compressing = 1; |
2938 | if (j == 0) { | |
2939 | *s++ = ':'; | |
2940 | ++len; | |
1da177e4 LT |
2941 | } |
2942 | } | |
2943 | } else { | |
2944 | if (compressing) { | |
222f1806 LC |
2945 | compressing = 0; |
2946 | *s++ = ':'; | |
2947 | ++len; | |
1da177e4 | 2948 | } |
222f1806 LC |
2949 | i = fmt_xlong(s, temp); |
2950 | len += i; | |
2951 | s += i; | |
2952 | if (j < 14) { | |
1da177e4 LT |
2953 | *s++ = ':'; |
2954 | ++len; | |
2955 | } | |
2956 | } | |
2957 | } | |
2958 | if (compressing) { | |
222f1806 LC |
2959 | *s++ = ':'; |
2960 | ++len; | |
1da177e4 | 2961 | } |
222f1806 | 2962 | *s = 0; |
1da177e4 LT |
2963 | return len; |
2964 | } | |
2965 | ||
222f1806 LC |
2966 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2967 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2968 | { |
2969 | struct sk_buff *skb = NULL; | |
2970 | __u8 *eth; | |
2971 | struct udphdr *udph; | |
2972 | int datalen; | |
2973 | struct ipv6hdr *iph; | |
222f1806 | 2974 | struct pktgen_hdr *pgh = NULL; |
d5f1ce9a | 2975 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2976 | __be32 *mpls; |
34954ddc FF |
2977 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2978 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2979 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2980 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2981 | u16 queue_map; |
ca6549af SW |
2982 | |
2983 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2984 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2985 | |
34954ddc | 2986 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2987 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2988 | |
64053bee RO |
2989 | /* Update any of the values, used when we're incrementing various |
2990 | * fields. | |
2991 | */ | |
fd2ea0a7 | 2992 | queue_map = pkt_dev->cur_queue_map; |
64053bee RO |
2993 | mod_cur_headers(pkt_dev); |
2994 | ||
e470757d SH |
2995 | skb = __netdev_alloc_skb(odev, |
2996 | pkt_dev->cur_pkt_size + 64 | |
2997 | + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT); | |
1da177e4 LT |
2998 | if (!skb) { |
2999 | sprintf(pkt_dev->result, "No memory"); | |
3000 | return NULL; | |
3001 | } | |
3002 | ||
3003 | skb_reserve(skb, 16); | |
3004 | ||
3005 | /* Reserve for ethernet and IP header */ | |
3006 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
3007 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
3008 | if (pkt_dev->nr_labels) | |
3009 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
3010 | |
3011 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 3012 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 3013 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
3014 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
3015 | pkt_dev->svlan_cfi, | |
3016 | pkt_dev->svlan_p); | |
34954ddc | 3017 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 3018 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
3019 | } |
3020 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
3021 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
3022 | pkt_dev->vlan_cfi, | |
3023 | pkt_dev->vlan_p); | |
34954ddc | 3024 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 3025 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
3026 | } |
3027 | ||
27a884dc | 3028 | skb->network_header = skb->tail; |
b0e380b1 | 3029 | skb->transport_header = skb->network_header + sizeof(struct ipv6hdr); |
ddc7b8e3 | 3030 | skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr)); |
fd2ea0a7 | 3031 | skb_set_queue_mapping(skb, queue_map); |
ddc7b8e3 ACM |
3032 | iph = ipv6_hdr(skb); |
3033 | udph = udp_hdr(skb); | |
1da177e4 | 3034 | |
1da177e4 | 3035 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 3036 | *(__be16 *) ð[12] = protocol; |
64053bee | 3037 | |
ca6549af SW |
3038 | /* Eth + IPh + UDPh + mpls */ |
3039 | datalen = pkt_dev->cur_pkt_size - 14 - | |
3040 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 3041 | pkt_dev->pkt_overhead; |
1da177e4 | 3042 | |
222f1806 | 3043 | if (datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 LT |
3044 | datalen = sizeof(struct pktgen_hdr); |
3045 | if (net_ratelimit()) | |
f9467eae | 3046 | pr_info("increased datalen to %d\n", datalen); |
1da177e4 LT |
3047 | } |
3048 | ||
3049 | udph->source = htons(pkt_dev->cur_udp_src); | |
3050 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 LC |
3051 | udph->len = htons(datalen + sizeof(struct udphdr)); |
3052 | udph->check = 0; /* No checksum */ | |
1da177e4 | 3053 | |
d5f1ce9a | 3054 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 3055 | |
1ca7768c FF |
3056 | if (pkt_dev->traffic_class) { |
3057 | /* Version + traffic class + flow (0) */ | |
252e3346 | 3058 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
3059 | } |
3060 | ||
1da177e4 LT |
3061 | iph->hop_limit = 32; |
3062 | ||
3063 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); | |
3064 | iph->nexthdr = IPPROTO_UDP; | |
3065 | ||
3066 | ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr); | |
3067 | ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr); | |
3068 | ||
b0e380b1 | 3069 | skb->mac_header = (skb->network_header - ETH_HLEN - |
16dab72f | 3070 | pkt_dev->pkt_overhead); |
ca6549af | 3071 | skb->protocol = protocol; |
1da177e4 LT |
3072 | skb->dev = odev; |
3073 | skb->pkt_type = PACKET_HOST; | |
3074 | ||
222f1806 LC |
3075 | if (pkt_dev->nfrags <= 0) |
3076 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); | |
1da177e4 LT |
3077 | else { |
3078 | int frags = pkt_dev->nfrags; | |
3079 | int i; | |
3080 | ||
222f1806 LC |
3081 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); |
3082 | ||
1da177e4 LT |
3083 | if (frags > MAX_SKB_FRAGS) |
3084 | frags = MAX_SKB_FRAGS; | |
222f1806 LC |
3085 | if (datalen > frags * PAGE_SIZE) { |
3086 | skb_put(skb, datalen - frags * PAGE_SIZE); | |
3087 | datalen = frags * PAGE_SIZE; | |
1da177e4 LT |
3088 | } |
3089 | ||
3090 | i = 0; | |
3091 | while (datalen > 0) { | |
3092 | struct page *page = alloc_pages(GFP_KERNEL, 0); | |
3093 | skb_shinfo(skb)->frags[i].page = page; | |
3094 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
3095 | skb_shinfo(skb)->frags[i].size = | |
222f1806 | 3096 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); |
1da177e4 LT |
3097 | datalen -= skb_shinfo(skb)->frags[i].size; |
3098 | skb->len += skb_shinfo(skb)->frags[i].size; | |
3099 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
3100 | i++; | |
3101 | skb_shinfo(skb)->nr_frags = i; | |
3102 | } | |
3103 | ||
3104 | while (i < frags) { | |
3105 | int rem; | |
3106 | ||
3107 | if (i == 0) | |
3108 | break; | |
3109 | ||
3110 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
3111 | if (rem == 0) | |
3112 | break; | |
3113 | ||
3114 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
3115 | ||
222f1806 LC |
3116 | skb_shinfo(skb)->frags[i] = |
3117 | skb_shinfo(skb)->frags[i - 1]; | |
1da177e4 | 3118 | get_page(skb_shinfo(skb)->frags[i].page); |
222f1806 LC |
3119 | skb_shinfo(skb)->frags[i].page = |
3120 | skb_shinfo(skb)->frags[i - 1].page; | |
3121 | skb_shinfo(skb)->frags[i].page_offset += | |
3122 | skb_shinfo(skb)->frags[i - 1].size; | |
1da177e4 LT |
3123 | skb_shinfo(skb)->frags[i].size = rem; |
3124 | i++; | |
3125 | skb_shinfo(skb)->nr_frags = i; | |
3126 | } | |
3127 | } | |
3128 | ||
63adc6fb SH |
3129 | /* Stamp the time, and sequence number, |
3130 | * convert them to network byte order | |
3131 | * should we update cloned packets too ? | |
3132 | */ | |
222f1806 LC |
3133 | if (pgh) { |
3134 | struct timeval timestamp; | |
3135 | ||
3136 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
3137 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
3138 | ||
3139 | do_gettimeofday(×tamp); | |
3140 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
3141 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
3142 | } | |
34954ddc | 3143 | /* pkt_dev->seq_num++; FF: you really mean this? */ |
222f1806 | 3144 | |
1da177e4 LT |
3145 | return skb; |
3146 | } | |
3147 | ||
475ac1e4 SH |
3148 | static struct sk_buff *fill_packet(struct net_device *odev, |
3149 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3150 | { |
222f1806 | 3151 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
3152 | return fill_packet_ipv6(odev, pkt_dev); |
3153 | else | |
3154 | return fill_packet_ipv4(odev, pkt_dev); | |
3155 | } | |
3156 | ||
222f1806 | 3157 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 3158 | { |
222f1806 LC |
3159 | pkt_dev->seq_num = 1; |
3160 | pkt_dev->idle_acc = 0; | |
1da177e4 | 3161 | pkt_dev->sofar = 0; |
222f1806 LC |
3162 | pkt_dev->tx_bytes = 0; |
3163 | pkt_dev->errors = 0; | |
1da177e4 LT |
3164 | } |
3165 | ||
3166 | /* Set up structure for sending pkts, clear counters */ | |
3167 | ||
3168 | static void pktgen_run(struct pktgen_thread *t) | |
3169 | { | |
c26a8016 | 3170 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
3171 | int started = 0; |
3172 | ||
f9467eae | 3173 | func_enter(); |
1da177e4 LT |
3174 | |
3175 | if_lock(t); | |
c26a8016 | 3176 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
1da177e4 LT |
3177 | |
3178 | /* | |
3179 | * setup odev and create initial packet. | |
3180 | */ | |
3181 | pktgen_setup_inject(pkt_dev); | |
3182 | ||
222f1806 | 3183 | if (pkt_dev->odev) { |
1da177e4 | 3184 | pktgen_clear_counters(pkt_dev); |
222f1806 | 3185 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3186 | pkt_dev->skb = NULL; |
fd29cf72 SH |
3187 | pkt_dev->started_at = |
3188 | pkt_dev->next_tx = ktime_now(); | |
3189 | ||
16dab72f | 3190 | set_pkt_overhead(pkt_dev); |
222f1806 | 3191 | |
1da177e4 LT |
3192 | strcpy(pkt_dev->result, "Starting"); |
3193 | started++; | |
222f1806 | 3194 | } else |
1da177e4 LT |
3195 | strcpy(pkt_dev->result, "Error starting"); |
3196 | } | |
3197 | if_unlock(t); | |
222f1806 LC |
3198 | if (started) |
3199 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3200 | } |
3201 | ||
3202 | static void pktgen_stop_all_threads_ifs(void) | |
3203 | { | |
cdcdbe0b | 3204 | struct pktgen_thread *t; |
1da177e4 | 3205 | |
f9467eae | 3206 | func_enter(); |
1da177e4 | 3207 | |
6146e6a4 | 3208 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3209 | |
3210 | list_for_each_entry(t, &pktgen_threads, th_list) | |
95ed63f7 | 3211 | t->control |= T_STOP; |
cdcdbe0b | 3212 | |
6146e6a4 | 3213 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3214 | } |
3215 | ||
648fda74 | 3216 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3217 | { |
648fda74 | 3218 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3219 | |
c26a8016 | 3220 | list_for_each_entry(pkt_dev, &t->if_list, list) |
648fda74 SH |
3221 | if (pkt_dev->running) |
3222 | return 1; | |
3223 | return 0; | |
1da177e4 LT |
3224 | } |
3225 | ||
222f1806 | 3226 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3227 | { |
222f1806 | 3228 | if_lock(t); |
1da177e4 | 3229 | |
222f1806 | 3230 | while (thread_is_running(t)) { |
1da177e4 | 3231 | |
222f1806 | 3232 | if_unlock(t); |
1da177e4 | 3233 | |
222f1806 | 3234 | msleep_interruptible(100); |
1da177e4 | 3235 | |
222f1806 LC |
3236 | if (signal_pending(current)) |
3237 | goto signal; | |
3238 | if_lock(t); | |
3239 | } | |
3240 | if_unlock(t); | |
3241 | return 1; | |
3242 | signal: | |
3243 | return 0; | |
1da177e4 LT |
3244 | } |
3245 | ||
3246 | static int pktgen_wait_all_threads_run(void) | |
3247 | { | |
cdcdbe0b | 3248 | struct pktgen_thread *t; |
1da177e4 | 3249 | int sig = 1; |
222f1806 | 3250 | |
6146e6a4 | 3251 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b LC |
3252 | |
3253 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1da177e4 | 3254 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3255 | if (sig == 0) |
3256 | break; | |
1da177e4 | 3257 | } |
cdcdbe0b LC |
3258 | |
3259 | if (sig == 0) | |
3260 | list_for_each_entry(t, &pktgen_threads, th_list) | |
1da177e4 | 3261 | t->control |= (T_STOP); |
cdcdbe0b | 3262 | |
6146e6a4 | 3263 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3264 | return sig; |
3265 | } | |
3266 | ||
3267 | static void pktgen_run_all_threads(void) | |
3268 | { | |
cdcdbe0b | 3269 | struct pktgen_thread *t; |
1da177e4 | 3270 | |
f9467eae | 3271 | func_enter(); |
1da177e4 | 3272 | |
6146e6a4 | 3273 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3274 | |
cdcdbe0b | 3275 | list_for_each_entry(t, &pktgen_threads, th_list) |
1da177e4 | 3276 | t->control |= (T_RUN); |
cdcdbe0b | 3277 | |
6146e6a4 | 3278 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3279 | |
63adc6fb SH |
3280 | /* Propagate thread->control */ |
3281 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3282 | |
1da177e4 LT |
3283 | pktgen_wait_all_threads_run(); |
3284 | } | |
3285 | ||
eb37b41c JB |
3286 | static void pktgen_reset_all_threads(void) |
3287 | { | |
3288 | struct pktgen_thread *t; | |
3289 | ||
f9467eae | 3290 | func_enter(); |
eb37b41c JB |
3291 | |
3292 | mutex_lock(&pktgen_thread_lock); | |
3293 | ||
3294 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3295 | t->control |= (T_REMDEVALL); | |
3296 | ||
3297 | mutex_unlock(&pktgen_thread_lock); | |
3298 | ||
63adc6fb SH |
3299 | /* Propagate thread->control */ |
3300 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c JB |
3301 | |
3302 | pktgen_wait_all_threads_run(); | |
3303 | } | |
3304 | ||
1da177e4 LT |
3305 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3306 | { | |
fd29cf72 | 3307 | __u64 bps, mbps, pps; |
222f1806 | 3308 | char *p = pkt_dev->result; |
fd29cf72 SH |
3309 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3310 | pkt_dev->started_at); | |
3311 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3312 | ||
3313 | p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n", | |
3314 | (unsigned long long)ktime_to_us(elapsed), | |
3315 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3316 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3317 | (unsigned long long)pkt_dev->sofar, |
3318 | pkt_dev->cur_pkt_size, nr_frags); | |
3319 | ||
fd29cf72 SH |
3320 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3321 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3322 | |
3323 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3324 | ||
3325 | mbps = bps; | |
3326 | do_div(mbps, 1000000); | |
3327 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3328 | (unsigned long long)pps, | |
3329 | (unsigned long long)mbps, | |
3330 | (unsigned long long)bps, | |
3331 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3332 | } |
1da177e4 LT |
3333 | |
3334 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3335 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3336 | { |
222f1806 | 3337 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3338 | |
222f1806 | 3339 | if (!pkt_dev->running) { |
f9467eae JP |
3340 | pr_warning("interface: %s is already stopped\n", |
3341 | pkt_dev->odevname); | |
222f1806 LC |
3342 | return -EINVAL; |
3343 | } | |
1da177e4 | 3344 | |
3bda06a3 SH |
3345 | kfree_skb(pkt_dev->skb); |
3346 | pkt_dev->skb = NULL; | |
fd29cf72 | 3347 | pkt_dev->stopped_at = ktime_now(); |
222f1806 | 3348 | pkt_dev->running = 0; |
1da177e4 | 3349 | |
95ed63f7 | 3350 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3351 | |
222f1806 | 3352 | return 0; |
1da177e4 LT |
3353 | } |
3354 | ||
222f1806 | 3355 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3356 | { |
c26a8016 | 3357 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3358 | |
1da177e4 LT |
3359 | if_lock(t); |
3360 | ||
c26a8016 LC |
3361 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3362 | if (!pkt_dev->running) | |
222f1806 LC |
3363 | continue; |
3364 | if (best == NULL) | |
c26a8016 | 3365 | best = pkt_dev; |
fd29cf72 | 3366 | else if (ktime_lt(pkt_dev->next_tx, best->next_tx)) |
c26a8016 | 3367 | best = pkt_dev; |
1da177e4 LT |
3368 | } |
3369 | if_unlock(t); | |
222f1806 | 3370 | return best; |
1da177e4 LT |
3371 | } |
3372 | ||
222f1806 LC |
3373 | static void pktgen_stop(struct pktgen_thread *t) |
3374 | { | |
c26a8016 | 3375 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3376 | |
f9467eae | 3377 | func_enter(); |
1da177e4 | 3378 | |
222f1806 | 3379 | if_lock(t); |
1da177e4 | 3380 | |
c26a8016 LC |
3381 | list_for_each_entry(pkt_dev, &t->if_list, list) { |
3382 | pktgen_stop_device(pkt_dev); | |
95ed63f7 | 3383 | } |
1da177e4 | 3384 | |
222f1806 | 3385 | if_unlock(t); |
1da177e4 LT |
3386 | } |
3387 | ||
95ed63f7 AK |
3388 | /* |
3389 | * one of our devices needs to be removed - find it | |
3390 | * and remove it | |
3391 | */ | |
3392 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3393 | { | |
c26a8016 LC |
3394 | struct list_head *q, *n; |
3395 | struct pktgen_dev *cur; | |
95ed63f7 | 3396 | |
f9467eae | 3397 | func_enter(); |
95ed63f7 AK |
3398 | |
3399 | if_lock(t); | |
3400 | ||
c26a8016 LC |
3401 | list_for_each_safe(q, n, &t->if_list) { |
3402 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3403 | |
222f1806 LC |
3404 | if (!cur->removal_mark) |
3405 | continue; | |
95ed63f7 | 3406 | |
86dc1ad2 | 3407 | kfree_skb(cur->skb); |
95ed63f7 AK |
3408 | cur->skb = NULL; |
3409 | ||
3410 | pktgen_remove_device(t, cur); | |
3411 | ||
3412 | break; | |
3413 | } | |
3414 | ||
3415 | if_unlock(t); | |
3416 | } | |
3417 | ||
222f1806 | 3418 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3419 | { |
c26a8016 LC |
3420 | struct list_head *q, *n; |
3421 | struct pktgen_dev *cur; | |
222f1806 | 3422 | |
f9467eae JP |
3423 | func_enter(); |
3424 | ||
222f1806 | 3425 | /* Remove all devices, free mem */ |
95ed63f7 | 3426 | |
222f1806 | 3427 | if_lock(t); |
1da177e4 | 3428 | |
c26a8016 LC |
3429 | list_for_each_safe(q, n, &t->if_list) { |
3430 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3431 | |
86dc1ad2 | 3432 | kfree_skb(cur->skb); |
95ed63f7 AK |
3433 | cur->skb = NULL; |
3434 | ||
1da177e4 LT |
3435 | pktgen_remove_device(t, cur); |
3436 | } | |
3437 | ||
222f1806 | 3438 | if_unlock(t); |
1da177e4 LT |
3439 | } |
3440 | ||
222f1806 | 3441 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3442 | { |
222f1806 | 3443 | /* Remove from the thread list */ |
1da177e4 | 3444 | |
ee74baa7 | 3445 | remove_proc_entry(t->tsk->comm, pg_proc_dir); |
1da177e4 | 3446 | |
6146e6a4 | 3447 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3448 | |
cdcdbe0b LC |
3449 | list_del(&t->th_list); |
3450 | ||
6146e6a4 | 3451 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3452 | } |
3453 | ||
ef87979c | 3454 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3455 | { |
fd29cf72 | 3456 | ktime_t idle_start = ktime_now(); |
ef87979c SH |
3457 | schedule(); |
3458 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); | |
3459 | } | |
3791decb | 3460 | |
ef87979c SH |
3461 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3462 | { | |
3463 | ktime_t idle_start = ktime_now(); | |
3791decb | 3464 | |
ef87979c SH |
3465 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3466 | if (signal_pending(current)) | |
3467 | break; | |
3468 | ||
3469 | if (need_resched()) | |
3470 | pktgen_resched(pkt_dev); | |
3471 | else | |
3472 | cpu_relax(); | |
3473 | } | |
fd29cf72 | 3474 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start)); |
3791decb SH |
3475 | } |
3476 | ||
475ac1e4 | 3477 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3478 | { |
00829823 | 3479 | struct net_device *odev = pkt_dev->odev; |
6fef4c0c | 3480 | netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *) |
00829823 | 3481 | = odev->netdev_ops->ndo_start_xmit; |
fd2ea0a7 | 3482 | struct netdev_queue *txq; |
fd2ea0a7 | 3483 | u16 queue_map; |
1da177e4 LT |
3484 | int ret; |
3485 | ||
ef87979c SH |
3486 | /* If device is offline, then don't send */ |
3487 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3488 | pktgen_stop_device(pkt_dev); | |
3489 | return; | |
fd2ea0a7 DM |
3490 | } |
3491 | ||
ef87979c SH |
3492 | /* This is max DELAY, this has special meaning of |
3493 | * "never transmit" | |
3494 | */ | |
3495 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
3496 | pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX); | |
3791decb | 3497 | return; |
1da177e4 | 3498 | } |
222f1806 | 3499 | |
ef87979c | 3500 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3501 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3502 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3503 | /* build a new pkt */ | |
3504 | kfree_skb(pkt_dev->skb); | |
3505 | ||
3506 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3507 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3508 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3509 | schedule(); |
3510 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3511 | return; | |
1da177e4 | 3512 | } |
baac8564 | 3513 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3514 | pkt_dev->allocated_skbs++; |
3515 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3516 | } |
95ed63f7 | 3517 | |
ef87979c SH |
3518 | if (pkt_dev->delay && pkt_dev->last_ok) |
3519 | spin(pkt_dev, pkt_dev->next_tx); | |
3520 | ||
fd2ea0a7 DM |
3521 | queue_map = skb_get_queue_mapping(pkt_dev->skb); |
3522 | txq = netdev_get_tx_queue(odev, queue_map); | |
3523 | ||
3524 | __netif_tx_lock_bh(txq); | |
5b8db2f5 | 3525 | |
0835acfe | 3526 | if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) { |
ef87979c | 3527 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3528 | pkt_dev->last_ok = 0; |
3529 | goto unlock; | |
3530 | } | |
3531 | atomic_inc(&(pkt_dev->skb->users)); | |
3532 | ret = (*xmit)(pkt_dev->skb, odev); | |
ef87979c SH |
3533 | |
3534 | switch (ret) { | |
3535 | case NETDEV_TX_OK: | |
3536 | txq_trans_update(txq); | |
3537 | pkt_dev->last_ok = 1; | |
3538 | pkt_dev->sofar++; | |
3539 | pkt_dev->seq_num++; | |
baac8564 | 3540 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
ef87979c | 3541 | break; |
f466dba1 JF |
3542 | case NET_XMIT_DROP: |
3543 | case NET_XMIT_CN: | |
3544 | case NET_XMIT_POLICED: | |
3545 | /* skb has been consumed */ | |
3546 | pkt_dev->errors++; | |
3547 | break; | |
ef87979c SH |
3548 | default: /* Drivers are not supposed to return other values! */ |
3549 | if (net_ratelimit()) | |
3550 | pr_info("pktgen: %s xmit error: %d\n", | |
593f63b0 | 3551 | pkt_dev->odevname, ret); |
ef87979c SH |
3552 | pkt_dev->errors++; |
3553 | /* fallthru */ | |
3554 | case NETDEV_TX_LOCKED: | |
3555 | case NETDEV_TX_BUSY: | |
3556 | /* Retry it next time */ | |
3557 | atomic_dec(&(pkt_dev->skb->users)); | |
3558 | pkt_dev->last_ok = 0; | |
222f1806 | 3559 | } |
0835acfe | 3560 | unlock: |
fd2ea0a7 | 3561 | __netif_tx_unlock_bh(txq); |
222f1806 | 3562 | |
1da177e4 LT |
3563 | /* If pkt_dev->count is zero, then run forever */ |
3564 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3565 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3566 | |
1da177e4 LT |
3567 | /* Done with this */ |
3568 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3569 | } |
222f1806 | 3570 | } |
1da177e4 | 3571 | |
4ec93edb | 3572 | /* |
1da177e4 LT |
3573 | * Main loop of the thread goes here |
3574 | */ | |
3575 | ||
ee74baa7 | 3576 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3577 | { |
3578 | DEFINE_WAIT(wait); | |
ee74baa7 | 3579 | struct pktgen_thread *t = arg; |
222f1806 | 3580 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3581 | int cpu = t->cpu; |
1da177e4 | 3582 | |
ee74baa7 | 3583 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3584 | |
3585 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3586 | complete(&t->start_done); |
1da177e4 | 3587 | |
f9467eae | 3588 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3589 | |
ee74baa7 | 3590 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3591 | |
83144186 RW |
3592 | set_freezable(); |
3593 | ||
ee74baa7 DM |
3594 | while (!kthread_should_stop()) { |
3595 | pkt_dev = next_to_run(t); | |
1da177e4 | 3596 | |
ef87979c SH |
3597 | if (unlikely(!pkt_dev && t->control == 0)) { |
3598 | wait_event_interruptible_timeout(t->queue, | |
3599 | t->control != 0, | |
3600 | HZ/10); | |
1b3f720b | 3601 | try_to_freeze(); |
ef87979c | 3602 | continue; |
ee74baa7 | 3603 | } |
1da177e4 | 3604 | |
ee74baa7 | 3605 | __set_current_state(TASK_RUNNING); |
222f1806 | 3606 | |
ef87979c | 3607 | if (likely(pkt_dev)) { |
1da177e4 LT |
3608 | pktgen_xmit(pkt_dev); |
3609 | ||
ef87979c SH |
3610 | if (need_resched()) |
3611 | pktgen_resched(pkt_dev); | |
3612 | else | |
3613 | cpu_relax(); | |
3614 | } | |
3615 | ||
222f1806 | 3616 | if (t->control & T_STOP) { |
1da177e4 LT |
3617 | pktgen_stop(t); |
3618 | t->control &= ~(T_STOP); | |
3619 | } | |
3620 | ||
222f1806 | 3621 | if (t->control & T_RUN) { |
1da177e4 LT |
3622 | pktgen_run(t); |
3623 | t->control &= ~(T_RUN); | |
3624 | } | |
3625 | ||
222f1806 | 3626 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3627 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3628 | t->control &= ~(T_REMDEVALL); |
3629 | } | |
3630 | ||
222f1806 | 3631 | if (t->control & T_REMDEV) { |
95ed63f7 | 3632 | pktgen_rem_one_if(t); |
1da177e4 LT |
3633 | t->control &= ~(T_REMDEV); |
3634 | } | |
3635 | ||
09fe3ef4 AM |
3636 | try_to_freeze(); |
3637 | ||
ee74baa7 | 3638 | set_current_state(TASK_INTERRUPTIBLE); |
222f1806 | 3639 | } |
1da177e4 | 3640 | |
f9467eae | 3641 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3642 | pktgen_stop(t); |
1da177e4 | 3643 | |
f9467eae | 3644 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3645 | pktgen_rem_all_ifs(t); |
1da177e4 | 3646 | |
f9467eae | 3647 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3648 | pktgen_rem_thread(t); |
cdcdbe0b | 3649 | |
ee74baa7 | 3650 | return 0; |
1da177e4 LT |
3651 | } |
3652 | ||
222f1806 | 3653 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3654 | const char *ifname, bool exact) |
1da177e4 | 3655 | { |
c26a8016 | 3656 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3657 | size_t len = strlen(ifname); |
222f1806 | 3658 | |
3e984840 | 3659 | if_lock(t); |
c26a8016 | 3660 | list_for_each_entry(p, &t->if_list, list) |
3e984840 ED |
3661 | if (strncmp(p->odevname, ifname, len) == 0) { |
3662 | if (p->odevname[len]) { | |
3663 | if (exact || p->odevname[len] != '@') | |
3664 | continue; | |
3665 | } | |
c26a8016 | 3666 | pkt_dev = p; |
222f1806 LC |
3667 | break; |
3668 | } | |
222f1806 LC |
3669 | |
3670 | if_unlock(t); | |
f9467eae | 3671 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3672 | return pkt_dev; |
1da177e4 LT |
3673 | } |
3674 | ||
4ec93edb YH |
3675 | /* |
3676 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3677 | */ |
3678 | ||
222f1806 LC |
3679 | static int add_dev_to_thread(struct pktgen_thread *t, |
3680 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3681 | { |
3682 | int rv = 0; | |
222f1806 LC |
3683 | |
3684 | if_lock(t); | |
3685 | ||
3686 | if (pkt_dev->pg_thread) { | |
f9467eae | 3687 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3688 | rv = -EBUSY; |
3689 | goto out; | |
3690 | } | |
c26a8016 LC |
3691 | |
3692 | list_add(&pkt_dev->list, &t->if_list); | |
222f1806 | 3693 | pkt_dev->pg_thread = t; |
1da177e4 LT |
3694 | pkt_dev->running = 0; |
3695 | ||
222f1806 LC |
3696 | out: |
3697 | if_unlock(t); | |
3698 | return rv; | |
1da177e4 LT |
3699 | } |
3700 | ||
3701 | /* Called under thread lock */ | |
3702 | ||
222f1806 | 3703 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3704 | { |
222f1806 | 3705 | struct pktgen_dev *pkt_dev; |
39df232f | 3706 | int err; |
3291b9db | 3707 | int node = cpu_to_node(t->cpu); |
222f1806 | 3708 | |
1da177e4 LT |
3709 | /* We don't allow a device to be on several threads */ |
3710 | ||
d50a6b56 SH |
3711 | pkt_dev = __pktgen_NN_threads(ifname, FIND); |
3712 | if (pkt_dev) { | |
f9467eae | 3713 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3714 | return -EBUSY; |
3715 | } | |
d50a6b56 | 3716 | |
3291b9db | 3717 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3718 | if (!pkt_dev) |
3719 | return -ENOMEM; | |
3720 | ||
593f63b0 | 3721 | strcpy(pkt_dev->odevname, ifname); |
3291b9db ED |
3722 | pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3723 | node); | |
d50a6b56 SH |
3724 | if (pkt_dev->flows == NULL) { |
3725 | kfree(pkt_dev); | |
3726 | return -ENOMEM; | |
3727 | } | |
222f1806 | 3728 | memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state)); |
d50a6b56 | 3729 | |
95ed63f7 | 3730 | pkt_dev->removal_mark = 0; |
d50a6b56 SH |
3731 | pkt_dev->min_pkt_size = ETH_ZLEN; |
3732 | pkt_dev->max_pkt_size = ETH_ZLEN; | |
3733 | pkt_dev->nfrags = 0; | |
3734 | pkt_dev->clone_skb = pg_clone_skb_d; | |
fd29cf72 | 3735 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3736 | pkt_dev->count = pg_count_d; |
3737 | pkt_dev->sofar = 0; | |
222f1806 | 3738 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3739 | pkt_dev->udp_src_max = 9; |
3740 | pkt_dev->udp_dst_min = 9; | |
3741 | pkt_dev->udp_dst_max = 9; | |
3742 | ||
34954ddc FF |
3743 | pkt_dev->vlan_p = 0; |
3744 | pkt_dev->vlan_cfi = 0; | |
3745 | pkt_dev->vlan_id = 0xffff; | |
3746 | pkt_dev->svlan_p = 0; | |
3747 | pkt_dev->svlan_cfi = 0; | |
3748 | pkt_dev->svlan_id = 0xffff; | |
e99b99b4 | 3749 | pkt_dev->node = -1; |
34954ddc | 3750 | |
39df232f SH |
3751 | err = pktgen_setup_dev(pkt_dev, ifname); |
3752 | if (err) | |
3753 | goto out1; | |
d50a6b56 | 3754 | |
5efdccbc DL |
3755 | pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir, |
3756 | &pktgen_if_fops, pkt_dev); | |
39df232f | 3757 | if (!pkt_dev->entry) { |
f9467eae | 3758 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3759 | PG_PROC_DIR, ifname); |
39df232f SH |
3760 | err = -EINVAL; |
3761 | goto out2; | |
d50a6b56 | 3762 | } |
a553e4a6 JHS |
3763 | #ifdef CONFIG_XFRM |
3764 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3765 | pkt_dev->ipsproto = IPPROTO_ESP; | |
3766 | #endif | |
d50a6b56 SH |
3767 | |
3768 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3769 | out2: |
3770 | dev_put(pkt_dev->odev); | |
3771 | out1: | |
a553e4a6 JHS |
3772 | #ifdef CONFIG_XFRM |
3773 | free_SAs(pkt_dev); | |
3774 | #endif | |
1d0ebfe7 | 3775 | vfree(pkt_dev->flows); |
39df232f SH |
3776 | kfree(pkt_dev); |
3777 | return err; | |
1da177e4 LT |
3778 | } |
3779 | ||
ee74baa7 | 3780 | static int __init pktgen_create_thread(int cpu) |
1da177e4 | 3781 | { |
cdcdbe0b | 3782 | struct pktgen_thread *t; |
d50a6b56 | 3783 | struct proc_dir_entry *pe; |
ee74baa7 | 3784 | struct task_struct *p; |
222f1806 | 3785 | |
3291b9db ED |
3786 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3787 | cpu_to_node(cpu)); | |
222f1806 | 3788 | if (!t) { |
f9467eae | 3789 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3790 | return -ENOMEM; |
3791 | } | |
3792 | ||
222f1806 | 3793 | spin_lock_init(&t->if_lock); |
1da177e4 | 3794 | t->cpu = cpu; |
222f1806 | 3795 | |
ee74baa7 DM |
3796 | INIT_LIST_HEAD(&t->if_list); |
3797 | ||
3798 | list_add_tail(&t->th_list, &pktgen_threads); | |
d3ede327 | 3799 | init_completion(&t->start_done); |
ee74baa7 DM |
3800 | |
3801 | p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu); | |
3802 | if (IS_ERR(p)) { | |
f9467eae | 3803 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3804 | list_del(&t->th_list); |
3805 | kfree(t); | |
3806 | return PTR_ERR(p); | |
3807 | } | |
3808 | kthread_bind(p, cpu); | |
3809 | t->tsk = p; | |
3810 | ||
5efdccbc DL |
3811 | pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir, |
3812 | &pktgen_thread_fops, t); | |
222f1806 | 3813 | if (!pe) { |
f9467eae | 3814 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3815 | PG_PROC_DIR, t->tsk->comm); |
3816 | kthread_stop(p); | |
3817 | list_del(&t->th_list); | |
222f1806 LC |
3818 | kfree(t); |
3819 | return -EINVAL; | |
3820 | } | |
d50a6b56 | 3821 | |
ee74baa7 | 3822 | wake_up_process(p); |
d3ede327 | 3823 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3824 | |
3825 | return 0; | |
3826 | } | |
3827 | ||
4ec93edb YH |
3828 | /* |
3829 | * Removes a device from the thread if_list. | |
1da177e4 | 3830 | */ |
222f1806 LC |
3831 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3832 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3833 | { |
c26a8016 LC |
3834 | struct list_head *q, *n; |
3835 | struct pktgen_dev *p; | |
1da177e4 | 3836 | |
c26a8016 LC |
3837 | list_for_each_safe(q, n, &t->if_list) { |
3838 | p = list_entry(q, struct pktgen_dev, list); | |
3839 | if (p == pkt_dev) | |
3840 | list_del(&p->list); | |
1da177e4 LT |
3841 | } |
3842 | } | |
3843 | ||
222f1806 LC |
3844 | static int pktgen_remove_device(struct pktgen_thread *t, |
3845 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3846 | { |
3847 | ||
f9467eae | 3848 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3849 | |
222f1806 | 3850 | if (pkt_dev->running) { |
f9467eae | 3851 | pr_warning("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3852 | pktgen_stop_device(pkt_dev); |
3853 | } | |
3854 | ||
3855 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3856 | |
3857 | if (pkt_dev->odev) { | |
3858 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3859 | pkt_dev->odev = NULL; |
3860 | } | |
3861 | ||
1da177e4 LT |
3862 | /* And update the thread if_list */ |
3863 | ||
3864 | _rem_dev_from_if_list(t, pkt_dev); | |
3865 | ||
39df232f SH |
3866 | if (pkt_dev->entry) |
3867 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1da177e4 | 3868 | |
a553e4a6 JHS |
3869 | #ifdef CONFIG_XFRM |
3870 | free_SAs(pkt_dev); | |
3871 | #endif | |
1d0ebfe7 | 3872 | vfree(pkt_dev->flows); |
1da177e4 | 3873 | kfree(pkt_dev); |
222f1806 | 3874 | return 0; |
1da177e4 LT |
3875 | } |
3876 | ||
222f1806 | 3877 | static int __init pg_init(void) |
1da177e4 LT |
3878 | { |
3879 | int cpu; | |
d50a6b56 | 3880 | struct proc_dir_entry *pe; |
1da177e4 | 3881 | |
f9467eae | 3882 | pr_info("%s", version); |
1da177e4 | 3883 | |
457c4cbc | 3884 | pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net); |
d50a6b56 SH |
3885 | if (!pg_proc_dir) |
3886 | return -ENODEV; | |
1da177e4 | 3887 | |
25296d59 | 3888 | pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops); |
222f1806 | 3889 | if (pe == NULL) { |
f9467eae | 3890 | pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL); |
457c4cbc | 3891 | proc_net_remove(&init_net, PG_PROC_DIR); |
222f1806 LC |
3892 | return -EINVAL; |
3893 | } | |
1da177e4 | 3894 | |
1da177e4 LT |
3895 | /* Register us to receive netdevice events */ |
3896 | register_netdevice_notifier(&pktgen_notifier_block); | |
222f1806 | 3897 | |
670c02c2 | 3898 | for_each_online_cpu(cpu) { |
8024bb24 | 3899 | int err; |
1da177e4 | 3900 | |
ee74baa7 | 3901 | err = pktgen_create_thread(cpu); |
8024bb24 | 3902 | if (err) |
f9467eae JP |
3903 | pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n", |
3904 | cpu, err); | |
222f1806 | 3905 | } |
8024bb24 LC |
3906 | |
3907 | if (list_empty(&pktgen_threads)) { | |
f9467eae | 3908 | pr_err("ERROR: Initialization failed for all threads\n"); |
8024bb24 LC |
3909 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3910 | remove_proc_entry(PGCTRL, pg_proc_dir); | |
457c4cbc | 3911 | proc_net_remove(&init_net, PG_PROC_DIR); |
8024bb24 LC |
3912 | return -ENODEV; |
3913 | } | |
3914 | ||
222f1806 | 3915 | return 0; |
1da177e4 LT |
3916 | } |
3917 | ||
3918 | static void __exit pg_cleanup(void) | |
3919 | { | |
cdcdbe0b LC |
3920 | struct pktgen_thread *t; |
3921 | struct list_head *q, *n; | |
1da177e4 LT |
3922 | wait_queue_head_t queue; |
3923 | init_waitqueue_head(&queue); | |
3924 | ||
222f1806 | 3925 | /* Stop all interfaces & threads */ |
1da177e4 | 3926 | |
cdcdbe0b LC |
3927 | list_for_each_safe(q, n, &pktgen_threads) { |
3928 | t = list_entry(q, struct pktgen_thread, th_list); | |
ee74baa7 DM |
3929 | kthread_stop(t->tsk); |
3930 | kfree(t); | |
222f1806 | 3931 | } |
1da177e4 | 3932 | |
222f1806 | 3933 | /* Un-register us from receiving netdevice events */ |
1da177e4 LT |
3934 | unregister_netdevice_notifier(&pktgen_notifier_block); |
3935 | ||
222f1806 | 3936 | /* Clean up proc file system */ |
d50a6b56 | 3937 | remove_proc_entry(PGCTRL, pg_proc_dir); |
457c4cbc | 3938 | proc_net_remove(&init_net, PG_PROC_DIR); |
1da177e4 LT |
3939 | } |
3940 | ||
1da177e4 LT |
3941 | module_init(pg_init); |
3942 | module_exit(pg_cleanup); | |
3943 | ||
c3d2f52d | 3944 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3945 | MODULE_DESCRIPTION("Packet Generator tool"); |
3946 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3947 | MODULE_VERSION(VERSION); |
1da177e4 | 3948 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3949 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3950 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3951 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3952 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3953 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3954 | module_param(debug, int, 0); |
c3d2f52d | 3955 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |