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1da177e4 LT |
1 | /* |
2 | * Authors: | |
3 | * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> | |
4 | * Uppsala University and | |
5 | * Swedish University of Agricultural Sciences | |
6 | * | |
7 | * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> | |
8 | * Ben Greear <greearb@candelatech.com> | |
96de0e25 | 9 | * Jens Låås <jens.laas@data.slu.se> |
1da177e4 LT |
10 | * |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | * | |
16 | * | |
17 | * A tool for loading the network with preconfigurated packets. | |
4ec93edb | 18 | * The tool is implemented as a linux module. Parameters are output |
1da177e4 LT |
19 | * device, delay (to hard_xmit), number of packets, and whether |
20 | * to use multiple SKBs or just the same one. | |
21 | * pktgen uses the installed interface's output routine. | |
22 | * | |
23 | * Additional hacking by: | |
24 | * | |
25 | * Jens.Laas@data.slu.se | |
26 | * Improved by ANK. 010120. | |
27 | * Improved by ANK even more. 010212. | |
28 | * MAC address typo fixed. 010417 --ro | |
29 | * Integrated. 020301 --DaveM | |
30 | * Added multiskb option 020301 --DaveM | |
31 | * Scaling of results. 020417--sigurdur@linpro.no | |
32 | * Significant re-work of the module: | |
33 | * * Convert to threaded model to more efficiently be able to transmit | |
34 | * and receive on multiple interfaces at once. | |
35 | * * Converted many counters to __u64 to allow longer runs. | |
36 | * * Allow configuration of ranges, like min/max IP address, MACs, | |
37 | * and UDP-ports, for both source and destination, and can | |
38 | * set to use a random distribution or sequentially walk the range. | |
39 | * * Can now change most values after starting. | |
40 | * * Place 12-byte packet in UDP payload with magic number, | |
41 | * sequence number, and timestamp. | |
42 | * * Add receiver code that detects dropped pkts, re-ordered pkts, and | |
43 | * latencies (with micro-second) precision. | |
44 | * * Add IOCTL interface to easily get counters & configuration. | |
45 | * --Ben Greear <greearb@candelatech.com> | |
46 | * | |
4ec93edb YH |
47 | * Renamed multiskb to clone_skb and cleaned up sending core for two distinct |
48 | * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0 | |
1da177e4 | 49 | * as a "fastpath" with a configurable number of clones after alloc's. |
4ec93edb YH |
50 | * clone_skb=0 means all packets are allocated this also means ranges time |
51 | * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100 | |
1da177e4 LT |
52 | * clones. |
53 | * | |
4ec93edb | 54 | * Also moved to /proc/net/pktgen/ |
1da177e4 LT |
55 | * --ro |
56 | * | |
57 | * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever | |
58 | * mistakes. Also merged in DaveM's patch in the -pre6 patch. | |
59 | * --Ben Greear <greearb@candelatech.com> | |
60 | * | |
61 | * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br) | |
62 | * | |
4ec93edb | 63 | * |
1da177e4 LT |
64 | * 021124 Finished major redesign and rewrite for new functionality. |
65 | * See Documentation/networking/pktgen.txt for how to use this. | |
66 | * | |
67 | * The new operation: | |
4ec93edb YH |
68 | * For each CPU one thread/process is created at start. This process checks |
69 | * for running devices in the if_list and sends packets until count is 0 it | |
70 | * also the thread checks the thread->control which is used for inter-process | |
71 | * communication. controlling process "posts" operations to the threads this | |
8788370a JDB |
72 | * way. |
73 | * The if_list is RCU protected, and the if_lock remains to protect updating | |
74 | * of if_list, from "add_device" as it invoked from userspace (via proc write). | |
1da177e4 | 75 | * |
4ec93edb YH |
76 | * By design there should only be *one* "controlling" process. In practice |
77 | * multiple write accesses gives unpredictable result. Understood by "write" | |
1da177e4 | 78 | * to /proc gives result code thats should be read be the "writer". |
b4099fab | 79 | * For practical use this should be no problem. |
1da177e4 | 80 | * |
4ec93edb YH |
81 | * Note when adding devices to a specific CPU there good idea to also assign |
82 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
1da177e4 LT |
83 | * --ro |
84 | * | |
4ec93edb | 85 | * Fix refcount off by one if first packet fails, potential null deref, |
1da177e4 LT |
86 | * memleak 030710- KJP |
87 | * | |
88 | * First "ranges" functionality for ipv6 030726 --ro | |
89 | * | |
90 | * Included flow support. 030802 ANK. | |
91 | * | |
92 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
4ec93edb | 93 | * |
1da177e4 LT |
94 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 |
95 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
96 | * | |
4ec93edb | 97 | * New xmit() return, do_div and misc clean up by Stephen Hemminger |
1da177e4 LT |
98 | * <shemminger@osdl.org> 040923 |
99 | * | |
4ec93edb | 100 | * Randy Dunlap fixed u64 printk compiler waring |
1da177e4 LT |
101 | * |
102 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
103 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
104 | * | |
4ec93edb | 105 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) |
1da177e4 LT |
106 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 |
107 | * | |
4ec93edb | 108 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> |
1da177e4 | 109 | * 050103 |
ca6549af SW |
110 | * |
111 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
112 | * | |
34954ddc FF |
113 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> |
114 | * | |
ce5d0b47 AR |
115 | * Fixed src_mac command to set source mac of packet to value specified in |
116 | * command by Adit Ranadive <adit.262@gmail.com> | |
117 | * | |
1da177e4 | 118 | */ |
f9467eae JP |
119 | |
120 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
121 | ||
1da177e4 LT |
122 | #include <linux/sys.h> |
123 | #include <linux/types.h> | |
124 | #include <linux/module.h> | |
125 | #include <linux/moduleparam.h> | |
126 | #include <linux/kernel.h> | |
222fa076 | 127 | #include <linux/mutex.h> |
1da177e4 LT |
128 | #include <linux/sched.h> |
129 | #include <linux/slab.h> | |
130 | #include <linux/vmalloc.h> | |
1da177e4 LT |
131 | #include <linux/unistd.h> |
132 | #include <linux/string.h> | |
133 | #include <linux/ptrace.h> | |
134 | #include <linux/errno.h> | |
135 | #include <linux/ioport.h> | |
136 | #include <linux/interrupt.h> | |
4fc268d2 | 137 | #include <linux/capability.h> |
2bc481cf | 138 | #include <linux/hrtimer.h> |
09fe3ef4 | 139 | #include <linux/freezer.h> |
1da177e4 LT |
140 | #include <linux/delay.h> |
141 | #include <linux/timer.h> | |
cdcdbe0b | 142 | #include <linux/list.h> |
1da177e4 LT |
143 | #include <linux/init.h> |
144 | #include <linux/skbuff.h> | |
145 | #include <linux/netdevice.h> | |
146 | #include <linux/inet.h> | |
147 | #include <linux/inetdevice.h> | |
148 | #include <linux/rtnetlink.h> | |
149 | #include <linux/if_arp.h> | |
34954ddc | 150 | #include <linux/if_vlan.h> |
1da177e4 LT |
151 | #include <linux/in.h> |
152 | #include <linux/ip.h> | |
153 | #include <linux/ipv6.h> | |
154 | #include <linux/udp.h> | |
155 | #include <linux/proc_fs.h> | |
d50a6b56 | 156 | #include <linux/seq_file.h> |
1da177e4 | 157 | #include <linux/wait.h> |
f404e9a6 | 158 | #include <linux/etherdevice.h> |
ee74baa7 | 159 | #include <linux/kthread.h> |
268bb0ce | 160 | #include <linux/prefetch.h> |
457c4cbc | 161 | #include <net/net_namespace.h> |
1da177e4 LT |
162 | #include <net/checksum.h> |
163 | #include <net/ipv6.h> | |
c26bf4a5 | 164 | #include <net/udp.h> |
73d94e94 | 165 | #include <net/ip6_checksum.h> |
1da177e4 | 166 | #include <net/addrconf.h> |
a553e4a6 JHS |
167 | #ifdef CONFIG_XFRM |
168 | #include <net/xfrm.h> | |
169 | #endif | |
4e58a027 | 170 | #include <net/netns/generic.h> |
1da177e4 LT |
171 | #include <asm/byteorder.h> |
172 | #include <linux/rcupdate.h> | |
1977f032 | 173 | #include <linux/bitops.h> |
63adc6fb SH |
174 | #include <linux/io.h> |
175 | #include <linux/timex.h> | |
176 | #include <linux/uaccess.h> | |
1da177e4 | 177 | #include <asm/dma.h> |
222f1806 | 178 | #include <asm/div64.h> /* do_div */ |
1da177e4 | 179 | |
43d28b65 | 180 | #define VERSION "2.74" |
1da177e4 | 181 | #define IP_NAME_SZ 32 |
ca6549af | 182 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ |
d5f1ce9a | 183 | #define MPLS_STACK_BOTTOM htonl(0x00000100) |
1da177e4 | 184 | |
f9467eae JP |
185 | #define func_enter() pr_debug("entering %s\n", __func__); |
186 | ||
1da177e4 | 187 | /* Device flag bits */ |
222f1806 LC |
188 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ |
189 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
190 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
191 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
192 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
193 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
194 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
195 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
ca6549af | 196 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ |
34954ddc FF |
197 | #define F_VID_RND (1<<9) /* Random VLAN ID */ |
198 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
007a531b | 199 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ |
a553e4a6 | 200 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ |
45b270f8 | 201 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ |
e6fce5b9 | 202 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ |
e99b99b4 | 203 | #define F_NODE (1<<15) /* Node memory alloc*/ |
c26bf4a5 | 204 | #define F_UDPCSUM (1<<16) /* Include UDP checksum */ |
1da177e4 LT |
205 | |
206 | /* Thread control flag bits */ | |
6b80d6a6 SH |
207 | #define T_STOP (1<<0) /* Stop run */ |
208 | #define T_RUN (1<<1) /* Start run */ | |
209 | #define T_REMDEVALL (1<<2) /* Remove all devs */ | |
210 | #define T_REMDEV (1<<3) /* Remove one dev */ | |
1da177e4 | 211 | |
8788370a | 212 | /* If lock -- protects updating of if_list */ |
1da177e4 LT |
213 | #define if_lock(t) spin_lock(&(t->if_lock)); |
214 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
215 | ||
216 | /* Used to help with determining the pkts on receive */ | |
217 | #define PKTGEN_MAGIC 0xbe9be955 | |
d50a6b56 SH |
218 | #define PG_PROC_DIR "pktgen" |
219 | #define PGCTRL "pgctrl" | |
1da177e4 LT |
220 | |
221 | #define MAX_CFLOWS 65536 | |
222 | ||
34954ddc FF |
223 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) |
224 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
225 | ||
222f1806 | 226 | struct flow_state { |
252e3346 | 227 | __be32 cur_daddr; |
222f1806 | 228 | int count; |
a553e4a6 JHS |
229 | #ifdef CONFIG_XFRM |
230 | struct xfrm_state *x; | |
231 | #endif | |
007a531b | 232 | __u32 flags; |
1da177e4 LT |
233 | }; |
234 | ||
007a531b JHS |
235 | /* flow flag bits */ |
236 | #define F_INIT (1<<0) /* flow has been initialized */ | |
237 | ||
1da177e4 | 238 | struct pktgen_dev { |
1da177e4 LT |
239 | /* |
240 | * Try to keep frequent/infrequent used vars. separated. | |
241 | */ | |
39df232f SH |
242 | struct proc_dir_entry *entry; /* proc file */ |
243 | struct pktgen_thread *pg_thread;/* the owner */ | |
63adc6fb | 244 | struct list_head list; /* chaining in the thread's run-queue */ |
8788370a | 245 | struct rcu_head rcu; /* freed by RCU */ |
1da177e4 | 246 | |
63adc6fb | 247 | int running; /* if false, the test will stop */ |
1da177e4 | 248 | |
222f1806 LC |
249 | /* If min != max, then we will either do a linear iteration, or |
250 | * we will do a random selection from within the range. | |
251 | */ | |
252 | __u32 flags; | |
95ed63f7 AK |
253 | int removal_mark; /* non-zero => the device is marked for |
254 | * removal by worker thread */ | |
1da177e4 | 255 | |
68bf9f0b AW |
256 | int min_pkt_size; |
257 | int max_pkt_size; | |
16dab72f | 258 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ |
222f1806 | 259 | int nfrags; |
26ad7879 | 260 | struct page *page; |
fd29cf72 SH |
261 | u64 delay; /* nano-seconds */ |
262 | ||
222f1806 LC |
263 | __u64 count; /* Default No packets to send */ |
264 | __u64 sofar; /* How many pkts we've sent so far */ | |
265 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
f466dba1 | 266 | __u64 errors; /* Errors when trying to transmit, */ |
222f1806 LC |
267 | |
268 | /* runtime counters relating to clone_skb */ | |
222f1806 LC |
269 | |
270 | __u64 allocated_skbs; | |
271 | __u32 clone_count; | |
272 | int last_ok; /* Was last skb sent? | |
63adc6fb SH |
273 | * Or a failed transmit of some sort? |
274 | * This will keep sequence numbers in order | |
222f1806 | 275 | */ |
fd29cf72 SH |
276 | ktime_t next_tx; |
277 | ktime_t started_at; | |
278 | ktime_t stopped_at; | |
279 | u64 idle_acc; /* nano-seconds */ | |
280 | ||
222f1806 LC |
281 | __u32 seq_num; |
282 | ||
63adc6fb SH |
283 | int clone_skb; /* |
284 | * Use multiple SKBs during packet gen. | |
285 | * If this number is greater than 1, then | |
286 | * that many copies of the same packet will be | |
287 | * sent before a new packet is allocated. | |
288 | * If you want to send 1024 identical packets | |
289 | * before creating a new packet, | |
290 | * set clone_skb to 1024. | |
222f1806 LC |
291 | */ |
292 | ||
293 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
294 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
295 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
296 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
297 | ||
298 | struct in6_addr in6_saddr; | |
299 | struct in6_addr in6_daddr; | |
300 | struct in6_addr cur_in6_daddr; | |
301 | struct in6_addr cur_in6_saddr; | |
1da177e4 | 302 | /* For ranges */ |
222f1806 LC |
303 | struct in6_addr min_in6_daddr; |
304 | struct in6_addr max_in6_daddr; | |
305 | struct in6_addr min_in6_saddr; | |
306 | struct in6_addr max_in6_saddr; | |
307 | ||
308 | /* If we're doing ranges, random or incremental, then this | |
309 | * defines the min/max for those ranges. | |
310 | */ | |
252e3346 AV |
311 | __be32 saddr_min; /* inclusive, source IP address */ |
312 | __be32 saddr_max; /* exclusive, source IP address */ | |
313 | __be32 daddr_min; /* inclusive, dest IP address */ | |
314 | __be32 daddr_max; /* exclusive, dest IP address */ | |
222f1806 LC |
315 | |
316 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
317 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
318 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
319 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
320 | ||
1ca7768c | 321 | /* DSCP + ECN */ |
63adc6fb SH |
322 | __u8 tos; /* six MSB of (former) IPv4 TOS |
323 | are for dscp codepoint */ | |
324 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 | |
325 | (see RFC 3260, sec. 4) */ | |
1ca7768c | 326 | |
ca6549af | 327 | /* MPLS */ |
95c96174 | 328 | unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */ |
ca6549af SW |
329 | __be32 labels[MAX_MPLS_LABELS]; |
330 | ||
34954ddc FF |
331 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ |
332 | __u8 vlan_p; | |
333 | __u8 vlan_cfi; | |
334 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
335 | ||
336 | __u8 svlan_p; | |
337 | __u8 svlan_cfi; | |
338 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
339 | ||
222f1806 LC |
340 | __u32 src_mac_count; /* How many MACs to iterate through */ |
341 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
342 | ||
343 | unsigned char dst_mac[ETH_ALEN]; | |
344 | unsigned char src_mac[ETH_ALEN]; | |
345 | ||
346 | __u32 cur_dst_mac_offset; | |
347 | __u32 cur_src_mac_offset; | |
252e3346 AV |
348 | __be32 cur_saddr; |
349 | __be32 cur_daddr; | |
66ed1e5e | 350 | __u16 ip_id; |
222f1806 LC |
351 | __u16 cur_udp_dst; |
352 | __u16 cur_udp_src; | |
45b270f8 | 353 | __u16 cur_queue_map; |
222f1806 | 354 | __u32 cur_pkt_size; |
baac8564 | 355 | __u32 last_pkt_size; |
222f1806 LC |
356 | |
357 | __u8 hh[14]; | |
358 | /* = { | |
359 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
360 | ||
361 | We fill in SRC address later | |
362 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
363 | 0x08, 0x00 | |
364 | }; | |
365 | */ | |
366 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
367 | ||
63adc6fb | 368 | struct sk_buff *skb; /* skb we are to transmit next, used for when we |
222f1806 LC |
369 | * are transmitting the same one multiple times |
370 | */ | |
63adc6fb SH |
371 | struct net_device *odev; /* The out-going device. |
372 | * Note that the device should have it's | |
373 | * pg_info pointer pointing back to this | |
374 | * device. | |
375 | * Set when the user specifies the out-going | |
376 | * device name (not when the inject is | |
377 | * started as it used to do.) | |
378 | */ | |
593f63b0 | 379 | char odevname[32]; |
1da177e4 | 380 | struct flow_state *flows; |
95c96174 ED |
381 | unsigned int cflows; /* Concurrent flows (config) */ |
382 | unsigned int lflow; /* Flow length (config) */ | |
383 | unsigned int nflows; /* accumulated flows (stats) */ | |
384 | unsigned int curfl; /* current sequenced flow (state)*/ | |
45b270f8 RO |
385 | |
386 | u16 queue_map_min; | |
387 | u16 queue_map_max; | |
9e50e3ac | 388 | __u32 skb_priority; /* skb priority field */ |
e99b99b4 | 389 | int node; /* Memory node */ |
45b270f8 | 390 | |
a553e4a6 JHS |
391 | #ifdef CONFIG_XFRM |
392 | __u8 ipsmode; /* IPSEC mode (config) */ | |
393 | __u8 ipsproto; /* IPSEC type (config) */ | |
de4aee7d | 394 | __u32 spi; |
cf93d47e FD |
395 | struct dst_entry dst; |
396 | struct dst_ops dstops; | |
a553e4a6 | 397 | #endif |
39df232f | 398 | char result[512]; |
1da177e4 LT |
399 | }; |
400 | ||
401 | struct pktgen_hdr { | |
252e3346 AV |
402 | __be32 pgh_magic; |
403 | __be32 seq_num; | |
404 | __be32 tv_sec; | |
405 | __be32 tv_usec; | |
1da177e4 LT |
406 | }; |
407 | ||
4e58a027 CW |
408 | |
409 | static int pg_net_id __read_mostly; | |
410 | ||
411 | struct pktgen_net { | |
412 | struct net *net; | |
413 | struct proc_dir_entry *proc_dir; | |
414 | struct list_head pktgen_threads; | |
415 | bool pktgen_exiting; | |
416 | }; | |
551eaff1 | 417 | |
1da177e4 | 418 | struct pktgen_thread { |
63adc6fb | 419 | spinlock_t if_lock; /* for list of devices */ |
c26a8016 | 420 | struct list_head if_list; /* All device here */ |
cdcdbe0b | 421 | struct list_head th_list; |
ee74baa7 | 422 | struct task_struct *tsk; |
222f1806 | 423 | char result[512]; |
222f1806 | 424 | |
63adc6fb SH |
425 | /* Field for thread to receive "posted" events terminate, |
426 | stop ifs etc. */ | |
222f1806 LC |
427 | |
428 | u32 control; | |
1da177e4 LT |
429 | int cpu; |
430 | ||
222f1806 | 431 | wait_queue_head_t queue; |
d3ede327 | 432 | struct completion start_done; |
4e58a027 | 433 | struct pktgen_net *net; |
1da177e4 LT |
434 | }; |
435 | ||
436 | #define REMOVE 1 | |
437 | #define FIND 0 | |
438 | ||
c3d2f52d | 439 | static const char version[] = |
f9467eae JP |
440 | "Packet Generator for packet performance testing. " |
441 | "Version: " VERSION "\n"; | |
1da177e4 | 442 | |
222f1806 LC |
443 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); |
444 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
445 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3e984840 | 446 | const char *ifname, bool exact); |
1da177e4 | 447 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); |
4e58a027 CW |
448 | static void pktgen_run_all_threads(struct pktgen_net *pn); |
449 | static void pktgen_reset_all_threads(struct pktgen_net *pn); | |
450 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn); | |
3bda06a3 | 451 | |
222f1806 | 452 | static void pktgen_stop(struct pktgen_thread *t); |
1da177e4 | 453 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); |
39df232f | 454 | |
1da177e4 | 455 | /* Module parameters, defaults. */ |
65c5b786 SH |
456 | static int pg_count_d __read_mostly = 1000; |
457 | static int pg_delay_d __read_mostly; | |
458 | static int pg_clone_skb_d __read_mostly; | |
459 | static int debug __read_mostly; | |
1da177e4 | 460 | |
222fa076 | 461 | static DEFINE_MUTEX(pktgen_thread_lock); |
1da177e4 | 462 | |
1da177e4 LT |
463 | static struct notifier_block pktgen_notifier_block = { |
464 | .notifier_call = pktgen_device_event, | |
465 | }; | |
466 | ||
1da177e4 | 467 | /* |
4ec93edb | 468 | * /proc handling functions |
1da177e4 LT |
469 | * |
470 | */ | |
471 | ||
d50a6b56 | 472 | static int pgctrl_show(struct seq_file *seq, void *v) |
222f1806 | 473 | { |
c3d2f52d | 474 | seq_puts(seq, version); |
d50a6b56 | 475 | return 0; |
1da177e4 LT |
476 | } |
477 | ||
63adc6fb SH |
478 | static ssize_t pgctrl_write(struct file *file, const char __user *buf, |
479 | size_t count, loff_t *ppos) | |
1da177e4 | 480 | { |
d50a6b56 | 481 | char data[128]; |
4e58a027 | 482 | struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id); |
1da177e4 | 483 | |
09455747 MK |
484 | if (!capable(CAP_NET_ADMIN)) |
485 | return -EPERM; | |
1da177e4 | 486 | |
20b0c718 MK |
487 | if (count == 0) |
488 | return -EINVAL; | |
489 | ||
d50a6b56 SH |
490 | if (count > sizeof(data)) |
491 | count = sizeof(data); | |
1da177e4 | 492 | |
09455747 MK |
493 | if (copy_from_user(data, buf, count)) |
494 | return -EFAULT; | |
495 | ||
20b0c718 | 496 | data[count - 1] = 0; /* Strip trailing '\n' and terminate string */ |
1da177e4 | 497 | |
222f1806 | 498 | if (!strcmp(data, "stop")) |
4e58a027 | 499 | pktgen_stop_all_threads_ifs(pn); |
1da177e4 | 500 | |
222f1806 | 501 | else if (!strcmp(data, "start")) |
4e58a027 | 502 | pktgen_run_all_threads(pn); |
1da177e4 | 503 | |
eb37b41c | 504 | else if (!strcmp(data, "reset")) |
4e58a027 | 505 | pktgen_reset_all_threads(pn); |
eb37b41c | 506 | |
222f1806 | 507 | else |
f9467eae | 508 | pr_warning("Unknown command: %s\n", data); |
1da177e4 | 509 | |
09455747 | 510 | return count; |
1da177e4 LT |
511 | } |
512 | ||
d50a6b56 SH |
513 | static int pgctrl_open(struct inode *inode, struct file *file) |
514 | { | |
d9dda78b | 515 | return single_open(file, pgctrl_show, PDE_DATA(inode)); |
d50a6b56 SH |
516 | } |
517 | ||
9a32144e | 518 | static const struct file_operations pktgen_fops = { |
222f1806 LC |
519 | .owner = THIS_MODULE, |
520 | .open = pgctrl_open, | |
521 | .read = seq_read, | |
522 | .llseek = seq_lseek, | |
523 | .write = pgctrl_write, | |
524 | .release = single_release, | |
d50a6b56 SH |
525 | }; |
526 | ||
527 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
1da177e4 | 528 | { |
648fda74 | 529 | const struct pktgen_dev *pkt_dev = seq->private; |
fd29cf72 SH |
530 | ktime_t stopped; |
531 | u64 idle; | |
222f1806 LC |
532 | |
533 | seq_printf(seq, | |
534 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
535 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
536 | pkt_dev->max_pkt_size); | |
537 | ||
538 | seq_printf(seq, | |
fd29cf72 SH |
539 | " frags: %d delay: %llu clone_skb: %d ifname: %s\n", |
540 | pkt_dev->nfrags, (unsigned long long) pkt_dev->delay, | |
593f63b0 | 541 | pkt_dev->clone_skb, pkt_dev->odevname); |
222f1806 LC |
542 | |
543 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
544 | pkt_dev->lflow); | |
545 | ||
45b270f8 RO |
546 | seq_printf(seq, |
547 | " queue_map_min: %u queue_map_max: %u\n", | |
548 | pkt_dev->queue_map_min, | |
549 | pkt_dev->queue_map_max); | |
550 | ||
9e50e3ac JF |
551 | if (pkt_dev->skb_priority) |
552 | seq_printf(seq, " skb_priority: %u\n", | |
553 | pkt_dev->skb_priority); | |
554 | ||
222f1806 | 555 | if (pkt_dev->flags & F_IPV6) { |
222f1806 | 556 | seq_printf(seq, |
47a0200d AD |
557 | " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n" |
558 | " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n", | |
559 | &pkt_dev->in6_saddr, | |
560 | &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr, | |
561 | &pkt_dev->in6_daddr, | |
562 | &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr); | |
63adc6fb SH |
563 | } else { |
564 | seq_printf(seq, | |
565 | " dst_min: %s dst_max: %s\n", | |
566 | pkt_dev->dst_min, pkt_dev->dst_max); | |
222f1806 | 567 | seq_printf(seq, |
63adc6fb SH |
568 | " src_min: %s src_max: %s\n", |
569 | pkt_dev->src_min, pkt_dev->src_max); | |
570 | } | |
1da177e4 | 571 | |
222f1806 | 572 | seq_puts(seq, " src_mac: "); |
1da177e4 | 573 | |
e174961c JB |
574 | seq_printf(seq, "%pM ", |
575 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
576 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
222f1806 | 577 | |
97dc48e2 | 578 | seq_puts(seq, "dst_mac: "); |
e174961c | 579 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); |
222f1806 LC |
580 | |
581 | seq_printf(seq, | |
63adc6fb SH |
582 | " udp_src_min: %d udp_src_max: %d" |
583 | " udp_dst_min: %d udp_dst_max: %d\n", | |
222f1806 LC |
584 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, |
585 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
586 | ||
587 | seq_printf(seq, | |
ca6549af | 588 | " src_mac_count: %d dst_mac_count: %d\n", |
222f1806 | 589 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
1da177e4 | 590 | |
ca6549af | 591 | if (pkt_dev->nr_labels) { |
95c96174 | 592 | unsigned int i; |
97dc48e2 | 593 | seq_puts(seq, " mpls: "); |
e71a4783 | 594 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
595 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), |
596 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
597 | } | |
598 | ||
63adc6fb | 599 | if (pkt_dev->vlan_id != 0xffff) |
34954ddc | 600 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
601 | pkt_dev->vlan_id, pkt_dev->vlan_p, |
602 | pkt_dev->vlan_cfi); | |
34954ddc | 603 | |
63adc6fb | 604 | if (pkt_dev->svlan_id != 0xffff) |
34954ddc | 605 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", |
63adc6fb SH |
606 | pkt_dev->svlan_id, pkt_dev->svlan_p, |
607 | pkt_dev->svlan_cfi); | |
34954ddc | 608 | |
63adc6fb | 609 | if (pkt_dev->tos) |
1ca7768c | 610 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); |
1ca7768c | 611 | |
63adc6fb | 612 | if (pkt_dev->traffic_class) |
1ca7768c | 613 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); |
1ca7768c | 614 | |
e99b99b4 RO |
615 | if (pkt_dev->node >= 0) |
616 | seq_printf(seq, " node: %d\n", pkt_dev->node); | |
617 | ||
97dc48e2 | 618 | seq_puts(seq, " Flags: "); |
ca6549af | 619 | |
222f1806 | 620 | if (pkt_dev->flags & F_IPV6) |
97dc48e2 | 621 | seq_puts(seq, "IPV6 "); |
1da177e4 | 622 | |
222f1806 | 623 | if (pkt_dev->flags & F_IPSRC_RND) |
97dc48e2 | 624 | seq_puts(seq, "IPSRC_RND "); |
1da177e4 | 625 | |
222f1806 | 626 | if (pkt_dev->flags & F_IPDST_RND) |
97dc48e2 | 627 | seq_puts(seq, "IPDST_RND "); |
1da177e4 | 628 | |
222f1806 | 629 | if (pkt_dev->flags & F_TXSIZE_RND) |
97dc48e2 | 630 | seq_puts(seq, "TXSIZE_RND "); |
1da177e4 | 631 | |
222f1806 | 632 | if (pkt_dev->flags & F_UDPSRC_RND) |
97dc48e2 | 633 | seq_puts(seq, "UDPSRC_RND "); |
1da177e4 | 634 | |
222f1806 | 635 | if (pkt_dev->flags & F_UDPDST_RND) |
97dc48e2 | 636 | seq_puts(seq, "UDPDST_RND "); |
1da177e4 | 637 | |
c26bf4a5 | 638 | if (pkt_dev->flags & F_UDPCSUM) |
97dc48e2 | 639 | seq_puts(seq, "UDPCSUM "); |
c26bf4a5 | 640 | |
ca6549af | 641 | if (pkt_dev->flags & F_MPLS_RND) |
97dc48e2 | 642 | seq_puts(seq, "MPLS_RND "); |
ca6549af | 643 | |
45b270f8 | 644 | if (pkt_dev->flags & F_QUEUE_MAP_RND) |
97dc48e2 | 645 | seq_puts(seq, "QUEUE_MAP_RND "); |
45b270f8 | 646 | |
e6fce5b9 | 647 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) |
97dc48e2 | 648 | seq_puts(seq, "QUEUE_MAP_CPU "); |
e6fce5b9 | 649 | |
007a531b JHS |
650 | if (pkt_dev->cflows) { |
651 | if (pkt_dev->flags & F_FLOW_SEQ) | |
97dc48e2 | 652 | seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/ |
007a531b | 653 | else |
97dc48e2 | 654 | seq_puts(seq, "FLOW_RND "); |
007a531b JHS |
655 | } |
656 | ||
a553e4a6 | 657 | #ifdef CONFIG_XFRM |
8101328b | 658 | if (pkt_dev->flags & F_IPSEC_ON) { |
97dc48e2 | 659 | seq_puts(seq, "IPSEC "); |
8101328b FD |
660 | if (pkt_dev->spi) |
661 | seq_printf(seq, "spi:%u", pkt_dev->spi); | |
662 | } | |
a553e4a6 JHS |
663 | #endif |
664 | ||
222f1806 | 665 | if (pkt_dev->flags & F_MACSRC_RND) |
97dc48e2 | 666 | seq_puts(seq, "MACSRC_RND "); |
1da177e4 | 667 | |
222f1806 | 668 | if (pkt_dev->flags & F_MACDST_RND) |
97dc48e2 | 669 | seq_puts(seq, "MACDST_RND "); |
1da177e4 | 670 | |
34954ddc | 671 | if (pkt_dev->flags & F_VID_RND) |
97dc48e2 | 672 | seq_puts(seq, "VID_RND "); |
34954ddc FF |
673 | |
674 | if (pkt_dev->flags & F_SVID_RND) | |
97dc48e2 | 675 | seq_puts(seq, "SVID_RND "); |
34954ddc | 676 | |
e99b99b4 | 677 | if (pkt_dev->flags & F_NODE) |
97dc48e2 | 678 | seq_puts(seq, "NODE_ALLOC "); |
e99b99b4 | 679 | |
222f1806 LC |
680 | seq_puts(seq, "\n"); |
681 | ||
fd29cf72 | 682 | /* not really stopped, more like last-running-at */ |
398f382c | 683 | stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at; |
fd29cf72 SH |
684 | idle = pkt_dev->idle_acc; |
685 | do_div(idle, NSEC_PER_USEC); | |
1da177e4 | 686 | |
222f1806 | 687 | seq_printf(seq, |
fd29cf72 | 688 | "Current:\n pkts-sofar: %llu errors: %llu\n", |
222f1806 | 689 | (unsigned long long)pkt_dev->sofar, |
fd29cf72 SH |
690 | (unsigned long long)pkt_dev->errors); |
691 | ||
692 | seq_printf(seq, | |
693 | " started: %lluus stopped: %lluus idle: %lluus\n", | |
694 | (unsigned long long) ktime_to_us(pkt_dev->started_at), | |
695 | (unsigned long long) ktime_to_us(stopped), | |
696 | (unsigned long long) idle); | |
1da177e4 | 697 | |
222f1806 LC |
698 | seq_printf(seq, |
699 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
d50a6b56 SH |
700 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, |
701 | pkt_dev->cur_src_mac_offset); | |
1da177e4 | 702 | |
222f1806 | 703 | if (pkt_dev->flags & F_IPV6) { |
47a0200d AD |
704 | seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n", |
705 | &pkt_dev->cur_in6_saddr, | |
706 | &pkt_dev->cur_in6_daddr); | |
222f1806 | 707 | } else |
0373a946 AW |
708 | seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n", |
709 | &pkt_dev->cur_saddr, &pkt_dev->cur_daddr); | |
1da177e4 | 710 | |
222f1806 | 711 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", |
d50a6b56 | 712 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
1da177e4 | 713 | |
45b270f8 RO |
714 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); |
715 | ||
222f1806 | 716 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); |
1da177e4 LT |
717 | |
718 | if (pkt_dev->result[0]) | |
222f1806 | 719 | seq_printf(seq, "Result: %s\n", pkt_dev->result); |
1da177e4 | 720 | else |
97dc48e2 | 721 | seq_puts(seq, "Result: Idle\n"); |
1da177e4 | 722 | |
d50a6b56 | 723 | return 0; |
1da177e4 LT |
724 | } |
725 | ||
ca6549af | 726 | |
63adc6fb SH |
727 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, |
728 | __u32 *num) | |
ca6549af SW |
729 | { |
730 | int i = 0; | |
731 | *num = 0; | |
732 | ||
e71a4783 | 733 | for (; i < maxlen; i++) { |
82fd5b5d | 734 | int value; |
ca6549af SW |
735 | char c; |
736 | *num <<= 4; | |
737 | if (get_user(c, &user_buffer[i])) | |
738 | return -EFAULT; | |
82fd5b5d AS |
739 | value = hex_to_bin(c); |
740 | if (value >= 0) | |
741 | *num |= value; | |
ca6549af SW |
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 | ||
bf0813bd PG |
773 | static long num_arg(const char __user *user_buffer, unsigned long maxlen, |
774 | unsigned long *num) | |
1da177e4 | 775 | { |
d6182223 | 776 | int i; |
1da177e4 | 777 | *num = 0; |
222f1806 | 778 | |
d6182223 | 779 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
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 | 793 | { |
d6182223 | 794 | int i; |
1da177e4 | 795 | |
d6182223 | 796 | for (i = 0; i < maxlen; i++) { |
222f1806 LC |
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; | |
1da177e4 LT |
807 | default: |
808 | break; | |
3ff50b79 | 809 | } |
1da177e4 LT |
810 | } |
811 | done_str: | |
1da177e4 LT |
812 | return i; |
813 | } | |
814 | ||
ca6549af SW |
815 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) |
816 | { | |
95c96174 | 817 | unsigned int n = 0; |
ca6549af SW |
818 | char c; |
819 | ssize_t i = 0; | |
820 | int len; | |
821 | ||
822 | pkt_dev->nr_labels = 0; | |
823 | do { | |
824 | __u32 tmp; | |
1ca7768c | 825 | len = hex32_arg(&buffer[i], 8, &tmp); |
ca6549af SW |
826 | if (len <= 0) |
827 | return len; | |
828 | pkt_dev->labels[n] = htonl(tmp); | |
829 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
830 | pkt_dev->flags |= F_MPLS_RND; | |
831 | i += len; | |
832 | if (get_user(c, &buffer[i])) | |
833 | return -EFAULT; | |
834 | i++; | |
835 | n++; | |
836 | if (n >= MAX_MPLS_LABELS) | |
837 | return -E2BIG; | |
e71a4783 | 838 | } while (c == ','); |
ca6549af SW |
839 | |
840 | pkt_dev->nr_labels = n; | |
841 | return i; | |
842 | } | |
843 | ||
222f1806 LC |
844 | static ssize_t pktgen_if_write(struct file *file, |
845 | const char __user * user_buffer, size_t count, | |
846 | loff_t * offset) | |
1da177e4 | 847 | { |
8a994a71 | 848 | struct seq_file *seq = file->private_data; |
222f1806 | 849 | struct pktgen_dev *pkt_dev = seq->private; |
d6182223 | 850 | int i, max, len; |
1da177e4 LT |
851 | char name[16], valstr[32]; |
852 | unsigned long value = 0; | |
222f1806 LC |
853 | char *pg_result = NULL; |
854 | int tmp = 0; | |
1da177e4 | 855 | char buf[128]; |
222f1806 LC |
856 | |
857 | pg_result = &(pkt_dev->result[0]); | |
858 | ||
1da177e4 | 859 | if (count < 1) { |
f9467eae | 860 | pr_warning("wrong command format\n"); |
1da177e4 LT |
861 | return -EINVAL; |
862 | } | |
222f1806 | 863 | |
d6182223 PG |
864 | max = count; |
865 | tmp = count_trail_chars(user_buffer, max); | |
222f1806 | 866 | if (tmp < 0) { |
f9467eae | 867 | pr_warning("illegal format\n"); |
222f1806 | 868 | return tmp; |
1da177e4 | 869 | } |
d6182223 | 870 | i = tmp; |
222f1806 | 871 | |
1da177e4 LT |
872 | /* Read variable name */ |
873 | ||
874 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
63adc6fb | 875 | if (len < 0) |
222f1806 | 876 | return len; |
63adc6fb | 877 | |
1da177e4 | 878 | memset(name, 0, sizeof(name)); |
222f1806 | 879 | if (copy_from_user(name, &user_buffer[i], len)) |
1da177e4 LT |
880 | return -EFAULT; |
881 | i += len; | |
222f1806 LC |
882 | |
883 | max = count - i; | |
1da177e4 | 884 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 LC |
885 | if (len < 0) |
886 | return len; | |
887 | ||
1da177e4 LT |
888 | i += len; |
889 | ||
890 | if (debug) { | |
86c2c0a8 | 891 | size_t copy = min_t(size_t, count, 1023); |
448d7b5d NE |
892 | char tb[copy + 1]; |
893 | if (copy_from_user(tb, user_buffer, copy)) | |
1da177e4 | 894 | return -EFAULT; |
448d7b5d | 895 | tb[copy] = 0; |
f342cda7 JP |
896 | pr_debug("%s,%lu buffer -:%s:-\n", |
897 | name, (unsigned long)count, tb); | |
222f1806 | 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; |
d8873315 NH |
1075 | if ((value > 0) && |
1076 | (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING))) | |
1077 | return -ENOTSUPP; | |
1da177e4 | 1078 | i += len; |
222f1806 LC |
1079 | pkt_dev->clone_skb = value; |
1080 | ||
1da177e4 LT |
1081 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); |
1082 | return count; | |
1083 | } | |
1084 | if (!strcmp(name, "count")) { | |
1085 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1086 | if (len < 0) |
222f1806 | 1087 | return len; |
63adc6fb | 1088 | |
1da177e4 LT |
1089 | i += len; |
1090 | pkt_dev->count = value; | |
1091 | sprintf(pg_result, "OK: count=%llu", | |
222f1806 | 1092 | (unsigned long long)pkt_dev->count); |
1da177e4 LT |
1093 | return count; |
1094 | } | |
1095 | if (!strcmp(name, "src_mac_count")) { | |
1096 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1097 | if (len < 0) |
222f1806 | 1098 | return len; |
63adc6fb | 1099 | |
1da177e4 LT |
1100 | i += len; |
1101 | if (pkt_dev->src_mac_count != value) { | |
222f1806 LC |
1102 | pkt_dev->src_mac_count = value; |
1103 | pkt_dev->cur_src_mac_offset = 0; | |
1104 | } | |
1105 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1106 | pkt_dev->src_mac_count); | |
1da177e4 LT |
1107 | return count; |
1108 | } | |
1109 | if (!strcmp(name, "dst_mac_count")) { | |
1110 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1111 | if (len < 0) |
222f1806 | 1112 | return len; |
63adc6fb | 1113 | |
1da177e4 LT |
1114 | i += len; |
1115 | if (pkt_dev->dst_mac_count != value) { | |
222f1806 LC |
1116 | pkt_dev->dst_mac_count = value; |
1117 | pkt_dev->cur_dst_mac_offset = 0; | |
1118 | } | |
1119 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1120 | pkt_dev->dst_mac_count); | |
1da177e4 LT |
1121 | return count; |
1122 | } | |
e99b99b4 RO |
1123 | if (!strcmp(name, "node")) { |
1124 | len = num_arg(&user_buffer[i], 10, &value); | |
1125 | if (len < 0) | |
1126 | return len; | |
1127 | ||
1128 | i += len; | |
1129 | ||
1130 | if (node_possible(value)) { | |
1131 | pkt_dev->node = value; | |
1132 | sprintf(pg_result, "OK: node=%d", pkt_dev->node); | |
26ad7879 ED |
1133 | if (pkt_dev->page) { |
1134 | put_page(pkt_dev->page); | |
1135 | pkt_dev->page = NULL; | |
1136 | } | |
e99b99b4 RO |
1137 | } |
1138 | else | |
1139 | sprintf(pg_result, "ERROR: node not possible"); | |
1140 | return count; | |
1141 | } | |
1da177e4 | 1142 | if (!strcmp(name, "flag")) { |
222f1806 LC |
1143 | char f[32]; |
1144 | memset(f, 0, 32); | |
1da177e4 | 1145 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
63adc6fb | 1146 | if (len < 0) |
222f1806 | 1147 | return len; |
63adc6fb | 1148 | |
1da177e4 LT |
1149 | if (copy_from_user(f, &user_buffer[i], len)) |
1150 | return -EFAULT; | |
1151 | i += len; | |
222f1806 LC |
1152 | if (strcmp(f, "IPSRC_RND") == 0) |
1153 | pkt_dev->flags |= F_IPSRC_RND; | |
1154 | ||
1155 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1156 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1157 | ||
1158 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1159 | pkt_dev->flags |= F_TXSIZE_RND; | |
1160 | ||
1161 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1162 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1163 | ||
1164 | else if (strcmp(f, "IPDST_RND") == 0) | |
1165 | pkt_dev->flags |= F_IPDST_RND; | |
1166 | ||
1167 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1168 | pkt_dev->flags &= ~F_IPDST_RND; | |
1169 | ||
1170 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1171 | pkt_dev->flags |= F_UDPSRC_RND; | |
1172 | ||
1173 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1174 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1175 | ||
1176 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1177 | pkt_dev->flags |= F_UDPDST_RND; | |
1178 | ||
1179 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1180 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1181 | ||
1182 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1183 | pkt_dev->flags |= F_MACSRC_RND; | |
1184 | ||
1185 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1186 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1187 | ||
1188 | else if (strcmp(f, "MACDST_RND") == 0) | |
1189 | pkt_dev->flags |= F_MACDST_RND; | |
1190 | ||
1191 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1192 | pkt_dev->flags &= ~F_MACDST_RND; | |
1193 | ||
ca6549af SW |
1194 | else if (strcmp(f, "MPLS_RND") == 0) |
1195 | pkt_dev->flags |= F_MPLS_RND; | |
1196 | ||
1197 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1198 | pkt_dev->flags &= ~F_MPLS_RND; | |
1199 | ||
34954ddc FF |
1200 | else if (strcmp(f, "VID_RND") == 0) |
1201 | pkt_dev->flags |= F_VID_RND; | |
1202 | ||
1203 | else if (strcmp(f, "!VID_RND") == 0) | |
1204 | pkt_dev->flags &= ~F_VID_RND; | |
1205 | ||
1206 | else if (strcmp(f, "SVID_RND") == 0) | |
1207 | pkt_dev->flags |= F_SVID_RND; | |
1208 | ||
1209 | else if (strcmp(f, "!SVID_RND") == 0) | |
1210 | pkt_dev->flags &= ~F_SVID_RND; | |
1211 | ||
007a531b JHS |
1212 | else if (strcmp(f, "FLOW_SEQ") == 0) |
1213 | pkt_dev->flags |= F_FLOW_SEQ; | |
1214 | ||
45b270f8 RO |
1215 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) |
1216 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1217 | ||
1218 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1219 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
e6fce5b9 RO |
1220 | |
1221 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1222 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1223 | ||
1224 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1225 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
a553e4a6 JHS |
1226 | #ifdef CONFIG_XFRM |
1227 | else if (strcmp(f, "IPSEC") == 0) | |
1228 | pkt_dev->flags |= F_IPSEC_ON; | |
1229 | #endif | |
1230 | ||
1ca7768c FF |
1231 | else if (strcmp(f, "!IPV6") == 0) |
1232 | pkt_dev->flags &= ~F_IPV6; | |
1233 | ||
e99b99b4 RO |
1234 | else if (strcmp(f, "NODE_ALLOC") == 0) |
1235 | pkt_dev->flags |= F_NODE; | |
1236 | ||
1237 | else if (strcmp(f, "!NODE_ALLOC") == 0) | |
1238 | pkt_dev->flags &= ~F_NODE; | |
1239 | ||
c26bf4a5 TG |
1240 | else if (strcmp(f, "UDPCSUM") == 0) |
1241 | pkt_dev->flags |= F_UDPCSUM; | |
1242 | ||
1243 | else if (strcmp(f, "!UDPCSUM") == 0) | |
1244 | pkt_dev->flags &= ~F_UDPCSUM; | |
1245 | ||
222f1806 LC |
1246 | else { |
1247 | sprintf(pg_result, | |
1248 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1249 | f, | |
1ca7768c | 1250 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " |
72f8e06f MK |
1251 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, " |
1252 | "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, " | |
1253 | "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, " | |
1254 | #ifdef CONFIG_XFRM | |
1255 | "IPSEC, " | |
1256 | #endif | |
1257 | "NODE_ALLOC\n"); | |
222f1806 LC |
1258 | return count; |
1259 | } | |
1da177e4 LT |
1260 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); |
1261 | return count; | |
1262 | } | |
1263 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1264 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
63adc6fb | 1265 | if (len < 0) |
222f1806 | 1266 | return len; |
1da177e4 | 1267 | |
222f1806 | 1268 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1269 | return -EFAULT; |
222f1806 LC |
1270 | buf[len] = 0; |
1271 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1272 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1273 | strncpy(pkt_dev->dst_min, buf, len); | |
1274 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1275 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1276 | } | |
1277 | if (debug) | |
f342cda7 | 1278 | pr_debug("dst_min set to: %s\n", pkt_dev->dst_min); |
222f1806 | 1279 | i += len; |
1da177e4 LT |
1280 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
1281 | return count; | |
1282 | } | |
1283 | if (!strcmp(name, "dst_max")) { | |
1284 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
63adc6fb | 1285 | if (len < 0) |
222f1806 | 1286 | return len; |
63adc6fb | 1287 | |
1da177e4 | 1288 | |
222f1806 | 1289 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 LT |
1290 | return -EFAULT; |
1291 | ||
222f1806 LC |
1292 | buf[len] = 0; |
1293 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1294 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1295 | strncpy(pkt_dev->dst_max, buf, len); | |
1296 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1297 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1298 | } | |
1299 | if (debug) | |
f342cda7 | 1300 | pr_debug("dst_max set to: %s\n", pkt_dev->dst_max); |
1da177e4 LT |
1301 | i += len; |
1302 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1303 | return count; | |
1304 | } | |
1305 | if (!strcmp(name, "dst6")) { | |
1306 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1307 | if (len < 0) |
1308 | return len; | |
1da177e4 LT |
1309 | |
1310 | pkt_dev->flags |= F_IPV6; | |
1311 | ||
222f1806 | 1312 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1313 | return -EFAULT; |
222f1806 | 1314 | buf[len] = 0; |
1da177e4 | 1315 | |
c468fb13 | 1316 | in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1317 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr); |
1da177e4 | 1318 | |
4e3fd7a0 | 1319 | pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr; |
1da177e4 | 1320 | |
222f1806 | 1321 | if (debug) |
f342cda7 | 1322 | pr_debug("dst6 set to: %s\n", buf); |
1da177e4 | 1323 | |
222f1806 | 1324 | i += len; |
1da177e4 LT |
1325 | sprintf(pg_result, "OK: dst6=%s", buf); |
1326 | return count; | |
1327 | } | |
1328 | if (!strcmp(name, "dst6_min")) { | |
1329 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1330 | if (len < 0) |
1331 | return len; | |
1da177e4 LT |
1332 | |
1333 | pkt_dev->flags |= F_IPV6; | |
1334 | ||
222f1806 | 1335 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1336 | return -EFAULT; |
222f1806 | 1337 | buf[len] = 0; |
1da177e4 | 1338 | |
c468fb13 | 1339 | in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1340 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr); |
1da177e4 | 1341 | |
4e3fd7a0 | 1342 | pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr; |
222f1806 | 1343 | if (debug) |
f342cda7 | 1344 | pr_debug("dst6_min set to: %s\n", buf); |
1da177e4 | 1345 | |
222f1806 | 1346 | i += len; |
1da177e4 LT |
1347 | sprintf(pg_result, "OK: dst6_min=%s", buf); |
1348 | return count; | |
1349 | } | |
1350 | if (!strcmp(name, "dst6_max")) { | |
1351 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1352 | if (len < 0) |
1353 | return len; | |
1da177e4 LT |
1354 | |
1355 | pkt_dev->flags |= F_IPV6; | |
1356 | ||
222f1806 | 1357 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1358 | return -EFAULT; |
222f1806 | 1359 | buf[len] = 0; |
1da177e4 | 1360 | |
c468fb13 | 1361 | in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL); |
47a0200d | 1362 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr); |
1da177e4 | 1363 | |
222f1806 | 1364 | if (debug) |
f342cda7 | 1365 | pr_debug("dst6_max set to: %s\n", buf); |
1da177e4 | 1366 | |
222f1806 | 1367 | i += len; |
1da177e4 LT |
1368 | sprintf(pg_result, "OK: dst6_max=%s", buf); |
1369 | return count; | |
1370 | } | |
1371 | if (!strcmp(name, "src6")) { | |
1372 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
222f1806 LC |
1373 | if (len < 0) |
1374 | return len; | |
1da177e4 LT |
1375 | |
1376 | pkt_dev->flags |= F_IPV6; | |
1377 | ||
222f1806 | 1378 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1379 | return -EFAULT; |
222f1806 | 1380 | buf[len] = 0; |
1da177e4 | 1381 | |
c468fb13 | 1382 | in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL); |
47a0200d | 1383 | snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr); |
1da177e4 | 1384 | |
4e3fd7a0 | 1385 | pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr; |
1da177e4 | 1386 | |
222f1806 | 1387 | if (debug) |
f342cda7 | 1388 | pr_debug("src6 set to: %s\n", buf); |
222f1806 LC |
1389 | |
1390 | i += len; | |
1da177e4 LT |
1391 | sprintf(pg_result, "OK: src6=%s", buf); |
1392 | return count; | |
1393 | } | |
1394 | if (!strcmp(name, "src_min")) { | |
1395 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
63adc6fb | 1396 | if (len < 0) |
222f1806 | 1397 | return len; |
63adc6fb | 1398 | |
222f1806 | 1399 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1400 | return -EFAULT; |
222f1806 LC |
1401 | buf[len] = 0; |
1402 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1403 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1404 | strncpy(pkt_dev->src_min, buf, len); | |
1405 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1406 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1407 | } | |
1408 | if (debug) | |
f342cda7 | 1409 | pr_debug("src_min set to: %s\n", pkt_dev->src_min); |
1da177e4 LT |
1410 | i += len; |
1411 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1412 | return count; | |
1413 | } | |
1414 | if (!strcmp(name, "src_max")) { | |
1415 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
63adc6fb | 1416 | if (len < 0) |
222f1806 | 1417 | return len; |
63adc6fb | 1418 | |
222f1806 | 1419 | if (copy_from_user(buf, &user_buffer[i], len)) |
1da177e4 | 1420 | return -EFAULT; |
222f1806 LC |
1421 | buf[len] = 0; |
1422 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1423 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1424 | strncpy(pkt_dev->src_max, buf, len); | |
1425 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1426 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1427 | } | |
1428 | if (debug) | |
f342cda7 | 1429 | pr_debug("src_max set to: %s\n", pkt_dev->src_max); |
1da177e4 LT |
1430 | i += len; |
1431 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1432 | return count; | |
1433 | } | |
1434 | if (!strcmp(name, "dst_mac")) { | |
1da177e4 | 1435 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1436 | if (len < 0) |
222f1806 | 1437 | return len; |
63adc6fb | 1438 | |
1da177e4 | 1439 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1440 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1441 | return -EFAULT; |
1da177e4 | 1442 | |
4940fc88 AD |
1443 | if (!mac_pton(valstr, pkt_dev->dst_mac)) |
1444 | return -EINVAL; | |
1da177e4 | 1445 | /* Set up Dest MAC */ |
9ea08b12 | 1446 | ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac); |
222f1806 | 1447 | |
4940fc88 | 1448 | sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac); |
1da177e4 LT |
1449 | return count; |
1450 | } | |
1451 | if (!strcmp(name, "src_mac")) { | |
1da177e4 | 1452 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
63adc6fb | 1453 | if (len < 0) |
222f1806 | 1454 | return len; |
63adc6fb | 1455 | |
1da177e4 | 1456 | memset(valstr, 0, sizeof(valstr)); |
222f1806 | 1457 | if (copy_from_user(valstr, &user_buffer[i], len)) |
1da177e4 | 1458 | return -EFAULT; |
1da177e4 | 1459 | |
4940fc88 AD |
1460 | if (!mac_pton(valstr, pkt_dev->src_mac)) |
1461 | return -EINVAL; | |
ce5d0b47 | 1462 | /* Set up Src MAC */ |
9ea08b12 | 1463 | ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac); |
ce5d0b47 | 1464 | |
4940fc88 | 1465 | sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac); |
1da177e4 LT |
1466 | return count; |
1467 | } | |
1468 | ||
222f1806 LC |
1469 | if (!strcmp(name, "clear_counters")) { |
1470 | pktgen_clear_counters(pkt_dev); | |
1471 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1472 | return count; | |
1473 | } | |
1da177e4 LT |
1474 | |
1475 | if (!strcmp(name, "flows")) { | |
1476 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1477 | if (len < 0) |
222f1806 | 1478 | return len; |
63adc6fb | 1479 | |
1da177e4 LT |
1480 | i += len; |
1481 | if (value > MAX_CFLOWS) | |
1482 | value = MAX_CFLOWS; | |
1483 | ||
1484 | pkt_dev->cflows = value; | |
1485 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1486 | return count; | |
1487 | } | |
6bae9190 | 1488 | #ifdef CONFIG_XFRM |
de4aee7d FD |
1489 | if (!strcmp(name, "spi")) { |
1490 | len = num_arg(&user_buffer[i], 10, &value); | |
1491 | if (len < 0) | |
1492 | return len; | |
1493 | ||
1494 | i += len; | |
1495 | pkt_dev->spi = value; | |
1496 | sprintf(pg_result, "OK: spi=%u", pkt_dev->spi); | |
1497 | return count; | |
1498 | } | |
6bae9190 | 1499 | #endif |
1da177e4 LT |
1500 | if (!strcmp(name, "flowlen")) { |
1501 | len = num_arg(&user_buffer[i], 10, &value); | |
63adc6fb | 1502 | if (len < 0) |
222f1806 | 1503 | return len; |
63adc6fb | 1504 | |
1da177e4 LT |
1505 | i += len; |
1506 | pkt_dev->lflow = value; | |
1507 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1508 | return count; | |
1509 | } | |
222f1806 | 1510 | |
45b270f8 RO |
1511 | if (!strcmp(name, "queue_map_min")) { |
1512 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1513 | if (len < 0) |
45b270f8 | 1514 | return len; |
63adc6fb | 1515 | |
45b270f8 RO |
1516 | i += len; |
1517 | pkt_dev->queue_map_min = value; | |
1518 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1519 | return count; | |
1520 | } | |
1521 | ||
1522 | if (!strcmp(name, "queue_map_max")) { | |
1523 | len = num_arg(&user_buffer[i], 5, &value); | |
63adc6fb | 1524 | if (len < 0) |
45b270f8 | 1525 | return len; |
63adc6fb | 1526 | |
45b270f8 RO |
1527 | i += len; |
1528 | pkt_dev->queue_map_max = value; | |
1529 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1530 | return count; | |
1531 | } | |
1532 | ||
ca6549af | 1533 | if (!strcmp(name, "mpls")) { |
95c96174 | 1534 | unsigned int n, cnt; |
cfcabdcc | 1535 | |
ca6549af | 1536 | len = get_labels(&user_buffer[i], pkt_dev); |
cfcabdcc SH |
1537 | if (len < 0) |
1538 | return len; | |
ca6549af | 1539 | i += len; |
cfcabdcc | 1540 | cnt = sprintf(pg_result, "OK: mpls="); |
e71a4783 | 1541 | for (n = 0; n < pkt_dev->nr_labels; n++) |
cfcabdcc SH |
1542 | cnt += sprintf(pg_result + cnt, |
1543 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1544 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
34954ddc FF |
1545 | |
1546 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1547 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1548 | pkt_dev->svlan_id = 0xffff; | |
1549 | ||
1550 | if (debug) | |
f342cda7 | 1551 | pr_debug("VLAN/SVLAN auto turned off\n"); |
34954ddc FF |
1552 | } |
1553 | return count; | |
1554 | } | |
1555 | ||
1556 | if (!strcmp(name, "vlan_id")) { | |
1557 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1558 | if (len < 0) |
34954ddc | 1559 | return len; |
63adc6fb | 1560 | |
34954ddc FF |
1561 | i += len; |
1562 | if (value <= 4095) { | |
1563 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1564 | ||
1565 | if (debug) | |
f342cda7 | 1566 | pr_debug("VLAN turned on\n"); |
34954ddc FF |
1567 | |
1568 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1569 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1570 | |
1571 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1572 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1573 | } else { | |
1574 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1575 | pkt_dev->svlan_id = 0xffff; | |
1576 | ||
1577 | if (debug) | |
f342cda7 | 1578 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1579 | } |
1580 | return count; | |
1581 | } | |
1582 | ||
1583 | if (!strcmp(name, "vlan_p")) { | |
1584 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1585 | if (len < 0) |
34954ddc | 1586 | return len; |
63adc6fb | 1587 | |
34954ddc FF |
1588 | i += len; |
1589 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1590 | pkt_dev->vlan_p = value; | |
1591 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1592 | } else { | |
1593 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1594 | } | |
1595 | return count; | |
1596 | } | |
1597 | ||
1598 | if (!strcmp(name, "vlan_cfi")) { | |
1599 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1600 | if (len < 0) |
34954ddc | 1601 | return len; |
63adc6fb | 1602 | |
34954ddc FF |
1603 | i += len; |
1604 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1605 | pkt_dev->vlan_cfi = value; | |
1606 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1607 | } else { | |
1608 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1609 | } | |
1610 | return count; | |
1611 | } | |
1612 | ||
1613 | if (!strcmp(name, "svlan_id")) { | |
1614 | len = num_arg(&user_buffer[i], 4, &value); | |
63adc6fb | 1615 | if (len < 0) |
34954ddc | 1616 | return len; |
63adc6fb | 1617 | |
34954ddc FF |
1618 | i += len; |
1619 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1620 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1621 | ||
1622 | if (debug) | |
f342cda7 | 1623 | pr_debug("SVLAN turned on\n"); |
34954ddc FF |
1624 | |
1625 | if (debug && pkt_dev->nr_labels) | |
f342cda7 | 1626 | pr_debug("MPLS auto turned off\n"); |
34954ddc FF |
1627 | |
1628 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1629 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1630 | } else { | |
1631 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1632 | pkt_dev->svlan_id = 0xffff; | |
1633 | ||
1634 | if (debug) | |
f342cda7 | 1635 | pr_debug("VLAN/SVLAN turned off\n"); |
34954ddc FF |
1636 | } |
1637 | return count; | |
1638 | } | |
1639 | ||
1640 | if (!strcmp(name, "svlan_p")) { | |
1641 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1642 | if (len < 0) |
34954ddc | 1643 | return len; |
63adc6fb | 1644 | |
34954ddc FF |
1645 | i += len; |
1646 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1647 | pkt_dev->svlan_p = value; | |
1648 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1649 | } else { | |
1650 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1651 | } | |
1652 | return count; | |
1653 | } | |
1654 | ||
1655 | if (!strcmp(name, "svlan_cfi")) { | |
1656 | len = num_arg(&user_buffer[i], 1, &value); | |
63adc6fb | 1657 | if (len < 0) |
34954ddc | 1658 | return len; |
63adc6fb | 1659 | |
34954ddc FF |
1660 | i += len; |
1661 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1662 | pkt_dev->svlan_cfi = value; | |
1663 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1664 | } else { | |
1665 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1666 | } | |
ca6549af SW |
1667 | return count; |
1668 | } | |
1669 | ||
1ca7768c FF |
1670 | if (!strcmp(name, "tos")) { |
1671 | __u32 tmp_value = 0; | |
1672 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1673 | if (len < 0) |
1ca7768c | 1674 | return len; |
63adc6fb | 1675 | |
1ca7768c FF |
1676 | i += len; |
1677 | if (len == 2) { | |
1678 | pkt_dev->tos = tmp_value; | |
1679 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1680 | } else { | |
1681 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1682 | } | |
1683 | return count; | |
1684 | } | |
1685 | ||
1686 | if (!strcmp(name, "traffic_class")) { | |
1687 | __u32 tmp_value = 0; | |
1688 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
63adc6fb | 1689 | if (len < 0) |
1ca7768c | 1690 | return len; |
63adc6fb | 1691 | |
1ca7768c FF |
1692 | i += len; |
1693 | if (len == 2) { | |
1694 | pkt_dev->traffic_class = tmp_value; | |
1695 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1696 | } else { | |
1697 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1698 | } | |
1699 | return count; | |
1700 | } | |
1701 | ||
9e50e3ac JF |
1702 | if (!strcmp(name, "skb_priority")) { |
1703 | len = num_arg(&user_buffer[i], 9, &value); | |
1704 | if (len < 0) | |
1705 | return len; | |
1706 | ||
1707 | i += len; | |
1708 | pkt_dev->skb_priority = value; | |
1709 | sprintf(pg_result, "OK: skb_priority=%i", | |
1710 | pkt_dev->skb_priority); | |
1711 | return count; | |
1712 | } | |
1713 | ||
1da177e4 LT |
1714 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
1715 | return -EINVAL; | |
1716 | } | |
1717 | ||
d50a6b56 | 1718 | static int pktgen_if_open(struct inode *inode, struct file *file) |
1da177e4 | 1719 | { |
d9dda78b | 1720 | return single_open(file, pktgen_if_show, PDE_DATA(inode)); |
d50a6b56 | 1721 | } |
1da177e4 | 1722 | |
9a32144e | 1723 | static const struct file_operations pktgen_if_fops = { |
222f1806 LC |
1724 | .owner = THIS_MODULE, |
1725 | .open = pktgen_if_open, | |
1726 | .read = seq_read, | |
1727 | .llseek = seq_lseek, | |
1728 | .write = pktgen_if_write, | |
1729 | .release = single_release, | |
d50a6b56 | 1730 | }; |
1da177e4 | 1731 | |
d50a6b56 SH |
1732 | static int pktgen_thread_show(struct seq_file *seq, void *v) |
1733 | { | |
222f1806 | 1734 | struct pktgen_thread *t = seq->private; |
648fda74 | 1735 | const struct pktgen_dev *pkt_dev; |
d50a6b56 SH |
1736 | |
1737 | BUG_ON(!t); | |
1da177e4 | 1738 | |
97dc48e2 | 1739 | seq_puts(seq, "Running: "); |
1da177e4 | 1740 | |
8788370a JDB |
1741 | rcu_read_lock(); |
1742 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
222f1806 | 1743 | if (pkt_dev->running) |
593f63b0 | 1744 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 | 1745 | |
97dc48e2 | 1746 | seq_puts(seq, "\nStopped: "); |
222f1806 | 1747 | |
8788370a | 1748 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) |
222f1806 | 1749 | if (!pkt_dev->running) |
593f63b0 | 1750 | seq_printf(seq, "%s ", pkt_dev->odevname); |
1da177e4 LT |
1751 | |
1752 | if (t->result[0]) | |
d50a6b56 | 1753 | seq_printf(seq, "\nResult: %s\n", t->result); |
1da177e4 | 1754 | else |
97dc48e2 | 1755 | seq_puts(seq, "\nResult: NA\n"); |
1da177e4 | 1756 | |
8788370a | 1757 | rcu_read_unlock(); |
1da177e4 | 1758 | |
d50a6b56 | 1759 | return 0; |
1da177e4 LT |
1760 | } |
1761 | ||
d50a6b56 | 1762 | static ssize_t pktgen_thread_write(struct file *file, |
222f1806 LC |
1763 | const char __user * user_buffer, |
1764 | size_t count, loff_t * offset) | |
1da177e4 | 1765 | { |
8a994a71 | 1766 | struct seq_file *seq = file->private_data; |
222f1806 | 1767 | struct pktgen_thread *t = seq->private; |
d6182223 | 1768 | int i, max, len, ret; |
1da177e4 | 1769 | char name[40]; |
222f1806 | 1770 | char *pg_result; |
d50a6b56 | 1771 | |
1da177e4 | 1772 | if (count < 1) { |
222f1806 | 1773 | // sprintf(pg_result, "Wrong command format"); |
1da177e4 LT |
1774 | return -EINVAL; |
1775 | } | |
d50a6b56 | 1776 | |
d6182223 PG |
1777 | max = count; |
1778 | len = count_trail_chars(user_buffer, max); | |
222f1806 | 1779 | if (len < 0) |
d50a6b56 SH |
1780 | return len; |
1781 | ||
d6182223 | 1782 | i = len; |
d50a6b56 | 1783 | |
1da177e4 LT |
1784 | /* Read variable name */ |
1785 | ||
1786 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
222f1806 | 1787 | if (len < 0) |
d50a6b56 | 1788 | return len; |
222f1806 | 1789 | |
1da177e4 LT |
1790 | memset(name, 0, sizeof(name)); |
1791 | if (copy_from_user(name, &user_buffer[i], len)) | |
1792 | return -EFAULT; | |
1793 | i += len; | |
d50a6b56 | 1794 | |
222f1806 | 1795 | max = count - i; |
1da177e4 | 1796 | len = count_trail_chars(&user_buffer[i], max); |
222f1806 | 1797 | if (len < 0) |
d50a6b56 SH |
1798 | return len; |
1799 | ||
1da177e4 LT |
1800 | i += len; |
1801 | ||
d50a6b56 | 1802 | if (debug) |
f342cda7 | 1803 | pr_debug("t=%s, count=%lu\n", name, (unsigned long)count); |
1da177e4 | 1804 | |
222f1806 | 1805 | if (!t) { |
f9467eae | 1806 | pr_err("ERROR: No thread\n"); |
1da177e4 LT |
1807 | ret = -EINVAL; |
1808 | goto out; | |
1809 | } | |
1810 | ||
1811 | pg_result = &(t->result[0]); | |
1812 | ||
222f1806 LC |
1813 | if (!strcmp(name, "add_device")) { |
1814 | char f[32]; | |
1815 | memset(f, 0, 32); | |
1da177e4 | 1816 | len = strn_len(&user_buffer[i], sizeof(f) - 1); |
222f1806 LC |
1817 | if (len < 0) { |
1818 | ret = len; | |
1da177e4 LT |
1819 | goto out; |
1820 | } | |
222f1806 | 1821 | if (copy_from_user(f, &user_buffer[i], len)) |
1da177e4 LT |
1822 | return -EFAULT; |
1823 | i += len; | |
6146e6a4 | 1824 | mutex_lock(&pktgen_thread_lock); |
604dfd6e | 1825 | ret = pktgen_add_device(t, f); |
6146e6a4 | 1826 | mutex_unlock(&pktgen_thread_lock); |
604dfd6e CW |
1827 | if (!ret) { |
1828 | ret = count; | |
1829 | sprintf(pg_result, "OK: add_device=%s", f); | |
1830 | } else | |
1831 | sprintf(pg_result, "ERROR: can not add device %s", f); | |
1da177e4 LT |
1832 | goto out; |
1833 | } | |
1834 | ||
222f1806 | 1835 | if (!strcmp(name, "rem_device_all")) { |
6146e6a4 | 1836 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 | 1837 | t->control |= T_REMDEVALL; |
6146e6a4 | 1838 | mutex_unlock(&pktgen_thread_lock); |
222f1806 | 1839 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ |
1da177e4 | 1840 | ret = count; |
222f1806 | 1841 | sprintf(pg_result, "OK: rem_device_all"); |
1da177e4 LT |
1842 | goto out; |
1843 | } | |
1844 | ||
222f1806 | 1845 | if (!strcmp(name, "max_before_softirq")) { |
b163911f | 1846 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); |
222f1806 | 1847 | ret = count; |
1da177e4 LT |
1848 | goto out; |
1849 | } | |
1850 | ||
1851 | ret = -EINVAL; | |
222f1806 | 1852 | out: |
1da177e4 LT |
1853 | return ret; |
1854 | } | |
1855 | ||
d50a6b56 | 1856 | static int pktgen_thread_open(struct inode *inode, struct file *file) |
1da177e4 | 1857 | { |
d9dda78b | 1858 | return single_open(file, pktgen_thread_show, PDE_DATA(inode)); |
1da177e4 LT |
1859 | } |
1860 | ||
9a32144e | 1861 | static const struct file_operations pktgen_thread_fops = { |
222f1806 LC |
1862 | .owner = THIS_MODULE, |
1863 | .open = pktgen_thread_open, | |
1864 | .read = seq_read, | |
1865 | .llseek = seq_lseek, | |
1866 | .write = pktgen_thread_write, | |
1867 | .release = single_release, | |
d50a6b56 | 1868 | }; |
1da177e4 LT |
1869 | |
1870 | /* Think find or remove for NN */ | |
4e58a027 CW |
1871 | static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn, |
1872 | const char *ifname, int remove) | |
1da177e4 LT |
1873 | { |
1874 | struct pktgen_thread *t; | |
1875 | struct pktgen_dev *pkt_dev = NULL; | |
3e984840 | 1876 | bool exact = (remove == FIND); |
1da177e4 | 1877 | |
4e58a027 | 1878 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
3e984840 | 1879 | pkt_dev = pktgen_find_dev(t, ifname, exact); |
1da177e4 | 1880 | if (pkt_dev) { |
222f1806 | 1881 | if (remove) { |
222f1806 LC |
1882 | pkt_dev->removal_mark = 1; |
1883 | t->control |= T_REMDEV; | |
222f1806 | 1884 | } |
1da177e4 LT |
1885 | break; |
1886 | } | |
1da177e4 | 1887 | } |
222f1806 | 1888 | return pkt_dev; |
1da177e4 LT |
1889 | } |
1890 | ||
95ed63f7 AK |
1891 | /* |
1892 | * mark a device for removal | |
1893 | */ | |
4e58a027 | 1894 | static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname) |
1da177e4 LT |
1895 | { |
1896 | struct pktgen_dev *pkt_dev = NULL; | |
95ed63f7 AK |
1897 | const int max_tries = 10, msec_per_try = 125; |
1898 | int i = 0; | |
95ed63f7 | 1899 | |
6146e6a4 | 1900 | mutex_lock(&pktgen_thread_lock); |
f9467eae | 1901 | pr_debug("%s: marking %s for removal\n", __func__, ifname); |
95ed63f7 | 1902 | |
222f1806 | 1903 | while (1) { |
95ed63f7 | 1904 | |
4e58a027 | 1905 | pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE); |
222f1806 LC |
1906 | if (pkt_dev == NULL) |
1907 | break; /* success */ | |
95ed63f7 | 1908 | |
6146e6a4 | 1909 | mutex_unlock(&pktgen_thread_lock); |
f9467eae JP |
1910 | pr_debug("%s: waiting for %s to disappear....\n", |
1911 | __func__, ifname); | |
95ed63f7 | 1912 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); |
6146e6a4 | 1913 | mutex_lock(&pktgen_thread_lock); |
95ed63f7 AK |
1914 | |
1915 | if (++i >= max_tries) { | |
f9467eae JP |
1916 | pr_err("%s: timed out after waiting %d msec for device %s to be removed\n", |
1917 | __func__, msec_per_try * i, ifname); | |
95ed63f7 AK |
1918 | break; |
1919 | } | |
1920 | ||
1921 | } | |
1922 | ||
6146e6a4 | 1923 | mutex_unlock(&pktgen_thread_lock); |
39df232f | 1924 | } |
95ed63f7 | 1925 | |
4e58a027 | 1926 | static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev) |
39df232f SH |
1927 | { |
1928 | struct pktgen_thread *t; | |
1929 | ||
4e58a027 | 1930 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
39df232f SH |
1931 | struct pktgen_dev *pkt_dev; |
1932 | ||
8788370a JDB |
1933 | rcu_read_lock(); |
1934 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
39df232f SH |
1935 | if (pkt_dev->odev != dev) |
1936 | continue; | |
1937 | ||
a8ca16ea | 1938 | proc_remove(pkt_dev->entry); |
39df232f | 1939 | |
2975315b | 1940 | pkt_dev->entry = proc_create_data(dev->name, 0600, |
4e58a027 | 1941 | pn->proc_dir, |
2975315b AD |
1942 | &pktgen_if_fops, |
1943 | pkt_dev); | |
39df232f | 1944 | if (!pkt_dev->entry) |
f9467eae JP |
1945 | pr_err("can't move proc entry for '%s'\n", |
1946 | dev->name); | |
39df232f SH |
1947 | break; |
1948 | } | |
8788370a | 1949 | rcu_read_unlock(); |
39df232f | 1950 | } |
1da177e4 LT |
1951 | } |
1952 | ||
222f1806 LC |
1953 | static int pktgen_device_event(struct notifier_block *unused, |
1954 | unsigned long event, void *ptr) | |
1da177e4 | 1955 | { |
351638e7 | 1956 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
4e58a027 | 1957 | struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id); |
1da177e4 | 1958 | |
4e58a027 | 1959 | if (pn->pktgen_exiting) |
e9dc8653 EB |
1960 | return NOTIFY_DONE; |
1961 | ||
1da177e4 LT |
1962 | /* It is OK that we do not hold the group lock right now, |
1963 | * as we run under the RTNL lock. | |
1964 | */ | |
1965 | ||
1966 | switch (event) { | |
39df232f | 1967 | case NETDEV_CHANGENAME: |
4e58a027 | 1968 | pktgen_change_name(pn, dev); |
1da177e4 | 1969 | break; |
222f1806 | 1970 | |
1da177e4 | 1971 | case NETDEV_UNREGISTER: |
4e58a027 | 1972 | pktgen_mark_device(pn, dev->name); |
1da177e4 | 1973 | break; |
3ff50b79 | 1974 | } |
1da177e4 LT |
1975 | |
1976 | return NOTIFY_DONE; | |
1977 | } | |
1978 | ||
4e58a027 CW |
1979 | static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn, |
1980 | struct pktgen_dev *pkt_dev, | |
63adc6fb | 1981 | const char *ifname) |
e6fce5b9 RO |
1982 | { |
1983 | char b[IFNAMSIZ+5]; | |
d6182223 | 1984 | int i; |
e6fce5b9 | 1985 | |
63adc6fb SH |
1986 | for (i = 0; ifname[i] != '@'; i++) { |
1987 | if (i == IFNAMSIZ) | |
e6fce5b9 RO |
1988 | break; |
1989 | ||
1990 | b[i] = ifname[i]; | |
1991 | } | |
1992 | b[i] = 0; | |
1993 | ||
4e58a027 | 1994 | return dev_get_by_name(pn->net, b); |
e6fce5b9 RO |
1995 | } |
1996 | ||
1997 | ||
1da177e4 LT |
1998 | /* Associate pktgen_dev with a device. */ |
1999 | ||
4e58a027 CW |
2000 | static int pktgen_setup_dev(const struct pktgen_net *pn, |
2001 | struct pktgen_dev *pkt_dev, const char *ifname) | |
222f1806 | 2002 | { |
1da177e4 | 2003 | struct net_device *odev; |
39df232f | 2004 | int err; |
1da177e4 LT |
2005 | |
2006 | /* Clean old setups */ | |
1da177e4 LT |
2007 | if (pkt_dev->odev) { |
2008 | dev_put(pkt_dev->odev); | |
222f1806 LC |
2009 | pkt_dev->odev = NULL; |
2010 | } | |
1da177e4 | 2011 | |
4e58a027 | 2012 | odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname); |
1da177e4 | 2013 | if (!odev) { |
f9467eae | 2014 | pr_err("no such netdevice: \"%s\"\n", ifname); |
39df232f | 2015 | return -ENODEV; |
1da177e4 | 2016 | } |
39df232f | 2017 | |
1da177e4 | 2018 | if (odev->type != ARPHRD_ETHER) { |
f9467eae | 2019 | pr_err("not an ethernet device: \"%s\"\n", ifname); |
39df232f SH |
2020 | err = -EINVAL; |
2021 | } else if (!netif_running(odev)) { | |
f9467eae | 2022 | pr_err("device is down: \"%s\"\n", ifname); |
39df232f SH |
2023 | err = -ENETDOWN; |
2024 | } else { | |
2025 | pkt_dev->odev = odev; | |
2026 | return 0; | |
1da177e4 | 2027 | } |
1da177e4 | 2028 | |
1da177e4 | 2029 | dev_put(odev); |
39df232f | 2030 | return err; |
1da177e4 LT |
2031 | } |
2032 | ||
2033 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
2034 | * structure to have the right information to create/send packets | |
2035 | */ | |
2036 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
2037 | { | |
64c00d81 AG |
2038 | int ntxq; |
2039 | ||
222f1806 | 2040 | if (!pkt_dev->odev) { |
f9467eae | 2041 | pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n"); |
222f1806 LC |
2042 | sprintf(pkt_dev->result, |
2043 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
2044 | return; | |
2045 | } | |
2046 | ||
64c00d81 AG |
2047 | /* make sure that we don't pick a non-existing transmit queue */ |
2048 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
bfdbc0ac | 2049 | |
64c00d81 | 2050 | if (ntxq <= pkt_dev->queue_map_min) { |
f9467eae JP |
2051 | pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2052 | pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq, | |
2053 | pkt_dev->odevname); | |
26e29eed | 2054 | pkt_dev->queue_map_min = (ntxq ?: 1) - 1; |
64c00d81 | 2055 | } |
88271660 | 2056 | if (pkt_dev->queue_map_max >= ntxq) { |
f9467eae JP |
2057 | pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n", |
2058 | pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq, | |
2059 | pkt_dev->odevname); | |
26e29eed | 2060 | pkt_dev->queue_map_max = (ntxq ?: 1) - 1; |
64c00d81 AG |
2061 | } |
2062 | ||
222f1806 | 2063 | /* Default to the interface's mac if not explicitly set. */ |
1da177e4 | 2064 | |
f404e9a6 | 2065 | if (is_zero_ether_addr(pkt_dev->src_mac)) |
9ea08b12 | 2066 | ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr); |
1da177e4 | 2067 | |
222f1806 | 2068 | /* Set up Dest MAC */ |
9ea08b12 | 2069 | ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac); |
1da177e4 | 2070 | |
222f1806 | 2071 | if (pkt_dev->flags & F_IPV6) { |
4c139b8c AW |
2072 | int i, set = 0, err = 1; |
2073 | struct inet6_dev *idev; | |
2074 | ||
68bf9f0b AW |
2075 | if (pkt_dev->min_pkt_size == 0) { |
2076 | pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr) | |
2077 | + sizeof(struct udphdr) | |
2078 | + sizeof(struct pktgen_hdr) | |
2079 | + pkt_dev->pkt_overhead; | |
2080 | } | |
2081 | ||
222f1806 LC |
2082 | for (i = 0; i < IN6_ADDR_HSIZE; i++) |
2083 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
1da177e4 LT |
2084 | set = 1; |
2085 | break; | |
2086 | } | |
2087 | ||
222f1806 LC |
2088 | if (!set) { |
2089 | ||
1da177e4 LT |
2090 | /* |
2091 | * Use linklevel address if unconfigured. | |
2092 | * | |
2093 | * use ipv6_get_lladdr if/when it's get exported | |
2094 | */ | |
2095 | ||
8814c4b5 | 2096 | rcu_read_lock(); |
63adc6fb SH |
2097 | idev = __in6_dev_get(pkt_dev->odev); |
2098 | if (idev) { | |
1da177e4 LT |
2099 | struct inet6_ifaddr *ifp; |
2100 | ||
2101 | read_lock_bh(&idev->lock); | |
4c139b8c AW |
2102 | list_for_each_entry(ifp, &idev->addr_list, if_list) { |
2103 | if ((ifp->scope & IFA_LINK) && | |
f64f9e71 | 2104 | !(ifp->flags & IFA_F_TENTATIVE)) { |
4e3fd7a0 | 2105 | pkt_dev->cur_in6_saddr = ifp->addr; |
1da177e4 LT |
2106 | err = 0; |
2107 | break; | |
2108 | } | |
2109 | } | |
2110 | read_unlock_bh(&idev->lock); | |
2111 | } | |
8814c4b5 | 2112 | rcu_read_unlock(); |
222f1806 | 2113 | if (err) |
f9467eae | 2114 | pr_err("ERROR: IPv6 link address not available\n"); |
1da177e4 | 2115 | } |
222f1806 | 2116 | } else { |
68bf9f0b AW |
2117 | if (pkt_dev->min_pkt_size == 0) { |
2118 | pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr) | |
2119 | + sizeof(struct udphdr) | |
2120 | + sizeof(struct pktgen_hdr) | |
2121 | + pkt_dev->pkt_overhead; | |
2122 | } | |
2123 | ||
1da177e4 LT |
2124 | pkt_dev->saddr_min = 0; |
2125 | pkt_dev->saddr_max = 0; | |
2126 | if (strlen(pkt_dev->src_min) == 0) { | |
222f1806 LC |
2127 | |
2128 | struct in_device *in_dev; | |
1da177e4 LT |
2129 | |
2130 | rcu_read_lock(); | |
e5ed6399 | 2131 | in_dev = __in_dev_get_rcu(pkt_dev->odev); |
1da177e4 LT |
2132 | if (in_dev) { |
2133 | if (in_dev->ifa_list) { | |
222f1806 LC |
2134 | pkt_dev->saddr_min = |
2135 | in_dev->ifa_list->ifa_address; | |
1da177e4 LT |
2136 | pkt_dev->saddr_max = pkt_dev->saddr_min; |
2137 | } | |
1da177e4 LT |
2138 | } |
2139 | rcu_read_unlock(); | |
222f1806 | 2140 | } else { |
1da177e4 LT |
2141 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); |
2142 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2143 | } | |
2144 | ||
2145 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2146 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2147 | } | |
222f1806 | 2148 | /* Initialize current values. */ |
68bf9f0b AW |
2149 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; |
2150 | if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size) | |
2151 | pkt_dev->max_pkt_size = pkt_dev->min_pkt_size; | |
2152 | ||
222f1806 LC |
2153 | pkt_dev->cur_dst_mac_offset = 0; |
2154 | pkt_dev->cur_src_mac_offset = 0; | |
2155 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2156 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2157 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2158 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
1da177e4 LT |
2159 | pkt_dev->nflows = 0; |
2160 | } | |
2161 | ||
fd29cf72 SH |
2162 | |
2163 | static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until) | |
2164 | { | |
ef87979c | 2165 | ktime_t start_time, end_time; |
417bc4b8 | 2166 | s64 remaining; |
2bc481cf SH |
2167 | struct hrtimer_sleeper t; |
2168 | ||
2169 | hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); | |
2170 | hrtimer_set_expires(&t.timer, spin_until); | |
2171 | ||
43d28b65 | 2172 | remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer)); |
417bc4b8 ED |
2173 | if (remaining <= 0) { |
2174 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); | |
2bc481cf | 2175 | return; |
417bc4b8 | 2176 | } |
2bc481cf | 2177 | |
398f382c | 2178 | start_time = ktime_get(); |
33136d12 ED |
2179 | if (remaining < 100000) { |
2180 | /* for small delays (<100us), just loop until limit is reached */ | |
2181 | do { | |
398f382c DB |
2182 | end_time = ktime_get(); |
2183 | } while (ktime_compare(end_time, spin_until) < 0); | |
33136d12 | 2184 | } else { |
2bc481cf SH |
2185 | /* see do_nanosleep */ |
2186 | hrtimer_init_sleeper(&t, current); | |
2187 | do { | |
2188 | set_current_state(TASK_INTERRUPTIBLE); | |
2189 | hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); | |
2190 | if (!hrtimer_active(&t.timer)) | |
2191 | t.task = NULL; | |
2192 | ||
2193 | if (likely(t.task)) | |
1da177e4 | 2194 | schedule(); |
1da177e4 | 2195 | |
2bc481cf SH |
2196 | hrtimer_cancel(&t.timer); |
2197 | } while (t.task && pkt_dev->running && !signal_pending(current)); | |
2198 | __set_current_state(TASK_RUNNING); | |
398f382c | 2199 | end_time = ktime_get(); |
1da177e4 | 2200 | } |
ef87979c SH |
2201 | |
2202 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time)); | |
07a0f0f0 | 2203 | pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay); |
1da177e4 LT |
2204 | } |
2205 | ||
16dab72f JHS |
2206 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) |
2207 | { | |
a553e4a6 | 2208 | pkt_dev->pkt_overhead = 0; |
16dab72f JHS |
2209 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); |
2210 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2211 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2212 | } | |
2213 | ||
648fda74 | 2214 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) |
007a531b | 2215 | { |
648fda74 | 2216 | return !!(pkt_dev->flows[flow].flags & F_INIT); |
007a531b JHS |
2217 | } |
2218 | ||
2219 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2220 | { | |
2221 | int flow = pkt_dev->curfl; | |
2222 | ||
2223 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2224 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2225 | /* reset time */ | |
2226 | pkt_dev->flows[flow].count = 0; | |
1211a645 | 2227 | pkt_dev->flows[flow].flags = 0; |
007a531b JHS |
2228 | pkt_dev->curfl += 1; |
2229 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2230 | pkt_dev->curfl = 0; /*reset */ | |
2231 | } | |
2232 | } else { | |
33d7c5e5 | 2233 | flow = prandom_u32() % pkt_dev->cflows; |
1211a645 | 2234 | pkt_dev->curfl = flow; |
007a531b | 2235 | |
1211a645 | 2236 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { |
007a531b | 2237 | pkt_dev->flows[flow].count = 0; |
1211a645 RO |
2238 | pkt_dev->flows[flow].flags = 0; |
2239 | } | |
007a531b JHS |
2240 | } |
2241 | ||
2242 | return pkt_dev->curfl; | |
2243 | } | |
2244 | ||
a553e4a6 JHS |
2245 | |
2246 | #ifdef CONFIG_XFRM | |
2247 | /* If there was already an IPSEC SA, we keep it as is, else | |
2248 | * we go look for it ... | |
2249 | */ | |
bd55775c | 2250 | #define DUMMY_MARK 0 |
fea1ab0f | 2251 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) |
a553e4a6 JHS |
2252 | { |
2253 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
4e58a027 | 2254 | struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id); |
a553e4a6 | 2255 | if (!x) { |
c454997e FD |
2256 | |
2257 | if (pkt_dev->spi) { | |
2258 | /* We need as quick as possible to find the right SA | |
2259 | * Searching with minimum criteria to archieve this. | |
2260 | */ | |
2261 | x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET); | |
2262 | } else { | |
2263 | /* slow path: we dont already have xfrm_state */ | |
2264 | x = xfrm_stateonly_find(pn->net, DUMMY_MARK, | |
2265 | (xfrm_address_t *)&pkt_dev->cur_daddr, | |
2266 | (xfrm_address_t *)&pkt_dev->cur_saddr, | |
2267 | AF_INET, | |
2268 | pkt_dev->ipsmode, | |
2269 | pkt_dev->ipsproto, 0); | |
2270 | } | |
a553e4a6 JHS |
2271 | if (x) { |
2272 | pkt_dev->flows[flow].x = x; | |
2273 | set_pkt_overhead(pkt_dev); | |
63adc6fb | 2274 | pkt_dev->pkt_overhead += x->props.header_len; |
a553e4a6 JHS |
2275 | } |
2276 | ||
2277 | } | |
2278 | } | |
2279 | #endif | |
fd2ea0a7 DM |
2280 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) |
2281 | { | |
e6fce5b9 RO |
2282 | |
2283 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2284 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2285 | ||
896a7cf8 | 2286 | else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) { |
fd2ea0a7 DM |
2287 | __u16 t; |
2288 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
33d7c5e5 | 2289 | t = prandom_u32() % |
fd2ea0a7 DM |
2290 | (pkt_dev->queue_map_max - |
2291 | pkt_dev->queue_map_min + 1) | |
2292 | + pkt_dev->queue_map_min; | |
2293 | } else { | |
2294 | t = pkt_dev->cur_queue_map + 1; | |
2295 | if (t > pkt_dev->queue_map_max) | |
2296 | t = pkt_dev->queue_map_min; | |
2297 | } | |
2298 | pkt_dev->cur_queue_map = t; | |
2299 | } | |
bfdbc0ac | 2300 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; |
fd2ea0a7 DM |
2301 | } |
2302 | ||
1da177e4 LT |
2303 | /* Increment/randomize headers according to flags and current values |
2304 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2305 | */ | |
222f1806 LC |
2306 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) |
2307 | { | |
2308 | __u32 imn; | |
2309 | __u32 imx; | |
2310 | int flow = 0; | |
1da177e4 | 2311 | |
007a531b JHS |
2312 | if (pkt_dev->cflows) |
2313 | flow = f_pick(pkt_dev); | |
1da177e4 LT |
2314 | |
2315 | /* Deal with source MAC */ | |
222f1806 LC |
2316 | if (pkt_dev->src_mac_count > 1) { |
2317 | __u32 mc; | |
2318 | __u32 tmp; | |
2319 | ||
2320 | if (pkt_dev->flags & F_MACSRC_RND) | |
33d7c5e5 | 2321 | mc = prandom_u32() % pkt_dev->src_mac_count; |
222f1806 LC |
2322 | else { |
2323 | mc = pkt_dev->cur_src_mac_offset++; | |
ff2a79a5 | 2324 | if (pkt_dev->cur_src_mac_offset >= |
222f1806 LC |
2325 | pkt_dev->src_mac_count) |
2326 | pkt_dev->cur_src_mac_offset = 0; | |
2327 | } | |
2328 | ||
2329 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2330 | pkt_dev->hh[11] = tmp; | |
2331 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2332 | pkt_dev->hh[10] = tmp; | |
2333 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2334 | pkt_dev->hh[9] = tmp; | |
2335 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2336 | pkt_dev->hh[8] = tmp; | |
2337 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2338 | pkt_dev->hh[7] = tmp; | |
2339 | } | |
2340 | ||
2341 | /* Deal with Destination MAC */ | |
2342 | if (pkt_dev->dst_mac_count > 1) { | |
2343 | __u32 mc; | |
2344 | __u32 tmp; | |
2345 | ||
2346 | if (pkt_dev->flags & F_MACDST_RND) | |
33d7c5e5 | 2347 | mc = prandom_u32() % pkt_dev->dst_mac_count; |
222f1806 LC |
2348 | |
2349 | else { | |
2350 | mc = pkt_dev->cur_dst_mac_offset++; | |
ff2a79a5 | 2351 | if (pkt_dev->cur_dst_mac_offset >= |
222f1806 LC |
2352 | pkt_dev->dst_mac_count) { |
2353 | pkt_dev->cur_dst_mac_offset = 0; | |
2354 | } | |
2355 | } | |
2356 | ||
2357 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2358 | pkt_dev->hh[5] = tmp; | |
2359 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2360 | pkt_dev->hh[4] = tmp; | |
2361 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2362 | pkt_dev->hh[3] = tmp; | |
2363 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2364 | pkt_dev->hh[2] = tmp; | |
2365 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2366 | pkt_dev->hh[1] = tmp; | |
2367 | } | |
2368 | ||
ca6549af | 2369 | if (pkt_dev->flags & F_MPLS_RND) { |
95c96174 | 2370 | unsigned int i; |
e71a4783 | 2371 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af SW |
2372 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) |
2373 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
33d7c5e5 | 2374 | ((__force __be32)prandom_u32() & |
ca6549af SW |
2375 | htonl(0x000fffff)); |
2376 | } | |
2377 | ||
34954ddc | 2378 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { |
33d7c5e5 | 2379 | pkt_dev->vlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2380 | } |
2381 | ||
2382 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
33d7c5e5 | 2383 | pkt_dev->svlan_id = prandom_u32() & (4096 - 1); |
34954ddc FF |
2384 | } |
2385 | ||
222f1806 LC |
2386 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { |
2387 | if (pkt_dev->flags & F_UDPSRC_RND) | |
33d7c5e5 | 2388 | pkt_dev->cur_udp_src = prandom_u32() % |
5fa6fc76 SH |
2389 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) |
2390 | + pkt_dev->udp_src_min; | |
222f1806 LC |
2391 | |
2392 | else { | |
1da177e4 LT |
2393 | pkt_dev->cur_udp_src++; |
2394 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2395 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
222f1806 LC |
2396 | } |
2397 | } | |
2398 | ||
2399 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2400 | if (pkt_dev->flags & F_UDPDST_RND) { | |
33d7c5e5 | 2401 | pkt_dev->cur_udp_dst = prandom_u32() % |
5fa6fc76 SH |
2402 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) |
2403 | + pkt_dev->udp_dst_min; | |
222f1806 | 2404 | } else { |
1da177e4 | 2405 | pkt_dev->cur_udp_dst++; |
222f1806 | 2406 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) |
1da177e4 | 2407 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; |
222f1806 LC |
2408 | } |
2409 | } | |
1da177e4 LT |
2410 | |
2411 | if (!(pkt_dev->flags & F_IPV6)) { | |
2412 | ||
63adc6fb SH |
2413 | imn = ntohl(pkt_dev->saddr_min); |
2414 | imx = ntohl(pkt_dev->saddr_max); | |
2415 | if (imn < imx) { | |
1da177e4 | 2416 | __u32 t; |
222f1806 | 2417 | if (pkt_dev->flags & F_IPSRC_RND) |
33d7c5e5 | 2418 | t = prandom_u32() % (imx - imn) + imn; |
1da177e4 LT |
2419 | else { |
2420 | t = ntohl(pkt_dev->cur_saddr); | |
2421 | t++; | |
63adc6fb | 2422 | if (t > imx) |
1da177e4 | 2423 | t = imn; |
63adc6fb | 2424 | |
1da177e4 LT |
2425 | } |
2426 | pkt_dev->cur_saddr = htonl(t); | |
2427 | } | |
222f1806 | 2428 | |
007a531b | 2429 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { |
1da177e4 LT |
2430 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; |
2431 | } else { | |
252e3346 AV |
2432 | imn = ntohl(pkt_dev->daddr_min); |
2433 | imx = ntohl(pkt_dev->daddr_max); | |
2434 | if (imn < imx) { | |
1da177e4 | 2435 | __u32 t; |
252e3346 | 2436 | __be32 s; |
1da177e4 LT |
2437 | if (pkt_dev->flags & F_IPDST_RND) { |
2438 | ||
70e3ba72 | 2439 | do { |
33d7c5e5 AM |
2440 | t = prandom_u32() % |
2441 | (imx - imn) + imn; | |
252e3346 | 2442 | s = htonl(t); |
70e3ba72 AM |
2443 | } while (ipv4_is_loopback(s) || |
2444 | ipv4_is_multicast(s) || | |
2445 | ipv4_is_lbcast(s) || | |
2446 | ipv4_is_zeronet(s) || | |
2447 | ipv4_is_local_multicast(s)); | |
252e3346 AV |
2448 | pkt_dev->cur_daddr = s; |
2449 | } else { | |
1da177e4 LT |
2450 | t = ntohl(pkt_dev->cur_daddr); |
2451 | t++; | |
2452 | if (t > imx) { | |
2453 | t = imn; | |
2454 | } | |
2455 | pkt_dev->cur_daddr = htonl(t); | |
2456 | } | |
2457 | } | |
222f1806 | 2458 | if (pkt_dev->cflows) { |
007a531b | 2459 | pkt_dev->flows[flow].flags |= F_INIT; |
222f1806 LC |
2460 | pkt_dev->flows[flow].cur_daddr = |
2461 | pkt_dev->cur_daddr; | |
a553e4a6 JHS |
2462 | #ifdef CONFIG_XFRM |
2463 | if (pkt_dev->flags & F_IPSEC_ON) | |
2464 | get_ipsec_sa(pkt_dev, flow); | |
2465 | #endif | |
1da177e4 LT |
2466 | pkt_dev->nflows++; |
2467 | } | |
2468 | } | |
222f1806 LC |
2469 | } else { /* IPV6 * */ |
2470 | ||
06e30411 | 2471 | if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) { |
1da177e4 LT |
2472 | int i; |
2473 | ||
2474 | /* Only random destinations yet */ | |
2475 | ||
222f1806 | 2476 | for (i = 0; i < 4; i++) { |
1da177e4 | 2477 | pkt_dev->cur_in6_daddr.s6_addr32[i] = |
33d7c5e5 | 2478 | (((__force __be32)prandom_u32() | |
222f1806 LC |
2479 | pkt_dev->min_in6_daddr.s6_addr32[i]) & |
2480 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
1da177e4 | 2481 | } |
222f1806 | 2482 | } |
1da177e4 LT |
2483 | } |
2484 | ||
222f1806 LC |
2485 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { |
2486 | __u32 t; | |
2487 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
33d7c5e5 | 2488 | t = prandom_u32() % |
5fa6fc76 SH |
2489 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) |
2490 | + pkt_dev->min_pkt_size; | |
222f1806 | 2491 | } else { |
1da177e4 | 2492 | t = pkt_dev->cur_pkt_size + 1; |
222f1806 | 2493 | if (t > pkt_dev->max_pkt_size) |
1da177e4 | 2494 | t = pkt_dev->min_pkt_size; |
222f1806 LC |
2495 | } |
2496 | pkt_dev->cur_pkt_size = t; | |
2497 | } | |
1da177e4 | 2498 | |
fd2ea0a7 | 2499 | set_cur_queue_map(pkt_dev); |
45b270f8 | 2500 | |
1da177e4 LT |
2501 | pkt_dev->flows[flow].count++; |
2502 | } | |
2503 | ||
a553e4a6 JHS |
2504 | |
2505 | #ifdef CONFIG_XFRM | |
5537a055 | 2506 | static u32 pktgen_dst_metrics[RTAX_MAX + 1] = { |
cf93d47e FD |
2507 | |
2508 | [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */ | |
2509 | }; | |
2510 | ||
a553e4a6 JHS |
2511 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) |
2512 | { | |
2513 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2514 | int err = 0; | |
6de9ace4 | 2515 | struct net *net = dev_net(pkt_dev->odev); |
a553e4a6 JHS |
2516 | |
2517 | if (!x) | |
2518 | return 0; | |
2519 | /* XXX: we dont support tunnel mode for now until | |
2520 | * we resolve the dst issue */ | |
cf93d47e | 2521 | if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0)) |
a553e4a6 JHS |
2522 | return 0; |
2523 | ||
cf93d47e FD |
2524 | /* But when user specify an valid SPI, transformation |
2525 | * supports both transport/tunnel mode + ESP/AH type. | |
2526 | */ | |
2527 | if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0)) | |
2528 | skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF; | |
2529 | ||
2530 | rcu_read_lock_bh(); | |
13996378 | 2531 | err = x->outer_mode->output(x, skb); |
cf93d47e | 2532 | rcu_read_unlock_bh(); |
6de9ace4 FD |
2533 | if (err) { |
2534 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR); | |
a553e4a6 | 2535 | goto error; |
6de9ace4 | 2536 | } |
a553e4a6 | 2537 | err = x->type->output(x, skb); |
6de9ace4 FD |
2538 | if (err) { |
2539 | XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR); | |
a553e4a6 | 2540 | goto error; |
6de9ace4 | 2541 | } |
0af0a413 | 2542 | spin_lock_bh(&x->lock); |
63adc6fb | 2543 | x->curlft.bytes += skb->len; |
a553e4a6 | 2544 | x->curlft.packets++; |
0af0a413 | 2545 | spin_unlock_bh(&x->lock); |
a553e4a6 | 2546 | error: |
a553e4a6 JHS |
2547 | return err; |
2548 | } | |
2549 | ||
475ac1e4 | 2550 | static void free_SAs(struct pktgen_dev *pkt_dev) |
a553e4a6 JHS |
2551 | { |
2552 | if (pkt_dev->cflows) { | |
2553 | /* let go of the SAs if we have them */ | |
d6182223 PG |
2554 | int i; |
2555 | for (i = 0; i < pkt_dev->cflows; i++) { | |
a553e4a6 JHS |
2556 | struct xfrm_state *x = pkt_dev->flows[i].x; |
2557 | if (x) { | |
2558 | xfrm_state_put(x); | |
2559 | pkt_dev->flows[i].x = NULL; | |
2560 | } | |
2561 | } | |
2562 | } | |
2563 | } | |
2564 | ||
475ac1e4 | 2565 | static int process_ipsec(struct pktgen_dev *pkt_dev, |
a553e4a6 JHS |
2566 | struct sk_buff *skb, __be16 protocol) |
2567 | { | |
2568 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2569 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2570 | int nhead = 0; | |
2571 | if (x) { | |
2572 | int ret; | |
2573 | __u8 *eth; | |
3868204d | 2574 | struct iphdr *iph; |
2575 | ||
a553e4a6 | 2576 | nhead = x->props.header_len - skb_headroom(skb); |
63adc6fb | 2577 | if (nhead > 0) { |
a553e4a6 JHS |
2578 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); |
2579 | if (ret < 0) { | |
f9467eae JP |
2580 | pr_err("Error expanding ipsec packet %d\n", |
2581 | ret); | |
b4bb4ac8 | 2582 | goto err; |
a553e4a6 JHS |
2583 | } |
2584 | } | |
2585 | ||
2586 | /* ipsec is not expecting ll header */ | |
2587 | skb_pull(skb, ETH_HLEN); | |
2588 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2589 | if (ret) { | |
f9467eae | 2590 | pr_err("Error creating ipsec packet %d\n", ret); |
b4bb4ac8 | 2591 | goto err; |
a553e4a6 JHS |
2592 | } |
2593 | /* restore ll */ | |
2594 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2595 | memcpy(eth, pkt_dev->hh, 12); | |
63adc6fb | 2596 | *(u16 *) ð[12] = protocol; |
3868204d | 2597 | |
2598 | /* Update IPv4 header len as well as checksum value */ | |
2599 | iph = ip_hdr(skb); | |
2600 | iph->tot_len = htons(skb->len - ETH_HLEN); | |
2601 | ip_send_check(iph); | |
a553e4a6 JHS |
2602 | } |
2603 | } | |
2604 | return 1; | |
b4bb4ac8 IJ |
2605 | err: |
2606 | kfree_skb(skb); | |
2607 | return 0; | |
a553e4a6 JHS |
2608 | } |
2609 | #endif | |
2610 | ||
ca6549af SW |
2611 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) |
2612 | { | |
95c96174 | 2613 | unsigned int i; |
63adc6fb | 2614 | for (i = 0; i < pkt_dev->nr_labels; i++) |
ca6549af | 2615 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; |
63adc6fb | 2616 | |
ca6549af SW |
2617 | mpls--; |
2618 | *mpls |= MPLS_STACK_BOTTOM; | |
2619 | } | |
2620 | ||
0f37c605 AV |
2621 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, |
2622 | unsigned int prio) | |
2623 | { | |
2624 | return htons(id | (cfi << 12) | (prio << 13)); | |
2625 | } | |
2626 | ||
26ad7879 ED |
2627 | static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb, |
2628 | int datalen) | |
2629 | { | |
2630 | struct timeval timestamp; | |
2631 | struct pktgen_hdr *pgh; | |
2632 | ||
2633 | pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh)); | |
2634 | datalen -= sizeof(*pgh); | |
2635 | ||
2636 | if (pkt_dev->nfrags <= 0) { | |
05aebe2e | 2637 | memset(skb_put(skb, datalen), 0, datalen); |
26ad7879 ED |
2638 | } else { |
2639 | int frags = pkt_dev->nfrags; | |
2640 | int i, len; | |
7d36a991 | 2641 | int frag_len; |
26ad7879 ED |
2642 | |
2643 | ||
2644 | if (frags > MAX_SKB_FRAGS) | |
2645 | frags = MAX_SKB_FRAGS; | |
2646 | len = datalen - frags * PAGE_SIZE; | |
2647 | if (len > 0) { | |
2648 | memset(skb_put(skb, len), 0, len); | |
2649 | datalen = frags * PAGE_SIZE; | |
2650 | } | |
2651 | ||
2652 | i = 0; | |
7d36a991 | 2653 | frag_len = (datalen/frags) < PAGE_SIZE ? |
2654 | (datalen/frags) : PAGE_SIZE; | |
26ad7879 ED |
2655 | while (datalen > 0) { |
2656 | if (unlikely(!pkt_dev->page)) { | |
2657 | int node = numa_node_id(); | |
2658 | ||
2659 | if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE)) | |
2660 | node = pkt_dev->node; | |
2661 | pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0); | |
2662 | if (!pkt_dev->page) | |
2663 | break; | |
2664 | } | |
a0bec1cd | 2665 | get_page(pkt_dev->page); |
ea2ab693 | 2666 | skb_frag_set_page(skb, i, pkt_dev->page); |
26ad7879 | 2667 | skb_shinfo(skb)->frags[i].page_offset = 0; |
7d36a991 | 2668 | /*last fragment, fill rest of data*/ |
2669 | if (i == (frags - 1)) | |
9e903e08 ED |
2670 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], |
2671 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE)); | |
7d36a991 | 2672 | else |
9e903e08 ED |
2673 | skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len); |
2674 | datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2675 | skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
2676 | skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]); | |
26ad7879 ED |
2677 | i++; |
2678 | skb_shinfo(skb)->nr_frags = i; | |
2679 | } | |
26ad7879 ED |
2680 | } |
2681 | ||
2682 | /* Stamp the time, and sequence number, | |
2683 | * convert them to network byte order | |
2684 | */ | |
2685 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2686 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2687 | ||
2688 | do_gettimeofday(×tamp); | |
2689 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2690 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2691 | } | |
2692 | ||
7a6e288d DB |
2693 | static struct sk_buff *pktgen_alloc_skb(struct net_device *dev, |
2694 | struct pktgen_dev *pkt_dev, | |
2695 | unsigned int extralen) | |
2696 | { | |
2697 | struct sk_buff *skb = NULL; | |
2698 | unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen + | |
2699 | pkt_dev->pkt_overhead; | |
2700 | ||
2701 | if (pkt_dev->flags & F_NODE) { | |
2702 | int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id(); | |
2703 | ||
2704 | skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node); | |
2705 | if (likely(skb)) { | |
2706 | skb_reserve(skb, NET_SKB_PAD); | |
2707 | skb->dev = dev; | |
2708 | } | |
2709 | } else { | |
2710 | skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT); | |
2711 | } | |
2712 | ||
2713 | return skb; | |
2714 | } | |
2715 | ||
222f1806 LC |
2716 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, |
2717 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2718 | { |
2719 | struct sk_buff *skb = NULL; | |
2720 | __u8 *eth; | |
2721 | struct udphdr *udph; | |
2722 | int datalen, iplen; | |
2723 | struct iphdr *iph; | |
d5f1ce9a | 2724 | __be16 protocol = htons(ETH_P_IP); |
ca6549af | 2725 | __be32 *mpls; |
34954ddc FF |
2726 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2727 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2728 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2729 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2730 | u16 queue_map; |
ca6549af SW |
2731 | |
2732 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2733 | protocol = htons(ETH_P_MPLS_UC); |
222f1806 | 2734 | |
34954ddc | 2735 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2736 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2737 | |
64053bee RO |
2738 | /* Update any of the values, used when we're incrementing various |
2739 | * fields. | |
2740 | */ | |
2741 | mod_cur_headers(pkt_dev); | |
eb589063 | 2742 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2743 | |
7ac5459e | 2744 | datalen = (odev->hard_header_len + 16) & ~0xf; |
e99b99b4 | 2745 | |
7a6e288d | 2746 | skb = pktgen_alloc_skb(odev, pkt_dev, datalen); |
1da177e4 LT |
2747 | if (!skb) { |
2748 | sprintf(pkt_dev->result, "No memory"); | |
2749 | return NULL; | |
2750 | } | |
2751 | ||
7a6e288d | 2752 | prefetchw(skb->data); |
7ac5459e | 2753 | skb_reserve(skb, datalen); |
1da177e4 LT |
2754 | |
2755 | /* Reserve for ethernet and IP header */ | |
2756 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2757 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2758 | if (pkt_dev->nr_labels) | |
2759 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2760 | |
2761 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2762 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2763 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2764 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2765 | pkt_dev->svlan_cfi, | |
2766 | pkt_dev->svlan_p); | |
34954ddc | 2767 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2768 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2769 | } |
2770 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2771 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2772 | pkt_dev->vlan_cfi, | |
2773 | pkt_dev->vlan_p); | |
34954ddc | 2774 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2775 | *vlan_encapsulated_proto = htons(ETH_P_IP); |
34954ddc FF |
2776 | } |
2777 | ||
525cebed TG |
2778 | skb_set_mac_header(skb, 0); |
2779 | skb_set_network_header(skb, skb->len); | |
2780 | iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr)); | |
2781 | ||
2782 | skb_set_transport_header(skb, skb->len); | |
2783 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2784 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac JF |
2785 | skb->priority = pkt_dev->skb_priority; |
2786 | ||
1da177e4 | 2787 | memcpy(eth, pkt_dev->hh, 12); |
252e3346 | 2788 | *(__be16 *) & eth[12] = protocol; |
1da177e4 | 2789 | |
ca6549af SW |
2790 | /* Eth + IPh + UDPh + mpls */ |
2791 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
16dab72f | 2792 | pkt_dev->pkt_overhead; |
6af773e7 | 2793 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) |
1da177e4 | 2794 | datalen = sizeof(struct pktgen_hdr); |
222f1806 | 2795 | |
1da177e4 LT |
2796 | udph->source = htons(pkt_dev->cur_udp_src); |
2797 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
222f1806 | 2798 | udph->len = htons(datalen + 8); /* DATA + udphdr */ |
c26bf4a5 | 2799 | udph->check = 0; |
1da177e4 LT |
2800 | |
2801 | iph->ihl = 5; | |
2802 | iph->version = 4; | |
2803 | iph->ttl = 32; | |
1ca7768c | 2804 | iph->tos = pkt_dev->tos; |
222f1806 | 2805 | iph->protocol = IPPROTO_UDP; /* UDP */ |
1da177e4 LT |
2806 | iph->saddr = pkt_dev->cur_saddr; |
2807 | iph->daddr = pkt_dev->cur_daddr; | |
66ed1e5e ED |
2808 | iph->id = htons(pkt_dev->ip_id); |
2809 | pkt_dev->ip_id++; | |
1da177e4 LT |
2810 | iph->frag_off = 0; |
2811 | iplen = 20 + 8 + datalen; | |
2812 | iph->tot_len = htons(iplen); | |
03c633e7 | 2813 | ip_send_check(iph); |
ca6549af | 2814 | skb->protocol = protocol; |
1da177e4 LT |
2815 | skb->dev = odev; |
2816 | skb->pkt_type = PACKET_HOST; | |
c26bf4a5 TG |
2817 | |
2818 | if (!(pkt_dev->flags & F_UDPCSUM)) { | |
2819 | skb->ip_summed = CHECKSUM_NONE; | |
2820 | } else if (odev->features & NETIF_F_V4_CSUM) { | |
2821 | skb->ip_summed = CHECKSUM_PARTIAL; | |
2822 | skb->csum = 0; | |
2823 | udp4_hwcsum(skb, udph->source, udph->dest); | |
2824 | } else { | |
2825 | __wsum csum = udp_csum(skb); | |
2826 | ||
2827 | /* add protocol-dependent pseudo-header */ | |
2828 | udph->check = csum_tcpudp_magic(udph->source, udph->dest, | |
2829 | datalen + 8, IPPROTO_UDP, csum); | |
2830 | ||
2831 | if (udph->check == 0) | |
2832 | udph->check = CSUM_MANGLED_0; | |
2833 | } | |
2834 | ||
26ad7879 | 2835 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
1da177e4 | 2836 | |
a553e4a6 JHS |
2837 | #ifdef CONFIG_XFRM |
2838 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2839 | return NULL; | |
2840 | #endif | |
2841 | ||
1da177e4 LT |
2842 | return skb; |
2843 | } | |
2844 | ||
222f1806 LC |
2845 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, |
2846 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
2847 | { |
2848 | struct sk_buff *skb = NULL; | |
2849 | __u8 *eth; | |
2850 | struct udphdr *udph; | |
c26bf4a5 | 2851 | int datalen, udplen; |
1da177e4 | 2852 | struct ipv6hdr *iph; |
d5f1ce9a | 2853 | __be16 protocol = htons(ETH_P_IPV6); |
ca6549af | 2854 | __be32 *mpls; |
34954ddc FF |
2855 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ |
2856 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2857 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2858 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
fd2ea0a7 | 2859 | u16 queue_map; |
ca6549af SW |
2860 | |
2861 | if (pkt_dev->nr_labels) | |
d5f1ce9a | 2862 | protocol = htons(ETH_P_MPLS_UC); |
64053bee | 2863 | |
34954ddc | 2864 | if (pkt_dev->vlan_id != 0xffff) |
d5f1ce9a | 2865 | protocol = htons(ETH_P_8021Q); |
34954ddc | 2866 | |
64053bee RO |
2867 | /* Update any of the values, used when we're incrementing various |
2868 | * fields. | |
2869 | */ | |
2870 | mod_cur_headers(pkt_dev); | |
eb589063 | 2871 | queue_map = pkt_dev->cur_queue_map; |
64053bee | 2872 | |
7a6e288d | 2873 | skb = pktgen_alloc_skb(odev, pkt_dev, 16); |
1da177e4 LT |
2874 | if (!skb) { |
2875 | sprintf(pkt_dev->result, "No memory"); | |
2876 | return NULL; | |
2877 | } | |
2878 | ||
7a6e288d | 2879 | prefetchw(skb->data); |
1da177e4 LT |
2880 | skb_reserve(skb, 16); |
2881 | ||
2882 | /* Reserve for ethernet and IP header */ | |
2883 | eth = (__u8 *) skb_push(skb, 14); | |
ca6549af SW |
2884 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); |
2885 | if (pkt_dev->nr_labels) | |
2886 | mpls_push(mpls, pkt_dev); | |
34954ddc FF |
2887 | |
2888 | if (pkt_dev->vlan_id != 0xffff) { | |
e71a4783 | 2889 | if (pkt_dev->svlan_id != 0xffff) { |
34954ddc | 2890 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); |
0f37c605 AV |
2891 | *svlan_tci = build_tci(pkt_dev->svlan_id, |
2892 | pkt_dev->svlan_cfi, | |
2893 | pkt_dev->svlan_p); | |
34954ddc | 2894 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2895 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); |
34954ddc FF |
2896 | } |
2897 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
0f37c605 AV |
2898 | *vlan_tci = build_tci(pkt_dev->vlan_id, |
2899 | pkt_dev->vlan_cfi, | |
2900 | pkt_dev->vlan_p); | |
34954ddc | 2901 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); |
d5f1ce9a | 2902 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); |
34954ddc FF |
2903 | } |
2904 | ||
525cebed TG |
2905 | skb_set_mac_header(skb, 0); |
2906 | skb_set_network_header(skb, skb->len); | |
2907 | iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr)); | |
2908 | ||
2909 | skb_set_transport_header(skb, skb->len); | |
2910 | udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr)); | |
fd2ea0a7 | 2911 | skb_set_queue_mapping(skb, queue_map); |
9e50e3ac | 2912 | skb->priority = pkt_dev->skb_priority; |
1da177e4 | 2913 | |
1da177e4 | 2914 | memcpy(eth, pkt_dev->hh, 12); |
63adc6fb | 2915 | *(__be16 *) ð[12] = protocol; |
64053bee | 2916 | |
ca6549af SW |
2917 | /* Eth + IPh + UDPh + mpls */ |
2918 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2919 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
16dab72f | 2920 | pkt_dev->pkt_overhead; |
1da177e4 | 2921 | |
5aa8b572 | 2922 | if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) { |
1da177e4 | 2923 | datalen = sizeof(struct pktgen_hdr); |
e87cc472 | 2924 | net_info_ratelimited("increased datalen to %d\n", datalen); |
1da177e4 LT |
2925 | } |
2926 | ||
c26bf4a5 | 2927 | udplen = datalen + sizeof(struct udphdr); |
1da177e4 LT |
2928 | udph->source = htons(pkt_dev->cur_udp_src); |
2929 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
c26bf4a5 TG |
2930 | udph->len = htons(udplen); |
2931 | udph->check = 0; | |
1da177e4 | 2932 | |
d5f1ce9a | 2933 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ |
1da177e4 | 2934 | |
1ca7768c FF |
2935 | if (pkt_dev->traffic_class) { |
2936 | /* Version + traffic class + flow (0) */ | |
252e3346 | 2937 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); |
1ca7768c FF |
2938 | } |
2939 | ||
1da177e4 LT |
2940 | iph->hop_limit = 32; |
2941 | ||
c26bf4a5 | 2942 | iph->payload_len = htons(udplen); |
1da177e4 LT |
2943 | iph->nexthdr = IPPROTO_UDP; |
2944 | ||
4e3fd7a0 AD |
2945 | iph->daddr = pkt_dev->cur_in6_daddr; |
2946 | iph->saddr = pkt_dev->cur_in6_saddr; | |
1da177e4 | 2947 | |
ca6549af | 2948 | skb->protocol = protocol; |
1da177e4 LT |
2949 | skb->dev = odev; |
2950 | skb->pkt_type = PACKET_HOST; | |
2951 | ||
c26bf4a5 TG |
2952 | if (!(pkt_dev->flags & F_UDPCSUM)) { |
2953 | skb->ip_summed = CHECKSUM_NONE; | |
2954 | } else if (odev->features & NETIF_F_V6_CSUM) { | |
2955 | skb->ip_summed = CHECKSUM_PARTIAL; | |
2956 | skb->csum_start = skb_transport_header(skb) - skb->head; | |
2957 | skb->csum_offset = offsetof(struct udphdr, check); | |
2958 | udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0); | |
2959 | } else { | |
2960 | __wsum csum = udp_csum(skb); | |
2961 | ||
2962 | /* add protocol-dependent pseudo-header */ | |
2963 | udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum); | |
2964 | ||
2965 | if (udph->check == 0) | |
2966 | udph->check = CSUM_MANGLED_0; | |
2967 | } | |
2968 | ||
26ad7879 | 2969 | pktgen_finalize_skb(pkt_dev, skb, datalen); |
222f1806 | 2970 | |
1da177e4 LT |
2971 | return skb; |
2972 | } | |
2973 | ||
475ac1e4 SH |
2974 | static struct sk_buff *fill_packet(struct net_device *odev, |
2975 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 2976 | { |
222f1806 | 2977 | if (pkt_dev->flags & F_IPV6) |
1da177e4 LT |
2978 | return fill_packet_ipv6(odev, pkt_dev); |
2979 | else | |
2980 | return fill_packet_ipv4(odev, pkt_dev); | |
2981 | } | |
2982 | ||
222f1806 | 2983 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) |
1da177e4 | 2984 | { |
222f1806 LC |
2985 | pkt_dev->seq_num = 1; |
2986 | pkt_dev->idle_acc = 0; | |
1da177e4 | 2987 | pkt_dev->sofar = 0; |
222f1806 LC |
2988 | pkt_dev->tx_bytes = 0; |
2989 | pkt_dev->errors = 0; | |
1da177e4 LT |
2990 | } |
2991 | ||
2992 | /* Set up structure for sending pkts, clear counters */ | |
2993 | ||
2994 | static void pktgen_run(struct pktgen_thread *t) | |
2995 | { | |
c26a8016 | 2996 | struct pktgen_dev *pkt_dev; |
1da177e4 LT |
2997 | int started = 0; |
2998 | ||
f9467eae | 2999 | func_enter(); |
1da177e4 | 3000 | |
8788370a JDB |
3001 | rcu_read_lock(); |
3002 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
1da177e4 LT |
3003 | |
3004 | /* | |
3005 | * setup odev and create initial packet. | |
3006 | */ | |
3007 | pktgen_setup_inject(pkt_dev); | |
3008 | ||
222f1806 | 3009 | if (pkt_dev->odev) { |
1da177e4 | 3010 | pktgen_clear_counters(pkt_dev); |
1da177e4 | 3011 | pkt_dev->skb = NULL; |
398f382c | 3012 | pkt_dev->started_at = pkt_dev->next_tx = ktime_get(); |
fd29cf72 | 3013 | |
16dab72f | 3014 | set_pkt_overhead(pkt_dev); |
222f1806 | 3015 | |
1da177e4 | 3016 | strcpy(pkt_dev->result, "Starting"); |
8788370a | 3017 | pkt_dev->running = 1; /* Cranke yeself! */ |
1da177e4 | 3018 | started++; |
222f1806 | 3019 | } else |
1da177e4 LT |
3020 | strcpy(pkt_dev->result, "Error starting"); |
3021 | } | |
8788370a | 3022 | rcu_read_unlock(); |
222f1806 LC |
3023 | if (started) |
3024 | t->control &= ~(T_STOP); | |
1da177e4 LT |
3025 | } |
3026 | ||
4e58a027 | 3027 | static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn) |
1da177e4 | 3028 | { |
cdcdbe0b | 3029 | struct pktgen_thread *t; |
1da177e4 | 3030 | |
f9467eae | 3031 | func_enter(); |
1da177e4 | 3032 | |
6146e6a4 | 3033 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3034 | |
4e58a027 | 3035 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
95ed63f7 | 3036 | t->control |= T_STOP; |
cdcdbe0b | 3037 | |
6146e6a4 | 3038 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3039 | } |
3040 | ||
648fda74 | 3041 | static int thread_is_running(const struct pktgen_thread *t) |
1da177e4 | 3042 | { |
648fda74 | 3043 | const struct pktgen_dev *pkt_dev; |
1da177e4 | 3044 | |
8788370a JDB |
3045 | rcu_read_lock(); |
3046 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) | |
3047 | if (pkt_dev->running) { | |
3048 | rcu_read_unlock(); | |
648fda74 | 3049 | return 1; |
8788370a JDB |
3050 | } |
3051 | rcu_read_unlock(); | |
648fda74 | 3052 | return 0; |
1da177e4 LT |
3053 | } |
3054 | ||
222f1806 | 3055 | static int pktgen_wait_thread_run(struct pktgen_thread *t) |
1da177e4 | 3056 | { |
222f1806 | 3057 | while (thread_is_running(t)) { |
1da177e4 | 3058 | |
222f1806 | 3059 | msleep_interruptible(100); |
1da177e4 | 3060 | |
222f1806 LC |
3061 | if (signal_pending(current)) |
3062 | goto signal; | |
222f1806 | 3063 | } |
222f1806 LC |
3064 | return 1; |
3065 | signal: | |
3066 | return 0; | |
1da177e4 LT |
3067 | } |
3068 | ||
4e58a027 | 3069 | static int pktgen_wait_all_threads_run(struct pktgen_net *pn) |
1da177e4 | 3070 | { |
cdcdbe0b | 3071 | struct pktgen_thread *t; |
1da177e4 | 3072 | int sig = 1; |
222f1806 | 3073 | |
6146e6a4 | 3074 | mutex_lock(&pktgen_thread_lock); |
cdcdbe0b | 3075 | |
4e58a027 | 3076 | list_for_each_entry(t, &pn->pktgen_threads, th_list) { |
1da177e4 | 3077 | sig = pktgen_wait_thread_run(t); |
222f1806 LC |
3078 | if (sig == 0) |
3079 | break; | |
1da177e4 | 3080 | } |
cdcdbe0b LC |
3081 | |
3082 | if (sig == 0) | |
4e58a027 | 3083 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3084 | t->control |= (T_STOP); |
cdcdbe0b | 3085 | |
6146e6a4 | 3086 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 LT |
3087 | return sig; |
3088 | } | |
3089 | ||
4e58a027 | 3090 | static void pktgen_run_all_threads(struct pktgen_net *pn) |
1da177e4 | 3091 | { |
cdcdbe0b | 3092 | struct pktgen_thread *t; |
1da177e4 | 3093 | |
f9467eae | 3094 | func_enter(); |
1da177e4 | 3095 | |
6146e6a4 | 3096 | mutex_lock(&pktgen_thread_lock); |
1da177e4 | 3097 | |
4e58a027 | 3098 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
1da177e4 | 3099 | t->control |= (T_RUN); |
cdcdbe0b | 3100 | |
6146e6a4 | 3101 | mutex_unlock(&pktgen_thread_lock); |
1da177e4 | 3102 | |
63adc6fb SH |
3103 | /* Propagate thread->control */ |
3104 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
222f1806 | 3105 | |
4e58a027 | 3106 | pktgen_wait_all_threads_run(pn); |
1da177e4 LT |
3107 | } |
3108 | ||
4e58a027 | 3109 | static void pktgen_reset_all_threads(struct pktgen_net *pn) |
eb37b41c JB |
3110 | { |
3111 | struct pktgen_thread *t; | |
3112 | ||
f9467eae | 3113 | func_enter(); |
eb37b41c JB |
3114 | |
3115 | mutex_lock(&pktgen_thread_lock); | |
3116 | ||
4e58a027 | 3117 | list_for_each_entry(t, &pn->pktgen_threads, th_list) |
eb37b41c JB |
3118 | t->control |= (T_REMDEVALL); |
3119 | ||
3120 | mutex_unlock(&pktgen_thread_lock); | |
3121 | ||
63adc6fb SH |
3122 | /* Propagate thread->control */ |
3123 | schedule_timeout_interruptible(msecs_to_jiffies(125)); | |
eb37b41c | 3124 | |
4e58a027 | 3125 | pktgen_wait_all_threads_run(pn); |
eb37b41c JB |
3126 | } |
3127 | ||
1da177e4 LT |
3128 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) |
3129 | { | |
fd29cf72 | 3130 | __u64 bps, mbps, pps; |
222f1806 | 3131 | char *p = pkt_dev->result; |
fd29cf72 SH |
3132 | ktime_t elapsed = ktime_sub(pkt_dev->stopped_at, |
3133 | pkt_dev->started_at); | |
3134 | ktime_t idle = ns_to_ktime(pkt_dev->idle_acc); | |
3135 | ||
03a14ab1 | 3136 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", |
fd29cf72 SH |
3137 | (unsigned long long)ktime_to_us(elapsed), |
3138 | (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)), | |
3139 | (unsigned long long)ktime_to_us(idle), | |
222f1806 LC |
3140 | (unsigned long long)pkt_dev->sofar, |
3141 | pkt_dev->cur_pkt_size, nr_frags); | |
3142 | ||
fd29cf72 SH |
3143 | pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC, |
3144 | ktime_to_ns(elapsed)); | |
222f1806 LC |
3145 | |
3146 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3147 | ||
3148 | mbps = bps; | |
3149 | do_div(mbps, 1000000); | |
3150 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3151 | (unsigned long long)pps, | |
3152 | (unsigned long long)mbps, | |
3153 | (unsigned long long)bps, | |
3154 | (unsigned long long)pkt_dev->errors); | |
1da177e4 | 3155 | } |
1da177e4 LT |
3156 | |
3157 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
222f1806 | 3158 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) |
1da177e4 | 3159 | { |
222f1806 | 3160 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; |
95ed63f7 | 3161 | |
222f1806 | 3162 | if (!pkt_dev->running) { |
f9467eae JP |
3163 | pr_warning("interface: %s is already stopped\n", |
3164 | pkt_dev->odevname); | |
222f1806 LC |
3165 | return -EINVAL; |
3166 | } | |
1da177e4 | 3167 | |
8788370a | 3168 | pkt_dev->running = 0; |
3bda06a3 SH |
3169 | kfree_skb(pkt_dev->skb); |
3170 | pkt_dev->skb = NULL; | |
398f382c | 3171 | pkt_dev->stopped_at = ktime_get(); |
1da177e4 | 3172 | |
95ed63f7 | 3173 | show_results(pkt_dev, nr_frags); |
1da177e4 | 3174 | |
222f1806 | 3175 | return 0; |
1da177e4 LT |
3176 | } |
3177 | ||
222f1806 | 3178 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) |
1da177e4 | 3179 | { |
c26a8016 | 3180 | struct pktgen_dev *pkt_dev, *best = NULL; |
222f1806 | 3181 | |
8788370a JDB |
3182 | rcu_read_lock(); |
3183 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { | |
c26a8016 | 3184 | if (!pkt_dev->running) |
222f1806 LC |
3185 | continue; |
3186 | if (best == NULL) | |
c26a8016 | 3187 | best = pkt_dev; |
398f382c | 3188 | else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0) |
c26a8016 | 3189 | best = pkt_dev; |
1da177e4 | 3190 | } |
8788370a JDB |
3191 | rcu_read_unlock(); |
3192 | ||
222f1806 | 3193 | return best; |
1da177e4 LT |
3194 | } |
3195 | ||
222f1806 LC |
3196 | static void pktgen_stop(struct pktgen_thread *t) |
3197 | { | |
c26a8016 | 3198 | struct pktgen_dev *pkt_dev; |
1da177e4 | 3199 | |
f9467eae | 3200 | func_enter(); |
1da177e4 | 3201 | |
8788370a | 3202 | rcu_read_lock(); |
1da177e4 | 3203 | |
8788370a | 3204 | list_for_each_entry_rcu(pkt_dev, &t->if_list, list) { |
c26a8016 | 3205 | pktgen_stop_device(pkt_dev); |
95ed63f7 | 3206 | } |
1da177e4 | 3207 | |
8788370a | 3208 | rcu_read_unlock(); |
1da177e4 LT |
3209 | } |
3210 | ||
95ed63f7 AK |
3211 | /* |
3212 | * one of our devices needs to be removed - find it | |
3213 | * and remove it | |
3214 | */ | |
3215 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3216 | { | |
c26a8016 LC |
3217 | struct list_head *q, *n; |
3218 | struct pktgen_dev *cur; | |
95ed63f7 | 3219 | |
f9467eae | 3220 | func_enter(); |
95ed63f7 | 3221 | |
c26a8016 LC |
3222 | list_for_each_safe(q, n, &t->if_list) { |
3223 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3224 | |
222f1806 LC |
3225 | if (!cur->removal_mark) |
3226 | continue; | |
95ed63f7 | 3227 | |
86dc1ad2 | 3228 | kfree_skb(cur->skb); |
95ed63f7 AK |
3229 | cur->skb = NULL; |
3230 | ||
3231 | pktgen_remove_device(t, cur); | |
3232 | ||
3233 | break; | |
3234 | } | |
95ed63f7 AK |
3235 | } |
3236 | ||
222f1806 | 3237 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
1da177e4 | 3238 | { |
c26a8016 LC |
3239 | struct list_head *q, *n; |
3240 | struct pktgen_dev *cur; | |
222f1806 | 3241 | |
f9467eae JP |
3242 | func_enter(); |
3243 | ||
222f1806 | 3244 | /* Remove all devices, free mem */ |
95ed63f7 | 3245 | |
c26a8016 LC |
3246 | list_for_each_safe(q, n, &t->if_list) { |
3247 | cur = list_entry(q, struct pktgen_dev, list); | |
95ed63f7 | 3248 | |
86dc1ad2 | 3249 | kfree_skb(cur->skb); |
95ed63f7 AK |
3250 | cur->skb = NULL; |
3251 | ||
1da177e4 LT |
3252 | pktgen_remove_device(t, cur); |
3253 | } | |
1da177e4 LT |
3254 | } |
3255 | ||
222f1806 | 3256 | static void pktgen_rem_thread(struct pktgen_thread *t) |
1da177e4 | 3257 | { |
222f1806 | 3258 | /* Remove from the thread list */ |
4e58a027 | 3259 | remove_proc_entry(t->tsk->comm, t->net->proc_dir); |
1da177e4 LT |
3260 | } |
3261 | ||
ef87979c | 3262 | static void pktgen_resched(struct pktgen_dev *pkt_dev) |
3791decb | 3263 | { |
398f382c | 3264 | ktime_t idle_start = ktime_get(); |
ef87979c | 3265 | schedule(); |
398f382c | 3266 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
ef87979c | 3267 | } |
3791decb | 3268 | |
ef87979c SH |
3269 | static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev) |
3270 | { | |
398f382c | 3271 | ktime_t idle_start = ktime_get(); |
3791decb | 3272 | |
ef87979c SH |
3273 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { |
3274 | if (signal_pending(current)) | |
3275 | break; | |
3276 | ||
3277 | if (need_resched()) | |
3278 | pktgen_resched(pkt_dev); | |
3279 | else | |
3280 | cpu_relax(); | |
3281 | } | |
398f382c | 3282 | pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start)); |
3791decb SH |
3283 | } |
3284 | ||
475ac1e4 | 3285 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) |
1da177e4 | 3286 | { |
00829823 | 3287 | struct net_device *odev = pkt_dev->odev; |
fd2ea0a7 | 3288 | struct netdev_queue *txq; |
fd2ea0a7 | 3289 | u16 queue_map; |
1da177e4 LT |
3290 | int ret; |
3291 | ||
ef87979c SH |
3292 | /* If device is offline, then don't send */ |
3293 | if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) { | |
3294 | pktgen_stop_device(pkt_dev); | |
3295 | return; | |
fd2ea0a7 DM |
3296 | } |
3297 | ||
ef87979c SH |
3298 | /* This is max DELAY, this has special meaning of |
3299 | * "never transmit" | |
3300 | */ | |
3301 | if (unlikely(pkt_dev->delay == ULLONG_MAX)) { | |
398f382c | 3302 | pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX); |
3791decb | 3303 | return; |
1da177e4 | 3304 | } |
222f1806 | 3305 | |
ef87979c | 3306 | /* If no skb or clone count exhausted then get new one */ |
7d7bb1cf SH |
3307 | if (!pkt_dev->skb || (pkt_dev->last_ok && |
3308 | ++pkt_dev->clone_count >= pkt_dev->clone_skb)) { | |
3309 | /* build a new pkt */ | |
3310 | kfree_skb(pkt_dev->skb); | |
3311 | ||
3312 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3313 | if (pkt_dev->skb == NULL) { | |
f9467eae | 3314 | pr_err("ERROR: couldn't allocate skb in fill_packet\n"); |
7d7bb1cf SH |
3315 | schedule(); |
3316 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3317 | return; | |
1da177e4 | 3318 | } |
baac8564 | 3319 | pkt_dev->last_pkt_size = pkt_dev->skb->len; |
7d7bb1cf SH |
3320 | pkt_dev->allocated_skbs++; |
3321 | pkt_dev->clone_count = 0; /* reset counter */ | |
1da177e4 | 3322 | } |
95ed63f7 | 3323 | |
ef87979c SH |
3324 | if (pkt_dev->delay && pkt_dev->last_ok) |
3325 | spin(pkt_dev, pkt_dev->next_tx); | |
3326 | ||
fd2ea0a7 DM |
3327 | queue_map = skb_get_queue_mapping(pkt_dev->skb); |
3328 | txq = netdev_get_tx_queue(odev, queue_map); | |
3329 | ||
0f2eea4b DB |
3330 | local_bh_disable(); |
3331 | ||
3332 | HARD_TX_LOCK(odev, txq, smp_processor_id()); | |
5b8db2f5 | 3333 | |
6f25cd47 | 3334 | if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) { |
ef87979c | 3335 | ret = NETDEV_TX_BUSY; |
0835acfe ED |
3336 | pkt_dev->last_ok = 0; |
3337 | goto unlock; | |
3338 | } | |
3339 | atomic_inc(&(pkt_dev->skb->users)); | |
4798248e | 3340 | ret = netdev_start_xmit(pkt_dev->skb, odev); |
ef87979c SH |
3341 | |
3342 | switch (ret) { | |
3343 | case NETDEV_TX_OK: | |
3344 | txq_trans_update(txq); | |
3345 | pkt_dev->last_ok = 1; | |
3346 | pkt_dev->sofar++; | |
3347 | pkt_dev->seq_num++; | |
baac8564 | 3348 | pkt_dev->tx_bytes += pkt_dev->last_pkt_size; |
ef87979c | 3349 | break; |
f466dba1 JF |
3350 | case NET_XMIT_DROP: |
3351 | case NET_XMIT_CN: | |
3352 | case NET_XMIT_POLICED: | |
3353 | /* skb has been consumed */ | |
3354 | pkt_dev->errors++; | |
3355 | break; | |
ef87979c | 3356 | default: /* Drivers are not supposed to return other values! */ |
e87cc472 JP |
3357 | net_info_ratelimited("%s xmit error: %d\n", |
3358 | pkt_dev->odevname, ret); | |
ef87979c SH |
3359 | pkt_dev->errors++; |
3360 | /* fallthru */ | |
3361 | case NETDEV_TX_LOCKED: | |
3362 | case NETDEV_TX_BUSY: | |
3363 | /* Retry it next time */ | |
3364 | atomic_dec(&(pkt_dev->skb->users)); | |
3365 | pkt_dev->last_ok = 0; | |
222f1806 | 3366 | } |
0835acfe | 3367 | unlock: |
0f2eea4b DB |
3368 | HARD_TX_UNLOCK(odev, txq); |
3369 | ||
3370 | local_bh_enable(); | |
222f1806 | 3371 | |
1da177e4 LT |
3372 | /* If pkt_dev->count is zero, then run forever */ |
3373 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
ef87979c | 3374 | pktgen_wait_for_skb(pkt_dev); |
222f1806 | 3375 | |
1da177e4 LT |
3376 | /* Done with this */ |
3377 | pktgen_stop_device(pkt_dev); | |
222f1806 | 3378 | } |
222f1806 | 3379 | } |
1da177e4 | 3380 | |
4ec93edb | 3381 | /* |
1da177e4 LT |
3382 | * Main loop of the thread goes here |
3383 | */ | |
3384 | ||
ee74baa7 | 3385 | static int pktgen_thread_worker(void *arg) |
1da177e4 LT |
3386 | { |
3387 | DEFINE_WAIT(wait); | |
ee74baa7 | 3388 | struct pktgen_thread *t = arg; |
222f1806 | 3389 | struct pktgen_dev *pkt_dev = NULL; |
1da177e4 | 3390 | int cpu = t->cpu; |
1da177e4 | 3391 | |
ee74baa7 | 3392 | BUG_ON(smp_processor_id() != cpu); |
1da177e4 LT |
3393 | |
3394 | init_waitqueue_head(&t->queue); | |
d3ede327 | 3395 | complete(&t->start_done); |
1da177e4 | 3396 | |
f9467eae | 3397 | pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); |
1da177e4 | 3398 | |
83144186 RW |
3399 | set_freezable(); |
3400 | ||
baac167b JDB |
3401 | __set_current_state(TASK_RUNNING); |
3402 | ||
ee74baa7 DM |
3403 | while (!kthread_should_stop()) { |
3404 | pkt_dev = next_to_run(t); | |
1da177e4 | 3405 | |
ef87979c | 3406 | if (unlikely(!pkt_dev && t->control == 0)) { |
4e58a027 | 3407 | if (t->net->pktgen_exiting) |
551eaff1 | 3408 | break; |
ef87979c SH |
3409 | wait_event_interruptible_timeout(t->queue, |
3410 | t->control != 0, | |
3411 | HZ/10); | |
1b3f720b | 3412 | try_to_freeze(); |
ef87979c | 3413 | continue; |
ee74baa7 | 3414 | } |
1da177e4 | 3415 | |
ef87979c | 3416 | if (likely(pkt_dev)) { |
1da177e4 LT |
3417 | pktgen_xmit(pkt_dev); |
3418 | ||
ef87979c SH |
3419 | if (need_resched()) |
3420 | pktgen_resched(pkt_dev); | |
3421 | else | |
3422 | cpu_relax(); | |
3423 | } | |
3424 | ||
222f1806 | 3425 | if (t->control & T_STOP) { |
1da177e4 LT |
3426 | pktgen_stop(t); |
3427 | t->control &= ~(T_STOP); | |
3428 | } | |
3429 | ||
222f1806 | 3430 | if (t->control & T_RUN) { |
1da177e4 LT |
3431 | pktgen_run(t); |
3432 | t->control &= ~(T_RUN); | |
3433 | } | |
3434 | ||
222f1806 | 3435 | if (t->control & T_REMDEVALL) { |
1da177e4 | 3436 | pktgen_rem_all_ifs(t); |
95ed63f7 AK |
3437 | t->control &= ~(T_REMDEVALL); |
3438 | } | |
3439 | ||
222f1806 | 3440 | if (t->control & T_REMDEV) { |
95ed63f7 | 3441 | pktgen_rem_one_if(t); |
1da177e4 LT |
3442 | t->control &= ~(T_REMDEV); |
3443 | } | |
3444 | ||
09fe3ef4 | 3445 | try_to_freeze(); |
222f1806 | 3446 | } |
baac167b | 3447 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 3448 | |
f9467eae | 3449 | pr_debug("%s stopping all device\n", t->tsk->comm); |
222f1806 | 3450 | pktgen_stop(t); |
1da177e4 | 3451 | |
f9467eae | 3452 | pr_debug("%s removing all device\n", t->tsk->comm); |
222f1806 | 3453 | pktgen_rem_all_ifs(t); |
1da177e4 | 3454 | |
f9467eae | 3455 | pr_debug("%s removing thread\n", t->tsk->comm); |
222f1806 | 3456 | pktgen_rem_thread(t); |
cdcdbe0b | 3457 | |
551eaff1 ED |
3458 | /* Wait for kthread_stop */ |
3459 | while (!kthread_should_stop()) { | |
3460 | set_current_state(TASK_INTERRUPTIBLE); | |
3461 | schedule(); | |
3462 | } | |
3463 | __set_current_state(TASK_RUNNING); | |
3464 | ||
ee74baa7 | 3465 | return 0; |
1da177e4 LT |
3466 | } |
3467 | ||
222f1806 | 3468 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, |
3e984840 | 3469 | const char *ifname, bool exact) |
1da177e4 | 3470 | { |
c26a8016 | 3471 | struct pktgen_dev *p, *pkt_dev = NULL; |
3e984840 | 3472 | size_t len = strlen(ifname); |
222f1806 | 3473 | |
8788370a JDB |
3474 | rcu_read_lock(); |
3475 | list_for_each_entry_rcu(p, &t->if_list, list) | |
3e984840 ED |
3476 | if (strncmp(p->odevname, ifname, len) == 0) { |
3477 | if (p->odevname[len]) { | |
3478 | if (exact || p->odevname[len] != '@') | |
3479 | continue; | |
3480 | } | |
c26a8016 | 3481 | pkt_dev = p; |
222f1806 LC |
3482 | break; |
3483 | } | |
222f1806 | 3484 | |
8788370a | 3485 | rcu_read_unlock(); |
f9467eae | 3486 | pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev); |
222f1806 | 3487 | return pkt_dev; |
1da177e4 LT |
3488 | } |
3489 | ||
4ec93edb YH |
3490 | /* |
3491 | * Adds a dev at front of if_list. | |
1da177e4 LT |
3492 | */ |
3493 | ||
222f1806 LC |
3494 | static int add_dev_to_thread(struct pktgen_thread *t, |
3495 | struct pktgen_dev *pkt_dev) | |
1da177e4 LT |
3496 | { |
3497 | int rv = 0; | |
222f1806 | 3498 | |
8788370a JDB |
3499 | /* This function cannot be called concurrently, as its called |
3500 | * under pktgen_thread_lock mutex, but it can run from | |
3501 | * userspace on another CPU than the kthread. The if_lock() | |
3502 | * is used here to sync with concurrent instances of | |
3503 | * _rem_dev_from_if_list() invoked via kthread, which is also | |
3504 | * updating the if_list */ | |
222f1806 LC |
3505 | if_lock(t); |
3506 | ||
3507 | if (pkt_dev->pg_thread) { | |
f9467eae | 3508 | pr_err("ERROR: already assigned to a thread\n"); |
222f1806 LC |
3509 | rv = -EBUSY; |
3510 | goto out; | |
3511 | } | |
c26a8016 | 3512 | |
1da177e4 | 3513 | pkt_dev->running = 0; |
8788370a JDB |
3514 | pkt_dev->pg_thread = t; |
3515 | list_add_rcu(&pkt_dev->list, &t->if_list); | |
1da177e4 | 3516 | |
222f1806 LC |
3517 | out: |
3518 | if_unlock(t); | |
3519 | return rv; | |
1da177e4 LT |
3520 | } |
3521 | ||
3522 | /* Called under thread lock */ | |
3523 | ||
222f1806 | 3524 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) |
1da177e4 | 3525 | { |
222f1806 | 3526 | struct pktgen_dev *pkt_dev; |
39df232f | 3527 | int err; |
3291b9db | 3528 | int node = cpu_to_node(t->cpu); |
222f1806 | 3529 | |
1da177e4 LT |
3530 | /* We don't allow a device to be on several threads */ |
3531 | ||
4e58a027 | 3532 | pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND); |
d50a6b56 | 3533 | if (pkt_dev) { |
f9467eae | 3534 | pr_err("ERROR: interface already used\n"); |
222f1806 LC |
3535 | return -EBUSY; |
3536 | } | |
d50a6b56 | 3537 | |
3291b9db | 3538 | pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node); |
d50a6b56 SH |
3539 | if (!pkt_dev) |
3540 | return -ENOMEM; | |
3541 | ||
593f63b0 | 3542 | strcpy(pkt_dev->odevname, ifname); |
68d5ac2e | 3543 | pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state), |
3291b9db | 3544 | node); |
d50a6b56 SH |
3545 | if (pkt_dev->flows == NULL) { |
3546 | kfree(pkt_dev); | |
3547 | return -ENOMEM; | |
3548 | } | |
d50a6b56 | 3549 | |
95ed63f7 | 3550 | pkt_dev->removal_mark = 0; |
d50a6b56 | 3551 | pkt_dev->nfrags = 0; |
fd29cf72 | 3552 | pkt_dev->delay = pg_delay_d; |
d50a6b56 SH |
3553 | pkt_dev->count = pg_count_d; |
3554 | pkt_dev->sofar = 0; | |
222f1806 | 3555 | pkt_dev->udp_src_min = 9; /* sink port */ |
d50a6b56 SH |
3556 | pkt_dev->udp_src_max = 9; |
3557 | pkt_dev->udp_dst_min = 9; | |
3558 | pkt_dev->udp_dst_max = 9; | |
34954ddc FF |
3559 | pkt_dev->vlan_p = 0; |
3560 | pkt_dev->vlan_cfi = 0; | |
3561 | pkt_dev->vlan_id = 0xffff; | |
3562 | pkt_dev->svlan_p = 0; | |
3563 | pkt_dev->svlan_cfi = 0; | |
3564 | pkt_dev->svlan_id = 0xffff; | |
e99b99b4 | 3565 | pkt_dev->node = -1; |
34954ddc | 3566 | |
4e58a027 | 3567 | err = pktgen_setup_dev(t->net, pkt_dev, ifname); |
39df232f SH |
3568 | if (err) |
3569 | goto out1; | |
d8873315 NH |
3570 | if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING) |
3571 | pkt_dev->clone_skb = pg_clone_skb_d; | |
d50a6b56 | 3572 | |
4e58a027 | 3573 | pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir, |
5efdccbc | 3574 | &pktgen_if_fops, pkt_dev); |
39df232f | 3575 | if (!pkt_dev->entry) { |
f9467eae | 3576 | pr_err("cannot create %s/%s procfs entry\n", |
d50a6b56 | 3577 | PG_PROC_DIR, ifname); |
39df232f SH |
3578 | err = -EINVAL; |
3579 | goto out2; | |
d50a6b56 | 3580 | } |
a553e4a6 JHS |
3581 | #ifdef CONFIG_XFRM |
3582 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3583 | pkt_dev->ipsproto = IPPROTO_ESP; | |
cf93d47e FD |
3584 | |
3585 | /* xfrm tunnel mode needs additional dst to extract outter | |
3586 | * ip header protocol/ttl/id field, here creat a phony one. | |
3587 | * instead of looking for a valid rt, which definitely hurting | |
3588 | * performance under such circumstance. | |
3589 | */ | |
3590 | pkt_dev->dstops.family = AF_INET; | |
3591 | pkt_dev->dst.dev = pkt_dev->odev; | |
3592 | dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false); | |
3593 | pkt_dev->dst.child = &pkt_dev->dst; | |
3594 | pkt_dev->dst.ops = &pkt_dev->dstops; | |
a553e4a6 | 3595 | #endif |
d50a6b56 SH |
3596 | |
3597 | return add_dev_to_thread(t, pkt_dev); | |
39df232f SH |
3598 | out2: |
3599 | dev_put(pkt_dev->odev); | |
3600 | out1: | |
a553e4a6 JHS |
3601 | #ifdef CONFIG_XFRM |
3602 | free_SAs(pkt_dev); | |
3603 | #endif | |
1d0ebfe7 | 3604 | vfree(pkt_dev->flows); |
39df232f SH |
3605 | kfree(pkt_dev); |
3606 | return err; | |
1da177e4 LT |
3607 | } |
3608 | ||
4e58a027 | 3609 | static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn) |
1da177e4 | 3610 | { |
cdcdbe0b | 3611 | struct pktgen_thread *t; |
d50a6b56 | 3612 | struct proc_dir_entry *pe; |
ee74baa7 | 3613 | struct task_struct *p; |
222f1806 | 3614 | |
3291b9db ED |
3615 | t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL, |
3616 | cpu_to_node(cpu)); | |
222f1806 | 3617 | if (!t) { |
f9467eae | 3618 | pr_err("ERROR: out of memory, can't create new thread\n"); |
222f1806 LC |
3619 | return -ENOMEM; |
3620 | } | |
3621 | ||
222f1806 | 3622 | spin_lock_init(&t->if_lock); |
1da177e4 | 3623 | t->cpu = cpu; |
222f1806 | 3624 | |
ee74baa7 DM |
3625 | INIT_LIST_HEAD(&t->if_list); |
3626 | ||
4e58a027 | 3627 | list_add_tail(&t->th_list, &pn->pktgen_threads); |
d3ede327 | 3628 | init_completion(&t->start_done); |
ee74baa7 | 3629 | |
94dcf29a ED |
3630 | p = kthread_create_on_node(pktgen_thread_worker, |
3631 | t, | |
3632 | cpu_to_node(cpu), | |
3633 | "kpktgend_%d", cpu); | |
ee74baa7 | 3634 | if (IS_ERR(p)) { |
f9467eae | 3635 | pr_err("kernel_thread() failed for cpu %d\n", t->cpu); |
ee74baa7 DM |
3636 | list_del(&t->th_list); |
3637 | kfree(t); | |
3638 | return PTR_ERR(p); | |
3639 | } | |
3640 | kthread_bind(p, cpu); | |
3641 | t->tsk = p; | |
3642 | ||
4e58a027 | 3643 | pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir, |
5efdccbc | 3644 | &pktgen_thread_fops, t); |
222f1806 | 3645 | if (!pe) { |
f9467eae | 3646 | pr_err("cannot create %s/%s procfs entry\n", |
ee74baa7 DM |
3647 | PG_PROC_DIR, t->tsk->comm); |
3648 | kthread_stop(p); | |
3649 | list_del(&t->th_list); | |
222f1806 LC |
3650 | kfree(t); |
3651 | return -EINVAL; | |
3652 | } | |
d50a6b56 | 3653 | |
4e58a027 | 3654 | t->net = pn; |
ee74baa7 | 3655 | wake_up_process(p); |
d3ede327 | 3656 | wait_for_completion(&t->start_done); |
1da177e4 LT |
3657 | |
3658 | return 0; | |
3659 | } | |
3660 | ||
4ec93edb YH |
3661 | /* |
3662 | * Removes a device from the thread if_list. | |
1da177e4 | 3663 | */ |
222f1806 LC |
3664 | static void _rem_dev_from_if_list(struct pktgen_thread *t, |
3665 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3666 | { |
c26a8016 LC |
3667 | struct list_head *q, *n; |
3668 | struct pktgen_dev *p; | |
1da177e4 | 3669 | |
8788370a | 3670 | if_lock(t); |
c26a8016 LC |
3671 | list_for_each_safe(q, n, &t->if_list) { |
3672 | p = list_entry(q, struct pktgen_dev, list); | |
3673 | if (p == pkt_dev) | |
8788370a | 3674 | list_del_rcu(&p->list); |
1da177e4 | 3675 | } |
8788370a | 3676 | if_unlock(t); |
1da177e4 LT |
3677 | } |
3678 | ||
222f1806 LC |
3679 | static int pktgen_remove_device(struct pktgen_thread *t, |
3680 | struct pktgen_dev *pkt_dev) | |
1da177e4 | 3681 | { |
f9467eae | 3682 | pr_debug("remove_device pkt_dev=%p\n", pkt_dev); |
1da177e4 | 3683 | |
222f1806 | 3684 | if (pkt_dev->running) { |
f9467eae | 3685 | pr_warning("WARNING: trying to remove a running interface, stopping it now\n"); |
222f1806 LC |
3686 | pktgen_stop_device(pkt_dev); |
3687 | } | |
3688 | ||
3689 | /* Dis-associate from the interface */ | |
1da177e4 LT |
3690 | |
3691 | if (pkt_dev->odev) { | |
3692 | dev_put(pkt_dev->odev); | |
222f1806 LC |
3693 | pkt_dev->odev = NULL; |
3694 | } | |
3695 | ||
8788370a JDB |
3696 | /* Remove proc before if_list entry, because add_device uses |
3697 | * list to determine if interface already exist, avoid race | |
3698 | * with proc_create_data() */ | |
39df232f | 3699 | if (pkt_dev->entry) |
a8ca16ea | 3700 | proc_remove(pkt_dev->entry); |
1da177e4 | 3701 | |
8788370a JDB |
3702 | /* And update the thread if_list */ |
3703 | _rem_dev_from_if_list(t, pkt_dev); | |
3704 | ||
a553e4a6 JHS |
3705 | #ifdef CONFIG_XFRM |
3706 | free_SAs(pkt_dev); | |
3707 | #endif | |
1d0ebfe7 | 3708 | vfree(pkt_dev->flows); |
26ad7879 ED |
3709 | if (pkt_dev->page) |
3710 | put_page(pkt_dev->page); | |
8788370a | 3711 | kfree_rcu(pkt_dev, rcu); |
222f1806 | 3712 | return 0; |
1da177e4 LT |
3713 | } |
3714 | ||
4e58a027 | 3715 | static int __net_init pg_net_init(struct net *net) |
1da177e4 | 3716 | { |
4e58a027 | 3717 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
d50a6b56 | 3718 | struct proc_dir_entry *pe; |
4e58a027 CW |
3719 | int cpu, ret = 0; |
3720 | ||
3721 | pn->net = net; | |
3722 | INIT_LIST_HEAD(&pn->pktgen_threads); | |
3723 | pn->pktgen_exiting = false; | |
3724 | pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net); | |
3725 | if (!pn->proc_dir) { | |
3726 | pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR); | |
d50a6b56 | 3727 | return -ENODEV; |
4e58a027 CW |
3728 | } |
3729 | pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops); | |
222f1806 | 3730 | if (pe == NULL) { |
4e58a027 | 3731 | pr_err("cannot create %s procfs entry\n", PGCTRL); |
ce14f894 | 3732 | ret = -EINVAL; |
4e58a027 | 3733 | goto remove; |
222f1806 | 3734 | } |
1da177e4 | 3735 | |
670c02c2 | 3736 | for_each_online_cpu(cpu) { |
8024bb24 | 3737 | int err; |
1da177e4 | 3738 | |
4e58a027 | 3739 | err = pktgen_create_thread(cpu, pn); |
8024bb24 | 3740 | if (err) |
4e58a027 | 3741 | pr_warn("Cannot create thread for cpu %d (%d)\n", |
f9467eae | 3742 | cpu, err); |
222f1806 | 3743 | } |
8024bb24 | 3744 | |
4e58a027 CW |
3745 | if (list_empty(&pn->pktgen_threads)) { |
3746 | pr_err("Initialization failed for all threads\n"); | |
ce14f894 | 3747 | ret = -ENODEV; |
4e58a027 | 3748 | goto remove_entry; |
8024bb24 LC |
3749 | } |
3750 | ||
222f1806 | 3751 | return 0; |
ce14f894 | 3752 | |
4e58a027 CW |
3753 | remove_entry: |
3754 | remove_proc_entry(PGCTRL, pn->proc_dir); | |
3755 | remove: | |
ece31ffd | 3756 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
ce14f894 | 3757 | return ret; |
1da177e4 LT |
3758 | } |
3759 | ||
4e58a027 | 3760 | static void __net_exit pg_net_exit(struct net *net) |
1da177e4 | 3761 | { |
4e58a027 | 3762 | struct pktgen_net *pn = net_generic(net, pg_net_id); |
cdcdbe0b LC |
3763 | struct pktgen_thread *t; |
3764 | struct list_head *q, *n; | |
d4b11335 | 3765 | LIST_HEAD(list); |
1da177e4 | 3766 | |
222f1806 | 3767 | /* Stop all interfaces & threads */ |
4e58a027 | 3768 | pn->pktgen_exiting = true; |
1da177e4 | 3769 | |
c57b5468 | 3770 | mutex_lock(&pktgen_thread_lock); |
4e58a027 | 3771 | list_splice_init(&pn->pktgen_threads, &list); |
c57b5468 ED |
3772 | mutex_unlock(&pktgen_thread_lock); |
3773 | ||
3774 | list_for_each_safe(q, n, &list) { | |
cdcdbe0b | 3775 | t = list_entry(q, struct pktgen_thread, th_list); |
c57b5468 | 3776 | list_del(&t->th_list); |
ee74baa7 DM |
3777 | kthread_stop(t->tsk); |
3778 | kfree(t); | |
222f1806 | 3779 | } |
1da177e4 | 3780 | |
4e58a027 | 3781 | remove_proc_entry(PGCTRL, pn->proc_dir); |
ece31ffd | 3782 | remove_proc_entry(PG_PROC_DIR, pn->net->proc_net); |
4e58a027 CW |
3783 | } |
3784 | ||
3785 | static struct pernet_operations pg_net_ops = { | |
3786 | .init = pg_net_init, | |
3787 | .exit = pg_net_exit, | |
3788 | .id = &pg_net_id, | |
3789 | .size = sizeof(struct pktgen_net), | |
3790 | }; | |
3791 | ||
3792 | static int __init pg_init(void) | |
3793 | { | |
3794 | int ret = 0; | |
1da177e4 | 3795 | |
4e58a027 CW |
3796 | pr_info("%s", version); |
3797 | ret = register_pernet_subsys(&pg_net_ops); | |
3798 | if (ret) | |
3799 | return ret; | |
3800 | ret = register_netdevice_notifier(&pktgen_notifier_block); | |
3801 | if (ret) | |
3802 | unregister_pernet_subsys(&pg_net_ops); | |
3803 | ||
3804 | return ret; | |
3805 | } | |
3806 | ||
3807 | static void __exit pg_cleanup(void) | |
3808 | { | |
3809 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3810 | unregister_pernet_subsys(&pg_net_ops); | |
8788370a | 3811 | /* Don't need rcu_barrier() due to use of kfree_rcu() */ |
1da177e4 LT |
3812 | } |
3813 | ||
1da177e4 LT |
3814 | module_init(pg_init); |
3815 | module_exit(pg_cleanup); | |
3816 | ||
c3d2f52d | 3817 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>"); |
1da177e4 LT |
3818 | MODULE_DESCRIPTION("Packet Generator tool"); |
3819 | MODULE_LICENSE("GPL"); | |
c3d2f52d | 3820 | MODULE_VERSION(VERSION); |
1da177e4 | 3821 | module_param(pg_count_d, int, 0); |
c3d2f52d | 3822 | MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject"); |
1da177e4 | 3823 | module_param(pg_delay_d, int, 0); |
c3d2f52d | 3824 | MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)"); |
1da177e4 | 3825 | module_param(pg_clone_skb_d, int, 0); |
c3d2f52d | 3826 | MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet"); |
1da177e4 | 3827 | module_param(debug, int, 0); |
c3d2f52d | 3828 | MODULE_PARM_DESC(debug, "Enable debugging of pktgen module"); |