]>
Commit | Line | Data |
---|---|---|
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> | |
9 | * Jens Låås <jens.laas@data.slu.se> | |
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. | |
18 | * The tool is implemented as a linux module. Parameters are output | |
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 | * | |
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 | |
49 | * as a "fastpath" with a configurable number of clones after alloc's. | |
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 | |
52 | * clones. | |
53 | * | |
54 | * Also moved to /proc/net/pktgen/ | |
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 | * | |
63 | * | |
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: | |
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 | |
72 | * way. The if_lock should be possible to remove when add/rem_device is merged | |
73 | * into this too. | |
74 | * | |
75 | * By design there should only be *one* "controlling" process. In practice | |
76 | * multiple write accesses gives unpredictable result. Understood by "write" | |
77 | * to /proc gives result code thats should be read be the "writer". | |
78 | * For practical use this should be no problem. | |
79 | * | |
80 | * Note when adding devices to a specific CPU there good idea to also assign | |
81 | * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU. | |
82 | * --ro | |
83 | * | |
84 | * Fix refcount off by one if first packet fails, potential null deref, | |
85 | * memleak 030710- KJP | |
86 | * | |
87 | * First "ranges" functionality for ipv6 030726 --ro | |
88 | * | |
89 | * Included flow support. 030802 ANK. | |
90 | * | |
91 | * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org> | |
92 | * | |
93 | * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419 | |
94 | * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604 | |
95 | * | |
96 | * New xmit() return, do_div and misc clean up by Stephen Hemminger | |
97 | * <shemminger@osdl.org> 040923 | |
98 | * | |
99 | * Randy Dunlap fixed u64 printk compiler waring | |
100 | * | |
101 | * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org> | |
102 | * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213 | |
103 | * | |
104 | * Corrections from Nikolai Malykh (nmalykh@bilim.com) | |
105 | * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230 | |
106 | * | |
107 | * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com> | |
108 | * 050103 | |
109 | * | |
110 | * MPLS support by Steven Whitehouse <steve@chygwyn.com> | |
111 | * | |
112 | * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com> | |
113 | * | |
114 | * Fixed src_mac command to set source mac of packet to value specified in | |
115 | * command by Adit Ranadive <adit.262@gmail.com> | |
116 | * | |
117 | */ | |
118 | #include <linux/sys.h> | |
119 | #include <linux/types.h> | |
120 | #include <linux/module.h> | |
121 | #include <linux/moduleparam.h> | |
122 | #include <linux/kernel.h> | |
123 | #include <linux/mutex.h> | |
124 | #include <linux/sched.h> | |
125 | #include <linux/slab.h> | |
126 | #include <linux/vmalloc.h> | |
127 | #include <linux/unistd.h> | |
128 | #include <linux/string.h> | |
129 | #include <linux/ptrace.h> | |
130 | #include <linux/errno.h> | |
131 | #include <linux/ioport.h> | |
132 | #include <linux/interrupt.h> | |
133 | #include <linux/capability.h> | |
134 | #include <linux/freezer.h> | |
135 | #include <linux/delay.h> | |
136 | #include <linux/timer.h> | |
137 | #include <linux/list.h> | |
138 | #include <linux/init.h> | |
139 | #include <linux/skbuff.h> | |
140 | #include <linux/netdevice.h> | |
141 | #include <linux/inet.h> | |
142 | #include <linux/inetdevice.h> | |
143 | #include <linux/rtnetlink.h> | |
144 | #include <linux/if_arp.h> | |
145 | #include <linux/if_vlan.h> | |
146 | #include <linux/in.h> | |
147 | #include <linux/ip.h> | |
148 | #include <linux/ipv6.h> | |
149 | #include <linux/udp.h> | |
150 | #include <linux/proc_fs.h> | |
151 | #include <linux/seq_file.h> | |
152 | #include <linux/wait.h> | |
153 | #include <linux/etherdevice.h> | |
154 | #include <linux/kthread.h> | |
155 | #include <net/net_namespace.h> | |
156 | #include <net/checksum.h> | |
157 | #include <net/ipv6.h> | |
158 | #include <net/addrconf.h> | |
159 | #ifdef CONFIG_XFRM | |
160 | #include <net/xfrm.h> | |
161 | #endif | |
162 | #include <asm/byteorder.h> | |
163 | #include <linux/rcupdate.h> | |
164 | #include <linux/bitops.h> | |
165 | #include <asm/io.h> | |
166 | #include <asm/dma.h> | |
167 | #include <asm/uaccess.h> | |
168 | #include <asm/div64.h> /* do_div */ | |
169 | #include <asm/timex.h> | |
170 | ||
171 | #define VERSION "pktgen v2.70: Packet Generator for packet performance testing.\n" | |
172 | ||
173 | #define IP_NAME_SZ 32 | |
174 | #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ | |
175 | #define MPLS_STACK_BOTTOM htonl(0x00000100) | |
176 | ||
177 | /* Device flag bits */ | |
178 | #define F_IPSRC_RND (1<<0) /* IP-Src Random */ | |
179 | #define F_IPDST_RND (1<<1) /* IP-Dst Random */ | |
180 | #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */ | |
181 | #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */ | |
182 | #define F_MACSRC_RND (1<<4) /* MAC-Src Random */ | |
183 | #define F_MACDST_RND (1<<5) /* MAC-Dst Random */ | |
184 | #define F_TXSIZE_RND (1<<6) /* Transmit size is random */ | |
185 | #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */ | |
186 | #define F_MPLS_RND (1<<8) /* Random MPLS labels */ | |
187 | #define F_VID_RND (1<<9) /* Random VLAN ID */ | |
188 | #define F_SVID_RND (1<<10) /* Random SVLAN ID */ | |
189 | #define F_FLOW_SEQ (1<<11) /* Sequential flows */ | |
190 | #define F_IPSEC_ON (1<<12) /* ipsec on for flows */ | |
191 | #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */ | |
192 | #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */ | |
193 | ||
194 | /* Thread control flag bits */ | |
195 | #define T_TERMINATE (1<<0) | |
196 | #define T_STOP (1<<1) /* Stop run */ | |
197 | #define T_RUN (1<<2) /* Start run */ | |
198 | #define T_REMDEVALL (1<<3) /* Remove all devs */ | |
199 | #define T_REMDEV (1<<4) /* Remove one dev */ | |
200 | ||
201 | /* If lock -- can be removed after some work */ | |
202 | #define if_lock(t) spin_lock(&(t->if_lock)); | |
203 | #define if_unlock(t) spin_unlock(&(t->if_lock)); | |
204 | ||
205 | /* Used to help with determining the pkts on receive */ | |
206 | #define PKTGEN_MAGIC 0xbe9be955 | |
207 | #define PG_PROC_DIR "pktgen" | |
208 | #define PGCTRL "pgctrl" | |
209 | static struct proc_dir_entry *pg_proc_dir = NULL; | |
210 | ||
211 | #define MAX_CFLOWS 65536 | |
212 | ||
213 | #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4) | |
214 | #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4) | |
215 | ||
216 | struct flow_state { | |
217 | __be32 cur_daddr; | |
218 | int count; | |
219 | #ifdef CONFIG_XFRM | |
220 | struct xfrm_state *x; | |
221 | #endif | |
222 | __u32 flags; | |
223 | }; | |
224 | ||
225 | /* flow flag bits */ | |
226 | #define F_INIT (1<<0) /* flow has been initialized */ | |
227 | ||
228 | struct pktgen_dev { | |
229 | /* | |
230 | * Try to keep frequent/infrequent used vars. separated. | |
231 | */ | |
232 | struct proc_dir_entry *entry; /* proc file */ | |
233 | struct pktgen_thread *pg_thread;/* the owner */ | |
234 | struct list_head list; /* Used for chaining in the thread's run-queue */ | |
235 | ||
236 | int running; /* if this changes to false, the test will stop */ | |
237 | ||
238 | /* If min != max, then we will either do a linear iteration, or | |
239 | * we will do a random selection from within the range. | |
240 | */ | |
241 | __u32 flags; | |
242 | int removal_mark; /* non-zero => the device is marked for | |
243 | * removal by worker thread */ | |
244 | ||
245 | int min_pkt_size; /* = ETH_ZLEN; */ | |
246 | int max_pkt_size; /* = ETH_ZLEN; */ | |
247 | int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */ | |
248 | int nfrags; | |
249 | __u32 delay_us; /* Default delay */ | |
250 | __u32 delay_ns; | |
251 | __u64 count; /* Default No packets to send */ | |
252 | __u64 sofar; /* How many pkts we've sent so far */ | |
253 | __u64 tx_bytes; /* How many bytes we've transmitted */ | |
254 | __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */ | |
255 | ||
256 | /* runtime counters relating to clone_skb */ | |
257 | __u64 next_tx_us; /* timestamp of when to tx next */ | |
258 | __u32 next_tx_ns; | |
259 | ||
260 | __u64 allocated_skbs; | |
261 | __u32 clone_count; | |
262 | int last_ok; /* Was last skb sent? | |
263 | * Or a failed transmit of some sort? This will keep | |
264 | * sequence numbers in order, for example. | |
265 | */ | |
266 | __u64 started_at; /* micro-seconds */ | |
267 | __u64 stopped_at; /* micro-seconds */ | |
268 | __u64 idle_acc; /* micro-seconds */ | |
269 | __u32 seq_num; | |
270 | ||
271 | int clone_skb; /* Use multiple SKBs during packet gen. If this number | |
272 | * is greater than 1, then that many copies of the same | |
273 | * packet will be sent before a new packet is allocated. | |
274 | * For instance, if you want to send 1024 identical packets | |
275 | * before creating a new packet, set clone_skb to 1024. | |
276 | */ | |
277 | ||
278 | char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
279 | char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
280 | char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
281 | char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */ | |
282 | ||
283 | struct in6_addr in6_saddr; | |
284 | struct in6_addr in6_daddr; | |
285 | struct in6_addr cur_in6_daddr; | |
286 | struct in6_addr cur_in6_saddr; | |
287 | /* For ranges */ | |
288 | struct in6_addr min_in6_daddr; | |
289 | struct in6_addr max_in6_daddr; | |
290 | struct in6_addr min_in6_saddr; | |
291 | struct in6_addr max_in6_saddr; | |
292 | ||
293 | /* If we're doing ranges, random or incremental, then this | |
294 | * defines the min/max for those ranges. | |
295 | */ | |
296 | __be32 saddr_min; /* inclusive, source IP address */ | |
297 | __be32 saddr_max; /* exclusive, source IP address */ | |
298 | __be32 daddr_min; /* inclusive, dest IP address */ | |
299 | __be32 daddr_max; /* exclusive, dest IP address */ | |
300 | ||
301 | __u16 udp_src_min; /* inclusive, source UDP port */ | |
302 | __u16 udp_src_max; /* exclusive, source UDP port */ | |
303 | __u16 udp_dst_min; /* inclusive, dest UDP port */ | |
304 | __u16 udp_dst_max; /* exclusive, dest UDP port */ | |
305 | ||
306 | /* DSCP + ECN */ | |
307 | __u8 tos; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */ | |
308 | __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */ | |
309 | ||
310 | /* MPLS */ | |
311 | unsigned nr_labels; /* Depth of stack, 0 = no MPLS */ | |
312 | __be32 labels[MAX_MPLS_LABELS]; | |
313 | ||
314 | /* VLAN/SVLAN (802.1Q/Q-in-Q) */ | |
315 | __u8 vlan_p; | |
316 | __u8 vlan_cfi; | |
317 | __u16 vlan_id; /* 0xffff means no vlan tag */ | |
318 | ||
319 | __u8 svlan_p; | |
320 | __u8 svlan_cfi; | |
321 | __u16 svlan_id; /* 0xffff means no svlan tag */ | |
322 | ||
323 | __u32 src_mac_count; /* How many MACs to iterate through */ | |
324 | __u32 dst_mac_count; /* How many MACs to iterate through */ | |
325 | ||
326 | unsigned char dst_mac[ETH_ALEN]; | |
327 | unsigned char src_mac[ETH_ALEN]; | |
328 | ||
329 | __u32 cur_dst_mac_offset; | |
330 | __u32 cur_src_mac_offset; | |
331 | __be32 cur_saddr; | |
332 | __be32 cur_daddr; | |
333 | __u16 cur_udp_dst; | |
334 | __u16 cur_udp_src; | |
335 | __u16 cur_queue_map; | |
336 | __u32 cur_pkt_size; | |
337 | ||
338 | __u8 hh[14]; | |
339 | /* = { | |
340 | 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB, | |
341 | ||
342 | We fill in SRC address later | |
343 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
344 | 0x08, 0x00 | |
345 | }; | |
346 | */ | |
347 | __u16 pad; /* pad out the hh struct to an even 16 bytes */ | |
348 | ||
349 | struct sk_buff *skb; /* skb we are to transmit next, mainly used for when we | |
350 | * are transmitting the same one multiple times | |
351 | */ | |
352 | struct net_device *odev; /* The out-going device. Note that the device should | |
353 | * have it's pg_info pointer pointing back to this | |
354 | * device. This will be set when the user specifies | |
355 | * the out-going device name (not when the inject is | |
356 | * started as it used to do.) | |
357 | */ | |
358 | struct flow_state *flows; | |
359 | unsigned cflows; /* Concurrent flows (config) */ | |
360 | unsigned lflow; /* Flow length (config) */ | |
361 | unsigned nflows; /* accumulated flows (stats) */ | |
362 | unsigned curfl; /* current sequenced flow (state)*/ | |
363 | ||
364 | u16 queue_map_min; | |
365 | u16 queue_map_max; | |
366 | ||
367 | #ifdef CONFIG_XFRM | |
368 | __u8 ipsmode; /* IPSEC mode (config) */ | |
369 | __u8 ipsproto; /* IPSEC type (config) */ | |
370 | #endif | |
371 | char result[512]; | |
372 | }; | |
373 | ||
374 | struct pktgen_hdr { | |
375 | __be32 pgh_magic; | |
376 | __be32 seq_num; | |
377 | __be32 tv_sec; | |
378 | __be32 tv_usec; | |
379 | }; | |
380 | ||
381 | struct pktgen_thread { | |
382 | spinlock_t if_lock; | |
383 | struct list_head if_list; /* All device here */ | |
384 | struct list_head th_list; | |
385 | struct task_struct *tsk; | |
386 | char result[512]; | |
387 | ||
388 | /* Field for thread to receive "posted" events terminate, stop ifs etc. */ | |
389 | ||
390 | u32 control; | |
391 | int cpu; | |
392 | ||
393 | wait_queue_head_t queue; | |
394 | struct completion start_done; | |
395 | }; | |
396 | ||
397 | #define REMOVE 1 | |
398 | #define FIND 0 | |
399 | ||
400 | /** Convert to micro-seconds */ | |
401 | static inline __u64 tv_to_us(const struct timeval *tv) | |
402 | { | |
403 | __u64 us = tv->tv_usec; | |
404 | us += (__u64) tv->tv_sec * (__u64) 1000000; | |
405 | return us; | |
406 | } | |
407 | ||
408 | static __u64 getCurUs(void) | |
409 | { | |
410 | struct timeval tv; | |
411 | do_gettimeofday(&tv); | |
412 | return tv_to_us(&tv); | |
413 | } | |
414 | ||
415 | /* old include end */ | |
416 | ||
417 | static const char version[] __initconst = VERSION; | |
418 | ||
419 | static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i); | |
420 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname); | |
421 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
422 | const char *ifname); | |
423 | static int pktgen_device_event(struct notifier_block *, unsigned long, void *); | |
424 | static void pktgen_run_all_threads(void); | |
425 | static void pktgen_reset_all_threads(void); | |
426 | static void pktgen_stop_all_threads_ifs(void); | |
427 | ||
428 | static void pktgen_stop(struct pktgen_thread *t); | |
429 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev); | |
430 | ||
431 | static unsigned int scan_ip6(const char *s, char ip[16]); | |
432 | static unsigned int fmt_ip6(char *s, const char ip[16]); | |
433 | ||
434 | /* Module parameters, defaults. */ | |
435 | static int pg_count_d __read_mostly = 1000; | |
436 | static int pg_delay_d __read_mostly; | |
437 | static int pg_clone_skb_d __read_mostly; | |
438 | static int debug __read_mostly; | |
439 | ||
440 | static DEFINE_MUTEX(pktgen_thread_lock); | |
441 | static LIST_HEAD(pktgen_threads); | |
442 | ||
443 | static struct notifier_block pktgen_notifier_block = { | |
444 | .notifier_call = pktgen_device_event, | |
445 | }; | |
446 | ||
447 | /* | |
448 | * /proc handling functions | |
449 | * | |
450 | */ | |
451 | ||
452 | static int pgctrl_show(struct seq_file *seq, void *v) | |
453 | { | |
454 | seq_puts(seq, VERSION); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | static ssize_t pgctrl_write(struct file *file, const char __user * buf, | |
459 | size_t count, loff_t * ppos) | |
460 | { | |
461 | int err = 0; | |
462 | char data[128]; | |
463 | ||
464 | if (!capable(CAP_NET_ADMIN)) { | |
465 | err = -EPERM; | |
466 | goto out; | |
467 | } | |
468 | ||
469 | if (count > sizeof(data)) | |
470 | count = sizeof(data); | |
471 | ||
472 | if (copy_from_user(data, buf, count)) { | |
473 | err = -EFAULT; | |
474 | goto out; | |
475 | } | |
476 | data[count - 1] = 0; /* Make string */ | |
477 | ||
478 | if (!strcmp(data, "stop")) | |
479 | pktgen_stop_all_threads_ifs(); | |
480 | ||
481 | else if (!strcmp(data, "start")) | |
482 | pktgen_run_all_threads(); | |
483 | ||
484 | else if (!strcmp(data, "reset")) | |
485 | pktgen_reset_all_threads(); | |
486 | ||
487 | else | |
488 | printk(KERN_WARNING "pktgen: Unknown command: %s\n", data); | |
489 | ||
490 | err = count; | |
491 | ||
492 | out: | |
493 | return err; | |
494 | } | |
495 | ||
496 | static int pgctrl_open(struct inode *inode, struct file *file) | |
497 | { | |
498 | return single_open(file, pgctrl_show, PDE(inode)->data); | |
499 | } | |
500 | ||
501 | static const struct file_operations pktgen_fops = { | |
502 | .owner = THIS_MODULE, | |
503 | .open = pgctrl_open, | |
504 | .read = seq_read, | |
505 | .llseek = seq_lseek, | |
506 | .write = pgctrl_write, | |
507 | .release = single_release, | |
508 | }; | |
509 | ||
510 | static int pktgen_if_show(struct seq_file *seq, void *v) | |
511 | { | |
512 | const struct pktgen_dev *pkt_dev = seq->private; | |
513 | __u64 sa; | |
514 | __u64 stopped; | |
515 | __u64 now = getCurUs(); | |
516 | ||
517 | seq_printf(seq, | |
518 | "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n", | |
519 | (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size, | |
520 | pkt_dev->max_pkt_size); | |
521 | ||
522 | seq_printf(seq, | |
523 | " frags: %d delay: %u clone_skb: %d ifname: %s\n", | |
524 | pkt_dev->nfrags, | |
525 | 1000 * pkt_dev->delay_us + pkt_dev->delay_ns, | |
526 | pkt_dev->clone_skb, pkt_dev->odev->name); | |
527 | ||
528 | seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, | |
529 | pkt_dev->lflow); | |
530 | ||
531 | seq_printf(seq, | |
532 | " queue_map_min: %u queue_map_max: %u\n", | |
533 | pkt_dev->queue_map_min, | |
534 | pkt_dev->queue_map_max); | |
535 | ||
536 | if (pkt_dev->flags & F_IPV6) { | |
537 | char b1[128], b2[128], b3[128]; | |
538 | fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr); | |
539 | fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr); | |
540 | fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr); | |
541 | seq_printf(seq, | |
542 | " saddr: %s min_saddr: %s max_saddr: %s\n", b1, | |
543 | b2, b3); | |
544 | ||
545 | fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr); | |
546 | fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr); | |
547 | fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr); | |
548 | seq_printf(seq, | |
549 | " daddr: %s min_daddr: %s max_daddr: %s\n", b1, | |
550 | b2, b3); | |
551 | ||
552 | } else | |
553 | seq_printf(seq, | |
554 | " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n", | |
555 | pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min, | |
556 | pkt_dev->src_max); | |
557 | ||
558 | seq_puts(seq, " src_mac: "); | |
559 | ||
560 | seq_printf(seq, "%pM ", | |
561 | is_zero_ether_addr(pkt_dev->src_mac) ? | |
562 | pkt_dev->odev->dev_addr : pkt_dev->src_mac); | |
563 | ||
564 | seq_printf(seq, "dst_mac: "); | |
565 | seq_printf(seq, "%pM\n", pkt_dev->dst_mac); | |
566 | ||
567 | seq_printf(seq, | |
568 | " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n", | |
569 | pkt_dev->udp_src_min, pkt_dev->udp_src_max, | |
570 | pkt_dev->udp_dst_min, pkt_dev->udp_dst_max); | |
571 | ||
572 | seq_printf(seq, | |
573 | " src_mac_count: %d dst_mac_count: %d\n", | |
574 | pkt_dev->src_mac_count, pkt_dev->dst_mac_count); | |
575 | ||
576 | if (pkt_dev->nr_labels) { | |
577 | unsigned i; | |
578 | seq_printf(seq, " mpls: "); | |
579 | for (i = 0; i < pkt_dev->nr_labels; i++) | |
580 | seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]), | |
581 | i == pkt_dev->nr_labels-1 ? "\n" : ", "); | |
582 | } | |
583 | ||
584 | if (pkt_dev->vlan_id != 0xffff) { | |
585 | seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n", | |
586 | pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi); | |
587 | } | |
588 | ||
589 | if (pkt_dev->svlan_id != 0xffff) { | |
590 | seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n", | |
591 | pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi); | |
592 | } | |
593 | ||
594 | if (pkt_dev->tos) { | |
595 | seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos); | |
596 | } | |
597 | ||
598 | if (pkt_dev->traffic_class) { | |
599 | seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class); | |
600 | } | |
601 | ||
602 | seq_printf(seq, " Flags: "); | |
603 | ||
604 | if (pkt_dev->flags & F_IPV6) | |
605 | seq_printf(seq, "IPV6 "); | |
606 | ||
607 | if (pkt_dev->flags & F_IPSRC_RND) | |
608 | seq_printf(seq, "IPSRC_RND "); | |
609 | ||
610 | if (pkt_dev->flags & F_IPDST_RND) | |
611 | seq_printf(seq, "IPDST_RND "); | |
612 | ||
613 | if (pkt_dev->flags & F_TXSIZE_RND) | |
614 | seq_printf(seq, "TXSIZE_RND "); | |
615 | ||
616 | if (pkt_dev->flags & F_UDPSRC_RND) | |
617 | seq_printf(seq, "UDPSRC_RND "); | |
618 | ||
619 | if (pkt_dev->flags & F_UDPDST_RND) | |
620 | seq_printf(seq, "UDPDST_RND "); | |
621 | ||
622 | if (pkt_dev->flags & F_MPLS_RND) | |
623 | seq_printf(seq, "MPLS_RND "); | |
624 | ||
625 | if (pkt_dev->flags & F_QUEUE_MAP_RND) | |
626 | seq_printf(seq, "QUEUE_MAP_RND "); | |
627 | ||
628 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
629 | seq_printf(seq, "QUEUE_MAP_CPU "); | |
630 | ||
631 | if (pkt_dev->cflows) { | |
632 | if (pkt_dev->flags & F_FLOW_SEQ) | |
633 | seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/ | |
634 | else | |
635 | seq_printf(seq, "FLOW_RND "); | |
636 | } | |
637 | ||
638 | #ifdef CONFIG_XFRM | |
639 | if (pkt_dev->flags & F_IPSEC_ON) | |
640 | seq_printf(seq, "IPSEC "); | |
641 | #endif | |
642 | ||
643 | if (pkt_dev->flags & F_MACSRC_RND) | |
644 | seq_printf(seq, "MACSRC_RND "); | |
645 | ||
646 | if (pkt_dev->flags & F_MACDST_RND) | |
647 | seq_printf(seq, "MACDST_RND "); | |
648 | ||
649 | if (pkt_dev->flags & F_VID_RND) | |
650 | seq_printf(seq, "VID_RND "); | |
651 | ||
652 | if (pkt_dev->flags & F_SVID_RND) | |
653 | seq_printf(seq, "SVID_RND "); | |
654 | ||
655 | seq_puts(seq, "\n"); | |
656 | ||
657 | sa = pkt_dev->started_at; | |
658 | stopped = pkt_dev->stopped_at; | |
659 | if (pkt_dev->running) | |
660 | stopped = now; /* not really stopped, more like last-running-at */ | |
661 | ||
662 | seq_printf(seq, | |
663 | "Current:\n pkts-sofar: %llu errors: %llu\n started: %lluus stopped: %lluus idle: %lluus\n", | |
664 | (unsigned long long)pkt_dev->sofar, | |
665 | (unsigned long long)pkt_dev->errors, (unsigned long long)sa, | |
666 | (unsigned long long)stopped, | |
667 | (unsigned long long)pkt_dev->idle_acc); | |
668 | ||
669 | seq_printf(seq, | |
670 | " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", | |
671 | pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset, | |
672 | pkt_dev->cur_src_mac_offset); | |
673 | ||
674 | if (pkt_dev->flags & F_IPV6) { | |
675 | char b1[128], b2[128]; | |
676 | fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr); | |
677 | fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr); | |
678 | seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1); | |
679 | } else | |
680 | seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n", | |
681 | pkt_dev->cur_saddr, pkt_dev->cur_daddr); | |
682 | ||
683 | seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", | |
684 | pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); | |
685 | ||
686 | seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map); | |
687 | ||
688 | seq_printf(seq, " flows: %u\n", pkt_dev->nflows); | |
689 | ||
690 | if (pkt_dev->result[0]) | |
691 | seq_printf(seq, "Result: %s\n", pkt_dev->result); | |
692 | else | |
693 | seq_printf(seq, "Result: Idle\n"); | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
698 | ||
699 | static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num) | |
700 | { | |
701 | int i = 0; | |
702 | *num = 0; | |
703 | ||
704 | for (; i < maxlen; i++) { | |
705 | char c; | |
706 | *num <<= 4; | |
707 | if (get_user(c, &user_buffer[i])) | |
708 | return -EFAULT; | |
709 | if ((c >= '0') && (c <= '9')) | |
710 | *num |= c - '0'; | |
711 | else if ((c >= 'a') && (c <= 'f')) | |
712 | *num |= c - 'a' + 10; | |
713 | else if ((c >= 'A') && (c <= 'F')) | |
714 | *num |= c - 'A' + 10; | |
715 | else | |
716 | break; | |
717 | } | |
718 | return i; | |
719 | } | |
720 | ||
721 | static int count_trail_chars(const char __user * user_buffer, | |
722 | unsigned int maxlen) | |
723 | { | |
724 | int i; | |
725 | ||
726 | for (i = 0; i < maxlen; i++) { | |
727 | char c; | |
728 | if (get_user(c, &user_buffer[i])) | |
729 | return -EFAULT; | |
730 | switch (c) { | |
731 | case '\"': | |
732 | case '\n': | |
733 | case '\r': | |
734 | case '\t': | |
735 | case ' ': | |
736 | case '=': | |
737 | break; | |
738 | default: | |
739 | goto done; | |
740 | } | |
741 | } | |
742 | done: | |
743 | return i; | |
744 | } | |
745 | ||
746 | static unsigned long num_arg(const char __user * user_buffer, | |
747 | unsigned long maxlen, unsigned long *num) | |
748 | { | |
749 | int i = 0; | |
750 | *num = 0; | |
751 | ||
752 | for (; i < maxlen; i++) { | |
753 | char c; | |
754 | if (get_user(c, &user_buffer[i])) | |
755 | return -EFAULT; | |
756 | if ((c >= '0') && (c <= '9')) { | |
757 | *num *= 10; | |
758 | *num += c - '0'; | |
759 | } else | |
760 | break; | |
761 | } | |
762 | return i; | |
763 | } | |
764 | ||
765 | static int strn_len(const char __user * user_buffer, unsigned int maxlen) | |
766 | { | |
767 | int i = 0; | |
768 | ||
769 | for (; i < maxlen; i++) { | |
770 | char c; | |
771 | if (get_user(c, &user_buffer[i])) | |
772 | return -EFAULT; | |
773 | switch (c) { | |
774 | case '\"': | |
775 | case '\n': | |
776 | case '\r': | |
777 | case '\t': | |
778 | case ' ': | |
779 | goto done_str; | |
780 | break; | |
781 | default: | |
782 | break; | |
783 | } | |
784 | } | |
785 | done_str: | |
786 | return i; | |
787 | } | |
788 | ||
789 | static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev) | |
790 | { | |
791 | unsigned n = 0; | |
792 | char c; | |
793 | ssize_t i = 0; | |
794 | int len; | |
795 | ||
796 | pkt_dev->nr_labels = 0; | |
797 | do { | |
798 | __u32 tmp; | |
799 | len = hex32_arg(&buffer[i], 8, &tmp); | |
800 | if (len <= 0) | |
801 | return len; | |
802 | pkt_dev->labels[n] = htonl(tmp); | |
803 | if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM) | |
804 | pkt_dev->flags |= F_MPLS_RND; | |
805 | i += len; | |
806 | if (get_user(c, &buffer[i])) | |
807 | return -EFAULT; | |
808 | i++; | |
809 | n++; | |
810 | if (n >= MAX_MPLS_LABELS) | |
811 | return -E2BIG; | |
812 | } while (c == ','); | |
813 | ||
814 | pkt_dev->nr_labels = n; | |
815 | return i; | |
816 | } | |
817 | ||
818 | static ssize_t pktgen_if_write(struct file *file, | |
819 | const char __user * user_buffer, size_t count, | |
820 | loff_t * offset) | |
821 | { | |
822 | struct seq_file *seq = (struct seq_file *)file->private_data; | |
823 | struct pktgen_dev *pkt_dev = seq->private; | |
824 | int i = 0, max, len; | |
825 | char name[16], valstr[32]; | |
826 | unsigned long value = 0; | |
827 | char *pg_result = NULL; | |
828 | int tmp = 0; | |
829 | char buf[128]; | |
830 | ||
831 | pg_result = &(pkt_dev->result[0]); | |
832 | ||
833 | if (count < 1) { | |
834 | printk(KERN_WARNING "pktgen: wrong command format\n"); | |
835 | return -EINVAL; | |
836 | } | |
837 | ||
838 | max = count - i; | |
839 | tmp = count_trail_chars(&user_buffer[i], max); | |
840 | if (tmp < 0) { | |
841 | printk(KERN_WARNING "pktgen: illegal format\n"); | |
842 | return tmp; | |
843 | } | |
844 | i += tmp; | |
845 | ||
846 | /* Read variable name */ | |
847 | ||
848 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
849 | if (len < 0) { | |
850 | return len; | |
851 | } | |
852 | memset(name, 0, sizeof(name)); | |
853 | if (copy_from_user(name, &user_buffer[i], len)) | |
854 | return -EFAULT; | |
855 | i += len; | |
856 | ||
857 | max = count - i; | |
858 | len = count_trail_chars(&user_buffer[i], max); | |
859 | if (len < 0) | |
860 | return len; | |
861 | ||
862 | i += len; | |
863 | ||
864 | if (debug) { | |
865 | char tb[count + 1]; | |
866 | if (copy_from_user(tb, user_buffer, count)) | |
867 | return -EFAULT; | |
868 | tb[count] = 0; | |
869 | printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name, | |
870 | (unsigned long)count, tb); | |
871 | } | |
872 | ||
873 | if (!strcmp(name, "min_pkt_size")) { | |
874 | len = num_arg(&user_buffer[i], 10, &value); | |
875 | if (len < 0) { | |
876 | return len; | |
877 | } | |
878 | i += len; | |
879 | if (value < 14 + 20 + 8) | |
880 | value = 14 + 20 + 8; | |
881 | if (value != pkt_dev->min_pkt_size) { | |
882 | pkt_dev->min_pkt_size = value; | |
883 | pkt_dev->cur_pkt_size = value; | |
884 | } | |
885 | sprintf(pg_result, "OK: min_pkt_size=%u", | |
886 | pkt_dev->min_pkt_size); | |
887 | return count; | |
888 | } | |
889 | ||
890 | if (!strcmp(name, "max_pkt_size")) { | |
891 | len = num_arg(&user_buffer[i], 10, &value); | |
892 | if (len < 0) { | |
893 | return len; | |
894 | } | |
895 | i += len; | |
896 | if (value < 14 + 20 + 8) | |
897 | value = 14 + 20 + 8; | |
898 | if (value != pkt_dev->max_pkt_size) { | |
899 | pkt_dev->max_pkt_size = value; | |
900 | pkt_dev->cur_pkt_size = value; | |
901 | } | |
902 | sprintf(pg_result, "OK: max_pkt_size=%u", | |
903 | pkt_dev->max_pkt_size); | |
904 | return count; | |
905 | } | |
906 | ||
907 | /* Shortcut for min = max */ | |
908 | ||
909 | if (!strcmp(name, "pkt_size")) { | |
910 | len = num_arg(&user_buffer[i], 10, &value); | |
911 | if (len < 0) { | |
912 | return len; | |
913 | } | |
914 | i += len; | |
915 | if (value < 14 + 20 + 8) | |
916 | value = 14 + 20 + 8; | |
917 | if (value != pkt_dev->min_pkt_size) { | |
918 | pkt_dev->min_pkt_size = value; | |
919 | pkt_dev->max_pkt_size = value; | |
920 | pkt_dev->cur_pkt_size = value; | |
921 | } | |
922 | sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size); | |
923 | return count; | |
924 | } | |
925 | ||
926 | if (!strcmp(name, "debug")) { | |
927 | len = num_arg(&user_buffer[i], 10, &value); | |
928 | if (len < 0) { | |
929 | return len; | |
930 | } | |
931 | i += len; | |
932 | debug = value; | |
933 | sprintf(pg_result, "OK: debug=%u", debug); | |
934 | return count; | |
935 | } | |
936 | ||
937 | if (!strcmp(name, "frags")) { | |
938 | len = num_arg(&user_buffer[i], 10, &value); | |
939 | if (len < 0) { | |
940 | return len; | |
941 | } | |
942 | i += len; | |
943 | pkt_dev->nfrags = value; | |
944 | sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); | |
945 | return count; | |
946 | } | |
947 | if (!strcmp(name, "delay")) { | |
948 | len = num_arg(&user_buffer[i], 10, &value); | |
949 | if (len < 0) { | |
950 | return len; | |
951 | } | |
952 | i += len; | |
953 | if (value == 0x7FFFFFFF) { | |
954 | pkt_dev->delay_us = 0x7FFFFFFF; | |
955 | pkt_dev->delay_ns = 0; | |
956 | } else { | |
957 | pkt_dev->delay_us = value / 1000; | |
958 | pkt_dev->delay_ns = value % 1000; | |
959 | } | |
960 | sprintf(pg_result, "OK: delay=%u", | |
961 | 1000 * pkt_dev->delay_us + pkt_dev->delay_ns); | |
962 | return count; | |
963 | } | |
964 | if (!strcmp(name, "udp_src_min")) { | |
965 | len = num_arg(&user_buffer[i], 10, &value); | |
966 | if (len < 0) { | |
967 | return len; | |
968 | } | |
969 | i += len; | |
970 | if (value != pkt_dev->udp_src_min) { | |
971 | pkt_dev->udp_src_min = value; | |
972 | pkt_dev->cur_udp_src = value; | |
973 | } | |
974 | sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min); | |
975 | return count; | |
976 | } | |
977 | if (!strcmp(name, "udp_dst_min")) { | |
978 | len = num_arg(&user_buffer[i], 10, &value); | |
979 | if (len < 0) { | |
980 | return len; | |
981 | } | |
982 | i += len; | |
983 | if (value != pkt_dev->udp_dst_min) { | |
984 | pkt_dev->udp_dst_min = value; | |
985 | pkt_dev->cur_udp_dst = value; | |
986 | } | |
987 | sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min); | |
988 | return count; | |
989 | } | |
990 | if (!strcmp(name, "udp_src_max")) { | |
991 | len = num_arg(&user_buffer[i], 10, &value); | |
992 | if (len < 0) { | |
993 | return len; | |
994 | } | |
995 | i += len; | |
996 | if (value != pkt_dev->udp_src_max) { | |
997 | pkt_dev->udp_src_max = value; | |
998 | pkt_dev->cur_udp_src = value; | |
999 | } | |
1000 | sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max); | |
1001 | return count; | |
1002 | } | |
1003 | if (!strcmp(name, "udp_dst_max")) { | |
1004 | len = num_arg(&user_buffer[i], 10, &value); | |
1005 | if (len < 0) { | |
1006 | return len; | |
1007 | } | |
1008 | i += len; | |
1009 | if (value != pkt_dev->udp_dst_max) { | |
1010 | pkt_dev->udp_dst_max = value; | |
1011 | pkt_dev->cur_udp_dst = value; | |
1012 | } | |
1013 | sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max); | |
1014 | return count; | |
1015 | } | |
1016 | if (!strcmp(name, "clone_skb")) { | |
1017 | len = num_arg(&user_buffer[i], 10, &value); | |
1018 | if (len < 0) { | |
1019 | return len; | |
1020 | } | |
1021 | i += len; | |
1022 | pkt_dev->clone_skb = value; | |
1023 | ||
1024 | sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb); | |
1025 | return count; | |
1026 | } | |
1027 | if (!strcmp(name, "count")) { | |
1028 | len = num_arg(&user_buffer[i], 10, &value); | |
1029 | if (len < 0) { | |
1030 | return len; | |
1031 | } | |
1032 | i += len; | |
1033 | pkt_dev->count = value; | |
1034 | sprintf(pg_result, "OK: count=%llu", | |
1035 | (unsigned long long)pkt_dev->count); | |
1036 | return count; | |
1037 | } | |
1038 | if (!strcmp(name, "src_mac_count")) { | |
1039 | len = num_arg(&user_buffer[i], 10, &value); | |
1040 | if (len < 0) { | |
1041 | return len; | |
1042 | } | |
1043 | i += len; | |
1044 | if (pkt_dev->src_mac_count != value) { | |
1045 | pkt_dev->src_mac_count = value; | |
1046 | pkt_dev->cur_src_mac_offset = 0; | |
1047 | } | |
1048 | sprintf(pg_result, "OK: src_mac_count=%d", | |
1049 | pkt_dev->src_mac_count); | |
1050 | return count; | |
1051 | } | |
1052 | if (!strcmp(name, "dst_mac_count")) { | |
1053 | len = num_arg(&user_buffer[i], 10, &value); | |
1054 | if (len < 0) { | |
1055 | return len; | |
1056 | } | |
1057 | i += len; | |
1058 | if (pkt_dev->dst_mac_count != value) { | |
1059 | pkt_dev->dst_mac_count = value; | |
1060 | pkt_dev->cur_dst_mac_offset = 0; | |
1061 | } | |
1062 | sprintf(pg_result, "OK: dst_mac_count=%d", | |
1063 | pkt_dev->dst_mac_count); | |
1064 | return count; | |
1065 | } | |
1066 | if (!strcmp(name, "flag")) { | |
1067 | char f[32]; | |
1068 | memset(f, 0, 32); | |
1069 | len = strn_len(&user_buffer[i], sizeof(f) - 1); | |
1070 | if (len < 0) { | |
1071 | return len; | |
1072 | } | |
1073 | if (copy_from_user(f, &user_buffer[i], len)) | |
1074 | return -EFAULT; | |
1075 | i += len; | |
1076 | if (strcmp(f, "IPSRC_RND") == 0) | |
1077 | pkt_dev->flags |= F_IPSRC_RND; | |
1078 | ||
1079 | else if (strcmp(f, "!IPSRC_RND") == 0) | |
1080 | pkt_dev->flags &= ~F_IPSRC_RND; | |
1081 | ||
1082 | else if (strcmp(f, "TXSIZE_RND") == 0) | |
1083 | pkt_dev->flags |= F_TXSIZE_RND; | |
1084 | ||
1085 | else if (strcmp(f, "!TXSIZE_RND") == 0) | |
1086 | pkt_dev->flags &= ~F_TXSIZE_RND; | |
1087 | ||
1088 | else if (strcmp(f, "IPDST_RND") == 0) | |
1089 | pkt_dev->flags |= F_IPDST_RND; | |
1090 | ||
1091 | else if (strcmp(f, "!IPDST_RND") == 0) | |
1092 | pkt_dev->flags &= ~F_IPDST_RND; | |
1093 | ||
1094 | else if (strcmp(f, "UDPSRC_RND") == 0) | |
1095 | pkt_dev->flags |= F_UDPSRC_RND; | |
1096 | ||
1097 | else if (strcmp(f, "!UDPSRC_RND") == 0) | |
1098 | pkt_dev->flags &= ~F_UDPSRC_RND; | |
1099 | ||
1100 | else if (strcmp(f, "UDPDST_RND") == 0) | |
1101 | pkt_dev->flags |= F_UDPDST_RND; | |
1102 | ||
1103 | else if (strcmp(f, "!UDPDST_RND") == 0) | |
1104 | pkt_dev->flags &= ~F_UDPDST_RND; | |
1105 | ||
1106 | else if (strcmp(f, "MACSRC_RND") == 0) | |
1107 | pkt_dev->flags |= F_MACSRC_RND; | |
1108 | ||
1109 | else if (strcmp(f, "!MACSRC_RND") == 0) | |
1110 | pkt_dev->flags &= ~F_MACSRC_RND; | |
1111 | ||
1112 | else if (strcmp(f, "MACDST_RND") == 0) | |
1113 | pkt_dev->flags |= F_MACDST_RND; | |
1114 | ||
1115 | else if (strcmp(f, "!MACDST_RND") == 0) | |
1116 | pkt_dev->flags &= ~F_MACDST_RND; | |
1117 | ||
1118 | else if (strcmp(f, "MPLS_RND") == 0) | |
1119 | pkt_dev->flags |= F_MPLS_RND; | |
1120 | ||
1121 | else if (strcmp(f, "!MPLS_RND") == 0) | |
1122 | pkt_dev->flags &= ~F_MPLS_RND; | |
1123 | ||
1124 | else if (strcmp(f, "VID_RND") == 0) | |
1125 | pkt_dev->flags |= F_VID_RND; | |
1126 | ||
1127 | else if (strcmp(f, "!VID_RND") == 0) | |
1128 | pkt_dev->flags &= ~F_VID_RND; | |
1129 | ||
1130 | else if (strcmp(f, "SVID_RND") == 0) | |
1131 | pkt_dev->flags |= F_SVID_RND; | |
1132 | ||
1133 | else if (strcmp(f, "!SVID_RND") == 0) | |
1134 | pkt_dev->flags &= ~F_SVID_RND; | |
1135 | ||
1136 | else if (strcmp(f, "FLOW_SEQ") == 0) | |
1137 | pkt_dev->flags |= F_FLOW_SEQ; | |
1138 | ||
1139 | else if (strcmp(f, "QUEUE_MAP_RND") == 0) | |
1140 | pkt_dev->flags |= F_QUEUE_MAP_RND; | |
1141 | ||
1142 | else if (strcmp(f, "!QUEUE_MAP_RND") == 0) | |
1143 | pkt_dev->flags &= ~F_QUEUE_MAP_RND; | |
1144 | ||
1145 | else if (strcmp(f, "QUEUE_MAP_CPU") == 0) | |
1146 | pkt_dev->flags |= F_QUEUE_MAP_CPU; | |
1147 | ||
1148 | else if (strcmp(f, "!QUEUE_MAP_CPU") == 0) | |
1149 | pkt_dev->flags &= ~F_QUEUE_MAP_CPU; | |
1150 | #ifdef CONFIG_XFRM | |
1151 | else if (strcmp(f, "IPSEC") == 0) | |
1152 | pkt_dev->flags |= F_IPSEC_ON; | |
1153 | #endif | |
1154 | ||
1155 | else if (strcmp(f, "!IPV6") == 0) | |
1156 | pkt_dev->flags &= ~F_IPV6; | |
1157 | ||
1158 | else { | |
1159 | sprintf(pg_result, | |
1160 | "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", | |
1161 | f, | |
1162 | "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, " | |
1163 | "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n"); | |
1164 | return count; | |
1165 | } | |
1166 | sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags); | |
1167 | return count; | |
1168 | } | |
1169 | if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) { | |
1170 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1); | |
1171 | if (len < 0) { | |
1172 | return len; | |
1173 | } | |
1174 | ||
1175 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1176 | return -EFAULT; | |
1177 | buf[len] = 0; | |
1178 | if (strcmp(buf, pkt_dev->dst_min) != 0) { | |
1179 | memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min)); | |
1180 | strncpy(pkt_dev->dst_min, buf, len); | |
1181 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
1182 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
1183 | } | |
1184 | if (debug) | |
1185 | printk(KERN_DEBUG "pktgen: dst_min set to: %s\n", | |
1186 | pkt_dev->dst_min); | |
1187 | i += len; | |
1188 | sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); | |
1189 | return count; | |
1190 | } | |
1191 | if (!strcmp(name, "dst_max")) { | |
1192 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1); | |
1193 | if (len < 0) { | |
1194 | return len; | |
1195 | } | |
1196 | ||
1197 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1198 | return -EFAULT; | |
1199 | ||
1200 | buf[len] = 0; | |
1201 | if (strcmp(buf, pkt_dev->dst_max) != 0) { | |
1202 | memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max)); | |
1203 | strncpy(pkt_dev->dst_max, buf, len); | |
1204 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
1205 | pkt_dev->cur_daddr = pkt_dev->daddr_max; | |
1206 | } | |
1207 | if (debug) | |
1208 | printk(KERN_DEBUG "pktgen: dst_max set to: %s\n", | |
1209 | pkt_dev->dst_max); | |
1210 | i += len; | |
1211 | sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); | |
1212 | return count; | |
1213 | } | |
1214 | if (!strcmp(name, "dst6")) { | |
1215 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
1216 | if (len < 0) | |
1217 | return len; | |
1218 | ||
1219 | pkt_dev->flags |= F_IPV6; | |
1220 | ||
1221 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1222 | return -EFAULT; | |
1223 | buf[len] = 0; | |
1224 | ||
1225 | scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); | |
1226 | fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr); | |
1227 | ||
1228 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr); | |
1229 | ||
1230 | if (debug) | |
1231 | printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf); | |
1232 | ||
1233 | i += len; | |
1234 | sprintf(pg_result, "OK: dst6=%s", buf); | |
1235 | return count; | |
1236 | } | |
1237 | if (!strcmp(name, "dst6_min")) { | |
1238 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
1239 | if (len < 0) | |
1240 | return len; | |
1241 | ||
1242 | pkt_dev->flags |= F_IPV6; | |
1243 | ||
1244 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1245 | return -EFAULT; | |
1246 | buf[len] = 0; | |
1247 | ||
1248 | scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); | |
1249 | fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); | |
1250 | ||
1251 | ipv6_addr_copy(&pkt_dev->cur_in6_daddr, | |
1252 | &pkt_dev->min_in6_daddr); | |
1253 | if (debug) | |
1254 | printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf); | |
1255 | ||
1256 | i += len; | |
1257 | sprintf(pg_result, "OK: dst6_min=%s", buf); | |
1258 | return count; | |
1259 | } | |
1260 | if (!strcmp(name, "dst6_max")) { | |
1261 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
1262 | if (len < 0) | |
1263 | return len; | |
1264 | ||
1265 | pkt_dev->flags |= F_IPV6; | |
1266 | ||
1267 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1268 | return -EFAULT; | |
1269 | buf[len] = 0; | |
1270 | ||
1271 | scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); | |
1272 | fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); | |
1273 | ||
1274 | if (debug) | |
1275 | printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf); | |
1276 | ||
1277 | i += len; | |
1278 | sprintf(pg_result, "OK: dst6_max=%s", buf); | |
1279 | return count; | |
1280 | } | |
1281 | if (!strcmp(name, "src6")) { | |
1282 | len = strn_len(&user_buffer[i], sizeof(buf) - 1); | |
1283 | if (len < 0) | |
1284 | return len; | |
1285 | ||
1286 | pkt_dev->flags |= F_IPV6; | |
1287 | ||
1288 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1289 | return -EFAULT; | |
1290 | buf[len] = 0; | |
1291 | ||
1292 | scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); | |
1293 | fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr); | |
1294 | ||
1295 | ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr); | |
1296 | ||
1297 | if (debug) | |
1298 | printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf); | |
1299 | ||
1300 | i += len; | |
1301 | sprintf(pg_result, "OK: src6=%s", buf); | |
1302 | return count; | |
1303 | } | |
1304 | if (!strcmp(name, "src_min")) { | |
1305 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1); | |
1306 | if (len < 0) { | |
1307 | return len; | |
1308 | } | |
1309 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1310 | return -EFAULT; | |
1311 | buf[len] = 0; | |
1312 | if (strcmp(buf, pkt_dev->src_min) != 0) { | |
1313 | memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min)); | |
1314 | strncpy(pkt_dev->src_min, buf, len); | |
1315 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
1316 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
1317 | } | |
1318 | if (debug) | |
1319 | printk(KERN_DEBUG "pktgen: src_min set to: %s\n", | |
1320 | pkt_dev->src_min); | |
1321 | i += len; | |
1322 | sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min); | |
1323 | return count; | |
1324 | } | |
1325 | if (!strcmp(name, "src_max")) { | |
1326 | len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1); | |
1327 | if (len < 0) { | |
1328 | return len; | |
1329 | } | |
1330 | if (copy_from_user(buf, &user_buffer[i], len)) | |
1331 | return -EFAULT; | |
1332 | buf[len] = 0; | |
1333 | if (strcmp(buf, pkt_dev->src_max) != 0) { | |
1334 | memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max)); | |
1335 | strncpy(pkt_dev->src_max, buf, len); | |
1336 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
1337 | pkt_dev->cur_saddr = pkt_dev->saddr_max; | |
1338 | } | |
1339 | if (debug) | |
1340 | printk(KERN_DEBUG "pktgen: src_max set to: %s\n", | |
1341 | pkt_dev->src_max); | |
1342 | i += len; | |
1343 | sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max); | |
1344 | return count; | |
1345 | } | |
1346 | if (!strcmp(name, "dst_mac")) { | |
1347 | char *v = valstr; | |
1348 | unsigned char old_dmac[ETH_ALEN]; | |
1349 | unsigned char *m = pkt_dev->dst_mac; | |
1350 | memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN); | |
1351 | ||
1352 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); | |
1353 | if (len < 0) { | |
1354 | return len; | |
1355 | } | |
1356 | memset(valstr, 0, sizeof(valstr)); | |
1357 | if (copy_from_user(valstr, &user_buffer[i], len)) | |
1358 | return -EFAULT; | |
1359 | i += len; | |
1360 | ||
1361 | for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) { | |
1362 | if (*v >= '0' && *v <= '9') { | |
1363 | *m *= 16; | |
1364 | *m += *v - '0'; | |
1365 | } | |
1366 | if (*v >= 'A' && *v <= 'F') { | |
1367 | *m *= 16; | |
1368 | *m += *v - 'A' + 10; | |
1369 | } | |
1370 | if (*v >= 'a' && *v <= 'f') { | |
1371 | *m *= 16; | |
1372 | *m += *v - 'a' + 10; | |
1373 | } | |
1374 | if (*v == ':') { | |
1375 | m++; | |
1376 | *m = 0; | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | /* Set up Dest MAC */ | |
1381 | if (compare_ether_addr(old_dmac, pkt_dev->dst_mac)) | |
1382 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); | |
1383 | ||
1384 | sprintf(pg_result, "OK: dstmac"); | |
1385 | return count; | |
1386 | } | |
1387 | if (!strcmp(name, "src_mac")) { | |
1388 | char *v = valstr; | |
1389 | unsigned char old_smac[ETH_ALEN]; | |
1390 | unsigned char *m = pkt_dev->src_mac; | |
1391 | ||
1392 | memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN); | |
1393 | ||
1394 | len = strn_len(&user_buffer[i], sizeof(valstr) - 1); | |
1395 | if (len < 0) { | |
1396 | return len; | |
1397 | } | |
1398 | memset(valstr, 0, sizeof(valstr)); | |
1399 | if (copy_from_user(valstr, &user_buffer[i], len)) | |
1400 | return -EFAULT; | |
1401 | i += len; | |
1402 | ||
1403 | for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) { | |
1404 | if (*v >= '0' && *v <= '9') { | |
1405 | *m *= 16; | |
1406 | *m += *v - '0'; | |
1407 | } | |
1408 | if (*v >= 'A' && *v <= 'F') { | |
1409 | *m *= 16; | |
1410 | *m += *v - 'A' + 10; | |
1411 | } | |
1412 | if (*v >= 'a' && *v <= 'f') { | |
1413 | *m *= 16; | |
1414 | *m += *v - 'a' + 10; | |
1415 | } | |
1416 | if (*v == ':') { | |
1417 | m++; | |
1418 | *m = 0; | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | /* Set up Src MAC */ | |
1423 | if (compare_ether_addr(old_smac, pkt_dev->src_mac)) | |
1424 | memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN); | |
1425 | ||
1426 | sprintf(pg_result, "OK: srcmac"); | |
1427 | return count; | |
1428 | } | |
1429 | ||
1430 | if (!strcmp(name, "clear_counters")) { | |
1431 | pktgen_clear_counters(pkt_dev); | |
1432 | sprintf(pg_result, "OK: Clearing counters.\n"); | |
1433 | return count; | |
1434 | } | |
1435 | ||
1436 | if (!strcmp(name, "flows")) { | |
1437 | len = num_arg(&user_buffer[i], 10, &value); | |
1438 | if (len < 0) { | |
1439 | return len; | |
1440 | } | |
1441 | i += len; | |
1442 | if (value > MAX_CFLOWS) | |
1443 | value = MAX_CFLOWS; | |
1444 | ||
1445 | pkt_dev->cflows = value; | |
1446 | sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows); | |
1447 | return count; | |
1448 | } | |
1449 | ||
1450 | if (!strcmp(name, "flowlen")) { | |
1451 | len = num_arg(&user_buffer[i], 10, &value); | |
1452 | if (len < 0) { | |
1453 | return len; | |
1454 | } | |
1455 | i += len; | |
1456 | pkt_dev->lflow = value; | |
1457 | sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow); | |
1458 | return count; | |
1459 | } | |
1460 | ||
1461 | if (!strcmp(name, "queue_map_min")) { | |
1462 | len = num_arg(&user_buffer[i], 5, &value); | |
1463 | if (len < 0) { | |
1464 | return len; | |
1465 | } | |
1466 | i += len; | |
1467 | pkt_dev->queue_map_min = value; | |
1468 | sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min); | |
1469 | return count; | |
1470 | } | |
1471 | ||
1472 | if (!strcmp(name, "queue_map_max")) { | |
1473 | len = num_arg(&user_buffer[i], 5, &value); | |
1474 | if (len < 0) { | |
1475 | return len; | |
1476 | } | |
1477 | i += len; | |
1478 | pkt_dev->queue_map_max = value; | |
1479 | sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max); | |
1480 | return count; | |
1481 | } | |
1482 | ||
1483 | if (!strcmp(name, "mpls")) { | |
1484 | unsigned n, cnt; | |
1485 | ||
1486 | len = get_labels(&user_buffer[i], pkt_dev); | |
1487 | if (len < 0) | |
1488 | return len; | |
1489 | i += len; | |
1490 | cnt = sprintf(pg_result, "OK: mpls="); | |
1491 | for (n = 0; n < pkt_dev->nr_labels; n++) | |
1492 | cnt += sprintf(pg_result + cnt, | |
1493 | "%08x%s", ntohl(pkt_dev->labels[n]), | |
1494 | n == pkt_dev->nr_labels-1 ? "" : ","); | |
1495 | ||
1496 | if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) { | |
1497 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1498 | pkt_dev->svlan_id = 0xffff; | |
1499 | ||
1500 | if (debug) | |
1501 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n"); | |
1502 | } | |
1503 | return count; | |
1504 | } | |
1505 | ||
1506 | if (!strcmp(name, "vlan_id")) { | |
1507 | len = num_arg(&user_buffer[i], 4, &value); | |
1508 | if (len < 0) { | |
1509 | return len; | |
1510 | } | |
1511 | i += len; | |
1512 | if (value <= 4095) { | |
1513 | pkt_dev->vlan_id = value; /* turn on VLAN */ | |
1514 | ||
1515 | if (debug) | |
1516 | printk(KERN_DEBUG "pktgen: VLAN turned on\n"); | |
1517 | ||
1518 | if (debug && pkt_dev->nr_labels) | |
1519 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); | |
1520 | ||
1521 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1522 | sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id); | |
1523 | } else { | |
1524 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1525 | pkt_dev->svlan_id = 0xffff; | |
1526 | ||
1527 | if (debug) | |
1528 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); | |
1529 | } | |
1530 | return count; | |
1531 | } | |
1532 | ||
1533 | if (!strcmp(name, "vlan_p")) { | |
1534 | len = num_arg(&user_buffer[i], 1, &value); | |
1535 | if (len < 0) { | |
1536 | return len; | |
1537 | } | |
1538 | i += len; | |
1539 | if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) { | |
1540 | pkt_dev->vlan_p = value; | |
1541 | sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p); | |
1542 | } else { | |
1543 | sprintf(pg_result, "ERROR: vlan_p must be 0-7"); | |
1544 | } | |
1545 | return count; | |
1546 | } | |
1547 | ||
1548 | if (!strcmp(name, "vlan_cfi")) { | |
1549 | len = num_arg(&user_buffer[i], 1, &value); | |
1550 | if (len < 0) { | |
1551 | return len; | |
1552 | } | |
1553 | i += len; | |
1554 | if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) { | |
1555 | pkt_dev->vlan_cfi = value; | |
1556 | sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi); | |
1557 | } else { | |
1558 | sprintf(pg_result, "ERROR: vlan_cfi must be 0-1"); | |
1559 | } | |
1560 | return count; | |
1561 | } | |
1562 | ||
1563 | if (!strcmp(name, "svlan_id")) { | |
1564 | len = num_arg(&user_buffer[i], 4, &value); | |
1565 | if (len < 0) { | |
1566 | return len; | |
1567 | } | |
1568 | i += len; | |
1569 | if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) { | |
1570 | pkt_dev->svlan_id = value; /* turn on SVLAN */ | |
1571 | ||
1572 | if (debug) | |
1573 | printk(KERN_DEBUG "pktgen: SVLAN turned on\n"); | |
1574 | ||
1575 | if (debug && pkt_dev->nr_labels) | |
1576 | printk(KERN_DEBUG "pktgen: MPLS auto turned off\n"); | |
1577 | ||
1578 | pkt_dev->nr_labels = 0; /* turn off MPLS */ | |
1579 | sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id); | |
1580 | } else { | |
1581 | pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */ | |
1582 | pkt_dev->svlan_id = 0xffff; | |
1583 | ||
1584 | if (debug) | |
1585 | printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n"); | |
1586 | } | |
1587 | return count; | |
1588 | } | |
1589 | ||
1590 | if (!strcmp(name, "svlan_p")) { | |
1591 | len = num_arg(&user_buffer[i], 1, &value); | |
1592 | if (len < 0) { | |
1593 | return len; | |
1594 | } | |
1595 | i += len; | |
1596 | if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) { | |
1597 | pkt_dev->svlan_p = value; | |
1598 | sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p); | |
1599 | } else { | |
1600 | sprintf(pg_result, "ERROR: svlan_p must be 0-7"); | |
1601 | } | |
1602 | return count; | |
1603 | } | |
1604 | ||
1605 | if (!strcmp(name, "svlan_cfi")) { | |
1606 | len = num_arg(&user_buffer[i], 1, &value); | |
1607 | if (len < 0) { | |
1608 | return len; | |
1609 | } | |
1610 | i += len; | |
1611 | if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) { | |
1612 | pkt_dev->svlan_cfi = value; | |
1613 | sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi); | |
1614 | } else { | |
1615 | sprintf(pg_result, "ERROR: svlan_cfi must be 0-1"); | |
1616 | } | |
1617 | return count; | |
1618 | } | |
1619 | ||
1620 | if (!strcmp(name, "tos")) { | |
1621 | __u32 tmp_value = 0; | |
1622 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
1623 | if (len < 0) { | |
1624 | return len; | |
1625 | } | |
1626 | i += len; | |
1627 | if (len == 2) { | |
1628 | pkt_dev->tos = tmp_value; | |
1629 | sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos); | |
1630 | } else { | |
1631 | sprintf(pg_result, "ERROR: tos must be 00-ff"); | |
1632 | } | |
1633 | return count; | |
1634 | } | |
1635 | ||
1636 | if (!strcmp(name, "traffic_class")) { | |
1637 | __u32 tmp_value = 0; | |
1638 | len = hex32_arg(&user_buffer[i], 2, &tmp_value); | |
1639 | if (len < 0) { | |
1640 | return len; | |
1641 | } | |
1642 | i += len; | |
1643 | if (len == 2) { | |
1644 | pkt_dev->traffic_class = tmp_value; | |
1645 | sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class); | |
1646 | } else { | |
1647 | sprintf(pg_result, "ERROR: traffic_class must be 00-ff"); | |
1648 | } | |
1649 | return count; | |
1650 | } | |
1651 | ||
1652 | sprintf(pkt_dev->result, "No such parameter \"%s\"", name); | |
1653 | return -EINVAL; | |
1654 | } | |
1655 | ||
1656 | static int pktgen_if_open(struct inode *inode, struct file *file) | |
1657 | { | |
1658 | return single_open(file, pktgen_if_show, PDE(inode)->data); | |
1659 | } | |
1660 | ||
1661 | static const struct file_operations pktgen_if_fops = { | |
1662 | .owner = THIS_MODULE, | |
1663 | .open = pktgen_if_open, | |
1664 | .read = seq_read, | |
1665 | .llseek = seq_lseek, | |
1666 | .write = pktgen_if_write, | |
1667 | .release = single_release, | |
1668 | }; | |
1669 | ||
1670 | static int pktgen_thread_show(struct seq_file *seq, void *v) | |
1671 | { | |
1672 | struct pktgen_thread *t = seq->private; | |
1673 | const struct pktgen_dev *pkt_dev; | |
1674 | ||
1675 | BUG_ON(!t); | |
1676 | ||
1677 | seq_printf(seq, "Running: "); | |
1678 | ||
1679 | if_lock(t); | |
1680 | list_for_each_entry(pkt_dev, &t->if_list, list) | |
1681 | if (pkt_dev->running) | |
1682 | seq_printf(seq, "%s ", pkt_dev->odev->name); | |
1683 | ||
1684 | seq_printf(seq, "\nStopped: "); | |
1685 | ||
1686 | list_for_each_entry(pkt_dev, &t->if_list, list) | |
1687 | if (!pkt_dev->running) | |
1688 | seq_printf(seq, "%s ", pkt_dev->odev->name); | |
1689 | ||
1690 | if (t->result[0]) | |
1691 | seq_printf(seq, "\nResult: %s\n", t->result); | |
1692 | else | |
1693 | seq_printf(seq, "\nResult: NA\n"); | |
1694 | ||
1695 | if_unlock(t); | |
1696 | ||
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | static ssize_t pktgen_thread_write(struct file *file, | |
1701 | const char __user * user_buffer, | |
1702 | size_t count, loff_t * offset) | |
1703 | { | |
1704 | struct seq_file *seq = (struct seq_file *)file->private_data; | |
1705 | struct pktgen_thread *t = seq->private; | |
1706 | int i = 0, max, len, ret; | |
1707 | char name[40]; | |
1708 | char *pg_result; | |
1709 | ||
1710 | if (count < 1) { | |
1711 | // sprintf(pg_result, "Wrong command format"); | |
1712 | return -EINVAL; | |
1713 | } | |
1714 | ||
1715 | max = count - i; | |
1716 | len = count_trail_chars(&user_buffer[i], max); | |
1717 | if (len < 0) | |
1718 | return len; | |
1719 | ||
1720 | i += len; | |
1721 | ||
1722 | /* Read variable name */ | |
1723 | ||
1724 | len = strn_len(&user_buffer[i], sizeof(name) - 1); | |
1725 | if (len < 0) | |
1726 | return len; | |
1727 | ||
1728 | memset(name, 0, sizeof(name)); | |
1729 | if (copy_from_user(name, &user_buffer[i], len)) | |
1730 | return -EFAULT; | |
1731 | i += len; | |
1732 | ||
1733 | max = count - i; | |
1734 | len = count_trail_chars(&user_buffer[i], max); | |
1735 | if (len < 0) | |
1736 | return len; | |
1737 | ||
1738 | i += len; | |
1739 | ||
1740 | if (debug) | |
1741 | printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n", | |
1742 | name, (unsigned long)count); | |
1743 | ||
1744 | if (!t) { | |
1745 | printk(KERN_ERR "pktgen: ERROR: No thread\n"); | |
1746 | ret = -EINVAL; | |
1747 | goto out; | |
1748 | } | |
1749 | ||
1750 | pg_result = &(t->result[0]); | |
1751 | ||
1752 | if (!strcmp(name, "add_device")) { | |
1753 | char f[32]; | |
1754 | memset(f, 0, 32); | |
1755 | len = strn_len(&user_buffer[i], sizeof(f) - 1); | |
1756 | if (len < 0) { | |
1757 | ret = len; | |
1758 | goto out; | |
1759 | } | |
1760 | if (copy_from_user(f, &user_buffer[i], len)) | |
1761 | return -EFAULT; | |
1762 | i += len; | |
1763 | mutex_lock(&pktgen_thread_lock); | |
1764 | pktgen_add_device(t, f); | |
1765 | mutex_unlock(&pktgen_thread_lock); | |
1766 | ret = count; | |
1767 | sprintf(pg_result, "OK: add_device=%s", f); | |
1768 | goto out; | |
1769 | } | |
1770 | ||
1771 | if (!strcmp(name, "rem_device_all")) { | |
1772 | mutex_lock(&pktgen_thread_lock); | |
1773 | t->control |= T_REMDEVALL; | |
1774 | mutex_unlock(&pktgen_thread_lock); | |
1775 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ | |
1776 | ret = count; | |
1777 | sprintf(pg_result, "OK: rem_device_all"); | |
1778 | goto out; | |
1779 | } | |
1780 | ||
1781 | if (!strcmp(name, "max_before_softirq")) { | |
1782 | sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use"); | |
1783 | ret = count; | |
1784 | goto out; | |
1785 | } | |
1786 | ||
1787 | ret = -EINVAL; | |
1788 | out: | |
1789 | return ret; | |
1790 | } | |
1791 | ||
1792 | static int pktgen_thread_open(struct inode *inode, struct file *file) | |
1793 | { | |
1794 | return single_open(file, pktgen_thread_show, PDE(inode)->data); | |
1795 | } | |
1796 | ||
1797 | static const struct file_operations pktgen_thread_fops = { | |
1798 | .owner = THIS_MODULE, | |
1799 | .open = pktgen_thread_open, | |
1800 | .read = seq_read, | |
1801 | .llseek = seq_lseek, | |
1802 | .write = pktgen_thread_write, | |
1803 | .release = single_release, | |
1804 | }; | |
1805 | ||
1806 | /* Think find or remove for NN */ | |
1807 | static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove) | |
1808 | { | |
1809 | struct pktgen_thread *t; | |
1810 | struct pktgen_dev *pkt_dev = NULL; | |
1811 | ||
1812 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1813 | pkt_dev = pktgen_find_dev(t, ifname); | |
1814 | if (pkt_dev) { | |
1815 | if (remove) { | |
1816 | if_lock(t); | |
1817 | pkt_dev->removal_mark = 1; | |
1818 | t->control |= T_REMDEV; | |
1819 | if_unlock(t); | |
1820 | } | |
1821 | break; | |
1822 | } | |
1823 | } | |
1824 | return pkt_dev; | |
1825 | } | |
1826 | ||
1827 | /* | |
1828 | * mark a device for removal | |
1829 | */ | |
1830 | static void pktgen_mark_device(const char *ifname) | |
1831 | { | |
1832 | struct pktgen_dev *pkt_dev = NULL; | |
1833 | const int max_tries = 10, msec_per_try = 125; | |
1834 | int i = 0; | |
1835 | ||
1836 | mutex_lock(&pktgen_thread_lock); | |
1837 | pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname); | |
1838 | ||
1839 | while (1) { | |
1840 | ||
1841 | pkt_dev = __pktgen_NN_threads(ifname, REMOVE); | |
1842 | if (pkt_dev == NULL) | |
1843 | break; /* success */ | |
1844 | ||
1845 | mutex_unlock(&pktgen_thread_lock); | |
1846 | pr_debug("pktgen: pktgen_mark_device waiting for %s " | |
1847 | "to disappear....\n", ifname); | |
1848 | schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try)); | |
1849 | mutex_lock(&pktgen_thread_lock); | |
1850 | ||
1851 | if (++i >= max_tries) { | |
1852 | printk(KERN_ERR "pktgen_mark_device: timed out after " | |
1853 | "waiting %d msec for device %s to be removed\n", | |
1854 | msec_per_try * i, ifname); | |
1855 | break; | |
1856 | } | |
1857 | ||
1858 | } | |
1859 | ||
1860 | mutex_unlock(&pktgen_thread_lock); | |
1861 | } | |
1862 | ||
1863 | static void pktgen_change_name(struct net_device *dev) | |
1864 | { | |
1865 | struct pktgen_thread *t; | |
1866 | ||
1867 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
1868 | struct pktgen_dev *pkt_dev; | |
1869 | ||
1870 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
1871 | if (pkt_dev->odev != dev) | |
1872 | continue; | |
1873 | ||
1874 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
1875 | ||
1876 | pkt_dev->entry = create_proc_entry(dev->name, 0600, | |
1877 | pg_proc_dir); | |
1878 | if (!pkt_dev->entry) | |
1879 | printk(KERN_ERR "pktgen: can't move proc " | |
1880 | " entry for '%s'\n", dev->name); | |
1881 | break; | |
1882 | } | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | static int pktgen_device_event(struct notifier_block *unused, | |
1887 | unsigned long event, void *ptr) | |
1888 | { | |
1889 | struct net_device *dev = ptr; | |
1890 | ||
1891 | if (!net_eq(dev_net(dev), &init_net)) | |
1892 | return NOTIFY_DONE; | |
1893 | ||
1894 | /* It is OK that we do not hold the group lock right now, | |
1895 | * as we run under the RTNL lock. | |
1896 | */ | |
1897 | ||
1898 | switch (event) { | |
1899 | case NETDEV_CHANGENAME: | |
1900 | pktgen_change_name(dev); | |
1901 | break; | |
1902 | ||
1903 | case NETDEV_UNREGISTER: | |
1904 | pktgen_mark_device(dev->name); | |
1905 | break; | |
1906 | } | |
1907 | ||
1908 | return NOTIFY_DONE; | |
1909 | } | |
1910 | ||
1911 | static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, const char *ifname) | |
1912 | { | |
1913 | char b[IFNAMSIZ+5]; | |
1914 | int i = 0; | |
1915 | ||
1916 | for(i=0; ifname[i] != '@'; i++) { | |
1917 | if(i == IFNAMSIZ) | |
1918 | break; | |
1919 | ||
1920 | b[i] = ifname[i]; | |
1921 | } | |
1922 | b[i] = 0; | |
1923 | ||
1924 | return dev_get_by_name(&init_net, b); | |
1925 | } | |
1926 | ||
1927 | ||
1928 | /* Associate pktgen_dev with a device. */ | |
1929 | ||
1930 | static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname) | |
1931 | { | |
1932 | struct net_device *odev; | |
1933 | int err; | |
1934 | ||
1935 | /* Clean old setups */ | |
1936 | if (pkt_dev->odev) { | |
1937 | dev_put(pkt_dev->odev); | |
1938 | pkt_dev->odev = NULL; | |
1939 | } | |
1940 | ||
1941 | odev = pktgen_dev_get_by_name(pkt_dev, ifname); | |
1942 | if (!odev) { | |
1943 | printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname); | |
1944 | return -ENODEV; | |
1945 | } | |
1946 | ||
1947 | if (odev->type != ARPHRD_ETHER) { | |
1948 | printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname); | |
1949 | err = -EINVAL; | |
1950 | } else if (!netif_running(odev)) { | |
1951 | printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname); | |
1952 | err = -ENETDOWN; | |
1953 | } else { | |
1954 | pkt_dev->odev = odev; | |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | dev_put(odev); | |
1959 | return err; | |
1960 | } | |
1961 | ||
1962 | /* Read pkt_dev from the interface and set up internal pktgen_dev | |
1963 | * structure to have the right information to create/send packets | |
1964 | */ | |
1965 | static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) | |
1966 | { | |
1967 | int ntxq; | |
1968 | ||
1969 | if (!pkt_dev->odev) { | |
1970 | printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in " | |
1971 | "setup_inject.\n"); | |
1972 | sprintf(pkt_dev->result, | |
1973 | "ERROR: pkt_dev->odev == NULL in setup_inject.\n"); | |
1974 | return; | |
1975 | } | |
1976 | ||
1977 | /* make sure that we don't pick a non-existing transmit queue */ | |
1978 | ntxq = pkt_dev->odev->real_num_tx_queues; | |
1979 | ||
1980 | if (ntxq <= pkt_dev->queue_map_min) { | |
1981 | printk(KERN_WARNING "pktgen: WARNING: Requested " | |
1982 | "queue_map_min (zero-based) (%d) exceeds valid range " | |
1983 | "[0 - %d] for (%d) queues on %s, resetting\n", | |
1984 | pkt_dev->queue_map_min, (ntxq ?: 1)- 1, ntxq, | |
1985 | pkt_dev->odev->name); | |
1986 | pkt_dev->queue_map_min = ntxq - 1; | |
1987 | } | |
1988 | if (pkt_dev->queue_map_max >= ntxq) { | |
1989 | printk(KERN_WARNING "pktgen: WARNING: Requested " | |
1990 | "queue_map_max (zero-based) (%d) exceeds valid range " | |
1991 | "[0 - %d] for (%d) queues on %s, resetting\n", | |
1992 | pkt_dev->queue_map_max, (ntxq ?: 1)- 1, ntxq, | |
1993 | pkt_dev->odev->name); | |
1994 | pkt_dev->queue_map_max = ntxq - 1; | |
1995 | } | |
1996 | ||
1997 | /* Default to the interface's mac if not explicitly set. */ | |
1998 | ||
1999 | if (is_zero_ether_addr(pkt_dev->src_mac)) | |
2000 | memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); | |
2001 | ||
2002 | /* Set up Dest MAC */ | |
2003 | memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN); | |
2004 | ||
2005 | /* Set up pkt size */ | |
2006 | pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size; | |
2007 | ||
2008 | if (pkt_dev->flags & F_IPV6) { | |
2009 | /* | |
2010 | * Skip this automatic address setting until locks or functions | |
2011 | * gets exported | |
2012 | */ | |
2013 | ||
2014 | #ifdef NOTNOW | |
2015 | int i, set = 0, err = 1; | |
2016 | struct inet6_dev *idev; | |
2017 | ||
2018 | for (i = 0; i < IN6_ADDR_HSIZE; i++) | |
2019 | if (pkt_dev->cur_in6_saddr.s6_addr[i]) { | |
2020 | set = 1; | |
2021 | break; | |
2022 | } | |
2023 | ||
2024 | if (!set) { | |
2025 | ||
2026 | /* | |
2027 | * Use linklevel address if unconfigured. | |
2028 | * | |
2029 | * use ipv6_get_lladdr if/when it's get exported | |
2030 | */ | |
2031 | ||
2032 | rcu_read_lock(); | |
2033 | if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) { | |
2034 | struct inet6_ifaddr *ifp; | |
2035 | ||
2036 | read_lock_bh(&idev->lock); | |
2037 | for (ifp = idev->addr_list; ifp; | |
2038 | ifp = ifp->if_next) { | |
2039 | if (ifp->scope == IFA_LINK | |
2040 | && !(ifp-> | |
2041 | flags & IFA_F_TENTATIVE)) { | |
2042 | ipv6_addr_copy(&pkt_dev-> | |
2043 | cur_in6_saddr, | |
2044 | &ifp->addr); | |
2045 | err = 0; | |
2046 | break; | |
2047 | } | |
2048 | } | |
2049 | read_unlock_bh(&idev->lock); | |
2050 | } | |
2051 | rcu_read_unlock(); | |
2052 | if (err) | |
2053 | printk(KERN_ERR "pktgen: ERROR: IPv6 link " | |
2054 | "address not availble.\n"); | |
2055 | } | |
2056 | #endif | |
2057 | } else { | |
2058 | pkt_dev->saddr_min = 0; | |
2059 | pkt_dev->saddr_max = 0; | |
2060 | if (strlen(pkt_dev->src_min) == 0) { | |
2061 | ||
2062 | struct in_device *in_dev; | |
2063 | ||
2064 | rcu_read_lock(); | |
2065 | in_dev = __in_dev_get_rcu(pkt_dev->odev); | |
2066 | if (in_dev) { | |
2067 | if (in_dev->ifa_list) { | |
2068 | pkt_dev->saddr_min = | |
2069 | in_dev->ifa_list->ifa_address; | |
2070 | pkt_dev->saddr_max = pkt_dev->saddr_min; | |
2071 | } | |
2072 | } | |
2073 | rcu_read_unlock(); | |
2074 | } else { | |
2075 | pkt_dev->saddr_min = in_aton(pkt_dev->src_min); | |
2076 | pkt_dev->saddr_max = in_aton(pkt_dev->src_max); | |
2077 | } | |
2078 | ||
2079 | pkt_dev->daddr_min = in_aton(pkt_dev->dst_min); | |
2080 | pkt_dev->daddr_max = in_aton(pkt_dev->dst_max); | |
2081 | } | |
2082 | /* Initialize current values. */ | |
2083 | pkt_dev->cur_dst_mac_offset = 0; | |
2084 | pkt_dev->cur_src_mac_offset = 0; | |
2085 | pkt_dev->cur_saddr = pkt_dev->saddr_min; | |
2086 | pkt_dev->cur_daddr = pkt_dev->daddr_min; | |
2087 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2088 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
2089 | pkt_dev->nflows = 0; | |
2090 | } | |
2091 | ||
2092 | static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us) | |
2093 | { | |
2094 | __u64 start; | |
2095 | __u64 now; | |
2096 | ||
2097 | start = now = getCurUs(); | |
2098 | while (now < spin_until_us) { | |
2099 | /* TODO: optimize sleeping behavior */ | |
2100 | if (spin_until_us - now > jiffies_to_usecs(1) + 1) | |
2101 | schedule_timeout_interruptible(1); | |
2102 | else if (spin_until_us - now > 100) { | |
2103 | if (!pkt_dev->running) | |
2104 | return; | |
2105 | if (need_resched()) | |
2106 | schedule(); | |
2107 | } | |
2108 | ||
2109 | now = getCurUs(); | |
2110 | } | |
2111 | ||
2112 | pkt_dev->idle_acc += now - start; | |
2113 | } | |
2114 | ||
2115 | static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev) | |
2116 | { | |
2117 | pkt_dev->pkt_overhead = 0; | |
2118 | pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32); | |
2119 | pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev); | |
2120 | pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev); | |
2121 | } | |
2122 | ||
2123 | static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow) | |
2124 | { | |
2125 | return !!(pkt_dev->flows[flow].flags & F_INIT); | |
2126 | } | |
2127 | ||
2128 | static inline int f_pick(struct pktgen_dev *pkt_dev) | |
2129 | { | |
2130 | int flow = pkt_dev->curfl; | |
2131 | ||
2132 | if (pkt_dev->flags & F_FLOW_SEQ) { | |
2133 | if (pkt_dev->flows[flow].count >= pkt_dev->lflow) { | |
2134 | /* reset time */ | |
2135 | pkt_dev->flows[flow].count = 0; | |
2136 | pkt_dev->flows[flow].flags = 0; | |
2137 | pkt_dev->curfl += 1; | |
2138 | if (pkt_dev->curfl >= pkt_dev->cflows) | |
2139 | pkt_dev->curfl = 0; /*reset */ | |
2140 | } | |
2141 | } else { | |
2142 | flow = random32() % pkt_dev->cflows; | |
2143 | pkt_dev->curfl = flow; | |
2144 | ||
2145 | if (pkt_dev->flows[flow].count > pkt_dev->lflow) { | |
2146 | pkt_dev->flows[flow].count = 0; | |
2147 | pkt_dev->flows[flow].flags = 0; | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | return pkt_dev->curfl; | |
2152 | } | |
2153 | ||
2154 | ||
2155 | #ifdef CONFIG_XFRM | |
2156 | /* If there was already an IPSEC SA, we keep it as is, else | |
2157 | * we go look for it ... | |
2158 | */ | |
2159 | static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow) | |
2160 | { | |
2161 | struct xfrm_state *x = pkt_dev->flows[flow].x; | |
2162 | if (!x) { | |
2163 | /*slow path: we dont already have xfrm_state*/ | |
2164 | x = xfrm_stateonly_find(&init_net, | |
2165 | (xfrm_address_t *)&pkt_dev->cur_daddr, | |
2166 | (xfrm_address_t *)&pkt_dev->cur_saddr, | |
2167 | AF_INET, | |
2168 | pkt_dev->ipsmode, | |
2169 | pkt_dev->ipsproto, 0); | |
2170 | if (x) { | |
2171 | pkt_dev->flows[flow].x = x; | |
2172 | set_pkt_overhead(pkt_dev); | |
2173 | pkt_dev->pkt_overhead+=x->props.header_len; | |
2174 | } | |
2175 | ||
2176 | } | |
2177 | } | |
2178 | #endif | |
2179 | static void set_cur_queue_map(struct pktgen_dev *pkt_dev) | |
2180 | { | |
2181 | ||
2182 | if (pkt_dev->flags & F_QUEUE_MAP_CPU) | |
2183 | pkt_dev->cur_queue_map = smp_processor_id(); | |
2184 | ||
2185 | else if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) { | |
2186 | __u16 t; | |
2187 | if (pkt_dev->flags & F_QUEUE_MAP_RND) { | |
2188 | t = random32() % | |
2189 | (pkt_dev->queue_map_max - | |
2190 | pkt_dev->queue_map_min + 1) | |
2191 | + pkt_dev->queue_map_min; | |
2192 | } else { | |
2193 | t = pkt_dev->cur_queue_map + 1; | |
2194 | if (t > pkt_dev->queue_map_max) | |
2195 | t = pkt_dev->queue_map_min; | |
2196 | } | |
2197 | pkt_dev->cur_queue_map = t; | |
2198 | } | |
2199 | pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues; | |
2200 | } | |
2201 | ||
2202 | /* Increment/randomize headers according to flags and current values | |
2203 | * for IP src/dest, UDP src/dst port, MAC-Addr src/dst | |
2204 | */ | |
2205 | static void mod_cur_headers(struct pktgen_dev *pkt_dev) | |
2206 | { | |
2207 | __u32 imn; | |
2208 | __u32 imx; | |
2209 | int flow = 0; | |
2210 | ||
2211 | if (pkt_dev->cflows) | |
2212 | flow = f_pick(pkt_dev); | |
2213 | ||
2214 | /* Deal with source MAC */ | |
2215 | if (pkt_dev->src_mac_count > 1) { | |
2216 | __u32 mc; | |
2217 | __u32 tmp; | |
2218 | ||
2219 | if (pkt_dev->flags & F_MACSRC_RND) | |
2220 | mc = random32() % pkt_dev->src_mac_count; | |
2221 | else { | |
2222 | mc = pkt_dev->cur_src_mac_offset++; | |
2223 | if (pkt_dev->cur_src_mac_offset >= | |
2224 | pkt_dev->src_mac_count) | |
2225 | pkt_dev->cur_src_mac_offset = 0; | |
2226 | } | |
2227 | ||
2228 | tmp = pkt_dev->src_mac[5] + (mc & 0xFF); | |
2229 | pkt_dev->hh[11] = tmp; | |
2230 | tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2231 | pkt_dev->hh[10] = tmp; | |
2232 | tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2233 | pkt_dev->hh[9] = tmp; | |
2234 | tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2235 | pkt_dev->hh[8] = tmp; | |
2236 | tmp = (pkt_dev->src_mac[1] + (tmp >> 8)); | |
2237 | pkt_dev->hh[7] = tmp; | |
2238 | } | |
2239 | ||
2240 | /* Deal with Destination MAC */ | |
2241 | if (pkt_dev->dst_mac_count > 1) { | |
2242 | __u32 mc; | |
2243 | __u32 tmp; | |
2244 | ||
2245 | if (pkt_dev->flags & F_MACDST_RND) | |
2246 | mc = random32() % pkt_dev->dst_mac_count; | |
2247 | ||
2248 | else { | |
2249 | mc = pkt_dev->cur_dst_mac_offset++; | |
2250 | if (pkt_dev->cur_dst_mac_offset >= | |
2251 | pkt_dev->dst_mac_count) { | |
2252 | pkt_dev->cur_dst_mac_offset = 0; | |
2253 | } | |
2254 | } | |
2255 | ||
2256 | tmp = pkt_dev->dst_mac[5] + (mc & 0xFF); | |
2257 | pkt_dev->hh[5] = tmp; | |
2258 | tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8)); | |
2259 | pkt_dev->hh[4] = tmp; | |
2260 | tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8)); | |
2261 | pkt_dev->hh[3] = tmp; | |
2262 | tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8)); | |
2263 | pkt_dev->hh[2] = tmp; | |
2264 | tmp = (pkt_dev->dst_mac[1] + (tmp >> 8)); | |
2265 | pkt_dev->hh[1] = tmp; | |
2266 | } | |
2267 | ||
2268 | if (pkt_dev->flags & F_MPLS_RND) { | |
2269 | unsigned i; | |
2270 | for (i = 0; i < pkt_dev->nr_labels; i++) | |
2271 | if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM) | |
2272 | pkt_dev->labels[i] = MPLS_STACK_BOTTOM | | |
2273 | ((__force __be32)random32() & | |
2274 | htonl(0x000fffff)); | |
2275 | } | |
2276 | ||
2277 | if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) { | |
2278 | pkt_dev->vlan_id = random32() & (4096-1); | |
2279 | } | |
2280 | ||
2281 | if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) { | |
2282 | pkt_dev->svlan_id = random32() & (4096 - 1); | |
2283 | } | |
2284 | ||
2285 | if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) { | |
2286 | if (pkt_dev->flags & F_UDPSRC_RND) | |
2287 | pkt_dev->cur_udp_src = random32() % | |
2288 | (pkt_dev->udp_src_max - pkt_dev->udp_src_min) | |
2289 | + pkt_dev->udp_src_min; | |
2290 | ||
2291 | else { | |
2292 | pkt_dev->cur_udp_src++; | |
2293 | if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max) | |
2294 | pkt_dev->cur_udp_src = pkt_dev->udp_src_min; | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) { | |
2299 | if (pkt_dev->flags & F_UDPDST_RND) { | |
2300 | pkt_dev->cur_udp_dst = random32() % | |
2301 | (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) | |
2302 | + pkt_dev->udp_dst_min; | |
2303 | } else { | |
2304 | pkt_dev->cur_udp_dst++; | |
2305 | if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max) | |
2306 | pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min; | |
2307 | } | |
2308 | } | |
2309 | ||
2310 | if (!(pkt_dev->flags & F_IPV6)) { | |
2311 | ||
2312 | if ((imn = ntohl(pkt_dev->saddr_min)) < (imx = | |
2313 | ntohl(pkt_dev-> | |
2314 | saddr_max))) { | |
2315 | __u32 t; | |
2316 | if (pkt_dev->flags & F_IPSRC_RND) | |
2317 | t = random32() % (imx - imn) + imn; | |
2318 | else { | |
2319 | t = ntohl(pkt_dev->cur_saddr); | |
2320 | t++; | |
2321 | if (t > imx) { | |
2322 | t = imn; | |
2323 | } | |
2324 | } | |
2325 | pkt_dev->cur_saddr = htonl(t); | |
2326 | } | |
2327 | ||
2328 | if (pkt_dev->cflows && f_seen(pkt_dev, flow)) { | |
2329 | pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr; | |
2330 | } else { | |
2331 | imn = ntohl(pkt_dev->daddr_min); | |
2332 | imx = ntohl(pkt_dev->daddr_max); | |
2333 | if (imn < imx) { | |
2334 | __u32 t; | |
2335 | __be32 s; | |
2336 | if (pkt_dev->flags & F_IPDST_RND) { | |
2337 | ||
2338 | t = random32() % (imx - imn) + imn; | |
2339 | s = htonl(t); | |
2340 | ||
2341 | while (ipv4_is_loopback(s) || | |
2342 | ipv4_is_multicast(s) || | |
2343 | ipv4_is_lbcast(s) || | |
2344 | ipv4_is_zeronet(s) || | |
2345 | ipv4_is_local_multicast(s)) { | |
2346 | t = random32() % (imx - imn) + imn; | |
2347 | s = htonl(t); | |
2348 | } | |
2349 | pkt_dev->cur_daddr = s; | |
2350 | } else { | |
2351 | t = ntohl(pkt_dev->cur_daddr); | |
2352 | t++; | |
2353 | if (t > imx) { | |
2354 | t = imn; | |
2355 | } | |
2356 | pkt_dev->cur_daddr = htonl(t); | |
2357 | } | |
2358 | } | |
2359 | if (pkt_dev->cflows) { | |
2360 | pkt_dev->flows[flow].flags |= F_INIT; | |
2361 | pkt_dev->flows[flow].cur_daddr = | |
2362 | pkt_dev->cur_daddr; | |
2363 | #ifdef CONFIG_XFRM | |
2364 | if (pkt_dev->flags & F_IPSEC_ON) | |
2365 | get_ipsec_sa(pkt_dev, flow); | |
2366 | #endif | |
2367 | pkt_dev->nflows++; | |
2368 | } | |
2369 | } | |
2370 | } else { /* IPV6 * */ | |
2371 | ||
2372 | if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 && | |
2373 | pkt_dev->min_in6_daddr.s6_addr32[1] == 0 && | |
2374 | pkt_dev->min_in6_daddr.s6_addr32[2] == 0 && | |
2375 | pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ; | |
2376 | else { | |
2377 | int i; | |
2378 | ||
2379 | /* Only random destinations yet */ | |
2380 | ||
2381 | for (i = 0; i < 4; i++) { | |
2382 | pkt_dev->cur_in6_daddr.s6_addr32[i] = | |
2383 | (((__force __be32)random32() | | |
2384 | pkt_dev->min_in6_daddr.s6_addr32[i]) & | |
2385 | pkt_dev->max_in6_daddr.s6_addr32[i]); | |
2386 | } | |
2387 | } | |
2388 | } | |
2389 | ||
2390 | if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) { | |
2391 | __u32 t; | |
2392 | if (pkt_dev->flags & F_TXSIZE_RND) { | |
2393 | t = random32() % | |
2394 | (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size) | |
2395 | + pkt_dev->min_pkt_size; | |
2396 | } else { | |
2397 | t = pkt_dev->cur_pkt_size + 1; | |
2398 | if (t > pkt_dev->max_pkt_size) | |
2399 | t = pkt_dev->min_pkt_size; | |
2400 | } | |
2401 | pkt_dev->cur_pkt_size = t; | |
2402 | } | |
2403 | ||
2404 | set_cur_queue_map(pkt_dev); | |
2405 | ||
2406 | pkt_dev->flows[flow].count++; | |
2407 | } | |
2408 | ||
2409 | ||
2410 | #ifdef CONFIG_XFRM | |
2411 | static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev) | |
2412 | { | |
2413 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2414 | int err = 0; | |
2415 | struct iphdr *iph; | |
2416 | ||
2417 | if (!x) | |
2418 | return 0; | |
2419 | /* XXX: we dont support tunnel mode for now until | |
2420 | * we resolve the dst issue */ | |
2421 | if (x->props.mode != XFRM_MODE_TRANSPORT) | |
2422 | return 0; | |
2423 | ||
2424 | spin_lock(&x->lock); | |
2425 | iph = ip_hdr(skb); | |
2426 | ||
2427 | err = x->outer_mode->output(x, skb); | |
2428 | if (err) | |
2429 | goto error; | |
2430 | err = x->type->output(x, skb); | |
2431 | if (err) | |
2432 | goto error; | |
2433 | ||
2434 | x->curlft.bytes +=skb->len; | |
2435 | x->curlft.packets++; | |
2436 | error: | |
2437 | spin_unlock(&x->lock); | |
2438 | return err; | |
2439 | } | |
2440 | ||
2441 | static void free_SAs(struct pktgen_dev *pkt_dev) | |
2442 | { | |
2443 | if (pkt_dev->cflows) { | |
2444 | /* let go of the SAs if we have them */ | |
2445 | int i = 0; | |
2446 | for (; i < pkt_dev->cflows; i++) { | |
2447 | struct xfrm_state *x = pkt_dev->flows[i].x; | |
2448 | if (x) { | |
2449 | xfrm_state_put(x); | |
2450 | pkt_dev->flows[i].x = NULL; | |
2451 | } | |
2452 | } | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | static int process_ipsec(struct pktgen_dev *pkt_dev, | |
2457 | struct sk_buff *skb, __be16 protocol) | |
2458 | { | |
2459 | if (pkt_dev->flags & F_IPSEC_ON) { | |
2460 | struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x; | |
2461 | int nhead = 0; | |
2462 | if (x) { | |
2463 | int ret; | |
2464 | __u8 *eth; | |
2465 | nhead = x->props.header_len - skb_headroom(skb); | |
2466 | if (nhead >0) { | |
2467 | ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC); | |
2468 | if (ret < 0) { | |
2469 | printk(KERN_ERR "Error expanding " | |
2470 | "ipsec packet %d\n",ret); | |
2471 | goto err; | |
2472 | } | |
2473 | } | |
2474 | ||
2475 | /* ipsec is not expecting ll header */ | |
2476 | skb_pull(skb, ETH_HLEN); | |
2477 | ret = pktgen_output_ipsec(skb, pkt_dev); | |
2478 | if (ret) { | |
2479 | printk(KERN_ERR "Error creating ipsec " | |
2480 | "packet %d\n",ret); | |
2481 | goto err; | |
2482 | } | |
2483 | /* restore ll */ | |
2484 | eth = (__u8 *) skb_push(skb, ETH_HLEN); | |
2485 | memcpy(eth, pkt_dev->hh, 12); | |
2486 | *(u16 *) & eth[12] = protocol; | |
2487 | } | |
2488 | } | |
2489 | return 1; | |
2490 | err: | |
2491 | kfree_skb(skb); | |
2492 | return 0; | |
2493 | } | |
2494 | #endif | |
2495 | ||
2496 | static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev) | |
2497 | { | |
2498 | unsigned i; | |
2499 | for (i = 0; i < pkt_dev->nr_labels; i++) { | |
2500 | *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM; | |
2501 | } | |
2502 | mpls--; | |
2503 | *mpls |= MPLS_STACK_BOTTOM; | |
2504 | } | |
2505 | ||
2506 | static inline __be16 build_tci(unsigned int id, unsigned int cfi, | |
2507 | unsigned int prio) | |
2508 | { | |
2509 | return htons(id | (cfi << 12) | (prio << 13)); | |
2510 | } | |
2511 | ||
2512 | static struct sk_buff *fill_packet_ipv4(struct net_device *odev, | |
2513 | struct pktgen_dev *pkt_dev) | |
2514 | { | |
2515 | struct sk_buff *skb = NULL; | |
2516 | __u8 *eth; | |
2517 | struct udphdr *udph; | |
2518 | int datalen, iplen; | |
2519 | struct iphdr *iph; | |
2520 | struct pktgen_hdr *pgh = NULL; | |
2521 | __be16 protocol = htons(ETH_P_IP); | |
2522 | __be32 *mpls; | |
2523 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ | |
2524 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2525 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2526 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
2527 | u16 queue_map; | |
2528 | ||
2529 | if (pkt_dev->nr_labels) | |
2530 | protocol = htons(ETH_P_MPLS_UC); | |
2531 | ||
2532 | if (pkt_dev->vlan_id != 0xffff) | |
2533 | protocol = htons(ETH_P_8021Q); | |
2534 | ||
2535 | /* Update any of the values, used when we're incrementing various | |
2536 | * fields. | |
2537 | */ | |
2538 | queue_map = pkt_dev->cur_queue_map; | |
2539 | mod_cur_headers(pkt_dev); | |
2540 | ||
2541 | datalen = (odev->hard_header_len + 16) & ~0xf; | |
2542 | skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen + | |
2543 | pkt_dev->pkt_overhead, GFP_ATOMIC); | |
2544 | if (!skb) { | |
2545 | sprintf(pkt_dev->result, "No memory"); | |
2546 | return NULL; | |
2547 | } | |
2548 | ||
2549 | skb_reserve(skb, datalen); | |
2550 | ||
2551 | /* Reserve for ethernet and IP header */ | |
2552 | eth = (__u8 *) skb_push(skb, 14); | |
2553 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); | |
2554 | if (pkt_dev->nr_labels) | |
2555 | mpls_push(mpls, pkt_dev); | |
2556 | ||
2557 | if (pkt_dev->vlan_id != 0xffff) { | |
2558 | if (pkt_dev->svlan_id != 0xffff) { | |
2559 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2560 | *svlan_tci = build_tci(pkt_dev->svlan_id, | |
2561 | pkt_dev->svlan_cfi, | |
2562 | pkt_dev->svlan_p); | |
2563 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2564 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); | |
2565 | } | |
2566 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2567 | *vlan_tci = build_tci(pkt_dev->vlan_id, | |
2568 | pkt_dev->vlan_cfi, | |
2569 | pkt_dev->vlan_p); | |
2570 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2571 | *vlan_encapsulated_proto = htons(ETH_P_IP); | |
2572 | } | |
2573 | ||
2574 | skb->network_header = skb->tail; | |
2575 | skb->transport_header = skb->network_header + sizeof(struct iphdr); | |
2576 | skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr)); | |
2577 | skb_set_queue_mapping(skb, queue_map); | |
2578 | iph = ip_hdr(skb); | |
2579 | udph = udp_hdr(skb); | |
2580 | ||
2581 | memcpy(eth, pkt_dev->hh, 12); | |
2582 | *(__be16 *) & eth[12] = protocol; | |
2583 | ||
2584 | /* Eth + IPh + UDPh + mpls */ | |
2585 | datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 - | |
2586 | pkt_dev->pkt_overhead; | |
2587 | if (datalen < sizeof(struct pktgen_hdr)) | |
2588 | datalen = sizeof(struct pktgen_hdr); | |
2589 | ||
2590 | udph->source = htons(pkt_dev->cur_udp_src); | |
2591 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
2592 | udph->len = htons(datalen + 8); /* DATA + udphdr */ | |
2593 | udph->check = 0; /* No checksum */ | |
2594 | ||
2595 | iph->ihl = 5; | |
2596 | iph->version = 4; | |
2597 | iph->ttl = 32; | |
2598 | iph->tos = pkt_dev->tos; | |
2599 | iph->protocol = IPPROTO_UDP; /* UDP */ | |
2600 | iph->saddr = pkt_dev->cur_saddr; | |
2601 | iph->daddr = pkt_dev->cur_daddr; | |
2602 | iph->frag_off = 0; | |
2603 | iplen = 20 + 8 + datalen; | |
2604 | iph->tot_len = htons(iplen); | |
2605 | iph->check = 0; | |
2606 | iph->check = ip_fast_csum((void *)iph, iph->ihl); | |
2607 | skb->protocol = protocol; | |
2608 | skb->mac_header = (skb->network_header - ETH_HLEN - | |
2609 | pkt_dev->pkt_overhead); | |
2610 | skb->dev = odev; | |
2611 | skb->pkt_type = PACKET_HOST; | |
2612 | ||
2613 | if (pkt_dev->nfrags <= 0) | |
2614 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); | |
2615 | else { | |
2616 | int frags = pkt_dev->nfrags; | |
2617 | int i; | |
2618 | ||
2619 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); | |
2620 | ||
2621 | if (frags > MAX_SKB_FRAGS) | |
2622 | frags = MAX_SKB_FRAGS; | |
2623 | if (datalen > frags * PAGE_SIZE) { | |
2624 | skb_put(skb, datalen - frags * PAGE_SIZE); | |
2625 | datalen = frags * PAGE_SIZE; | |
2626 | } | |
2627 | ||
2628 | i = 0; | |
2629 | while (datalen > 0) { | |
2630 | struct page *page = alloc_pages(GFP_KERNEL, 0); | |
2631 | skb_shinfo(skb)->frags[i].page = page; | |
2632 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
2633 | skb_shinfo(skb)->frags[i].size = | |
2634 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); | |
2635 | datalen -= skb_shinfo(skb)->frags[i].size; | |
2636 | skb->len += skb_shinfo(skb)->frags[i].size; | |
2637 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
2638 | i++; | |
2639 | skb_shinfo(skb)->nr_frags = i; | |
2640 | } | |
2641 | ||
2642 | while (i < frags) { | |
2643 | int rem; | |
2644 | ||
2645 | if (i == 0) | |
2646 | break; | |
2647 | ||
2648 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
2649 | if (rem == 0) | |
2650 | break; | |
2651 | ||
2652 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
2653 | ||
2654 | skb_shinfo(skb)->frags[i] = | |
2655 | skb_shinfo(skb)->frags[i - 1]; | |
2656 | get_page(skb_shinfo(skb)->frags[i].page); | |
2657 | skb_shinfo(skb)->frags[i].page = | |
2658 | skb_shinfo(skb)->frags[i - 1].page; | |
2659 | skb_shinfo(skb)->frags[i].page_offset += | |
2660 | skb_shinfo(skb)->frags[i - 1].size; | |
2661 | skb_shinfo(skb)->frags[i].size = rem; | |
2662 | i++; | |
2663 | skb_shinfo(skb)->nr_frags = i; | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | /* Stamp the time, and sequence number, convert them to network byte order */ | |
2668 | ||
2669 | if (pgh) { | |
2670 | struct timeval timestamp; | |
2671 | ||
2672 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
2673 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
2674 | ||
2675 | do_gettimeofday(×tamp); | |
2676 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
2677 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
2678 | } | |
2679 | ||
2680 | #ifdef CONFIG_XFRM | |
2681 | if (!process_ipsec(pkt_dev, skb, protocol)) | |
2682 | return NULL; | |
2683 | #endif | |
2684 | ||
2685 | return skb; | |
2686 | } | |
2687 | ||
2688 | /* | |
2689 | * scan_ip6, fmt_ip taken from dietlibc-0.21 | |
2690 | * Author Felix von Leitner <felix-dietlibc@fefe.de> | |
2691 | * | |
2692 | * Slightly modified for kernel. | |
2693 | * Should be candidate for net/ipv4/utils.c | |
2694 | * --ro | |
2695 | */ | |
2696 | ||
2697 | static unsigned int scan_ip6(const char *s, char ip[16]) | |
2698 | { | |
2699 | unsigned int i; | |
2700 | unsigned int len = 0; | |
2701 | unsigned long u; | |
2702 | char suffix[16]; | |
2703 | unsigned int prefixlen = 0; | |
2704 | unsigned int suffixlen = 0; | |
2705 | __be32 tmp; | |
2706 | char *pos; | |
2707 | ||
2708 | for (i = 0; i < 16; i++) | |
2709 | ip[i] = 0; | |
2710 | ||
2711 | for (;;) { | |
2712 | if (*s == ':') { | |
2713 | len++; | |
2714 | if (s[1] == ':') { /* Found "::", skip to part 2 */ | |
2715 | s += 2; | |
2716 | len++; | |
2717 | break; | |
2718 | } | |
2719 | s++; | |
2720 | } | |
2721 | ||
2722 | u = simple_strtoul(s, &pos, 16); | |
2723 | i = pos - s; | |
2724 | if (!i) | |
2725 | return 0; | |
2726 | if (prefixlen == 12 && s[i] == '.') { | |
2727 | ||
2728 | /* the last 4 bytes may be written as IPv4 address */ | |
2729 | ||
2730 | tmp = in_aton(s); | |
2731 | memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp)); | |
2732 | return i + len; | |
2733 | } | |
2734 | ip[prefixlen++] = (u >> 8); | |
2735 | ip[prefixlen++] = (u & 255); | |
2736 | s += i; | |
2737 | len += i; | |
2738 | if (prefixlen == 16) | |
2739 | return len; | |
2740 | } | |
2741 | ||
2742 | /* part 2, after "::" */ | |
2743 | for (;;) { | |
2744 | if (*s == ':') { | |
2745 | if (suffixlen == 0) | |
2746 | break; | |
2747 | s++; | |
2748 | len++; | |
2749 | } else if (suffixlen != 0) | |
2750 | break; | |
2751 | ||
2752 | u = simple_strtol(s, &pos, 16); | |
2753 | i = pos - s; | |
2754 | if (!i) { | |
2755 | if (*s) | |
2756 | len--; | |
2757 | break; | |
2758 | } | |
2759 | if (suffixlen + prefixlen <= 12 && s[i] == '.') { | |
2760 | tmp = in_aton(s); | |
2761 | memcpy((struct in_addr *)(suffix + suffixlen), &tmp, | |
2762 | sizeof(tmp)); | |
2763 | suffixlen += 4; | |
2764 | len += strlen(s); | |
2765 | break; | |
2766 | } | |
2767 | suffix[suffixlen++] = (u >> 8); | |
2768 | suffix[suffixlen++] = (u & 255); | |
2769 | s += i; | |
2770 | len += i; | |
2771 | if (prefixlen + suffixlen == 16) | |
2772 | break; | |
2773 | } | |
2774 | for (i = 0; i < suffixlen; i++) | |
2775 | ip[16 - suffixlen + i] = suffix[i]; | |
2776 | return len; | |
2777 | } | |
2778 | ||
2779 | static char tohex(char hexdigit) | |
2780 | { | |
2781 | return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0'; | |
2782 | } | |
2783 | ||
2784 | static int fmt_xlong(char *s, unsigned int i) | |
2785 | { | |
2786 | char *bak = s; | |
2787 | *s = tohex((i >> 12) & 0xf); | |
2788 | if (s != bak || *s != '0') | |
2789 | ++s; | |
2790 | *s = tohex((i >> 8) & 0xf); | |
2791 | if (s != bak || *s != '0') | |
2792 | ++s; | |
2793 | *s = tohex((i >> 4) & 0xf); | |
2794 | if (s != bak || *s != '0') | |
2795 | ++s; | |
2796 | *s = tohex(i & 0xf); | |
2797 | return s - bak + 1; | |
2798 | } | |
2799 | ||
2800 | static unsigned int fmt_ip6(char *s, const char ip[16]) | |
2801 | { | |
2802 | unsigned int len; | |
2803 | unsigned int i; | |
2804 | unsigned int temp; | |
2805 | unsigned int compressing; | |
2806 | int j; | |
2807 | ||
2808 | len = 0; | |
2809 | compressing = 0; | |
2810 | for (j = 0; j < 16; j += 2) { | |
2811 | ||
2812 | #ifdef V4MAPPEDPREFIX | |
2813 | if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) { | |
2814 | inet_ntoa_r(*(struct in_addr *)(ip + 12), s); | |
2815 | temp = strlen(s); | |
2816 | return len + temp; | |
2817 | } | |
2818 | #endif | |
2819 | temp = ((unsigned long)(unsigned char)ip[j] << 8) + | |
2820 | (unsigned long)(unsigned char)ip[j + 1]; | |
2821 | if (temp == 0) { | |
2822 | if (!compressing) { | |
2823 | compressing = 1; | |
2824 | if (j == 0) { | |
2825 | *s++ = ':'; | |
2826 | ++len; | |
2827 | } | |
2828 | } | |
2829 | } else { | |
2830 | if (compressing) { | |
2831 | compressing = 0; | |
2832 | *s++ = ':'; | |
2833 | ++len; | |
2834 | } | |
2835 | i = fmt_xlong(s, temp); | |
2836 | len += i; | |
2837 | s += i; | |
2838 | if (j < 14) { | |
2839 | *s++ = ':'; | |
2840 | ++len; | |
2841 | } | |
2842 | } | |
2843 | } | |
2844 | if (compressing) { | |
2845 | *s++ = ':'; | |
2846 | ++len; | |
2847 | } | |
2848 | *s = 0; | |
2849 | return len; | |
2850 | } | |
2851 | ||
2852 | static struct sk_buff *fill_packet_ipv6(struct net_device *odev, | |
2853 | struct pktgen_dev *pkt_dev) | |
2854 | { | |
2855 | struct sk_buff *skb = NULL; | |
2856 | __u8 *eth; | |
2857 | struct udphdr *udph; | |
2858 | int datalen; | |
2859 | struct ipv6hdr *iph; | |
2860 | struct pktgen_hdr *pgh = NULL; | |
2861 | __be16 protocol = htons(ETH_P_IPV6); | |
2862 | __be32 *mpls; | |
2863 | __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */ | |
2864 | __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */ | |
2865 | __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */ | |
2866 | __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */ | |
2867 | u16 queue_map; | |
2868 | ||
2869 | if (pkt_dev->nr_labels) | |
2870 | protocol = htons(ETH_P_MPLS_UC); | |
2871 | ||
2872 | if (pkt_dev->vlan_id != 0xffff) | |
2873 | protocol = htons(ETH_P_8021Q); | |
2874 | ||
2875 | /* Update any of the values, used when we're incrementing various | |
2876 | * fields. | |
2877 | */ | |
2878 | queue_map = pkt_dev->cur_queue_map; | |
2879 | mod_cur_headers(pkt_dev); | |
2880 | ||
2881 | skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 + | |
2882 | pkt_dev->pkt_overhead, GFP_ATOMIC); | |
2883 | if (!skb) { | |
2884 | sprintf(pkt_dev->result, "No memory"); | |
2885 | return NULL; | |
2886 | } | |
2887 | ||
2888 | skb_reserve(skb, 16); | |
2889 | ||
2890 | /* Reserve for ethernet and IP header */ | |
2891 | eth = (__u8 *) skb_push(skb, 14); | |
2892 | mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32)); | |
2893 | if (pkt_dev->nr_labels) | |
2894 | mpls_push(mpls, pkt_dev); | |
2895 | ||
2896 | if (pkt_dev->vlan_id != 0xffff) { | |
2897 | if (pkt_dev->svlan_id != 0xffff) { | |
2898 | svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2899 | *svlan_tci = build_tci(pkt_dev->svlan_id, | |
2900 | pkt_dev->svlan_cfi, | |
2901 | pkt_dev->svlan_p); | |
2902 | svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2903 | *svlan_encapsulated_proto = htons(ETH_P_8021Q); | |
2904 | } | |
2905 | vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2906 | *vlan_tci = build_tci(pkt_dev->vlan_id, | |
2907 | pkt_dev->vlan_cfi, | |
2908 | pkt_dev->vlan_p); | |
2909 | vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16)); | |
2910 | *vlan_encapsulated_proto = htons(ETH_P_IPV6); | |
2911 | } | |
2912 | ||
2913 | skb->network_header = skb->tail; | |
2914 | skb->transport_header = skb->network_header + sizeof(struct ipv6hdr); | |
2915 | skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr)); | |
2916 | skb_set_queue_mapping(skb, queue_map); | |
2917 | iph = ipv6_hdr(skb); | |
2918 | udph = udp_hdr(skb); | |
2919 | ||
2920 | memcpy(eth, pkt_dev->hh, 12); | |
2921 | *(__be16 *) & eth[12] = protocol; | |
2922 | ||
2923 | /* Eth + IPh + UDPh + mpls */ | |
2924 | datalen = pkt_dev->cur_pkt_size - 14 - | |
2925 | sizeof(struct ipv6hdr) - sizeof(struct udphdr) - | |
2926 | pkt_dev->pkt_overhead; | |
2927 | ||
2928 | if (datalen < sizeof(struct pktgen_hdr)) { | |
2929 | datalen = sizeof(struct pktgen_hdr); | |
2930 | if (net_ratelimit()) | |
2931 | printk(KERN_INFO "pktgen: increased datalen to %d\n", | |
2932 | datalen); | |
2933 | } | |
2934 | ||
2935 | udph->source = htons(pkt_dev->cur_udp_src); | |
2936 | udph->dest = htons(pkt_dev->cur_udp_dst); | |
2937 | udph->len = htons(datalen + sizeof(struct udphdr)); | |
2938 | udph->check = 0; /* No checksum */ | |
2939 | ||
2940 | *(__be32 *) iph = htonl(0x60000000); /* Version + flow */ | |
2941 | ||
2942 | if (pkt_dev->traffic_class) { | |
2943 | /* Version + traffic class + flow (0) */ | |
2944 | *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20)); | |
2945 | } | |
2946 | ||
2947 | iph->hop_limit = 32; | |
2948 | ||
2949 | iph->payload_len = htons(sizeof(struct udphdr) + datalen); | |
2950 | iph->nexthdr = IPPROTO_UDP; | |
2951 | ||
2952 | ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr); | |
2953 | ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr); | |
2954 | ||
2955 | skb->mac_header = (skb->network_header - ETH_HLEN - | |
2956 | pkt_dev->pkt_overhead); | |
2957 | skb->protocol = protocol; | |
2958 | skb->dev = odev; | |
2959 | skb->pkt_type = PACKET_HOST; | |
2960 | ||
2961 | if (pkt_dev->nfrags <= 0) | |
2962 | pgh = (struct pktgen_hdr *)skb_put(skb, datalen); | |
2963 | else { | |
2964 | int frags = pkt_dev->nfrags; | |
2965 | int i; | |
2966 | ||
2967 | pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8); | |
2968 | ||
2969 | if (frags > MAX_SKB_FRAGS) | |
2970 | frags = MAX_SKB_FRAGS; | |
2971 | if (datalen > frags * PAGE_SIZE) { | |
2972 | skb_put(skb, datalen - frags * PAGE_SIZE); | |
2973 | datalen = frags * PAGE_SIZE; | |
2974 | } | |
2975 | ||
2976 | i = 0; | |
2977 | while (datalen > 0) { | |
2978 | struct page *page = alloc_pages(GFP_KERNEL, 0); | |
2979 | skb_shinfo(skb)->frags[i].page = page; | |
2980 | skb_shinfo(skb)->frags[i].page_offset = 0; | |
2981 | skb_shinfo(skb)->frags[i].size = | |
2982 | (datalen < PAGE_SIZE ? datalen : PAGE_SIZE); | |
2983 | datalen -= skb_shinfo(skb)->frags[i].size; | |
2984 | skb->len += skb_shinfo(skb)->frags[i].size; | |
2985 | skb->data_len += skb_shinfo(skb)->frags[i].size; | |
2986 | i++; | |
2987 | skb_shinfo(skb)->nr_frags = i; | |
2988 | } | |
2989 | ||
2990 | while (i < frags) { | |
2991 | int rem; | |
2992 | ||
2993 | if (i == 0) | |
2994 | break; | |
2995 | ||
2996 | rem = skb_shinfo(skb)->frags[i - 1].size / 2; | |
2997 | if (rem == 0) | |
2998 | break; | |
2999 | ||
3000 | skb_shinfo(skb)->frags[i - 1].size -= rem; | |
3001 | ||
3002 | skb_shinfo(skb)->frags[i] = | |
3003 | skb_shinfo(skb)->frags[i - 1]; | |
3004 | get_page(skb_shinfo(skb)->frags[i].page); | |
3005 | skb_shinfo(skb)->frags[i].page = | |
3006 | skb_shinfo(skb)->frags[i - 1].page; | |
3007 | skb_shinfo(skb)->frags[i].page_offset += | |
3008 | skb_shinfo(skb)->frags[i - 1].size; | |
3009 | skb_shinfo(skb)->frags[i].size = rem; | |
3010 | i++; | |
3011 | skb_shinfo(skb)->nr_frags = i; | |
3012 | } | |
3013 | } | |
3014 | ||
3015 | /* Stamp the time, and sequence number, convert them to network byte order */ | |
3016 | /* should we update cloned packets too ? */ | |
3017 | if (pgh) { | |
3018 | struct timeval timestamp; | |
3019 | ||
3020 | pgh->pgh_magic = htonl(PKTGEN_MAGIC); | |
3021 | pgh->seq_num = htonl(pkt_dev->seq_num); | |
3022 | ||
3023 | do_gettimeofday(×tamp); | |
3024 | pgh->tv_sec = htonl(timestamp.tv_sec); | |
3025 | pgh->tv_usec = htonl(timestamp.tv_usec); | |
3026 | } | |
3027 | /* pkt_dev->seq_num++; FF: you really mean this? */ | |
3028 | ||
3029 | return skb; | |
3030 | } | |
3031 | ||
3032 | static struct sk_buff *fill_packet(struct net_device *odev, | |
3033 | struct pktgen_dev *pkt_dev) | |
3034 | { | |
3035 | if (pkt_dev->flags & F_IPV6) | |
3036 | return fill_packet_ipv6(odev, pkt_dev); | |
3037 | else | |
3038 | return fill_packet_ipv4(odev, pkt_dev); | |
3039 | } | |
3040 | ||
3041 | static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) | |
3042 | { | |
3043 | pkt_dev->seq_num = 1; | |
3044 | pkt_dev->idle_acc = 0; | |
3045 | pkt_dev->sofar = 0; | |
3046 | pkt_dev->tx_bytes = 0; | |
3047 | pkt_dev->errors = 0; | |
3048 | } | |
3049 | ||
3050 | /* Set up structure for sending pkts, clear counters */ | |
3051 | ||
3052 | static void pktgen_run(struct pktgen_thread *t) | |
3053 | { | |
3054 | struct pktgen_dev *pkt_dev; | |
3055 | int started = 0; | |
3056 | ||
3057 | pr_debug("pktgen: entering pktgen_run. %p\n", t); | |
3058 | ||
3059 | if_lock(t); | |
3060 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
3061 | ||
3062 | /* | |
3063 | * setup odev and create initial packet. | |
3064 | */ | |
3065 | pktgen_setup_inject(pkt_dev); | |
3066 | ||
3067 | if (pkt_dev->odev) { | |
3068 | pktgen_clear_counters(pkt_dev); | |
3069 | pkt_dev->running = 1; /* Cranke yeself! */ | |
3070 | pkt_dev->skb = NULL; | |
3071 | pkt_dev->started_at = getCurUs(); | |
3072 | pkt_dev->next_tx_us = getCurUs(); /* Transmit immediately */ | |
3073 | pkt_dev->next_tx_ns = 0; | |
3074 | set_pkt_overhead(pkt_dev); | |
3075 | ||
3076 | strcpy(pkt_dev->result, "Starting"); | |
3077 | started++; | |
3078 | } else | |
3079 | strcpy(pkt_dev->result, "Error starting"); | |
3080 | } | |
3081 | if_unlock(t); | |
3082 | if (started) | |
3083 | t->control &= ~(T_STOP); | |
3084 | } | |
3085 | ||
3086 | static void pktgen_stop_all_threads_ifs(void) | |
3087 | { | |
3088 | struct pktgen_thread *t; | |
3089 | ||
3090 | pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n"); | |
3091 | ||
3092 | mutex_lock(&pktgen_thread_lock); | |
3093 | ||
3094 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3095 | t->control |= T_STOP; | |
3096 | ||
3097 | mutex_unlock(&pktgen_thread_lock); | |
3098 | } | |
3099 | ||
3100 | static int thread_is_running(const struct pktgen_thread *t) | |
3101 | { | |
3102 | const struct pktgen_dev *pkt_dev; | |
3103 | ||
3104 | list_for_each_entry(pkt_dev, &t->if_list, list) | |
3105 | if (pkt_dev->running) | |
3106 | return 1; | |
3107 | return 0; | |
3108 | } | |
3109 | ||
3110 | static int pktgen_wait_thread_run(struct pktgen_thread *t) | |
3111 | { | |
3112 | if_lock(t); | |
3113 | ||
3114 | while (thread_is_running(t)) { | |
3115 | ||
3116 | if_unlock(t); | |
3117 | ||
3118 | msleep_interruptible(100); | |
3119 | ||
3120 | if (signal_pending(current)) | |
3121 | goto signal; | |
3122 | if_lock(t); | |
3123 | } | |
3124 | if_unlock(t); | |
3125 | return 1; | |
3126 | signal: | |
3127 | return 0; | |
3128 | } | |
3129 | ||
3130 | static int pktgen_wait_all_threads_run(void) | |
3131 | { | |
3132 | struct pktgen_thread *t; | |
3133 | int sig = 1; | |
3134 | ||
3135 | mutex_lock(&pktgen_thread_lock); | |
3136 | ||
3137 | list_for_each_entry(t, &pktgen_threads, th_list) { | |
3138 | sig = pktgen_wait_thread_run(t); | |
3139 | if (sig == 0) | |
3140 | break; | |
3141 | } | |
3142 | ||
3143 | if (sig == 0) | |
3144 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3145 | t->control |= (T_STOP); | |
3146 | ||
3147 | mutex_unlock(&pktgen_thread_lock); | |
3148 | return sig; | |
3149 | } | |
3150 | ||
3151 | static void pktgen_run_all_threads(void) | |
3152 | { | |
3153 | struct pktgen_thread *t; | |
3154 | ||
3155 | pr_debug("pktgen: entering pktgen_run_all_threads.\n"); | |
3156 | ||
3157 | mutex_lock(&pktgen_thread_lock); | |
3158 | ||
3159 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3160 | t->control |= (T_RUN); | |
3161 | ||
3162 | mutex_unlock(&pktgen_thread_lock); | |
3163 | ||
3164 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ | |
3165 | ||
3166 | pktgen_wait_all_threads_run(); | |
3167 | } | |
3168 | ||
3169 | static void pktgen_reset_all_threads(void) | |
3170 | { | |
3171 | struct pktgen_thread *t; | |
3172 | ||
3173 | pr_debug("pktgen: entering pktgen_reset_all_threads.\n"); | |
3174 | ||
3175 | mutex_lock(&pktgen_thread_lock); | |
3176 | ||
3177 | list_for_each_entry(t, &pktgen_threads, th_list) | |
3178 | t->control |= (T_REMDEVALL); | |
3179 | ||
3180 | mutex_unlock(&pktgen_thread_lock); | |
3181 | ||
3182 | schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ | |
3183 | ||
3184 | pktgen_wait_all_threads_run(); | |
3185 | } | |
3186 | ||
3187 | static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) | |
3188 | { | |
3189 | __u64 total_us, bps, mbps, pps, idle; | |
3190 | char *p = pkt_dev->result; | |
3191 | ||
3192 | total_us = pkt_dev->stopped_at - pkt_dev->started_at; | |
3193 | ||
3194 | idle = pkt_dev->idle_acc; | |
3195 | ||
3196 | p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n", | |
3197 | (unsigned long long)total_us, | |
3198 | (unsigned long long)(total_us - idle), | |
3199 | (unsigned long long)idle, | |
3200 | (unsigned long long)pkt_dev->sofar, | |
3201 | pkt_dev->cur_pkt_size, nr_frags); | |
3202 | ||
3203 | pps = pkt_dev->sofar * USEC_PER_SEC; | |
3204 | ||
3205 | while ((total_us >> 32) != 0) { | |
3206 | pps >>= 1; | |
3207 | total_us >>= 1; | |
3208 | } | |
3209 | ||
3210 | do_div(pps, total_us); | |
3211 | ||
3212 | bps = pps * 8 * pkt_dev->cur_pkt_size; | |
3213 | ||
3214 | mbps = bps; | |
3215 | do_div(mbps, 1000000); | |
3216 | p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu", | |
3217 | (unsigned long long)pps, | |
3218 | (unsigned long long)mbps, | |
3219 | (unsigned long long)bps, | |
3220 | (unsigned long long)pkt_dev->errors); | |
3221 | } | |
3222 | ||
3223 | /* Set stopped-at timer, remove from running list, do counters & statistics */ | |
3224 | static int pktgen_stop_device(struct pktgen_dev *pkt_dev) | |
3225 | { | |
3226 | int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; | |
3227 | ||
3228 | if (!pkt_dev->running) { | |
3229 | printk(KERN_WARNING "pktgen: interface: %s is already " | |
3230 | "stopped\n", pkt_dev->odev->name); | |
3231 | return -EINVAL; | |
3232 | } | |
3233 | ||
3234 | kfree_skb(pkt_dev->skb); | |
3235 | pkt_dev->skb = NULL; | |
3236 | pkt_dev->stopped_at = getCurUs(); | |
3237 | pkt_dev->running = 0; | |
3238 | ||
3239 | show_results(pkt_dev, nr_frags); | |
3240 | ||
3241 | return 0; | |
3242 | } | |
3243 | ||
3244 | static struct pktgen_dev *next_to_run(struct pktgen_thread *t) | |
3245 | { | |
3246 | struct pktgen_dev *pkt_dev, *best = NULL; | |
3247 | ||
3248 | if_lock(t); | |
3249 | ||
3250 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
3251 | if (!pkt_dev->running) | |
3252 | continue; | |
3253 | if (best == NULL) | |
3254 | best = pkt_dev; | |
3255 | else if (pkt_dev->next_tx_us < best->next_tx_us) | |
3256 | best = pkt_dev; | |
3257 | } | |
3258 | if_unlock(t); | |
3259 | return best; | |
3260 | } | |
3261 | ||
3262 | static void pktgen_stop(struct pktgen_thread *t) | |
3263 | { | |
3264 | struct pktgen_dev *pkt_dev; | |
3265 | ||
3266 | pr_debug("pktgen: entering pktgen_stop\n"); | |
3267 | ||
3268 | if_lock(t); | |
3269 | ||
3270 | list_for_each_entry(pkt_dev, &t->if_list, list) { | |
3271 | pktgen_stop_device(pkt_dev); | |
3272 | } | |
3273 | ||
3274 | if_unlock(t); | |
3275 | } | |
3276 | ||
3277 | /* | |
3278 | * one of our devices needs to be removed - find it | |
3279 | * and remove it | |
3280 | */ | |
3281 | static void pktgen_rem_one_if(struct pktgen_thread *t) | |
3282 | { | |
3283 | struct list_head *q, *n; | |
3284 | struct pktgen_dev *cur; | |
3285 | ||
3286 | pr_debug("pktgen: entering pktgen_rem_one_if\n"); | |
3287 | ||
3288 | if_lock(t); | |
3289 | ||
3290 | list_for_each_safe(q, n, &t->if_list) { | |
3291 | cur = list_entry(q, struct pktgen_dev, list); | |
3292 | ||
3293 | if (!cur->removal_mark) | |
3294 | continue; | |
3295 | ||
3296 | kfree_skb(cur->skb); | |
3297 | cur->skb = NULL; | |
3298 | ||
3299 | pktgen_remove_device(t, cur); | |
3300 | ||
3301 | break; | |
3302 | } | |
3303 | ||
3304 | if_unlock(t); | |
3305 | } | |
3306 | ||
3307 | static void pktgen_rem_all_ifs(struct pktgen_thread *t) | |
3308 | { | |
3309 | struct list_head *q, *n; | |
3310 | struct pktgen_dev *cur; | |
3311 | ||
3312 | /* Remove all devices, free mem */ | |
3313 | ||
3314 | pr_debug("pktgen: entering pktgen_rem_all_ifs\n"); | |
3315 | if_lock(t); | |
3316 | ||
3317 | list_for_each_safe(q, n, &t->if_list) { | |
3318 | cur = list_entry(q, struct pktgen_dev, list); | |
3319 | ||
3320 | kfree_skb(cur->skb); | |
3321 | cur->skb = NULL; | |
3322 | ||
3323 | pktgen_remove_device(t, cur); | |
3324 | } | |
3325 | ||
3326 | if_unlock(t); | |
3327 | } | |
3328 | ||
3329 | static void pktgen_rem_thread(struct pktgen_thread *t) | |
3330 | { | |
3331 | /* Remove from the thread list */ | |
3332 | ||
3333 | remove_proc_entry(t->tsk->comm, pg_proc_dir); | |
3334 | ||
3335 | mutex_lock(&pktgen_thread_lock); | |
3336 | ||
3337 | list_del(&t->th_list); | |
3338 | ||
3339 | mutex_unlock(&pktgen_thread_lock); | |
3340 | } | |
3341 | ||
3342 | static void pktgen_xmit(struct pktgen_dev *pkt_dev) | |
3343 | { | |
3344 | struct net_device *odev = pkt_dev->odev; | |
3345 | int (*xmit)(struct sk_buff *, struct net_device *) | |
3346 | = odev->netdev_ops->ndo_start_xmit; | |
3347 | struct netdev_queue *txq; | |
3348 | u16 queue_map; | |
3349 | int ret; | |
3350 | ||
3351 | if (pkt_dev->delay_us || pkt_dev->delay_ns) { | |
3352 | u64 now; | |
3353 | ||
3354 | now = getCurUs(); | |
3355 | if (now < pkt_dev->next_tx_us) | |
3356 | spin(pkt_dev, pkt_dev->next_tx_us); | |
3357 | ||
3358 | /* This is max DELAY, this has special meaning of | |
3359 | * "never transmit" | |
3360 | */ | |
3361 | if (pkt_dev->delay_us == 0x7FFFFFFF) { | |
3362 | pkt_dev->next_tx_us = getCurUs() + pkt_dev->delay_us; | |
3363 | pkt_dev->next_tx_ns = pkt_dev->delay_ns; | |
3364 | goto out; | |
3365 | } | |
3366 | } | |
3367 | ||
3368 | if (!pkt_dev->skb) { | |
3369 | set_cur_queue_map(pkt_dev); | |
3370 | queue_map = pkt_dev->cur_queue_map; | |
3371 | } else { | |
3372 | queue_map = skb_get_queue_mapping(pkt_dev->skb); | |
3373 | } | |
3374 | ||
3375 | txq = netdev_get_tx_queue(odev, queue_map); | |
3376 | if (netif_tx_queue_stopped(txq) || | |
3377 | netif_tx_queue_frozen(txq) || | |
3378 | need_resched()) { | |
3379 | u64 idle_start = getCurUs(); | |
3380 | ||
3381 | if (!netif_running(odev)) { | |
3382 | pktgen_stop_device(pkt_dev); | |
3383 | goto out; | |
3384 | } | |
3385 | if (need_resched()) | |
3386 | schedule(); | |
3387 | ||
3388 | pkt_dev->idle_acc += getCurUs() - idle_start; | |
3389 | ||
3390 | if (netif_tx_queue_stopped(txq) || | |
3391 | netif_tx_queue_frozen(txq)) { | |
3392 | pkt_dev->next_tx_us = getCurUs(); /* TODO */ | |
3393 | pkt_dev->next_tx_ns = 0; | |
3394 | goto out; /* Try the next interface */ | |
3395 | } | |
3396 | } | |
3397 | ||
3398 | if (pkt_dev->last_ok || !pkt_dev->skb) { | |
3399 | if ((++pkt_dev->clone_count >= pkt_dev->clone_skb) | |
3400 | || (!pkt_dev->skb)) { | |
3401 | /* build a new pkt */ | |
3402 | kfree_skb(pkt_dev->skb); | |
3403 | ||
3404 | pkt_dev->skb = fill_packet(odev, pkt_dev); | |
3405 | if (pkt_dev->skb == NULL) { | |
3406 | printk(KERN_ERR "pktgen: ERROR: couldn't " | |
3407 | "allocate skb in fill_packet.\n"); | |
3408 | schedule(); | |
3409 | pkt_dev->clone_count--; /* back out increment, OOM */ | |
3410 | goto out; | |
3411 | } | |
3412 | pkt_dev->allocated_skbs++; | |
3413 | pkt_dev->clone_count = 0; /* reset counter */ | |
3414 | } | |
3415 | } | |
3416 | ||
3417 | /* fill_packet() might have changed the queue */ | |
3418 | queue_map = skb_get_queue_mapping(pkt_dev->skb); | |
3419 | txq = netdev_get_tx_queue(odev, queue_map); | |
3420 | ||
3421 | __netif_tx_lock_bh(txq); | |
3422 | if (!netif_tx_queue_stopped(txq) && | |
3423 | !netif_tx_queue_frozen(txq)) { | |
3424 | ||
3425 | atomic_inc(&(pkt_dev->skb->users)); | |
3426 | retry_now: | |
3427 | ret = (*xmit)(pkt_dev->skb, odev); | |
3428 | if (likely(ret == NETDEV_TX_OK)) { | |
3429 | txq_trans_update(txq); | |
3430 | pkt_dev->last_ok = 1; | |
3431 | pkt_dev->sofar++; | |
3432 | pkt_dev->seq_num++; | |
3433 | pkt_dev->tx_bytes += pkt_dev->cur_pkt_size; | |
3434 | ||
3435 | } else if (ret == NETDEV_TX_LOCKED | |
3436 | && (odev->features & NETIF_F_LLTX)) { | |
3437 | cpu_relax(); | |
3438 | goto retry_now; | |
3439 | } else { /* Retry it next time */ | |
3440 | ||
3441 | atomic_dec(&(pkt_dev->skb->users)); | |
3442 | ||
3443 | if (debug && net_ratelimit()) | |
3444 | printk(KERN_INFO "pktgen: Hard xmit error\n"); | |
3445 | ||
3446 | pkt_dev->errors++; | |
3447 | pkt_dev->last_ok = 0; | |
3448 | } | |
3449 | ||
3450 | pkt_dev->next_tx_us = getCurUs(); | |
3451 | pkt_dev->next_tx_ns = 0; | |
3452 | ||
3453 | pkt_dev->next_tx_us += pkt_dev->delay_us; | |
3454 | pkt_dev->next_tx_ns += pkt_dev->delay_ns; | |
3455 | ||
3456 | if (pkt_dev->next_tx_ns > 1000) { | |
3457 | pkt_dev->next_tx_us++; | |
3458 | pkt_dev->next_tx_ns -= 1000; | |
3459 | } | |
3460 | } | |
3461 | ||
3462 | else { /* Retry it next time */ | |
3463 | pkt_dev->last_ok = 0; | |
3464 | pkt_dev->next_tx_us = getCurUs(); /* TODO */ | |
3465 | pkt_dev->next_tx_ns = 0; | |
3466 | } | |
3467 | ||
3468 | __netif_tx_unlock_bh(txq); | |
3469 | ||
3470 | /* If pkt_dev->count is zero, then run forever */ | |
3471 | if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) { | |
3472 | if (atomic_read(&(pkt_dev->skb->users)) != 1) { | |
3473 | u64 idle_start = getCurUs(); | |
3474 | while (atomic_read(&(pkt_dev->skb->users)) != 1) { | |
3475 | if (signal_pending(current)) { | |
3476 | break; | |
3477 | } | |
3478 | schedule(); | |
3479 | } | |
3480 | pkt_dev->idle_acc += getCurUs() - idle_start; | |
3481 | } | |
3482 | ||
3483 | /* Done with this */ | |
3484 | pktgen_stop_device(pkt_dev); | |
3485 | } | |
3486 | out:; | |
3487 | } | |
3488 | ||
3489 | /* | |
3490 | * Main loop of the thread goes here | |
3491 | */ | |
3492 | ||
3493 | static int pktgen_thread_worker(void *arg) | |
3494 | { | |
3495 | DEFINE_WAIT(wait); | |
3496 | struct pktgen_thread *t = arg; | |
3497 | struct pktgen_dev *pkt_dev = NULL; | |
3498 | int cpu = t->cpu; | |
3499 | ||
3500 | BUG_ON(smp_processor_id() != cpu); | |
3501 | ||
3502 | init_waitqueue_head(&t->queue); | |
3503 | complete(&t->start_done); | |
3504 | ||
3505 | pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current)); | |
3506 | ||
3507 | set_current_state(TASK_INTERRUPTIBLE); | |
3508 | ||
3509 | set_freezable(); | |
3510 | ||
3511 | while (!kthread_should_stop()) { | |
3512 | pkt_dev = next_to_run(t); | |
3513 | ||
3514 | if (!pkt_dev && | |
3515 | (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV)) | |
3516 | == 0) { | |
3517 | prepare_to_wait(&(t->queue), &wait, | |
3518 | TASK_INTERRUPTIBLE); | |
3519 | schedule_timeout(HZ / 10); | |
3520 | finish_wait(&(t->queue), &wait); | |
3521 | } | |
3522 | ||
3523 | __set_current_state(TASK_RUNNING); | |
3524 | ||
3525 | if (pkt_dev) | |
3526 | pktgen_xmit(pkt_dev); | |
3527 | ||
3528 | if (t->control & T_STOP) { | |
3529 | pktgen_stop(t); | |
3530 | t->control &= ~(T_STOP); | |
3531 | } | |
3532 | ||
3533 | if (t->control & T_RUN) { | |
3534 | pktgen_run(t); | |
3535 | t->control &= ~(T_RUN); | |
3536 | } | |
3537 | ||
3538 | if (t->control & T_REMDEVALL) { | |
3539 | pktgen_rem_all_ifs(t); | |
3540 | t->control &= ~(T_REMDEVALL); | |
3541 | } | |
3542 | ||
3543 | if (t->control & T_REMDEV) { | |
3544 | pktgen_rem_one_if(t); | |
3545 | t->control &= ~(T_REMDEV); | |
3546 | } | |
3547 | ||
3548 | try_to_freeze(); | |
3549 | ||
3550 | set_current_state(TASK_INTERRUPTIBLE); | |
3551 | } | |
3552 | ||
3553 | pr_debug("pktgen: %s stopping all device\n", t->tsk->comm); | |
3554 | pktgen_stop(t); | |
3555 | ||
3556 | pr_debug("pktgen: %s removing all device\n", t->tsk->comm); | |
3557 | pktgen_rem_all_ifs(t); | |
3558 | ||
3559 | pr_debug("pktgen: %s removing thread.\n", t->tsk->comm); | |
3560 | pktgen_rem_thread(t); | |
3561 | ||
3562 | return 0; | |
3563 | } | |
3564 | ||
3565 | static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, | |
3566 | const char *ifname) | |
3567 | { | |
3568 | struct pktgen_dev *p, *pkt_dev = NULL; | |
3569 | if_lock(t); | |
3570 | ||
3571 | list_for_each_entry(p, &t->if_list, list) | |
3572 | if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) { | |
3573 | pkt_dev = p; | |
3574 | break; | |
3575 | } | |
3576 | ||
3577 | if_unlock(t); | |
3578 | pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev); | |
3579 | return pkt_dev; | |
3580 | } | |
3581 | ||
3582 | /* | |
3583 | * Adds a dev at front of if_list. | |
3584 | */ | |
3585 | ||
3586 | static int add_dev_to_thread(struct pktgen_thread *t, | |
3587 | struct pktgen_dev *pkt_dev) | |
3588 | { | |
3589 | int rv = 0; | |
3590 | ||
3591 | if_lock(t); | |
3592 | ||
3593 | if (pkt_dev->pg_thread) { | |
3594 | printk(KERN_ERR "pktgen: ERROR: already assigned " | |
3595 | "to a thread.\n"); | |
3596 | rv = -EBUSY; | |
3597 | goto out; | |
3598 | } | |
3599 | ||
3600 | list_add(&pkt_dev->list, &t->if_list); | |
3601 | pkt_dev->pg_thread = t; | |
3602 | pkt_dev->running = 0; | |
3603 | ||
3604 | out: | |
3605 | if_unlock(t); | |
3606 | return rv; | |
3607 | } | |
3608 | ||
3609 | /* Called under thread lock */ | |
3610 | ||
3611 | static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) | |
3612 | { | |
3613 | struct pktgen_dev *pkt_dev; | |
3614 | int err; | |
3615 | ||
3616 | /* We don't allow a device to be on several threads */ | |
3617 | ||
3618 | pkt_dev = __pktgen_NN_threads(ifname, FIND); | |
3619 | if (pkt_dev) { | |
3620 | printk(KERN_ERR "pktgen: ERROR: interface already used.\n"); | |
3621 | return -EBUSY; | |
3622 | } | |
3623 | ||
3624 | pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL); | |
3625 | if (!pkt_dev) | |
3626 | return -ENOMEM; | |
3627 | ||
3628 | pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state)); | |
3629 | if (pkt_dev->flows == NULL) { | |
3630 | kfree(pkt_dev); | |
3631 | return -ENOMEM; | |
3632 | } | |
3633 | memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state)); | |
3634 | ||
3635 | pkt_dev->removal_mark = 0; | |
3636 | pkt_dev->min_pkt_size = ETH_ZLEN; | |
3637 | pkt_dev->max_pkt_size = ETH_ZLEN; | |
3638 | pkt_dev->nfrags = 0; | |
3639 | pkt_dev->clone_skb = pg_clone_skb_d; | |
3640 | pkt_dev->delay_us = pg_delay_d / 1000; | |
3641 | pkt_dev->delay_ns = pg_delay_d % 1000; | |
3642 | pkt_dev->count = pg_count_d; | |
3643 | pkt_dev->sofar = 0; | |
3644 | pkt_dev->udp_src_min = 9; /* sink port */ | |
3645 | pkt_dev->udp_src_max = 9; | |
3646 | pkt_dev->udp_dst_min = 9; | |
3647 | pkt_dev->udp_dst_max = 9; | |
3648 | ||
3649 | pkt_dev->vlan_p = 0; | |
3650 | pkt_dev->vlan_cfi = 0; | |
3651 | pkt_dev->vlan_id = 0xffff; | |
3652 | pkt_dev->svlan_p = 0; | |
3653 | pkt_dev->svlan_cfi = 0; | |
3654 | pkt_dev->svlan_id = 0xffff; | |
3655 | ||
3656 | err = pktgen_setup_dev(pkt_dev, ifname); | |
3657 | if (err) | |
3658 | goto out1; | |
3659 | ||
3660 | pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir, | |
3661 | &pktgen_if_fops, pkt_dev); | |
3662 | if (!pkt_dev->entry) { | |
3663 | printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n", | |
3664 | PG_PROC_DIR, ifname); | |
3665 | err = -EINVAL; | |
3666 | goto out2; | |
3667 | } | |
3668 | #ifdef CONFIG_XFRM | |
3669 | pkt_dev->ipsmode = XFRM_MODE_TRANSPORT; | |
3670 | pkt_dev->ipsproto = IPPROTO_ESP; | |
3671 | #endif | |
3672 | ||
3673 | return add_dev_to_thread(t, pkt_dev); | |
3674 | out2: | |
3675 | dev_put(pkt_dev->odev); | |
3676 | out1: | |
3677 | #ifdef CONFIG_XFRM | |
3678 | free_SAs(pkt_dev); | |
3679 | #endif | |
3680 | vfree(pkt_dev->flows); | |
3681 | kfree(pkt_dev); | |
3682 | return err; | |
3683 | } | |
3684 | ||
3685 | static int __init pktgen_create_thread(int cpu) | |
3686 | { | |
3687 | struct pktgen_thread *t; | |
3688 | struct proc_dir_entry *pe; | |
3689 | struct task_struct *p; | |
3690 | ||
3691 | t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL); | |
3692 | if (!t) { | |
3693 | printk(KERN_ERR "pktgen: ERROR: out of memory, can't " | |
3694 | "create new thread.\n"); | |
3695 | return -ENOMEM; | |
3696 | } | |
3697 | ||
3698 | spin_lock_init(&t->if_lock); | |
3699 | t->cpu = cpu; | |
3700 | ||
3701 | INIT_LIST_HEAD(&t->if_list); | |
3702 | ||
3703 | list_add_tail(&t->th_list, &pktgen_threads); | |
3704 | init_completion(&t->start_done); | |
3705 | ||
3706 | p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu); | |
3707 | if (IS_ERR(p)) { | |
3708 | printk(KERN_ERR "pktgen: kernel_thread() failed " | |
3709 | "for cpu %d\n", t->cpu); | |
3710 | list_del(&t->th_list); | |
3711 | kfree(t); | |
3712 | return PTR_ERR(p); | |
3713 | } | |
3714 | kthread_bind(p, cpu); | |
3715 | t->tsk = p; | |
3716 | ||
3717 | pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir, | |
3718 | &pktgen_thread_fops, t); | |
3719 | if (!pe) { | |
3720 | printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n", | |
3721 | PG_PROC_DIR, t->tsk->comm); | |
3722 | kthread_stop(p); | |
3723 | list_del(&t->th_list); | |
3724 | kfree(t); | |
3725 | return -EINVAL; | |
3726 | } | |
3727 | ||
3728 | wake_up_process(p); | |
3729 | wait_for_completion(&t->start_done); | |
3730 | ||
3731 | return 0; | |
3732 | } | |
3733 | ||
3734 | /* | |
3735 | * Removes a device from the thread if_list. | |
3736 | */ | |
3737 | static void _rem_dev_from_if_list(struct pktgen_thread *t, | |
3738 | struct pktgen_dev *pkt_dev) | |
3739 | { | |
3740 | struct list_head *q, *n; | |
3741 | struct pktgen_dev *p; | |
3742 | ||
3743 | list_for_each_safe(q, n, &t->if_list) { | |
3744 | p = list_entry(q, struct pktgen_dev, list); | |
3745 | if (p == pkt_dev) | |
3746 | list_del(&p->list); | |
3747 | } | |
3748 | } | |
3749 | ||
3750 | static int pktgen_remove_device(struct pktgen_thread *t, | |
3751 | struct pktgen_dev *pkt_dev) | |
3752 | { | |
3753 | ||
3754 | pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev); | |
3755 | ||
3756 | if (pkt_dev->running) { | |
3757 | printk(KERN_WARNING "pktgen: WARNING: trying to remove a " | |
3758 | "running interface, stopping it now.\n"); | |
3759 | pktgen_stop_device(pkt_dev); | |
3760 | } | |
3761 | ||
3762 | /* Dis-associate from the interface */ | |
3763 | ||
3764 | if (pkt_dev->odev) { | |
3765 | dev_put(pkt_dev->odev); | |
3766 | pkt_dev->odev = NULL; | |
3767 | } | |
3768 | ||
3769 | /* And update the thread if_list */ | |
3770 | ||
3771 | _rem_dev_from_if_list(t, pkt_dev); | |
3772 | ||
3773 | if (pkt_dev->entry) | |
3774 | remove_proc_entry(pkt_dev->entry->name, pg_proc_dir); | |
3775 | ||
3776 | #ifdef CONFIG_XFRM | |
3777 | free_SAs(pkt_dev); | |
3778 | #endif | |
3779 | vfree(pkt_dev->flows); | |
3780 | kfree(pkt_dev); | |
3781 | return 0; | |
3782 | } | |
3783 | ||
3784 | static int __init pg_init(void) | |
3785 | { | |
3786 | int cpu; | |
3787 | struct proc_dir_entry *pe; | |
3788 | ||
3789 | printk(KERN_INFO "%s", version); | |
3790 | ||
3791 | pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net); | |
3792 | if (!pg_proc_dir) | |
3793 | return -ENODEV; | |
3794 | ||
3795 | pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops); | |
3796 | if (pe == NULL) { | |
3797 | printk(KERN_ERR "pktgen: ERROR: cannot create %s " | |
3798 | "procfs entry.\n", PGCTRL); | |
3799 | proc_net_remove(&init_net, PG_PROC_DIR); | |
3800 | return -EINVAL; | |
3801 | } | |
3802 | ||
3803 | /* Register us to receive netdevice events */ | |
3804 | register_netdevice_notifier(&pktgen_notifier_block); | |
3805 | ||
3806 | for_each_online_cpu(cpu) { | |
3807 | int err; | |
3808 | ||
3809 | err = pktgen_create_thread(cpu); | |
3810 | if (err) | |
3811 | printk(KERN_WARNING "pktgen: WARNING: Cannot create " | |
3812 | "thread for cpu %d (%d)\n", cpu, err); | |
3813 | } | |
3814 | ||
3815 | if (list_empty(&pktgen_threads)) { | |
3816 | printk(KERN_ERR "pktgen: ERROR: Initialization failed for " | |
3817 | "all threads\n"); | |
3818 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3819 | remove_proc_entry(PGCTRL, pg_proc_dir); | |
3820 | proc_net_remove(&init_net, PG_PROC_DIR); | |
3821 | return -ENODEV; | |
3822 | } | |
3823 | ||
3824 | return 0; | |
3825 | } | |
3826 | ||
3827 | static void __exit pg_cleanup(void) | |
3828 | { | |
3829 | struct pktgen_thread *t; | |
3830 | struct list_head *q, *n; | |
3831 | wait_queue_head_t queue; | |
3832 | init_waitqueue_head(&queue); | |
3833 | ||
3834 | /* Stop all interfaces & threads */ | |
3835 | ||
3836 | list_for_each_safe(q, n, &pktgen_threads) { | |
3837 | t = list_entry(q, struct pktgen_thread, th_list); | |
3838 | kthread_stop(t->tsk); | |
3839 | kfree(t); | |
3840 | } | |
3841 | ||
3842 | /* Un-register us from receiving netdevice events */ | |
3843 | unregister_netdevice_notifier(&pktgen_notifier_block); | |
3844 | ||
3845 | /* Clean up proc file system */ | |
3846 | remove_proc_entry(PGCTRL, pg_proc_dir); | |
3847 | proc_net_remove(&init_net, PG_PROC_DIR); | |
3848 | } | |
3849 | ||
3850 | module_init(pg_init); | |
3851 | module_exit(pg_cleanup); | |
3852 | ||
3853 | MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se"); | |
3854 | MODULE_DESCRIPTION("Packet Generator tool"); | |
3855 | MODULE_LICENSE("GPL"); | |
3856 | module_param(pg_count_d, int, 0); | |
3857 | module_param(pg_delay_d, int, 0); | |
3858 | module_param(pg_clone_skb_d, int, 0); | |
3859 | module_param(debug, int, 0); |