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[net-next-2.6.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4
LT		 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>
222fa076 123#include <linux/mutex.h>
1da177e4
LT		 124#include <linux/sched.h>
125#include <linux/slab.h>
126#include <linux/vmalloc.h>
1da177e4
LT		 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>
4fc268d2 133#include <linux/capability.h>
09fe3ef4 134#include <linux/freezer.h>
1da177e4
LT		 135#include <linux/delay.h>
136#include <linux/timer.h>
cdcdbe0b 137#include <linux/list.h>
1da177e4
LT		 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>
34954ddc 145#include <linux/if_vlan.h>
1da177e4
LT		 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>
d50a6b56 151#include <linux/seq_file.h>
1da177e4 152#include <linux/wait.h>
f404e9a6 153#include <linux/etherdevice.h>
ee74baa7 154#include <linux/kthread.h>
457c4cbc 155#include <net/net_namespace.h>
1da177e4
LT		 156#include <net/checksum.h>
157#include <net/ipv6.h>
158#include <net/addrconf.h>
a553e4a6
JHS		 159#ifdef CONFIG_XFRM
160#include <net/xfrm.h>
161#endif
1da177e4
LT		 162#include <asm/byteorder.h>
163#include <linux/rcupdate.h>
1977f032 164#include <linux/bitops.h>
1da177e4
LT		 165#include <asm/io.h>
166#include <asm/dma.h>
167#include <asm/uaccess.h>
222f1806 168#include <asm/div64.h> /* do_div */
1da177e4
LT		 169#include <asm/timex.h>
170
b163911f 171#define VERSION "pktgen v2.69: Packet Generator for packet performance testing.\n"
1da177e4 172
1da177e4
LT		 173/* The buckets are exponential in 'width' */
174#define LAT_BUCKETS_MAX 32
175#define IP_NAME_SZ 32
ca6549af 176#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 177#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4
LT		 178
179/* Device flag bits */
222f1806
LC		 180#define F_IPSRC_RND (1<<0) /* IP-Src Random */
181#define F_IPDST_RND (1<<1) /* IP-Dst Random */
182#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
183#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
184#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
185#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
186#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
187#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 188#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 189#define F_VID_RND (1<<9) /* Random VLAN ID */
190#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 191#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 192#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 193#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
1da177e4
LT		 194
195/* Thread control flag bits */
222f1806
LC		 196#define T_TERMINATE (1<<0)
197#define T_STOP (1<<1) /* Stop run */
198#define T_RUN (1<<2) /* Start run */
199#define T_REMDEVALL (1<<3) /* Remove all devs */
200#define T_REMDEV (1<<4) /* Remove one dev */
1da177e4 201
1da177e4
LT		 202/* If lock -- can be removed after some work */
203#define if_lock(t) spin_lock(&(t->if_lock));
204#define if_unlock(t) spin_unlock(&(t->if_lock));
205
206/* Used to help with determining the pkts on receive */
207#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 208#define PG_PROC_DIR "pktgen"
209#define PGCTRL "pgctrl"
210static struct proc_dir_entry *pg_proc_dir = NULL;
1da177e4
LT		 211
212#define MAX_CFLOWS 65536
213
34954ddc
FF		 214#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
215#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
216
222f1806 217struct flow_state {
252e3346 218 __be32 cur_daddr;
222f1806 219 int count;
a553e4a6
JHS		 220#ifdef CONFIG_XFRM
221 struct xfrm_state *x;
222#endif
007a531b 223 __u32 flags;
1da177e4
LT		 224};
225
007a531b
JHS		 226/* flow flag bits */
227#define F_INIT (1<<0) /* flow has been initialized */
228
1da177e4 229struct pktgen_dev {
1da177e4
LT		 230 /*
231 * Try to keep frequent/infrequent used vars. separated.
232 */
39df232f
SH		 233 struct proc_dir_entry *entry; /* proc file */
234 struct pktgen_thread *pg_thread;/* the owner */
c26a8016 235 struct list_head list; /* Used for chaining in the thread's run-queue */
1da177e4 236
222f1806 237 int running; /* if this changes to false, the test will stop */
1da177e4 238
222f1806
LC		 239 /* If min != max, then we will either do a linear iteration, or
240 * we will do a random selection from within the range.
241 */
242 __u32 flags;
95ed63f7
AK		 243 int removal_mark; /* non-zero => the device is marked for
244 * removal by worker thread */
1da177e4 245
222f1806
LC		 246 int min_pkt_size; /* = ETH_ZLEN; */
247 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 248 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806
LC		 249 int nfrags;
250 __u32 delay_us; /* Default delay */
251 __u32 delay_ns;
252 __u64 count; /* Default No packets to send */
253 __u64 sofar; /* How many pkts we've sent so far */
254 __u64 tx_bytes; /* How many bytes we've transmitted */
255 __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */
256
257 /* runtime counters relating to clone_skb */
258 __u64 next_tx_us; /* timestamp of when to tx next */
259 __u32 next_tx_ns;
260
261 __u64 allocated_skbs;
262 __u32 clone_count;
263 int last_ok; /* Was last skb sent?
264 * Or a failed transmit of some sort? This will keep
265 * sequence numbers in order, for example.
266 */
267 __u64 started_at; /* micro-seconds */
268 __u64 stopped_at; /* micro-seconds */
269 __u64 idle_acc; /* micro-seconds */
270 __u32 seq_num;
271
272 int clone_skb; /* Use multiple SKBs during packet gen. If this number
273 * is greater than 1, then that many copies of the same
274 * packet will be sent before a new packet is allocated.
275 * For instance, if you want to send 1024 identical packets
276 * before creating a new packet, set clone_skb to 1024.
277 */
278
279 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
280 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
281 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
282 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
283
284 struct in6_addr in6_saddr;
285 struct in6_addr in6_daddr;
286 struct in6_addr cur_in6_daddr;
287 struct in6_addr cur_in6_saddr;
1da177e4 288 /* For ranges */
222f1806
LC		 289 struct in6_addr min_in6_daddr;
290 struct in6_addr max_in6_daddr;
291 struct in6_addr min_in6_saddr;
292 struct in6_addr max_in6_saddr;
293
294 /* If we're doing ranges, random or incremental, then this
295 * defines the min/max for those ranges.
296 */
252e3346
AV		 297 __be32 saddr_min; /* inclusive, source IP address */
298 __be32 saddr_max; /* exclusive, source IP address */
299 __be32 daddr_min; /* inclusive, dest IP address */
300 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 301
302 __u16 udp_src_min; /* inclusive, source UDP port */
303 __u16 udp_src_max; /* exclusive, source UDP port */
304 __u16 udp_dst_min; /* inclusive, dest UDP port */
305 __u16 udp_dst_max; /* exclusive, dest UDP port */
306
1ca7768c
FF		 307 /* DSCP + ECN */
308 __u8 tos; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */
309 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */
310
ca6549af
SW		 311 /* MPLS */
312 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
313 __be32 labels[MAX_MPLS_LABELS];
314
34954ddc
FF		 315 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
316 __u8 vlan_p;
317 __u8 vlan_cfi;
318 __u16 vlan_id; /* 0xffff means no vlan tag */
319
320 __u8 svlan_p;
321 __u8 svlan_cfi;
322 __u16 svlan_id; /* 0xffff means no svlan tag */
323
222f1806
LC		 324 __u32 src_mac_count; /* How many MACs to iterate through */
325 __u32 dst_mac_count; /* How many MACs to iterate through */
326
327 unsigned char dst_mac[ETH_ALEN];
328 unsigned char src_mac[ETH_ALEN];
329
330 __u32 cur_dst_mac_offset;
331 __u32 cur_src_mac_offset;
252e3346
AV		 332 __be32 cur_saddr;
333 __be32 cur_daddr;
222f1806
LC		 334 __u16 cur_udp_dst;
335 __u16 cur_udp_src;
45b270f8 336 __u16 cur_queue_map;
222f1806
LC		 337 __u32 cur_pkt_size;
338
339 __u8 hh[14];
340 /* = {
341 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
342
343 We fill in SRC address later
344 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
345 0x08, 0x00
346 };
347 */
348 __u16 pad; /* pad out the hh struct to an even 16 bytes */
349
350 struct sk_buff *skb; /* skb we are to transmit next, mainly used for when we
351 * are transmitting the same one multiple times
352 */
353 struct net_device *odev; /* The out-going device. Note that the device should
354 * have it's pg_info pointer pointing back to this
355 * device. This will be set when the user specifies
356 * the out-going device name (not when the inject is
357 * started as it used to do.)
358 */
1da177e4 359 struct flow_state *flows;
222f1806
LC		 360 unsigned cflows; /* Concurrent flows (config) */
361 unsigned lflow; /* Flow length (config) */
362 unsigned nflows; /* accumulated flows (stats) */
007a531b 363 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 364
365 u16 queue_map_min;
366 u16 queue_map_max;
367
a553e4a6
JHS		 368#ifdef CONFIG_XFRM
369 __u8 ipsmode; /* IPSEC mode (config) */
370 __u8 ipsproto; /* IPSEC type (config) */
371#endif
39df232f 372 char result[512];
1da177e4
LT		 373};
374
375struct pktgen_hdr {
252e3346
AV		 376 __be32 pgh_magic;
377 __be32 seq_num;
378 __be32 tv_sec;
379 __be32 tv_usec;
1da177e4
LT		 380};
381
382struct pktgen_thread {
222f1806 383 spinlock_t if_lock;
c26a8016 384 struct list_head if_list; /* All device here */
cdcdbe0b 385 struct list_head th_list;
ee74baa7 386 struct task_struct *tsk;
222f1806 387 char result[512];
222f1806
LC		 388
389 /* Field for thread to receive "posted" events terminate, stop ifs etc. */
390
391 u32 control;
1da177e4
LT		 392 int cpu;
393
222f1806 394 wait_queue_head_t queue;
1da177e4
LT		 395};
396
397#define REMOVE 1
398#define FIND 0
399
400/* This code works around the fact that do_div cannot handle two 64-bit
401 numbers, and regular 64-bit division doesn't work on x86 kernels.
402 --Ben
403*/
404
405#define PG_DIV 0
406
407/* This was emailed to LMKL by: Chris Caputo <ccaputo@alt.net>
408 * Function copied/adapted/optimized from:
409 *
410 * nemesis.sourceforge.net/browse/lib/static/intmath/ix86/intmath.c.html
411 *
412 * Copyright 1994, University of Cambridge Computer Laboratory
413 * All Rights Reserved.
414 *
415 */
77933d72 416static inline s64 divremdi3(s64 x, s64 y, int type)
1da177e4 417{
222f1806
LC		 418 u64 a = (x < 0) ? -x : x;
419 u64 b = (y < 0) ? -y : y;
420 u64 res = 0, d = 1;
421
422 if (b > 0) {
423 while (b < a) {
424 b <<= 1;
425 d <<= 1;
426 }
427 }
428
429 do {
430 if (a >= b) {
431 a -= b;
432 res += d;
433 }
434 b >>= 1;
435 d >>= 1;
436 }
437 while (d);
438
439 if (PG_DIV == type) {
440 return (((x ^ y) & (1ll << 63)) == 0) ? res : -(s64) res;
441 } else {
442 return ((x & (1ll << 63)) == 0) ? a : -(s64) a;
443 }
1da177e4
LT		 444}
445
446/* End of hacks to deal with 64-bit math on x86 */
447
b4099fab 448/** Convert to milliseconds */
222f1806 449static inline __u64 tv_to_ms(const struct timeval *tv)
1da177e4 450{
222f1806
LC		 451 __u64 ms = tv->tv_usec / 1000;
452 ms += (__u64) tv->tv_sec * (__u64) 1000;
453 return ms;
1da177e4
LT		 454}
455
1da177e4 456/** Convert to micro-seconds */
222f1806 457static inline __u64 tv_to_us(const struct timeval *tv)
1da177e4 458{
222f1806
LC		 459 __u64 us = tv->tv_usec;
460 us += (__u64) tv->tv_sec * (__u64) 1000000;
461 return us;
1da177e4
LT		 462}
463
222f1806
LC		 464static inline __u64 pg_div(__u64 n, __u32 base)
465{
466 __u64 tmp = n;
467 do_div(tmp, base);
468 /* printk("pktgen: pg_div, n: %llu base: %d rv: %llu\n",
469 n, base, tmp); */
470 return tmp;
1da177e4
LT		 471}
472
222f1806 473static inline __u64 pg_div64(__u64 n, __u64 base)
1da177e4 474{
222f1806 475 __u64 tmp = n;
1da177e4 476/*
b4099fab 477 * How do we know if the architecture we are running on
1da177e4 478 * supports division with 64 bit base?
4ec93edb 479 *
1da177e4 480 */
222f1806 481#if defined(__sparc_v9__) || defined(__powerpc64__) || defined(__alpha__) || defined(__x86_64__) || defined(__ia64__)
1da177e4 482
222f1806 483 do_div(tmp, base);
1da177e4 484#else
222f1806 485 tmp = divremdi3(n, base, PG_DIV);
1da177e4 486#endif
222f1806 487 return tmp;
1da177e4
LT		 488}
489
222f1806 490static inline __u64 getCurMs(void)
1da177e4 491{
222f1806
LC		 492 struct timeval tv;
493 do_gettimeofday(&tv);
494 return tv_to_ms(&tv);
1da177e4
LT		 495}
496
222f1806 497static inline __u64 getCurUs(void)
1da177e4 498{
222f1806
LC		 499 struct timeval tv;
500 do_gettimeofday(&tv);
501 return tv_to_us(&tv);
1da177e4
LT		 502}
503
222f1806 504static inline __u64 tv_diff(const struct timeval *a, const struct timeval *b)
1da177e4 505{
222f1806 506 return tv_to_us(a) - tv_to_us(b);
1da177e4
LT		 507}
508
1da177e4
LT		 509/* old include end */
510
511static char version[] __initdata = VERSION;
512
222f1806
LC		 513static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
514static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
515static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
516 const char *ifname);
1da177e4
LT		 517static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
518static void pktgen_run_all_threads(void);
519static void pktgen_stop_all_threads_ifs(void);
520static int pktgen_stop_device(struct pktgen_dev *pkt_dev);
222f1806 521static void pktgen_stop(struct pktgen_thread *t);
1da177e4 522static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 523
222f1806
LC		 524static unsigned int scan_ip6(const char *s, char ip[16]);
525static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 526
527/* Module parameters, defaults. */
222f1806 528static int pg_count_d = 1000; /* 1000 pkts by default */
f34fbb97
JK		 529static int pg_delay_d;
530static int pg_clone_skb_d;
531static int debug;
1da177e4 532
222fa076 533static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 534static LIST_HEAD(pktgen_threads);
1da177e4 535
1da177e4
LT		 536static struct notifier_block pktgen_notifier_block = {
537 .notifier_call = pktgen_device_event,
538};
539
1da177e4 540/*
4ec93edb 541 * /proc handling functions
1da177e4
LT		 542 *
543 */
544
d50a6b56 545static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 546{
d50a6b56
SH		 547 seq_puts(seq, VERSION);
548 return 0;
1da177e4
LT		 549}
550
222f1806
LC		 551static ssize_t pgctrl_write(struct file *file, const char __user * buf,
552 size_t count, loff_t * ppos)
1da177e4 553{
1da177e4 554 int err = 0;
d50a6b56 555 char data[128];
1da177e4 556
222f1806
LC		 557 if (!capable(CAP_NET_ADMIN)) {
558 err = -EPERM;
1da177e4 559 goto out;
222f1806 560 }
1da177e4 561
d50a6b56
SH		 562 if (count > sizeof(data))
563 count = sizeof(data);
1da177e4 564
1da177e4 565 if (copy_from_user(data, buf, count)) {
b4099fab 566 err = -EFAULT;
d50a6b56 567 goto out;
222f1806
LC		 568 }
569 data[count - 1] = 0; /* Make string */
1da177e4 570
222f1806 571 if (!strcmp(data, "stop"))
1da177e4
LT		 572 pktgen_stop_all_threads_ifs();
573
222f1806 574 else if (!strcmp(data, "start"))
1da177e4
LT		 575 pktgen_run_all_threads();
576
222f1806 577 else
25a8b254 578 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 579
580 err = count;
581
222f1806
LC		 582out:
583 return err;
1da177e4
LT		 584}
585
d50a6b56
SH		 586static int pgctrl_open(struct inode *inode, struct file *file)
587{
588 return single_open(file, pgctrl_show, PDE(inode)->data);
589}
590
9a32144e 591static const struct file_operations pktgen_fops = {
222f1806
LC		 592 .owner = THIS_MODULE,
593 .open = pgctrl_open,
594 .read = seq_read,
595 .llseek = seq_lseek,
596 .write = pgctrl_write,
597 .release = single_release,
d50a6b56
SH		 598};
599
600static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 601{
222f1806
LC		 602 struct pktgen_dev *pkt_dev = seq->private;
603 __u64 sa;
604 __u64 stopped;
605 __u64 now = getCurUs();
0795af57 606 DECLARE_MAC_BUF(mac);
222f1806
LC		 607
608 seq_printf(seq,
609 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
610 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
611 pkt_dev->max_pkt_size);
612
613 seq_printf(seq,
614 " frags: %d delay: %u clone_skb: %d ifname: %s\n",
615 pkt_dev->nfrags,
616 1000 * pkt_dev->delay_us + pkt_dev->delay_ns,
39df232f 617 pkt_dev->clone_skb, pkt_dev->odev->name);
222f1806
LC		 618
619 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
620 pkt_dev->lflow);
621
45b270f8
RO		 622 seq_printf(seq,
623 " queue_map_min: %u queue_map_max: %u\n",
624 pkt_dev->queue_map_min,
625 pkt_dev->queue_map_max);
626
222f1806
LC		 627 if (pkt_dev->flags & F_IPV6) {
628 char b1[128], b2[128], b3[128];
629 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
630 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
631 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
632 seq_printf(seq,
633 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
634 b2, b3);
635
636 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
637 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
638 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
639 seq_printf(seq,
640 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
641 b2, b3);
642
643 } else
644 seq_printf(seq,
645 " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n",
646 pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min,
647 pkt_dev->src_max);
1da177e4 648
222f1806 649 seq_puts(seq, " src_mac: ");
1da177e4 650
0795af57
JP		 651 seq_printf(seq, "%s ",
652 print_mac(mac, is_zero_ether_addr(pkt_dev->src_mac) ?
653 pkt_dev->odev->dev_addr : pkt_dev->src_mac));
222f1806
LC		 654
655 seq_printf(seq, "dst_mac: ");
0795af57 656 seq_printf(seq, "%s\n", print_mac(mac, pkt_dev->dst_mac));
222f1806
LC		 657
658 seq_printf(seq,
659 " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
660 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
661 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
662
663 seq_printf(seq,
ca6549af 664 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 665 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 666
ca6549af
SW		 667 if (pkt_dev->nr_labels) {
668 unsigned i;
669 seq_printf(seq, " mpls: ");
e71a4783 670 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 671 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
672 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
673 }
674
34954ddc
FF		 675 if (pkt_dev->vlan_id != 0xffff) {
676 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
677 pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
678 }
679
680 if (pkt_dev->svlan_id != 0xffff) {
681 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
682 pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
683 }
684
1ca7768c
FF		 685 if (pkt_dev->tos) {
686 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
687 }
688
689 if (pkt_dev->traffic_class) {
690 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
691 }
692
ca6549af
SW		 693 seq_printf(seq, " Flags: ");
694
222f1806
LC		 695 if (pkt_dev->flags & F_IPV6)
696 seq_printf(seq, "IPV6 ");
1da177e4 697
222f1806
LC		 698 if (pkt_dev->flags & F_IPSRC_RND)
699 seq_printf(seq, "IPSRC_RND ");
1da177e4 700
222f1806
LC		 701 if (pkt_dev->flags & F_IPDST_RND)
702 seq_printf(seq, "IPDST_RND ");
1da177e4 703
222f1806
LC		 704 if (pkt_dev->flags & F_TXSIZE_RND)
705 seq_printf(seq, "TXSIZE_RND ");
1da177e4 706
222f1806
LC		 707 if (pkt_dev->flags & F_UDPSRC_RND)
708 seq_printf(seq, "UDPSRC_RND ");
1da177e4 709
222f1806
LC		 710 if (pkt_dev->flags & F_UDPDST_RND)
711 seq_printf(seq, "UDPDST_RND ");
1da177e4 712
ca6549af
SW		 713 if (pkt_dev->flags & F_MPLS_RND)
714 seq_printf(seq, "MPLS_RND ");
715
45b270f8
RO		 716 if (pkt_dev->flags & F_QUEUE_MAP_RND)
717 seq_printf(seq, "QUEUE_MAP_RND ");
718
007a531b
JHS		 719 if (pkt_dev->cflows) {
720 if (pkt_dev->flags & F_FLOW_SEQ)
721 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
722 else
723 seq_printf(seq, "FLOW_RND ");
724 }
725
a553e4a6
JHS		 726#ifdef CONFIG_XFRM
727 if (pkt_dev->flags & F_IPSEC_ON)
728 seq_printf(seq, "IPSEC ");
729#endif
730
222f1806
LC		 731 if (pkt_dev->flags & F_MACSRC_RND)
732 seq_printf(seq, "MACSRC_RND ");
1da177e4 733
222f1806
LC		 734 if (pkt_dev->flags & F_MACDST_RND)
735 seq_printf(seq, "MACDST_RND ");
1da177e4 736
34954ddc
FF		 737 if (pkt_dev->flags & F_VID_RND)
738 seq_printf(seq, "VID_RND ");
739
740 if (pkt_dev->flags & F_SVID_RND)
741 seq_printf(seq, "SVID_RND ");
742
222f1806
LC		 743 seq_puts(seq, "\n");
744
745 sa = pkt_dev->started_at;
746 stopped = pkt_dev->stopped_at;
747 if (pkt_dev->running)
748 stopped = now; /* not really stopped, more like last-running-at */
1da177e4 749
222f1806
LC		 750 seq_printf(seq,
751 "Current:\n pkts-sofar: %llu errors: %llu\n started: %lluus stopped: %lluus idle: %lluus\n",
752 (unsigned long long)pkt_dev->sofar,
753 (unsigned long long)pkt_dev->errors, (unsigned long long)sa,
754 (unsigned long long)stopped,
755 (unsigned long long)pkt_dev->idle_acc);
1da177e4 756
222f1806
LC		 757 seq_printf(seq,
758 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 759 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
760 pkt_dev->cur_src_mac_offset);
1da177e4 761
222f1806 762 if (pkt_dev->flags & F_IPV6) {
1da177e4 763 char b1[128], b2[128];
222f1806
LC		 764 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
765 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
766 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
767 } else
768 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 769 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 770
222f1806 771 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 772 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 773
45b270f8
RO		 774 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
775
222f1806 776 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 777
778 if (pkt_dev->result[0])
222f1806 779 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 780 else
222f1806 781 seq_printf(seq, "Result: Idle\n");
1da177e4 782
d50a6b56 783 return 0;
1da177e4
LT		 784}
785
ca6549af 786
1ca7768c 787static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num)
ca6549af
SW		 788{
789 int i = 0;
790 *num = 0;
791
e71a4783 792 for (; i < maxlen; i++) {
ca6549af
SW		 793 char c;
794 *num <<= 4;
795 if (get_user(c, &user_buffer[i]))
796 return -EFAULT;
797 if ((c >= '0') && (c <= '9'))
798 *num |= c - '0';
799 else if ((c >= 'a') && (c <= 'f'))
800 *num |= c - 'a' + 10;
801 else if ((c >= 'A') && (c <= 'F'))
802 *num |= c - 'A' + 10;
803 else
804 break;
805 }
806 return i;
807}
808
222f1806
LC		 809static int count_trail_chars(const char __user * user_buffer,
810 unsigned int maxlen)
1da177e4
LT		 811{
812 int i;
813
814 for (i = 0; i < maxlen; i++) {
222f1806
LC		 815 char c;
816 if (get_user(c, &user_buffer[i]))
817 return -EFAULT;
818 switch (c) {
1da177e4
LT		 819 case '\"':
820 case '\n':
821 case '\r':
822 case '\t':
823 case ' ':
824 case '=':
825 break;
826 default:
827 goto done;
3ff50b79 828 }
1da177e4
LT		 829 }
830done:
831 return i;
832}
833
222f1806
LC		 834static unsigned long num_arg(const char __user * user_buffer,
835 unsigned long maxlen, unsigned long *num)
1da177e4
LT		 836{
837 int i = 0;
838 *num = 0;
222f1806
LC		 839
840 for (; i < maxlen; i++) {
841 char c;
842 if (get_user(c, &user_buffer[i]))
843 return -EFAULT;
844 if ((c >= '0') && (c <= '9')) {
1da177e4 845 *num *= 10;
222f1806 846 *num += c - '0';
1da177e4
LT		 847 } else
848 break;
849 }
850 return i;
851}
852
222f1806 853static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4
LT		 854{
855 int i = 0;
856
222f1806
LC		 857 for (; i < maxlen; i++) {
858 char c;
859 if (get_user(c, &user_buffer[i]))
860 return -EFAULT;
861 switch (c) {
1da177e4
LT		 862 case '\"':
863 case '\n':
864 case '\r':
865 case '\t':
866 case ' ':
867 goto done_str;
868 break;
869 default:
870 break;
3ff50b79 871 }
1da177e4
LT		 872 }
873done_str:
1da177e4
LT		 874 return i;
875}
876
ca6549af
SW		 877static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
878{
879 unsigned n = 0;
880 char c;
881 ssize_t i = 0;
882 int len;
883
884 pkt_dev->nr_labels = 0;
885 do {
886 __u32 tmp;
1ca7768c 887 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 888 if (len <= 0)
889 return len;
890 pkt_dev->labels[n] = htonl(tmp);
891 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
892 pkt_dev->flags |= F_MPLS_RND;
893 i += len;
894 if (get_user(c, &buffer[i]))
895 return -EFAULT;
896 i++;
897 n++;
898 if (n >= MAX_MPLS_LABELS)
899 return -E2BIG;
e71a4783 900 } while (c == ',');
ca6549af
SW		 901
902 pkt_dev->nr_labels = n;
903 return i;
904}
905
222f1806
LC		 906static ssize_t pktgen_if_write(struct file *file,
907 const char __user * user_buffer, size_t count,
908 loff_t * offset)
1da177e4 909{
222f1806
LC		 910 struct seq_file *seq = (struct seq_file *)file->private_data;
911 struct pktgen_dev *pkt_dev = seq->private;
1da177e4
LT		 912 int i = 0, max, len;
913 char name[16], valstr[32];
914 unsigned long value = 0;
222f1806
LC		 915 char *pg_result = NULL;
916 int tmp = 0;
1da177e4 917 char buf[128];
222f1806
LC		 918
919 pg_result = &(pkt_dev->result[0]);
920
1da177e4 921 if (count < 1) {
25a8b254 922 printk(KERN_WARNING "pktgen: wrong command format\n");
1da177e4
LT		 923 return -EINVAL;
924 }
222f1806 925
1da177e4
LT		 926 max = count - i;
927 tmp = count_trail_chars(&user_buffer[i], max);
222f1806 928 if (tmp < 0) {
25a8b254 929 printk(KERN_WARNING "pktgen: illegal format\n");
222f1806 930 return tmp;
1da177e4 931 }
222f1806
LC		 932 i += tmp;
933
1da177e4
LT		 934 /* Read variable name */
935
936 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806
LC		 937 if (len < 0) {
938 return len;
939 }
1da177e4 940 memset(name, 0, sizeof(name));
222f1806 941 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 942 return -EFAULT;
943 i += len;
222f1806
LC		 944
945 max = count - i;
1da177e4 946 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 947 if (len < 0)
948 return len;
949
1da177e4
LT		 950 i += len;
951
952 if (debug) {
222f1806
LC		 953 char tb[count + 1];
954 if (copy_from_user(tb, user_buffer, count))
1da177e4 955 return -EFAULT;
222f1806 956 tb[count] = 0;
25a8b254 957 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 958 (unsigned long)count, tb);
959 }
1da177e4
LT		 960
961 if (!strcmp(name, "min_pkt_size")) {
962 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 963 if (len < 0) {
964 return len;
965 }
1da177e4 966 i += len;
222f1806
LC		 967 if (value < 14 + 20 + 8)
968 value = 14 + 20 + 8;
969 if (value != pkt_dev->min_pkt_size) {
970 pkt_dev->min_pkt_size = value;
971 pkt_dev->cur_pkt_size = value;
972 }
973 sprintf(pg_result, "OK: min_pkt_size=%u",
974 pkt_dev->min_pkt_size);
1da177e4
LT		 975 return count;
976 }
977
222f1806 978 if (!strcmp(name, "max_pkt_size")) {
1da177e4 979 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 980 if (len < 0) {
981 return len;
982 }
1da177e4 983 i += len;
222f1806
LC		 984 if (value < 14 + 20 + 8)
985 value = 14 + 20 + 8;
986 if (value != pkt_dev->max_pkt_size) {
987 pkt_dev->max_pkt_size = value;
988 pkt_dev->cur_pkt_size = value;
989 }
990 sprintf(pg_result, "OK: max_pkt_size=%u",
991 pkt_dev->max_pkt_size);
1da177e4
LT		 992 return count;
993 }
994
222f1806 995 /* Shortcut for min = max */
1da177e4
LT		 996
997 if (!strcmp(name, "pkt_size")) {
998 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 999 if (len < 0) {
1000 return len;
1001 }
1da177e4 1002 i += len;
222f1806
LC		 1003 if (value < 14 + 20 + 8)
1004 value = 14 + 20 + 8;
1005 if (value != pkt_dev->min_pkt_size) {
1006 pkt_dev->min_pkt_size = value;
1007 pkt_dev->max_pkt_size = value;
1008 pkt_dev->cur_pkt_size = value;
1009 }
1da177e4
LT		 1010 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
1011 return count;
1012 }
1013
222f1806 1014 if (!strcmp(name, "debug")) {
1da177e4 1015 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1016 if (len < 0) {
1017 return len;
1018 }
1da177e4 1019 i += len;
222f1806 1020 debug = value;
1da177e4
LT		 1021 sprintf(pg_result, "OK: debug=%u", debug);
1022 return count;
1023 }
1024
222f1806 1025 if (!strcmp(name, "frags")) {
1da177e4 1026 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1027 if (len < 0) {
1028 return len;
1029 }
1da177e4
LT		 1030 i += len;
1031 pkt_dev->nfrags = value;
1032 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
1033 return count;
1034 }
1035 if (!strcmp(name, "delay")) {
1036 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1037 if (len < 0) {
1038 return len;
1039 }
1da177e4
LT		 1040 i += len;
1041 if (value == 0x7FFFFFFF) {
1042 pkt_dev->delay_us = 0x7FFFFFFF;
1043 pkt_dev->delay_ns = 0;
1044 } else {
1045 pkt_dev->delay_us = value / 1000;
1046 pkt_dev->delay_ns = value % 1000;
1047 }
222f1806
LC		 1048 sprintf(pg_result, "OK: delay=%u",
1049 1000 * pkt_dev->delay_us + pkt_dev->delay_ns);
1da177e4
LT		 1050 return count;
1051 }
222f1806 1052 if (!strcmp(name, "udp_src_min")) {
1da177e4 1053 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1054 if (len < 0) {
1055 return len;
1056 }
1da177e4 1057 i += len;
222f1806
LC		 1058 if (value != pkt_dev->udp_src_min) {
1059 pkt_dev->udp_src_min = value;
1060 pkt_dev->cur_udp_src = value;
1061 }
1da177e4
LT		 1062 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1063 return count;
1064 }
222f1806 1065 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1066 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1067 if (len < 0) {
1068 return len;
1069 }
1da177e4 1070 i += len;
222f1806
LC		 1071 if (value != pkt_dev->udp_dst_min) {
1072 pkt_dev->udp_dst_min = value;
1073 pkt_dev->cur_udp_dst = value;
1074 }
1da177e4
LT		 1075 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1076 return count;
1077 }
222f1806 1078 if (!strcmp(name, "udp_src_max")) {
1da177e4 1079 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1080 if (len < 0) {
1081 return len;
1082 }
1da177e4 1083 i += len;
222f1806
LC		 1084 if (value != pkt_dev->udp_src_max) {
1085 pkt_dev->udp_src_max = value;
1086 pkt_dev->cur_udp_src = value;
1087 }
1da177e4
LT		 1088 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1089 return count;
1090 }
222f1806 1091 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1092 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1093 if (len < 0) {
1094 return len;
1095 }
1da177e4 1096 i += len;
222f1806
LC		 1097 if (value != pkt_dev->udp_dst_max) {
1098 pkt_dev->udp_dst_max = value;
1099 pkt_dev->cur_udp_dst = value;
1100 }
1da177e4
LT		 1101 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1102 return count;
1103 }
1104 if (!strcmp(name, "clone_skb")) {
1105 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1106 if (len < 0) {
1107 return len;
1108 }
1da177e4 1109 i += len;
222f1806
LC		 1110 pkt_dev->clone_skb = value;
1111
1da177e4
LT		 1112 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1113 return count;
1114 }
1115 if (!strcmp(name, "count")) {
1116 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1117 if (len < 0) {
1118 return len;
1119 }
1da177e4
LT		 1120 i += len;
1121 pkt_dev->count = value;
1122 sprintf(pg_result, "OK: count=%llu",
222f1806 1123 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1124 return count;
1125 }
1126 if (!strcmp(name, "src_mac_count")) {
1127 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1128 if (len < 0) {
1129 return len;
1130 }
1da177e4
LT		 1131 i += len;
1132 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1133 pkt_dev->src_mac_count = value;
1134 pkt_dev->cur_src_mac_offset = 0;
1135 }
1136 sprintf(pg_result, "OK: src_mac_count=%d",
1137 pkt_dev->src_mac_count);
1da177e4
LT		 1138 return count;
1139 }
1140 if (!strcmp(name, "dst_mac_count")) {
1141 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1142 if (len < 0) {
1143 return len;
1144 }
1da177e4
LT		 1145 i += len;
1146 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1147 pkt_dev->dst_mac_count = value;
1148 pkt_dev->cur_dst_mac_offset = 0;
1149 }
1150 sprintf(pg_result, "OK: dst_mac_count=%d",
1151 pkt_dev->dst_mac_count);
1da177e4
LT		 1152 return count;
1153 }
1154 if (!strcmp(name, "flag")) {
222f1806
LC		 1155 char f[32];
1156 memset(f, 0, 32);
1da177e4 1157 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1158 if (len < 0) {
1159 return len;
1160 }
1da177e4
LT		 1161 if (copy_from_user(f, &user_buffer[i], len))
1162 return -EFAULT;
1163 i += len;
222f1806
LC		 1164 if (strcmp(f, "IPSRC_RND") == 0)
1165 pkt_dev->flags |= F_IPSRC_RND;
1166
1167 else if (strcmp(f, "!IPSRC_RND") == 0)
1168 pkt_dev->flags &= ~F_IPSRC_RND;
1169
1170 else if (strcmp(f, "TXSIZE_RND") == 0)
1171 pkt_dev->flags |= F_TXSIZE_RND;
1172
1173 else if (strcmp(f, "!TXSIZE_RND") == 0)
1174 pkt_dev->flags &= ~F_TXSIZE_RND;
1175
1176 else if (strcmp(f, "IPDST_RND") == 0)
1177 pkt_dev->flags |= F_IPDST_RND;
1178
1179 else if (strcmp(f, "!IPDST_RND") == 0)
1180 pkt_dev->flags &= ~F_IPDST_RND;
1181
1182 else if (strcmp(f, "UDPSRC_RND") == 0)
1183 pkt_dev->flags |= F_UDPSRC_RND;
1184
1185 else if (strcmp(f, "!UDPSRC_RND") == 0)
1186 pkt_dev->flags &= ~F_UDPSRC_RND;
1187
1188 else if (strcmp(f, "UDPDST_RND") == 0)
1189 pkt_dev->flags |= F_UDPDST_RND;
1190
1191 else if (strcmp(f, "!UDPDST_RND") == 0)
1192 pkt_dev->flags &= ~F_UDPDST_RND;
1193
1194 else if (strcmp(f, "MACSRC_RND") == 0)
1195 pkt_dev->flags |= F_MACSRC_RND;
1196
1197 else if (strcmp(f, "!MACSRC_RND") == 0)
1198 pkt_dev->flags &= ~F_MACSRC_RND;
1199
1200 else if (strcmp(f, "MACDST_RND") == 0)
1201 pkt_dev->flags |= F_MACDST_RND;
1202
1203 else if (strcmp(f, "!MACDST_RND") == 0)
1204 pkt_dev->flags &= ~F_MACDST_RND;
1205
ca6549af
SW		 1206 else if (strcmp(f, "MPLS_RND") == 0)
1207 pkt_dev->flags |= F_MPLS_RND;
1208
1209 else if (strcmp(f, "!MPLS_RND") == 0)
1210 pkt_dev->flags &= ~F_MPLS_RND;
1211
34954ddc
FF		 1212 else if (strcmp(f, "VID_RND") == 0)
1213 pkt_dev->flags |= F_VID_RND;
1214
1215 else if (strcmp(f, "!VID_RND") == 0)
1216 pkt_dev->flags &= ~F_VID_RND;
1217
1218 else if (strcmp(f, "SVID_RND") == 0)
1219 pkt_dev->flags |= F_SVID_RND;
1220
1221 else if (strcmp(f, "!SVID_RND") == 0)
1222 pkt_dev->flags &= ~F_SVID_RND;
1223
007a531b
JHS		 1224 else if (strcmp(f, "FLOW_SEQ") == 0)
1225 pkt_dev->flags |= F_FLOW_SEQ;
1226
45b270f8
RO		 1227 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1228 pkt_dev->flags |= F_QUEUE_MAP_RND;
1229
1230 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1231 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
a553e4a6
JHS		 1232#ifdef CONFIG_XFRM
1233 else if (strcmp(f, "IPSEC") == 0)
1234 pkt_dev->flags |= F_IPSEC_ON;
1235#endif
1236
1ca7768c
FF		 1237 else if (strcmp(f, "!IPV6") == 0)
1238 pkt_dev->flags &= ~F_IPV6;
1239
222f1806
LC		 1240 else {
1241 sprintf(pg_result,
1242 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1243 f,
1ca7768c 1244 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
a553e4a6 1245 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
222f1806
LC		 1246 return count;
1247 }
1da177e4
LT		 1248 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1249 return count;
1250 }
1251 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1252 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
222f1806
LC		 1253 if (len < 0) {
1254 return len;
1255 }
1da177e4 1256
222f1806 1257 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1258 return -EFAULT;
222f1806
LC		 1259 buf[len] = 0;
1260 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1261 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1262 strncpy(pkt_dev->dst_min, buf, len);
1263 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1264 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1265 }
1266 if (debug)
25a8b254 1267 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1268 pkt_dev->dst_min);
1269 i += len;
1da177e4
LT		 1270 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1271 return count;
1272 }
1273 if (!strcmp(name, "dst_max")) {
1274 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
222f1806
LC		 1275 if (len < 0) {
1276 return len;
1277 }
1da177e4 1278
222f1806 1279 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1280 return -EFAULT;
1281
222f1806
LC		 1282 buf[len] = 0;
1283 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1284 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1285 strncpy(pkt_dev->dst_max, buf, len);
1286 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1287 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1288 }
1289 if (debug)
25a8b254 1290 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1291 pkt_dev->dst_max);
1da177e4
LT		 1292 i += len;
1293 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1294 return count;
1295 }
1296 if (!strcmp(name, "dst6")) {
1297 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1298 if (len < 0)
1299 return len;
1da177e4
LT		 1300
1301 pkt_dev->flags |= F_IPV6;
1302
222f1806 1303 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1304 return -EFAULT;
222f1806 1305 buf[len] = 0;
1da177e4
LT		 1306
1307 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1308 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1309
1310 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1311
222f1806 1312 if (debug)
25a8b254 1313 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1314
222f1806 1315 i += len;
1da177e4
LT		 1316 sprintf(pg_result, "OK: dst6=%s", buf);
1317 return count;
1318 }
1319 if (!strcmp(name, "dst6_min")) {
1320 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1321 if (len < 0)
1322 return len;
1da177e4
LT		 1323
1324 pkt_dev->flags |= F_IPV6;
1325
222f1806 1326 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1327 return -EFAULT;
222f1806 1328 buf[len] = 0;
1da177e4
LT		 1329
1330 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1331 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1332
222f1806
LC		 1333 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1334 &pkt_dev->min_in6_daddr);
1335 if (debug)
25a8b254 1336 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1337
222f1806 1338 i += len;
1da177e4
LT		 1339 sprintf(pg_result, "OK: dst6_min=%s", buf);
1340 return count;
1341 }
1342 if (!strcmp(name, "dst6_max")) {
1343 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1344 if (len < 0)
1345 return len;
1da177e4
LT		 1346
1347 pkt_dev->flags |= F_IPV6;
1348
222f1806 1349 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1350 return -EFAULT;
222f1806 1351 buf[len] = 0;
1da177e4
LT		 1352
1353 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1354 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1355
222f1806 1356 if (debug)
25a8b254 1357 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1358
222f1806 1359 i += len;
1da177e4
LT		 1360 sprintf(pg_result, "OK: dst6_max=%s", buf);
1361 return count;
1362 }
1363 if (!strcmp(name, "src6")) {
1364 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1365 if (len < 0)
1366 return len;
1da177e4
LT		 1367
1368 pkt_dev->flags |= F_IPV6;
1369
222f1806 1370 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1371 return -EFAULT;
222f1806 1372 buf[len] = 0;
1da177e4
LT		 1373
1374 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1375 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1376
1377 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1378
222f1806 1379 if (debug)
25a8b254 1380 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1381
1382 i += len;
1da177e4
LT		 1383 sprintf(pg_result, "OK: src6=%s", buf);
1384 return count;
1385 }
1386 if (!strcmp(name, "src_min")) {
1387 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
222f1806
LC		 1388 if (len < 0) {
1389 return len;
1390 }
1391 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1392 return -EFAULT;
222f1806
LC		 1393 buf[len] = 0;
1394 if (strcmp(buf, pkt_dev->src_min) != 0) {
1395 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1396 strncpy(pkt_dev->src_min, buf, len);
1397 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1398 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1399 }
1400 if (debug)
25a8b254 1401 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1402 pkt_dev->src_min);
1da177e4
LT		 1403 i += len;
1404 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1405 return count;
1406 }
1407 if (!strcmp(name, "src_max")) {
1408 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
222f1806
LC		 1409 if (len < 0) {
1410 return len;
1411 }
1412 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1413 return -EFAULT;
222f1806
LC		 1414 buf[len] = 0;
1415 if (strcmp(buf, pkt_dev->src_max) != 0) {
1416 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1417 strncpy(pkt_dev->src_max, buf, len);
1418 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1419 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1420 }
1421 if (debug)
25a8b254 1422 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1423 pkt_dev->src_max);
1da177e4
LT		 1424 i += len;
1425 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1426 return count;
1427 }
1428 if (!strcmp(name, "dst_mac")) {
1429 char *v = valstr;
f404e9a6 1430 unsigned char old_dmac[ETH_ALEN];
1da177e4 1431 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1432 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1433
1da177e4 1434 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1435 if (len < 0) {
1436 return len;
1437 }
1da177e4 1438 memset(valstr, 0, sizeof(valstr));
222f1806 1439 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1440 return -EFAULT;
1441 i += len;
1442
222f1806 1443 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1444 if (*v >= '0' && *v <= '9') {
1445 *m *= 16;
1446 *m += *v - '0';
1447 }
1448 if (*v >= 'A' && *v <= 'F') {
1449 *m *= 16;
1450 *m += *v - 'A' + 10;
1451 }
1452 if (*v >= 'a' && *v <= 'f') {
1453 *m *= 16;
1454 *m += *v - 'a' + 10;
1455 }
1456 if (*v == ':') {
1457 m++;
1458 *m = 0;
1459 }
1460 }
1461
1462 /* Set up Dest MAC */
f404e9a6
KK		 1463 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1464 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1465
1da177e4
LT		 1466 sprintf(pg_result, "OK: dstmac");
1467 return count;
1468 }
1469 if (!strcmp(name, "src_mac")) {
1470 char *v = valstr;
ce5d0b47 1471 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1472 unsigned char *m = pkt_dev->src_mac;
1473
ce5d0b47
AR		 1474 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1475
1da177e4 1476 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1477 if (len < 0) {
1478 return len;
1479 }
1da177e4 1480 memset(valstr, 0, sizeof(valstr));
222f1806 1481 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1482 return -EFAULT;
1483 i += len;
1484
222f1806 1485 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1486 if (*v >= '0' && *v <= '9') {
1487 *m *= 16;
1488 *m += *v - '0';
1489 }
1490 if (*v >= 'A' && *v <= 'F') {
1491 *m *= 16;
1492 *m += *v - 'A' + 10;
1493 }
1494 if (*v >= 'a' && *v <= 'f') {
1495 *m *= 16;
1496 *m += *v - 'a' + 10;
1497 }
1498 if (*v == ':') {
1499 m++;
1500 *m = 0;
1501 }
222f1806 1502 }
1da177e4 1503
ce5d0b47
AR		 1504 /* Set up Src MAC */
1505 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1506 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1507
222f1806 1508 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1509 return count;
1510 }
1511
222f1806
LC		 1512 if (!strcmp(name, "clear_counters")) {
1513 pktgen_clear_counters(pkt_dev);
1514 sprintf(pg_result, "OK: Clearing counters.\n");
1515 return count;
1516 }
1da177e4
LT		 1517
1518 if (!strcmp(name, "flows")) {
1519 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1520 if (len < 0) {
1521 return len;
1522 }
1da177e4
LT		 1523 i += len;
1524 if (value > MAX_CFLOWS)
1525 value = MAX_CFLOWS;
1526
1527 pkt_dev->cflows = value;
1528 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1529 return count;
1530 }
1531
1532 if (!strcmp(name, "flowlen")) {
1533 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1534 if (len < 0) {
1535 return len;
1536 }
1da177e4
LT		 1537 i += len;
1538 pkt_dev->lflow = value;
1539 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1540 return count;
1541 }
222f1806 1542
45b270f8
RO		 1543 if (!strcmp(name, "queue_map_min")) {
1544 len = num_arg(&user_buffer[i], 5, &value);
1545 if (len < 0) {
1546 return len;
1547 }
1548 i += len;
1549 pkt_dev->queue_map_min = value;
1550 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1551 return count;
1552 }
1553
1554 if (!strcmp(name, "queue_map_max")) {
1555 len = num_arg(&user_buffer[i], 5, &value);
1556 if (len < 0) {
1557 return len;
1558 }
1559 i += len;
1560 pkt_dev->queue_map_max = value;
1561 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1562 return count;
1563 }
1564
ca6549af 1565 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1566 unsigned n, cnt;
1567
ca6549af 1568 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1569 if (len < 0)
1570 return len;
ca6549af 1571 i += len;
cfcabdcc 1572 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1573 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1574 cnt += sprintf(pg_result + cnt,
1575 "%08x%s", ntohl(pkt_dev->labels[n]),
1576 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1577
1578 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1579 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1580 pkt_dev->svlan_id = 0xffff;
1581
1582 if (debug)
25a8b254 1583 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1584 }
1585 return count;
1586 }
1587
1588 if (!strcmp(name, "vlan_id")) {
1589 len = num_arg(&user_buffer[i], 4, &value);
1590 if (len < 0) {
1591 return len;
1592 }
1593 i += len;
1594 if (value <= 4095) {
1595 pkt_dev->vlan_id = value; /* turn on VLAN */
1596
1597 if (debug)
25a8b254 1598 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1599
1600 if (debug && pkt_dev->nr_labels)
25a8b254 1601 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1602
1603 pkt_dev->nr_labels = 0; /* turn off MPLS */
1604 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1605 } else {
1606 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1607 pkt_dev->svlan_id = 0xffff;
1608
1609 if (debug)
25a8b254 1610 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1611 }
1612 return count;
1613 }
1614
1615 if (!strcmp(name, "vlan_p")) {
1616 len = num_arg(&user_buffer[i], 1, &value);
1617 if (len < 0) {
1618 return len;
1619 }
1620 i += len;
1621 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1622 pkt_dev->vlan_p = value;
1623 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1624 } else {
1625 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1626 }
1627 return count;
1628 }
1629
1630 if (!strcmp(name, "vlan_cfi")) {
1631 len = num_arg(&user_buffer[i], 1, &value);
1632 if (len < 0) {
1633 return len;
1634 }
1635 i += len;
1636 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1637 pkt_dev->vlan_cfi = value;
1638 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1639 } else {
1640 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1641 }
1642 return count;
1643 }
1644
1645 if (!strcmp(name, "svlan_id")) {
1646 len = num_arg(&user_buffer[i], 4, &value);
1647 if (len < 0) {
1648 return len;
1649 }
1650 i += len;
1651 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1652 pkt_dev->svlan_id = value; /* turn on SVLAN */
1653
1654 if (debug)
25a8b254 1655 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1656
1657 if (debug && pkt_dev->nr_labels)
25a8b254 1658 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1659
1660 pkt_dev->nr_labels = 0; /* turn off MPLS */
1661 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1662 } else {
1663 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1664 pkt_dev->svlan_id = 0xffff;
1665
1666 if (debug)
25a8b254 1667 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1668 }
1669 return count;
1670 }
1671
1672 if (!strcmp(name, "svlan_p")) {
1673 len = num_arg(&user_buffer[i], 1, &value);
1674 if (len < 0) {
1675 return len;
1676 }
1677 i += len;
1678 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1679 pkt_dev->svlan_p = value;
1680 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1681 } else {
1682 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1683 }
1684 return count;
1685 }
1686
1687 if (!strcmp(name, "svlan_cfi")) {
1688 len = num_arg(&user_buffer[i], 1, &value);
1689 if (len < 0) {
1690 return len;
1691 }
1692 i += len;
1693 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1694 pkt_dev->svlan_cfi = value;
1695 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1696 } else {
1697 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1698 }
ca6549af
SW		 1699 return count;
1700 }
1701
1ca7768c
FF		 1702 if (!strcmp(name, "tos")) {
1703 __u32 tmp_value = 0;
1704 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1705 if (len < 0) {
1706 return len;
1707 }
1708 i += len;
1709 if (len == 2) {
1710 pkt_dev->tos = tmp_value;
1711 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1712 } else {
1713 sprintf(pg_result, "ERROR: tos must be 00-ff");
1714 }
1715 return count;
1716 }
1717
1718 if (!strcmp(name, "traffic_class")) {
1719 __u32 tmp_value = 0;
1720 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1721 if (len < 0) {
1722 return len;
1723 }
1724 i += len;
1725 if (len == 2) {
1726 pkt_dev->traffic_class = tmp_value;
1727 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1728 } else {
1729 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1730 }
1731 return count;
1732 }
1733
1da177e4
LT		 1734 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1735 return -EINVAL;
1736}
1737
d50a6b56 1738static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1739{
d50a6b56
SH		 1740 return single_open(file, pktgen_if_show, PDE(inode)->data);
1741}
1da177e4 1742
9a32144e 1743static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1744 .owner = THIS_MODULE,
1745 .open = pktgen_if_open,
1746 .read = seq_read,
1747 .llseek = seq_lseek,
1748 .write = pktgen_if_write,
1749 .release = single_release,
d50a6b56 1750};
1da177e4 1751
d50a6b56
SH		 1752static int pktgen_thread_show(struct seq_file *seq, void *v)
1753{
222f1806 1754 struct pktgen_thread *t = seq->private;
c26a8016 1755 struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1756
1757 BUG_ON(!t);
1da177e4 1758
222f1806 1759 seq_printf(seq, "Running: ");
1da177e4 1760
222f1806 1761 if_lock(t);
c26a8016 1762 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1763 if (pkt_dev->running)
39df232f 1764 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4 1765
222f1806
LC		 1766 seq_printf(seq, "\nStopped: ");
1767
c26a8016 1768 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1769 if (!pkt_dev->running)
39df232f 1770 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4
LT		 1771
1772 if (t->result[0])
d50a6b56 1773 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1774 else
d50a6b56 1775 seq_printf(seq, "\nResult: NA\n");
1da177e4 1776
222f1806 1777 if_unlock(t);
1da177e4 1778
d50a6b56 1779 return 0;
1da177e4
LT		 1780}
1781
d50a6b56 1782static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1783 const char __user * user_buffer,
1784 size_t count, loff_t * offset)
1da177e4 1785{
222f1806
LC		 1786 struct seq_file *seq = (struct seq_file *)file->private_data;
1787 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1788 int i = 0, max, len, ret;
1789 char name[40];
222f1806 1790 char *pg_result;
d50a6b56 1791
1da177e4 1792 if (count < 1) {
222f1806 1793 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1794 return -EINVAL;
1795 }
d50a6b56 1796
1da177e4 1797 max = count - i;
222f1806
LC		 1798 len = count_trail_chars(&user_buffer[i], max);
1799 if (len < 0)
d50a6b56
SH		 1800 return len;
1801
1da177e4 1802 i += len;
d50a6b56 1803
1da177e4
LT		 1804 /* Read variable name */
1805
1806 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1807 if (len < 0)
d50a6b56 1808 return len;
222f1806 1809
1da177e4
LT		 1810 memset(name, 0, sizeof(name));
1811 if (copy_from_user(name, &user_buffer[i], len))
1812 return -EFAULT;
1813 i += len;
d50a6b56 1814
222f1806 1815 max = count - i;
1da177e4 1816 len = count_trail_chars(&user_buffer[i], max);
222f1806 1817 if (len < 0)
d50a6b56
SH		 1818 return len;
1819
1da177e4
LT		 1820 i += len;
1821
d50a6b56 1822 if (debug)
25a8b254
DM		 1823 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1824 name, (unsigned long)count);
1da177e4 1825
222f1806 1826 if (!t) {
25a8b254 1827 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1828 ret = -EINVAL;
1829 goto out;
1830 }
1831
1832 pg_result = &(t->result[0]);
1833
222f1806
LC		 1834 if (!strcmp(name, "add_device")) {
1835 char f[32];
1836 memset(f, 0, 32);
1da177e4 1837 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1838 if (len < 0) {
1839 ret = len;
1da177e4
LT		 1840 goto out;
1841 }
222f1806 1842 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1843 return -EFAULT;
1844 i += len;
6146e6a4 1845 mutex_lock(&pktgen_thread_lock);
222f1806 1846 pktgen_add_device(t, f);
6146e6a4 1847 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1848 ret = count;
1849 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1850 goto out;
1851 }
1852
222f1806 1853 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1854 mutex_lock(&pktgen_thread_lock);
95ed63f7 1855 t->control |= T_REMDEVALL;
6146e6a4 1856 mutex_unlock(&pktgen_thread_lock);
222f1806 1857 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1858 ret = count;
222f1806 1859 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1860 goto out;
1861 }
1862
222f1806 1863 if (!strcmp(name, "max_before_softirq")) {
b163911f 1864 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1865 ret = count;
1da177e4
LT		 1866 goto out;
1867 }
1868
1869 ret = -EINVAL;
222f1806 1870out:
1da177e4
LT		 1871 return ret;
1872}
1873
d50a6b56 1874static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1875{
d50a6b56 1876 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1877}
1878
9a32144e 1879static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1880 .owner = THIS_MODULE,
1881 .open = pktgen_thread_open,
1882 .read = seq_read,
1883 .llseek = seq_lseek,
1884 .write = pktgen_thread_write,
1885 .release = single_release,
d50a6b56 1886};
1da177e4
LT		 1887
1888/* Think find or remove for NN */
222f1806 1889static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1890{
1891 struct pktgen_thread *t;
1892 struct pktgen_dev *pkt_dev = NULL;
1893
cdcdbe0b 1894 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4
LT		 1895 pkt_dev = pktgen_find_dev(t, ifname);
1896 if (pkt_dev) {
222f1806
LC		 1897 if (remove) {
1898 if_lock(t);
1899 pkt_dev->removal_mark = 1;
1900 t->control |= T_REMDEV;
1901 if_unlock(t);
1902 }
1da177e4
LT		 1903 break;
1904 }
1da177e4 1905 }
222f1806 1906 return pkt_dev;
1da177e4
LT		 1907}
1908
95ed63f7
AK		 1909/*
1910 * mark a device for removal
1911 */
39df232f 1912static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1913{
1914 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1915 const int max_tries = 10, msec_per_try = 125;
1916 int i = 0;
95ed63f7 1917
6146e6a4 1918 mutex_lock(&pktgen_thread_lock);
25c4e53a 1919 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1920
222f1806 1921 while (1) {
95ed63f7
AK		 1922
1923 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1924 if (pkt_dev == NULL)
1925 break; /* success */
95ed63f7 1926
6146e6a4 1927 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1928 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1929 "to disappear....\n", ifname);
95ed63f7 1930 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1931 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1932
1933 if (++i >= max_tries) {
25a8b254
DM		 1934 printk(KERN_ERR "pktgen_mark_device: timed out after "
1935 "waiting %d msec for device %s to be removed\n",
222f1806 1936 msec_per_try * i, ifname);
95ed63f7
AK		 1937 break;
1938 }
1939
1940 }
1941
6146e6a4 1942 mutex_unlock(&pktgen_thread_lock);
39df232f 1943}
95ed63f7 1944
39df232f
SH		 1945static void pktgen_change_name(struct net_device *dev)
1946{
1947 struct pktgen_thread *t;
1948
1949 list_for_each_entry(t, &pktgen_threads, th_list) {
1950 struct pktgen_dev *pkt_dev;
1951
1952 list_for_each_entry(pkt_dev, &t->if_list, list) {
1953 if (pkt_dev->odev != dev)
1954 continue;
1955
1956 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1957
1958 pkt_dev->entry = create_proc_entry(dev->name, 0600,
1959 pg_proc_dir);
1960 if (!pkt_dev->entry)
1961 printk(KERN_ERR "pktgen: can't move proc "
1962 " entry for '%s'\n", dev->name);
1963 break;
1964 }
1965 }
1da177e4
LT		 1966}
1967
222f1806
LC		 1968static int pktgen_device_event(struct notifier_block *unused,
1969 unsigned long event, void *ptr)
1da177e4 1970{
39df232f 1971 struct net_device *dev = ptr;
1da177e4 1972
e9dc8653
EB		 1973 if (dev->nd_net != &init_net)
1974 return NOTIFY_DONE;
1975
1da177e4
LT		 1976 /* It is OK that we do not hold the group lock right now,
1977 * as we run under the RTNL lock.
1978 */
1979
1980 switch (event) {
39df232f
SH		 1981 case NETDEV_CHANGENAME:
1982 pktgen_change_name(dev);
1da177e4 1983 break;
222f1806 1984
1da177e4 1985 case NETDEV_UNREGISTER:
222f1806 1986 pktgen_mark_device(dev->name);
1da177e4 1987 break;
3ff50b79 1988 }
1da177e4
LT		 1989
1990 return NOTIFY_DONE;
1991}
1992
1993/* Associate pktgen_dev with a device. */
1994
39df232f 1995static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1996{
1da177e4 1997 struct net_device *odev;
39df232f 1998 int err;
1da177e4
LT		 1999
2000 /* Clean old setups */
1da177e4
LT		 2001 if (pkt_dev->odev) {
2002 dev_put(pkt_dev->odev);
222f1806
LC		 2003 pkt_dev->odev = NULL;
2004 }
1da177e4 2005
881d966b 2006 odev = dev_get_by_name(&init_net, ifname);
1da177e4 2007 if (!odev) {
25a8b254 2008 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 2009 return -ENODEV;
1da177e4 2010 }
39df232f 2011
1da177e4 2012 if (odev->type != ARPHRD_ETHER) {
25a8b254 2013 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2014 err = -EINVAL;
2015 } else if (!netif_running(odev)) {
25a8b254 2016 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 2017 err = -ENETDOWN;
2018 } else {
2019 pkt_dev->odev = odev;
2020 return 0;
1da177e4 2021 }
1da177e4 2022
1da177e4 2023 dev_put(odev);
39df232f 2024 return err;
1da177e4
LT		 2025}
2026
2027/* Read pkt_dev from the interface and set up internal pktgen_dev
2028 * structure to have the right information to create/send packets
2029 */
2030static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2031{
222f1806 2032 if (!pkt_dev->odev) {
25a8b254
DM		 2033 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
2034 "setup_inject.\n");
222f1806
LC		 2035 sprintf(pkt_dev->result,
2036 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2037 return;
2038 }
2039
2040 /* Default to the interface's mac if not explicitly set. */
1da177e4 2041
f404e9a6 2042 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2043 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2044
222f1806 2045 /* Set up Dest MAC */
f404e9a6 2046 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2047
222f1806
LC		 2048 /* Set up pkt size */
2049 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2050
2051 if (pkt_dev->flags & F_IPV6) {
1da177e4 2052 /*
4ec93edb 2053 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2054 * gets exported
2055 */
2056
2057#ifdef NOTNOW
222f1806 2058 int i, set = 0, err = 1;
1da177e4
LT		 2059 struct inet6_dev *idev;
2060
222f1806
LC		 2061 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2062 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2063 set = 1;
2064 break;
2065 }
2066
222f1806
LC		 2067 if (!set) {
2068
1da177e4
LT		 2069 /*
2070 * Use linklevel address if unconfigured.
2071 *
2072 * use ipv6_get_lladdr if/when it's get exported
2073 */
2074
8814c4b5 2075 rcu_read_lock();
1da177e4
LT		 2076 if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
2077 struct inet6_ifaddr *ifp;
2078
2079 read_lock_bh(&idev->lock);
222f1806
LC		 2080 for (ifp = idev->addr_list; ifp;
2081 ifp = ifp->if_next) {
2082 if (ifp->scope == IFA_LINK
2083 && !(ifp->
2084 flags & IFA_F_TENTATIVE)) {
2085 ipv6_addr_copy(&pkt_dev->
2086 cur_in6_saddr,
2087 &ifp->addr);
1da177e4
LT		 2088 err = 0;
2089 break;
2090 }
2091 }
2092 read_unlock_bh(&idev->lock);
2093 }
8814c4b5 2094 rcu_read_unlock();
222f1806 2095 if (err)
25a8b254
DM		 2096 printk(KERN_ERR "pktgen: ERROR: IPv6 link "
2097 "address not availble.\n");
1da177e4
LT		 2098 }
2099#endif
222f1806 2100 } else {
1da177e4
LT		 2101 pkt_dev->saddr_min = 0;
2102 pkt_dev->saddr_max = 0;
2103 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2104
2105 struct in_device *in_dev;
1da177e4
LT		 2106
2107 rcu_read_lock();
e5ed6399 2108 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2109 if (in_dev) {
2110 if (in_dev->ifa_list) {
222f1806
LC		 2111 pkt_dev->saddr_min =
2112 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2113 pkt_dev->saddr_max = pkt_dev->saddr_min;
2114 }
1da177e4
LT		 2115 }
2116 rcu_read_unlock();
222f1806 2117 } else {
1da177e4
LT		 2118 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2119 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2120 }
2121
2122 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2123 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2124 }
222f1806
LC		 2125 /* Initialize current values. */
2126 pkt_dev->cur_dst_mac_offset = 0;
2127 pkt_dev->cur_src_mac_offset = 0;
2128 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2129 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2130 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2131 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2132 pkt_dev->nflows = 0;
2133}
2134
2135static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us)
2136{
2137 __u64 start;
2138 __u64 now;
2139
2140 start = now = getCurUs();
2141 printk(KERN_INFO "sleeping for %d\n", (int)(spin_until_us - now));
2142 while (now < spin_until_us) {
b4099fab 2143 /* TODO: optimize sleeping behavior */
222f1806 2144 if (spin_until_us - now > jiffies_to_usecs(1) + 1)
121caf57
NA		 2145 schedule_timeout_interruptible(1);
2146 else if (spin_until_us - now > 100) {
1da177e4
LT		 2147 if (!pkt_dev->running)
2148 return;
2149 if (need_resched())
2150 schedule();
2151 }
2152
2153 now = getCurUs();
2154 }
2155
2156 pkt_dev->idle_acc += now - start;
2157}
2158
16dab72f
JHS		 2159static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2160{
a553e4a6 2161 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2162 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2163 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2164 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2165}
2166
007a531b
JHS		 2167static inline int f_seen(struct pktgen_dev *pkt_dev, int flow)
2168{
2169
2170 if (pkt_dev->flows[flow].flags & F_INIT)
2171 return 1;
2172 else
2173 return 0;
2174}
2175
2176static inline int f_pick(struct pktgen_dev *pkt_dev)
2177{
2178 int flow = pkt_dev->curfl;
2179
2180 if (pkt_dev->flags & F_FLOW_SEQ) {
2181 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2182 /* reset time */
2183 pkt_dev->flows[flow].count = 0;
2184 pkt_dev->curfl += 1;
2185 if (pkt_dev->curfl >= pkt_dev->cflows)
2186 pkt_dev->curfl = 0; /*reset */
2187 }
2188 } else {
2189 flow = random32() % pkt_dev->cflows;
2190
2191 if (pkt_dev->flows[flow].count > pkt_dev->lflow)
2192 pkt_dev->flows[flow].count = 0;
2193 }
2194
2195 return pkt_dev->curfl;
2196}
2197
a553e4a6
JHS		 2198
2199#ifdef CONFIG_XFRM
2200/* If there was already an IPSEC SA, we keep it as is, else
2201 * we go look for it ...
2202*/
fea1ab0f 2203static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2204{
2205 struct xfrm_state *x = pkt_dev->flows[flow].x;
2206 if (!x) {
2207 /*slow path: we dont already have xfrm_state*/
2208 x = xfrm_stateonly_find((xfrm_address_t *)&pkt_dev->cur_daddr,
2209 (xfrm_address_t *)&pkt_dev->cur_saddr,
2210 AF_INET,
2211 pkt_dev->ipsmode,
2212 pkt_dev->ipsproto, 0);
2213 if (x) {
2214 pkt_dev->flows[flow].x = x;
2215 set_pkt_overhead(pkt_dev);
2216 pkt_dev->pkt_overhead+=x->props.header_len;
2217 }
2218
2219 }
2220}
2221#endif
1da177e4
LT		 2222/* Increment/randomize headers according to flags and current values
2223 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2224 */
222f1806
LC		 2225static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2226{
2227 __u32 imn;
2228 __u32 imx;
2229 int flow = 0;
1da177e4 2230
007a531b
JHS		 2231 if (pkt_dev->cflows)
2232 flow = f_pick(pkt_dev);
1da177e4
LT		 2233
2234 /* Deal with source MAC */
222f1806
LC		 2235 if (pkt_dev->src_mac_count > 1) {
2236 __u32 mc;
2237 __u32 tmp;
2238
2239 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2240 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2241 else {
2242 mc = pkt_dev->cur_src_mac_offset++;
2243 if (pkt_dev->cur_src_mac_offset >
2244 pkt_dev->src_mac_count)
2245 pkt_dev->cur_src_mac_offset = 0;
2246 }
2247
2248 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2249 pkt_dev->hh[11] = tmp;
2250 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2251 pkt_dev->hh[10] = tmp;
2252 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2253 pkt_dev->hh[9] = tmp;
2254 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2255 pkt_dev->hh[8] = tmp;
2256 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2257 pkt_dev->hh[7] = tmp;
2258 }
2259
2260 /* Deal with Destination MAC */
2261 if (pkt_dev->dst_mac_count > 1) {
2262 __u32 mc;
2263 __u32 tmp;
2264
2265 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2266 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2267
2268 else {
2269 mc = pkt_dev->cur_dst_mac_offset++;
2270 if (pkt_dev->cur_dst_mac_offset >
2271 pkt_dev->dst_mac_count) {
2272 pkt_dev->cur_dst_mac_offset = 0;
2273 }
2274 }
2275
2276 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2277 pkt_dev->hh[5] = tmp;
2278 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2279 pkt_dev->hh[4] = tmp;
2280 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2281 pkt_dev->hh[3] = tmp;
2282 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2283 pkt_dev->hh[2] = tmp;
2284 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2285 pkt_dev->hh[1] = tmp;
2286 }
2287
ca6549af
SW		 2288 if (pkt_dev->flags & F_MPLS_RND) {
2289 unsigned i;
e71a4783 2290 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2291 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2292 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2293 ((__force __be32)random32() &
ca6549af
SW		 2294 htonl(0x000fffff));
2295 }
2296
34954ddc 2297 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2298 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2299 }
2300
2301 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2302 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2303 }
2304
222f1806
LC		 2305 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2306 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2307 pkt_dev->cur_udp_src = random32() %
2308 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2309 + pkt_dev->udp_src_min;
222f1806
LC		 2310
2311 else {
1da177e4
LT		 2312 pkt_dev->cur_udp_src++;
2313 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2314 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2315 }
2316 }
2317
2318 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2319 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2320 pkt_dev->cur_udp_dst = random32() %
2321 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2322 + pkt_dev->udp_dst_min;
222f1806 2323 } else {
1da177e4 2324 pkt_dev->cur_udp_dst++;
222f1806 2325 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2326 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2327 }
2328 }
1da177e4
LT		 2329
2330 if (!(pkt_dev->flags & F_IPV6)) {
2331
222f1806
LC		 2332 if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
2333 ntohl(pkt_dev->
2334 saddr_max))) {
1da177e4 2335 __u32 t;
222f1806 2336 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2337 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2338 else {
2339 t = ntohl(pkt_dev->cur_saddr);
2340 t++;
2341 if (t > imx) {
2342 t = imn;
2343 }
2344 }
2345 pkt_dev->cur_saddr = htonl(t);
2346 }
222f1806 2347
007a531b 2348 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2349 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2350 } else {
252e3346
AV		 2351 imn = ntohl(pkt_dev->daddr_min);
2352 imx = ntohl(pkt_dev->daddr_max);
2353 if (imn < imx) {
1da177e4 2354 __u32 t;
252e3346 2355 __be32 s;
1da177e4
LT		 2356 if (pkt_dev->flags & F_IPDST_RND) {
2357
5fa6fc76 2358 t = random32() % (imx - imn) + imn;
252e3346 2359 s = htonl(t);
1da177e4 2360
252e3346
AV		 2361 while (LOOPBACK(s) || MULTICAST(s)
2362 || BADCLASS(s) || ZERONET(s)
2363 || LOCAL_MCAST(s)) {
5fa6fc76 2364 t = random32() % (imx - imn) + imn;
252e3346 2365 s = htonl(t);
1da177e4 2366 }
252e3346
AV		 2367 pkt_dev->cur_daddr = s;
2368 } else {
1da177e4
LT		 2369 t = ntohl(pkt_dev->cur_daddr);
2370 t++;
2371 if (t > imx) {
2372 t = imn;
2373 }
2374 pkt_dev->cur_daddr = htonl(t);
2375 }
2376 }
222f1806 2377 if (pkt_dev->cflows) {
007a531b 2378 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2379 pkt_dev->flows[flow].cur_daddr =
2380 pkt_dev->cur_daddr;
a553e4a6
JHS		 2381#ifdef CONFIG_XFRM
2382 if (pkt_dev->flags & F_IPSEC_ON)
2383 get_ipsec_sa(pkt_dev, flow);
2384#endif
1da177e4
LT		 2385 pkt_dev->nflows++;
2386 }
2387 }
222f1806
LC		 2388 } else { /* IPV6 * */
2389
2390 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2391 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2392 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2393 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2394 else {
2395 int i;
2396
2397 /* Only random destinations yet */
2398
222f1806 2399 for (i = 0; i < 4; i++) {
1da177e4 2400 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2401 (((__force __be32)random32() |
222f1806
LC		 2402 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2403 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2404 }
222f1806 2405 }
1da177e4
LT		 2406 }
2407
222f1806
LC		 2408 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2409 __u32 t;
2410 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2411 t = random32() %
2412 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2413 + pkt_dev->min_pkt_size;
222f1806 2414 } else {
1da177e4 2415 t = pkt_dev->cur_pkt_size + 1;
222f1806 2416 if (t > pkt_dev->max_pkt_size)
1da177e4 2417 t = pkt_dev->min_pkt_size;
222f1806
LC		 2418 }
2419 pkt_dev->cur_pkt_size = t;
2420 }
1da177e4 2421
45b270f8
RO		 2422 if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
2423 __u16 t;
2424 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2425 t = random32() %
2426 (pkt_dev->queue_map_max - pkt_dev->queue_map_min + 1)
2427 + pkt_dev->queue_map_min;
2428 } else {
2429 t = pkt_dev->cur_queue_map + 1;
2430 if (t > pkt_dev->queue_map_max)
2431 t = pkt_dev->queue_map_min;
2432 }
2433 pkt_dev->cur_queue_map = t;
2434 }
2435
1da177e4
LT		 2436 pkt_dev->flows[flow].count++;
2437}
2438
a553e4a6
JHS		 2439
2440#ifdef CONFIG_XFRM
2441static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2442{
2443 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2444 int err = 0;
2445 struct iphdr *iph;
2446
2447 if (!x)
2448 return 0;
2449 /* XXX: we dont support tunnel mode for now until
2450 * we resolve the dst issue */
2451 if (x->props.mode != XFRM_MODE_TRANSPORT)
2452 return 0;
2453
2454 spin_lock(&x->lock);
2455 iph = ip_hdr(skb);
2456
13996378 2457 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2458 if (err)
2459 goto error;
2460 err = x->type->output(x, skb);
2461 if (err)
2462 goto error;
2463
2464 x->curlft.bytes +=skb->len;
2465 x->curlft.packets++;
a553e4a6
JHS		 2466error:
2467 spin_unlock(&x->lock);
2468 return err;
2469}
2470
2471static inline void free_SAs(struct pktgen_dev *pkt_dev)
2472{
2473 if (pkt_dev->cflows) {
2474 /* let go of the SAs if we have them */
2475 int i = 0;
2476 for (; i < pkt_dev->nflows; i++){
2477 struct xfrm_state *x = pkt_dev->flows[i].x;
2478 if (x) {
2479 xfrm_state_put(x);
2480 pkt_dev->flows[i].x = NULL;
2481 }
2482 }
2483 }
2484}
2485
2486static inline int process_ipsec(struct pktgen_dev *pkt_dev,
2487 struct sk_buff *skb, __be16 protocol)
2488{
2489 if (pkt_dev->flags & F_IPSEC_ON) {
2490 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2491 int nhead = 0;
2492 if (x) {
2493 int ret;
2494 __u8 *eth;
2495 nhead = x->props.header_len - skb_headroom(skb);
2496 if (nhead >0) {
2497 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2498 if (ret < 0) {
25a8b254
DM		 2499 printk(KERN_ERR "Error expanding "
2500 "ipsec packet %d\n",ret);
a553e4a6
JHS		 2501 return 0;
2502 }
2503 }
2504
2505 /* ipsec is not expecting ll header */
2506 skb_pull(skb, ETH_HLEN);
2507 ret = pktgen_output_ipsec(skb, pkt_dev);
2508 if (ret) {
25a8b254
DM		 2509 printk(KERN_ERR "Error creating ipsec "
2510 "packet %d\n",ret);
a553e4a6
JHS		 2511 kfree_skb(skb);
2512 return 0;
2513 }
2514 /* restore ll */
2515 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2516 memcpy(eth, pkt_dev->hh, 12);
2517 *(u16 *) & eth[12] = protocol;
2518 }
2519 }
2520 return 1;
2521}
2522#endif
2523
ca6549af
SW		 2524static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2525{
2526 unsigned i;
e71a4783 2527 for (i = 0; i < pkt_dev->nr_labels; i++) {
ca6549af
SW		 2528 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
2529 }
2530 mpls--;
2531 *mpls |= MPLS_STACK_BOTTOM;
2532}
2533
0f37c605
AV		 2534static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2535 unsigned int prio)
2536{
2537 return htons(id | (cfi << 12) | (prio << 13));
2538}
2539
222f1806
LC		 2540static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2541 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2542{
2543 struct sk_buff *skb = NULL;
2544 __u8 *eth;
2545 struct udphdr *udph;
2546 int datalen, iplen;
2547 struct iphdr *iph;
222f1806 2548 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2549 __be16 protocol = htons(ETH_P_IP);
ca6549af 2550 __be32 *mpls;
34954ddc
FF		 2551 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2552 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2553 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2554 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
2555
ca6549af
SW		 2556
2557 if (pkt_dev->nr_labels)
d5f1ce9a 2558 protocol = htons(ETH_P_MPLS_UC);
222f1806 2559
34954ddc 2560 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2561 protocol = htons(ETH_P_8021Q);
34954ddc 2562
64053bee
RO		 2563 /* Update any of the values, used when we're incrementing various
2564 * fields.
2565 */
2566 mod_cur_headers(pkt_dev);
2567
7ac5459e 2568 datalen = (odev->hard_header_len + 16) & ~0xf;
ca6549af 2569 skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen +
16dab72f 2570 pkt_dev->pkt_overhead, GFP_ATOMIC);
1da177e4
LT		 2571 if (!skb) {
2572 sprintf(pkt_dev->result, "No memory");
2573 return NULL;
2574 }
2575
7ac5459e 2576 skb_reserve(skb, datalen);
1da177e4
LT		 2577
2578 /* Reserve for ethernet and IP header */
2579 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2580 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2581 if (pkt_dev->nr_labels)
2582 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2583
2584 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2585 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2586 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2587 *svlan_tci = build_tci(pkt_dev->svlan_id,
2588 pkt_dev->svlan_cfi,
2589 pkt_dev->svlan_p);
34954ddc 2590 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2591 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2592 }
2593 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2594 *vlan_tci = build_tci(pkt_dev->vlan_id,
2595 pkt_dev->vlan_cfi,
2596 pkt_dev->vlan_p);
34954ddc 2597 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2598 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2599 }
2600
27a884dc 2601 skb->network_header = skb->tail;
b0e380b1 2602 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2603 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
dfa40911 2604 skb_set_queue_mapping(skb, pkt_dev->cur_queue_map);
ddc7b8e3
ACM		 2605 iph = ip_hdr(skb);
2606 udph = udp_hdr(skb);
1da177e4 2607
1da177e4 2608 memcpy(eth, pkt_dev->hh, 12);
252e3346 2609 *(__be16 *) & eth[12] = protocol;
1da177e4 2610
ca6549af
SW		 2611 /* Eth + IPh + UDPh + mpls */
2612 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2613 pkt_dev->pkt_overhead;
222f1806 2614 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2615 datalen = sizeof(struct pktgen_hdr);
222f1806 2616
1da177e4
LT		 2617 udph->source = htons(pkt_dev->cur_udp_src);
2618 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2619 udph->len = htons(datalen + 8); /* DATA + udphdr */
2620 udph->check = 0; /* No checksum */
1da177e4
LT		 2621
2622 iph->ihl = 5;
2623 iph->version = 4;
2624 iph->ttl = 32;
1ca7768c 2625 iph->tos = pkt_dev->tos;
222f1806 2626 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2627 iph->saddr = pkt_dev->cur_saddr;
2628 iph->daddr = pkt_dev->cur_daddr;
2629 iph->frag_off = 0;
2630 iplen = 20 + 8 + datalen;
2631 iph->tot_len = htons(iplen);
2632 iph->check = 0;
222f1806 2633 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2634 skb->protocol = protocol;
b0e380b1 2635 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2636 pkt_dev->pkt_overhead);
1da177e4
LT		 2637 skb->dev = odev;
2638 skb->pkt_type = PACKET_HOST;
2639
222f1806
LC		 2640 if (pkt_dev->nfrags <= 0)
2641 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2642 else {
2643 int frags = pkt_dev->nfrags;
2644 int i;
2645
222f1806
LC		 2646 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2647
1da177e4
LT		 2648 if (frags > MAX_SKB_FRAGS)
2649 frags = MAX_SKB_FRAGS;
222f1806
LC		 2650 if (datalen > frags * PAGE_SIZE) {
2651 skb_put(skb, datalen - frags * PAGE_SIZE);
2652 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2653 }
2654
2655 i = 0;
2656 while (datalen > 0) {
2657 struct page *page = alloc_pages(GFP_KERNEL, 0);
2658 skb_shinfo(skb)->frags[i].page = page;
2659 skb_shinfo(skb)->frags[i].page_offset = 0;
2660 skb_shinfo(skb)->frags[i].size =
222f1806 2661 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2662 datalen -= skb_shinfo(skb)->frags[i].size;
2663 skb->len += skb_shinfo(skb)->frags[i].size;
2664 skb->data_len += skb_shinfo(skb)->frags[i].size;
2665 i++;
2666 skb_shinfo(skb)->nr_frags = i;
2667 }
2668
2669 while (i < frags) {
2670 int rem;
2671
2672 if (i == 0)
2673 break;
2674
2675 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2676 if (rem == 0)
2677 break;
2678
2679 skb_shinfo(skb)->frags[i - 1].size -= rem;
2680
222f1806
LC		 2681 skb_shinfo(skb)->frags[i] =
2682 skb_shinfo(skb)->frags[i - 1];
1da177e4 2683 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2684 skb_shinfo(skb)->frags[i].page =
2685 skb_shinfo(skb)->frags[i - 1].page;
2686 skb_shinfo(skb)->frags[i].page_offset +=
2687 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2688 skb_shinfo(skb)->frags[i].size = rem;
2689 i++;
2690 skb_shinfo(skb)->nr_frags = i;
2691 }
2692 }
2693
222f1806
LC		 2694 /* Stamp the time, and sequence number, convert them to network byte order */
2695
2696 if (pgh) {
2697 struct timeval timestamp;
2698
2699 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2700 pgh->seq_num = htonl(pkt_dev->seq_num);
2701
2702 do_gettimeofday(&timestamp);
2703 pgh->tv_sec = htonl(timestamp.tv_sec);
2704 pgh->tv_usec = htonl(timestamp.tv_usec);
2705 }
1da177e4 2706
a553e4a6
JHS		 2707#ifdef CONFIG_XFRM
2708 if (!process_ipsec(pkt_dev, skb, protocol))
2709 return NULL;
2710#endif
2711
1da177e4
LT		 2712 return skb;
2713}
2714
2715/*
4ec93edb 2716 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2717 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2718 *
4ec93edb 2719 * Slightly modified for kernel.
1da177e4
LT		 2720 * Should be candidate for net/ipv4/utils.c
2721 * --ro
2722 */
2723
222f1806 2724static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2725{
2726 unsigned int i;
222f1806 2727 unsigned int len = 0;
1da177e4
LT		 2728 unsigned long u;
2729 char suffix[16];
222f1806
LC		 2730 unsigned int prefixlen = 0;
2731 unsigned int suffixlen = 0;
252e3346 2732 __be32 tmp;
cfcabdcc 2733 char *pos;
1da177e4 2734
222f1806
LC		 2735 for (i = 0; i < 16; i++)
2736 ip[i] = 0;
1da177e4
LT		 2737
2738 for (;;) {
2739 if (*s == ':') {
2740 len++;
222f1806
LC		 2741 if (s[1] == ':') { /* Found "::", skip to part 2 */
2742 s += 2;
1da177e4
LT		 2743 len++;
2744 break;
2745 }
2746 s++;
2747 }
1da177e4 2748
cfcabdcc
SH		 2749 u = simple_strtoul(s, &pos, 16);
2750 i = pos - s;
222f1806
LC		 2751 if (!i)
2752 return 0;
2753 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2754
2755 /* the last 4 bytes may be written as IPv4 address */
2756
2757 tmp = in_aton(s);
222f1806
LC		 2758 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2759 return i + len;
1da177e4
LT		 2760 }
2761 ip[prefixlen++] = (u >> 8);
2762 ip[prefixlen++] = (u & 255);
222f1806
LC		 2763 s += i;
2764 len += i;
2765 if (prefixlen == 16)
1da177e4
LT		 2766 return len;
2767 }
2768
2769/* part 2, after "::" */
2770 for (;;) {
2771 if (*s == ':') {
222f1806 2772 if (suffixlen == 0)
1da177e4
LT		 2773 break;
2774 s++;
2775 len++;
222f1806 2776 } else if (suffixlen != 0)
1da177e4 2777 break;
cfcabdcc
SH		 2778
2779 u = simple_strtol(s, &pos, 16);
2780 i = pos - s;
1da177e4 2781 if (!i) {
222f1806
LC		 2782 if (*s)
2783 len--;
1da177e4
LT		 2784 break;
2785 }
222f1806 2786 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2787 tmp = in_aton(s);
222f1806
LC		 2788 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2789 sizeof(tmp));
2790 suffixlen += 4;
2791 len += strlen(s);
1da177e4
LT		 2792 break;
2793 }
2794 suffix[suffixlen++] = (u >> 8);
2795 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2796 s += i;
2797 len += i;
2798 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2799 break;
2800 }
222f1806
LC		 2801 for (i = 0; i < suffixlen; i++)
2802 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2803 return len;
2804}
2805
222f1806
LC		 2806static char tohex(char hexdigit)
2807{
2808 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2809}
2810
222f1806
LC		 2811static int fmt_xlong(char *s, unsigned int i)
2812{
2813 char *bak = s;
2814 *s = tohex((i >> 12) & 0xf);
2815 if (s != bak || *s != '0')
2816 ++s;
2817 *s = tohex((i >> 8) & 0xf);
2818 if (s != bak || *s != '0')
2819 ++s;
2820 *s = tohex((i >> 4) & 0xf);
2821 if (s != bak || *s != '0')
2822 ++s;
2823 *s = tohex(i & 0xf);
2824 return s - bak + 1;
1da177e4
LT		 2825}
2826
222f1806
LC		 2827static unsigned int fmt_ip6(char *s, const char ip[16])
2828{
1da177e4
LT		 2829 unsigned int len;
2830 unsigned int i;
2831 unsigned int temp;
2832 unsigned int compressing;
2833 int j;
2834
222f1806
LC		 2835 len = 0;
2836 compressing = 0;
2837 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2838
2839#ifdef V4MAPPEDPREFIX
222f1806
LC		 2840 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2841 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2842 temp = strlen(s);
2843 return len + temp;
1da177e4
LT		 2844 }
2845#endif
222f1806
LC		 2846 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2847 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2848 if (temp == 0) {
2849 if (!compressing) {
222f1806
LC		 2850 compressing = 1;
2851 if (j == 0) {
2852 *s++ = ':';
2853 ++len;
1da177e4
LT		 2854 }
2855 }
2856 } else {
2857 if (compressing) {
222f1806
LC		 2858 compressing = 0;
2859 *s++ = ':';
2860 ++len;
1da177e4 2861 }
222f1806
LC		 2862 i = fmt_xlong(s, temp);
2863 len += i;
2864 s += i;
2865 if (j < 14) {
1da177e4
LT		 2866 *s++ = ':';
2867 ++len;
2868 }
2869 }
2870 }
2871 if (compressing) {
222f1806
LC		 2872 *s++ = ':';
2873 ++len;
1da177e4 2874 }
222f1806 2875 *s = 0;
1da177e4
LT		 2876 return len;
2877}
2878
222f1806
LC		 2879static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2880 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2881{
2882 struct sk_buff *skb = NULL;
2883 __u8 *eth;
2884 struct udphdr *udph;
2885 int datalen;
2886 struct ipv6hdr *iph;
222f1806 2887 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2888 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2889 __be32 *mpls;
34954ddc
FF		 2890 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2891 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2892 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2893 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
ca6549af
SW		 2894
2895 if (pkt_dev->nr_labels)
d5f1ce9a 2896 protocol = htons(ETH_P_MPLS_UC);
64053bee 2897
34954ddc 2898 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2899 protocol = htons(ETH_P_8021Q);
34954ddc 2900
64053bee
RO		 2901 /* Update any of the values, used when we're incrementing various
2902 * fields.
2903 */
2904 mod_cur_headers(pkt_dev);
2905
ca6549af 2906 skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 +
16dab72f 2907 pkt_dev->pkt_overhead, GFP_ATOMIC);
1da177e4
LT		 2908 if (!skb) {
2909 sprintf(pkt_dev->result, "No memory");
2910 return NULL;
2911 }
2912
2913 skb_reserve(skb, 16);
2914
2915 /* Reserve for ethernet and IP header */
2916 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2917 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2918 if (pkt_dev->nr_labels)
2919 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2920
2921 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2922 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2923 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2924 *svlan_tci = build_tci(pkt_dev->svlan_id,
2925 pkt_dev->svlan_cfi,
2926 pkt_dev->svlan_p);
34954ddc 2927 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2928 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2929 }
2930 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2931 *vlan_tci = build_tci(pkt_dev->vlan_id,
2932 pkt_dev->vlan_cfi,
2933 pkt_dev->vlan_p);
34954ddc 2934 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2935 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2936 }
2937
27a884dc 2938 skb->network_header = skb->tail;
b0e380b1 2939 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2940 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
dfa40911 2941 skb_set_queue_mapping(skb, pkt_dev->cur_queue_map);
ddc7b8e3
ACM		 2942 iph = ipv6_hdr(skb);
2943 udph = udp_hdr(skb);
1da177e4 2944
1da177e4 2945 memcpy(eth, pkt_dev->hh, 12);
252e3346 2946 *(__be16 *) & eth[12] = protocol;
64053bee 2947
ca6549af
SW		 2948 /* Eth + IPh + UDPh + mpls */
2949 datalen = pkt_dev->cur_pkt_size - 14 -
2950 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2951 pkt_dev->pkt_overhead;
1da177e4 2952
222f1806 2953 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2954 datalen = sizeof(struct pktgen_hdr);
2955 if (net_ratelimit())
222f1806
LC		 2956 printk(KERN_INFO "pktgen: increased datalen to %d\n",
2957 datalen);
1da177e4
LT		 2958 }
2959
2960 udph->source = htons(pkt_dev->cur_udp_src);
2961 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2962 udph->len = htons(datalen + sizeof(struct udphdr));
2963 udph->check = 0; /* No checksum */
1da177e4 2964
d5f1ce9a 2965 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2966
1ca7768c
FF		 2967 if (pkt_dev->traffic_class) {
2968 /* Version + traffic class + flow (0) */
252e3346 2969 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2970 }
2971
1da177e4
LT		 2972 iph->hop_limit = 32;
2973
2974 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2975 iph->nexthdr = IPPROTO_UDP;
2976
2977 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2978 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2979
b0e380b1 2980 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2981 pkt_dev->pkt_overhead);
ca6549af 2982 skb->protocol = protocol;
1da177e4
LT		 2983 skb->dev = odev;
2984 skb->pkt_type = PACKET_HOST;
2985
222f1806
LC		 2986 if (pkt_dev->nfrags <= 0)
2987 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2988 else {
2989 int frags = pkt_dev->nfrags;
2990 int i;
2991
222f1806
LC		 2992 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2993
1da177e4
LT		 2994 if (frags > MAX_SKB_FRAGS)
2995 frags = MAX_SKB_FRAGS;
222f1806
LC		 2996 if (datalen > frags * PAGE_SIZE) {
2997 skb_put(skb, datalen - frags * PAGE_SIZE);
2998 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2999 }
3000
3001 i = 0;
3002 while (datalen > 0) {
3003 struct page *page = alloc_pages(GFP_KERNEL, 0);
3004 skb_shinfo(skb)->frags[i].page = page;
3005 skb_shinfo(skb)->frags[i].page_offset = 0;
3006 skb_shinfo(skb)->frags[i].size =
222f1806 3007 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 3008 datalen -= skb_shinfo(skb)->frags[i].size;
3009 skb->len += skb_shinfo(skb)->frags[i].size;
3010 skb->data_len += skb_shinfo(skb)->frags[i].size;
3011 i++;
3012 skb_shinfo(skb)->nr_frags = i;
3013 }
3014
3015 while (i < frags) {
3016 int rem;
3017
3018 if (i == 0)
3019 break;
3020
3021 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
3022 if (rem == 0)
3023 break;
3024
3025 skb_shinfo(skb)->frags[i - 1].size -= rem;
3026
222f1806
LC		 3027 skb_shinfo(skb)->frags[i] =
3028 skb_shinfo(skb)->frags[i - 1];
1da177e4 3029 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3030 skb_shinfo(skb)->frags[i].page =
3031 skb_shinfo(skb)->frags[i - 1].page;
3032 skb_shinfo(skb)->frags[i].page_offset +=
3033 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3034 skb_shinfo(skb)->frags[i].size = rem;
3035 i++;
3036 skb_shinfo(skb)->nr_frags = i;
3037 }
3038 }
3039
222f1806 3040 /* Stamp the time, and sequence number, convert them to network byte order */
1da177e4 3041 /* should we update cloned packets too ? */
222f1806
LC		 3042 if (pgh) {
3043 struct timeval timestamp;
3044
3045 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3046 pgh->seq_num = htonl(pkt_dev->seq_num);
3047
3048 do_gettimeofday(&timestamp);
3049 pgh->tv_sec = htonl(timestamp.tv_sec);
3050 pgh->tv_usec = htonl(timestamp.tv_usec);
3051 }
34954ddc 3052 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3053
1da177e4
LT		 3054 return skb;
3055}
3056
222f1806
LC		 3057static inline struct sk_buff *fill_packet(struct net_device *odev,
3058 struct pktgen_dev *pkt_dev)
1da177e4 3059{
222f1806 3060 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3061 return fill_packet_ipv6(odev, pkt_dev);
3062 else
3063 return fill_packet_ipv4(odev, pkt_dev);
3064}
3065
222f1806 3066static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3067{
222f1806
LC		 3068 pkt_dev->seq_num = 1;
3069 pkt_dev->idle_acc = 0;
1da177e4 3070 pkt_dev->sofar = 0;
222f1806
LC		 3071 pkt_dev->tx_bytes = 0;
3072 pkt_dev->errors = 0;
1da177e4
LT		 3073}
3074
3075/* Set up structure for sending pkts, clear counters */
3076
3077static void pktgen_run(struct pktgen_thread *t)
3078{
c26a8016 3079 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3080 int started = 0;
3081
25c4e53a 3082 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 3083
3084 if_lock(t);
c26a8016 3085 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3086
3087 /*
3088 * setup odev and create initial packet.
3089 */
3090 pktgen_setup_inject(pkt_dev);
3091
222f1806 3092 if (pkt_dev->odev) {
1da177e4 3093 pktgen_clear_counters(pkt_dev);
222f1806 3094 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4
LT		 3095 pkt_dev->skb = NULL;
3096 pkt_dev->started_at = getCurUs();
222f1806 3097 pkt_dev->next_tx_us = getCurUs(); /* Transmit immediately */
1da177e4 3098 pkt_dev->next_tx_ns = 0;
16dab72f 3099 set_pkt_overhead(pkt_dev);
222f1806 3100
1da177e4
LT		 3101 strcpy(pkt_dev->result, "Starting");
3102 started++;
222f1806 3103 } else
1da177e4
LT		 3104 strcpy(pkt_dev->result, "Error starting");
3105 }
3106 if_unlock(t);
222f1806
LC		 3107 if (started)
3108 t->control &= ~(T_STOP);
1da177e4
LT		 3109}
3110
3111static void pktgen_stop_all_threads_ifs(void)
3112{
cdcdbe0b 3113 struct pktgen_thread *t;
1da177e4 3114
25c4e53a 3115 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3116
6146e6a4 3117 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3118
3119 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3120 t->control |= T_STOP;
cdcdbe0b 3121
6146e6a4 3122 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3123}
3124
222f1806 3125static int thread_is_running(struct pktgen_thread *t)
1da177e4 3126{
c26a8016 3127 struct pktgen_dev *pkt_dev;
222f1806 3128 int res = 0;
1da177e4 3129
c26a8016
LC		 3130 list_for_each_entry(pkt_dev, &t->if_list, list)
3131 if (pkt_dev->running) {
1da177e4
LT		 3132 res = 1;
3133 break;
3134 }
222f1806 3135 return res;
1da177e4
LT		 3136}
3137
222f1806 3138static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3139{
222f1806 3140 if_lock(t);
1da177e4 3141
222f1806 3142 while (thread_is_running(t)) {
1da177e4 3143
222f1806 3144 if_unlock(t);
1da177e4 3145
222f1806 3146 msleep_interruptible(100);
1da177e4 3147
222f1806
LC		 3148 if (signal_pending(current))
3149 goto signal;
3150 if_lock(t);
3151 }
3152 if_unlock(t);
3153 return 1;
3154signal:
3155 return 0;
1da177e4
LT		 3156}
3157
3158static int pktgen_wait_all_threads_run(void)
3159{
cdcdbe0b 3160 struct pktgen_thread *t;
1da177e4 3161 int sig = 1;
222f1806 3162
6146e6a4 3163 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3164
3165 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3166 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3167 if (sig == 0)
3168 break;
1da177e4 3169 }
cdcdbe0b
LC		 3170
3171 if (sig == 0)
3172 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3173 t->control |= (T_STOP);
cdcdbe0b 3174
6146e6a4 3175 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3176 return sig;
3177}
3178
3179static void pktgen_run_all_threads(void)
3180{
cdcdbe0b 3181 struct pktgen_thread *t;
1da177e4 3182
25c4e53a 3183 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3184
6146e6a4 3185 mutex_lock(&pktgen_thread_lock);
1da177e4 3186
cdcdbe0b 3187 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3188 t->control |= (T_RUN);
cdcdbe0b 3189
6146e6a4 3190 mutex_unlock(&pktgen_thread_lock);
1da177e4 3191
222f1806
LC		 3192 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3193
1da177e4
LT		 3194 pktgen_wait_all_threads_run();
3195}
3196
1da177e4
LT		 3197static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3198{
222f1806
LC		 3199 __u64 total_us, bps, mbps, pps, idle;
3200 char *p = pkt_dev->result;
3201
3202 total_us = pkt_dev->stopped_at - pkt_dev->started_at;
3203
3204 idle = pkt_dev->idle_acc;
3205
3206 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
3207 (unsigned long long)total_us,
3208 (unsigned long long)(total_us - idle),
3209 (unsigned long long)idle,
3210 (unsigned long long)pkt_dev->sofar,
3211 pkt_dev->cur_pkt_size, nr_frags);
3212
3213 pps = pkt_dev->sofar * USEC_PER_SEC;
3214
3215 while ((total_us >> 32) != 0) {
3216 pps >>= 1;
3217 total_us >>= 1;
3218 }
3219
3220 do_div(pps, total_us);
3221
3222 bps = pps * 8 * pkt_dev->cur_pkt_size;
3223
3224 mbps = bps;
3225 do_div(mbps, 1000000);
3226 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3227 (unsigned long long)pps,
3228 (unsigned long long)mbps,
3229 (unsigned long long)bps,
3230 (unsigned long long)pkt_dev->errors);
1da177e4 3231}
1da177e4
LT		 3232
3233/* Set stopped-at timer, remove from running list, do counters & statistics */
3234
222f1806 3235static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3236{
222f1806 3237 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3238
222f1806 3239 if (!pkt_dev->running) {
25a8b254
DM		 3240 printk(KERN_WARNING "pktgen: interface: %s is already "
3241 "stopped\n", pkt_dev->odev->name);
222f1806
LC		 3242 return -EINVAL;
3243 }
1da177e4 3244
222f1806
LC		 3245 pkt_dev->stopped_at = getCurUs();
3246 pkt_dev->running = 0;
1da177e4 3247
95ed63f7 3248 show_results(pkt_dev, nr_frags);
1da177e4 3249
222f1806 3250 return 0;
1da177e4
LT		 3251}
3252
222f1806 3253static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3254{
c26a8016 3255 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3256
1da177e4
LT		 3257 if_lock(t);
3258
c26a8016
LC		 3259 list_for_each_entry(pkt_dev, &t->if_list, list) {
3260 if (!pkt_dev->running)
222f1806
LC		 3261 continue;
3262 if (best == NULL)
c26a8016
LC		 3263 best = pkt_dev;
3264 else if (pkt_dev->next_tx_us < best->next_tx_us)
3265 best = pkt_dev;
1da177e4
LT		 3266 }
3267 if_unlock(t);
222f1806 3268 return best;
1da177e4
LT		 3269}
3270
222f1806
LC		 3271static void pktgen_stop(struct pktgen_thread *t)
3272{
c26a8016 3273 struct pktgen_dev *pkt_dev;
1da177e4 3274
25c4e53a 3275 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3276
222f1806 3277 if_lock(t);
1da177e4 3278
c26a8016
LC		 3279 list_for_each_entry(pkt_dev, &t->if_list, list) {
3280 pktgen_stop_device(pkt_dev);
3281 if (pkt_dev->skb)
3282 kfree_skb(pkt_dev->skb);
95ed63f7 3283
c26a8016 3284 pkt_dev->skb = NULL;
95ed63f7 3285 }
1da177e4 3286
222f1806 3287 if_unlock(t);
1da177e4
LT		 3288}
3289
95ed63f7
AK		 3290/*
3291 * one of our devices needs to be removed - find it
3292 * and remove it
3293 */
3294static void pktgen_rem_one_if(struct pktgen_thread *t)
3295{
c26a8016
LC		 3296 struct list_head *q, *n;
3297 struct pktgen_dev *cur;
95ed63f7 3298
25c4e53a 3299 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3300
3301 if_lock(t);
3302
c26a8016
LC		 3303 list_for_each_safe(q, n, &t->if_list) {
3304 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3305
222f1806
LC		 3306 if (!cur->removal_mark)
3307 continue;
95ed63f7
AK		 3308
3309 if (cur->skb)
3310 kfree_skb(cur->skb);
3311 cur->skb = NULL;
3312
3313 pktgen_remove_device(t, cur);
3314
3315 break;
3316 }
3317
3318 if_unlock(t);
3319}
3320
222f1806 3321static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3322{
c26a8016
LC		 3323 struct list_head *q, *n;
3324 struct pktgen_dev *cur;
222f1806
LC		 3325
3326 /* Remove all devices, free mem */
95ed63f7 3327
25c4e53a 3328 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3329 if_lock(t);
1da177e4 3330
c26a8016
LC		 3331 list_for_each_safe(q, n, &t->if_list) {
3332 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7
AK		 3333
3334 if (cur->skb)
3335 kfree_skb(cur->skb);
3336 cur->skb = NULL;
3337
1da177e4
LT		 3338 pktgen_remove_device(t, cur);
3339 }
3340
222f1806 3341 if_unlock(t);
1da177e4
LT		 3342}
3343
222f1806 3344static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3345{
222f1806 3346 /* Remove from the thread list */
1da177e4 3347
ee74baa7 3348 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3349
6146e6a4 3350 mutex_lock(&pktgen_thread_lock);
1da177e4 3351
cdcdbe0b
LC		 3352 list_del(&t->th_list);
3353
6146e6a4 3354 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3355}
3356
3357static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev)
3358{
3359 struct net_device *odev = NULL;
3360 __u64 idle_start = 0;
3361 int ret;
3362
3363 odev = pkt_dev->odev;
222f1806 3364
1da177e4
LT		 3365 if (pkt_dev->delay_us || pkt_dev->delay_ns) {
3366 u64 now;
3367
3368 now = getCurUs();
3369 if (now < pkt_dev->next_tx_us)
3370 spin(pkt_dev, pkt_dev->next_tx_us);
3371
3372 /* This is max DELAY, this has special meaning of
3373 * "never transmit"
3374 */
3375 if (pkt_dev->delay_us == 0x7FFFFFFF) {
3376 pkt_dev->next_tx_us = getCurUs() + pkt_dev->delay_us;
3377 pkt_dev->next_tx_ns = pkt_dev->delay_ns;
3378 goto out;
3379 }
3380 }
222f1806 3381
f25f4e44 3382 if ((netif_queue_stopped(odev) ||
378be2c0 3383 (pkt_dev->skb &&
668f895a 3384 netif_subqueue_stopped(odev, pkt_dev->skb))) ||
378be2c0 3385 need_resched()) {
1da177e4 3386 idle_start = getCurUs();
222f1806 3387
1da177e4
LT		 3388 if (!netif_running(odev)) {
3389 pktgen_stop_device(pkt_dev);
95ed63f7
AK		 3390 if (pkt_dev->skb)
3391 kfree_skb(pkt_dev->skb);
3392 pkt_dev->skb = NULL;
1da177e4
LT		 3393 goto out;
3394 }
222f1806 3395 if (need_resched())
1da177e4 3396 schedule();
222f1806 3397
1da177e4 3398 pkt_dev->idle_acc += getCurUs() - idle_start;
222f1806 3399
f25f4e44 3400 if (netif_queue_stopped(odev) ||
668f895a 3401 netif_subqueue_stopped(odev, pkt_dev->skb)) {
222f1806 3402 pkt_dev->next_tx_us = getCurUs(); /* TODO */
1da177e4 3403 pkt_dev->next_tx_ns = 0;
222f1806 3404 goto out; /* Try the next interface */
1da177e4
LT		 3405 }
3406 }
222f1806 3407
1da177e4 3408 if (pkt_dev->last_ok || !pkt_dev->skb) {
222f1806
LC		 3409 if ((++pkt_dev->clone_count >= pkt_dev->clone_skb)
3410 || (!pkt_dev->skb)) {
1da177e4 3411 /* build a new pkt */
222f1806 3412 if (pkt_dev->skb)
1da177e4 3413 kfree_skb(pkt_dev->skb);
222f1806 3414
1da177e4
LT		 3415 pkt_dev->skb = fill_packet(odev, pkt_dev);
3416 if (pkt_dev->skb == NULL) {
25a8b254
DM		 3417 printk(KERN_ERR "pktgen: ERROR: couldn't "
3418 "allocate skb in fill_packet.\n");
1da177e4 3419 schedule();
222f1806 3420 pkt_dev->clone_count--; /* back out increment, OOM */
1da177e4
LT		 3421 goto out;
3422 }
3423 pkt_dev->allocated_skbs++;
222f1806 3424 pkt_dev->clone_count = 0; /* reset counter */
1da177e4
LT		 3425 }
3426 }
95ed63f7 3427
932ff279 3428 netif_tx_lock_bh(odev);
f25f4e44 3429 if (!netif_queue_stopped(odev) &&
668f895a 3430 !netif_subqueue_stopped(odev, pkt_dev->skb)) {
1da177e4
LT		 3431
3432 atomic_inc(&(pkt_dev->skb->users));
222f1806 3433 retry_now:
1da177e4
LT		 3434 ret = odev->hard_start_xmit(pkt_dev->skb, odev);
3435 if (likely(ret == NETDEV_TX_OK)) {
222f1806 3436 pkt_dev->last_ok = 1;
1da177e4
LT		 3437 pkt_dev->sofar++;
3438 pkt_dev->seq_num++;
3439 pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
222f1806
LC		 3440
3441 } else if (ret == NETDEV_TX_LOCKED
1da177e4
LT		 3442 && (odev->features & NETIF_F_LLTX)) {
3443 cpu_relax();
3444 goto retry_now;
222f1806
LC		 3445 } else { /* Retry it next time */
3446
1da177e4 3447 atomic_dec(&(pkt_dev->skb->users));
222f1806 3448
1da177e4
LT		 3449 if (debug && net_ratelimit())
3450 printk(KERN_INFO "pktgen: Hard xmit error\n");
222f1806 3451
1da177e4
LT		 3452 pkt_dev->errors++;
3453 pkt_dev->last_ok = 0;
3454 }
3455
3456 pkt_dev->next_tx_us = getCurUs();
3457 pkt_dev->next_tx_ns = 0;
3458
3459 pkt_dev->next_tx_us += pkt_dev->delay_us;
3460 pkt_dev->next_tx_ns += pkt_dev->delay_ns;
3461
3462 if (pkt_dev->next_tx_ns > 1000) {
3463 pkt_dev->next_tx_us++;
3464 pkt_dev->next_tx_ns -= 1000;
3465 }
222f1806 3466 }
1da177e4 3467
222f1806
LC		 3468 else { /* Retry it next time */
3469 pkt_dev->last_ok = 0;
3470 pkt_dev->next_tx_us = getCurUs(); /* TODO */
1da177e4 3471 pkt_dev->next_tx_ns = 0;
222f1806 3472 }
1da177e4 3473
932ff279 3474 netif_tx_unlock_bh(odev);
222f1806 3475
1da177e4
LT		 3476 /* If pkt_dev->count is zero, then run forever */
3477 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
3478 if (atomic_read(&(pkt_dev->skb->users)) != 1) {
3479 idle_start = getCurUs();
3480 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3481 if (signal_pending(current)) {
3482 break;
3483 }
3484 schedule();
3485 }
3486 pkt_dev->idle_acc += getCurUs() - idle_start;
3487 }
222f1806 3488
1da177e4
LT		 3489 /* Done with this */
3490 pktgen_stop_device(pkt_dev);
95ed63f7
AK		 3491 if (pkt_dev->skb)
3492 kfree_skb(pkt_dev->skb);
3493 pkt_dev->skb = NULL;
222f1806
LC		 3494 }
3495out:;
3496}
1da177e4 3497
4ec93edb 3498/*
1da177e4
LT		 3499 * Main loop of the thread goes here
3500 */
3501
ee74baa7 3502static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3503{
3504 DEFINE_WAIT(wait);
ee74baa7 3505 struct pktgen_thread *t = arg;
222f1806 3506 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3507 int cpu = t->cpu;
1da177e4 3508
ee74baa7 3509 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3510
3511 init_waitqueue_head(&t->queue);
3512
ba25f9dc 3513 pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3514
ee74baa7 3515 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3516
83144186
RW		 3517 set_freezable();
3518
ee74baa7
DM		 3519 while (!kthread_should_stop()) {
3520 pkt_dev = next_to_run(t);
1da177e4 3521
ee74baa7
DM		 3522 if (!pkt_dev &&
3523 (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
3524 == 0) {
3525 prepare_to_wait(&(t->queue), &wait,
3526 TASK_INTERRUPTIBLE);
3527 schedule_timeout(HZ / 10);
3528 finish_wait(&(t->queue), &wait);
3529 }
1da177e4 3530
ee74baa7 3531 __set_current_state(TASK_RUNNING);
222f1806 3532
b163911f 3533 if (pkt_dev)
1da177e4
LT		 3534 pktgen_xmit(pkt_dev);
3535
222f1806 3536 if (t->control & T_STOP) {
1da177e4
LT		 3537 pktgen_stop(t);
3538 t->control &= ~(T_STOP);
3539 }
3540
222f1806 3541 if (t->control & T_RUN) {
1da177e4
LT		 3542 pktgen_run(t);
3543 t->control &= ~(T_RUN);
3544 }
3545
222f1806 3546 if (t->control & T_REMDEVALL) {
1da177e4 3547 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3548 t->control &= ~(T_REMDEVALL);
3549 }
3550
222f1806 3551 if (t->control & T_REMDEV) {
95ed63f7 3552 pktgen_rem_one_if(t);
1da177e4
LT		 3553 t->control &= ~(T_REMDEV);
3554 }
3555
09fe3ef4
AM		 3556 try_to_freeze();
3557
ee74baa7 3558 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3559 }
1da177e4 3560
25c4e53a 3561 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3562 pktgen_stop(t);
1da177e4 3563
25c4e53a 3564 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3565 pktgen_rem_all_ifs(t);
1da177e4 3566
25c4e53a 3567 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3568 pktgen_rem_thread(t);
cdcdbe0b 3569
ee74baa7 3570 return 0;
1da177e4
LT		 3571}
3572
222f1806
LC		 3573static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3574 const char *ifname)
1da177e4 3575{
c26a8016 3576 struct pktgen_dev *p, *pkt_dev = NULL;
222f1806
LC		 3577 if_lock(t);
3578
c26a8016 3579 list_for_each_entry(p, &t->if_list, list)
39df232f 3580 if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
c26a8016 3581 pkt_dev = p;
222f1806
LC		 3582 break;
3583 }
222f1806
LC		 3584
3585 if_unlock(t);
25c4e53a 3586 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3587 return pkt_dev;
1da177e4
LT		 3588}
3589
4ec93edb
YH		 3590/*
3591 * Adds a dev at front of if_list.
1da177e4
LT		 3592 */
3593
222f1806
LC		 3594static int add_dev_to_thread(struct pktgen_thread *t,
3595 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3596{
3597 int rv = 0;
222f1806
LC		 3598
3599 if_lock(t);
3600
3601 if (pkt_dev->pg_thread) {
25a8b254
DM		 3602 printk(KERN_ERR "pktgen: ERROR: already assigned "
3603 "to a thread.\n");
222f1806
LC		 3604 rv = -EBUSY;
3605 goto out;
3606 }
c26a8016
LC		 3607
3608 list_add(&pkt_dev->list, &t->if_list);
222f1806 3609 pkt_dev->pg_thread = t;
1da177e4
LT		 3610 pkt_dev->running = 0;
3611
222f1806
LC		 3612out:
3613 if_unlock(t);
3614 return rv;
1da177e4
LT		 3615}
3616
3617/* Called under thread lock */
3618
222f1806 3619static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3620{
222f1806 3621 struct pktgen_dev *pkt_dev;
39df232f 3622 int err;
222f1806 3623
1da177e4
LT		 3624 /* We don't allow a device to be on several threads */
3625
d50a6b56
SH		 3626 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3627 if (pkt_dev) {
25a8b254 3628 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3629 return -EBUSY;
3630 }
d50a6b56
SH		 3631
3632 pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
3633 if (!pkt_dev)
3634 return -ENOMEM;
3635
222f1806 3636 pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56
SH		 3637 if (pkt_dev->flows == NULL) {
3638 kfree(pkt_dev);
3639 return -ENOMEM;
3640 }
222f1806 3641 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3642
95ed63f7 3643 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3644 pkt_dev->min_pkt_size = ETH_ZLEN;
3645 pkt_dev->max_pkt_size = ETH_ZLEN;
3646 pkt_dev->nfrags = 0;
3647 pkt_dev->clone_skb = pg_clone_skb_d;
3648 pkt_dev->delay_us = pg_delay_d / 1000;
3649 pkt_dev->delay_ns = pg_delay_d % 1000;
3650 pkt_dev->count = pg_count_d;
3651 pkt_dev->sofar = 0;
222f1806 3652 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3653 pkt_dev->udp_src_max = 9;
3654 pkt_dev->udp_dst_min = 9;
3655 pkt_dev->udp_dst_max = 9;
3656
34954ddc
FF		 3657 pkt_dev->vlan_p = 0;
3658 pkt_dev->vlan_cfi = 0;
3659 pkt_dev->vlan_id = 0xffff;
3660 pkt_dev->svlan_p = 0;
3661 pkt_dev->svlan_cfi = 0;
3662 pkt_dev->svlan_id = 0xffff;
3663
39df232f
SH		 3664 err = pktgen_setup_dev(pkt_dev, ifname);
3665 if (err)
3666 goto out1;
d50a6b56 3667
39df232f
SH		 3668 pkt_dev->entry = create_proc_entry(ifname, 0600, pg_proc_dir);
3669 if (!pkt_dev->entry) {
25a8b254 3670 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3671 PG_PROC_DIR, ifname);
39df232f
SH		 3672 err = -EINVAL;
3673 goto out2;
d50a6b56 3674 }
39df232f
SH		 3675 pkt_dev->entry->proc_fops = &pktgen_if_fops;
3676 pkt_dev->entry->data = pkt_dev;
a553e4a6
JHS		 3677#ifdef CONFIG_XFRM
3678 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3679 pkt_dev->ipsproto = IPPROTO_ESP;
3680#endif
d50a6b56
SH		 3681
3682 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3683out2:
3684 dev_put(pkt_dev->odev);
3685out1:
a553e4a6
JHS		 3686#ifdef CONFIG_XFRM
3687 free_SAs(pkt_dev);
3688#endif
39df232f
SH		 3689 if (pkt_dev->flows)
3690 vfree(pkt_dev->flows);
3691 kfree(pkt_dev);
3692 return err;
1da177e4
LT		 3693}
3694
ee74baa7 3695static int __init pktgen_create_thread(int cpu)
1da177e4 3696{
cdcdbe0b 3697 struct pktgen_thread *t;
d50a6b56 3698 struct proc_dir_entry *pe;
ee74baa7 3699 struct task_struct *p;
222f1806
LC		 3700
3701 t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
3702 if (!t) {
25a8b254
DM		 3703 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3704 "create new thread.\n");
222f1806
LC		 3705 return -ENOMEM;
3706 }
3707
222f1806 3708 spin_lock_init(&t->if_lock);
1da177e4 3709 t->cpu = cpu;
222f1806 3710
ee74baa7
DM		 3711 INIT_LIST_HEAD(&t->if_list);
3712
3713 list_add_tail(&t->th_list, &pktgen_threads);
3714
3715 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3716 if (IS_ERR(p)) {
25a8b254
DM		 3717 printk(KERN_ERR "pktgen: kernel_thread() failed "
3718 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3719 list_del(&t->th_list);
3720 kfree(t);
3721 return PTR_ERR(p);
3722 }
3723 kthread_bind(p, cpu);
3724 t->tsk = p;
3725
3726 pe = create_proc_entry(t->tsk->comm, 0600, pg_proc_dir);
222f1806 3727 if (!pe) {
25a8b254 3728 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3729 PG_PROC_DIR, t->tsk->comm);
3730 kthread_stop(p);
3731 list_del(&t->th_list);
222f1806
LC		 3732 kfree(t);
3733 return -EINVAL;
3734 }
d50a6b56
SH		 3735
3736 pe->proc_fops = &pktgen_thread_fops;
3737 pe->data = t;
1da177e4 3738
ee74baa7 3739 wake_up_process(p);
1da177e4
LT		 3740
3741 return 0;
3742}
3743
4ec93edb
YH		 3744/*
3745 * Removes a device from the thread if_list.
1da177e4 3746 */
222f1806
LC		 3747static void _rem_dev_from_if_list(struct pktgen_thread *t,
3748 struct pktgen_dev *pkt_dev)
1da177e4 3749{
c26a8016
LC		 3750 struct list_head *q, *n;
3751 struct pktgen_dev *p;
1da177e4 3752
c26a8016
LC		 3753 list_for_each_safe(q, n, &t->if_list) {
3754 p = list_entry(q, struct pktgen_dev, list);
3755 if (p == pkt_dev)
3756 list_del(&p->list);
1da177e4
LT		 3757 }
3758}
3759
222f1806
LC		 3760static int pktgen_remove_device(struct pktgen_thread *t,
3761 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3762{
3763
25c4e53a 3764 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3765
222f1806 3766 if (pkt_dev->running) {
25a8b254
DM		 3767 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3768 "running interface, stopping it now.\n");
222f1806
LC		 3769 pktgen_stop_device(pkt_dev);
3770 }
3771
3772 /* Dis-associate from the interface */
1da177e4
LT		 3773
3774 if (pkt_dev->odev) {
3775 dev_put(pkt_dev->odev);
222f1806
LC		 3776 pkt_dev->odev = NULL;
3777 }
3778
1da177e4
LT		 3779 /* And update the thread if_list */
3780
3781 _rem_dev_from_if_list(t, pkt_dev);
3782
39df232f
SH		 3783 if (pkt_dev->entry)
3784 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3785
a553e4a6
JHS		 3786#ifdef CONFIG_XFRM
3787 free_SAs(pkt_dev);
3788#endif
1da177e4
LT		 3789 if (pkt_dev->flows)
3790 vfree(pkt_dev->flows);
3791 kfree(pkt_dev);
222f1806 3792 return 0;
1da177e4
LT		 3793}
3794
222f1806 3795static int __init pg_init(void)
1da177e4
LT		 3796{
3797 int cpu;
d50a6b56 3798 struct proc_dir_entry *pe;
1da177e4 3799
25a8b254 3800 printk(KERN_INFO "%s", version);
1da177e4 3801
457c4cbc 3802 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3803 if (!pg_proc_dir)
3804 return -ENODEV;
3805 pg_proc_dir->owner = THIS_MODULE;
1da177e4 3806
d50a6b56 3807 pe = create_proc_entry(PGCTRL, 0600, pg_proc_dir);
222f1806 3808 if (pe == NULL) {
25a8b254
DM		 3809 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3810 "procfs entry.\n", PGCTRL);
457c4cbc 3811 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3812 return -EINVAL;
3813 }
1da177e4 3814
222f1806
LC		 3815 pe->proc_fops = &pktgen_fops;
3816 pe->data = NULL;
1da177e4
LT		 3817
3818 /* Register us to receive netdevice events */
3819 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3820
670c02c2 3821 for_each_online_cpu(cpu) {
8024bb24 3822 int err;
1da177e4 3823
ee74baa7 3824 err = pktgen_create_thread(cpu);
8024bb24 3825 if (err)
25a8b254
DM		 3826 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3827 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3828 }
8024bb24
LC		 3829
3830 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3831 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3832 "all threads\n");
8024bb24
LC		 3833 unregister_netdevice_notifier(&pktgen_notifier_block);
3834 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3835 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3836 return -ENODEV;
3837 }
3838
222f1806 3839 return 0;
1da177e4
LT		 3840}
3841
3842static void __exit pg_cleanup(void)
3843{
cdcdbe0b
LC		 3844 struct pktgen_thread *t;
3845 struct list_head *q, *n;
1da177e4
LT		 3846 wait_queue_head_t queue;
3847 init_waitqueue_head(&queue);
3848
222f1806 3849 /* Stop all interfaces & threads */
1da177e4 3850
cdcdbe0b
LC		 3851 list_for_each_safe(q, n, &pktgen_threads) {
3852 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3853 kthread_stop(t->tsk);
3854 kfree(t);
222f1806 3855 }
1da177e4 3856
222f1806 3857 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3858 unregister_netdevice_notifier(&pktgen_notifier_block);
3859
222f1806 3860 /* Clean up proc file system */
d50a6b56 3861 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3862 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3863}
3864
1da177e4
LT		 3865module_init(pg_init);
3866module_exit(pg_cleanup);
3867
3868MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
3869MODULE_DESCRIPTION("Packet Generator tool");
3870MODULE_LICENSE("GPL");
3871module_param(pg_count_d, int, 0);
3872module_param(pg_delay_d, int, 0);
3873module_param(pg_clone_skb_d, int, 0);
3874module_param(debug, int, 0);
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