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pktgen: Fix accuracy of inter-packet delay.
[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>
2bc481cf 134#include <linux/hrtimer.h>
09fe3ef4 135#include <linux/freezer.h>
1da177e4
LT		 136#include <linux/delay.h>
137#include <linux/timer.h>
cdcdbe0b 138#include <linux/list.h>
1da177e4
LT		 139#include <linux/init.h>
140#include <linux/skbuff.h>
141#include <linux/netdevice.h>
142#include <linux/inet.h>
143#include <linux/inetdevice.h>
144#include <linux/rtnetlink.h>
145#include <linux/if_arp.h>
34954ddc 146#include <linux/if_vlan.h>
1da177e4
LT		 147#include <linux/in.h>
148#include <linux/ip.h>
149#include <linux/ipv6.h>
150#include <linux/udp.h>
151#include <linux/proc_fs.h>
d50a6b56 152#include <linux/seq_file.h>
1da177e4 153#include <linux/wait.h>
f404e9a6 154#include <linux/etherdevice.h>
ee74baa7 155#include <linux/kthread.h>
457c4cbc 156#include <net/net_namespace.h>
1da177e4
LT		 157#include <net/checksum.h>
158#include <net/ipv6.h>
159#include <net/addrconf.h>
a553e4a6
JHS		 160#ifdef CONFIG_XFRM
161#include <net/xfrm.h>
162#endif
1da177e4
LT		 163#include <asm/byteorder.h>
164#include <linux/rcupdate.h>
1977f032 165#include <linux/bitops.h>
63adc6fb
SH		 166#include <linux/io.h>
167#include <linux/timex.h>
168#include <linux/uaccess.h>
1da177e4 169#include <asm/dma.h>
222f1806 170#include <asm/div64.h> /* do_div */
1da177e4 171
e99b99b4 172#define VERSION "2.73"
1da177e4 173#define IP_NAME_SZ 32
ca6549af 174#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 175#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4
LT		 176
177/* Device flag bits */
222f1806
LC		 178#define F_IPSRC_RND (1<<0) /* IP-Src Random */
179#define F_IPDST_RND (1<<1) /* IP-Dst Random */
180#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
181#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
182#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
183#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
184#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
185#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 186#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 187#define F_VID_RND (1<<9) /* Random VLAN ID */
188#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 189#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 190#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 191#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 192#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 193#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 194
195/* Thread control flag bits */
6b80d6a6
SH		 196#define T_STOP (1<<0) /* Stop run */
197#define T_RUN (1<<1) /* Start run */
198#define T_REMDEVALL (1<<2) /* Remove all devs */
199#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 200
1da177e4
LT		 201/* If lock -- can be removed after some work */
202#define if_lock(t) spin_lock(&(t->if_lock));
203#define if_unlock(t) spin_unlock(&(t->if_lock));
204
205/* Used to help with determining the pkts on receive */
206#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 207#define PG_PROC_DIR "pktgen"
208#define PGCTRL "pgctrl"
63adc6fb 209static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 210
211#define MAX_CFLOWS 65536
212
34954ddc
FF		 213#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
214#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
215
222f1806 216struct flow_state {
252e3346 217 __be32 cur_daddr;
222f1806 218 int count;
a553e4a6
JHS		 219#ifdef CONFIG_XFRM
220 struct xfrm_state *x;
221#endif
007a531b 222 __u32 flags;
1da177e4
LT		 223};
224
007a531b
JHS		 225/* flow flag bits */
226#define F_INIT (1<<0) /* flow has been initialized */
227
1da177e4 228struct pktgen_dev {
1da177e4
LT		 229 /*
230 * Try to keep frequent/infrequent used vars. separated.
231 */
39df232f
SH		 232 struct proc_dir_entry *entry; /* proc file */
233 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 234 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 235
63adc6fb 236 int running; /* if false, the test will stop */
1da177e4 237
222f1806
LC		 238 /* If min != max, then we will either do a linear iteration, or
239 * we will do a random selection from within the range.
240 */
241 __u32 flags;
95ed63f7
AK		 242 int removal_mark; /* non-zero => the device is marked for
243 * removal by worker thread */
1da177e4 244
222f1806
LC		 245 int min_pkt_size; /* = ETH_ZLEN; */
246 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 247 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 248 int nfrags;
fd29cf72
SH		 249 u64 delay; /* nano-seconds */
250
222f1806
LC		 251 __u64 count; /* Default No packets to send */
252 __u64 sofar; /* How many pkts we've sent so far */
253 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 254 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 255
256 /* runtime counters relating to clone_skb */
222f1806
LC		 257
258 __u64 allocated_skbs;
259 __u32 clone_count;
260 int last_ok; /* Was last skb sent?
63adc6fb
SH		 261 * Or a failed transmit of some sort?
262 * This will keep sequence numbers in order
222f1806 263 */
fd29cf72
SH		 264 ktime_t next_tx;
265 ktime_t started_at;
266 ktime_t stopped_at;
267 u64 idle_acc; /* nano-seconds */
268
222f1806
LC		 269 __u32 seq_num;
270
63adc6fb
SH		 271 int clone_skb; /*
272 * Use multiple SKBs during packet gen.
273 * If this number is greater than 1, then
274 * that many copies of the same packet will be
275 * sent before a new packet is allocated.
276 * If you want to send 1024 identical packets
277 * before creating a new packet,
278 * set clone_skb to 1024.
222f1806
LC		 279 */
280
281 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
282 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
283 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
284 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
285
286 struct in6_addr in6_saddr;
287 struct in6_addr in6_daddr;
288 struct in6_addr cur_in6_daddr;
289 struct in6_addr cur_in6_saddr;
1da177e4 290 /* For ranges */
222f1806
LC		 291 struct in6_addr min_in6_daddr;
292 struct in6_addr max_in6_daddr;
293 struct in6_addr min_in6_saddr;
294 struct in6_addr max_in6_saddr;
295
296 /* If we're doing ranges, random or incremental, then this
297 * defines the min/max for those ranges.
298 */
252e3346
AV		 299 __be32 saddr_min; /* inclusive, source IP address */
300 __be32 saddr_max; /* exclusive, source IP address */
301 __be32 daddr_min; /* inclusive, dest IP address */
302 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 303
304 __u16 udp_src_min; /* inclusive, source UDP port */
305 __u16 udp_src_max; /* exclusive, source UDP port */
306 __u16 udp_dst_min; /* inclusive, dest UDP port */
307 __u16 udp_dst_max; /* exclusive, dest UDP port */
308
1ca7768c 309 /* DSCP + ECN */
63adc6fb
SH		 310 __u8 tos; /* six MSB of (former) IPv4 TOS
311 are for dscp codepoint */
312 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
313 (see RFC 3260, sec. 4) */
1ca7768c 314
ca6549af
SW		 315 /* MPLS */
316 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
317 __be32 labels[MAX_MPLS_LABELS];
318
34954ddc
FF		 319 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
320 __u8 vlan_p;
321 __u8 vlan_cfi;
322 __u16 vlan_id; /* 0xffff means no vlan tag */
323
324 __u8 svlan_p;
325 __u8 svlan_cfi;
326 __u16 svlan_id; /* 0xffff means no svlan tag */
327
222f1806
LC		 328 __u32 src_mac_count; /* How many MACs to iterate through */
329 __u32 dst_mac_count; /* How many MACs to iterate through */
330
331 unsigned char dst_mac[ETH_ALEN];
332 unsigned char src_mac[ETH_ALEN];
333
334 __u32 cur_dst_mac_offset;
335 __u32 cur_src_mac_offset;
252e3346
AV		 336 __be32 cur_saddr;
337 __be32 cur_daddr;
66ed1e5e 338 __u16 ip_id;
222f1806
LC		 339 __u16 cur_udp_dst;
340 __u16 cur_udp_src;
45b270f8 341 __u16 cur_queue_map;
222f1806 342 __u32 cur_pkt_size;
baac8564 343 __u32 last_pkt_size;
222f1806
LC		 344
345 __u8 hh[14];
346 /* = {
347 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
348
349 We fill in SRC address later
350 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
351 0x08, 0x00
352 };
353 */
354 __u16 pad; /* pad out the hh struct to an even 16 bytes */
355
63adc6fb 356 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 357 * are transmitting the same one multiple times
358 */
63adc6fb
SH		 359 struct net_device *odev; /* The out-going device.
360 * Note that the device should have it's
361 * pg_info pointer pointing back to this
362 * device.
363 * Set when the user specifies the out-going
364 * device name (not when the inject is
365 * started as it used to do.)
366 */
593f63b0 367 char odevname[32];
1da177e4 368 struct flow_state *flows;
222f1806
LC		 369 unsigned cflows; /* Concurrent flows (config) */
370 unsigned lflow; /* Flow length (config) */
371 unsigned nflows; /* accumulated flows (stats) */
007a531b 372 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 373
374 u16 queue_map_min;
375 u16 queue_map_max;
e99b99b4 376 int node; /* Memory node */
45b270f8 377
a553e4a6
JHS		 378#ifdef CONFIG_XFRM
379 __u8 ipsmode; /* IPSEC mode (config) */
380 __u8 ipsproto; /* IPSEC type (config) */
381#endif
39df232f 382 char result[512];
1da177e4
LT		 383};
384
385struct pktgen_hdr {
252e3346
AV		 386 __be32 pgh_magic;
387 __be32 seq_num;
388 __be32 tv_sec;
389 __be32 tv_usec;
1da177e4
LT		 390};
391
392struct pktgen_thread {
63adc6fb 393 spinlock_t if_lock; /* for list of devices */
c26a8016 394 struct list_head if_list; /* All device here */
cdcdbe0b 395 struct list_head th_list;
ee74baa7 396 struct task_struct *tsk;
222f1806 397 char result[512];
222f1806 398
63adc6fb
SH		 399 /* Field for thread to receive "posted" events terminate,
400 stop ifs etc. */
222f1806
LC		 401
402 u32 control;
1da177e4
LT		 403 int cpu;
404
222f1806 405 wait_queue_head_t queue;
d3ede327 406 struct completion start_done;
1da177e4
LT		 407};
408
409#define REMOVE 1
410#define FIND 0
411
fd29cf72 412static inline ktime_t ktime_now(void)
1da177e4 413{
fd29cf72
SH		 414 struct timespec ts;
415 ktime_get_ts(&ts);
416
417 return timespec_to_ktime(ts);
1da177e4
LT		 418}
419
fd29cf72
SH		 420/* This works even if 32 bit because of careful byte order choice */
421static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 422{
fd29cf72 423 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 424}
425
c3d2f52d
SH		 426static const char version[] =
427 "pktgen " VERSION ": Packet Generator for packet performance testing.\n";
1da177e4 428
222f1806
LC		 429static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
430static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
431static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 432 const char *ifname, bool exact);
1da177e4
LT		 433static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
434static void pktgen_run_all_threads(void);
eb37b41c 435static void pktgen_reset_all_threads(void);
1da177e4 436static void pktgen_stop_all_threads_ifs(void);
3bda06a3 437
222f1806 438static void pktgen_stop(struct pktgen_thread *t);
1da177e4 439static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 440
222f1806
LC		 441static unsigned int scan_ip6(const char *s, char ip[16]);
442static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 443
444/* Module parameters, defaults. */
65c5b786
SH		 445static int pg_count_d __read_mostly = 1000;
446static int pg_delay_d __read_mostly;
447static int pg_clone_skb_d __read_mostly;
448static int debug __read_mostly;
1da177e4 449
222fa076 450static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 451static LIST_HEAD(pktgen_threads);
1da177e4 452
1da177e4
LT		 453static struct notifier_block pktgen_notifier_block = {
454 .notifier_call = pktgen_device_event,
455};
456
1da177e4 457/*
4ec93edb 458 * /proc handling functions
1da177e4
LT		 459 *
460 */
461
d50a6b56 462static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 463{
c3d2f52d 464 seq_puts(seq, version);
d50a6b56 465 return 0;
1da177e4
LT		 466}
467
63adc6fb
SH		 468static ssize_t pgctrl_write(struct file *file, const char __user *buf,
469 size_t count, loff_t *ppos)
1da177e4 470{
1da177e4 471 int err = 0;
d50a6b56 472 char data[128];
1da177e4 473
222f1806
LC		 474 if (!capable(CAP_NET_ADMIN)) {
475 err = -EPERM;
1da177e4 476 goto out;
222f1806 477 }
1da177e4 478
d50a6b56
SH		 479 if (count > sizeof(data))
480 count = sizeof(data);
1da177e4 481
1da177e4 482 if (copy_from_user(data, buf, count)) {
b4099fab 483 err = -EFAULT;
d50a6b56 484 goto out;
222f1806
LC		 485 }
486 data[count - 1] = 0; /* Make string */
1da177e4 487
222f1806 488 if (!strcmp(data, "stop"))
1da177e4
LT		 489 pktgen_stop_all_threads_ifs();
490
222f1806 491 else if (!strcmp(data, "start"))
1da177e4
LT		 492 pktgen_run_all_threads();
493
eb37b41c
JB		 494 else if (!strcmp(data, "reset"))
495 pktgen_reset_all_threads();
496
222f1806 497 else
25a8b254 498 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 499
500 err = count;
501
222f1806
LC		 502out:
503 return err;
1da177e4
LT		 504}
505
d50a6b56
SH		 506static int pgctrl_open(struct inode *inode, struct file *file)
507{
508 return single_open(file, pgctrl_show, PDE(inode)->data);
509}
510
9a32144e 511static const struct file_operations pktgen_fops = {
222f1806
LC		 512 .owner = THIS_MODULE,
513 .open = pgctrl_open,
514 .read = seq_read,
515 .llseek = seq_lseek,
516 .write = pgctrl_write,
517 .release = single_release,
d50a6b56
SH		 518};
519
520static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 521{
648fda74 522 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 523 ktime_t stopped;
524 u64 idle;
222f1806
LC		 525
526 seq_printf(seq,
527 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
528 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
529 pkt_dev->max_pkt_size);
530
531 seq_printf(seq,
fd29cf72
SH		 532 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
533 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 534 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 535
536 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
537 pkt_dev->lflow);
538
45b270f8
RO		 539 seq_printf(seq,
540 " queue_map_min: %u queue_map_max: %u\n",
541 pkt_dev->queue_map_min,
542 pkt_dev->queue_map_max);
543
222f1806
LC		 544 if (pkt_dev->flags & F_IPV6) {
545 char b1[128], b2[128], b3[128];
546 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
547 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
548 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
549 seq_printf(seq,
550 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
551 b2, b3);
552
553 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
554 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
555 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
556 seq_printf(seq,
557 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
558 b2, b3);
559
63adc6fb
SH		 560 } else {
561 seq_printf(seq,
562 " dst_min: %s dst_max: %s\n",
563 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 564 seq_printf(seq,
63adc6fb
SH		 565 " src_min: %s src_max: %s\n",
566 pkt_dev->src_min, pkt_dev->src_max);
567 }
1da177e4 568
222f1806 569 seq_puts(seq, " src_mac: ");
1da177e4 570
e174961c
JB		 571 seq_printf(seq, "%pM ",
572 is_zero_ether_addr(pkt_dev->src_mac) ?
573 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 574
575 seq_printf(seq, "dst_mac: ");
e174961c 576 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 577
578 seq_printf(seq,
63adc6fb
SH		 579 " udp_src_min: %d udp_src_max: %d"
580 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 581 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
582 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
583
584 seq_printf(seq,
ca6549af 585 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 586 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 587
ca6549af
SW		 588 if (pkt_dev->nr_labels) {
589 unsigned i;
590 seq_printf(seq, " mpls: ");
e71a4783 591 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 592 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
593 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
594 }
595
63adc6fb 596 if (pkt_dev->vlan_id != 0xffff)
34954ddc 597 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 598 pkt_dev->vlan_id, pkt_dev->vlan_p,
599 pkt_dev->vlan_cfi);
34954ddc 600
63adc6fb 601 if (pkt_dev->svlan_id != 0xffff)
34954ddc 602 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 603 pkt_dev->svlan_id, pkt_dev->svlan_p,
604 pkt_dev->svlan_cfi);
34954ddc 605
63adc6fb 606 if (pkt_dev->tos)
1ca7768c 607 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 608
63adc6fb 609 if (pkt_dev->traffic_class)
1ca7768c 610 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 611
e99b99b4
RO		 612 if (pkt_dev->node >= 0)
613 seq_printf(seq, " node: %d\n", pkt_dev->node);
614
ca6549af
SW		 615 seq_printf(seq, " Flags: ");
616
222f1806
LC		 617 if (pkt_dev->flags & F_IPV6)
618 seq_printf(seq, "IPV6 ");
1da177e4 619
222f1806
LC		 620 if (pkt_dev->flags & F_IPSRC_RND)
621 seq_printf(seq, "IPSRC_RND ");
1da177e4 622
222f1806
LC		 623 if (pkt_dev->flags & F_IPDST_RND)
624 seq_printf(seq, "IPDST_RND ");
1da177e4 625
222f1806
LC		 626 if (pkt_dev->flags & F_TXSIZE_RND)
627 seq_printf(seq, "TXSIZE_RND ");
1da177e4 628
222f1806
LC		 629 if (pkt_dev->flags & F_UDPSRC_RND)
630 seq_printf(seq, "UDPSRC_RND ");
1da177e4 631
222f1806
LC		 632 if (pkt_dev->flags & F_UDPDST_RND)
633 seq_printf(seq, "UDPDST_RND ");
1da177e4 634
ca6549af
SW		 635 if (pkt_dev->flags & F_MPLS_RND)
636 seq_printf(seq, "MPLS_RND ");
637
45b270f8
RO		 638 if (pkt_dev->flags & F_QUEUE_MAP_RND)
639 seq_printf(seq, "QUEUE_MAP_RND ");
640
e6fce5b9
RO		 641 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
642 seq_printf(seq, "QUEUE_MAP_CPU ");
643
007a531b
JHS		 644 if (pkt_dev->cflows) {
645 if (pkt_dev->flags & F_FLOW_SEQ)
646 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
647 else
648 seq_printf(seq, "FLOW_RND ");
649 }
650
a553e4a6
JHS		 651#ifdef CONFIG_XFRM
652 if (pkt_dev->flags & F_IPSEC_ON)
653 seq_printf(seq, "IPSEC ");
654#endif
655
222f1806
LC		 656 if (pkt_dev->flags & F_MACSRC_RND)
657 seq_printf(seq, "MACSRC_RND ");
1da177e4 658
222f1806
LC		 659 if (pkt_dev->flags & F_MACDST_RND)
660 seq_printf(seq, "MACDST_RND ");
1da177e4 661
34954ddc
FF		 662 if (pkt_dev->flags & F_VID_RND)
663 seq_printf(seq, "VID_RND ");
664
665 if (pkt_dev->flags & F_SVID_RND)
666 seq_printf(seq, "SVID_RND ");
667
e99b99b4
RO		 668 if (pkt_dev->flags & F_NODE)
669 seq_printf(seq, "NODE_ALLOC ");
670
222f1806
LC		 671 seq_puts(seq, "\n");
672
fd29cf72
SH		 673 /* not really stopped, more like last-running-at */
674 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
675 idle = pkt_dev->idle_acc;
676 do_div(idle, NSEC_PER_USEC);
1da177e4 677
222f1806 678 seq_printf(seq,
fd29cf72 679 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 680 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 681 (unsigned long long)pkt_dev->errors);
682
683 seq_printf(seq,
684 " started: %lluus stopped: %lluus idle: %lluus\n",
685 (unsigned long long) ktime_to_us(pkt_dev->started_at),
686 (unsigned long long) ktime_to_us(stopped),
687 (unsigned long long) idle);
1da177e4 688
222f1806
LC		 689 seq_printf(seq,
690 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 691 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
692 pkt_dev->cur_src_mac_offset);
1da177e4 693
222f1806 694 if (pkt_dev->flags & F_IPV6) {
1da177e4 695 char b1[128], b2[128];
222f1806
LC		 696 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
697 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
698 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
699 } else
700 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 701 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 702
222f1806 703 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 704 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 705
45b270f8
RO		 706 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
707
222f1806 708 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 709
710 if (pkt_dev->result[0])
222f1806 711 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 712 else
222f1806 713 seq_printf(seq, "Result: Idle\n");
1da177e4 714
d50a6b56 715 return 0;
1da177e4
LT		 716}
717
ca6549af 718
63adc6fb
SH		 719static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
720 __u32 *num)
ca6549af
SW		 721{
722 int i = 0;
723 *num = 0;
724
e71a4783 725 for (; i < maxlen; i++) {
ca6549af
SW		 726 char c;
727 *num <<= 4;
728 if (get_user(c, &user_buffer[i]))
729 return -EFAULT;
730 if ((c >= '0') && (c <= '9'))
731 *num |= c - '0';
732 else if ((c >= 'a') && (c <= 'f'))
733 *num |= c - 'a' + 10;
734 else if ((c >= 'A') && (c <= 'F'))
735 *num |= c - 'A' + 10;
736 else
737 break;
738 }
739 return i;
740}
741
222f1806
LC		 742static int count_trail_chars(const char __user * user_buffer,
743 unsigned int maxlen)
1da177e4
LT		 744{
745 int i;
746
747 for (i = 0; i < maxlen; i++) {
222f1806
LC		 748 char c;
749 if (get_user(c, &user_buffer[i]))
750 return -EFAULT;
751 switch (c) {
1da177e4
LT		 752 case '\"':
753 case '\n':
754 case '\r':
755 case '\t':
756 case ' ':
757 case '=':
758 break;
759 default:
760 goto done;
3ff50b79 761 }
1da177e4
LT		 762 }
763done:
764 return i;
765}
766
222f1806
LC		 767static unsigned long num_arg(const char __user * user_buffer,
768 unsigned long maxlen, unsigned long *num)
1da177e4
LT		 769{
770 int i = 0;
771 *num = 0;
222f1806
LC		 772
773 for (; i < maxlen; i++) {
774 char c;
775 if (get_user(c, &user_buffer[i]))
776 return -EFAULT;
777 if ((c >= '0') && (c <= '9')) {
1da177e4 778 *num *= 10;
222f1806 779 *num += c - '0';
1da177e4
LT		 780 } else
781 break;
782 }
783 return i;
784}
785
222f1806 786static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4
LT		 787{
788 int i = 0;
789
222f1806
LC		 790 for (; i < maxlen; i++) {
791 char c;
792 if (get_user(c, &user_buffer[i]))
793 return -EFAULT;
794 switch (c) {
1da177e4
LT		 795 case '\"':
796 case '\n':
797 case '\r':
798 case '\t':
799 case ' ':
800 goto done_str;
801 break;
802 default:
803 break;
3ff50b79 804 }
1da177e4
LT		 805 }
806done_str:
1da177e4
LT		 807 return i;
808}
809
ca6549af
SW		 810static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
811{
812 unsigned n = 0;
813 char c;
814 ssize_t i = 0;
815 int len;
816
817 pkt_dev->nr_labels = 0;
818 do {
819 __u32 tmp;
1ca7768c 820 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 821 if (len <= 0)
822 return len;
823 pkt_dev->labels[n] = htonl(tmp);
824 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
825 pkt_dev->flags |= F_MPLS_RND;
826 i += len;
827 if (get_user(c, &buffer[i]))
828 return -EFAULT;
829 i++;
830 n++;
831 if (n >= MAX_MPLS_LABELS)
832 return -E2BIG;
e71a4783 833 } while (c == ',');
ca6549af
SW		 834
835 pkt_dev->nr_labels = n;
836 return i;
837}
838
222f1806
LC		 839static ssize_t pktgen_if_write(struct file *file,
840 const char __user * user_buffer, size_t count,
841 loff_t * offset)
1da177e4 842{
222f1806
LC		 843 struct seq_file *seq = (struct seq_file *)file->private_data;
844 struct pktgen_dev *pkt_dev = seq->private;
1da177e4
LT		 845 int i = 0, max, len;
846 char name[16], valstr[32];
847 unsigned long value = 0;
222f1806
LC		 848 char *pg_result = NULL;
849 int tmp = 0;
1da177e4 850 char buf[128];
222f1806
LC		 851
852 pg_result = &(pkt_dev->result[0]);
853
1da177e4 854 if (count < 1) {
25a8b254 855 printk(KERN_WARNING "pktgen: wrong command format\n");
1da177e4
LT		 856 return -EINVAL;
857 }
222f1806 858
1da177e4
LT		 859 max = count - i;
860 tmp = count_trail_chars(&user_buffer[i], max);
222f1806 861 if (tmp < 0) {
25a8b254 862 printk(KERN_WARNING "pktgen: illegal format\n");
222f1806 863 return tmp;
1da177e4 864 }
222f1806
LC		 865 i += tmp;
866
1da177e4
LT		 867 /* Read variable name */
868
869 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 870 if (len < 0)
222f1806 871 return len;
63adc6fb 872
1da177e4 873 memset(name, 0, sizeof(name));
222f1806 874 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 875 return -EFAULT;
876 i += len;
222f1806
LC		 877
878 max = count - i;
1da177e4 879 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 880 if (len < 0)
881 return len;
882
1da177e4
LT		 883 i += len;
884
885 if (debug) {
222f1806
LC		 886 char tb[count + 1];
887 if (copy_from_user(tb, user_buffer, count))
1da177e4 888 return -EFAULT;
222f1806 889 tb[count] = 0;
25a8b254 890 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 891 (unsigned long)count, tb);
892 }
1da177e4
LT		 893
894 if (!strcmp(name, "min_pkt_size")) {
895 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 896 if (len < 0)
222f1806 897 return len;
63adc6fb 898
1da177e4 899 i += len;
222f1806
LC		 900 if (value < 14 + 20 + 8)
901 value = 14 + 20 + 8;
902 if (value != pkt_dev->min_pkt_size) {
903 pkt_dev->min_pkt_size = value;
904 pkt_dev->cur_pkt_size = value;
905 }
906 sprintf(pg_result, "OK: min_pkt_size=%u",
907 pkt_dev->min_pkt_size);
1da177e4
LT		 908 return count;
909 }
910
222f1806 911 if (!strcmp(name, "max_pkt_size")) {
1da177e4 912 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 913 if (len < 0)
222f1806 914 return len;
63adc6fb 915
1da177e4 916 i += len;
222f1806
LC		 917 if (value < 14 + 20 + 8)
918 value = 14 + 20 + 8;
919 if (value != pkt_dev->max_pkt_size) {
920 pkt_dev->max_pkt_size = value;
921 pkt_dev->cur_pkt_size = value;
922 }
923 sprintf(pg_result, "OK: max_pkt_size=%u",
924 pkt_dev->max_pkt_size);
1da177e4
LT		 925 return count;
926 }
927
222f1806 928 /* Shortcut for min = max */
1da177e4
LT		 929
930 if (!strcmp(name, "pkt_size")) {
931 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 932 if (len < 0)
222f1806 933 return len;
63adc6fb 934
1da177e4 935 i += len;
222f1806
LC		 936 if (value < 14 + 20 + 8)
937 value = 14 + 20 + 8;
938 if (value != pkt_dev->min_pkt_size) {
939 pkt_dev->min_pkt_size = value;
940 pkt_dev->max_pkt_size = value;
941 pkt_dev->cur_pkt_size = value;
942 }
1da177e4
LT		 943 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
944 return count;
945 }
946
222f1806 947 if (!strcmp(name, "debug")) {
1da177e4 948 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 949 if (len < 0)
222f1806 950 return len;
63adc6fb 951
1da177e4 952 i += len;
222f1806 953 debug = value;
1da177e4
LT		 954 sprintf(pg_result, "OK: debug=%u", debug);
955 return count;
956 }
957
222f1806 958 if (!strcmp(name, "frags")) {
1da177e4 959 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 960 if (len < 0)
222f1806 961 return len;
63adc6fb 962
1da177e4
LT		 963 i += len;
964 pkt_dev->nfrags = value;
965 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
966 return count;
967 }
968 if (!strcmp(name, "delay")) {
969 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 970 if (len < 0)
222f1806 971 return len;
63adc6fb 972
1da177e4 973 i += len;
fd29cf72
SH		 974 if (value == 0x7FFFFFFF)
975 pkt_dev->delay = ULLONG_MAX;
976 else
9240d715 977 pkt_dev->delay = (u64)value;
fd29cf72
SH		 978
979 sprintf(pg_result, "OK: delay=%llu",
980 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 981 return count;
982 }
222f1806 983 if (!strcmp(name, "udp_src_min")) {
1da177e4 984 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 985 if (len < 0)
222f1806 986 return len;
63adc6fb 987
1da177e4 988 i += len;
222f1806
LC		 989 if (value != pkt_dev->udp_src_min) {
990 pkt_dev->udp_src_min = value;
991 pkt_dev->cur_udp_src = value;
992 }
1da177e4
LT		 993 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
994 return count;
995 }
222f1806 996 if (!strcmp(name, "udp_dst_min")) {
1da177e4 997 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 998 if (len < 0)
222f1806 999 return len;
63adc6fb 1000
1da177e4 1001 i += len;
222f1806
LC		 1002 if (value != pkt_dev->udp_dst_min) {
1003 pkt_dev->udp_dst_min = value;
1004 pkt_dev->cur_udp_dst = value;
1005 }
1da177e4
LT		 1006 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1007 return count;
1008 }
222f1806 1009 if (!strcmp(name, "udp_src_max")) {
1da177e4 1010 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1011 if (len < 0)
222f1806 1012 return len;
63adc6fb 1013
1da177e4 1014 i += len;
222f1806
LC		 1015 if (value != pkt_dev->udp_src_max) {
1016 pkt_dev->udp_src_max = value;
1017 pkt_dev->cur_udp_src = value;
1018 }
1da177e4
LT		 1019 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1020 return count;
1021 }
222f1806 1022 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1023 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1024 if (len < 0)
222f1806 1025 return len;
63adc6fb 1026
1da177e4 1027 i += len;
222f1806
LC		 1028 if (value != pkt_dev->udp_dst_max) {
1029 pkt_dev->udp_dst_max = value;
1030 pkt_dev->cur_udp_dst = value;
1031 }
1da177e4
LT		 1032 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1033 return count;
1034 }
1035 if (!strcmp(name, "clone_skb")) {
1036 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1037 if (len < 0)
222f1806 1038 return len;
63adc6fb 1039
1da177e4 1040 i += len;
222f1806
LC		 1041 pkt_dev->clone_skb = value;
1042
1da177e4
LT		 1043 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1044 return count;
1045 }
1046 if (!strcmp(name, "count")) {
1047 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1048 if (len < 0)
222f1806 1049 return len;
63adc6fb 1050
1da177e4
LT		 1051 i += len;
1052 pkt_dev->count = value;
1053 sprintf(pg_result, "OK: count=%llu",
222f1806 1054 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1055 return count;
1056 }
1057 if (!strcmp(name, "src_mac_count")) {
1058 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1059 if (len < 0)
222f1806 1060 return len;
63adc6fb 1061
1da177e4
LT		 1062 i += len;
1063 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1064 pkt_dev->src_mac_count = value;
1065 pkt_dev->cur_src_mac_offset = 0;
1066 }
1067 sprintf(pg_result, "OK: src_mac_count=%d",
1068 pkt_dev->src_mac_count);
1da177e4
LT		 1069 return count;
1070 }
1071 if (!strcmp(name, "dst_mac_count")) {
1072 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1073 if (len < 0)
222f1806 1074 return len;
63adc6fb 1075
1da177e4
LT		 1076 i += len;
1077 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1078 pkt_dev->dst_mac_count = value;
1079 pkt_dev->cur_dst_mac_offset = 0;
1080 }
1081 sprintf(pg_result, "OK: dst_mac_count=%d",
1082 pkt_dev->dst_mac_count);
1da177e4
LT		 1083 return count;
1084 }
e99b99b4
RO		 1085 if (!strcmp(name, "node")) {
1086 len = num_arg(&user_buffer[i], 10, &value);
1087 if (len < 0)
1088 return len;
1089
1090 i += len;
1091
1092 if (node_possible(value)) {
1093 pkt_dev->node = value;
1094 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
1095 }
1096 else
1097 sprintf(pg_result, "ERROR: node not possible");
1098 return count;
1099 }
1da177e4 1100 if (!strcmp(name, "flag")) {
222f1806
LC		 1101 char f[32];
1102 memset(f, 0, 32);
1da177e4 1103 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1104 if (len < 0)
222f1806 1105 return len;
63adc6fb 1106
1da177e4
LT		 1107 if (copy_from_user(f, &user_buffer[i], len))
1108 return -EFAULT;
1109 i += len;
222f1806
LC		 1110 if (strcmp(f, "IPSRC_RND") == 0)
1111 pkt_dev->flags |= F_IPSRC_RND;
1112
1113 else if (strcmp(f, "!IPSRC_RND") == 0)
1114 pkt_dev->flags &= ~F_IPSRC_RND;
1115
1116 else if (strcmp(f, "TXSIZE_RND") == 0)
1117 pkt_dev->flags |= F_TXSIZE_RND;
1118
1119 else if (strcmp(f, "!TXSIZE_RND") == 0)
1120 pkt_dev->flags &= ~F_TXSIZE_RND;
1121
1122 else if (strcmp(f, "IPDST_RND") == 0)
1123 pkt_dev->flags |= F_IPDST_RND;
1124
1125 else if (strcmp(f, "!IPDST_RND") == 0)
1126 pkt_dev->flags &= ~F_IPDST_RND;
1127
1128 else if (strcmp(f, "UDPSRC_RND") == 0)
1129 pkt_dev->flags |= F_UDPSRC_RND;
1130
1131 else if (strcmp(f, "!UDPSRC_RND") == 0)
1132 pkt_dev->flags &= ~F_UDPSRC_RND;
1133
1134 else if (strcmp(f, "UDPDST_RND") == 0)
1135 pkt_dev->flags |= F_UDPDST_RND;
1136
1137 else if (strcmp(f, "!UDPDST_RND") == 0)
1138 pkt_dev->flags &= ~F_UDPDST_RND;
1139
1140 else if (strcmp(f, "MACSRC_RND") == 0)
1141 pkt_dev->flags |= F_MACSRC_RND;
1142
1143 else if (strcmp(f, "!MACSRC_RND") == 0)
1144 pkt_dev->flags &= ~F_MACSRC_RND;
1145
1146 else if (strcmp(f, "MACDST_RND") == 0)
1147 pkt_dev->flags |= F_MACDST_RND;
1148
1149 else if (strcmp(f, "!MACDST_RND") == 0)
1150 pkt_dev->flags &= ~F_MACDST_RND;
1151
ca6549af
SW		 1152 else if (strcmp(f, "MPLS_RND") == 0)
1153 pkt_dev->flags |= F_MPLS_RND;
1154
1155 else if (strcmp(f, "!MPLS_RND") == 0)
1156 pkt_dev->flags &= ~F_MPLS_RND;
1157
34954ddc
FF		 1158 else if (strcmp(f, "VID_RND") == 0)
1159 pkt_dev->flags |= F_VID_RND;
1160
1161 else if (strcmp(f, "!VID_RND") == 0)
1162 pkt_dev->flags &= ~F_VID_RND;
1163
1164 else if (strcmp(f, "SVID_RND") == 0)
1165 pkt_dev->flags |= F_SVID_RND;
1166
1167 else if (strcmp(f, "!SVID_RND") == 0)
1168 pkt_dev->flags &= ~F_SVID_RND;
1169
007a531b
JHS		 1170 else if (strcmp(f, "FLOW_SEQ") == 0)
1171 pkt_dev->flags |= F_FLOW_SEQ;
1172
45b270f8
RO		 1173 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1174 pkt_dev->flags |= F_QUEUE_MAP_RND;
1175
1176 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1177 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1178
1179 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1180 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1181
1182 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1183 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1184#ifdef CONFIG_XFRM
1185 else if (strcmp(f, "IPSEC") == 0)
1186 pkt_dev->flags |= F_IPSEC_ON;
1187#endif
1188
1ca7768c
FF		 1189 else if (strcmp(f, "!IPV6") == 0)
1190 pkt_dev->flags &= ~F_IPV6;
1191
e99b99b4
RO		 1192 else if (strcmp(f, "NODE_ALLOC") == 0)
1193 pkt_dev->flags |= F_NODE;
1194
1195 else if (strcmp(f, "!NODE_ALLOC") == 0)
1196 pkt_dev->flags &= ~F_NODE;
1197
222f1806
LC		 1198 else {
1199 sprintf(pg_result,
1200 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1201 f,
1ca7768c 1202 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1203 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1204 return count;
1205 }
1da177e4
LT		 1206 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1207 return count;
1208 }
1209 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1210 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1211 if (len < 0)
222f1806 1212 return len;
1da177e4 1213
222f1806 1214 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1215 return -EFAULT;
222f1806
LC		 1216 buf[len] = 0;
1217 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1218 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1219 strncpy(pkt_dev->dst_min, buf, len);
1220 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1221 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1222 }
1223 if (debug)
25a8b254 1224 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1225 pkt_dev->dst_min);
1226 i += len;
1da177e4
LT		 1227 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1228 return count;
1229 }
1230 if (!strcmp(name, "dst_max")) {
1231 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1232 if (len < 0)
222f1806 1233 return len;
63adc6fb 1234
1da177e4 1235
222f1806 1236 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1237 return -EFAULT;
1238
222f1806
LC		 1239 buf[len] = 0;
1240 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1241 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1242 strncpy(pkt_dev->dst_max, buf, len);
1243 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1244 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1245 }
1246 if (debug)
25a8b254 1247 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1248 pkt_dev->dst_max);
1da177e4
LT		 1249 i += len;
1250 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1251 return count;
1252 }
1253 if (!strcmp(name, "dst6")) {
1254 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1255 if (len < 0)
1256 return len;
1da177e4
LT		 1257
1258 pkt_dev->flags |= F_IPV6;
1259
222f1806 1260 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1261 return -EFAULT;
222f1806 1262 buf[len] = 0;
1da177e4
LT		 1263
1264 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1265 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1266
1267 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1268
222f1806 1269 if (debug)
25a8b254 1270 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1271
222f1806 1272 i += len;
1da177e4
LT		 1273 sprintf(pg_result, "OK: dst6=%s", buf);
1274 return count;
1275 }
1276 if (!strcmp(name, "dst6_min")) {
1277 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1278 if (len < 0)
1279 return len;
1da177e4
LT		 1280
1281 pkt_dev->flags |= F_IPV6;
1282
222f1806 1283 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1284 return -EFAULT;
222f1806 1285 buf[len] = 0;
1da177e4
LT		 1286
1287 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1288 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1289
222f1806
LC		 1290 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1291 &pkt_dev->min_in6_daddr);
1292 if (debug)
25a8b254 1293 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1294
222f1806 1295 i += len;
1da177e4
LT		 1296 sprintf(pg_result, "OK: dst6_min=%s", buf);
1297 return count;
1298 }
1299 if (!strcmp(name, "dst6_max")) {
1300 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1301 if (len < 0)
1302 return len;
1da177e4
LT		 1303
1304 pkt_dev->flags |= F_IPV6;
1305
222f1806 1306 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1307 return -EFAULT;
222f1806 1308 buf[len] = 0;
1da177e4
LT		 1309
1310 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1311 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1312
222f1806 1313 if (debug)
25a8b254 1314 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1315
222f1806 1316 i += len;
1da177e4
LT		 1317 sprintf(pg_result, "OK: dst6_max=%s", buf);
1318 return count;
1319 }
1320 if (!strcmp(name, "src6")) {
1321 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1322 if (len < 0)
1323 return len;
1da177e4
LT		 1324
1325 pkt_dev->flags |= F_IPV6;
1326
222f1806 1327 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1328 return -EFAULT;
222f1806 1329 buf[len] = 0;
1da177e4
LT		 1330
1331 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1332 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1333
1334 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1335
222f1806 1336 if (debug)
25a8b254 1337 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1338
1339 i += len;
1da177e4
LT		 1340 sprintf(pg_result, "OK: src6=%s", buf);
1341 return count;
1342 }
1343 if (!strcmp(name, "src_min")) {
1344 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1345 if (len < 0)
222f1806 1346 return len;
63adc6fb 1347
222f1806 1348 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1349 return -EFAULT;
222f1806
LC		 1350 buf[len] = 0;
1351 if (strcmp(buf, pkt_dev->src_min) != 0) {
1352 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1353 strncpy(pkt_dev->src_min, buf, len);
1354 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1355 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1356 }
1357 if (debug)
25a8b254 1358 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1359 pkt_dev->src_min);
1da177e4
LT		 1360 i += len;
1361 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1362 return count;
1363 }
1364 if (!strcmp(name, "src_max")) {
1365 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1366 if (len < 0)
222f1806 1367 return len;
63adc6fb 1368
222f1806 1369 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1370 return -EFAULT;
222f1806
LC		 1371 buf[len] = 0;
1372 if (strcmp(buf, pkt_dev->src_max) != 0) {
1373 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1374 strncpy(pkt_dev->src_max, buf, len);
1375 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1376 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1377 }
1378 if (debug)
25a8b254 1379 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1380 pkt_dev->src_max);
1da177e4
LT		 1381 i += len;
1382 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1383 return count;
1384 }
1385 if (!strcmp(name, "dst_mac")) {
1386 char *v = valstr;
f404e9a6 1387 unsigned char old_dmac[ETH_ALEN];
1da177e4 1388 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1389 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1390
1da177e4 1391 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1392 if (len < 0)
222f1806 1393 return len;
63adc6fb 1394
1da177e4 1395 memset(valstr, 0, sizeof(valstr));
222f1806 1396 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1397 return -EFAULT;
1398 i += len;
1399
222f1806 1400 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1401 if (*v >= '0' && *v <= '9') {
1402 *m *= 16;
1403 *m += *v - '0';
1404 }
1405 if (*v >= 'A' && *v <= 'F') {
1406 *m *= 16;
1407 *m += *v - 'A' + 10;
1408 }
1409 if (*v >= 'a' && *v <= 'f') {
1410 *m *= 16;
1411 *m += *v - 'a' + 10;
1412 }
1413 if (*v == ':') {
1414 m++;
1415 *m = 0;
1416 }
1417 }
1418
1419 /* Set up Dest MAC */
f404e9a6
KK		 1420 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1421 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1422
1da177e4
LT		 1423 sprintf(pg_result, "OK: dstmac");
1424 return count;
1425 }
1426 if (!strcmp(name, "src_mac")) {
1427 char *v = valstr;
ce5d0b47 1428 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1429 unsigned char *m = pkt_dev->src_mac;
1430
ce5d0b47
AR		 1431 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1432
1da177e4 1433 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1434 if (len < 0)
222f1806 1435 return len;
63adc6fb 1436
1da177e4 1437 memset(valstr, 0, sizeof(valstr));
222f1806 1438 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1439 return -EFAULT;
1440 i += len;
1441
222f1806 1442 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1443 if (*v >= '0' && *v <= '9') {
1444 *m *= 16;
1445 *m += *v - '0';
1446 }
1447 if (*v >= 'A' && *v <= 'F') {
1448 *m *= 16;
1449 *m += *v - 'A' + 10;
1450 }
1451 if (*v >= 'a' && *v <= 'f') {
1452 *m *= 16;
1453 *m += *v - 'a' + 10;
1454 }
1455 if (*v == ':') {
1456 m++;
1457 *m = 0;
1458 }
222f1806 1459 }
1da177e4 1460
ce5d0b47
AR		 1461 /* Set up Src MAC */
1462 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1463 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1464
222f1806 1465 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1466 return count;
1467 }
1468
222f1806
LC		 1469 if (!strcmp(name, "clear_counters")) {
1470 pktgen_clear_counters(pkt_dev);
1471 sprintf(pg_result, "OK: Clearing counters.\n");
1472 return count;
1473 }
1da177e4
LT		 1474
1475 if (!strcmp(name, "flows")) {
1476 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1477 if (len < 0)
222f1806 1478 return len;
63adc6fb 1479
1da177e4
LT		 1480 i += len;
1481 if (value > MAX_CFLOWS)
1482 value = MAX_CFLOWS;
1483
1484 pkt_dev->cflows = value;
1485 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1486 return count;
1487 }
1488
1489 if (!strcmp(name, "flowlen")) {
1490 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1491 if (len < 0)
222f1806 1492 return len;
63adc6fb 1493
1da177e4
LT		 1494 i += len;
1495 pkt_dev->lflow = value;
1496 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1497 return count;
1498 }
222f1806 1499
45b270f8
RO		 1500 if (!strcmp(name, "queue_map_min")) {
1501 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1502 if (len < 0)
45b270f8 1503 return len;
63adc6fb 1504
45b270f8
RO		 1505 i += len;
1506 pkt_dev->queue_map_min = value;
1507 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1508 return count;
1509 }
1510
1511 if (!strcmp(name, "queue_map_max")) {
1512 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1513 if (len < 0)
45b270f8 1514 return len;
63adc6fb 1515
45b270f8
RO		 1516 i += len;
1517 pkt_dev->queue_map_max = value;
1518 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1519 return count;
1520 }
1521
ca6549af 1522 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1523 unsigned n, cnt;
1524
ca6549af 1525 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1526 if (len < 0)
1527 return len;
ca6549af 1528 i += len;
cfcabdcc 1529 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1530 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1531 cnt += sprintf(pg_result + cnt,
1532 "%08x%s", ntohl(pkt_dev->labels[n]),
1533 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1534
1535 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1536 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1537 pkt_dev->svlan_id = 0xffff;
1538
1539 if (debug)
25a8b254 1540 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1541 }
1542 return count;
1543 }
1544
1545 if (!strcmp(name, "vlan_id")) {
1546 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1547 if (len < 0)
34954ddc 1548 return len;
63adc6fb 1549
34954ddc
FF		 1550 i += len;
1551 if (value <= 4095) {
1552 pkt_dev->vlan_id = value; /* turn on VLAN */
1553
1554 if (debug)
25a8b254 1555 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1556
1557 if (debug && pkt_dev->nr_labels)
25a8b254 1558 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1559
1560 pkt_dev->nr_labels = 0; /* turn off MPLS */
1561 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1562 } else {
1563 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1564 pkt_dev->svlan_id = 0xffff;
1565
1566 if (debug)
25a8b254 1567 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1568 }
1569 return count;
1570 }
1571
1572 if (!strcmp(name, "vlan_p")) {
1573 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1574 if (len < 0)
34954ddc 1575 return len;
63adc6fb 1576
34954ddc
FF		 1577 i += len;
1578 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1579 pkt_dev->vlan_p = value;
1580 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1581 } else {
1582 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1583 }
1584 return count;
1585 }
1586
1587 if (!strcmp(name, "vlan_cfi")) {
1588 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1589 if (len < 0)
34954ddc 1590 return len;
63adc6fb 1591
34954ddc
FF		 1592 i += len;
1593 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1594 pkt_dev->vlan_cfi = value;
1595 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1596 } else {
1597 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1598 }
1599 return count;
1600 }
1601
1602 if (!strcmp(name, "svlan_id")) {
1603 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1604 if (len < 0)
34954ddc 1605 return len;
63adc6fb 1606
34954ddc
FF		 1607 i += len;
1608 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1609 pkt_dev->svlan_id = value; /* turn on SVLAN */
1610
1611 if (debug)
25a8b254 1612 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1613
1614 if (debug && pkt_dev->nr_labels)
25a8b254 1615 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1616
1617 pkt_dev->nr_labels = 0; /* turn off MPLS */
1618 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1619 } else {
1620 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1621 pkt_dev->svlan_id = 0xffff;
1622
1623 if (debug)
25a8b254 1624 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1625 }
1626 return count;
1627 }
1628
1629 if (!strcmp(name, "svlan_p")) {
1630 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1631 if (len < 0)
34954ddc 1632 return len;
63adc6fb 1633
34954ddc
FF		 1634 i += len;
1635 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1636 pkt_dev->svlan_p = value;
1637 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1638 } else {
1639 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1640 }
1641 return count;
1642 }
1643
1644 if (!strcmp(name, "svlan_cfi")) {
1645 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1646 if (len < 0)
34954ddc 1647 return len;
63adc6fb 1648
34954ddc
FF		 1649 i += len;
1650 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1651 pkt_dev->svlan_cfi = value;
1652 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1653 } else {
1654 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1655 }
ca6549af
SW		 1656 return count;
1657 }
1658
1ca7768c
FF		 1659 if (!strcmp(name, "tos")) {
1660 __u32 tmp_value = 0;
1661 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1662 if (len < 0)
1ca7768c 1663 return len;
63adc6fb 1664
1ca7768c
FF		 1665 i += len;
1666 if (len == 2) {
1667 pkt_dev->tos = tmp_value;
1668 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1669 } else {
1670 sprintf(pg_result, "ERROR: tos must be 00-ff");
1671 }
1672 return count;
1673 }
1674
1675 if (!strcmp(name, "traffic_class")) {
1676 __u32 tmp_value = 0;
1677 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1678 if (len < 0)
1ca7768c 1679 return len;
63adc6fb 1680
1ca7768c
FF		 1681 i += len;
1682 if (len == 2) {
1683 pkt_dev->traffic_class = tmp_value;
1684 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1685 } else {
1686 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1687 }
1688 return count;
1689 }
1690
1da177e4
LT		 1691 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1692 return -EINVAL;
1693}
1694
d50a6b56 1695static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1696{
d50a6b56
SH		 1697 return single_open(file, pktgen_if_show, PDE(inode)->data);
1698}
1da177e4 1699
9a32144e 1700static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1701 .owner = THIS_MODULE,
1702 .open = pktgen_if_open,
1703 .read = seq_read,
1704 .llseek = seq_lseek,
1705 .write = pktgen_if_write,
1706 .release = single_release,
d50a6b56 1707};
1da177e4 1708
d50a6b56
SH		 1709static int pktgen_thread_show(struct seq_file *seq, void *v)
1710{
222f1806 1711 struct pktgen_thread *t = seq->private;
648fda74 1712 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1713
1714 BUG_ON(!t);
1da177e4 1715
222f1806 1716 seq_printf(seq, "Running: ");
1da177e4 1717
222f1806 1718 if_lock(t);
c26a8016 1719 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1720 if (pkt_dev->running)
593f63b0 1721 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1722
222f1806
LC		 1723 seq_printf(seq, "\nStopped: ");
1724
c26a8016 1725 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1726 if (!pkt_dev->running)
593f63b0 1727 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1728
1729 if (t->result[0])
d50a6b56 1730 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1731 else
d50a6b56 1732 seq_printf(seq, "\nResult: NA\n");
1da177e4 1733
222f1806 1734 if_unlock(t);
1da177e4 1735
d50a6b56 1736 return 0;
1da177e4
LT		 1737}
1738
d50a6b56 1739static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1740 const char __user * user_buffer,
1741 size_t count, loff_t * offset)
1da177e4 1742{
222f1806
LC		 1743 struct seq_file *seq = (struct seq_file *)file->private_data;
1744 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1745 int i = 0, max, len, ret;
1746 char name[40];
222f1806 1747 char *pg_result;
d50a6b56 1748
1da177e4 1749 if (count < 1) {
222f1806 1750 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1751 return -EINVAL;
1752 }
d50a6b56 1753
1da177e4 1754 max = count - i;
222f1806
LC		 1755 len = count_trail_chars(&user_buffer[i], max);
1756 if (len < 0)
d50a6b56
SH		 1757 return len;
1758
1da177e4 1759 i += len;
d50a6b56 1760
1da177e4
LT		 1761 /* Read variable name */
1762
1763 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1764 if (len < 0)
d50a6b56 1765 return len;
222f1806 1766
1da177e4
LT		 1767 memset(name, 0, sizeof(name));
1768 if (copy_from_user(name, &user_buffer[i], len))
1769 return -EFAULT;
1770 i += len;
d50a6b56 1771
222f1806 1772 max = count - i;
1da177e4 1773 len = count_trail_chars(&user_buffer[i], max);
222f1806 1774 if (len < 0)
d50a6b56
SH		 1775 return len;
1776
1da177e4
LT		 1777 i += len;
1778
d50a6b56 1779 if (debug)
25a8b254
DM		 1780 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1781 name, (unsigned long)count);
1da177e4 1782
222f1806 1783 if (!t) {
25a8b254 1784 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1785 ret = -EINVAL;
1786 goto out;
1787 }
1788
1789 pg_result = &(t->result[0]);
1790
222f1806
LC		 1791 if (!strcmp(name, "add_device")) {
1792 char f[32];
1793 memset(f, 0, 32);
1da177e4 1794 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1795 if (len < 0) {
1796 ret = len;
1da177e4
LT		 1797 goto out;
1798 }
222f1806 1799 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1800 return -EFAULT;
1801 i += len;
6146e6a4 1802 mutex_lock(&pktgen_thread_lock);
222f1806 1803 pktgen_add_device(t, f);
6146e6a4 1804 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1805 ret = count;
1806 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1807 goto out;
1808 }
1809
222f1806 1810 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1811 mutex_lock(&pktgen_thread_lock);
95ed63f7 1812 t->control |= T_REMDEVALL;
6146e6a4 1813 mutex_unlock(&pktgen_thread_lock);
222f1806 1814 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1815 ret = count;
222f1806 1816 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1817 goto out;
1818 }
1819
222f1806 1820 if (!strcmp(name, "max_before_softirq")) {
b163911f 1821 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1822 ret = count;
1da177e4
LT		 1823 goto out;
1824 }
1825
1826 ret = -EINVAL;
222f1806 1827out:
1da177e4
LT		 1828 return ret;
1829}
1830
d50a6b56 1831static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1832{
d50a6b56 1833 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1834}
1835
9a32144e 1836static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1837 .owner = THIS_MODULE,
1838 .open = pktgen_thread_open,
1839 .read = seq_read,
1840 .llseek = seq_lseek,
1841 .write = pktgen_thread_write,
1842 .release = single_release,
d50a6b56 1843};
1da177e4
LT		 1844
1845/* Think find or remove for NN */
222f1806 1846static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1847{
1848 struct pktgen_thread *t;
1849 struct pktgen_dev *pkt_dev = NULL;
3e984840 1850 bool exact = (remove == FIND);
1da177e4 1851
cdcdbe0b 1852 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1853 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1854 if (pkt_dev) {
222f1806
LC		 1855 if (remove) {
1856 if_lock(t);
1857 pkt_dev->removal_mark = 1;
1858 t->control |= T_REMDEV;
1859 if_unlock(t);
1860 }
1da177e4
LT		 1861 break;
1862 }
1da177e4 1863 }
222f1806 1864 return pkt_dev;
1da177e4
LT		 1865}
1866
95ed63f7
AK		 1867/*
1868 * mark a device for removal
1869 */
39df232f 1870static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1871{
1872 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1873 const int max_tries = 10, msec_per_try = 125;
1874 int i = 0;
95ed63f7 1875
6146e6a4 1876 mutex_lock(&pktgen_thread_lock);
25c4e53a 1877 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1878
222f1806 1879 while (1) {
95ed63f7
AK		 1880
1881 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1882 if (pkt_dev == NULL)
1883 break; /* success */
95ed63f7 1884
6146e6a4 1885 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1886 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1887 "to disappear....\n", ifname);
95ed63f7 1888 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1889 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1890
1891 if (++i >= max_tries) {
25a8b254
DM		 1892 printk(KERN_ERR "pktgen_mark_device: timed out after "
1893 "waiting %d msec for device %s to be removed\n",
222f1806 1894 msec_per_try * i, ifname);
95ed63f7
AK		 1895 break;
1896 }
1897
1898 }
1899
6146e6a4 1900 mutex_unlock(&pktgen_thread_lock);
39df232f 1901}
95ed63f7 1902
39df232f
SH		 1903static void pktgen_change_name(struct net_device *dev)
1904{
1905 struct pktgen_thread *t;
1906
1907 list_for_each_entry(t, &pktgen_threads, th_list) {
1908 struct pktgen_dev *pkt_dev;
1909
1910 list_for_each_entry(pkt_dev, &t->if_list, list) {
1911 if (pkt_dev->odev != dev)
1912 continue;
1913
1914 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1915
2975315b
AD		 1916 pkt_dev->entry = proc_create_data(dev->name, 0600,
1917 pg_proc_dir,
1918 &pktgen_if_fops,
1919 pkt_dev);
39df232f
SH		 1920 if (!pkt_dev->entry)
1921 printk(KERN_ERR "pktgen: can't move proc "
1922 " entry for '%s'\n", dev->name);
1923 break;
1924 }
1925 }
1da177e4
LT		 1926}
1927
222f1806
LC		 1928static int pktgen_device_event(struct notifier_block *unused,
1929 unsigned long event, void *ptr)
1da177e4 1930{
39df232f 1931 struct net_device *dev = ptr;
1da177e4 1932
721499e8 1933 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1934 return NOTIFY_DONE;
1935
1da177e4
LT		 1936 /* It is OK that we do not hold the group lock right now,
1937 * as we run under the RTNL lock.
1938 */
1939
1940 switch (event) {
39df232f
SH		 1941 case NETDEV_CHANGENAME:
1942 pktgen_change_name(dev);
1da177e4 1943 break;
222f1806 1944
1da177e4 1945 case NETDEV_UNREGISTER:
222f1806 1946 pktgen_mark_device(dev->name);
1da177e4 1947 break;
3ff50b79 1948 }
1da177e4
LT		 1949
1950 return NOTIFY_DONE;
1951}
1952
63adc6fb
SH		 1953static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1954 const char *ifname)
e6fce5b9
RO		 1955{
1956 char b[IFNAMSIZ+5];
1957 int i = 0;
1958
63adc6fb
SH		 1959 for (i = 0; ifname[i] != '@'; i++) {
1960 if (i == IFNAMSIZ)
e6fce5b9
RO		 1961 break;
1962
1963 b[i] = ifname[i];
1964 }
1965 b[i] = 0;
1966
1967 return dev_get_by_name(&init_net, b);
1968}
1969
1970
1da177e4
LT		 1971/* Associate pktgen_dev with a device. */
1972
39df232f 1973static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1974{
1da177e4 1975 struct net_device *odev;
39df232f 1976 int err;
1da177e4
LT		 1977
1978 /* Clean old setups */
1da177e4
LT		 1979 if (pkt_dev->odev) {
1980 dev_put(pkt_dev->odev);
222f1806
LC		 1981 pkt_dev->odev = NULL;
1982 }
1da177e4 1983
e6fce5b9 1984 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1985 if (!odev) {
25a8b254 1986 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 1987 return -ENODEV;
1da177e4 1988 }
39df232f 1989
1da177e4 1990 if (odev->type != ARPHRD_ETHER) {
25a8b254 1991 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1992 err = -EINVAL;
1993 } else if (!netif_running(odev)) {
25a8b254 1994 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 1995 err = -ENETDOWN;
1996 } else {
1997 pkt_dev->odev = odev;
1998 return 0;
1da177e4 1999 }
1da177e4 2000
1da177e4 2001 dev_put(odev);
39df232f 2002 return err;
1da177e4
LT		 2003}
2004
2005/* Read pkt_dev from the interface and set up internal pktgen_dev
2006 * structure to have the right information to create/send packets
2007 */
2008static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2009{
64c00d81
AG		 2010 int ntxq;
2011
222f1806 2012 if (!pkt_dev->odev) {
25a8b254
DM		 2013 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
2014 "setup_inject.\n");
222f1806
LC		 2015 sprintf(pkt_dev->result,
2016 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2017 return;
2018 }
2019
64c00d81
AG		 2020 /* make sure that we don't pick a non-existing transmit queue */
2021 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2022
64c00d81
AG		 2023 if (ntxq <= pkt_dev->queue_map_min) {
2024 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 2025 "queue_map_min (zero-based) (%d) exceeds valid range "
2026 "[0 - %d] for (%d) queues on %s, resetting\n",
63adc6fb 2027 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
593f63b0 2028 pkt_dev->odevname);
64c00d81
AG		 2029 pkt_dev->queue_map_min = ntxq - 1;
2030 }
88271660 2031 if (pkt_dev->queue_map_max >= ntxq) {
64c00d81 2032 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 2033 "queue_map_max (zero-based) (%d) exceeds valid range "
2034 "[0 - %d] for (%d) queues on %s, resetting\n",
63adc6fb 2035 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
593f63b0 2036 pkt_dev->odevname);
64c00d81
AG		 2037 pkt_dev->queue_map_max = ntxq - 1;
2038 }
2039
222f1806 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();
63adc6fb
SH		 2076 idev = __in6_dev_get(pkt_dev->odev);
2077 if (idev) {
1da177e4
LT		 2078 struct inet6_ifaddr *ifp;
2079
2080 read_lock_bh(&idev->lock);
222f1806
LC		 2081 for (ifp = idev->addr_list; ifp;
2082 ifp = ifp->if_next) {
f64f9e71
JP		 2083 if (ifp->scope == IFA_LINK &&
2084 !(ifp->flags & IFA_F_TENTATIVE)) {
222f1806
LC		 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
fd29cf72
SH		 2135
2136static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2137{
ef87979c 2138 ktime_t start_time, end_time;
417bc4b8 2139 s64 remaining;
2bc481cf
SH		 2140 struct hrtimer_sleeper t;
2141
2142 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2143 hrtimer_set_expires(&t.timer, spin_until);
2144
2145 remaining = ktime_to_us(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2146 if (remaining <= 0) {
2147 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2148 return;
417bc4b8 2149 }
2bc481cf 2150
ef87979c 2151 start_time = ktime_now();
2bc481cf
SH		 2152 if (remaining < 100)
2153 udelay(remaining); /* really small just spin */
2154 else {
2155 /* see do_nanosleep */
2156 hrtimer_init_sleeper(&t, current);
2157 do {
2158 set_current_state(TASK_INTERRUPTIBLE);
2159 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2160 if (!hrtimer_active(&t.timer))
2161 t.task = NULL;
2162
2163 if (likely(t.task))
1da177e4 2164 schedule();
1da177e4 2165
2bc481cf
SH		 2166 hrtimer_cancel(&t.timer);
2167 } while (t.task && pkt_dev->running && !signal_pending(current));
2168 __set_current_state(TASK_RUNNING);
1da177e4 2169 }
ef87979c
SH		 2170 end_time = ktime_now();
2171
2172 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2173 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2174}
2175
16dab72f
JHS		 2176static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2177{
a553e4a6 2178 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2179 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2180 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2181 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2182}
2183
648fda74 2184static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2185{
648fda74 2186 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2187}
2188
2189static inline int f_pick(struct pktgen_dev *pkt_dev)
2190{
2191 int flow = pkt_dev->curfl;
2192
2193 if (pkt_dev->flags & F_FLOW_SEQ) {
2194 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2195 /* reset time */
2196 pkt_dev->flows[flow].count = 0;
1211a645 2197 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2198 pkt_dev->curfl += 1;
2199 if (pkt_dev->curfl >= pkt_dev->cflows)
2200 pkt_dev->curfl = 0; /*reset */
2201 }
2202 } else {
2203 flow = random32() % pkt_dev->cflows;
1211a645 2204 pkt_dev->curfl = flow;
007a531b 2205
1211a645 2206 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2207 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2208 pkt_dev->flows[flow].flags = 0;
2209 }
007a531b
JHS		 2210 }
2211
2212 return pkt_dev->curfl;
2213}
2214
a553e4a6
JHS		 2215
2216#ifdef CONFIG_XFRM
2217/* If there was already an IPSEC SA, we keep it as is, else
2218 * we go look for it ...
2219*/
bd55775c 2220#define DUMMY_MARK 0
fea1ab0f 2221static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2222{
2223 struct xfrm_state *x = pkt_dev->flows[flow].x;
2224 if (!x) {
2225 /*slow path: we dont already have xfrm_state*/
bd55775c 2226 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2227 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2228 (xfrm_address_t *)&pkt_dev->cur_saddr,
2229 AF_INET,
2230 pkt_dev->ipsmode,
2231 pkt_dev->ipsproto, 0);
2232 if (x) {
2233 pkt_dev->flows[flow].x = x;
2234 set_pkt_overhead(pkt_dev);
63adc6fb 2235 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2236 }
2237
2238 }
2239}
2240#endif
fd2ea0a7
DM		 2241static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2242{
e6fce5b9
RO		 2243
2244 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2245 pkt_dev->cur_queue_map = smp_processor_id();
2246
896a7cf8 2247 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2248 __u16 t;
2249 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2250 t = random32() %
2251 (pkt_dev->queue_map_max -
2252 pkt_dev->queue_map_min + 1)
2253 + pkt_dev->queue_map_min;
2254 } else {
2255 t = pkt_dev->cur_queue_map + 1;
2256 if (t > pkt_dev->queue_map_max)
2257 t = pkt_dev->queue_map_min;
2258 }
2259 pkt_dev->cur_queue_map = t;
2260 }
bfdbc0ac 2261 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2262}
2263
1da177e4
LT		 2264/* Increment/randomize headers according to flags and current values
2265 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2266 */
222f1806
LC		 2267static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2268{
2269 __u32 imn;
2270 __u32 imx;
2271 int flow = 0;
1da177e4 2272
007a531b
JHS		 2273 if (pkt_dev->cflows)
2274 flow = f_pick(pkt_dev);
1da177e4
LT		 2275
2276 /* Deal with source MAC */
222f1806
LC		 2277 if (pkt_dev->src_mac_count > 1) {
2278 __u32 mc;
2279 __u32 tmp;
2280
2281 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2282 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2283 else {
2284 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2285 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2286 pkt_dev->src_mac_count)
2287 pkt_dev->cur_src_mac_offset = 0;
2288 }
2289
2290 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2291 pkt_dev->hh[11] = tmp;
2292 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2293 pkt_dev->hh[10] = tmp;
2294 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2295 pkt_dev->hh[9] = tmp;
2296 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2297 pkt_dev->hh[8] = tmp;
2298 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2299 pkt_dev->hh[7] = tmp;
2300 }
2301
2302 /* Deal with Destination MAC */
2303 if (pkt_dev->dst_mac_count > 1) {
2304 __u32 mc;
2305 __u32 tmp;
2306
2307 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2308 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2309
2310 else {
2311 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2312 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2313 pkt_dev->dst_mac_count) {
2314 pkt_dev->cur_dst_mac_offset = 0;
2315 }
2316 }
2317
2318 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2319 pkt_dev->hh[5] = tmp;
2320 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2321 pkt_dev->hh[4] = tmp;
2322 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2323 pkt_dev->hh[3] = tmp;
2324 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2325 pkt_dev->hh[2] = tmp;
2326 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2327 pkt_dev->hh[1] = tmp;
2328 }
2329
ca6549af
SW		 2330 if (pkt_dev->flags & F_MPLS_RND) {
2331 unsigned i;
e71a4783 2332 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2333 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2334 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2335 ((__force __be32)random32() &
ca6549af
SW		 2336 htonl(0x000fffff));
2337 }
2338
34954ddc 2339 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2340 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2341 }
2342
2343 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2344 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2345 }
2346
222f1806
LC		 2347 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2348 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2349 pkt_dev->cur_udp_src = random32() %
2350 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2351 + pkt_dev->udp_src_min;
222f1806
LC		 2352
2353 else {
1da177e4
LT		 2354 pkt_dev->cur_udp_src++;
2355 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2356 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2357 }
2358 }
2359
2360 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2361 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2362 pkt_dev->cur_udp_dst = random32() %
2363 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2364 + pkt_dev->udp_dst_min;
222f1806 2365 } else {
1da177e4 2366 pkt_dev->cur_udp_dst++;
222f1806 2367 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2368 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2369 }
2370 }
1da177e4
LT		 2371
2372 if (!(pkt_dev->flags & F_IPV6)) {
2373
63adc6fb
SH		 2374 imn = ntohl(pkt_dev->saddr_min);
2375 imx = ntohl(pkt_dev->saddr_max);
2376 if (imn < imx) {
1da177e4 2377 __u32 t;
222f1806 2378 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2379 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2380 else {
2381 t = ntohl(pkt_dev->cur_saddr);
2382 t++;
63adc6fb 2383 if (t > imx)
1da177e4 2384 t = imn;
63adc6fb 2385
1da177e4
LT		 2386 }
2387 pkt_dev->cur_saddr = htonl(t);
2388 }
222f1806 2389
007a531b 2390 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2391 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2392 } else {
252e3346
AV		 2393 imn = ntohl(pkt_dev->daddr_min);
2394 imx = ntohl(pkt_dev->daddr_max);
2395 if (imn < imx) {
1da177e4 2396 __u32 t;
252e3346 2397 __be32 s;
1da177e4
LT		 2398 if (pkt_dev->flags & F_IPDST_RND) {
2399
5fa6fc76 2400 t = random32() % (imx - imn) + imn;
252e3346 2401 s = htonl(t);
1da177e4 2402
21cf2253
JP		 2403 while (ipv4_is_loopback(s) ||
2404 ipv4_is_multicast(s) ||
1e637c74 2405 ipv4_is_lbcast(s) ||
21cf2253
JP		 2406 ipv4_is_zeronet(s) ||
2407 ipv4_is_local_multicast(s)) {
5fa6fc76 2408 t = random32() % (imx - imn) + imn;
252e3346 2409 s = htonl(t);
1da177e4 2410 }
252e3346
AV		 2411 pkt_dev->cur_daddr = s;
2412 } else {
1da177e4
LT		 2413 t = ntohl(pkt_dev->cur_daddr);
2414 t++;
2415 if (t > imx) {
2416 t = imn;
2417 }
2418 pkt_dev->cur_daddr = htonl(t);
2419 }
2420 }
222f1806 2421 if (pkt_dev->cflows) {
007a531b 2422 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2423 pkt_dev->flows[flow].cur_daddr =
2424 pkt_dev->cur_daddr;
a553e4a6
JHS		 2425#ifdef CONFIG_XFRM
2426 if (pkt_dev->flags & F_IPSEC_ON)
2427 get_ipsec_sa(pkt_dev, flow);
2428#endif
1da177e4
LT		 2429 pkt_dev->nflows++;
2430 }
2431 }
222f1806
LC		 2432 } else { /* IPV6 * */
2433
2434 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2435 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2436 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2437 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2438 else {
2439 int i;
2440
2441 /* Only random destinations yet */
2442
222f1806 2443 for (i = 0; i < 4; i++) {
1da177e4 2444 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2445 (((__force __be32)random32() |
222f1806
LC		 2446 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2447 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2448 }
222f1806 2449 }
1da177e4
LT		 2450 }
2451
222f1806
LC		 2452 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2453 __u32 t;
2454 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2455 t = random32() %
2456 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2457 + pkt_dev->min_pkt_size;
222f1806 2458 } else {
1da177e4 2459 t = pkt_dev->cur_pkt_size + 1;
222f1806 2460 if (t > pkt_dev->max_pkt_size)
1da177e4 2461 t = pkt_dev->min_pkt_size;
222f1806
LC		 2462 }
2463 pkt_dev->cur_pkt_size = t;
2464 }
1da177e4 2465
fd2ea0a7 2466 set_cur_queue_map(pkt_dev);
45b270f8 2467
1da177e4
LT		 2468 pkt_dev->flows[flow].count++;
2469}
2470
a553e4a6
JHS		 2471
2472#ifdef CONFIG_XFRM
2473static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2474{
2475 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2476 int err = 0;
2477 struct iphdr *iph;
2478
2479 if (!x)
2480 return 0;
2481 /* XXX: we dont support tunnel mode for now until
2482 * we resolve the dst issue */
2483 if (x->props.mode != XFRM_MODE_TRANSPORT)
2484 return 0;
2485
2486 spin_lock(&x->lock);
2487 iph = ip_hdr(skb);
2488
13996378 2489 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2490 if (err)
2491 goto error;
2492 err = x->type->output(x, skb);
2493 if (err)
2494 goto error;
2495
63adc6fb 2496 x->curlft.bytes += skb->len;
a553e4a6 2497 x->curlft.packets++;
a553e4a6
JHS		 2498error:
2499 spin_unlock(&x->lock);
2500 return err;
2501}
2502
475ac1e4 2503static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2504{
2505 if (pkt_dev->cflows) {
2506 /* let go of the SAs if we have them */
2507 int i = 0;
5b5f792a 2508 for (; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2509 struct xfrm_state *x = pkt_dev->flows[i].x;
2510 if (x) {
2511 xfrm_state_put(x);
2512 pkt_dev->flows[i].x = NULL;
2513 }
2514 }
2515 }
2516}
2517
475ac1e4 2518static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2519 struct sk_buff *skb, __be16 protocol)
2520{
2521 if (pkt_dev->flags & F_IPSEC_ON) {
2522 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2523 int nhead = 0;
2524 if (x) {
2525 int ret;
2526 __u8 *eth;
2527 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2528 if (nhead > 0) {
a553e4a6
JHS		 2529 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2530 if (ret < 0) {
25a8b254 2531 printk(KERN_ERR "Error expanding "
63adc6fb 2532 "ipsec packet %d\n", ret);
b4bb4ac8 2533 goto err;
a553e4a6
JHS		 2534 }
2535 }
2536
2537 /* ipsec is not expecting ll header */
2538 skb_pull(skb, ETH_HLEN);
2539 ret = pktgen_output_ipsec(skb, pkt_dev);
2540 if (ret) {
25a8b254 2541 printk(KERN_ERR "Error creating ipsec "
63adc6fb 2542 "packet %d\n", ret);
b4bb4ac8 2543 goto err;
a553e4a6
JHS		 2544 }
2545 /* restore ll */
2546 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2547 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2548 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2549 }
2550 }
2551 return 1;
b4bb4ac8
IJ		 2552err:
2553 kfree_skb(skb);
2554 return 0;
a553e4a6
JHS		 2555}
2556#endif
2557
ca6549af
SW		 2558static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2559{
2560 unsigned i;
63adc6fb 2561 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2562 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2563
ca6549af
SW		 2564 mpls--;
2565 *mpls |= MPLS_STACK_BOTTOM;
2566}
2567
0f37c605
AV		 2568static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2569 unsigned int prio)
2570{
2571 return htons(id | (cfi << 12) | (prio << 13));
2572}
2573
222f1806
LC		 2574static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2575 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2576{
2577 struct sk_buff *skb = NULL;
2578 __u8 *eth;
2579 struct udphdr *udph;
2580 int datalen, iplen;
2581 struct iphdr *iph;
222f1806 2582 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2583 __be16 protocol = htons(ETH_P_IP);
ca6549af 2584 __be32 *mpls;
34954ddc
FF		 2585 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2586 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2587 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2588 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2589 u16 queue_map;
ca6549af
SW		 2590
2591 if (pkt_dev->nr_labels)
d5f1ce9a 2592 protocol = htons(ETH_P_MPLS_UC);
222f1806 2593
34954ddc 2594 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2595 protocol = htons(ETH_P_8021Q);
34954ddc 2596
64053bee
RO		 2597 /* Update any of the values, used when we're incrementing various
2598 * fields.
2599 */
fd2ea0a7 2600 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2601 mod_cur_headers(pkt_dev);
2602
7ac5459e 2603 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2604
2605 if (pkt_dev->flags & F_NODE) {
2606 int node;
2607
2608 if (pkt_dev->node >= 0)
2609 node = pkt_dev->node;
2610 else
2611 node = numa_node_id();
2612
2613 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2614 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2615 if (likely(skb)) {
2616 skb_reserve(skb, NET_SKB_PAD);
2617 skb->dev = odev;
2618 }
2619 }
2620 else
2621 skb = __netdev_alloc_skb(odev,
2622 pkt_dev->cur_pkt_size + 64
2623 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2624
1da177e4
LT		 2625 if (!skb) {
2626 sprintf(pkt_dev->result, "No memory");
2627 return NULL;
2628 }
2629
7ac5459e 2630 skb_reserve(skb, datalen);
1da177e4
LT		 2631
2632 /* Reserve for ethernet and IP header */
2633 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2634 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2635 if (pkt_dev->nr_labels)
2636 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2637
2638 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2639 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2640 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2641 *svlan_tci = build_tci(pkt_dev->svlan_id,
2642 pkt_dev->svlan_cfi,
2643 pkt_dev->svlan_p);
34954ddc 2644 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2645 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2646 }
2647 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2648 *vlan_tci = build_tci(pkt_dev->vlan_id,
2649 pkt_dev->vlan_cfi,
2650 pkt_dev->vlan_p);
34954ddc 2651 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2652 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2653 }
2654
27a884dc 2655 skb->network_header = skb->tail;
b0e380b1 2656 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2657 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2658 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2659 iph = ip_hdr(skb);
2660 udph = udp_hdr(skb);
1da177e4 2661
1da177e4 2662 memcpy(eth, pkt_dev->hh, 12);
252e3346 2663 *(__be16 *) & eth[12] = protocol;
1da177e4 2664
ca6549af
SW		 2665 /* Eth + IPh + UDPh + mpls */
2666 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2667 pkt_dev->pkt_overhead;
222f1806 2668 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2669 datalen = sizeof(struct pktgen_hdr);
222f1806 2670
1da177e4
LT		 2671 udph->source = htons(pkt_dev->cur_udp_src);
2672 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2673 udph->len = htons(datalen + 8); /* DATA + udphdr */
2674 udph->check = 0; /* No checksum */
1da177e4
LT		 2675
2676 iph->ihl = 5;
2677 iph->version = 4;
2678 iph->ttl = 32;
1ca7768c 2679 iph->tos = pkt_dev->tos;
222f1806 2680 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2681 iph->saddr = pkt_dev->cur_saddr;
2682 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2683 iph->id = htons(pkt_dev->ip_id);
2684 pkt_dev->ip_id++;
1da177e4
LT		 2685 iph->frag_off = 0;
2686 iplen = 20 + 8 + datalen;
2687 iph->tot_len = htons(iplen);
2688 iph->check = 0;
222f1806 2689 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2690 skb->protocol = protocol;
b0e380b1 2691 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2692 pkt_dev->pkt_overhead);
1da177e4
LT		 2693 skb->dev = odev;
2694 skb->pkt_type = PACKET_HOST;
2695
66ed1e5e 2696 if (pkt_dev->nfrags <= 0) {
222f1806 2697 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
66ed1e5e
ED		 2698 memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr));
2699 } else {
1da177e4 2700 int frags = pkt_dev->nfrags;
66ed1e5e 2701 int i, len;
1da177e4 2702
222f1806
LC		 2703 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2704
1da177e4
LT		 2705 if (frags > MAX_SKB_FRAGS)
2706 frags = MAX_SKB_FRAGS;
222f1806 2707 if (datalen > frags * PAGE_SIZE) {
66ed1e5e
ED		 2708 len = datalen - frags * PAGE_SIZE;
2709 memset(skb_put(skb, len), 0, len);
222f1806 2710 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2711 }
2712
2713 i = 0;
2714 while (datalen > 0) {
66ed1e5e 2715 struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
1da177e4
LT		 2716 skb_shinfo(skb)->frags[i].page = page;
2717 skb_shinfo(skb)->frags[i].page_offset = 0;
2718 skb_shinfo(skb)->frags[i].size =
222f1806 2719 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2720 datalen -= skb_shinfo(skb)->frags[i].size;
2721 skb->len += skb_shinfo(skb)->frags[i].size;
2722 skb->data_len += skb_shinfo(skb)->frags[i].size;
2723 i++;
2724 skb_shinfo(skb)->nr_frags = i;
2725 }
2726
2727 while (i < frags) {
2728 int rem;
2729
2730 if (i == 0)
2731 break;
2732
2733 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2734 if (rem == 0)
2735 break;
2736
2737 skb_shinfo(skb)->frags[i - 1].size -= rem;
2738
222f1806
LC		 2739 skb_shinfo(skb)->frags[i] =
2740 skb_shinfo(skb)->frags[i - 1];
1da177e4 2741 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2742 skb_shinfo(skb)->frags[i].page =
2743 skb_shinfo(skb)->frags[i - 1].page;
2744 skb_shinfo(skb)->frags[i].page_offset +=
2745 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2746 skb_shinfo(skb)->frags[i].size = rem;
2747 i++;
2748 skb_shinfo(skb)->nr_frags = i;
2749 }
2750 }
2751
63adc6fb
SH		 2752 /* Stamp the time, and sequence number,
2753 * convert them to network byte order
2754 */
222f1806
LC		 2755 if (pgh) {
2756 struct timeval timestamp;
2757
2758 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2759 pgh->seq_num = htonl(pkt_dev->seq_num);
2760
2761 do_gettimeofday(&timestamp);
2762 pgh->tv_sec = htonl(timestamp.tv_sec);
2763 pgh->tv_usec = htonl(timestamp.tv_usec);
2764 }
1da177e4 2765
a553e4a6
JHS		 2766#ifdef CONFIG_XFRM
2767 if (!process_ipsec(pkt_dev, skb, protocol))
2768 return NULL;
2769#endif
2770
1da177e4
LT		 2771 return skb;
2772}
2773
2774/*
4ec93edb 2775 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2776 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2777 *
4ec93edb 2778 * Slightly modified for kernel.
1da177e4
LT		 2779 * Should be candidate for net/ipv4/utils.c
2780 * --ro
2781 */
2782
222f1806 2783static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2784{
2785 unsigned int i;
222f1806 2786 unsigned int len = 0;
1da177e4
LT		 2787 unsigned long u;
2788 char suffix[16];
222f1806
LC		 2789 unsigned int prefixlen = 0;
2790 unsigned int suffixlen = 0;
252e3346 2791 __be32 tmp;
cfcabdcc 2792 char *pos;
1da177e4 2793
222f1806
LC		 2794 for (i = 0; i < 16; i++)
2795 ip[i] = 0;
1da177e4
LT		 2796
2797 for (;;) {
2798 if (*s == ':') {
2799 len++;
222f1806
LC		 2800 if (s[1] == ':') { /* Found "::", skip to part 2 */
2801 s += 2;
1da177e4
LT		 2802 len++;
2803 break;
2804 }
2805 s++;
2806 }
1da177e4 2807
cfcabdcc
SH		 2808 u = simple_strtoul(s, &pos, 16);
2809 i = pos - s;
222f1806
LC		 2810 if (!i)
2811 return 0;
2812 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2813
2814 /* the last 4 bytes may be written as IPv4 address */
2815
2816 tmp = in_aton(s);
222f1806
LC		 2817 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2818 return i + len;
1da177e4
LT		 2819 }
2820 ip[prefixlen++] = (u >> 8);
2821 ip[prefixlen++] = (u & 255);
222f1806
LC		 2822 s += i;
2823 len += i;
2824 if (prefixlen == 16)
1da177e4
LT		 2825 return len;
2826 }
2827
2828/* part 2, after "::" */
2829 for (;;) {
2830 if (*s == ':') {
222f1806 2831 if (suffixlen == 0)
1da177e4
LT		 2832 break;
2833 s++;
2834 len++;
222f1806 2835 } else if (suffixlen != 0)
1da177e4 2836 break;
cfcabdcc
SH		 2837
2838 u = simple_strtol(s, &pos, 16);
2839 i = pos - s;
1da177e4 2840 if (!i) {
222f1806
LC		 2841 if (*s)
2842 len--;
1da177e4
LT		 2843 break;
2844 }
222f1806 2845 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2846 tmp = in_aton(s);
222f1806
LC		 2847 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2848 sizeof(tmp));
2849 suffixlen += 4;
2850 len += strlen(s);
1da177e4
LT		 2851 break;
2852 }
2853 suffix[suffixlen++] = (u >> 8);
2854 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2855 s += i;
2856 len += i;
2857 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2858 break;
2859 }
222f1806
LC		 2860 for (i = 0; i < suffixlen; i++)
2861 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2862 return len;
2863}
2864
222f1806
LC		 2865static char tohex(char hexdigit)
2866{
2867 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2868}
2869
222f1806
LC		 2870static int fmt_xlong(char *s, unsigned int i)
2871{
2872 char *bak = s;
2873 *s = tohex((i >> 12) & 0xf);
2874 if (s != bak || *s != '0')
2875 ++s;
2876 *s = tohex((i >> 8) & 0xf);
2877 if (s != bak || *s != '0')
2878 ++s;
2879 *s = tohex((i >> 4) & 0xf);
2880 if (s != bak || *s != '0')
2881 ++s;
2882 *s = tohex(i & 0xf);
2883 return s - bak + 1;
1da177e4
LT		 2884}
2885
222f1806
LC		 2886static unsigned int fmt_ip6(char *s, const char ip[16])
2887{
1da177e4
LT		 2888 unsigned int len;
2889 unsigned int i;
2890 unsigned int temp;
2891 unsigned int compressing;
2892 int j;
2893
222f1806
LC		 2894 len = 0;
2895 compressing = 0;
2896 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2897
2898#ifdef V4MAPPEDPREFIX
222f1806
LC		 2899 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2900 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2901 temp = strlen(s);
2902 return len + temp;
1da177e4
LT		 2903 }
2904#endif
222f1806
LC		 2905 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2906 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2907 if (temp == 0) {
2908 if (!compressing) {
222f1806
LC		 2909 compressing = 1;
2910 if (j == 0) {
2911 *s++ = ':';
2912 ++len;
1da177e4
LT		 2913 }
2914 }
2915 } else {
2916 if (compressing) {
222f1806
LC		 2917 compressing = 0;
2918 *s++ = ':';
2919 ++len;
1da177e4 2920 }
222f1806
LC		 2921 i = fmt_xlong(s, temp);
2922 len += i;
2923 s += i;
2924 if (j < 14) {
1da177e4
LT		 2925 *s++ = ':';
2926 ++len;
2927 }
2928 }
2929 }
2930 if (compressing) {
222f1806
LC		 2931 *s++ = ':';
2932 ++len;
1da177e4 2933 }
222f1806 2934 *s = 0;
1da177e4
LT		 2935 return len;
2936}
2937
222f1806
LC		 2938static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2939 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2940{
2941 struct sk_buff *skb = NULL;
2942 __u8 *eth;
2943 struct udphdr *udph;
2944 int datalen;
2945 struct ipv6hdr *iph;
222f1806 2946 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2947 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2948 __be32 *mpls;
34954ddc
FF		 2949 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2950 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2951 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2952 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2953 u16 queue_map;
ca6549af
SW		 2954
2955 if (pkt_dev->nr_labels)
d5f1ce9a 2956 protocol = htons(ETH_P_MPLS_UC);
64053bee 2957
34954ddc 2958 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2959 protocol = htons(ETH_P_8021Q);
34954ddc 2960
64053bee
RO		 2961 /* Update any of the values, used when we're incrementing various
2962 * fields.
2963 */
fd2ea0a7 2964 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2965 mod_cur_headers(pkt_dev);
2966
e470757d
SH		 2967 skb = __netdev_alloc_skb(odev,
2968 pkt_dev->cur_pkt_size + 64
2969 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2970 if (!skb) {
2971 sprintf(pkt_dev->result, "No memory");
2972 return NULL;
2973 }
2974
2975 skb_reserve(skb, 16);
2976
2977 /* Reserve for ethernet and IP header */
2978 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2979 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2980 if (pkt_dev->nr_labels)
2981 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2982
2983 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2984 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2985 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2986 *svlan_tci = build_tci(pkt_dev->svlan_id,
2987 pkt_dev->svlan_cfi,
2988 pkt_dev->svlan_p);
34954ddc 2989 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2990 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2991 }
2992 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2993 *vlan_tci = build_tci(pkt_dev->vlan_id,
2994 pkt_dev->vlan_cfi,
2995 pkt_dev->vlan_p);
34954ddc 2996 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2997 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2998 }
2999
27a884dc 3000 skb->network_header = skb->tail;
b0e380b1 3001 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 3002 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 3003 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 3004 iph = ipv6_hdr(skb);
3005 udph = udp_hdr(skb);
1da177e4 3006
1da177e4 3007 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 3008 *(__be16 *) &eth[12] = protocol;
64053bee 3009
ca6549af
SW		 3010 /* Eth + IPh + UDPh + mpls */
3011 datalen = pkt_dev->cur_pkt_size - 14 -
3012 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 3013 pkt_dev->pkt_overhead;
1da177e4 3014
222f1806 3015 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 3016 datalen = sizeof(struct pktgen_hdr);
3017 if (net_ratelimit())
222f1806
LC		 3018 printk(KERN_INFO "pktgen: increased datalen to %d\n",
3019 datalen);
1da177e4
LT		 3020 }
3021
3022 udph->source = htons(pkt_dev->cur_udp_src);
3023 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 3024 udph->len = htons(datalen + sizeof(struct udphdr));
3025 udph->check = 0; /* No checksum */
1da177e4 3026
d5f1ce9a 3027 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 3028
1ca7768c
FF		 3029 if (pkt_dev->traffic_class) {
3030 /* Version + traffic class + flow (0) */
252e3346 3031 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 3032 }
3033
1da177e4
LT		 3034 iph->hop_limit = 32;
3035
3036 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
3037 iph->nexthdr = IPPROTO_UDP;
3038
3039 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
3040 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
3041
b0e380b1 3042 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 3043 pkt_dev->pkt_overhead);
ca6549af 3044 skb->protocol = protocol;
1da177e4
LT		 3045 skb->dev = odev;
3046 skb->pkt_type = PACKET_HOST;
3047
222f1806
LC		 3048 if (pkt_dev->nfrags <= 0)
3049 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 3050 else {
3051 int frags = pkt_dev->nfrags;
3052 int i;
3053
222f1806
LC		 3054 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
3055
1da177e4
LT		 3056 if (frags > MAX_SKB_FRAGS)
3057 frags = MAX_SKB_FRAGS;
222f1806
LC		 3058 if (datalen > frags * PAGE_SIZE) {
3059 skb_put(skb, datalen - frags * PAGE_SIZE);
3060 datalen = frags * PAGE_SIZE;
1da177e4
LT		 3061 }
3062
3063 i = 0;
3064 while (datalen > 0) {
3065 struct page *page = alloc_pages(GFP_KERNEL, 0);
3066 skb_shinfo(skb)->frags[i].page = page;
3067 skb_shinfo(skb)->frags[i].page_offset = 0;
3068 skb_shinfo(skb)->frags[i].size =
222f1806 3069 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 3070 datalen -= skb_shinfo(skb)->frags[i].size;
3071 skb->len += skb_shinfo(skb)->frags[i].size;
3072 skb->data_len += skb_shinfo(skb)->frags[i].size;
3073 i++;
3074 skb_shinfo(skb)->nr_frags = i;
3075 }
3076
3077 while (i < frags) {
3078 int rem;
3079
3080 if (i == 0)
3081 break;
3082
3083 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
3084 if (rem == 0)
3085 break;
3086
3087 skb_shinfo(skb)->frags[i - 1].size -= rem;
3088
222f1806
LC		 3089 skb_shinfo(skb)->frags[i] =
3090 skb_shinfo(skb)->frags[i - 1];
1da177e4 3091 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3092 skb_shinfo(skb)->frags[i].page =
3093 skb_shinfo(skb)->frags[i - 1].page;
3094 skb_shinfo(skb)->frags[i].page_offset +=
3095 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3096 skb_shinfo(skb)->frags[i].size = rem;
3097 i++;
3098 skb_shinfo(skb)->nr_frags = i;
3099 }
3100 }
3101
63adc6fb
SH		 3102 /* Stamp the time, and sequence number,
3103 * convert them to network byte order
3104 * should we update cloned packets too ?
3105 */
222f1806
LC		 3106 if (pgh) {
3107 struct timeval timestamp;
3108
3109 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3110 pgh->seq_num = htonl(pkt_dev->seq_num);
3111
3112 do_gettimeofday(&timestamp);
3113 pgh->tv_sec = htonl(timestamp.tv_sec);
3114 pgh->tv_usec = htonl(timestamp.tv_usec);
3115 }
34954ddc 3116 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3117
1da177e4
LT		 3118 return skb;
3119}
3120
475ac1e4
SH		 3121static struct sk_buff *fill_packet(struct net_device *odev,
3122 struct pktgen_dev *pkt_dev)
1da177e4 3123{
222f1806 3124 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3125 return fill_packet_ipv6(odev, pkt_dev);
3126 else
3127 return fill_packet_ipv4(odev, pkt_dev);
3128}
3129
222f1806 3130static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3131{
222f1806
LC		 3132 pkt_dev->seq_num = 1;
3133 pkt_dev->idle_acc = 0;
1da177e4 3134 pkt_dev->sofar = 0;
222f1806
LC		 3135 pkt_dev->tx_bytes = 0;
3136 pkt_dev->errors = 0;
1da177e4
LT		 3137}
3138
3139/* Set up structure for sending pkts, clear counters */
3140
3141static void pktgen_run(struct pktgen_thread *t)
3142{
c26a8016 3143 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3144 int started = 0;
3145
25c4e53a 3146 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 3147
3148 if_lock(t);
c26a8016 3149 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3150
3151 /*
3152 * setup odev and create initial packet.
3153 */
3154 pktgen_setup_inject(pkt_dev);
3155
222f1806 3156 if (pkt_dev->odev) {
1da177e4 3157 pktgen_clear_counters(pkt_dev);
222f1806 3158 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3159 pkt_dev->skb = NULL;
fd29cf72
SH		 3160 pkt_dev->started_at =
3161 pkt_dev->next_tx = ktime_now();
3162
16dab72f 3163 set_pkt_overhead(pkt_dev);
222f1806 3164
1da177e4
LT		 3165 strcpy(pkt_dev->result, "Starting");
3166 started++;
222f1806 3167 } else
1da177e4
LT		 3168 strcpy(pkt_dev->result, "Error starting");
3169 }
3170 if_unlock(t);
222f1806
LC		 3171 if (started)
3172 t->control &= ~(T_STOP);
1da177e4
LT		 3173}
3174
3175static void pktgen_stop_all_threads_ifs(void)
3176{
cdcdbe0b 3177 struct pktgen_thread *t;
1da177e4 3178
25c4e53a 3179 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3180
6146e6a4 3181 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3182
3183 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3184 t->control |= T_STOP;
cdcdbe0b 3185
6146e6a4 3186 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3187}
3188
648fda74 3189static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3190{
648fda74 3191 const struct pktgen_dev *pkt_dev;
1da177e4 3192
c26a8016 3193 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3194 if (pkt_dev->running)
3195 return 1;
3196 return 0;
1da177e4
LT		 3197}
3198
222f1806 3199static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3200{
222f1806 3201 if_lock(t);
1da177e4 3202
222f1806 3203 while (thread_is_running(t)) {
1da177e4 3204
222f1806 3205 if_unlock(t);
1da177e4 3206
222f1806 3207 msleep_interruptible(100);
1da177e4 3208
222f1806
LC		 3209 if (signal_pending(current))
3210 goto signal;
3211 if_lock(t);
3212 }
3213 if_unlock(t);
3214 return 1;
3215signal:
3216 return 0;
1da177e4
LT		 3217}
3218
3219static int pktgen_wait_all_threads_run(void)
3220{
cdcdbe0b 3221 struct pktgen_thread *t;
1da177e4 3222 int sig = 1;
222f1806 3223
6146e6a4 3224 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3225
3226 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3227 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3228 if (sig == 0)
3229 break;
1da177e4 3230 }
cdcdbe0b
LC		 3231
3232 if (sig == 0)
3233 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3234 t->control |= (T_STOP);
cdcdbe0b 3235
6146e6a4 3236 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3237 return sig;
3238}
3239
3240static void pktgen_run_all_threads(void)
3241{
cdcdbe0b 3242 struct pktgen_thread *t;
1da177e4 3243
25c4e53a 3244 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3245
6146e6a4 3246 mutex_lock(&pktgen_thread_lock);
1da177e4 3247
cdcdbe0b 3248 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3249 t->control |= (T_RUN);
cdcdbe0b 3250
6146e6a4 3251 mutex_unlock(&pktgen_thread_lock);
1da177e4 3252
63adc6fb
SH		 3253 /* Propagate thread->control */
3254 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3255
1da177e4
LT		 3256 pktgen_wait_all_threads_run();
3257}
3258
eb37b41c
JB		 3259static void pktgen_reset_all_threads(void)
3260{
3261 struct pktgen_thread *t;
3262
3263 pr_debug("pktgen: entering pktgen_reset_all_threads.\n");
3264
3265 mutex_lock(&pktgen_thread_lock);
3266
3267 list_for_each_entry(t, &pktgen_threads, th_list)
3268 t->control |= (T_REMDEVALL);
3269
3270 mutex_unlock(&pktgen_thread_lock);
3271
63adc6fb
SH		 3272 /* Propagate thread->control */
3273 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3274
3275 pktgen_wait_all_threads_run();
3276}
3277
1da177e4
LT		 3278static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3279{
fd29cf72 3280 __u64 bps, mbps, pps;
222f1806 3281 char *p = pkt_dev->result;
fd29cf72
SH		 3282 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3283 pkt_dev->started_at);
3284 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3285
3286 p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
3287 (unsigned long long)ktime_to_us(elapsed),
3288 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3289 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3290 (unsigned long long)pkt_dev->sofar,
3291 pkt_dev->cur_pkt_size, nr_frags);
3292
fd29cf72
SH		 3293 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3294 ktime_to_ns(elapsed));
222f1806
LC		 3295
3296 bps = pps * 8 * pkt_dev->cur_pkt_size;
3297
3298 mbps = bps;
3299 do_div(mbps, 1000000);
3300 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3301 (unsigned long long)pps,
3302 (unsigned long long)mbps,
3303 (unsigned long long)bps,
3304 (unsigned long long)pkt_dev->errors);
1da177e4 3305}
1da177e4
LT		 3306
3307/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3308static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3309{
222f1806 3310 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3311
222f1806 3312 if (!pkt_dev->running) {
25a8b254 3313 printk(KERN_WARNING "pktgen: interface: %s is already "
593f63b0 3314 "stopped\n", pkt_dev->odevname);
222f1806
LC		 3315 return -EINVAL;
3316 }
1da177e4 3317
3bda06a3
SH		 3318 kfree_skb(pkt_dev->skb);
3319 pkt_dev->skb = NULL;
fd29cf72 3320 pkt_dev->stopped_at = ktime_now();
222f1806 3321 pkt_dev->running = 0;
1da177e4 3322
95ed63f7 3323 show_results(pkt_dev, nr_frags);
1da177e4 3324
222f1806 3325 return 0;
1da177e4
LT		 3326}
3327
222f1806 3328static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3329{
c26a8016 3330 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3331
1da177e4
LT		 3332 if_lock(t);
3333
c26a8016
LC		 3334 list_for_each_entry(pkt_dev, &t->if_list, list) {
3335 if (!pkt_dev->running)
222f1806
LC		 3336 continue;
3337 if (best == NULL)
c26a8016 3338 best = pkt_dev;
fd29cf72 3339 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3340 best = pkt_dev;
1da177e4
LT		 3341 }
3342 if_unlock(t);
222f1806 3343 return best;
1da177e4
LT		 3344}
3345
222f1806
LC		 3346static void pktgen_stop(struct pktgen_thread *t)
3347{
c26a8016 3348 struct pktgen_dev *pkt_dev;
1da177e4 3349
25c4e53a 3350 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3351
222f1806 3352 if_lock(t);
1da177e4 3353
c26a8016
LC		 3354 list_for_each_entry(pkt_dev, &t->if_list, list) {
3355 pktgen_stop_device(pkt_dev);
95ed63f7 3356 }
1da177e4 3357
222f1806 3358 if_unlock(t);
1da177e4
LT		 3359}
3360
95ed63f7
AK		 3361/*
3362 * one of our devices needs to be removed - find it
3363 * and remove it
3364 */
3365static void pktgen_rem_one_if(struct pktgen_thread *t)
3366{
c26a8016
LC		 3367 struct list_head *q, *n;
3368 struct pktgen_dev *cur;
95ed63f7 3369
25c4e53a 3370 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3371
3372 if_lock(t);
3373
c26a8016
LC		 3374 list_for_each_safe(q, n, &t->if_list) {
3375 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3376
222f1806
LC		 3377 if (!cur->removal_mark)
3378 continue;
95ed63f7 3379
86dc1ad2 3380 kfree_skb(cur->skb);
95ed63f7
AK		 3381 cur->skb = NULL;
3382
3383 pktgen_remove_device(t, cur);
3384
3385 break;
3386 }
3387
3388 if_unlock(t);
3389}
3390
222f1806 3391static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3392{
c26a8016
LC		 3393 struct list_head *q, *n;
3394 struct pktgen_dev *cur;
222f1806
LC		 3395
3396 /* Remove all devices, free mem */
95ed63f7 3397
25c4e53a 3398 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3399 if_lock(t);
1da177e4 3400
c26a8016
LC		 3401 list_for_each_safe(q, n, &t->if_list) {
3402 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3403
86dc1ad2 3404 kfree_skb(cur->skb);
95ed63f7
AK		 3405 cur->skb = NULL;
3406
1da177e4
LT		 3407 pktgen_remove_device(t, cur);
3408 }
3409
222f1806 3410 if_unlock(t);
1da177e4
LT		 3411}
3412
222f1806 3413static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3414{
222f1806 3415 /* Remove from the thread list */
1da177e4 3416
ee74baa7 3417 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3418
6146e6a4 3419 mutex_lock(&pktgen_thread_lock);
1da177e4 3420
cdcdbe0b
LC		 3421 list_del(&t->th_list);
3422
6146e6a4 3423 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3424}
3425
ef87979c 3426static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3427{
fd29cf72 3428 ktime_t idle_start = ktime_now();
ef87979c
SH		 3429 schedule();
3430 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3431}
3791decb 3432
ef87979c
SH		 3433static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3434{
3435 ktime_t idle_start = ktime_now();
3791decb 3436
ef87979c
SH		 3437 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3438 if (signal_pending(current))
3439 break;
3440
3441 if (need_resched())
3442 pktgen_resched(pkt_dev);
3443 else
3444 cpu_relax();
3445 }
fd29cf72 3446 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3447}
3448
475ac1e4 3449static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3450{
00829823 3451 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3452 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3453 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3454 struct netdev_queue *txq;
fd2ea0a7 3455 u16 queue_map;
1da177e4
LT		 3456 int ret;
3457
ef87979c
SH		 3458 /* If device is offline, then don't send */
3459 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3460 pktgen_stop_device(pkt_dev);
3461 return;
fd2ea0a7
DM		 3462 }
3463
ef87979c
SH		 3464 /* This is max DELAY, this has special meaning of
3465 * "never transmit"
3466 */
3467 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3468 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3469 return;
1da177e4 3470 }
222f1806 3471
ef87979c 3472 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3473 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3474 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3475 /* build a new pkt */
3476 kfree_skb(pkt_dev->skb);
3477
3478 pkt_dev->skb = fill_packet(odev, pkt_dev);
3479 if (pkt_dev->skb == NULL) {
3480 printk(KERN_ERR "pktgen: ERROR: couldn't "
3481 "allocate skb in fill_packet.\n");
3482 schedule();
3483 pkt_dev->clone_count--; /* back out increment, OOM */
3484 return;
1da177e4 3485 }
baac8564 3486 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3487 pkt_dev->allocated_skbs++;
3488 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3489 }
95ed63f7 3490
ef87979c
SH		 3491 if (pkt_dev->delay && pkt_dev->last_ok)
3492 spin(pkt_dev, pkt_dev->next_tx);
3493
fd2ea0a7
DM		 3494 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3495 txq = netdev_get_tx_queue(odev, queue_map);
3496
3497 __netif_tx_lock_bh(txq);
5b8db2f5 3498
0835acfe 3499 if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) {
ef87979c 3500 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3501 pkt_dev->last_ok = 0;
3502 goto unlock;
3503 }
3504 atomic_inc(&(pkt_dev->skb->users));
3505 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3506
3507 switch (ret) {
3508 case NETDEV_TX_OK:
3509 txq_trans_update(txq);
3510 pkt_dev->last_ok = 1;
3511 pkt_dev->sofar++;
3512 pkt_dev->seq_num++;
baac8564 3513 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3514 break;
f466dba1
JF		 3515 case NET_XMIT_DROP:
3516 case NET_XMIT_CN:
3517 case NET_XMIT_POLICED:
3518 /* skb has been consumed */
3519 pkt_dev->errors++;
3520 break;
ef87979c
SH		 3521 default: /* Drivers are not supposed to return other values! */
3522 if (net_ratelimit())
3523 pr_info("pktgen: %s xmit error: %d\n",
593f63b0 3524 pkt_dev->odevname, ret);
ef87979c
SH		 3525 pkt_dev->errors++;
3526 /* fallthru */
3527 case NETDEV_TX_LOCKED:
3528 case NETDEV_TX_BUSY:
3529 /* Retry it next time */
3530 atomic_dec(&(pkt_dev->skb->users));
3531 pkt_dev->last_ok = 0;
222f1806 3532 }
0835acfe 3533unlock:
fd2ea0a7 3534 __netif_tx_unlock_bh(txq);
222f1806 3535
1da177e4
LT		 3536 /* If pkt_dev->count is zero, then run forever */
3537 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3538 pktgen_wait_for_skb(pkt_dev);
222f1806 3539
1da177e4
LT		 3540 /* Done with this */
3541 pktgen_stop_device(pkt_dev);
222f1806 3542 }
222f1806 3543}
1da177e4 3544
4ec93edb 3545/*
1da177e4
LT		 3546 * Main loop of the thread goes here
3547 */
3548
ee74baa7 3549static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3550{
3551 DEFINE_WAIT(wait);
ee74baa7 3552 struct pktgen_thread *t = arg;
222f1806 3553 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3554 int cpu = t->cpu;
1da177e4 3555
ee74baa7 3556 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3557
3558 init_waitqueue_head(&t->queue);
d3ede327 3559 complete(&t->start_done);
1da177e4 3560
63adc6fb
SH		 3561 pr_debug("pktgen: starting pktgen/%d: pid=%d\n",
3562 cpu, task_pid_nr(current));
1da177e4 3563
ee74baa7 3564 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3565
83144186
RW		 3566 set_freezable();
3567
ee74baa7
DM		 3568 while (!kthread_should_stop()) {
3569 pkt_dev = next_to_run(t);
1da177e4 3570
ef87979c
SH		 3571 if (unlikely(!pkt_dev && t->control == 0)) {
3572 wait_event_interruptible_timeout(t->queue,
3573 t->control != 0,
3574 HZ/10);
1b3f720b 3575 try_to_freeze();
ef87979c 3576 continue;
ee74baa7 3577 }
1da177e4 3578
ee74baa7 3579 __set_current_state(TASK_RUNNING);
222f1806 3580
ef87979c 3581 if (likely(pkt_dev)) {
1da177e4
LT		 3582 pktgen_xmit(pkt_dev);
3583
ef87979c
SH		 3584 if (need_resched())
3585 pktgen_resched(pkt_dev);
3586 else
3587 cpu_relax();
3588 }
3589
222f1806 3590 if (t->control & T_STOP) {
1da177e4
LT		 3591 pktgen_stop(t);
3592 t->control &= ~(T_STOP);
3593 }
3594
222f1806 3595 if (t->control & T_RUN) {
1da177e4
LT		 3596 pktgen_run(t);
3597 t->control &= ~(T_RUN);
3598 }
3599
222f1806 3600 if (t->control & T_REMDEVALL) {
1da177e4 3601 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3602 t->control &= ~(T_REMDEVALL);
3603 }
3604
222f1806 3605 if (t->control & T_REMDEV) {
95ed63f7 3606 pktgen_rem_one_if(t);
1da177e4
LT		 3607 t->control &= ~(T_REMDEV);
3608 }
3609
09fe3ef4
AM		 3610 try_to_freeze();
3611
ee74baa7 3612 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3613 }
1da177e4 3614
25c4e53a 3615 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3616 pktgen_stop(t);
1da177e4 3617
25c4e53a 3618 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3619 pktgen_rem_all_ifs(t);
1da177e4 3620
25c4e53a 3621 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3622 pktgen_rem_thread(t);
cdcdbe0b 3623
ee74baa7 3624 return 0;
1da177e4
LT		 3625}
3626
222f1806 3627static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3628 const char *ifname, bool exact)
1da177e4 3629{
c26a8016 3630 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3631 size_t len = strlen(ifname);
222f1806 3632
3e984840 3633 if_lock(t);
c26a8016 3634 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3635 if (strncmp(p->odevname, ifname, len) == 0) {
3636 if (p->odevname[len]) {
3637 if (exact || p->odevname[len] != '@')
3638 continue;
3639 }
c26a8016 3640 pkt_dev = p;
222f1806
LC		 3641 break;
3642 }
222f1806
LC		 3643
3644 if_unlock(t);
25c4e53a 3645 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3646 return pkt_dev;
1da177e4
LT		 3647}
3648
4ec93edb
YH		 3649/*
3650 * Adds a dev at front of if_list.
1da177e4
LT		 3651 */
3652
222f1806
LC		 3653static int add_dev_to_thread(struct pktgen_thread *t,
3654 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3655{
3656 int rv = 0;
222f1806
LC		 3657
3658 if_lock(t);
3659
3660 if (pkt_dev->pg_thread) {
25a8b254
DM		 3661 printk(KERN_ERR "pktgen: ERROR: already assigned "
3662 "to a thread.\n");
222f1806
LC		 3663 rv = -EBUSY;
3664 goto out;
3665 }
c26a8016
LC		 3666
3667 list_add(&pkt_dev->list, &t->if_list);
222f1806 3668 pkt_dev->pg_thread = t;
1da177e4
LT		 3669 pkt_dev->running = 0;
3670
222f1806
LC		 3671out:
3672 if_unlock(t);
3673 return rv;
1da177e4
LT		 3674}
3675
3676/* Called under thread lock */
3677
222f1806 3678static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3679{
222f1806 3680 struct pktgen_dev *pkt_dev;
39df232f 3681 int err;
3291b9db 3682 int node = cpu_to_node(t->cpu);
222f1806 3683
1da177e4
LT		 3684 /* We don't allow a device to be on several threads */
3685
d50a6b56
SH		 3686 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3687 if (pkt_dev) {
25a8b254 3688 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3689 return -EBUSY;
3690 }
d50a6b56 3691
3291b9db 3692 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3693 if (!pkt_dev)
3694 return -ENOMEM;
3695
593f63b0 3696 strcpy(pkt_dev->odevname, ifname);
3291b9db
ED		 3697 pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3698 node);
d50a6b56
SH		 3699 if (pkt_dev->flows == NULL) {
3700 kfree(pkt_dev);
3701 return -ENOMEM;
3702 }
222f1806 3703 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3704
95ed63f7 3705 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3706 pkt_dev->min_pkt_size = ETH_ZLEN;
3707 pkt_dev->max_pkt_size = ETH_ZLEN;
3708 pkt_dev->nfrags = 0;
3709 pkt_dev->clone_skb = pg_clone_skb_d;
fd29cf72 3710 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3711 pkt_dev->count = pg_count_d;
3712 pkt_dev->sofar = 0;
222f1806 3713 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3714 pkt_dev->udp_src_max = 9;
3715 pkt_dev->udp_dst_min = 9;
3716 pkt_dev->udp_dst_max = 9;
3717
34954ddc
FF		 3718 pkt_dev->vlan_p = 0;
3719 pkt_dev->vlan_cfi = 0;
3720 pkt_dev->vlan_id = 0xffff;
3721 pkt_dev->svlan_p = 0;
3722 pkt_dev->svlan_cfi = 0;
3723 pkt_dev->svlan_id = 0xffff;
e99b99b4 3724 pkt_dev->node = -1;
34954ddc 3725
39df232f
SH		 3726 err = pktgen_setup_dev(pkt_dev, ifname);
3727 if (err)
3728 goto out1;
d50a6b56 3729
5efdccbc
DL		 3730 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3731 &pktgen_if_fops, pkt_dev);
39df232f 3732 if (!pkt_dev->entry) {
25a8b254 3733 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3734 PG_PROC_DIR, ifname);
39df232f
SH		 3735 err = -EINVAL;
3736 goto out2;
d50a6b56 3737 }
a553e4a6
JHS		 3738#ifdef CONFIG_XFRM
3739 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3740 pkt_dev->ipsproto = IPPROTO_ESP;
3741#endif
d50a6b56
SH		 3742
3743 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3744out2:
3745 dev_put(pkt_dev->odev);
3746out1:
a553e4a6
JHS		 3747#ifdef CONFIG_XFRM
3748 free_SAs(pkt_dev);
3749#endif
1d0ebfe7 3750 vfree(pkt_dev->flows);
39df232f
SH		 3751 kfree(pkt_dev);
3752 return err;
1da177e4
LT		 3753}
3754
ee74baa7 3755static int __init pktgen_create_thread(int cpu)
1da177e4 3756{
cdcdbe0b 3757 struct pktgen_thread *t;
d50a6b56 3758 struct proc_dir_entry *pe;
ee74baa7 3759 struct task_struct *p;
222f1806 3760
3291b9db
ED		 3761 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3762 cpu_to_node(cpu));
222f1806 3763 if (!t) {
25a8b254
DM		 3764 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3765 "create new thread.\n");
222f1806
LC		 3766 return -ENOMEM;
3767 }
3768
222f1806 3769 spin_lock_init(&t->if_lock);
1da177e4 3770 t->cpu = cpu;
222f1806 3771
ee74baa7
DM		 3772 INIT_LIST_HEAD(&t->if_list);
3773
3774 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3775 init_completion(&t->start_done);
ee74baa7
DM		 3776
3777 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3778 if (IS_ERR(p)) {
25a8b254
DM		 3779 printk(KERN_ERR "pktgen: kernel_thread() failed "
3780 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3781 list_del(&t->th_list);
3782 kfree(t);
3783 return PTR_ERR(p);
3784 }
3785 kthread_bind(p, cpu);
3786 t->tsk = p;
3787
5efdccbc
DL		 3788 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3789 &pktgen_thread_fops, t);
222f1806 3790 if (!pe) {
25a8b254 3791 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3792 PG_PROC_DIR, t->tsk->comm);
3793 kthread_stop(p);
3794 list_del(&t->th_list);
222f1806
LC		 3795 kfree(t);
3796 return -EINVAL;
3797 }
d50a6b56 3798
ee74baa7 3799 wake_up_process(p);
d3ede327 3800 wait_for_completion(&t->start_done);
1da177e4
LT		 3801
3802 return 0;
3803}
3804
4ec93edb
YH		 3805/*
3806 * Removes a device from the thread if_list.
1da177e4 3807 */
222f1806
LC		 3808static void _rem_dev_from_if_list(struct pktgen_thread *t,
3809 struct pktgen_dev *pkt_dev)
1da177e4 3810{
c26a8016
LC		 3811 struct list_head *q, *n;
3812 struct pktgen_dev *p;
1da177e4 3813
c26a8016
LC		 3814 list_for_each_safe(q, n, &t->if_list) {
3815 p = list_entry(q, struct pktgen_dev, list);
3816 if (p == pkt_dev)
3817 list_del(&p->list);
1da177e4
LT		 3818 }
3819}
3820
222f1806
LC		 3821static int pktgen_remove_device(struct pktgen_thread *t,
3822 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3823{
3824
25c4e53a 3825 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3826
222f1806 3827 if (pkt_dev->running) {
25a8b254
DM		 3828 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3829 "running interface, stopping it now.\n");
222f1806
LC		 3830 pktgen_stop_device(pkt_dev);
3831 }
3832
3833 /* Dis-associate from the interface */
1da177e4
LT		 3834
3835 if (pkt_dev->odev) {
3836 dev_put(pkt_dev->odev);
222f1806
LC		 3837 pkt_dev->odev = NULL;
3838 }
3839
1da177e4
LT		 3840 /* And update the thread if_list */
3841
3842 _rem_dev_from_if_list(t, pkt_dev);
3843
39df232f
SH		 3844 if (pkt_dev->entry)
3845 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3846
a553e4a6
JHS		 3847#ifdef CONFIG_XFRM
3848 free_SAs(pkt_dev);
3849#endif
1d0ebfe7 3850 vfree(pkt_dev->flows);
1da177e4 3851 kfree(pkt_dev);
222f1806 3852 return 0;
1da177e4
LT		 3853}
3854
222f1806 3855static int __init pg_init(void)
1da177e4
LT		 3856{
3857 int cpu;
d50a6b56 3858 struct proc_dir_entry *pe;
1da177e4 3859
25a8b254 3860 printk(KERN_INFO "%s", version);
1da177e4 3861
457c4cbc 3862 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3863 if (!pg_proc_dir)
3864 return -ENODEV;
1da177e4 3865
25296d59 3866 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3867 if (pe == NULL) {
25a8b254
DM		 3868 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3869 "procfs entry.\n", PGCTRL);
457c4cbc 3870 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3871 return -EINVAL;
3872 }
1da177e4 3873
1da177e4
LT		 3874 /* Register us to receive netdevice events */
3875 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3876
670c02c2 3877 for_each_online_cpu(cpu) {
8024bb24 3878 int err;
1da177e4 3879
ee74baa7 3880 err = pktgen_create_thread(cpu);
8024bb24 3881 if (err)
25a8b254
DM		 3882 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3883 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3884 }
8024bb24
LC		 3885
3886 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3887 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3888 "all threads\n");
8024bb24
LC		 3889 unregister_netdevice_notifier(&pktgen_notifier_block);
3890 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3891 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3892 return -ENODEV;
3893 }
3894
222f1806 3895 return 0;
1da177e4
LT		 3896}
3897
3898static void __exit pg_cleanup(void)
3899{
cdcdbe0b
LC		 3900 struct pktgen_thread *t;
3901 struct list_head *q, *n;
1da177e4
LT		 3902 wait_queue_head_t queue;
3903 init_waitqueue_head(&queue);
3904
222f1806 3905 /* Stop all interfaces & threads */
1da177e4 3906
cdcdbe0b
LC		 3907 list_for_each_safe(q, n, &pktgen_threads) {
3908 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3909 kthread_stop(t->tsk);
3910 kfree(t);
222f1806 3911 }
1da177e4 3912
222f1806 3913 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3914 unregister_netdevice_notifier(&pktgen_notifier_block);
3915
222f1806 3916 /* Clean up proc file system */
d50a6b56 3917 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3918 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3919}
3920
1da177e4
LT		 3921module_init(pg_init);
3922module_exit(pg_cleanup);
3923
c3d2f52d 3924MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3925MODULE_DESCRIPTION("Packet Generator tool");
3926MODULE_LICENSE("GPL");
c3d2f52d 3927MODULE_VERSION(VERSION);
1da177e4 3928module_param(pg_count_d, int, 0);
c3d2f52d 3929MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3930module_param(pg_delay_d, int, 0);
c3d2f52d 3931MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3932module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3933MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3934module_param(debug, int, 0);
c3d2f52d 3935MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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