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pktgen: T_TERMINATE flag is unused
[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
c3d2f52d 172#define VERSION "2.72"
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() */
1da177e4
LT		 193
194/* Thread control flag bits */
6b80d6a6
SH		 195#define T_STOP (1<<0) /* Stop run */
196#define T_RUN (1<<1) /* Start run */
197#define T_REMDEVALL (1<<2) /* Remove all devs */
198#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 199
1da177e4
LT		 200/* If lock -- can be removed after some work */
201#define if_lock(t) spin_lock(&(t->if_lock));
202#define if_unlock(t) spin_unlock(&(t->if_lock));
203
204/* Used to help with determining the pkts on receive */
205#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 206#define PG_PROC_DIR "pktgen"
207#define PGCTRL "pgctrl"
63adc6fb 208static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 209
210#define MAX_CFLOWS 65536
211
34954ddc
FF		 212#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
213#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
214
222f1806 215struct flow_state {
252e3346 216 __be32 cur_daddr;
222f1806 217 int count;
a553e4a6
JHS		 218#ifdef CONFIG_XFRM
219 struct xfrm_state *x;
220#endif
007a531b 221 __u32 flags;
1da177e4
LT		 222};
223
007a531b
JHS		 224/* flow flag bits */
225#define F_INIT (1<<0) /* flow has been initialized */
226
1da177e4 227struct pktgen_dev {
1da177e4
LT		 228 /*
229 * Try to keep frequent/infrequent used vars. separated.
230 */
39df232f
SH		 231 struct proc_dir_entry *entry; /* proc file */
232 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 233 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 234
63adc6fb 235 int running; /* if false, the test will stop */
1da177e4 236
222f1806
LC		 237 /* If min != max, then we will either do a linear iteration, or
238 * we will do a random selection from within the range.
239 */
240 __u32 flags;
95ed63f7
AK		 241 int removal_mark; /* non-zero => the device is marked for
242 * removal by worker thread */
1da177e4 243
222f1806
LC		 244 int min_pkt_size; /* = ETH_ZLEN; */
245 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 246 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 247 int nfrags;
fd29cf72
SH		 248 u64 delay; /* nano-seconds */
249
222f1806
LC		 250 __u64 count; /* Default No packets to send */
251 __u64 sofar; /* How many pkts we've sent so far */
252 __u64 tx_bytes; /* How many bytes we've transmitted */
63adc6fb
SH		 253 __u64 errors; /* Errors when trying to transmit,
254 pkts will be re-sent */
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;
222f1806
LC		 338 __u16 cur_udp_dst;
339 __u16 cur_udp_src;
45b270f8 340 __u16 cur_queue_map;
222f1806
LC		 341 __u32 cur_pkt_size;
342
343 __u8 hh[14];
344 /* = {
345 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
346
347 We fill in SRC address later
348 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
349 0x08, 0x00
350 };
351 */
352 __u16 pad; /* pad out the hh struct to an even 16 bytes */
353
63adc6fb 354 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 355 * are transmitting the same one multiple times
356 */
63adc6fb
SH		 357 struct net_device *odev; /* The out-going device.
358 * Note that the device should have it's
359 * pg_info pointer pointing back to this
360 * device.
361 * Set when the user specifies the out-going
362 * device name (not when the inject is
363 * started as it used to do.)
364 */
1da177e4 365 struct flow_state *flows;
222f1806
LC		 366 unsigned cflows; /* Concurrent flows (config) */
367 unsigned lflow; /* Flow length (config) */
368 unsigned nflows; /* accumulated flows (stats) */
007a531b 369 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 370
371 u16 queue_map_min;
372 u16 queue_map_max;
373
a553e4a6
JHS		 374#ifdef CONFIG_XFRM
375 __u8 ipsmode; /* IPSEC mode (config) */
376 __u8 ipsproto; /* IPSEC type (config) */
377#endif
39df232f 378 char result[512];
1da177e4
LT		 379};
380
381struct pktgen_hdr {
252e3346
AV		 382 __be32 pgh_magic;
383 __be32 seq_num;
384 __be32 tv_sec;
385 __be32 tv_usec;
1da177e4
LT		 386};
387
388struct pktgen_thread {
63adc6fb 389 spinlock_t if_lock; /* for list of devices */
c26a8016 390 struct list_head if_list; /* All device here */
cdcdbe0b 391 struct list_head th_list;
ee74baa7 392 struct task_struct *tsk;
222f1806 393 char result[512];
222f1806 394
63adc6fb
SH		 395 /* Field for thread to receive "posted" events terminate,
396 stop ifs etc. */
222f1806
LC		 397
398 u32 control;
1da177e4
LT		 399 int cpu;
400
222f1806 401 wait_queue_head_t queue;
d3ede327 402 struct completion start_done;
1da177e4
LT		 403};
404
405#define REMOVE 1
406#define FIND 0
407
fd29cf72 408static inline ktime_t ktime_now(void)
1da177e4 409{
fd29cf72
SH		 410 struct timespec ts;
411 ktime_get_ts(&ts);
412
413 return timespec_to_ktime(ts);
1da177e4
LT		 414}
415
fd29cf72
SH		 416/* This works even if 32 bit because of careful byte order choice */
417static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 418{
fd29cf72 419 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 420}
421
c3d2f52d
SH		 422static const char version[] =
423 "pktgen " VERSION ": Packet Generator for packet performance testing.\n";
1da177e4 424
222f1806
LC		 425static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
426static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
427static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
428 const char *ifname);
1da177e4
LT		 429static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
430static void pktgen_run_all_threads(void);
eb37b41c 431static void pktgen_reset_all_threads(void);
1da177e4 432static void pktgen_stop_all_threads_ifs(void);
3bda06a3 433
222f1806 434static void pktgen_stop(struct pktgen_thread *t);
1da177e4 435static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 436
222f1806
LC		 437static unsigned int scan_ip6(const char *s, char ip[16]);
438static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 439
440/* Module parameters, defaults. */
65c5b786
SH		 441static int pg_count_d __read_mostly = 1000;
442static int pg_delay_d __read_mostly;
443static int pg_clone_skb_d __read_mostly;
444static int debug __read_mostly;
1da177e4 445
222fa076 446static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 447static LIST_HEAD(pktgen_threads);
1da177e4 448
1da177e4
LT		 449static struct notifier_block pktgen_notifier_block = {
450 .notifier_call = pktgen_device_event,
451};
452
1da177e4 453/*
4ec93edb 454 * /proc handling functions
1da177e4
LT		 455 *
456 */
457
d50a6b56 458static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 459{
c3d2f52d 460 seq_puts(seq, version);
d50a6b56 461 return 0;
1da177e4
LT		 462}
463
63adc6fb
SH		 464static ssize_t pgctrl_write(struct file *file, const char __user *buf,
465 size_t count, loff_t *ppos)
1da177e4 466{
1da177e4 467 int err = 0;
d50a6b56 468 char data[128];
1da177e4 469
222f1806
LC		 470 if (!capable(CAP_NET_ADMIN)) {
471 err = -EPERM;
1da177e4 472 goto out;
222f1806 473 }
1da177e4 474
d50a6b56
SH		 475 if (count > sizeof(data))
476 count = sizeof(data);
1da177e4 477
1da177e4 478 if (copy_from_user(data, buf, count)) {
b4099fab 479 err = -EFAULT;
d50a6b56 480 goto out;
222f1806
LC		 481 }
482 data[count - 1] = 0; /* Make string */
1da177e4 483
222f1806 484 if (!strcmp(data, "stop"))
1da177e4
LT		 485 pktgen_stop_all_threads_ifs();
486
222f1806 487 else if (!strcmp(data, "start"))
1da177e4
LT		 488 pktgen_run_all_threads();
489
eb37b41c
JB		 490 else if (!strcmp(data, "reset"))
491 pktgen_reset_all_threads();
492
222f1806 493 else
25a8b254 494 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 495
496 err = count;
497
222f1806
LC		 498out:
499 return err;
1da177e4
LT		 500}
501
d50a6b56
SH		 502static int pgctrl_open(struct inode *inode, struct file *file)
503{
504 return single_open(file, pgctrl_show, PDE(inode)->data);
505}
506
9a32144e 507static const struct file_operations pktgen_fops = {
222f1806
LC		 508 .owner = THIS_MODULE,
509 .open = pgctrl_open,
510 .read = seq_read,
511 .llseek = seq_lseek,
512 .write = pgctrl_write,
513 .release = single_release,
d50a6b56
SH		 514};
515
516static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 517{
648fda74 518 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 519 ktime_t stopped;
520 u64 idle;
222f1806
LC		 521
522 seq_printf(seq,
523 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
524 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
525 pkt_dev->max_pkt_size);
526
527 seq_printf(seq,
fd29cf72
SH		 528 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
529 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
39df232f 530 pkt_dev->clone_skb, pkt_dev->odev->name);
222f1806
LC		 531
532 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
533 pkt_dev->lflow);
534
45b270f8
RO		 535 seq_printf(seq,
536 " queue_map_min: %u queue_map_max: %u\n",
537 pkt_dev->queue_map_min,
538 pkt_dev->queue_map_max);
539
222f1806
LC		 540 if (pkt_dev->flags & F_IPV6) {
541 char b1[128], b2[128], b3[128];
542 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
543 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
544 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
545 seq_printf(seq,
546 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
547 b2, b3);
548
549 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
550 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
551 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
552 seq_printf(seq,
553 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
554 b2, b3);
555
63adc6fb
SH		 556 } else {
557 seq_printf(seq,
558 " dst_min: %s dst_max: %s\n",
559 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 560 seq_printf(seq,
63adc6fb
SH		 561 " src_min: %s src_max: %s\n",
562 pkt_dev->src_min, pkt_dev->src_max);
563 }
1da177e4 564
222f1806 565 seq_puts(seq, " src_mac: ");
1da177e4 566
e174961c
JB		 567 seq_printf(seq, "%pM ",
568 is_zero_ether_addr(pkt_dev->src_mac) ?
569 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 570
571 seq_printf(seq, "dst_mac: ");
e174961c 572 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 573
574 seq_printf(seq,
63adc6fb
SH		 575 " udp_src_min: %d udp_src_max: %d"
576 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 577 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
578 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
579
580 seq_printf(seq,
ca6549af 581 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 582 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 583
ca6549af
SW		 584 if (pkt_dev->nr_labels) {
585 unsigned i;
586 seq_printf(seq, " mpls: ");
e71a4783 587 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 588 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
589 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
590 }
591
63adc6fb 592 if (pkt_dev->vlan_id != 0xffff)
34954ddc 593 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 594 pkt_dev->vlan_id, pkt_dev->vlan_p,
595 pkt_dev->vlan_cfi);
34954ddc 596
63adc6fb 597 if (pkt_dev->svlan_id != 0xffff)
34954ddc 598 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 599 pkt_dev->svlan_id, pkt_dev->svlan_p,
600 pkt_dev->svlan_cfi);
34954ddc 601
63adc6fb 602 if (pkt_dev->tos)
1ca7768c 603 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 604
63adc6fb 605 if (pkt_dev->traffic_class)
1ca7768c 606 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 607
ca6549af
SW		 608 seq_printf(seq, " Flags: ");
609
222f1806
LC		 610 if (pkt_dev->flags & F_IPV6)
611 seq_printf(seq, "IPV6 ");
1da177e4 612
222f1806
LC		 613 if (pkt_dev->flags & F_IPSRC_RND)
614 seq_printf(seq, "IPSRC_RND ");
1da177e4 615
222f1806
LC		 616 if (pkt_dev->flags & F_IPDST_RND)
617 seq_printf(seq, "IPDST_RND ");
1da177e4 618
222f1806
LC		 619 if (pkt_dev->flags & F_TXSIZE_RND)
620 seq_printf(seq, "TXSIZE_RND ");
1da177e4 621
222f1806
LC		 622 if (pkt_dev->flags & F_UDPSRC_RND)
623 seq_printf(seq, "UDPSRC_RND ");
1da177e4 624
222f1806
LC		 625 if (pkt_dev->flags & F_UDPDST_RND)
626 seq_printf(seq, "UDPDST_RND ");
1da177e4 627
ca6549af
SW		 628 if (pkt_dev->flags & F_MPLS_RND)
629 seq_printf(seq, "MPLS_RND ");
630
45b270f8
RO		 631 if (pkt_dev->flags & F_QUEUE_MAP_RND)
632 seq_printf(seq, "QUEUE_MAP_RND ");
633
e6fce5b9
RO		 634 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
635 seq_printf(seq, "QUEUE_MAP_CPU ");
636
007a531b
JHS		 637 if (pkt_dev->cflows) {
638 if (pkt_dev->flags & F_FLOW_SEQ)
639 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
640 else
641 seq_printf(seq, "FLOW_RND ");
642 }
643
a553e4a6
JHS		 644#ifdef CONFIG_XFRM
645 if (pkt_dev->flags & F_IPSEC_ON)
646 seq_printf(seq, "IPSEC ");
647#endif
648
222f1806
LC		 649 if (pkt_dev->flags & F_MACSRC_RND)
650 seq_printf(seq, "MACSRC_RND ");
1da177e4 651
222f1806
LC		 652 if (pkt_dev->flags & F_MACDST_RND)
653 seq_printf(seq, "MACDST_RND ");
1da177e4 654
34954ddc
FF		 655 if (pkt_dev->flags & F_VID_RND)
656 seq_printf(seq, "VID_RND ");
657
658 if (pkt_dev->flags & F_SVID_RND)
659 seq_printf(seq, "SVID_RND ");
660
222f1806
LC		 661 seq_puts(seq, "\n");
662
fd29cf72
SH		 663 /* not really stopped, more like last-running-at */
664 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
665 idle = pkt_dev->idle_acc;
666 do_div(idle, NSEC_PER_USEC);
1da177e4 667
222f1806 668 seq_printf(seq,
fd29cf72 669 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 670 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 671 (unsigned long long)pkt_dev->errors);
672
673 seq_printf(seq,
674 " started: %lluus stopped: %lluus idle: %lluus\n",
675 (unsigned long long) ktime_to_us(pkt_dev->started_at),
676 (unsigned long long) ktime_to_us(stopped),
677 (unsigned long long) idle);
1da177e4 678
222f1806
LC		 679 seq_printf(seq,
680 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 681 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
682 pkt_dev->cur_src_mac_offset);
1da177e4 683
222f1806 684 if (pkt_dev->flags & F_IPV6) {
1da177e4 685 char b1[128], b2[128];
222f1806
LC		 686 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
687 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
688 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
689 } else
690 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 691 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 692
222f1806 693 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 694 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 695
45b270f8
RO		 696 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
697
222f1806 698 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 699
700 if (pkt_dev->result[0])
222f1806 701 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 702 else
222f1806 703 seq_printf(seq, "Result: Idle\n");
1da177e4 704
d50a6b56 705 return 0;
1da177e4
LT		 706}
707
ca6549af 708
63adc6fb
SH		 709static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
710 __u32 *num)
ca6549af
SW		 711{
712 int i = 0;
713 *num = 0;
714
e71a4783 715 for (; i < maxlen; i++) {
ca6549af
SW		 716 char c;
717 *num <<= 4;
718 if (get_user(c, &user_buffer[i]))
719 return -EFAULT;
720 if ((c >= '0') && (c <= '9'))
721 *num |= c - '0';
722 else if ((c >= 'a') && (c <= 'f'))
723 *num |= c - 'a' + 10;
724 else if ((c >= 'A') && (c <= 'F'))
725 *num |= c - 'A' + 10;
726 else
727 break;
728 }
729 return i;
730}
731
222f1806
LC		 732static int count_trail_chars(const char __user * user_buffer,
733 unsigned int maxlen)
1da177e4
LT		 734{
735 int i;
736
737 for (i = 0; i < maxlen; i++) {
222f1806
LC		 738 char c;
739 if (get_user(c, &user_buffer[i]))
740 return -EFAULT;
741 switch (c) {
1da177e4
LT		 742 case '\"':
743 case '\n':
744 case '\r':
745 case '\t':
746 case ' ':
747 case '=':
748 break;
749 default:
750 goto done;
3ff50b79 751 }
1da177e4
LT		 752 }
753done:
754 return i;
755}
756
222f1806
LC		 757static unsigned long num_arg(const char __user * user_buffer,
758 unsigned long maxlen, unsigned long *num)
1da177e4
LT		 759{
760 int i = 0;
761 *num = 0;
222f1806
LC		 762
763 for (; i < maxlen; i++) {
764 char c;
765 if (get_user(c, &user_buffer[i]))
766 return -EFAULT;
767 if ((c >= '0') && (c <= '9')) {
1da177e4 768 *num *= 10;
222f1806 769 *num += c - '0';
1da177e4
LT		 770 } else
771 break;
772 }
773 return i;
774}
775
222f1806 776static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4
LT		 777{
778 int i = 0;
779
222f1806
LC		 780 for (; i < maxlen; i++) {
781 char c;
782 if (get_user(c, &user_buffer[i]))
783 return -EFAULT;
784 switch (c) {
1da177e4
LT		 785 case '\"':
786 case '\n':
787 case '\r':
788 case '\t':
789 case ' ':
790 goto done_str;
791 break;
792 default:
793 break;
3ff50b79 794 }
1da177e4
LT		 795 }
796done_str:
1da177e4
LT		 797 return i;
798}
799
ca6549af
SW		 800static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
801{
802 unsigned n = 0;
803 char c;
804 ssize_t i = 0;
805 int len;
806
807 pkt_dev->nr_labels = 0;
808 do {
809 __u32 tmp;
1ca7768c 810 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 811 if (len <= 0)
812 return len;
813 pkt_dev->labels[n] = htonl(tmp);
814 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
815 pkt_dev->flags |= F_MPLS_RND;
816 i += len;
817 if (get_user(c, &buffer[i]))
818 return -EFAULT;
819 i++;
820 n++;
821 if (n >= MAX_MPLS_LABELS)
822 return -E2BIG;
e71a4783 823 } while (c == ',');
ca6549af
SW		 824
825 pkt_dev->nr_labels = n;
826 return i;
827}
828
222f1806
LC		 829static ssize_t pktgen_if_write(struct file *file,
830 const char __user * user_buffer, size_t count,
831 loff_t * offset)
1da177e4 832{
222f1806
LC		 833 struct seq_file *seq = (struct seq_file *)file->private_data;
834 struct pktgen_dev *pkt_dev = seq->private;
1da177e4
LT		 835 int i = 0, max, len;
836 char name[16], valstr[32];
837 unsigned long value = 0;
222f1806
LC		 838 char *pg_result = NULL;
839 int tmp = 0;
1da177e4 840 char buf[128];
222f1806
LC		 841
842 pg_result = &(pkt_dev->result[0]);
843
1da177e4 844 if (count < 1) {
25a8b254 845 printk(KERN_WARNING "pktgen: wrong command format\n");
1da177e4
LT		 846 return -EINVAL;
847 }
222f1806 848
1da177e4
LT		 849 max = count - i;
850 tmp = count_trail_chars(&user_buffer[i], max);
222f1806 851 if (tmp < 0) {
25a8b254 852 printk(KERN_WARNING "pktgen: illegal format\n");
222f1806 853 return tmp;
1da177e4 854 }
222f1806
LC		 855 i += tmp;
856
1da177e4
LT		 857 /* Read variable name */
858
859 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 860 if (len < 0)
222f1806 861 return len;
63adc6fb 862
1da177e4 863 memset(name, 0, sizeof(name));
222f1806 864 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 865 return -EFAULT;
866 i += len;
222f1806
LC		 867
868 max = count - i;
1da177e4 869 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 870 if (len < 0)
871 return len;
872
1da177e4
LT		 873 i += len;
874
875 if (debug) {
222f1806
LC		 876 char tb[count + 1];
877 if (copy_from_user(tb, user_buffer, count))
1da177e4 878 return -EFAULT;
222f1806 879 tb[count] = 0;
25a8b254 880 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 881 (unsigned long)count, tb);
882 }
1da177e4
LT		 883
884 if (!strcmp(name, "min_pkt_size")) {
885 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 886 if (len < 0)
222f1806 887 return len;
63adc6fb 888
1da177e4 889 i += len;
222f1806
LC		 890 if (value < 14 + 20 + 8)
891 value = 14 + 20 + 8;
892 if (value != pkt_dev->min_pkt_size) {
893 pkt_dev->min_pkt_size = value;
894 pkt_dev->cur_pkt_size = value;
895 }
896 sprintf(pg_result, "OK: min_pkt_size=%u",
897 pkt_dev->min_pkt_size);
1da177e4
LT		 898 return count;
899 }
900
222f1806 901 if (!strcmp(name, "max_pkt_size")) {
1da177e4 902 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 903 if (len < 0)
222f1806 904 return len;
63adc6fb 905
1da177e4 906 i += len;
222f1806
LC		 907 if (value < 14 + 20 + 8)
908 value = 14 + 20 + 8;
909 if (value != pkt_dev->max_pkt_size) {
910 pkt_dev->max_pkt_size = value;
911 pkt_dev->cur_pkt_size = value;
912 }
913 sprintf(pg_result, "OK: max_pkt_size=%u",
914 pkt_dev->max_pkt_size);
1da177e4
LT		 915 return count;
916 }
917
222f1806 918 /* Shortcut for min = max */
1da177e4
LT		 919
920 if (!strcmp(name, "pkt_size")) {
921 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 922 if (len < 0)
222f1806 923 return len;
63adc6fb 924
1da177e4 925 i += len;
222f1806
LC		 926 if (value < 14 + 20 + 8)
927 value = 14 + 20 + 8;
928 if (value != pkt_dev->min_pkt_size) {
929 pkt_dev->min_pkt_size = value;
930 pkt_dev->max_pkt_size = value;
931 pkt_dev->cur_pkt_size = value;
932 }
1da177e4
LT		 933 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
934 return count;
935 }
936
222f1806 937 if (!strcmp(name, "debug")) {
1da177e4 938 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 939 if (len < 0)
222f1806 940 return len;
63adc6fb 941
1da177e4 942 i += len;
222f1806 943 debug = value;
1da177e4
LT		 944 sprintf(pg_result, "OK: debug=%u", debug);
945 return count;
946 }
947
222f1806 948 if (!strcmp(name, "frags")) {
1da177e4 949 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 950 if (len < 0)
222f1806 951 return len;
63adc6fb 952
1da177e4
LT		 953 i += len;
954 pkt_dev->nfrags = value;
955 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
956 return count;
957 }
958 if (!strcmp(name, "delay")) {
959 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 960 if (len < 0)
222f1806 961 return len;
63adc6fb 962
1da177e4 963 i += len;
fd29cf72
SH		 964 if (value == 0x7FFFFFFF)
965 pkt_dev->delay = ULLONG_MAX;
966 else
967 pkt_dev->delay = (u64)value * NSEC_PER_USEC;
968
969 sprintf(pg_result, "OK: delay=%llu",
970 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 971 return count;
972 }
222f1806 973 if (!strcmp(name, "udp_src_min")) {
1da177e4 974 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 975 if (len < 0)
222f1806 976 return len;
63adc6fb 977
1da177e4 978 i += len;
222f1806
LC		 979 if (value != pkt_dev->udp_src_min) {
980 pkt_dev->udp_src_min = value;
981 pkt_dev->cur_udp_src = value;
982 }
1da177e4
LT		 983 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
984 return count;
985 }
222f1806 986 if (!strcmp(name, "udp_dst_min")) {
1da177e4 987 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 988 if (len < 0)
222f1806 989 return len;
63adc6fb 990
1da177e4 991 i += len;
222f1806
LC		 992 if (value != pkt_dev->udp_dst_min) {
993 pkt_dev->udp_dst_min = value;
994 pkt_dev->cur_udp_dst = value;
995 }
1da177e4
LT		 996 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
997 return count;
998 }
222f1806 999 if (!strcmp(name, "udp_src_max")) {
1da177e4 1000 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1001 if (len < 0)
222f1806 1002 return len;
63adc6fb 1003
1da177e4 1004 i += len;
222f1806
LC		 1005 if (value != pkt_dev->udp_src_max) {
1006 pkt_dev->udp_src_max = value;
1007 pkt_dev->cur_udp_src = value;
1008 }
1da177e4
LT		 1009 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1010 return count;
1011 }
222f1806 1012 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1013 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1014 if (len < 0)
222f1806 1015 return len;
63adc6fb 1016
1da177e4 1017 i += len;
222f1806
LC		 1018 if (value != pkt_dev->udp_dst_max) {
1019 pkt_dev->udp_dst_max = value;
1020 pkt_dev->cur_udp_dst = value;
1021 }
1da177e4
LT		 1022 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1023 return count;
1024 }
1025 if (!strcmp(name, "clone_skb")) {
1026 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1027 if (len < 0)
222f1806 1028 return len;
63adc6fb 1029
1da177e4 1030 i += len;
222f1806
LC		 1031 pkt_dev->clone_skb = value;
1032
1da177e4
LT		 1033 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1034 return count;
1035 }
1036 if (!strcmp(name, "count")) {
1037 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1038 if (len < 0)
222f1806 1039 return len;
63adc6fb 1040
1da177e4
LT		 1041 i += len;
1042 pkt_dev->count = value;
1043 sprintf(pg_result, "OK: count=%llu",
222f1806 1044 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1045 return count;
1046 }
1047 if (!strcmp(name, "src_mac_count")) {
1048 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1049 if (len < 0)
222f1806 1050 return len;
63adc6fb 1051
1da177e4
LT		 1052 i += len;
1053 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1054 pkt_dev->src_mac_count = value;
1055 pkt_dev->cur_src_mac_offset = 0;
1056 }
1057 sprintf(pg_result, "OK: src_mac_count=%d",
1058 pkt_dev->src_mac_count);
1da177e4
LT		 1059 return count;
1060 }
1061 if (!strcmp(name, "dst_mac_count")) {
1062 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1063 if (len < 0)
222f1806 1064 return len;
63adc6fb 1065
1da177e4
LT		 1066 i += len;
1067 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1068 pkt_dev->dst_mac_count = value;
1069 pkt_dev->cur_dst_mac_offset = 0;
1070 }
1071 sprintf(pg_result, "OK: dst_mac_count=%d",
1072 pkt_dev->dst_mac_count);
1da177e4
LT		 1073 return count;
1074 }
1075 if (!strcmp(name, "flag")) {
222f1806
LC		 1076 char f[32];
1077 memset(f, 0, 32);
1da177e4 1078 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1079 if (len < 0)
222f1806 1080 return len;
63adc6fb 1081
1da177e4
LT		 1082 if (copy_from_user(f, &user_buffer[i], len))
1083 return -EFAULT;
1084 i += len;
222f1806
LC		 1085 if (strcmp(f, "IPSRC_RND") == 0)
1086 pkt_dev->flags |= F_IPSRC_RND;
1087
1088 else if (strcmp(f, "!IPSRC_RND") == 0)
1089 pkt_dev->flags &= ~F_IPSRC_RND;
1090
1091 else if (strcmp(f, "TXSIZE_RND") == 0)
1092 pkt_dev->flags |= F_TXSIZE_RND;
1093
1094 else if (strcmp(f, "!TXSIZE_RND") == 0)
1095 pkt_dev->flags &= ~F_TXSIZE_RND;
1096
1097 else if (strcmp(f, "IPDST_RND") == 0)
1098 pkt_dev->flags |= F_IPDST_RND;
1099
1100 else if (strcmp(f, "!IPDST_RND") == 0)
1101 pkt_dev->flags &= ~F_IPDST_RND;
1102
1103 else if (strcmp(f, "UDPSRC_RND") == 0)
1104 pkt_dev->flags |= F_UDPSRC_RND;
1105
1106 else if (strcmp(f, "!UDPSRC_RND") == 0)
1107 pkt_dev->flags &= ~F_UDPSRC_RND;
1108
1109 else if (strcmp(f, "UDPDST_RND") == 0)
1110 pkt_dev->flags |= F_UDPDST_RND;
1111
1112 else if (strcmp(f, "!UDPDST_RND") == 0)
1113 pkt_dev->flags &= ~F_UDPDST_RND;
1114
1115 else if (strcmp(f, "MACSRC_RND") == 0)
1116 pkt_dev->flags |= F_MACSRC_RND;
1117
1118 else if (strcmp(f, "!MACSRC_RND") == 0)
1119 pkt_dev->flags &= ~F_MACSRC_RND;
1120
1121 else if (strcmp(f, "MACDST_RND") == 0)
1122 pkt_dev->flags |= F_MACDST_RND;
1123
1124 else if (strcmp(f, "!MACDST_RND") == 0)
1125 pkt_dev->flags &= ~F_MACDST_RND;
1126
ca6549af
SW		 1127 else if (strcmp(f, "MPLS_RND") == 0)
1128 pkt_dev->flags |= F_MPLS_RND;
1129
1130 else if (strcmp(f, "!MPLS_RND") == 0)
1131 pkt_dev->flags &= ~F_MPLS_RND;
1132
34954ddc
FF		 1133 else if (strcmp(f, "VID_RND") == 0)
1134 pkt_dev->flags |= F_VID_RND;
1135
1136 else if (strcmp(f, "!VID_RND") == 0)
1137 pkt_dev->flags &= ~F_VID_RND;
1138
1139 else if (strcmp(f, "SVID_RND") == 0)
1140 pkt_dev->flags |= F_SVID_RND;
1141
1142 else if (strcmp(f, "!SVID_RND") == 0)
1143 pkt_dev->flags &= ~F_SVID_RND;
1144
007a531b
JHS		 1145 else if (strcmp(f, "FLOW_SEQ") == 0)
1146 pkt_dev->flags |= F_FLOW_SEQ;
1147
45b270f8
RO		 1148 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1149 pkt_dev->flags |= F_QUEUE_MAP_RND;
1150
1151 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1152 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1153
1154 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1155 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1156
1157 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1158 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1159#ifdef CONFIG_XFRM
1160 else if (strcmp(f, "IPSEC") == 0)
1161 pkt_dev->flags |= F_IPSEC_ON;
1162#endif
1163
1ca7768c
FF		 1164 else if (strcmp(f, "!IPV6") == 0)
1165 pkt_dev->flags &= ~F_IPV6;
1166
222f1806
LC		 1167 else {
1168 sprintf(pg_result,
1169 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1170 f,
1ca7768c 1171 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
a553e4a6 1172 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
222f1806
LC		 1173 return count;
1174 }
1da177e4
LT		 1175 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1176 return count;
1177 }
1178 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1179 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1180 if (len < 0)
222f1806 1181 return len;
1da177e4 1182
222f1806 1183 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1184 return -EFAULT;
222f1806
LC		 1185 buf[len] = 0;
1186 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1187 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1188 strncpy(pkt_dev->dst_min, buf, len);
1189 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1190 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1191 }
1192 if (debug)
25a8b254 1193 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1194 pkt_dev->dst_min);
1195 i += len;
1da177e4
LT		 1196 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1197 return count;
1198 }
1199 if (!strcmp(name, "dst_max")) {
1200 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1201 if (len < 0)
222f1806 1202 return len;
63adc6fb 1203
1da177e4 1204
222f1806 1205 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1206 return -EFAULT;
1207
222f1806
LC		 1208 buf[len] = 0;
1209 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1210 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1211 strncpy(pkt_dev->dst_max, buf, len);
1212 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1213 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1214 }
1215 if (debug)
25a8b254 1216 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1217 pkt_dev->dst_max);
1da177e4
LT		 1218 i += len;
1219 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1220 return count;
1221 }
1222 if (!strcmp(name, "dst6")) {
1223 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1224 if (len < 0)
1225 return len;
1da177e4
LT		 1226
1227 pkt_dev->flags |= F_IPV6;
1228
222f1806 1229 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1230 return -EFAULT;
222f1806 1231 buf[len] = 0;
1da177e4
LT		 1232
1233 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1234 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1235
1236 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1237
222f1806 1238 if (debug)
25a8b254 1239 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1240
222f1806 1241 i += len;
1da177e4
LT		 1242 sprintf(pg_result, "OK: dst6=%s", buf);
1243 return count;
1244 }
1245 if (!strcmp(name, "dst6_min")) {
1246 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1247 if (len < 0)
1248 return len;
1da177e4
LT		 1249
1250 pkt_dev->flags |= F_IPV6;
1251
222f1806 1252 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1253 return -EFAULT;
222f1806 1254 buf[len] = 0;
1da177e4
LT		 1255
1256 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1257 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1258
222f1806
LC		 1259 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1260 &pkt_dev->min_in6_daddr);
1261 if (debug)
25a8b254 1262 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1263
222f1806 1264 i += len;
1da177e4
LT		 1265 sprintf(pg_result, "OK: dst6_min=%s", buf);
1266 return count;
1267 }
1268 if (!strcmp(name, "dst6_max")) {
1269 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1270 if (len < 0)
1271 return len;
1da177e4
LT		 1272
1273 pkt_dev->flags |= F_IPV6;
1274
222f1806 1275 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1276 return -EFAULT;
222f1806 1277 buf[len] = 0;
1da177e4
LT		 1278
1279 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1280 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1281
222f1806 1282 if (debug)
25a8b254 1283 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1284
222f1806 1285 i += len;
1da177e4
LT		 1286 sprintf(pg_result, "OK: dst6_max=%s", buf);
1287 return count;
1288 }
1289 if (!strcmp(name, "src6")) {
1290 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1291 if (len < 0)
1292 return len;
1da177e4
LT		 1293
1294 pkt_dev->flags |= F_IPV6;
1295
222f1806 1296 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1297 return -EFAULT;
222f1806 1298 buf[len] = 0;
1da177e4
LT		 1299
1300 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1301 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1302
1303 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1304
222f1806 1305 if (debug)
25a8b254 1306 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1307
1308 i += len;
1da177e4
LT		 1309 sprintf(pg_result, "OK: src6=%s", buf);
1310 return count;
1311 }
1312 if (!strcmp(name, "src_min")) {
1313 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1314 if (len < 0)
222f1806 1315 return len;
63adc6fb 1316
222f1806 1317 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1318 return -EFAULT;
222f1806
LC		 1319 buf[len] = 0;
1320 if (strcmp(buf, pkt_dev->src_min) != 0) {
1321 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1322 strncpy(pkt_dev->src_min, buf, len);
1323 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1324 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1325 }
1326 if (debug)
25a8b254 1327 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1328 pkt_dev->src_min);
1da177e4
LT		 1329 i += len;
1330 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1331 return count;
1332 }
1333 if (!strcmp(name, "src_max")) {
1334 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1335 if (len < 0)
222f1806 1336 return len;
63adc6fb 1337
222f1806 1338 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1339 return -EFAULT;
222f1806
LC		 1340 buf[len] = 0;
1341 if (strcmp(buf, pkt_dev->src_max) != 0) {
1342 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1343 strncpy(pkt_dev->src_max, buf, len);
1344 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1345 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1346 }
1347 if (debug)
25a8b254 1348 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1349 pkt_dev->src_max);
1da177e4
LT		 1350 i += len;
1351 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1352 return count;
1353 }
1354 if (!strcmp(name, "dst_mac")) {
1355 char *v = valstr;
f404e9a6 1356 unsigned char old_dmac[ETH_ALEN];
1da177e4 1357 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1358 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1359
1da177e4 1360 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1361 if (len < 0)
222f1806 1362 return len;
63adc6fb 1363
1da177e4 1364 memset(valstr, 0, sizeof(valstr));
222f1806 1365 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1366 return -EFAULT;
1367 i += len;
1368
222f1806 1369 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1370 if (*v >= '0' && *v <= '9') {
1371 *m *= 16;
1372 *m += *v - '0';
1373 }
1374 if (*v >= 'A' && *v <= 'F') {
1375 *m *= 16;
1376 *m += *v - 'A' + 10;
1377 }
1378 if (*v >= 'a' && *v <= 'f') {
1379 *m *= 16;
1380 *m += *v - 'a' + 10;
1381 }
1382 if (*v == ':') {
1383 m++;
1384 *m = 0;
1385 }
1386 }
1387
1388 /* Set up Dest MAC */
f404e9a6
KK		 1389 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1390 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1391
1da177e4
LT		 1392 sprintf(pg_result, "OK: dstmac");
1393 return count;
1394 }
1395 if (!strcmp(name, "src_mac")) {
1396 char *v = valstr;
ce5d0b47 1397 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1398 unsigned char *m = pkt_dev->src_mac;
1399
ce5d0b47
AR		 1400 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1401
1da177e4 1402 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1403 if (len < 0)
222f1806 1404 return len;
63adc6fb 1405
1da177e4 1406 memset(valstr, 0, sizeof(valstr));
222f1806 1407 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1408 return -EFAULT;
1409 i += len;
1410
222f1806 1411 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1412 if (*v >= '0' && *v <= '9') {
1413 *m *= 16;
1414 *m += *v - '0';
1415 }
1416 if (*v >= 'A' && *v <= 'F') {
1417 *m *= 16;
1418 *m += *v - 'A' + 10;
1419 }
1420 if (*v >= 'a' && *v <= 'f') {
1421 *m *= 16;
1422 *m += *v - 'a' + 10;
1423 }
1424 if (*v == ':') {
1425 m++;
1426 *m = 0;
1427 }
222f1806 1428 }
1da177e4 1429
ce5d0b47
AR		 1430 /* Set up Src MAC */
1431 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1432 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1433
222f1806 1434 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1435 return count;
1436 }
1437
222f1806
LC		 1438 if (!strcmp(name, "clear_counters")) {
1439 pktgen_clear_counters(pkt_dev);
1440 sprintf(pg_result, "OK: Clearing counters.\n");
1441 return count;
1442 }
1da177e4
LT		 1443
1444 if (!strcmp(name, "flows")) {
1445 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1446 if (len < 0)
222f1806 1447 return len;
63adc6fb 1448
1da177e4
LT		 1449 i += len;
1450 if (value > MAX_CFLOWS)
1451 value = MAX_CFLOWS;
1452
1453 pkt_dev->cflows = value;
1454 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1455 return count;
1456 }
1457
1458 if (!strcmp(name, "flowlen")) {
1459 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1460 if (len < 0)
222f1806 1461 return len;
63adc6fb 1462
1da177e4
LT		 1463 i += len;
1464 pkt_dev->lflow = value;
1465 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1466 return count;
1467 }
222f1806 1468
45b270f8
RO		 1469 if (!strcmp(name, "queue_map_min")) {
1470 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1471 if (len < 0)
45b270f8 1472 return len;
63adc6fb 1473
45b270f8
RO		 1474 i += len;
1475 pkt_dev->queue_map_min = value;
1476 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1477 return count;
1478 }
1479
1480 if (!strcmp(name, "queue_map_max")) {
1481 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1482 if (len < 0)
45b270f8 1483 return len;
63adc6fb 1484
45b270f8
RO		 1485 i += len;
1486 pkt_dev->queue_map_max = value;
1487 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1488 return count;
1489 }
1490
ca6549af 1491 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1492 unsigned n, cnt;
1493
ca6549af 1494 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1495 if (len < 0)
1496 return len;
ca6549af 1497 i += len;
cfcabdcc 1498 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1499 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1500 cnt += sprintf(pg_result + cnt,
1501 "%08x%s", ntohl(pkt_dev->labels[n]),
1502 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1503
1504 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1505 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1506 pkt_dev->svlan_id = 0xffff;
1507
1508 if (debug)
25a8b254 1509 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1510 }
1511 return count;
1512 }
1513
1514 if (!strcmp(name, "vlan_id")) {
1515 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1516 if (len < 0)
34954ddc 1517 return len;
63adc6fb 1518
34954ddc
FF		 1519 i += len;
1520 if (value <= 4095) {
1521 pkt_dev->vlan_id = value; /* turn on VLAN */
1522
1523 if (debug)
25a8b254 1524 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1525
1526 if (debug && pkt_dev->nr_labels)
25a8b254 1527 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1528
1529 pkt_dev->nr_labels = 0; /* turn off MPLS */
1530 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1531 } else {
1532 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1533 pkt_dev->svlan_id = 0xffff;
1534
1535 if (debug)
25a8b254 1536 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1537 }
1538 return count;
1539 }
1540
1541 if (!strcmp(name, "vlan_p")) {
1542 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1543 if (len < 0)
34954ddc 1544 return len;
63adc6fb 1545
34954ddc
FF		 1546 i += len;
1547 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1548 pkt_dev->vlan_p = value;
1549 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1550 } else {
1551 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1552 }
1553 return count;
1554 }
1555
1556 if (!strcmp(name, "vlan_cfi")) {
1557 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1558 if (len < 0)
34954ddc 1559 return len;
63adc6fb 1560
34954ddc
FF		 1561 i += len;
1562 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1563 pkt_dev->vlan_cfi = value;
1564 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1565 } else {
1566 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1567 }
1568 return count;
1569 }
1570
1571 if (!strcmp(name, "svlan_id")) {
1572 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1573 if (len < 0)
34954ddc 1574 return len;
63adc6fb 1575
34954ddc
FF		 1576 i += len;
1577 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1578 pkt_dev->svlan_id = value; /* turn on SVLAN */
1579
1580 if (debug)
25a8b254 1581 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1582
1583 if (debug && pkt_dev->nr_labels)
25a8b254 1584 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1585
1586 pkt_dev->nr_labels = 0; /* turn off MPLS */
1587 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1588 } else {
1589 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1590 pkt_dev->svlan_id = 0xffff;
1591
1592 if (debug)
25a8b254 1593 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1594 }
1595 return count;
1596 }
1597
1598 if (!strcmp(name, "svlan_p")) {
1599 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1600 if (len < 0)
34954ddc 1601 return len;
63adc6fb 1602
34954ddc
FF		 1603 i += len;
1604 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1605 pkt_dev->svlan_p = value;
1606 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1607 } else {
1608 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1609 }
1610 return count;
1611 }
1612
1613 if (!strcmp(name, "svlan_cfi")) {
1614 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1615 if (len < 0)
34954ddc 1616 return len;
63adc6fb 1617
34954ddc
FF		 1618 i += len;
1619 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1620 pkt_dev->svlan_cfi = value;
1621 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1622 } else {
1623 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1624 }
ca6549af
SW		 1625 return count;
1626 }
1627
1ca7768c
FF		 1628 if (!strcmp(name, "tos")) {
1629 __u32 tmp_value = 0;
1630 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1631 if (len < 0)
1ca7768c 1632 return len;
63adc6fb 1633
1ca7768c
FF		 1634 i += len;
1635 if (len == 2) {
1636 pkt_dev->tos = tmp_value;
1637 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1638 } else {
1639 sprintf(pg_result, "ERROR: tos must be 00-ff");
1640 }
1641 return count;
1642 }
1643
1644 if (!strcmp(name, "traffic_class")) {
1645 __u32 tmp_value = 0;
1646 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1647 if (len < 0)
1ca7768c 1648 return len;
63adc6fb 1649
1ca7768c
FF		 1650 i += len;
1651 if (len == 2) {
1652 pkt_dev->traffic_class = tmp_value;
1653 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1654 } else {
1655 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1656 }
1657 return count;
1658 }
1659
1da177e4
LT		 1660 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1661 return -EINVAL;
1662}
1663
d50a6b56 1664static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1665{
d50a6b56
SH		 1666 return single_open(file, pktgen_if_show, PDE(inode)->data);
1667}
1da177e4 1668
9a32144e 1669static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1670 .owner = THIS_MODULE,
1671 .open = pktgen_if_open,
1672 .read = seq_read,
1673 .llseek = seq_lseek,
1674 .write = pktgen_if_write,
1675 .release = single_release,
d50a6b56 1676};
1da177e4 1677
d50a6b56
SH		 1678static int pktgen_thread_show(struct seq_file *seq, void *v)
1679{
222f1806 1680 struct pktgen_thread *t = seq->private;
648fda74 1681 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1682
1683 BUG_ON(!t);
1da177e4 1684
222f1806 1685 seq_printf(seq, "Running: ");
1da177e4 1686
222f1806 1687 if_lock(t);
c26a8016 1688 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1689 if (pkt_dev->running)
39df232f 1690 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4 1691
222f1806
LC		 1692 seq_printf(seq, "\nStopped: ");
1693
c26a8016 1694 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1695 if (!pkt_dev->running)
39df232f 1696 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4
LT		 1697
1698 if (t->result[0])
d50a6b56 1699 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1700 else
d50a6b56 1701 seq_printf(seq, "\nResult: NA\n");
1da177e4 1702
222f1806 1703 if_unlock(t);
1da177e4 1704
d50a6b56 1705 return 0;
1da177e4
LT		 1706}
1707
d50a6b56 1708static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1709 const char __user * user_buffer,
1710 size_t count, loff_t * offset)
1da177e4 1711{
222f1806
LC		 1712 struct seq_file *seq = (struct seq_file *)file->private_data;
1713 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1714 int i = 0, max, len, ret;
1715 char name[40];
222f1806 1716 char *pg_result;
d50a6b56 1717
1da177e4 1718 if (count < 1) {
222f1806 1719 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1720 return -EINVAL;
1721 }
d50a6b56 1722
1da177e4 1723 max = count - i;
222f1806
LC		 1724 len = count_trail_chars(&user_buffer[i], max);
1725 if (len < 0)
d50a6b56
SH		 1726 return len;
1727
1da177e4 1728 i += len;
d50a6b56 1729
1da177e4
LT		 1730 /* Read variable name */
1731
1732 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1733 if (len < 0)
d50a6b56 1734 return len;
222f1806 1735
1da177e4
LT		 1736 memset(name, 0, sizeof(name));
1737 if (copy_from_user(name, &user_buffer[i], len))
1738 return -EFAULT;
1739 i += len;
d50a6b56 1740
222f1806 1741 max = count - i;
1da177e4 1742 len = count_trail_chars(&user_buffer[i], max);
222f1806 1743 if (len < 0)
d50a6b56
SH		 1744 return len;
1745
1da177e4
LT		 1746 i += len;
1747
d50a6b56 1748 if (debug)
25a8b254
DM		 1749 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1750 name, (unsigned long)count);
1da177e4 1751
222f1806 1752 if (!t) {
25a8b254 1753 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1754 ret = -EINVAL;
1755 goto out;
1756 }
1757
1758 pg_result = &(t->result[0]);
1759
222f1806
LC		 1760 if (!strcmp(name, "add_device")) {
1761 char f[32];
1762 memset(f, 0, 32);
1da177e4 1763 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1764 if (len < 0) {
1765 ret = len;
1da177e4
LT		 1766 goto out;
1767 }
222f1806 1768 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1769 return -EFAULT;
1770 i += len;
6146e6a4 1771 mutex_lock(&pktgen_thread_lock);
222f1806 1772 pktgen_add_device(t, f);
6146e6a4 1773 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1774 ret = count;
1775 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1776 goto out;
1777 }
1778
222f1806 1779 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1780 mutex_lock(&pktgen_thread_lock);
95ed63f7 1781 t->control |= T_REMDEVALL;
6146e6a4 1782 mutex_unlock(&pktgen_thread_lock);
222f1806 1783 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1784 ret = count;
222f1806 1785 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1786 goto out;
1787 }
1788
222f1806 1789 if (!strcmp(name, "max_before_softirq")) {
b163911f 1790 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1791 ret = count;
1da177e4
LT		 1792 goto out;
1793 }
1794
1795 ret = -EINVAL;
222f1806 1796out:
1da177e4
LT		 1797 return ret;
1798}
1799
d50a6b56 1800static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1801{
d50a6b56 1802 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1803}
1804
9a32144e 1805static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1806 .owner = THIS_MODULE,
1807 .open = pktgen_thread_open,
1808 .read = seq_read,
1809 .llseek = seq_lseek,
1810 .write = pktgen_thread_write,
1811 .release = single_release,
d50a6b56 1812};
1da177e4
LT		 1813
1814/* Think find or remove for NN */
222f1806 1815static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1816{
1817 struct pktgen_thread *t;
1818 struct pktgen_dev *pkt_dev = NULL;
1819
cdcdbe0b 1820 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4
LT		 1821 pkt_dev = pktgen_find_dev(t, ifname);
1822 if (pkt_dev) {
222f1806
LC		 1823 if (remove) {
1824 if_lock(t);
1825 pkt_dev->removal_mark = 1;
1826 t->control |= T_REMDEV;
1827 if_unlock(t);
1828 }
1da177e4
LT		 1829 break;
1830 }
1da177e4 1831 }
222f1806 1832 return pkt_dev;
1da177e4
LT		 1833}
1834
95ed63f7
AK		 1835/*
1836 * mark a device for removal
1837 */
39df232f 1838static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1839{
1840 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1841 const int max_tries = 10, msec_per_try = 125;
1842 int i = 0;
95ed63f7 1843
6146e6a4 1844 mutex_lock(&pktgen_thread_lock);
25c4e53a 1845 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1846
222f1806 1847 while (1) {
95ed63f7
AK		 1848
1849 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1850 if (pkt_dev == NULL)
1851 break; /* success */
95ed63f7 1852
6146e6a4 1853 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1854 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1855 "to disappear....\n", ifname);
95ed63f7 1856 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1857 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1858
1859 if (++i >= max_tries) {
25a8b254
DM		 1860 printk(KERN_ERR "pktgen_mark_device: timed out after "
1861 "waiting %d msec for device %s to be removed\n",
222f1806 1862 msec_per_try * i, ifname);
95ed63f7
AK		 1863 break;
1864 }
1865
1866 }
1867
6146e6a4 1868 mutex_unlock(&pktgen_thread_lock);
39df232f 1869}
95ed63f7 1870
39df232f
SH		 1871static void pktgen_change_name(struct net_device *dev)
1872{
1873 struct pktgen_thread *t;
1874
1875 list_for_each_entry(t, &pktgen_threads, th_list) {
1876 struct pktgen_dev *pkt_dev;
1877
1878 list_for_each_entry(pkt_dev, &t->if_list, list) {
1879 if (pkt_dev->odev != dev)
1880 continue;
1881
1882 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1883
2975315b
AD		 1884 pkt_dev->entry = proc_create_data(dev->name, 0600,
1885 pg_proc_dir,
1886 &pktgen_if_fops,
1887 pkt_dev);
39df232f
SH		 1888 if (!pkt_dev->entry)
1889 printk(KERN_ERR "pktgen: can't move proc "
1890 " entry for '%s'\n", dev->name);
1891 break;
1892 }
1893 }
1da177e4
LT		 1894}
1895
222f1806
LC		 1896static int pktgen_device_event(struct notifier_block *unused,
1897 unsigned long event, void *ptr)
1da177e4 1898{
39df232f 1899 struct net_device *dev = ptr;
1da177e4 1900
721499e8 1901 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1902 return NOTIFY_DONE;
1903
1da177e4
LT		 1904 /* It is OK that we do not hold the group lock right now,
1905 * as we run under the RTNL lock.
1906 */
1907
1908 switch (event) {
39df232f
SH		 1909 case NETDEV_CHANGENAME:
1910 pktgen_change_name(dev);
1da177e4 1911 break;
222f1806 1912
1da177e4 1913 case NETDEV_UNREGISTER:
222f1806 1914 pktgen_mark_device(dev->name);
1da177e4 1915 break;
3ff50b79 1916 }
1da177e4
LT		 1917
1918 return NOTIFY_DONE;
1919}
1920
63adc6fb
SH		 1921static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1922 const char *ifname)
e6fce5b9
RO		 1923{
1924 char b[IFNAMSIZ+5];
1925 int i = 0;
1926
63adc6fb
SH		 1927 for (i = 0; ifname[i] != '@'; i++) {
1928 if (i == IFNAMSIZ)
e6fce5b9
RO		 1929 break;
1930
1931 b[i] = ifname[i];
1932 }
1933 b[i] = 0;
1934
1935 return dev_get_by_name(&init_net, b);
1936}
1937
1938
1da177e4
LT		 1939/* Associate pktgen_dev with a device. */
1940
39df232f 1941static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1942{
1da177e4 1943 struct net_device *odev;
39df232f 1944 int err;
1da177e4
LT		 1945
1946 /* Clean old setups */
1da177e4
LT		 1947 if (pkt_dev->odev) {
1948 dev_put(pkt_dev->odev);
222f1806
LC		 1949 pkt_dev->odev = NULL;
1950 }
1da177e4 1951
e6fce5b9 1952 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1953 if (!odev) {
25a8b254 1954 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 1955 return -ENODEV;
1da177e4 1956 }
39df232f 1957
1da177e4 1958 if (odev->type != ARPHRD_ETHER) {
25a8b254 1959 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1960 err = -EINVAL;
1961 } else if (!netif_running(odev)) {
25a8b254 1962 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 1963 err = -ENETDOWN;
1964 } else {
1965 pkt_dev->odev = odev;
1966 return 0;
1da177e4 1967 }
1da177e4 1968
1da177e4 1969 dev_put(odev);
39df232f 1970 return err;
1da177e4
LT		 1971}
1972
1973/* Read pkt_dev from the interface and set up internal pktgen_dev
1974 * structure to have the right information to create/send packets
1975 */
1976static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
1977{
64c00d81
AG		 1978 int ntxq;
1979
222f1806 1980 if (!pkt_dev->odev) {
25a8b254
DM		 1981 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
1982 "setup_inject.\n");
222f1806
LC		 1983 sprintf(pkt_dev->result,
1984 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
1985 return;
1986 }
1987
64c00d81
AG		 1988 /* make sure that we don't pick a non-existing transmit queue */
1989 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 1990
64c00d81
AG		 1991 if (ntxq <= pkt_dev->queue_map_min) {
1992 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 1993 "queue_map_min (zero-based) (%d) exceeds valid range "
1994 "[0 - %d] for (%d) queues on %s, resetting\n",
63adc6fb 1995 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
88271660 1996 pkt_dev->odev->name);
64c00d81
AG		 1997 pkt_dev->queue_map_min = ntxq - 1;
1998 }
88271660 1999 if (pkt_dev->queue_map_max >= ntxq) {
64c00d81 2000 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 2001 "queue_map_max (zero-based) (%d) exceeds valid range "
2002 "[0 - %d] for (%d) queues on %s, resetting\n",
63adc6fb 2003 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
88271660 2004 pkt_dev->odev->name);
64c00d81
AG		 2005 pkt_dev->queue_map_max = ntxq - 1;
2006 }
2007
222f1806 2008 /* Default to the interface's mac if not explicitly set. */
1da177e4 2009
f404e9a6 2010 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2011 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2012
222f1806 2013 /* Set up Dest MAC */
f404e9a6 2014 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2015
222f1806
LC		 2016 /* Set up pkt size */
2017 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2018
2019 if (pkt_dev->flags & F_IPV6) {
1da177e4 2020 /*
4ec93edb 2021 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2022 * gets exported
2023 */
2024
2025#ifdef NOTNOW
222f1806 2026 int i, set = 0, err = 1;
1da177e4
LT		 2027 struct inet6_dev *idev;
2028
222f1806
LC		 2029 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2030 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2031 set = 1;
2032 break;
2033 }
2034
222f1806
LC		 2035 if (!set) {
2036
1da177e4
LT		 2037 /*
2038 * Use linklevel address if unconfigured.
2039 *
2040 * use ipv6_get_lladdr if/when it's get exported
2041 */
2042
8814c4b5 2043 rcu_read_lock();
63adc6fb
SH		 2044 idev = __in6_dev_get(pkt_dev->odev);
2045 if (idev) {
1da177e4
LT		 2046 struct inet6_ifaddr *ifp;
2047
2048 read_lock_bh(&idev->lock);
222f1806
LC		 2049 for (ifp = idev->addr_list; ifp;
2050 ifp = ifp->if_next) {
2051 if (ifp->scope == IFA_LINK
2052 && !(ifp->
2053 flags & IFA_F_TENTATIVE)) {
2054 ipv6_addr_copy(&pkt_dev->
2055 cur_in6_saddr,
2056 &ifp->addr);
1da177e4
LT		 2057 err = 0;
2058 break;
2059 }
2060 }
2061 read_unlock_bh(&idev->lock);
2062 }
8814c4b5 2063 rcu_read_unlock();
222f1806 2064 if (err)
25a8b254
DM		 2065 printk(KERN_ERR "pktgen: ERROR: IPv6 link "
2066 "address not availble.\n");
1da177e4
LT		 2067 }
2068#endif
222f1806 2069 } else {
1da177e4
LT		 2070 pkt_dev->saddr_min = 0;
2071 pkt_dev->saddr_max = 0;
2072 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2073
2074 struct in_device *in_dev;
1da177e4
LT		 2075
2076 rcu_read_lock();
e5ed6399 2077 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2078 if (in_dev) {
2079 if (in_dev->ifa_list) {
222f1806
LC		 2080 pkt_dev->saddr_min =
2081 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2082 pkt_dev->saddr_max = pkt_dev->saddr_min;
2083 }
1da177e4
LT		 2084 }
2085 rcu_read_unlock();
222f1806 2086 } else {
1da177e4
LT		 2087 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2088 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2089 }
2090
2091 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2092 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2093 }
222f1806
LC		 2094 /* Initialize current values. */
2095 pkt_dev->cur_dst_mac_offset = 0;
2096 pkt_dev->cur_src_mac_offset = 0;
2097 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2098 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2099 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2100 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2101 pkt_dev->nflows = 0;
2102}
2103
fd29cf72
SH		 2104
2105static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2106{
2bc481cf
SH		 2107 ktime_t start;
2108 s32 remaining;
2109 struct hrtimer_sleeper t;
2110
2111 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2112 hrtimer_set_expires(&t.timer, spin_until);
2113
2114 remaining = ktime_to_us(hrtimer_expires_remaining(&t.timer));
2115 if (remaining <= 0)
2116 return;
2117
2118 start = ktime_now();
2119 if (remaining < 100)
2120 udelay(remaining); /* really small just spin */
2121 else {
2122 /* see do_nanosleep */
2123 hrtimer_init_sleeper(&t, current);
2124 do {
2125 set_current_state(TASK_INTERRUPTIBLE);
2126 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2127 if (!hrtimer_active(&t.timer))
2128 t.task = NULL;
2129
2130 if (likely(t.task))
1da177e4 2131 schedule();
1da177e4 2132
2bc481cf
SH		 2133 hrtimer_cancel(&t.timer);
2134 } while (t.task && pkt_dev->running && !signal_pending(current));
2135 __set_current_state(TASK_RUNNING);
1da177e4 2136 }
2bc481cf 2137 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), start));
1da177e4
LT		 2138}
2139
16dab72f
JHS		 2140static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2141{
a553e4a6 2142 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2143 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2144 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2145 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2146}
2147
648fda74 2148static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2149{
648fda74 2150 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2151}
2152
2153static inline int f_pick(struct pktgen_dev *pkt_dev)
2154{
2155 int flow = pkt_dev->curfl;
2156
2157 if (pkt_dev->flags & F_FLOW_SEQ) {
2158 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2159 /* reset time */
2160 pkt_dev->flows[flow].count = 0;
1211a645 2161 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2162 pkt_dev->curfl += 1;
2163 if (pkt_dev->curfl >= pkt_dev->cflows)
2164 pkt_dev->curfl = 0; /*reset */
2165 }
2166 } else {
2167 flow = random32() % pkt_dev->cflows;
1211a645 2168 pkt_dev->curfl = flow;
007a531b 2169
1211a645 2170 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2171 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2172 pkt_dev->flows[flow].flags = 0;
2173 }
007a531b
JHS		 2174 }
2175
2176 return pkt_dev->curfl;
2177}
2178
a553e4a6
JHS		 2179
2180#ifdef CONFIG_XFRM
2181/* If there was already an IPSEC SA, we keep it as is, else
2182 * we go look for it ...
2183*/
fea1ab0f 2184static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2185{
2186 struct xfrm_state *x = pkt_dev->flows[flow].x;
2187 if (!x) {
2188 /*slow path: we dont already have xfrm_state*/
5447c5e4
AD		 2189 x = xfrm_stateonly_find(&init_net,
2190 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2191 (xfrm_address_t *)&pkt_dev->cur_saddr,
2192 AF_INET,
2193 pkt_dev->ipsmode,
2194 pkt_dev->ipsproto, 0);
2195 if (x) {
2196 pkt_dev->flows[flow].x = x;
2197 set_pkt_overhead(pkt_dev);
63adc6fb 2198 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2199 }
2200
2201 }
2202}
2203#endif
fd2ea0a7
DM		 2204static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2205{
e6fce5b9
RO		 2206
2207 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2208 pkt_dev->cur_queue_map = smp_processor_id();
2209
2210 else if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2211 __u16 t;
2212 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2213 t = random32() %
2214 (pkt_dev->queue_map_max -
2215 pkt_dev->queue_map_min + 1)
2216 + pkt_dev->queue_map_min;
2217 } else {
2218 t = pkt_dev->cur_queue_map + 1;
2219 if (t > pkt_dev->queue_map_max)
2220 t = pkt_dev->queue_map_min;
2221 }
2222 pkt_dev->cur_queue_map = t;
2223 }
bfdbc0ac 2224 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2225}
2226
1da177e4
LT		 2227/* Increment/randomize headers according to flags and current values
2228 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2229 */
222f1806
LC		 2230static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2231{
2232 __u32 imn;
2233 __u32 imx;
2234 int flow = 0;
1da177e4 2235
007a531b
JHS		 2236 if (pkt_dev->cflows)
2237 flow = f_pick(pkt_dev);
1da177e4
LT		 2238
2239 /* Deal with source MAC */
222f1806
LC		 2240 if (pkt_dev->src_mac_count > 1) {
2241 __u32 mc;
2242 __u32 tmp;
2243
2244 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2245 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2246 else {
2247 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2248 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2249 pkt_dev->src_mac_count)
2250 pkt_dev->cur_src_mac_offset = 0;
2251 }
2252
2253 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2254 pkt_dev->hh[11] = tmp;
2255 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2256 pkt_dev->hh[10] = tmp;
2257 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2258 pkt_dev->hh[9] = tmp;
2259 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2260 pkt_dev->hh[8] = tmp;
2261 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2262 pkt_dev->hh[7] = tmp;
2263 }
2264
2265 /* Deal with Destination MAC */
2266 if (pkt_dev->dst_mac_count > 1) {
2267 __u32 mc;
2268 __u32 tmp;
2269
2270 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2271 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2272
2273 else {
2274 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2275 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2276 pkt_dev->dst_mac_count) {
2277 pkt_dev->cur_dst_mac_offset = 0;
2278 }
2279 }
2280
2281 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2282 pkt_dev->hh[5] = tmp;
2283 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2284 pkt_dev->hh[4] = tmp;
2285 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2286 pkt_dev->hh[3] = tmp;
2287 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2288 pkt_dev->hh[2] = tmp;
2289 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2290 pkt_dev->hh[1] = tmp;
2291 }
2292
ca6549af
SW		 2293 if (pkt_dev->flags & F_MPLS_RND) {
2294 unsigned i;
e71a4783 2295 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2296 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2297 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2298 ((__force __be32)random32() &
ca6549af
SW		 2299 htonl(0x000fffff));
2300 }
2301
34954ddc 2302 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2303 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2304 }
2305
2306 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2307 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2308 }
2309
222f1806
LC		 2310 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2311 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2312 pkt_dev->cur_udp_src = random32() %
2313 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2314 + pkt_dev->udp_src_min;
222f1806
LC		 2315
2316 else {
1da177e4
LT		 2317 pkt_dev->cur_udp_src++;
2318 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2319 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2320 }
2321 }
2322
2323 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2324 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2325 pkt_dev->cur_udp_dst = random32() %
2326 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2327 + pkt_dev->udp_dst_min;
222f1806 2328 } else {
1da177e4 2329 pkt_dev->cur_udp_dst++;
222f1806 2330 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2331 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2332 }
2333 }
1da177e4
LT		 2334
2335 if (!(pkt_dev->flags & F_IPV6)) {
2336
63adc6fb
SH		 2337 imn = ntohl(pkt_dev->saddr_min);
2338 imx = ntohl(pkt_dev->saddr_max);
2339 if (imn < imx) {
1da177e4 2340 __u32 t;
222f1806 2341 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2342 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2343 else {
2344 t = ntohl(pkt_dev->cur_saddr);
2345 t++;
63adc6fb 2346 if (t > imx)
1da177e4 2347 t = imn;
63adc6fb 2348
1da177e4
LT		 2349 }
2350 pkt_dev->cur_saddr = htonl(t);
2351 }
222f1806 2352
007a531b 2353 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2354 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2355 } else {
252e3346
AV		 2356 imn = ntohl(pkt_dev->daddr_min);
2357 imx = ntohl(pkt_dev->daddr_max);
2358 if (imn < imx) {
1da177e4 2359 __u32 t;
252e3346 2360 __be32 s;
1da177e4
LT		 2361 if (pkt_dev->flags & F_IPDST_RND) {
2362
5fa6fc76 2363 t = random32() % (imx - imn) + imn;
252e3346 2364 s = htonl(t);
1da177e4 2365
21cf2253
JP		 2366 while (ipv4_is_loopback(s) ||
2367 ipv4_is_multicast(s) ||
1e637c74 2368 ipv4_is_lbcast(s) ||
21cf2253
JP		 2369 ipv4_is_zeronet(s) ||
2370 ipv4_is_local_multicast(s)) {
5fa6fc76 2371 t = random32() % (imx - imn) + imn;
252e3346 2372 s = htonl(t);
1da177e4 2373 }
252e3346
AV		 2374 pkt_dev->cur_daddr = s;
2375 } else {
1da177e4
LT		 2376 t = ntohl(pkt_dev->cur_daddr);
2377 t++;
2378 if (t > imx) {
2379 t = imn;
2380 }
2381 pkt_dev->cur_daddr = htonl(t);
2382 }
2383 }
222f1806 2384 if (pkt_dev->cflows) {
007a531b 2385 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2386 pkt_dev->flows[flow].cur_daddr =
2387 pkt_dev->cur_daddr;
a553e4a6
JHS		 2388#ifdef CONFIG_XFRM
2389 if (pkt_dev->flags & F_IPSEC_ON)
2390 get_ipsec_sa(pkt_dev, flow);
2391#endif
1da177e4
LT		 2392 pkt_dev->nflows++;
2393 }
2394 }
222f1806
LC		 2395 } else { /* IPV6 * */
2396
2397 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2398 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2399 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2400 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2401 else {
2402 int i;
2403
2404 /* Only random destinations yet */
2405
222f1806 2406 for (i = 0; i < 4; i++) {
1da177e4 2407 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2408 (((__force __be32)random32() |
222f1806
LC		 2409 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2410 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2411 }
222f1806 2412 }
1da177e4
LT		 2413 }
2414
222f1806
LC		 2415 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2416 __u32 t;
2417 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2418 t = random32() %
2419 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2420 + pkt_dev->min_pkt_size;
222f1806 2421 } else {
1da177e4 2422 t = pkt_dev->cur_pkt_size + 1;
222f1806 2423 if (t > pkt_dev->max_pkt_size)
1da177e4 2424 t = pkt_dev->min_pkt_size;
222f1806
LC		 2425 }
2426 pkt_dev->cur_pkt_size = t;
2427 }
1da177e4 2428
fd2ea0a7 2429 set_cur_queue_map(pkt_dev);
45b270f8 2430
1da177e4
LT		 2431 pkt_dev->flows[flow].count++;
2432}
2433
a553e4a6
JHS		 2434
2435#ifdef CONFIG_XFRM
2436static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2437{
2438 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2439 int err = 0;
2440 struct iphdr *iph;
2441
2442 if (!x)
2443 return 0;
2444 /* XXX: we dont support tunnel mode for now until
2445 * we resolve the dst issue */
2446 if (x->props.mode != XFRM_MODE_TRANSPORT)
2447 return 0;
2448
2449 spin_lock(&x->lock);
2450 iph = ip_hdr(skb);
2451
13996378 2452 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2453 if (err)
2454 goto error;
2455 err = x->type->output(x, skb);
2456 if (err)
2457 goto error;
2458
63adc6fb 2459 x->curlft.bytes += skb->len;
a553e4a6 2460 x->curlft.packets++;
a553e4a6
JHS		 2461error:
2462 spin_unlock(&x->lock);
2463 return err;
2464}
2465
475ac1e4 2466static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2467{
2468 if (pkt_dev->cflows) {
2469 /* let go of the SAs if we have them */
2470 int i = 0;
5b5f792a 2471 for (; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2472 struct xfrm_state *x = pkt_dev->flows[i].x;
2473 if (x) {
2474 xfrm_state_put(x);
2475 pkt_dev->flows[i].x = NULL;
2476 }
2477 }
2478 }
2479}
2480
475ac1e4 2481static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2482 struct sk_buff *skb, __be16 protocol)
2483{
2484 if (pkt_dev->flags & F_IPSEC_ON) {
2485 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2486 int nhead = 0;
2487 if (x) {
2488 int ret;
2489 __u8 *eth;
2490 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2491 if (nhead > 0) {
a553e4a6
JHS		 2492 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2493 if (ret < 0) {
25a8b254 2494 printk(KERN_ERR "Error expanding "
63adc6fb 2495 "ipsec packet %d\n", ret);
b4bb4ac8 2496 goto err;
a553e4a6
JHS		 2497 }
2498 }
2499
2500 /* ipsec is not expecting ll header */
2501 skb_pull(skb, ETH_HLEN);
2502 ret = pktgen_output_ipsec(skb, pkt_dev);
2503 if (ret) {
25a8b254 2504 printk(KERN_ERR "Error creating ipsec "
63adc6fb 2505 "packet %d\n", ret);
b4bb4ac8 2506 goto err;
a553e4a6
JHS		 2507 }
2508 /* restore ll */
2509 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2510 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2511 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2512 }
2513 }
2514 return 1;
b4bb4ac8
IJ		 2515err:
2516 kfree_skb(skb);
2517 return 0;
a553e4a6
JHS		 2518}
2519#endif
2520
ca6549af
SW		 2521static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2522{
2523 unsigned i;
63adc6fb 2524 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2525 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2526
ca6549af
SW		 2527 mpls--;
2528 *mpls |= MPLS_STACK_BOTTOM;
2529}
2530
0f37c605
AV		 2531static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2532 unsigned int prio)
2533{
2534 return htons(id | (cfi << 12) | (prio << 13));
2535}
2536
222f1806
LC		 2537static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2538 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2539{
2540 struct sk_buff *skb = NULL;
2541 __u8 *eth;
2542 struct udphdr *udph;
2543 int datalen, iplen;
2544 struct iphdr *iph;
222f1806 2545 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2546 __be16 protocol = htons(ETH_P_IP);
ca6549af 2547 __be32 *mpls;
34954ddc
FF		 2548 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2549 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2550 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2551 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2552 u16 queue_map;
ca6549af
SW		 2553
2554 if (pkt_dev->nr_labels)
d5f1ce9a 2555 protocol = htons(ETH_P_MPLS_UC);
222f1806 2556
34954ddc 2557 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2558 protocol = htons(ETH_P_8021Q);
34954ddc 2559
64053bee
RO		 2560 /* Update any of the values, used when we're incrementing various
2561 * fields.
2562 */
fd2ea0a7 2563 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2564 mod_cur_headers(pkt_dev);
2565
7ac5459e 2566 datalen = (odev->hard_header_len + 16) & ~0xf;
e470757d
SH		 2567 skb = __netdev_alloc_skb(odev,
2568 pkt_dev->cur_pkt_size + 64
2569 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2570 if (!skb) {
2571 sprintf(pkt_dev->result, "No memory");
2572 return NULL;
2573 }
2574
7ac5459e 2575 skb_reserve(skb, datalen);
1da177e4
LT		 2576
2577 /* Reserve for ethernet and IP header */
2578 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2579 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2580 if (pkt_dev->nr_labels)
2581 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2582
2583 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2584 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2585 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2586 *svlan_tci = build_tci(pkt_dev->svlan_id,
2587 pkt_dev->svlan_cfi,
2588 pkt_dev->svlan_p);
34954ddc 2589 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2590 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2591 }
2592 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2593 *vlan_tci = build_tci(pkt_dev->vlan_id,
2594 pkt_dev->vlan_cfi,
2595 pkt_dev->vlan_p);
34954ddc 2596 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2597 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2598 }
2599
27a884dc 2600 skb->network_header = skb->tail;
b0e380b1 2601 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2602 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2603 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2604 iph = ip_hdr(skb);
2605 udph = udp_hdr(skb);
1da177e4 2606
1da177e4 2607 memcpy(eth, pkt_dev->hh, 12);
252e3346 2608 *(__be16 *) & eth[12] = protocol;
1da177e4 2609
ca6549af
SW		 2610 /* Eth + IPh + UDPh + mpls */
2611 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2612 pkt_dev->pkt_overhead;
222f1806 2613 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2614 datalen = sizeof(struct pktgen_hdr);
222f1806 2615
1da177e4
LT		 2616 udph->source = htons(pkt_dev->cur_udp_src);
2617 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2618 udph->len = htons(datalen + 8); /* DATA + udphdr */
2619 udph->check = 0; /* No checksum */
1da177e4
LT		 2620
2621 iph->ihl = 5;
2622 iph->version = 4;
2623 iph->ttl = 32;
1ca7768c 2624 iph->tos = pkt_dev->tos;
222f1806 2625 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2626 iph->saddr = pkt_dev->cur_saddr;
2627 iph->daddr = pkt_dev->cur_daddr;
2628 iph->frag_off = 0;
2629 iplen = 20 + 8 + datalen;
2630 iph->tot_len = htons(iplen);
2631 iph->check = 0;
222f1806 2632 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2633 skb->protocol = protocol;
b0e380b1 2634 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2635 pkt_dev->pkt_overhead);
1da177e4
LT		 2636 skb->dev = odev;
2637 skb->pkt_type = PACKET_HOST;
2638
222f1806
LC		 2639 if (pkt_dev->nfrags <= 0)
2640 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2641 else {
2642 int frags = pkt_dev->nfrags;
2643 int i;
2644
222f1806
LC		 2645 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2646
1da177e4
LT		 2647 if (frags > MAX_SKB_FRAGS)
2648 frags = MAX_SKB_FRAGS;
222f1806
LC		 2649 if (datalen > frags * PAGE_SIZE) {
2650 skb_put(skb, datalen - frags * PAGE_SIZE);
2651 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2652 }
2653
2654 i = 0;
2655 while (datalen > 0) {
2656 struct page *page = alloc_pages(GFP_KERNEL, 0);
2657 skb_shinfo(skb)->frags[i].page = page;
2658 skb_shinfo(skb)->frags[i].page_offset = 0;
2659 skb_shinfo(skb)->frags[i].size =
222f1806 2660 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2661 datalen -= skb_shinfo(skb)->frags[i].size;
2662 skb->len += skb_shinfo(skb)->frags[i].size;
2663 skb->data_len += skb_shinfo(skb)->frags[i].size;
2664 i++;
2665 skb_shinfo(skb)->nr_frags = i;
2666 }
2667
2668 while (i < frags) {
2669 int rem;
2670
2671 if (i == 0)
2672 break;
2673
2674 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2675 if (rem == 0)
2676 break;
2677
2678 skb_shinfo(skb)->frags[i - 1].size -= rem;
2679
222f1806
LC		 2680 skb_shinfo(skb)->frags[i] =
2681 skb_shinfo(skb)->frags[i - 1];
1da177e4 2682 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2683 skb_shinfo(skb)->frags[i].page =
2684 skb_shinfo(skb)->frags[i - 1].page;
2685 skb_shinfo(skb)->frags[i].page_offset +=
2686 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2687 skb_shinfo(skb)->frags[i].size = rem;
2688 i++;
2689 skb_shinfo(skb)->nr_frags = i;
2690 }
2691 }
2692
63adc6fb
SH		 2693 /* Stamp the time, and sequence number,
2694 * convert them to network byte order
2695 */
222f1806
LC		 2696 if (pgh) {
2697 struct timeval timestamp;
2698
2699 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2700 pgh->seq_num = htonl(pkt_dev->seq_num);
2701
2702 do_gettimeofday(&timestamp);
2703 pgh->tv_sec = htonl(timestamp.tv_sec);
2704 pgh->tv_usec = htonl(timestamp.tv_usec);
2705 }
1da177e4 2706
a553e4a6
JHS		 2707#ifdef CONFIG_XFRM
2708 if (!process_ipsec(pkt_dev, skb, protocol))
2709 return NULL;
2710#endif
2711
1da177e4
LT		 2712 return skb;
2713}
2714
2715/*
4ec93edb 2716 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2717 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2718 *
4ec93edb 2719 * Slightly modified for kernel.
1da177e4
LT		 2720 * Should be candidate for net/ipv4/utils.c
2721 * --ro
2722 */
2723
222f1806 2724static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2725{
2726 unsigned int i;
222f1806 2727 unsigned int len = 0;
1da177e4
LT		 2728 unsigned long u;
2729 char suffix[16];
222f1806
LC		 2730 unsigned int prefixlen = 0;
2731 unsigned int suffixlen = 0;
252e3346 2732 __be32 tmp;
cfcabdcc 2733 char *pos;
1da177e4 2734
222f1806
LC		 2735 for (i = 0; i < 16; i++)
2736 ip[i] = 0;
1da177e4
LT		 2737
2738 for (;;) {
2739 if (*s == ':') {
2740 len++;
222f1806
LC		 2741 if (s[1] == ':') { /* Found "::", skip to part 2 */
2742 s += 2;
1da177e4
LT		 2743 len++;
2744 break;
2745 }
2746 s++;
2747 }
1da177e4 2748
cfcabdcc
SH		 2749 u = simple_strtoul(s, &pos, 16);
2750 i = pos - s;
222f1806
LC		 2751 if (!i)
2752 return 0;
2753 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2754
2755 /* the last 4 bytes may be written as IPv4 address */
2756
2757 tmp = in_aton(s);
222f1806
LC		 2758 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2759 return i + len;
1da177e4
LT		 2760 }
2761 ip[prefixlen++] = (u >> 8);
2762 ip[prefixlen++] = (u & 255);
222f1806
LC		 2763 s += i;
2764 len += i;
2765 if (prefixlen == 16)
1da177e4
LT		 2766 return len;
2767 }
2768
2769/* part 2, after "::" */
2770 for (;;) {
2771 if (*s == ':') {
222f1806 2772 if (suffixlen == 0)
1da177e4
LT		 2773 break;
2774 s++;
2775 len++;
222f1806 2776 } else if (suffixlen != 0)
1da177e4 2777 break;
cfcabdcc
SH		 2778
2779 u = simple_strtol(s, &pos, 16);
2780 i = pos - s;
1da177e4 2781 if (!i) {
222f1806
LC		 2782 if (*s)
2783 len--;
1da177e4
LT		 2784 break;
2785 }
222f1806 2786 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2787 tmp = in_aton(s);
222f1806
LC		 2788 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2789 sizeof(tmp));
2790 suffixlen += 4;
2791 len += strlen(s);
1da177e4
LT		 2792 break;
2793 }
2794 suffix[suffixlen++] = (u >> 8);
2795 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2796 s += i;
2797 len += i;
2798 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2799 break;
2800 }
222f1806
LC		 2801 for (i = 0; i < suffixlen; i++)
2802 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2803 return len;
2804}
2805
222f1806
LC		 2806static char tohex(char hexdigit)
2807{
2808 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2809}
2810
222f1806
LC		 2811static int fmt_xlong(char *s, unsigned int i)
2812{
2813 char *bak = s;
2814 *s = tohex((i >> 12) & 0xf);
2815 if (s != bak || *s != '0')
2816 ++s;
2817 *s = tohex((i >> 8) & 0xf);
2818 if (s != bak || *s != '0')
2819 ++s;
2820 *s = tohex((i >> 4) & 0xf);
2821 if (s != bak || *s != '0')
2822 ++s;
2823 *s = tohex(i & 0xf);
2824 return s - bak + 1;
1da177e4
LT		 2825}
2826
222f1806
LC		 2827static unsigned int fmt_ip6(char *s, const char ip[16])
2828{
1da177e4
LT		 2829 unsigned int len;
2830 unsigned int i;
2831 unsigned int temp;
2832 unsigned int compressing;
2833 int j;
2834
222f1806
LC		 2835 len = 0;
2836 compressing = 0;
2837 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2838
2839#ifdef V4MAPPEDPREFIX
222f1806
LC		 2840 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2841 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2842 temp = strlen(s);
2843 return len + temp;
1da177e4
LT		 2844 }
2845#endif
222f1806
LC		 2846 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2847 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2848 if (temp == 0) {
2849 if (!compressing) {
222f1806
LC		 2850 compressing = 1;
2851 if (j == 0) {
2852 *s++ = ':';
2853 ++len;
1da177e4
LT		 2854 }
2855 }
2856 } else {
2857 if (compressing) {
222f1806
LC		 2858 compressing = 0;
2859 *s++ = ':';
2860 ++len;
1da177e4 2861 }
222f1806
LC		 2862 i = fmt_xlong(s, temp);
2863 len += i;
2864 s += i;
2865 if (j < 14) {
1da177e4
LT		 2866 *s++ = ':';
2867 ++len;
2868 }
2869 }
2870 }
2871 if (compressing) {
222f1806
LC		 2872 *s++ = ':';
2873 ++len;
1da177e4 2874 }
222f1806 2875 *s = 0;
1da177e4
LT		 2876 return len;
2877}
2878
222f1806
LC		 2879static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2880 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2881{
2882 struct sk_buff *skb = NULL;
2883 __u8 *eth;
2884 struct udphdr *udph;
2885 int datalen;
2886 struct ipv6hdr *iph;
222f1806 2887 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2888 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2889 __be32 *mpls;
34954ddc
FF		 2890 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2891 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2892 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2893 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2894 u16 queue_map;
ca6549af
SW		 2895
2896 if (pkt_dev->nr_labels)
d5f1ce9a 2897 protocol = htons(ETH_P_MPLS_UC);
64053bee 2898
34954ddc 2899 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2900 protocol = htons(ETH_P_8021Q);
34954ddc 2901
64053bee
RO		 2902 /* Update any of the values, used when we're incrementing various
2903 * fields.
2904 */
fd2ea0a7 2905 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2906 mod_cur_headers(pkt_dev);
2907
e470757d
SH		 2908 skb = __netdev_alloc_skb(odev,
2909 pkt_dev->cur_pkt_size + 64
2910 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2911 if (!skb) {
2912 sprintf(pkt_dev->result, "No memory");
2913 return NULL;
2914 }
2915
2916 skb_reserve(skb, 16);
2917
2918 /* Reserve for ethernet and IP header */
2919 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2920 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2921 if (pkt_dev->nr_labels)
2922 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2923
2924 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2925 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2926 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2927 *svlan_tci = build_tci(pkt_dev->svlan_id,
2928 pkt_dev->svlan_cfi,
2929 pkt_dev->svlan_p);
34954ddc 2930 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2931 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2932 }
2933 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2934 *vlan_tci = build_tci(pkt_dev->vlan_id,
2935 pkt_dev->vlan_cfi,
2936 pkt_dev->vlan_p);
34954ddc 2937 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2938 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2939 }
2940
27a884dc 2941 skb->network_header = skb->tail;
b0e380b1 2942 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2943 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2944 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2945 iph = ipv6_hdr(skb);
2946 udph = udp_hdr(skb);
1da177e4 2947
1da177e4 2948 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2949 *(__be16 *) &eth[12] = protocol;
64053bee 2950
ca6549af
SW		 2951 /* Eth + IPh + UDPh + mpls */
2952 datalen = pkt_dev->cur_pkt_size - 14 -
2953 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2954 pkt_dev->pkt_overhead;
1da177e4 2955
222f1806 2956 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2957 datalen = sizeof(struct pktgen_hdr);
2958 if (net_ratelimit())
222f1806
LC		 2959 printk(KERN_INFO "pktgen: increased datalen to %d\n",
2960 datalen);
1da177e4
LT		 2961 }
2962
2963 udph->source = htons(pkt_dev->cur_udp_src);
2964 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2965 udph->len = htons(datalen + sizeof(struct udphdr));
2966 udph->check = 0; /* No checksum */
1da177e4 2967
d5f1ce9a 2968 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2969
1ca7768c
FF		 2970 if (pkt_dev->traffic_class) {
2971 /* Version + traffic class + flow (0) */
252e3346 2972 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2973 }
2974
1da177e4
LT		 2975 iph->hop_limit = 32;
2976
2977 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2978 iph->nexthdr = IPPROTO_UDP;
2979
2980 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2981 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2982
b0e380b1 2983 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2984 pkt_dev->pkt_overhead);
ca6549af 2985 skb->protocol = protocol;
1da177e4
LT		 2986 skb->dev = odev;
2987 skb->pkt_type = PACKET_HOST;
2988
222f1806
LC		 2989 if (pkt_dev->nfrags <= 0)
2990 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2991 else {
2992 int frags = pkt_dev->nfrags;
2993 int i;
2994
222f1806
LC		 2995 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2996
1da177e4
LT		 2997 if (frags > MAX_SKB_FRAGS)
2998 frags = MAX_SKB_FRAGS;
222f1806
LC		 2999 if (datalen > frags * PAGE_SIZE) {
3000 skb_put(skb, datalen - frags * PAGE_SIZE);
3001 datalen = frags * PAGE_SIZE;
1da177e4
LT		 3002 }
3003
3004 i = 0;
3005 while (datalen > 0) {
3006 struct page *page = alloc_pages(GFP_KERNEL, 0);
3007 skb_shinfo(skb)->frags[i].page = page;
3008 skb_shinfo(skb)->frags[i].page_offset = 0;
3009 skb_shinfo(skb)->frags[i].size =
222f1806 3010 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 3011 datalen -= skb_shinfo(skb)->frags[i].size;
3012 skb->len += skb_shinfo(skb)->frags[i].size;
3013 skb->data_len += skb_shinfo(skb)->frags[i].size;
3014 i++;
3015 skb_shinfo(skb)->nr_frags = i;
3016 }
3017
3018 while (i < frags) {
3019 int rem;
3020
3021 if (i == 0)
3022 break;
3023
3024 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
3025 if (rem == 0)
3026 break;
3027
3028 skb_shinfo(skb)->frags[i - 1].size -= rem;
3029
222f1806
LC		 3030 skb_shinfo(skb)->frags[i] =
3031 skb_shinfo(skb)->frags[i - 1];
1da177e4 3032 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3033 skb_shinfo(skb)->frags[i].page =
3034 skb_shinfo(skb)->frags[i - 1].page;
3035 skb_shinfo(skb)->frags[i].page_offset +=
3036 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3037 skb_shinfo(skb)->frags[i].size = rem;
3038 i++;
3039 skb_shinfo(skb)->nr_frags = i;
3040 }
3041 }
3042
63adc6fb
SH		 3043 /* Stamp the time, and sequence number,
3044 * convert them to network byte order
3045 * should we update cloned packets too ?
3046 */
222f1806
LC		 3047 if (pgh) {
3048 struct timeval timestamp;
3049
3050 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3051 pgh->seq_num = htonl(pkt_dev->seq_num);
3052
3053 do_gettimeofday(&timestamp);
3054 pgh->tv_sec = htonl(timestamp.tv_sec);
3055 pgh->tv_usec = htonl(timestamp.tv_usec);
3056 }
34954ddc 3057 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3058
1da177e4
LT		 3059 return skb;
3060}
3061
475ac1e4
SH		 3062static struct sk_buff *fill_packet(struct net_device *odev,
3063 struct pktgen_dev *pkt_dev)
1da177e4 3064{
222f1806 3065 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3066 return fill_packet_ipv6(odev, pkt_dev);
3067 else
3068 return fill_packet_ipv4(odev, pkt_dev);
3069}
3070
222f1806 3071static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3072{
222f1806
LC		 3073 pkt_dev->seq_num = 1;
3074 pkt_dev->idle_acc = 0;
1da177e4 3075 pkt_dev->sofar = 0;
222f1806
LC		 3076 pkt_dev->tx_bytes = 0;
3077 pkt_dev->errors = 0;
1da177e4
LT		 3078}
3079
3080/* Set up structure for sending pkts, clear counters */
3081
3082static void pktgen_run(struct pktgen_thread *t)
3083{
c26a8016 3084 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3085 int started = 0;
3086
25c4e53a 3087 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 3088
3089 if_lock(t);
c26a8016 3090 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3091
3092 /*
3093 * setup odev and create initial packet.
3094 */
3095 pktgen_setup_inject(pkt_dev);
3096
222f1806 3097 if (pkt_dev->odev) {
1da177e4 3098 pktgen_clear_counters(pkt_dev);
222f1806 3099 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3100 pkt_dev->skb = NULL;
fd29cf72
SH		 3101 pkt_dev->started_at =
3102 pkt_dev->next_tx = ktime_now();
3103
16dab72f 3104 set_pkt_overhead(pkt_dev);
222f1806 3105
1da177e4
LT		 3106 strcpy(pkt_dev->result, "Starting");
3107 started++;
222f1806 3108 } else
1da177e4
LT		 3109 strcpy(pkt_dev->result, "Error starting");
3110 }
3111 if_unlock(t);
222f1806
LC		 3112 if (started)
3113 t->control &= ~(T_STOP);
1da177e4
LT		 3114}
3115
3116static void pktgen_stop_all_threads_ifs(void)
3117{
cdcdbe0b 3118 struct pktgen_thread *t;
1da177e4 3119
25c4e53a 3120 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3121
6146e6a4 3122 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3123
3124 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3125 t->control |= T_STOP;
cdcdbe0b 3126
6146e6a4 3127 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3128}
3129
648fda74 3130static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3131{
648fda74 3132 const struct pktgen_dev *pkt_dev;
1da177e4 3133
c26a8016 3134 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3135 if (pkt_dev->running)
3136 return 1;
3137 return 0;
1da177e4
LT		 3138}
3139
222f1806 3140static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3141{
222f1806 3142 if_lock(t);
1da177e4 3143
222f1806 3144 while (thread_is_running(t)) {
1da177e4 3145
222f1806 3146 if_unlock(t);
1da177e4 3147
222f1806 3148 msleep_interruptible(100);
1da177e4 3149
222f1806
LC		 3150 if (signal_pending(current))
3151 goto signal;
3152 if_lock(t);
3153 }
3154 if_unlock(t);
3155 return 1;
3156signal:
3157 return 0;
1da177e4
LT		 3158}
3159
3160static int pktgen_wait_all_threads_run(void)
3161{
cdcdbe0b 3162 struct pktgen_thread *t;
1da177e4 3163 int sig = 1;
222f1806 3164
6146e6a4 3165 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3166
3167 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3168 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3169 if (sig == 0)
3170 break;
1da177e4 3171 }
cdcdbe0b
LC		 3172
3173 if (sig == 0)
3174 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3175 t->control |= (T_STOP);
cdcdbe0b 3176
6146e6a4 3177 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3178 return sig;
3179}
3180
3181static void pktgen_run_all_threads(void)
3182{
cdcdbe0b 3183 struct pktgen_thread *t;
1da177e4 3184
25c4e53a 3185 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3186
6146e6a4 3187 mutex_lock(&pktgen_thread_lock);
1da177e4 3188
cdcdbe0b 3189 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3190 t->control |= (T_RUN);
cdcdbe0b 3191
6146e6a4 3192 mutex_unlock(&pktgen_thread_lock);
1da177e4 3193
63adc6fb
SH		 3194 /* Propagate thread->control */
3195 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3196
1da177e4
LT		 3197 pktgen_wait_all_threads_run();
3198}
3199
eb37b41c
JB		 3200static void pktgen_reset_all_threads(void)
3201{
3202 struct pktgen_thread *t;
3203
3204 pr_debug("pktgen: entering pktgen_reset_all_threads.\n");
3205
3206 mutex_lock(&pktgen_thread_lock);
3207
3208 list_for_each_entry(t, &pktgen_threads, th_list)
3209 t->control |= (T_REMDEVALL);
3210
3211 mutex_unlock(&pktgen_thread_lock);
3212
63adc6fb
SH		 3213 /* Propagate thread->control */
3214 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3215
3216 pktgen_wait_all_threads_run();
3217}
3218
1da177e4
LT		 3219static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3220{
fd29cf72 3221 __u64 bps, mbps, pps;
222f1806 3222 char *p = pkt_dev->result;
fd29cf72
SH		 3223 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3224 pkt_dev->started_at);
3225 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3226
3227 p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
3228 (unsigned long long)ktime_to_us(elapsed),
3229 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3230 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3231 (unsigned long long)pkt_dev->sofar,
3232 pkt_dev->cur_pkt_size, nr_frags);
3233
fd29cf72
SH		 3234 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3235 ktime_to_ns(elapsed));
222f1806
LC		 3236
3237 bps = pps * 8 * pkt_dev->cur_pkt_size;
3238
3239 mbps = bps;
3240 do_div(mbps, 1000000);
3241 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3242 (unsigned long long)pps,
3243 (unsigned long long)mbps,
3244 (unsigned long long)bps,
3245 (unsigned long long)pkt_dev->errors);
1da177e4 3246}
1da177e4
LT		 3247
3248/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3249static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3250{
222f1806 3251 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3252
222f1806 3253 if (!pkt_dev->running) {
25a8b254
DM		 3254 printk(KERN_WARNING "pktgen: interface: %s is already "
3255 "stopped\n", pkt_dev->odev->name);
222f1806
LC		 3256 return -EINVAL;
3257 }
1da177e4 3258
3bda06a3
SH		 3259 kfree_skb(pkt_dev->skb);
3260 pkt_dev->skb = NULL;
fd29cf72 3261 pkt_dev->stopped_at = ktime_now();
222f1806 3262 pkt_dev->running = 0;
1da177e4 3263
95ed63f7 3264 show_results(pkt_dev, nr_frags);
1da177e4 3265
222f1806 3266 return 0;
1da177e4
LT		 3267}
3268
222f1806 3269static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3270{
c26a8016 3271 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3272
1da177e4
LT		 3273 if_lock(t);
3274
c26a8016
LC		 3275 list_for_each_entry(pkt_dev, &t->if_list, list) {
3276 if (!pkt_dev->running)
222f1806
LC		 3277 continue;
3278 if (best == NULL)
c26a8016 3279 best = pkt_dev;
fd29cf72 3280 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3281 best = pkt_dev;
1da177e4
LT		 3282 }
3283 if_unlock(t);
222f1806 3284 return best;
1da177e4
LT		 3285}
3286
222f1806
LC		 3287static void pktgen_stop(struct pktgen_thread *t)
3288{
c26a8016 3289 struct pktgen_dev *pkt_dev;
1da177e4 3290
25c4e53a 3291 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3292
222f1806 3293 if_lock(t);
1da177e4 3294
c26a8016
LC		 3295 list_for_each_entry(pkt_dev, &t->if_list, list) {
3296 pktgen_stop_device(pkt_dev);
95ed63f7 3297 }
1da177e4 3298
222f1806 3299 if_unlock(t);
1da177e4
LT		 3300}
3301
95ed63f7
AK		 3302/*
3303 * one of our devices needs to be removed - find it
3304 * and remove it
3305 */
3306static void pktgen_rem_one_if(struct pktgen_thread *t)
3307{
c26a8016
LC		 3308 struct list_head *q, *n;
3309 struct pktgen_dev *cur;
95ed63f7 3310
25c4e53a 3311 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3312
3313 if_lock(t);
3314
c26a8016
LC		 3315 list_for_each_safe(q, n, &t->if_list) {
3316 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3317
222f1806
LC		 3318 if (!cur->removal_mark)
3319 continue;
95ed63f7 3320
86dc1ad2 3321 kfree_skb(cur->skb);
95ed63f7
AK		 3322 cur->skb = NULL;
3323
3324 pktgen_remove_device(t, cur);
3325
3326 break;
3327 }
3328
3329 if_unlock(t);
3330}
3331
222f1806 3332static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3333{
c26a8016
LC		 3334 struct list_head *q, *n;
3335 struct pktgen_dev *cur;
222f1806
LC		 3336
3337 /* Remove all devices, free mem */
95ed63f7 3338
25c4e53a 3339 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3340 if_lock(t);
1da177e4 3341
c26a8016
LC		 3342 list_for_each_safe(q, n, &t->if_list) {
3343 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3344
86dc1ad2 3345 kfree_skb(cur->skb);
95ed63f7
AK		 3346 cur->skb = NULL;
3347
1da177e4
LT		 3348 pktgen_remove_device(t, cur);
3349 }
3350
222f1806 3351 if_unlock(t);
1da177e4
LT		 3352}
3353
222f1806 3354static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3355{
222f1806 3356 /* Remove from the thread list */
1da177e4 3357
ee74baa7 3358 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3359
6146e6a4 3360 mutex_lock(&pktgen_thread_lock);
1da177e4 3361
cdcdbe0b
LC		 3362 list_del(&t->th_list);
3363
6146e6a4 3364 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3365}
3366
3791decb
SH		 3367static void idle(struct pktgen_dev *pkt_dev)
3368{
fd29cf72 3369 ktime_t idle_start = ktime_now();
3791decb
SH		 3370
3371 if (need_resched())
3372 schedule();
3373 else
3374 cpu_relax();
3375
fd29cf72 3376 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3377}
3378
fd29cf72 3379
475ac1e4 3380static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3381{
00829823 3382 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3383 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3384 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3385 struct netdev_queue *txq;
fd2ea0a7 3386 u16 queue_map;
1da177e4
LT		 3387 int ret;
3388
fd29cf72 3389 if (pkt_dev->delay) {
2bc481cf 3390 spin(pkt_dev, pkt_dev->next_tx);
1da177e4
LT		 3391
3392 /* This is max DELAY, this has special meaning of
3393 * "never transmit"
3394 */
fd29cf72
SH		 3395 if (pkt_dev->delay == ULLONG_MAX) {
3396 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3397 return;
1da177e4
LT		 3398 }
3399 }
222f1806 3400
fd2ea0a7
DM		 3401 if (!pkt_dev->skb) {
3402 set_cur_queue_map(pkt_dev);
3403 queue_map = pkt_dev->cur_queue_map;
3404 } else {
3405 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3406 }
3407
3408 txq = netdev_get_tx_queue(odev, queue_map);
3791decb
SH		 3409 /* Did we saturate the queue already? */
3410 if (netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)) {
3411 /* If device is down, then all queues are permnantly frozen */
3412 if (netif_running(odev))
3413 idle(pkt_dev);
3414 else
1da177e4 3415 pktgen_stop_device(pkt_dev);
3791decb 3416 return;
1da177e4 3417 }
222f1806 3418
7d7bb1cf
SH		 3419 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3420 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3421 /* build a new pkt */
3422 kfree_skb(pkt_dev->skb);
3423
3424 pkt_dev->skb = fill_packet(odev, pkt_dev);
3425 if (pkt_dev->skb == NULL) {
3426 printk(KERN_ERR "pktgen: ERROR: couldn't "
3427 "allocate skb in fill_packet.\n");
3428 schedule();
3429 pkt_dev->clone_count--; /* back out increment, OOM */
3430 return;
1da177e4 3431 }
7d7bb1cf
SH		 3432
3433 pkt_dev->allocated_skbs++;
3434 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3435 }
95ed63f7 3436
fd2ea0a7
DM		 3437 /* fill_packet() might have changed the queue */
3438 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3439 txq = netdev_get_tx_queue(odev, queue_map);
3440
3441 __netif_tx_lock_bh(txq);
3791decb
SH		 3442 if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)))
3443 pkt_dev->last_ok = 0;
3444 else {
1da177e4 3445 atomic_inc(&(pkt_dev->skb->users));
5b8db2f5
SH		 3446
3447 retry_now:
00829823 3448 ret = (*xmit)(pkt_dev->skb, odev);
5b8db2f5
SH		 3449 switch (ret) {
3450 case NETDEV_TX_OK:
08baf561 3451 txq_trans_update(txq);
222f1806 3452 pkt_dev->last_ok = 1;
1da177e4
LT		 3453 pkt_dev->sofar++;
3454 pkt_dev->seq_num++;
3455 pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
5b8db2f5
SH		 3456 break;
3457 case NETDEV_TX_LOCKED:
1da177e4
LT		 3458 cpu_relax();
3459 goto retry_now;
5b8db2f5
SH		 3460 default: /* Drivers are not supposed to return other values! */
3461 if (net_ratelimit())
3462 pr_info("pktgen: %s xmit error: %d\n",
3463 odev->name, ret);
1da177e4 3464 pkt_dev->errors++;
5b8db2f5
SH		 3465 /* fallthru */
3466 case NETDEV_TX_BUSY:
3467 /* Retry it next time */
3468 atomic_dec(&(pkt_dev->skb->users));
1da177e4
LT		 3469 pkt_dev->last_ok = 0;
3470 }
3471
fd29cf72
SH		 3472 if (pkt_dev->delay)
3473 pkt_dev->next_tx = ktime_add_ns(ktime_now(),
3474 pkt_dev->delay);
222f1806 3475 }
fd2ea0a7 3476 __netif_tx_unlock_bh(txq);
222f1806 3477
1da177e4
LT		 3478 /* If pkt_dev->count is zero, then run forever */
3479 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
64e8ff5e
SH		 3480 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3481 if (signal_pending(current))
3482 break;
3483 idle(pkt_dev);
1da177e4 3484 }
222f1806 3485
1da177e4
LT		 3486 /* Done with this */
3487 pktgen_stop_device(pkt_dev);
222f1806 3488 }
222f1806 3489}
1da177e4 3490
4ec93edb 3491/*
1da177e4
LT		 3492 * Main loop of the thread goes here
3493 */
3494
ee74baa7 3495static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3496{
3497 DEFINE_WAIT(wait);
ee74baa7 3498 struct pktgen_thread *t = arg;
222f1806 3499 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3500 int cpu = t->cpu;
1da177e4 3501
ee74baa7 3502 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3503
3504 init_waitqueue_head(&t->queue);
d3ede327 3505 complete(&t->start_done);
1da177e4 3506
63adc6fb
SH		 3507 pr_debug("pktgen: starting pktgen/%d: pid=%d\n",
3508 cpu, task_pid_nr(current));
1da177e4 3509
ee74baa7 3510 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3511
83144186
RW		 3512 set_freezable();
3513
ee74baa7
DM		 3514 while (!kthread_should_stop()) {
3515 pkt_dev = next_to_run(t);
1da177e4 3516
ee74baa7
DM		 3517 if (!pkt_dev &&
3518 (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
3519 == 0) {
3520 prepare_to_wait(&(t->queue), &wait,
3521 TASK_INTERRUPTIBLE);
3522 schedule_timeout(HZ / 10);
3523 finish_wait(&(t->queue), &wait);
3524 }
1da177e4 3525
ee74baa7 3526 __set_current_state(TASK_RUNNING);
222f1806 3527
b163911f 3528 if (pkt_dev)
1da177e4
LT		 3529 pktgen_xmit(pkt_dev);
3530
222f1806 3531 if (t->control & T_STOP) {
1da177e4
LT		 3532 pktgen_stop(t);
3533 t->control &= ~(T_STOP);
3534 }
3535
222f1806 3536 if (t->control & T_RUN) {
1da177e4
LT		 3537 pktgen_run(t);
3538 t->control &= ~(T_RUN);
3539 }
3540
222f1806 3541 if (t->control & T_REMDEVALL) {
1da177e4 3542 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3543 t->control &= ~(T_REMDEVALL);
3544 }
3545
222f1806 3546 if (t->control & T_REMDEV) {
95ed63f7 3547 pktgen_rem_one_if(t);
1da177e4
LT		 3548 t->control &= ~(T_REMDEV);
3549 }
3550
09fe3ef4
AM		 3551 try_to_freeze();
3552
ee74baa7 3553 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3554 }
1da177e4 3555
25c4e53a 3556 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3557 pktgen_stop(t);
1da177e4 3558
25c4e53a 3559 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3560 pktgen_rem_all_ifs(t);
1da177e4 3561
25c4e53a 3562 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3563 pktgen_rem_thread(t);
cdcdbe0b 3564
ee74baa7 3565 return 0;
1da177e4
LT		 3566}
3567
222f1806
LC		 3568static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3569 const char *ifname)
1da177e4 3570{
c26a8016 3571 struct pktgen_dev *p, *pkt_dev = NULL;
222f1806
LC		 3572 if_lock(t);
3573
c26a8016 3574 list_for_each_entry(p, &t->if_list, list)
39df232f 3575 if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
c26a8016 3576 pkt_dev = p;
222f1806
LC		 3577 break;
3578 }
222f1806
LC		 3579
3580 if_unlock(t);
25c4e53a 3581 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3582 return pkt_dev;
1da177e4
LT		 3583}
3584
4ec93edb
YH		 3585/*
3586 * Adds a dev at front of if_list.
1da177e4
LT		 3587 */
3588
222f1806
LC		 3589static int add_dev_to_thread(struct pktgen_thread *t,
3590 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3591{
3592 int rv = 0;
222f1806
LC		 3593
3594 if_lock(t);
3595
3596 if (pkt_dev->pg_thread) {
25a8b254
DM		 3597 printk(KERN_ERR "pktgen: ERROR: already assigned "
3598 "to a thread.\n");
222f1806
LC		 3599 rv = -EBUSY;
3600 goto out;
3601 }
c26a8016
LC		 3602
3603 list_add(&pkt_dev->list, &t->if_list);
222f1806 3604 pkt_dev->pg_thread = t;
1da177e4
LT		 3605 pkt_dev->running = 0;
3606
222f1806
LC		 3607out:
3608 if_unlock(t);
3609 return rv;
1da177e4
LT		 3610}
3611
3612/* Called under thread lock */
3613
222f1806 3614static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3615{
222f1806 3616 struct pktgen_dev *pkt_dev;
39df232f 3617 int err;
222f1806 3618
1da177e4
LT		 3619 /* We don't allow a device to be on several threads */
3620
d50a6b56
SH		 3621 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3622 if (pkt_dev) {
25a8b254 3623 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3624 return -EBUSY;
3625 }
d50a6b56
SH		 3626
3627 pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
3628 if (!pkt_dev)
3629 return -ENOMEM;
3630
222f1806 3631 pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56
SH		 3632 if (pkt_dev->flows == NULL) {
3633 kfree(pkt_dev);
3634 return -ENOMEM;
3635 }
222f1806 3636 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3637
95ed63f7 3638 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3639 pkt_dev->min_pkt_size = ETH_ZLEN;
3640 pkt_dev->max_pkt_size = ETH_ZLEN;
3641 pkt_dev->nfrags = 0;
3642 pkt_dev->clone_skb = pg_clone_skb_d;
fd29cf72 3643 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3644 pkt_dev->count = pg_count_d;
3645 pkt_dev->sofar = 0;
222f1806 3646 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3647 pkt_dev->udp_src_max = 9;
3648 pkt_dev->udp_dst_min = 9;
3649 pkt_dev->udp_dst_max = 9;
3650
34954ddc
FF		 3651 pkt_dev->vlan_p = 0;
3652 pkt_dev->vlan_cfi = 0;
3653 pkt_dev->vlan_id = 0xffff;
3654 pkt_dev->svlan_p = 0;
3655 pkt_dev->svlan_cfi = 0;
3656 pkt_dev->svlan_id = 0xffff;
3657
39df232f
SH		 3658 err = pktgen_setup_dev(pkt_dev, ifname);
3659 if (err)
3660 goto out1;
d50a6b56 3661
5efdccbc
DL		 3662 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3663 &pktgen_if_fops, pkt_dev);
39df232f 3664 if (!pkt_dev->entry) {
25a8b254 3665 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3666 PG_PROC_DIR, ifname);
39df232f
SH		 3667 err = -EINVAL;
3668 goto out2;
d50a6b56 3669 }
a553e4a6
JHS		 3670#ifdef CONFIG_XFRM
3671 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3672 pkt_dev->ipsproto = IPPROTO_ESP;
3673#endif
d50a6b56
SH		 3674
3675 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3676out2:
3677 dev_put(pkt_dev->odev);
3678out1:
a553e4a6
JHS		 3679#ifdef CONFIG_XFRM
3680 free_SAs(pkt_dev);
3681#endif
1d0ebfe7 3682 vfree(pkt_dev->flows);
39df232f
SH		 3683 kfree(pkt_dev);
3684 return err;
1da177e4
LT		 3685}
3686
ee74baa7 3687static int __init pktgen_create_thread(int cpu)
1da177e4 3688{
cdcdbe0b 3689 struct pktgen_thread *t;
d50a6b56 3690 struct proc_dir_entry *pe;
ee74baa7 3691 struct task_struct *p;
222f1806
LC		 3692
3693 t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
3694 if (!t) {
25a8b254
DM		 3695 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3696 "create new thread.\n");
222f1806
LC		 3697 return -ENOMEM;
3698 }
3699
222f1806 3700 spin_lock_init(&t->if_lock);
1da177e4 3701 t->cpu = cpu;
222f1806 3702
ee74baa7
DM		 3703 INIT_LIST_HEAD(&t->if_list);
3704
3705 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3706 init_completion(&t->start_done);
ee74baa7
DM		 3707
3708 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3709 if (IS_ERR(p)) {
25a8b254
DM		 3710 printk(KERN_ERR "pktgen: kernel_thread() failed "
3711 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3712 list_del(&t->th_list);
3713 kfree(t);
3714 return PTR_ERR(p);
3715 }
3716 kthread_bind(p, cpu);
3717 t->tsk = p;
3718
5efdccbc
DL		 3719 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3720 &pktgen_thread_fops, t);
222f1806 3721 if (!pe) {
25a8b254 3722 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3723 PG_PROC_DIR, t->tsk->comm);
3724 kthread_stop(p);
3725 list_del(&t->th_list);
222f1806
LC		 3726 kfree(t);
3727 return -EINVAL;
3728 }
d50a6b56 3729
ee74baa7 3730 wake_up_process(p);
d3ede327 3731 wait_for_completion(&t->start_done);
1da177e4
LT		 3732
3733 return 0;
3734}
3735
4ec93edb
YH		 3736/*
3737 * Removes a device from the thread if_list.
1da177e4 3738 */
222f1806
LC		 3739static void _rem_dev_from_if_list(struct pktgen_thread *t,
3740 struct pktgen_dev *pkt_dev)
1da177e4 3741{
c26a8016
LC		 3742 struct list_head *q, *n;
3743 struct pktgen_dev *p;
1da177e4 3744
c26a8016
LC		 3745 list_for_each_safe(q, n, &t->if_list) {
3746 p = list_entry(q, struct pktgen_dev, list);
3747 if (p == pkt_dev)
3748 list_del(&p->list);
1da177e4
LT		 3749 }
3750}
3751
222f1806
LC		 3752static int pktgen_remove_device(struct pktgen_thread *t,
3753 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3754{
3755
25c4e53a 3756 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3757
222f1806 3758 if (pkt_dev->running) {
25a8b254
DM		 3759 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3760 "running interface, stopping it now.\n");
222f1806
LC		 3761 pktgen_stop_device(pkt_dev);
3762 }
3763
3764 /* Dis-associate from the interface */
1da177e4
LT		 3765
3766 if (pkt_dev->odev) {
3767 dev_put(pkt_dev->odev);
222f1806
LC		 3768 pkt_dev->odev = NULL;
3769 }
3770
1da177e4
LT		 3771 /* And update the thread if_list */
3772
3773 _rem_dev_from_if_list(t, pkt_dev);
3774
39df232f
SH		 3775 if (pkt_dev->entry)
3776 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3777
a553e4a6
JHS		 3778#ifdef CONFIG_XFRM
3779 free_SAs(pkt_dev);
3780#endif
1d0ebfe7 3781 vfree(pkt_dev->flows);
1da177e4 3782 kfree(pkt_dev);
222f1806 3783 return 0;
1da177e4
LT		 3784}
3785
222f1806 3786static int __init pg_init(void)
1da177e4
LT		 3787{
3788 int cpu;
d50a6b56 3789 struct proc_dir_entry *pe;
1da177e4 3790
25a8b254 3791 printk(KERN_INFO "%s", version);
1da177e4 3792
457c4cbc 3793 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3794 if (!pg_proc_dir)
3795 return -ENODEV;
1da177e4 3796
25296d59 3797 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3798 if (pe == NULL) {
25a8b254
DM		 3799 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3800 "procfs entry.\n", PGCTRL);
457c4cbc 3801 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3802 return -EINVAL;
3803 }
1da177e4 3804
1da177e4
LT		 3805 /* Register us to receive netdevice events */
3806 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3807
670c02c2 3808 for_each_online_cpu(cpu) {
8024bb24 3809 int err;
1da177e4 3810
ee74baa7 3811 err = pktgen_create_thread(cpu);
8024bb24 3812 if (err)
25a8b254
DM		 3813 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3814 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3815 }
8024bb24
LC		 3816
3817 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3818 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3819 "all threads\n");
8024bb24
LC		 3820 unregister_netdevice_notifier(&pktgen_notifier_block);
3821 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3822 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3823 return -ENODEV;
3824 }
3825
222f1806 3826 return 0;
1da177e4
LT		 3827}
3828
3829static void __exit pg_cleanup(void)
3830{
cdcdbe0b
LC		 3831 struct pktgen_thread *t;
3832 struct list_head *q, *n;
1da177e4
LT		 3833 wait_queue_head_t queue;
3834 init_waitqueue_head(&queue);
3835
222f1806 3836 /* Stop all interfaces & threads */
1da177e4 3837
cdcdbe0b
LC		 3838 list_for_each_safe(q, n, &pktgen_threads) {
3839 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3840 kthread_stop(t->tsk);
3841 kfree(t);
222f1806 3842 }
1da177e4 3843
222f1806 3844 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3845 unregister_netdevice_notifier(&pktgen_notifier_block);
3846
222f1806 3847 /* Clean up proc file system */
d50a6b56 3848 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3849 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3850}
3851
1da177e4
LT		 3852module_init(pg_init);
3853module_exit(pg_cleanup);
3854
c3d2f52d 3855MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3856MODULE_DESCRIPTION("Packet Generator tool");
3857MODULE_LICENSE("GPL");
c3d2f52d 3858MODULE_VERSION(VERSION);
1da177e4 3859module_param(pg_count_d, int, 0);
c3d2f52d 3860MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3861module_param(pg_delay_d, int, 0);
c3d2f52d 3862MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3863module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3864MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3865module_param(debug, int, 0);
c3d2f52d 3866MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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