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pktgen: make sure that pktgen_thread_worker has been executed
[net-next-2.6.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4
LT		 117 */
118#include <linux/sys.h>
119#include <linux/types.h>
120#include <linux/module.h>
121#include <linux/moduleparam.h>
122#include <linux/kernel.h>
222fa076 123#include <linux/mutex.h>
1da177e4
LT		 124#include <linux/sched.h>
125#include <linux/slab.h>
126#include <linux/vmalloc.h>
1da177e4
LT		 127#include <linux/unistd.h>
128#include <linux/string.h>
129#include <linux/ptrace.h>
130#include <linux/errno.h>
131#include <linux/ioport.h>
132#include <linux/interrupt.h>
4fc268d2 133#include <linux/capability.h>
09fe3ef4 134#include <linux/freezer.h>
1da177e4
LT		 135#include <linux/delay.h>
136#include <linux/timer.h>
cdcdbe0b 137#include <linux/list.h>
1da177e4
LT		 138#include <linux/init.h>
139#include <linux/skbuff.h>
140#include <linux/netdevice.h>
141#include <linux/inet.h>
142#include <linux/inetdevice.h>
143#include <linux/rtnetlink.h>
144#include <linux/if_arp.h>
34954ddc 145#include <linux/if_vlan.h>
1da177e4
LT		 146#include <linux/in.h>
147#include <linux/ip.h>
148#include <linux/ipv6.h>
149#include <linux/udp.h>
150#include <linux/proc_fs.h>
d50a6b56 151#include <linux/seq_file.h>
1da177e4 152#include <linux/wait.h>
f404e9a6 153#include <linux/etherdevice.h>
ee74baa7 154#include <linux/kthread.h>
457c4cbc 155#include <net/net_namespace.h>
1da177e4
LT		 156#include <net/checksum.h>
157#include <net/ipv6.h>
158#include <net/addrconf.h>
a553e4a6
JHS		 159#ifdef CONFIG_XFRM
160#include <net/xfrm.h>
161#endif
1da177e4
LT		 162#include <asm/byteorder.h>
163#include <linux/rcupdate.h>
1977f032 164#include <linux/bitops.h>
1da177e4
LT		 165#include <asm/io.h>
166#include <asm/dma.h>
167#include <asm/uaccess.h>
222f1806 168#include <asm/div64.h> /* do_div */
1da177e4
LT		 169#include <asm/timex.h>
170
b163911f 171#define VERSION "pktgen v2.69: Packet Generator for packet performance testing.\n"
1da177e4 172
1da177e4 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 */
1da177e4
LT		 192
193/* Thread control flag bits */
222f1806
LC		 194#define T_TERMINATE (1<<0)
195#define T_STOP (1<<1) /* Stop run */
196#define T_RUN (1<<2) /* Start run */
197#define T_REMDEVALL (1<<3) /* Remove all devs */
198#define T_REMDEV (1<<4) /* 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"
208static struct proc_dir_entry *pg_proc_dir = NULL;
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 */
c26a8016 233 struct list_head list; /* Used for chaining in the thread's run-queue */
1da177e4 234
222f1806 235 int running; /* if this changes to 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
LC		 247 int nfrags;
248 __u32 delay_us; /* Default delay */
249 __u32 delay_ns;
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 */
253 __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */
254
255 /* runtime counters relating to clone_skb */
256 __u64 next_tx_us; /* timestamp of when to tx next */
257 __u32 next_tx_ns;
258
259 __u64 allocated_skbs;
260 __u32 clone_count;
261 int last_ok; /* Was last skb sent?
262 * Or a failed transmit of some sort? This will keep
263 * sequence numbers in order, for example.
264 */
265 __u64 started_at; /* micro-seconds */
266 __u64 stopped_at; /* micro-seconds */
267 __u64 idle_acc; /* micro-seconds */
268 __u32 seq_num;
269
270 int clone_skb; /* Use multiple SKBs during packet gen. If this number
271 * is greater than 1, then that many copies of the same
272 * packet will be sent before a new packet is allocated.
273 * For instance, if you want to send 1024 identical packets
274 * before creating a new packet, set clone_skb to 1024.
275 */
276
277 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
278 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
279 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
280 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
281
282 struct in6_addr in6_saddr;
283 struct in6_addr in6_daddr;
284 struct in6_addr cur_in6_daddr;
285 struct in6_addr cur_in6_saddr;
1da177e4 286 /* For ranges */
222f1806
LC		 287 struct in6_addr min_in6_daddr;
288 struct in6_addr max_in6_daddr;
289 struct in6_addr min_in6_saddr;
290 struct in6_addr max_in6_saddr;
291
292 /* If we're doing ranges, random or incremental, then this
293 * defines the min/max for those ranges.
294 */
252e3346
AV		 295 __be32 saddr_min; /* inclusive, source IP address */
296 __be32 saddr_max; /* exclusive, source IP address */
297 __be32 daddr_min; /* inclusive, dest IP address */
298 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 299
300 __u16 udp_src_min; /* inclusive, source UDP port */
301 __u16 udp_src_max; /* exclusive, source UDP port */
302 __u16 udp_dst_min; /* inclusive, dest UDP port */
303 __u16 udp_dst_max; /* exclusive, dest UDP port */
304
1ca7768c
FF		 305 /* DSCP + ECN */
306 __u8 tos; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */
307 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */
308
ca6549af
SW		 309 /* MPLS */
310 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
311 __be32 labels[MAX_MPLS_LABELS];
312
34954ddc
FF		 313 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
314 __u8 vlan_p;
315 __u8 vlan_cfi;
316 __u16 vlan_id; /* 0xffff means no vlan tag */
317
318 __u8 svlan_p;
319 __u8 svlan_cfi;
320 __u16 svlan_id; /* 0xffff means no svlan tag */
321
222f1806
LC		 322 __u32 src_mac_count; /* How many MACs to iterate through */
323 __u32 dst_mac_count; /* How many MACs to iterate through */
324
325 unsigned char dst_mac[ETH_ALEN];
326 unsigned char src_mac[ETH_ALEN];
327
328 __u32 cur_dst_mac_offset;
329 __u32 cur_src_mac_offset;
252e3346
AV		 330 __be32 cur_saddr;
331 __be32 cur_daddr;
222f1806
LC		 332 __u16 cur_udp_dst;
333 __u16 cur_udp_src;
45b270f8 334 __u16 cur_queue_map;
222f1806
LC		 335 __u32 cur_pkt_size;
336
337 __u8 hh[14];
338 /* = {
339 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
340
341 We fill in SRC address later
342 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
343 0x08, 0x00
344 };
345 */
346 __u16 pad; /* pad out the hh struct to an even 16 bytes */
347
348 struct sk_buff *skb; /* skb we are to transmit next, mainly used for when we
349 * are transmitting the same one multiple times
350 */
351 struct net_device *odev; /* The out-going device. Note that the device should
352 * have it's pg_info pointer pointing back to this
353 * device. This will be set when the user specifies
354 * the out-going device name (not when the inject is
355 * started as it used to do.)
356 */
1da177e4 357 struct flow_state *flows;
222f1806
LC		 358 unsigned cflows; /* Concurrent flows (config) */
359 unsigned lflow; /* Flow length (config) */
360 unsigned nflows; /* accumulated flows (stats) */
007a531b 361 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 362
363 u16 queue_map_min;
364 u16 queue_map_max;
365
a553e4a6
JHS		 366#ifdef CONFIG_XFRM
367 __u8 ipsmode; /* IPSEC mode (config) */
368 __u8 ipsproto; /* IPSEC type (config) */
369#endif
39df232f 370 char result[512];
1da177e4
LT		 371};
372
373struct pktgen_hdr {
252e3346
AV		 374 __be32 pgh_magic;
375 __be32 seq_num;
376 __be32 tv_sec;
377 __be32 tv_usec;
1da177e4
LT		 378};
379
380struct pktgen_thread {
222f1806 381 spinlock_t if_lock;
c26a8016 382 struct list_head if_list; /* All device here */
cdcdbe0b 383 struct list_head th_list;
ee74baa7 384 struct task_struct *tsk;
222f1806 385 char result[512];
222f1806
LC		 386
387 /* Field for thread to receive "posted" events terminate, stop ifs etc. */
388
389 u32 control;
1da177e4
LT		 390 int cpu;
391
222f1806 392 wait_queue_head_t queue;
d3ede327 393 struct completion start_done;
1da177e4
LT		 394};
395
396#define REMOVE 1
397#define FIND 0
398
1da177e4 399/** Convert to micro-seconds */
222f1806 400static inline __u64 tv_to_us(const struct timeval *tv)
1da177e4 401{
222f1806
LC		 402 __u64 us = tv->tv_usec;
403 us += (__u64) tv->tv_sec * (__u64) 1000000;
404 return us;
1da177e4
LT		 405}
406
6db105db 407static __u64 getCurUs(void)
1da177e4 408{
222f1806
LC		 409 struct timeval tv;
410 do_gettimeofday(&tv);
411 return tv_to_us(&tv);
1da177e4
LT		 412}
413
1da177e4
LT		 414/* old include end */
415
416static char version[] __initdata = VERSION;
417
222f1806
LC		 418static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
419static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
420static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
421 const char *ifname);
1da177e4
LT		 422static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
423static void pktgen_run_all_threads(void);
424static void pktgen_stop_all_threads_ifs(void);
425static int pktgen_stop_device(struct pktgen_dev *pkt_dev);
222f1806 426static void pktgen_stop(struct pktgen_thread *t);
1da177e4 427static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 428
222f1806
LC		 429static unsigned int scan_ip6(const char *s, char ip[16]);
430static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 431
432/* Module parameters, defaults. */
222f1806 433static int pg_count_d = 1000; /* 1000 pkts by default */
f34fbb97
JK		 434static int pg_delay_d;
435static int pg_clone_skb_d;
436static int debug;
1da177e4 437
222fa076 438static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 439static LIST_HEAD(pktgen_threads);
1da177e4 440
1da177e4
LT		 441static struct notifier_block pktgen_notifier_block = {
442 .notifier_call = pktgen_device_event,
443};
444
1da177e4 445/*
4ec93edb 446 * /proc handling functions
1da177e4
LT		 447 *
448 */
449
d50a6b56 450static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 451{
d50a6b56
SH		 452 seq_puts(seq, VERSION);
453 return 0;
1da177e4
LT		 454}
455
222f1806
LC		 456static ssize_t pgctrl_write(struct file *file, const char __user * buf,
457 size_t count, loff_t * ppos)
1da177e4 458{
1da177e4 459 int err = 0;
d50a6b56 460 char data[128];
1da177e4 461
222f1806
LC		 462 if (!capable(CAP_NET_ADMIN)) {
463 err = -EPERM;
1da177e4 464 goto out;
222f1806 465 }
1da177e4 466
d50a6b56
SH		 467 if (count > sizeof(data))
468 count = sizeof(data);
1da177e4 469
1da177e4 470 if (copy_from_user(data, buf, count)) {
b4099fab 471 err = -EFAULT;
d50a6b56 472 goto out;
222f1806
LC		 473 }
474 data[count - 1] = 0; /* Make string */
1da177e4 475
222f1806 476 if (!strcmp(data, "stop"))
1da177e4
LT		 477 pktgen_stop_all_threads_ifs();
478
222f1806 479 else if (!strcmp(data, "start"))
1da177e4
LT		 480 pktgen_run_all_threads();
481
222f1806 482 else
25a8b254 483 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 484
485 err = count;
486
222f1806
LC		 487out:
488 return err;
1da177e4
LT		 489}
490
d50a6b56
SH		 491static int pgctrl_open(struct inode *inode, struct file *file)
492{
493 return single_open(file, pgctrl_show, PDE(inode)->data);
494}
495
9a32144e 496static const struct file_operations pktgen_fops = {
222f1806
LC		 497 .owner = THIS_MODULE,
498 .open = pgctrl_open,
499 .read = seq_read,
500 .llseek = seq_lseek,
501 .write = pgctrl_write,
502 .release = single_release,
d50a6b56
SH		 503};
504
505static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 506{
222f1806
LC		 507 struct pktgen_dev *pkt_dev = seq->private;
508 __u64 sa;
509 __u64 stopped;
510 __u64 now = getCurUs();
0795af57 511 DECLARE_MAC_BUF(mac);
222f1806
LC		 512
513 seq_printf(seq,
514 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
515 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
516 pkt_dev->max_pkt_size);
517
518 seq_printf(seq,
519 " frags: %d delay: %u clone_skb: %d ifname: %s\n",
520 pkt_dev->nfrags,
521 1000 * pkt_dev->delay_us + pkt_dev->delay_ns,
39df232f 522 pkt_dev->clone_skb, pkt_dev->odev->name);
222f1806
LC		 523
524 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
525 pkt_dev->lflow);
526
45b270f8
RO		 527 seq_printf(seq,
528 " queue_map_min: %u queue_map_max: %u\n",
529 pkt_dev->queue_map_min,
530 pkt_dev->queue_map_max);
531
222f1806
LC		 532 if (pkt_dev->flags & F_IPV6) {
533 char b1[128], b2[128], b3[128];
534 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
535 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
536 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
537 seq_printf(seq,
538 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
539 b2, b3);
540
541 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
542 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
543 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
544 seq_printf(seq,
545 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
546 b2, b3);
547
548 } else
549 seq_printf(seq,
550 " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n",
551 pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min,
552 pkt_dev->src_max);
1da177e4 553
222f1806 554 seq_puts(seq, " src_mac: ");
1da177e4 555
0795af57
JP		 556 seq_printf(seq, "%s ",
557 print_mac(mac, is_zero_ether_addr(pkt_dev->src_mac) ?
558 pkt_dev->odev->dev_addr : pkt_dev->src_mac));
222f1806
LC		 559
560 seq_printf(seq, "dst_mac: ");
0795af57 561 seq_printf(seq, "%s\n", print_mac(mac, pkt_dev->dst_mac));
222f1806
LC		 562
563 seq_printf(seq,
564 " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
565 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
566 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
567
568 seq_printf(seq,
ca6549af 569 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 570 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 571
ca6549af
SW		 572 if (pkt_dev->nr_labels) {
573 unsigned i;
574 seq_printf(seq, " mpls: ");
e71a4783 575 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 576 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
577 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
578 }
579
34954ddc
FF		 580 if (pkt_dev->vlan_id != 0xffff) {
581 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
582 pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
583 }
584
585 if (pkt_dev->svlan_id != 0xffff) {
586 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
587 pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
588 }
589
1ca7768c
FF		 590 if (pkt_dev->tos) {
591 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
592 }
593
594 if (pkt_dev->traffic_class) {
595 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
596 }
597
ca6549af
SW		 598 seq_printf(seq, " Flags: ");
599
222f1806
LC		 600 if (pkt_dev->flags & F_IPV6)
601 seq_printf(seq, "IPV6 ");
1da177e4 602
222f1806
LC		 603 if (pkt_dev->flags & F_IPSRC_RND)
604 seq_printf(seq, "IPSRC_RND ");
1da177e4 605
222f1806
LC		 606 if (pkt_dev->flags & F_IPDST_RND)
607 seq_printf(seq, "IPDST_RND ");
1da177e4 608
222f1806
LC		 609 if (pkt_dev->flags & F_TXSIZE_RND)
610 seq_printf(seq, "TXSIZE_RND ");
1da177e4 611
222f1806
LC		 612 if (pkt_dev->flags & F_UDPSRC_RND)
613 seq_printf(seq, "UDPSRC_RND ");
1da177e4 614
222f1806
LC		 615 if (pkt_dev->flags & F_UDPDST_RND)
616 seq_printf(seq, "UDPDST_RND ");
1da177e4 617
ca6549af
SW		 618 if (pkt_dev->flags & F_MPLS_RND)
619 seq_printf(seq, "MPLS_RND ");
620
45b270f8
RO		 621 if (pkt_dev->flags & F_QUEUE_MAP_RND)
622 seq_printf(seq, "QUEUE_MAP_RND ");
623
007a531b
JHS		 624 if (pkt_dev->cflows) {
625 if (pkt_dev->flags & F_FLOW_SEQ)
626 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
627 else
628 seq_printf(seq, "FLOW_RND ");
629 }
630
a553e4a6
JHS		 631#ifdef CONFIG_XFRM
632 if (pkt_dev->flags & F_IPSEC_ON)
633 seq_printf(seq, "IPSEC ");
634#endif
635
222f1806
LC		 636 if (pkt_dev->flags & F_MACSRC_RND)
637 seq_printf(seq, "MACSRC_RND ");
1da177e4 638
222f1806
LC		 639 if (pkt_dev->flags & F_MACDST_RND)
640 seq_printf(seq, "MACDST_RND ");
1da177e4 641
34954ddc
FF		 642 if (pkt_dev->flags & F_VID_RND)
643 seq_printf(seq, "VID_RND ");
644
645 if (pkt_dev->flags & F_SVID_RND)
646 seq_printf(seq, "SVID_RND ");
647
222f1806
LC		 648 seq_puts(seq, "\n");
649
650 sa = pkt_dev->started_at;
651 stopped = pkt_dev->stopped_at;
652 if (pkt_dev->running)
653 stopped = now; /* not really stopped, more like last-running-at */
1da177e4 654
222f1806
LC		 655 seq_printf(seq,
656 "Current:\n pkts-sofar: %llu errors: %llu\n started: %lluus stopped: %lluus idle: %lluus\n",
657 (unsigned long long)pkt_dev->sofar,
658 (unsigned long long)pkt_dev->errors, (unsigned long long)sa,
659 (unsigned long long)stopped,
660 (unsigned long long)pkt_dev->idle_acc);
1da177e4 661
222f1806
LC		 662 seq_printf(seq,
663 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 664 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
665 pkt_dev->cur_src_mac_offset);
1da177e4 666
222f1806 667 if (pkt_dev->flags & F_IPV6) {
1da177e4 668 char b1[128], b2[128];
222f1806
LC		 669 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
670 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
671 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
672 } else
673 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 674 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 675
222f1806 676 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 677 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 678
45b270f8
RO		 679 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
680
222f1806 681 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 682
683 if (pkt_dev->result[0])
222f1806 684 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 685 else
222f1806 686 seq_printf(seq, "Result: Idle\n");
1da177e4 687
d50a6b56 688 return 0;
1da177e4
LT		 689}
690
ca6549af 691
1ca7768c 692static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num)
ca6549af
SW		 693{
694 int i = 0;
695 *num = 0;
696
e71a4783 697 for (; i < maxlen; i++) {
ca6549af
SW		 698 char c;
699 *num <<= 4;
700 if (get_user(c, &user_buffer[i]))
701 return -EFAULT;
702 if ((c >= '0') && (c <= '9'))
703 *num |= c - '0';
704 else if ((c >= 'a') && (c <= 'f'))
705 *num |= c - 'a' + 10;
706 else if ((c >= 'A') && (c <= 'F'))
707 *num |= c - 'A' + 10;
708 else
709 break;
710 }
711 return i;
712}
713
222f1806
LC		 714static int count_trail_chars(const char __user * user_buffer,
715 unsigned int maxlen)
1da177e4
LT		 716{
717 int i;
718
719 for (i = 0; i < maxlen; i++) {
222f1806
LC		 720 char c;
721 if (get_user(c, &user_buffer[i]))
722 return -EFAULT;
723 switch (c) {
1da177e4
LT		 724 case '\"':
725 case '\n':
726 case '\r':
727 case '\t':
728 case ' ':
729 case '=':
730 break;
731 default:
732 goto done;
3ff50b79 733 }
1da177e4
LT		 734 }
735done:
736 return i;
737}
738
222f1806
LC		 739static unsigned long num_arg(const char __user * user_buffer,
740 unsigned long maxlen, unsigned long *num)
1da177e4
LT		 741{
742 int i = 0;
743 *num = 0;
222f1806
LC		 744
745 for (; i < maxlen; i++) {
746 char c;
747 if (get_user(c, &user_buffer[i]))
748 return -EFAULT;
749 if ((c >= '0') && (c <= '9')) {
1da177e4 750 *num *= 10;
222f1806 751 *num += c - '0';
1da177e4
LT		 752 } else
753 break;
754 }
755 return i;
756}
757
222f1806 758static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4
LT		 759{
760 int i = 0;
761
222f1806
LC		 762 for (; i < maxlen; i++) {
763 char c;
764 if (get_user(c, &user_buffer[i]))
765 return -EFAULT;
766 switch (c) {
1da177e4
LT		 767 case '\"':
768 case '\n':
769 case '\r':
770 case '\t':
771 case ' ':
772 goto done_str;
773 break;
774 default:
775 break;
3ff50b79 776 }
1da177e4
LT		 777 }
778done_str:
1da177e4
LT		 779 return i;
780}
781
ca6549af
SW		 782static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
783{
784 unsigned n = 0;
785 char c;
786 ssize_t i = 0;
787 int len;
788
789 pkt_dev->nr_labels = 0;
790 do {
791 __u32 tmp;
1ca7768c 792 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 793 if (len <= 0)
794 return len;
795 pkt_dev->labels[n] = htonl(tmp);
796 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
797 pkt_dev->flags |= F_MPLS_RND;
798 i += len;
799 if (get_user(c, &buffer[i]))
800 return -EFAULT;
801 i++;
802 n++;
803 if (n >= MAX_MPLS_LABELS)
804 return -E2BIG;
e71a4783 805 } while (c == ',');
ca6549af
SW		 806
807 pkt_dev->nr_labels = n;
808 return i;
809}
810
222f1806
LC		 811static ssize_t pktgen_if_write(struct file *file,
812 const char __user * user_buffer, size_t count,
813 loff_t * offset)
1da177e4 814{
222f1806
LC		 815 struct seq_file *seq = (struct seq_file *)file->private_data;
816 struct pktgen_dev *pkt_dev = seq->private;
1da177e4
LT		 817 int i = 0, max, len;
818 char name[16], valstr[32];
819 unsigned long value = 0;
222f1806
LC		 820 char *pg_result = NULL;
821 int tmp = 0;
1da177e4 822 char buf[128];
222f1806
LC		 823
824 pg_result = &(pkt_dev->result[0]);
825
1da177e4 826 if (count < 1) {
25a8b254 827 printk(KERN_WARNING "pktgen: wrong command format\n");
1da177e4
LT		 828 return -EINVAL;
829 }
222f1806 830
1da177e4
LT		 831 max = count - i;
832 tmp = count_trail_chars(&user_buffer[i], max);
222f1806 833 if (tmp < 0) {
25a8b254 834 printk(KERN_WARNING "pktgen: illegal format\n");
222f1806 835 return tmp;
1da177e4 836 }
222f1806
LC		 837 i += tmp;
838
1da177e4
LT		 839 /* Read variable name */
840
841 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806
LC		 842 if (len < 0) {
843 return len;
844 }
1da177e4 845 memset(name, 0, sizeof(name));
222f1806 846 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 847 return -EFAULT;
848 i += len;
222f1806
LC		 849
850 max = count - i;
1da177e4 851 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 852 if (len < 0)
853 return len;
854
1da177e4
LT		 855 i += len;
856
857 if (debug) {
222f1806
LC		 858 char tb[count + 1];
859 if (copy_from_user(tb, user_buffer, count))
1da177e4 860 return -EFAULT;
222f1806 861 tb[count] = 0;
25a8b254 862 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 863 (unsigned long)count, tb);
864 }
1da177e4
LT		 865
866 if (!strcmp(name, "min_pkt_size")) {
867 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 868 if (len < 0) {
869 return len;
870 }
1da177e4 871 i += len;
222f1806
LC		 872 if (value < 14 + 20 + 8)
873 value = 14 + 20 + 8;
874 if (value != pkt_dev->min_pkt_size) {
875 pkt_dev->min_pkt_size = value;
876 pkt_dev->cur_pkt_size = value;
877 }
878 sprintf(pg_result, "OK: min_pkt_size=%u",
879 pkt_dev->min_pkt_size);
1da177e4
LT		 880 return count;
881 }
882
222f1806 883 if (!strcmp(name, "max_pkt_size")) {
1da177e4 884 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 885 if (len < 0) {
886 return len;
887 }
1da177e4 888 i += len;
222f1806
LC		 889 if (value < 14 + 20 + 8)
890 value = 14 + 20 + 8;
891 if (value != pkt_dev->max_pkt_size) {
892 pkt_dev->max_pkt_size = value;
893 pkt_dev->cur_pkt_size = value;
894 }
895 sprintf(pg_result, "OK: max_pkt_size=%u",
896 pkt_dev->max_pkt_size);
1da177e4
LT		 897 return count;
898 }
899
222f1806 900 /* Shortcut for min = max */
1da177e4
LT		 901
902 if (!strcmp(name, "pkt_size")) {
903 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 904 if (len < 0) {
905 return len;
906 }
1da177e4 907 i += len;
222f1806
LC		 908 if (value < 14 + 20 + 8)
909 value = 14 + 20 + 8;
910 if (value != pkt_dev->min_pkt_size) {
911 pkt_dev->min_pkt_size = value;
912 pkt_dev->max_pkt_size = value;
913 pkt_dev->cur_pkt_size = value;
914 }
1da177e4
LT		 915 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
916 return count;
917 }
918
222f1806 919 if (!strcmp(name, "debug")) {
1da177e4 920 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 921 if (len < 0) {
922 return len;
923 }
1da177e4 924 i += len;
222f1806 925 debug = value;
1da177e4
LT		 926 sprintf(pg_result, "OK: debug=%u", debug);
927 return count;
928 }
929
222f1806 930 if (!strcmp(name, "frags")) {
1da177e4 931 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 932 if (len < 0) {
933 return len;
934 }
1da177e4
LT		 935 i += len;
936 pkt_dev->nfrags = value;
937 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
938 return count;
939 }
940 if (!strcmp(name, "delay")) {
941 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 942 if (len < 0) {
943 return len;
944 }
1da177e4
LT		 945 i += len;
946 if (value == 0x7FFFFFFF) {
947 pkt_dev->delay_us = 0x7FFFFFFF;
948 pkt_dev->delay_ns = 0;
949 } else {
950 pkt_dev->delay_us = value / 1000;
951 pkt_dev->delay_ns = value % 1000;
952 }
222f1806
LC		 953 sprintf(pg_result, "OK: delay=%u",
954 1000 * pkt_dev->delay_us + pkt_dev->delay_ns);
1da177e4
LT		 955 return count;
956 }
222f1806 957 if (!strcmp(name, "udp_src_min")) {
1da177e4 958 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 959 if (len < 0) {
960 return len;
961 }
1da177e4 962 i += len;
222f1806
LC		 963 if (value != pkt_dev->udp_src_min) {
964 pkt_dev->udp_src_min = value;
965 pkt_dev->cur_udp_src = value;
966 }
1da177e4
LT		 967 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
968 return count;
969 }
222f1806 970 if (!strcmp(name, "udp_dst_min")) {
1da177e4 971 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 972 if (len < 0) {
973 return len;
974 }
1da177e4 975 i += len;
222f1806
LC		 976 if (value != pkt_dev->udp_dst_min) {
977 pkt_dev->udp_dst_min = value;
978 pkt_dev->cur_udp_dst = value;
979 }
1da177e4
LT		 980 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
981 return count;
982 }
222f1806 983 if (!strcmp(name, "udp_src_max")) {
1da177e4 984 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 985 if (len < 0) {
986 return len;
987 }
1da177e4 988 i += len;
222f1806
LC		 989 if (value != pkt_dev->udp_src_max) {
990 pkt_dev->udp_src_max = value;
991 pkt_dev->cur_udp_src = value;
992 }
1da177e4
LT		 993 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
994 return count;
995 }
222f1806 996 if (!strcmp(name, "udp_dst_max")) {
1da177e4 997 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 998 if (len < 0) {
999 return len;
1000 }
1da177e4 1001 i += len;
222f1806
LC		 1002 if (value != pkt_dev->udp_dst_max) {
1003 pkt_dev->udp_dst_max = value;
1004 pkt_dev->cur_udp_dst = value;
1005 }
1da177e4
LT		 1006 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1007 return count;
1008 }
1009 if (!strcmp(name, "clone_skb")) {
1010 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1011 if (len < 0) {
1012 return len;
1013 }
1da177e4 1014 i += len;
222f1806
LC		 1015 pkt_dev->clone_skb = value;
1016
1da177e4
LT		 1017 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1018 return count;
1019 }
1020 if (!strcmp(name, "count")) {
1021 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1022 if (len < 0) {
1023 return len;
1024 }
1da177e4
LT		 1025 i += len;
1026 pkt_dev->count = value;
1027 sprintf(pg_result, "OK: count=%llu",
222f1806 1028 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1029 return count;
1030 }
1031 if (!strcmp(name, "src_mac_count")) {
1032 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1033 if (len < 0) {
1034 return len;
1035 }
1da177e4
LT		 1036 i += len;
1037 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1038 pkt_dev->src_mac_count = value;
1039 pkt_dev->cur_src_mac_offset = 0;
1040 }
1041 sprintf(pg_result, "OK: src_mac_count=%d",
1042 pkt_dev->src_mac_count);
1da177e4
LT		 1043 return count;
1044 }
1045 if (!strcmp(name, "dst_mac_count")) {
1046 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1047 if (len < 0) {
1048 return len;
1049 }
1da177e4
LT		 1050 i += len;
1051 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1052 pkt_dev->dst_mac_count = value;
1053 pkt_dev->cur_dst_mac_offset = 0;
1054 }
1055 sprintf(pg_result, "OK: dst_mac_count=%d",
1056 pkt_dev->dst_mac_count);
1da177e4
LT		 1057 return count;
1058 }
1059 if (!strcmp(name, "flag")) {
222f1806
LC		 1060 char f[32];
1061 memset(f, 0, 32);
1da177e4 1062 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1063 if (len < 0) {
1064 return len;
1065 }
1da177e4
LT		 1066 if (copy_from_user(f, &user_buffer[i], len))
1067 return -EFAULT;
1068 i += len;
222f1806
LC		 1069 if (strcmp(f, "IPSRC_RND") == 0)
1070 pkt_dev->flags |= F_IPSRC_RND;
1071
1072 else if (strcmp(f, "!IPSRC_RND") == 0)
1073 pkt_dev->flags &= ~F_IPSRC_RND;
1074
1075 else if (strcmp(f, "TXSIZE_RND") == 0)
1076 pkt_dev->flags |= F_TXSIZE_RND;
1077
1078 else if (strcmp(f, "!TXSIZE_RND") == 0)
1079 pkt_dev->flags &= ~F_TXSIZE_RND;
1080
1081 else if (strcmp(f, "IPDST_RND") == 0)
1082 pkt_dev->flags |= F_IPDST_RND;
1083
1084 else if (strcmp(f, "!IPDST_RND") == 0)
1085 pkt_dev->flags &= ~F_IPDST_RND;
1086
1087 else if (strcmp(f, "UDPSRC_RND") == 0)
1088 pkt_dev->flags |= F_UDPSRC_RND;
1089
1090 else if (strcmp(f, "!UDPSRC_RND") == 0)
1091 pkt_dev->flags &= ~F_UDPSRC_RND;
1092
1093 else if (strcmp(f, "UDPDST_RND") == 0)
1094 pkt_dev->flags |= F_UDPDST_RND;
1095
1096 else if (strcmp(f, "!UDPDST_RND") == 0)
1097 pkt_dev->flags &= ~F_UDPDST_RND;
1098
1099 else if (strcmp(f, "MACSRC_RND") == 0)
1100 pkt_dev->flags |= F_MACSRC_RND;
1101
1102 else if (strcmp(f, "!MACSRC_RND") == 0)
1103 pkt_dev->flags &= ~F_MACSRC_RND;
1104
1105 else if (strcmp(f, "MACDST_RND") == 0)
1106 pkt_dev->flags |= F_MACDST_RND;
1107
1108 else if (strcmp(f, "!MACDST_RND") == 0)
1109 pkt_dev->flags &= ~F_MACDST_RND;
1110
ca6549af
SW		 1111 else if (strcmp(f, "MPLS_RND") == 0)
1112 pkt_dev->flags |= F_MPLS_RND;
1113
1114 else if (strcmp(f, "!MPLS_RND") == 0)
1115 pkt_dev->flags &= ~F_MPLS_RND;
1116
34954ddc
FF		 1117 else if (strcmp(f, "VID_RND") == 0)
1118 pkt_dev->flags |= F_VID_RND;
1119
1120 else if (strcmp(f, "!VID_RND") == 0)
1121 pkt_dev->flags &= ~F_VID_RND;
1122
1123 else if (strcmp(f, "SVID_RND") == 0)
1124 pkt_dev->flags |= F_SVID_RND;
1125
1126 else if (strcmp(f, "!SVID_RND") == 0)
1127 pkt_dev->flags &= ~F_SVID_RND;
1128
007a531b
JHS		 1129 else if (strcmp(f, "FLOW_SEQ") == 0)
1130 pkt_dev->flags |= F_FLOW_SEQ;
1131
45b270f8
RO		 1132 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1133 pkt_dev->flags |= F_QUEUE_MAP_RND;
1134
1135 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1136 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
a553e4a6
JHS		 1137#ifdef CONFIG_XFRM
1138 else if (strcmp(f, "IPSEC") == 0)
1139 pkt_dev->flags |= F_IPSEC_ON;
1140#endif
1141
1ca7768c
FF		 1142 else if (strcmp(f, "!IPV6") == 0)
1143 pkt_dev->flags &= ~F_IPV6;
1144
222f1806
LC		 1145 else {
1146 sprintf(pg_result,
1147 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1148 f,
1ca7768c 1149 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
a553e4a6 1150 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
222f1806
LC		 1151 return count;
1152 }
1da177e4
LT		 1153 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1154 return count;
1155 }
1156 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1157 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
222f1806
LC		 1158 if (len < 0) {
1159 return len;
1160 }
1da177e4 1161
222f1806 1162 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1163 return -EFAULT;
222f1806
LC		 1164 buf[len] = 0;
1165 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1166 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1167 strncpy(pkt_dev->dst_min, buf, len);
1168 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1169 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1170 }
1171 if (debug)
25a8b254 1172 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1173 pkt_dev->dst_min);
1174 i += len;
1da177e4
LT		 1175 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1176 return count;
1177 }
1178 if (!strcmp(name, "dst_max")) {
1179 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
222f1806
LC		 1180 if (len < 0) {
1181 return len;
1182 }
1da177e4 1183
222f1806 1184 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1185 return -EFAULT;
1186
222f1806
LC		 1187 buf[len] = 0;
1188 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1189 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1190 strncpy(pkt_dev->dst_max, buf, len);
1191 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1192 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1193 }
1194 if (debug)
25a8b254 1195 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1196 pkt_dev->dst_max);
1da177e4
LT		 1197 i += len;
1198 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1199 return count;
1200 }
1201 if (!strcmp(name, "dst6")) {
1202 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1203 if (len < 0)
1204 return len;
1da177e4
LT		 1205
1206 pkt_dev->flags |= F_IPV6;
1207
222f1806 1208 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1209 return -EFAULT;
222f1806 1210 buf[len] = 0;
1da177e4
LT		 1211
1212 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1213 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1214
1215 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1216
222f1806 1217 if (debug)
25a8b254 1218 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1219
222f1806 1220 i += len;
1da177e4
LT		 1221 sprintf(pg_result, "OK: dst6=%s", buf);
1222 return count;
1223 }
1224 if (!strcmp(name, "dst6_min")) {
1225 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1226 if (len < 0)
1227 return len;
1da177e4
LT		 1228
1229 pkt_dev->flags |= F_IPV6;
1230
222f1806 1231 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1232 return -EFAULT;
222f1806 1233 buf[len] = 0;
1da177e4
LT		 1234
1235 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1236 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1237
222f1806
LC		 1238 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1239 &pkt_dev->min_in6_daddr);
1240 if (debug)
25a8b254 1241 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1242
222f1806 1243 i += len;
1da177e4
LT		 1244 sprintf(pg_result, "OK: dst6_min=%s", buf);
1245 return count;
1246 }
1247 if (!strcmp(name, "dst6_max")) {
1248 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1249 if (len < 0)
1250 return len;
1da177e4
LT		 1251
1252 pkt_dev->flags |= F_IPV6;
1253
222f1806 1254 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1255 return -EFAULT;
222f1806 1256 buf[len] = 0;
1da177e4
LT		 1257
1258 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1259 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1260
222f1806 1261 if (debug)
25a8b254 1262 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1263
222f1806 1264 i += len;
1da177e4
LT		 1265 sprintf(pg_result, "OK: dst6_max=%s", buf);
1266 return count;
1267 }
1268 if (!strcmp(name, "src6")) {
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->in6_saddr.s6_addr);
222f1806 1280 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1281
1282 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1283
222f1806 1284 if (debug)
25a8b254 1285 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1286
1287 i += len;
1da177e4
LT		 1288 sprintf(pg_result, "OK: src6=%s", buf);
1289 return count;
1290 }
1291 if (!strcmp(name, "src_min")) {
1292 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
222f1806
LC		 1293 if (len < 0) {
1294 return len;
1295 }
1296 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1297 return -EFAULT;
222f1806
LC		 1298 buf[len] = 0;
1299 if (strcmp(buf, pkt_dev->src_min) != 0) {
1300 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1301 strncpy(pkt_dev->src_min, buf, len);
1302 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1303 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1304 }
1305 if (debug)
25a8b254 1306 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1307 pkt_dev->src_min);
1da177e4
LT		 1308 i += len;
1309 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1310 return count;
1311 }
1312 if (!strcmp(name, "src_max")) {
1313 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
222f1806
LC		 1314 if (len < 0) {
1315 return len;
1316 }
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_max) != 0) {
1321 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1322 strncpy(pkt_dev->src_max, buf, len);
1323 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1324 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1325 }
1326 if (debug)
25a8b254 1327 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1328 pkt_dev->src_max);
1da177e4
LT		 1329 i += len;
1330 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1331 return count;
1332 }
1333 if (!strcmp(name, "dst_mac")) {
1334 char *v = valstr;
f404e9a6 1335 unsigned char old_dmac[ETH_ALEN];
1da177e4 1336 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1337 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1338
1da177e4 1339 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1340 if (len < 0) {
1341 return len;
1342 }
1da177e4 1343 memset(valstr, 0, sizeof(valstr));
222f1806 1344 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1345 return -EFAULT;
1346 i += len;
1347
222f1806 1348 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1349 if (*v >= '0' && *v <= '9') {
1350 *m *= 16;
1351 *m += *v - '0';
1352 }
1353 if (*v >= 'A' && *v <= 'F') {
1354 *m *= 16;
1355 *m += *v - 'A' + 10;
1356 }
1357 if (*v >= 'a' && *v <= 'f') {
1358 *m *= 16;
1359 *m += *v - 'a' + 10;
1360 }
1361 if (*v == ':') {
1362 m++;
1363 *m = 0;
1364 }
1365 }
1366
1367 /* Set up Dest MAC */
f404e9a6
KK		 1368 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1369 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1370
1da177e4
LT		 1371 sprintf(pg_result, "OK: dstmac");
1372 return count;
1373 }
1374 if (!strcmp(name, "src_mac")) {
1375 char *v = valstr;
ce5d0b47 1376 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1377 unsigned char *m = pkt_dev->src_mac;
1378
ce5d0b47
AR		 1379 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1380
1da177e4 1381 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
222f1806
LC		 1382 if (len < 0) {
1383 return len;
1384 }
1da177e4 1385 memset(valstr, 0, sizeof(valstr));
222f1806 1386 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1387 return -EFAULT;
1388 i += len;
1389
222f1806 1390 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1391 if (*v >= '0' && *v <= '9') {
1392 *m *= 16;
1393 *m += *v - '0';
1394 }
1395 if (*v >= 'A' && *v <= 'F') {
1396 *m *= 16;
1397 *m += *v - 'A' + 10;
1398 }
1399 if (*v >= 'a' && *v <= 'f') {
1400 *m *= 16;
1401 *m += *v - 'a' + 10;
1402 }
1403 if (*v == ':') {
1404 m++;
1405 *m = 0;
1406 }
222f1806 1407 }
1da177e4 1408
ce5d0b47
AR		 1409 /* Set up Src MAC */
1410 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1411 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1412
222f1806 1413 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1414 return count;
1415 }
1416
222f1806
LC		 1417 if (!strcmp(name, "clear_counters")) {
1418 pktgen_clear_counters(pkt_dev);
1419 sprintf(pg_result, "OK: Clearing counters.\n");
1420 return count;
1421 }
1da177e4
LT		 1422
1423 if (!strcmp(name, "flows")) {
1424 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1425 if (len < 0) {
1426 return len;
1427 }
1da177e4
LT		 1428 i += len;
1429 if (value > MAX_CFLOWS)
1430 value = MAX_CFLOWS;
1431
1432 pkt_dev->cflows = value;
1433 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1434 return count;
1435 }
1436
1437 if (!strcmp(name, "flowlen")) {
1438 len = num_arg(&user_buffer[i], 10, &value);
222f1806
LC		 1439 if (len < 0) {
1440 return len;
1441 }
1da177e4
LT		 1442 i += len;
1443 pkt_dev->lflow = value;
1444 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1445 return count;
1446 }
222f1806 1447
45b270f8
RO		 1448 if (!strcmp(name, "queue_map_min")) {
1449 len = num_arg(&user_buffer[i], 5, &value);
1450 if (len < 0) {
1451 return len;
1452 }
1453 i += len;
1454 pkt_dev->queue_map_min = value;
1455 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1456 return count;
1457 }
1458
1459 if (!strcmp(name, "queue_map_max")) {
1460 len = num_arg(&user_buffer[i], 5, &value);
1461 if (len < 0) {
1462 return len;
1463 }
1464 i += len;
1465 pkt_dev->queue_map_max = value;
1466 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1467 return count;
1468 }
1469
ca6549af 1470 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1471 unsigned n, cnt;
1472
ca6549af 1473 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1474 if (len < 0)
1475 return len;
ca6549af 1476 i += len;
cfcabdcc 1477 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1478 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1479 cnt += sprintf(pg_result + cnt,
1480 "%08x%s", ntohl(pkt_dev->labels[n]),
1481 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1482
1483 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1484 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1485 pkt_dev->svlan_id = 0xffff;
1486
1487 if (debug)
25a8b254 1488 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1489 }
1490 return count;
1491 }
1492
1493 if (!strcmp(name, "vlan_id")) {
1494 len = num_arg(&user_buffer[i], 4, &value);
1495 if (len < 0) {
1496 return len;
1497 }
1498 i += len;
1499 if (value <= 4095) {
1500 pkt_dev->vlan_id = value; /* turn on VLAN */
1501
1502 if (debug)
25a8b254 1503 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1504
1505 if (debug && pkt_dev->nr_labels)
25a8b254 1506 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1507
1508 pkt_dev->nr_labels = 0; /* turn off MPLS */
1509 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1510 } else {
1511 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1512 pkt_dev->svlan_id = 0xffff;
1513
1514 if (debug)
25a8b254 1515 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1516 }
1517 return count;
1518 }
1519
1520 if (!strcmp(name, "vlan_p")) {
1521 len = num_arg(&user_buffer[i], 1, &value);
1522 if (len < 0) {
1523 return len;
1524 }
1525 i += len;
1526 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1527 pkt_dev->vlan_p = value;
1528 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1529 } else {
1530 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1531 }
1532 return count;
1533 }
1534
1535 if (!strcmp(name, "vlan_cfi")) {
1536 len = num_arg(&user_buffer[i], 1, &value);
1537 if (len < 0) {
1538 return len;
1539 }
1540 i += len;
1541 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1542 pkt_dev->vlan_cfi = value;
1543 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1544 } else {
1545 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1546 }
1547 return count;
1548 }
1549
1550 if (!strcmp(name, "svlan_id")) {
1551 len = num_arg(&user_buffer[i], 4, &value);
1552 if (len < 0) {
1553 return len;
1554 }
1555 i += len;
1556 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1557 pkt_dev->svlan_id = value; /* turn on SVLAN */
1558
1559 if (debug)
25a8b254 1560 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1561
1562 if (debug && pkt_dev->nr_labels)
25a8b254 1563 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1564
1565 pkt_dev->nr_labels = 0; /* turn off MPLS */
1566 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1567 } else {
1568 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1569 pkt_dev->svlan_id = 0xffff;
1570
1571 if (debug)
25a8b254 1572 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1573 }
1574 return count;
1575 }
1576
1577 if (!strcmp(name, "svlan_p")) {
1578 len = num_arg(&user_buffer[i], 1, &value);
1579 if (len < 0) {
1580 return len;
1581 }
1582 i += len;
1583 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1584 pkt_dev->svlan_p = value;
1585 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1586 } else {
1587 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1588 }
1589 return count;
1590 }
1591
1592 if (!strcmp(name, "svlan_cfi")) {
1593 len = num_arg(&user_buffer[i], 1, &value);
1594 if (len < 0) {
1595 return len;
1596 }
1597 i += len;
1598 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1599 pkt_dev->svlan_cfi = value;
1600 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1601 } else {
1602 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1603 }
ca6549af
SW		 1604 return count;
1605 }
1606
1ca7768c
FF		 1607 if (!strcmp(name, "tos")) {
1608 __u32 tmp_value = 0;
1609 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1610 if (len < 0) {
1611 return len;
1612 }
1613 i += len;
1614 if (len == 2) {
1615 pkt_dev->tos = tmp_value;
1616 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1617 } else {
1618 sprintf(pg_result, "ERROR: tos must be 00-ff");
1619 }
1620 return count;
1621 }
1622
1623 if (!strcmp(name, "traffic_class")) {
1624 __u32 tmp_value = 0;
1625 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
1626 if (len < 0) {
1627 return len;
1628 }
1629 i += len;
1630 if (len == 2) {
1631 pkt_dev->traffic_class = tmp_value;
1632 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1633 } else {
1634 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1635 }
1636 return count;
1637 }
1638
1da177e4
LT		 1639 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1640 return -EINVAL;
1641}
1642
d50a6b56 1643static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1644{
d50a6b56
SH		 1645 return single_open(file, pktgen_if_show, PDE(inode)->data);
1646}
1da177e4 1647
9a32144e 1648static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1649 .owner = THIS_MODULE,
1650 .open = pktgen_if_open,
1651 .read = seq_read,
1652 .llseek = seq_lseek,
1653 .write = pktgen_if_write,
1654 .release = single_release,
d50a6b56 1655};
1da177e4 1656
d50a6b56
SH		 1657static int pktgen_thread_show(struct seq_file *seq, void *v)
1658{
222f1806 1659 struct pktgen_thread *t = seq->private;
c26a8016 1660 struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1661
1662 BUG_ON(!t);
1da177e4 1663
222f1806 1664 seq_printf(seq, "Running: ");
1da177e4 1665
222f1806 1666 if_lock(t);
c26a8016 1667 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1668 if (pkt_dev->running)
39df232f 1669 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4 1670
222f1806
LC		 1671 seq_printf(seq, "\nStopped: ");
1672
c26a8016 1673 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1674 if (!pkt_dev->running)
39df232f 1675 seq_printf(seq, "%s ", pkt_dev->odev->name);
1da177e4
LT		 1676
1677 if (t->result[0])
d50a6b56 1678 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1679 else
d50a6b56 1680 seq_printf(seq, "\nResult: NA\n");
1da177e4 1681
222f1806 1682 if_unlock(t);
1da177e4 1683
d50a6b56 1684 return 0;
1da177e4
LT		 1685}
1686
d50a6b56 1687static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1688 const char __user * user_buffer,
1689 size_t count, loff_t * offset)
1da177e4 1690{
222f1806
LC		 1691 struct seq_file *seq = (struct seq_file *)file->private_data;
1692 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1693 int i = 0, max, len, ret;
1694 char name[40];
222f1806 1695 char *pg_result;
d50a6b56 1696
1da177e4 1697 if (count < 1) {
222f1806 1698 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1699 return -EINVAL;
1700 }
d50a6b56 1701
1da177e4 1702 max = count - i;
222f1806
LC		 1703 len = count_trail_chars(&user_buffer[i], max);
1704 if (len < 0)
d50a6b56
SH		 1705 return len;
1706
1da177e4 1707 i += len;
d50a6b56 1708
1da177e4
LT		 1709 /* Read variable name */
1710
1711 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1712 if (len < 0)
d50a6b56 1713 return len;
222f1806 1714
1da177e4
LT		 1715 memset(name, 0, sizeof(name));
1716 if (copy_from_user(name, &user_buffer[i], len))
1717 return -EFAULT;
1718 i += len;
d50a6b56 1719
222f1806 1720 max = count - i;
1da177e4 1721 len = count_trail_chars(&user_buffer[i], max);
222f1806 1722 if (len < 0)
d50a6b56
SH		 1723 return len;
1724
1da177e4
LT		 1725 i += len;
1726
d50a6b56 1727 if (debug)
25a8b254
DM		 1728 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1729 name, (unsigned long)count);
1da177e4 1730
222f1806 1731 if (!t) {
25a8b254 1732 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1733 ret = -EINVAL;
1734 goto out;
1735 }
1736
1737 pg_result = &(t->result[0]);
1738
222f1806
LC		 1739 if (!strcmp(name, "add_device")) {
1740 char f[32];
1741 memset(f, 0, 32);
1da177e4 1742 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1743 if (len < 0) {
1744 ret = len;
1da177e4
LT		 1745 goto out;
1746 }
222f1806 1747 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1748 return -EFAULT;
1749 i += len;
6146e6a4 1750 mutex_lock(&pktgen_thread_lock);
222f1806 1751 pktgen_add_device(t, f);
6146e6a4 1752 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1753 ret = count;
1754 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1755 goto out;
1756 }
1757
222f1806 1758 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1759 mutex_lock(&pktgen_thread_lock);
95ed63f7 1760 t->control |= T_REMDEVALL;
6146e6a4 1761 mutex_unlock(&pktgen_thread_lock);
222f1806 1762 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1763 ret = count;
222f1806 1764 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1765 goto out;
1766 }
1767
222f1806 1768 if (!strcmp(name, "max_before_softirq")) {
b163911f 1769 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1770 ret = count;
1da177e4
LT		 1771 goto out;
1772 }
1773
1774 ret = -EINVAL;
222f1806 1775out:
1da177e4
LT		 1776 return ret;
1777}
1778
d50a6b56 1779static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1780{
d50a6b56 1781 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1782}
1783
9a32144e 1784static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1785 .owner = THIS_MODULE,
1786 .open = pktgen_thread_open,
1787 .read = seq_read,
1788 .llseek = seq_lseek,
1789 .write = pktgen_thread_write,
1790 .release = single_release,
d50a6b56 1791};
1da177e4
LT		 1792
1793/* Think find or remove for NN */
222f1806 1794static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1795{
1796 struct pktgen_thread *t;
1797 struct pktgen_dev *pkt_dev = NULL;
1798
cdcdbe0b 1799 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4
LT		 1800 pkt_dev = pktgen_find_dev(t, ifname);
1801 if (pkt_dev) {
222f1806
LC		 1802 if (remove) {
1803 if_lock(t);
1804 pkt_dev->removal_mark = 1;
1805 t->control |= T_REMDEV;
1806 if_unlock(t);
1807 }
1da177e4
LT		 1808 break;
1809 }
1da177e4 1810 }
222f1806 1811 return pkt_dev;
1da177e4
LT		 1812}
1813
95ed63f7
AK		 1814/*
1815 * mark a device for removal
1816 */
39df232f 1817static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1818{
1819 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1820 const int max_tries = 10, msec_per_try = 125;
1821 int i = 0;
95ed63f7 1822
6146e6a4 1823 mutex_lock(&pktgen_thread_lock);
25c4e53a 1824 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1825
222f1806 1826 while (1) {
95ed63f7
AK		 1827
1828 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1829 if (pkt_dev == NULL)
1830 break; /* success */
95ed63f7 1831
6146e6a4 1832 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1833 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1834 "to disappear....\n", ifname);
95ed63f7 1835 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1836 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1837
1838 if (++i >= max_tries) {
25a8b254
DM		 1839 printk(KERN_ERR "pktgen_mark_device: timed out after "
1840 "waiting %d msec for device %s to be removed\n",
222f1806 1841 msec_per_try * i, ifname);
95ed63f7
AK		 1842 break;
1843 }
1844
1845 }
1846
6146e6a4 1847 mutex_unlock(&pktgen_thread_lock);
39df232f 1848}
95ed63f7 1849
39df232f
SH		 1850static void pktgen_change_name(struct net_device *dev)
1851{
1852 struct pktgen_thread *t;
1853
1854 list_for_each_entry(t, &pktgen_threads, th_list) {
1855 struct pktgen_dev *pkt_dev;
1856
1857 list_for_each_entry(pkt_dev, &t->if_list, list) {
1858 if (pkt_dev->odev != dev)
1859 continue;
1860
1861 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1862
1863 pkt_dev->entry = create_proc_entry(dev->name, 0600,
1864 pg_proc_dir);
1865 if (!pkt_dev->entry)
1866 printk(KERN_ERR "pktgen: can't move proc "
1867 " entry for '%s'\n", dev->name);
1868 break;
1869 }
1870 }
1da177e4
LT		 1871}
1872
222f1806
LC		 1873static int pktgen_device_event(struct notifier_block *unused,
1874 unsigned long event, void *ptr)
1da177e4 1875{
39df232f 1876 struct net_device *dev = ptr;
1da177e4 1877
c346dca1 1878 if (dev_net(dev) != &init_net)
e9dc8653
EB		 1879 return NOTIFY_DONE;
1880
1da177e4
LT		 1881 /* It is OK that we do not hold the group lock right now,
1882 * as we run under the RTNL lock.
1883 */
1884
1885 switch (event) {
39df232f
SH		 1886 case NETDEV_CHANGENAME:
1887 pktgen_change_name(dev);
1da177e4 1888 break;
222f1806 1889
1da177e4 1890 case NETDEV_UNREGISTER:
222f1806 1891 pktgen_mark_device(dev->name);
1da177e4 1892 break;
3ff50b79 1893 }
1da177e4
LT		 1894
1895 return NOTIFY_DONE;
1896}
1897
1898/* Associate pktgen_dev with a device. */
1899
39df232f 1900static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1901{
1da177e4 1902 struct net_device *odev;
39df232f 1903 int err;
1da177e4
LT		 1904
1905 /* Clean old setups */
1da177e4
LT		 1906 if (pkt_dev->odev) {
1907 dev_put(pkt_dev->odev);
222f1806
LC		 1908 pkt_dev->odev = NULL;
1909 }
1da177e4 1910
881d966b 1911 odev = dev_get_by_name(&init_net, ifname);
1da177e4 1912 if (!odev) {
25a8b254 1913 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 1914 return -ENODEV;
1da177e4 1915 }
39df232f 1916
1da177e4 1917 if (odev->type != ARPHRD_ETHER) {
25a8b254 1918 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1919 err = -EINVAL;
1920 } else if (!netif_running(odev)) {
25a8b254 1921 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 1922 err = -ENETDOWN;
1923 } else {
1924 pkt_dev->odev = odev;
1925 return 0;
1da177e4 1926 }
1da177e4 1927
1da177e4 1928 dev_put(odev);
39df232f 1929 return err;
1da177e4
LT		 1930}
1931
1932/* Read pkt_dev from the interface and set up internal pktgen_dev
1933 * structure to have the right information to create/send packets
1934 */
1935static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
1936{
222f1806 1937 if (!pkt_dev->odev) {
25a8b254
DM		 1938 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
1939 "setup_inject.\n");
222f1806
LC		 1940 sprintf(pkt_dev->result,
1941 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
1942 return;
1943 }
1944
1945 /* Default to the interface's mac if not explicitly set. */
1da177e4 1946
f404e9a6 1947 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 1948 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 1949
222f1806 1950 /* Set up Dest MAC */
f404e9a6 1951 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 1952
222f1806
LC		 1953 /* Set up pkt size */
1954 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
1955
1956 if (pkt_dev->flags & F_IPV6) {
1da177e4 1957 /*
4ec93edb 1958 * Skip this automatic address setting until locks or functions
1da177e4
LT		 1959 * gets exported
1960 */
1961
1962#ifdef NOTNOW
222f1806 1963 int i, set = 0, err = 1;
1da177e4
LT		 1964 struct inet6_dev *idev;
1965
222f1806
LC		 1966 for (i = 0; i < IN6_ADDR_HSIZE; i++)
1967 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 1968 set = 1;
1969 break;
1970 }
1971
222f1806
LC		 1972 if (!set) {
1973
1da177e4
LT		 1974 /*
1975 * Use linklevel address if unconfigured.
1976 *
1977 * use ipv6_get_lladdr if/when it's get exported
1978 */
1979
8814c4b5 1980 rcu_read_lock();
1da177e4
LT		 1981 if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
1982 struct inet6_ifaddr *ifp;
1983
1984 read_lock_bh(&idev->lock);
222f1806
LC		 1985 for (ifp = idev->addr_list; ifp;
1986 ifp = ifp->if_next) {
1987 if (ifp->scope == IFA_LINK
1988 && !(ifp->
1989 flags & IFA_F_TENTATIVE)) {
1990 ipv6_addr_copy(&pkt_dev->
1991 cur_in6_saddr,
1992 &ifp->addr);
1da177e4
LT		 1993 err = 0;
1994 break;
1995 }
1996 }
1997 read_unlock_bh(&idev->lock);
1998 }
8814c4b5 1999 rcu_read_unlock();
222f1806 2000 if (err)
25a8b254
DM		 2001 printk(KERN_ERR "pktgen: ERROR: IPv6 link "
2002 "address not availble.\n");
1da177e4
LT		 2003 }
2004#endif
222f1806 2005 } else {
1da177e4
LT		 2006 pkt_dev->saddr_min = 0;
2007 pkt_dev->saddr_max = 0;
2008 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2009
2010 struct in_device *in_dev;
1da177e4
LT		 2011
2012 rcu_read_lock();
e5ed6399 2013 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2014 if (in_dev) {
2015 if (in_dev->ifa_list) {
222f1806
LC		 2016 pkt_dev->saddr_min =
2017 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2018 pkt_dev->saddr_max = pkt_dev->saddr_min;
2019 }
1da177e4
LT		 2020 }
2021 rcu_read_unlock();
222f1806 2022 } else {
1da177e4
LT		 2023 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2024 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2025 }
2026
2027 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2028 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2029 }
222f1806
LC		 2030 /* Initialize current values. */
2031 pkt_dev->cur_dst_mac_offset = 0;
2032 pkt_dev->cur_src_mac_offset = 0;
2033 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2034 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2035 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2036 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2037 pkt_dev->nflows = 0;
2038}
2039
2040static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us)
2041{
2042 __u64 start;
2043 __u64 now;
2044
2045 start = now = getCurUs();
1da177e4 2046 while (now < spin_until_us) {
b4099fab 2047 /* TODO: optimize sleeping behavior */
222f1806 2048 if (spin_until_us - now > jiffies_to_usecs(1) + 1)
121caf57
NA		 2049 schedule_timeout_interruptible(1);
2050 else if (spin_until_us - now > 100) {
1da177e4
LT		 2051 if (!pkt_dev->running)
2052 return;
2053 if (need_resched())
2054 schedule();
2055 }
2056
2057 now = getCurUs();
2058 }
2059
2060 pkt_dev->idle_acc += now - start;
2061}
2062
16dab72f
JHS		 2063static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2064{
a553e4a6 2065 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2066 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2067 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2068 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2069}
2070
007a531b
JHS		 2071static inline int f_seen(struct pktgen_dev *pkt_dev, int flow)
2072{
2073
2074 if (pkt_dev->flows[flow].flags & F_INIT)
2075 return 1;
2076 else
2077 return 0;
2078}
2079
2080static inline int f_pick(struct pktgen_dev *pkt_dev)
2081{
2082 int flow = pkt_dev->curfl;
2083
2084 if (pkt_dev->flags & F_FLOW_SEQ) {
2085 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2086 /* reset time */
2087 pkt_dev->flows[flow].count = 0;
2088 pkt_dev->curfl += 1;
2089 if (pkt_dev->curfl >= pkt_dev->cflows)
2090 pkt_dev->curfl = 0; /*reset */
2091 }
2092 } else {
2093 flow = random32() % pkt_dev->cflows;
2094
2095 if (pkt_dev->flows[flow].count > pkt_dev->lflow)
2096 pkt_dev->flows[flow].count = 0;
2097 }
2098
2099 return pkt_dev->curfl;
2100}
2101
a553e4a6
JHS		 2102
2103#ifdef CONFIG_XFRM
2104/* If there was already an IPSEC SA, we keep it as is, else
2105 * we go look for it ...
2106*/
fea1ab0f 2107static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2108{
2109 struct xfrm_state *x = pkt_dev->flows[flow].x;
2110 if (!x) {
2111 /*slow path: we dont already have xfrm_state*/
2112 x = xfrm_stateonly_find((xfrm_address_t *)&pkt_dev->cur_daddr,
2113 (xfrm_address_t *)&pkt_dev->cur_saddr,
2114 AF_INET,
2115 pkt_dev->ipsmode,
2116 pkt_dev->ipsproto, 0);
2117 if (x) {
2118 pkt_dev->flows[flow].x = x;
2119 set_pkt_overhead(pkt_dev);
2120 pkt_dev->pkt_overhead+=x->props.header_len;
2121 }
2122
2123 }
2124}
2125#endif
1da177e4
LT		 2126/* Increment/randomize headers according to flags and current values
2127 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2128 */
222f1806
LC		 2129static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2130{
2131 __u32 imn;
2132 __u32 imx;
2133 int flow = 0;
1da177e4 2134
007a531b
JHS		 2135 if (pkt_dev->cflows)
2136 flow = f_pick(pkt_dev);
1da177e4
LT		 2137
2138 /* Deal with source MAC */
222f1806
LC		 2139 if (pkt_dev->src_mac_count > 1) {
2140 __u32 mc;
2141 __u32 tmp;
2142
2143 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2144 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2145 else {
2146 mc = pkt_dev->cur_src_mac_offset++;
2147 if (pkt_dev->cur_src_mac_offset >
2148 pkt_dev->src_mac_count)
2149 pkt_dev->cur_src_mac_offset = 0;
2150 }
2151
2152 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2153 pkt_dev->hh[11] = tmp;
2154 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2155 pkt_dev->hh[10] = tmp;
2156 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2157 pkt_dev->hh[9] = tmp;
2158 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2159 pkt_dev->hh[8] = tmp;
2160 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2161 pkt_dev->hh[7] = tmp;
2162 }
2163
2164 /* Deal with Destination MAC */
2165 if (pkt_dev->dst_mac_count > 1) {
2166 __u32 mc;
2167 __u32 tmp;
2168
2169 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2170 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2171
2172 else {
2173 mc = pkt_dev->cur_dst_mac_offset++;
2174 if (pkt_dev->cur_dst_mac_offset >
2175 pkt_dev->dst_mac_count) {
2176 pkt_dev->cur_dst_mac_offset = 0;
2177 }
2178 }
2179
2180 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2181 pkt_dev->hh[5] = tmp;
2182 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2183 pkt_dev->hh[4] = tmp;
2184 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2185 pkt_dev->hh[3] = tmp;
2186 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2187 pkt_dev->hh[2] = tmp;
2188 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2189 pkt_dev->hh[1] = tmp;
2190 }
2191
ca6549af
SW		 2192 if (pkt_dev->flags & F_MPLS_RND) {
2193 unsigned i;
e71a4783 2194 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2195 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2196 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2197 ((__force __be32)random32() &
ca6549af
SW		 2198 htonl(0x000fffff));
2199 }
2200
34954ddc 2201 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2202 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2203 }
2204
2205 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2206 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2207 }
2208
222f1806
LC		 2209 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2210 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2211 pkt_dev->cur_udp_src = random32() %
2212 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2213 + pkt_dev->udp_src_min;
222f1806
LC		 2214
2215 else {
1da177e4
LT		 2216 pkt_dev->cur_udp_src++;
2217 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2218 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2219 }
2220 }
2221
2222 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2223 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2224 pkt_dev->cur_udp_dst = random32() %
2225 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2226 + pkt_dev->udp_dst_min;
222f1806 2227 } else {
1da177e4 2228 pkt_dev->cur_udp_dst++;
222f1806 2229 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2230 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2231 }
2232 }
1da177e4
LT		 2233
2234 if (!(pkt_dev->flags & F_IPV6)) {
2235
222f1806
LC		 2236 if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
2237 ntohl(pkt_dev->
2238 saddr_max))) {
1da177e4 2239 __u32 t;
222f1806 2240 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2241 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2242 else {
2243 t = ntohl(pkt_dev->cur_saddr);
2244 t++;
2245 if (t > imx) {
2246 t = imn;
2247 }
2248 }
2249 pkt_dev->cur_saddr = htonl(t);
2250 }
222f1806 2251
007a531b 2252 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2253 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2254 } else {
252e3346
AV		 2255 imn = ntohl(pkt_dev->daddr_min);
2256 imx = ntohl(pkt_dev->daddr_max);
2257 if (imn < imx) {
1da177e4 2258 __u32 t;
252e3346 2259 __be32 s;
1da177e4
LT		 2260 if (pkt_dev->flags & F_IPDST_RND) {
2261
5fa6fc76 2262 t = random32() % (imx - imn) + imn;
252e3346 2263 s = htonl(t);
1da177e4 2264
21cf2253
JP		 2265 while (ipv4_is_loopback(s) ||
2266 ipv4_is_multicast(s) ||
1e637c74 2267 ipv4_is_lbcast(s) ||
21cf2253
JP		 2268 ipv4_is_zeronet(s) ||
2269 ipv4_is_local_multicast(s)) {
5fa6fc76 2270 t = random32() % (imx - imn) + imn;
252e3346 2271 s = htonl(t);
1da177e4 2272 }
252e3346
AV		 2273 pkt_dev->cur_daddr = s;
2274 } else {
1da177e4
LT		 2275 t = ntohl(pkt_dev->cur_daddr);
2276 t++;
2277 if (t > imx) {
2278 t = imn;
2279 }
2280 pkt_dev->cur_daddr = htonl(t);
2281 }
2282 }
222f1806 2283 if (pkt_dev->cflows) {
007a531b 2284 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2285 pkt_dev->flows[flow].cur_daddr =
2286 pkt_dev->cur_daddr;
a553e4a6
JHS		 2287#ifdef CONFIG_XFRM
2288 if (pkt_dev->flags & F_IPSEC_ON)
2289 get_ipsec_sa(pkt_dev, flow);
2290#endif
1da177e4
LT		 2291 pkt_dev->nflows++;
2292 }
2293 }
222f1806
LC		 2294 } else { /* IPV6 * */
2295
2296 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2297 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2298 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2299 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2300 else {
2301 int i;
2302
2303 /* Only random destinations yet */
2304
222f1806 2305 for (i = 0; i < 4; i++) {
1da177e4 2306 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2307 (((__force __be32)random32() |
222f1806
LC		 2308 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2309 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2310 }
222f1806 2311 }
1da177e4
LT		 2312 }
2313
222f1806
LC		 2314 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2315 __u32 t;
2316 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2317 t = random32() %
2318 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2319 + pkt_dev->min_pkt_size;
222f1806 2320 } else {
1da177e4 2321 t = pkt_dev->cur_pkt_size + 1;
222f1806 2322 if (t > pkt_dev->max_pkt_size)
1da177e4 2323 t = pkt_dev->min_pkt_size;
222f1806
LC		 2324 }
2325 pkt_dev->cur_pkt_size = t;
2326 }
1da177e4 2327
45b270f8
RO		 2328 if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
2329 __u16 t;
2330 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2331 t = random32() %
2332 (pkt_dev->queue_map_max - pkt_dev->queue_map_min + 1)
2333 + pkt_dev->queue_map_min;
2334 } else {
2335 t = pkt_dev->cur_queue_map + 1;
2336 if (t > pkt_dev->queue_map_max)
2337 t = pkt_dev->queue_map_min;
2338 }
2339 pkt_dev->cur_queue_map = t;
2340 }
2341
1da177e4
LT		 2342 pkt_dev->flows[flow].count++;
2343}
2344
a553e4a6
JHS		 2345
2346#ifdef CONFIG_XFRM
2347static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2348{
2349 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2350 int err = 0;
2351 struct iphdr *iph;
2352
2353 if (!x)
2354 return 0;
2355 /* XXX: we dont support tunnel mode for now until
2356 * we resolve the dst issue */
2357 if (x->props.mode != XFRM_MODE_TRANSPORT)
2358 return 0;
2359
2360 spin_lock(&x->lock);
2361 iph = ip_hdr(skb);
2362
13996378 2363 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2364 if (err)
2365 goto error;
2366 err = x->type->output(x, skb);
2367 if (err)
2368 goto error;
2369
2370 x->curlft.bytes +=skb->len;
2371 x->curlft.packets++;
a553e4a6
JHS		 2372error:
2373 spin_unlock(&x->lock);
2374 return err;
2375}
2376
2377static inline void free_SAs(struct pktgen_dev *pkt_dev)
2378{
2379 if (pkt_dev->cflows) {
2380 /* let go of the SAs if we have them */
2381 int i = 0;
2382 for (; i < pkt_dev->nflows; i++){
2383 struct xfrm_state *x = pkt_dev->flows[i].x;
2384 if (x) {
2385 xfrm_state_put(x);
2386 pkt_dev->flows[i].x = NULL;
2387 }
2388 }
2389 }
2390}
2391
2392static inline int process_ipsec(struct pktgen_dev *pkt_dev,
2393 struct sk_buff *skb, __be16 protocol)
2394{
2395 if (pkt_dev->flags & F_IPSEC_ON) {
2396 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2397 int nhead = 0;
2398 if (x) {
2399 int ret;
2400 __u8 *eth;
2401 nhead = x->props.header_len - skb_headroom(skb);
2402 if (nhead >0) {
2403 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2404 if (ret < 0) {
25a8b254
DM		 2405 printk(KERN_ERR "Error expanding "
2406 "ipsec packet %d\n",ret);
a553e4a6
JHS		 2407 return 0;
2408 }
2409 }
2410
2411 /* ipsec is not expecting ll header */
2412 skb_pull(skb, ETH_HLEN);
2413 ret = pktgen_output_ipsec(skb, pkt_dev);
2414 if (ret) {
25a8b254
DM		 2415 printk(KERN_ERR "Error creating ipsec "
2416 "packet %d\n",ret);
a553e4a6
JHS		 2417 kfree_skb(skb);
2418 return 0;
2419 }
2420 /* restore ll */
2421 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2422 memcpy(eth, pkt_dev->hh, 12);
2423 *(u16 *) & eth[12] = protocol;
2424 }
2425 }
2426 return 1;
2427}
2428#endif
2429
ca6549af
SW		 2430static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2431{
2432 unsigned i;
e71a4783 2433 for (i = 0; i < pkt_dev->nr_labels; i++) {
ca6549af
SW		 2434 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
2435 }
2436 mpls--;
2437 *mpls |= MPLS_STACK_BOTTOM;
2438}
2439
0f37c605
AV		 2440static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2441 unsigned int prio)
2442{
2443 return htons(id | (cfi << 12) | (prio << 13));
2444}
2445
222f1806
LC		 2446static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2447 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2448{
2449 struct sk_buff *skb = NULL;
2450 __u8 *eth;
2451 struct udphdr *udph;
2452 int datalen, iplen;
2453 struct iphdr *iph;
222f1806 2454 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2455 __be16 protocol = htons(ETH_P_IP);
ca6549af 2456 __be32 *mpls;
34954ddc
FF		 2457 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2458 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2459 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2460 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
2461
ca6549af
SW		 2462
2463 if (pkt_dev->nr_labels)
d5f1ce9a 2464 protocol = htons(ETH_P_MPLS_UC);
222f1806 2465
34954ddc 2466 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2467 protocol = htons(ETH_P_8021Q);
34954ddc 2468
64053bee
RO		 2469 /* Update any of the values, used when we're incrementing various
2470 * fields.
2471 */
2472 mod_cur_headers(pkt_dev);
2473
7ac5459e 2474 datalen = (odev->hard_header_len + 16) & ~0xf;
ca6549af 2475 skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen +
16dab72f 2476 pkt_dev->pkt_overhead, GFP_ATOMIC);
1da177e4
LT		 2477 if (!skb) {
2478 sprintf(pkt_dev->result, "No memory");
2479 return NULL;
2480 }
2481
7ac5459e 2482 skb_reserve(skb, datalen);
1da177e4
LT		 2483
2484 /* Reserve for ethernet and IP header */
2485 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2486 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2487 if (pkt_dev->nr_labels)
2488 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2489
2490 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2491 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2492 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2493 *svlan_tci = build_tci(pkt_dev->svlan_id,
2494 pkt_dev->svlan_cfi,
2495 pkt_dev->svlan_p);
34954ddc 2496 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2497 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2498 }
2499 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2500 *vlan_tci = build_tci(pkt_dev->vlan_id,
2501 pkt_dev->vlan_cfi,
2502 pkt_dev->vlan_p);
34954ddc 2503 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2504 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2505 }
2506
27a884dc 2507 skb->network_header = skb->tail;
b0e380b1 2508 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2509 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
dfa40911 2510 skb_set_queue_mapping(skb, pkt_dev->cur_queue_map);
ddc7b8e3
ACM		 2511 iph = ip_hdr(skb);
2512 udph = udp_hdr(skb);
1da177e4 2513
1da177e4 2514 memcpy(eth, pkt_dev->hh, 12);
252e3346 2515 *(__be16 *) & eth[12] = protocol;
1da177e4 2516
ca6549af
SW		 2517 /* Eth + IPh + UDPh + mpls */
2518 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2519 pkt_dev->pkt_overhead;
222f1806 2520 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2521 datalen = sizeof(struct pktgen_hdr);
222f1806 2522
1da177e4
LT		 2523 udph->source = htons(pkt_dev->cur_udp_src);
2524 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2525 udph->len = htons(datalen + 8); /* DATA + udphdr */
2526 udph->check = 0; /* No checksum */
1da177e4
LT		 2527
2528 iph->ihl = 5;
2529 iph->version = 4;
2530 iph->ttl = 32;
1ca7768c 2531 iph->tos = pkt_dev->tos;
222f1806 2532 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2533 iph->saddr = pkt_dev->cur_saddr;
2534 iph->daddr = pkt_dev->cur_daddr;
2535 iph->frag_off = 0;
2536 iplen = 20 + 8 + datalen;
2537 iph->tot_len = htons(iplen);
2538 iph->check = 0;
222f1806 2539 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2540 skb->protocol = protocol;
b0e380b1 2541 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2542 pkt_dev->pkt_overhead);
1da177e4
LT		 2543 skb->dev = odev;
2544 skb->pkt_type = PACKET_HOST;
2545
222f1806
LC		 2546 if (pkt_dev->nfrags <= 0)
2547 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2548 else {
2549 int frags = pkt_dev->nfrags;
2550 int i;
2551
222f1806
LC		 2552 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2553
1da177e4
LT		 2554 if (frags > MAX_SKB_FRAGS)
2555 frags = MAX_SKB_FRAGS;
222f1806
LC		 2556 if (datalen > frags * PAGE_SIZE) {
2557 skb_put(skb, datalen - frags * PAGE_SIZE);
2558 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2559 }
2560
2561 i = 0;
2562 while (datalen > 0) {
2563 struct page *page = alloc_pages(GFP_KERNEL, 0);
2564 skb_shinfo(skb)->frags[i].page = page;
2565 skb_shinfo(skb)->frags[i].page_offset = 0;
2566 skb_shinfo(skb)->frags[i].size =
222f1806 2567 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2568 datalen -= skb_shinfo(skb)->frags[i].size;
2569 skb->len += skb_shinfo(skb)->frags[i].size;
2570 skb->data_len += skb_shinfo(skb)->frags[i].size;
2571 i++;
2572 skb_shinfo(skb)->nr_frags = i;
2573 }
2574
2575 while (i < frags) {
2576 int rem;
2577
2578 if (i == 0)
2579 break;
2580
2581 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2582 if (rem == 0)
2583 break;
2584
2585 skb_shinfo(skb)->frags[i - 1].size -= rem;
2586
222f1806
LC		 2587 skb_shinfo(skb)->frags[i] =
2588 skb_shinfo(skb)->frags[i - 1];
1da177e4 2589 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2590 skb_shinfo(skb)->frags[i].page =
2591 skb_shinfo(skb)->frags[i - 1].page;
2592 skb_shinfo(skb)->frags[i].page_offset +=
2593 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2594 skb_shinfo(skb)->frags[i].size = rem;
2595 i++;
2596 skb_shinfo(skb)->nr_frags = i;
2597 }
2598 }
2599
222f1806
LC		 2600 /* Stamp the time, and sequence number, convert them to network byte order */
2601
2602 if (pgh) {
2603 struct timeval timestamp;
2604
2605 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2606 pgh->seq_num = htonl(pkt_dev->seq_num);
2607
2608 do_gettimeofday(&timestamp);
2609 pgh->tv_sec = htonl(timestamp.tv_sec);
2610 pgh->tv_usec = htonl(timestamp.tv_usec);
2611 }
1da177e4 2612
a553e4a6
JHS		 2613#ifdef CONFIG_XFRM
2614 if (!process_ipsec(pkt_dev, skb, protocol))
2615 return NULL;
2616#endif
2617
1da177e4
LT		 2618 return skb;
2619}
2620
2621/*
4ec93edb 2622 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2623 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2624 *
4ec93edb 2625 * Slightly modified for kernel.
1da177e4
LT		 2626 * Should be candidate for net/ipv4/utils.c
2627 * --ro
2628 */
2629
222f1806 2630static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2631{
2632 unsigned int i;
222f1806 2633 unsigned int len = 0;
1da177e4
LT		 2634 unsigned long u;
2635 char suffix[16];
222f1806
LC		 2636 unsigned int prefixlen = 0;
2637 unsigned int suffixlen = 0;
252e3346 2638 __be32 tmp;
cfcabdcc 2639 char *pos;
1da177e4 2640
222f1806
LC		 2641 for (i = 0; i < 16; i++)
2642 ip[i] = 0;
1da177e4
LT		 2643
2644 for (;;) {
2645 if (*s == ':') {
2646 len++;
222f1806
LC		 2647 if (s[1] == ':') { /* Found "::", skip to part 2 */
2648 s += 2;
1da177e4
LT		 2649 len++;
2650 break;
2651 }
2652 s++;
2653 }
1da177e4 2654
cfcabdcc
SH		 2655 u = simple_strtoul(s, &pos, 16);
2656 i = pos - s;
222f1806
LC		 2657 if (!i)
2658 return 0;
2659 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2660
2661 /* the last 4 bytes may be written as IPv4 address */
2662
2663 tmp = in_aton(s);
222f1806
LC		 2664 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2665 return i + len;
1da177e4
LT		 2666 }
2667 ip[prefixlen++] = (u >> 8);
2668 ip[prefixlen++] = (u & 255);
222f1806
LC		 2669 s += i;
2670 len += i;
2671 if (prefixlen == 16)
1da177e4
LT		 2672 return len;
2673 }
2674
2675/* part 2, after "::" */
2676 for (;;) {
2677 if (*s == ':') {
222f1806 2678 if (suffixlen == 0)
1da177e4
LT		 2679 break;
2680 s++;
2681 len++;
222f1806 2682 } else if (suffixlen != 0)
1da177e4 2683 break;
cfcabdcc
SH		 2684
2685 u = simple_strtol(s, &pos, 16);
2686 i = pos - s;
1da177e4 2687 if (!i) {
222f1806
LC		 2688 if (*s)
2689 len--;
1da177e4
LT		 2690 break;
2691 }
222f1806 2692 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2693 tmp = in_aton(s);
222f1806
LC		 2694 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2695 sizeof(tmp));
2696 suffixlen += 4;
2697 len += strlen(s);
1da177e4
LT		 2698 break;
2699 }
2700 suffix[suffixlen++] = (u >> 8);
2701 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2702 s += i;
2703 len += i;
2704 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2705 break;
2706 }
222f1806
LC		 2707 for (i = 0; i < suffixlen; i++)
2708 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2709 return len;
2710}
2711
222f1806
LC		 2712static char tohex(char hexdigit)
2713{
2714 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2715}
2716
222f1806
LC		 2717static int fmt_xlong(char *s, unsigned int i)
2718{
2719 char *bak = s;
2720 *s = tohex((i >> 12) & 0xf);
2721 if (s != bak || *s != '0')
2722 ++s;
2723 *s = tohex((i >> 8) & 0xf);
2724 if (s != bak || *s != '0')
2725 ++s;
2726 *s = tohex((i >> 4) & 0xf);
2727 if (s != bak || *s != '0')
2728 ++s;
2729 *s = tohex(i & 0xf);
2730 return s - bak + 1;
1da177e4
LT		 2731}
2732
222f1806
LC		 2733static unsigned int fmt_ip6(char *s, const char ip[16])
2734{
1da177e4
LT		 2735 unsigned int len;
2736 unsigned int i;
2737 unsigned int temp;
2738 unsigned int compressing;
2739 int j;
2740
222f1806
LC		 2741 len = 0;
2742 compressing = 0;
2743 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2744
2745#ifdef V4MAPPEDPREFIX
222f1806
LC		 2746 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2747 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2748 temp = strlen(s);
2749 return len + temp;
1da177e4
LT		 2750 }
2751#endif
222f1806
LC		 2752 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2753 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2754 if (temp == 0) {
2755 if (!compressing) {
222f1806
LC		 2756 compressing = 1;
2757 if (j == 0) {
2758 *s++ = ':';
2759 ++len;
1da177e4
LT		 2760 }
2761 }
2762 } else {
2763 if (compressing) {
222f1806
LC		 2764 compressing = 0;
2765 *s++ = ':';
2766 ++len;
1da177e4 2767 }
222f1806
LC		 2768 i = fmt_xlong(s, temp);
2769 len += i;
2770 s += i;
2771 if (j < 14) {
1da177e4
LT		 2772 *s++ = ':';
2773 ++len;
2774 }
2775 }
2776 }
2777 if (compressing) {
222f1806
LC		 2778 *s++ = ':';
2779 ++len;
1da177e4 2780 }
222f1806 2781 *s = 0;
1da177e4
LT		 2782 return len;
2783}
2784
222f1806
LC		 2785static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2786 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2787{
2788 struct sk_buff *skb = NULL;
2789 __u8 *eth;
2790 struct udphdr *udph;
2791 int datalen;
2792 struct ipv6hdr *iph;
222f1806 2793 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2794 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2795 __be32 *mpls;
34954ddc
FF		 2796 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2797 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2798 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2799 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
ca6549af
SW		 2800
2801 if (pkt_dev->nr_labels)
d5f1ce9a 2802 protocol = htons(ETH_P_MPLS_UC);
64053bee 2803
34954ddc 2804 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2805 protocol = htons(ETH_P_8021Q);
34954ddc 2806
64053bee
RO		 2807 /* Update any of the values, used when we're incrementing various
2808 * fields.
2809 */
2810 mod_cur_headers(pkt_dev);
2811
ca6549af 2812 skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 +
16dab72f 2813 pkt_dev->pkt_overhead, GFP_ATOMIC);
1da177e4
LT		 2814 if (!skb) {
2815 sprintf(pkt_dev->result, "No memory");
2816 return NULL;
2817 }
2818
2819 skb_reserve(skb, 16);
2820
2821 /* Reserve for ethernet and IP header */
2822 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2823 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2824 if (pkt_dev->nr_labels)
2825 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2826
2827 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2828 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2829 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2830 *svlan_tci = build_tci(pkt_dev->svlan_id,
2831 pkt_dev->svlan_cfi,
2832 pkt_dev->svlan_p);
34954ddc 2833 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2834 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2835 }
2836 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2837 *vlan_tci = build_tci(pkt_dev->vlan_id,
2838 pkt_dev->vlan_cfi,
2839 pkt_dev->vlan_p);
34954ddc 2840 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2841 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2842 }
2843
27a884dc 2844 skb->network_header = skb->tail;
b0e380b1 2845 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2846 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
dfa40911 2847 skb_set_queue_mapping(skb, pkt_dev->cur_queue_map);
ddc7b8e3
ACM		 2848 iph = ipv6_hdr(skb);
2849 udph = udp_hdr(skb);
1da177e4 2850
1da177e4 2851 memcpy(eth, pkt_dev->hh, 12);
252e3346 2852 *(__be16 *) & eth[12] = protocol;
64053bee 2853
ca6549af
SW		 2854 /* Eth + IPh + UDPh + mpls */
2855 datalen = pkt_dev->cur_pkt_size - 14 -
2856 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2857 pkt_dev->pkt_overhead;
1da177e4 2858
222f1806 2859 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2860 datalen = sizeof(struct pktgen_hdr);
2861 if (net_ratelimit())
222f1806
LC		 2862 printk(KERN_INFO "pktgen: increased datalen to %d\n",
2863 datalen);
1da177e4
LT		 2864 }
2865
2866 udph->source = htons(pkt_dev->cur_udp_src);
2867 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2868 udph->len = htons(datalen + sizeof(struct udphdr));
2869 udph->check = 0; /* No checksum */
1da177e4 2870
d5f1ce9a 2871 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2872
1ca7768c
FF		 2873 if (pkt_dev->traffic_class) {
2874 /* Version + traffic class + flow (0) */
252e3346 2875 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2876 }
2877
1da177e4
LT		 2878 iph->hop_limit = 32;
2879
2880 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2881 iph->nexthdr = IPPROTO_UDP;
2882
2883 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2884 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2885
b0e380b1 2886 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2887 pkt_dev->pkt_overhead);
ca6549af 2888 skb->protocol = protocol;
1da177e4
LT		 2889 skb->dev = odev;
2890 skb->pkt_type = PACKET_HOST;
2891
222f1806
LC		 2892 if (pkt_dev->nfrags <= 0)
2893 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 2894 else {
2895 int frags = pkt_dev->nfrags;
2896 int i;
2897
222f1806
LC		 2898 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2899
1da177e4
LT		 2900 if (frags > MAX_SKB_FRAGS)
2901 frags = MAX_SKB_FRAGS;
222f1806
LC		 2902 if (datalen > frags * PAGE_SIZE) {
2903 skb_put(skb, datalen - frags * PAGE_SIZE);
2904 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2905 }
2906
2907 i = 0;
2908 while (datalen > 0) {
2909 struct page *page = alloc_pages(GFP_KERNEL, 0);
2910 skb_shinfo(skb)->frags[i].page = page;
2911 skb_shinfo(skb)->frags[i].page_offset = 0;
2912 skb_shinfo(skb)->frags[i].size =
222f1806 2913 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2914 datalen -= skb_shinfo(skb)->frags[i].size;
2915 skb->len += skb_shinfo(skb)->frags[i].size;
2916 skb->data_len += skb_shinfo(skb)->frags[i].size;
2917 i++;
2918 skb_shinfo(skb)->nr_frags = i;
2919 }
2920
2921 while (i < frags) {
2922 int rem;
2923
2924 if (i == 0)
2925 break;
2926
2927 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2928 if (rem == 0)
2929 break;
2930
2931 skb_shinfo(skb)->frags[i - 1].size -= rem;
2932
222f1806
LC		 2933 skb_shinfo(skb)->frags[i] =
2934 skb_shinfo(skb)->frags[i - 1];
1da177e4 2935 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2936 skb_shinfo(skb)->frags[i].page =
2937 skb_shinfo(skb)->frags[i - 1].page;
2938 skb_shinfo(skb)->frags[i].page_offset +=
2939 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2940 skb_shinfo(skb)->frags[i].size = rem;
2941 i++;
2942 skb_shinfo(skb)->nr_frags = i;
2943 }
2944 }
2945
222f1806 2946 /* Stamp the time, and sequence number, convert them to network byte order */
1da177e4 2947 /* should we update cloned packets too ? */
222f1806
LC		 2948 if (pgh) {
2949 struct timeval timestamp;
2950
2951 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2952 pgh->seq_num = htonl(pkt_dev->seq_num);
2953
2954 do_gettimeofday(&timestamp);
2955 pgh->tv_sec = htonl(timestamp.tv_sec);
2956 pgh->tv_usec = htonl(timestamp.tv_usec);
2957 }
34954ddc 2958 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 2959
1da177e4
LT		 2960 return skb;
2961}
2962
222f1806
LC		 2963static inline struct sk_buff *fill_packet(struct net_device *odev,
2964 struct pktgen_dev *pkt_dev)
1da177e4 2965{
222f1806 2966 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2967 return fill_packet_ipv6(odev, pkt_dev);
2968 else
2969 return fill_packet_ipv4(odev, pkt_dev);
2970}
2971
222f1806 2972static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2973{
222f1806
LC		 2974 pkt_dev->seq_num = 1;
2975 pkt_dev->idle_acc = 0;
1da177e4 2976 pkt_dev->sofar = 0;
222f1806
LC		 2977 pkt_dev->tx_bytes = 0;
2978 pkt_dev->errors = 0;
1da177e4
LT		 2979}
2980
2981/* Set up structure for sending pkts, clear counters */
2982
2983static void pktgen_run(struct pktgen_thread *t)
2984{
c26a8016 2985 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2986 int started = 0;
2987
25c4e53a 2988 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 2989
2990 if_lock(t);
c26a8016 2991 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 2992
2993 /*
2994 * setup odev and create initial packet.
2995 */
2996 pktgen_setup_inject(pkt_dev);
2997
222f1806 2998 if (pkt_dev->odev) {
1da177e4 2999 pktgen_clear_counters(pkt_dev);
222f1806 3000 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4
LT		 3001 pkt_dev->skb = NULL;
3002 pkt_dev->started_at = getCurUs();
222f1806 3003 pkt_dev->next_tx_us = getCurUs(); /* Transmit immediately */
1da177e4 3004 pkt_dev->next_tx_ns = 0;
16dab72f 3005 set_pkt_overhead(pkt_dev);
222f1806 3006
1da177e4
LT		 3007 strcpy(pkt_dev->result, "Starting");
3008 started++;
222f1806 3009 } else
1da177e4
LT		 3010 strcpy(pkt_dev->result, "Error starting");
3011 }
3012 if_unlock(t);
222f1806
LC		 3013 if (started)
3014 t->control &= ~(T_STOP);
1da177e4
LT		 3015}
3016
3017static void pktgen_stop_all_threads_ifs(void)
3018{
cdcdbe0b 3019 struct pktgen_thread *t;
1da177e4 3020
25c4e53a 3021 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3022
6146e6a4 3023 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3024
3025 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3026 t->control |= T_STOP;
cdcdbe0b 3027
6146e6a4 3028 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3029}
3030
222f1806 3031static int thread_is_running(struct pktgen_thread *t)
1da177e4 3032{
c26a8016 3033 struct pktgen_dev *pkt_dev;
222f1806 3034 int res = 0;
1da177e4 3035
c26a8016
LC		 3036 list_for_each_entry(pkt_dev, &t->if_list, list)
3037 if (pkt_dev->running) {
1da177e4
LT		 3038 res = 1;
3039 break;
3040 }
222f1806 3041 return res;
1da177e4
LT		 3042}
3043
222f1806 3044static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3045{
222f1806 3046 if_lock(t);
1da177e4 3047
222f1806 3048 while (thread_is_running(t)) {
1da177e4 3049
222f1806 3050 if_unlock(t);
1da177e4 3051
222f1806 3052 msleep_interruptible(100);
1da177e4 3053
222f1806
LC		 3054 if (signal_pending(current))
3055 goto signal;
3056 if_lock(t);
3057 }
3058 if_unlock(t);
3059 return 1;
3060signal:
3061 return 0;
1da177e4
LT		 3062}
3063
3064static int pktgen_wait_all_threads_run(void)
3065{
cdcdbe0b 3066 struct pktgen_thread *t;
1da177e4 3067 int sig = 1;
222f1806 3068
6146e6a4 3069 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3070
3071 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3072 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3073 if (sig == 0)
3074 break;
1da177e4 3075 }
cdcdbe0b
LC		 3076
3077 if (sig == 0)
3078 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3079 t->control |= (T_STOP);
cdcdbe0b 3080
6146e6a4 3081 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3082 return sig;
3083}
3084
3085static void pktgen_run_all_threads(void)
3086{
cdcdbe0b 3087 struct pktgen_thread *t;
1da177e4 3088
25c4e53a 3089 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3090
6146e6a4 3091 mutex_lock(&pktgen_thread_lock);
1da177e4 3092
cdcdbe0b 3093 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3094 t->control |= (T_RUN);
cdcdbe0b 3095
6146e6a4 3096 mutex_unlock(&pktgen_thread_lock);
1da177e4 3097
222f1806
LC		 3098 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3099
1da177e4
LT		 3100 pktgen_wait_all_threads_run();
3101}
3102
1da177e4
LT		 3103static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3104{
222f1806
LC		 3105 __u64 total_us, bps, mbps, pps, idle;
3106 char *p = pkt_dev->result;
3107
3108 total_us = pkt_dev->stopped_at - pkt_dev->started_at;
3109
3110 idle = pkt_dev->idle_acc;
3111
3112 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
3113 (unsigned long long)total_us,
3114 (unsigned long long)(total_us - idle),
3115 (unsigned long long)idle,
3116 (unsigned long long)pkt_dev->sofar,
3117 pkt_dev->cur_pkt_size, nr_frags);
3118
3119 pps = pkt_dev->sofar * USEC_PER_SEC;
3120
3121 while ((total_us >> 32) != 0) {
3122 pps >>= 1;
3123 total_us >>= 1;
3124 }
3125
3126 do_div(pps, total_us);
3127
3128 bps = pps * 8 * pkt_dev->cur_pkt_size;
3129
3130 mbps = bps;
3131 do_div(mbps, 1000000);
3132 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3133 (unsigned long long)pps,
3134 (unsigned long long)mbps,
3135 (unsigned long long)bps,
3136 (unsigned long long)pkt_dev->errors);
1da177e4 3137}
1da177e4
LT		 3138
3139/* Set stopped-at timer, remove from running list, do counters & statistics */
3140
222f1806 3141static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3142{
222f1806 3143 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3144
222f1806 3145 if (!pkt_dev->running) {
25a8b254
DM		 3146 printk(KERN_WARNING "pktgen: interface: %s is already "
3147 "stopped\n", pkt_dev->odev->name);
222f1806
LC		 3148 return -EINVAL;
3149 }
1da177e4 3150
222f1806
LC		 3151 pkt_dev->stopped_at = getCurUs();
3152 pkt_dev->running = 0;
1da177e4 3153
95ed63f7 3154 show_results(pkt_dev, nr_frags);
1da177e4 3155
222f1806 3156 return 0;
1da177e4
LT		 3157}
3158
222f1806 3159static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3160{
c26a8016 3161 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3162
1da177e4
LT		 3163 if_lock(t);
3164
c26a8016
LC		 3165 list_for_each_entry(pkt_dev, &t->if_list, list) {
3166 if (!pkt_dev->running)
222f1806
LC		 3167 continue;
3168 if (best == NULL)
c26a8016
LC		 3169 best = pkt_dev;
3170 else if (pkt_dev->next_tx_us < best->next_tx_us)
3171 best = pkt_dev;
1da177e4
LT		 3172 }
3173 if_unlock(t);
222f1806 3174 return best;
1da177e4
LT		 3175}
3176
222f1806
LC		 3177static void pktgen_stop(struct pktgen_thread *t)
3178{
c26a8016 3179 struct pktgen_dev *pkt_dev;
1da177e4 3180
25c4e53a 3181 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3182
222f1806 3183 if_lock(t);
1da177e4 3184
c26a8016
LC		 3185 list_for_each_entry(pkt_dev, &t->if_list, list) {
3186 pktgen_stop_device(pkt_dev);
3187 if (pkt_dev->skb)
3188 kfree_skb(pkt_dev->skb);
95ed63f7 3189
c26a8016 3190 pkt_dev->skb = NULL;
95ed63f7 3191 }
1da177e4 3192
222f1806 3193 if_unlock(t);
1da177e4
LT		 3194}
3195
95ed63f7
AK		 3196/*
3197 * one of our devices needs to be removed - find it
3198 * and remove it
3199 */
3200static void pktgen_rem_one_if(struct pktgen_thread *t)
3201{
c26a8016
LC		 3202 struct list_head *q, *n;
3203 struct pktgen_dev *cur;
95ed63f7 3204
25c4e53a 3205 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3206
3207 if_lock(t);
3208
c26a8016
LC		 3209 list_for_each_safe(q, n, &t->if_list) {
3210 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3211
222f1806
LC		 3212 if (!cur->removal_mark)
3213 continue;
95ed63f7
AK		 3214
3215 if (cur->skb)
3216 kfree_skb(cur->skb);
3217 cur->skb = NULL;
3218
3219 pktgen_remove_device(t, cur);
3220
3221 break;
3222 }
3223
3224 if_unlock(t);
3225}
3226
222f1806 3227static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3228{
c26a8016
LC		 3229 struct list_head *q, *n;
3230 struct pktgen_dev *cur;
222f1806
LC		 3231
3232 /* Remove all devices, free mem */
95ed63f7 3233
25c4e53a 3234 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3235 if_lock(t);
1da177e4 3236
c26a8016
LC		 3237 list_for_each_safe(q, n, &t->if_list) {
3238 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7
AK		 3239
3240 if (cur->skb)
3241 kfree_skb(cur->skb);
3242 cur->skb = NULL;
3243
1da177e4
LT		 3244 pktgen_remove_device(t, cur);
3245 }
3246
222f1806 3247 if_unlock(t);
1da177e4
LT		 3248}
3249
222f1806 3250static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3251{
222f1806 3252 /* Remove from the thread list */
1da177e4 3253
ee74baa7 3254 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3255
6146e6a4 3256 mutex_lock(&pktgen_thread_lock);
1da177e4 3257
cdcdbe0b
LC		 3258 list_del(&t->th_list);
3259
6146e6a4 3260 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3261}
3262
3263static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev)
3264{
3265 struct net_device *odev = NULL;
3266 __u64 idle_start = 0;
3267 int ret;
3268
3269 odev = pkt_dev->odev;
222f1806 3270
1da177e4
LT		 3271 if (pkt_dev->delay_us || pkt_dev->delay_ns) {
3272 u64 now;
3273
3274 now = getCurUs();
3275 if (now < pkt_dev->next_tx_us)
3276 spin(pkt_dev, pkt_dev->next_tx_us);
3277
3278 /* This is max DELAY, this has special meaning of
3279 * "never transmit"
3280 */
3281 if (pkt_dev->delay_us == 0x7FFFFFFF) {
3282 pkt_dev->next_tx_us = getCurUs() + pkt_dev->delay_us;
3283 pkt_dev->next_tx_ns = pkt_dev->delay_ns;
3284 goto out;
3285 }
3286 }
222f1806 3287
f25f4e44 3288 if ((netif_queue_stopped(odev) ||
378be2c0 3289 (pkt_dev->skb &&
668f895a 3290 netif_subqueue_stopped(odev, pkt_dev->skb))) ||
378be2c0 3291 need_resched()) {
1da177e4 3292 idle_start = getCurUs();
222f1806 3293
1da177e4
LT		 3294 if (!netif_running(odev)) {
3295 pktgen_stop_device(pkt_dev);
95ed63f7
AK		 3296 if (pkt_dev->skb)
3297 kfree_skb(pkt_dev->skb);
3298 pkt_dev->skb = NULL;
1da177e4
LT		 3299 goto out;
3300 }
222f1806 3301 if (need_resched())
1da177e4 3302 schedule();
222f1806 3303
1da177e4 3304 pkt_dev->idle_acc += getCurUs() - idle_start;
222f1806 3305
f25f4e44 3306 if (netif_queue_stopped(odev) ||
668f895a 3307 netif_subqueue_stopped(odev, pkt_dev->skb)) {
222f1806 3308 pkt_dev->next_tx_us = getCurUs(); /* TODO */
1da177e4 3309 pkt_dev->next_tx_ns = 0;
222f1806 3310 goto out; /* Try the next interface */
1da177e4
LT		 3311 }
3312 }
222f1806 3313
1da177e4 3314 if (pkt_dev->last_ok || !pkt_dev->skb) {
222f1806
LC		 3315 if ((++pkt_dev->clone_count >= pkt_dev->clone_skb)
3316 || (!pkt_dev->skb)) {
1da177e4 3317 /* build a new pkt */
222f1806 3318 if (pkt_dev->skb)
1da177e4 3319 kfree_skb(pkt_dev->skb);
222f1806 3320
1da177e4
LT		 3321 pkt_dev->skb = fill_packet(odev, pkt_dev);
3322 if (pkt_dev->skb == NULL) {
25a8b254
DM		 3323 printk(KERN_ERR "pktgen: ERROR: couldn't "
3324 "allocate skb in fill_packet.\n");
1da177e4 3325 schedule();
222f1806 3326 pkt_dev->clone_count--; /* back out increment, OOM */
1da177e4
LT		 3327 goto out;
3328 }
3329 pkt_dev->allocated_skbs++;
222f1806 3330 pkt_dev->clone_count = 0; /* reset counter */
1da177e4
LT		 3331 }
3332 }
95ed63f7 3333
932ff279 3334 netif_tx_lock_bh(odev);
f25f4e44 3335 if (!netif_queue_stopped(odev) &&
668f895a 3336 !netif_subqueue_stopped(odev, pkt_dev->skb)) {
1da177e4
LT		 3337
3338 atomic_inc(&(pkt_dev->skb->users));
222f1806 3339 retry_now:
1da177e4
LT		 3340 ret = odev->hard_start_xmit(pkt_dev->skb, odev);
3341 if (likely(ret == NETDEV_TX_OK)) {
222f1806 3342 pkt_dev->last_ok = 1;
1da177e4
LT		 3343 pkt_dev->sofar++;
3344 pkt_dev->seq_num++;
3345 pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
222f1806
LC		 3346
3347 } else if (ret == NETDEV_TX_LOCKED
1da177e4
LT		 3348 && (odev->features & NETIF_F_LLTX)) {
3349 cpu_relax();
3350 goto retry_now;
222f1806
LC		 3351 } else { /* Retry it next time */
3352
1da177e4 3353 atomic_dec(&(pkt_dev->skb->users));
222f1806 3354
1da177e4
LT		 3355 if (debug && net_ratelimit())
3356 printk(KERN_INFO "pktgen: Hard xmit error\n");
222f1806 3357
1da177e4
LT		 3358 pkt_dev->errors++;
3359 pkt_dev->last_ok = 0;
3360 }
3361
3362 pkt_dev->next_tx_us = getCurUs();
3363 pkt_dev->next_tx_ns = 0;
3364
3365 pkt_dev->next_tx_us += pkt_dev->delay_us;
3366 pkt_dev->next_tx_ns += pkt_dev->delay_ns;
3367
3368 if (pkt_dev->next_tx_ns > 1000) {
3369 pkt_dev->next_tx_us++;
3370 pkt_dev->next_tx_ns -= 1000;
3371 }
222f1806 3372 }
1da177e4 3373
222f1806
LC		 3374 else { /* Retry it next time */
3375 pkt_dev->last_ok = 0;
3376 pkt_dev->next_tx_us = getCurUs(); /* TODO */
1da177e4 3377 pkt_dev->next_tx_ns = 0;
222f1806 3378 }
1da177e4 3379
932ff279 3380 netif_tx_unlock_bh(odev);
222f1806 3381
1da177e4
LT		 3382 /* If pkt_dev->count is zero, then run forever */
3383 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
3384 if (atomic_read(&(pkt_dev->skb->users)) != 1) {
3385 idle_start = getCurUs();
3386 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3387 if (signal_pending(current)) {
3388 break;
3389 }
3390 schedule();
3391 }
3392 pkt_dev->idle_acc += getCurUs() - idle_start;
3393 }
222f1806 3394
1da177e4
LT		 3395 /* Done with this */
3396 pktgen_stop_device(pkt_dev);
95ed63f7
AK		 3397 if (pkt_dev->skb)
3398 kfree_skb(pkt_dev->skb);
3399 pkt_dev->skb = NULL;
222f1806
LC		 3400 }
3401out:;
3402}
1da177e4 3403
4ec93edb 3404/*
1da177e4
LT		 3405 * Main loop of the thread goes here
3406 */
3407
ee74baa7 3408static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3409{
3410 DEFINE_WAIT(wait);
ee74baa7 3411 struct pktgen_thread *t = arg;
222f1806 3412 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3413 int cpu = t->cpu;
1da177e4 3414
ee74baa7 3415 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3416
3417 init_waitqueue_head(&t->queue);
d3ede327 3418 complete(&t->start_done);
1da177e4 3419
ba25f9dc 3420 pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3421
ee74baa7 3422 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3423
83144186
RW		 3424 set_freezable();
3425
ee74baa7
DM		 3426 while (!kthread_should_stop()) {
3427 pkt_dev = next_to_run(t);
1da177e4 3428
ee74baa7
DM		 3429 if (!pkt_dev &&
3430 (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
3431 == 0) {
3432 prepare_to_wait(&(t->queue), &wait,
3433 TASK_INTERRUPTIBLE);
3434 schedule_timeout(HZ / 10);
3435 finish_wait(&(t->queue), &wait);
3436 }
1da177e4 3437
ee74baa7 3438 __set_current_state(TASK_RUNNING);
222f1806 3439
b163911f 3440 if (pkt_dev)
1da177e4
LT		 3441 pktgen_xmit(pkt_dev);
3442
222f1806 3443 if (t->control & T_STOP) {
1da177e4
LT		 3444 pktgen_stop(t);
3445 t->control &= ~(T_STOP);
3446 }
3447
222f1806 3448 if (t->control & T_RUN) {
1da177e4
LT		 3449 pktgen_run(t);
3450 t->control &= ~(T_RUN);
3451 }
3452
222f1806 3453 if (t->control & T_REMDEVALL) {
1da177e4 3454 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3455 t->control &= ~(T_REMDEVALL);
3456 }
3457
222f1806 3458 if (t->control & T_REMDEV) {
95ed63f7 3459 pktgen_rem_one_if(t);
1da177e4
LT		 3460 t->control &= ~(T_REMDEV);
3461 }
3462
09fe3ef4
AM		 3463 try_to_freeze();
3464
ee74baa7 3465 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3466 }
1da177e4 3467
25c4e53a 3468 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3469 pktgen_stop(t);
1da177e4 3470
25c4e53a 3471 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3472 pktgen_rem_all_ifs(t);
1da177e4 3473
25c4e53a 3474 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3475 pktgen_rem_thread(t);
cdcdbe0b 3476
ee74baa7 3477 return 0;
1da177e4
LT		 3478}
3479
222f1806
LC		 3480static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3481 const char *ifname)
1da177e4 3482{
c26a8016 3483 struct pktgen_dev *p, *pkt_dev = NULL;
222f1806
LC		 3484 if_lock(t);
3485
c26a8016 3486 list_for_each_entry(p, &t->if_list, list)
39df232f 3487 if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
c26a8016 3488 pkt_dev = p;
222f1806
LC		 3489 break;
3490 }
222f1806
LC		 3491
3492 if_unlock(t);
25c4e53a 3493 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3494 return pkt_dev;
1da177e4
LT		 3495}
3496
4ec93edb
YH		 3497/*
3498 * Adds a dev at front of if_list.
1da177e4
LT		 3499 */
3500
222f1806
LC		 3501static int add_dev_to_thread(struct pktgen_thread *t,
3502 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3503{
3504 int rv = 0;
222f1806
LC		 3505
3506 if_lock(t);
3507
3508 if (pkt_dev->pg_thread) {
25a8b254
DM		 3509 printk(KERN_ERR "pktgen: ERROR: already assigned "
3510 "to a thread.\n");
222f1806
LC		 3511 rv = -EBUSY;
3512 goto out;
3513 }
c26a8016
LC		 3514
3515 list_add(&pkt_dev->list, &t->if_list);
222f1806 3516 pkt_dev->pg_thread = t;
1da177e4
LT		 3517 pkt_dev->running = 0;
3518
222f1806
LC		 3519out:
3520 if_unlock(t);
3521 return rv;
1da177e4
LT		 3522}
3523
3524/* Called under thread lock */
3525
222f1806 3526static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3527{
222f1806 3528 struct pktgen_dev *pkt_dev;
39df232f 3529 int err;
222f1806 3530
1da177e4
LT		 3531 /* We don't allow a device to be on several threads */
3532
d50a6b56
SH		 3533 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3534 if (pkt_dev) {
25a8b254 3535 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3536 return -EBUSY;
3537 }
d50a6b56
SH		 3538
3539 pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
3540 if (!pkt_dev)
3541 return -ENOMEM;
3542
222f1806 3543 pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56
SH		 3544 if (pkt_dev->flows == NULL) {
3545 kfree(pkt_dev);
3546 return -ENOMEM;
3547 }
222f1806 3548 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3549
95ed63f7 3550 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3551 pkt_dev->min_pkt_size = ETH_ZLEN;
3552 pkt_dev->max_pkt_size = ETH_ZLEN;
3553 pkt_dev->nfrags = 0;
3554 pkt_dev->clone_skb = pg_clone_skb_d;
3555 pkt_dev->delay_us = pg_delay_d / 1000;
3556 pkt_dev->delay_ns = pg_delay_d % 1000;
3557 pkt_dev->count = pg_count_d;
3558 pkt_dev->sofar = 0;
222f1806 3559 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3560 pkt_dev->udp_src_max = 9;
3561 pkt_dev->udp_dst_min = 9;
3562 pkt_dev->udp_dst_max = 9;
3563
34954ddc
FF		 3564 pkt_dev->vlan_p = 0;
3565 pkt_dev->vlan_cfi = 0;
3566 pkt_dev->vlan_id = 0xffff;
3567 pkt_dev->svlan_p = 0;
3568 pkt_dev->svlan_cfi = 0;
3569 pkt_dev->svlan_id = 0xffff;
3570
39df232f
SH		 3571 err = pktgen_setup_dev(pkt_dev, ifname);
3572 if (err)
3573 goto out1;
d50a6b56 3574
5efdccbc
DL		 3575 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3576 &pktgen_if_fops, pkt_dev);
39df232f 3577 if (!pkt_dev->entry) {
25a8b254 3578 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3579 PG_PROC_DIR, ifname);
39df232f
SH		 3580 err = -EINVAL;
3581 goto out2;
d50a6b56 3582 }
a553e4a6
JHS		 3583#ifdef CONFIG_XFRM
3584 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3585 pkt_dev->ipsproto = IPPROTO_ESP;
3586#endif
d50a6b56
SH		 3587
3588 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3589out2:
3590 dev_put(pkt_dev->odev);
3591out1:
a553e4a6
JHS		 3592#ifdef CONFIG_XFRM
3593 free_SAs(pkt_dev);
3594#endif
39df232f
SH		 3595 if (pkt_dev->flows)
3596 vfree(pkt_dev->flows);
3597 kfree(pkt_dev);
3598 return err;
1da177e4
LT		 3599}
3600
ee74baa7 3601static int __init pktgen_create_thread(int cpu)
1da177e4 3602{
cdcdbe0b 3603 struct pktgen_thread *t;
d50a6b56 3604 struct proc_dir_entry *pe;
ee74baa7 3605 struct task_struct *p;
222f1806
LC		 3606
3607 t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
3608 if (!t) {
25a8b254
DM		 3609 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3610 "create new thread.\n");
222f1806
LC		 3611 return -ENOMEM;
3612 }
3613
222f1806 3614 spin_lock_init(&t->if_lock);
1da177e4 3615 t->cpu = cpu;
222f1806 3616
ee74baa7
DM		 3617 INIT_LIST_HEAD(&t->if_list);
3618
3619 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3620 init_completion(&t->start_done);
ee74baa7
DM		 3621
3622 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3623 if (IS_ERR(p)) {
25a8b254
DM		 3624 printk(KERN_ERR "pktgen: kernel_thread() failed "
3625 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3626 list_del(&t->th_list);
3627 kfree(t);
3628 return PTR_ERR(p);
3629 }
3630 kthread_bind(p, cpu);
3631 t->tsk = p;
3632
5efdccbc
DL		 3633 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3634 &pktgen_thread_fops, t);
222f1806 3635 if (!pe) {
25a8b254 3636 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3637 PG_PROC_DIR, t->tsk->comm);
3638 kthread_stop(p);
3639 list_del(&t->th_list);
222f1806
LC		 3640 kfree(t);
3641 return -EINVAL;
3642 }
d50a6b56 3643
ee74baa7 3644 wake_up_process(p);
d3ede327 3645 wait_for_completion(&t->start_done);
1da177e4
LT		 3646
3647 return 0;
3648}
3649
4ec93edb
YH		 3650/*
3651 * Removes a device from the thread if_list.
1da177e4 3652 */
222f1806
LC		 3653static void _rem_dev_from_if_list(struct pktgen_thread *t,
3654 struct pktgen_dev *pkt_dev)
1da177e4 3655{
c26a8016
LC		 3656 struct list_head *q, *n;
3657 struct pktgen_dev *p;
1da177e4 3658
c26a8016
LC		 3659 list_for_each_safe(q, n, &t->if_list) {
3660 p = list_entry(q, struct pktgen_dev, list);
3661 if (p == pkt_dev)
3662 list_del(&p->list);
1da177e4
LT		 3663 }
3664}
3665
222f1806
LC		 3666static int pktgen_remove_device(struct pktgen_thread *t,
3667 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3668{
3669
25c4e53a 3670 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3671
222f1806 3672 if (pkt_dev->running) {
25a8b254
DM		 3673 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3674 "running interface, stopping it now.\n");
222f1806
LC		 3675 pktgen_stop_device(pkt_dev);
3676 }
3677
3678 /* Dis-associate from the interface */
1da177e4
LT		 3679
3680 if (pkt_dev->odev) {
3681 dev_put(pkt_dev->odev);
222f1806
LC		 3682 pkt_dev->odev = NULL;
3683 }
3684
1da177e4
LT		 3685 /* And update the thread if_list */
3686
3687 _rem_dev_from_if_list(t, pkt_dev);
3688
39df232f
SH		 3689 if (pkt_dev->entry)
3690 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3691
a553e4a6
JHS		 3692#ifdef CONFIG_XFRM
3693 free_SAs(pkt_dev);
3694#endif
1da177e4
LT		 3695 if (pkt_dev->flows)
3696 vfree(pkt_dev->flows);
3697 kfree(pkt_dev);
222f1806 3698 return 0;
1da177e4
LT		 3699}
3700
222f1806 3701static int __init pg_init(void)
1da177e4
LT		 3702{
3703 int cpu;
d50a6b56 3704 struct proc_dir_entry *pe;
1da177e4 3705
25a8b254 3706 printk(KERN_INFO "%s", version);
1da177e4 3707
457c4cbc 3708 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3709 if (!pg_proc_dir)
3710 return -ENODEV;
3711 pg_proc_dir->owner = THIS_MODULE;
1da177e4 3712
25296d59 3713 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3714 if (pe == NULL) {
25a8b254
DM		 3715 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3716 "procfs entry.\n", PGCTRL);
457c4cbc 3717 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3718 return -EINVAL;
3719 }
1da177e4 3720
1da177e4
LT		 3721 /* Register us to receive netdevice events */
3722 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3723
670c02c2 3724 for_each_online_cpu(cpu) {
8024bb24 3725 int err;
1da177e4 3726
ee74baa7 3727 err = pktgen_create_thread(cpu);
8024bb24 3728 if (err)
25a8b254
DM		 3729 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3730 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3731 }
8024bb24
LC		 3732
3733 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3734 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3735 "all threads\n");
8024bb24
LC		 3736 unregister_netdevice_notifier(&pktgen_notifier_block);
3737 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3738 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3739 return -ENODEV;
3740 }
3741
222f1806 3742 return 0;
1da177e4
LT		 3743}
3744
3745static void __exit pg_cleanup(void)
3746{
cdcdbe0b
LC		 3747 struct pktgen_thread *t;
3748 struct list_head *q, *n;
1da177e4
LT		 3749 wait_queue_head_t queue;
3750 init_waitqueue_head(&queue);
3751
222f1806 3752 /* Stop all interfaces & threads */
1da177e4 3753
cdcdbe0b
LC		 3754 list_for_each_safe(q, n, &pktgen_threads) {
3755 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3756 kthread_stop(t->tsk);
3757 kfree(t);
222f1806 3758 }
1da177e4 3759
222f1806 3760 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3761 unregister_netdevice_notifier(&pktgen_notifier_block);
3762
222f1806 3763 /* Clean up proc file system */
d50a6b56 3764 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3765 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3766}
3767
1da177e4
LT		 3768module_init(pg_init);
3769module_exit(pg_cleanup);
3770
3771MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
3772MODULE_DESCRIPTION("Packet Generator tool");
3773MODULE_LICENSE("GPL");
3774module_param(pg_count_d, int, 0);
3775module_param(pg_delay_d, int, 0);
3776module_param(pg_clone_skb_d, int, 0);
3777module_param(debug, int, 0);
Clone of davem's net-next-2.6 tree