3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
9 * Jens Låås <jens.laas@data.slu.se>
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.
17 * A tool for loading the network with preconfigurated packets.
18 * The tool is implemented as a linux module. Parameters are output
19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
23 * Additional hacking by:
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>
47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
49 * as a "fastpath" with a configurable number of clones after alloc's.
50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
54 * Also moved to /proc/net/pktgen/
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>
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
72 * way. The if_lock should be possible to remove when add/rem_device is merged
75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
77 * to /proc gives result code thats should be read be the "writer".
78 * For practical use this should be no problem.
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.
84 * Fix refcount off by one if first packet fails, potential null deref,
87 * First "ranges" functionality for ipv6 030726 --ro
89 * Included flow support. 030802 ANK.
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
97 * <shemminger@osdl.org> 040923
99 * Randy Dunlap fixed u64 printk compiler waring
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
118 #include <linux/sys.h>
119 #include <linux/types.h>
120 #include <linux/module.h>
121 #include <linux/moduleparam.h>
122 #include <linux/kernel.h>
123 #include <linux/mutex.h>
124 #include <linux/sched.h>
125 #include <linux/slab.h>
126 #include <linux/vmalloc.h>
127 #include <linux/unistd.h>
128 #include <linux/string.h>
129 #include <linux/ptrace.h>
130 #include <linux/errno.h>
131 #include <linux/ioport.h>
132 #include <linux/interrupt.h>
133 #include <linux/capability.h>
134 #include <linux/freezer.h>
135 #include <linux/delay.h>
136 #include <linux/timer.h>
137 #include <linux/list.h>
138 #include <linux/init.h>
139 #include <linux/skbuff.h>
140 #include <linux/netdevice.h>
141 #include <linux/inet.h>
142 #include <linux/inetdevice.h>
143 #include <linux/rtnetlink.h>
144 #include <linux/if_arp.h>
145 #include <linux/if_vlan.h>
146 #include <linux/in.h>
147 #include <linux/ip.h>
148 #include <linux/ipv6.h>
149 #include <linux/udp.h>
150 #include <linux/proc_fs.h>
151 #include <linux/seq_file.h>
152 #include <linux/wait.h>
153 #include <linux/etherdevice.h>
154 #include <linux/kthread.h>
155 #include <net/net_namespace.h>
156 #include <net/checksum.h>
157 #include <net/ipv6.h>
158 #include <net/addrconf.h>
160 #include <net/xfrm.h>
162 #include <asm/byteorder.h>
163 #include <linux/rcupdate.h>
164 #include <linux/bitops.h>
167 #include <asm/uaccess.h>
168 #include <asm/div64.h> /* do_div */
169 #include <asm/timex.h>
171 #define VERSION "pktgen v2.70: Packet Generator for packet performance testing.\n"
173 #define IP_NAME_SZ 32
174 #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
175 #define MPLS_STACK_BOTTOM htonl(0x00000100)
177 /* Device flag bits */
178 #define F_IPSRC_RND (1<<0) /* IP-Src Random */
179 #define F_IPDST_RND (1<<1) /* IP-Dst Random */
180 #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
181 #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
182 #define F_MACSRC_RND (1<<4) /* MAC-Src Random */
183 #define F_MACDST_RND (1<<5) /* MAC-Dst Random */
184 #define F_TXSIZE_RND (1<<6) /* Transmit size is random */
185 #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
186 #define F_MPLS_RND (1<<8) /* Random MPLS labels */
187 #define F_VID_RND (1<<9) /* Random VLAN ID */
188 #define F_SVID_RND (1<<10) /* Random SVLAN ID */
189 #define F_FLOW_SEQ (1<<11) /* Sequential flows */
190 #define F_IPSEC_ON (1<<12) /* ipsec on for flows */
191 #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
192 #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
194 /* Thread control flag bits */
195 #define T_TERMINATE (1<<0)
196 #define T_STOP (1<<1) /* Stop run */
197 #define T_RUN (1<<2) /* Start run */
198 #define T_REMDEVALL (1<<3) /* Remove all devs */
199 #define T_REMDEV (1<<4) /* Remove one dev */
201 /* If lock -- can be removed after some work */
202 #define if_lock(t) spin_lock(&(t->if_lock));
203 #define if_unlock(t) spin_unlock(&(t->if_lock));
205 /* Used to help with determining the pkts on receive */
206 #define PKTGEN_MAGIC 0xbe9be955
207 #define PG_PROC_DIR "pktgen"
208 #define PGCTRL "pgctrl"
209 static struct proc_dir_entry
*pg_proc_dir
= NULL
;
211 #define MAX_CFLOWS 65536
213 #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
214 #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
220 struct xfrm_state
*x
;
226 #define F_INIT (1<<0) /* flow has been initialized */
230 * Try to keep frequent/infrequent used vars. separated.
232 struct proc_dir_entry
*entry
; /* proc file */
233 struct pktgen_thread
*pg_thread
;/* the owner */
234 struct list_head list
; /* Used for chaining in the thread's run-queue */
236 int running
; /* if this changes to false, the test will stop */
238 /* If min != max, then we will either do a linear iteration, or
239 * we will do a random selection from within the range.
242 int removal_mark
; /* non-zero => the device is marked for
243 * removal by worker thread */
245 int min_pkt_size
; /* = ETH_ZLEN; */
246 int max_pkt_size
; /* = ETH_ZLEN; */
247 int pkt_overhead
; /* overhead for MPLS, VLANs, IPSEC etc */
249 __u32 delay_us
; /* Default delay */
251 __u64 count
; /* Default No packets to send */
252 __u64 sofar
; /* How many pkts we've sent so far */
253 __u64 tx_bytes
; /* How many bytes we've transmitted */
254 __u64 errors
; /* Errors when trying to transmit, pkts will be re-sent */
256 /* runtime counters relating to clone_skb */
257 __u64 next_tx_us
; /* timestamp of when to tx next */
260 __u64 allocated_skbs
;
262 int last_ok
; /* Was last skb sent?
263 * Or a failed transmit of some sort? This will keep
264 * sequence numbers in order, for example.
266 __u64 started_at
; /* micro-seconds */
267 __u64 stopped_at
; /* micro-seconds */
268 __u64 idle_acc
; /* micro-seconds */
271 int clone_skb
; /* Use multiple SKBs during packet gen. If this number
272 * is greater than 1, then that many copies of the same
273 * packet will be sent before a new packet is allocated.
274 * For instance, if you want to send 1024 identical packets
275 * before creating a new packet, set clone_skb to 1024.
278 char dst_min
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
279 char dst_max
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
280 char src_min
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
281 char src_max
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
283 struct in6_addr in6_saddr
;
284 struct in6_addr in6_daddr
;
285 struct in6_addr cur_in6_daddr
;
286 struct in6_addr cur_in6_saddr
;
288 struct in6_addr min_in6_daddr
;
289 struct in6_addr max_in6_daddr
;
290 struct in6_addr min_in6_saddr
;
291 struct in6_addr max_in6_saddr
;
293 /* If we're doing ranges, random or incremental, then this
294 * defines the min/max for those ranges.
296 __be32 saddr_min
; /* inclusive, source IP address */
297 __be32 saddr_max
; /* exclusive, source IP address */
298 __be32 daddr_min
; /* inclusive, dest IP address */
299 __be32 daddr_max
; /* exclusive, dest IP address */
301 __u16 udp_src_min
; /* inclusive, source UDP port */
302 __u16 udp_src_max
; /* exclusive, source UDP port */
303 __u16 udp_dst_min
; /* inclusive, dest UDP port */
304 __u16 udp_dst_max
; /* exclusive, dest UDP port */
307 __u8 tos
; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */
308 __u8 traffic_class
; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */
311 unsigned nr_labels
; /* Depth of stack, 0 = no MPLS */
312 __be32 labels
[MAX_MPLS_LABELS
];
314 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
317 __u16 vlan_id
; /* 0xffff means no vlan tag */
321 __u16 svlan_id
; /* 0xffff means no svlan tag */
323 __u32 src_mac_count
; /* How many MACs to iterate through */
324 __u32 dst_mac_count
; /* How many MACs to iterate through */
326 unsigned char dst_mac
[ETH_ALEN
];
327 unsigned char src_mac
[ETH_ALEN
];
329 __u32 cur_dst_mac_offset
;
330 __u32 cur_src_mac_offset
;
340 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
342 We fill in SRC address later
343 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
347 __u16 pad
; /* pad out the hh struct to an even 16 bytes */
349 struct sk_buff
*skb
; /* skb we are to transmit next, mainly used for when we
350 * are transmitting the same one multiple times
352 struct net_device
*odev
; /* The out-going device. Note that the device should
353 * have it's pg_info pointer pointing back to this
354 * device. This will be set when the user specifies
355 * the out-going device name (not when the inject is
356 * started as it used to do.)
358 struct flow_state
*flows
;
359 unsigned cflows
; /* Concurrent flows (config) */
360 unsigned lflow
; /* Flow length (config) */
361 unsigned nflows
; /* accumulated flows (stats) */
362 unsigned curfl
; /* current sequenced flow (state)*/
368 __u8 ipsmode
; /* IPSEC mode (config) */
369 __u8 ipsproto
; /* IPSEC type (config) */
381 struct pktgen_thread
{
383 struct list_head if_list
; /* All device here */
384 struct list_head th_list
;
385 struct task_struct
*tsk
;
388 /* Field for thread to receive "posted" events terminate, stop ifs etc. */
393 wait_queue_head_t queue
;
394 struct completion start_done
;
400 /** Convert to micro-seconds */
401 static inline __u64
tv_to_us(const struct timeval
*tv
)
403 __u64 us
= tv
->tv_usec
;
404 us
+= (__u64
) tv
->tv_sec
* (__u64
) 1000000;
408 static __u64
getCurUs(void)
411 do_gettimeofday(&tv
);
412 return tv_to_us(&tv
);
415 /* old include end */
417 static char version
[] __initdata
= VERSION
;
419 static int pktgen_remove_device(struct pktgen_thread
*t
, struct pktgen_dev
*i
);
420 static int pktgen_add_device(struct pktgen_thread
*t
, const char *ifname
);
421 static struct pktgen_dev
*pktgen_find_dev(struct pktgen_thread
*t
,
423 static int pktgen_device_event(struct notifier_block
*, unsigned long, void *);
424 static void pktgen_run_all_threads(void);
425 static void pktgen_stop_all_threads_ifs(void);
426 static int pktgen_stop_device(struct pktgen_dev
*pkt_dev
);
427 static void pktgen_stop(struct pktgen_thread
*t
);
428 static void pktgen_clear_counters(struct pktgen_dev
*pkt_dev
);
430 static unsigned int scan_ip6(const char *s
, char ip
[16]);
431 static unsigned int fmt_ip6(char *s
, const char ip
[16]);
433 /* Module parameters, defaults. */
434 static int pg_count_d
= 1000; /* 1000 pkts by default */
435 static int pg_delay_d
;
436 static int pg_clone_skb_d
;
439 static DEFINE_MUTEX(pktgen_thread_lock
);
440 static LIST_HEAD(pktgen_threads
);
442 static struct notifier_block pktgen_notifier_block
= {
443 .notifier_call
= pktgen_device_event
,
447 * /proc handling functions
451 static int pgctrl_show(struct seq_file
*seq
, void *v
)
453 seq_puts(seq
, VERSION
);
457 static ssize_t
pgctrl_write(struct file
*file
, const char __user
* buf
,
458 size_t count
, loff_t
* ppos
)
463 if (!capable(CAP_NET_ADMIN
)) {
468 if (count
> sizeof(data
))
469 count
= sizeof(data
);
471 if (copy_from_user(data
, buf
, count
)) {
475 data
[count
- 1] = 0; /* Make string */
477 if (!strcmp(data
, "stop"))
478 pktgen_stop_all_threads_ifs();
480 else if (!strcmp(data
, "start"))
481 pktgen_run_all_threads();
484 printk(KERN_WARNING
"pktgen: Unknown command: %s\n", data
);
492 static int pgctrl_open(struct inode
*inode
, struct file
*file
)
494 return single_open(file
, pgctrl_show
, PDE(inode
)->data
);
497 static const struct file_operations pktgen_fops
= {
498 .owner
= THIS_MODULE
,
502 .write
= pgctrl_write
,
503 .release
= single_release
,
506 static int pktgen_if_show(struct seq_file
*seq
, void *v
)
508 struct pktgen_dev
*pkt_dev
= seq
->private;
511 __u64 now
= getCurUs();
512 DECLARE_MAC_BUF(mac
);
515 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
516 (unsigned long long)pkt_dev
->count
, pkt_dev
->min_pkt_size
,
517 pkt_dev
->max_pkt_size
);
520 " frags: %d delay: %u clone_skb: %d ifname: %s\n",
522 1000 * pkt_dev
->delay_us
+ pkt_dev
->delay_ns
,
523 pkt_dev
->clone_skb
, pkt_dev
->odev
->name
);
525 seq_printf(seq
, " flows: %u flowlen: %u\n", pkt_dev
->cflows
,
529 " queue_map_min: %u queue_map_max: %u\n",
530 pkt_dev
->queue_map_min
,
531 pkt_dev
->queue_map_max
);
533 if (pkt_dev
->flags
& F_IPV6
) {
534 char b1
[128], b2
[128], b3
[128];
535 fmt_ip6(b1
, pkt_dev
->in6_saddr
.s6_addr
);
536 fmt_ip6(b2
, pkt_dev
->min_in6_saddr
.s6_addr
);
537 fmt_ip6(b3
, pkt_dev
->max_in6_saddr
.s6_addr
);
539 " saddr: %s min_saddr: %s max_saddr: %s\n", b1
,
542 fmt_ip6(b1
, pkt_dev
->in6_daddr
.s6_addr
);
543 fmt_ip6(b2
, pkt_dev
->min_in6_daddr
.s6_addr
);
544 fmt_ip6(b3
, pkt_dev
->max_in6_daddr
.s6_addr
);
546 " daddr: %s min_daddr: %s max_daddr: %s\n", b1
,
551 " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n",
552 pkt_dev
->dst_min
, pkt_dev
->dst_max
, pkt_dev
->src_min
,
555 seq_puts(seq
, " src_mac: ");
557 seq_printf(seq
, "%s ",
558 print_mac(mac
, is_zero_ether_addr(pkt_dev
->src_mac
) ?
559 pkt_dev
->odev
->dev_addr
: pkt_dev
->src_mac
));
561 seq_printf(seq
, "dst_mac: ");
562 seq_printf(seq
, "%s\n", print_mac(mac
, pkt_dev
->dst_mac
));
565 " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
566 pkt_dev
->udp_src_min
, pkt_dev
->udp_src_max
,
567 pkt_dev
->udp_dst_min
, pkt_dev
->udp_dst_max
);
570 " src_mac_count: %d dst_mac_count: %d\n",
571 pkt_dev
->src_mac_count
, pkt_dev
->dst_mac_count
);
573 if (pkt_dev
->nr_labels
) {
575 seq_printf(seq
, " mpls: ");
576 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
577 seq_printf(seq
, "%08x%s", ntohl(pkt_dev
->labels
[i
]),
578 i
== pkt_dev
->nr_labels
-1 ? "\n" : ", ");
581 if (pkt_dev
->vlan_id
!= 0xffff) {
582 seq_printf(seq
, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
583 pkt_dev
->vlan_id
, pkt_dev
->vlan_p
, pkt_dev
->vlan_cfi
);
586 if (pkt_dev
->svlan_id
!= 0xffff) {
587 seq_printf(seq
, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
588 pkt_dev
->svlan_id
, pkt_dev
->svlan_p
, pkt_dev
->svlan_cfi
);
592 seq_printf(seq
, " tos: 0x%02x\n", pkt_dev
->tos
);
595 if (pkt_dev
->traffic_class
) {
596 seq_printf(seq
, " traffic_class: 0x%02x\n", pkt_dev
->traffic_class
);
599 seq_printf(seq
, " Flags: ");
601 if (pkt_dev
->flags
& F_IPV6
)
602 seq_printf(seq
, "IPV6 ");
604 if (pkt_dev
->flags
& F_IPSRC_RND
)
605 seq_printf(seq
, "IPSRC_RND ");
607 if (pkt_dev
->flags
& F_IPDST_RND
)
608 seq_printf(seq
, "IPDST_RND ");
610 if (pkt_dev
->flags
& F_TXSIZE_RND
)
611 seq_printf(seq
, "TXSIZE_RND ");
613 if (pkt_dev
->flags
& F_UDPSRC_RND
)
614 seq_printf(seq
, "UDPSRC_RND ");
616 if (pkt_dev
->flags
& F_UDPDST_RND
)
617 seq_printf(seq
, "UDPDST_RND ");
619 if (pkt_dev
->flags
& F_MPLS_RND
)
620 seq_printf(seq
, "MPLS_RND ");
622 if (pkt_dev
->flags
& F_QUEUE_MAP_RND
)
623 seq_printf(seq
, "QUEUE_MAP_RND ");
625 if (pkt_dev
->flags
& F_QUEUE_MAP_CPU
)
626 seq_printf(seq
, "QUEUE_MAP_CPU ");
628 if (pkt_dev
->cflows
) {
629 if (pkt_dev
->flags
& F_FLOW_SEQ
)
630 seq_printf(seq
, "FLOW_SEQ "); /*in sequence flows*/
632 seq_printf(seq
, "FLOW_RND ");
636 if (pkt_dev
->flags
& F_IPSEC_ON
)
637 seq_printf(seq
, "IPSEC ");
640 if (pkt_dev
->flags
& F_MACSRC_RND
)
641 seq_printf(seq
, "MACSRC_RND ");
643 if (pkt_dev
->flags
& F_MACDST_RND
)
644 seq_printf(seq
, "MACDST_RND ");
646 if (pkt_dev
->flags
& F_VID_RND
)
647 seq_printf(seq
, "VID_RND ");
649 if (pkt_dev
->flags
& F_SVID_RND
)
650 seq_printf(seq
, "SVID_RND ");
654 sa
= pkt_dev
->started_at
;
655 stopped
= pkt_dev
->stopped_at
;
656 if (pkt_dev
->running
)
657 stopped
= now
; /* not really stopped, more like last-running-at */
660 "Current:\n pkts-sofar: %llu errors: %llu\n started: %lluus stopped: %lluus idle: %lluus\n",
661 (unsigned long long)pkt_dev
->sofar
,
662 (unsigned long long)pkt_dev
->errors
, (unsigned long long)sa
,
663 (unsigned long long)stopped
,
664 (unsigned long long)pkt_dev
->idle_acc
);
667 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
668 pkt_dev
->seq_num
, pkt_dev
->cur_dst_mac_offset
,
669 pkt_dev
->cur_src_mac_offset
);
671 if (pkt_dev
->flags
& F_IPV6
) {
672 char b1
[128], b2
[128];
673 fmt_ip6(b1
, pkt_dev
->cur_in6_daddr
.s6_addr
);
674 fmt_ip6(b2
, pkt_dev
->cur_in6_saddr
.s6_addr
);
675 seq_printf(seq
, " cur_saddr: %s cur_daddr: %s\n", b2
, b1
);
677 seq_printf(seq
, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
678 pkt_dev
->cur_saddr
, pkt_dev
->cur_daddr
);
680 seq_printf(seq
, " cur_udp_dst: %d cur_udp_src: %d\n",
681 pkt_dev
->cur_udp_dst
, pkt_dev
->cur_udp_src
);
683 seq_printf(seq
, " cur_queue_map: %u\n", pkt_dev
->cur_queue_map
);
685 seq_printf(seq
, " flows: %u\n", pkt_dev
->nflows
);
687 if (pkt_dev
->result
[0])
688 seq_printf(seq
, "Result: %s\n", pkt_dev
->result
);
690 seq_printf(seq
, "Result: Idle\n");
696 static int hex32_arg(const char __user
*user_buffer
, unsigned long maxlen
, __u32
*num
)
701 for (; i
< maxlen
; i
++) {
704 if (get_user(c
, &user_buffer
[i
]))
706 if ((c
>= '0') && (c
<= '9'))
708 else if ((c
>= 'a') && (c
<= 'f'))
709 *num
|= c
- 'a' + 10;
710 else if ((c
>= 'A') && (c
<= 'F'))
711 *num
|= c
- 'A' + 10;
718 static int count_trail_chars(const char __user
* user_buffer
,
723 for (i
= 0; i
< maxlen
; i
++) {
725 if (get_user(c
, &user_buffer
[i
]))
743 static unsigned long num_arg(const char __user
* user_buffer
,
744 unsigned long maxlen
, unsigned long *num
)
749 for (; i
< maxlen
; i
++) {
751 if (get_user(c
, &user_buffer
[i
]))
753 if ((c
>= '0') && (c
<= '9')) {
762 static int strn_len(const char __user
* user_buffer
, unsigned int maxlen
)
766 for (; i
< maxlen
; i
++) {
768 if (get_user(c
, &user_buffer
[i
]))
786 static ssize_t
get_labels(const char __user
*buffer
, struct pktgen_dev
*pkt_dev
)
793 pkt_dev
->nr_labels
= 0;
796 len
= hex32_arg(&buffer
[i
], 8, &tmp
);
799 pkt_dev
->labels
[n
] = htonl(tmp
);
800 if (pkt_dev
->labels
[n
] & MPLS_STACK_BOTTOM
)
801 pkt_dev
->flags
|= F_MPLS_RND
;
803 if (get_user(c
, &buffer
[i
]))
807 if (n
>= MAX_MPLS_LABELS
)
811 pkt_dev
->nr_labels
= n
;
815 static ssize_t
pktgen_if_write(struct file
*file
,
816 const char __user
* user_buffer
, size_t count
,
819 struct seq_file
*seq
= (struct seq_file
*)file
->private_data
;
820 struct pktgen_dev
*pkt_dev
= seq
->private;
822 char name
[16], valstr
[32];
823 unsigned long value
= 0;
824 char *pg_result
= NULL
;
828 pg_result
= &(pkt_dev
->result
[0]);
831 printk(KERN_WARNING
"pktgen: wrong command format\n");
836 tmp
= count_trail_chars(&user_buffer
[i
], max
);
838 printk(KERN_WARNING
"pktgen: illegal format\n");
843 /* Read variable name */
845 len
= strn_len(&user_buffer
[i
], sizeof(name
) - 1);
849 memset(name
, 0, sizeof(name
));
850 if (copy_from_user(name
, &user_buffer
[i
], len
))
855 len
= count_trail_chars(&user_buffer
[i
], max
);
863 if (copy_from_user(tb
, user_buffer
, count
))
866 printk(KERN_DEBUG
"pktgen: %s,%lu buffer -:%s:-\n", name
,
867 (unsigned long)count
, tb
);
870 if (!strcmp(name
, "min_pkt_size")) {
871 len
= num_arg(&user_buffer
[i
], 10, &value
);
876 if (value
< 14 + 20 + 8)
878 if (value
!= pkt_dev
->min_pkt_size
) {
879 pkt_dev
->min_pkt_size
= value
;
880 pkt_dev
->cur_pkt_size
= value
;
882 sprintf(pg_result
, "OK: min_pkt_size=%u",
883 pkt_dev
->min_pkt_size
);
887 if (!strcmp(name
, "max_pkt_size")) {
888 len
= num_arg(&user_buffer
[i
], 10, &value
);
893 if (value
< 14 + 20 + 8)
895 if (value
!= pkt_dev
->max_pkt_size
) {
896 pkt_dev
->max_pkt_size
= value
;
897 pkt_dev
->cur_pkt_size
= value
;
899 sprintf(pg_result
, "OK: max_pkt_size=%u",
900 pkt_dev
->max_pkt_size
);
904 /* Shortcut for min = max */
906 if (!strcmp(name
, "pkt_size")) {
907 len
= num_arg(&user_buffer
[i
], 10, &value
);
912 if (value
< 14 + 20 + 8)
914 if (value
!= pkt_dev
->min_pkt_size
) {
915 pkt_dev
->min_pkt_size
= value
;
916 pkt_dev
->max_pkt_size
= value
;
917 pkt_dev
->cur_pkt_size
= value
;
919 sprintf(pg_result
, "OK: pkt_size=%u", pkt_dev
->min_pkt_size
);
923 if (!strcmp(name
, "debug")) {
924 len
= num_arg(&user_buffer
[i
], 10, &value
);
930 sprintf(pg_result
, "OK: debug=%u", debug
);
934 if (!strcmp(name
, "frags")) {
935 len
= num_arg(&user_buffer
[i
], 10, &value
);
940 pkt_dev
->nfrags
= value
;
941 sprintf(pg_result
, "OK: frags=%u", pkt_dev
->nfrags
);
944 if (!strcmp(name
, "delay")) {
945 len
= num_arg(&user_buffer
[i
], 10, &value
);
950 if (value
== 0x7FFFFFFF) {
951 pkt_dev
->delay_us
= 0x7FFFFFFF;
952 pkt_dev
->delay_ns
= 0;
954 pkt_dev
->delay_us
= value
/ 1000;
955 pkt_dev
->delay_ns
= value
% 1000;
957 sprintf(pg_result
, "OK: delay=%u",
958 1000 * pkt_dev
->delay_us
+ pkt_dev
->delay_ns
);
961 if (!strcmp(name
, "udp_src_min")) {
962 len
= num_arg(&user_buffer
[i
], 10, &value
);
967 if (value
!= pkt_dev
->udp_src_min
) {
968 pkt_dev
->udp_src_min
= value
;
969 pkt_dev
->cur_udp_src
= value
;
971 sprintf(pg_result
, "OK: udp_src_min=%u", pkt_dev
->udp_src_min
);
974 if (!strcmp(name
, "udp_dst_min")) {
975 len
= num_arg(&user_buffer
[i
], 10, &value
);
980 if (value
!= pkt_dev
->udp_dst_min
) {
981 pkt_dev
->udp_dst_min
= value
;
982 pkt_dev
->cur_udp_dst
= value
;
984 sprintf(pg_result
, "OK: udp_dst_min=%u", pkt_dev
->udp_dst_min
);
987 if (!strcmp(name
, "udp_src_max")) {
988 len
= num_arg(&user_buffer
[i
], 10, &value
);
993 if (value
!= pkt_dev
->udp_src_max
) {
994 pkt_dev
->udp_src_max
= value
;
995 pkt_dev
->cur_udp_src
= value
;
997 sprintf(pg_result
, "OK: udp_src_max=%u", pkt_dev
->udp_src_max
);
1000 if (!strcmp(name
, "udp_dst_max")) {
1001 len
= num_arg(&user_buffer
[i
], 10, &value
);
1006 if (value
!= pkt_dev
->udp_dst_max
) {
1007 pkt_dev
->udp_dst_max
= value
;
1008 pkt_dev
->cur_udp_dst
= value
;
1010 sprintf(pg_result
, "OK: udp_dst_max=%u", pkt_dev
->udp_dst_max
);
1013 if (!strcmp(name
, "clone_skb")) {
1014 len
= num_arg(&user_buffer
[i
], 10, &value
);
1019 pkt_dev
->clone_skb
= value
;
1021 sprintf(pg_result
, "OK: clone_skb=%d", pkt_dev
->clone_skb
);
1024 if (!strcmp(name
, "count")) {
1025 len
= num_arg(&user_buffer
[i
], 10, &value
);
1030 pkt_dev
->count
= value
;
1031 sprintf(pg_result
, "OK: count=%llu",
1032 (unsigned long long)pkt_dev
->count
);
1035 if (!strcmp(name
, "src_mac_count")) {
1036 len
= num_arg(&user_buffer
[i
], 10, &value
);
1041 if (pkt_dev
->src_mac_count
!= value
) {
1042 pkt_dev
->src_mac_count
= value
;
1043 pkt_dev
->cur_src_mac_offset
= 0;
1045 sprintf(pg_result
, "OK: src_mac_count=%d",
1046 pkt_dev
->src_mac_count
);
1049 if (!strcmp(name
, "dst_mac_count")) {
1050 len
= num_arg(&user_buffer
[i
], 10, &value
);
1055 if (pkt_dev
->dst_mac_count
!= value
) {
1056 pkt_dev
->dst_mac_count
= value
;
1057 pkt_dev
->cur_dst_mac_offset
= 0;
1059 sprintf(pg_result
, "OK: dst_mac_count=%d",
1060 pkt_dev
->dst_mac_count
);
1063 if (!strcmp(name
, "flag")) {
1066 len
= strn_len(&user_buffer
[i
], sizeof(f
) - 1);
1070 if (copy_from_user(f
, &user_buffer
[i
], len
))
1073 if (strcmp(f
, "IPSRC_RND") == 0)
1074 pkt_dev
->flags
|= F_IPSRC_RND
;
1076 else if (strcmp(f
, "!IPSRC_RND") == 0)
1077 pkt_dev
->flags
&= ~F_IPSRC_RND
;
1079 else if (strcmp(f
, "TXSIZE_RND") == 0)
1080 pkt_dev
->flags
|= F_TXSIZE_RND
;
1082 else if (strcmp(f
, "!TXSIZE_RND") == 0)
1083 pkt_dev
->flags
&= ~F_TXSIZE_RND
;
1085 else if (strcmp(f
, "IPDST_RND") == 0)
1086 pkt_dev
->flags
|= F_IPDST_RND
;
1088 else if (strcmp(f
, "!IPDST_RND") == 0)
1089 pkt_dev
->flags
&= ~F_IPDST_RND
;
1091 else if (strcmp(f
, "UDPSRC_RND") == 0)
1092 pkt_dev
->flags
|= F_UDPSRC_RND
;
1094 else if (strcmp(f
, "!UDPSRC_RND") == 0)
1095 pkt_dev
->flags
&= ~F_UDPSRC_RND
;
1097 else if (strcmp(f
, "UDPDST_RND") == 0)
1098 pkt_dev
->flags
|= F_UDPDST_RND
;
1100 else if (strcmp(f
, "!UDPDST_RND") == 0)
1101 pkt_dev
->flags
&= ~F_UDPDST_RND
;
1103 else if (strcmp(f
, "MACSRC_RND") == 0)
1104 pkt_dev
->flags
|= F_MACSRC_RND
;
1106 else if (strcmp(f
, "!MACSRC_RND") == 0)
1107 pkt_dev
->flags
&= ~F_MACSRC_RND
;
1109 else if (strcmp(f
, "MACDST_RND") == 0)
1110 pkt_dev
->flags
|= F_MACDST_RND
;
1112 else if (strcmp(f
, "!MACDST_RND") == 0)
1113 pkt_dev
->flags
&= ~F_MACDST_RND
;
1115 else if (strcmp(f
, "MPLS_RND") == 0)
1116 pkt_dev
->flags
|= F_MPLS_RND
;
1118 else if (strcmp(f
, "!MPLS_RND") == 0)
1119 pkt_dev
->flags
&= ~F_MPLS_RND
;
1121 else if (strcmp(f
, "VID_RND") == 0)
1122 pkt_dev
->flags
|= F_VID_RND
;
1124 else if (strcmp(f
, "!VID_RND") == 0)
1125 pkt_dev
->flags
&= ~F_VID_RND
;
1127 else if (strcmp(f
, "SVID_RND") == 0)
1128 pkt_dev
->flags
|= F_SVID_RND
;
1130 else if (strcmp(f
, "!SVID_RND") == 0)
1131 pkt_dev
->flags
&= ~F_SVID_RND
;
1133 else if (strcmp(f
, "FLOW_SEQ") == 0)
1134 pkt_dev
->flags
|= F_FLOW_SEQ
;
1136 else if (strcmp(f
, "QUEUE_MAP_RND") == 0)
1137 pkt_dev
->flags
|= F_QUEUE_MAP_RND
;
1139 else if (strcmp(f
, "!QUEUE_MAP_RND") == 0)
1140 pkt_dev
->flags
&= ~F_QUEUE_MAP_RND
;
1142 else if (strcmp(f
, "QUEUE_MAP_CPU") == 0)
1143 pkt_dev
->flags
|= F_QUEUE_MAP_CPU
;
1145 else if (strcmp(f
, "!QUEUE_MAP_CPU") == 0)
1146 pkt_dev
->flags
&= ~F_QUEUE_MAP_CPU
;
1148 else if (strcmp(f
, "IPSEC") == 0)
1149 pkt_dev
->flags
|= F_IPSEC_ON
;
1152 else if (strcmp(f
, "!IPV6") == 0)
1153 pkt_dev
->flags
&= ~F_IPV6
;
1157 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1159 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
1160 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
1163 sprintf(pg_result
, "OK: flags=0x%x", pkt_dev
->flags
);
1166 if (!strcmp(name
, "dst_min") || !strcmp(name
, "dst")) {
1167 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->dst_min
) - 1);
1172 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1175 if (strcmp(buf
, pkt_dev
->dst_min
) != 0) {
1176 memset(pkt_dev
->dst_min
, 0, sizeof(pkt_dev
->dst_min
));
1177 strncpy(pkt_dev
->dst_min
, buf
, len
);
1178 pkt_dev
->daddr_min
= in_aton(pkt_dev
->dst_min
);
1179 pkt_dev
->cur_daddr
= pkt_dev
->daddr_min
;
1182 printk(KERN_DEBUG
"pktgen: dst_min set to: %s\n",
1185 sprintf(pg_result
, "OK: dst_min=%s", pkt_dev
->dst_min
);
1188 if (!strcmp(name
, "dst_max")) {
1189 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->dst_max
) - 1);
1194 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1198 if (strcmp(buf
, pkt_dev
->dst_max
) != 0) {
1199 memset(pkt_dev
->dst_max
, 0, sizeof(pkt_dev
->dst_max
));
1200 strncpy(pkt_dev
->dst_max
, buf
, len
);
1201 pkt_dev
->daddr_max
= in_aton(pkt_dev
->dst_max
);
1202 pkt_dev
->cur_daddr
= pkt_dev
->daddr_max
;
1205 printk(KERN_DEBUG
"pktgen: dst_max set to: %s\n",
1208 sprintf(pg_result
, "OK: dst_max=%s", pkt_dev
->dst_max
);
1211 if (!strcmp(name
, "dst6")) {
1212 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1216 pkt_dev
->flags
|= F_IPV6
;
1218 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1222 scan_ip6(buf
, pkt_dev
->in6_daddr
.s6_addr
);
1223 fmt_ip6(buf
, pkt_dev
->in6_daddr
.s6_addr
);
1225 ipv6_addr_copy(&pkt_dev
->cur_in6_daddr
, &pkt_dev
->in6_daddr
);
1228 printk(KERN_DEBUG
"pktgen: dst6 set to: %s\n", buf
);
1231 sprintf(pg_result
, "OK: dst6=%s", buf
);
1234 if (!strcmp(name
, "dst6_min")) {
1235 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1239 pkt_dev
->flags
|= F_IPV6
;
1241 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1245 scan_ip6(buf
, pkt_dev
->min_in6_daddr
.s6_addr
);
1246 fmt_ip6(buf
, pkt_dev
->min_in6_daddr
.s6_addr
);
1248 ipv6_addr_copy(&pkt_dev
->cur_in6_daddr
,
1249 &pkt_dev
->min_in6_daddr
);
1251 printk(KERN_DEBUG
"pktgen: dst6_min set to: %s\n", buf
);
1254 sprintf(pg_result
, "OK: dst6_min=%s", buf
);
1257 if (!strcmp(name
, "dst6_max")) {
1258 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1262 pkt_dev
->flags
|= F_IPV6
;
1264 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1268 scan_ip6(buf
, pkt_dev
->max_in6_daddr
.s6_addr
);
1269 fmt_ip6(buf
, pkt_dev
->max_in6_daddr
.s6_addr
);
1272 printk(KERN_DEBUG
"pktgen: dst6_max set to: %s\n", buf
);
1275 sprintf(pg_result
, "OK: dst6_max=%s", buf
);
1278 if (!strcmp(name
, "src6")) {
1279 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1283 pkt_dev
->flags
|= F_IPV6
;
1285 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1289 scan_ip6(buf
, pkt_dev
->in6_saddr
.s6_addr
);
1290 fmt_ip6(buf
, pkt_dev
->in6_saddr
.s6_addr
);
1292 ipv6_addr_copy(&pkt_dev
->cur_in6_saddr
, &pkt_dev
->in6_saddr
);
1295 printk(KERN_DEBUG
"pktgen: src6 set to: %s\n", buf
);
1298 sprintf(pg_result
, "OK: src6=%s", buf
);
1301 if (!strcmp(name
, "src_min")) {
1302 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->src_min
) - 1);
1306 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1309 if (strcmp(buf
, pkt_dev
->src_min
) != 0) {
1310 memset(pkt_dev
->src_min
, 0, sizeof(pkt_dev
->src_min
));
1311 strncpy(pkt_dev
->src_min
, buf
, len
);
1312 pkt_dev
->saddr_min
= in_aton(pkt_dev
->src_min
);
1313 pkt_dev
->cur_saddr
= pkt_dev
->saddr_min
;
1316 printk(KERN_DEBUG
"pktgen: src_min set to: %s\n",
1319 sprintf(pg_result
, "OK: src_min=%s", pkt_dev
->src_min
);
1322 if (!strcmp(name
, "src_max")) {
1323 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->src_max
) - 1);
1327 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1330 if (strcmp(buf
, pkt_dev
->src_max
) != 0) {
1331 memset(pkt_dev
->src_max
, 0, sizeof(pkt_dev
->src_max
));
1332 strncpy(pkt_dev
->src_max
, buf
, len
);
1333 pkt_dev
->saddr_max
= in_aton(pkt_dev
->src_max
);
1334 pkt_dev
->cur_saddr
= pkt_dev
->saddr_max
;
1337 printk(KERN_DEBUG
"pktgen: src_max set to: %s\n",
1340 sprintf(pg_result
, "OK: src_max=%s", pkt_dev
->src_max
);
1343 if (!strcmp(name
, "dst_mac")) {
1345 unsigned char old_dmac
[ETH_ALEN
];
1346 unsigned char *m
= pkt_dev
->dst_mac
;
1347 memcpy(old_dmac
, pkt_dev
->dst_mac
, ETH_ALEN
);
1349 len
= strn_len(&user_buffer
[i
], sizeof(valstr
) - 1);
1353 memset(valstr
, 0, sizeof(valstr
));
1354 if (copy_from_user(valstr
, &user_buffer
[i
], len
))
1358 for (*m
= 0; *v
&& m
< pkt_dev
->dst_mac
+ 6; v
++) {
1359 if (*v
>= '0' && *v
<= '9') {
1363 if (*v
>= 'A' && *v
<= 'F') {
1365 *m
+= *v
- 'A' + 10;
1367 if (*v
>= 'a' && *v
<= 'f') {
1369 *m
+= *v
- 'a' + 10;
1377 /* Set up Dest MAC */
1378 if (compare_ether_addr(old_dmac
, pkt_dev
->dst_mac
))
1379 memcpy(&(pkt_dev
->hh
[0]), pkt_dev
->dst_mac
, ETH_ALEN
);
1381 sprintf(pg_result
, "OK: dstmac");
1384 if (!strcmp(name
, "src_mac")) {
1386 unsigned char old_smac
[ETH_ALEN
];
1387 unsigned char *m
= pkt_dev
->src_mac
;
1389 memcpy(old_smac
, pkt_dev
->src_mac
, ETH_ALEN
);
1391 len
= strn_len(&user_buffer
[i
], sizeof(valstr
) - 1);
1395 memset(valstr
, 0, sizeof(valstr
));
1396 if (copy_from_user(valstr
, &user_buffer
[i
], len
))
1400 for (*m
= 0; *v
&& m
< pkt_dev
->src_mac
+ 6; v
++) {
1401 if (*v
>= '0' && *v
<= '9') {
1405 if (*v
>= 'A' && *v
<= 'F') {
1407 *m
+= *v
- 'A' + 10;
1409 if (*v
>= 'a' && *v
<= 'f') {
1411 *m
+= *v
- 'a' + 10;
1419 /* Set up Src MAC */
1420 if (compare_ether_addr(old_smac
, pkt_dev
->src_mac
))
1421 memcpy(&(pkt_dev
->hh
[6]), pkt_dev
->src_mac
, ETH_ALEN
);
1423 sprintf(pg_result
, "OK: srcmac");
1427 if (!strcmp(name
, "clear_counters")) {
1428 pktgen_clear_counters(pkt_dev
);
1429 sprintf(pg_result
, "OK: Clearing counters.\n");
1433 if (!strcmp(name
, "flows")) {
1434 len
= num_arg(&user_buffer
[i
], 10, &value
);
1439 if (value
> MAX_CFLOWS
)
1442 pkt_dev
->cflows
= value
;
1443 sprintf(pg_result
, "OK: flows=%u", pkt_dev
->cflows
);
1447 if (!strcmp(name
, "flowlen")) {
1448 len
= num_arg(&user_buffer
[i
], 10, &value
);
1453 pkt_dev
->lflow
= value
;
1454 sprintf(pg_result
, "OK: flowlen=%u", pkt_dev
->lflow
);
1458 if (!strcmp(name
, "queue_map_min")) {
1459 len
= num_arg(&user_buffer
[i
], 5, &value
);
1464 pkt_dev
->queue_map_min
= value
;
1465 sprintf(pg_result
, "OK: queue_map_min=%u", pkt_dev
->queue_map_min
);
1469 if (!strcmp(name
, "queue_map_max")) {
1470 len
= num_arg(&user_buffer
[i
], 5, &value
);
1475 pkt_dev
->queue_map_max
= value
;
1476 sprintf(pg_result
, "OK: queue_map_max=%u", pkt_dev
->queue_map_max
);
1480 if (!strcmp(name
, "mpls")) {
1483 len
= get_labels(&user_buffer
[i
], pkt_dev
);
1487 cnt
= sprintf(pg_result
, "OK: mpls=");
1488 for (n
= 0; n
< pkt_dev
->nr_labels
; n
++)
1489 cnt
+= sprintf(pg_result
+ cnt
,
1490 "%08x%s", ntohl(pkt_dev
->labels
[n
]),
1491 n
== pkt_dev
->nr_labels
-1 ? "" : ",");
1493 if (pkt_dev
->nr_labels
&& pkt_dev
->vlan_id
!= 0xffff) {
1494 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1495 pkt_dev
->svlan_id
= 0xffff;
1498 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN auto turned off\n");
1503 if (!strcmp(name
, "vlan_id")) {
1504 len
= num_arg(&user_buffer
[i
], 4, &value
);
1509 if (value
<= 4095) {
1510 pkt_dev
->vlan_id
= value
; /* turn on VLAN */
1513 printk(KERN_DEBUG
"pktgen: VLAN turned on\n");
1515 if (debug
&& pkt_dev
->nr_labels
)
1516 printk(KERN_DEBUG
"pktgen: MPLS auto turned off\n");
1518 pkt_dev
->nr_labels
= 0; /* turn off MPLS */
1519 sprintf(pg_result
, "OK: vlan_id=%u", pkt_dev
->vlan_id
);
1521 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1522 pkt_dev
->svlan_id
= 0xffff;
1525 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN turned off\n");
1530 if (!strcmp(name
, "vlan_p")) {
1531 len
= num_arg(&user_buffer
[i
], 1, &value
);
1536 if ((value
<= 7) && (pkt_dev
->vlan_id
!= 0xffff)) {
1537 pkt_dev
->vlan_p
= value
;
1538 sprintf(pg_result
, "OK: vlan_p=%u", pkt_dev
->vlan_p
);
1540 sprintf(pg_result
, "ERROR: vlan_p must be 0-7");
1545 if (!strcmp(name
, "vlan_cfi")) {
1546 len
= num_arg(&user_buffer
[i
], 1, &value
);
1551 if ((value
<= 1) && (pkt_dev
->vlan_id
!= 0xffff)) {
1552 pkt_dev
->vlan_cfi
= value
;
1553 sprintf(pg_result
, "OK: vlan_cfi=%u", pkt_dev
->vlan_cfi
);
1555 sprintf(pg_result
, "ERROR: vlan_cfi must be 0-1");
1560 if (!strcmp(name
, "svlan_id")) {
1561 len
= num_arg(&user_buffer
[i
], 4, &value
);
1566 if ((value
<= 4095) && ((pkt_dev
->vlan_id
!= 0xffff))) {
1567 pkt_dev
->svlan_id
= value
; /* turn on SVLAN */
1570 printk(KERN_DEBUG
"pktgen: SVLAN turned on\n");
1572 if (debug
&& pkt_dev
->nr_labels
)
1573 printk(KERN_DEBUG
"pktgen: MPLS auto turned off\n");
1575 pkt_dev
->nr_labels
= 0; /* turn off MPLS */
1576 sprintf(pg_result
, "OK: svlan_id=%u", pkt_dev
->svlan_id
);
1578 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1579 pkt_dev
->svlan_id
= 0xffff;
1582 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN turned off\n");
1587 if (!strcmp(name
, "svlan_p")) {
1588 len
= num_arg(&user_buffer
[i
], 1, &value
);
1593 if ((value
<= 7) && (pkt_dev
->svlan_id
!= 0xffff)) {
1594 pkt_dev
->svlan_p
= value
;
1595 sprintf(pg_result
, "OK: svlan_p=%u", pkt_dev
->svlan_p
);
1597 sprintf(pg_result
, "ERROR: svlan_p must be 0-7");
1602 if (!strcmp(name
, "svlan_cfi")) {
1603 len
= num_arg(&user_buffer
[i
], 1, &value
);
1608 if ((value
<= 1) && (pkt_dev
->svlan_id
!= 0xffff)) {
1609 pkt_dev
->svlan_cfi
= value
;
1610 sprintf(pg_result
, "OK: svlan_cfi=%u", pkt_dev
->svlan_cfi
);
1612 sprintf(pg_result
, "ERROR: svlan_cfi must be 0-1");
1617 if (!strcmp(name
, "tos")) {
1618 __u32 tmp_value
= 0;
1619 len
= hex32_arg(&user_buffer
[i
], 2, &tmp_value
);
1625 pkt_dev
->tos
= tmp_value
;
1626 sprintf(pg_result
, "OK: tos=0x%02x", pkt_dev
->tos
);
1628 sprintf(pg_result
, "ERROR: tos must be 00-ff");
1633 if (!strcmp(name
, "traffic_class")) {
1634 __u32 tmp_value
= 0;
1635 len
= hex32_arg(&user_buffer
[i
], 2, &tmp_value
);
1641 pkt_dev
->traffic_class
= tmp_value
;
1642 sprintf(pg_result
, "OK: traffic_class=0x%02x", pkt_dev
->traffic_class
);
1644 sprintf(pg_result
, "ERROR: traffic_class must be 00-ff");
1649 sprintf(pkt_dev
->result
, "No such parameter \"%s\"", name
);
1653 static int pktgen_if_open(struct inode
*inode
, struct file
*file
)
1655 return single_open(file
, pktgen_if_show
, PDE(inode
)->data
);
1658 static const struct file_operations pktgen_if_fops
= {
1659 .owner
= THIS_MODULE
,
1660 .open
= pktgen_if_open
,
1662 .llseek
= seq_lseek
,
1663 .write
= pktgen_if_write
,
1664 .release
= single_release
,
1667 static int pktgen_thread_show(struct seq_file
*seq
, void *v
)
1669 struct pktgen_thread
*t
= seq
->private;
1670 struct pktgen_dev
*pkt_dev
;
1674 seq_printf(seq
, "Running: ");
1677 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
1678 if (pkt_dev
->running
)
1679 seq_printf(seq
, "%s ", pkt_dev
->odev
->name
);
1681 seq_printf(seq
, "\nStopped: ");
1683 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
1684 if (!pkt_dev
->running
)
1685 seq_printf(seq
, "%s ", pkt_dev
->odev
->name
);
1688 seq_printf(seq
, "\nResult: %s\n", t
->result
);
1690 seq_printf(seq
, "\nResult: NA\n");
1697 static ssize_t
pktgen_thread_write(struct file
*file
,
1698 const char __user
* user_buffer
,
1699 size_t count
, loff_t
* offset
)
1701 struct seq_file
*seq
= (struct seq_file
*)file
->private_data
;
1702 struct pktgen_thread
*t
= seq
->private;
1703 int i
= 0, max
, len
, ret
;
1708 // sprintf(pg_result, "Wrong command format");
1713 len
= count_trail_chars(&user_buffer
[i
], max
);
1719 /* Read variable name */
1721 len
= strn_len(&user_buffer
[i
], sizeof(name
) - 1);
1725 memset(name
, 0, sizeof(name
));
1726 if (copy_from_user(name
, &user_buffer
[i
], len
))
1731 len
= count_trail_chars(&user_buffer
[i
], max
);
1738 printk(KERN_DEBUG
"pktgen: t=%s, count=%lu\n",
1739 name
, (unsigned long)count
);
1742 printk(KERN_ERR
"pktgen: ERROR: No thread\n");
1747 pg_result
= &(t
->result
[0]);
1749 if (!strcmp(name
, "add_device")) {
1752 len
= strn_len(&user_buffer
[i
], sizeof(f
) - 1);
1757 if (copy_from_user(f
, &user_buffer
[i
], len
))
1760 mutex_lock(&pktgen_thread_lock
);
1761 pktgen_add_device(t
, f
);
1762 mutex_unlock(&pktgen_thread_lock
);
1764 sprintf(pg_result
, "OK: add_device=%s", f
);
1768 if (!strcmp(name
, "rem_device_all")) {
1769 mutex_lock(&pktgen_thread_lock
);
1770 t
->control
|= T_REMDEVALL
;
1771 mutex_unlock(&pktgen_thread_lock
);
1772 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1774 sprintf(pg_result
, "OK: rem_device_all");
1778 if (!strcmp(name
, "max_before_softirq")) {
1779 sprintf(pg_result
, "OK: Note! max_before_softirq is obsoleted -- Do not use");
1789 static int pktgen_thread_open(struct inode
*inode
, struct file
*file
)
1791 return single_open(file
, pktgen_thread_show
, PDE(inode
)->data
);
1794 static const struct file_operations pktgen_thread_fops
= {
1795 .owner
= THIS_MODULE
,
1796 .open
= pktgen_thread_open
,
1798 .llseek
= seq_lseek
,
1799 .write
= pktgen_thread_write
,
1800 .release
= single_release
,
1803 /* Think find or remove for NN */
1804 static struct pktgen_dev
*__pktgen_NN_threads(const char *ifname
, int remove
)
1806 struct pktgen_thread
*t
;
1807 struct pktgen_dev
*pkt_dev
= NULL
;
1809 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
1810 pkt_dev
= pktgen_find_dev(t
, ifname
);
1814 pkt_dev
->removal_mark
= 1;
1815 t
->control
|= T_REMDEV
;
1825 * mark a device for removal
1827 static void pktgen_mark_device(const char *ifname
)
1829 struct pktgen_dev
*pkt_dev
= NULL
;
1830 const int max_tries
= 10, msec_per_try
= 125;
1833 mutex_lock(&pktgen_thread_lock
);
1834 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname
);
1838 pkt_dev
= __pktgen_NN_threads(ifname
, REMOVE
);
1839 if (pkt_dev
== NULL
)
1840 break; /* success */
1842 mutex_unlock(&pktgen_thread_lock
);
1843 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1844 "to disappear....\n", ifname
);
1845 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try
));
1846 mutex_lock(&pktgen_thread_lock
);
1848 if (++i
>= max_tries
) {
1849 printk(KERN_ERR
"pktgen_mark_device: timed out after "
1850 "waiting %d msec for device %s to be removed\n",
1851 msec_per_try
* i
, ifname
);
1857 mutex_unlock(&pktgen_thread_lock
);
1860 static void pktgen_change_name(struct net_device
*dev
)
1862 struct pktgen_thread
*t
;
1864 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
1865 struct pktgen_dev
*pkt_dev
;
1867 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
1868 if (pkt_dev
->odev
!= dev
)
1871 remove_proc_entry(pkt_dev
->entry
->name
, pg_proc_dir
);
1873 pkt_dev
->entry
= create_proc_entry(dev
->name
, 0600,
1875 if (!pkt_dev
->entry
)
1876 printk(KERN_ERR
"pktgen: can't move proc "
1877 " entry for '%s'\n", dev
->name
);
1883 static int pktgen_device_event(struct notifier_block
*unused
,
1884 unsigned long event
, void *ptr
)
1886 struct net_device
*dev
= ptr
;
1888 if (!net_eq(dev_net(dev
), &init_net
))
1891 /* It is OK that we do not hold the group lock right now,
1892 * as we run under the RTNL lock.
1896 case NETDEV_CHANGENAME
:
1897 pktgen_change_name(dev
);
1900 case NETDEV_UNREGISTER
:
1901 pktgen_mark_device(dev
->name
);
1908 static struct net_device
*pktgen_dev_get_by_name(struct pktgen_dev
*pkt_dev
, const char *ifname
)
1913 for(i
=0; ifname
[i
] != '@'; i
++) {
1921 return dev_get_by_name(&init_net
, b
);
1925 /* Associate pktgen_dev with a device. */
1927 static int pktgen_setup_dev(struct pktgen_dev
*pkt_dev
, const char *ifname
)
1929 struct net_device
*odev
;
1932 /* Clean old setups */
1933 if (pkt_dev
->odev
) {
1934 dev_put(pkt_dev
->odev
);
1935 pkt_dev
->odev
= NULL
;
1938 odev
= pktgen_dev_get_by_name(pkt_dev
, ifname
);
1940 printk(KERN_ERR
"pktgen: no such netdevice: \"%s\"\n", ifname
);
1944 if (odev
->type
!= ARPHRD_ETHER
) {
1945 printk(KERN_ERR
"pktgen: not an ethernet device: \"%s\"\n", ifname
);
1947 } else if (!netif_running(odev
)) {
1948 printk(KERN_ERR
"pktgen: device is down: \"%s\"\n", ifname
);
1951 pkt_dev
->odev
= odev
;
1959 /* Read pkt_dev from the interface and set up internal pktgen_dev
1960 * structure to have the right information to create/send packets
1962 static void pktgen_setup_inject(struct pktgen_dev
*pkt_dev
)
1966 if (!pkt_dev
->odev
) {
1967 printk(KERN_ERR
"pktgen: ERROR: pkt_dev->odev == NULL in "
1969 sprintf(pkt_dev
->result
,
1970 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
1974 /* make sure that we don't pick a non-existing transmit queue */
1975 ntxq
= pkt_dev
->odev
->real_num_tx_queues
;
1976 if (ntxq
<= num_online_cpus() && (pkt_dev
->flags
& F_QUEUE_MAP_CPU
)) {
1977 printk(KERN_WARNING
"pktgen: WARNING: QUEUE_MAP_CPU "
1978 "disabled because CPU count (%d) exceeds number ",
1980 printk(KERN_WARNING
"pktgen: WARNING: of tx queues "
1981 "(%d) on %s \n", ntxq
, pkt_dev
->odev
->name
);
1982 pkt_dev
->flags
&= ~F_QUEUE_MAP_CPU
;
1984 if (ntxq
<= pkt_dev
->queue_map_min
) {
1985 printk(KERN_WARNING
"pktgen: WARNING: Requested "
1986 "queue_map_min (%d) exceeds number of tx\n",
1987 pkt_dev
->queue_map_min
);
1988 printk(KERN_WARNING
"pktgen: WARNING: queues (%d) on "
1989 "%s, resetting\n", ntxq
, pkt_dev
->odev
->name
);
1990 pkt_dev
->queue_map_min
= ntxq
- 1;
1992 if (ntxq
<= pkt_dev
->queue_map_max
) {
1993 printk(KERN_WARNING
"pktgen: WARNING: Requested "
1994 "queue_map_max (%d) exceeds number of tx\n",
1995 pkt_dev
->queue_map_max
);
1996 printk(KERN_WARNING
"pktgen: WARNING: queues (%d) on "
1997 "%s, resetting\n", ntxq
, pkt_dev
->odev
->name
);
1998 pkt_dev
->queue_map_max
= ntxq
- 1;
2001 /* Default to the interface's mac if not explicitly set. */
2003 if (is_zero_ether_addr(pkt_dev
->src_mac
))
2004 memcpy(&(pkt_dev
->hh
[6]), pkt_dev
->odev
->dev_addr
, ETH_ALEN
);
2006 /* Set up Dest MAC */
2007 memcpy(&(pkt_dev
->hh
[0]), pkt_dev
->dst_mac
, ETH_ALEN
);
2009 /* Set up pkt size */
2010 pkt_dev
->cur_pkt_size
= pkt_dev
->min_pkt_size
;
2012 if (pkt_dev
->flags
& F_IPV6
) {
2014 * Skip this automatic address setting until locks or functions
2019 int i
, set
= 0, err
= 1;
2020 struct inet6_dev
*idev
;
2022 for (i
= 0; i
< IN6_ADDR_HSIZE
; i
++)
2023 if (pkt_dev
->cur_in6_saddr
.s6_addr
[i
]) {
2031 * Use linklevel address if unconfigured.
2033 * use ipv6_get_lladdr if/when it's get exported
2037 if ((idev
= __in6_dev_get(pkt_dev
->odev
)) != NULL
) {
2038 struct inet6_ifaddr
*ifp
;
2040 read_lock_bh(&idev
->lock
);
2041 for (ifp
= idev
->addr_list
; ifp
;
2042 ifp
= ifp
->if_next
) {
2043 if (ifp
->scope
== IFA_LINK
2045 flags
& IFA_F_TENTATIVE
)) {
2046 ipv6_addr_copy(&pkt_dev
->
2053 read_unlock_bh(&idev
->lock
);
2057 printk(KERN_ERR
"pktgen: ERROR: IPv6 link "
2058 "address not availble.\n");
2062 pkt_dev
->saddr_min
= 0;
2063 pkt_dev
->saddr_max
= 0;
2064 if (strlen(pkt_dev
->src_min
) == 0) {
2066 struct in_device
*in_dev
;
2069 in_dev
= __in_dev_get_rcu(pkt_dev
->odev
);
2071 if (in_dev
->ifa_list
) {
2072 pkt_dev
->saddr_min
=
2073 in_dev
->ifa_list
->ifa_address
;
2074 pkt_dev
->saddr_max
= pkt_dev
->saddr_min
;
2079 pkt_dev
->saddr_min
= in_aton(pkt_dev
->src_min
);
2080 pkt_dev
->saddr_max
= in_aton(pkt_dev
->src_max
);
2083 pkt_dev
->daddr_min
= in_aton(pkt_dev
->dst_min
);
2084 pkt_dev
->daddr_max
= in_aton(pkt_dev
->dst_max
);
2086 /* Initialize current values. */
2087 pkt_dev
->cur_dst_mac_offset
= 0;
2088 pkt_dev
->cur_src_mac_offset
= 0;
2089 pkt_dev
->cur_saddr
= pkt_dev
->saddr_min
;
2090 pkt_dev
->cur_daddr
= pkt_dev
->daddr_min
;
2091 pkt_dev
->cur_udp_dst
= pkt_dev
->udp_dst_min
;
2092 pkt_dev
->cur_udp_src
= pkt_dev
->udp_src_min
;
2093 pkt_dev
->nflows
= 0;
2096 static void spin(struct pktgen_dev
*pkt_dev
, __u64 spin_until_us
)
2101 start
= now
= getCurUs();
2102 while (now
< spin_until_us
) {
2103 /* TODO: optimize sleeping behavior */
2104 if (spin_until_us
- now
> jiffies_to_usecs(1) + 1)
2105 schedule_timeout_interruptible(1);
2106 else if (spin_until_us
- now
> 100) {
2107 if (!pkt_dev
->running
)
2116 pkt_dev
->idle_acc
+= now
- start
;
2119 static inline void set_pkt_overhead(struct pktgen_dev
*pkt_dev
)
2121 pkt_dev
->pkt_overhead
= 0;
2122 pkt_dev
->pkt_overhead
+= pkt_dev
->nr_labels
*sizeof(u32
);
2123 pkt_dev
->pkt_overhead
+= VLAN_TAG_SIZE(pkt_dev
);
2124 pkt_dev
->pkt_overhead
+= SVLAN_TAG_SIZE(pkt_dev
);
2127 static inline int f_seen(struct pktgen_dev
*pkt_dev
, int flow
)
2130 if (pkt_dev
->flows
[flow
].flags
& F_INIT
)
2136 static inline int f_pick(struct pktgen_dev
*pkt_dev
)
2138 int flow
= pkt_dev
->curfl
;
2140 if (pkt_dev
->flags
& F_FLOW_SEQ
) {
2141 if (pkt_dev
->flows
[flow
].count
>= pkt_dev
->lflow
) {
2143 pkt_dev
->flows
[flow
].count
= 0;
2144 pkt_dev
->flows
[flow
].flags
= 0;
2145 pkt_dev
->curfl
+= 1;
2146 if (pkt_dev
->curfl
>= pkt_dev
->cflows
)
2147 pkt_dev
->curfl
= 0; /*reset */
2150 flow
= random32() % pkt_dev
->cflows
;
2151 pkt_dev
->curfl
= flow
;
2153 if (pkt_dev
->flows
[flow
].count
> pkt_dev
->lflow
) {
2154 pkt_dev
->flows
[flow
].count
= 0;
2155 pkt_dev
->flows
[flow
].flags
= 0;
2159 return pkt_dev
->curfl
;
2164 /* If there was already an IPSEC SA, we keep it as is, else
2165 * we go look for it ...
2167 static void get_ipsec_sa(struct pktgen_dev
*pkt_dev
, int flow
)
2169 struct xfrm_state
*x
= pkt_dev
->flows
[flow
].x
;
2171 /*slow path: we dont already have xfrm_state*/
2172 x
= xfrm_stateonly_find((xfrm_address_t
*)&pkt_dev
->cur_daddr
,
2173 (xfrm_address_t
*)&pkt_dev
->cur_saddr
,
2176 pkt_dev
->ipsproto
, 0);
2178 pkt_dev
->flows
[flow
].x
= x
;
2179 set_pkt_overhead(pkt_dev
);
2180 pkt_dev
->pkt_overhead
+=x
->props
.header_len
;
2186 static void set_cur_queue_map(struct pktgen_dev
*pkt_dev
)
2189 if (pkt_dev
->flags
& F_QUEUE_MAP_CPU
)
2190 pkt_dev
->cur_queue_map
= smp_processor_id();
2192 else if (pkt_dev
->queue_map_min
< pkt_dev
->queue_map_max
) {
2194 if (pkt_dev
->flags
& F_QUEUE_MAP_RND
) {
2196 (pkt_dev
->queue_map_max
-
2197 pkt_dev
->queue_map_min
+ 1)
2198 + pkt_dev
->queue_map_min
;
2200 t
= pkt_dev
->cur_queue_map
+ 1;
2201 if (t
> pkt_dev
->queue_map_max
)
2202 t
= pkt_dev
->queue_map_min
;
2204 pkt_dev
->cur_queue_map
= t
;
2208 /* Increment/randomize headers according to flags and current values
2209 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2211 static void mod_cur_headers(struct pktgen_dev
*pkt_dev
)
2217 if (pkt_dev
->cflows
)
2218 flow
= f_pick(pkt_dev
);
2220 /* Deal with source MAC */
2221 if (pkt_dev
->src_mac_count
> 1) {
2225 if (pkt_dev
->flags
& F_MACSRC_RND
)
2226 mc
= random32() % pkt_dev
->src_mac_count
;
2228 mc
= pkt_dev
->cur_src_mac_offset
++;
2229 if (pkt_dev
->cur_src_mac_offset
>=
2230 pkt_dev
->src_mac_count
)
2231 pkt_dev
->cur_src_mac_offset
= 0;
2234 tmp
= pkt_dev
->src_mac
[5] + (mc
& 0xFF);
2235 pkt_dev
->hh
[11] = tmp
;
2236 tmp
= (pkt_dev
->src_mac
[4] + ((mc
>> 8) & 0xFF) + (tmp
>> 8));
2237 pkt_dev
->hh
[10] = tmp
;
2238 tmp
= (pkt_dev
->src_mac
[3] + ((mc
>> 16) & 0xFF) + (tmp
>> 8));
2239 pkt_dev
->hh
[9] = tmp
;
2240 tmp
= (pkt_dev
->src_mac
[2] + ((mc
>> 24) & 0xFF) + (tmp
>> 8));
2241 pkt_dev
->hh
[8] = tmp
;
2242 tmp
= (pkt_dev
->src_mac
[1] + (tmp
>> 8));
2243 pkt_dev
->hh
[7] = tmp
;
2246 /* Deal with Destination MAC */
2247 if (pkt_dev
->dst_mac_count
> 1) {
2251 if (pkt_dev
->flags
& F_MACDST_RND
)
2252 mc
= random32() % pkt_dev
->dst_mac_count
;
2255 mc
= pkt_dev
->cur_dst_mac_offset
++;
2256 if (pkt_dev
->cur_dst_mac_offset
>=
2257 pkt_dev
->dst_mac_count
) {
2258 pkt_dev
->cur_dst_mac_offset
= 0;
2262 tmp
= pkt_dev
->dst_mac
[5] + (mc
& 0xFF);
2263 pkt_dev
->hh
[5] = tmp
;
2264 tmp
= (pkt_dev
->dst_mac
[4] + ((mc
>> 8) & 0xFF) + (tmp
>> 8));
2265 pkt_dev
->hh
[4] = tmp
;
2266 tmp
= (pkt_dev
->dst_mac
[3] + ((mc
>> 16) & 0xFF) + (tmp
>> 8));
2267 pkt_dev
->hh
[3] = tmp
;
2268 tmp
= (pkt_dev
->dst_mac
[2] + ((mc
>> 24) & 0xFF) + (tmp
>> 8));
2269 pkt_dev
->hh
[2] = tmp
;
2270 tmp
= (pkt_dev
->dst_mac
[1] + (tmp
>> 8));
2271 pkt_dev
->hh
[1] = tmp
;
2274 if (pkt_dev
->flags
& F_MPLS_RND
) {
2276 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
2277 if (pkt_dev
->labels
[i
] & MPLS_STACK_BOTTOM
)
2278 pkt_dev
->labels
[i
] = MPLS_STACK_BOTTOM
|
2279 ((__force __be32
)random32() &
2283 if ((pkt_dev
->flags
& F_VID_RND
) && (pkt_dev
->vlan_id
!= 0xffff)) {
2284 pkt_dev
->vlan_id
= random32() & (4096-1);
2287 if ((pkt_dev
->flags
& F_SVID_RND
) && (pkt_dev
->svlan_id
!= 0xffff)) {
2288 pkt_dev
->svlan_id
= random32() & (4096 - 1);
2291 if (pkt_dev
->udp_src_min
< pkt_dev
->udp_src_max
) {
2292 if (pkt_dev
->flags
& F_UDPSRC_RND
)
2293 pkt_dev
->cur_udp_src
= random32() %
2294 (pkt_dev
->udp_src_max
- pkt_dev
->udp_src_min
)
2295 + pkt_dev
->udp_src_min
;
2298 pkt_dev
->cur_udp_src
++;
2299 if (pkt_dev
->cur_udp_src
>= pkt_dev
->udp_src_max
)
2300 pkt_dev
->cur_udp_src
= pkt_dev
->udp_src_min
;
2304 if (pkt_dev
->udp_dst_min
< pkt_dev
->udp_dst_max
) {
2305 if (pkt_dev
->flags
& F_UDPDST_RND
) {
2306 pkt_dev
->cur_udp_dst
= random32() %
2307 (pkt_dev
->udp_dst_max
- pkt_dev
->udp_dst_min
)
2308 + pkt_dev
->udp_dst_min
;
2310 pkt_dev
->cur_udp_dst
++;
2311 if (pkt_dev
->cur_udp_dst
>= pkt_dev
->udp_dst_max
)
2312 pkt_dev
->cur_udp_dst
= pkt_dev
->udp_dst_min
;
2316 if (!(pkt_dev
->flags
& F_IPV6
)) {
2318 if ((imn
= ntohl(pkt_dev
->saddr_min
)) < (imx
=
2322 if (pkt_dev
->flags
& F_IPSRC_RND
)
2323 t
= random32() % (imx
- imn
) + imn
;
2325 t
= ntohl(pkt_dev
->cur_saddr
);
2331 pkt_dev
->cur_saddr
= htonl(t
);
2334 if (pkt_dev
->cflows
&& f_seen(pkt_dev
, flow
)) {
2335 pkt_dev
->cur_daddr
= pkt_dev
->flows
[flow
].cur_daddr
;
2337 imn
= ntohl(pkt_dev
->daddr_min
);
2338 imx
= ntohl(pkt_dev
->daddr_max
);
2342 if (pkt_dev
->flags
& F_IPDST_RND
) {
2344 t
= random32() % (imx
- imn
) + imn
;
2347 while (ipv4_is_loopback(s
) ||
2348 ipv4_is_multicast(s
) ||
2349 ipv4_is_lbcast(s
) ||
2350 ipv4_is_zeronet(s
) ||
2351 ipv4_is_local_multicast(s
)) {
2352 t
= random32() % (imx
- imn
) + imn
;
2355 pkt_dev
->cur_daddr
= s
;
2357 t
= ntohl(pkt_dev
->cur_daddr
);
2362 pkt_dev
->cur_daddr
= htonl(t
);
2365 if (pkt_dev
->cflows
) {
2366 pkt_dev
->flows
[flow
].flags
|= F_INIT
;
2367 pkt_dev
->flows
[flow
].cur_daddr
=
2370 if (pkt_dev
->flags
& F_IPSEC_ON
)
2371 get_ipsec_sa(pkt_dev
, flow
);
2376 } else { /* IPV6 * */
2378 if (pkt_dev
->min_in6_daddr
.s6_addr32
[0] == 0 &&
2379 pkt_dev
->min_in6_daddr
.s6_addr32
[1] == 0 &&
2380 pkt_dev
->min_in6_daddr
.s6_addr32
[2] == 0 &&
2381 pkt_dev
->min_in6_daddr
.s6_addr32
[3] == 0) ;
2385 /* Only random destinations yet */
2387 for (i
= 0; i
< 4; i
++) {
2388 pkt_dev
->cur_in6_daddr
.s6_addr32
[i
] =
2389 (((__force __be32
)random32() |
2390 pkt_dev
->min_in6_daddr
.s6_addr32
[i
]) &
2391 pkt_dev
->max_in6_daddr
.s6_addr32
[i
]);
2396 if (pkt_dev
->min_pkt_size
< pkt_dev
->max_pkt_size
) {
2398 if (pkt_dev
->flags
& F_TXSIZE_RND
) {
2400 (pkt_dev
->max_pkt_size
- pkt_dev
->min_pkt_size
)
2401 + pkt_dev
->min_pkt_size
;
2403 t
= pkt_dev
->cur_pkt_size
+ 1;
2404 if (t
> pkt_dev
->max_pkt_size
)
2405 t
= pkt_dev
->min_pkt_size
;
2407 pkt_dev
->cur_pkt_size
= t
;
2410 set_cur_queue_map(pkt_dev
);
2412 pkt_dev
->flows
[flow
].count
++;
2417 static int pktgen_output_ipsec(struct sk_buff
*skb
, struct pktgen_dev
*pkt_dev
)
2419 struct xfrm_state
*x
= pkt_dev
->flows
[pkt_dev
->curfl
].x
;
2425 /* XXX: we dont support tunnel mode for now until
2426 * we resolve the dst issue */
2427 if (x
->props
.mode
!= XFRM_MODE_TRANSPORT
)
2430 spin_lock(&x
->lock
);
2433 err
= x
->outer_mode
->output(x
, skb
);
2436 err
= x
->type
->output(x
, skb
);
2440 x
->curlft
.bytes
+=skb
->len
;
2441 x
->curlft
.packets
++;
2443 spin_unlock(&x
->lock
);
2447 static inline void free_SAs(struct pktgen_dev
*pkt_dev
)
2449 if (pkt_dev
->cflows
) {
2450 /* let go of the SAs if we have them */
2452 for (; i
< pkt_dev
->nflows
; i
++){
2453 struct xfrm_state
*x
= pkt_dev
->flows
[i
].x
;
2456 pkt_dev
->flows
[i
].x
= NULL
;
2462 static inline int process_ipsec(struct pktgen_dev
*pkt_dev
,
2463 struct sk_buff
*skb
, __be16 protocol
)
2465 if (pkt_dev
->flags
& F_IPSEC_ON
) {
2466 struct xfrm_state
*x
= pkt_dev
->flows
[pkt_dev
->curfl
].x
;
2471 nhead
= x
->props
.header_len
- skb_headroom(skb
);
2473 ret
= pskb_expand_head(skb
, nhead
, 0, GFP_ATOMIC
);
2475 printk(KERN_ERR
"Error expanding "
2476 "ipsec packet %d\n",ret
);
2481 /* ipsec is not expecting ll header */
2482 skb_pull(skb
, ETH_HLEN
);
2483 ret
= pktgen_output_ipsec(skb
, pkt_dev
);
2485 printk(KERN_ERR
"Error creating ipsec "
2491 eth
= (__u8
*) skb_push(skb
, ETH_HLEN
);
2492 memcpy(eth
, pkt_dev
->hh
, 12);
2493 *(u16
*) & eth
[12] = protocol
;
2500 static void mpls_push(__be32
*mpls
, struct pktgen_dev
*pkt_dev
)
2503 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++) {
2504 *mpls
++ = pkt_dev
->labels
[i
] & ~MPLS_STACK_BOTTOM
;
2507 *mpls
|= MPLS_STACK_BOTTOM
;
2510 static inline __be16
build_tci(unsigned int id
, unsigned int cfi
,
2513 return htons(id
| (cfi
<< 12) | (prio
<< 13));
2516 static struct sk_buff
*fill_packet_ipv4(struct net_device
*odev
,
2517 struct pktgen_dev
*pkt_dev
)
2519 struct sk_buff
*skb
= NULL
;
2521 struct udphdr
*udph
;
2524 struct pktgen_hdr
*pgh
= NULL
;
2525 __be16 protocol
= htons(ETH_P_IP
);
2527 __be16
*vlan_tci
= NULL
; /* Encapsulates priority and VLAN ID */
2528 __be16
*vlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for VLAN tag */
2529 __be16
*svlan_tci
= NULL
; /* Encapsulates priority and SVLAN ID */
2530 __be16
*svlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for SVLAN tag */
2533 if (pkt_dev
->nr_labels
)
2534 protocol
= htons(ETH_P_MPLS_UC
);
2536 if (pkt_dev
->vlan_id
!= 0xffff)
2537 protocol
= htons(ETH_P_8021Q
);
2539 /* Update any of the values, used when we're incrementing various
2542 queue_map
= pkt_dev
->cur_queue_map
;
2543 mod_cur_headers(pkt_dev
);
2545 datalen
= (odev
->hard_header_len
+ 16) & ~0xf;
2546 skb
= alloc_skb(pkt_dev
->cur_pkt_size
+ 64 + datalen
+
2547 pkt_dev
->pkt_overhead
, GFP_ATOMIC
);
2549 sprintf(pkt_dev
->result
, "No memory");
2553 skb_reserve(skb
, datalen
);
2555 /* Reserve for ethernet and IP header */
2556 eth
= (__u8
*) skb_push(skb
, 14);
2557 mpls
= (__be32
*)skb_put(skb
, pkt_dev
->nr_labels
*sizeof(__u32
));
2558 if (pkt_dev
->nr_labels
)
2559 mpls_push(mpls
, pkt_dev
);
2561 if (pkt_dev
->vlan_id
!= 0xffff) {
2562 if (pkt_dev
->svlan_id
!= 0xffff) {
2563 svlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2564 *svlan_tci
= build_tci(pkt_dev
->svlan_id
,
2567 svlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2568 *svlan_encapsulated_proto
= htons(ETH_P_8021Q
);
2570 vlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2571 *vlan_tci
= build_tci(pkt_dev
->vlan_id
,
2574 vlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2575 *vlan_encapsulated_proto
= htons(ETH_P_IP
);
2578 skb
->network_header
= skb
->tail
;
2579 skb
->transport_header
= skb
->network_header
+ sizeof(struct iphdr
);
2580 skb_put(skb
, sizeof(struct iphdr
) + sizeof(struct udphdr
));
2581 skb_set_queue_mapping(skb
, queue_map
);
2583 udph
= udp_hdr(skb
);
2585 memcpy(eth
, pkt_dev
->hh
, 12);
2586 *(__be16
*) & eth
[12] = protocol
;
2588 /* Eth + IPh + UDPh + mpls */
2589 datalen
= pkt_dev
->cur_pkt_size
- 14 - 20 - 8 -
2590 pkt_dev
->pkt_overhead
;
2591 if (datalen
< sizeof(struct pktgen_hdr
))
2592 datalen
= sizeof(struct pktgen_hdr
);
2594 udph
->source
= htons(pkt_dev
->cur_udp_src
);
2595 udph
->dest
= htons(pkt_dev
->cur_udp_dst
);
2596 udph
->len
= htons(datalen
+ 8); /* DATA + udphdr */
2597 udph
->check
= 0; /* No checksum */
2602 iph
->tos
= pkt_dev
->tos
;
2603 iph
->protocol
= IPPROTO_UDP
; /* UDP */
2604 iph
->saddr
= pkt_dev
->cur_saddr
;
2605 iph
->daddr
= pkt_dev
->cur_daddr
;
2607 iplen
= 20 + 8 + datalen
;
2608 iph
->tot_len
= htons(iplen
);
2610 iph
->check
= ip_fast_csum((void *)iph
, iph
->ihl
);
2611 skb
->protocol
= protocol
;
2612 skb
->mac_header
= (skb
->network_header
- ETH_HLEN
-
2613 pkt_dev
->pkt_overhead
);
2615 skb
->pkt_type
= PACKET_HOST
;
2617 if (pkt_dev
->nfrags
<= 0)
2618 pgh
= (struct pktgen_hdr
*)skb_put(skb
, datalen
);
2620 int frags
= pkt_dev
->nfrags
;
2623 pgh
= (struct pktgen_hdr
*)(((char *)(udph
)) + 8);
2625 if (frags
> MAX_SKB_FRAGS
)
2626 frags
= MAX_SKB_FRAGS
;
2627 if (datalen
> frags
* PAGE_SIZE
) {
2628 skb_put(skb
, datalen
- frags
* PAGE_SIZE
);
2629 datalen
= frags
* PAGE_SIZE
;
2633 while (datalen
> 0) {
2634 struct page
*page
= alloc_pages(GFP_KERNEL
, 0);
2635 skb_shinfo(skb
)->frags
[i
].page
= page
;
2636 skb_shinfo(skb
)->frags
[i
].page_offset
= 0;
2637 skb_shinfo(skb
)->frags
[i
].size
=
2638 (datalen
< PAGE_SIZE
? datalen
: PAGE_SIZE
);
2639 datalen
-= skb_shinfo(skb
)->frags
[i
].size
;
2640 skb
->len
+= skb_shinfo(skb
)->frags
[i
].size
;
2641 skb
->data_len
+= skb_shinfo(skb
)->frags
[i
].size
;
2643 skb_shinfo(skb
)->nr_frags
= i
;
2652 rem
= skb_shinfo(skb
)->frags
[i
- 1].size
/ 2;
2656 skb_shinfo(skb
)->frags
[i
- 1].size
-= rem
;
2658 skb_shinfo(skb
)->frags
[i
] =
2659 skb_shinfo(skb
)->frags
[i
- 1];
2660 get_page(skb_shinfo(skb
)->frags
[i
].page
);
2661 skb_shinfo(skb
)->frags
[i
].page
=
2662 skb_shinfo(skb
)->frags
[i
- 1].page
;
2663 skb_shinfo(skb
)->frags
[i
].page_offset
+=
2664 skb_shinfo(skb
)->frags
[i
- 1].size
;
2665 skb_shinfo(skb
)->frags
[i
].size
= rem
;
2667 skb_shinfo(skb
)->nr_frags
= i
;
2671 /* Stamp the time, and sequence number, convert them to network byte order */
2674 struct timeval timestamp
;
2676 pgh
->pgh_magic
= htonl(PKTGEN_MAGIC
);
2677 pgh
->seq_num
= htonl(pkt_dev
->seq_num
);
2679 do_gettimeofday(×tamp
);
2680 pgh
->tv_sec
= htonl(timestamp
.tv_sec
);
2681 pgh
->tv_usec
= htonl(timestamp
.tv_usec
);
2685 if (!process_ipsec(pkt_dev
, skb
, protocol
))
2693 * scan_ip6, fmt_ip taken from dietlibc-0.21
2694 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2696 * Slightly modified for kernel.
2697 * Should be candidate for net/ipv4/utils.c
2701 static unsigned int scan_ip6(const char *s
, char ip
[16])
2704 unsigned int len
= 0;
2707 unsigned int prefixlen
= 0;
2708 unsigned int suffixlen
= 0;
2712 for (i
= 0; i
< 16; i
++)
2718 if (s
[1] == ':') { /* Found "::", skip to part 2 */
2726 u
= simple_strtoul(s
, &pos
, 16);
2730 if (prefixlen
== 12 && s
[i
] == '.') {
2732 /* the last 4 bytes may be written as IPv4 address */
2735 memcpy((struct in_addr
*)(ip
+ 12), &tmp
, sizeof(tmp
));
2738 ip
[prefixlen
++] = (u
>> 8);
2739 ip
[prefixlen
++] = (u
& 255);
2742 if (prefixlen
== 16)
2746 /* part 2, after "::" */
2753 } else if (suffixlen
!= 0)
2756 u
= simple_strtol(s
, &pos
, 16);
2763 if (suffixlen
+ prefixlen
<= 12 && s
[i
] == '.') {
2765 memcpy((struct in_addr
*)(suffix
+ suffixlen
), &tmp
,
2771 suffix
[suffixlen
++] = (u
>> 8);
2772 suffix
[suffixlen
++] = (u
& 255);
2775 if (prefixlen
+ suffixlen
== 16)
2778 for (i
= 0; i
< suffixlen
; i
++)
2779 ip
[16 - suffixlen
+ i
] = suffix
[i
];
2783 static char tohex(char hexdigit
)
2785 return hexdigit
> 9 ? hexdigit
+ 'a' - 10 : hexdigit
+ '0';
2788 static int fmt_xlong(char *s
, unsigned int i
)
2791 *s
= tohex((i
>> 12) & 0xf);
2792 if (s
!= bak
|| *s
!= '0')
2794 *s
= tohex((i
>> 8) & 0xf);
2795 if (s
!= bak
|| *s
!= '0')
2797 *s
= tohex((i
>> 4) & 0xf);
2798 if (s
!= bak
|| *s
!= '0')
2800 *s
= tohex(i
& 0xf);
2804 static unsigned int fmt_ip6(char *s
, const char ip
[16])
2809 unsigned int compressing
;
2814 for (j
= 0; j
< 16; j
+= 2) {
2816 #ifdef V4MAPPEDPREFIX
2817 if (j
== 12 && !memcmp(ip
, V4mappedprefix
, 12)) {
2818 inet_ntoa_r(*(struct in_addr
*)(ip
+ 12), s
);
2823 temp
= ((unsigned long)(unsigned char)ip
[j
] << 8) +
2824 (unsigned long)(unsigned char)ip
[j
+ 1];
2839 i
= fmt_xlong(s
, temp
);
2856 static struct sk_buff
*fill_packet_ipv6(struct net_device
*odev
,
2857 struct pktgen_dev
*pkt_dev
)
2859 struct sk_buff
*skb
= NULL
;
2861 struct udphdr
*udph
;
2863 struct ipv6hdr
*iph
;
2864 struct pktgen_hdr
*pgh
= NULL
;
2865 __be16 protocol
= htons(ETH_P_IPV6
);
2867 __be16
*vlan_tci
= NULL
; /* Encapsulates priority and VLAN ID */
2868 __be16
*vlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for VLAN tag */
2869 __be16
*svlan_tci
= NULL
; /* Encapsulates priority and SVLAN ID */
2870 __be16
*svlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for SVLAN tag */
2873 if (pkt_dev
->nr_labels
)
2874 protocol
= htons(ETH_P_MPLS_UC
);
2876 if (pkt_dev
->vlan_id
!= 0xffff)
2877 protocol
= htons(ETH_P_8021Q
);
2879 /* Update any of the values, used when we're incrementing various
2882 queue_map
= pkt_dev
->cur_queue_map
;
2883 mod_cur_headers(pkt_dev
);
2885 skb
= alloc_skb(pkt_dev
->cur_pkt_size
+ 64 + 16 +
2886 pkt_dev
->pkt_overhead
, GFP_ATOMIC
);
2888 sprintf(pkt_dev
->result
, "No memory");
2892 skb_reserve(skb
, 16);
2894 /* Reserve for ethernet and IP header */
2895 eth
= (__u8
*) skb_push(skb
, 14);
2896 mpls
= (__be32
*)skb_put(skb
, pkt_dev
->nr_labels
*sizeof(__u32
));
2897 if (pkt_dev
->nr_labels
)
2898 mpls_push(mpls
, pkt_dev
);
2900 if (pkt_dev
->vlan_id
!= 0xffff) {
2901 if (pkt_dev
->svlan_id
!= 0xffff) {
2902 svlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2903 *svlan_tci
= build_tci(pkt_dev
->svlan_id
,
2906 svlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2907 *svlan_encapsulated_proto
= htons(ETH_P_8021Q
);
2909 vlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2910 *vlan_tci
= build_tci(pkt_dev
->vlan_id
,
2913 vlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2914 *vlan_encapsulated_proto
= htons(ETH_P_IPV6
);
2917 skb
->network_header
= skb
->tail
;
2918 skb
->transport_header
= skb
->network_header
+ sizeof(struct ipv6hdr
);
2919 skb_put(skb
, sizeof(struct ipv6hdr
) + sizeof(struct udphdr
));
2920 skb_set_queue_mapping(skb
, queue_map
);
2921 iph
= ipv6_hdr(skb
);
2922 udph
= udp_hdr(skb
);
2924 memcpy(eth
, pkt_dev
->hh
, 12);
2925 *(__be16
*) & eth
[12] = protocol
;
2927 /* Eth + IPh + UDPh + mpls */
2928 datalen
= pkt_dev
->cur_pkt_size
- 14 -
2929 sizeof(struct ipv6hdr
) - sizeof(struct udphdr
) -
2930 pkt_dev
->pkt_overhead
;
2932 if (datalen
< sizeof(struct pktgen_hdr
)) {
2933 datalen
= sizeof(struct pktgen_hdr
);
2934 if (net_ratelimit())
2935 printk(KERN_INFO
"pktgen: increased datalen to %d\n",
2939 udph
->source
= htons(pkt_dev
->cur_udp_src
);
2940 udph
->dest
= htons(pkt_dev
->cur_udp_dst
);
2941 udph
->len
= htons(datalen
+ sizeof(struct udphdr
));
2942 udph
->check
= 0; /* No checksum */
2944 *(__be32
*) iph
= htonl(0x60000000); /* Version + flow */
2946 if (pkt_dev
->traffic_class
) {
2947 /* Version + traffic class + flow (0) */
2948 *(__be32
*)iph
|= htonl(0x60000000 | (pkt_dev
->traffic_class
<< 20));
2951 iph
->hop_limit
= 32;
2953 iph
->payload_len
= htons(sizeof(struct udphdr
) + datalen
);
2954 iph
->nexthdr
= IPPROTO_UDP
;
2956 ipv6_addr_copy(&iph
->daddr
, &pkt_dev
->cur_in6_daddr
);
2957 ipv6_addr_copy(&iph
->saddr
, &pkt_dev
->cur_in6_saddr
);
2959 skb
->mac_header
= (skb
->network_header
- ETH_HLEN
-
2960 pkt_dev
->pkt_overhead
);
2961 skb
->protocol
= protocol
;
2963 skb
->pkt_type
= PACKET_HOST
;
2965 if (pkt_dev
->nfrags
<= 0)
2966 pgh
= (struct pktgen_hdr
*)skb_put(skb
, datalen
);
2968 int frags
= pkt_dev
->nfrags
;
2971 pgh
= (struct pktgen_hdr
*)(((char *)(udph
)) + 8);
2973 if (frags
> MAX_SKB_FRAGS
)
2974 frags
= MAX_SKB_FRAGS
;
2975 if (datalen
> frags
* PAGE_SIZE
) {
2976 skb_put(skb
, datalen
- frags
* PAGE_SIZE
);
2977 datalen
= frags
* PAGE_SIZE
;
2981 while (datalen
> 0) {
2982 struct page
*page
= alloc_pages(GFP_KERNEL
, 0);
2983 skb_shinfo(skb
)->frags
[i
].page
= page
;
2984 skb_shinfo(skb
)->frags
[i
].page_offset
= 0;
2985 skb_shinfo(skb
)->frags
[i
].size
=
2986 (datalen
< PAGE_SIZE
? datalen
: PAGE_SIZE
);
2987 datalen
-= skb_shinfo(skb
)->frags
[i
].size
;
2988 skb
->len
+= skb_shinfo(skb
)->frags
[i
].size
;
2989 skb
->data_len
+= skb_shinfo(skb
)->frags
[i
].size
;
2991 skb_shinfo(skb
)->nr_frags
= i
;
3000 rem
= skb_shinfo(skb
)->frags
[i
- 1].size
/ 2;
3004 skb_shinfo(skb
)->frags
[i
- 1].size
-= rem
;
3006 skb_shinfo(skb
)->frags
[i
] =
3007 skb_shinfo(skb
)->frags
[i
- 1];
3008 get_page(skb_shinfo(skb
)->frags
[i
].page
);
3009 skb_shinfo(skb
)->frags
[i
].page
=
3010 skb_shinfo(skb
)->frags
[i
- 1].page
;
3011 skb_shinfo(skb
)->frags
[i
].page_offset
+=
3012 skb_shinfo(skb
)->frags
[i
- 1].size
;
3013 skb_shinfo(skb
)->frags
[i
].size
= rem
;
3015 skb_shinfo(skb
)->nr_frags
= i
;
3019 /* Stamp the time, and sequence number, convert them to network byte order */
3020 /* should we update cloned packets too ? */
3022 struct timeval timestamp
;
3024 pgh
->pgh_magic
= htonl(PKTGEN_MAGIC
);
3025 pgh
->seq_num
= htonl(pkt_dev
->seq_num
);
3027 do_gettimeofday(×tamp
);
3028 pgh
->tv_sec
= htonl(timestamp
.tv_sec
);
3029 pgh
->tv_usec
= htonl(timestamp
.tv_usec
);
3031 /* pkt_dev->seq_num++; FF: you really mean this? */
3036 static inline struct sk_buff
*fill_packet(struct net_device
*odev
,
3037 struct pktgen_dev
*pkt_dev
)
3039 if (pkt_dev
->flags
& F_IPV6
)
3040 return fill_packet_ipv6(odev
, pkt_dev
);
3042 return fill_packet_ipv4(odev
, pkt_dev
);
3045 static void pktgen_clear_counters(struct pktgen_dev
*pkt_dev
)
3047 pkt_dev
->seq_num
= 1;
3048 pkt_dev
->idle_acc
= 0;
3050 pkt_dev
->tx_bytes
= 0;
3051 pkt_dev
->errors
= 0;
3054 /* Set up structure for sending pkts, clear counters */
3056 static void pktgen_run(struct pktgen_thread
*t
)
3058 struct pktgen_dev
*pkt_dev
;
3061 pr_debug("pktgen: entering pktgen_run. %p\n", t
);
3064 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3067 * setup odev and create initial packet.
3069 pktgen_setup_inject(pkt_dev
);
3071 if (pkt_dev
->odev
) {
3072 pktgen_clear_counters(pkt_dev
);
3073 pkt_dev
->running
= 1; /* Cranke yeself! */
3074 pkt_dev
->skb
= NULL
;
3075 pkt_dev
->started_at
= getCurUs();
3076 pkt_dev
->next_tx_us
= getCurUs(); /* Transmit immediately */
3077 pkt_dev
->next_tx_ns
= 0;
3078 set_pkt_overhead(pkt_dev
);
3080 strcpy(pkt_dev
->result
, "Starting");
3083 strcpy(pkt_dev
->result
, "Error starting");
3087 t
->control
&= ~(T_STOP
);
3090 static void pktgen_stop_all_threads_ifs(void)
3092 struct pktgen_thread
*t
;
3094 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
3096 mutex_lock(&pktgen_thread_lock
);
3098 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3099 t
->control
|= T_STOP
;
3101 mutex_unlock(&pktgen_thread_lock
);
3104 static int thread_is_running(struct pktgen_thread
*t
)
3106 struct pktgen_dev
*pkt_dev
;
3109 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
3110 if (pkt_dev
->running
) {
3117 static int pktgen_wait_thread_run(struct pktgen_thread
*t
)
3121 while (thread_is_running(t
)) {
3125 msleep_interruptible(100);
3127 if (signal_pending(current
))
3137 static int pktgen_wait_all_threads_run(void)
3139 struct pktgen_thread
*t
;
3142 mutex_lock(&pktgen_thread_lock
);
3144 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
3145 sig
= pktgen_wait_thread_run(t
);
3151 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3152 t
->control
|= (T_STOP
);
3154 mutex_unlock(&pktgen_thread_lock
);
3158 static void pktgen_run_all_threads(void)
3160 struct pktgen_thread
*t
;
3162 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
3164 mutex_lock(&pktgen_thread_lock
);
3166 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3167 t
->control
|= (T_RUN
);
3169 mutex_unlock(&pktgen_thread_lock
);
3171 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
3173 pktgen_wait_all_threads_run();
3176 static void show_results(struct pktgen_dev
*pkt_dev
, int nr_frags
)
3178 __u64 total_us
, bps
, mbps
, pps
, idle
;
3179 char *p
= pkt_dev
->result
;
3181 total_us
= pkt_dev
->stopped_at
- pkt_dev
->started_at
;
3183 idle
= pkt_dev
->idle_acc
;
3185 p
+= sprintf(p
, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
3186 (unsigned long long)total_us
,
3187 (unsigned long long)(total_us
- idle
),
3188 (unsigned long long)idle
,
3189 (unsigned long long)pkt_dev
->sofar
,
3190 pkt_dev
->cur_pkt_size
, nr_frags
);
3192 pps
= pkt_dev
->sofar
* USEC_PER_SEC
;
3194 while ((total_us
>> 32) != 0) {
3199 do_div(pps
, total_us
);
3201 bps
= pps
* 8 * pkt_dev
->cur_pkt_size
;
3204 do_div(mbps
, 1000000);
3205 p
+= sprintf(p
, " %llupps %lluMb/sec (%llubps) errors: %llu",
3206 (unsigned long long)pps
,
3207 (unsigned long long)mbps
,
3208 (unsigned long long)bps
,
3209 (unsigned long long)pkt_dev
->errors
);
3212 /* Set stopped-at timer, remove from running list, do counters & statistics */
3214 static int pktgen_stop_device(struct pktgen_dev
*pkt_dev
)
3216 int nr_frags
= pkt_dev
->skb
? skb_shinfo(pkt_dev
->skb
)->nr_frags
: -1;
3218 if (!pkt_dev
->running
) {
3219 printk(KERN_WARNING
"pktgen: interface: %s is already "
3220 "stopped\n", pkt_dev
->odev
->name
);
3224 pkt_dev
->stopped_at
= getCurUs();
3225 pkt_dev
->running
= 0;
3227 show_results(pkt_dev
, nr_frags
);
3232 static struct pktgen_dev
*next_to_run(struct pktgen_thread
*t
)
3234 struct pktgen_dev
*pkt_dev
, *best
= NULL
;
3238 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3239 if (!pkt_dev
->running
)
3243 else if (pkt_dev
->next_tx_us
< best
->next_tx_us
)
3250 static void pktgen_stop(struct pktgen_thread
*t
)
3252 struct pktgen_dev
*pkt_dev
;
3254 pr_debug("pktgen: entering pktgen_stop\n");
3258 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3259 pktgen_stop_device(pkt_dev
);
3261 kfree_skb(pkt_dev
->skb
);
3263 pkt_dev
->skb
= NULL
;
3270 * one of our devices needs to be removed - find it
3273 static void pktgen_rem_one_if(struct pktgen_thread
*t
)
3275 struct list_head
*q
, *n
;
3276 struct pktgen_dev
*cur
;
3278 pr_debug("pktgen: entering pktgen_rem_one_if\n");
3282 list_for_each_safe(q
, n
, &t
->if_list
) {
3283 cur
= list_entry(q
, struct pktgen_dev
, list
);
3285 if (!cur
->removal_mark
)
3289 kfree_skb(cur
->skb
);
3292 pktgen_remove_device(t
, cur
);
3300 static void pktgen_rem_all_ifs(struct pktgen_thread
*t
)
3302 struct list_head
*q
, *n
;
3303 struct pktgen_dev
*cur
;
3305 /* Remove all devices, free mem */
3307 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
3310 list_for_each_safe(q
, n
, &t
->if_list
) {
3311 cur
= list_entry(q
, struct pktgen_dev
, list
);
3314 kfree_skb(cur
->skb
);
3317 pktgen_remove_device(t
, cur
);
3323 static void pktgen_rem_thread(struct pktgen_thread
*t
)
3325 /* Remove from the thread list */
3327 remove_proc_entry(t
->tsk
->comm
, pg_proc_dir
);
3329 mutex_lock(&pktgen_thread_lock
);
3331 list_del(&t
->th_list
);
3333 mutex_unlock(&pktgen_thread_lock
);
3336 static __inline__
void pktgen_xmit(struct pktgen_dev
*pkt_dev
)
3338 struct net_device
*odev
= NULL
;
3339 struct netdev_queue
*txq
;
3340 __u64 idle_start
= 0;
3344 odev
= pkt_dev
->odev
;
3346 if (pkt_dev
->delay_us
|| pkt_dev
->delay_ns
) {
3350 if (now
< pkt_dev
->next_tx_us
)
3351 spin(pkt_dev
, pkt_dev
->next_tx_us
);
3353 /* This is max DELAY, this has special meaning of
3356 if (pkt_dev
->delay_us
== 0x7FFFFFFF) {
3357 pkt_dev
->next_tx_us
= getCurUs() + pkt_dev
->delay_us
;
3358 pkt_dev
->next_tx_ns
= pkt_dev
->delay_ns
;
3363 if (!pkt_dev
->skb
) {
3364 set_cur_queue_map(pkt_dev
);
3365 queue_map
= pkt_dev
->cur_queue_map
;
3367 queue_map
= skb_get_queue_mapping(pkt_dev
->skb
);
3370 txq
= netdev_get_tx_queue(odev
, queue_map
);
3371 if (netif_tx_queue_stopped(txq
) ||
3372 netif_tx_queue_frozen(txq
) ||
3374 idle_start
= getCurUs();
3376 if (!netif_running(odev
)) {
3377 pktgen_stop_device(pkt_dev
);
3379 kfree_skb(pkt_dev
->skb
);
3380 pkt_dev
->skb
= NULL
;
3386 pkt_dev
->idle_acc
+= getCurUs() - idle_start
;
3388 if (netif_tx_queue_stopped(txq
) ||
3389 netif_tx_queue_frozen(txq
)) {
3390 pkt_dev
->next_tx_us
= getCurUs(); /* TODO */
3391 pkt_dev
->next_tx_ns
= 0;
3392 goto out
; /* Try the next interface */
3396 if (pkt_dev
->last_ok
|| !pkt_dev
->skb
) {
3397 if ((++pkt_dev
->clone_count
>= pkt_dev
->clone_skb
)
3398 || (!pkt_dev
->skb
)) {
3399 /* build a new pkt */
3401 kfree_skb(pkt_dev
->skb
);
3403 pkt_dev
->skb
= fill_packet(odev
, pkt_dev
);
3404 if (pkt_dev
->skb
== NULL
) {
3405 printk(KERN_ERR
"pktgen: ERROR: couldn't "
3406 "allocate skb in fill_packet.\n");
3408 pkt_dev
->clone_count
--; /* back out increment, OOM */
3411 pkt_dev
->allocated_skbs
++;
3412 pkt_dev
->clone_count
= 0; /* reset counter */
3416 /* fill_packet() might have changed the queue */
3417 queue_map
= skb_get_queue_mapping(pkt_dev
->skb
);
3418 txq
= netdev_get_tx_queue(odev
, queue_map
);
3420 __netif_tx_lock_bh(txq
);
3421 if (!netif_tx_queue_stopped(txq
) &&
3422 !netif_tx_queue_frozen(txq
)) {
3424 atomic_inc(&(pkt_dev
->skb
->users
));
3426 ret
= odev
->hard_start_xmit(pkt_dev
->skb
, odev
);
3427 if (likely(ret
== NETDEV_TX_OK
)) {
3428 pkt_dev
->last_ok
= 1;
3431 pkt_dev
->tx_bytes
+= pkt_dev
->cur_pkt_size
;
3433 } else if (ret
== NETDEV_TX_LOCKED
3434 && (odev
->features
& NETIF_F_LLTX
)) {
3437 } else { /* Retry it next time */
3439 atomic_dec(&(pkt_dev
->skb
->users
));
3441 if (debug
&& net_ratelimit())
3442 printk(KERN_INFO
"pktgen: Hard xmit error\n");
3445 pkt_dev
->last_ok
= 0;
3448 pkt_dev
->next_tx_us
= getCurUs();
3449 pkt_dev
->next_tx_ns
= 0;
3451 pkt_dev
->next_tx_us
+= pkt_dev
->delay_us
;
3452 pkt_dev
->next_tx_ns
+= pkt_dev
->delay_ns
;
3454 if (pkt_dev
->next_tx_ns
> 1000) {
3455 pkt_dev
->next_tx_us
++;
3456 pkt_dev
->next_tx_ns
-= 1000;
3460 else { /* Retry it next time */
3461 pkt_dev
->last_ok
= 0;
3462 pkt_dev
->next_tx_us
= getCurUs(); /* TODO */
3463 pkt_dev
->next_tx_ns
= 0;
3466 __netif_tx_unlock_bh(txq
);
3468 /* If pkt_dev->count is zero, then run forever */
3469 if ((pkt_dev
->count
!= 0) && (pkt_dev
->sofar
>= pkt_dev
->count
)) {
3470 if (atomic_read(&(pkt_dev
->skb
->users
)) != 1) {
3471 idle_start
= getCurUs();
3472 while (atomic_read(&(pkt_dev
->skb
->users
)) != 1) {
3473 if (signal_pending(current
)) {
3478 pkt_dev
->idle_acc
+= getCurUs() - idle_start
;
3481 /* Done with this */
3482 pktgen_stop_device(pkt_dev
);
3484 kfree_skb(pkt_dev
->skb
);
3485 pkt_dev
->skb
= NULL
;
3491 * Main loop of the thread goes here
3494 static int pktgen_thread_worker(void *arg
)
3497 struct pktgen_thread
*t
= arg
;
3498 struct pktgen_dev
*pkt_dev
= NULL
;
3501 BUG_ON(smp_processor_id() != cpu
);
3503 init_waitqueue_head(&t
->queue
);
3504 complete(&t
->start_done
);
3506 pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu
, task_pid_nr(current
));
3508 set_current_state(TASK_INTERRUPTIBLE
);
3512 while (!kthread_should_stop()) {
3513 pkt_dev
= next_to_run(t
);
3516 (t
->control
& (T_STOP
| T_RUN
| T_REMDEVALL
| T_REMDEV
))
3518 prepare_to_wait(&(t
->queue
), &wait
,
3519 TASK_INTERRUPTIBLE
);
3520 schedule_timeout(HZ
/ 10);
3521 finish_wait(&(t
->queue
), &wait
);
3524 __set_current_state(TASK_RUNNING
);
3527 pktgen_xmit(pkt_dev
);
3529 if (t
->control
& T_STOP
) {
3531 t
->control
&= ~(T_STOP
);
3534 if (t
->control
& T_RUN
) {
3536 t
->control
&= ~(T_RUN
);
3539 if (t
->control
& T_REMDEVALL
) {
3540 pktgen_rem_all_ifs(t
);
3541 t
->control
&= ~(T_REMDEVALL
);
3544 if (t
->control
& T_REMDEV
) {
3545 pktgen_rem_one_if(t
);
3546 t
->control
&= ~(T_REMDEV
);
3551 set_current_state(TASK_INTERRUPTIBLE
);
3554 pr_debug("pktgen: %s stopping all device\n", t
->tsk
->comm
);
3557 pr_debug("pktgen: %s removing all device\n", t
->tsk
->comm
);
3558 pktgen_rem_all_ifs(t
);
3560 pr_debug("pktgen: %s removing thread.\n", t
->tsk
->comm
);
3561 pktgen_rem_thread(t
);
3566 static struct pktgen_dev
*pktgen_find_dev(struct pktgen_thread
*t
,
3569 struct pktgen_dev
*p
, *pkt_dev
= NULL
;
3572 list_for_each_entry(p
, &t
->if_list
, list
)
3573 if (strncmp(p
->odev
->name
, ifname
, IFNAMSIZ
) == 0) {
3579 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname
, pkt_dev
);
3584 * Adds a dev at front of if_list.
3587 static int add_dev_to_thread(struct pktgen_thread
*t
,
3588 struct pktgen_dev
*pkt_dev
)
3594 if (pkt_dev
->pg_thread
) {
3595 printk(KERN_ERR
"pktgen: ERROR: already assigned "
3601 list_add(&pkt_dev
->list
, &t
->if_list
);
3602 pkt_dev
->pg_thread
= t
;
3603 pkt_dev
->running
= 0;
3610 /* Called under thread lock */
3612 static int pktgen_add_device(struct pktgen_thread
*t
, const char *ifname
)
3614 struct pktgen_dev
*pkt_dev
;
3617 /* We don't allow a device to be on several threads */
3619 pkt_dev
= __pktgen_NN_threads(ifname
, FIND
);
3621 printk(KERN_ERR
"pktgen: ERROR: interface already used.\n");
3625 pkt_dev
= kzalloc(sizeof(struct pktgen_dev
), GFP_KERNEL
);
3629 pkt_dev
->flows
= vmalloc(MAX_CFLOWS
* sizeof(struct flow_state
));
3630 if (pkt_dev
->flows
== NULL
) {
3634 memset(pkt_dev
->flows
, 0, MAX_CFLOWS
* sizeof(struct flow_state
));
3636 pkt_dev
->removal_mark
= 0;
3637 pkt_dev
->min_pkt_size
= ETH_ZLEN
;
3638 pkt_dev
->max_pkt_size
= ETH_ZLEN
;
3639 pkt_dev
->nfrags
= 0;
3640 pkt_dev
->clone_skb
= pg_clone_skb_d
;
3641 pkt_dev
->delay_us
= pg_delay_d
/ 1000;
3642 pkt_dev
->delay_ns
= pg_delay_d
% 1000;
3643 pkt_dev
->count
= pg_count_d
;
3645 pkt_dev
->udp_src_min
= 9; /* sink port */
3646 pkt_dev
->udp_src_max
= 9;
3647 pkt_dev
->udp_dst_min
= 9;
3648 pkt_dev
->udp_dst_max
= 9;
3650 pkt_dev
->vlan_p
= 0;
3651 pkt_dev
->vlan_cfi
= 0;
3652 pkt_dev
->vlan_id
= 0xffff;
3653 pkt_dev
->svlan_p
= 0;
3654 pkt_dev
->svlan_cfi
= 0;
3655 pkt_dev
->svlan_id
= 0xffff;
3657 err
= pktgen_setup_dev(pkt_dev
, ifname
);
3661 pkt_dev
->entry
= proc_create_data(ifname
, 0600, pg_proc_dir
,
3662 &pktgen_if_fops
, pkt_dev
);
3663 if (!pkt_dev
->entry
) {
3664 printk(KERN_ERR
"pktgen: cannot create %s/%s procfs entry.\n",
3665 PG_PROC_DIR
, ifname
);
3670 pkt_dev
->ipsmode
= XFRM_MODE_TRANSPORT
;
3671 pkt_dev
->ipsproto
= IPPROTO_ESP
;
3674 return add_dev_to_thread(t
, pkt_dev
);
3676 dev_put(pkt_dev
->odev
);
3682 vfree(pkt_dev
->flows
);
3687 static int __init
pktgen_create_thread(int cpu
)
3689 struct pktgen_thread
*t
;
3690 struct proc_dir_entry
*pe
;
3691 struct task_struct
*p
;
3693 t
= kzalloc(sizeof(struct pktgen_thread
), GFP_KERNEL
);
3695 printk(KERN_ERR
"pktgen: ERROR: out of memory, can't "
3696 "create new thread.\n");
3700 spin_lock_init(&t
->if_lock
);
3703 INIT_LIST_HEAD(&t
->if_list
);
3705 list_add_tail(&t
->th_list
, &pktgen_threads
);
3706 init_completion(&t
->start_done
);
3708 p
= kthread_create(pktgen_thread_worker
, t
, "kpktgend_%d", cpu
);
3710 printk(KERN_ERR
"pktgen: kernel_thread() failed "
3711 "for cpu %d\n", t
->cpu
);
3712 list_del(&t
->th_list
);
3716 kthread_bind(p
, cpu
);
3719 pe
= proc_create_data(t
->tsk
->comm
, 0600, pg_proc_dir
,
3720 &pktgen_thread_fops
, t
);
3722 printk(KERN_ERR
"pktgen: cannot create %s/%s procfs entry.\n",
3723 PG_PROC_DIR
, t
->tsk
->comm
);
3725 list_del(&t
->th_list
);
3731 wait_for_completion(&t
->start_done
);
3737 * Removes a device from the thread if_list.
3739 static void _rem_dev_from_if_list(struct pktgen_thread
*t
,
3740 struct pktgen_dev
*pkt_dev
)
3742 struct list_head
*q
, *n
;
3743 struct pktgen_dev
*p
;
3745 list_for_each_safe(q
, n
, &t
->if_list
) {
3746 p
= list_entry(q
, struct pktgen_dev
, list
);
3752 static int pktgen_remove_device(struct pktgen_thread
*t
,
3753 struct pktgen_dev
*pkt_dev
)
3756 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev
);
3758 if (pkt_dev
->running
) {
3759 printk(KERN_WARNING
"pktgen: WARNING: trying to remove a "
3760 "running interface, stopping it now.\n");
3761 pktgen_stop_device(pkt_dev
);
3764 /* Dis-associate from the interface */
3766 if (pkt_dev
->odev
) {
3767 dev_put(pkt_dev
->odev
);
3768 pkt_dev
->odev
= NULL
;
3771 /* And update the thread if_list */
3773 _rem_dev_from_if_list(t
, pkt_dev
);
3776 remove_proc_entry(pkt_dev
->entry
->name
, pg_proc_dir
);
3782 vfree(pkt_dev
->flows
);
3787 static int __init
pg_init(void)
3790 struct proc_dir_entry
*pe
;
3792 printk(KERN_INFO
"%s", version
);
3794 pg_proc_dir
= proc_mkdir(PG_PROC_DIR
, init_net
.proc_net
);
3797 pg_proc_dir
->owner
= THIS_MODULE
;
3799 pe
= proc_create(PGCTRL
, 0600, pg_proc_dir
, &pktgen_fops
);
3801 printk(KERN_ERR
"pktgen: ERROR: cannot create %s "
3802 "procfs entry.\n", PGCTRL
);
3803 proc_net_remove(&init_net
, PG_PROC_DIR
);
3807 /* Register us to receive netdevice events */
3808 register_netdevice_notifier(&pktgen_notifier_block
);
3810 for_each_online_cpu(cpu
) {
3813 err
= pktgen_create_thread(cpu
);
3815 printk(KERN_WARNING
"pktgen: WARNING: Cannot create "
3816 "thread for cpu %d (%d)\n", cpu
, err
);
3819 if (list_empty(&pktgen_threads
)) {
3820 printk(KERN_ERR
"pktgen: ERROR: Initialization failed for "
3822 unregister_netdevice_notifier(&pktgen_notifier_block
);
3823 remove_proc_entry(PGCTRL
, pg_proc_dir
);
3824 proc_net_remove(&init_net
, PG_PROC_DIR
);
3831 static void __exit
pg_cleanup(void)
3833 struct pktgen_thread
*t
;
3834 struct list_head
*q
, *n
;
3835 wait_queue_head_t queue
;
3836 init_waitqueue_head(&queue
);
3838 /* Stop all interfaces & threads */
3840 list_for_each_safe(q
, n
, &pktgen_threads
) {
3841 t
= list_entry(q
, struct pktgen_thread
, th_list
);
3842 kthread_stop(t
->tsk
);
3846 /* Un-register us from receiving netdevice events */
3847 unregister_netdevice_notifier(&pktgen_notifier_block
);
3849 /* Clean up proc file system */
3850 remove_proc_entry(PGCTRL
, pg_proc_dir
);
3851 proc_net_remove(&init_net
, PG_PROC_DIR
);
3854 module_init(pg_init
);
3855 module_exit(pg_cleanup
);
3857 MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
3858 MODULE_DESCRIPTION("Packet Generator tool");
3859 MODULE_LICENSE("GPL");
3860 module_param(pg_count_d
, int, 0);
3861 module_param(pg_delay_d
, int, 0);
3862 module_param(pg_clone_skb_d
, int, 0);
3863 module_param(debug
, int, 0);