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>
119 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
121 #include <linux/sys.h>
122 #include <linux/types.h>
123 #include <linux/module.h>
124 #include <linux/moduleparam.h>
125 #include <linux/kernel.h>
126 #include <linux/mutex.h>
127 #include <linux/sched.h>
128 #include <linux/slab.h>
129 #include <linux/vmalloc.h>
130 #include <linux/unistd.h>
131 #include <linux/string.h>
132 #include <linux/ptrace.h>
133 #include <linux/errno.h>
134 #include <linux/ioport.h>
135 #include <linux/interrupt.h>
136 #include <linux/capability.h>
137 #include <linux/hrtimer.h>
138 #include <linux/freezer.h>
139 #include <linux/delay.h>
140 #include <linux/timer.h>
141 #include <linux/list.h>
142 #include <linux/init.h>
143 #include <linux/skbuff.h>
144 #include <linux/netdevice.h>
145 #include <linux/inet.h>
146 #include <linux/inetdevice.h>
147 #include <linux/rtnetlink.h>
148 #include <linux/if_arp.h>
149 #include <linux/if_vlan.h>
150 #include <linux/in.h>
151 #include <linux/ip.h>
152 #include <linux/ipv6.h>
153 #include <linux/udp.h>
154 #include <linux/proc_fs.h>
155 #include <linux/seq_file.h>
156 #include <linux/wait.h>
157 #include <linux/etherdevice.h>
158 #include <linux/kthread.h>
159 #include <net/net_namespace.h>
160 #include <net/checksum.h>
161 #include <net/ipv6.h>
162 #include <net/addrconf.h>
164 #include <net/xfrm.h>
166 #include <asm/byteorder.h>
167 #include <linux/rcupdate.h>
168 #include <linux/bitops.h>
169 #include <linux/io.h>
170 #include <linux/timex.h>
171 #include <linux/uaccess.h>
173 #include <asm/div64.h> /* do_div */
175 #define VERSION "2.74"
176 #define IP_NAME_SZ 32
177 #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
178 #define MPLS_STACK_BOTTOM htonl(0x00000100)
180 #define func_enter() pr_debug("entering %s\n", __func__);
182 /* Device flag bits */
183 #define F_IPSRC_RND (1<<0) /* IP-Src Random */
184 #define F_IPDST_RND (1<<1) /* IP-Dst Random */
185 #define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
186 #define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
187 #define F_MACSRC_RND (1<<4) /* MAC-Src Random */
188 #define F_MACDST_RND (1<<5) /* MAC-Dst Random */
189 #define F_TXSIZE_RND (1<<6) /* Transmit size is random */
190 #define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
191 #define F_MPLS_RND (1<<8) /* Random MPLS labels */
192 #define F_VID_RND (1<<9) /* Random VLAN ID */
193 #define F_SVID_RND (1<<10) /* Random SVLAN ID */
194 #define F_FLOW_SEQ (1<<11) /* Sequential flows */
195 #define F_IPSEC_ON (1<<12) /* ipsec on for flows */
196 #define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
197 #define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
198 #define F_NODE (1<<15) /* Node memory alloc*/
200 /* Thread control flag bits */
201 #define T_STOP (1<<0) /* Stop run */
202 #define T_RUN (1<<1) /* Start run */
203 #define T_REMDEVALL (1<<2) /* Remove all devs */
204 #define T_REMDEV (1<<3) /* Remove one dev */
206 /* If lock -- can be removed after some work */
207 #define if_lock(t) spin_lock(&(t->if_lock));
208 #define if_unlock(t) spin_unlock(&(t->if_lock));
210 /* Used to help with determining the pkts on receive */
211 #define PKTGEN_MAGIC 0xbe9be955
212 #define PG_PROC_DIR "pktgen"
213 #define PGCTRL "pgctrl"
214 static struct proc_dir_entry
*pg_proc_dir
;
216 #define MAX_CFLOWS 65536
218 #define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
219 #define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
225 struct xfrm_state
*x
;
231 #define F_INIT (1<<0) /* flow has been initialized */
235 * Try to keep frequent/infrequent used vars. separated.
237 struct proc_dir_entry
*entry
; /* proc file */
238 struct pktgen_thread
*pg_thread
;/* the owner */
239 struct list_head list
; /* chaining in the thread's run-queue */
241 int running
; /* if false, the test will stop */
243 /* If min != max, then we will either do a linear iteration, or
244 * we will do a random selection from within the range.
247 int removal_mark
; /* non-zero => the device is marked for
248 * removal by worker thread */
250 int min_pkt_size
; /* = ETH_ZLEN; */
251 int max_pkt_size
; /* = ETH_ZLEN; */
252 int pkt_overhead
; /* overhead for MPLS, VLANs, IPSEC etc */
254 u64 delay
; /* nano-seconds */
256 __u64 count
; /* Default No packets to send */
257 __u64 sofar
; /* How many pkts we've sent so far */
258 __u64 tx_bytes
; /* How many bytes we've transmitted */
259 __u64 errors
; /* Errors when trying to transmit, */
261 /* runtime counters relating to clone_skb */
263 __u64 allocated_skbs
;
265 int last_ok
; /* Was last skb sent?
266 * Or a failed transmit of some sort?
267 * This will keep sequence numbers in order
272 u64 idle_acc
; /* nano-seconds */
277 * Use multiple SKBs during packet gen.
278 * If this number is greater than 1, then
279 * that many copies of the same packet will be
280 * sent before a new packet is allocated.
281 * If you want to send 1024 identical packets
282 * before creating a new packet,
283 * set clone_skb to 1024.
286 char dst_min
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
287 char dst_max
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
288 char src_min
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
289 char src_max
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
291 struct in6_addr in6_saddr
;
292 struct in6_addr in6_daddr
;
293 struct in6_addr cur_in6_daddr
;
294 struct in6_addr cur_in6_saddr
;
296 struct in6_addr min_in6_daddr
;
297 struct in6_addr max_in6_daddr
;
298 struct in6_addr min_in6_saddr
;
299 struct in6_addr max_in6_saddr
;
301 /* If we're doing ranges, random or incremental, then this
302 * defines the min/max for those ranges.
304 __be32 saddr_min
; /* inclusive, source IP address */
305 __be32 saddr_max
; /* exclusive, source IP address */
306 __be32 daddr_min
; /* inclusive, dest IP address */
307 __be32 daddr_max
; /* exclusive, dest IP address */
309 __u16 udp_src_min
; /* inclusive, source UDP port */
310 __u16 udp_src_max
; /* exclusive, source UDP port */
311 __u16 udp_dst_min
; /* inclusive, dest UDP port */
312 __u16 udp_dst_max
; /* exclusive, dest UDP port */
315 __u8 tos
; /* six MSB of (former) IPv4 TOS
316 are for dscp codepoint */
317 __u8 traffic_class
; /* ditto for the (former) Traffic Class in IPv6
318 (see RFC 3260, sec. 4) */
321 unsigned nr_labels
; /* Depth of stack, 0 = no MPLS */
322 __be32 labels
[MAX_MPLS_LABELS
];
324 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
327 __u16 vlan_id
; /* 0xffff means no vlan tag */
331 __u16 svlan_id
; /* 0xffff means no svlan tag */
333 __u32 src_mac_count
; /* How many MACs to iterate through */
334 __u32 dst_mac_count
; /* How many MACs to iterate through */
336 unsigned char dst_mac
[ETH_ALEN
];
337 unsigned char src_mac
[ETH_ALEN
];
339 __u32 cur_dst_mac_offset
;
340 __u32 cur_src_mac_offset
;
352 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
354 We fill in SRC address later
355 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
359 __u16 pad
; /* pad out the hh struct to an even 16 bytes */
361 struct sk_buff
*skb
; /* skb we are to transmit next, used for when we
362 * are transmitting the same one multiple times
364 struct net_device
*odev
; /* The out-going device.
365 * Note that the device should have it's
366 * pg_info pointer pointing back to this
368 * Set when the user specifies the out-going
369 * device name (not when the inject is
370 * started as it used to do.)
373 struct flow_state
*flows
;
374 unsigned cflows
; /* Concurrent flows (config) */
375 unsigned lflow
; /* Flow length (config) */
376 unsigned nflows
; /* accumulated flows (stats) */
377 unsigned curfl
; /* current sequenced flow (state)*/
381 int node
; /* Memory node */
384 __u8 ipsmode
; /* IPSEC mode (config) */
385 __u8 ipsproto
; /* IPSEC type (config) */
397 struct pktgen_thread
{
398 spinlock_t if_lock
; /* for list of devices */
399 struct list_head if_list
; /* All device here */
400 struct list_head th_list
;
401 struct task_struct
*tsk
;
404 /* Field for thread to receive "posted" events terminate,
410 wait_queue_head_t queue
;
411 struct completion start_done
;
417 static inline ktime_t
ktime_now(void)
422 return timespec_to_ktime(ts
);
425 /* This works even if 32 bit because of careful byte order choice */
426 static inline int ktime_lt(const ktime_t cmp1
, const ktime_t cmp2
)
428 return cmp1
.tv64
< cmp2
.tv64
;
431 static const char version
[] =
432 "Packet Generator for packet performance testing. "
433 "Version: " VERSION
"\n";
435 static int pktgen_remove_device(struct pktgen_thread
*t
, struct pktgen_dev
*i
);
436 static int pktgen_add_device(struct pktgen_thread
*t
, const char *ifname
);
437 static struct pktgen_dev
*pktgen_find_dev(struct pktgen_thread
*t
,
438 const char *ifname
, bool exact
);
439 static int pktgen_device_event(struct notifier_block
*, unsigned long, void *);
440 static void pktgen_run_all_threads(void);
441 static void pktgen_reset_all_threads(void);
442 static void pktgen_stop_all_threads_ifs(void);
444 static void pktgen_stop(struct pktgen_thread
*t
);
445 static void pktgen_clear_counters(struct pktgen_dev
*pkt_dev
);
447 static unsigned int scan_ip6(const char *s
, char ip
[16]);
448 static unsigned int fmt_ip6(char *s
, const char ip
[16]);
450 /* Module parameters, defaults. */
451 static int pg_count_d __read_mostly
= 1000;
452 static int pg_delay_d __read_mostly
;
453 static int pg_clone_skb_d __read_mostly
;
454 static int debug __read_mostly
;
456 static DEFINE_MUTEX(pktgen_thread_lock
);
457 static LIST_HEAD(pktgen_threads
);
459 static struct notifier_block pktgen_notifier_block
= {
460 .notifier_call
= pktgen_device_event
,
464 * /proc handling functions
468 static int pgctrl_show(struct seq_file
*seq
, void *v
)
470 seq_puts(seq
, version
);
474 static ssize_t
pgctrl_write(struct file
*file
, const char __user
*buf
,
475 size_t count
, loff_t
*ppos
)
480 if (!capable(CAP_NET_ADMIN
)) {
485 if (count
> sizeof(data
))
486 count
= sizeof(data
);
488 if (copy_from_user(data
, buf
, count
)) {
492 data
[count
- 1] = 0; /* Make string */
494 if (!strcmp(data
, "stop"))
495 pktgen_stop_all_threads_ifs();
497 else if (!strcmp(data
, "start"))
498 pktgen_run_all_threads();
500 else if (!strcmp(data
, "reset"))
501 pktgen_reset_all_threads();
504 pr_warning("Unknown command: %s\n", data
);
512 static int pgctrl_open(struct inode
*inode
, struct file
*file
)
514 return single_open(file
, pgctrl_show
, PDE(inode
)->data
);
517 static const struct file_operations pktgen_fops
= {
518 .owner
= THIS_MODULE
,
522 .write
= pgctrl_write
,
523 .release
= single_release
,
526 static int pktgen_if_show(struct seq_file
*seq
, void *v
)
528 const struct pktgen_dev
*pkt_dev
= seq
->private;
533 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
534 (unsigned long long)pkt_dev
->count
, pkt_dev
->min_pkt_size
,
535 pkt_dev
->max_pkt_size
);
538 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
539 pkt_dev
->nfrags
, (unsigned long long) pkt_dev
->delay
,
540 pkt_dev
->clone_skb
, pkt_dev
->odevname
);
542 seq_printf(seq
, " flows: %u flowlen: %u\n", pkt_dev
->cflows
,
546 " queue_map_min: %u queue_map_max: %u\n",
547 pkt_dev
->queue_map_min
,
548 pkt_dev
->queue_map_max
);
550 if (pkt_dev
->flags
& F_IPV6
) {
551 char b1
[128], b2
[128], b3
[128];
552 fmt_ip6(b1
, pkt_dev
->in6_saddr
.s6_addr
);
553 fmt_ip6(b2
, pkt_dev
->min_in6_saddr
.s6_addr
);
554 fmt_ip6(b3
, pkt_dev
->max_in6_saddr
.s6_addr
);
556 " saddr: %s min_saddr: %s max_saddr: %s\n", b1
,
559 fmt_ip6(b1
, pkt_dev
->in6_daddr
.s6_addr
);
560 fmt_ip6(b2
, pkt_dev
->min_in6_daddr
.s6_addr
);
561 fmt_ip6(b3
, pkt_dev
->max_in6_daddr
.s6_addr
);
563 " daddr: %s min_daddr: %s max_daddr: %s\n", b1
,
568 " dst_min: %s dst_max: %s\n",
569 pkt_dev
->dst_min
, pkt_dev
->dst_max
);
571 " src_min: %s src_max: %s\n",
572 pkt_dev
->src_min
, pkt_dev
->src_max
);
575 seq_puts(seq
, " src_mac: ");
577 seq_printf(seq
, "%pM ",
578 is_zero_ether_addr(pkt_dev
->src_mac
) ?
579 pkt_dev
->odev
->dev_addr
: pkt_dev
->src_mac
);
581 seq_printf(seq
, "dst_mac: ");
582 seq_printf(seq
, "%pM\n", pkt_dev
->dst_mac
);
585 " udp_src_min: %d udp_src_max: %d"
586 " udp_dst_min: %d udp_dst_max: %d\n",
587 pkt_dev
->udp_src_min
, pkt_dev
->udp_src_max
,
588 pkt_dev
->udp_dst_min
, pkt_dev
->udp_dst_max
);
591 " src_mac_count: %d dst_mac_count: %d\n",
592 pkt_dev
->src_mac_count
, pkt_dev
->dst_mac_count
);
594 if (pkt_dev
->nr_labels
) {
596 seq_printf(seq
, " mpls: ");
597 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
598 seq_printf(seq
, "%08x%s", ntohl(pkt_dev
->labels
[i
]),
599 i
== pkt_dev
->nr_labels
-1 ? "\n" : ", ");
602 if (pkt_dev
->vlan_id
!= 0xffff)
603 seq_printf(seq
, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
604 pkt_dev
->vlan_id
, pkt_dev
->vlan_p
,
607 if (pkt_dev
->svlan_id
!= 0xffff)
608 seq_printf(seq
, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
609 pkt_dev
->svlan_id
, pkt_dev
->svlan_p
,
613 seq_printf(seq
, " tos: 0x%02x\n", pkt_dev
->tos
);
615 if (pkt_dev
->traffic_class
)
616 seq_printf(seq
, " traffic_class: 0x%02x\n", pkt_dev
->traffic_class
);
618 if (pkt_dev
->node
>= 0)
619 seq_printf(seq
, " node: %d\n", pkt_dev
->node
);
621 seq_printf(seq
, " Flags: ");
623 if (pkt_dev
->flags
& F_IPV6
)
624 seq_printf(seq
, "IPV6 ");
626 if (pkt_dev
->flags
& F_IPSRC_RND
)
627 seq_printf(seq
, "IPSRC_RND ");
629 if (pkt_dev
->flags
& F_IPDST_RND
)
630 seq_printf(seq
, "IPDST_RND ");
632 if (pkt_dev
->flags
& F_TXSIZE_RND
)
633 seq_printf(seq
, "TXSIZE_RND ");
635 if (pkt_dev
->flags
& F_UDPSRC_RND
)
636 seq_printf(seq
, "UDPSRC_RND ");
638 if (pkt_dev
->flags
& F_UDPDST_RND
)
639 seq_printf(seq
, "UDPDST_RND ");
641 if (pkt_dev
->flags
& F_MPLS_RND
)
642 seq_printf(seq
, "MPLS_RND ");
644 if (pkt_dev
->flags
& F_QUEUE_MAP_RND
)
645 seq_printf(seq
, "QUEUE_MAP_RND ");
647 if (pkt_dev
->flags
& F_QUEUE_MAP_CPU
)
648 seq_printf(seq
, "QUEUE_MAP_CPU ");
650 if (pkt_dev
->cflows
) {
651 if (pkt_dev
->flags
& F_FLOW_SEQ
)
652 seq_printf(seq
, "FLOW_SEQ "); /*in sequence flows*/
654 seq_printf(seq
, "FLOW_RND ");
658 if (pkt_dev
->flags
& F_IPSEC_ON
)
659 seq_printf(seq
, "IPSEC ");
662 if (pkt_dev
->flags
& F_MACSRC_RND
)
663 seq_printf(seq
, "MACSRC_RND ");
665 if (pkt_dev
->flags
& F_MACDST_RND
)
666 seq_printf(seq
, "MACDST_RND ");
668 if (pkt_dev
->flags
& F_VID_RND
)
669 seq_printf(seq
, "VID_RND ");
671 if (pkt_dev
->flags
& F_SVID_RND
)
672 seq_printf(seq
, "SVID_RND ");
674 if (pkt_dev
->flags
& F_NODE
)
675 seq_printf(seq
, "NODE_ALLOC ");
679 /* not really stopped, more like last-running-at */
680 stopped
= pkt_dev
->running
? ktime_now() : pkt_dev
->stopped_at
;
681 idle
= pkt_dev
->idle_acc
;
682 do_div(idle
, NSEC_PER_USEC
);
685 "Current:\n pkts-sofar: %llu errors: %llu\n",
686 (unsigned long long)pkt_dev
->sofar
,
687 (unsigned long long)pkt_dev
->errors
);
690 " started: %lluus stopped: %lluus idle: %lluus\n",
691 (unsigned long long) ktime_to_us(pkt_dev
->started_at
),
692 (unsigned long long) ktime_to_us(stopped
),
693 (unsigned long long) idle
);
696 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
697 pkt_dev
->seq_num
, pkt_dev
->cur_dst_mac_offset
,
698 pkt_dev
->cur_src_mac_offset
);
700 if (pkt_dev
->flags
& F_IPV6
) {
701 char b1
[128], b2
[128];
702 fmt_ip6(b1
, pkt_dev
->cur_in6_daddr
.s6_addr
);
703 fmt_ip6(b2
, pkt_dev
->cur_in6_saddr
.s6_addr
);
704 seq_printf(seq
, " cur_saddr: %s cur_daddr: %s\n", b2
, b1
);
706 seq_printf(seq
, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
707 pkt_dev
->cur_saddr
, pkt_dev
->cur_daddr
);
709 seq_printf(seq
, " cur_udp_dst: %d cur_udp_src: %d\n",
710 pkt_dev
->cur_udp_dst
, pkt_dev
->cur_udp_src
);
712 seq_printf(seq
, " cur_queue_map: %u\n", pkt_dev
->cur_queue_map
);
714 seq_printf(seq
, " flows: %u\n", pkt_dev
->nflows
);
716 if (pkt_dev
->result
[0])
717 seq_printf(seq
, "Result: %s\n", pkt_dev
->result
);
719 seq_printf(seq
, "Result: Idle\n");
725 static int hex32_arg(const char __user
*user_buffer
, unsigned long maxlen
,
731 for (; i
< maxlen
; i
++) {
735 if (get_user(c
, &user_buffer
[i
]))
737 value
= hex_to_bin(c
);
746 static int count_trail_chars(const char __user
* user_buffer
,
751 for (i
= 0; i
< maxlen
; i
++) {
753 if (get_user(c
, &user_buffer
[i
]))
771 static unsigned long num_arg(const char __user
* user_buffer
,
772 unsigned long maxlen
, unsigned long *num
)
777 for (i
= 0; i
< maxlen
; i
++) {
779 if (get_user(c
, &user_buffer
[i
]))
781 if ((c
>= '0') && (c
<= '9')) {
790 static int strn_len(const char __user
* user_buffer
, unsigned int maxlen
)
794 for (i
= 0; i
< maxlen
; i
++) {
796 if (get_user(c
, &user_buffer
[i
]))
814 static ssize_t
get_labels(const char __user
*buffer
, struct pktgen_dev
*pkt_dev
)
821 pkt_dev
->nr_labels
= 0;
824 len
= hex32_arg(&buffer
[i
], 8, &tmp
);
827 pkt_dev
->labels
[n
] = htonl(tmp
);
828 if (pkt_dev
->labels
[n
] & MPLS_STACK_BOTTOM
)
829 pkt_dev
->flags
|= F_MPLS_RND
;
831 if (get_user(c
, &buffer
[i
]))
835 if (n
>= MAX_MPLS_LABELS
)
839 pkt_dev
->nr_labels
= n
;
843 static ssize_t
pktgen_if_write(struct file
*file
,
844 const char __user
* user_buffer
, size_t count
,
847 struct seq_file
*seq
= file
->private_data
;
848 struct pktgen_dev
*pkt_dev
= seq
->private;
850 char name
[16], valstr
[32];
851 unsigned long value
= 0;
852 char *pg_result
= NULL
;
856 pg_result
= &(pkt_dev
->result
[0]);
859 pr_warning("wrong command format\n");
864 tmp
= count_trail_chars(user_buffer
, max
);
866 pr_warning("illegal format\n");
871 /* Read variable name */
873 len
= strn_len(&user_buffer
[i
], sizeof(name
) - 1);
877 memset(name
, 0, sizeof(name
));
878 if (copy_from_user(name
, &user_buffer
[i
], len
))
883 len
= count_trail_chars(&user_buffer
[i
], max
);
890 size_t copy
= min_t(size_t, count
, 1023);
892 if (copy_from_user(tb
, user_buffer
, copy
))
895 printk(KERN_DEBUG
"pktgen: %s,%lu buffer -:%s:-\n", name
,
896 (unsigned long)count
, tb
);
899 if (!strcmp(name
, "min_pkt_size")) {
900 len
= num_arg(&user_buffer
[i
], 10, &value
);
905 if (value
< 14 + 20 + 8)
907 if (value
!= pkt_dev
->min_pkt_size
) {
908 pkt_dev
->min_pkt_size
= value
;
909 pkt_dev
->cur_pkt_size
= value
;
911 sprintf(pg_result
, "OK: min_pkt_size=%u",
912 pkt_dev
->min_pkt_size
);
916 if (!strcmp(name
, "max_pkt_size")) {
917 len
= num_arg(&user_buffer
[i
], 10, &value
);
922 if (value
< 14 + 20 + 8)
924 if (value
!= pkt_dev
->max_pkt_size
) {
925 pkt_dev
->max_pkt_size
= value
;
926 pkt_dev
->cur_pkt_size
= value
;
928 sprintf(pg_result
, "OK: max_pkt_size=%u",
929 pkt_dev
->max_pkt_size
);
933 /* Shortcut for min = max */
935 if (!strcmp(name
, "pkt_size")) {
936 len
= num_arg(&user_buffer
[i
], 10, &value
);
941 if (value
< 14 + 20 + 8)
943 if (value
!= pkt_dev
->min_pkt_size
) {
944 pkt_dev
->min_pkt_size
= value
;
945 pkt_dev
->max_pkt_size
= value
;
946 pkt_dev
->cur_pkt_size
= value
;
948 sprintf(pg_result
, "OK: pkt_size=%u", pkt_dev
->min_pkt_size
);
952 if (!strcmp(name
, "debug")) {
953 len
= num_arg(&user_buffer
[i
], 10, &value
);
959 sprintf(pg_result
, "OK: debug=%u", debug
);
963 if (!strcmp(name
, "frags")) {
964 len
= num_arg(&user_buffer
[i
], 10, &value
);
969 pkt_dev
->nfrags
= value
;
970 sprintf(pg_result
, "OK: frags=%u", pkt_dev
->nfrags
);
973 if (!strcmp(name
, "delay")) {
974 len
= num_arg(&user_buffer
[i
], 10, &value
);
979 if (value
== 0x7FFFFFFF)
980 pkt_dev
->delay
= ULLONG_MAX
;
982 pkt_dev
->delay
= (u64
)value
;
984 sprintf(pg_result
, "OK: delay=%llu",
985 (unsigned long long) pkt_dev
->delay
);
988 if (!strcmp(name
, "rate")) {
989 len
= num_arg(&user_buffer
[i
], 10, &value
);
996 pkt_dev
->delay
= pkt_dev
->min_pkt_size
*8*NSEC_PER_USEC
/value
;
998 pr_info("Delay set at: %llu ns\n", pkt_dev
->delay
);
1000 sprintf(pg_result
, "OK: rate=%lu", value
);
1003 if (!strcmp(name
, "ratep")) {
1004 len
= num_arg(&user_buffer
[i
], 10, &value
);
1011 pkt_dev
->delay
= NSEC_PER_SEC
/value
;
1013 pr_info("Delay set at: %llu ns\n", pkt_dev
->delay
);
1015 sprintf(pg_result
, "OK: rate=%lu", value
);
1018 if (!strcmp(name
, "udp_src_min")) {
1019 len
= num_arg(&user_buffer
[i
], 10, &value
);
1024 if (value
!= pkt_dev
->udp_src_min
) {
1025 pkt_dev
->udp_src_min
= value
;
1026 pkt_dev
->cur_udp_src
= value
;
1028 sprintf(pg_result
, "OK: udp_src_min=%u", pkt_dev
->udp_src_min
);
1031 if (!strcmp(name
, "udp_dst_min")) {
1032 len
= num_arg(&user_buffer
[i
], 10, &value
);
1037 if (value
!= pkt_dev
->udp_dst_min
) {
1038 pkt_dev
->udp_dst_min
= value
;
1039 pkt_dev
->cur_udp_dst
= value
;
1041 sprintf(pg_result
, "OK: udp_dst_min=%u", pkt_dev
->udp_dst_min
);
1044 if (!strcmp(name
, "udp_src_max")) {
1045 len
= num_arg(&user_buffer
[i
], 10, &value
);
1050 if (value
!= pkt_dev
->udp_src_max
) {
1051 pkt_dev
->udp_src_max
= value
;
1052 pkt_dev
->cur_udp_src
= value
;
1054 sprintf(pg_result
, "OK: udp_src_max=%u", pkt_dev
->udp_src_max
);
1057 if (!strcmp(name
, "udp_dst_max")) {
1058 len
= num_arg(&user_buffer
[i
], 10, &value
);
1063 if (value
!= pkt_dev
->udp_dst_max
) {
1064 pkt_dev
->udp_dst_max
= value
;
1065 pkt_dev
->cur_udp_dst
= value
;
1067 sprintf(pg_result
, "OK: udp_dst_max=%u", pkt_dev
->udp_dst_max
);
1070 if (!strcmp(name
, "clone_skb")) {
1071 len
= num_arg(&user_buffer
[i
], 10, &value
);
1076 pkt_dev
->clone_skb
= value
;
1078 sprintf(pg_result
, "OK: clone_skb=%d", pkt_dev
->clone_skb
);
1081 if (!strcmp(name
, "count")) {
1082 len
= num_arg(&user_buffer
[i
], 10, &value
);
1087 pkt_dev
->count
= value
;
1088 sprintf(pg_result
, "OK: count=%llu",
1089 (unsigned long long)pkt_dev
->count
);
1092 if (!strcmp(name
, "src_mac_count")) {
1093 len
= num_arg(&user_buffer
[i
], 10, &value
);
1098 if (pkt_dev
->src_mac_count
!= value
) {
1099 pkt_dev
->src_mac_count
= value
;
1100 pkt_dev
->cur_src_mac_offset
= 0;
1102 sprintf(pg_result
, "OK: src_mac_count=%d",
1103 pkt_dev
->src_mac_count
);
1106 if (!strcmp(name
, "dst_mac_count")) {
1107 len
= num_arg(&user_buffer
[i
], 10, &value
);
1112 if (pkt_dev
->dst_mac_count
!= value
) {
1113 pkt_dev
->dst_mac_count
= value
;
1114 pkt_dev
->cur_dst_mac_offset
= 0;
1116 sprintf(pg_result
, "OK: dst_mac_count=%d",
1117 pkt_dev
->dst_mac_count
);
1120 if (!strcmp(name
, "node")) {
1121 len
= num_arg(&user_buffer
[i
], 10, &value
);
1127 if (node_possible(value
)) {
1128 pkt_dev
->node
= value
;
1129 sprintf(pg_result
, "OK: node=%d", pkt_dev
->node
);
1132 sprintf(pg_result
, "ERROR: node not possible");
1135 if (!strcmp(name
, "flag")) {
1138 len
= strn_len(&user_buffer
[i
], sizeof(f
) - 1);
1142 if (copy_from_user(f
, &user_buffer
[i
], len
))
1145 if (strcmp(f
, "IPSRC_RND") == 0)
1146 pkt_dev
->flags
|= F_IPSRC_RND
;
1148 else if (strcmp(f
, "!IPSRC_RND") == 0)
1149 pkt_dev
->flags
&= ~F_IPSRC_RND
;
1151 else if (strcmp(f
, "TXSIZE_RND") == 0)
1152 pkt_dev
->flags
|= F_TXSIZE_RND
;
1154 else if (strcmp(f
, "!TXSIZE_RND") == 0)
1155 pkt_dev
->flags
&= ~F_TXSIZE_RND
;
1157 else if (strcmp(f
, "IPDST_RND") == 0)
1158 pkt_dev
->flags
|= F_IPDST_RND
;
1160 else if (strcmp(f
, "!IPDST_RND") == 0)
1161 pkt_dev
->flags
&= ~F_IPDST_RND
;
1163 else if (strcmp(f
, "UDPSRC_RND") == 0)
1164 pkt_dev
->flags
|= F_UDPSRC_RND
;
1166 else if (strcmp(f
, "!UDPSRC_RND") == 0)
1167 pkt_dev
->flags
&= ~F_UDPSRC_RND
;
1169 else if (strcmp(f
, "UDPDST_RND") == 0)
1170 pkt_dev
->flags
|= F_UDPDST_RND
;
1172 else if (strcmp(f
, "!UDPDST_RND") == 0)
1173 pkt_dev
->flags
&= ~F_UDPDST_RND
;
1175 else if (strcmp(f
, "MACSRC_RND") == 0)
1176 pkt_dev
->flags
|= F_MACSRC_RND
;
1178 else if (strcmp(f
, "!MACSRC_RND") == 0)
1179 pkt_dev
->flags
&= ~F_MACSRC_RND
;
1181 else if (strcmp(f
, "MACDST_RND") == 0)
1182 pkt_dev
->flags
|= F_MACDST_RND
;
1184 else if (strcmp(f
, "!MACDST_RND") == 0)
1185 pkt_dev
->flags
&= ~F_MACDST_RND
;
1187 else if (strcmp(f
, "MPLS_RND") == 0)
1188 pkt_dev
->flags
|= F_MPLS_RND
;
1190 else if (strcmp(f
, "!MPLS_RND") == 0)
1191 pkt_dev
->flags
&= ~F_MPLS_RND
;
1193 else if (strcmp(f
, "VID_RND") == 0)
1194 pkt_dev
->flags
|= F_VID_RND
;
1196 else if (strcmp(f
, "!VID_RND") == 0)
1197 pkt_dev
->flags
&= ~F_VID_RND
;
1199 else if (strcmp(f
, "SVID_RND") == 0)
1200 pkt_dev
->flags
|= F_SVID_RND
;
1202 else if (strcmp(f
, "!SVID_RND") == 0)
1203 pkt_dev
->flags
&= ~F_SVID_RND
;
1205 else if (strcmp(f
, "FLOW_SEQ") == 0)
1206 pkt_dev
->flags
|= F_FLOW_SEQ
;
1208 else if (strcmp(f
, "QUEUE_MAP_RND") == 0)
1209 pkt_dev
->flags
|= F_QUEUE_MAP_RND
;
1211 else if (strcmp(f
, "!QUEUE_MAP_RND") == 0)
1212 pkt_dev
->flags
&= ~F_QUEUE_MAP_RND
;
1214 else if (strcmp(f
, "QUEUE_MAP_CPU") == 0)
1215 pkt_dev
->flags
|= F_QUEUE_MAP_CPU
;
1217 else if (strcmp(f
, "!QUEUE_MAP_CPU") == 0)
1218 pkt_dev
->flags
&= ~F_QUEUE_MAP_CPU
;
1220 else if (strcmp(f
, "IPSEC") == 0)
1221 pkt_dev
->flags
|= F_IPSEC_ON
;
1224 else if (strcmp(f
, "!IPV6") == 0)
1225 pkt_dev
->flags
&= ~F_IPV6
;
1227 else if (strcmp(f
, "NODE_ALLOC") == 0)
1228 pkt_dev
->flags
|= F_NODE
;
1230 else if (strcmp(f
, "!NODE_ALLOC") == 0)
1231 pkt_dev
->flags
&= ~F_NODE
;
1235 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1237 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
1238 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
1241 sprintf(pg_result
, "OK: flags=0x%x", pkt_dev
->flags
);
1244 if (!strcmp(name
, "dst_min") || !strcmp(name
, "dst")) {
1245 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->dst_min
) - 1);
1249 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1252 if (strcmp(buf
, pkt_dev
->dst_min
) != 0) {
1253 memset(pkt_dev
->dst_min
, 0, sizeof(pkt_dev
->dst_min
));
1254 strncpy(pkt_dev
->dst_min
, buf
, len
);
1255 pkt_dev
->daddr_min
= in_aton(pkt_dev
->dst_min
);
1256 pkt_dev
->cur_daddr
= pkt_dev
->daddr_min
;
1259 printk(KERN_DEBUG
"pktgen: dst_min set to: %s\n",
1262 sprintf(pg_result
, "OK: dst_min=%s", pkt_dev
->dst_min
);
1265 if (!strcmp(name
, "dst_max")) {
1266 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->dst_max
) - 1);
1271 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1275 if (strcmp(buf
, pkt_dev
->dst_max
) != 0) {
1276 memset(pkt_dev
->dst_max
, 0, sizeof(pkt_dev
->dst_max
));
1277 strncpy(pkt_dev
->dst_max
, buf
, len
);
1278 pkt_dev
->daddr_max
= in_aton(pkt_dev
->dst_max
);
1279 pkt_dev
->cur_daddr
= pkt_dev
->daddr_max
;
1282 printk(KERN_DEBUG
"pktgen: dst_max set to: %s\n",
1285 sprintf(pg_result
, "OK: dst_max=%s", pkt_dev
->dst_max
);
1288 if (!strcmp(name
, "dst6")) {
1289 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1293 pkt_dev
->flags
|= F_IPV6
;
1295 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1299 scan_ip6(buf
, pkt_dev
->in6_daddr
.s6_addr
);
1300 fmt_ip6(buf
, pkt_dev
->in6_daddr
.s6_addr
);
1302 ipv6_addr_copy(&pkt_dev
->cur_in6_daddr
, &pkt_dev
->in6_daddr
);
1305 printk(KERN_DEBUG
"pktgen: dst6 set to: %s\n", buf
);
1308 sprintf(pg_result
, "OK: dst6=%s", buf
);
1311 if (!strcmp(name
, "dst6_min")) {
1312 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1316 pkt_dev
->flags
|= F_IPV6
;
1318 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1322 scan_ip6(buf
, pkt_dev
->min_in6_daddr
.s6_addr
);
1323 fmt_ip6(buf
, pkt_dev
->min_in6_daddr
.s6_addr
);
1325 ipv6_addr_copy(&pkt_dev
->cur_in6_daddr
,
1326 &pkt_dev
->min_in6_daddr
);
1328 printk(KERN_DEBUG
"pktgen: dst6_min set to: %s\n", buf
);
1331 sprintf(pg_result
, "OK: dst6_min=%s", buf
);
1334 if (!strcmp(name
, "dst6_max")) {
1335 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1339 pkt_dev
->flags
|= F_IPV6
;
1341 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1345 scan_ip6(buf
, pkt_dev
->max_in6_daddr
.s6_addr
);
1346 fmt_ip6(buf
, pkt_dev
->max_in6_daddr
.s6_addr
);
1349 printk(KERN_DEBUG
"pktgen: dst6_max set to: %s\n", buf
);
1352 sprintf(pg_result
, "OK: dst6_max=%s", buf
);
1355 if (!strcmp(name
, "src6")) {
1356 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1360 pkt_dev
->flags
|= F_IPV6
;
1362 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1366 scan_ip6(buf
, pkt_dev
->in6_saddr
.s6_addr
);
1367 fmt_ip6(buf
, pkt_dev
->in6_saddr
.s6_addr
);
1369 ipv6_addr_copy(&pkt_dev
->cur_in6_saddr
, &pkt_dev
->in6_saddr
);
1372 printk(KERN_DEBUG
"pktgen: src6 set to: %s\n", buf
);
1375 sprintf(pg_result
, "OK: src6=%s", buf
);
1378 if (!strcmp(name
, "src_min")) {
1379 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->src_min
) - 1);
1383 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1386 if (strcmp(buf
, pkt_dev
->src_min
) != 0) {
1387 memset(pkt_dev
->src_min
, 0, sizeof(pkt_dev
->src_min
));
1388 strncpy(pkt_dev
->src_min
, buf
, len
);
1389 pkt_dev
->saddr_min
= in_aton(pkt_dev
->src_min
);
1390 pkt_dev
->cur_saddr
= pkt_dev
->saddr_min
;
1393 printk(KERN_DEBUG
"pktgen: src_min set to: %s\n",
1396 sprintf(pg_result
, "OK: src_min=%s", pkt_dev
->src_min
);
1399 if (!strcmp(name
, "src_max")) {
1400 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->src_max
) - 1);
1404 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1407 if (strcmp(buf
, pkt_dev
->src_max
) != 0) {
1408 memset(pkt_dev
->src_max
, 0, sizeof(pkt_dev
->src_max
));
1409 strncpy(pkt_dev
->src_max
, buf
, len
);
1410 pkt_dev
->saddr_max
= in_aton(pkt_dev
->src_max
);
1411 pkt_dev
->cur_saddr
= pkt_dev
->saddr_max
;
1414 printk(KERN_DEBUG
"pktgen: src_max set to: %s\n",
1417 sprintf(pg_result
, "OK: src_max=%s", pkt_dev
->src_max
);
1420 if (!strcmp(name
, "dst_mac")) {
1422 unsigned char old_dmac
[ETH_ALEN
];
1423 unsigned char *m
= pkt_dev
->dst_mac
;
1424 memcpy(old_dmac
, pkt_dev
->dst_mac
, ETH_ALEN
);
1426 len
= strn_len(&user_buffer
[i
], sizeof(valstr
) - 1);
1430 memset(valstr
, 0, sizeof(valstr
));
1431 if (copy_from_user(valstr
, &user_buffer
[i
], len
))
1435 for (*m
= 0; *v
&& m
< pkt_dev
->dst_mac
+ 6; v
++) {
1438 value
= hex_to_bin(*v
);
1440 *m
= *m
* 16 + value
;
1448 /* Set up Dest MAC */
1449 if (compare_ether_addr(old_dmac
, pkt_dev
->dst_mac
))
1450 memcpy(&(pkt_dev
->hh
[0]), pkt_dev
->dst_mac
, ETH_ALEN
);
1452 sprintf(pg_result
, "OK: dstmac");
1455 if (!strcmp(name
, "src_mac")) {
1457 unsigned char old_smac
[ETH_ALEN
];
1458 unsigned char *m
= pkt_dev
->src_mac
;
1460 memcpy(old_smac
, pkt_dev
->src_mac
, ETH_ALEN
);
1462 len
= strn_len(&user_buffer
[i
], sizeof(valstr
) - 1);
1466 memset(valstr
, 0, sizeof(valstr
));
1467 if (copy_from_user(valstr
, &user_buffer
[i
], len
))
1471 for (*m
= 0; *v
&& m
< pkt_dev
->src_mac
+ 6; v
++) {
1474 value
= hex_to_bin(*v
);
1476 *m
= *m
* 16 + value
;
1484 /* Set up Src MAC */
1485 if (compare_ether_addr(old_smac
, pkt_dev
->src_mac
))
1486 memcpy(&(pkt_dev
->hh
[6]), pkt_dev
->src_mac
, ETH_ALEN
);
1488 sprintf(pg_result
, "OK: srcmac");
1492 if (!strcmp(name
, "clear_counters")) {
1493 pktgen_clear_counters(pkt_dev
);
1494 sprintf(pg_result
, "OK: Clearing counters.\n");
1498 if (!strcmp(name
, "flows")) {
1499 len
= num_arg(&user_buffer
[i
], 10, &value
);
1504 if (value
> MAX_CFLOWS
)
1507 pkt_dev
->cflows
= value
;
1508 sprintf(pg_result
, "OK: flows=%u", pkt_dev
->cflows
);
1512 if (!strcmp(name
, "flowlen")) {
1513 len
= num_arg(&user_buffer
[i
], 10, &value
);
1518 pkt_dev
->lflow
= value
;
1519 sprintf(pg_result
, "OK: flowlen=%u", pkt_dev
->lflow
);
1523 if (!strcmp(name
, "queue_map_min")) {
1524 len
= num_arg(&user_buffer
[i
], 5, &value
);
1529 pkt_dev
->queue_map_min
= value
;
1530 sprintf(pg_result
, "OK: queue_map_min=%u", pkt_dev
->queue_map_min
);
1534 if (!strcmp(name
, "queue_map_max")) {
1535 len
= num_arg(&user_buffer
[i
], 5, &value
);
1540 pkt_dev
->queue_map_max
= value
;
1541 sprintf(pg_result
, "OK: queue_map_max=%u", pkt_dev
->queue_map_max
);
1545 if (!strcmp(name
, "mpls")) {
1548 len
= get_labels(&user_buffer
[i
], pkt_dev
);
1552 cnt
= sprintf(pg_result
, "OK: mpls=");
1553 for (n
= 0; n
< pkt_dev
->nr_labels
; n
++)
1554 cnt
+= sprintf(pg_result
+ cnt
,
1555 "%08x%s", ntohl(pkt_dev
->labels
[n
]),
1556 n
== pkt_dev
->nr_labels
-1 ? "" : ",");
1558 if (pkt_dev
->nr_labels
&& pkt_dev
->vlan_id
!= 0xffff) {
1559 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1560 pkt_dev
->svlan_id
= 0xffff;
1563 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN auto turned off\n");
1568 if (!strcmp(name
, "vlan_id")) {
1569 len
= num_arg(&user_buffer
[i
], 4, &value
);
1574 if (value
<= 4095) {
1575 pkt_dev
->vlan_id
= value
; /* turn on VLAN */
1578 printk(KERN_DEBUG
"pktgen: VLAN turned on\n");
1580 if (debug
&& pkt_dev
->nr_labels
)
1581 printk(KERN_DEBUG
"pktgen: MPLS auto turned off\n");
1583 pkt_dev
->nr_labels
= 0; /* turn off MPLS */
1584 sprintf(pg_result
, "OK: vlan_id=%u", pkt_dev
->vlan_id
);
1586 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1587 pkt_dev
->svlan_id
= 0xffff;
1590 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN turned off\n");
1595 if (!strcmp(name
, "vlan_p")) {
1596 len
= num_arg(&user_buffer
[i
], 1, &value
);
1601 if ((value
<= 7) && (pkt_dev
->vlan_id
!= 0xffff)) {
1602 pkt_dev
->vlan_p
= value
;
1603 sprintf(pg_result
, "OK: vlan_p=%u", pkt_dev
->vlan_p
);
1605 sprintf(pg_result
, "ERROR: vlan_p must be 0-7");
1610 if (!strcmp(name
, "vlan_cfi")) {
1611 len
= num_arg(&user_buffer
[i
], 1, &value
);
1616 if ((value
<= 1) && (pkt_dev
->vlan_id
!= 0xffff)) {
1617 pkt_dev
->vlan_cfi
= value
;
1618 sprintf(pg_result
, "OK: vlan_cfi=%u", pkt_dev
->vlan_cfi
);
1620 sprintf(pg_result
, "ERROR: vlan_cfi must be 0-1");
1625 if (!strcmp(name
, "svlan_id")) {
1626 len
= num_arg(&user_buffer
[i
], 4, &value
);
1631 if ((value
<= 4095) && ((pkt_dev
->vlan_id
!= 0xffff))) {
1632 pkt_dev
->svlan_id
= value
; /* turn on SVLAN */
1635 printk(KERN_DEBUG
"pktgen: SVLAN turned on\n");
1637 if (debug
&& pkt_dev
->nr_labels
)
1638 printk(KERN_DEBUG
"pktgen: MPLS auto turned off\n");
1640 pkt_dev
->nr_labels
= 0; /* turn off MPLS */
1641 sprintf(pg_result
, "OK: svlan_id=%u", pkt_dev
->svlan_id
);
1643 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1644 pkt_dev
->svlan_id
= 0xffff;
1647 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN turned off\n");
1652 if (!strcmp(name
, "svlan_p")) {
1653 len
= num_arg(&user_buffer
[i
], 1, &value
);
1658 if ((value
<= 7) && (pkt_dev
->svlan_id
!= 0xffff)) {
1659 pkt_dev
->svlan_p
= value
;
1660 sprintf(pg_result
, "OK: svlan_p=%u", pkt_dev
->svlan_p
);
1662 sprintf(pg_result
, "ERROR: svlan_p must be 0-7");
1667 if (!strcmp(name
, "svlan_cfi")) {
1668 len
= num_arg(&user_buffer
[i
], 1, &value
);
1673 if ((value
<= 1) && (pkt_dev
->svlan_id
!= 0xffff)) {
1674 pkt_dev
->svlan_cfi
= value
;
1675 sprintf(pg_result
, "OK: svlan_cfi=%u", pkt_dev
->svlan_cfi
);
1677 sprintf(pg_result
, "ERROR: svlan_cfi must be 0-1");
1682 if (!strcmp(name
, "tos")) {
1683 __u32 tmp_value
= 0;
1684 len
= hex32_arg(&user_buffer
[i
], 2, &tmp_value
);
1690 pkt_dev
->tos
= tmp_value
;
1691 sprintf(pg_result
, "OK: tos=0x%02x", pkt_dev
->tos
);
1693 sprintf(pg_result
, "ERROR: tos must be 00-ff");
1698 if (!strcmp(name
, "traffic_class")) {
1699 __u32 tmp_value
= 0;
1700 len
= hex32_arg(&user_buffer
[i
], 2, &tmp_value
);
1706 pkt_dev
->traffic_class
= tmp_value
;
1707 sprintf(pg_result
, "OK: traffic_class=0x%02x", pkt_dev
->traffic_class
);
1709 sprintf(pg_result
, "ERROR: traffic_class must be 00-ff");
1714 sprintf(pkt_dev
->result
, "No such parameter \"%s\"", name
);
1718 static int pktgen_if_open(struct inode
*inode
, struct file
*file
)
1720 return single_open(file
, pktgen_if_show
, PDE(inode
)->data
);
1723 static const struct file_operations pktgen_if_fops
= {
1724 .owner
= THIS_MODULE
,
1725 .open
= pktgen_if_open
,
1727 .llseek
= seq_lseek
,
1728 .write
= pktgen_if_write
,
1729 .release
= single_release
,
1732 static int pktgen_thread_show(struct seq_file
*seq
, void *v
)
1734 struct pktgen_thread
*t
= seq
->private;
1735 const struct pktgen_dev
*pkt_dev
;
1739 seq_printf(seq
, "Running: ");
1742 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
1743 if (pkt_dev
->running
)
1744 seq_printf(seq
, "%s ", pkt_dev
->odevname
);
1746 seq_printf(seq
, "\nStopped: ");
1748 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
1749 if (!pkt_dev
->running
)
1750 seq_printf(seq
, "%s ", pkt_dev
->odevname
);
1753 seq_printf(seq
, "\nResult: %s\n", t
->result
);
1755 seq_printf(seq
, "\nResult: NA\n");
1762 static ssize_t
pktgen_thread_write(struct file
*file
,
1763 const char __user
* user_buffer
,
1764 size_t count
, loff_t
* offset
)
1766 struct seq_file
*seq
= file
->private_data
;
1767 struct pktgen_thread
*t
= seq
->private;
1768 int i
, max
, len
, ret
;
1773 // sprintf(pg_result, "Wrong command format");
1778 len
= count_trail_chars(user_buffer
, max
);
1784 /* Read variable name */
1786 len
= strn_len(&user_buffer
[i
], sizeof(name
) - 1);
1790 memset(name
, 0, sizeof(name
));
1791 if (copy_from_user(name
, &user_buffer
[i
], len
))
1796 len
= count_trail_chars(&user_buffer
[i
], max
);
1803 printk(KERN_DEBUG
"pktgen: t=%s, count=%lu\n",
1804 name
, (unsigned long)count
);
1807 pr_err("ERROR: No thread\n");
1812 pg_result
= &(t
->result
[0]);
1814 if (!strcmp(name
, "add_device")) {
1817 len
= strn_len(&user_buffer
[i
], sizeof(f
) - 1);
1822 if (copy_from_user(f
, &user_buffer
[i
], len
))
1825 mutex_lock(&pktgen_thread_lock
);
1826 pktgen_add_device(t
, f
);
1827 mutex_unlock(&pktgen_thread_lock
);
1829 sprintf(pg_result
, "OK: add_device=%s", f
);
1833 if (!strcmp(name
, "rem_device_all")) {
1834 mutex_lock(&pktgen_thread_lock
);
1835 t
->control
|= T_REMDEVALL
;
1836 mutex_unlock(&pktgen_thread_lock
);
1837 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1839 sprintf(pg_result
, "OK: rem_device_all");
1843 if (!strcmp(name
, "max_before_softirq")) {
1844 sprintf(pg_result
, "OK: Note! max_before_softirq is obsoleted -- Do not use");
1854 static int pktgen_thread_open(struct inode
*inode
, struct file
*file
)
1856 return single_open(file
, pktgen_thread_show
, PDE(inode
)->data
);
1859 static const struct file_operations pktgen_thread_fops
= {
1860 .owner
= THIS_MODULE
,
1861 .open
= pktgen_thread_open
,
1863 .llseek
= seq_lseek
,
1864 .write
= pktgen_thread_write
,
1865 .release
= single_release
,
1868 /* Think find or remove for NN */
1869 static struct pktgen_dev
*__pktgen_NN_threads(const char *ifname
, int remove
)
1871 struct pktgen_thread
*t
;
1872 struct pktgen_dev
*pkt_dev
= NULL
;
1873 bool exact
= (remove
== FIND
);
1875 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
1876 pkt_dev
= pktgen_find_dev(t
, ifname
, exact
);
1880 pkt_dev
->removal_mark
= 1;
1881 t
->control
|= T_REMDEV
;
1891 * mark a device for removal
1893 static void pktgen_mark_device(const char *ifname
)
1895 struct pktgen_dev
*pkt_dev
= NULL
;
1896 const int max_tries
= 10, msec_per_try
= 125;
1899 mutex_lock(&pktgen_thread_lock
);
1900 pr_debug("%s: marking %s for removal\n", __func__
, ifname
);
1904 pkt_dev
= __pktgen_NN_threads(ifname
, REMOVE
);
1905 if (pkt_dev
== NULL
)
1906 break; /* success */
1908 mutex_unlock(&pktgen_thread_lock
);
1909 pr_debug("%s: waiting for %s to disappear....\n",
1911 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try
));
1912 mutex_lock(&pktgen_thread_lock
);
1914 if (++i
>= max_tries
) {
1915 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1916 __func__
, msec_per_try
* i
, ifname
);
1922 mutex_unlock(&pktgen_thread_lock
);
1925 static void pktgen_change_name(struct net_device
*dev
)
1927 struct pktgen_thread
*t
;
1929 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
1930 struct pktgen_dev
*pkt_dev
;
1932 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
1933 if (pkt_dev
->odev
!= dev
)
1936 remove_proc_entry(pkt_dev
->entry
->name
, pg_proc_dir
);
1938 pkt_dev
->entry
= proc_create_data(dev
->name
, 0600,
1942 if (!pkt_dev
->entry
)
1943 pr_err("can't move proc entry for '%s'\n",
1950 static int pktgen_device_event(struct notifier_block
*unused
,
1951 unsigned long event
, void *ptr
)
1953 struct net_device
*dev
= ptr
;
1955 if (!net_eq(dev_net(dev
), &init_net
))
1958 /* It is OK that we do not hold the group lock right now,
1959 * as we run under the RTNL lock.
1963 case NETDEV_CHANGENAME
:
1964 pktgen_change_name(dev
);
1967 case NETDEV_UNREGISTER
:
1968 pktgen_mark_device(dev
->name
);
1975 static struct net_device
*pktgen_dev_get_by_name(struct pktgen_dev
*pkt_dev
,
1981 for (i
= 0; ifname
[i
] != '@'; i
++) {
1989 return dev_get_by_name(&init_net
, b
);
1993 /* Associate pktgen_dev with a device. */
1995 static int pktgen_setup_dev(struct pktgen_dev
*pkt_dev
, const char *ifname
)
1997 struct net_device
*odev
;
2000 /* Clean old setups */
2001 if (pkt_dev
->odev
) {
2002 dev_put(pkt_dev
->odev
);
2003 pkt_dev
->odev
= NULL
;
2006 odev
= pktgen_dev_get_by_name(pkt_dev
, ifname
);
2008 pr_err("no such netdevice: \"%s\"\n", ifname
);
2012 if (odev
->type
!= ARPHRD_ETHER
) {
2013 pr_err("not an ethernet device: \"%s\"\n", ifname
);
2015 } else if (!netif_running(odev
)) {
2016 pr_err("device is down: \"%s\"\n", ifname
);
2019 pkt_dev
->odev
= odev
;
2027 /* Read pkt_dev from the interface and set up internal pktgen_dev
2028 * structure to have the right information to create/send packets
2030 static void pktgen_setup_inject(struct pktgen_dev
*pkt_dev
)
2034 if (!pkt_dev
->odev
) {
2035 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
2036 sprintf(pkt_dev
->result
,
2037 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2041 /* make sure that we don't pick a non-existing transmit queue */
2042 ntxq
= pkt_dev
->odev
->real_num_tx_queues
;
2044 if (ntxq
<= pkt_dev
->queue_map_min
) {
2045 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2046 pkt_dev
->queue_map_min
, (ntxq
?: 1) - 1, ntxq
,
2048 pkt_dev
->queue_map_min
= ntxq
- 1;
2050 if (pkt_dev
->queue_map_max
>= ntxq
) {
2051 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2052 pkt_dev
->queue_map_max
, (ntxq
?: 1) - 1, ntxq
,
2054 pkt_dev
->queue_map_max
= ntxq
- 1;
2057 /* Default to the interface's mac if not explicitly set. */
2059 if (is_zero_ether_addr(pkt_dev
->src_mac
))
2060 memcpy(&(pkt_dev
->hh
[6]), pkt_dev
->odev
->dev_addr
, ETH_ALEN
);
2062 /* Set up Dest MAC */
2063 memcpy(&(pkt_dev
->hh
[0]), pkt_dev
->dst_mac
, ETH_ALEN
);
2065 /* Set up pkt size */
2066 pkt_dev
->cur_pkt_size
= pkt_dev
->min_pkt_size
;
2068 if (pkt_dev
->flags
& F_IPV6
) {
2070 * Skip this automatic address setting until locks or functions
2075 int i
, set
= 0, err
= 1;
2076 struct inet6_dev
*idev
;
2078 for (i
= 0; i
< IN6_ADDR_HSIZE
; i
++)
2079 if (pkt_dev
->cur_in6_saddr
.s6_addr
[i
]) {
2087 * Use linklevel address if unconfigured.
2089 * use ipv6_get_lladdr if/when it's get exported
2093 idev
= __in6_dev_get(pkt_dev
->odev
);
2095 struct inet6_ifaddr
*ifp
;
2097 read_lock_bh(&idev
->lock
);
2098 for (ifp
= idev
->addr_list
; ifp
;
2099 ifp
= ifp
->if_next
) {
2100 if (ifp
->scope
== IFA_LINK
&&
2101 !(ifp
->flags
& IFA_F_TENTATIVE
)) {
2102 ipv6_addr_copy(&pkt_dev
->
2109 read_unlock_bh(&idev
->lock
);
2113 pr_err("ERROR: IPv6 link address not available\n");
2117 pkt_dev
->saddr_min
= 0;
2118 pkt_dev
->saddr_max
= 0;
2119 if (strlen(pkt_dev
->src_min
) == 0) {
2121 struct in_device
*in_dev
;
2124 in_dev
= __in_dev_get_rcu(pkt_dev
->odev
);
2126 if (in_dev
->ifa_list
) {
2127 pkt_dev
->saddr_min
=
2128 in_dev
->ifa_list
->ifa_address
;
2129 pkt_dev
->saddr_max
= pkt_dev
->saddr_min
;
2134 pkt_dev
->saddr_min
= in_aton(pkt_dev
->src_min
);
2135 pkt_dev
->saddr_max
= in_aton(pkt_dev
->src_max
);
2138 pkt_dev
->daddr_min
= in_aton(pkt_dev
->dst_min
);
2139 pkt_dev
->daddr_max
= in_aton(pkt_dev
->dst_max
);
2141 /* Initialize current values. */
2142 pkt_dev
->cur_dst_mac_offset
= 0;
2143 pkt_dev
->cur_src_mac_offset
= 0;
2144 pkt_dev
->cur_saddr
= pkt_dev
->saddr_min
;
2145 pkt_dev
->cur_daddr
= pkt_dev
->daddr_min
;
2146 pkt_dev
->cur_udp_dst
= pkt_dev
->udp_dst_min
;
2147 pkt_dev
->cur_udp_src
= pkt_dev
->udp_src_min
;
2148 pkt_dev
->nflows
= 0;
2152 static void spin(struct pktgen_dev
*pkt_dev
, ktime_t spin_until
)
2154 ktime_t start_time
, end_time
;
2156 struct hrtimer_sleeper t
;
2158 hrtimer_init_on_stack(&t
.timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_ABS
);
2159 hrtimer_set_expires(&t
.timer
, spin_until
);
2161 remaining
= ktime_to_ns(hrtimer_expires_remaining(&t
.timer
));
2162 if (remaining
<= 0) {
2163 pkt_dev
->next_tx
= ktime_add_ns(spin_until
, pkt_dev
->delay
);
2167 start_time
= ktime_now();
2168 if (remaining
< 100000)
2169 ndelay(remaining
); /* really small just spin */
2171 /* see do_nanosleep */
2172 hrtimer_init_sleeper(&t
, current
);
2174 set_current_state(TASK_INTERRUPTIBLE
);
2175 hrtimer_start_expires(&t
.timer
, HRTIMER_MODE_ABS
);
2176 if (!hrtimer_active(&t
.timer
))
2182 hrtimer_cancel(&t
.timer
);
2183 } while (t
.task
&& pkt_dev
->running
&& !signal_pending(current
));
2184 __set_current_state(TASK_RUNNING
);
2186 end_time
= ktime_now();
2188 pkt_dev
->idle_acc
+= ktime_to_ns(ktime_sub(end_time
, start_time
));
2189 pkt_dev
->next_tx
= ktime_add_ns(spin_until
, pkt_dev
->delay
);
2192 static inline void set_pkt_overhead(struct pktgen_dev
*pkt_dev
)
2194 pkt_dev
->pkt_overhead
= 0;
2195 pkt_dev
->pkt_overhead
+= pkt_dev
->nr_labels
*sizeof(u32
);
2196 pkt_dev
->pkt_overhead
+= VLAN_TAG_SIZE(pkt_dev
);
2197 pkt_dev
->pkt_overhead
+= SVLAN_TAG_SIZE(pkt_dev
);
2200 static inline int f_seen(const struct pktgen_dev
*pkt_dev
, int flow
)
2202 return !!(pkt_dev
->flows
[flow
].flags
& F_INIT
);
2205 static inline int f_pick(struct pktgen_dev
*pkt_dev
)
2207 int flow
= pkt_dev
->curfl
;
2209 if (pkt_dev
->flags
& F_FLOW_SEQ
) {
2210 if (pkt_dev
->flows
[flow
].count
>= pkt_dev
->lflow
) {
2212 pkt_dev
->flows
[flow
].count
= 0;
2213 pkt_dev
->flows
[flow
].flags
= 0;
2214 pkt_dev
->curfl
+= 1;
2215 if (pkt_dev
->curfl
>= pkt_dev
->cflows
)
2216 pkt_dev
->curfl
= 0; /*reset */
2219 flow
= random32() % pkt_dev
->cflows
;
2220 pkt_dev
->curfl
= flow
;
2222 if (pkt_dev
->flows
[flow
].count
> pkt_dev
->lflow
) {
2223 pkt_dev
->flows
[flow
].count
= 0;
2224 pkt_dev
->flows
[flow
].flags
= 0;
2228 return pkt_dev
->curfl
;
2233 /* If there was already an IPSEC SA, we keep it as is, else
2234 * we go look for it ...
2236 #define DUMMY_MARK 0
2237 static void get_ipsec_sa(struct pktgen_dev
*pkt_dev
, int flow
)
2239 struct xfrm_state
*x
= pkt_dev
->flows
[flow
].x
;
2241 /*slow path: we dont already have xfrm_state*/
2242 x
= xfrm_stateonly_find(&init_net
, DUMMY_MARK
,
2243 (xfrm_address_t
*)&pkt_dev
->cur_daddr
,
2244 (xfrm_address_t
*)&pkt_dev
->cur_saddr
,
2247 pkt_dev
->ipsproto
, 0);
2249 pkt_dev
->flows
[flow
].x
= x
;
2250 set_pkt_overhead(pkt_dev
);
2251 pkt_dev
->pkt_overhead
+= x
->props
.header_len
;
2257 static void set_cur_queue_map(struct pktgen_dev
*pkt_dev
)
2260 if (pkt_dev
->flags
& F_QUEUE_MAP_CPU
)
2261 pkt_dev
->cur_queue_map
= smp_processor_id();
2263 else if (pkt_dev
->queue_map_min
<= pkt_dev
->queue_map_max
) {
2265 if (pkt_dev
->flags
& F_QUEUE_MAP_RND
) {
2267 (pkt_dev
->queue_map_max
-
2268 pkt_dev
->queue_map_min
+ 1)
2269 + pkt_dev
->queue_map_min
;
2271 t
= pkt_dev
->cur_queue_map
+ 1;
2272 if (t
> pkt_dev
->queue_map_max
)
2273 t
= pkt_dev
->queue_map_min
;
2275 pkt_dev
->cur_queue_map
= t
;
2277 pkt_dev
->cur_queue_map
= pkt_dev
->cur_queue_map
% pkt_dev
->odev
->real_num_tx_queues
;
2280 /* Increment/randomize headers according to flags and current values
2281 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2283 static void mod_cur_headers(struct pktgen_dev
*pkt_dev
)
2289 if (pkt_dev
->cflows
)
2290 flow
= f_pick(pkt_dev
);
2292 /* Deal with source MAC */
2293 if (pkt_dev
->src_mac_count
> 1) {
2297 if (pkt_dev
->flags
& F_MACSRC_RND
)
2298 mc
= random32() % pkt_dev
->src_mac_count
;
2300 mc
= pkt_dev
->cur_src_mac_offset
++;
2301 if (pkt_dev
->cur_src_mac_offset
>=
2302 pkt_dev
->src_mac_count
)
2303 pkt_dev
->cur_src_mac_offset
= 0;
2306 tmp
= pkt_dev
->src_mac
[5] + (mc
& 0xFF);
2307 pkt_dev
->hh
[11] = tmp
;
2308 tmp
= (pkt_dev
->src_mac
[4] + ((mc
>> 8) & 0xFF) + (tmp
>> 8));
2309 pkt_dev
->hh
[10] = tmp
;
2310 tmp
= (pkt_dev
->src_mac
[3] + ((mc
>> 16) & 0xFF) + (tmp
>> 8));
2311 pkt_dev
->hh
[9] = tmp
;
2312 tmp
= (pkt_dev
->src_mac
[2] + ((mc
>> 24) & 0xFF) + (tmp
>> 8));
2313 pkt_dev
->hh
[8] = tmp
;
2314 tmp
= (pkt_dev
->src_mac
[1] + (tmp
>> 8));
2315 pkt_dev
->hh
[7] = tmp
;
2318 /* Deal with Destination MAC */
2319 if (pkt_dev
->dst_mac_count
> 1) {
2323 if (pkt_dev
->flags
& F_MACDST_RND
)
2324 mc
= random32() % pkt_dev
->dst_mac_count
;
2327 mc
= pkt_dev
->cur_dst_mac_offset
++;
2328 if (pkt_dev
->cur_dst_mac_offset
>=
2329 pkt_dev
->dst_mac_count
) {
2330 pkt_dev
->cur_dst_mac_offset
= 0;
2334 tmp
= pkt_dev
->dst_mac
[5] + (mc
& 0xFF);
2335 pkt_dev
->hh
[5] = tmp
;
2336 tmp
= (pkt_dev
->dst_mac
[4] + ((mc
>> 8) & 0xFF) + (tmp
>> 8));
2337 pkt_dev
->hh
[4] = tmp
;
2338 tmp
= (pkt_dev
->dst_mac
[3] + ((mc
>> 16) & 0xFF) + (tmp
>> 8));
2339 pkt_dev
->hh
[3] = tmp
;
2340 tmp
= (pkt_dev
->dst_mac
[2] + ((mc
>> 24) & 0xFF) + (tmp
>> 8));
2341 pkt_dev
->hh
[2] = tmp
;
2342 tmp
= (pkt_dev
->dst_mac
[1] + (tmp
>> 8));
2343 pkt_dev
->hh
[1] = tmp
;
2346 if (pkt_dev
->flags
& F_MPLS_RND
) {
2348 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
2349 if (pkt_dev
->labels
[i
] & MPLS_STACK_BOTTOM
)
2350 pkt_dev
->labels
[i
] = MPLS_STACK_BOTTOM
|
2351 ((__force __be32
)random32() &
2355 if ((pkt_dev
->flags
& F_VID_RND
) && (pkt_dev
->vlan_id
!= 0xffff)) {
2356 pkt_dev
->vlan_id
= random32() & (4096-1);
2359 if ((pkt_dev
->flags
& F_SVID_RND
) && (pkt_dev
->svlan_id
!= 0xffff)) {
2360 pkt_dev
->svlan_id
= random32() & (4096 - 1);
2363 if (pkt_dev
->udp_src_min
< pkt_dev
->udp_src_max
) {
2364 if (pkt_dev
->flags
& F_UDPSRC_RND
)
2365 pkt_dev
->cur_udp_src
= random32() %
2366 (pkt_dev
->udp_src_max
- pkt_dev
->udp_src_min
)
2367 + pkt_dev
->udp_src_min
;
2370 pkt_dev
->cur_udp_src
++;
2371 if (pkt_dev
->cur_udp_src
>= pkt_dev
->udp_src_max
)
2372 pkt_dev
->cur_udp_src
= pkt_dev
->udp_src_min
;
2376 if (pkt_dev
->udp_dst_min
< pkt_dev
->udp_dst_max
) {
2377 if (pkt_dev
->flags
& F_UDPDST_RND
) {
2378 pkt_dev
->cur_udp_dst
= random32() %
2379 (pkt_dev
->udp_dst_max
- pkt_dev
->udp_dst_min
)
2380 + pkt_dev
->udp_dst_min
;
2382 pkt_dev
->cur_udp_dst
++;
2383 if (pkt_dev
->cur_udp_dst
>= pkt_dev
->udp_dst_max
)
2384 pkt_dev
->cur_udp_dst
= pkt_dev
->udp_dst_min
;
2388 if (!(pkt_dev
->flags
& F_IPV6
)) {
2390 imn
= ntohl(pkt_dev
->saddr_min
);
2391 imx
= ntohl(pkt_dev
->saddr_max
);
2394 if (pkt_dev
->flags
& F_IPSRC_RND
)
2395 t
= random32() % (imx
- imn
) + imn
;
2397 t
= ntohl(pkt_dev
->cur_saddr
);
2403 pkt_dev
->cur_saddr
= htonl(t
);
2406 if (pkt_dev
->cflows
&& f_seen(pkt_dev
, flow
)) {
2407 pkt_dev
->cur_daddr
= pkt_dev
->flows
[flow
].cur_daddr
;
2409 imn
= ntohl(pkt_dev
->daddr_min
);
2410 imx
= ntohl(pkt_dev
->daddr_max
);
2414 if (pkt_dev
->flags
& F_IPDST_RND
) {
2416 t
= random32() % (imx
- imn
) + imn
;
2419 while (ipv4_is_loopback(s
) ||
2420 ipv4_is_multicast(s
) ||
2421 ipv4_is_lbcast(s
) ||
2422 ipv4_is_zeronet(s
) ||
2423 ipv4_is_local_multicast(s
)) {
2424 t
= random32() % (imx
- imn
) + imn
;
2427 pkt_dev
->cur_daddr
= s
;
2429 t
= ntohl(pkt_dev
->cur_daddr
);
2434 pkt_dev
->cur_daddr
= htonl(t
);
2437 if (pkt_dev
->cflows
) {
2438 pkt_dev
->flows
[flow
].flags
|= F_INIT
;
2439 pkt_dev
->flows
[flow
].cur_daddr
=
2442 if (pkt_dev
->flags
& F_IPSEC_ON
)
2443 get_ipsec_sa(pkt_dev
, flow
);
2448 } else { /* IPV6 * */
2450 if (pkt_dev
->min_in6_daddr
.s6_addr32
[0] == 0 &&
2451 pkt_dev
->min_in6_daddr
.s6_addr32
[1] == 0 &&
2452 pkt_dev
->min_in6_daddr
.s6_addr32
[2] == 0 &&
2453 pkt_dev
->min_in6_daddr
.s6_addr32
[3] == 0) ;
2457 /* Only random destinations yet */
2459 for (i
= 0; i
< 4; i
++) {
2460 pkt_dev
->cur_in6_daddr
.s6_addr32
[i
] =
2461 (((__force __be32
)random32() |
2462 pkt_dev
->min_in6_daddr
.s6_addr32
[i
]) &
2463 pkt_dev
->max_in6_daddr
.s6_addr32
[i
]);
2468 if (pkt_dev
->min_pkt_size
< pkt_dev
->max_pkt_size
) {
2470 if (pkt_dev
->flags
& F_TXSIZE_RND
) {
2472 (pkt_dev
->max_pkt_size
- pkt_dev
->min_pkt_size
)
2473 + pkt_dev
->min_pkt_size
;
2475 t
= pkt_dev
->cur_pkt_size
+ 1;
2476 if (t
> pkt_dev
->max_pkt_size
)
2477 t
= pkt_dev
->min_pkt_size
;
2479 pkt_dev
->cur_pkt_size
= t
;
2482 set_cur_queue_map(pkt_dev
);
2484 pkt_dev
->flows
[flow
].count
++;
2489 static int pktgen_output_ipsec(struct sk_buff
*skb
, struct pktgen_dev
*pkt_dev
)
2491 struct xfrm_state
*x
= pkt_dev
->flows
[pkt_dev
->curfl
].x
;
2497 /* XXX: we dont support tunnel mode for now until
2498 * we resolve the dst issue */
2499 if (x
->props
.mode
!= XFRM_MODE_TRANSPORT
)
2502 spin_lock(&x
->lock
);
2505 err
= x
->outer_mode
->output(x
, skb
);
2508 err
= x
->type
->output(x
, skb
);
2512 x
->curlft
.bytes
+= skb
->len
;
2513 x
->curlft
.packets
++;
2515 spin_unlock(&x
->lock
);
2519 static void free_SAs(struct pktgen_dev
*pkt_dev
)
2521 if (pkt_dev
->cflows
) {
2522 /* let go of the SAs if we have them */
2524 for (i
= 0; i
< pkt_dev
->cflows
; i
++) {
2525 struct xfrm_state
*x
= pkt_dev
->flows
[i
].x
;
2528 pkt_dev
->flows
[i
].x
= NULL
;
2534 static int process_ipsec(struct pktgen_dev
*pkt_dev
,
2535 struct sk_buff
*skb
, __be16 protocol
)
2537 if (pkt_dev
->flags
& F_IPSEC_ON
) {
2538 struct xfrm_state
*x
= pkt_dev
->flows
[pkt_dev
->curfl
].x
;
2543 nhead
= x
->props
.header_len
- skb_headroom(skb
);
2545 ret
= pskb_expand_head(skb
, nhead
, 0, GFP_ATOMIC
);
2547 pr_err("Error expanding ipsec packet %d\n",
2553 /* ipsec is not expecting ll header */
2554 skb_pull(skb
, ETH_HLEN
);
2555 ret
= pktgen_output_ipsec(skb
, pkt_dev
);
2557 pr_err("Error creating ipsec packet %d\n", ret
);
2561 eth
= (__u8
*) skb_push(skb
, ETH_HLEN
);
2562 memcpy(eth
, pkt_dev
->hh
, 12);
2563 *(u16
*) ð
[12] = protocol
;
2573 static void mpls_push(__be32
*mpls
, struct pktgen_dev
*pkt_dev
)
2576 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
2577 *mpls
++ = pkt_dev
->labels
[i
] & ~MPLS_STACK_BOTTOM
;
2580 *mpls
|= MPLS_STACK_BOTTOM
;
2583 static inline __be16
build_tci(unsigned int id
, unsigned int cfi
,
2586 return htons(id
| (cfi
<< 12) | (prio
<< 13));
2589 static struct sk_buff
*fill_packet_ipv4(struct net_device
*odev
,
2590 struct pktgen_dev
*pkt_dev
)
2592 struct sk_buff
*skb
= NULL
;
2594 struct udphdr
*udph
;
2597 struct pktgen_hdr
*pgh
= NULL
;
2598 __be16 protocol
= htons(ETH_P_IP
);
2600 __be16
*vlan_tci
= NULL
; /* Encapsulates priority and VLAN ID */
2601 __be16
*vlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for VLAN tag */
2602 __be16
*svlan_tci
= NULL
; /* Encapsulates priority and SVLAN ID */
2603 __be16
*svlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for SVLAN tag */
2606 if (pkt_dev
->nr_labels
)
2607 protocol
= htons(ETH_P_MPLS_UC
);
2609 if (pkt_dev
->vlan_id
!= 0xffff)
2610 protocol
= htons(ETH_P_8021Q
);
2612 /* Update any of the values, used when we're incrementing various
2615 mod_cur_headers(pkt_dev
);
2616 queue_map
= pkt_dev
->cur_queue_map
;
2618 datalen
= (odev
->hard_header_len
+ 16) & ~0xf;
2620 if (pkt_dev
->flags
& F_NODE
) {
2623 if (pkt_dev
->node
>= 0)
2624 node
= pkt_dev
->node
;
2626 node
= numa_node_id();
2628 skb
= __alloc_skb(NET_SKB_PAD
+ pkt_dev
->cur_pkt_size
+ 64
2629 + datalen
+ pkt_dev
->pkt_overhead
, GFP_NOWAIT
, 0, node
);
2631 skb_reserve(skb
, NET_SKB_PAD
);
2636 skb
= __netdev_alloc_skb(odev
,
2637 pkt_dev
->cur_pkt_size
+ 64
2638 + datalen
+ pkt_dev
->pkt_overhead
, GFP_NOWAIT
);
2641 sprintf(pkt_dev
->result
, "No memory");
2645 skb_reserve(skb
, datalen
);
2647 /* Reserve for ethernet and IP header */
2648 eth
= (__u8
*) skb_push(skb
, 14);
2649 mpls
= (__be32
*)skb_put(skb
, pkt_dev
->nr_labels
*sizeof(__u32
));
2650 if (pkt_dev
->nr_labels
)
2651 mpls_push(mpls
, pkt_dev
);
2653 if (pkt_dev
->vlan_id
!= 0xffff) {
2654 if (pkt_dev
->svlan_id
!= 0xffff) {
2655 svlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2656 *svlan_tci
= build_tci(pkt_dev
->svlan_id
,
2659 svlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2660 *svlan_encapsulated_proto
= htons(ETH_P_8021Q
);
2662 vlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2663 *vlan_tci
= build_tci(pkt_dev
->vlan_id
,
2666 vlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2667 *vlan_encapsulated_proto
= htons(ETH_P_IP
);
2670 skb
->network_header
= skb
->tail
;
2671 skb
->transport_header
= skb
->network_header
+ sizeof(struct iphdr
);
2672 skb_put(skb
, sizeof(struct iphdr
) + sizeof(struct udphdr
));
2673 skb_set_queue_mapping(skb
, queue_map
);
2675 udph
= udp_hdr(skb
);
2677 memcpy(eth
, pkt_dev
->hh
, 12);
2678 *(__be16
*) & eth
[12] = protocol
;
2680 /* Eth + IPh + UDPh + mpls */
2681 datalen
= pkt_dev
->cur_pkt_size
- 14 - 20 - 8 -
2682 pkt_dev
->pkt_overhead
;
2683 if (datalen
< sizeof(struct pktgen_hdr
))
2684 datalen
= sizeof(struct pktgen_hdr
);
2686 udph
->source
= htons(pkt_dev
->cur_udp_src
);
2687 udph
->dest
= htons(pkt_dev
->cur_udp_dst
);
2688 udph
->len
= htons(datalen
+ 8); /* DATA + udphdr */
2689 udph
->check
= 0; /* No checksum */
2694 iph
->tos
= pkt_dev
->tos
;
2695 iph
->protocol
= IPPROTO_UDP
; /* UDP */
2696 iph
->saddr
= pkt_dev
->cur_saddr
;
2697 iph
->daddr
= pkt_dev
->cur_daddr
;
2698 iph
->id
= htons(pkt_dev
->ip_id
);
2701 iplen
= 20 + 8 + datalen
;
2702 iph
->tot_len
= htons(iplen
);
2704 iph
->check
= ip_fast_csum((void *)iph
, iph
->ihl
);
2705 skb
->protocol
= protocol
;
2706 skb
->mac_header
= (skb
->network_header
- ETH_HLEN
-
2707 pkt_dev
->pkt_overhead
);
2709 skb
->pkt_type
= PACKET_HOST
;
2711 if (pkt_dev
->nfrags
<= 0) {
2712 pgh
= (struct pktgen_hdr
*)skb_put(skb
, datalen
);
2713 memset(pgh
+ 1, 0, datalen
- sizeof(struct pktgen_hdr
));
2715 int frags
= pkt_dev
->nfrags
;
2718 pgh
= (struct pktgen_hdr
*)(((char *)(udph
)) + 8);
2720 if (frags
> MAX_SKB_FRAGS
)
2721 frags
= MAX_SKB_FRAGS
;
2722 if (datalen
> frags
* PAGE_SIZE
) {
2723 len
= datalen
- frags
* PAGE_SIZE
;
2724 memset(skb_put(skb
, len
), 0, len
);
2725 datalen
= frags
* PAGE_SIZE
;
2729 while (datalen
> 0) {
2730 struct page
*page
= alloc_pages(GFP_KERNEL
| __GFP_ZERO
, 0);
2731 skb_shinfo(skb
)->frags
[i
].page
= page
;
2732 skb_shinfo(skb
)->frags
[i
].page_offset
= 0;
2733 skb_shinfo(skb
)->frags
[i
].size
=
2734 (datalen
< PAGE_SIZE
? datalen
: PAGE_SIZE
);
2735 datalen
-= skb_shinfo(skb
)->frags
[i
].size
;
2736 skb
->len
+= skb_shinfo(skb
)->frags
[i
].size
;
2737 skb
->data_len
+= skb_shinfo(skb
)->frags
[i
].size
;
2739 skb_shinfo(skb
)->nr_frags
= i
;
2748 rem
= skb_shinfo(skb
)->frags
[i
- 1].size
/ 2;
2752 skb_shinfo(skb
)->frags
[i
- 1].size
-= rem
;
2754 skb_shinfo(skb
)->frags
[i
] =
2755 skb_shinfo(skb
)->frags
[i
- 1];
2756 get_page(skb_shinfo(skb
)->frags
[i
].page
);
2757 skb_shinfo(skb
)->frags
[i
].page
=
2758 skb_shinfo(skb
)->frags
[i
- 1].page
;
2759 skb_shinfo(skb
)->frags
[i
].page_offset
+=
2760 skb_shinfo(skb
)->frags
[i
- 1].size
;
2761 skb_shinfo(skb
)->frags
[i
].size
= rem
;
2763 skb_shinfo(skb
)->nr_frags
= i
;
2767 /* Stamp the time, and sequence number,
2768 * convert them to network byte order
2771 struct timeval timestamp
;
2773 pgh
->pgh_magic
= htonl(PKTGEN_MAGIC
);
2774 pgh
->seq_num
= htonl(pkt_dev
->seq_num
);
2776 do_gettimeofday(×tamp
);
2777 pgh
->tv_sec
= htonl(timestamp
.tv_sec
);
2778 pgh
->tv_usec
= htonl(timestamp
.tv_usec
);
2782 if (!process_ipsec(pkt_dev
, skb
, protocol
))
2790 * scan_ip6, fmt_ip taken from dietlibc-0.21
2791 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2793 * Slightly modified for kernel.
2794 * Should be candidate for net/ipv4/utils.c
2798 static unsigned int scan_ip6(const char *s
, char ip
[16])
2801 unsigned int len
= 0;
2804 unsigned int prefixlen
= 0;
2805 unsigned int suffixlen
= 0;
2809 for (i
= 0; i
< 16; i
++)
2815 if (s
[1] == ':') { /* Found "::", skip to part 2 */
2823 u
= simple_strtoul(s
, &pos
, 16);
2827 if (prefixlen
== 12 && s
[i
] == '.') {
2829 /* the last 4 bytes may be written as IPv4 address */
2832 memcpy((struct in_addr
*)(ip
+ 12), &tmp
, sizeof(tmp
));
2835 ip
[prefixlen
++] = (u
>> 8);
2836 ip
[prefixlen
++] = (u
& 255);
2839 if (prefixlen
== 16)
2843 /* part 2, after "::" */
2850 } else if (suffixlen
!= 0)
2853 u
= simple_strtol(s
, &pos
, 16);
2860 if (suffixlen
+ prefixlen
<= 12 && s
[i
] == '.') {
2862 memcpy((struct in_addr
*)(suffix
+ suffixlen
), &tmp
,
2868 suffix
[suffixlen
++] = (u
>> 8);
2869 suffix
[suffixlen
++] = (u
& 255);
2872 if (prefixlen
+ suffixlen
== 16)
2875 for (i
= 0; i
< suffixlen
; i
++)
2876 ip
[16 - suffixlen
+ i
] = suffix
[i
];
2880 static char tohex(char hexdigit
)
2882 return hexdigit
> 9 ? hexdigit
+ 'a' - 10 : hexdigit
+ '0';
2885 static int fmt_xlong(char *s
, unsigned int i
)
2888 *s
= tohex((i
>> 12) & 0xf);
2889 if (s
!= bak
|| *s
!= '0')
2891 *s
= tohex((i
>> 8) & 0xf);
2892 if (s
!= bak
|| *s
!= '0')
2894 *s
= tohex((i
>> 4) & 0xf);
2895 if (s
!= bak
|| *s
!= '0')
2897 *s
= tohex(i
& 0xf);
2901 static unsigned int fmt_ip6(char *s
, const char ip
[16])
2906 unsigned int compressing
;
2911 for (j
= 0; j
< 16; j
+= 2) {
2913 #ifdef V4MAPPEDPREFIX
2914 if (j
== 12 && !memcmp(ip
, V4mappedprefix
, 12)) {
2915 inet_ntoa_r(*(struct in_addr
*)(ip
+ 12), s
);
2920 temp
= ((unsigned long)(unsigned char)ip
[j
] << 8) +
2921 (unsigned long)(unsigned char)ip
[j
+ 1];
2936 i
= fmt_xlong(s
, temp
);
2953 static struct sk_buff
*fill_packet_ipv6(struct net_device
*odev
,
2954 struct pktgen_dev
*pkt_dev
)
2956 struct sk_buff
*skb
= NULL
;
2958 struct udphdr
*udph
;
2960 struct ipv6hdr
*iph
;
2961 struct pktgen_hdr
*pgh
= NULL
;
2962 __be16 protocol
= htons(ETH_P_IPV6
);
2964 __be16
*vlan_tci
= NULL
; /* Encapsulates priority and VLAN ID */
2965 __be16
*vlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for VLAN tag */
2966 __be16
*svlan_tci
= NULL
; /* Encapsulates priority and SVLAN ID */
2967 __be16
*svlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for SVLAN tag */
2970 if (pkt_dev
->nr_labels
)
2971 protocol
= htons(ETH_P_MPLS_UC
);
2973 if (pkt_dev
->vlan_id
!= 0xffff)
2974 protocol
= htons(ETH_P_8021Q
);
2976 /* Update any of the values, used when we're incrementing various
2979 mod_cur_headers(pkt_dev
);
2980 queue_map
= pkt_dev
->cur_queue_map
;
2982 skb
= __netdev_alloc_skb(odev
,
2983 pkt_dev
->cur_pkt_size
+ 64
2984 + 16 + pkt_dev
->pkt_overhead
, GFP_NOWAIT
);
2986 sprintf(pkt_dev
->result
, "No memory");
2990 skb_reserve(skb
, 16);
2992 /* Reserve for ethernet and IP header */
2993 eth
= (__u8
*) skb_push(skb
, 14);
2994 mpls
= (__be32
*)skb_put(skb
, pkt_dev
->nr_labels
*sizeof(__u32
));
2995 if (pkt_dev
->nr_labels
)
2996 mpls_push(mpls
, pkt_dev
);
2998 if (pkt_dev
->vlan_id
!= 0xffff) {
2999 if (pkt_dev
->svlan_id
!= 0xffff) {
3000 svlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3001 *svlan_tci
= build_tci(pkt_dev
->svlan_id
,
3004 svlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3005 *svlan_encapsulated_proto
= htons(ETH_P_8021Q
);
3007 vlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3008 *vlan_tci
= build_tci(pkt_dev
->vlan_id
,
3011 vlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3012 *vlan_encapsulated_proto
= htons(ETH_P_IPV6
);
3015 skb
->network_header
= skb
->tail
;
3016 skb
->transport_header
= skb
->network_header
+ sizeof(struct ipv6hdr
);
3017 skb_put(skb
, sizeof(struct ipv6hdr
) + sizeof(struct udphdr
));
3018 skb_set_queue_mapping(skb
, queue_map
);
3019 iph
= ipv6_hdr(skb
);
3020 udph
= udp_hdr(skb
);
3022 memcpy(eth
, pkt_dev
->hh
, 12);
3023 *(__be16
*) ð
[12] = protocol
;
3025 /* Eth + IPh + UDPh + mpls */
3026 datalen
= pkt_dev
->cur_pkt_size
- 14 -
3027 sizeof(struct ipv6hdr
) - sizeof(struct udphdr
) -
3028 pkt_dev
->pkt_overhead
;
3030 if (datalen
< sizeof(struct pktgen_hdr
)) {
3031 datalen
= sizeof(struct pktgen_hdr
);
3032 if (net_ratelimit())
3033 pr_info("increased datalen to %d\n", datalen
);
3036 udph
->source
= htons(pkt_dev
->cur_udp_src
);
3037 udph
->dest
= htons(pkt_dev
->cur_udp_dst
);
3038 udph
->len
= htons(datalen
+ sizeof(struct udphdr
));
3039 udph
->check
= 0; /* No checksum */
3041 *(__be32
*) iph
= htonl(0x60000000); /* Version + flow */
3043 if (pkt_dev
->traffic_class
) {
3044 /* Version + traffic class + flow (0) */
3045 *(__be32
*)iph
|= htonl(0x60000000 | (pkt_dev
->traffic_class
<< 20));
3048 iph
->hop_limit
= 32;
3050 iph
->payload_len
= htons(sizeof(struct udphdr
) + datalen
);
3051 iph
->nexthdr
= IPPROTO_UDP
;
3053 ipv6_addr_copy(&iph
->daddr
, &pkt_dev
->cur_in6_daddr
);
3054 ipv6_addr_copy(&iph
->saddr
, &pkt_dev
->cur_in6_saddr
);
3056 skb
->mac_header
= (skb
->network_header
- ETH_HLEN
-
3057 pkt_dev
->pkt_overhead
);
3058 skb
->protocol
= protocol
;
3060 skb
->pkt_type
= PACKET_HOST
;
3062 if (pkt_dev
->nfrags
<= 0)
3063 pgh
= (struct pktgen_hdr
*)skb_put(skb
, datalen
);
3065 int frags
= pkt_dev
->nfrags
;
3068 pgh
= (struct pktgen_hdr
*)(((char *)(udph
)) + 8);
3070 if (frags
> MAX_SKB_FRAGS
)
3071 frags
= MAX_SKB_FRAGS
;
3072 if (datalen
> frags
* PAGE_SIZE
) {
3073 skb_put(skb
, datalen
- frags
* PAGE_SIZE
);
3074 datalen
= frags
* PAGE_SIZE
;
3078 while (datalen
> 0) {
3079 struct page
*page
= alloc_pages(GFP_KERNEL
, 0);
3080 skb_shinfo(skb
)->frags
[i
].page
= page
;
3081 skb_shinfo(skb
)->frags
[i
].page_offset
= 0;
3082 skb_shinfo(skb
)->frags
[i
].size
=
3083 (datalen
< PAGE_SIZE
? datalen
: PAGE_SIZE
);
3084 datalen
-= skb_shinfo(skb
)->frags
[i
].size
;
3085 skb
->len
+= skb_shinfo(skb
)->frags
[i
].size
;
3086 skb
->data_len
+= skb_shinfo(skb
)->frags
[i
].size
;
3088 skb_shinfo(skb
)->nr_frags
= i
;
3097 rem
= skb_shinfo(skb
)->frags
[i
- 1].size
/ 2;
3101 skb_shinfo(skb
)->frags
[i
- 1].size
-= rem
;
3103 skb_shinfo(skb
)->frags
[i
] =
3104 skb_shinfo(skb
)->frags
[i
- 1];
3105 get_page(skb_shinfo(skb
)->frags
[i
].page
);
3106 skb_shinfo(skb
)->frags
[i
].page
=
3107 skb_shinfo(skb
)->frags
[i
- 1].page
;
3108 skb_shinfo(skb
)->frags
[i
].page_offset
+=
3109 skb_shinfo(skb
)->frags
[i
- 1].size
;
3110 skb_shinfo(skb
)->frags
[i
].size
= rem
;
3112 skb_shinfo(skb
)->nr_frags
= i
;
3116 /* Stamp the time, and sequence number,
3117 * convert them to network byte order
3118 * should we update cloned packets too ?
3121 struct timeval timestamp
;
3123 pgh
->pgh_magic
= htonl(PKTGEN_MAGIC
);
3124 pgh
->seq_num
= htonl(pkt_dev
->seq_num
);
3126 do_gettimeofday(×tamp
);
3127 pgh
->tv_sec
= htonl(timestamp
.tv_sec
);
3128 pgh
->tv_usec
= htonl(timestamp
.tv_usec
);
3130 /* pkt_dev->seq_num++; FF: you really mean this? */
3135 static struct sk_buff
*fill_packet(struct net_device
*odev
,
3136 struct pktgen_dev
*pkt_dev
)
3138 if (pkt_dev
->flags
& F_IPV6
)
3139 return fill_packet_ipv6(odev
, pkt_dev
);
3141 return fill_packet_ipv4(odev
, pkt_dev
);
3144 static void pktgen_clear_counters(struct pktgen_dev
*pkt_dev
)
3146 pkt_dev
->seq_num
= 1;
3147 pkt_dev
->idle_acc
= 0;
3149 pkt_dev
->tx_bytes
= 0;
3150 pkt_dev
->errors
= 0;
3153 /* Set up structure for sending pkts, clear counters */
3155 static void pktgen_run(struct pktgen_thread
*t
)
3157 struct pktgen_dev
*pkt_dev
;
3163 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3166 * setup odev and create initial packet.
3168 pktgen_setup_inject(pkt_dev
);
3170 if (pkt_dev
->odev
) {
3171 pktgen_clear_counters(pkt_dev
);
3172 pkt_dev
->running
= 1; /* Cranke yeself! */
3173 pkt_dev
->skb
= NULL
;
3174 pkt_dev
->started_at
=
3175 pkt_dev
->next_tx
= ktime_now();
3177 set_pkt_overhead(pkt_dev
);
3179 strcpy(pkt_dev
->result
, "Starting");
3182 strcpy(pkt_dev
->result
, "Error starting");
3186 t
->control
&= ~(T_STOP
);
3189 static void pktgen_stop_all_threads_ifs(void)
3191 struct pktgen_thread
*t
;
3195 mutex_lock(&pktgen_thread_lock
);
3197 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3198 t
->control
|= T_STOP
;
3200 mutex_unlock(&pktgen_thread_lock
);
3203 static int thread_is_running(const struct pktgen_thread
*t
)
3205 const struct pktgen_dev
*pkt_dev
;
3207 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
3208 if (pkt_dev
->running
)
3213 static int pktgen_wait_thread_run(struct pktgen_thread
*t
)
3217 while (thread_is_running(t
)) {
3221 msleep_interruptible(100);
3223 if (signal_pending(current
))
3233 static int pktgen_wait_all_threads_run(void)
3235 struct pktgen_thread
*t
;
3238 mutex_lock(&pktgen_thread_lock
);
3240 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
3241 sig
= pktgen_wait_thread_run(t
);
3247 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3248 t
->control
|= (T_STOP
);
3250 mutex_unlock(&pktgen_thread_lock
);
3254 static void pktgen_run_all_threads(void)
3256 struct pktgen_thread
*t
;
3260 mutex_lock(&pktgen_thread_lock
);
3262 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3263 t
->control
|= (T_RUN
);
3265 mutex_unlock(&pktgen_thread_lock
);
3267 /* Propagate thread->control */
3268 schedule_timeout_interruptible(msecs_to_jiffies(125));
3270 pktgen_wait_all_threads_run();
3273 static void pktgen_reset_all_threads(void)
3275 struct pktgen_thread
*t
;
3279 mutex_lock(&pktgen_thread_lock
);
3281 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3282 t
->control
|= (T_REMDEVALL
);
3284 mutex_unlock(&pktgen_thread_lock
);
3286 /* Propagate thread->control */
3287 schedule_timeout_interruptible(msecs_to_jiffies(125));
3289 pktgen_wait_all_threads_run();
3292 static void show_results(struct pktgen_dev
*pkt_dev
, int nr_frags
)
3294 __u64 bps
, mbps
, pps
;
3295 char *p
= pkt_dev
->result
;
3296 ktime_t elapsed
= ktime_sub(pkt_dev
->stopped_at
,
3297 pkt_dev
->started_at
);
3298 ktime_t idle
= ns_to_ktime(pkt_dev
->idle_acc
);
3300 p
+= sprintf(p
, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
3301 (unsigned long long)ktime_to_us(elapsed
),
3302 (unsigned long long)ktime_to_us(ktime_sub(elapsed
, idle
)),
3303 (unsigned long long)ktime_to_us(idle
),
3304 (unsigned long long)pkt_dev
->sofar
,
3305 pkt_dev
->cur_pkt_size
, nr_frags
);
3307 pps
= div64_u64(pkt_dev
->sofar
* NSEC_PER_SEC
,
3308 ktime_to_ns(elapsed
));
3310 bps
= pps
* 8 * pkt_dev
->cur_pkt_size
;
3313 do_div(mbps
, 1000000);
3314 p
+= sprintf(p
, " %llupps %lluMb/sec (%llubps) errors: %llu",
3315 (unsigned long long)pps
,
3316 (unsigned long long)mbps
,
3317 (unsigned long long)bps
,
3318 (unsigned long long)pkt_dev
->errors
);
3321 /* Set stopped-at timer, remove from running list, do counters & statistics */
3322 static int pktgen_stop_device(struct pktgen_dev
*pkt_dev
)
3324 int nr_frags
= pkt_dev
->skb
? skb_shinfo(pkt_dev
->skb
)->nr_frags
: -1;
3326 if (!pkt_dev
->running
) {
3327 pr_warning("interface: %s is already stopped\n",
3332 kfree_skb(pkt_dev
->skb
);
3333 pkt_dev
->skb
= NULL
;
3334 pkt_dev
->stopped_at
= ktime_now();
3335 pkt_dev
->running
= 0;
3337 show_results(pkt_dev
, nr_frags
);
3342 static struct pktgen_dev
*next_to_run(struct pktgen_thread
*t
)
3344 struct pktgen_dev
*pkt_dev
, *best
= NULL
;
3348 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3349 if (!pkt_dev
->running
)
3353 else if (ktime_lt(pkt_dev
->next_tx
, best
->next_tx
))
3360 static void pktgen_stop(struct pktgen_thread
*t
)
3362 struct pktgen_dev
*pkt_dev
;
3368 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3369 pktgen_stop_device(pkt_dev
);
3376 * one of our devices needs to be removed - find it
3379 static void pktgen_rem_one_if(struct pktgen_thread
*t
)
3381 struct list_head
*q
, *n
;
3382 struct pktgen_dev
*cur
;
3388 list_for_each_safe(q
, n
, &t
->if_list
) {
3389 cur
= list_entry(q
, struct pktgen_dev
, list
);
3391 if (!cur
->removal_mark
)
3394 kfree_skb(cur
->skb
);
3397 pktgen_remove_device(t
, cur
);
3405 static void pktgen_rem_all_ifs(struct pktgen_thread
*t
)
3407 struct list_head
*q
, *n
;
3408 struct pktgen_dev
*cur
;
3412 /* Remove all devices, free mem */
3416 list_for_each_safe(q
, n
, &t
->if_list
) {
3417 cur
= list_entry(q
, struct pktgen_dev
, list
);
3419 kfree_skb(cur
->skb
);
3422 pktgen_remove_device(t
, cur
);
3428 static void pktgen_rem_thread(struct pktgen_thread
*t
)
3430 /* Remove from the thread list */
3432 remove_proc_entry(t
->tsk
->comm
, pg_proc_dir
);
3434 mutex_lock(&pktgen_thread_lock
);
3436 list_del(&t
->th_list
);
3438 mutex_unlock(&pktgen_thread_lock
);
3441 static void pktgen_resched(struct pktgen_dev
*pkt_dev
)
3443 ktime_t idle_start
= ktime_now();
3445 pkt_dev
->idle_acc
+= ktime_to_ns(ktime_sub(ktime_now(), idle_start
));
3448 static void pktgen_wait_for_skb(struct pktgen_dev
*pkt_dev
)
3450 ktime_t idle_start
= ktime_now();
3452 while (atomic_read(&(pkt_dev
->skb
->users
)) != 1) {
3453 if (signal_pending(current
))
3457 pktgen_resched(pkt_dev
);
3461 pkt_dev
->idle_acc
+= ktime_to_ns(ktime_sub(ktime_now(), idle_start
));
3464 static void pktgen_xmit(struct pktgen_dev
*pkt_dev
)
3466 struct net_device
*odev
= pkt_dev
->odev
;
3467 netdev_tx_t (*xmit
)(struct sk_buff
*, struct net_device
*)
3468 = odev
->netdev_ops
->ndo_start_xmit
;
3469 struct netdev_queue
*txq
;
3473 /* If device is offline, then don't send */
3474 if (unlikely(!netif_running(odev
) || !netif_carrier_ok(odev
))) {
3475 pktgen_stop_device(pkt_dev
);
3479 /* This is max DELAY, this has special meaning of
3482 if (unlikely(pkt_dev
->delay
== ULLONG_MAX
)) {
3483 pkt_dev
->next_tx
= ktime_add_ns(ktime_now(), ULONG_MAX
);
3487 /* If no skb or clone count exhausted then get new one */
3488 if (!pkt_dev
->skb
|| (pkt_dev
->last_ok
&&
3489 ++pkt_dev
->clone_count
>= pkt_dev
->clone_skb
)) {
3490 /* build a new pkt */
3491 kfree_skb(pkt_dev
->skb
);
3493 pkt_dev
->skb
= fill_packet(odev
, pkt_dev
);
3494 if (pkt_dev
->skb
== NULL
) {
3495 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
3497 pkt_dev
->clone_count
--; /* back out increment, OOM */
3500 pkt_dev
->last_pkt_size
= pkt_dev
->skb
->len
;
3501 pkt_dev
->allocated_skbs
++;
3502 pkt_dev
->clone_count
= 0; /* reset counter */
3505 if (pkt_dev
->delay
&& pkt_dev
->last_ok
)
3506 spin(pkt_dev
, pkt_dev
->next_tx
);
3508 queue_map
= skb_get_queue_mapping(pkt_dev
->skb
);
3509 txq
= netdev_get_tx_queue(odev
, queue_map
);
3511 __netif_tx_lock_bh(txq
);
3513 if (unlikely(netif_tx_queue_stopped(txq
) || netif_tx_queue_frozen(txq
))) {
3514 ret
= NETDEV_TX_BUSY
;
3515 pkt_dev
->last_ok
= 0;
3518 atomic_inc(&(pkt_dev
->skb
->users
));
3519 ret
= (*xmit
)(pkt_dev
->skb
, odev
);
3523 txq_trans_update(txq
);
3524 pkt_dev
->last_ok
= 1;
3527 pkt_dev
->tx_bytes
+= pkt_dev
->last_pkt_size
;
3531 case NET_XMIT_POLICED
:
3532 /* skb has been consumed */
3535 default: /* Drivers are not supposed to return other values! */
3536 if (net_ratelimit())
3537 pr_info("pktgen: %s xmit error: %d\n",
3538 pkt_dev
->odevname
, ret
);
3541 case NETDEV_TX_LOCKED
:
3542 case NETDEV_TX_BUSY
:
3543 /* Retry it next time */
3544 atomic_dec(&(pkt_dev
->skb
->users
));
3545 pkt_dev
->last_ok
= 0;
3548 __netif_tx_unlock_bh(txq
);
3550 /* If pkt_dev->count is zero, then run forever */
3551 if ((pkt_dev
->count
!= 0) && (pkt_dev
->sofar
>= pkt_dev
->count
)) {
3552 pktgen_wait_for_skb(pkt_dev
);
3554 /* Done with this */
3555 pktgen_stop_device(pkt_dev
);
3560 * Main loop of the thread goes here
3563 static int pktgen_thread_worker(void *arg
)
3566 struct pktgen_thread
*t
= arg
;
3567 struct pktgen_dev
*pkt_dev
= NULL
;
3570 BUG_ON(smp_processor_id() != cpu
);
3572 init_waitqueue_head(&t
->queue
);
3573 complete(&t
->start_done
);
3575 pr_debug("starting pktgen/%d: pid=%d\n", cpu
, task_pid_nr(current
));
3577 set_current_state(TASK_INTERRUPTIBLE
);
3581 while (!kthread_should_stop()) {
3582 pkt_dev
= next_to_run(t
);
3584 if (unlikely(!pkt_dev
&& t
->control
== 0)) {
3585 wait_event_interruptible_timeout(t
->queue
,
3592 __set_current_state(TASK_RUNNING
);
3594 if (likely(pkt_dev
)) {
3595 pktgen_xmit(pkt_dev
);
3598 pktgen_resched(pkt_dev
);
3603 if (t
->control
& T_STOP
) {
3605 t
->control
&= ~(T_STOP
);
3608 if (t
->control
& T_RUN
) {
3610 t
->control
&= ~(T_RUN
);
3613 if (t
->control
& T_REMDEVALL
) {
3614 pktgen_rem_all_ifs(t
);
3615 t
->control
&= ~(T_REMDEVALL
);
3618 if (t
->control
& T_REMDEV
) {
3619 pktgen_rem_one_if(t
);
3620 t
->control
&= ~(T_REMDEV
);
3625 set_current_state(TASK_INTERRUPTIBLE
);
3628 pr_debug("%s stopping all device\n", t
->tsk
->comm
);
3631 pr_debug("%s removing all device\n", t
->tsk
->comm
);
3632 pktgen_rem_all_ifs(t
);
3634 pr_debug("%s removing thread\n", t
->tsk
->comm
);
3635 pktgen_rem_thread(t
);
3640 static struct pktgen_dev
*pktgen_find_dev(struct pktgen_thread
*t
,
3641 const char *ifname
, bool exact
)
3643 struct pktgen_dev
*p
, *pkt_dev
= NULL
;
3644 size_t len
= strlen(ifname
);
3647 list_for_each_entry(p
, &t
->if_list
, list
)
3648 if (strncmp(p
->odevname
, ifname
, len
) == 0) {
3649 if (p
->odevname
[len
]) {
3650 if (exact
|| p
->odevname
[len
] != '@')
3658 pr_debug("find_dev(%s) returning %p\n", ifname
, pkt_dev
);
3663 * Adds a dev at front of if_list.
3666 static int add_dev_to_thread(struct pktgen_thread
*t
,
3667 struct pktgen_dev
*pkt_dev
)
3673 if (pkt_dev
->pg_thread
) {
3674 pr_err("ERROR: already assigned to a thread\n");
3679 list_add(&pkt_dev
->list
, &t
->if_list
);
3680 pkt_dev
->pg_thread
= t
;
3681 pkt_dev
->running
= 0;
3688 /* Called under thread lock */
3690 static int pktgen_add_device(struct pktgen_thread
*t
, const char *ifname
)
3692 struct pktgen_dev
*pkt_dev
;
3694 int node
= cpu_to_node(t
->cpu
);
3696 /* We don't allow a device to be on several threads */
3698 pkt_dev
= __pktgen_NN_threads(ifname
, FIND
);
3700 pr_err("ERROR: interface already used\n");
3704 pkt_dev
= kzalloc_node(sizeof(struct pktgen_dev
), GFP_KERNEL
, node
);
3708 strcpy(pkt_dev
->odevname
, ifname
);
3709 pkt_dev
->flows
= vmalloc_node(MAX_CFLOWS
* sizeof(struct flow_state
),
3711 if (pkt_dev
->flows
== NULL
) {
3715 memset(pkt_dev
->flows
, 0, MAX_CFLOWS
* sizeof(struct flow_state
));
3717 pkt_dev
->removal_mark
= 0;
3718 pkt_dev
->min_pkt_size
= ETH_ZLEN
;
3719 pkt_dev
->max_pkt_size
= ETH_ZLEN
;
3720 pkt_dev
->nfrags
= 0;
3721 pkt_dev
->clone_skb
= pg_clone_skb_d
;
3722 pkt_dev
->delay
= pg_delay_d
;
3723 pkt_dev
->count
= pg_count_d
;
3725 pkt_dev
->udp_src_min
= 9; /* sink port */
3726 pkt_dev
->udp_src_max
= 9;
3727 pkt_dev
->udp_dst_min
= 9;
3728 pkt_dev
->udp_dst_max
= 9;
3730 pkt_dev
->vlan_p
= 0;
3731 pkt_dev
->vlan_cfi
= 0;
3732 pkt_dev
->vlan_id
= 0xffff;
3733 pkt_dev
->svlan_p
= 0;
3734 pkt_dev
->svlan_cfi
= 0;
3735 pkt_dev
->svlan_id
= 0xffff;
3738 err
= pktgen_setup_dev(pkt_dev
, ifname
);
3742 pkt_dev
->entry
= proc_create_data(ifname
, 0600, pg_proc_dir
,
3743 &pktgen_if_fops
, pkt_dev
);
3744 if (!pkt_dev
->entry
) {
3745 pr_err("cannot create %s/%s procfs entry\n",
3746 PG_PROC_DIR
, ifname
);
3751 pkt_dev
->ipsmode
= XFRM_MODE_TRANSPORT
;
3752 pkt_dev
->ipsproto
= IPPROTO_ESP
;
3755 return add_dev_to_thread(t
, pkt_dev
);
3757 dev_put(pkt_dev
->odev
);
3762 vfree(pkt_dev
->flows
);
3767 static int __init
pktgen_create_thread(int cpu
)
3769 struct pktgen_thread
*t
;
3770 struct proc_dir_entry
*pe
;
3771 struct task_struct
*p
;
3773 t
= kzalloc_node(sizeof(struct pktgen_thread
), GFP_KERNEL
,
3776 pr_err("ERROR: out of memory, can't create new thread\n");
3780 spin_lock_init(&t
->if_lock
);
3783 INIT_LIST_HEAD(&t
->if_list
);
3785 list_add_tail(&t
->th_list
, &pktgen_threads
);
3786 init_completion(&t
->start_done
);
3788 p
= kthread_create(pktgen_thread_worker
, t
, "kpktgend_%d", cpu
);
3790 pr_err("kernel_thread() failed for cpu %d\n", t
->cpu
);
3791 list_del(&t
->th_list
);
3795 kthread_bind(p
, cpu
);
3798 pe
= proc_create_data(t
->tsk
->comm
, 0600, pg_proc_dir
,
3799 &pktgen_thread_fops
, t
);
3801 pr_err("cannot create %s/%s procfs entry\n",
3802 PG_PROC_DIR
, t
->tsk
->comm
);
3804 list_del(&t
->th_list
);
3810 wait_for_completion(&t
->start_done
);
3816 * Removes a device from the thread if_list.
3818 static void _rem_dev_from_if_list(struct pktgen_thread
*t
,
3819 struct pktgen_dev
*pkt_dev
)
3821 struct list_head
*q
, *n
;
3822 struct pktgen_dev
*p
;
3824 list_for_each_safe(q
, n
, &t
->if_list
) {
3825 p
= list_entry(q
, struct pktgen_dev
, list
);
3831 static int pktgen_remove_device(struct pktgen_thread
*t
,
3832 struct pktgen_dev
*pkt_dev
)
3835 pr_debug("remove_device pkt_dev=%p\n", pkt_dev
);
3837 if (pkt_dev
->running
) {
3838 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
3839 pktgen_stop_device(pkt_dev
);
3842 /* Dis-associate from the interface */
3844 if (pkt_dev
->odev
) {
3845 dev_put(pkt_dev
->odev
);
3846 pkt_dev
->odev
= NULL
;
3849 /* And update the thread if_list */
3851 _rem_dev_from_if_list(t
, pkt_dev
);
3854 remove_proc_entry(pkt_dev
->entry
->name
, pg_proc_dir
);
3859 vfree(pkt_dev
->flows
);
3864 static int __init
pg_init(void)
3867 struct proc_dir_entry
*pe
;
3869 pr_info("%s", version
);
3871 pg_proc_dir
= proc_mkdir(PG_PROC_DIR
, init_net
.proc_net
);
3875 pe
= proc_create(PGCTRL
, 0600, pg_proc_dir
, &pktgen_fops
);
3877 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL
);
3878 proc_net_remove(&init_net
, PG_PROC_DIR
);
3882 /* Register us to receive netdevice events */
3883 register_netdevice_notifier(&pktgen_notifier_block
);
3885 for_each_online_cpu(cpu
) {
3888 err
= pktgen_create_thread(cpu
);
3890 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3894 if (list_empty(&pktgen_threads
)) {
3895 pr_err("ERROR: Initialization failed for all threads\n");
3896 unregister_netdevice_notifier(&pktgen_notifier_block
);
3897 remove_proc_entry(PGCTRL
, pg_proc_dir
);
3898 proc_net_remove(&init_net
, PG_PROC_DIR
);
3905 static void __exit
pg_cleanup(void)
3907 struct pktgen_thread
*t
;
3908 struct list_head
*q
, *n
;
3910 /* Stop all interfaces & threads */
3912 list_for_each_safe(q
, n
, &pktgen_threads
) {
3913 t
= list_entry(q
, struct pktgen_thread
, th_list
);
3914 kthread_stop(t
->tsk
);
3918 /* Un-register us from receiving netdevice events */
3919 unregister_netdevice_notifier(&pktgen_notifier_block
);
3921 /* Clean up proc file system */
3922 remove_proc_entry(PGCTRL
, pg_proc_dir
);
3923 proc_net_remove(&init_net
, PG_PROC_DIR
);
3926 module_init(pg_init
);
3927 module_exit(pg_cleanup
);
3929 MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
3930 MODULE_DESCRIPTION("Packet Generator tool");
3931 MODULE_LICENSE("GPL");
3932 MODULE_VERSION(VERSION
);
3933 module_param(pg_count_d
, int, 0);
3934 MODULE_PARM_DESC(pg_count_d
, "Default number of packets to inject");
3935 module_param(pg_delay_d
, int, 0);
3936 MODULE_PARM_DESC(pg_delay_d
, "Default delay between packets (nanoseconds)");
3937 module_param(pg_clone_skb_d
, int, 0);
3938 MODULE_PARM_DESC(pg_clone_skb_d
, "Default number of copies of the same packet");
3939 module_param(debug
, int, 0);
3940 MODULE_PARM_DESC(debug
, "Enable debugging of pktgen module");