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 */
255 u64 delay
; /* nano-seconds */
257 __u64 count
; /* Default No packets to send */
258 __u64 sofar
; /* How many pkts we've sent so far */
259 __u64 tx_bytes
; /* How many bytes we've transmitted */
260 __u64 errors
; /* Errors when trying to transmit, */
262 /* runtime counters relating to clone_skb */
264 __u64 allocated_skbs
;
266 int last_ok
; /* Was last skb sent?
267 * Or a failed transmit of some sort?
268 * This will keep sequence numbers in order
273 u64 idle_acc
; /* nano-seconds */
278 * Use multiple SKBs during packet gen.
279 * If this number is greater than 1, then
280 * that many copies of the same packet will be
281 * sent before a new packet is allocated.
282 * If you want to send 1024 identical packets
283 * before creating a new packet,
284 * set clone_skb to 1024.
287 char dst_min
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
288 char dst_max
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
289 char src_min
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
290 char src_max
[IP_NAME_SZ
]; /* IP, ie 1.2.3.4 */
292 struct in6_addr in6_saddr
;
293 struct in6_addr in6_daddr
;
294 struct in6_addr cur_in6_daddr
;
295 struct in6_addr cur_in6_saddr
;
297 struct in6_addr min_in6_daddr
;
298 struct in6_addr max_in6_daddr
;
299 struct in6_addr min_in6_saddr
;
300 struct in6_addr max_in6_saddr
;
302 /* If we're doing ranges, random or incremental, then this
303 * defines the min/max for those ranges.
305 __be32 saddr_min
; /* inclusive, source IP address */
306 __be32 saddr_max
; /* exclusive, source IP address */
307 __be32 daddr_min
; /* inclusive, dest IP address */
308 __be32 daddr_max
; /* exclusive, dest IP address */
310 __u16 udp_src_min
; /* inclusive, source UDP port */
311 __u16 udp_src_max
; /* exclusive, source UDP port */
312 __u16 udp_dst_min
; /* inclusive, dest UDP port */
313 __u16 udp_dst_max
; /* exclusive, dest UDP port */
316 __u8 tos
; /* six MSB of (former) IPv4 TOS
317 are for dscp codepoint */
318 __u8 traffic_class
; /* ditto for the (former) Traffic Class in IPv6
319 (see RFC 3260, sec. 4) */
322 unsigned nr_labels
; /* Depth of stack, 0 = no MPLS */
323 __be32 labels
[MAX_MPLS_LABELS
];
325 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
328 __u16 vlan_id
; /* 0xffff means no vlan tag */
332 __u16 svlan_id
; /* 0xffff means no svlan tag */
334 __u32 src_mac_count
; /* How many MACs to iterate through */
335 __u32 dst_mac_count
; /* How many MACs to iterate through */
337 unsigned char dst_mac
[ETH_ALEN
];
338 unsigned char src_mac
[ETH_ALEN
];
340 __u32 cur_dst_mac_offset
;
341 __u32 cur_src_mac_offset
;
353 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
355 We fill in SRC address later
356 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
360 __u16 pad
; /* pad out the hh struct to an even 16 bytes */
362 struct sk_buff
*skb
; /* skb we are to transmit next, used for when we
363 * are transmitting the same one multiple times
365 struct net_device
*odev
; /* The out-going device.
366 * Note that the device should have it's
367 * pg_info pointer pointing back to this
369 * Set when the user specifies the out-going
370 * device name (not when the inject is
371 * started as it used to do.)
374 struct flow_state
*flows
;
375 unsigned cflows
; /* Concurrent flows (config) */
376 unsigned lflow
; /* Flow length (config) */
377 unsigned nflows
; /* accumulated flows (stats) */
378 unsigned curfl
; /* current sequenced flow (state)*/
382 __u32 skb_priority
; /* skb priority field */
383 int node
; /* Memory node */
386 __u8 ipsmode
; /* IPSEC mode (config) */
387 __u8 ipsproto
; /* IPSEC type (config) */
399 static bool pktgen_exiting __read_mostly
;
401 struct pktgen_thread
{
402 spinlock_t if_lock
; /* for list of devices */
403 struct list_head if_list
; /* All device here */
404 struct list_head th_list
;
405 struct task_struct
*tsk
;
408 /* Field for thread to receive "posted" events terminate,
414 wait_queue_head_t queue
;
415 struct completion start_done
;
421 static inline ktime_t
ktime_now(void)
426 return timespec_to_ktime(ts
);
429 /* This works even if 32 bit because of careful byte order choice */
430 static inline int ktime_lt(const ktime_t cmp1
, const ktime_t cmp2
)
432 return cmp1
.tv64
< cmp2
.tv64
;
435 static const char version
[] =
436 "Packet Generator for packet performance testing. "
437 "Version: " VERSION
"\n";
439 static int pktgen_remove_device(struct pktgen_thread
*t
, struct pktgen_dev
*i
);
440 static int pktgen_add_device(struct pktgen_thread
*t
, const char *ifname
);
441 static struct pktgen_dev
*pktgen_find_dev(struct pktgen_thread
*t
,
442 const char *ifname
, bool exact
);
443 static int pktgen_device_event(struct notifier_block
*, unsigned long, void *);
444 static void pktgen_run_all_threads(void);
445 static void pktgen_reset_all_threads(void);
446 static void pktgen_stop_all_threads_ifs(void);
448 static void pktgen_stop(struct pktgen_thread
*t
);
449 static void pktgen_clear_counters(struct pktgen_dev
*pkt_dev
);
451 static unsigned int scan_ip6(const char *s
, char ip
[16]);
452 static unsigned int fmt_ip6(char *s
, const char ip
[16]);
454 /* Module parameters, defaults. */
455 static int pg_count_d __read_mostly
= 1000;
456 static int pg_delay_d __read_mostly
;
457 static int pg_clone_skb_d __read_mostly
;
458 static int debug __read_mostly
;
460 static DEFINE_MUTEX(pktgen_thread_lock
);
461 static LIST_HEAD(pktgen_threads
);
463 static struct notifier_block pktgen_notifier_block
= {
464 .notifier_call
= pktgen_device_event
,
468 * /proc handling functions
472 static int pgctrl_show(struct seq_file
*seq
, void *v
)
474 seq_puts(seq
, version
);
478 static ssize_t
pgctrl_write(struct file
*file
, const char __user
*buf
,
479 size_t count
, loff_t
*ppos
)
484 if (!capable(CAP_NET_ADMIN
)) {
489 if (count
> sizeof(data
))
490 count
= sizeof(data
);
492 if (copy_from_user(data
, buf
, count
)) {
496 data
[count
- 1] = 0; /* Make string */
498 if (!strcmp(data
, "stop"))
499 pktgen_stop_all_threads_ifs();
501 else if (!strcmp(data
, "start"))
502 pktgen_run_all_threads();
504 else if (!strcmp(data
, "reset"))
505 pktgen_reset_all_threads();
508 pr_warning("Unknown command: %s\n", data
);
516 static int pgctrl_open(struct inode
*inode
, struct file
*file
)
518 return single_open(file
, pgctrl_show
, PDE(inode
)->data
);
521 static const struct file_operations pktgen_fops
= {
522 .owner
= THIS_MODULE
,
526 .write
= pgctrl_write
,
527 .release
= single_release
,
530 static int pktgen_if_show(struct seq_file
*seq
, void *v
)
532 const struct pktgen_dev
*pkt_dev
= seq
->private;
537 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
538 (unsigned long long)pkt_dev
->count
, pkt_dev
->min_pkt_size
,
539 pkt_dev
->max_pkt_size
);
542 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
543 pkt_dev
->nfrags
, (unsigned long long) pkt_dev
->delay
,
544 pkt_dev
->clone_skb
, pkt_dev
->odevname
);
546 seq_printf(seq
, " flows: %u flowlen: %u\n", pkt_dev
->cflows
,
550 " queue_map_min: %u queue_map_max: %u\n",
551 pkt_dev
->queue_map_min
,
552 pkt_dev
->queue_map_max
);
554 if (pkt_dev
->skb_priority
)
555 seq_printf(seq
, " skb_priority: %u\n",
556 pkt_dev
->skb_priority
);
558 if (pkt_dev
->flags
& F_IPV6
) {
559 char b1
[128], b2
[128], b3
[128];
560 fmt_ip6(b1
, pkt_dev
->in6_saddr
.s6_addr
);
561 fmt_ip6(b2
, pkt_dev
->min_in6_saddr
.s6_addr
);
562 fmt_ip6(b3
, pkt_dev
->max_in6_saddr
.s6_addr
);
564 " saddr: %s min_saddr: %s max_saddr: %s\n", b1
,
567 fmt_ip6(b1
, pkt_dev
->in6_daddr
.s6_addr
);
568 fmt_ip6(b2
, pkt_dev
->min_in6_daddr
.s6_addr
);
569 fmt_ip6(b3
, pkt_dev
->max_in6_daddr
.s6_addr
);
571 " daddr: %s min_daddr: %s max_daddr: %s\n", b1
,
576 " dst_min: %s dst_max: %s\n",
577 pkt_dev
->dst_min
, pkt_dev
->dst_max
);
579 " src_min: %s src_max: %s\n",
580 pkt_dev
->src_min
, pkt_dev
->src_max
);
583 seq_puts(seq
, " src_mac: ");
585 seq_printf(seq
, "%pM ",
586 is_zero_ether_addr(pkt_dev
->src_mac
) ?
587 pkt_dev
->odev
->dev_addr
: pkt_dev
->src_mac
);
589 seq_printf(seq
, "dst_mac: ");
590 seq_printf(seq
, "%pM\n", pkt_dev
->dst_mac
);
593 " udp_src_min: %d udp_src_max: %d"
594 " udp_dst_min: %d udp_dst_max: %d\n",
595 pkt_dev
->udp_src_min
, pkt_dev
->udp_src_max
,
596 pkt_dev
->udp_dst_min
, pkt_dev
->udp_dst_max
);
599 " src_mac_count: %d dst_mac_count: %d\n",
600 pkt_dev
->src_mac_count
, pkt_dev
->dst_mac_count
);
602 if (pkt_dev
->nr_labels
) {
604 seq_printf(seq
, " mpls: ");
605 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
606 seq_printf(seq
, "%08x%s", ntohl(pkt_dev
->labels
[i
]),
607 i
== pkt_dev
->nr_labels
-1 ? "\n" : ", ");
610 if (pkt_dev
->vlan_id
!= 0xffff)
611 seq_printf(seq
, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
612 pkt_dev
->vlan_id
, pkt_dev
->vlan_p
,
615 if (pkt_dev
->svlan_id
!= 0xffff)
616 seq_printf(seq
, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
617 pkt_dev
->svlan_id
, pkt_dev
->svlan_p
,
621 seq_printf(seq
, " tos: 0x%02x\n", pkt_dev
->tos
);
623 if (pkt_dev
->traffic_class
)
624 seq_printf(seq
, " traffic_class: 0x%02x\n", pkt_dev
->traffic_class
);
626 if (pkt_dev
->node
>= 0)
627 seq_printf(seq
, " node: %d\n", pkt_dev
->node
);
629 seq_printf(seq
, " Flags: ");
631 if (pkt_dev
->flags
& F_IPV6
)
632 seq_printf(seq
, "IPV6 ");
634 if (pkt_dev
->flags
& F_IPSRC_RND
)
635 seq_printf(seq
, "IPSRC_RND ");
637 if (pkt_dev
->flags
& F_IPDST_RND
)
638 seq_printf(seq
, "IPDST_RND ");
640 if (pkt_dev
->flags
& F_TXSIZE_RND
)
641 seq_printf(seq
, "TXSIZE_RND ");
643 if (pkt_dev
->flags
& F_UDPSRC_RND
)
644 seq_printf(seq
, "UDPSRC_RND ");
646 if (pkt_dev
->flags
& F_UDPDST_RND
)
647 seq_printf(seq
, "UDPDST_RND ");
649 if (pkt_dev
->flags
& F_MPLS_RND
)
650 seq_printf(seq
, "MPLS_RND ");
652 if (pkt_dev
->flags
& F_QUEUE_MAP_RND
)
653 seq_printf(seq
, "QUEUE_MAP_RND ");
655 if (pkt_dev
->flags
& F_QUEUE_MAP_CPU
)
656 seq_printf(seq
, "QUEUE_MAP_CPU ");
658 if (pkt_dev
->cflows
) {
659 if (pkt_dev
->flags
& F_FLOW_SEQ
)
660 seq_printf(seq
, "FLOW_SEQ "); /*in sequence flows*/
662 seq_printf(seq
, "FLOW_RND ");
666 if (pkt_dev
->flags
& F_IPSEC_ON
)
667 seq_printf(seq
, "IPSEC ");
670 if (pkt_dev
->flags
& F_MACSRC_RND
)
671 seq_printf(seq
, "MACSRC_RND ");
673 if (pkt_dev
->flags
& F_MACDST_RND
)
674 seq_printf(seq
, "MACDST_RND ");
676 if (pkt_dev
->flags
& F_VID_RND
)
677 seq_printf(seq
, "VID_RND ");
679 if (pkt_dev
->flags
& F_SVID_RND
)
680 seq_printf(seq
, "SVID_RND ");
682 if (pkt_dev
->flags
& F_NODE
)
683 seq_printf(seq
, "NODE_ALLOC ");
687 /* not really stopped, more like last-running-at */
688 stopped
= pkt_dev
->running
? ktime_now() : pkt_dev
->stopped_at
;
689 idle
= pkt_dev
->idle_acc
;
690 do_div(idle
, NSEC_PER_USEC
);
693 "Current:\n pkts-sofar: %llu errors: %llu\n",
694 (unsigned long long)pkt_dev
->sofar
,
695 (unsigned long long)pkt_dev
->errors
);
698 " started: %lluus stopped: %lluus idle: %lluus\n",
699 (unsigned long long) ktime_to_us(pkt_dev
->started_at
),
700 (unsigned long long) ktime_to_us(stopped
),
701 (unsigned long long) idle
);
704 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
705 pkt_dev
->seq_num
, pkt_dev
->cur_dst_mac_offset
,
706 pkt_dev
->cur_src_mac_offset
);
708 if (pkt_dev
->flags
& F_IPV6
) {
709 char b1
[128], b2
[128];
710 fmt_ip6(b1
, pkt_dev
->cur_in6_daddr
.s6_addr
);
711 fmt_ip6(b2
, pkt_dev
->cur_in6_saddr
.s6_addr
);
712 seq_printf(seq
, " cur_saddr: %s cur_daddr: %s\n", b2
, b1
);
714 seq_printf(seq
, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
715 pkt_dev
->cur_saddr
, pkt_dev
->cur_daddr
);
717 seq_printf(seq
, " cur_udp_dst: %d cur_udp_src: %d\n",
718 pkt_dev
->cur_udp_dst
, pkt_dev
->cur_udp_src
);
720 seq_printf(seq
, " cur_queue_map: %u\n", pkt_dev
->cur_queue_map
);
722 seq_printf(seq
, " flows: %u\n", pkt_dev
->nflows
);
724 if (pkt_dev
->result
[0])
725 seq_printf(seq
, "Result: %s\n", pkt_dev
->result
);
727 seq_printf(seq
, "Result: Idle\n");
733 static int hex32_arg(const char __user
*user_buffer
, unsigned long maxlen
,
739 for (; i
< maxlen
; i
++) {
743 if (get_user(c
, &user_buffer
[i
]))
745 value
= hex_to_bin(c
);
754 static int count_trail_chars(const char __user
* user_buffer
,
759 for (i
= 0; i
< maxlen
; i
++) {
761 if (get_user(c
, &user_buffer
[i
]))
779 static unsigned long num_arg(const char __user
* user_buffer
,
780 unsigned long maxlen
, unsigned long *num
)
785 for (i
= 0; i
< maxlen
; i
++) {
787 if (get_user(c
, &user_buffer
[i
]))
789 if ((c
>= '0') && (c
<= '9')) {
798 static int strn_len(const char __user
* user_buffer
, unsigned int maxlen
)
802 for (i
= 0; i
< maxlen
; i
++) {
804 if (get_user(c
, &user_buffer
[i
]))
822 static ssize_t
get_labels(const char __user
*buffer
, struct pktgen_dev
*pkt_dev
)
829 pkt_dev
->nr_labels
= 0;
832 len
= hex32_arg(&buffer
[i
], 8, &tmp
);
835 pkt_dev
->labels
[n
] = htonl(tmp
);
836 if (pkt_dev
->labels
[n
] & MPLS_STACK_BOTTOM
)
837 pkt_dev
->flags
|= F_MPLS_RND
;
839 if (get_user(c
, &buffer
[i
]))
843 if (n
>= MAX_MPLS_LABELS
)
847 pkt_dev
->nr_labels
= n
;
851 static ssize_t
pktgen_if_write(struct file
*file
,
852 const char __user
* user_buffer
, size_t count
,
855 struct seq_file
*seq
= file
->private_data
;
856 struct pktgen_dev
*pkt_dev
= seq
->private;
858 char name
[16], valstr
[32];
859 unsigned long value
= 0;
860 char *pg_result
= NULL
;
864 pg_result
= &(pkt_dev
->result
[0]);
867 pr_warning("wrong command format\n");
872 tmp
= count_trail_chars(user_buffer
, max
);
874 pr_warning("illegal format\n");
879 /* Read variable name */
881 len
= strn_len(&user_buffer
[i
], sizeof(name
) - 1);
885 memset(name
, 0, sizeof(name
));
886 if (copy_from_user(name
, &user_buffer
[i
], len
))
891 len
= count_trail_chars(&user_buffer
[i
], max
);
898 size_t copy
= min_t(size_t, count
, 1023);
900 if (copy_from_user(tb
, user_buffer
, copy
))
903 printk(KERN_DEBUG
"pktgen: %s,%lu buffer -:%s:-\n", name
,
904 (unsigned long)count
, tb
);
907 if (!strcmp(name
, "min_pkt_size")) {
908 len
= num_arg(&user_buffer
[i
], 10, &value
);
913 if (value
< 14 + 20 + 8)
915 if (value
!= pkt_dev
->min_pkt_size
) {
916 pkt_dev
->min_pkt_size
= value
;
917 pkt_dev
->cur_pkt_size
= value
;
919 sprintf(pg_result
, "OK: min_pkt_size=%u",
920 pkt_dev
->min_pkt_size
);
924 if (!strcmp(name
, "max_pkt_size")) {
925 len
= num_arg(&user_buffer
[i
], 10, &value
);
930 if (value
< 14 + 20 + 8)
932 if (value
!= pkt_dev
->max_pkt_size
) {
933 pkt_dev
->max_pkt_size
= value
;
934 pkt_dev
->cur_pkt_size
= value
;
936 sprintf(pg_result
, "OK: max_pkt_size=%u",
937 pkt_dev
->max_pkt_size
);
941 /* Shortcut for min = max */
943 if (!strcmp(name
, "pkt_size")) {
944 len
= num_arg(&user_buffer
[i
], 10, &value
);
949 if (value
< 14 + 20 + 8)
951 if (value
!= pkt_dev
->min_pkt_size
) {
952 pkt_dev
->min_pkt_size
= value
;
953 pkt_dev
->max_pkt_size
= value
;
954 pkt_dev
->cur_pkt_size
= value
;
956 sprintf(pg_result
, "OK: pkt_size=%u", pkt_dev
->min_pkt_size
);
960 if (!strcmp(name
, "debug")) {
961 len
= num_arg(&user_buffer
[i
], 10, &value
);
967 sprintf(pg_result
, "OK: debug=%u", debug
);
971 if (!strcmp(name
, "frags")) {
972 len
= num_arg(&user_buffer
[i
], 10, &value
);
977 pkt_dev
->nfrags
= value
;
978 sprintf(pg_result
, "OK: frags=%u", pkt_dev
->nfrags
);
981 if (!strcmp(name
, "delay")) {
982 len
= num_arg(&user_buffer
[i
], 10, &value
);
987 if (value
== 0x7FFFFFFF)
988 pkt_dev
->delay
= ULLONG_MAX
;
990 pkt_dev
->delay
= (u64
)value
;
992 sprintf(pg_result
, "OK: delay=%llu",
993 (unsigned long long) pkt_dev
->delay
);
996 if (!strcmp(name
, "rate")) {
997 len
= num_arg(&user_buffer
[i
], 10, &value
);
1004 pkt_dev
->delay
= pkt_dev
->min_pkt_size
*8*NSEC_PER_USEC
/value
;
1006 pr_info("Delay set at: %llu ns\n", pkt_dev
->delay
);
1008 sprintf(pg_result
, "OK: rate=%lu", value
);
1011 if (!strcmp(name
, "ratep")) {
1012 len
= num_arg(&user_buffer
[i
], 10, &value
);
1019 pkt_dev
->delay
= NSEC_PER_SEC
/value
;
1021 pr_info("Delay set at: %llu ns\n", pkt_dev
->delay
);
1023 sprintf(pg_result
, "OK: rate=%lu", value
);
1026 if (!strcmp(name
, "udp_src_min")) {
1027 len
= num_arg(&user_buffer
[i
], 10, &value
);
1032 if (value
!= pkt_dev
->udp_src_min
) {
1033 pkt_dev
->udp_src_min
= value
;
1034 pkt_dev
->cur_udp_src
= value
;
1036 sprintf(pg_result
, "OK: udp_src_min=%u", pkt_dev
->udp_src_min
);
1039 if (!strcmp(name
, "udp_dst_min")) {
1040 len
= num_arg(&user_buffer
[i
], 10, &value
);
1045 if (value
!= pkt_dev
->udp_dst_min
) {
1046 pkt_dev
->udp_dst_min
= value
;
1047 pkt_dev
->cur_udp_dst
= value
;
1049 sprintf(pg_result
, "OK: udp_dst_min=%u", pkt_dev
->udp_dst_min
);
1052 if (!strcmp(name
, "udp_src_max")) {
1053 len
= num_arg(&user_buffer
[i
], 10, &value
);
1058 if (value
!= pkt_dev
->udp_src_max
) {
1059 pkt_dev
->udp_src_max
= value
;
1060 pkt_dev
->cur_udp_src
= value
;
1062 sprintf(pg_result
, "OK: udp_src_max=%u", pkt_dev
->udp_src_max
);
1065 if (!strcmp(name
, "udp_dst_max")) {
1066 len
= num_arg(&user_buffer
[i
], 10, &value
);
1071 if (value
!= pkt_dev
->udp_dst_max
) {
1072 pkt_dev
->udp_dst_max
= value
;
1073 pkt_dev
->cur_udp_dst
= value
;
1075 sprintf(pg_result
, "OK: udp_dst_max=%u", pkt_dev
->udp_dst_max
);
1078 if (!strcmp(name
, "clone_skb")) {
1079 len
= num_arg(&user_buffer
[i
], 10, &value
);
1084 pkt_dev
->clone_skb
= value
;
1086 sprintf(pg_result
, "OK: clone_skb=%d", pkt_dev
->clone_skb
);
1089 if (!strcmp(name
, "count")) {
1090 len
= num_arg(&user_buffer
[i
], 10, &value
);
1095 pkt_dev
->count
= value
;
1096 sprintf(pg_result
, "OK: count=%llu",
1097 (unsigned long long)pkt_dev
->count
);
1100 if (!strcmp(name
, "src_mac_count")) {
1101 len
= num_arg(&user_buffer
[i
], 10, &value
);
1106 if (pkt_dev
->src_mac_count
!= value
) {
1107 pkt_dev
->src_mac_count
= value
;
1108 pkt_dev
->cur_src_mac_offset
= 0;
1110 sprintf(pg_result
, "OK: src_mac_count=%d",
1111 pkt_dev
->src_mac_count
);
1114 if (!strcmp(name
, "dst_mac_count")) {
1115 len
= num_arg(&user_buffer
[i
], 10, &value
);
1120 if (pkt_dev
->dst_mac_count
!= value
) {
1121 pkt_dev
->dst_mac_count
= value
;
1122 pkt_dev
->cur_dst_mac_offset
= 0;
1124 sprintf(pg_result
, "OK: dst_mac_count=%d",
1125 pkt_dev
->dst_mac_count
);
1128 if (!strcmp(name
, "node")) {
1129 len
= num_arg(&user_buffer
[i
], 10, &value
);
1135 if (node_possible(value
)) {
1136 pkt_dev
->node
= value
;
1137 sprintf(pg_result
, "OK: node=%d", pkt_dev
->node
);
1138 if (pkt_dev
->page
) {
1139 put_page(pkt_dev
->page
);
1140 pkt_dev
->page
= NULL
;
1144 sprintf(pg_result
, "ERROR: node not possible");
1147 if (!strcmp(name
, "flag")) {
1150 len
= strn_len(&user_buffer
[i
], sizeof(f
) - 1);
1154 if (copy_from_user(f
, &user_buffer
[i
], len
))
1157 if (strcmp(f
, "IPSRC_RND") == 0)
1158 pkt_dev
->flags
|= F_IPSRC_RND
;
1160 else if (strcmp(f
, "!IPSRC_RND") == 0)
1161 pkt_dev
->flags
&= ~F_IPSRC_RND
;
1163 else if (strcmp(f
, "TXSIZE_RND") == 0)
1164 pkt_dev
->flags
|= F_TXSIZE_RND
;
1166 else if (strcmp(f
, "!TXSIZE_RND") == 0)
1167 pkt_dev
->flags
&= ~F_TXSIZE_RND
;
1169 else if (strcmp(f
, "IPDST_RND") == 0)
1170 pkt_dev
->flags
|= F_IPDST_RND
;
1172 else if (strcmp(f
, "!IPDST_RND") == 0)
1173 pkt_dev
->flags
&= ~F_IPDST_RND
;
1175 else if (strcmp(f
, "UDPSRC_RND") == 0)
1176 pkt_dev
->flags
|= F_UDPSRC_RND
;
1178 else if (strcmp(f
, "!UDPSRC_RND") == 0)
1179 pkt_dev
->flags
&= ~F_UDPSRC_RND
;
1181 else if (strcmp(f
, "UDPDST_RND") == 0)
1182 pkt_dev
->flags
|= F_UDPDST_RND
;
1184 else if (strcmp(f
, "!UDPDST_RND") == 0)
1185 pkt_dev
->flags
&= ~F_UDPDST_RND
;
1187 else if (strcmp(f
, "MACSRC_RND") == 0)
1188 pkt_dev
->flags
|= F_MACSRC_RND
;
1190 else if (strcmp(f
, "!MACSRC_RND") == 0)
1191 pkt_dev
->flags
&= ~F_MACSRC_RND
;
1193 else if (strcmp(f
, "MACDST_RND") == 0)
1194 pkt_dev
->flags
|= F_MACDST_RND
;
1196 else if (strcmp(f
, "!MACDST_RND") == 0)
1197 pkt_dev
->flags
&= ~F_MACDST_RND
;
1199 else if (strcmp(f
, "MPLS_RND") == 0)
1200 pkt_dev
->flags
|= F_MPLS_RND
;
1202 else if (strcmp(f
, "!MPLS_RND") == 0)
1203 pkt_dev
->flags
&= ~F_MPLS_RND
;
1205 else if (strcmp(f
, "VID_RND") == 0)
1206 pkt_dev
->flags
|= F_VID_RND
;
1208 else if (strcmp(f
, "!VID_RND") == 0)
1209 pkt_dev
->flags
&= ~F_VID_RND
;
1211 else if (strcmp(f
, "SVID_RND") == 0)
1212 pkt_dev
->flags
|= F_SVID_RND
;
1214 else if (strcmp(f
, "!SVID_RND") == 0)
1215 pkt_dev
->flags
&= ~F_SVID_RND
;
1217 else if (strcmp(f
, "FLOW_SEQ") == 0)
1218 pkt_dev
->flags
|= F_FLOW_SEQ
;
1220 else if (strcmp(f
, "QUEUE_MAP_RND") == 0)
1221 pkt_dev
->flags
|= F_QUEUE_MAP_RND
;
1223 else if (strcmp(f
, "!QUEUE_MAP_RND") == 0)
1224 pkt_dev
->flags
&= ~F_QUEUE_MAP_RND
;
1226 else if (strcmp(f
, "QUEUE_MAP_CPU") == 0)
1227 pkt_dev
->flags
|= F_QUEUE_MAP_CPU
;
1229 else if (strcmp(f
, "!QUEUE_MAP_CPU") == 0)
1230 pkt_dev
->flags
&= ~F_QUEUE_MAP_CPU
;
1232 else if (strcmp(f
, "IPSEC") == 0)
1233 pkt_dev
->flags
|= F_IPSEC_ON
;
1236 else if (strcmp(f
, "!IPV6") == 0)
1237 pkt_dev
->flags
&= ~F_IPV6
;
1239 else if (strcmp(f
, "NODE_ALLOC") == 0)
1240 pkt_dev
->flags
|= F_NODE
;
1242 else if (strcmp(f
, "!NODE_ALLOC") == 0)
1243 pkt_dev
->flags
&= ~F_NODE
;
1247 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1249 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
1250 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
1253 sprintf(pg_result
, "OK: flags=0x%x", pkt_dev
->flags
);
1256 if (!strcmp(name
, "dst_min") || !strcmp(name
, "dst")) {
1257 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->dst_min
) - 1);
1261 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1264 if (strcmp(buf
, pkt_dev
->dst_min
) != 0) {
1265 memset(pkt_dev
->dst_min
, 0, sizeof(pkt_dev
->dst_min
));
1266 strncpy(pkt_dev
->dst_min
, buf
, len
);
1267 pkt_dev
->daddr_min
= in_aton(pkt_dev
->dst_min
);
1268 pkt_dev
->cur_daddr
= pkt_dev
->daddr_min
;
1271 printk(KERN_DEBUG
"pktgen: dst_min set to: %s\n",
1274 sprintf(pg_result
, "OK: dst_min=%s", pkt_dev
->dst_min
);
1277 if (!strcmp(name
, "dst_max")) {
1278 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->dst_max
) - 1);
1283 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1287 if (strcmp(buf
, pkt_dev
->dst_max
) != 0) {
1288 memset(pkt_dev
->dst_max
, 0, sizeof(pkt_dev
->dst_max
));
1289 strncpy(pkt_dev
->dst_max
, buf
, len
);
1290 pkt_dev
->daddr_max
= in_aton(pkt_dev
->dst_max
);
1291 pkt_dev
->cur_daddr
= pkt_dev
->daddr_max
;
1294 printk(KERN_DEBUG
"pktgen: dst_max set to: %s\n",
1297 sprintf(pg_result
, "OK: dst_max=%s", pkt_dev
->dst_max
);
1300 if (!strcmp(name
, "dst6")) {
1301 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1305 pkt_dev
->flags
|= F_IPV6
;
1307 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1311 scan_ip6(buf
, pkt_dev
->in6_daddr
.s6_addr
);
1312 fmt_ip6(buf
, pkt_dev
->in6_daddr
.s6_addr
);
1314 ipv6_addr_copy(&pkt_dev
->cur_in6_daddr
, &pkt_dev
->in6_daddr
);
1317 printk(KERN_DEBUG
"pktgen: dst6 set to: %s\n", buf
);
1320 sprintf(pg_result
, "OK: dst6=%s", buf
);
1323 if (!strcmp(name
, "dst6_min")) {
1324 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1328 pkt_dev
->flags
|= F_IPV6
;
1330 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1334 scan_ip6(buf
, pkt_dev
->min_in6_daddr
.s6_addr
);
1335 fmt_ip6(buf
, pkt_dev
->min_in6_daddr
.s6_addr
);
1337 ipv6_addr_copy(&pkt_dev
->cur_in6_daddr
,
1338 &pkt_dev
->min_in6_daddr
);
1340 printk(KERN_DEBUG
"pktgen: dst6_min set to: %s\n", buf
);
1343 sprintf(pg_result
, "OK: dst6_min=%s", buf
);
1346 if (!strcmp(name
, "dst6_max")) {
1347 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1351 pkt_dev
->flags
|= F_IPV6
;
1353 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1357 scan_ip6(buf
, pkt_dev
->max_in6_daddr
.s6_addr
);
1358 fmt_ip6(buf
, pkt_dev
->max_in6_daddr
.s6_addr
);
1361 printk(KERN_DEBUG
"pktgen: dst6_max set to: %s\n", buf
);
1364 sprintf(pg_result
, "OK: dst6_max=%s", buf
);
1367 if (!strcmp(name
, "src6")) {
1368 len
= strn_len(&user_buffer
[i
], sizeof(buf
) - 1);
1372 pkt_dev
->flags
|= F_IPV6
;
1374 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1378 scan_ip6(buf
, pkt_dev
->in6_saddr
.s6_addr
);
1379 fmt_ip6(buf
, pkt_dev
->in6_saddr
.s6_addr
);
1381 ipv6_addr_copy(&pkt_dev
->cur_in6_saddr
, &pkt_dev
->in6_saddr
);
1384 printk(KERN_DEBUG
"pktgen: src6 set to: %s\n", buf
);
1387 sprintf(pg_result
, "OK: src6=%s", buf
);
1390 if (!strcmp(name
, "src_min")) {
1391 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->src_min
) - 1);
1395 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1398 if (strcmp(buf
, pkt_dev
->src_min
) != 0) {
1399 memset(pkt_dev
->src_min
, 0, sizeof(pkt_dev
->src_min
));
1400 strncpy(pkt_dev
->src_min
, buf
, len
);
1401 pkt_dev
->saddr_min
= in_aton(pkt_dev
->src_min
);
1402 pkt_dev
->cur_saddr
= pkt_dev
->saddr_min
;
1405 printk(KERN_DEBUG
"pktgen: src_min set to: %s\n",
1408 sprintf(pg_result
, "OK: src_min=%s", pkt_dev
->src_min
);
1411 if (!strcmp(name
, "src_max")) {
1412 len
= strn_len(&user_buffer
[i
], sizeof(pkt_dev
->src_max
) - 1);
1416 if (copy_from_user(buf
, &user_buffer
[i
], len
))
1419 if (strcmp(buf
, pkt_dev
->src_max
) != 0) {
1420 memset(pkt_dev
->src_max
, 0, sizeof(pkt_dev
->src_max
));
1421 strncpy(pkt_dev
->src_max
, buf
, len
);
1422 pkt_dev
->saddr_max
= in_aton(pkt_dev
->src_max
);
1423 pkt_dev
->cur_saddr
= pkt_dev
->saddr_max
;
1426 printk(KERN_DEBUG
"pktgen: src_max set to: %s\n",
1429 sprintf(pg_result
, "OK: src_max=%s", pkt_dev
->src_max
);
1432 if (!strcmp(name
, "dst_mac")) {
1434 unsigned char old_dmac
[ETH_ALEN
];
1435 unsigned char *m
= pkt_dev
->dst_mac
;
1436 memcpy(old_dmac
, pkt_dev
->dst_mac
, ETH_ALEN
);
1438 len
= strn_len(&user_buffer
[i
], sizeof(valstr
) - 1);
1442 memset(valstr
, 0, sizeof(valstr
));
1443 if (copy_from_user(valstr
, &user_buffer
[i
], len
))
1447 for (*m
= 0; *v
&& m
< pkt_dev
->dst_mac
+ 6; v
++) {
1450 value
= hex_to_bin(*v
);
1452 *m
= *m
* 16 + value
;
1460 /* Set up Dest MAC */
1461 if (compare_ether_addr(old_dmac
, pkt_dev
->dst_mac
))
1462 memcpy(&(pkt_dev
->hh
[0]), pkt_dev
->dst_mac
, ETH_ALEN
);
1464 sprintf(pg_result
, "OK: dstmac");
1467 if (!strcmp(name
, "src_mac")) {
1469 unsigned char old_smac
[ETH_ALEN
];
1470 unsigned char *m
= pkt_dev
->src_mac
;
1472 memcpy(old_smac
, pkt_dev
->src_mac
, ETH_ALEN
);
1474 len
= strn_len(&user_buffer
[i
], sizeof(valstr
) - 1);
1478 memset(valstr
, 0, sizeof(valstr
));
1479 if (copy_from_user(valstr
, &user_buffer
[i
], len
))
1483 for (*m
= 0; *v
&& m
< pkt_dev
->src_mac
+ 6; v
++) {
1486 value
= hex_to_bin(*v
);
1488 *m
= *m
* 16 + value
;
1496 /* Set up Src MAC */
1497 if (compare_ether_addr(old_smac
, pkt_dev
->src_mac
))
1498 memcpy(&(pkt_dev
->hh
[6]), pkt_dev
->src_mac
, ETH_ALEN
);
1500 sprintf(pg_result
, "OK: srcmac");
1504 if (!strcmp(name
, "clear_counters")) {
1505 pktgen_clear_counters(pkt_dev
);
1506 sprintf(pg_result
, "OK: Clearing counters.\n");
1510 if (!strcmp(name
, "flows")) {
1511 len
= num_arg(&user_buffer
[i
], 10, &value
);
1516 if (value
> MAX_CFLOWS
)
1519 pkt_dev
->cflows
= value
;
1520 sprintf(pg_result
, "OK: flows=%u", pkt_dev
->cflows
);
1524 if (!strcmp(name
, "flowlen")) {
1525 len
= num_arg(&user_buffer
[i
], 10, &value
);
1530 pkt_dev
->lflow
= value
;
1531 sprintf(pg_result
, "OK: flowlen=%u", pkt_dev
->lflow
);
1535 if (!strcmp(name
, "queue_map_min")) {
1536 len
= num_arg(&user_buffer
[i
], 5, &value
);
1541 pkt_dev
->queue_map_min
= value
;
1542 sprintf(pg_result
, "OK: queue_map_min=%u", pkt_dev
->queue_map_min
);
1546 if (!strcmp(name
, "queue_map_max")) {
1547 len
= num_arg(&user_buffer
[i
], 5, &value
);
1552 pkt_dev
->queue_map_max
= value
;
1553 sprintf(pg_result
, "OK: queue_map_max=%u", pkt_dev
->queue_map_max
);
1557 if (!strcmp(name
, "mpls")) {
1560 len
= get_labels(&user_buffer
[i
], pkt_dev
);
1564 cnt
= sprintf(pg_result
, "OK: mpls=");
1565 for (n
= 0; n
< pkt_dev
->nr_labels
; n
++)
1566 cnt
+= sprintf(pg_result
+ cnt
,
1567 "%08x%s", ntohl(pkt_dev
->labels
[n
]),
1568 n
== pkt_dev
->nr_labels
-1 ? "" : ",");
1570 if (pkt_dev
->nr_labels
&& pkt_dev
->vlan_id
!= 0xffff) {
1571 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1572 pkt_dev
->svlan_id
= 0xffff;
1575 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN auto turned off\n");
1580 if (!strcmp(name
, "vlan_id")) {
1581 len
= num_arg(&user_buffer
[i
], 4, &value
);
1586 if (value
<= 4095) {
1587 pkt_dev
->vlan_id
= value
; /* turn on VLAN */
1590 printk(KERN_DEBUG
"pktgen: VLAN turned on\n");
1592 if (debug
&& pkt_dev
->nr_labels
)
1593 printk(KERN_DEBUG
"pktgen: MPLS auto turned off\n");
1595 pkt_dev
->nr_labels
= 0; /* turn off MPLS */
1596 sprintf(pg_result
, "OK: vlan_id=%u", pkt_dev
->vlan_id
);
1598 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1599 pkt_dev
->svlan_id
= 0xffff;
1602 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN turned off\n");
1607 if (!strcmp(name
, "vlan_p")) {
1608 len
= num_arg(&user_buffer
[i
], 1, &value
);
1613 if ((value
<= 7) && (pkt_dev
->vlan_id
!= 0xffff)) {
1614 pkt_dev
->vlan_p
= value
;
1615 sprintf(pg_result
, "OK: vlan_p=%u", pkt_dev
->vlan_p
);
1617 sprintf(pg_result
, "ERROR: vlan_p must be 0-7");
1622 if (!strcmp(name
, "vlan_cfi")) {
1623 len
= num_arg(&user_buffer
[i
], 1, &value
);
1628 if ((value
<= 1) && (pkt_dev
->vlan_id
!= 0xffff)) {
1629 pkt_dev
->vlan_cfi
= value
;
1630 sprintf(pg_result
, "OK: vlan_cfi=%u", pkt_dev
->vlan_cfi
);
1632 sprintf(pg_result
, "ERROR: vlan_cfi must be 0-1");
1637 if (!strcmp(name
, "svlan_id")) {
1638 len
= num_arg(&user_buffer
[i
], 4, &value
);
1643 if ((value
<= 4095) && ((pkt_dev
->vlan_id
!= 0xffff))) {
1644 pkt_dev
->svlan_id
= value
; /* turn on SVLAN */
1647 printk(KERN_DEBUG
"pktgen: SVLAN turned on\n");
1649 if (debug
&& pkt_dev
->nr_labels
)
1650 printk(KERN_DEBUG
"pktgen: MPLS auto turned off\n");
1652 pkt_dev
->nr_labels
= 0; /* turn off MPLS */
1653 sprintf(pg_result
, "OK: svlan_id=%u", pkt_dev
->svlan_id
);
1655 pkt_dev
->vlan_id
= 0xffff; /* turn off VLAN/SVLAN */
1656 pkt_dev
->svlan_id
= 0xffff;
1659 printk(KERN_DEBUG
"pktgen: VLAN/SVLAN turned off\n");
1664 if (!strcmp(name
, "svlan_p")) {
1665 len
= num_arg(&user_buffer
[i
], 1, &value
);
1670 if ((value
<= 7) && (pkt_dev
->svlan_id
!= 0xffff)) {
1671 pkt_dev
->svlan_p
= value
;
1672 sprintf(pg_result
, "OK: svlan_p=%u", pkt_dev
->svlan_p
);
1674 sprintf(pg_result
, "ERROR: svlan_p must be 0-7");
1679 if (!strcmp(name
, "svlan_cfi")) {
1680 len
= num_arg(&user_buffer
[i
], 1, &value
);
1685 if ((value
<= 1) && (pkt_dev
->svlan_id
!= 0xffff)) {
1686 pkt_dev
->svlan_cfi
= value
;
1687 sprintf(pg_result
, "OK: svlan_cfi=%u", pkt_dev
->svlan_cfi
);
1689 sprintf(pg_result
, "ERROR: svlan_cfi must be 0-1");
1694 if (!strcmp(name
, "tos")) {
1695 __u32 tmp_value
= 0;
1696 len
= hex32_arg(&user_buffer
[i
], 2, &tmp_value
);
1702 pkt_dev
->tos
= tmp_value
;
1703 sprintf(pg_result
, "OK: tos=0x%02x", pkt_dev
->tos
);
1705 sprintf(pg_result
, "ERROR: tos must be 00-ff");
1710 if (!strcmp(name
, "traffic_class")) {
1711 __u32 tmp_value
= 0;
1712 len
= hex32_arg(&user_buffer
[i
], 2, &tmp_value
);
1718 pkt_dev
->traffic_class
= tmp_value
;
1719 sprintf(pg_result
, "OK: traffic_class=0x%02x", pkt_dev
->traffic_class
);
1721 sprintf(pg_result
, "ERROR: traffic_class must be 00-ff");
1726 if (!strcmp(name
, "skb_priority")) {
1727 len
= num_arg(&user_buffer
[i
], 9, &value
);
1732 pkt_dev
->skb_priority
= value
;
1733 sprintf(pg_result
, "OK: skb_priority=%i",
1734 pkt_dev
->skb_priority
);
1738 sprintf(pkt_dev
->result
, "No such parameter \"%s\"", name
);
1742 static int pktgen_if_open(struct inode
*inode
, struct file
*file
)
1744 return single_open(file
, pktgen_if_show
, PDE(inode
)->data
);
1747 static const struct file_operations pktgen_if_fops
= {
1748 .owner
= THIS_MODULE
,
1749 .open
= pktgen_if_open
,
1751 .llseek
= seq_lseek
,
1752 .write
= pktgen_if_write
,
1753 .release
= single_release
,
1756 static int pktgen_thread_show(struct seq_file
*seq
, void *v
)
1758 struct pktgen_thread
*t
= seq
->private;
1759 const struct pktgen_dev
*pkt_dev
;
1763 seq_printf(seq
, "Running: ");
1766 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
1767 if (pkt_dev
->running
)
1768 seq_printf(seq
, "%s ", pkt_dev
->odevname
);
1770 seq_printf(seq
, "\nStopped: ");
1772 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
1773 if (!pkt_dev
->running
)
1774 seq_printf(seq
, "%s ", pkt_dev
->odevname
);
1777 seq_printf(seq
, "\nResult: %s\n", t
->result
);
1779 seq_printf(seq
, "\nResult: NA\n");
1786 static ssize_t
pktgen_thread_write(struct file
*file
,
1787 const char __user
* user_buffer
,
1788 size_t count
, loff_t
* offset
)
1790 struct seq_file
*seq
= file
->private_data
;
1791 struct pktgen_thread
*t
= seq
->private;
1792 int i
, max
, len
, ret
;
1797 // sprintf(pg_result, "Wrong command format");
1802 len
= count_trail_chars(user_buffer
, max
);
1808 /* Read variable name */
1810 len
= strn_len(&user_buffer
[i
], sizeof(name
) - 1);
1814 memset(name
, 0, sizeof(name
));
1815 if (copy_from_user(name
, &user_buffer
[i
], len
))
1820 len
= count_trail_chars(&user_buffer
[i
], max
);
1827 printk(KERN_DEBUG
"pktgen: t=%s, count=%lu\n",
1828 name
, (unsigned long)count
);
1831 pr_err("ERROR: No thread\n");
1836 pg_result
= &(t
->result
[0]);
1838 if (!strcmp(name
, "add_device")) {
1841 len
= strn_len(&user_buffer
[i
], sizeof(f
) - 1);
1846 if (copy_from_user(f
, &user_buffer
[i
], len
))
1849 mutex_lock(&pktgen_thread_lock
);
1850 pktgen_add_device(t
, f
);
1851 mutex_unlock(&pktgen_thread_lock
);
1853 sprintf(pg_result
, "OK: add_device=%s", f
);
1857 if (!strcmp(name
, "rem_device_all")) {
1858 mutex_lock(&pktgen_thread_lock
);
1859 t
->control
|= T_REMDEVALL
;
1860 mutex_unlock(&pktgen_thread_lock
);
1861 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1863 sprintf(pg_result
, "OK: rem_device_all");
1867 if (!strcmp(name
, "max_before_softirq")) {
1868 sprintf(pg_result
, "OK: Note! max_before_softirq is obsoleted -- Do not use");
1878 static int pktgen_thread_open(struct inode
*inode
, struct file
*file
)
1880 return single_open(file
, pktgen_thread_show
, PDE(inode
)->data
);
1883 static const struct file_operations pktgen_thread_fops
= {
1884 .owner
= THIS_MODULE
,
1885 .open
= pktgen_thread_open
,
1887 .llseek
= seq_lseek
,
1888 .write
= pktgen_thread_write
,
1889 .release
= single_release
,
1892 /* Think find or remove for NN */
1893 static struct pktgen_dev
*__pktgen_NN_threads(const char *ifname
, int remove
)
1895 struct pktgen_thread
*t
;
1896 struct pktgen_dev
*pkt_dev
= NULL
;
1897 bool exact
= (remove
== FIND
);
1899 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
1900 pkt_dev
= pktgen_find_dev(t
, ifname
, exact
);
1904 pkt_dev
->removal_mark
= 1;
1905 t
->control
|= T_REMDEV
;
1915 * mark a device for removal
1917 static void pktgen_mark_device(const char *ifname
)
1919 struct pktgen_dev
*pkt_dev
= NULL
;
1920 const int max_tries
= 10, msec_per_try
= 125;
1923 mutex_lock(&pktgen_thread_lock
);
1924 pr_debug("%s: marking %s for removal\n", __func__
, ifname
);
1928 pkt_dev
= __pktgen_NN_threads(ifname
, REMOVE
);
1929 if (pkt_dev
== NULL
)
1930 break; /* success */
1932 mutex_unlock(&pktgen_thread_lock
);
1933 pr_debug("%s: waiting for %s to disappear....\n",
1935 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try
));
1936 mutex_lock(&pktgen_thread_lock
);
1938 if (++i
>= max_tries
) {
1939 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1940 __func__
, msec_per_try
* i
, ifname
);
1946 mutex_unlock(&pktgen_thread_lock
);
1949 static void pktgen_change_name(struct net_device
*dev
)
1951 struct pktgen_thread
*t
;
1953 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
1954 struct pktgen_dev
*pkt_dev
;
1956 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
1957 if (pkt_dev
->odev
!= dev
)
1960 remove_proc_entry(pkt_dev
->entry
->name
, pg_proc_dir
);
1962 pkt_dev
->entry
= proc_create_data(dev
->name
, 0600,
1966 if (!pkt_dev
->entry
)
1967 pr_err("can't move proc entry for '%s'\n",
1974 static int pktgen_device_event(struct notifier_block
*unused
,
1975 unsigned long event
, void *ptr
)
1977 struct net_device
*dev
= ptr
;
1979 if (!net_eq(dev_net(dev
), &init_net
))
1982 /* It is OK that we do not hold the group lock right now,
1983 * as we run under the RTNL lock.
1987 case NETDEV_CHANGENAME
:
1988 pktgen_change_name(dev
);
1991 case NETDEV_UNREGISTER
:
1992 pktgen_mark_device(dev
->name
);
1999 static struct net_device
*pktgen_dev_get_by_name(struct pktgen_dev
*pkt_dev
,
2005 for (i
= 0; ifname
[i
] != '@'; i
++) {
2013 return dev_get_by_name(&init_net
, b
);
2017 /* Associate pktgen_dev with a device. */
2019 static int pktgen_setup_dev(struct pktgen_dev
*pkt_dev
, const char *ifname
)
2021 struct net_device
*odev
;
2024 /* Clean old setups */
2025 if (pkt_dev
->odev
) {
2026 dev_put(pkt_dev
->odev
);
2027 pkt_dev
->odev
= NULL
;
2030 odev
= pktgen_dev_get_by_name(pkt_dev
, ifname
);
2032 pr_err("no such netdevice: \"%s\"\n", ifname
);
2036 if (odev
->type
!= ARPHRD_ETHER
) {
2037 pr_err("not an ethernet device: \"%s\"\n", ifname
);
2039 } else if (!netif_running(odev
)) {
2040 pr_err("device is down: \"%s\"\n", ifname
);
2043 pkt_dev
->odev
= odev
;
2051 /* Read pkt_dev from the interface and set up internal pktgen_dev
2052 * structure to have the right information to create/send packets
2054 static void pktgen_setup_inject(struct pktgen_dev
*pkt_dev
)
2058 if (!pkt_dev
->odev
) {
2059 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
2060 sprintf(pkt_dev
->result
,
2061 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2065 /* make sure that we don't pick a non-existing transmit queue */
2066 ntxq
= pkt_dev
->odev
->real_num_tx_queues
;
2068 if (ntxq
<= pkt_dev
->queue_map_min
) {
2069 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2070 pkt_dev
->queue_map_min
, (ntxq
?: 1) - 1, ntxq
,
2072 pkt_dev
->queue_map_min
= ntxq
- 1;
2074 if (pkt_dev
->queue_map_max
>= ntxq
) {
2075 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2076 pkt_dev
->queue_map_max
, (ntxq
?: 1) - 1, ntxq
,
2078 pkt_dev
->queue_map_max
= ntxq
- 1;
2081 /* Default to the interface's mac if not explicitly set. */
2083 if (is_zero_ether_addr(pkt_dev
->src_mac
))
2084 memcpy(&(pkt_dev
->hh
[6]), pkt_dev
->odev
->dev_addr
, ETH_ALEN
);
2086 /* Set up Dest MAC */
2087 memcpy(&(pkt_dev
->hh
[0]), pkt_dev
->dst_mac
, ETH_ALEN
);
2089 /* Set up pkt size */
2090 pkt_dev
->cur_pkt_size
= pkt_dev
->min_pkt_size
;
2092 if (pkt_dev
->flags
& F_IPV6
) {
2094 * Skip this automatic address setting until locks or functions
2099 int i
, set
= 0, err
= 1;
2100 struct inet6_dev
*idev
;
2102 for (i
= 0; i
< IN6_ADDR_HSIZE
; i
++)
2103 if (pkt_dev
->cur_in6_saddr
.s6_addr
[i
]) {
2111 * Use linklevel address if unconfigured.
2113 * use ipv6_get_lladdr if/when it's get exported
2117 idev
= __in6_dev_get(pkt_dev
->odev
);
2119 struct inet6_ifaddr
*ifp
;
2121 read_lock_bh(&idev
->lock
);
2122 for (ifp
= idev
->addr_list
; ifp
;
2123 ifp
= ifp
->if_next
) {
2124 if (ifp
->scope
== IFA_LINK
&&
2125 !(ifp
->flags
& IFA_F_TENTATIVE
)) {
2126 ipv6_addr_copy(&pkt_dev
->
2133 read_unlock_bh(&idev
->lock
);
2137 pr_err("ERROR: IPv6 link address not available\n");
2141 pkt_dev
->saddr_min
= 0;
2142 pkt_dev
->saddr_max
= 0;
2143 if (strlen(pkt_dev
->src_min
) == 0) {
2145 struct in_device
*in_dev
;
2148 in_dev
= __in_dev_get_rcu(pkt_dev
->odev
);
2150 if (in_dev
->ifa_list
) {
2151 pkt_dev
->saddr_min
=
2152 in_dev
->ifa_list
->ifa_address
;
2153 pkt_dev
->saddr_max
= pkt_dev
->saddr_min
;
2158 pkt_dev
->saddr_min
= in_aton(pkt_dev
->src_min
);
2159 pkt_dev
->saddr_max
= in_aton(pkt_dev
->src_max
);
2162 pkt_dev
->daddr_min
= in_aton(pkt_dev
->dst_min
);
2163 pkt_dev
->daddr_max
= in_aton(pkt_dev
->dst_max
);
2165 /* Initialize current values. */
2166 pkt_dev
->cur_dst_mac_offset
= 0;
2167 pkt_dev
->cur_src_mac_offset
= 0;
2168 pkt_dev
->cur_saddr
= pkt_dev
->saddr_min
;
2169 pkt_dev
->cur_daddr
= pkt_dev
->daddr_min
;
2170 pkt_dev
->cur_udp_dst
= pkt_dev
->udp_dst_min
;
2171 pkt_dev
->cur_udp_src
= pkt_dev
->udp_src_min
;
2172 pkt_dev
->nflows
= 0;
2176 static void spin(struct pktgen_dev
*pkt_dev
, ktime_t spin_until
)
2178 ktime_t start_time
, end_time
;
2180 struct hrtimer_sleeper t
;
2182 hrtimer_init_on_stack(&t
.timer
, CLOCK_MONOTONIC
, HRTIMER_MODE_ABS
);
2183 hrtimer_set_expires(&t
.timer
, spin_until
);
2185 remaining
= ktime_to_ns(hrtimer_expires_remaining(&t
.timer
));
2186 if (remaining
<= 0) {
2187 pkt_dev
->next_tx
= ktime_add_ns(spin_until
, pkt_dev
->delay
);
2191 start_time
= ktime_now();
2192 if (remaining
< 100000)
2193 ndelay(remaining
); /* really small just spin */
2195 /* see do_nanosleep */
2196 hrtimer_init_sleeper(&t
, current
);
2198 set_current_state(TASK_INTERRUPTIBLE
);
2199 hrtimer_start_expires(&t
.timer
, HRTIMER_MODE_ABS
);
2200 if (!hrtimer_active(&t
.timer
))
2206 hrtimer_cancel(&t
.timer
);
2207 } while (t
.task
&& pkt_dev
->running
&& !signal_pending(current
));
2208 __set_current_state(TASK_RUNNING
);
2210 end_time
= ktime_now();
2212 pkt_dev
->idle_acc
+= ktime_to_ns(ktime_sub(end_time
, start_time
));
2213 pkt_dev
->next_tx
= ktime_add_ns(spin_until
, pkt_dev
->delay
);
2216 static inline void set_pkt_overhead(struct pktgen_dev
*pkt_dev
)
2218 pkt_dev
->pkt_overhead
= 0;
2219 pkt_dev
->pkt_overhead
+= pkt_dev
->nr_labels
*sizeof(u32
);
2220 pkt_dev
->pkt_overhead
+= VLAN_TAG_SIZE(pkt_dev
);
2221 pkt_dev
->pkt_overhead
+= SVLAN_TAG_SIZE(pkt_dev
);
2224 static inline int f_seen(const struct pktgen_dev
*pkt_dev
, int flow
)
2226 return !!(pkt_dev
->flows
[flow
].flags
& F_INIT
);
2229 static inline int f_pick(struct pktgen_dev
*pkt_dev
)
2231 int flow
= pkt_dev
->curfl
;
2233 if (pkt_dev
->flags
& F_FLOW_SEQ
) {
2234 if (pkt_dev
->flows
[flow
].count
>= pkt_dev
->lflow
) {
2236 pkt_dev
->flows
[flow
].count
= 0;
2237 pkt_dev
->flows
[flow
].flags
= 0;
2238 pkt_dev
->curfl
+= 1;
2239 if (pkt_dev
->curfl
>= pkt_dev
->cflows
)
2240 pkt_dev
->curfl
= 0; /*reset */
2243 flow
= random32() % pkt_dev
->cflows
;
2244 pkt_dev
->curfl
= flow
;
2246 if (pkt_dev
->flows
[flow
].count
> pkt_dev
->lflow
) {
2247 pkt_dev
->flows
[flow
].count
= 0;
2248 pkt_dev
->flows
[flow
].flags
= 0;
2252 return pkt_dev
->curfl
;
2257 /* If there was already an IPSEC SA, we keep it as is, else
2258 * we go look for it ...
2260 #define DUMMY_MARK 0
2261 static void get_ipsec_sa(struct pktgen_dev
*pkt_dev
, int flow
)
2263 struct xfrm_state
*x
= pkt_dev
->flows
[flow
].x
;
2265 /*slow path: we dont already have xfrm_state*/
2266 x
= xfrm_stateonly_find(&init_net
, DUMMY_MARK
,
2267 (xfrm_address_t
*)&pkt_dev
->cur_daddr
,
2268 (xfrm_address_t
*)&pkt_dev
->cur_saddr
,
2271 pkt_dev
->ipsproto
, 0);
2273 pkt_dev
->flows
[flow
].x
= x
;
2274 set_pkt_overhead(pkt_dev
);
2275 pkt_dev
->pkt_overhead
+= x
->props
.header_len
;
2281 static void set_cur_queue_map(struct pktgen_dev
*pkt_dev
)
2284 if (pkt_dev
->flags
& F_QUEUE_MAP_CPU
)
2285 pkt_dev
->cur_queue_map
= smp_processor_id();
2287 else if (pkt_dev
->queue_map_min
<= pkt_dev
->queue_map_max
) {
2289 if (pkt_dev
->flags
& F_QUEUE_MAP_RND
) {
2291 (pkt_dev
->queue_map_max
-
2292 pkt_dev
->queue_map_min
+ 1)
2293 + pkt_dev
->queue_map_min
;
2295 t
= pkt_dev
->cur_queue_map
+ 1;
2296 if (t
> pkt_dev
->queue_map_max
)
2297 t
= pkt_dev
->queue_map_min
;
2299 pkt_dev
->cur_queue_map
= t
;
2301 pkt_dev
->cur_queue_map
= pkt_dev
->cur_queue_map
% pkt_dev
->odev
->real_num_tx_queues
;
2304 /* Increment/randomize headers according to flags and current values
2305 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2307 static void mod_cur_headers(struct pktgen_dev
*pkt_dev
)
2313 if (pkt_dev
->cflows
)
2314 flow
= f_pick(pkt_dev
);
2316 /* Deal with source MAC */
2317 if (pkt_dev
->src_mac_count
> 1) {
2321 if (pkt_dev
->flags
& F_MACSRC_RND
)
2322 mc
= random32() % pkt_dev
->src_mac_count
;
2324 mc
= pkt_dev
->cur_src_mac_offset
++;
2325 if (pkt_dev
->cur_src_mac_offset
>=
2326 pkt_dev
->src_mac_count
)
2327 pkt_dev
->cur_src_mac_offset
= 0;
2330 tmp
= pkt_dev
->src_mac
[5] + (mc
& 0xFF);
2331 pkt_dev
->hh
[11] = tmp
;
2332 tmp
= (pkt_dev
->src_mac
[4] + ((mc
>> 8) & 0xFF) + (tmp
>> 8));
2333 pkt_dev
->hh
[10] = tmp
;
2334 tmp
= (pkt_dev
->src_mac
[3] + ((mc
>> 16) & 0xFF) + (tmp
>> 8));
2335 pkt_dev
->hh
[9] = tmp
;
2336 tmp
= (pkt_dev
->src_mac
[2] + ((mc
>> 24) & 0xFF) + (tmp
>> 8));
2337 pkt_dev
->hh
[8] = tmp
;
2338 tmp
= (pkt_dev
->src_mac
[1] + (tmp
>> 8));
2339 pkt_dev
->hh
[7] = tmp
;
2342 /* Deal with Destination MAC */
2343 if (pkt_dev
->dst_mac_count
> 1) {
2347 if (pkt_dev
->flags
& F_MACDST_RND
)
2348 mc
= random32() % pkt_dev
->dst_mac_count
;
2351 mc
= pkt_dev
->cur_dst_mac_offset
++;
2352 if (pkt_dev
->cur_dst_mac_offset
>=
2353 pkt_dev
->dst_mac_count
) {
2354 pkt_dev
->cur_dst_mac_offset
= 0;
2358 tmp
= pkt_dev
->dst_mac
[5] + (mc
& 0xFF);
2359 pkt_dev
->hh
[5] = tmp
;
2360 tmp
= (pkt_dev
->dst_mac
[4] + ((mc
>> 8) & 0xFF) + (tmp
>> 8));
2361 pkt_dev
->hh
[4] = tmp
;
2362 tmp
= (pkt_dev
->dst_mac
[3] + ((mc
>> 16) & 0xFF) + (tmp
>> 8));
2363 pkt_dev
->hh
[3] = tmp
;
2364 tmp
= (pkt_dev
->dst_mac
[2] + ((mc
>> 24) & 0xFF) + (tmp
>> 8));
2365 pkt_dev
->hh
[2] = tmp
;
2366 tmp
= (pkt_dev
->dst_mac
[1] + (tmp
>> 8));
2367 pkt_dev
->hh
[1] = tmp
;
2370 if (pkt_dev
->flags
& F_MPLS_RND
) {
2372 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
2373 if (pkt_dev
->labels
[i
] & MPLS_STACK_BOTTOM
)
2374 pkt_dev
->labels
[i
] = MPLS_STACK_BOTTOM
|
2375 ((__force __be32
)random32() &
2379 if ((pkt_dev
->flags
& F_VID_RND
) && (pkt_dev
->vlan_id
!= 0xffff)) {
2380 pkt_dev
->vlan_id
= random32() & (4096-1);
2383 if ((pkt_dev
->flags
& F_SVID_RND
) && (pkt_dev
->svlan_id
!= 0xffff)) {
2384 pkt_dev
->svlan_id
= random32() & (4096 - 1);
2387 if (pkt_dev
->udp_src_min
< pkt_dev
->udp_src_max
) {
2388 if (pkt_dev
->flags
& F_UDPSRC_RND
)
2389 pkt_dev
->cur_udp_src
= random32() %
2390 (pkt_dev
->udp_src_max
- pkt_dev
->udp_src_min
)
2391 + pkt_dev
->udp_src_min
;
2394 pkt_dev
->cur_udp_src
++;
2395 if (pkt_dev
->cur_udp_src
>= pkt_dev
->udp_src_max
)
2396 pkt_dev
->cur_udp_src
= pkt_dev
->udp_src_min
;
2400 if (pkt_dev
->udp_dst_min
< pkt_dev
->udp_dst_max
) {
2401 if (pkt_dev
->flags
& F_UDPDST_RND
) {
2402 pkt_dev
->cur_udp_dst
= random32() %
2403 (pkt_dev
->udp_dst_max
- pkt_dev
->udp_dst_min
)
2404 + pkt_dev
->udp_dst_min
;
2406 pkt_dev
->cur_udp_dst
++;
2407 if (pkt_dev
->cur_udp_dst
>= pkt_dev
->udp_dst_max
)
2408 pkt_dev
->cur_udp_dst
= pkt_dev
->udp_dst_min
;
2412 if (!(pkt_dev
->flags
& F_IPV6
)) {
2414 imn
= ntohl(pkt_dev
->saddr_min
);
2415 imx
= ntohl(pkt_dev
->saddr_max
);
2418 if (pkt_dev
->flags
& F_IPSRC_RND
)
2419 t
= random32() % (imx
- imn
) + imn
;
2421 t
= ntohl(pkt_dev
->cur_saddr
);
2427 pkt_dev
->cur_saddr
= htonl(t
);
2430 if (pkt_dev
->cflows
&& f_seen(pkt_dev
, flow
)) {
2431 pkt_dev
->cur_daddr
= pkt_dev
->flows
[flow
].cur_daddr
;
2433 imn
= ntohl(pkt_dev
->daddr_min
);
2434 imx
= ntohl(pkt_dev
->daddr_max
);
2438 if (pkt_dev
->flags
& F_IPDST_RND
) {
2440 t
= random32() % (imx
- imn
) + imn
;
2443 while (ipv4_is_loopback(s
) ||
2444 ipv4_is_multicast(s
) ||
2445 ipv4_is_lbcast(s
) ||
2446 ipv4_is_zeronet(s
) ||
2447 ipv4_is_local_multicast(s
)) {
2448 t
= random32() % (imx
- imn
) + imn
;
2451 pkt_dev
->cur_daddr
= s
;
2453 t
= ntohl(pkt_dev
->cur_daddr
);
2458 pkt_dev
->cur_daddr
= htonl(t
);
2461 if (pkt_dev
->cflows
) {
2462 pkt_dev
->flows
[flow
].flags
|= F_INIT
;
2463 pkt_dev
->flows
[flow
].cur_daddr
=
2466 if (pkt_dev
->flags
& F_IPSEC_ON
)
2467 get_ipsec_sa(pkt_dev
, flow
);
2472 } else { /* IPV6 * */
2474 if (pkt_dev
->min_in6_daddr
.s6_addr32
[0] == 0 &&
2475 pkt_dev
->min_in6_daddr
.s6_addr32
[1] == 0 &&
2476 pkt_dev
->min_in6_daddr
.s6_addr32
[2] == 0 &&
2477 pkt_dev
->min_in6_daddr
.s6_addr32
[3] == 0) ;
2481 /* Only random destinations yet */
2483 for (i
= 0; i
< 4; i
++) {
2484 pkt_dev
->cur_in6_daddr
.s6_addr32
[i
] =
2485 (((__force __be32
)random32() |
2486 pkt_dev
->min_in6_daddr
.s6_addr32
[i
]) &
2487 pkt_dev
->max_in6_daddr
.s6_addr32
[i
]);
2492 if (pkt_dev
->min_pkt_size
< pkt_dev
->max_pkt_size
) {
2494 if (pkt_dev
->flags
& F_TXSIZE_RND
) {
2496 (pkt_dev
->max_pkt_size
- pkt_dev
->min_pkt_size
)
2497 + pkt_dev
->min_pkt_size
;
2499 t
= pkt_dev
->cur_pkt_size
+ 1;
2500 if (t
> pkt_dev
->max_pkt_size
)
2501 t
= pkt_dev
->min_pkt_size
;
2503 pkt_dev
->cur_pkt_size
= t
;
2506 set_cur_queue_map(pkt_dev
);
2508 pkt_dev
->flows
[flow
].count
++;
2513 static int pktgen_output_ipsec(struct sk_buff
*skb
, struct pktgen_dev
*pkt_dev
)
2515 struct xfrm_state
*x
= pkt_dev
->flows
[pkt_dev
->curfl
].x
;
2520 /* XXX: we dont support tunnel mode for now until
2521 * we resolve the dst issue */
2522 if (x
->props
.mode
!= XFRM_MODE_TRANSPORT
)
2525 spin_lock(&x
->lock
);
2527 err
= x
->outer_mode
->output(x
, skb
);
2530 err
= x
->type
->output(x
, skb
);
2534 x
->curlft
.bytes
+= skb
->len
;
2535 x
->curlft
.packets
++;
2537 spin_unlock(&x
->lock
);
2541 static void free_SAs(struct pktgen_dev
*pkt_dev
)
2543 if (pkt_dev
->cflows
) {
2544 /* let go of the SAs if we have them */
2546 for (i
= 0; i
< pkt_dev
->cflows
; i
++) {
2547 struct xfrm_state
*x
= pkt_dev
->flows
[i
].x
;
2550 pkt_dev
->flows
[i
].x
= NULL
;
2556 static int process_ipsec(struct pktgen_dev
*pkt_dev
,
2557 struct sk_buff
*skb
, __be16 protocol
)
2559 if (pkt_dev
->flags
& F_IPSEC_ON
) {
2560 struct xfrm_state
*x
= pkt_dev
->flows
[pkt_dev
->curfl
].x
;
2565 nhead
= x
->props
.header_len
- skb_headroom(skb
);
2567 ret
= pskb_expand_head(skb
, nhead
, 0, GFP_ATOMIC
);
2569 pr_err("Error expanding ipsec packet %d\n",
2575 /* ipsec is not expecting ll header */
2576 skb_pull(skb
, ETH_HLEN
);
2577 ret
= pktgen_output_ipsec(skb
, pkt_dev
);
2579 pr_err("Error creating ipsec packet %d\n", ret
);
2583 eth
= (__u8
*) skb_push(skb
, ETH_HLEN
);
2584 memcpy(eth
, pkt_dev
->hh
, 12);
2585 *(u16
*) ð
[12] = protocol
;
2595 static void mpls_push(__be32
*mpls
, struct pktgen_dev
*pkt_dev
)
2598 for (i
= 0; i
< pkt_dev
->nr_labels
; i
++)
2599 *mpls
++ = pkt_dev
->labels
[i
] & ~MPLS_STACK_BOTTOM
;
2602 *mpls
|= MPLS_STACK_BOTTOM
;
2605 static inline __be16
build_tci(unsigned int id
, unsigned int cfi
,
2608 return htons(id
| (cfi
<< 12) | (prio
<< 13));
2611 static void pktgen_finalize_skb(struct pktgen_dev
*pkt_dev
, struct sk_buff
*skb
,
2614 struct timeval timestamp
;
2615 struct pktgen_hdr
*pgh
;
2617 pgh
= (struct pktgen_hdr
*)skb_put(skb
, sizeof(*pgh
));
2618 datalen
-= sizeof(*pgh
);
2620 if (pkt_dev
->nfrags
<= 0) {
2621 memset(skb_put(skb
, datalen
), 0, datalen
);
2623 int frags
= pkt_dev
->nfrags
;
2628 if (frags
> MAX_SKB_FRAGS
)
2629 frags
= MAX_SKB_FRAGS
;
2630 len
= datalen
- frags
* PAGE_SIZE
;
2632 memset(skb_put(skb
, len
), 0, len
);
2633 datalen
= frags
* PAGE_SIZE
;
2637 frag_len
= (datalen
/frags
) < PAGE_SIZE
?
2638 (datalen
/frags
) : PAGE_SIZE
;
2639 while (datalen
> 0) {
2640 if (unlikely(!pkt_dev
->page
)) {
2641 int node
= numa_node_id();
2643 if (pkt_dev
->node
>= 0 && (pkt_dev
->flags
& F_NODE
))
2644 node
= pkt_dev
->node
;
2645 pkt_dev
->page
= alloc_pages_node(node
, GFP_KERNEL
| __GFP_ZERO
, 0);
2649 skb_shinfo(skb
)->frags
[i
].page
= pkt_dev
->page
;
2650 get_page(pkt_dev
->page
);
2651 skb_shinfo(skb
)->frags
[i
].page_offset
= 0;
2652 /*last fragment, fill rest of data*/
2653 if (i
== (frags
- 1))
2654 skb_shinfo(skb
)->frags
[i
].size
=
2655 (datalen
< PAGE_SIZE
? datalen
: PAGE_SIZE
);
2657 skb_shinfo(skb
)->frags
[i
].size
= frag_len
;
2658 datalen
-= skb_shinfo(skb
)->frags
[i
].size
;
2659 skb
->len
+= skb_shinfo(skb
)->frags
[i
].size
;
2660 skb
->data_len
+= skb_shinfo(skb
)->frags
[i
].size
;
2662 skb_shinfo(skb
)->nr_frags
= i
;
2666 /* Stamp the time, and sequence number,
2667 * convert them to network byte order
2669 pgh
->pgh_magic
= htonl(PKTGEN_MAGIC
);
2670 pgh
->seq_num
= htonl(pkt_dev
->seq_num
);
2672 do_gettimeofday(×tamp
);
2673 pgh
->tv_sec
= htonl(timestamp
.tv_sec
);
2674 pgh
->tv_usec
= htonl(timestamp
.tv_usec
);
2677 static struct sk_buff
*fill_packet_ipv4(struct net_device
*odev
,
2678 struct pktgen_dev
*pkt_dev
)
2680 struct sk_buff
*skb
= NULL
;
2682 struct udphdr
*udph
;
2685 __be16 protocol
= htons(ETH_P_IP
);
2687 __be16
*vlan_tci
= NULL
; /* Encapsulates priority and VLAN ID */
2688 __be16
*vlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for VLAN tag */
2689 __be16
*svlan_tci
= NULL
; /* Encapsulates priority and SVLAN ID */
2690 __be16
*svlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for SVLAN tag */
2693 if (pkt_dev
->nr_labels
)
2694 protocol
= htons(ETH_P_MPLS_UC
);
2696 if (pkt_dev
->vlan_id
!= 0xffff)
2697 protocol
= htons(ETH_P_8021Q
);
2699 /* Update any of the values, used when we're incrementing various
2702 mod_cur_headers(pkt_dev
);
2703 queue_map
= pkt_dev
->cur_queue_map
;
2705 datalen
= (odev
->hard_header_len
+ 16) & ~0xf;
2707 if (pkt_dev
->flags
& F_NODE
) {
2710 if (pkt_dev
->node
>= 0)
2711 node
= pkt_dev
->node
;
2713 node
= numa_node_id();
2715 skb
= __alloc_skb(NET_SKB_PAD
+ pkt_dev
->cur_pkt_size
+ 64
2716 + datalen
+ pkt_dev
->pkt_overhead
, GFP_NOWAIT
, 0, node
);
2718 skb_reserve(skb
, NET_SKB_PAD
);
2723 skb
= __netdev_alloc_skb(odev
,
2724 pkt_dev
->cur_pkt_size
+ 64
2725 + datalen
+ pkt_dev
->pkt_overhead
, GFP_NOWAIT
);
2728 sprintf(pkt_dev
->result
, "No memory");
2731 prefetchw(skb
->data
);
2733 skb_reserve(skb
, datalen
);
2735 /* Reserve for ethernet and IP header */
2736 eth
= (__u8
*) skb_push(skb
, 14);
2737 mpls
= (__be32
*)skb_put(skb
, pkt_dev
->nr_labels
*sizeof(__u32
));
2738 if (pkt_dev
->nr_labels
)
2739 mpls_push(mpls
, pkt_dev
);
2741 if (pkt_dev
->vlan_id
!= 0xffff) {
2742 if (pkt_dev
->svlan_id
!= 0xffff) {
2743 svlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2744 *svlan_tci
= build_tci(pkt_dev
->svlan_id
,
2747 svlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2748 *svlan_encapsulated_proto
= htons(ETH_P_8021Q
);
2750 vlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2751 *vlan_tci
= build_tci(pkt_dev
->vlan_id
,
2754 vlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
2755 *vlan_encapsulated_proto
= htons(ETH_P_IP
);
2758 skb
->network_header
= skb
->tail
;
2759 skb
->transport_header
= skb
->network_header
+ sizeof(struct iphdr
);
2760 skb_put(skb
, sizeof(struct iphdr
) + sizeof(struct udphdr
));
2761 skb_set_queue_mapping(skb
, queue_map
);
2762 skb
->priority
= pkt_dev
->skb_priority
;
2765 udph
= udp_hdr(skb
);
2767 memcpy(eth
, pkt_dev
->hh
, 12);
2768 *(__be16
*) & eth
[12] = protocol
;
2770 /* Eth + IPh + UDPh + mpls */
2771 datalen
= pkt_dev
->cur_pkt_size
- 14 - 20 - 8 -
2772 pkt_dev
->pkt_overhead
;
2773 if (datalen
< sizeof(struct pktgen_hdr
))
2774 datalen
= sizeof(struct pktgen_hdr
);
2776 udph
->source
= htons(pkt_dev
->cur_udp_src
);
2777 udph
->dest
= htons(pkt_dev
->cur_udp_dst
);
2778 udph
->len
= htons(datalen
+ 8); /* DATA + udphdr */
2779 udph
->check
= 0; /* No checksum */
2784 iph
->tos
= pkt_dev
->tos
;
2785 iph
->protocol
= IPPROTO_UDP
; /* UDP */
2786 iph
->saddr
= pkt_dev
->cur_saddr
;
2787 iph
->daddr
= pkt_dev
->cur_daddr
;
2788 iph
->id
= htons(pkt_dev
->ip_id
);
2791 iplen
= 20 + 8 + datalen
;
2792 iph
->tot_len
= htons(iplen
);
2794 iph
->check
= ip_fast_csum((void *)iph
, iph
->ihl
);
2795 skb
->protocol
= protocol
;
2796 skb
->mac_header
= (skb
->network_header
- ETH_HLEN
-
2797 pkt_dev
->pkt_overhead
);
2799 skb
->pkt_type
= PACKET_HOST
;
2800 pktgen_finalize_skb(pkt_dev
, skb
, datalen
);
2803 if (!process_ipsec(pkt_dev
, skb
, protocol
))
2811 * scan_ip6, fmt_ip taken from dietlibc-0.21
2812 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2814 * Slightly modified for kernel.
2815 * Should be candidate for net/ipv4/utils.c
2819 static unsigned int scan_ip6(const char *s
, char ip
[16])
2822 unsigned int len
= 0;
2825 unsigned int prefixlen
= 0;
2826 unsigned int suffixlen
= 0;
2830 for (i
= 0; i
< 16; i
++)
2836 if (s
[1] == ':') { /* Found "::", skip to part 2 */
2844 u
= simple_strtoul(s
, &pos
, 16);
2848 if (prefixlen
== 12 && s
[i
] == '.') {
2850 /* the last 4 bytes may be written as IPv4 address */
2853 memcpy((struct in_addr
*)(ip
+ 12), &tmp
, sizeof(tmp
));
2856 ip
[prefixlen
++] = (u
>> 8);
2857 ip
[prefixlen
++] = (u
& 255);
2860 if (prefixlen
== 16)
2864 /* part 2, after "::" */
2871 } else if (suffixlen
!= 0)
2874 u
= simple_strtol(s
, &pos
, 16);
2881 if (suffixlen
+ prefixlen
<= 12 && s
[i
] == '.') {
2883 memcpy((struct in_addr
*)(suffix
+ suffixlen
), &tmp
,
2889 suffix
[suffixlen
++] = (u
>> 8);
2890 suffix
[suffixlen
++] = (u
& 255);
2893 if (prefixlen
+ suffixlen
== 16)
2896 for (i
= 0; i
< suffixlen
; i
++)
2897 ip
[16 - suffixlen
+ i
] = suffix
[i
];
2901 static char tohex(char hexdigit
)
2903 return hexdigit
> 9 ? hexdigit
+ 'a' - 10 : hexdigit
+ '0';
2906 static int fmt_xlong(char *s
, unsigned int i
)
2909 *s
= tohex((i
>> 12) & 0xf);
2910 if (s
!= bak
|| *s
!= '0')
2912 *s
= tohex((i
>> 8) & 0xf);
2913 if (s
!= bak
|| *s
!= '0')
2915 *s
= tohex((i
>> 4) & 0xf);
2916 if (s
!= bak
|| *s
!= '0')
2918 *s
= tohex(i
& 0xf);
2922 static unsigned int fmt_ip6(char *s
, const char ip
[16])
2927 unsigned int compressing
;
2932 for (j
= 0; j
< 16; j
+= 2) {
2934 #ifdef V4MAPPEDPREFIX
2935 if (j
== 12 && !memcmp(ip
, V4mappedprefix
, 12)) {
2936 inet_ntoa_r(*(struct in_addr
*)(ip
+ 12), s
);
2941 temp
= ((unsigned long)(unsigned char)ip
[j
] << 8) +
2942 (unsigned long)(unsigned char)ip
[j
+ 1];
2957 i
= fmt_xlong(s
, temp
);
2974 static struct sk_buff
*fill_packet_ipv6(struct net_device
*odev
,
2975 struct pktgen_dev
*pkt_dev
)
2977 struct sk_buff
*skb
= NULL
;
2979 struct udphdr
*udph
;
2981 struct ipv6hdr
*iph
;
2982 __be16 protocol
= htons(ETH_P_IPV6
);
2984 __be16
*vlan_tci
= NULL
; /* Encapsulates priority and VLAN ID */
2985 __be16
*vlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for VLAN tag */
2986 __be16
*svlan_tci
= NULL
; /* Encapsulates priority and SVLAN ID */
2987 __be16
*svlan_encapsulated_proto
= NULL
; /* packet type ID field (or len) for SVLAN tag */
2990 if (pkt_dev
->nr_labels
)
2991 protocol
= htons(ETH_P_MPLS_UC
);
2993 if (pkt_dev
->vlan_id
!= 0xffff)
2994 protocol
= htons(ETH_P_8021Q
);
2996 /* Update any of the values, used when we're incrementing various
2999 mod_cur_headers(pkt_dev
);
3000 queue_map
= pkt_dev
->cur_queue_map
;
3002 skb
= __netdev_alloc_skb(odev
,
3003 pkt_dev
->cur_pkt_size
+ 64
3004 + 16 + pkt_dev
->pkt_overhead
, GFP_NOWAIT
);
3006 sprintf(pkt_dev
->result
, "No memory");
3009 prefetchw(skb
->data
);
3011 skb_reserve(skb
, 16);
3013 /* Reserve for ethernet and IP header */
3014 eth
= (__u8
*) skb_push(skb
, 14);
3015 mpls
= (__be32
*)skb_put(skb
, pkt_dev
->nr_labels
*sizeof(__u32
));
3016 if (pkt_dev
->nr_labels
)
3017 mpls_push(mpls
, pkt_dev
);
3019 if (pkt_dev
->vlan_id
!= 0xffff) {
3020 if (pkt_dev
->svlan_id
!= 0xffff) {
3021 svlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3022 *svlan_tci
= build_tci(pkt_dev
->svlan_id
,
3025 svlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3026 *svlan_encapsulated_proto
= htons(ETH_P_8021Q
);
3028 vlan_tci
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3029 *vlan_tci
= build_tci(pkt_dev
->vlan_id
,
3032 vlan_encapsulated_proto
= (__be16
*)skb_put(skb
, sizeof(__be16
));
3033 *vlan_encapsulated_proto
= htons(ETH_P_IPV6
);
3036 skb
->network_header
= skb
->tail
;
3037 skb
->transport_header
= skb
->network_header
+ sizeof(struct ipv6hdr
);
3038 skb_put(skb
, sizeof(struct ipv6hdr
) + sizeof(struct udphdr
));
3039 skb_set_queue_mapping(skb
, queue_map
);
3040 skb
->priority
= pkt_dev
->skb_priority
;
3041 iph
= ipv6_hdr(skb
);
3042 udph
= udp_hdr(skb
);
3044 memcpy(eth
, pkt_dev
->hh
, 12);
3045 *(__be16
*) ð
[12] = protocol
;
3047 /* Eth + IPh + UDPh + mpls */
3048 datalen
= pkt_dev
->cur_pkt_size
- 14 -
3049 sizeof(struct ipv6hdr
) - sizeof(struct udphdr
) -
3050 pkt_dev
->pkt_overhead
;
3052 if (datalen
< sizeof(struct pktgen_hdr
)) {
3053 datalen
= sizeof(struct pktgen_hdr
);
3054 if (net_ratelimit())
3055 pr_info("increased datalen to %d\n", datalen
);
3058 udph
->source
= htons(pkt_dev
->cur_udp_src
);
3059 udph
->dest
= htons(pkt_dev
->cur_udp_dst
);
3060 udph
->len
= htons(datalen
+ sizeof(struct udphdr
));
3061 udph
->check
= 0; /* No checksum */
3063 *(__be32
*) iph
= htonl(0x60000000); /* Version + flow */
3065 if (pkt_dev
->traffic_class
) {
3066 /* Version + traffic class + flow (0) */
3067 *(__be32
*)iph
|= htonl(0x60000000 | (pkt_dev
->traffic_class
<< 20));
3070 iph
->hop_limit
= 32;
3072 iph
->payload_len
= htons(sizeof(struct udphdr
) + datalen
);
3073 iph
->nexthdr
= IPPROTO_UDP
;
3075 ipv6_addr_copy(&iph
->daddr
, &pkt_dev
->cur_in6_daddr
);
3076 ipv6_addr_copy(&iph
->saddr
, &pkt_dev
->cur_in6_saddr
);
3078 skb
->mac_header
= (skb
->network_header
- ETH_HLEN
-
3079 pkt_dev
->pkt_overhead
);
3080 skb
->protocol
= protocol
;
3082 skb
->pkt_type
= PACKET_HOST
;
3084 pktgen_finalize_skb(pkt_dev
, skb
, datalen
);
3089 static struct sk_buff
*fill_packet(struct net_device
*odev
,
3090 struct pktgen_dev
*pkt_dev
)
3092 if (pkt_dev
->flags
& F_IPV6
)
3093 return fill_packet_ipv6(odev
, pkt_dev
);
3095 return fill_packet_ipv4(odev
, pkt_dev
);
3098 static void pktgen_clear_counters(struct pktgen_dev
*pkt_dev
)
3100 pkt_dev
->seq_num
= 1;
3101 pkt_dev
->idle_acc
= 0;
3103 pkt_dev
->tx_bytes
= 0;
3104 pkt_dev
->errors
= 0;
3107 /* Set up structure for sending pkts, clear counters */
3109 static void pktgen_run(struct pktgen_thread
*t
)
3111 struct pktgen_dev
*pkt_dev
;
3117 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3120 * setup odev and create initial packet.
3122 pktgen_setup_inject(pkt_dev
);
3124 if (pkt_dev
->odev
) {
3125 pktgen_clear_counters(pkt_dev
);
3126 pkt_dev
->running
= 1; /* Cranke yeself! */
3127 pkt_dev
->skb
= NULL
;
3128 pkt_dev
->started_at
=
3129 pkt_dev
->next_tx
= ktime_now();
3131 set_pkt_overhead(pkt_dev
);
3133 strcpy(pkt_dev
->result
, "Starting");
3136 strcpy(pkt_dev
->result
, "Error starting");
3140 t
->control
&= ~(T_STOP
);
3143 static void pktgen_stop_all_threads_ifs(void)
3145 struct pktgen_thread
*t
;
3149 mutex_lock(&pktgen_thread_lock
);
3151 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3152 t
->control
|= T_STOP
;
3154 mutex_unlock(&pktgen_thread_lock
);
3157 static int thread_is_running(const struct pktgen_thread
*t
)
3159 const struct pktgen_dev
*pkt_dev
;
3161 list_for_each_entry(pkt_dev
, &t
->if_list
, list
)
3162 if (pkt_dev
->running
)
3167 static int pktgen_wait_thread_run(struct pktgen_thread
*t
)
3171 while (thread_is_running(t
)) {
3175 msleep_interruptible(100);
3177 if (signal_pending(current
))
3187 static int pktgen_wait_all_threads_run(void)
3189 struct pktgen_thread
*t
;
3192 mutex_lock(&pktgen_thread_lock
);
3194 list_for_each_entry(t
, &pktgen_threads
, th_list
) {
3195 sig
= pktgen_wait_thread_run(t
);
3201 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3202 t
->control
|= (T_STOP
);
3204 mutex_unlock(&pktgen_thread_lock
);
3208 static void pktgen_run_all_threads(void)
3210 struct pktgen_thread
*t
;
3214 mutex_lock(&pktgen_thread_lock
);
3216 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3217 t
->control
|= (T_RUN
);
3219 mutex_unlock(&pktgen_thread_lock
);
3221 /* Propagate thread->control */
3222 schedule_timeout_interruptible(msecs_to_jiffies(125));
3224 pktgen_wait_all_threads_run();
3227 static void pktgen_reset_all_threads(void)
3229 struct pktgen_thread
*t
;
3233 mutex_lock(&pktgen_thread_lock
);
3235 list_for_each_entry(t
, &pktgen_threads
, th_list
)
3236 t
->control
|= (T_REMDEVALL
);
3238 mutex_unlock(&pktgen_thread_lock
);
3240 /* Propagate thread->control */
3241 schedule_timeout_interruptible(msecs_to_jiffies(125));
3243 pktgen_wait_all_threads_run();
3246 static void show_results(struct pktgen_dev
*pkt_dev
, int nr_frags
)
3248 __u64 bps
, mbps
, pps
;
3249 char *p
= pkt_dev
->result
;
3250 ktime_t elapsed
= ktime_sub(pkt_dev
->stopped_at
,
3251 pkt_dev
->started_at
);
3252 ktime_t idle
= ns_to_ktime(pkt_dev
->idle_acc
);
3254 p
+= sprintf(p
, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
3255 (unsigned long long)ktime_to_us(elapsed
),
3256 (unsigned long long)ktime_to_us(ktime_sub(elapsed
, idle
)),
3257 (unsigned long long)ktime_to_us(idle
),
3258 (unsigned long long)pkt_dev
->sofar
,
3259 pkt_dev
->cur_pkt_size
, nr_frags
);
3261 pps
= div64_u64(pkt_dev
->sofar
* NSEC_PER_SEC
,
3262 ktime_to_ns(elapsed
));
3264 bps
= pps
* 8 * pkt_dev
->cur_pkt_size
;
3267 do_div(mbps
, 1000000);
3268 p
+= sprintf(p
, " %llupps %lluMb/sec (%llubps) errors: %llu",
3269 (unsigned long long)pps
,
3270 (unsigned long long)mbps
,
3271 (unsigned long long)bps
,
3272 (unsigned long long)pkt_dev
->errors
);
3275 /* Set stopped-at timer, remove from running list, do counters & statistics */
3276 static int pktgen_stop_device(struct pktgen_dev
*pkt_dev
)
3278 int nr_frags
= pkt_dev
->skb
? skb_shinfo(pkt_dev
->skb
)->nr_frags
: -1;
3280 if (!pkt_dev
->running
) {
3281 pr_warning("interface: %s is already stopped\n",
3286 kfree_skb(pkt_dev
->skb
);
3287 pkt_dev
->skb
= NULL
;
3288 pkt_dev
->stopped_at
= ktime_now();
3289 pkt_dev
->running
= 0;
3291 show_results(pkt_dev
, nr_frags
);
3296 static struct pktgen_dev
*next_to_run(struct pktgen_thread
*t
)
3298 struct pktgen_dev
*pkt_dev
, *best
= NULL
;
3302 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3303 if (!pkt_dev
->running
)
3307 else if (ktime_lt(pkt_dev
->next_tx
, best
->next_tx
))
3314 static void pktgen_stop(struct pktgen_thread
*t
)
3316 struct pktgen_dev
*pkt_dev
;
3322 list_for_each_entry(pkt_dev
, &t
->if_list
, list
) {
3323 pktgen_stop_device(pkt_dev
);
3330 * one of our devices needs to be removed - find it
3333 static void pktgen_rem_one_if(struct pktgen_thread
*t
)
3335 struct list_head
*q
, *n
;
3336 struct pktgen_dev
*cur
;
3342 list_for_each_safe(q
, n
, &t
->if_list
) {
3343 cur
= list_entry(q
, struct pktgen_dev
, list
);
3345 if (!cur
->removal_mark
)
3348 kfree_skb(cur
->skb
);
3351 pktgen_remove_device(t
, cur
);
3359 static void pktgen_rem_all_ifs(struct pktgen_thread
*t
)
3361 struct list_head
*q
, *n
;
3362 struct pktgen_dev
*cur
;
3366 /* Remove all devices, free mem */
3370 list_for_each_safe(q
, n
, &t
->if_list
) {
3371 cur
= list_entry(q
, struct pktgen_dev
, list
);
3373 kfree_skb(cur
->skb
);
3376 pktgen_remove_device(t
, cur
);
3382 static void pktgen_rem_thread(struct pktgen_thread
*t
)
3384 /* Remove from the thread list */
3386 remove_proc_entry(t
->tsk
->comm
, pg_proc_dir
);
3390 static void pktgen_resched(struct pktgen_dev
*pkt_dev
)
3392 ktime_t idle_start
= ktime_now();
3394 pkt_dev
->idle_acc
+= ktime_to_ns(ktime_sub(ktime_now(), idle_start
));
3397 static void pktgen_wait_for_skb(struct pktgen_dev
*pkt_dev
)
3399 ktime_t idle_start
= ktime_now();
3401 while (atomic_read(&(pkt_dev
->skb
->users
)) != 1) {
3402 if (signal_pending(current
))
3406 pktgen_resched(pkt_dev
);
3410 pkt_dev
->idle_acc
+= ktime_to_ns(ktime_sub(ktime_now(), idle_start
));
3413 static void pktgen_xmit(struct pktgen_dev
*pkt_dev
)
3415 struct net_device
*odev
= pkt_dev
->odev
;
3416 netdev_tx_t (*xmit
)(struct sk_buff
*, struct net_device
*)
3417 = odev
->netdev_ops
->ndo_start_xmit
;
3418 struct netdev_queue
*txq
;
3422 /* If device is offline, then don't send */
3423 if (unlikely(!netif_running(odev
) || !netif_carrier_ok(odev
))) {
3424 pktgen_stop_device(pkt_dev
);
3428 /* This is max DELAY, this has special meaning of
3431 if (unlikely(pkt_dev
->delay
== ULLONG_MAX
)) {
3432 pkt_dev
->next_tx
= ktime_add_ns(ktime_now(), ULONG_MAX
);
3436 /* If no skb or clone count exhausted then get new one */
3437 if (!pkt_dev
->skb
|| (pkt_dev
->last_ok
&&
3438 ++pkt_dev
->clone_count
>= pkt_dev
->clone_skb
)) {
3439 /* build a new pkt */
3440 kfree_skb(pkt_dev
->skb
);
3442 pkt_dev
->skb
= fill_packet(odev
, pkt_dev
);
3443 if (pkt_dev
->skb
== NULL
) {
3444 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
3446 pkt_dev
->clone_count
--; /* back out increment, OOM */
3449 pkt_dev
->last_pkt_size
= pkt_dev
->skb
->len
;
3450 pkt_dev
->allocated_skbs
++;
3451 pkt_dev
->clone_count
= 0; /* reset counter */
3454 if (pkt_dev
->delay
&& pkt_dev
->last_ok
)
3455 spin(pkt_dev
, pkt_dev
->next_tx
);
3457 queue_map
= skb_get_queue_mapping(pkt_dev
->skb
);
3458 txq
= netdev_get_tx_queue(odev
, queue_map
);
3460 __netif_tx_lock_bh(txq
);
3462 if (unlikely(netif_tx_queue_frozen_or_stopped(txq
))) {
3463 ret
= NETDEV_TX_BUSY
;
3464 pkt_dev
->last_ok
= 0;
3467 atomic_inc(&(pkt_dev
->skb
->users
));
3468 ret
= (*xmit
)(pkt_dev
->skb
, odev
);
3472 txq_trans_update(txq
);
3473 pkt_dev
->last_ok
= 1;
3476 pkt_dev
->tx_bytes
+= pkt_dev
->last_pkt_size
;
3480 case NET_XMIT_POLICED
:
3481 /* skb has been consumed */
3484 default: /* Drivers are not supposed to return other values! */
3485 if (net_ratelimit())
3486 pr_info("%s xmit error: %d\n", pkt_dev
->odevname
, ret
);
3489 case NETDEV_TX_LOCKED
:
3490 case NETDEV_TX_BUSY
:
3491 /* Retry it next time */
3492 atomic_dec(&(pkt_dev
->skb
->users
));
3493 pkt_dev
->last_ok
= 0;
3496 __netif_tx_unlock_bh(txq
);
3498 /* If pkt_dev->count is zero, then run forever */
3499 if ((pkt_dev
->count
!= 0) && (pkt_dev
->sofar
>= pkt_dev
->count
)) {
3500 pktgen_wait_for_skb(pkt_dev
);
3502 /* Done with this */
3503 pktgen_stop_device(pkt_dev
);
3508 * Main loop of the thread goes here
3511 static int pktgen_thread_worker(void *arg
)
3514 struct pktgen_thread
*t
= arg
;
3515 struct pktgen_dev
*pkt_dev
= NULL
;
3518 BUG_ON(smp_processor_id() != cpu
);
3520 init_waitqueue_head(&t
->queue
);
3521 complete(&t
->start_done
);
3523 pr_debug("starting pktgen/%d: pid=%d\n", cpu
, task_pid_nr(current
));
3525 set_current_state(TASK_INTERRUPTIBLE
);
3529 while (!kthread_should_stop()) {
3530 pkt_dev
= next_to_run(t
);
3532 if (unlikely(!pkt_dev
&& t
->control
== 0)) {
3535 wait_event_interruptible_timeout(t
->queue
,
3542 __set_current_state(TASK_RUNNING
);
3544 if (likely(pkt_dev
)) {
3545 pktgen_xmit(pkt_dev
);
3548 pktgen_resched(pkt_dev
);
3553 if (t
->control
& T_STOP
) {
3555 t
->control
&= ~(T_STOP
);
3558 if (t
->control
& T_RUN
) {
3560 t
->control
&= ~(T_RUN
);
3563 if (t
->control
& T_REMDEVALL
) {
3564 pktgen_rem_all_ifs(t
);
3565 t
->control
&= ~(T_REMDEVALL
);
3568 if (t
->control
& T_REMDEV
) {
3569 pktgen_rem_one_if(t
);
3570 t
->control
&= ~(T_REMDEV
);
3575 set_current_state(TASK_INTERRUPTIBLE
);
3578 pr_debug("%s stopping all device\n", t
->tsk
->comm
);
3581 pr_debug("%s removing all device\n", t
->tsk
->comm
);
3582 pktgen_rem_all_ifs(t
);
3584 pr_debug("%s removing thread\n", t
->tsk
->comm
);
3585 pktgen_rem_thread(t
);
3587 /* Wait for kthread_stop */
3588 while (!kthread_should_stop()) {
3589 set_current_state(TASK_INTERRUPTIBLE
);
3592 __set_current_state(TASK_RUNNING
);
3597 static struct pktgen_dev
*pktgen_find_dev(struct pktgen_thread
*t
,
3598 const char *ifname
, bool exact
)
3600 struct pktgen_dev
*p
, *pkt_dev
= NULL
;
3601 size_t len
= strlen(ifname
);
3604 list_for_each_entry(p
, &t
->if_list
, list
)
3605 if (strncmp(p
->odevname
, ifname
, len
) == 0) {
3606 if (p
->odevname
[len
]) {
3607 if (exact
|| p
->odevname
[len
] != '@')
3615 pr_debug("find_dev(%s) returning %p\n", ifname
, pkt_dev
);
3620 * Adds a dev at front of if_list.
3623 static int add_dev_to_thread(struct pktgen_thread
*t
,
3624 struct pktgen_dev
*pkt_dev
)
3630 if (pkt_dev
->pg_thread
) {
3631 pr_err("ERROR: already assigned to a thread\n");
3636 list_add(&pkt_dev
->list
, &t
->if_list
);
3637 pkt_dev
->pg_thread
= t
;
3638 pkt_dev
->running
= 0;
3645 /* Called under thread lock */
3647 static int pktgen_add_device(struct pktgen_thread
*t
, const char *ifname
)
3649 struct pktgen_dev
*pkt_dev
;
3651 int node
= cpu_to_node(t
->cpu
);
3653 /* We don't allow a device to be on several threads */
3655 pkt_dev
= __pktgen_NN_threads(ifname
, FIND
);
3657 pr_err("ERROR: interface already used\n");
3661 pkt_dev
= kzalloc_node(sizeof(struct pktgen_dev
), GFP_KERNEL
, node
);
3665 strcpy(pkt_dev
->odevname
, ifname
);
3666 pkt_dev
->flows
= vmalloc_node(MAX_CFLOWS
* sizeof(struct flow_state
),
3668 if (pkt_dev
->flows
== NULL
) {
3672 memset(pkt_dev
->flows
, 0, MAX_CFLOWS
* sizeof(struct flow_state
));
3674 pkt_dev
->removal_mark
= 0;
3675 pkt_dev
->min_pkt_size
= ETH_ZLEN
;
3676 pkt_dev
->max_pkt_size
= ETH_ZLEN
;
3677 pkt_dev
->nfrags
= 0;
3678 pkt_dev
->clone_skb
= pg_clone_skb_d
;
3679 pkt_dev
->delay
= pg_delay_d
;
3680 pkt_dev
->count
= pg_count_d
;
3682 pkt_dev
->udp_src_min
= 9; /* sink port */
3683 pkt_dev
->udp_src_max
= 9;
3684 pkt_dev
->udp_dst_min
= 9;
3685 pkt_dev
->udp_dst_max
= 9;
3687 pkt_dev
->vlan_p
= 0;
3688 pkt_dev
->vlan_cfi
= 0;
3689 pkt_dev
->vlan_id
= 0xffff;
3690 pkt_dev
->svlan_p
= 0;
3691 pkt_dev
->svlan_cfi
= 0;
3692 pkt_dev
->svlan_id
= 0xffff;
3695 err
= pktgen_setup_dev(pkt_dev
, ifname
);
3699 pkt_dev
->entry
= proc_create_data(ifname
, 0600, pg_proc_dir
,
3700 &pktgen_if_fops
, pkt_dev
);
3701 if (!pkt_dev
->entry
) {
3702 pr_err("cannot create %s/%s procfs entry\n",
3703 PG_PROC_DIR
, ifname
);
3708 pkt_dev
->ipsmode
= XFRM_MODE_TRANSPORT
;
3709 pkt_dev
->ipsproto
= IPPROTO_ESP
;
3712 return add_dev_to_thread(t
, pkt_dev
);
3714 dev_put(pkt_dev
->odev
);
3719 vfree(pkt_dev
->flows
);
3724 static int __init
pktgen_create_thread(int cpu
)
3726 struct pktgen_thread
*t
;
3727 struct proc_dir_entry
*pe
;
3728 struct task_struct
*p
;
3730 t
= kzalloc_node(sizeof(struct pktgen_thread
), GFP_KERNEL
,
3733 pr_err("ERROR: out of memory, can't create new thread\n");
3737 spin_lock_init(&t
->if_lock
);
3740 INIT_LIST_HEAD(&t
->if_list
);
3742 list_add_tail(&t
->th_list
, &pktgen_threads
);
3743 init_completion(&t
->start_done
);
3745 p
= kthread_create_on_node(pktgen_thread_worker
,
3748 "kpktgend_%d", cpu
);
3750 pr_err("kernel_thread() failed for cpu %d\n", t
->cpu
);
3751 list_del(&t
->th_list
);
3755 kthread_bind(p
, cpu
);
3758 pe
= proc_create_data(t
->tsk
->comm
, 0600, pg_proc_dir
,
3759 &pktgen_thread_fops
, t
);
3761 pr_err("cannot create %s/%s procfs entry\n",
3762 PG_PROC_DIR
, t
->tsk
->comm
);
3764 list_del(&t
->th_list
);
3770 wait_for_completion(&t
->start_done
);
3776 * Removes a device from the thread if_list.
3778 static void _rem_dev_from_if_list(struct pktgen_thread
*t
,
3779 struct pktgen_dev
*pkt_dev
)
3781 struct list_head
*q
, *n
;
3782 struct pktgen_dev
*p
;
3784 list_for_each_safe(q
, n
, &t
->if_list
) {
3785 p
= list_entry(q
, struct pktgen_dev
, list
);
3791 static int pktgen_remove_device(struct pktgen_thread
*t
,
3792 struct pktgen_dev
*pkt_dev
)
3795 pr_debug("remove_device pkt_dev=%p\n", pkt_dev
);
3797 if (pkt_dev
->running
) {
3798 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
3799 pktgen_stop_device(pkt_dev
);
3802 /* Dis-associate from the interface */
3804 if (pkt_dev
->odev
) {
3805 dev_put(pkt_dev
->odev
);
3806 pkt_dev
->odev
= NULL
;
3809 /* And update the thread if_list */
3811 _rem_dev_from_if_list(t
, pkt_dev
);
3814 remove_proc_entry(pkt_dev
->entry
->name
, pg_proc_dir
);
3819 vfree(pkt_dev
->flows
);
3821 put_page(pkt_dev
->page
);
3826 static int __init
pg_init(void)
3829 struct proc_dir_entry
*pe
;
3831 pr_info("%s", version
);
3833 pg_proc_dir
= proc_mkdir(PG_PROC_DIR
, init_net
.proc_net
);
3837 pe
= proc_create(PGCTRL
, 0600, pg_proc_dir
, &pktgen_fops
);
3839 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL
);
3840 proc_net_remove(&init_net
, PG_PROC_DIR
);
3844 /* Register us to receive netdevice events */
3845 register_netdevice_notifier(&pktgen_notifier_block
);
3847 for_each_online_cpu(cpu
) {
3850 err
= pktgen_create_thread(cpu
);
3852 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3856 if (list_empty(&pktgen_threads
)) {
3857 pr_err("ERROR: Initialization failed for all threads\n");
3858 unregister_netdevice_notifier(&pktgen_notifier_block
);
3859 remove_proc_entry(PGCTRL
, pg_proc_dir
);
3860 proc_net_remove(&init_net
, PG_PROC_DIR
);
3867 static void __exit
pg_cleanup(void)
3869 struct pktgen_thread
*t
;
3870 struct list_head
*q
, *n
;
3872 /* Stop all interfaces & threads */
3873 pktgen_exiting
= true;
3875 list_for_each_safe(q
, n
, &pktgen_threads
) {
3876 t
= list_entry(q
, struct pktgen_thread
, th_list
);
3877 kthread_stop(t
->tsk
);
3881 /* Un-register us from receiving netdevice events */
3882 unregister_netdevice_notifier(&pktgen_notifier_block
);
3884 /* Clean up proc file system */
3885 remove_proc_entry(PGCTRL
, pg_proc_dir
);
3886 proc_net_remove(&init_net
, PG_PROC_DIR
);
3889 module_init(pg_init
);
3890 module_exit(pg_cleanup
);
3892 MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
3893 MODULE_DESCRIPTION("Packet Generator tool");
3894 MODULE_LICENSE("GPL");
3895 MODULE_VERSION(VERSION
);
3896 module_param(pg_count_d
, int, 0);
3897 MODULE_PARM_DESC(pg_count_d
, "Default number of packets to inject");
3898 module_param(pg_delay_d
, int, 0);
3899 MODULE_PARM_DESC(pg_delay_d
, "Default delay between packets (nanoseconds)");
3900 module_param(pg_clone_skb_d
, int, 0);
3901 MODULE_PARM_DESC(pg_clone_skb_d
, "Default number of copies of the same packet");
3902 module_param(debug
, int, 0);
3903 MODULE_PARM_DESC(debug
, "Enable debugging of pktgen module");