-/* -*-linux-c-*-
- * $Id: pktgen.c,v 1.8 2002/07/15 19:30:17 robert Exp $
- * pktgen.c: Packet Generator for performance evaluation.
- *
+/*
+ * Authors:
* Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
- * Uppsala University, Sweden
+ * Uppsala University and
+ * Swedish University of Agricultural Sciences
+ *
+ * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
+ * Ben Greear <greearb@candelatech.com>
+ * Jens Låås <jens.laas@data.slu.se>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
*
* A tool for loading the network with preconfigurated packets.
* The tool is implemented as a linux module. Parameters are output
- * device, IPG (interpacket gap), number of packets, and whether
+ * device, delay (to hard_xmit), number of packets, and whether
* to use multiple SKBs or just the same one.
* pktgen uses the installed interface's output routine.
*
* Added multiskb option 020301 --DaveM
* Scaling of results. 020417--sigurdur@linpro.no
* Significant re-work of the module:
- * * Updated to support generation over multiple interfaces at once
- * by creating 32 /proc/net/pg* files. Each file can be manipulated
- * individually.
+ * * Convert to threaded model to more efficiently be able to transmit
+ * and receive on multiple interfaces at once.
* * Converted many counters to __u64 to allow longer runs.
* * Allow configuration of ranges, like min/max IP address, MACs,
* and UDP-ports, for both source and destination, and can
* set to use a random distribution or sequentially walk the range.
- * * Can now change some values after starting.
+ * * Can now change most values after starting.
* * Place 12-byte packet in UDP payload with magic number,
- * sequence number, and timestamp. Will write receiver next.
- * * The new changes seem to have a performance impact of around 1%,
- * as far as I can tell.
+ * sequence number, and timestamp.
+ * * Add receiver code that detects dropped pkts, re-ordered pkts, and
+ * latencies (with micro-second) precision.
+ * * Add IOCTL interface to easily get counters & configuration.
* --Ben Greear <greearb@candelatech.com>
- * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
*
* Renamed multiskb to clone_skb and cleaned up sending core for two distinct
* skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
* as a "fastpath" with a configurable number of clones after alloc's.
- *
* clone_skb=0 means all packets are allocated this also means ranges time
* stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
* clones.
*
* Also moved to /proc/net/pktgen/
- * --ro
+ * --ro
+ *
+ * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
+ * mistakes. Also merged in DaveM's patch in the -pre6 patch.
+ * --Ben Greear <greearb@candelatech.com>
+ *
+ * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
+ *
+ *
+ * 021124 Finished major redesign and rewrite for new functionality.
+ * See Documentation/networking/pktgen.txt for how to use this.
+ *
+ * The new operation:
+ * For each CPU one thread/process is created at start. This process checks
+ * for running devices in the if_list and sends packets until count is 0 it
+ * also the thread checks the thread->control which is used for inter-process
+ * communication. controlling process "posts" operations to the threads this
+ * way. The if_lock should be possible to remove when add/rem_device is merged
+ * into this too.
+ *
+ * By design there should only be *one* "controlling" process. In practice
+ * multiple write accesses gives unpredictable result. Understood by "write"
+ * to /proc gives result code thats should be read be the "writer".
+ * For practical use this should be no problem.
+ *
+ * Note when adding devices to a specific CPU there good idea to also assign
+ * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
+ * --ro
*
* Fix refcount off by one if first packet fails, potential null deref,
* memleak 030710- KJP
*
+ * First "ranges" functionality for ipv6 030726 --ro
+ *
+ * Included flow support. 030802 ANK.
+ *
* Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
+ *
+ * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
+ * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
+ *
+ * New xmit() return, do_div and misc clean up by Stephen Hemminger
+ * <shemminger@osdl.org> 040923
+ *
+ * Randy Dunlap fixed u64 printk compiler waring
+ *
+ * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
+ * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
+ *
+ * Corrections from Nikolai Malykh (nmalykh@bilim.com)
+ * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
+ *
+ * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
+ * 050103
+ *
+ * MPLS support by Steven Whitehouse <steve@chygwyn.com>
*
- * See Documentation/networking/pktgen.txt for how to use this.
*/
-
+#include <linux/sys.h>
+#include <linux/types.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/kernel.h>
+#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <linux/sched.h>
-#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/unistd.h>
#include <linux/string.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
-#include <linux/slab.h>
#include <linux/interrupt.h>
-#include <linux/pci.h>
+#include <linux/capability.h>
#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/list.h>
#include <linux/init.h>
-#include <linux/inet.h>
-#include <asm/byteorder.h>
-#include <asm/bitops.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/uaccess.h>
-
-#include <linux/in.h>
-#include <linux/ip.h>
-#include <linux/udp.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
+#include <linux/inet.h>
#include <linux/inetdevice.h>
#include <linux/rtnetlink.h>
-#include <linux/proc_fs.h>
#include <linux/if_arp.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/udp.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/wait.h>
+#include <linux/etherdevice.h>
#include <net/checksum.h>
+#include <net/ipv6.h>
+#include <net/addrconf.h>
+#include <asm/byteorder.h>
+#include <linux/rcupdate.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/uaccess.h>
+#include <asm/div64.h> /* do_div */
#include <asm/timex.h>
-#define cycles() ((u32)get_cycles())
+#define VERSION "pktgen v2.67: Packet Generator for packet performance testing.\n"
+
+/* #define PG_DEBUG(a) a */
+#define PG_DEBUG(a)
+
+/* The buckets are exponential in 'width' */
+#define LAT_BUCKETS_MAX 32
+#define IP_NAME_SZ 32
+#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
+#define MPLS_STACK_BOTTOM __constant_htonl(0x00000100)
+
+/* Device flag bits */
+#define F_IPSRC_RND (1<<0) /* IP-Src Random */
+#define F_IPDST_RND (1<<1) /* IP-Dst Random */
+#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
+#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
+#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
+#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
+#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
+#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
+#define F_MPLS_RND (1<<8) /* Random MPLS labels */
+
+/* Thread control flag bits */
+#define T_TERMINATE (1<<0)
+#define T_STOP (1<<1) /* Stop run */
+#define T_RUN (1<<2) /* Start run */
+#define T_REMDEVALL (1<<3) /* Remove all devs */
+#define T_REMDEV (1<<4) /* Remove one dev */
+
+/* If lock -- can be removed after some work */
+#define if_lock(t) spin_lock(&(t->if_lock));
+#define if_unlock(t) spin_unlock(&(t->if_lock));
+/* Used to help with determining the pkts on receive */
+#define PKTGEN_MAGIC 0xbe9be955
+#define PG_PROC_DIR "pktgen"
+#define PGCTRL "pgctrl"
+static struct proc_dir_entry *pg_proc_dir = NULL;
-#define VERSION "pktgen version 1.32"
-static char version[] __initdata =
- "pktgen.c: v1.3: Packet Generator for packet performance testing.\n";
+#define MAX_CFLOWS 65536
-/* Used to help with determining the pkts on receive */
+struct flow_state {
+ __u32 cur_daddr;
+ int count;
+};
-#define PKTGEN_MAGIC 0xbe9be955
+struct pktgen_dev {
+ /*
+ * Try to keep frequent/infrequent used vars. separated.
+ */
+
+ char ifname[IFNAMSIZ];
+ char result[512];
+
+ struct pktgen_thread *pg_thread; /* the owner */
+ struct list_head list; /* Used for chaining in the thread's run-queue */
-/* Keep information per interface */
-struct pktgen_info {
- /* Parameters */
+ int running; /* if this changes to false, the test will stop */
/* If min != max, then we will either do a linear iteration, or
* we will do a random selection from within the range.
*/
- __u32 flags;
-
-#define F_IPSRC_RND (1<<0) /* IP-Src Random */
-#define F_IPDST_RND (1<<1) /* IP-Dst Random */
-#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
-#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
-#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
-#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
-#define F_SET_SRCMAC (1<<6) /* Specify-Src-Mac
- (default is to use Interface's MAC Addr) */
-#define F_SET_SRCIP (1<<7) /* Specify-Src-IP
- (default is to use Interface's IP Addr) */
-
-
- int pkt_size; /* = ETH_ZLEN; */
+ __u32 flags;
+ int removal_mark; /* non-zero => the device is marked for
+ * removal by worker thread */
+
+ int min_pkt_size; /* = ETH_ZLEN; */
+ int max_pkt_size; /* = ETH_ZLEN; */
int nfrags;
- __u32 ipg; /* Default Interpacket gap in nsec */
- __u64 count; /* Default No packets to send */
- __u64 sofar; /* How many pkts we've sent so far */
- __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */
- struct timeval started_at;
- struct timeval stopped_at;
- __u64 idle_acc;
+ __u32 delay_us; /* Default delay */
+ __u32 delay_ns;
+ __u64 count; /* Default No packets to send */
+ __u64 sofar; /* How many pkts we've sent so far */
+ __u64 tx_bytes; /* How many bytes we've transmitted */
+ __u64 errors; /* Errors when trying to transmit, pkts will be re-sent */
+
+ /* runtime counters relating to clone_skb */
+ __u64 next_tx_us; /* timestamp of when to tx next */
+ __u32 next_tx_ns;
+
+ __u64 allocated_skbs;
+ __u32 clone_count;
+ int last_ok; /* Was last skb sent?
+ * Or a failed transmit of some sort? This will keep
+ * sequence numbers in order, for example.
+ */
+ __u64 started_at; /* micro-seconds */
+ __u64 stopped_at; /* micro-seconds */
+ __u64 idle_acc; /* micro-seconds */
__u32 seq_num;
-
- int clone_skb; /* Use multiple SKBs during packet gen. If this number
- * is greater than 1, then that many coppies of the same
- * packet will be sent before a new packet is allocated.
- * For instance, if you want to send 1024 identical packets
- * before creating a new packet, set clone_skb to 1024.
- */
- int busy;
- int do_run_run; /* if this changes to false, the test will stop */
-
- char outdev[32];
- char dst_min[32];
- char dst_max[32];
- char src_min[32];
- char src_max[32];
+
+ int clone_skb; /* Use multiple SKBs during packet gen. If this number
+ * is greater than 1, then that many copies of the same
+ * packet will be sent before a new packet is allocated.
+ * For instance, if you want to send 1024 identical packets
+ * before creating a new packet, set clone_skb to 1024.
+ */
+
+ char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
+ char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
+ char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
+ char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
+
+ struct in6_addr in6_saddr;
+ struct in6_addr in6_daddr;
+ struct in6_addr cur_in6_daddr;
+ struct in6_addr cur_in6_saddr;
+ /* For ranges */
+ struct in6_addr min_in6_daddr;
+ struct in6_addr max_in6_daddr;
+ struct in6_addr min_in6_saddr;
+ struct in6_addr max_in6_saddr;
/* If we're doing ranges, random or incremental, then this
* defines the min/max for those ranges.
*/
- __u32 saddr_min; /* inclusive, source IP address */
- __u32 saddr_max; /* exclusive, source IP address */
- __u32 daddr_min; /* inclusive, dest IP address */
- __u32 daddr_max; /* exclusive, dest IP address */
-
- __u16 udp_src_min; /* inclusive, source UDP port */
- __u16 udp_src_max; /* exclusive, source UDP port */
- __u16 udp_dst_min; /* inclusive, dest UDP port */
- __u16 udp_dst_max; /* exclusive, dest UDP port */
-
- __u32 src_mac_count; /* How many MACs to iterate through */
- __u32 dst_mac_count; /* How many MACs to iterate through */
-
- unsigned char dst_mac[6];
- unsigned char src_mac[6];
-
+ __u32 saddr_min; /* inclusive, source IP address */
+ __u32 saddr_max; /* exclusive, source IP address */
+ __u32 daddr_min; /* inclusive, dest IP address */
+ __u32 daddr_max; /* exclusive, dest IP address */
+
+ __u16 udp_src_min; /* inclusive, source UDP port */
+ __u16 udp_src_max; /* exclusive, source UDP port */
+ __u16 udp_dst_min; /* inclusive, dest UDP port */
+ __u16 udp_dst_max; /* exclusive, dest UDP port */
+
+ /* MPLS */
+ unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
+ __be32 labels[MAX_MPLS_LABELS];
+
+ __u32 src_mac_count; /* How many MACs to iterate through */
+ __u32 dst_mac_count; /* How many MACs to iterate through */
+
+ unsigned char dst_mac[ETH_ALEN];
+ unsigned char src_mac[ETH_ALEN];
+
__u32 cur_dst_mac_offset;
__u32 cur_src_mac_offset;
__u32 cur_saddr;
__u32 cur_daddr;
__u16 cur_udp_dst;
__u16 cur_udp_src;
-
+ __u32 cur_pkt_size;
+
__u8 hh[14];
- /* = {
- 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
-
+ /* = {
+ 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
+
We fill in SRC address later
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00
};
- */
- __u16 pad; /* pad out the hh struct to an even 16 bytes */
- char result[512];
-
- /* proc file names */
- char fname[80];
- char busy_fname[80];
-
- struct proc_dir_entry *proc_ent;
- struct proc_dir_entry *busy_proc_ent;
+ */
+ __u16 pad; /* pad out the hh struct to an even 16 bytes */
+
+ struct sk_buff *skb; /* skb we are to transmit next, mainly used for when we
+ * are transmitting the same one multiple times
+ */
+ struct net_device *odev; /* The out-going device. Note that the device should
+ * have it's pg_info pointer pointing back to this
+ * device. This will be set when the user specifies
+ * the out-going device name (not when the inject is
+ * started as it used to do.)
+ */
+ struct flow_state *flows;
+ unsigned cflows; /* Concurrent flows (config) */
+ unsigned lflow; /* Flow length (config) */
+ unsigned nflows; /* accumulated flows (stats) */
};
struct pktgen_hdr {
__u32 tv_usec;
};
-static int cpu_speed;
-static int debug;
+struct pktgen_thread {
+ spinlock_t if_lock;
+ struct list_head if_list; /* All device here */
+ struct list_head th_list;
+ int removed;
+ char name[32];
+ char result[512];
+ u32 max_before_softirq; /* We'll call do_softirq to prevent starvation. */
-/* Module parameters, defaults. */
-static int count_d = 100000;
-static int ipg_d;
-static int clone_skb_d;
+ /* Field for thread to receive "posted" events terminate, stop ifs etc. */
+
+ u32 control;
+ int pid;
+ int cpu;
+
+ wait_queue_head_t queue;
+};
+
+#define REMOVE 1
+#define FIND 0
+
+/* This code works around the fact that do_div cannot handle two 64-bit
+ numbers, and regular 64-bit division doesn't work on x86 kernels.
+ --Ben
+*/
+#define PG_DIV 0
-#define MAX_PKTGEN 8
-static struct pktgen_info pginfos[MAX_PKTGEN];
+/* This was emailed to LMKL by: Chris Caputo <ccaputo@alt.net>
+ * Function copied/adapted/optimized from:
+ *
+ * nemesis.sourceforge.net/browse/lib/static/intmath/ix86/intmath.c.html
+ *
+ * Copyright 1994, University of Cambridge Computer Laboratory
+ * All Rights Reserved.
+ *
+ */
+static inline s64 divremdi3(s64 x, s64 y, int type)
+{
+ u64 a = (x < 0) ? -x : x;
+ u64 b = (y < 0) ? -y : y;
+ u64 res = 0, d = 1;
+
+ if (b > 0) {
+ while (b < a) {
+ b <<= 1;
+ d <<= 1;
+ }
+ }
+
+ do {
+ if (a >= b) {
+ a -= b;
+ res += d;
+ }
+ b >>= 1;
+ d >>= 1;
+ }
+ while (d);
+
+ if (PG_DIV == type) {
+ return (((x ^ y) & (1ll << 63)) == 0) ? res : -(s64) res;
+ } else {
+ return ((x & (1ll << 63)) == 0) ? a : -(s64) a;
+ }
+}
+/* End of hacks to deal with 64-bit math on x86 */
-/** Convert to miliseconds */
-static inline __u64 tv_to_ms(const struct timeval* tv) {
+/** Convert to milliseconds */
+static inline __u64 tv_to_ms(const struct timeval *tv)
+{
__u64 ms = tv->tv_usec / 1000;
- ms += (__u64)tv->tv_sec * (__u64)1000;
+ ms += (__u64) tv->tv_sec * (__u64) 1000;
return ms;
}
-static inline __u64 getCurMs(void) {
+/** Convert to micro-seconds */
+static inline __u64 tv_to_us(const struct timeval *tv)
+{
+ __u64 us = tv->tv_usec;
+ us += (__u64) tv->tv_sec * (__u64) 1000000;
+ return us;
+}
+
+static inline __u64 pg_div(__u64 n, __u32 base)
+{
+ __u64 tmp = n;
+ do_div(tmp, base);
+ /* printk("pktgen: pg_div, n: %llu base: %d rv: %llu\n",
+ n, base, tmp); */
+ return tmp;
+}
+
+static inline __u64 pg_div64(__u64 n, __u64 base)
+{
+ __u64 tmp = n;
+/*
+ * How do we know if the architecture we are running on
+ * supports division with 64 bit base?
+ *
+ */
+#if defined(__sparc_v9__) || defined(__powerpc64__) || defined(__alpha__) || defined(__x86_64__) || defined(__ia64__)
+
+ do_div(tmp, base);
+#else
+ tmp = divremdi3(n, base, PG_DIV);
+#endif
+ return tmp;
+}
+
+static inline u32 pktgen_random(void)
+{
+#if 0
+ __u32 n;
+ get_random_bytes(&n, 4);
+ return n;
+#else
+ return net_random();
+#endif
+}
+
+static inline __u64 getCurMs(void)
+{
struct timeval tv;
do_gettimeofday(&tv);
return tv_to_ms(&tv);
}
-#define PG_PROC_DIR "pktgen"
-static struct proc_dir_entry *proc_dir;
+static inline __u64 getCurUs(void)
+{
+ struct timeval tv;
+ do_gettimeofday(&tv);
+ return tv_to_us(&tv);
+}
-static struct net_device *setup_inject(struct pktgen_info* info)
+static inline __u64 tv_diff(const struct timeval *a, const struct timeval *b)
{
- struct net_device *odev;
+ return tv_to_us(a) - tv_to_us(b);
+}
- odev = dev_get_by_name(info->outdev);
- if (!odev) {
- sprintf(info->result, "No such netdevice: \"%s\"", info->outdev);
- goto out;
- }
+/* old include end */
- if (odev->type != ARPHRD_ETHER) {
- sprintf(info->result, "Not ethernet device: \"%s\"", info->outdev);
- goto out_put;
- }
+static char version[] __initdata = VERSION;
- if (!netif_running(odev)) {
- sprintf(info->result, "Device is down: \"%s\"", info->outdev);
- goto out_put;
- }
+static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
+static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
+static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
+ const char *ifname);
+static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
+static void pktgen_run_all_threads(void);
+static void pktgen_stop_all_threads_ifs(void);
+static int pktgen_stop_device(struct pktgen_dev *pkt_dev);
+static void pktgen_stop(struct pktgen_thread *t);
+static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
+static int pktgen_mark_device(const char *ifname);
+static unsigned int scan_ip6(const char *s, char ip[16]);
+static unsigned int fmt_ip6(char *s, const char ip[16]);
- /* Default to the interface's mac if not explicitly set. */
- if (!(info->flags & F_SET_SRCMAC)) {
- memcpy(&(info->hh[6]), odev->dev_addr, 6);
- }
- else {
- memcpy(&(info->hh[6]), info->src_mac, 6);
- }
+/* Module parameters, defaults. */
+static int pg_count_d = 1000; /* 1000 pkts by default */
+static int pg_delay_d;
+static int pg_clone_skb_d;
+static int debug;
- /* Set up Dest MAC */
- memcpy(&(info->hh[0]), info->dst_mac, 6);
-
- info->saddr_min = 0;
- info->saddr_max = 0;
- if (strlen(info->src_min) == 0) {
- struct in_device *in_dev = in_dev_get(odev);
- if (in_dev) {
- if (in_dev->ifa_list) {
- info->saddr_min = in_dev->ifa_list->ifa_address;
- info->saddr_max = info->saddr_min;
- }
- in_dev_put(in_dev);
- }
- }
- else {
- info->saddr_min = in_aton(info->src_min);
- info->saddr_max = in_aton(info->src_max);
- }
+static DEFINE_MUTEX(pktgen_thread_lock);
+static LIST_HEAD(pktgen_threads);
- info->daddr_min = in_aton(info->dst_min);
- info->daddr_max = in_aton(info->dst_max);
+static struct notifier_block pktgen_notifier_block = {
+ .notifier_call = pktgen_device_event,
+};
- /* Initialize current values. */
- info->cur_dst_mac_offset = 0;
- info->cur_src_mac_offset = 0;
- info->cur_saddr = info->saddr_min;
- info->cur_daddr = info->daddr_min;
- info->cur_udp_dst = info->udp_dst_min;
- info->cur_udp_src = info->udp_src_min;
-
- return odev;
+/*
+ * /proc handling functions
+ *
+ */
-out_put:
- dev_put(odev);
-out:
- return NULL;
+static int pgctrl_show(struct seq_file *seq, void *v)
+{
+ seq_puts(seq, VERSION);
+ return 0;
}
-static void nanospin(int ipg, struct pktgen_info* info)
+static ssize_t pgctrl_write(struct file *file, const char __user * buf,
+ size_t count, loff_t * ppos)
{
- u32 idle_start, idle;
+ int err = 0;
+ char data[128];
- idle_start = cycles();
+ if (!capable(CAP_NET_ADMIN)) {
+ err = -EPERM;
+ goto out;
+ }
- for (;;) {
- barrier();
- idle = cycles() - idle_start;
- if (idle * 1000 >= ipg * cpu_speed)
- break;
+ if (count > sizeof(data))
+ count = sizeof(data);
+
+ if (copy_from_user(data, buf, count)) {
+ err = -EFAULT;
+ goto out;
}
- info->idle_acc += idle;
+ data[count - 1] = 0; /* Make string */
+
+ if (!strcmp(data, "stop"))
+ pktgen_stop_all_threads_ifs();
+
+ else if (!strcmp(data, "start"))
+ pktgen_run_all_threads();
+
+ else
+ printk("pktgen: Unknown command: %s\n", data);
+
+ err = count;
+
+out:
+ return err;
}
-static int calc_mhz(void)
+static int pgctrl_open(struct inode *inode, struct file *file)
{
- struct timeval start, stop;
- u32 start_s, elapsed;
-
- do_gettimeofday(&start);
- start_s = cycles();
- do {
- barrier();
- elapsed = cycles() - start_s;
- if (elapsed == 0)
- return 0;
- } while (elapsed < 1000 * 50000);
- do_gettimeofday(&stop);
- return elapsed/(stop.tv_usec-start.tv_usec+1000000*(stop.tv_sec-start.tv_sec));
+ return single_open(file, pgctrl_show, PDE(inode)->data);
}
-static void cycles_calibrate(void)
+static struct file_operations pktgen_fops = {
+ .owner = THIS_MODULE,
+ .open = pgctrl_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = pgctrl_write,
+ .release = single_release,
+};
+
+static int pktgen_if_show(struct seq_file *seq, void *v)
{
int i;
-
- for (i = 0; i < 3; i++) {
- int res = calc_mhz();
- if (res > cpu_speed)
- cpu_speed = res;
+ struct pktgen_dev *pkt_dev = seq->private;
+ __u64 sa;
+ __u64 stopped;
+ __u64 now = getCurUs();
+
+ seq_printf(seq,
+ "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
+ (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
+ pkt_dev->max_pkt_size);
+
+ seq_printf(seq,
+ " frags: %d delay: %u clone_skb: %d ifname: %s\n",
+ pkt_dev->nfrags,
+ 1000 * pkt_dev->delay_us + pkt_dev->delay_ns,
+ pkt_dev->clone_skb, pkt_dev->ifname);
+
+ seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
+ pkt_dev->lflow);
+
+ if (pkt_dev->flags & F_IPV6) {
+ char b1[128], b2[128], b3[128];
+ fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
+ fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
+ fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
+ seq_printf(seq,
+ " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
+ b2, b3);
+
+ fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
+ fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
+ fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
+ seq_printf(seq,
+ " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
+ b2, b3);
+
+ } else
+ seq_printf(seq,
+ " dst_min: %s dst_max: %s\n src_min: %s src_max: %s\n",
+ pkt_dev->dst_min, pkt_dev->dst_max, pkt_dev->src_min,
+ pkt_dev->src_max);
+
+ seq_puts(seq, " src_mac: ");
+
+ if (is_zero_ether_addr(pkt_dev->src_mac))
+ for (i = 0; i < 6; i++)
+ seq_printf(seq, "%02X%s", pkt_dev->odev->dev_addr[i],
+ i == 5 ? " " : ":");
+ else
+ for (i = 0; i < 6; i++)
+ seq_printf(seq, "%02X%s", pkt_dev->src_mac[i],
+ i == 5 ? " " : ":");
+
+ seq_printf(seq, "dst_mac: ");
+ for (i = 0; i < 6; i++)
+ seq_printf(seq, "%02X%s", pkt_dev->dst_mac[i],
+ i == 5 ? "\n" : ":");
+
+ seq_printf(seq,
+ " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
+ pkt_dev->udp_src_min, pkt_dev->udp_src_max,
+ pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
+
+ seq_printf(seq,
+ " src_mac_count: %d dst_mac_count: %d\n",
+ pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
+
+ if (pkt_dev->nr_labels) {
+ unsigned i;
+ seq_printf(seq, " mpls: ");
+ for(i = 0; i < pkt_dev->nr_labels; i++)
+ seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
+ i == pkt_dev->nr_labels-1 ? "\n" : ", ");
}
-}
+ seq_printf(seq, " Flags: ");
-/* Increment/randomize headers according to flags and current values
- * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
- */
-static void mod_cur_headers(struct pktgen_info* info) {
- __u32 imn;
- __u32 imx;
-
- /* Deal with source MAC */
- if (info->src_mac_count > 1) {
- __u32 mc;
- __u32 tmp;
- if (info->flags & F_MACSRC_RND) {
- mc = net_random() % (info->src_mac_count);
- }
- else {
- mc = info->cur_src_mac_offset++;
- if (info->cur_src_mac_offset > info->src_mac_count) {
- info->cur_src_mac_offset = 0;
- }
- }
+ if (pkt_dev->flags & F_IPV6)
+ seq_printf(seq, "IPV6 ");
- tmp = info->src_mac[5] + (mc & 0xFF);
- info->hh[11] = tmp;
- tmp = (info->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
- info->hh[10] = tmp;
- tmp = (info->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
- info->hh[9] = tmp;
- tmp = (info->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
- info->hh[8] = tmp;
- tmp = (info->src_mac[1] + (tmp >> 8));
- info->hh[7] = tmp;
- }
+ if (pkt_dev->flags & F_IPSRC_RND)
+ seq_printf(seq, "IPSRC_RND ");
- /* Deal with Destination MAC */
- if (info->dst_mac_count > 1) {
- __u32 mc;
- __u32 tmp;
- if (info->flags & F_MACDST_RND) {
- mc = net_random() % (info->dst_mac_count);
- }
- else {
- mc = info->cur_dst_mac_offset++;
- if (info->cur_dst_mac_offset > info->dst_mac_count) {
- info->cur_dst_mac_offset = 0;
- }
- }
+ if (pkt_dev->flags & F_IPDST_RND)
+ seq_printf(seq, "IPDST_RND ");
- tmp = info->dst_mac[5] + (mc & 0xFF);
- info->hh[5] = tmp;
- tmp = (info->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
- info->hh[4] = tmp;
- tmp = (info->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
- info->hh[3] = tmp;
- tmp = (info->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
- info->hh[2] = tmp;
- tmp = (info->dst_mac[1] + (tmp >> 8));
- info->hh[1] = tmp;
- }
+ if (pkt_dev->flags & F_TXSIZE_RND)
+ seq_printf(seq, "TXSIZE_RND ");
- if (info->udp_src_min < info->udp_src_max) {
- if (info->flags & F_UDPSRC_RND) {
- info->cur_udp_src = ((net_random() % (info->udp_src_max - info->udp_src_min))
- + info->udp_src_min);
- }
- else {
- info->cur_udp_src++;
- if (info->cur_udp_src >= info->udp_src_max) {
- info->cur_udp_src = info->udp_src_min;
- }
- }
- }
+ if (pkt_dev->flags & F_UDPSRC_RND)
+ seq_printf(seq, "UDPSRC_RND ");
- if (info->udp_dst_min < info->udp_dst_max) {
- if (info->flags & F_UDPDST_RND) {
- info->cur_udp_dst = ((net_random() % (info->udp_dst_max - info->udp_dst_min))
- + info->udp_dst_min);
- }
- else {
- info->cur_udp_dst++;
- if (info->cur_udp_dst >= info->udp_dst_max) {
- info->cur_udp_dst = info->udp_dst_min;
- }
- }
- }
+ if (pkt_dev->flags & F_UDPDST_RND)
+ seq_printf(seq, "UDPDST_RND ");
- if ((imn = ntohl(info->saddr_min)) < (imx = ntohl(info->saddr_max))) {
- __u32 t;
- if (info->flags & F_IPSRC_RND) {
- t = ((net_random() % (imx - imn)) + imn);
- }
- else {
- t = ntohl(info->cur_saddr);
- t++;
- if (t >= imx) {
- t = imn;
- }
- }
- info->cur_saddr = htonl(t);
- }
+ if (pkt_dev->flags & F_MPLS_RND)
+ seq_printf(seq, "MPLS_RND ");
- if ((imn = ntohl(info->daddr_min)) < (imx = ntohl(info->daddr_max))) {
- __u32 t;
- if (info->flags & F_IPDST_RND) {
- t = ((net_random() % (imx - imn)) + imn);
- }
- else {
- t = ntohl(info->cur_daddr);
- t++;
- if (t >= imx) {
- t = imn;
- }
- }
- info->cur_daddr = htonl(t);
- }
-}/* mod_cur_headers */
+ if (pkt_dev->flags & F_MACSRC_RND)
+ seq_printf(seq, "MACSRC_RND ");
+ if (pkt_dev->flags & F_MACDST_RND)
+ seq_printf(seq, "MACDST_RND ");
-static struct sk_buff *fill_packet(struct net_device *odev, struct pktgen_info* info)
-{
- struct sk_buff *skb = NULL;
- __u8 *eth;
- struct udphdr *udph;
- int datalen, iplen;
- struct iphdr *iph;
- struct pktgen_hdr *pgh = NULL;
-
- skb = alloc_skb(info->pkt_size + 64 + 16, GFP_ATOMIC);
- if (!skb) {
- sprintf(info->result, "No memory");
- return NULL;
- }
+ seq_puts(seq, "\n");
- skb_reserve(skb, 16);
+ sa = pkt_dev->started_at;
+ stopped = pkt_dev->stopped_at;
+ if (pkt_dev->running)
+ stopped = now; /* not really stopped, more like last-running-at */
- /* Reserve for ethernet and IP header */
- eth = (__u8 *) skb_push(skb, 14);
- iph = (struct iphdr *)skb_put(skb, sizeof(struct iphdr));
- udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
+ seq_printf(seq,
+ "Current:\n pkts-sofar: %llu errors: %llu\n started: %lluus stopped: %lluus idle: %lluus\n",
+ (unsigned long long)pkt_dev->sofar,
+ (unsigned long long)pkt_dev->errors, (unsigned long long)sa,
+ (unsigned long long)stopped,
+ (unsigned long long)pkt_dev->idle_acc);
- /* Update any of the values, used when we're incrementing various
- * fields.
- */
- mod_cur_headers(info);
+ seq_printf(seq,
+ " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
+ pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
+ pkt_dev->cur_src_mac_offset);
- memcpy(eth, info->hh, 14);
-
- datalen = info->pkt_size - 14 - 20 - 8; /* Eth + IPh + UDPh */
- if (datalen < sizeof(struct pktgen_hdr)) {
- datalen = sizeof(struct pktgen_hdr);
- }
-
- udph->source = htons(info->cur_udp_src);
- udph->dest = htons(info->cur_udp_dst);
- udph->len = htons(datalen + 8); /* DATA + udphdr */
- udph->check = 0; /* No checksum */
+ if (pkt_dev->flags & F_IPV6) {
+ char b1[128], b2[128];
+ fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
+ fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
+ seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
+ } else
+ seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
+ pkt_dev->cur_saddr, pkt_dev->cur_daddr);
- iph->ihl = 5;
- iph->version = 4;
- iph->ttl = 3;
- iph->tos = 0;
- iph->protocol = IPPROTO_UDP; /* UDP */
- iph->saddr = info->cur_saddr;
- iph->daddr = info->cur_daddr;
- iph->frag_off = 0;
- iplen = 20 + 8 + datalen;
- iph->tot_len = htons(iplen);
- iph->check = 0;
- iph->check = ip_fast_csum((void *) iph, iph->ihl);
- skb->protocol = __constant_htons(ETH_P_IP);
- skb->mac.raw = ((u8 *)iph) - 14;
- skb->dev = odev;
- skb->pkt_type = PACKET_HOST;
+ seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
+ pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
- if (info->nfrags <= 0) {
- pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
- } else {
- int frags = info->nfrags;
- int i;
+ seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
- /* TODO: Verify this is OK...it sure is ugly. --Ben */
- pgh = (struct pktgen_hdr*)(((char*)(udph)) + 8);
-
- if (frags > MAX_SKB_FRAGS)
- frags = MAX_SKB_FRAGS;
- if (datalen > frags*PAGE_SIZE) {
- skb_put(skb, datalen-frags*PAGE_SIZE);
- datalen = frags*PAGE_SIZE;
- }
+ if (pkt_dev->result[0])
+ seq_printf(seq, "Result: %s\n", pkt_dev->result);
+ else
+ seq_printf(seq, "Result: Idle\n");
- i = 0;
- while (datalen > 0) {
- struct page *page = alloc_pages(GFP_KERNEL, 0);
- skb_shinfo(skb)->frags[i].page = page;
- skb_shinfo(skb)->frags[i].page_offset = 0;
- skb_shinfo(skb)->frags[i].size =
- (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
- datalen -= skb_shinfo(skb)->frags[i].size;
- skb->len += skb_shinfo(skb)->frags[i].size;
- skb->data_len += skb_shinfo(skb)->frags[i].size;
- i++;
- skb_shinfo(skb)->nr_frags = i;
- }
-
- while (i < frags) {
- int rem;
-
- if (i == 0)
- break;
-
- rem = skb_shinfo(skb)->frags[i - 1].size / 2;
- if (rem == 0)
- break;
-
- skb_shinfo(skb)->frags[i - 1].size -= rem;
-
- skb_shinfo(skb)->frags[i] = skb_shinfo(skb)->frags[i - 1];
- get_page(skb_shinfo(skb)->frags[i].page);
- skb_shinfo(skb)->frags[i].page = skb_shinfo(skb)->frags[i - 1].page;
- skb_shinfo(skb)->frags[i].page_offset += skb_shinfo(skb)->frags[i - 1].size;
- skb_shinfo(skb)->frags[i].size = rem;
- i++;
- skb_shinfo(skb)->nr_frags = i;
- }
- }
-
- /* Stamp the time, and sequence number, convert them to network byte order */
- if (pgh) {
- struct timeval timestamp;
-
- pgh->pgh_magic = htonl(PKTGEN_MAGIC);
- pgh->seq_num = htonl(info->seq_num);
-
- do_gettimeofday(×tamp);
- pgh->tv_sec = htonl(timestamp.tv_sec);
- pgh->tv_usec = htonl(timestamp.tv_usec);
- }
-
- return skb;
+ return 0;
}
-static void inject(struct pktgen_info* info)
+static int hex32_arg(const char __user *user_buffer, __u32 *num)
{
- struct net_device *odev = NULL;
- struct sk_buff *skb = NULL;
- __u64 total = 0;
- __u64 idle = 0;
- __u64 lcount = 0;
- int nr_frags = 0;
- int last_ok = 1; /* Was last skb sent?
- * Or a failed transmit of some sort? This will keep
- * sequence numbers in order, for example.
- */
- __u64 fp = 0;
- __u32 fp_tmp = 0;
-
- odev = setup_inject(info);
- if (!odev)
- return;
-
- info->do_run_run = 1; /* Cranke yeself! */
- info->idle_acc = 0;
- info->sofar = 0;
- lcount = info->count;
-
-
- /* Build our initial pkt and place it as a re-try pkt. */
- skb = fill_packet(odev, info);
- if (skb == NULL) goto out_reldev;
-
- do_gettimeofday(&(info->started_at));
-
- while(info->do_run_run) {
-
- /* Set a time-stamp, so build a new pkt each time */
-
- if (last_ok) {
- if (++fp_tmp >= info->clone_skb ) {
- kfree_skb(skb);
- skb = fill_packet(odev, info);
- if (skb == NULL) {
- goto out_reldev;
- }
- fp++;
- fp_tmp = 0; /* reset counter */
- }
- }
-
- nr_frags = skb_shinfo(skb)->nr_frags;
-
- spin_lock_bh(&odev->xmit_lock);
- if (!netif_queue_stopped(odev)) {
-
- atomic_inc(&skb->users);
-
- if (odev->hard_start_xmit(skb, odev)) {
-
- atomic_dec(&skb->users);
- if (net_ratelimit()) {
- printk(KERN_INFO "Hard xmit error\n");
- }
- info->errors++;
- last_ok = 0;
- }
- else {
- last_ok = 1;
- info->sofar++;
- info->seq_num++;
- }
- }
- else {
- /* Re-try it next time */
- last_ok = 0;
- }
-
-
- spin_unlock_bh(&odev->xmit_lock);
-
- if (info->ipg) {
- /* Try not to busy-spin if we have larger sleep times.
- * TODO: Investigate better ways to do this.
- */
- if (info->ipg < 10000) { /* 10 usecs or less */
- nanospin(info->ipg, info);
- }
- else if (info->ipg < 10000000) { /* 10ms or less */
- udelay(info->ipg / 1000);
- }
- else {
- mdelay(info->ipg / 1000000);
- }
- }
-
- if (signal_pending(current)) {
- break;
- }
-
- /* If lcount is zero, then run forever */
- if ((lcount != 0) && (--lcount == 0)) {
- if (atomic_read(&skb->users) != 1) {
- u32 idle_start, idle;
+ int i = 0;
+ *num = 0;
- idle_start = cycles();
- while (atomic_read(&skb->users) != 1) {
- if (signal_pending(current)) {
- break;
- }
- schedule();
- }
- idle = cycles() - idle_start;
- info->idle_acc += idle;
- }
+ for(; i < 8; i++) {
+ char c;
+ *num <<= 4;
+ if (get_user(c, &user_buffer[i]))
+ return -EFAULT;
+ if ((c >= '0') && (c <= '9'))
+ *num |= c - '0';
+ else if ((c >= 'a') && (c <= 'f'))
+ *num |= c - 'a' + 10;
+ else if ((c >= 'A') && (c <= 'F'))
+ *num |= c - 'A' + 10;
+ else
break;
- }
-
- if (netif_queue_stopped(odev) || need_resched()) {
- u32 idle_start, idle;
-
- idle_start = cycles();
- do {
- if (signal_pending(current)) {
- info->do_run_run = 0;
- break;
- }
- if (!netif_running(odev)) {
- info->do_run_run = 0;
- break;
- }
- if (need_resched())
- schedule();
- else
- do_softirq();
- } while (netif_queue_stopped(odev));
- idle = cycles() - idle_start;
- info->idle_acc += idle;
- }
- }/* while we should be running */
-
- do_gettimeofday(&(info->stopped_at));
-
- total = (info->stopped_at.tv_sec - info->started_at.tv_sec) * 1000000 +
- info->stopped_at.tv_usec - info->started_at.tv_usec;
-
- idle = (__u32)(info->idle_acc)/(__u32)(cpu_speed);
-
- {
- char *p = info->result;
- __u64 bps, pps = 0;
-
- if (total > 1000)
- pps = (__u32)(info->sofar * 1000) / ((__u32)(total) / 1000);
- else if(total > 100)
- pps = (__u32)(info->sofar * 10000) / ((__u32)(total) / 100);
- else if(total > 10)
- pps = (__u32)(info->sofar * 100000) / ((__u32)(total) / 10);
- else if(total > 1)
- pps = (__u32)(info->sofar * 1000000) / (__u32)total;
-
- bps = pps * 8 * (info->pkt_size + 4); /* take 32bit ethernet CRC into account */
- p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags) %llupps %lluMb/sec (%llubps) errors: %llu",
- (unsigned long long) total,
- (unsigned long long) (total - idle),
- (unsigned long long) idle,
- (unsigned long long) info->sofar,
- skb->len + 4, /* Add 4 to account for the ethernet checksum */
- nr_frags,
- (unsigned long long) pps,
- (unsigned long long) (bps / (u64) 1024 / (u64) 1024),
- (unsigned long long) bps,
- (unsigned long long) info->errors
- );
- }
-
- kfree_skb(skb);
-
-out_reldev:
- if (odev) {
- dev_put(odev);
- odev = NULL;
}
-
- return;
-
-}
-
-/* proc/net/pktgen/pg */
-
-static int proc_busy_read(char *buf , char **start, off_t offset,
- int len, int *eof, void *data)
-{
- char *p;
- int idx = (int)(long)(data);
- struct pktgen_info* info = NULL;
-
- if ((idx < 0) || (idx >= MAX_PKTGEN)) {
- printk("ERROR: idx: %i is out of range in proc_write\n", idx);
- return -EINVAL;
- }
- info = &(pginfos[idx]);
-
- p = buf;
- p += sprintf(p, "%d\n", info->busy);
- *eof = 1;
-
- return p-buf;
-}
-
-static int proc_read(char *buf , char **start, off_t offset,
- int len, int *eof, void *data)
-{
- char *p;
- int i;
- int idx = (int)(long)(data);
- struct pktgen_info* info = NULL;
- __u64 sa;
- __u64 stopped;
- __u64 now = getCurMs();
-
- if ((idx < 0) || (idx >= MAX_PKTGEN)) {
- printk("ERROR: idx: %i is out of range in proc_write\n", idx);
- return -EINVAL;
- }
- info = &(pginfos[idx]);
-
- p = buf;
- p += sprintf(p, "%s\n", VERSION); /* Help with parsing compatibility */
- p += sprintf(p, "Params: count %llu pkt_size: %u frags: %d ipg: %u clone_skb: %d odev \"%s\"\n",
- (unsigned long long) info->count,
- info->pkt_size, info->nfrags, info->ipg,
- info->clone_skb, info->outdev);
- p += sprintf(p, " dst_min: %s dst_max: %s src_min: %s src_max: %s\n",
- info->dst_min, info->dst_max, info->src_min, info->src_max);
- p += sprintf(p, " src_mac: ");
- for (i = 0; i < 6; i++) {
- p += sprintf(p, "%02X%s", info->src_mac[i], i == 5 ? " " : ":");
- }
- p += sprintf(p, "dst_mac: ");
- for (i = 0; i < 6; i++) {
- p += sprintf(p, "%02X%s", info->dst_mac[i], i == 5 ? "\n" : ":");
- }
- p += sprintf(p, " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
- info->udp_src_min, info->udp_src_max, info->udp_dst_min,
- info->udp_dst_max);
- p += sprintf(p, " src_mac_count: %d dst_mac_count: %d\n Flags: ",
- info->src_mac_count, info->dst_mac_count);
- if (info->flags & F_IPSRC_RND) {
- p += sprintf(p, "IPSRC_RND ");
- }
- if (info->flags & F_IPDST_RND) {
- p += sprintf(p, "IPDST_RND ");
- }
- if (info->flags & F_UDPSRC_RND) {
- p += sprintf(p, "UDPSRC_RND ");
- }
- if (info->flags & F_UDPDST_RND) {
- p += sprintf(p, "UDPDST_RND ");
- }
- if (info->flags & F_MACSRC_RND) {
- p += sprintf(p, "MACSRC_RND ");
- }
- if (info->flags & F_MACDST_RND) {
- p += sprintf(p, "MACDST_RND ");
- }
- p += sprintf(p, "\n");
-
- sa = tv_to_ms(&(info->started_at));
- stopped = tv_to_ms(&(info->stopped_at));
- if (info->do_run_run) {
- stopped = now; /* not really stopped, more like last-running-at */
- }
- p += sprintf(p, "Current:\n pkts-sofar: %llu errors: %llu\n started: %llums stopped: %llums now: %llums idle: %lluns\n",
- (unsigned long long) info->sofar,
- (unsigned long long) info->errors,
- (unsigned long long) sa,
- (unsigned long long) stopped,
- (unsigned long long) now,
- (unsigned long long) info->idle_acc);
- p += sprintf(p, " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
- info->seq_num, info->cur_dst_mac_offset, info->cur_src_mac_offset);
- p += sprintf(p, " cur_saddr: 0x%x cur_daddr: 0x%x cur_udp_dst: %d cur_udp_src: %d\n",
- info->cur_saddr, info->cur_daddr, info->cur_udp_dst, info->cur_udp_src);
-
- if (info->result[0])
- p += sprintf(p, "Result: %s\n", info->result);
- else
- p += sprintf(p, "Result: Idle\n");
- *eof = 1;
-
- return p - buf;
+ return i;
}
-static int count_trail_chars(const char __user *user_buffer, unsigned int maxlen)
+static int count_trail_chars(const char __user * user_buffer,
+ unsigned int maxlen)
{
int i;
for (i = 0; i < maxlen; i++) {
char c;
-
if (get_user(c, &user_buffer[i]))
return -EFAULT;
switch (c) {
return i;
}
-static unsigned long num_arg(const char __user *user_buffer, unsigned long maxlen,
- unsigned long *num)
+static unsigned long num_arg(const char __user * user_buffer,
+ unsigned long maxlen, unsigned long *num)
{
int i = 0;
-
*num = 0;
-
- for(; i < maxlen; i++) {
- char c;
+ for (; i < maxlen; i++) {
+ char c;
if (get_user(c, &user_buffer[i]))
return -EFAULT;
if ((c >= '0') && (c <= '9')) {
*num *= 10;
- *num += c -'0';
+ *num += c - '0';
} else
break;
}
return i;
}
-static int strn_len(const char __user *user_buffer, unsigned int maxlen)
+static int strn_len(const char __user * user_buffer, unsigned int maxlen)
{
int i = 0;
- for(; i < maxlen; i++) {
+ for (; i < maxlen; i++) {
char c;
-
if (get_user(c, &user_buffer[i]))
return -EFAULT;
switch (c) {
case '\t':
case ' ':
goto done_str;
+ break;
default:
break;
};
return i;
}
-static int proc_write(struct file *file, const char __user *user_buffer,
- unsigned long count, void *data)
+static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
+{
+ unsigned n = 0;
+ char c;
+ ssize_t i = 0;
+ int len;
+
+ pkt_dev->nr_labels = 0;
+ do {
+ __u32 tmp;
+ len = hex32_arg(&buffer[i], &tmp);
+ if (len <= 0)
+ return len;
+ pkt_dev->labels[n] = htonl(tmp);
+ if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
+ pkt_dev->flags |= F_MPLS_RND;
+ i += len;
+ if (get_user(c, &buffer[i]))
+ return -EFAULT;
+ i++;
+ n++;
+ if (n >= MAX_MPLS_LABELS)
+ return -E2BIG;
+ } while(c == ',');
+
+ pkt_dev->nr_labels = n;
+ return i;
+}
+
+static ssize_t pktgen_if_write(struct file *file,
+ const char __user * user_buffer, size_t count,
+ loff_t * offset)
{
+ struct seq_file *seq = (struct seq_file *)file->private_data;
+ struct pktgen_dev *pkt_dev = seq->private;
int i = 0, max, len;
char name[16], valstr[32];
unsigned long value = 0;
- int idx = (int)(long)(data);
- struct pktgen_info* info = NULL;
- char* result = NULL;
- int tmp;
-
- if ((idx < 0) || (idx >= MAX_PKTGEN)) {
- printk("ERROR: idx: %i is out of range in proc_write\n", idx);
- return -EINVAL;
- }
- info = &(pginfos[idx]);
- result = &(info->result[0]);
-
+ char *pg_result = NULL;
+ int tmp = 0;
+ char buf[128];
+
+ pg_result = &(pkt_dev->result[0]);
+
if (count < 1) {
- sprintf(result, "Wrong command format");
+ printk("pktgen: wrong command format\n");
return -EINVAL;
}
-
+
max = count - i;
tmp = count_trail_chars(&user_buffer[i], max);
- if (tmp < 0)
+ if (tmp < 0) {
+ printk("pktgen: illegal format\n");
return tmp;
+ }
i += tmp;
-
+
/* Read variable name */
len = strn_len(&user_buffer[i], sizeof(name) - 1);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
memset(name, 0, sizeof(name));
if (copy_from_user(name, &user_buffer[i], len))
return -EFAULT;
i += len;
-
- max = count -i;
+
+ max = count - i;
len = count_trail_chars(&user_buffer[i], max);
if (len < 0)
return len;
+
i += len;
- if (debug)
- printk("pg: %s,%lu\n", name, count);
+ if (debug) {
+ char tb[count + 1];
+ if (copy_from_user(tb, user_buffer, count))
+ return -EFAULT;
+ tb[count] = 0;
+ printk("pktgen: %s,%lu buffer -:%s:-\n", name,
+ (unsigned long)count, tb);
+ }
- if (!strcmp(name, "stop")) {
- if (info->do_run_run) {
- strcpy(result, "Stopping");
+ if (!strcmp(name, "min_pkt_size")) {
+ len = num_arg(&user_buffer[i], 10, &value);
+ if (len < 0) {
+ return len;
}
- else {
- strcpy(result, "Already stopped...\n");
+ i += len;
+ if (value < 14 + 20 + 8)
+ value = 14 + 20 + 8;
+ if (value != pkt_dev->min_pkt_size) {
+ pkt_dev->min_pkt_size = value;
+ pkt_dev->cur_pkt_size = value;
+ }
+ sprintf(pg_result, "OK: min_pkt_size=%u",
+ pkt_dev->min_pkt_size);
+ return count;
+ }
+
+ if (!strcmp(name, "max_pkt_size")) {
+ len = num_arg(&user_buffer[i], 10, &value);
+ if (len < 0) {
+ return len;
+ }
+ i += len;
+ if (value < 14 + 20 + 8)
+ value = 14 + 20 + 8;
+ if (value != pkt_dev->max_pkt_size) {
+ pkt_dev->max_pkt_size = value;
+ pkt_dev->cur_pkt_size = value;
}
- info->do_run_run = 0;
+ sprintf(pg_result, "OK: max_pkt_size=%u",
+ pkt_dev->max_pkt_size);
return count;
}
+ /* Shortcut for min = max */
+
if (!strcmp(name, "pkt_size")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
+ return len;
+ }
+ i += len;
+ if (value < 14 + 20 + 8)
+ value = 14 + 20 + 8;
+ if (value != pkt_dev->min_pkt_size) {
+ pkt_dev->min_pkt_size = value;
+ pkt_dev->max_pkt_size = value;
+ pkt_dev->cur_pkt_size = value;
+ }
+ sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
+ return count;
+ }
+
+ if (!strcmp(name, "debug")) {
+ len = num_arg(&user_buffer[i], 10, &value);
+ if (len < 0) {
return len;
+ }
i += len;
- if (value < 14+20+8)
- value = 14+20+8;
- info->pkt_size = value;
- sprintf(result, "OK: pkt_size=%u", info->pkt_size);
+ debug = value;
+ sprintf(pg_result, "OK: debug=%u", debug);
return count;
}
+
if (!strcmp(name, "frags")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->nfrags = value;
- sprintf(result, "OK: frags=%u", info->nfrags);
+ pkt_dev->nfrags = value;
+ sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
return count;
}
- if (!strcmp(name, "ipg")) {
+ if (!strcmp(name, "delay")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->ipg = value;
- sprintf(result, "OK: ipg=%u", info->ipg);
+ if (value == 0x7FFFFFFF) {
+ pkt_dev->delay_us = 0x7FFFFFFF;
+ pkt_dev->delay_ns = 0;
+ } else {
+ pkt_dev->delay_us = value / 1000;
+ pkt_dev->delay_ns = value % 1000;
+ }
+ sprintf(pg_result, "OK: delay=%u",
+ 1000 * pkt_dev->delay_us + pkt_dev->delay_ns);
return count;
}
- if (!strcmp(name, "udp_src_min")) {
+ if (!strcmp(name, "udp_src_min")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->udp_src_min = value;
- sprintf(result, "OK: udp_src_min=%u", info->udp_src_min);
+ if (value != pkt_dev->udp_src_min) {
+ pkt_dev->udp_src_min = value;
+ pkt_dev->cur_udp_src = value;
+ }
+ sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
return count;
}
- if (!strcmp(name, "udp_dst_min")) {
+ if (!strcmp(name, "udp_dst_min")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->udp_dst_min = value;
- sprintf(result, "OK: udp_dst_min=%u", info->udp_dst_min);
+ if (value != pkt_dev->udp_dst_min) {
+ pkt_dev->udp_dst_min = value;
+ pkt_dev->cur_udp_dst = value;
+ }
+ sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
return count;
}
- if (!strcmp(name, "udp_src_max")) {
+ if (!strcmp(name, "udp_src_max")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->udp_src_max = value;
- sprintf(result, "OK: udp_src_max=%u", info->udp_src_max);
+ if (value != pkt_dev->udp_src_max) {
+ pkt_dev->udp_src_max = value;
+ pkt_dev->cur_udp_src = value;
+ }
+ sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
return count;
}
- if (!strcmp(name, "udp_dst_max")) {
+ if (!strcmp(name, "udp_dst_max")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->udp_dst_max = value;
- sprintf(result, "OK: udp_dst_max=%u", info->udp_dst_max);
+ if (value != pkt_dev->udp_dst_max) {
+ pkt_dev->udp_dst_max = value;
+ pkt_dev->cur_udp_dst = value;
+ }
+ sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
return count;
}
if (!strcmp(name, "clone_skb")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->clone_skb = value;
-
- sprintf(result, "OK: clone_skb=%d", info->clone_skb);
+ pkt_dev->clone_skb = value;
+
+ sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
return count;
}
if (!strcmp(name, "count")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->count = value;
- sprintf(result, "OK: count=%llu", (unsigned long long) info->count);
+ pkt_dev->count = value;
+ sprintf(pg_result, "OK: count=%llu",
+ (unsigned long long)pkt_dev->count);
return count;
}
if (!strcmp(name, "src_mac_count")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
i += len;
- info->src_mac_count = value;
- sprintf(result, "OK: src_mac_count=%d", info->src_mac_count);
+ if (pkt_dev->src_mac_count != value) {
+ pkt_dev->src_mac_count = value;
+ pkt_dev->cur_src_mac_offset = 0;
+ }
+ sprintf(pg_result, "OK: src_mac_count=%d",
+ pkt_dev->src_mac_count);
return count;
}
if (!strcmp(name, "dst_mac_count")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0)
- return len;
- i += len;
- info->dst_mac_count = value;
- sprintf(result, "OK: dst_mac_count=%d", info->dst_mac_count);
- return count;
- }
- if (!strcmp(name, "odev")) {
- len = strn_len(&user_buffer[i], sizeof(info->outdev) - 1);
- if (len < 0)
+ if (len < 0) {
return len;
- memset(info->outdev, 0, sizeof(info->outdev));
- if (copy_from_user(info->outdev, &user_buffer[i], len))
- return -EFAULT;
+ }
i += len;
- sprintf(result, "OK: odev=%s", info->outdev);
+ if (pkt_dev->dst_mac_count != value) {
+ pkt_dev->dst_mac_count = value;
+ pkt_dev->cur_dst_mac_offset = 0;
+ }
+ sprintf(pg_result, "OK: dst_mac_count=%d",
+ pkt_dev->dst_mac_count);
return count;
}
if (!strcmp(name, "flag")) {
char f[32];
+ memset(f, 0, 32);
len = strn_len(&user_buffer[i], sizeof(f) - 1);
- if (len < 0)
+ if (len < 0) {
return len;
- memset(f, 0, 32);
+ }
if (copy_from_user(f, &user_buffer[i], len))
return -EFAULT;
i += len;
- if (strcmp(f, "IPSRC_RND") == 0) {
- info->flags |= F_IPSRC_RND;
- }
- else if (strcmp(f, "!IPSRC_RND") == 0) {
- info->flags &= ~F_IPSRC_RND;
- }
- else if (strcmp(f, "IPDST_RND") == 0) {
- info->flags |= F_IPDST_RND;
- }
- else if (strcmp(f, "!IPDST_RND") == 0) {
- info->flags &= ~F_IPDST_RND;
- }
- else if (strcmp(f, "UDPSRC_RND") == 0) {
- info->flags |= F_UDPSRC_RND;
- }
- else if (strcmp(f, "!UDPSRC_RND") == 0) {
- info->flags &= ~F_UDPSRC_RND;
- }
- else if (strcmp(f, "UDPDST_RND") == 0) {
- info->flags |= F_UDPDST_RND;
- }
- else if (strcmp(f, "!UDPDST_RND") == 0) {
- info->flags &= ~F_UDPDST_RND;
- }
- else if (strcmp(f, "MACSRC_RND") == 0) {
- info->flags |= F_MACSRC_RND;
- }
- else if (strcmp(f, "!MACSRC_RND") == 0) {
- info->flags &= ~F_MACSRC_RND;
- }
- else if (strcmp(f, "MACDST_RND") == 0) {
- info->flags |= F_MACDST_RND;
- }
- else if (strcmp(f, "!MACDST_RND") == 0) {
- info->flags &= ~F_MACDST_RND;
- }
+ if (strcmp(f, "IPSRC_RND") == 0)
+ pkt_dev->flags |= F_IPSRC_RND;
+
+ else if (strcmp(f, "!IPSRC_RND") == 0)
+ pkt_dev->flags &= ~F_IPSRC_RND;
+
+ else if (strcmp(f, "TXSIZE_RND") == 0)
+ pkt_dev->flags |= F_TXSIZE_RND;
+
+ else if (strcmp(f, "!TXSIZE_RND") == 0)
+ pkt_dev->flags &= ~F_TXSIZE_RND;
+
+ else if (strcmp(f, "IPDST_RND") == 0)
+ pkt_dev->flags |= F_IPDST_RND;
+
+ else if (strcmp(f, "!IPDST_RND") == 0)
+ pkt_dev->flags &= ~F_IPDST_RND;
+
+ else if (strcmp(f, "UDPSRC_RND") == 0)
+ pkt_dev->flags |= F_UDPSRC_RND;
+
+ else if (strcmp(f, "!UDPSRC_RND") == 0)
+ pkt_dev->flags &= ~F_UDPSRC_RND;
+
+ else if (strcmp(f, "UDPDST_RND") == 0)
+ pkt_dev->flags |= F_UDPDST_RND;
+
+ else if (strcmp(f, "!UDPDST_RND") == 0)
+ pkt_dev->flags &= ~F_UDPDST_RND;
+
+ else if (strcmp(f, "MACSRC_RND") == 0)
+ pkt_dev->flags |= F_MACSRC_RND;
+
+ else if (strcmp(f, "!MACSRC_RND") == 0)
+ pkt_dev->flags &= ~F_MACSRC_RND;
+
+ else if (strcmp(f, "MACDST_RND") == 0)
+ pkt_dev->flags |= F_MACDST_RND;
+
+ else if (strcmp(f, "!MACDST_RND") == 0)
+ pkt_dev->flags &= ~F_MACDST_RND;
+
+ else if (strcmp(f, "MPLS_RND") == 0)
+ pkt_dev->flags |= F_MPLS_RND;
+
+ else if (strcmp(f, "!MPLS_RND") == 0)
+ pkt_dev->flags &= ~F_MPLS_RND;
+
else {
- sprintf(result, "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
+ sprintf(pg_result,
+ "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
f,
- "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, MACSRC_RND, MACDST_RND\n");
+ "IPSRC_RND, IPDST_RND, TXSIZE_RND, UDPSRC_RND, UDPDST_RND, MACSRC_RND, MACDST_RND\n");
return count;
}
- sprintf(result, "OK: flags=0x%x", info->flags);
+ sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
return count;
}
if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
- len = strn_len(&user_buffer[i], sizeof(info->dst_min) - 1);
- if (len < 0)
+ len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
+ if (len < 0) {
return len;
- memset(info->dst_min, 0, sizeof(info->dst_min));
- if (copy_from_user(info->dst_min, &user_buffer[i], len))
+ }
+
+ if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
- if(debug)
- printk("pg: dst_min set to: %s\n", info->dst_min);
+ buf[len] = 0;
+ if (strcmp(buf, pkt_dev->dst_min) != 0) {
+ memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
+ strncpy(pkt_dev->dst_min, buf, len);
+ pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
+ pkt_dev->cur_daddr = pkt_dev->daddr_min;
+ }
+ if (debug)
+ printk("pktgen: dst_min set to: %s\n",
+ pkt_dev->dst_min);
i += len;
- sprintf(result, "OK: dst_min=%s", info->dst_min);
+ sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
return count;
}
if (!strcmp(name, "dst_max")) {
- len = strn_len(&user_buffer[i], sizeof(info->dst_max) - 1);
- if (len < 0)
+ len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
+ if (len < 0) {
return len;
- memset(info->dst_max, 0, sizeof(info->dst_max));
- if (copy_from_user(info->dst_max, &user_buffer[i], len))
+ }
+
+ if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
- if(debug)
- printk("pg: dst_max set to: %s\n", info->dst_max);
+
+ buf[len] = 0;
+ if (strcmp(buf, pkt_dev->dst_max) != 0) {
+ memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
+ strncpy(pkt_dev->dst_max, buf, len);
+ pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
+ pkt_dev->cur_daddr = pkt_dev->daddr_max;
+ }
+ if (debug)
+ printk("pktgen: dst_max set to: %s\n",
+ pkt_dev->dst_max);
i += len;
- sprintf(result, "OK: dst_max=%s", info->dst_max);
+ sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
return count;
}
- if (!strcmp(name, "src_min")) {
- len = strn_len(&user_buffer[i], sizeof(info->src_min) - 1);
+ if (!strcmp(name, "dst6")) {
+ len = strn_len(&user_buffer[i], sizeof(buf) - 1);
if (len < 0)
return len;
- memset(info->src_min, 0, sizeof(info->src_min));
- if (copy_from_user(info->src_min, &user_buffer[i], len))
+
+ pkt_dev->flags |= F_IPV6;
+
+ if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
- if(debug)
- printk("pg: src_min set to: %s\n", info->src_min);
+ buf[len] = 0;
+
+ scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
+ fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
+
+ ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
+
+ if (debug)
+ printk("pktgen: dst6 set to: %s\n", buf);
+
i += len;
- sprintf(result, "OK: src_min=%s", info->src_min);
+ sprintf(pg_result, "OK: dst6=%s", buf);
return count;
}
- if (!strcmp(name, "src_max")) {
- len = strn_len(&user_buffer[i], sizeof(info->src_max) - 1);
+ if (!strcmp(name, "dst6_min")) {
+ len = strn_len(&user_buffer[i], sizeof(buf) - 1);
if (len < 0)
return len;
- memset(info->src_max, 0, sizeof(info->src_max));
- if (copy_from_user(info->src_max, &user_buffer[i], len))
+
+ pkt_dev->flags |= F_IPV6;
+
+ if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
- if(debug)
- printk("pg: src_max set to: %s\n", info->src_max);
+ buf[len] = 0;
+
+ scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
+ fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
+
+ ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
+ &pkt_dev->min_in6_daddr);
+ if (debug)
+ printk("pktgen: dst6_min set to: %s\n", buf);
+
+ i += len;
+ sprintf(pg_result, "OK: dst6_min=%s", buf);
+ return count;
+ }
+ if (!strcmp(name, "dst6_max")) {
+ len = strn_len(&user_buffer[i], sizeof(buf) - 1);
+ if (len < 0)
+ return len;
+
+ pkt_dev->flags |= F_IPV6;
+
+ if (copy_from_user(buf, &user_buffer[i], len))
+ return -EFAULT;
+ buf[len] = 0;
+
+ scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
+ fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
+
+ if (debug)
+ printk("pktgen: dst6_max set to: %s\n", buf);
+
+ i += len;
+ sprintf(pg_result, "OK: dst6_max=%s", buf);
+ return count;
+ }
+ if (!strcmp(name, "src6")) {
+ len = strn_len(&user_buffer[i], sizeof(buf) - 1);
+ if (len < 0)
+ return len;
+
+ pkt_dev->flags |= F_IPV6;
+
+ if (copy_from_user(buf, &user_buffer[i], len))
+ return -EFAULT;
+ buf[len] = 0;
+
+ scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
+ fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
+
+ ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
+
+ if (debug)
+ printk("pktgen: src6 set to: %s\n", buf);
+
+ i += len;
+ sprintf(pg_result, "OK: src6=%s", buf);
+ return count;
+ }
+ if (!strcmp(name, "src_min")) {
+ len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
+ if (len < 0) {
+ return len;
+ }
+ if (copy_from_user(buf, &user_buffer[i], len))
+ return -EFAULT;
+ buf[len] = 0;
+ if (strcmp(buf, pkt_dev->src_min) != 0) {
+ memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
+ strncpy(pkt_dev->src_min, buf, len);
+ pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
+ pkt_dev->cur_saddr = pkt_dev->saddr_min;
+ }
+ if (debug)
+ printk("pktgen: src_min set to: %s\n",
+ pkt_dev->src_min);
+ i += len;
+ sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
+ return count;
+ }
+ if (!strcmp(name, "src_max")) {
+ len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
+ if (len < 0) {
+ return len;
+ }
+ if (copy_from_user(buf, &user_buffer[i], len))
+ return -EFAULT;
+ buf[len] = 0;
+ if (strcmp(buf, pkt_dev->src_max) != 0) {
+ memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
+ strncpy(pkt_dev->src_max, buf, len);
+ pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
+ pkt_dev->cur_saddr = pkt_dev->saddr_max;
+ }
+ if (debug)
+ printk("pktgen: src_max set to: %s\n",
+ pkt_dev->src_max);
i += len;
- sprintf(result, "OK: src_max=%s", info->src_max);
+ sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
return count;
}
- if (!strcmp(name, "dstmac")) {
+ if (!strcmp(name, "dst_mac")) {
char *v = valstr;
- unsigned char *m = info->dst_mac;
+ unsigned char old_dmac[ETH_ALEN];
+ unsigned char *m = pkt_dev->dst_mac;
+ memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
memset(valstr, 0, sizeof(valstr));
if (copy_from_user(valstr, &user_buffer[i], len))
return -EFAULT;
i += len;
- for(*m = 0;*v && m < info->dst_mac + 6; v++) {
+ for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
if (*v >= '0' && *v <= '9') {
*m *= 16;
*m += *v - '0';
m++;
*m = 0;
}
- }
- sprintf(result, "OK: dstmac");
+ }
+
+ /* Set up Dest MAC */
+ if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
+ memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
+
+ sprintf(pg_result, "OK: dstmac");
return count;
}
- if (!strcmp(name, "srcmac")) {
+ if (!strcmp(name, "src_mac")) {
char *v = valstr;
- unsigned char *m = info->src_mac;
+ unsigned char *m = pkt_dev->src_mac;
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
- if (len < 0)
+ if (len < 0) {
return len;
+ }
memset(valstr, 0, sizeof(valstr));
if (copy_from_user(valstr, &user_buffer[i], len))
return -EFAULT;
i += len;
- for(*m = 0;*v && m < info->src_mac + 6; v++) {
+ for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
if (*v >= '0' && *v <= '9') {
*m *= 16;
*m += *v - '0';
m++;
*m = 0;
}
- }
- sprintf(result, "OK: srcmac");
+ }
+
+ sprintf(pg_result, "OK: srcmac");
+ return count;
+ }
+
+ if (!strcmp(name, "clear_counters")) {
+ pktgen_clear_counters(pkt_dev);
+ sprintf(pg_result, "OK: Clearing counters.\n");
return count;
}
- if (!strcmp(name, "inject") || !strcmp(name, "start")) {
- if (info->busy) {
- strcpy(info->result, "Already running...\n");
+ if (!strcmp(name, "flows")) {
+ len = num_arg(&user_buffer[i], 10, &value);
+ if (len < 0) {
+ return len;
}
- else {
- info->busy = 1;
- strcpy(info->result, "Starting");
- inject(info);
- info->busy = 0;
+ i += len;
+ if (value > MAX_CFLOWS)
+ value = MAX_CFLOWS;
+
+ pkt_dev->cflows = value;
+ sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
+ return count;
+ }
+
+ if (!strcmp(name, "flowlen")) {
+ len = num_arg(&user_buffer[i], 10, &value);
+ if (len < 0) {
+ return len;
}
+ i += len;
+ pkt_dev->lflow = value;
+ sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
+ return count;
+ }
+
+ if (!strcmp(name, "mpls")) {
+ unsigned n, offset;
+ len = get_labels(&user_buffer[i], pkt_dev);
+ if (len < 0) { return len; }
+ i += len;
+ offset = sprintf(pg_result, "OK: mpls=");
+ for(n = 0; n < pkt_dev->nr_labels; n++)
+ offset += sprintf(pg_result + offset,
+ "%08x%s", ntohl(pkt_dev->labels[n]),
+ n == pkt_dev->nr_labels-1 ? "" : ",");
return count;
}
- sprintf(info->result, "No such parameter \"%s\"", name);
+ sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
return -EINVAL;
}
+static int pktgen_if_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, pktgen_if_show, PDE(inode)->data);
+}
+
+static struct file_operations pktgen_if_fops = {
+ .owner = THIS_MODULE,
+ .open = pktgen_if_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = pktgen_if_write,
+ .release = single_release,
+};
+
+static int pktgen_thread_show(struct seq_file *seq, void *v)
+{
+ struct pktgen_thread *t = seq->private;
+ struct pktgen_dev *pkt_dev;
+
+ BUG_ON(!t);
+
+ seq_printf(seq, "Name: %s max_before_softirq: %d\n",
+ t->name, t->max_before_softirq);
+
+ seq_printf(seq, "Running: ");
+
+ if_lock(t);
+ list_for_each_entry(pkt_dev, &t->if_list, list)
+ if (pkt_dev->running)
+ seq_printf(seq, "%s ", pkt_dev->ifname);
+
+ seq_printf(seq, "\nStopped: ");
+
+ list_for_each_entry(pkt_dev, &t->if_list, list)
+ if (!pkt_dev->running)
+ seq_printf(seq, "%s ", pkt_dev->ifname);
+
+ if (t->result[0])
+ seq_printf(seq, "\nResult: %s\n", t->result);
+ else
+ seq_printf(seq, "\nResult: NA\n");
+
+ if_unlock(t);
+
+ return 0;
+}
+
+static ssize_t pktgen_thread_write(struct file *file,
+ const char __user * user_buffer,
+ size_t count, loff_t * offset)
+{
+ struct seq_file *seq = (struct seq_file *)file->private_data;
+ struct pktgen_thread *t = seq->private;
+ int i = 0, max, len, ret;
+ char name[40];
+ char *pg_result;
+ unsigned long value = 0;
+
+ if (count < 1) {
+ // sprintf(pg_result, "Wrong command format");
+ return -EINVAL;
+ }
+
+ max = count - i;
+ len = count_trail_chars(&user_buffer[i], max);
+ if (len < 0)
+ return len;
+
+ i += len;
+
+ /* Read variable name */
+
+ len = strn_len(&user_buffer[i], sizeof(name) - 1);
+ if (len < 0)
+ return len;
+
+ memset(name, 0, sizeof(name));
+ if (copy_from_user(name, &user_buffer[i], len))
+ return -EFAULT;
+ i += len;
+
+ max = count - i;
+ len = count_trail_chars(&user_buffer[i], max);
+ if (len < 0)
+ return len;
+
+ i += len;
+
+ if (debug)
+ printk("pktgen: t=%s, count=%lu\n", name, (unsigned long)count);
+
+ if (!t) {
+ printk("pktgen: ERROR: No thread\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ pg_result = &(t->result[0]);
+
+ if (!strcmp(name, "add_device")) {
+ char f[32];
+ memset(f, 0, 32);
+ len = strn_len(&user_buffer[i], sizeof(f) - 1);
+ if (len < 0) {
+ ret = len;
+ goto out;
+ }
+ if (copy_from_user(f, &user_buffer[i], len))
+ return -EFAULT;
+ i += len;
+ mutex_lock(&pktgen_thread_lock);
+ pktgen_add_device(t, f);
+ mutex_unlock(&pktgen_thread_lock);
+ ret = count;
+ sprintf(pg_result, "OK: add_device=%s", f);
+ goto out;
+ }
+
+ if (!strcmp(name, "rem_device_all")) {
+ mutex_lock(&pktgen_thread_lock);
+ t->control |= T_REMDEVALL;
+ mutex_unlock(&pktgen_thread_lock);
+ schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
+ ret = count;
+ sprintf(pg_result, "OK: rem_device_all");
+ goto out;
+ }
+
+ if (!strcmp(name, "max_before_softirq")) {
+ len = num_arg(&user_buffer[i], 10, &value);
+ mutex_lock(&pktgen_thread_lock);
+ t->max_before_softirq = value;
+ mutex_unlock(&pktgen_thread_lock);
+ ret = count;
+ sprintf(pg_result, "OK: max_before_softirq=%lu", value);
+ goto out;
+ }
+
+ ret = -EINVAL;
+out:
+ return ret;
+}
+
+static int pktgen_thread_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, pktgen_thread_show, PDE(inode)->data);
+}
+
+static struct file_operations pktgen_thread_fops = {
+ .owner = THIS_MODULE,
+ .open = pktgen_thread_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = pktgen_thread_write,
+ .release = single_release,
+};
-static int create_proc_dir(void)
+/* Think find or remove for NN */
+static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
{
- int len;
- /* does proc_dir already exists */
- len = strlen(PG_PROC_DIR);
-
- for (proc_dir = proc_net->subdir; proc_dir;
- proc_dir=proc_dir->next) {
- if ((proc_dir->namelen == len) &&
- (! memcmp(proc_dir->name, PG_PROC_DIR, len)))
+ struct pktgen_thread *t;
+ struct pktgen_dev *pkt_dev = NULL;
+
+ list_for_each_entry(t, &pktgen_threads, th_list) {
+ pkt_dev = pktgen_find_dev(t, ifname);
+ if (pkt_dev) {
+ if (remove) {
+ if_lock(t);
+ pkt_dev->removal_mark = 1;
+ t->control |= T_REMDEV;
+ if_unlock(t);
+ }
break;
+ }
}
- if (!proc_dir)
- proc_dir = create_proc_entry(PG_PROC_DIR, S_IFDIR, proc_net);
- if (!proc_dir) return -ENODEV;
- return 1;
+ return pkt_dev;
}
-static int remove_proc_dir(void)
+/*
+ * mark a device for removal
+ */
+static int pktgen_mark_device(const char *ifname)
{
- remove_proc_entry(PG_PROC_DIR, proc_net);
- return 1;
+ struct pktgen_dev *pkt_dev = NULL;
+ const int max_tries = 10, msec_per_try = 125;
+ int i = 0;
+ int ret = 0;
+
+ mutex_lock(&pktgen_thread_lock);
+ PG_DEBUG(printk("pktgen: pktgen_mark_device marking %s for removal\n",
+ ifname));
+
+ while (1) {
+
+ pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
+ if (pkt_dev == NULL)
+ break; /* success */
+
+ mutex_unlock(&pktgen_thread_lock);
+ PG_DEBUG(printk("pktgen: pktgen_mark_device waiting for %s "
+ "to disappear....\n", ifname));
+ schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
+ mutex_lock(&pktgen_thread_lock);
+
+ if (++i >= max_tries) {
+ printk("pktgen_mark_device: timed out after waiting "
+ "%d msec for device %s to be removed\n",
+ msec_per_try * i, ifname);
+ ret = 1;
+ break;
+ }
+
+ }
+
+ mutex_unlock(&pktgen_thread_lock);
+
+ return ret;
}
-static int __init init(void)
+static int pktgen_device_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
{
- int i;
- printk(version);
- cycles_calibrate();
- if (cpu_speed == 0) {
- printk("pktgen: Error: your machine does not have working cycle counter.\n");
- return -EINVAL;
+ struct net_device *dev = (struct net_device *)(ptr);
+
+ /* It is OK that we do not hold the group lock right now,
+ * as we run under the RTNL lock.
+ */
+
+ switch (event) {
+ case NETDEV_CHANGEADDR:
+ case NETDEV_GOING_DOWN:
+ case NETDEV_DOWN:
+ case NETDEV_UP:
+ /* Ignore for now */
+ break;
+
+ case NETDEV_UNREGISTER:
+ pktgen_mark_device(dev->name);
+ break;
+ };
+
+ return NOTIFY_DONE;
+}
+
+/* Associate pktgen_dev with a device. */
+
+static struct net_device *pktgen_setup_dev(struct pktgen_dev *pkt_dev)
+{
+ struct net_device *odev;
+
+ /* Clean old setups */
+
+ if (pkt_dev->odev) {
+ dev_put(pkt_dev->odev);
+ pkt_dev->odev = NULL;
}
- create_proc_dir();
-
- for (i = 0; i<MAX_PKTGEN; i++) {
- memset(&(pginfos[i]), 0, sizeof(pginfos[i]));
- pginfos[i].pkt_size = ETH_ZLEN;
- pginfos[i].nfrags = 0;
- pginfos[i].clone_skb = clone_skb_d;
- pginfos[i].ipg = ipg_d;
- pginfos[i].count = count_d;
- pginfos[i].sofar = 0;
- pginfos[i].hh[12] = 0x08; /* fill in protocol. Rest is filled in later. */
- pginfos[i].hh[13] = 0x00;
- pginfos[i].udp_src_min = 9; /* sink NULL */
- pginfos[i].udp_src_max = 9;
- pginfos[i].udp_dst_min = 9;
- pginfos[i].udp_dst_max = 9;
-
- sprintf(pginfos[i].fname, "net/%s/pg%i", PG_PROC_DIR, i);
- pginfos[i].proc_ent = create_proc_entry(pginfos[i].fname, 0600, 0);
- if (!pginfos[i].proc_ent) {
- printk("pktgen: Error: cannot create net/%s/pg procfs entry.\n", PG_PROC_DIR);
- goto cleanup_mem;
- }
- pginfos[i].proc_ent->read_proc = proc_read;
- pginfos[i].proc_ent->write_proc = proc_write;
- pginfos[i].proc_ent->data = (void*)(long)(i);
- pginfos[i].proc_ent->owner = THIS_MODULE;
-
- sprintf(pginfos[i].busy_fname, "net/%s/pg_busy%i", PG_PROC_DIR, i);
- pginfos[i].busy_proc_ent = create_proc_entry(pginfos[i].busy_fname, 0, 0);
- if (!pginfos[i].busy_proc_ent) {
- printk("pktgen: Error: cannot create net/%s/pg_busy procfs entry.\n", PG_PROC_DIR);
- goto cleanup_mem;
- }
- pginfos[i].busy_proc_ent->read_proc = proc_busy_read;
- pginfos[i].busy_proc_ent->data = (void*)(long)(i);
+ odev = dev_get_by_name(pkt_dev->ifname);
+
+ if (!odev) {
+ printk("pktgen: no such netdevice: \"%s\"\n", pkt_dev->ifname);
+ goto out;
}
- return 0;
-
-cleanup_mem:
- for (i = 0; i<MAX_PKTGEN; i++) {
- if (strlen(pginfos[i].fname)) {
- remove_proc_entry(pginfos[i].fname, NULL);
+ if (odev->type != ARPHRD_ETHER) {
+ printk("pktgen: not an ethernet device: \"%s\"\n",
+ pkt_dev->ifname);
+ goto out_put;
+ }
+ if (!netif_running(odev)) {
+ printk("pktgen: device is down: \"%s\"\n", pkt_dev->ifname);
+ goto out_put;
+ }
+ pkt_dev->odev = odev;
+
+ return pkt_dev->odev;
+
+out_put:
+ dev_put(odev);
+out:
+ return NULL;
+
+}
+
+/* Read pkt_dev from the interface and set up internal pktgen_dev
+ * structure to have the right information to create/send packets
+ */
+static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
+{
+ /* Try once more, just in case it works now. */
+ if (!pkt_dev->odev)
+ pktgen_setup_dev(pkt_dev);
+
+ if (!pkt_dev->odev) {
+ printk("pktgen: ERROR: pkt_dev->odev == NULL in setup_inject.\n");
+ sprintf(pkt_dev->result,
+ "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
+ return;
+ }
+
+ /* Default to the interface's mac if not explicitly set. */
+
+ if (is_zero_ether_addr(pkt_dev->src_mac))
+ memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
+
+ /* Set up Dest MAC */
+ memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
+
+ /* Set up pkt size */
+ pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
+
+ if (pkt_dev->flags & F_IPV6) {
+ /*
+ * Skip this automatic address setting until locks or functions
+ * gets exported
+ */
+
+#ifdef NOTNOW
+ int i, set = 0, err = 1;
+ struct inet6_dev *idev;
+
+ for (i = 0; i < IN6_ADDR_HSIZE; i++)
+ if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
+ set = 1;
+ break;
+ }
+
+ if (!set) {
+
+ /*
+ * Use linklevel address if unconfigured.
+ *
+ * use ipv6_get_lladdr if/when it's get exported
+ */
+
+ read_lock(&addrconf_lock);
+ if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
+ struct inet6_ifaddr *ifp;
+
+ read_lock_bh(&idev->lock);
+ for (ifp = idev->addr_list; ifp;
+ ifp = ifp->if_next) {
+ if (ifp->scope == IFA_LINK
+ && !(ifp->
+ flags & IFA_F_TENTATIVE)) {
+ ipv6_addr_copy(&pkt_dev->
+ cur_in6_saddr,
+ &ifp->addr);
+ err = 0;
+ break;
+ }
+ }
+ read_unlock_bh(&idev->lock);
+ }
+ read_unlock(&addrconf_lock);
+ if (err)
+ printk("pktgen: ERROR: IPv6 link address not availble.\n");
}
- if (strlen(pginfos[i].busy_fname)) {
- remove_proc_entry(pginfos[i].busy_fname, NULL);
+#endif
+ } else {
+ pkt_dev->saddr_min = 0;
+ pkt_dev->saddr_max = 0;
+ if (strlen(pkt_dev->src_min) == 0) {
+
+ struct in_device *in_dev;
+
+ rcu_read_lock();
+ in_dev = __in_dev_get_rcu(pkt_dev->odev);
+ if (in_dev) {
+ if (in_dev->ifa_list) {
+ pkt_dev->saddr_min =
+ in_dev->ifa_list->ifa_address;
+ pkt_dev->saddr_max = pkt_dev->saddr_min;
+ }
+ }
+ rcu_read_unlock();
+ } else {
+ pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
+ pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
}
+
+ pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
+ pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
}
- return -ENOMEM;
+ /* Initialize current values. */
+ pkt_dev->cur_dst_mac_offset = 0;
+ pkt_dev->cur_src_mac_offset = 0;
+ pkt_dev->cur_saddr = pkt_dev->saddr_min;
+ pkt_dev->cur_daddr = pkt_dev->daddr_min;
+ pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
+ pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
+ pkt_dev->nflows = 0;
}
-
-static void __exit cleanup(void)
+static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us)
{
- int i;
- for (i = 0; i<MAX_PKTGEN; i++) {
- if (strlen(pginfos[i].fname)) {
- remove_proc_entry(pginfos[i].fname, NULL);
+ __u64 start;
+ __u64 now;
+
+ start = now = getCurUs();
+ printk(KERN_INFO "sleeping for %d\n", (int)(spin_until_us - now));
+ while (now < spin_until_us) {
+ /* TODO: optimize sleeping behavior */
+ if (spin_until_us - now > jiffies_to_usecs(1) + 1)
+ schedule_timeout_interruptible(1);
+ else if (spin_until_us - now > 100) {
+ do_softirq();
+ if (!pkt_dev->running)
+ return;
+ if (need_resched())
+ schedule();
}
- if (strlen(pginfos[i].busy_fname)) {
- remove_proc_entry(pginfos[i].busy_fname, NULL);
+
+ now = getCurUs();
+ }
+
+ pkt_dev->idle_acc += now - start;
+}
+
+/* Increment/randomize headers according to flags and current values
+ * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
+ */
+static void mod_cur_headers(struct pktgen_dev *pkt_dev)
+{
+ __u32 imn;
+ __u32 imx;
+ int flow = 0;
+
+ if (pkt_dev->cflows) {
+ flow = pktgen_random() % pkt_dev->cflows;
+
+ if (pkt_dev->flows[flow].count > pkt_dev->lflow)
+ pkt_dev->flows[flow].count = 0;
+ }
+
+ /* Deal with source MAC */
+ if (pkt_dev->src_mac_count > 1) {
+ __u32 mc;
+ __u32 tmp;
+
+ if (pkt_dev->flags & F_MACSRC_RND)
+ mc = pktgen_random() % (pkt_dev->src_mac_count);
+ else {
+ mc = pkt_dev->cur_src_mac_offset++;
+ if (pkt_dev->cur_src_mac_offset >
+ pkt_dev->src_mac_count)
+ pkt_dev->cur_src_mac_offset = 0;
}
+
+ tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
+ pkt_dev->hh[11] = tmp;
+ tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
+ pkt_dev->hh[10] = tmp;
+ tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
+ pkt_dev->hh[9] = tmp;
+ tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
+ pkt_dev->hh[8] = tmp;
+ tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
+ pkt_dev->hh[7] = tmp;
}
- remove_proc_dir();
+
+ /* Deal with Destination MAC */
+ if (pkt_dev->dst_mac_count > 1) {
+ __u32 mc;
+ __u32 tmp;
+
+ if (pkt_dev->flags & F_MACDST_RND)
+ mc = pktgen_random() % (pkt_dev->dst_mac_count);
+
+ else {
+ mc = pkt_dev->cur_dst_mac_offset++;
+ if (pkt_dev->cur_dst_mac_offset >
+ pkt_dev->dst_mac_count) {
+ pkt_dev->cur_dst_mac_offset = 0;
+ }
+ }
+
+ tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
+ pkt_dev->hh[5] = tmp;
+ tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
+ pkt_dev->hh[4] = tmp;
+ tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
+ pkt_dev->hh[3] = tmp;
+ tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
+ pkt_dev->hh[2] = tmp;
+ tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
+ pkt_dev->hh[1] = tmp;
+ }
+
+ if (pkt_dev->flags & F_MPLS_RND) {
+ unsigned i;
+ for(i = 0; i < pkt_dev->nr_labels; i++)
+ if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
+ pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
+ (pktgen_random() &
+ htonl(0x000fffff));
+ }
+
+ if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
+ if (pkt_dev->flags & F_UDPSRC_RND)
+ pkt_dev->cur_udp_src =
+ ((pktgen_random() %
+ (pkt_dev->udp_src_max - pkt_dev->udp_src_min)) +
+ pkt_dev->udp_src_min);
+
+ else {
+ pkt_dev->cur_udp_src++;
+ if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
+ pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
+ }
+ }
+
+ if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
+ if (pkt_dev->flags & F_UDPDST_RND) {
+ pkt_dev->cur_udp_dst =
+ ((pktgen_random() %
+ (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)) +
+ pkt_dev->udp_dst_min);
+ } else {
+ pkt_dev->cur_udp_dst++;
+ if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
+ pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
+ }
+ }
+
+ if (!(pkt_dev->flags & F_IPV6)) {
+
+ if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
+ ntohl(pkt_dev->
+ saddr_max))) {
+ __u32 t;
+ if (pkt_dev->flags & F_IPSRC_RND)
+ t = ((pktgen_random() % (imx - imn)) + imn);
+ else {
+ t = ntohl(pkt_dev->cur_saddr);
+ t++;
+ if (t > imx) {
+ t = imn;
+ }
+ }
+ pkt_dev->cur_saddr = htonl(t);
+ }
+
+ if (pkt_dev->cflows && pkt_dev->flows[flow].count != 0) {
+ pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
+ } else {
+
+ if ((imn = ntohl(pkt_dev->daddr_min)) < (imx =
+ ntohl(pkt_dev->
+ daddr_max)))
+ {
+ __u32 t;
+ if (pkt_dev->flags & F_IPDST_RND) {
+
+ t = ((pktgen_random() % (imx - imn)) +
+ imn);
+ t = htonl(t);
+
+ while (LOOPBACK(t) || MULTICAST(t)
+ || BADCLASS(t) || ZERONET(t)
+ || LOCAL_MCAST(t)) {
+ t = ((pktgen_random() %
+ (imx - imn)) + imn);
+ t = htonl(t);
+ }
+ pkt_dev->cur_daddr = t;
+ }
+
+ else {
+ t = ntohl(pkt_dev->cur_daddr);
+ t++;
+ if (t > imx) {
+ t = imn;
+ }
+ pkt_dev->cur_daddr = htonl(t);
+ }
+ }
+ if (pkt_dev->cflows) {
+ pkt_dev->flows[flow].cur_daddr =
+ pkt_dev->cur_daddr;
+ pkt_dev->nflows++;
+ }
+ }
+ } else { /* IPV6 * */
+
+ if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
+ pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
+ pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
+ pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
+ else {
+ int i;
+
+ /* Only random destinations yet */
+
+ for (i = 0; i < 4; i++) {
+ pkt_dev->cur_in6_daddr.s6_addr32[i] =
+ ((pktgen_random() |
+ pkt_dev->min_in6_daddr.s6_addr32[i]) &
+ pkt_dev->max_in6_daddr.s6_addr32[i]);
+ }
+ }
+ }
+
+ if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
+ __u32 t;
+ if (pkt_dev->flags & F_TXSIZE_RND) {
+ t = ((pktgen_random() %
+ (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size))
+ + pkt_dev->min_pkt_size);
+ } else {
+ t = pkt_dev->cur_pkt_size + 1;
+ if (t > pkt_dev->max_pkt_size)
+ t = pkt_dev->min_pkt_size;
+ }
+ pkt_dev->cur_pkt_size = t;
+ }
+
+ pkt_dev->flows[flow].count++;
+}
+
+static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
+{
+ unsigned i;
+ for(i = 0; i < pkt_dev->nr_labels; i++) {
+ *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
+ }
+ mpls--;
+ *mpls |= MPLS_STACK_BOTTOM;
+}
+
+static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
+ struct pktgen_dev *pkt_dev)
+{
+ struct sk_buff *skb = NULL;
+ __u8 *eth;
+ struct udphdr *udph;
+ int datalen, iplen;
+ struct iphdr *iph;
+ struct pktgen_hdr *pgh = NULL;
+ __be16 protocol = __constant_htons(ETH_P_IP);
+ __be32 *mpls;
+
+ if (pkt_dev->nr_labels)
+ protocol = __constant_htons(ETH_P_MPLS_UC);
+
+ /* Update any of the values, used when we're incrementing various
+ * fields.
+ */
+ mod_cur_headers(pkt_dev);
+
+ datalen = (odev->hard_header_len + 16) & ~0xf;
+ skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen +
+ pkt_dev->nr_labels*sizeof(u32), GFP_ATOMIC);
+ if (!skb) {
+ sprintf(pkt_dev->result, "No memory");
+ return NULL;
+ }
+
+ skb_reserve(skb, datalen);
+
+ /* Reserve for ethernet and IP header */
+ eth = (__u8 *) skb_push(skb, 14);
+ mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
+ if (pkt_dev->nr_labels)
+ mpls_push(mpls, pkt_dev);
+ iph = (struct iphdr *)skb_put(skb, sizeof(struct iphdr));
+ udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
+
+ memcpy(eth, pkt_dev->hh, 12);
+ *(u16 *) & eth[12] = protocol;
+
+ /* Eth + IPh + UDPh + mpls */
+ datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
+ pkt_dev->nr_labels*sizeof(u32);
+ if (datalen < sizeof(struct pktgen_hdr))
+ datalen = sizeof(struct pktgen_hdr);
+
+ udph->source = htons(pkt_dev->cur_udp_src);
+ udph->dest = htons(pkt_dev->cur_udp_dst);
+ udph->len = htons(datalen + 8); /* DATA + udphdr */
+ udph->check = 0; /* No checksum */
+
+ iph->ihl = 5;
+ iph->version = 4;
+ iph->ttl = 32;
+ iph->tos = 0;
+ iph->protocol = IPPROTO_UDP; /* UDP */
+ iph->saddr = pkt_dev->cur_saddr;
+ iph->daddr = pkt_dev->cur_daddr;
+ iph->frag_off = 0;
+ iplen = 20 + 8 + datalen;
+ iph->tot_len = htons(iplen);
+ iph->check = 0;
+ iph->check = ip_fast_csum((void *)iph, iph->ihl);
+ skb->protocol = protocol;
+ skb->mac.raw = ((u8 *) iph) - 14 - pkt_dev->nr_labels*sizeof(u32);
+ skb->dev = odev;
+ skb->pkt_type = PACKET_HOST;
+
+ if (pkt_dev->nfrags <= 0)
+ pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
+ else {
+ int frags = pkt_dev->nfrags;
+ int i;
+
+ pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
+
+ if (frags > MAX_SKB_FRAGS)
+ frags = MAX_SKB_FRAGS;
+ if (datalen > frags * PAGE_SIZE) {
+ skb_put(skb, datalen - frags * PAGE_SIZE);
+ datalen = frags * PAGE_SIZE;
+ }
+
+ i = 0;
+ while (datalen > 0) {
+ struct page *page = alloc_pages(GFP_KERNEL, 0);
+ skb_shinfo(skb)->frags[i].page = page;
+ skb_shinfo(skb)->frags[i].page_offset = 0;
+ skb_shinfo(skb)->frags[i].size =
+ (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
+ datalen -= skb_shinfo(skb)->frags[i].size;
+ skb->len += skb_shinfo(skb)->frags[i].size;
+ skb->data_len += skb_shinfo(skb)->frags[i].size;
+ i++;
+ skb_shinfo(skb)->nr_frags = i;
+ }
+
+ while (i < frags) {
+ int rem;
+
+ if (i == 0)
+ break;
+
+ rem = skb_shinfo(skb)->frags[i - 1].size / 2;
+ if (rem == 0)
+ break;
+
+ skb_shinfo(skb)->frags[i - 1].size -= rem;
+
+ skb_shinfo(skb)->frags[i] =
+ skb_shinfo(skb)->frags[i - 1];
+ get_page(skb_shinfo(skb)->frags[i].page);
+ skb_shinfo(skb)->frags[i].page =
+ skb_shinfo(skb)->frags[i - 1].page;
+ skb_shinfo(skb)->frags[i].page_offset +=
+ skb_shinfo(skb)->frags[i - 1].size;
+ skb_shinfo(skb)->frags[i].size = rem;
+ i++;
+ skb_shinfo(skb)->nr_frags = i;
+ }
+ }
+
+ /* Stamp the time, and sequence number, convert them to network byte order */
+
+ if (pgh) {
+ struct timeval timestamp;
+
+ pgh->pgh_magic = htonl(PKTGEN_MAGIC);
+ pgh->seq_num = htonl(pkt_dev->seq_num);
+
+ do_gettimeofday(×tamp);
+ pgh->tv_sec = htonl(timestamp.tv_sec);
+ pgh->tv_usec = htonl(timestamp.tv_usec);
+ }
+ pkt_dev->seq_num++;
+
+ return skb;
+}
+
+/*
+ * scan_ip6, fmt_ip taken from dietlibc-0.21
+ * Author Felix von Leitner <felix-dietlibc@fefe.de>
+ *
+ * Slightly modified for kernel.
+ * Should be candidate for net/ipv4/utils.c
+ * --ro
+ */
+
+static unsigned int scan_ip6(const char *s, char ip[16])
+{
+ unsigned int i;
+ unsigned int len = 0;
+ unsigned long u;
+ char suffix[16];
+ unsigned int prefixlen = 0;
+ unsigned int suffixlen = 0;
+ __u32 tmp;
+
+ for (i = 0; i < 16; i++)
+ ip[i] = 0;
+
+ for (;;) {
+ if (*s == ':') {
+ len++;
+ if (s[1] == ':') { /* Found "::", skip to part 2 */
+ s += 2;
+ len++;
+ break;
+ }
+ s++;
+ }
+ {
+ char *tmp;
+ u = simple_strtoul(s, &tmp, 16);
+ i = tmp - s;
+ }
+
+ if (!i)
+ return 0;
+ if (prefixlen == 12 && s[i] == '.') {
+
+ /* the last 4 bytes may be written as IPv4 address */
+
+ tmp = in_aton(s);
+ memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
+ return i + len;
+ }
+ ip[prefixlen++] = (u >> 8);
+ ip[prefixlen++] = (u & 255);
+ s += i;
+ len += i;
+ if (prefixlen == 16)
+ return len;
+ }
+
+/* part 2, after "::" */
+ for (;;) {
+ if (*s == ':') {
+ if (suffixlen == 0)
+ break;
+ s++;
+ len++;
+ } else if (suffixlen != 0)
+ break;
+ {
+ char *tmp;
+ u = simple_strtol(s, &tmp, 16);
+ i = tmp - s;
+ }
+ if (!i) {
+ if (*s)
+ len--;
+ break;
+ }
+ if (suffixlen + prefixlen <= 12 && s[i] == '.') {
+ tmp = in_aton(s);
+ memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
+ sizeof(tmp));
+ suffixlen += 4;
+ len += strlen(s);
+ break;
+ }
+ suffix[suffixlen++] = (u >> 8);
+ suffix[suffixlen++] = (u & 255);
+ s += i;
+ len += i;
+ if (prefixlen + suffixlen == 16)
+ break;
+ }
+ for (i = 0; i < suffixlen; i++)
+ ip[16 - suffixlen + i] = suffix[i];
+ return len;
+}
+
+static char tohex(char hexdigit)
+{
+ return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
+}
+
+static int fmt_xlong(char *s, unsigned int i)
+{
+ char *bak = s;
+ *s = tohex((i >> 12) & 0xf);
+ if (s != bak || *s != '0')
+ ++s;
+ *s = tohex((i >> 8) & 0xf);
+ if (s != bak || *s != '0')
+ ++s;
+ *s = tohex((i >> 4) & 0xf);
+ if (s != bak || *s != '0')
+ ++s;
+ *s = tohex(i & 0xf);
+ return s - bak + 1;
+}
+
+static unsigned int fmt_ip6(char *s, const char ip[16])
+{
+ unsigned int len;
+ unsigned int i;
+ unsigned int temp;
+ unsigned int compressing;
+ int j;
+
+ len = 0;
+ compressing = 0;
+ for (j = 0; j < 16; j += 2) {
+
+#ifdef V4MAPPEDPREFIX
+ if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
+ inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
+ temp = strlen(s);
+ return len + temp;
+ }
+#endif
+ temp = ((unsigned long)(unsigned char)ip[j] << 8) +
+ (unsigned long)(unsigned char)ip[j + 1];
+ if (temp == 0) {
+ if (!compressing) {
+ compressing = 1;
+ if (j == 0) {
+ *s++ = ':';
+ ++len;
+ }
+ }
+ } else {
+ if (compressing) {
+ compressing = 0;
+ *s++ = ':';
+ ++len;
+ }
+ i = fmt_xlong(s, temp);
+ len += i;
+ s += i;
+ if (j < 14) {
+ *s++ = ':';
+ ++len;
+ }
+ }
+ }
+ if (compressing) {
+ *s++ = ':';
+ ++len;
+ }
+ *s = 0;
+ return len;
+}
+
+static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
+ struct pktgen_dev *pkt_dev)
+{
+ struct sk_buff *skb = NULL;
+ __u8 *eth;
+ struct udphdr *udph;
+ int datalen;
+ struct ipv6hdr *iph;
+ struct pktgen_hdr *pgh = NULL;
+ __be16 protocol = __constant_htons(ETH_P_IPV6);
+ __be32 *mpls;
+
+ if (pkt_dev->nr_labels)
+ protocol = __constant_htons(ETH_P_MPLS_UC);
+
+ /* Update any of the values, used when we're incrementing various
+ * fields.
+ */
+ mod_cur_headers(pkt_dev);
+
+ skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 +
+ pkt_dev->nr_labels*sizeof(u32), GFP_ATOMIC);
+ if (!skb) {
+ sprintf(pkt_dev->result, "No memory");
+ return NULL;
+ }
+
+ skb_reserve(skb, 16);
+
+ /* Reserve for ethernet and IP header */
+ eth = (__u8 *) skb_push(skb, 14);
+ mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
+ if (pkt_dev->nr_labels)
+ mpls_push(mpls, pkt_dev);
+ iph = (struct ipv6hdr *)skb_put(skb, sizeof(struct ipv6hdr));
+ udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
+
+ memcpy(eth, pkt_dev->hh, 12);
+ *(u16 *) & eth[12] = __constant_htons(ETH_P_IPV6);
+
+ /* Eth + IPh + UDPh + mpls */
+ datalen = pkt_dev->cur_pkt_size - 14 -
+ sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
+ pkt_dev->nr_labels*sizeof(u32);
+
+ if (datalen < sizeof(struct pktgen_hdr)) {
+ datalen = sizeof(struct pktgen_hdr);
+ if (net_ratelimit())
+ printk(KERN_INFO "pktgen: increased datalen to %d\n",
+ datalen);
+ }
+
+ udph->source = htons(pkt_dev->cur_udp_src);
+ udph->dest = htons(pkt_dev->cur_udp_dst);
+ udph->len = htons(datalen + sizeof(struct udphdr));
+ udph->check = 0; /* No checksum */
+
+ *(u32 *) iph = __constant_htonl(0x60000000); /* Version + flow */
+
+ iph->hop_limit = 32;
+
+ iph->payload_len = htons(sizeof(struct udphdr) + datalen);
+ iph->nexthdr = IPPROTO_UDP;
+
+ ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
+ ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
+
+ skb->mac.raw = ((u8 *) iph) - 14 - pkt_dev->nr_labels*sizeof(u32);
+ skb->protocol = protocol;
+ skb->dev = odev;
+ skb->pkt_type = PACKET_HOST;
+
+ if (pkt_dev->nfrags <= 0)
+ pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
+ else {
+ int frags = pkt_dev->nfrags;
+ int i;
+
+ pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
+
+ if (frags > MAX_SKB_FRAGS)
+ frags = MAX_SKB_FRAGS;
+ if (datalen > frags * PAGE_SIZE) {
+ skb_put(skb, datalen - frags * PAGE_SIZE);
+ datalen = frags * PAGE_SIZE;
+ }
+
+ i = 0;
+ while (datalen > 0) {
+ struct page *page = alloc_pages(GFP_KERNEL, 0);
+ skb_shinfo(skb)->frags[i].page = page;
+ skb_shinfo(skb)->frags[i].page_offset = 0;
+ skb_shinfo(skb)->frags[i].size =
+ (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
+ datalen -= skb_shinfo(skb)->frags[i].size;
+ skb->len += skb_shinfo(skb)->frags[i].size;
+ skb->data_len += skb_shinfo(skb)->frags[i].size;
+ i++;
+ skb_shinfo(skb)->nr_frags = i;
+ }
+
+ while (i < frags) {
+ int rem;
+
+ if (i == 0)
+ break;
+
+ rem = skb_shinfo(skb)->frags[i - 1].size / 2;
+ if (rem == 0)
+ break;
+
+ skb_shinfo(skb)->frags[i - 1].size -= rem;
+
+ skb_shinfo(skb)->frags[i] =
+ skb_shinfo(skb)->frags[i - 1];
+ get_page(skb_shinfo(skb)->frags[i].page);
+ skb_shinfo(skb)->frags[i].page =
+ skb_shinfo(skb)->frags[i - 1].page;
+ skb_shinfo(skb)->frags[i].page_offset +=
+ skb_shinfo(skb)->frags[i - 1].size;
+ skb_shinfo(skb)->frags[i].size = rem;
+ i++;
+ skb_shinfo(skb)->nr_frags = i;
+ }
+ }
+
+ /* Stamp the time, and sequence number, convert them to network byte order */
+ /* should we update cloned packets too ? */
+ if (pgh) {
+ struct timeval timestamp;
+
+ pgh->pgh_magic = htonl(PKTGEN_MAGIC);
+ pgh->seq_num = htonl(pkt_dev->seq_num);
+
+ do_gettimeofday(×tamp);
+ pgh->tv_sec = htonl(timestamp.tv_sec);
+ pgh->tv_usec = htonl(timestamp.tv_usec);
+ }
+ pkt_dev->seq_num++;
+
+ return skb;
+}
+
+static inline struct sk_buff *fill_packet(struct net_device *odev,
+ struct pktgen_dev *pkt_dev)
+{
+ if (pkt_dev->flags & F_IPV6)
+ return fill_packet_ipv6(odev, pkt_dev);
+ else
+ return fill_packet_ipv4(odev, pkt_dev);
+}
+
+static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
+{
+ pkt_dev->seq_num = 1;
+ pkt_dev->idle_acc = 0;
+ pkt_dev->sofar = 0;
+ pkt_dev->tx_bytes = 0;
+ pkt_dev->errors = 0;
+}
+
+/* Set up structure for sending pkts, clear counters */
+
+static void pktgen_run(struct pktgen_thread *t)
+{
+ struct pktgen_dev *pkt_dev;
+ int started = 0;
+
+ PG_DEBUG(printk("pktgen: entering pktgen_run. %p\n", t));
+
+ if_lock(t);
+ list_for_each_entry(pkt_dev, &t->if_list, list) {
+
+ /*
+ * setup odev and create initial packet.
+ */
+ pktgen_setup_inject(pkt_dev);
+
+ if (pkt_dev->odev) {
+ pktgen_clear_counters(pkt_dev);
+ pkt_dev->running = 1; /* Cranke yeself! */
+ pkt_dev->skb = NULL;
+ pkt_dev->started_at = getCurUs();
+ pkt_dev->next_tx_us = getCurUs(); /* Transmit immediately */
+ pkt_dev->next_tx_ns = 0;
+
+ strcpy(pkt_dev->result, "Starting");
+ started++;
+ } else
+ strcpy(pkt_dev->result, "Error starting");
+ }
+ if_unlock(t);
+ if (started)
+ t->control &= ~(T_STOP);
+}
+
+static void pktgen_stop_all_threads_ifs(void)
+{
+ struct pktgen_thread *t;
+
+ PG_DEBUG(printk("pktgen: entering pktgen_stop_all_threads_ifs.\n"));
+
+ mutex_lock(&pktgen_thread_lock);
+
+ list_for_each_entry(t, &pktgen_threads, th_list)
+ t->control |= T_STOP;
+
+ mutex_unlock(&pktgen_thread_lock);
+}
+
+static int thread_is_running(struct pktgen_thread *t)
+{
+ struct pktgen_dev *pkt_dev;
+ int res = 0;
+
+ list_for_each_entry(pkt_dev, &t->if_list, list)
+ if (pkt_dev->running) {
+ res = 1;
+ break;
+ }
+ return res;
+}
+
+static int pktgen_wait_thread_run(struct pktgen_thread *t)
+{
+ if_lock(t);
+
+ while (thread_is_running(t)) {
+
+ if_unlock(t);
+
+ msleep_interruptible(100);
+
+ if (signal_pending(current))
+ goto signal;
+ if_lock(t);
+ }
+ if_unlock(t);
+ return 1;
+signal:
+ return 0;
+}
+
+static int pktgen_wait_all_threads_run(void)
+{
+ struct pktgen_thread *t;
+ int sig = 1;
+
+ mutex_lock(&pktgen_thread_lock);
+
+ list_for_each_entry(t, &pktgen_threads, th_list) {
+ sig = pktgen_wait_thread_run(t);
+ if (sig == 0)
+ break;
+ }
+
+ if (sig == 0)
+ list_for_each_entry(t, &pktgen_threads, th_list)
+ t->control |= (T_STOP);
+
+ mutex_unlock(&pktgen_thread_lock);
+ return sig;
+}
+
+static void pktgen_run_all_threads(void)
+{
+ struct pktgen_thread *t;
+
+ PG_DEBUG(printk("pktgen: entering pktgen_run_all_threads.\n"));
+
+ mutex_lock(&pktgen_thread_lock);
+
+ list_for_each_entry(t, &pktgen_threads, th_list)
+ t->control |= (T_RUN);
+
+ mutex_unlock(&pktgen_thread_lock);
+
+ schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
+
+ pktgen_wait_all_threads_run();
+}
+
+static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
+{
+ __u64 total_us, bps, mbps, pps, idle;
+ char *p = pkt_dev->result;
+
+ total_us = pkt_dev->stopped_at - pkt_dev->started_at;
+
+ idle = pkt_dev->idle_acc;
+
+ p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
+ (unsigned long long)total_us,
+ (unsigned long long)(total_us - idle),
+ (unsigned long long)idle,
+ (unsigned long long)pkt_dev->sofar,
+ pkt_dev->cur_pkt_size, nr_frags);
+
+ pps = pkt_dev->sofar * USEC_PER_SEC;
+
+ while ((total_us >> 32) != 0) {
+ pps >>= 1;
+ total_us >>= 1;
+ }
+
+ do_div(pps, total_us);
+
+ bps = pps * 8 * pkt_dev->cur_pkt_size;
+
+ mbps = bps;
+ do_div(mbps, 1000000);
+ p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
+ (unsigned long long)pps,
+ (unsigned long long)mbps,
+ (unsigned long long)bps,
+ (unsigned long long)pkt_dev->errors);
+}
+
+/* Set stopped-at timer, remove from running list, do counters & statistics */
+
+static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
+{
+ int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
+
+ if (!pkt_dev->running) {
+ printk("pktgen: interface: %s is already stopped\n",
+ pkt_dev->ifname);
+ return -EINVAL;
+ }
+
+ pkt_dev->stopped_at = getCurUs();
+ pkt_dev->running = 0;
+
+ show_results(pkt_dev, nr_frags);
+
+ return 0;
+}
+
+static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
+{
+ struct pktgen_dev *pkt_dev, *best = NULL;
+
+ if_lock(t);
+
+ list_for_each_entry(pkt_dev, &t->if_list, list) {
+ if (!pkt_dev->running)
+ continue;
+ if (best == NULL)
+ best = pkt_dev;
+ else if (pkt_dev->next_tx_us < best->next_tx_us)
+ best = pkt_dev;
+ }
+ if_unlock(t);
+ return best;
+}
+
+static void pktgen_stop(struct pktgen_thread *t)
+{
+ struct pktgen_dev *pkt_dev;
+
+ PG_DEBUG(printk("pktgen: entering pktgen_stop\n"));
+
+ if_lock(t);
+
+ list_for_each_entry(pkt_dev, &t->if_list, list) {
+ pktgen_stop_device(pkt_dev);
+ if (pkt_dev->skb)
+ kfree_skb(pkt_dev->skb);
+
+ pkt_dev->skb = NULL;
+ }
+
+ if_unlock(t);
+}
+
+/*
+ * one of our devices needs to be removed - find it
+ * and remove it
+ */
+static void pktgen_rem_one_if(struct pktgen_thread *t)
+{
+ struct list_head *q, *n;
+ struct pktgen_dev *cur;
+
+ PG_DEBUG(printk("pktgen: entering pktgen_rem_one_if\n"));
+
+ if_lock(t);
+
+ list_for_each_safe(q, n, &t->if_list) {
+ cur = list_entry(q, struct pktgen_dev, list);
+
+ if (!cur->removal_mark)
+ continue;
+
+ if (cur->skb)
+ kfree_skb(cur->skb);
+ cur->skb = NULL;
+
+ pktgen_remove_device(t, cur);
+
+ break;
+ }
+
+ if_unlock(t);
+}
+
+static void pktgen_rem_all_ifs(struct pktgen_thread *t)
+{
+ struct list_head *q, *n;
+ struct pktgen_dev *cur;
+
+ /* Remove all devices, free mem */
+
+ PG_DEBUG(printk("pktgen: entering pktgen_rem_all_ifs\n"));
+ if_lock(t);
+
+ list_for_each_safe(q, n, &t->if_list) {
+ cur = list_entry(q, struct pktgen_dev, list);
+
+ if (cur->skb)
+ kfree_skb(cur->skb);
+ cur->skb = NULL;
+
+ pktgen_remove_device(t, cur);
+ }
+
+ if_unlock(t);
+}
+
+static void pktgen_rem_thread(struct pktgen_thread *t)
+{
+ /* Remove from the thread list */
+
+ remove_proc_entry(t->name, pg_proc_dir);
+
+ mutex_lock(&pktgen_thread_lock);
+
+ list_del(&t->th_list);
+
+ mutex_unlock(&pktgen_thread_lock);
+}
+
+static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev)
+{
+ struct net_device *odev = NULL;
+ __u64 idle_start = 0;
+ int ret;
+
+ odev = pkt_dev->odev;
+
+ if (pkt_dev->delay_us || pkt_dev->delay_ns) {
+ u64 now;
+
+ now = getCurUs();
+ if (now < pkt_dev->next_tx_us)
+ spin(pkt_dev, pkt_dev->next_tx_us);
+
+ /* This is max DELAY, this has special meaning of
+ * "never transmit"
+ */
+ if (pkt_dev->delay_us == 0x7FFFFFFF) {
+ pkt_dev->next_tx_us = getCurUs() + pkt_dev->delay_us;
+ pkt_dev->next_tx_ns = pkt_dev->delay_ns;
+ goto out;
+ }
+ }
+
+ if (netif_queue_stopped(odev) || need_resched()) {
+ idle_start = getCurUs();
+
+ if (!netif_running(odev)) {
+ pktgen_stop_device(pkt_dev);
+ if (pkt_dev->skb)
+ kfree_skb(pkt_dev->skb);
+ pkt_dev->skb = NULL;
+ goto out;
+ }
+ if (need_resched())
+ schedule();
+
+ pkt_dev->idle_acc += getCurUs() - idle_start;
+
+ if (netif_queue_stopped(odev)) {
+ pkt_dev->next_tx_us = getCurUs(); /* TODO */
+ pkt_dev->next_tx_ns = 0;
+ goto out; /* Try the next interface */
+ }
+ }
+
+ if (pkt_dev->last_ok || !pkt_dev->skb) {
+ if ((++pkt_dev->clone_count >= pkt_dev->clone_skb)
+ || (!pkt_dev->skb)) {
+ /* build a new pkt */
+ if (pkt_dev->skb)
+ kfree_skb(pkt_dev->skb);
+
+ pkt_dev->skb = fill_packet(odev, pkt_dev);
+ if (pkt_dev->skb == NULL) {
+ printk("pktgen: ERROR: couldn't allocate skb in fill_packet.\n");
+ schedule();
+ pkt_dev->clone_count--; /* back out increment, OOM */
+ goto out;
+ }
+ pkt_dev->allocated_skbs++;
+ pkt_dev->clone_count = 0; /* reset counter */
+ }
+ }
+
+ spin_lock_bh(&odev->xmit_lock);
+ if (!netif_queue_stopped(odev)) {
+
+ atomic_inc(&(pkt_dev->skb->users));
+ retry_now:
+ ret = odev->hard_start_xmit(pkt_dev->skb, odev);
+ if (likely(ret == NETDEV_TX_OK)) {
+ pkt_dev->last_ok = 1;
+ pkt_dev->sofar++;
+ pkt_dev->seq_num++;
+ pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
+
+ } else if (ret == NETDEV_TX_LOCKED
+ && (odev->features & NETIF_F_LLTX)) {
+ cpu_relax();
+ goto retry_now;
+ } else { /* Retry it next time */
+
+ atomic_dec(&(pkt_dev->skb->users));
+
+ if (debug && net_ratelimit())
+ printk(KERN_INFO "pktgen: Hard xmit error\n");
+
+ pkt_dev->errors++;
+ pkt_dev->last_ok = 0;
+ }
+
+ pkt_dev->next_tx_us = getCurUs();
+ pkt_dev->next_tx_ns = 0;
+
+ pkt_dev->next_tx_us += pkt_dev->delay_us;
+ pkt_dev->next_tx_ns += pkt_dev->delay_ns;
+
+ if (pkt_dev->next_tx_ns > 1000) {
+ pkt_dev->next_tx_us++;
+ pkt_dev->next_tx_ns -= 1000;
+ }
+ }
+
+ else { /* Retry it next time */
+ pkt_dev->last_ok = 0;
+ pkt_dev->next_tx_us = getCurUs(); /* TODO */
+ pkt_dev->next_tx_ns = 0;
+ }
+
+ spin_unlock_bh(&odev->xmit_lock);
+
+ /* If pkt_dev->count is zero, then run forever */
+ if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
+ if (atomic_read(&(pkt_dev->skb->users)) != 1) {
+ idle_start = getCurUs();
+ while (atomic_read(&(pkt_dev->skb->users)) != 1) {
+ if (signal_pending(current)) {
+ break;
+ }
+ schedule();
+ }
+ pkt_dev->idle_acc += getCurUs() - idle_start;
+ }
+
+ /* Done with this */
+ pktgen_stop_device(pkt_dev);
+ if (pkt_dev->skb)
+ kfree_skb(pkt_dev->skb);
+ pkt_dev->skb = NULL;
+ }
+out:;
+}
+
+/*
+ * Main loop of the thread goes here
+ */
+
+static void pktgen_thread_worker(struct pktgen_thread *t)
+{
+ DEFINE_WAIT(wait);
+ struct pktgen_dev *pkt_dev = NULL;
+ int cpu = t->cpu;
+ sigset_t tmpsig;
+ u32 max_before_softirq;
+ u32 tx_since_softirq = 0;
+
+ daemonize("pktgen/%d", cpu);
+
+ /* Block all signals except SIGKILL, SIGSTOP and SIGTERM */
+
+ spin_lock_irq(¤t->sighand->siglock);
+ tmpsig = current->blocked;
+ siginitsetinv(¤t->blocked,
+ sigmask(SIGKILL) | sigmask(SIGSTOP) | sigmask(SIGTERM));
+
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ /* Migrate to the right CPU */
+ set_cpus_allowed(current, cpumask_of_cpu(cpu));
+ if (smp_processor_id() != cpu)
+ BUG();
+
+ init_waitqueue_head(&t->queue);
+
+ t->control &= ~(T_TERMINATE);
+ t->control &= ~(T_RUN);
+ t->control &= ~(T_STOP);
+ t->control &= ~(T_REMDEVALL);
+ t->control &= ~(T_REMDEV);
+
+ t->pid = current->pid;
+
+ PG_DEBUG(printk("pktgen: starting pktgen/%d: pid=%d\n", cpu, current->pid));
+
+ max_before_softirq = t->max_before_softirq;
+
+ __set_current_state(TASK_INTERRUPTIBLE);
+ mb();
+
+ while (1) {
+
+ __set_current_state(TASK_RUNNING);
+
+ /*
+ * Get next dev to xmit -- if any.
+ */
+
+ pkt_dev = next_to_run(t);
+
+ if (pkt_dev) {
+
+ pktgen_xmit(pkt_dev);
+
+ /*
+ * We like to stay RUNNING but must also give
+ * others fair share.
+ */
+
+ tx_since_softirq += pkt_dev->last_ok;
+
+ if (tx_since_softirq > max_before_softirq) {
+ if (local_softirq_pending())
+ do_softirq();
+ tx_since_softirq = 0;
+ }
+ } else {
+ prepare_to_wait(&(t->queue), &wait, TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ / 10);
+ finish_wait(&(t->queue), &wait);
+ }
+
+ /*
+ * Back from sleep, either due to the timeout or signal.
+ * We check if we have any "posted" work for us.
+ */
+
+ if (t->control & T_TERMINATE || signal_pending(current))
+ /* we received a request to terminate ourself */
+ break;
+
+ if (t->control & T_STOP) {
+ pktgen_stop(t);
+ t->control &= ~(T_STOP);
+ }
+
+ if (t->control & T_RUN) {
+ pktgen_run(t);
+ t->control &= ~(T_RUN);
+ }
+
+ if (t->control & T_REMDEVALL) {
+ pktgen_rem_all_ifs(t);
+ t->control &= ~(T_REMDEVALL);
+ }
+
+ if (t->control & T_REMDEV) {
+ pktgen_rem_one_if(t);
+ t->control &= ~(T_REMDEV);
+ }
+
+ if (need_resched())
+ schedule();
+ }
+
+ PG_DEBUG(printk("pktgen: %s stopping all device\n", t->name));
+ pktgen_stop(t);
+
+ PG_DEBUG(printk("pktgen: %s removing all device\n", t->name));
+ pktgen_rem_all_ifs(t);
+
+ PG_DEBUG(printk("pktgen: %s removing thread.\n", t->name));
+ pktgen_rem_thread(t);
+
+ t->removed = 1;
+}
+
+static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
+ const char *ifname)
+{
+ struct pktgen_dev *p, *pkt_dev = NULL;
+ if_lock(t);
+
+ list_for_each_entry(p, &t->if_list, list)
+ if (strncmp(p->ifname, ifname, IFNAMSIZ) == 0) {
+ pkt_dev = p;
+ break;
+ }
+
+ if_unlock(t);
+ PG_DEBUG(printk("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev));
+ return pkt_dev;
+}
+
+/*
+ * Adds a dev at front of if_list.
+ */
+
+static int add_dev_to_thread(struct pktgen_thread *t,
+ struct pktgen_dev *pkt_dev)
+{
+ int rv = 0;
+
+ if_lock(t);
+
+ if (pkt_dev->pg_thread) {
+ printk("pktgen: ERROR: already assigned to a thread.\n");
+ rv = -EBUSY;
+ goto out;
+ }
+
+ list_add(&pkt_dev->list, &t->if_list);
+ pkt_dev->pg_thread = t;
+ pkt_dev->running = 0;
+
+out:
+ if_unlock(t);
+ return rv;
+}
+
+/* Called under thread lock */
+
+static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
+{
+ struct pktgen_dev *pkt_dev;
+ struct proc_dir_entry *pe;
+
+ /* We don't allow a device to be on several threads */
+
+ pkt_dev = __pktgen_NN_threads(ifname, FIND);
+ if (pkt_dev) {
+ printk("pktgen: ERROR: interface already used.\n");
+ return -EBUSY;
+ }
+
+ pkt_dev = kzalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
+ if (!pkt_dev)
+ return -ENOMEM;
+
+ pkt_dev->flows = vmalloc(MAX_CFLOWS * sizeof(struct flow_state));
+ if (pkt_dev->flows == NULL) {
+ kfree(pkt_dev);
+ return -ENOMEM;
+ }
+ memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
+
+ pkt_dev->removal_mark = 0;
+ pkt_dev->min_pkt_size = ETH_ZLEN;
+ pkt_dev->max_pkt_size = ETH_ZLEN;
+ pkt_dev->nfrags = 0;
+ pkt_dev->clone_skb = pg_clone_skb_d;
+ pkt_dev->delay_us = pg_delay_d / 1000;
+ pkt_dev->delay_ns = pg_delay_d % 1000;
+ pkt_dev->count = pg_count_d;
+ pkt_dev->sofar = 0;
+ pkt_dev->udp_src_min = 9; /* sink port */
+ pkt_dev->udp_src_max = 9;
+ pkt_dev->udp_dst_min = 9;
+ pkt_dev->udp_dst_max = 9;
+
+ strncpy(pkt_dev->ifname, ifname, IFNAMSIZ);
+
+ if (!pktgen_setup_dev(pkt_dev)) {
+ printk("pktgen: ERROR: pktgen_setup_dev failed.\n");
+ if (pkt_dev->flows)
+ vfree(pkt_dev->flows);
+ kfree(pkt_dev);
+ return -ENODEV;
+ }
+
+ pe = create_proc_entry(ifname, 0600, pg_proc_dir);
+ if (!pe) {
+ printk("pktgen: cannot create %s/%s procfs entry.\n",
+ PG_PROC_DIR, ifname);
+ if (pkt_dev->flows)
+ vfree(pkt_dev->flows);
+ kfree(pkt_dev);
+ return -EINVAL;
+ }
+ pe->proc_fops = &pktgen_if_fops;
+ pe->data = pkt_dev;
+
+ return add_dev_to_thread(t, pkt_dev);
+}
+
+static struct pktgen_thread *__init pktgen_find_thread(const char *name)
+{
+ struct pktgen_thread *t;
+
+ mutex_lock(&pktgen_thread_lock);
+
+ list_for_each_entry(t, &pktgen_threads, th_list)
+ if (strcmp(t->name, name) == 0) {
+ mutex_unlock(&pktgen_thread_lock);
+ return t;
+ }
+
+ mutex_unlock(&pktgen_thread_lock);
+ return NULL;
+}
+
+static int __init pktgen_create_thread(const char *name, int cpu)
+{
+ int err;
+ struct pktgen_thread *t = NULL;
+ struct proc_dir_entry *pe;
+
+ if (strlen(name) > 31) {
+ printk("pktgen: ERROR: Thread name cannot be more than 31 characters.\n");
+ return -EINVAL;
+ }
+
+ if (pktgen_find_thread(name)) {
+ printk("pktgen: ERROR: thread: %s already exists\n", name);
+ return -EINVAL;
+ }
+
+ t = kzalloc(sizeof(struct pktgen_thread), GFP_KERNEL);
+ if (!t) {
+ printk("pktgen: ERROR: out of memory, can't create new thread.\n");
+ return -ENOMEM;
+ }
+
+ strcpy(t->name, name);
+ spin_lock_init(&t->if_lock);
+ t->cpu = cpu;
+
+ pe = create_proc_entry(t->name, 0600, pg_proc_dir);
+ if (!pe) {
+ printk("pktgen: cannot create %s/%s procfs entry.\n",
+ PG_PROC_DIR, t->name);
+ kfree(t);
+ return -EINVAL;
+ }
+
+ pe->proc_fops = &pktgen_thread_fops;
+ pe->data = t;
+
+ INIT_LIST_HEAD(&t->if_list);
+
+ list_add_tail(&t->th_list, &pktgen_threads);
+
+ t->removed = 0;
+
+ err = kernel_thread((void *)pktgen_thread_worker, (void *)t,
+ CLONE_FS | CLONE_FILES | CLONE_SIGHAND);
+ if (err < 0) {
+ printk("pktgen: kernel_thread() failed for cpu %d\n", t->cpu);
+ remove_proc_entry(t->name, pg_proc_dir);
+ list_del(&t->th_list);
+ kfree(t);
+ return err;
+ }
+
+ return 0;
+}
+
+/*
+ * Removes a device from the thread if_list.
+ */
+static void _rem_dev_from_if_list(struct pktgen_thread *t,
+ struct pktgen_dev *pkt_dev)
+{
+ struct list_head *q, *n;
+ struct pktgen_dev *p;
+
+ list_for_each_safe(q, n, &t->if_list) {
+ p = list_entry(q, struct pktgen_dev, list);
+ if (p == pkt_dev)
+ list_del(&p->list);
+ }
+}
+
+static int pktgen_remove_device(struct pktgen_thread *t,
+ struct pktgen_dev *pkt_dev)
+{
+
+ PG_DEBUG(printk("pktgen: remove_device pkt_dev=%p\n", pkt_dev));
+
+ if (pkt_dev->running) {
+ printk("pktgen:WARNING: trying to remove a running interface, stopping it now.\n");
+ pktgen_stop_device(pkt_dev);
+ }
+
+ /* Dis-associate from the interface */
+
+ if (pkt_dev->odev) {
+ dev_put(pkt_dev->odev);
+ pkt_dev->odev = NULL;
+ }
+
+ /* And update the thread if_list */
+
+ _rem_dev_from_if_list(t, pkt_dev);
+
+ /* Clean up proc file system */
+
+ remove_proc_entry(pkt_dev->ifname, pg_proc_dir);
+
+ if (pkt_dev->flows)
+ vfree(pkt_dev->flows);
+ kfree(pkt_dev);
+ return 0;
+}
+
+static int __init pg_init(void)
+{
+ int cpu;
+ struct proc_dir_entry *pe;
+
+ printk(version);
+
+ pg_proc_dir = proc_mkdir(PG_PROC_DIR, proc_net);
+ if (!pg_proc_dir)
+ return -ENODEV;
+ pg_proc_dir->owner = THIS_MODULE;
+
+ pe = create_proc_entry(PGCTRL, 0600, pg_proc_dir);
+ if (pe == NULL) {
+ printk("pktgen: ERROR: cannot create %s procfs entry.\n",
+ PGCTRL);
+ proc_net_remove(PG_PROC_DIR);
+ return -EINVAL;
+ }
+
+ pe->proc_fops = &pktgen_fops;
+ pe->data = NULL;
+
+ /* Register us to receive netdevice events */
+ register_netdevice_notifier(&pktgen_notifier_block);
+
+ for_each_online_cpu(cpu) {
+ int err;
+ char buf[30];
+
+ sprintf(buf, "kpktgend_%i", cpu);
+ err = pktgen_create_thread(buf, cpu);
+ if (err)
+ printk("pktgen: WARNING: Cannot create thread for cpu %d (%d)\n",
+ cpu, err);
+ }
+
+ if (list_empty(&pktgen_threads)) {
+ printk("pktgen: ERROR: Initialization failed for all threads\n");
+ unregister_netdevice_notifier(&pktgen_notifier_block);
+ remove_proc_entry(PGCTRL, pg_proc_dir);
+ proc_net_remove(PG_PROC_DIR);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit pg_cleanup(void)
+{
+ struct pktgen_thread *t;
+ struct list_head *q, *n;
+ wait_queue_head_t queue;
+ init_waitqueue_head(&queue);
+
+ /* Stop all interfaces & threads */
+
+ list_for_each_safe(q, n, &pktgen_threads) {
+ t = list_entry(q, struct pktgen_thread, th_list);
+ t->control |= (T_TERMINATE);
+
+ wait_event_interruptible_timeout(queue, (t->removed == 1), HZ);
+ }
+
+ /* Un-register us from receiving netdevice events */
+ unregister_netdevice_notifier(&pktgen_notifier_block);
+
+ /* Clean up proc file system */
+ remove_proc_entry(PGCTRL, pg_proc_dir);
+ proc_net_remove(PG_PROC_DIR);
}
-module_init(init);
-module_exit(cleanup);
+module_init(pg_init);
+module_exit(pg_cleanup);
MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
MODULE_DESCRIPTION("Packet Generator tool");
MODULE_LICENSE("GPL");
-MODULE_PARM(count_d, "i");
-MODULE_PARM(ipg_d, "i");
-MODULE_PARM(cpu_speed, "i");
-MODULE_PARM(clone_skb_d, "i");
+module_param(pg_count_d, int, 0);
+module_param(pg_delay_d, int, 0);
+module_param(pg_clone_skb_d, int, 0);
+module_param(debug, int, 0);
git://git.onelab.eu / linux-2.6.git / blobdiff