| /* |
| * Authors: |
| * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se> |
| * 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, 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. |
| * |
| * Additional hacking by: |
| * |
| * Jens.Laas@data.slu.se |
| * Improved by ANK. 010120. |
| * Improved by ANK even more. 010212. |
| * MAC address typo fixed. 010417 --ro |
| * Integrated. 020301 --DaveM |
| * Added multiskb option 020301 --DaveM |
| * Scaling of results. 020417--sigurdur@linpro.no |
| * Significant re-work of the module: |
| * * 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 most values after starting. |
| * * Place 12-byte packet in UDP payload with magic number, |
| * 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> |
| * |
| * 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 |
| * |
| * 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 pratical 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 |
| * |
| * Rany 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 |
| */ |
| #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/sched.h> |
| #include <linux/slab.h> |
| #include <linux/vmalloc.h> |
| #include <linux/sched.h> |
| #include <linux/unistd.h> |
| #include <linux/string.h> |
| #include <linux/ptrace.h> |
| #include <linux/errno.h> |
| #include <linux/ioport.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/timer.h> |
| #include <linux/init.h> |
| #include <linux/skbuff.h> |
| #include <linux/netdevice.h> |
| #include <linux/inet.h> |
| #include <linux/inetdevice.h> |
| #include <linux/rtnetlink.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/wait.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 VERSION "pktgen v2.62: 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 |
| |
| /* 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 */ |
| |
| /* 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_REMDEV (1<<3) /* Remove all devs */ |
| |
| /* Locks */ |
| #define thread_lock() spin_lock(&_thread_lock) |
| #define thread_unlock() spin_unlock(&_thread_lock) |
| |
| /* 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 "net/pktgen" |
| |
| #define MAX_CFLOWS 65536 |
| |
| struct flow_state |
| { |
| __u32 cur_daddr; |
| int count; |
| }; |
| |
| struct pktgen_dev { |
| |
| /* |
| * Try to keep frequent/infrequent used vars. separated. |
| */ |
| |
| char ifname[32]; |
| struct proc_dir_entry *proc_ent; |
| char result[512]; |
| /* proc file names */ |
| char fname[80]; |
| |
| struct pktgen_thread* pg_thread; /* the owner */ |
| struct pktgen_dev *next; /* Used for chaining in the thread's run-queue */ |
| |
| 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; |
| |
| int min_pkt_size; /* = ETH_ZLEN; */ |
| int max_pkt_size; /* = ETH_ZLEN; */ |
| int nfrags; |
| __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. |
| */ |
| |
| 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 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, |
| |
| 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 */ |
| |
| 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 pgh_magic; |
| __u32 seq_num; |
| __u32 tv_sec; |
| __u32 tv_usec; |
| }; |
| |
| struct pktgen_thread { |
| spinlock_t if_lock; |
| struct pktgen_dev *if_list; /* All device here */ |
| struct pktgen_thread* next; |
| char name[32]; |
| char fname[128]; /* name of proc file */ |
| struct proc_dir_entry *proc_ent; |
| char result[512]; |
| u32 max_before_softirq; /* We'll call do_softirq to prevent starvation. */ |
| |
| /* 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 |
| |
| /* 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) |
| { |
| __u64 ms = tv->tv_usec / 1000; |
| ms += (__u64)tv->tv_sec * (__u64)1000; |
| return ms; |
| } |
| |
| |
| /** 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 architectrure 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); |
| } |
| |
| static inline __u64 getCurUs(void) |
| { |
| struct timeval tv; |
| do_gettimeofday(&tv); |
| return tv_to_us(&tv); |
| } |
| |
| static inline __u64 tv_diff(const struct timeval* a, const struct timeval* b) |
| { |
| return tv_to_us(a) - tv_to_us(b); |
| } |
| |
| |
| /* old include end */ |
| |
| static char version[] __initdata = VERSION; |
| |
| static ssize_t proc_pgctrl_read(struct file* file, char __user * buf, size_t count, loff_t *ppos); |
| static ssize_t proc_pgctrl_write(struct file* file, const char __user * buf, size_t count, loff_t *ppos); |
| static int proc_if_read(char *buf , char **start, off_t offset, int len, int *eof, void *data); |
| |
| static int proc_thread_read(char *buf , char **start, off_t offset, int len, int *eof, void *data); |
| static int proc_if_write(struct file *file, const char __user *user_buffer, unsigned long count, void *data); |
| static int proc_thread_write(struct file *file, const char __user *user_buffer, unsigned long count, void *data); |
| static int create_proc_dir(void); |
| static int remove_proc_dir(void); |
| |
| 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_thread* pktgen_find_thread(const char* name); |
| 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 struct pktgen_dev *pktgen_NN_threads(const char* dev_name, int remove); |
| static unsigned int scan_ip6(const char *s,char ip[16]); |
| static unsigned int fmt_ip6(char *s,const char ip[16]); |
| |
| /* Module parameters, defaults. */ |
| static int pg_count_d = 1000; /* 1000 pkts by default */ |
| static int pg_delay_d = 0; |
| static int pg_clone_skb_d = 0; |
| static int debug = 0; |
| |
| static DEFINE_SPINLOCK(_thread_lock); |
| static struct pktgen_thread *pktgen_threads = NULL; |
| |
| static char module_fname[128]; |
| static struct proc_dir_entry *module_proc_ent = NULL; |
| |
| static struct notifier_block pktgen_notifier_block = { |
| .notifier_call = pktgen_device_event, |
| }; |
| |
| static struct file_operations pktgen_fops = { |
| .read = proc_pgctrl_read, |
| .write = proc_pgctrl_write, |
| /* .ioctl = pktgen_ioctl, later maybe */ |
| }; |
| |
| /* |
| * /proc handling functions |
| * |
| */ |
| |
| static struct proc_dir_entry *pg_proc_dir = NULL; |
| static int proc_pgctrl_read_eof=0; |
| |
| static ssize_t proc_pgctrl_read(struct file* file, char __user * buf, |
| size_t count, loff_t *ppos) |
| { |
| char data[200]; |
| int len = 0; |
| |
| if(proc_pgctrl_read_eof) { |
| proc_pgctrl_read_eof=0; |
| len = 0; |
| goto out; |
| } |
| |
| sprintf(data, "%s", VERSION); |
| |
| len = strlen(data); |
| |
| if(len > count) { |
| len =-EFAULT; |
| goto out; |
| } |
| |
| if (copy_to_user(buf, data, len)) { |
| len =-EFAULT; |
| goto out; |
| } |
| |
| *ppos += len; |
| proc_pgctrl_read_eof=1; /* EOF next call */ |
| |
| out: |
| return len; |
| } |
| |
| static ssize_t proc_pgctrl_write(struct file* file,const char __user * buf, |
| size_t count, loff_t *ppos) |
| { |
| char *data = NULL; |
| int err = 0; |
| |
| if (!capable(CAP_NET_ADMIN)){ |
| err = -EPERM; |
| goto out; |
| } |
| |
| data = (void*)vmalloc ((unsigned int)count); |
| |
| if(!data) { |
| err = -ENOMEM; |
| goto out; |
| } |
| if (copy_from_user(data, buf, count)) { |
| err =-EFAULT; |
| goto out_free; |
| } |
| 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_free: |
| vfree (data); |
| out: |
| return err; |
| } |
| |
| static int proc_if_read(char *buf , char **start, off_t offset, |
| int len, int *eof, void *data) |
| { |
| char *p; |
| int i; |
| struct pktgen_dev *pkt_dev = (struct pktgen_dev*)(data); |
| __u64 sa; |
| __u64 stopped; |
| __u64 now = getCurUs(); |
| |
| p = buf; |
| p += sprintf(p, "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); |
| |
| p += sprintf(p, " 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); |
| |
| p += sprintf(p, " 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); |
| p += sprintf(p, " 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); |
| p += sprintf(p, " daddr: %s min_daddr: %s max_daddr: %s\n", b1, b2, b3); |
| |
| } |
| else |
| p += sprintf(p, " 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); |
| |
| p += sprintf(p, " src_mac: "); |
| |
| if ((pkt_dev->src_mac[0] == 0) && |
| (pkt_dev->src_mac[1] == 0) && |
| (pkt_dev->src_mac[2] == 0) && |
| (pkt_dev->src_mac[3] == 0) && |
| (pkt_dev->src_mac[4] == 0) && |
| (pkt_dev->src_mac[5] == 0)) |
| |
| for (i = 0; i < 6; i++) |
| p += sprintf(p, "%02X%s", pkt_dev->odev->dev_addr[i], i == 5 ? " " : ":"); |
| |
| else |
| for (i = 0; i < 6; i++) |
| p += sprintf(p, "%02X%s", pkt_dev->src_mac[i], i == 5 ? " " : ":"); |
| |
| p += sprintf(p, "dst_mac: "); |
| for (i = 0; i < 6; i++) |
| p += sprintf(p, "%02X%s", pkt_dev->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", |
| pkt_dev->udp_src_min, pkt_dev->udp_src_max, pkt_dev->udp_dst_min, |
| pkt_dev->udp_dst_max); |
| |
| p += sprintf(p, " src_mac_count: %d dst_mac_count: %d \n Flags: ", |
| pkt_dev->src_mac_count, pkt_dev->dst_mac_count); |
| |
| |
| if (pkt_dev->flags & F_IPV6) |
| p += sprintf(p, "IPV6 "); |
| |
| if (pkt_dev->flags & F_IPSRC_RND) |
| p += sprintf(p, "IPSRC_RND "); |
| |
| if (pkt_dev->flags & F_IPDST_RND) |
| p += sprintf(p, "IPDST_RND "); |
| |
| if (pkt_dev->flags & F_TXSIZE_RND) |
| p += sprintf(p, "TXSIZE_RND "); |
| |
| if (pkt_dev->flags & F_UDPSRC_RND) |
| p += sprintf(p, "UDPSRC_RND "); |
| |
| if (pkt_dev->flags & F_UDPDST_RND) |
| p += sprintf(p, "UDPDST_RND "); |
| |
| if (pkt_dev->flags & F_MACSRC_RND) |
| p += sprintf(p, "MACSRC_RND "); |
| |
| if (pkt_dev->flags & F_MACDST_RND) |
| p += sprintf(p, "MACDST_RND "); |
| |
| |
| p += sprintf(p, "\n"); |
| |
| sa = pkt_dev->started_at; |
| stopped = pkt_dev->stopped_at; |
| if (pkt_dev->running) |
| stopped = now; /* not really stopped, more like last-running-at */ |
| |
| p += sprintf(p, "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); |
| |
| p += sprintf(p, " 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); |
| |
| 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); |
| p += sprintf(p, " cur_saddr: %s cur_daddr: %s\n", b2, b1); |
| } |
| else |
| p += sprintf(p, " cur_saddr: 0x%x cur_daddr: 0x%x\n", |
| pkt_dev->cur_saddr, pkt_dev->cur_daddr); |
| |
| |
| p += sprintf(p, " cur_udp_dst: %d cur_udp_src: %d\n", |
| pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); |
| |
| p += sprintf(p, " flows: %u\n", pkt_dev->nflows); |
| |
| if (pkt_dev->result[0]) |
| p += sprintf(p, "Result: %s\n", pkt_dev->result); |
| else |
| p += sprintf(p, "Result: Idle\n"); |
| *eof = 1; |
| |
| return p - buf; |
| } |
| |
| |
| 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) { |
| case '\"': |
| case '\n': |
| case '\r': |
| case '\t': |
| case ' ': |
| case '=': |
| break; |
| default: |
| goto done; |
| }; |
| } |
| done: |
| return i; |
| } |
| |
| 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; |
| if (get_user(c, &user_buffer[i])) |
| return -EFAULT; |
| if ((c >= '0') && (c <= '9')) { |
| *num *= 10; |
| *num += c -'0'; |
| } else |
| break; |
| } |
| return i; |
| } |
| |
| static int strn_len(const char __user *user_buffer, unsigned int maxlen) |
| { |
| int i = 0; |
| |
| for(; i < maxlen; i++) { |
| char c; |
| if (get_user(c, &user_buffer[i])) |
| return -EFAULT; |
| switch (c) { |
| case '\"': |
| case '\n': |
| case '\r': |
| case '\t': |
| case ' ': |
| goto done_str; |
| break; |
| default: |
| break; |
| }; |
| } |
| done_str: |
| |
| return i; |
| } |
| |
| static int proc_if_write(struct file *file, const char __user *user_buffer, |
| unsigned long count, void *data) |
| { |
| int i = 0, max, len; |
| char name[16], valstr[32]; |
| unsigned long value = 0; |
| struct pktgen_dev *pkt_dev = (struct pktgen_dev*)(data); |
| char* pg_result = NULL; |
| int tmp = 0; |
| char buf[128]; |
| |
| pg_result = &(pkt_dev->result[0]); |
| |
| if (count < 1) { |
| printk("pktgen: wrong command format\n"); |
| return -EINVAL; |
| } |
| |
| max = count - i; |
| tmp = count_trail_chars(&user_buffer[i], max); |
| 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) { 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) { |
| 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, count, tb); |
| } |
| |
| if (!strcmp(name, "min_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->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; |
| } |
| 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) { 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; |
| 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) { return len; } |
| i += len; |
| pkt_dev->nfrags = value; |
| sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); |
| return count; |
| } |
| if (!strcmp(name, "delay")) { |
| len = num_arg(&user_buffer[i], 10, &value); |
| if (len < 0) { return len; } |
| i += len; |
| 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")) { |
| len = num_arg(&user_buffer[i], 10, &value); |
| if (len < 0) { return len; } |
| i += len; |
| 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")) { |
| len = num_arg(&user_buffer[i], 10, &value); |
| if (len < 0) { return len; } |
| i += len; |
| 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")) { |
| len = num_arg(&user_buffer[i], 10, &value); |
| if (len < 0) { return len; } |
| i += len; |
| 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")) { |
| len = num_arg(&user_buffer[i], 10, &value); |
| if (len < 0) { return len; } |
| i += len; |
| 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) { return len; } |
| i += len; |
| 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) { return len; } |
| i += len; |
| 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) { return len; } |
| i += len; |
| 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; |
| 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) { return len; } |
| if (copy_from_user(f, &user_buffer[i], len)) |
| return -EFAULT; |
| i += len; |
| 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 { |
| sprintf(pg_result, "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s", |
| f, |
| "IPSRC_RND, IPDST_RND, TXSIZE_RND, UDPSRC_RND, UDPDST_RND, MACSRC_RND, MACDST_RND\n"); |
| return count; |
| } |
| 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(pkt_dev->dst_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->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(pg_result, "OK: dst_min=%s", pkt_dev->dst_min); |
| return count; |
| } |
| if (!strcmp(name, "dst_max")) { |
| len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_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->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(pg_result, "OK: dst_max=%s", pkt_dev->dst_max); |
| return count; |
| } |
| if (!strcmp(name, "dst6")) { |
| 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_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(pg_result, "OK: dst6=%s", buf); |
| return count; |
| } |
| if (!strcmp(name, "dst6_min")) { |
| 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->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(pg_result, "OK: src_max=%s", pkt_dev->src_max); |
| return count; |
| } |
| if (!strcmp(name, "dst_mac")) { |
| char *v = valstr; |
| unsigned char old_dmac[6]; |
| unsigned char *m = pkt_dev->dst_mac; |
| memcpy(old_dmac, pkt_dev->dst_mac, 6); |
| |
| len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
| 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 < pkt_dev->dst_mac + 6; v++) { |
| if (*v >= '0' && *v <= '9') { |
| *m *= 16; |
| *m += *v - '0'; |
| } |
| if (*v >= 'A' && *v <= 'F') { |
| *m *= 16; |
| *m += *v - 'A' + 10; |
| } |
| if (*v >= 'a' && *v <= 'f') { |
| *m *= 16; |
| *m += *v - 'a' + 10; |
| } |
| if (*v == ':') { |
| m++; |
| *m = 0; |
| } |
| } |
| |
| /* Set up Dest MAC */ |
| if (memcmp(old_dmac, pkt_dev->dst_mac, 6) != 0) |
| memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, 6); |
| |
| sprintf(pg_result, "OK: dstmac"); |
| return count; |
| } |
| if (!strcmp(name, "src_mac")) { |
| char *v = valstr; |
| unsigned char *m = pkt_dev->src_mac; |
| |
| len = strn_len(&user_buffer[i], sizeof(valstr) - 1); |
| 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 < pkt_dev->src_mac + 6; v++) { |
| if (*v >= '0' && *v <= '9') { |
| *m *= 16; |
| *m += *v - '0'; |
| } |
| if (*v >= 'A' && *v <= 'F') { |
| *m *= 16; |
| *m += *v - 'A' + 10; |
| } |
| if (*v >= 'a' && *v <= 'f') { |
| *m *= 16; |
| *m += *v - 'a' + 10; |
| } |
| if (*v == ':') { |
| m++; |
| *m = 0; |
| } |
| } |
| |
| 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, "flows")) { |
| len = num_arg(&user_buffer[i], 10, &value); |
| if (len < 0) { return len; } |
| 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; |
| } |
| |
| sprintf(pkt_dev->result, "No such parameter \"%s\"", name); |
| return -EINVAL; |
| } |
| |
| static int proc_thread_read(char *buf , char **start, off_t offset, |
| int len, int *eof, void *data) |
| { |
| char *p; |
| struct pktgen_thread *t = (struct pktgen_thread*)(data); |
| struct pktgen_dev *pkt_dev = NULL; |
| |
| |
| if (!t) { |
| printk("pktgen: ERROR: could not find thread in proc_thread_read\n"); |
| return -EINVAL; |
| } |
| |
| p = buf; |
| p += sprintf(p, "Name: %s max_before_softirq: %d\n", |
| t->name, t->max_before_softirq); |
| |
| p += sprintf(p, "Running: "); |
| |
| if_lock(t); |
| for(pkt_dev = t->if_list;pkt_dev; pkt_dev = pkt_dev->next) |
| if(pkt_dev->running) |
| p += sprintf(p, "%s ", pkt_dev->ifname); |
| |
| p += sprintf(p, "\nStopped: "); |
| |
| for(pkt_dev = t->if_list;pkt_dev; pkt_dev = pkt_dev->next) |
| if(!pkt_dev->running) |
| p += sprintf(p, "%s ", pkt_dev->ifname); |
| |
| if (t->result[0]) |
| p += sprintf(p, "\nResult: %s\n", t->result); |
| else |
| p += sprintf(p, "\nResult: NA\n"); |
| |
| *eof = 1; |
| |
| if_unlock(t); |
| |
| return p - buf; |
| } |
| |
| static int proc_thread_write(struct file *file, const char __user *user_buffer, |
| unsigned long count, void *data) |
| { |
| int i = 0, max, len, ret; |
| char name[40]; |
| struct pktgen_thread *t; |
| 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, count); |
| |
| |
| t = (struct pktgen_thread*)(data); |
| 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; |
| thread_lock(); |
| pktgen_add_device(t, f); |
| thread_unlock(); |
| ret = count; |
| sprintf(pg_result, "OK: add_device=%s", f); |
| goto out; |
| } |
| |
| if (!strcmp(name, "rem_device_all")) { |
| thread_lock(); |
| t->control |= T_REMDEV; |
| thread_unlock(); |
| 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); |
| thread_lock(); |
| t->max_before_softirq = value; |
| thread_unlock(); |
| ret = count; |
| sprintf(pg_result, "OK: max_before_softirq=%lu", value); |
| goto out; |
| } |
| |
| ret = -EINVAL; |
| out: |
| |
| return ret; |
| } |
| |
| static int create_proc_dir(void) |
| { |
| pg_proc_dir = proc_mkdir(PG_PROC_DIR, NULL); |
| |
| if (!pg_proc_dir) |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| static int remove_proc_dir(void) |
| { |
| remove_proc_entry(PG_PROC_DIR, NULL); |
| return 0; |
| } |
| |
| /* Think find or remove for NN */ |
| static struct pktgen_dev *__pktgen_NN_threads(const char* ifname, int remove) |
| { |
| struct pktgen_thread *t; |
| struct pktgen_dev *pkt_dev = NULL; |
| |
| t = pktgen_threads; |
| |
| while (t) { |
| pkt_dev = pktgen_find_dev(t, ifname); |
| if (pkt_dev) { |
| if(remove) { |
| if_lock(t); |
| pktgen_remove_device(t, pkt_dev); |
| if_unlock(t); |
| } |
| break; |
| } |
| t = t->next; |
| } |
| return pkt_dev; |
| } |
| |
| static struct pktgen_dev *pktgen_NN_threads(const char* ifname, int remove) |
| { |
| struct pktgen_dev *pkt_dev = NULL; |
| thread_lock(); |
| pkt_dev = __pktgen_NN_threads(ifname, remove); |
| thread_unlock(); |
| return pkt_dev; |
| } |
| |
| static int pktgen_device_event(struct notifier_block *unused, unsigned long event, void *ptr) |
| { |
| 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_NN_threads(dev->name, REMOVE); |
| 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; |
| } |
| |
| odev = dev_get_by_name(pkt_dev->ifname); |
| |
| if (!odev) { |
| printk("pktgen: no such netdevice: \"%s\"\n", pkt_dev->ifname); |
| goto out; |
| } |
| 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 ((pkt_dev->src_mac[0] == 0) && |
| (pkt_dev->src_mac[1] == 0) && |
| (pkt_dev->src_mac[2] == 0) && |
| (pkt_dev->src_mac[3] == 0) && |
| (pkt_dev->src_mac[4] == 0) && |
| (pkt_dev->src_mac[5] == 0)) { |
| |
| memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, 6); |
| } |
| /* Set up Dest MAC */ |
| memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, 6); |
| |
| /* 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"); |
| } |
| #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); |
| } |
| /* 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 spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us) |
| { |
| __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: optimise 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(); |
| } |
| |
| 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; |
| } |
| |
| /* 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->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 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; |
| |
| /* 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, 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); |
| 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*)ð[12] = __constant_htons(ETH_P_IP); |
| |
| datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8; /* Eth + IPh + UDPh */ |
| 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 = __constant_htons(ETH_P_IP); |
| skb->mac.raw = ((u8 *)iph) - 14; |
| 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; |
| |
| /* 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, 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); |
| 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*)ð[12] = __constant_htons(ETH_P_IPV6); |
| |
| datalen = pkt_dev->cur_pkt_size-14- |
| sizeof(struct ipv6hdr)-sizeof(struct udphdr); /* Eth + IPh + UDPh */ |
| |
| 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; |
| skb->protocol = __constant_htons(ETH_P_IPV6); |
| 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 = NULL; |
| int started = 0; |
| |
| PG_DEBUG(printk("pktgen: entering pktgen_run. %p\n", t)); |
| |
| if_lock(t); |
| for (pkt_dev = t->if_list; pkt_dev; pkt_dev = pkt_dev->next ) { |
| |
| /* |
| * 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 = pktgen_threads; |
| |
| PG_DEBUG(printk("pktgen: entering pktgen_stop_all_threads.\n")); |
| |
| thread_lock(); |
| while(t) { |
| pktgen_stop(t); |
| t = t->next; |
| } |
| thread_unlock(); |
| } |
| |
| static int thread_is_running(struct pktgen_thread *t ) |
| { |
| struct pktgen_dev *next; |
| int res = 0; |
| |
| for(next=t->if_list; next; next=next->next) { |
| if(next->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 = pktgen_threads; |
| int sig = 1; |
| |
| while (t) { |
| sig = pktgen_wait_thread_run(t); |
| if( sig == 0 ) break; |
| thread_lock(); |
| t=t->next; |
| thread_unlock(); |
| } |
| if(sig == 0) { |
| thread_lock(); |
| while (t) { |
| t->control |= (T_STOP); |
| t=t->next; |
| } |
| thread_unlock(); |
| } |
| return sig; |
| } |
| |
| static void pktgen_run_all_threads(void) |
| { |
| struct pktgen_thread *t = pktgen_threads; |
| |
| PG_DEBUG(printk("pktgen: entering pktgen_run_all_threads.\n")); |
| |
| thread_lock(); |
| |
| while(t) { |
| t->control |= (T_RUN); |
| t = t->next; |
| } |
| thread_unlock(); |
| |
| 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) |
| { |
| |
| 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, skb_shinfo(pkt_dev->skb)->nr_frags); |
| |
| if (pkt_dev->skb) |
| kfree_skb(pkt_dev->skb); |
| |
| pkt_dev->skb = NULL; |
| |
| return 0; |
| } |
| |
| static struct pktgen_dev *next_to_run(struct pktgen_thread *t ) |
| { |
| struct pktgen_dev *next, *best = NULL; |
| |
| if_lock(t); |
| |
| for(next=t->if_list; next ; next=next->next) { |
| if(!next->running) continue; |
| if(best == NULL) best=next; |
| else if ( next->next_tx_us < best->next_tx_us) |
| best = next; |
| } |
| if_unlock(t); |
| return best; |
| } |
| |
| static void pktgen_stop(struct pktgen_thread *t) { |
| struct pktgen_dev *next = NULL; |
| |
| PG_DEBUG(printk("pktgen: entering pktgen_stop.\n")); |
| |
| if_lock(t); |
| |
| for(next=t->if_list; next; next=next->next) |
| pktgen_stop_device(next); |
| |
| if_unlock(t); |
| } |
| |
| static void pktgen_rem_all_ifs(struct pktgen_thread *t) |
| { |
| struct pktgen_dev *cur, *next = NULL; |
| |
| /* Remove all devices, free mem */ |
| |
| if_lock(t); |
| |
| for(cur=t->if_list; cur; cur=next) { |
| next = cur->next; |
| pktgen_remove_device(t, cur); |
| } |
| |
| if_unlock(t); |
| } |
| |
| static void pktgen_rem_thread(struct pktgen_thread *t) |
| { |
| /* Remove from the thread list */ |
| |
| struct pktgen_thread *tmp = pktgen_threads; |
| |
| if (strlen(t->fname)) |
| remove_proc_entry(t->fname, NULL); |
| |
| thread_lock(); |
| |
| if (tmp == t) |
| pktgen_threads = tmp->next; |
| else { |
| while (tmp) { |
| if (tmp->next == t) { |
| tmp->next = t->next; |
| t->next = NULL; |
| break; |
| } |
| tmp = tmp->next; |
| } |
| } |
| thread_unlock(); |
| } |
| |
| 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); |
| 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); |
| } |
| 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_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_REMDEV) { |
| pktgen_rem_all_ifs(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); |
| } |
| |
| static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, const char* ifname) |
| { |
| struct pktgen_dev *pkt_dev = NULL; |
| if_lock(t); |
| |
| for(pkt_dev=t->if_list; pkt_dev; pkt_dev = pkt_dev->next ) { |
| if (strcmp(pkt_dev->ifname, ifname) == 0) { |
| 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; |
| } |
| pkt_dev->next =t->if_list; t->if_list=pkt_dev; |
| 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; |
| |
| /* We don't allow a device to be on several threads */ |
| |
| if( (pkt_dev = __pktgen_NN_threads(ifname, FIND)) == NULL) { |
| |
| pkt_dev = kmalloc(sizeof(struct pktgen_dev), GFP_KERNEL); |
| if (!pkt_dev) |
| return -ENOMEM; |
| |
| memset(pkt_dev, 0, sizeof(struct pktgen_dev)); |
| |
| 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_
|