diff options
Diffstat (limited to 'net/core/pktgen.c')
| -rw-r--r-- | net/core/pktgen.c | 2842 |
1 files changed, 1527 insertions, 1315 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index da16f8fd149..8eedaedba74 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -113,6 +113,7 @@ #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/vmalloc.h> @@ -125,6 +126,7 @@ #include <linux/capability.h> #include <linux/delay.h> #include <linux/timer.h> +#include <linux/list.h> #include <linux/init.h> #include <linux/skbuff.h> #include <linux/netdevice.h> @@ -149,38 +151,34 @@ #include <asm/io.h> #include <asm/dma.h> #include <asm/uaccess.h> -#include <asm/div64.h> /* do_div */ +#include <asm/div64.h> /* do_div */ #include <asm/timex.h> - -#define VERSION "pktgen v2.63: Packet Generator for packet performance testing.\n" +#define VERSION "pktgen v2.66: Packet Generator for packet performance testing.\n" /* #define PG_DEBUG(a) a */ -#define PG_DEBUG(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 */ +#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() down(&pktgen_sem) -#define thread_unlock() up(&pktgen_sem) +#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)); @@ -194,10 +192,9 @@ static struct proc_dir_entry *pg_proc_dir = NULL; #define MAX_CFLOWS 65536 -struct flow_state -{ - __u32 cur_daddr; - int count; +struct flow_state { + __u32 cur_daddr; + int count; }; struct pktgen_dev { @@ -206,141 +203,144 @@ 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 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 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; + 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 */ + + 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 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 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 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[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, - - 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 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[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, + + 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) */ + 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 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 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; + 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. */ + + /* Field for thread to receive "posted" events terminate, stop ifs etc. */ + + u32 control; int pid; int cpu; - wait_queue_head_t queue; + wait_queue_head_t queue; }; #define REMOVE 1 @@ -364,77 +364,76 @@ struct pktgen_thread { */ 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; - } + 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 milliseconds */ -static inline __u64 tv_to_ms(const struct timeval* tv) +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; + __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) +static inline __u64 tv_to_us(const struct timeval *tv) { - __u64 us = tv->tv_usec; - us += (__u64)tv->tv_sec * (__u64)1000000; - return us; + __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_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) +static inline __u64 pg_div64(__u64 n, __u64 base) { - __u64 tmp = n; + __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__) +#if defined(__sparc_v9__) || defined(__powerpc64__) || defined(__alpha__) || defined(__x86_64__) || defined(__ia64__) - do_div(tmp, base); + do_div(tmp, base); #else - tmp = divremdi3(n, base, PG_DIV); + tmp = divremdi3(n, base, PG_DIV); #endif - return tmp; + return tmp; } static inline u32 pktgen_random(void) @@ -448,51 +447,51 @@ static inline u32 pktgen_random(void) #endif } -static inline __u64 getCurMs(void) +static inline __u64 getCurMs(void) { - struct timeval tv; - do_gettimeofday(&tv); - return tv_to_ms(&tv); + struct timeval tv; + do_gettimeofday(&tv); + return tv_to_ms(&tv); } -static inline __u64 getCurUs(void) +static inline __u64 getCurUs(void) { - struct timeval tv; - do_gettimeofday(&tv); - return tv_to_us(&tv); + struct timeval tv; + do_gettimeofday(&tv); + return tv_to_us(&tv); } -static inline __u64 tv_diff(const struct timeval* a, const struct timeval* b) +static inline __u64 tv_diff(const struct timeval *a, const struct timeval *b) { - return tv_to_us(a) - tv_to_us(b); + return tv_to_us(a) - tv_to_us(b); } - /* old include end */ static char version[] __initdata = VERSION; -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_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_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]); +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]); /* Module parameters, defaults. */ -static int pg_count_d = 1000; /* 1000 pkts by default */ +static int pg_count_d = 1000; /* 1000 pkts by default */ static int pg_delay_d; static int pg_clone_skb_d; static int debug; -static DECLARE_MUTEX(pktgen_sem); -static struct pktgen_thread *pktgen_threads = NULL; +static DEFINE_MUTEX(pktgen_thread_lock); +static LIST_HEAD(pktgen_threads); static struct notifier_block pktgen_notifier_block = { .notifier_call = pktgen_device_event, @@ -504,21 +503,21 @@ static struct notifier_block pktgen_notifier_block = { */ static int pgctrl_show(struct seq_file *seq, void *v) -{ +{ seq_puts(seq, VERSION); return 0; } -static ssize_t pgctrl_write(struct file* file,const char __user * buf, - size_t count, loff_t *ppos) +static ssize_t pgctrl_write(struct file *file, const char __user * buf, + size_t count, loff_t * ppos) { int err = 0; char data[128]; - if (!capable(CAP_NET_ADMIN)){ - err = -EPERM; + if (!capable(CAP_NET_ADMIN)) { + err = -EPERM; goto out; - } + } if (count > sizeof(data)) count = sizeof(data); @@ -526,22 +525,22 @@ static ssize_t pgctrl_write(struct file* file,const char __user * buf, if (copy_from_user(data, buf, count)) { err = -EFAULT; goto out; - } - data[count-1] = 0; /* Make string */ + } + data[count - 1] = 0; /* Make string */ - if (!strcmp(data, "stop")) + if (!strcmp(data, "stop")) pktgen_stop_all_threads_ifs(); - else if (!strcmp(data, "start")) + else if (!strcmp(data, "start")) pktgen_run_all_threads(); - else + else printk("pktgen: Unknown command: %s\n", data); err = count; - out: - return err; +out: + return err; } static int pgctrl_open(struct inode *inode, struct file *file) @@ -550,147 +549,158 @@ static int pgctrl_open(struct inode *inode, struct file *file) } static struct file_operations pktgen_fops = { - .owner = THIS_MODULE, - .open = pgctrl_open, - .read = seq_read, - .llseek = seq_lseek, - .write = pgctrl_write, - .release = single_release, + .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; - 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); + 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_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_puts(seq, " src_mac: "); - seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows, pkt_dev->lflow); + 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 Flags: ", + pkt_dev->src_mac_count, pkt_dev->dst_mac_count); + if (pkt_dev->flags & F_IPV6) + seq_printf(seq, "IPV6 "); - 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); + if (pkt_dev->flags & F_IPSRC_RND) + seq_printf(seq, "IPSRC_RND "); - 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); + if (pkt_dev->flags & F_IPDST_RND) + seq_printf(seq, "IPDST_RND "); - } - 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); + if (pkt_dev->flags & F_TXSIZE_RND) + seq_printf(seq, "TXSIZE_RND "); - seq_puts(seq, " src_mac: "); + if (pkt_dev->flags & F_UDPSRC_RND) + seq_printf(seq, "UDPSRC_RND "); - 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 ? " " : ":"); + if (pkt_dev->flags & F_UDPDST_RND) + seq_printf(seq, "UDPDST_RND "); - seq_printf(seq, "dst_mac: "); - for (i = 0; i < 6; i++) - seq_printf(seq, "%02X%s", pkt_dev->dst_mac[i], i == 5 ? "\n" : ":"); + if (pkt_dev->flags & F_MACSRC_RND) + seq_printf(seq, "MACSRC_RND "); - 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); + if (pkt_dev->flags & F_MACDST_RND) + seq_printf(seq, "MACDST_RND "); - seq_printf(seq, " src_mac_count: %d dst_mac_count: %d \n Flags: ", - pkt_dev->src_mac_count, pkt_dev->dst_mac_count); + seq_puts(seq, "\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 */ + 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); - if (pkt_dev->flags & F_IPV6) - seq_printf(seq, "IPV6 "); - - if (pkt_dev->flags & F_IPSRC_RND) - seq_printf(seq, "IPSRC_RND "); - - if (pkt_dev->flags & F_IPDST_RND) - seq_printf(seq, "IPDST_RND "); - - if (pkt_dev->flags & F_TXSIZE_RND) - seq_printf(seq, "TXSIZE_RND "); - - if (pkt_dev->flags & F_UDPSRC_RND) - seq_printf(seq, "UDPSRC_RND "); - - if (pkt_dev->flags & F_UDPDST_RND) - seq_printf(seq, "UDPDST_RND "); - - if (pkt_dev->flags & F_MACSRC_RND) - seq_printf(seq, "MACSRC_RND "); - - if (pkt_dev->flags & F_MACDST_RND) - seq_printf(seq, "MACDST_RND "); - - - seq_puts(seq, "\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 */ - - 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); - - seq_printf(seq, " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n", + 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); - if(pkt_dev->flags & F_IPV6) { + 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", + 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); - - seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", + seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n", pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src); - seq_printf(seq, " flows: %u\n", pkt_dev->nflows); + seq_printf(seq, " flows: %u\n", pkt_dev->nflows); if (pkt_dev->result[0]) - seq_printf(seq, "Result: %s\n", pkt_dev->result); + seq_printf(seq, "Result: %s\n", pkt_dev->result); else - seq_printf(seq, "Result: Idle\n"); + seq_printf(seq, "Result: Idle\n"); return 0; } - -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) { + char c; + if (get_user(c, &user_buffer[i])) + return -EFAULT; + switch (c) { case '\"': case '\n': case '\r': @@ -706,34 +716,34 @@ done: 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; - if (get_user(c, &user_buffer[i])) - return -EFAULT; - if ((c >= '0') && (c <= '9')) { + + 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++) { - char c; - if (get_user(c, &user_buffer[i])) - return -EFAULT; - switch (c) { + for (; i < maxlen; i++) { + char c; + if (get_user(c, &user_buffer[i])) + return -EFAULT; + switch (c) { case '\"': case '\n': case '\r': @@ -746,119 +756,133 @@ static int strn_len(const char __user *user_buffer, unsigned int maxlen) }; } done_str: - return i; } -static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer, - size_t count, loff_t *offset) +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; + 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; - char* pg_result = NULL; - int tmp = 0; + char *pg_result = NULL; + int tmp = 0; char buf[128]; - - pg_result = &(pkt_dev->result[0]); - + + 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) { + if (tmp < 0) { printk("pktgen: illegal format\n"); - return tmp; + return tmp; } - i += tmp; - + i += tmp; + /* Read variable name */ len = strn_len(&user_buffer[i], sizeof(name) - 1); - if (len < 0) { return len; } + if (len < 0) { + return len; + } memset(name, 0, sizeof(name)); - if (copy_from_user(name, &user_buffer[i], len) ) + 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; - + if (len < 0) + return len; + i += len; if (debug) { - char tb[count + 1]; - if (copy_from_user(tb, user_buffer, count)) + char tb[count + 1]; + if (copy_from_user(tb, user_buffer, count)) return -EFAULT; - tb[count] = 0; + tb[count] = 0; printk("pktgen: %s,%lu buffer -:%s:-\n", name, - (unsigned long) count, tb); - } + (unsigned long)count, tb); + } if (!strcmp(name, "min_pkt_size")) { len = num_arg(&user_buffer[i], 10, &value); - if (len < 0) { return len; } + 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); + 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")) { + if (!strcmp(name, "max_pkt_size")) { len = num_arg(&user_buffer[i], 10, &value); - if (len < 0) { return len; } + 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); + 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 */ + /* Shortcut for min = max */ if (!strcmp(name, "pkt_size")) { len = num_arg(&user_buffer[i], 10, &value); - if (len < 0) { return len; } + 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; - } + 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")) { + if (!strcmp(name, "debug")) { len = num_arg(&user_buffer[i], 10, &value); - if (len < 0) { return len; } + if (len < 0) { + return len; + } i += len; - debug = value; + debug = value; sprintf(pg_result, "OK: debug=%u", debug); return count; } - if (!strcmp(name, "frags")) { + if (!strcmp(name, "frags")) { len = num_arg(&user_buffer[i], 10, &value); - if (len < 0) { return len; } + if (len < 0) { + return len; + } i += len; pkt_dev->nfrags = value; sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags); @@ -866,7 +890,9 @@ static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer } if (!strcmp(name, "delay")) { len = num_arg(&user_buffer[i], 10, &value); - if (len < 0) { return len; } + if (len < 0) { + return len; + } i += len; if (value == 0x7FFFFFFF) { pkt_dev->delay_us = 0x7FFFFFFF; @@ -875,308 +901,347 @@ static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer 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); + 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) { return len; } + 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; - } + 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) { return len; } + 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; - } + 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) { return len; } + 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; - } + 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) { return len; } + 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; - } + 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; } + if (len < 0) { + return len; + } i += len; - pkt_dev->clone_skb = value; - + 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; } + if (len < 0) { + return len; + } i += len; pkt_dev->count = value; sprintf(pg_result, "OK: count=%llu", - (unsigned long long) pkt_dev->count); + (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; } + 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); + 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; } + 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); + 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); + char f[32]; + memset(f, 0, 32); len = strn_len(&user_buffer[i], sizeof(f) - 1); - if (len < 0) { return len; } + 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; - } + 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 (len < 0) { + return len; + } - if (copy_from_user(buf, &user_buffer[i], 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; + 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 (len < 0) { + return len; + } - if (copy_from_user(buf, &user_buffer[i], 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); + 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; + if (len < 0) + return len; pkt_dev->flags |= F_IPV6; - if (copy_from_user(buf, &user_buffer[i], len)) + if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; - buf[len] = 0; + buf[len] = 0; scan_ip6(buf, pkt_dev->in6_daddr.s6_addr); - fmt_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) + if (debug) printk("pktgen: dst6 set to: %s\n", buf); - i += len; + 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; + if (len < 0) + return len; pkt_dev->flags |= F_IPV6; - if (copy_from_user(buf, &user_buffer[i], len)) + if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; - buf[len] = 0; + buf[len] = 0; scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr); - fmt_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) + 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; + 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; + if (len < 0) + return len; pkt_dev->flags |= F_IPV6; - if (copy_from_user(buf, &user_buffer[i], len)) + if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; - buf[len] = 0; + buf[len] = 0; scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); - fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); + fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr); - if(debug) + if (debug) printk("pktgen: dst6_max set to: %s\n", buf); - i += len; + 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; + if (len < 0) + return len; pkt_dev->flags |= F_IPV6; - if (copy_from_user(buf, &user_buffer[i], len)) + if (copy_from_user(buf, &user_buffer[i], len)) return -EFAULT; - buf[len] = 0; + buf[len] = 0; scan_ip6(buf, pkt_dev->in6_saddr.s6_addr); - fmt_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) + if (debug) printk("pktgen: src6 set to: %s\n", buf); - - i += len; + + 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)) + 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); + 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)) + 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); + 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; @@ -1186,15 +1251,17 @@ static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer 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) { return len; } + if (len < 0) { + return len; + } memset(valstr, 0, sizeof(valstr)); - if( copy_from_user(valstr, &user_buffer[i], len)) + if (copy_from_user(valstr, &user_buffer[i], len)) return -EFAULT; i += len; - for(*m = 0;*v && m < pkt_dev->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'; @@ -1216,7 +1283,7 @@ static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer /* 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; } @@ -1225,13 +1292,15 @@ static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer unsigned char *m = pkt_dev->src_mac; len = strn_len(&user_buffer[i], sizeof(valstr) - 1); - if (len < 0) { return len; } + if (len < 0) { + return len; + } memset(valstr, 0, sizeof(valstr)); - if( copy_from_user(valstr, &user_buffer[i], len)) + if (copy_from_user(valstr, &user_buffer[i], len)) return -EFAULT; i += len; - for(*m = 0;*v && m < pkt_dev->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'; @@ -1248,21 +1317,23 @@ static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer m++; *m = 0; } - } + } - sprintf(pg_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, "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; } + if (len < 0) { + return len; + } i += len; if (value > MAX_CFLOWS) value = MAX_CFLOWS; @@ -1274,13 +1345,15 @@ static ssize_t pktgen_if_write(struct file *file, const char __user *user_buffer if (!strcmp(name, "flowlen")) { len = num_arg(&user_buffer[i], 10, &value); - if (len < 0) { return len; } + 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; } @@ -1291,35 +1364,35 @@ static int pktgen_if_open(struct inode *inode, struct file *file) } 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, + .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 = NULL; + 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); + t->name, t->max_before_softirq); + + seq_printf(seq, "Running: "); - seq_printf(seq, "Running: "); - - if_lock(t); - for(pkt_dev = t->if_list;pkt_dev; pkt_dev = pkt_dev->next) - if(pkt_dev->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: "); - for(pkt_dev = t->if_list;pkt_dev; pkt_dev = pkt_dev->next) - if(!pkt_dev->running) + 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]) @@ -1327,30 +1400,30 @@ static int pktgen_thread_show(struct seq_file *seq, void *v) else seq_printf(seq, "\nResult: NA\n"); - if_unlock(t); + 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) + 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; + 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; + char *pg_result; + unsigned long value = 0; if (count < 1) { - // sprintf(pg_result, "Wrong command format"); + // sprintf(pg_result, "Wrong command format"); return -EINVAL; } max = count - i; - len = count_trail_chars(&user_buffer[i], max); - if (len < 0) + len = count_trail_chars(&user_buffer[i], max); + if (len < 0) return len; i += len; @@ -1358,26 +1431,25 @@ static ssize_t pktgen_thread_write(struct file *file, /* 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) + if (len < 0) return len; i += len; if (debug) - printk("pktgen: t=%s, count=%lu\n", name, - (unsigned long) count); + printk("pktgen: t=%s, count=%lu\n", name, (unsigned long)count); - if(!t) { + if (!t) { printk("pktgen: ERROR: No thread\n"); ret = -EINVAL; goto out; @@ -1385,48 +1457,47 @@ static ssize_t pktgen_thread_write(struct file *file, pg_result = &(t->result[0]); - if (!strcmp(name, "add_device")) { - char f[32]; - memset(f, 0, 32); + 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; + if (len < 0) { + ret = len; goto out; } - if( copy_from_user(f, &user_buffer[i], len) ) + 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); + 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")) { - thread_lock(); - t->control |= T_REMDEV; - thread_unlock(); - schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ + 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"); + 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); + 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: - +out: return ret; } @@ -1436,47 +1507,78 @@ static int pktgen_thread_open(struct inode *inode, struct file *file) } 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, + .owner = THIS_MODULE, + .open = pktgen_thread_open, + .read = seq_read, + .llseek = seq_lseek, + .write = pktgen_thread_write, + .release = single_release, }; /* Think find or remove for NN */ -static struct pktgen_dev *__pktgen_NN_threads(const char* ifname, int remove) +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) { + list_for_each_entry(t, &pktgen_threads, th_list) { pkt_dev = pktgen_find_dev(t, ifname); if (pkt_dev) { - if(remove) { - if_lock(t); - pktgen_remove_device(t, pkt_dev); - if_unlock(t); - } + if (remove) { + if_lock(t); + pkt_dev->removal_mark = 1; + t->control |= T_REMDEV; + if_unlock(t); + } break; } - t = t->next; } - return pkt_dev; + return pkt_dev; } -static struct pktgen_dev *pktgen_NN_threads(const char* ifname, int remove) +/* + * mark a device for removal + */ +static int pktgen_mark_device(const char *ifname) { struct pktgen_dev *pkt_dev = NULL; - thread_lock(); - pkt_dev = __pktgen_NN_threads(ifname, remove); - thread_unlock(); - return pkt_dev; + 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 pktgen_device_event(struct notifier_block *unused, unsigned long event, void *ptr) +static int pktgen_device_event(struct notifier_block *unused, + unsigned long event, void *ptr) { struct net_device *dev = (struct net_device *)(ptr); @@ -1491,9 +1593,9 @@ static int pktgen_device_event(struct notifier_block *unused, unsigned long even case NETDEV_UP: /* Ignore for now */ break; - + case NETDEV_UNREGISTER: - pktgen_NN_threads(dev->name, REMOVE); + pktgen_mark_device(dev->name); break; }; @@ -1502,15 +1604,16 @@ static int pktgen_device_event(struct notifier_block *unused, unsigned long even /* Associate pktgen_dev with a device. */ -static struct net_device* pktgen_setup_dev(struct pktgen_dev *pkt_dev) { +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; - } + pkt_dev->odev = NULL; + } odev = dev_get_by_name(pkt_dev->ifname); @@ -1519,7 +1622,8 @@ static struct net_device* pktgen_setup_dev(struct pktgen_dev *pkt_dev) { goto out; } if (odev->type != ARPHRD_ETHER) { - printk("pktgen: not an ethernet device: \"%s\"\n", pkt_dev->ifname); + printk("pktgen: not an ethernet device: \"%s\"\n", + pkt_dev->ifname); goto out_put; } if (!netif_running(odev)) { @@ -1527,13 +1631,13 @@ static struct net_device* pktgen_setup_dev(struct pktgen_dev *pkt_dev) { goto out_put; } pkt_dev->odev = odev; - - return pkt_dev->odev; + + return pkt_dev->odev; out_put: dev_put(odev); out: - return NULL; + return NULL; } @@ -1543,59 +1647,64 @@ out: 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->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); + memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN); - /* Set up Dest MAC */ + /* 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) { + /* 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; + 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]) { + for (i = 0; i < IN6_ADDR_HSIZE; i++) + if (pkt_dev->cur_in6_saddr.s6_addr[i]) { set = 1; break; } - if(!set) { - + 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); + 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; } @@ -1603,28 +1712,28 @@ static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) read_unlock_bh(&idev->lock); } read_unlock(&addrconf_lock); - if(err) printk("pktgen: ERROR: IPv6 link address not availble.\n"); + if (err) + printk("pktgen: ERROR: IPv6 link address not availble.\n"); } #endif - } - else { + } else { pkt_dev->saddr_min = 0; pkt_dev->saddr_max = 0; if (strlen(pkt_dev->src_min) == 0) { - - struct in_device *in_dev; + + 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_min = + in_dev->ifa_list->ifa_address; pkt_dev->saddr_max = pkt_dev->saddr_min; } } rcu_read_unlock(); - } - else { + } else { pkt_dev->saddr_min = in_aton(pkt_dev->src_min); pkt_dev->saddr_max = in_aton(pkt_dev->src_max); } @@ -1632,13 +1741,13 @@ static void pktgen_setup_inject(struct pktgen_dev *pkt_dev) 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; + /* 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; } @@ -1651,7 +1760,7 @@ static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us) 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) + if (spin_until_us - now > jiffies_to_usecs(1) + 1) schedule_timeout_interruptible(1); else if (spin_until_us - now > 100) { do_softirq(); @@ -1667,102 +1776,110 @@ static void spin(struct pktgen_dev *pkt_dev, __u64 spin_until_us) 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; +static void mod_cur_headers(struct pktgen_dev *pkt_dev) +{ + __u32 imn; + __u32 imx; + int flow = 0; - if(pkt_dev->cflows) { + 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 { + 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 { + } + } + + 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) + 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))) { + if ((imn = ntohl(pkt_dev->saddr_min)) < (imx = + ntohl(pkt_dev-> + saddr_max))) { __u32 t; - if (pkt_dev->flags & F_IPSRC_RND) + if (pkt_dev->flags & F_IPSRC_RND) t = ((pktgen_random() % (imx - imn)) + imn); else { t = ntohl(pkt_dev->cur_saddr); @@ -1773,25 +1890,32 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev) { } 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))) { + 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 = ((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); + 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++; @@ -1801,60 +1925,59 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev) { pkt_dev->cur_daddr = htonl(t); } } - if(pkt_dev->cflows) { - pkt_dev->flows[flow].cur_daddr = pkt_dev->cur_daddr; + 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 { /* 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++) { + 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]); + ((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 { + 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) + if (t > pkt_dev->max_pkt_size) t = pkt_dev->min_pkt_size; - } - pkt_dev->cur_pkt_size = t; - } + } + 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) +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; - + struct pktgen_hdr *pgh = NULL; + /* Update any of the values, used when we're incrementing various * fields. */ @@ -1875,47 +1998,47 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev, udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr)); memcpy(eth, pkt_dev->hh, 12); - *(u16*)ð[12] = __constant_htons(ETH_P_IP); + *(u16 *) & eth[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 = 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 */ + 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->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); + iph->check = ip_fast_csum((void *)iph, iph->ihl); skb->protocol = __constant_htons(ETH_P_IP); - skb->mac.raw = ((u8 *)iph) - 14; + 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); + 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); - + 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 (datalen > frags * PAGE_SIZE) { + skb_put(skb, datalen - frags * PAGE_SIZE); + datalen = frags * PAGE_SIZE; } i = 0; @@ -1924,7 +2047,7 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev, 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 < 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; @@ -1944,30 +2067,33 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev, skb_shinfo(skb)->frags[i - 1].size -= rem; - skb_shinfo(skb)->frags[i] = skb_shinfo(skb)->frags[i - 1]; + 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].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 */ + /* 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++; - 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; } @@ -1980,23 +2106,24 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev, * --ro */ -static unsigned int scan_ip6(const char *s,char ip[16]) +static unsigned int scan_ip6(const char *s, char ip[16]) { unsigned int i; - unsigned int len=0; + unsigned int len = 0; unsigned long u; char suffix[16]; - unsigned int prefixlen=0; - unsigned int suffixlen=0; + unsigned int prefixlen = 0; + unsigned int suffixlen = 0; __u32 tmp; - for (i=0; i<16; i++) ip[i]=0; + for (i = 0; i < 16; i++) + ip[i] = 0; for (;;) { if (*s == ':') { len++; - if (s[1] == ':') { /* Found "::", skip to part 2 */ - s+=2; + if (s[1] == ':') { /* Found "::", skip to part 2 */ + s += 2; len++; break; } @@ -2004,129 +2131,149 @@ static unsigned int scan_ip6(const char *s,char ip[16]) } { char *tmp; - u=simple_strtoul(s,&tmp,16); - i=tmp-s; + u = simple_strtoul(s, &tmp, 16); + i = tmp - s; } - if (!i) return 0; - if (prefixlen==12 && s[i]=='.') { + 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; + 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) + s += i; + len += i; + if (prefixlen == 16) return len; } /* part 2, after "::" */ for (;;) { if (*s == ':') { - if (suffixlen==0) + if (suffixlen == 0) break; s++; len++; - } else if (suffixlen!=0) + } else if (suffixlen != 0) break; { char *tmp; - u=simple_strtol(s,&tmp,16); - i=tmp-s; + u = simple_strtol(s, &tmp, 16); + i = tmp - s; } if (!i) { - if (*s) len--; + if (*s) + len--; break; } - if (suffixlen+prefixlen<=12 && s[i]=='.') { + if (suffixlen + prefixlen <= 12 && s[i] == '.') { tmp = in_aton(s); - memcpy((struct in_addr*)(suffix+suffixlen), &tmp, sizeof(tmp)); - suffixlen+=4; - len+=strlen(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) + s += i; + len += i; + if (prefixlen + suffixlen == 16) break; } - for (i=0; i<suffixlen; i++) - ip[16-suffixlen+i] = suffix[i]; + 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 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 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]) { +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) { + 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; + 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]; + 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; + compressing = 1; + if (j == 0) { + *s++ = ':'; + ++len; } } } else { if (compressing) { - compressing=0; - *s++=':'; ++len; + compressing = 0; + *s++ = ':'; + ++len; } - i = fmt_xlong(s,temp); len += i; s += i; - if (j<14) { + i = fmt_xlong(s, temp); + len += i; + s += i; + if (j < 14) { *s++ = ':'; ++len; } } } if (compressing) { - *s++=':'; ++len; + *s++ = ':'; + ++len; } - *s=0; + *s = 0; return len; } -static struct sk_buff *fill_packet_ipv6(struct net_device *odev, - struct pktgen_dev *pkt_dev) +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; + struct pktgen_hdr *pgh = NULL; /* Update any of the values, used when we're incrementing various * fields. @@ -2147,23 +2294,23 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev, udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr)); memcpy(eth, pkt_dev->hh, 12); - *(u16*)ð[12] = __constant_htons(ETH_P_IPV6); + *(u16 *) & eth[12] = __constant_htons(ETH_P_IPV6); - datalen = pkt_dev->cur_pkt_size-14- - sizeof(struct ipv6hdr)-sizeof(struct udphdr); /* Eth + IPh + UDPh */ + datalen = pkt_dev->cur_pkt_size - 14 - sizeof(struct ipv6hdr) - sizeof(struct udphdr); /* Eth + IPh + UDPh */ - if (datalen < sizeof(struct pktgen_hdr)) { + if (datalen < sizeof(struct pktgen_hdr)) { datalen = sizeof(struct pktgen_hdr); if (net_ratelimit()) - printk(KERN_INFO "pktgen: increased datalen to %d\n", datalen); + 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 */ + udph->len = htons(datalen + sizeof(struct udphdr)); + udph->check = 0; /* No checksum */ - *(u32*)iph = __constant_htonl(0x60000000); /* Version + flow */ + *(u32 *) iph = __constant_htonl(0x60000000); /* Version + flow */ iph->hop_limit = 32; @@ -2173,24 +2320,24 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev, 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->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); + 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); - + 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 (datalen > frags * PAGE_SIZE) { + skb_put(skb, datalen - frags * PAGE_SIZE); + datalen = frags * PAGE_SIZE; } i = 0; @@ -2199,7 +2346,7 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev, 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 < 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; @@ -2219,305 +2366,333 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev, skb_shinfo(skb)->frags[i - 1].size -= rem; - skb_shinfo(skb)->frags[i] = skb_shinfo(skb)->frags[i - 1]; + 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].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 */ + /* 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++; - + 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) +static inline struct sk_buff *fill_packet(struct net_device *odev, + struct pktgen_dev *pkt_dev) { - if(pkt_dev->flags & F_IPV6) + 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) +static void pktgen_clear_counters(struct pktgen_dev *pkt_dev) { - pkt_dev->seq_num = 1; - pkt_dev->idle_acc = 0; + pkt_dev->seq_num = 1; + pkt_dev->idle_acc = 0; pkt_dev->sofar = 0; - pkt_dev->tx_bytes = 0; - pkt_dev->errors = 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; + struct pktgen_dev *pkt_dev; 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 ) { + 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) { + if (pkt_dev->odev) { pktgen_clear_counters(pkt_dev); - pkt_dev->running = 1; /* Cranke yeself! */ + 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_us = getCurUs(); /* Transmit immediately */ pkt_dev->next_tx_ns = 0; - + strcpy(pkt_dev->result, "Starting"); started++; - } - else + } else strcpy(pkt_dev->result, "Error starting"); } if_unlock(t); - if(started) t->control &= ~(T_STOP); + if (started) + t->control &= ~(T_STOP); } static void pktgen_stop_all_threads_ifs(void) { - struct pktgen_thread *t = pktgen_threads; + struct pktgen_thread *t; - PG_DEBUG(printk("pktgen: entering pktgen_stop_all_threads.\n")); + PG_DEBUG(printk("pktgen: entering pktgen_stop_all_threads_ifs.\n")); - thread_lock(); - while(t) { - pktgen_stop(t); - t = t->next; - } - thread_unlock(); + 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 ) +static int thread_is_running(struct pktgen_thread *t) { - struct pktgen_dev *next; - int res = 0; + struct pktgen_dev *pkt_dev; + int res = 0; - for(next=t->if_list; next; next=next->next) { - if(next->running) { + list_for_each_entry(pkt_dev, &t->if_list, list) + if (pkt_dev->running) { res = 1; break; } - } - return res; + return res; } -static int pktgen_wait_thread_run(struct pktgen_thread *t ) +static int pktgen_wait_thread_run(struct pktgen_thread *t) { - if_lock(t); + if_lock(t); - while(thread_is_running(t)) { + while (thread_is_running(t)) { - if_unlock(t); + if_unlock(t); - msleep_interruptible(100); + msleep_interruptible(100); - if (signal_pending(current)) - goto signal; - if_lock(t); - } - if_unlock(t); - return 1; - signal: - return 0; + 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; + struct pktgen_thread *t; int sig = 1; - - while (t) { + + mutex_lock(&pktgen_thread_lock); + + list_for_each_entry(t, &pktgen_threads, th_list) { 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(); + 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 = pktgen_threads; + struct pktgen_thread *t; PG_DEBUG(printk("pktgen: entering pktgen_run_all_threads.\n")); - thread_lock(); + mutex_lock(&pktgen_thread_lock); - while(t) { + list_for_each_entry(t, &pktgen_threads, th_list) t->control |= (T_RUN); - t = t->next; - } - thread_unlock(); - schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */ - + 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); + __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) +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; - } + int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1; - pkt_dev->stopped_at = getCurUs(); - pkt_dev->running = 0; + if (!pkt_dev->running) { + printk("pktgen: interface: %s is already stopped\n", + pkt_dev->ifname); + return -EINVAL; + } - show_results(pkt_dev, skb_shinfo(pkt_dev->skb)->nr_frags); + pkt_dev->stopped_at = getCurUs(); + pkt_dev->running = 0; - if (pkt_dev->skb) - kfree_skb(pkt_dev->skb); + show_results(pkt_dev, nr_frags); - pkt_dev->skb = NULL; - - return 0; + return 0; } -static struct pktgen_dev *next_to_run(struct pktgen_thread *t ) +static struct pktgen_dev *next_to_run(struct pktgen_thread *t) { - struct pktgen_dev *next, *best = NULL; - + struct pktgen_dev *pkt_dev, *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; + 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; + return best; } -static void pktgen_stop(struct pktgen_thread *t) { - struct pktgen_dev *next = NULL; +static void pktgen_stop(struct pktgen_thread *t) +{ + struct pktgen_dev *pkt_dev; - PG_DEBUG(printk("pktgen: entering pktgen_stop.\n")); + PG_DEBUG(printk("pktgen: entering pktgen_stop\n")); - if_lock(t); + if_lock(t); - for(next=t->if_list; next; next=next->next) - pktgen_stop_device(next); + list_for_each_entry(pkt_dev, &t->if_list, list) { + pktgen_stop_device(pkt_dev); + if (pkt_dev->skb) + kfree_skb(pkt_dev->skb); - if_unlock(t); + pkt_dev->skb = NULL; + } + + if_unlock(t); } -static void pktgen_rem_all_ifs(struct pktgen_thread *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 pktgen_dev *cur, *next = NULL; - - /* Remove all devices, free mem */ - - if_lock(t); - - for(cur=t->if_list; cur; cur=next) { - next = cur->next; + 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); + if_unlock(t); } -static void pktgen_rem_thread(struct pktgen_thread *t) +static void pktgen_rem_all_ifs(struct pktgen_thread *t) { - /* Remove from the thread list */ + struct list_head *q, *n; + struct pktgen_dev *cur; - struct pktgen_thread *tmp = pktgen_threads; + /* Remove all devices, free mem */ - remove_proc_entry(t->name, pg_proc_dir); + PG_DEBUG(printk("pktgen: entering pktgen_rem_all_ifs\n")); + if_lock(t); - thread_lock(); + list_for_each_safe(q, n, &t->if_list) { + cur = list_entry(q, struct pktgen_dev, list); - 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; - } + if (cur->skb) + kfree_skb(cur->skb); + cur->skb = NULL; + + pktgen_remove_device(t, cur); } - thread_unlock(); + + 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) @@ -2527,7 +2702,7 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev) int ret; odev = pkt_dev->odev; - + if (pkt_dev->delay_us || pkt_dev->delay_ns) { u64 now; @@ -2544,67 +2719,71 @@ static __inline__ void pktgen_xmit(struct pktgen_dev *pkt_dev) 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()) + 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_us = getCurUs(); /* TODO */ pkt_dev->next_tx_ns = 0; - goto out; /* Try the next interface */ + 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)) { + if ((++pkt_dev->clone_count >= pkt_dev->clone_skb) + || (!pkt_dev->skb)) { /* build a new pkt */ - if (pkt_dev->skb) + 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 */ + pkt_dev->clone_count--; /* back out increment, OOM */ goto out; } pkt_dev->allocated_skbs++; - pkt_dev->clone_count = 0; /* reset counter */ + 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: + retry_now: ret = odev->hard_start_xmit(pkt_dev->skb, odev); if (likely(ret == NETDEV_TX_OK)) { - pkt_dev->last_ok = 1; + 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 + + } else if (ret == NETDEV_TX_LOCKED && (odev->features & NETIF_F_LLTX)) { cpu_relax(); goto retry_now; - } else { /* Retry it next time */ - + } 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; } @@ -2619,16 +2798,16 @@ retry_now: 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 */ + 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) { @@ -2641,72 +2820,74 @@ retry_now: } pkt_dev->idle_acc += getCurUs() - idle_start; } - + /* Done with this */ pktgen_stop_device(pkt_dev); - } - out:; - } + 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) +static void pktgen_thread_worker(struct pktgen_thread *t) { DEFINE_WAIT(wait); - struct pktgen_dev *pkt_dev = NULL; + struct pktgen_dev *pkt_dev = NULL; int cpu = t->cpu; sigset_t tmpsig; u32 max_before_softirq; - u32 tx_since_softirq = 0; + u32 tx_since_softirq = 0; daemonize("pktgen/%d", cpu); - /* Block all signals except SIGKILL, SIGSTOP and SIGTERM */ + /* 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)); + 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); + 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(); + 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; + t->pid = current->pid; - PG_DEBUG(printk("pktgen: starting pktgen/%d: pid=%d\n", cpu, 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_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) { + pkt_dev = next_to_run(t); + + if (pkt_dev) { pktgen_xmit(pkt_dev); @@ -2724,115 +2905,125 @@ static void pktgen_thread_worker(struct pktgen_thread *t) } } else { prepare_to_wait(&(t->queue), &wait, TASK_INTERRUPTIBLE); - schedule_timeout(HZ/10); + 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_TERMINATE || signal_pending(current)) + /* we received a request to terminate ourself */ + break; - if(t->control & T_STOP) { + if (t->control & T_STOP) { pktgen_stop(t); t->control &= ~(T_STOP); } - if(t->control & T_RUN) { + if (t->control & T_RUN) { pktgen_run(t); t->control &= ~(T_RUN); } - if(t->control & T_REMDEV) { + 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()) + if (need_resched()) schedule(); - } + } + + PG_DEBUG(printk("pktgen: %s stopping all device\n", t->name)); + pktgen_stop(t); - 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 all device\n", t->name)); - pktgen_rem_all_ifs(t); + PG_DEBUG(printk("pktgen: %s removing thread.\n", t->name)); + pktgen_rem_thread(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) +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 (strncmp(pkt_dev->ifname, ifname, IFNAMSIZ) == 0) { - break; - } - } - - if_unlock(t); - PG_DEBUG(printk("pktgen: find_dev(%s) returning %p\n", ifname,pkt_dev)); - return pkt_dev; + 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) +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; + + 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; +out: + if_unlock(t); + return rv; } /* Called under thread lock */ -static int pktgen_add_device(struct pktgen_thread *t, const char* ifname) +static int pktgen_add_device(struct pktgen_thread *t, const char *ifname) { - struct pktgen_dev *pkt_dev; + 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; - } + 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)); + 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)); + 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; @@ -2841,14 +3032,14 @@ static int pktgen_add_device(struct pktgen_thread *t, const char* ifname) 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_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)) { + if (!pktgen_setup_dev(pkt_dev)) { printk("pktgen: ERROR: pktgen_setup_dev failed.\n"); if (pkt_dev->flows) vfree(pkt_dev->flows); @@ -2871,65 +3062,74 @@ static int pktgen_add_device(struct pktgen_thread *t, const char* ifname) return add_dev_to_thread(t, pkt_dev); } -static struct pktgen_thread * __init pktgen_find_thread(const char* name) +static struct pktgen_thread *__init pktgen_find_thread(const char *name) { - struct pktgen_thread *t = NULL; + struct pktgen_thread *t; - thread_lock(); + mutex_lock(&pktgen_thread_lock); - t = pktgen_threads; - while (t) { - if (strcmp(t->name, name) == 0) - break; + list_for_each_entry(t, &pktgen_threads, th_list) + if (strcmp(t->name, name) == 0) { + mutex_unlock(&pktgen_thread_lock); + return t; + } - t = t->next; - } - thread_unlock(); - return t; + mutex_unlock(&pktgen_thread_lock); + return NULL; } -static int __init pktgen_create_thread(const char* name, int cpu) +static int __init pktgen_create_thread(const char *name, int cpu) { - struct pktgen_thread *t = NULL; + 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); + 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", + + 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; - } + kfree(t); + return -EINVAL; + } pe->proc_fops = &pktgen_thread_fops; pe->data = t; - t->next = pktgen_threads; - pktgen_threads = t; + INIT_LIST_HEAD(&t->if_list); - if (kernel_thread((void *) pktgen_thread_worker, (void *) t, - CLONE_FS | CLONE_FILES | CLONE_SIGHAND) < 0) + 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; } @@ -2937,55 +3137,52 @@ static int __init pktgen_create_thread(const char* name, int cpu) /* * Removes a device from the thread if_list. */ -static void _rem_dev_from_if_list(struct pktgen_thread *t, struct pktgen_dev *pkt_dev) +static void _rem_dev_from_if_list(struct pktgen_thread *t, + struct pktgen_dev *pkt_dev) { - struct pktgen_dev *i, *prev = NULL; - - i = t->if_list; + struct list_head *q, *n; + struct pktgen_dev *p; - while(i) { - if(i == pkt_dev) { - if(prev) prev->next = i->next; - else t->if_list = NULL; - break; - } - prev = i; - i=i->next; + 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) +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->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; - } - + pkt_dev->odev = NULL; + } + /* And update the thread if_list */ _rem_dev_from_if_list(t, pkt_dev); - /* Clean up proc file system */ + /* 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; + return 0; } -static int __init pg_init(void) +static int __init pg_init(void) { int cpu; struct proc_dir_entry *pe; @@ -2998,50 +3195,65 @@ static int __init pg_init(void) 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); + if (pe == NULL) { + printk("pktgen: ERROR: cannot create %s procfs entry.\n", + PGCTRL); proc_net_remove(PG_PROC_DIR); - return -EINVAL; - } + return -EINVAL; + } - pe->proc_fops = &pktgen_fops; - pe->data = NULL; + 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); - pktgen_create_thread(buf, cpu); - } - return 0; + 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 */ + /* Stop all interfaces & threads */ - while (pktgen_threads) { - struct pktgen_thread *t = pktgen_threads; - pktgen_threads->control |= (T_TERMINATE); + 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 != pktgen_threads), HZ); - } + wait_event_interruptible_timeout(queue, (t->removed == 1), HZ); + } - /* Un-register us from receiving netdevice events */ + /* Un-register us from receiving netdevice events */ unregister_netdevice_notifier(&pktgen_notifier_block); - /* Clean up proc file system */ + /* Clean up proc file system */ remove_proc_entry(PGCTRL, pg_proc_dir); proc_net_remove(PG_PROC_DIR); } - module_init(pg_init); module_exit(pg_cleanup); |