#include <asm/byteorder.h>
#include <linux/rcupdate.h>
#include <linux/bitops.h>
-#include <asm/io.h>
+#include <linux/io.h>
+#include <linux/timex.h>
+#include <linux/uaccess.h>
#include <asm/dma.h>
-#include <asm/uaccess.h>
#include <asm/div64.h> /* do_div */
-#include <asm/timex.h>
-
-#define VERSION "pktgen v2.70: Packet Generator for packet performance testing.\n"
+#define VERSION "2.72"
#define IP_NAME_SZ 32
#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
#define MPLS_STACK_BOTTOM htonl(0x00000100)
#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
/* Thread control flag bits */
-#define T_TERMINATE (1<<0)
-#define T_STOP (1<<1) /* Stop run */
-#define T_RUN (1<<2) /* Start run */
-#define T_REMDEVALL (1<<3) /* Remove all devs */
-#define T_REMDEV (1<<4) /* Remove one dev */
+#define T_STOP (1<<0) /* Stop run */
+#define T_RUN (1<<1) /* Start run */
+#define T_REMDEVALL (1<<2) /* Remove all devs */
+#define T_REMDEV (1<<3) /* Remove one dev */
/* If lock -- can be removed after some work */
#define if_lock(t) spin_lock(&(t->if_lock));
#define PKTGEN_MAGIC 0xbe9be955
#define PG_PROC_DIR "pktgen"
#define PGCTRL "pgctrl"
-static struct proc_dir_entry *pg_proc_dir = NULL;
+static struct proc_dir_entry *pg_proc_dir;
#define MAX_CFLOWS 65536
*/
struct proc_dir_entry *entry; /* proc file */
struct pktgen_thread *pg_thread;/* the owner */
- struct list_head list; /* Used for chaining in the thread's run-queue */
+ struct list_head list; /* chaining in the thread's run-queue */
- int running; /* if this changes to false, the test will stop */
+ int running; /* if 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.
__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 */
+ __u64 errors; /* Errors when trying to transmit,
+ pkts will be re-sent */
/* runtime counters relating to clone_skb */
__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.
+ * Or a failed transmit of some sort?
+ * This will keep sequence numbers in order
*/
ktime_t next_tx;
ktime_t started_at;
__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.
+ 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.
+ * 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 */
__u16 udp_dst_max; /* exclusive, dest UDP port */
/* DSCP + ECN */
- __u8 tos; /* six most significant bits of (former) IPv4 TOS are for dscp codepoint */
- __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6 (see RFC 3260, sec. 4) */
+ __u8 tos; /* six MSB of (former) IPv4 TOS
+ are for dscp codepoint */
+ __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
+ (see RFC 3260, sec. 4) */
/* MPLS */
unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
__u32 cur_src_mac_offset;
__be32 cur_saddr;
__be32 cur_daddr;
+ __u16 ip_id;
__u16 cur_udp_dst;
__u16 cur_udp_src;
__u16 cur_queue_map;
*/
__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
+ struct sk_buff *skb; /* skb we are to transmit next, 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 net_device *odev; /* The out-going device.
+ * Note that the device should have it's
+ * pg_info pointer pointing back to this
+ * device.
+ * 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) */
};
struct pktgen_thread {
- spinlock_t if_lock;
+ spinlock_t if_lock; /* for list of devices */
struct list_head if_list; /* All device here */
struct list_head th_list;
struct task_struct *tsk;
char result[512];
- /* Field for thread to receive "posted" events terminate, stop ifs etc. */
+ /* Field for thread to receive "posted" events terminate,
+ stop ifs etc. */
u32 control;
int cpu;
return cmp1.tv64 < cmp2.tv64;
}
-static const char version[] __initconst = VERSION;
+static const char version[] =
+ "pktgen " VERSION ": Packet Generator for packet performance testing.\n";
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 int pgctrl_show(struct seq_file *seq, void *v)
{
- seq_puts(seq, VERSION);
+ 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];
" daddr: %s min_daddr: %s max_daddr: %s\n", b1,
b2, b3);
- } else
+ } else {
+ seq_printf(seq,
+ " dst_min: %s dst_max: %s\n",
+ pkt_dev->dst_min, pkt_dev->dst_max);
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);
+ " src_min: %s src_max: %s\n",
+ pkt_dev->src_min, pkt_dev->src_max);
+ }
seq_puts(seq, " src_mac: ");
seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
seq_printf(seq,
- " udp_src_min: %d udp_src_max: %d udp_dst_min: %d udp_dst_max: %d\n",
+ " 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);
i == pkt_dev->nr_labels-1 ? "\n" : ", ");
}
- if (pkt_dev->vlan_id != 0xffff) {
+ if (pkt_dev->vlan_id != 0xffff)
seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
- pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
- }
+ pkt_dev->vlan_id, pkt_dev->vlan_p,
+ pkt_dev->vlan_cfi);
- if (pkt_dev->svlan_id != 0xffff) {
+ if (pkt_dev->svlan_id != 0xffff)
seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
- pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
- }
+ pkt_dev->svlan_id, pkt_dev->svlan_p,
+ pkt_dev->svlan_cfi);
- if (pkt_dev->tos) {
+ if (pkt_dev->tos)
seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
- }
- if (pkt_dev->traffic_class) {
+ if (pkt_dev->traffic_class)
seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
- }
seq_printf(seq, " Flags: ");
}
-static int hex32_arg(const char __user *user_buffer, unsigned long maxlen, __u32 *num)
+static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
+ __u32 *num)
{
int i = 0;
*num = 0;
/* 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;
if (!strcmp(name, "min_pkt_size")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value < 14 + 20 + 8)
value = 14 + 20 + 8;
if (!strcmp(name, "max_pkt_size")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value < 14 + 20 + 8)
value = 14 + 20 + 8;
if (!strcmp(name, "pkt_size")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value < 14 + 20 + 8)
value = 14 + 20 + 8;
if (!strcmp(name, "debug")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
debug = value;
sprintf(pg_result, "OK: debug=%u", debug);
if (!strcmp(name, "frags")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
pkt_dev->nfrags = value;
sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
}
if (!strcmp(name, "delay")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value == 0x7FFFFFFF)
pkt_dev->delay = ULLONG_MAX;
else
- pkt_dev->delay = (u64)value * NSEC_PER_USEC;
+ pkt_dev->delay = (u64)value;
sprintf(pg_result, "OK: delay=%llu",
(unsigned long long) pkt_dev->delay);
}
if (!strcmp(name, "udp_src_min")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value != pkt_dev->udp_src_min) {
pkt_dev->udp_src_min = value;
}
if (!strcmp(name, "udp_dst_min")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value != pkt_dev->udp_dst_min) {
pkt_dev->udp_dst_min = value;
}
if (!strcmp(name, "udp_src_max")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value != pkt_dev->udp_src_max) {
pkt_dev->udp_src_max = value;
}
if (!strcmp(name, "udp_dst_max")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value != pkt_dev->udp_dst_max) {
pkt_dev->udp_dst_max = value;
}
if (!strcmp(name, "clone_skb")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
pkt_dev->clone_skb = value;
}
if (!strcmp(name, "count")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
pkt_dev->count = value;
sprintf(pg_result, "OK: count=%llu",
}
if (!strcmp(name, "src_mac_count")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (pkt_dev->src_mac_count != value) {
pkt_dev->src_mac_count = value;
}
if (!strcmp(name, "dst_mac_count")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (pkt_dev->dst_mac_count != value) {
pkt_dev->dst_mac_count = value;
char f[32];
memset(f, 0, 32);
len = strn_len(&user_buffer[i], sizeof(f) - 1);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
if (copy_from_user(f, &user_buffer[i], len))
return -EFAULT;
i += len;
}
if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
- if (len < 0) {
+ if (len < 0)
return len;
- }
if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
}
if (!strcmp(name, "dst_max")) {
len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
}
if (!strcmp(name, "src_min")) {
len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
buf[len] = 0;
}
if (!strcmp(name, "src_max")) {
len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
if (copy_from_user(buf, &user_buffer[i], len))
return -EFAULT;
buf[len] = 0;
memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
memset(valstr, 0, sizeof(valstr));
if (copy_from_user(valstr, &user_buffer[i], len))
return -EFAULT;
memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
memset(valstr, 0, sizeof(valstr));
if (copy_from_user(valstr, &user_buffer[i], len))
return -EFAULT;
if (!strcmp(name, "flows")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value > MAX_CFLOWS)
value = MAX_CFLOWS;
if (!strcmp(name, "flowlen")) {
len = num_arg(&user_buffer[i], 10, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
pkt_dev->lflow = value;
sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
if (!strcmp(name, "queue_map_min")) {
len = num_arg(&user_buffer[i], 5, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
pkt_dev->queue_map_min = value;
sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
if (!strcmp(name, "queue_map_max")) {
len = num_arg(&user_buffer[i], 5, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
pkt_dev->queue_map_max = value;
sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
if (!strcmp(name, "vlan_id")) {
len = num_arg(&user_buffer[i], 4, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (value <= 4095) {
pkt_dev->vlan_id = value; /* turn on VLAN */
if (!strcmp(name, "vlan_p")) {
len = num_arg(&user_buffer[i], 1, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
pkt_dev->vlan_p = value;
if (!strcmp(name, "vlan_cfi")) {
len = num_arg(&user_buffer[i], 1, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
pkt_dev->vlan_cfi = value;
if (!strcmp(name, "svlan_id")) {
len = num_arg(&user_buffer[i], 4, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
pkt_dev->svlan_id = value; /* turn on SVLAN */
if (!strcmp(name, "svlan_p")) {
len = num_arg(&user_buffer[i], 1, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
pkt_dev->svlan_p = value;
if (!strcmp(name, "svlan_cfi")) {
len = num_arg(&user_buffer[i], 1, &value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
pkt_dev->svlan_cfi = value;
if (!strcmp(name, "tos")) {
__u32 tmp_value = 0;
len = hex32_arg(&user_buffer[i], 2, &tmp_value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (len == 2) {
pkt_dev->tos = tmp_value;
if (!strcmp(name, "traffic_class")) {
__u32 tmp_value = 0;
len = hex32_arg(&user_buffer[i], 2, &tmp_value);
- if (len < 0) {
+ if (len < 0)
return len;
- }
+
i += len;
if (len == 2) {
pkt_dev->traffic_class = tmp_value;
remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
- pkt_dev->entry = create_proc_entry(dev->name, 0600,
- pg_proc_dir);
+ pkt_dev->entry = proc_create_data(dev->name, 0600,
+ pg_proc_dir,
+ &pktgen_if_fops,
+ pkt_dev);
if (!pkt_dev->entry)
printk(KERN_ERR "pktgen: can't move proc "
" entry for '%s'\n", dev->name);
return NOTIFY_DONE;
}
-static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev, const char *ifname)
+static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
+ const char *ifname)
{
char b[IFNAMSIZ+5];
int i = 0;
- for(i=0; ifname[i] != '@'; i++) {
- if(i == IFNAMSIZ)
+ for (i = 0; ifname[i] != '@'; i++) {
+ if (i == IFNAMSIZ)
break;
b[i] = ifname[i];
printk(KERN_WARNING "pktgen: WARNING: Requested "
"queue_map_min (zero-based) (%d) exceeds valid range "
"[0 - %d] for (%d) queues on %s, resetting\n",
- pkt_dev->queue_map_min, (ntxq ?: 1)- 1, ntxq,
+ pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
pkt_dev->odev->name);
pkt_dev->queue_map_min = ntxq - 1;
}
printk(KERN_WARNING "pktgen: WARNING: Requested "
"queue_map_max (zero-based) (%d) exceeds valid range "
"[0 - %d] for (%d) queues on %s, resetting\n",
- pkt_dev->queue_map_max, (ntxq ?: 1)- 1, ntxq,
+ pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
pkt_dev->odev->name);
pkt_dev->queue_map_max = ntxq - 1;
}
*/
rcu_read_lock();
- if ((idev = __in6_dev_get(pkt_dev->odev)) != NULL) {
+ idev = __in6_dev_get(pkt_dev->odev);
+ if (idev) {
struct inet6_ifaddr *ifp;
read_lock_bh(&idev->lock);
static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
{
- ktime_t start;
- s32 remaining;
+ ktime_t start_time, end_time;
+ s64 remaining;
struct hrtimer_sleeper t;
hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
hrtimer_set_expires(&t.timer, spin_until);
remaining = ktime_to_us(hrtimer_expires_remaining(&t.timer));
- if (remaining <= 0)
+ if (remaining <= 0) {
+ pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
return;
+ }
- start = ktime_now();
+ start_time = ktime_now();
if (remaining < 100)
udelay(remaining); /* really small just spin */
else {
} while (t.task && pkt_dev->running && !signal_pending(current));
__set_current_state(TASK_RUNNING);
}
- pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), start));
+ end_time = ktime_now();
+
+ pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
+ pkt_dev->next_tx = ktime_add_ns(end_time, pkt_dev->delay);
}
static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
if (x) {
pkt_dev->flows[flow].x = x;
set_pkt_overhead(pkt_dev);
- pkt_dev->pkt_overhead+=x->props.header_len;
+ pkt_dev->pkt_overhead += x->props.header_len;
}
}
if (pkt_dev->flags & F_QUEUE_MAP_CPU)
pkt_dev->cur_queue_map = smp_processor_id();
- else if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
+ else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
__u16 t;
if (pkt_dev->flags & F_QUEUE_MAP_RND) {
t = random32() %
if (!(pkt_dev->flags & F_IPV6)) {
- if ((imn = ntohl(pkt_dev->saddr_min)) < (imx =
- ntohl(pkt_dev->
- saddr_max))) {
+ imn = ntohl(pkt_dev->saddr_min);
+ imx = ntohl(pkt_dev->saddr_max);
+ if (imn < imx) {
__u32 t;
if (pkt_dev->flags & F_IPSRC_RND)
t = random32() % (imx - imn) + imn;
else {
t = ntohl(pkt_dev->cur_saddr);
t++;
- if (t > imx) {
+ if (t > imx)
t = imn;
- }
+
}
pkt_dev->cur_saddr = htonl(t);
}
if (err)
goto error;
- x->curlft.bytes +=skb->len;
+ x->curlft.bytes += skb->len;
x->curlft.packets++;
error:
spin_unlock(&x->lock);
int ret;
__u8 *eth;
nhead = x->props.header_len - skb_headroom(skb);
- if (nhead >0) {
+ if (nhead > 0) {
ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
if (ret < 0) {
printk(KERN_ERR "Error expanding "
- "ipsec packet %d\n",ret);
+ "ipsec packet %d\n", ret);
goto err;
}
}
ret = pktgen_output_ipsec(skb, pkt_dev);
if (ret) {
printk(KERN_ERR "Error creating ipsec "
- "packet %d\n",ret);
+ "packet %d\n", ret);
goto err;
}
/* restore ll */
eth = (__u8 *) skb_push(skb, ETH_HLEN);
memcpy(eth, pkt_dev->hh, 12);
- *(u16 *) & eth[12] = protocol;
+ *(u16 *) ð[12] = protocol;
}
}
return 1;
static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
{
unsigned i;
- for (i = 0; i < pkt_dev->nr_labels; i++) {
+ for (i = 0; i < pkt_dev->nr_labels; i++)
*mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
- }
+
mpls--;
*mpls |= MPLS_STACK_BOTTOM;
}
iph->protocol = IPPROTO_UDP; /* UDP */
iph->saddr = pkt_dev->cur_saddr;
iph->daddr = pkt_dev->cur_daddr;
+ iph->id = htons(pkt_dev->ip_id);
+ pkt_dev->ip_id++;
iph->frag_off = 0;
iplen = 20 + 8 + datalen;
iph->tot_len = htons(iplen);
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
- if (pkt_dev->nfrags <= 0)
+ if (pkt_dev->nfrags <= 0) {
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
- else {
+ memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr));
+ } else {
int frags = pkt_dev->nfrags;
- int i;
+ int i, len;
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);
+ len = datalen - frags * PAGE_SIZE;
+ memset(skb_put(skb, len), 0, len);
datalen = frags * PAGE_SIZE;
}
i = 0;
while (datalen > 0) {
- struct page *page = alloc_pages(GFP_KERNEL, 0);
+ struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
skb_shinfo(skb)->frags[i].page = page;
skb_shinfo(skb)->frags[i].page_offset = 0;
skb_shinfo(skb)->frags[i].size =
}
}
- /* 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;
udph = udp_hdr(skb);
memcpy(eth, pkt_dev->hh, 12);
- *(__be16 *) & eth[12] = protocol;
+ *(__be16 *) ð[12] = protocol;
/* Eth + IPh + UDPh + mpls */
datalen = pkt_dev->cur_pkt_size - 14 -
}
}
- /* Stamp the time, and sequence number, convert them to network byte order */
- /* should we update cloned packets too ? */
+ /* Stamp the time, and sequence number,
+ * convert them to network byte order
+ * should we update cloned packets too ?
+ */
if (pgh) {
struct timeval timestamp;
mutex_unlock(&pktgen_thread_lock);
- schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
+ /* Propagate thread->control */
+ schedule_timeout_interruptible(msecs_to_jiffies(125));
pktgen_wait_all_threads_run();
}
mutex_unlock(&pktgen_thread_lock);
- schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
+ /* Propagate thread->control */
+ schedule_timeout_interruptible(msecs_to_jiffies(125));
pktgen_wait_all_threads_run();
}
mutex_unlock(&pktgen_thread_lock);
}
-static void idle(struct pktgen_dev *pkt_dev)
+static void pktgen_resched(struct pktgen_dev *pkt_dev)
{
ktime_t idle_start = ktime_now();
+ schedule();
+ pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
+}
- if (need_resched())
- schedule();
- else
- cpu_relax();
+static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
+{
+ ktime_t idle_start = ktime_now();
+
+ while (atomic_read(&(pkt_dev->skb->users)) != 1) {
+ if (signal_pending(current))
+ break;
+ if (need_resched())
+ pktgen_resched(pkt_dev);
+ else
+ cpu_relax();
+ }
pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
}
-
static void pktgen_xmit(struct pktgen_dev *pkt_dev)
{
struct net_device *odev = pkt_dev->odev;
- int (*xmit)(struct sk_buff *, struct net_device *)
+ netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
= odev->netdev_ops->ndo_start_xmit;
struct netdev_queue *txq;
u16 queue_map;
int ret;
- if (pkt_dev->delay) {
- spin(pkt_dev, pkt_dev->next_tx);
-
- /* This is max DELAY, this has special meaning of
- * "never transmit"
- */
- if (pkt_dev->delay == ULLONG_MAX) {
- pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
- return;
- }
- }
-
- if (!pkt_dev->skb) {
- set_cur_queue_map(pkt_dev);
- queue_map = pkt_dev->cur_queue_map;
- } else {
- queue_map = skb_get_queue_mapping(pkt_dev->skb);
+ /* If device is offline, then don't send */
+ if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
+ pktgen_stop_device(pkt_dev);
+ return;
}
- txq = netdev_get_tx_queue(odev, queue_map);
- /* Did we saturate the queue already? */
- if (netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)) {
- /* If device is down, then all queues are permnantly frozen */
- if (netif_running(odev))
- idle(pkt_dev);
- else
- pktgen_stop_device(pkt_dev);
+ /* This is max DELAY, this has special meaning of
+ * "never transmit"
+ */
+ if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
+ pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
return;
}
+ /* If no skb or clone count exhausted then get new one */
if (!pkt_dev->skb || (pkt_dev->last_ok &&
++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
/* build a new pkt */
pkt_dev->clone_count = 0; /* reset counter */
}
- /* fill_packet() might have changed the queue */
+ if (pkt_dev->delay && pkt_dev->last_ok)
+ spin(pkt_dev, pkt_dev->next_tx);
+
queue_map = skb_get_queue_mapping(pkt_dev->skb);
txq = netdev_get_tx_queue(odev, queue_map);
__netif_tx_lock_bh(txq);
- if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)))
- pkt_dev->last_ok = 0;
- else {
- atomic_inc(&(pkt_dev->skb->users));
+ atomic_inc(&(pkt_dev->skb->users));
- retry_now:
+ if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq)))
+ ret = NETDEV_TX_BUSY;
+ else
ret = (*xmit)(pkt_dev->skb, odev);
- switch (ret) {
- case NETDEV_TX_OK:
- txq_trans_update(txq);
- pkt_dev->last_ok = 1;
- pkt_dev->sofar++;
- pkt_dev->seq_num++;
- pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
- break;
- case NETDEV_TX_LOCKED:
- cpu_relax();
- goto retry_now;
- default: /* Drivers are not supposed to return other values! */
- if (net_ratelimit())
- pr_info("pktgen: %s xmit error: %d\n",
- odev->name, ret);
- pkt_dev->errors++;
- /* fallthru */
- case NETDEV_TX_BUSY:
- /* Retry it next time */
- atomic_dec(&(pkt_dev->skb->users));
- pkt_dev->last_ok = 0;
- }
-
- if (pkt_dev->delay)
- pkt_dev->next_tx = ktime_add_ns(ktime_now(),
- pkt_dev->delay);
+
+ switch (ret) {
+ case NETDEV_TX_OK:
+ txq_trans_update(txq);
+ pkt_dev->last_ok = 1;
+ pkt_dev->sofar++;
+ pkt_dev->seq_num++;
+ pkt_dev->tx_bytes += pkt_dev->cur_pkt_size;
+ break;
+ default: /* Drivers are not supposed to return other values! */
+ if (net_ratelimit())
+ pr_info("pktgen: %s xmit error: %d\n",
+ odev->name, ret);
+ pkt_dev->errors++;
+ /* fallthru */
+ case NETDEV_TX_LOCKED:
+ case NETDEV_TX_BUSY:
+ /* Retry it next time */
+ atomic_dec(&(pkt_dev->skb->users));
+ pkt_dev->last_ok = 0;
}
__netif_tx_unlock_bh(txq);
/* 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) {
- ktime_t idle_start = ktime_now();
- while (atomic_read(&(pkt_dev->skb->users)) != 1) {
- if (signal_pending(current)) {
- break;
- }
- schedule();
- }
- pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(),
- idle_start));
- }
+ pktgen_wait_for_skb(pkt_dev);
/* Done with this */
pktgen_stop_device(pkt_dev);
init_waitqueue_head(&t->queue);
complete(&t->start_done);
- pr_debug("pktgen: starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
+ pr_debug("pktgen: starting pktgen/%d: pid=%d\n",
+ cpu, task_pid_nr(current));
set_current_state(TASK_INTERRUPTIBLE);
while (!kthread_should_stop()) {
pkt_dev = next_to_run(t);
- if (!pkt_dev &&
- (t->control & (T_STOP | T_RUN | T_REMDEVALL | T_REMDEV))
- == 0) {
- prepare_to_wait(&(t->queue), &wait,
- TASK_INTERRUPTIBLE);
- schedule_timeout(HZ / 10);
- finish_wait(&(t->queue), &wait);
+ if (unlikely(!pkt_dev && t->control == 0)) {
+ wait_event_interruptible_timeout(t->queue,
+ t->control != 0,
+ HZ/10);
+ continue;
}
__set_current_state(TASK_RUNNING);
- if (pkt_dev)
+ if (likely(pkt_dev)) {
pktgen_xmit(pkt_dev);
+ if (need_resched())
+ pktgen_resched(pkt_dev);
+ else
+ cpu_relax();
+ }
+
if (t->control & T_STOP) {
pktgen_stop(t);
t->control &= ~(T_STOP);
module_init(pg_init);
module_exit(pg_cleanup);
-MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se");
+MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
MODULE_DESCRIPTION("Packet Generator tool");
MODULE_LICENSE("GPL");
+MODULE_VERSION(VERSION);
module_param(pg_count_d, int, 0);
+MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
module_param(pg_delay_d, int, 0);
+MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
module_param(pg_clone_skb_d, int, 0);
+MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff