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-rw-r--r--net/core/pktgen.c76
1 files changed, 70 insertions, 6 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 3284605f2ec7..a756847e3814 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -168,7 +168,7 @@
#include <asm/div64.h> /* do_div */
#include <asm/timex.h>
-#define VERSION "pktgen v2.69: Packet Generator for packet performance testing.\n"
+#define VERSION "pktgen v2.70: Packet Generator for packet performance testing.\n"
#define IP_NAME_SZ 32
#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
@@ -189,6 +189,7 @@
#define F_FLOW_SEQ (1<<11) /* Sequential flows */
#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
+#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
/* Thread control flag bits */
#define T_TERMINATE (1<<0)
@@ -621,6 +622,9 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
if (pkt_dev->flags & F_QUEUE_MAP_RND)
seq_printf(seq, "QUEUE_MAP_RND ");
+ if (pkt_dev->flags & F_QUEUE_MAP_CPU)
+ seq_printf(seq, "QUEUE_MAP_CPU ");
+
if (pkt_dev->cflows) {
if (pkt_dev->flags & F_FLOW_SEQ)
seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
@@ -1134,6 +1138,12 @@ static ssize_t pktgen_if_write(struct file *file,
else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
pkt_dev->flags &= ~F_QUEUE_MAP_RND;
+
+ else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
+ pkt_dev->flags |= F_QUEUE_MAP_CPU;
+
+ else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
+ pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
#ifdef CONFIG_XFRM
else if (strcmp(f, "IPSEC") == 0)
pkt_dev->flags |= F_IPSEC_ON;
@@ -1895,6 +1905,23 @@ static int pktgen_device_event(struct notifier_block *unused,
return NOTIFY_DONE;
}
+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)
+ break;
+
+ b[i] = ifname[i];
+ }
+ b[i] = 0;
+
+ return dev_get_by_name(&init_net, b);
+}
+
+
/* Associate pktgen_dev with a device. */
static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
@@ -1908,7 +1935,7 @@ static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
pkt_dev->odev = NULL;
}
- odev = dev_get_by_name(&init_net, ifname);
+ odev = pktgen_dev_get_by_name(pkt_dev, ifname);
if (!odev) {
printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
return -ENODEV;
@@ -1934,6 +1961,8 @@ static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
*/
static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
{
+ int ntxq;
+
if (!pkt_dev->odev) {
printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
"setup_inject.\n");
@@ -1942,6 +1971,33 @@ static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
return;
}
+ /* make sure that we don't pick a non-existing transmit queue */
+ ntxq = pkt_dev->odev->real_num_tx_queues;
+ if (ntxq <= num_online_cpus() && (pkt_dev->flags & F_QUEUE_MAP_CPU)) {
+ printk(KERN_WARNING "pktgen: WARNING: QUEUE_MAP_CPU "
+ "disabled because CPU count (%d) exceeds number ",
+ num_online_cpus());
+ printk(KERN_WARNING "pktgen: WARNING: of tx queues "
+ "(%d) on %s \n", ntxq, pkt_dev->odev->name);
+ pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
+ }
+ if (ntxq <= pkt_dev->queue_map_min) {
+ printk(KERN_WARNING "pktgen: WARNING: Requested "
+ "queue_map_min (%d) exceeds number of tx\n",
+ pkt_dev->queue_map_min);
+ printk(KERN_WARNING "pktgen: WARNING: queues (%d) on "
+ "%s, resetting\n", ntxq, pkt_dev->odev->name);
+ pkt_dev->queue_map_min = ntxq - 1;
+ }
+ if (ntxq <= pkt_dev->queue_map_max) {
+ printk(KERN_WARNING "pktgen: WARNING: Requested "
+ "queue_map_max (%d) exceeds number of tx\n",
+ pkt_dev->queue_map_max);
+ printk(KERN_WARNING "pktgen: WARNING: queues (%d) on "
+ "%s, resetting\n", ntxq, pkt_dev->odev->name);
+ pkt_dev->queue_map_max = ntxq - 1;
+ }
+
/* Default to the interface's mac if not explicitly set. */
if (is_zero_ether_addr(pkt_dev->src_mac))
@@ -2085,15 +2141,19 @@ static inline int f_pick(struct pktgen_dev *pkt_dev)
if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
/* reset time */
pkt_dev->flows[flow].count = 0;
+ pkt_dev->flows[flow].flags = 0;
pkt_dev->curfl += 1;
if (pkt_dev->curfl >= pkt_dev->cflows)
pkt_dev->curfl = 0; /*reset */
}
} else {
flow = random32() % pkt_dev->cflows;
+ pkt_dev->curfl = flow;
- if (pkt_dev->flows[flow].count > pkt_dev->lflow)
+ if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
pkt_dev->flows[flow].count = 0;
+ pkt_dev->flows[flow].flags = 0;
+ }
}
return pkt_dev->curfl;
@@ -2125,7 +2185,11 @@ static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
#endif
static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
{
- if (pkt_dev->queue_map_min < pkt_dev->queue_map_max) {
+
+ 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) {
__u16 t;
if (pkt_dev->flags & F_QUEUE_MAP_RND) {
t = random32() %
@@ -2162,7 +2226,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
mc = random32() % pkt_dev->src_mac_count;
else {
mc = pkt_dev->cur_src_mac_offset++;
- if (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;
}
@@ -2189,7 +2253,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
else {
mc = pkt_dev->cur_dst_mac_offset++;
- if (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;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.