[PKTGEN]: vlan support
The attached patch allows pktgen to produce 802.1Q and Q-in-Q tagged frames. I have used it for stress test a bridge and seems ok to me. Unfortunately I have no access to net-2.6.x git tree so the diff is against 2.6.17.13. Signed-off-by: Francesco Fondelli <francesco.fondelli@gmail.com> Acked-by: Steven Whitehouse <steve@chygwyn.com> Signed-off-by: Robert Olsson <robert.olsson@its.uu.se> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Francesco Fondelli
David S. Miller
parent
658270a0a4
commit
34954ddc4f
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@ -109,6 +109,8 @@
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*
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* MPLS support by Steven Whitehouse <steve@chygwyn.com>
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*
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* 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
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*
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*/
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#include <linux/sys.h>
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#include <linux/types.h>
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@ -137,6 +139,7 @@
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#include <linux/inetdevice.h>
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#include <linux/rtnetlink.h>
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#include <linux/if_arp.h>
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#include <linux/if_vlan.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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@ -178,6 +181,8 @@
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#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
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#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
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#define F_MPLS_RND (1<<8) /* Random MPLS labels */
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#define F_VID_RND (1<<9) /* Random VLAN ID */
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#define F_SVID_RND (1<<10) /* Random SVLAN ID */
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/* Thread control flag bits */
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#define T_TERMINATE (1<<0)
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@ -198,6 +203,9 @@ static struct proc_dir_entry *pg_proc_dir = NULL;
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#define MAX_CFLOWS 65536
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#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
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#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
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struct flow_state {
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__u32 cur_daddr;
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int count;
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@ -288,6 +296,15 @@ struct pktgen_dev {
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unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
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__be32 labels[MAX_MPLS_LABELS];
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/* VLAN/SVLAN (802.1Q/Q-in-Q) */
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__u8 vlan_p;
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__u8 vlan_cfi;
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__u16 vlan_id; /* 0xffff means no vlan tag */
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__u8 svlan_p;
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__u8 svlan_cfi;
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__u16 svlan_id; /* 0xffff means no svlan tag */
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__u32 src_mac_count; /* How many MACs to iterate through */
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__u32 dst_mac_count; /* How many MACs to iterate through */
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@ -644,6 +661,16 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
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i == pkt_dev->nr_labels-1 ? "\n" : ", ");
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}
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if (pkt_dev->vlan_id != 0xffff) {
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seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
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pkt_dev->vlan_id, pkt_dev->vlan_p, pkt_dev->vlan_cfi);
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}
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if (pkt_dev->svlan_id != 0xffff) {
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seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
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pkt_dev->svlan_id, pkt_dev->svlan_p, pkt_dev->svlan_cfi);
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}
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seq_printf(seq, " Flags: ");
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if (pkt_dev->flags & F_IPV6)
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@ -673,6 +700,12 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
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if (pkt_dev->flags & F_MACDST_RND)
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seq_printf(seq, "MACDST_RND ");
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if (pkt_dev->flags & F_VID_RND)
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seq_printf(seq, "VID_RND ");
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if (pkt_dev->flags & F_SVID_RND)
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seq_printf(seq, "SVID_RND ");
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seq_puts(seq, "\n");
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sa = pkt_dev->started_at;
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@ -1140,6 +1173,18 @@ static ssize_t pktgen_if_write(struct file *file,
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else if (strcmp(f, "!MPLS_RND") == 0)
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pkt_dev->flags &= ~F_MPLS_RND;
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else if (strcmp(f, "VID_RND") == 0)
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pkt_dev->flags |= F_VID_RND;
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else if (strcmp(f, "!VID_RND") == 0)
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pkt_dev->flags &= ~F_VID_RND;
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else if (strcmp(f, "SVID_RND") == 0)
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pkt_dev->flags |= F_SVID_RND;
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else if (strcmp(f, "!SVID_RND") == 0)
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pkt_dev->flags &= ~F_SVID_RND;
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else {
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sprintf(pg_result,
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"Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
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@ -1445,6 +1490,128 @@ static ssize_t pktgen_if_write(struct file *file,
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offset += sprintf(pg_result + offset,
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"%08x%s", ntohl(pkt_dev->labels[n]),
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n == pkt_dev->nr_labels-1 ? "" : ",");
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if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
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pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
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pkt_dev->svlan_id = 0xffff;
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if (debug)
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printk("pktgen: VLAN/SVLAN auto turned off\n");
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}
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return count;
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}
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if (!strcmp(name, "vlan_id")) {
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len = num_arg(&user_buffer[i], 4, &value);
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if (len < 0) {
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return len;
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}
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i += len;
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if (value <= 4095) {
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pkt_dev->vlan_id = value; /* turn on VLAN */
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if (debug)
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printk("pktgen: VLAN turned on\n");
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if (debug && pkt_dev->nr_labels)
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printk("pktgen: MPLS auto turned off\n");
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pkt_dev->nr_labels = 0; /* turn off MPLS */
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sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
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} else {
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pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
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pkt_dev->svlan_id = 0xffff;
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if (debug)
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printk("pktgen: VLAN/SVLAN turned off\n");
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}
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return count;
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}
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if (!strcmp(name, "vlan_p")) {
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len = num_arg(&user_buffer[i], 1, &value);
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if (len < 0) {
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return len;
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}
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i += len;
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if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
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pkt_dev->vlan_p = value;
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sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
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} else {
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sprintf(pg_result, "ERROR: vlan_p must be 0-7");
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}
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return count;
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}
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if (!strcmp(name, "vlan_cfi")) {
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len = num_arg(&user_buffer[i], 1, &value);
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if (len < 0) {
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return len;
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}
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i += len;
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if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
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pkt_dev->vlan_cfi = value;
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sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
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} else {
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sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
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}
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return count;
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}
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if (!strcmp(name, "svlan_id")) {
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len = num_arg(&user_buffer[i], 4, &value);
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if (len < 0) {
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return len;
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}
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i += len;
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if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
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pkt_dev->svlan_id = value; /* turn on SVLAN */
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if (debug)
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printk("pktgen: SVLAN turned on\n");
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if (debug && pkt_dev->nr_labels)
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printk("pktgen: MPLS auto turned off\n");
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pkt_dev->nr_labels = 0; /* turn off MPLS */
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sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
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} else {
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pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
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pkt_dev->svlan_id = 0xffff;
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if (debug)
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printk("pktgen: VLAN/SVLAN turned off\n");
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}
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return count;
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}
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if (!strcmp(name, "svlan_p")) {
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len = num_arg(&user_buffer[i], 1, &value);
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if (len < 0) {
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return len;
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}
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i += len;
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if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
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pkt_dev->svlan_p = value;
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sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
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} else {
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sprintf(pg_result, "ERROR: svlan_p must be 0-7");
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}
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return count;
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}
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if (!strcmp(name, "svlan_cfi")) {
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len = num_arg(&user_buffer[i], 1, &value);
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if (len < 0) {
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return len;
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}
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i += len;
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if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
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pkt_dev->svlan_cfi = value;
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sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
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} else {
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sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
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}
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return count;
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}
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@ -1949,6 +2116,14 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
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htonl(0x000fffff));
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}
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if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
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pkt_dev->vlan_id = pktgen_random() % 4096;
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}
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if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
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pkt_dev->svlan_id = pktgen_random() % 4096;
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}
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if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
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if (pkt_dev->flags & F_UDPSRC_RND)
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pkt_dev->cur_udp_src =
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@ -2092,10 +2267,18 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
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struct pktgen_hdr *pgh = NULL;
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__be16 protocol = __constant_htons(ETH_P_IP);
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__be32 *mpls;
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__be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
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__be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
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__be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
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__be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
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if (pkt_dev->nr_labels)
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protocol = __constant_htons(ETH_P_MPLS_UC);
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if (pkt_dev->vlan_id != 0xffff)
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protocol = __constant_htons(ETH_P_8021Q);
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/* Update any of the values, used when we're incrementing various
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* fields.
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*/
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@ -2103,7 +2286,9 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
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datalen = (odev->hard_header_len + 16) & ~0xf;
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skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen +
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pkt_dev->nr_labels*sizeof(u32), GFP_ATOMIC);
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pkt_dev->nr_labels*sizeof(u32) +
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VLAN_TAG_SIZE(pkt_dev) + SVLAN_TAG_SIZE(pkt_dev),
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GFP_ATOMIC);
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if (!skb) {
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sprintf(pkt_dev->result, "No memory");
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return NULL;
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@ -2116,6 +2301,24 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
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mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
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if (pkt_dev->nr_labels)
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mpls_push(mpls, pkt_dev);
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if (pkt_dev->vlan_id != 0xffff) {
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if(pkt_dev->svlan_id != 0xffff) {
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svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
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*svlan_tci = htons(pkt_dev->svlan_id);
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*svlan_tci |= pkt_dev->svlan_p << 5;
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*svlan_tci |= pkt_dev->svlan_cfi << 4;
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svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
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*svlan_encapsulated_proto = __constant_htons(ETH_P_8021Q);
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}
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vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
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*vlan_tci = htons(pkt_dev->vlan_id);
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*vlan_tci |= pkt_dev->vlan_p << 5;
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*vlan_tci |= pkt_dev->vlan_cfi << 4;
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vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
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*vlan_encapsulated_proto = __constant_htons(ETH_P_IP);
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}
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iph = (struct iphdr *)skb_put(skb, sizeof(struct iphdr));
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udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
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@ -2124,7 +2327,7 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
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/* Eth + IPh + UDPh + mpls */
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datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
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pkt_dev->nr_labels*sizeof(u32);
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pkt_dev->nr_labels*sizeof(u32) - VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
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if (datalen < sizeof(struct pktgen_hdr))
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datalen = sizeof(struct pktgen_hdr);
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@ -2146,7 +2349,8 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
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iph->check = 0;
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iph->check = ip_fast_csum((void *)iph, iph->ihl);
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skb->protocol = protocol;
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skb->mac.raw = ((u8 *) iph) - 14 - pkt_dev->nr_labels*sizeof(u32);
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skb->mac.raw = ((u8 *) iph) - 14 - pkt_dev->nr_labels*sizeof(u32) -
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VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
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skb->dev = odev;
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skb->pkt_type = PACKET_HOST;
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skb->nh.iph = iph;
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@ -2218,7 +2422,6 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
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pgh->tv_sec = htonl(timestamp.tv_sec);
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pgh->tv_usec = htonl(timestamp.tv_usec);
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}
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pkt_dev->seq_num++;
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return skb;
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}
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@ -2402,17 +2605,26 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
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struct pktgen_hdr *pgh = NULL;
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__be16 protocol = __constant_htons(ETH_P_IPV6);
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__be32 *mpls;
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__be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
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__be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
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__be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
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__be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
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if (pkt_dev->nr_labels)
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protocol = __constant_htons(ETH_P_MPLS_UC);
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if (pkt_dev->vlan_id != 0xffff)
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protocol = __constant_htons(ETH_P_8021Q);
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/* Update any of the values, used when we're incrementing various
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* fields.
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*/
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mod_cur_headers(pkt_dev);
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skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 +
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pkt_dev->nr_labels*sizeof(u32), GFP_ATOMIC);
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pkt_dev->nr_labels*sizeof(u32) +
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VLAN_TAG_SIZE(pkt_dev) + SVLAN_TAG_SIZE(pkt_dev),
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GFP_ATOMIC);
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if (!skb) {
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sprintf(pkt_dev->result, "No memory");
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return NULL;
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@ -2425,16 +2637,34 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
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mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
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if (pkt_dev->nr_labels)
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mpls_push(mpls, pkt_dev);
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if (pkt_dev->vlan_id != 0xffff) {
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if(pkt_dev->svlan_id != 0xffff) {
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svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
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*svlan_tci = htons(pkt_dev->svlan_id);
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*svlan_tci |= pkt_dev->svlan_p << 5;
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*svlan_tci |= pkt_dev->svlan_cfi << 4;
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svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
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*svlan_encapsulated_proto = __constant_htons(ETH_P_8021Q);
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}
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vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
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*vlan_tci = htons(pkt_dev->vlan_id);
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*vlan_tci |= pkt_dev->vlan_p << 5;
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*vlan_tci |= pkt_dev->vlan_cfi << 4;
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vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
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*vlan_encapsulated_proto = __constant_htons(ETH_P_IPV6);
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}
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iph = (struct ipv6hdr *)skb_put(skb, sizeof(struct ipv6hdr));
|
||||
udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
|
||||
|
||||
memcpy(eth, pkt_dev->hh, 12);
|
||||
*(u16 *) & eth[12] = __constant_htons(ETH_P_IPV6);
|
||||
*(u16 *) & eth[12] = protocol;
|
||||
|
||||
/* Eth + IPh + UDPh + mpls */
|
||||
datalen = pkt_dev->cur_pkt_size - 14 -
|
||||
sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
|
||||
pkt_dev->nr_labels*sizeof(u32);
|
||||
pkt_dev->nr_labels*sizeof(u32) - VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
|
||||
|
||||
if (datalen < sizeof(struct pktgen_hdr)) {
|
||||
datalen = sizeof(struct pktgen_hdr);
|
||||
|
|
@ -2458,7 +2688,8 @@ 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 - pkt_dev->nr_labels*sizeof(u32);
|
||||
skb->mac.raw = ((u8 *) iph) - 14 - pkt_dev->nr_labels*sizeof(u32) -
|
||||
VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
|
||||
skb->protocol = protocol;
|
||||
skb->dev = odev;
|
||||
skb->pkt_type = PACKET_HOST;
|
||||
|
|
@ -2531,7 +2762,7 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
|
|||
pgh->tv_sec = htonl(timestamp.tv_sec);
|
||||
pgh->tv_usec = htonl(timestamp.tv_usec);
|
||||
}
|
||||
pkt_dev->seq_num++;
|
||||
/* pkt_dev->seq_num++; FF: you really mean this? */
|
||||
|
||||
return skb;
|
||||
}
|
||||
|
|
@ -3177,6 +3408,13 @@ static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
|
|||
pkt_dev->udp_dst_min = 9;
|
||||
pkt_dev->udp_dst_max = 9;
|
||||
|
||||
pkt_dev->vlan_p = 0;
|
||||
pkt_dev->vlan_cfi = 0;
|
||||
pkt_dev->vlan_id = 0xffff;
|
||||
pkt_dev->svlan_p = 0;
|
||||
pkt_dev->svlan_cfi = 0;
|
||||
pkt_dev->svlan_id = 0xffff;
|
||||
|
||||
strncpy(pkt_dev->ifname, ifname, IFNAMSIZ);
|
||||
|
||||
if (!pktgen_setup_dev(pkt_dev)) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue