#include <linux/module.h>
#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 <net/checksum.h>
#include <net/ipv6.h>
#include <net/addrconf.h>
+#ifdef CONFIG_XFRM
+#include <net/xfrm.h>
+#endif
#include <asm/byteorder.h>
#include <linux/rcupdate.h>
#include <asm/bitops.h>
#define F_MPLS_RND (1<<8) /* Random MPLS labels */
#define F_VID_RND (1<<9) /* Random VLAN ID */
#define F_SVID_RND (1<<10) /* Random SVLAN ID */
+#define F_FLOW_SEQ (1<<11) /* Sequential flows */
+#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
/* Thread control flag bits */
#define T_TERMINATE (1<<0)
struct flow_state {
__be32 cur_daddr;
int count;
+#ifdef CONFIG_XFRM
+ struct xfrm_state *x;
+#endif
+ __u32 flags;
};
+/* flow flag bits */
+#define F_INIT (1<<0) /* flow has been initialized */
+
struct pktgen_dev {
/*
* Try to keep frequent/infrequent used vars. separated.
int min_pkt_size; /* = ETH_ZLEN; */
int max_pkt_size; /* = ETH_ZLEN; */
+ int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
int nfrags;
__u32 delay_us; /* Default delay */
__u32 delay_ns;
unsigned cflows; /* Concurrent flows (config) */
unsigned lflow; /* Flow length (config) */
unsigned nflows; /* accumulated flows (stats) */
-
+ unsigned curfl; /* current sequenced flow (state)*/
+#ifdef CONFIG_XFRM
+ __u8 ipsmode; /* IPSEC mode (config) */
+ __u8 ipsproto; /* IPSEC type (config) */
+#endif
char result[512];
};
if (pkt_dev->nr_labels) {
unsigned i;
seq_printf(seq, " mpls: ");
- for(i = 0; i < pkt_dev->nr_labels; i++)
+ for (i = 0; i < pkt_dev->nr_labels; i++)
seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
i == pkt_dev->nr_labels-1 ? "\n" : ", ");
}
if (pkt_dev->flags & F_MPLS_RND)
seq_printf(seq, "MPLS_RND ");
+ if (pkt_dev->cflows) {
+ if (pkt_dev->flags & F_FLOW_SEQ)
+ seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
+ else
+ seq_printf(seq, "FLOW_RND ");
+ }
+
+#ifdef CONFIG_XFRM
+ if (pkt_dev->flags & F_IPSEC_ON)
+ seq_printf(seq, "IPSEC ");
+#endif
+
if (pkt_dev->flags & F_MACSRC_RND)
seq_printf(seq, "MACSRC_RND ");
int i = 0;
*num = 0;
- for(; i < maxlen; i++) {
+ for (; i < maxlen; i++) {
char c;
*num <<= 4;
if (get_user(c, &user_buffer[i]))
break;
default:
goto done;
- };
+ }
}
done:
return i;
break;
default:
break;
- };
+ }
}
done_str:
return i;
n++;
if (n >= MAX_MPLS_LABELS)
return -E2BIG;
- } while(c == ',');
+ } while (c == ',');
pkt_dev->nr_labels = n;
return i;
else if (strcmp(f, "!SVID_RND") == 0)
pkt_dev->flags &= ~F_SVID_RND;
+ else if (strcmp(f, "FLOW_SEQ") == 0)
+ pkt_dev->flags |= F_FLOW_SEQ;
+
+#ifdef CONFIG_XFRM
+ else if (strcmp(f, "IPSEC") == 0)
+ pkt_dev->flags |= F_IPSEC_ON;
+#endif
+
else if (strcmp(f, "!IPV6") == 0)
pkt_dev->flags &= ~F_IPV6;
"Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
f,
"IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
- "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND\n");
+ "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC\n");
return count;
}
sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
if (len < 0) { return len; }
i += len;
offset = sprintf(pg_result, "OK: mpls=");
- for(n = 0; n < pkt_dev->nr_labels; n++)
+ for (n = 0; n < pkt_dev->nr_labels; n++)
offset += sprintf(pg_result + offset,
"%08x%s", ntohl(pkt_dev->labels[n]),
n == pkt_dev->nr_labels-1 ? "" : ",");
case NETDEV_UNREGISTER:
pktgen_mark_device(dev->name);
break;
- };
+ }
return NOTIFY_DONE;
}
pkt_dev->idle_acc += now - start;
}
+static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
+{
+ pkt_dev->pkt_overhead = 0;
+ pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
+ pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
+ pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
+}
+
+static inline int f_seen(struct pktgen_dev *pkt_dev, int flow)
+{
+
+ if (pkt_dev->flows[flow].flags & F_INIT)
+ return 1;
+ else
+ return 0;
+}
+
+static inline int f_pick(struct pktgen_dev *pkt_dev)
+{
+ int flow = pkt_dev->curfl;
+
+ if (pkt_dev->flags & F_FLOW_SEQ) {
+ if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
+ /* reset time */
+ pkt_dev->flows[flow].count = 0;
+ pkt_dev->curfl += 1;
+ if (pkt_dev->curfl >= pkt_dev->cflows)
+ pkt_dev->curfl = 0; /*reset */
+ }
+ } else {
+ flow = random32() % pkt_dev->cflows;
+
+ if (pkt_dev->flows[flow].count > pkt_dev->lflow)
+ pkt_dev->flows[flow].count = 0;
+ }
+
+ return pkt_dev->curfl;
+}
+
+
+#ifdef CONFIG_XFRM
+/* If there was already an IPSEC SA, we keep it as is, else
+ * we go look for it ...
+*/
+inline
+void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
+{
+ struct xfrm_state *x = pkt_dev->flows[flow].x;
+ if (!x) {
+ /*slow path: we dont already have xfrm_state*/
+ x = xfrm_stateonly_find((xfrm_address_t *)&pkt_dev->cur_daddr,
+ (xfrm_address_t *)&pkt_dev->cur_saddr,
+ AF_INET,
+ pkt_dev->ipsmode,
+ pkt_dev->ipsproto, 0);
+ if (x) {
+ pkt_dev->flows[flow].x = x;
+ set_pkt_overhead(pkt_dev);
+ pkt_dev->pkt_overhead+=x->props.header_len;
+ }
+
+ }
+}
+#endif
/* Increment/randomize headers according to flags and current values
* for IP src/dest, UDP src/dst port, MAC-Addr src/dst
*/
__u32 imx;
int flow = 0;
- if (pkt_dev->cflows) {
- flow = random32() % pkt_dev->cflows;
-
- if (pkt_dev->flows[flow].count > pkt_dev->lflow)
- pkt_dev->flows[flow].count = 0;
- }
+ if (pkt_dev->cflows)
+ flow = f_pick(pkt_dev);
/* Deal with source MAC */
if (pkt_dev->src_mac_count > 1) {
if (pkt_dev->flags & F_MPLS_RND) {
unsigned i;
- for(i = 0; i < pkt_dev->nr_labels; i++)
+ for (i = 0; i < pkt_dev->nr_labels; i++)
if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
((__force __be32)random32() &
pkt_dev->cur_saddr = htonl(t);
}
- if (pkt_dev->cflows && pkt_dev->flows[flow].count != 0) {
+ if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
} else {
imn = ntohl(pkt_dev->daddr_min);
}
}
if (pkt_dev->cflows) {
+ pkt_dev->flows[flow].flags |= F_INIT;
pkt_dev->flows[flow].cur_daddr =
pkt_dev->cur_daddr;
+#ifdef CONFIG_XFRM
+ if (pkt_dev->flags & F_IPSEC_ON)
+ get_ipsec_sa(pkt_dev, flow);
+#endif
pkt_dev->nflows++;
}
}
pkt_dev->flows[flow].count++;
}
+
+#ifdef CONFIG_XFRM
+static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
+{
+ struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
+ int err = 0;
+ struct iphdr *iph;
+
+ if (!x)
+ return 0;
+ /* XXX: we dont support tunnel mode for now until
+ * we resolve the dst issue */
+ if (x->props.mode != XFRM_MODE_TRANSPORT)
+ return 0;
+
+ spin_lock(&x->lock);
+ iph = ip_hdr(skb);
+
+ err = x->mode->output(x, skb);
+ if (err)
+ goto error;
+ err = x->type->output(x, skb);
+ if (err)
+ goto error;
+
+ x->curlft.bytes +=skb->len;
+ x->curlft.packets++;
+ spin_unlock(&x->lock);
+
+error:
+ spin_unlock(&x->lock);
+ return err;
+}
+
+static inline void free_SAs(struct pktgen_dev *pkt_dev)
+{
+ if (pkt_dev->cflows) {
+ /* let go of the SAs if we have them */
+ int i = 0;
+ for (; i < pkt_dev->nflows; i++){
+ struct xfrm_state *x = pkt_dev->flows[i].x;
+ if (x) {
+ xfrm_state_put(x);
+ pkt_dev->flows[i].x = NULL;
+ }
+ }
+ }
+}
+
+static inline int process_ipsec(struct pktgen_dev *pkt_dev,
+ struct sk_buff *skb, __be16 protocol)
+{
+ if (pkt_dev->flags & F_IPSEC_ON) {
+ struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
+ int nhead = 0;
+ if (x) {
+ int ret;
+ __u8 *eth;
+ nhead = x->props.header_len - skb_headroom(skb);
+ if (nhead >0) {
+ ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
+ if (ret < 0) {
+ printk("Error expanding ipsec packet %d\n",ret);
+ return 0;
+ }
+ }
+
+ /* ipsec is not expecting ll header */
+ skb_pull(skb, ETH_HLEN);
+ ret = pktgen_output_ipsec(skb, pkt_dev);
+ if (ret) {
+ printk("Error creating ipsec packet %d\n",ret);
+ kfree_skb(skb);
+ return 0;
+ }
+ /* restore ll */
+ eth = (__u8 *) skb_push(skb, ETH_HLEN);
+ memcpy(eth, pkt_dev->hh, 12);
+ *(u16 *) & eth[12] = protocol;
+ }
+ }
+ return 1;
+}
+#endif
+
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--;
datalen = (odev->hard_header_len + 16) & ~0xf;
skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + datalen +
- pkt_dev->nr_labels*sizeof(u32) +
- VLAN_TAG_SIZE(pkt_dev) + SVLAN_TAG_SIZE(pkt_dev),
- GFP_ATOMIC);
+ pkt_dev->pkt_overhead, GFP_ATOMIC);
if (!skb) {
sprintf(pkt_dev->result, "No memory");
return NULL;
mpls_push(mpls, pkt_dev);
if (pkt_dev->vlan_id != 0xffff) {
- if(pkt_dev->svlan_id != 0xffff) {
+ if (pkt_dev->svlan_id != 0xffff) {
svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
*svlan_tci = build_tci(pkt_dev->svlan_id,
pkt_dev->svlan_cfi,
*vlan_encapsulated_proto = htons(ETH_P_IP);
}
- iph = (struct iphdr *)skb_put(skb, sizeof(struct iphdr));
- udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
+ skb->network_header = skb->tail;
+ skb->transport_header = skb->network_header + sizeof(struct iphdr);
+ skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
+
+ iph = ip_hdr(skb);
+ udph = udp_hdr(skb);
memcpy(eth, pkt_dev->hh, 12);
*(__be16 *) & eth[12] = protocol;
/* Eth + IPh + UDPh + mpls */
datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
- pkt_dev->nr_labels*sizeof(u32) - VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
+ pkt_dev->pkt_overhead;
if (datalen < sizeof(struct pktgen_hdr))
datalen = sizeof(struct pktgen_hdr);
iph->check = 0;
iph->check = ip_fast_csum((void *)iph, iph->ihl);
skb->protocol = protocol;
- skb->mac.raw = ((u8 *) iph) - 14 - pkt_dev->nr_labels*sizeof(u32) -
- VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
+ skb->mac_header = (skb->network_header - ETH_HLEN -
+ pkt_dev->pkt_overhead);
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
- skb->nh.iph = iph;
- skb->h.uh = udph;
if (pkt_dev->nfrags <= 0)
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
pgh->tv_usec = htonl(timestamp.tv_usec);
}
+#ifdef CONFIG_XFRM
+ if (!process_ipsec(pkt_dev, skb, protocol))
+ return NULL;
+#endif
+
return skb;
}
mod_cur_headers(pkt_dev);
skb = alloc_skb(pkt_dev->cur_pkt_size + 64 + 16 +
- pkt_dev->nr_labels*sizeof(u32) +
- VLAN_TAG_SIZE(pkt_dev) + SVLAN_TAG_SIZE(pkt_dev),
- GFP_ATOMIC);
+ pkt_dev->pkt_overhead, GFP_ATOMIC);
if (!skb) {
sprintf(pkt_dev->result, "No memory");
return NULL;
mpls_push(mpls, pkt_dev);
if (pkt_dev->vlan_id != 0xffff) {
- if(pkt_dev->svlan_id != 0xffff) {
+ if (pkt_dev->svlan_id != 0xffff) {
svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
*svlan_tci = build_tci(pkt_dev->svlan_id,
pkt_dev->svlan_cfi,
*vlan_encapsulated_proto = htons(ETH_P_IPV6);
}
- iph = (struct ipv6hdr *)skb_put(skb, sizeof(struct ipv6hdr));
- udph = (struct udphdr *)skb_put(skb, sizeof(struct udphdr));
+ skb->network_header = skb->tail;
+ skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
+ skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
+
+ iph = ipv6_hdr(skb);
+ udph = udp_hdr(skb);
memcpy(eth, pkt_dev->hh, 12);
*(__be16 *) & 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) - VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
+ pkt_dev->pkt_overhead;
if (datalen < sizeof(struct pktgen_hdr)) {
datalen = sizeof(struct pktgen_hdr);
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) -
- VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
+ skb->mac_header = (skb->network_header - ETH_HLEN -
+ pkt_dev->pkt_overhead);
skb->protocol = protocol;
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
- skb->nh.ipv6h = iph;
- skb->h.uh = udph;
if (pkt_dev->nfrags <= 0)
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
pkt_dev->started_at = getCurUs();
pkt_dev->next_tx_us = getCurUs(); /* Transmit immediately */
pkt_dev->next_tx_ns = 0;
+ set_pkt_overhead(pkt_dev);
strcpy(pkt_dev->result, "Starting");
started++;
}
}
- if (netif_queue_stopped(odev) || need_resched()) {
+ if ((netif_queue_stopped(odev) ||
+ netif_subqueue_stopped(odev, pkt_dev->skb->queue_mapping)) ||
+ need_resched()) {
idle_start = getCurUs();
if (!netif_running(odev)) {
pkt_dev->idle_acc += getCurUs() - idle_start;
- if (netif_queue_stopped(odev)) {
+ if (netif_queue_stopped(odev) ||
+ netif_subqueue_stopped(odev, pkt_dev->skb->queue_mapping)) {
pkt_dev->next_tx_us = getCurUs(); /* TODO */
pkt_dev->next_tx_ns = 0;
goto out; /* Try the next interface */
}
netif_tx_lock_bh(odev);
- if (!netif_queue_stopped(odev)) {
+ if (!netif_queue_stopped(odev) &&
+ !netif_subqueue_stopped(odev, pkt_dev->skb->queue_mapping)) {
atomic_inc(&(pkt_dev->skb->users));
retry_now:
set_current_state(TASK_INTERRUPTIBLE);
+ set_freezable();
+
while (!kthread_should_stop()) {
pkt_dev = next_to_run(t);
}
pkt_dev->entry->proc_fops = &pktgen_if_fops;
pkt_dev->entry->data = pkt_dev;
+#ifdef CONFIG_XFRM
+ pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
+ pkt_dev->ipsproto = IPPROTO_ESP;
+#endif
return add_dev_to_thread(t, pkt_dev);
out2:
dev_put(pkt_dev->odev);
out1:
+#ifdef CONFIG_XFRM
+ free_SAs(pkt_dev);
+#endif
if (pkt_dev->flows)
vfree(pkt_dev->flows);
kfree(pkt_dev);
if (pkt_dev->entry)
remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
+#ifdef CONFIG_XFRM
+ free_SAs(pkt_dev);
+#endif
if (pkt_dev->flows)
vfree(pkt_dev->flows);
kfree(pkt_dev);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff