/*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "openflow/openflow.h"
#include "openvswitch/datapath-protocol.h"
#include "packets.h"
-
+#include "unaligned.h"
#include "vlog.h"
-#define THIS_MODULE VLM_flow
+#include "xtoxll.h"
+
+VLOG_DEFINE_THIS_MODULE(flow)
+
+static struct arp_eth_header *
+pull_arp(struct ofpbuf *packet)
+{
+ return ofpbuf_try_pull(packet, ARP_ETH_HEADER_LEN);
+}
static struct ip_header *
pull_ip(struct ofpbuf *packet)
return ofpbuf_try_pull(packet, VLAN_HEADER_LEN);
}
-/* Returns 1 if 'packet' is an IP fragment, 0 otherwise. */
+/* Returns 1 if 'packet' is an IP fragment, 0 otherwise.
+ * 'tun_id' is in network byte order, while 'in_port' is in host byte order.
+ * These byte orders are the same as they are in struct odp_flow_key. */
int
-flow_extract(struct ofpbuf *packet, uint16_t in_port, flow_t *flow)
+flow_extract(struct ofpbuf *packet, uint32_t tun_id, uint16_t in_port,
+ flow_t *flow)
{
struct ofpbuf b = *packet;
struct eth_header *eth;
COVERAGE_INC(flow_extract);
memset(flow, 0, sizeof *flow);
- flow->dl_vlan = htons(OFP_VLAN_NONE);
+ flow->tun_id = tun_id;
flow->in_port = in_port;
+ flow->dl_vlan = htons(OFP_VLAN_NONE);
packet->l2 = b.data;
packet->l3 = NULL;
if (vh) {
flow->dl_type = vh->vlan_next_type;
flow->dl_vlan = vh->vlan_tci & htons(VLAN_VID_MASK);
+ flow->dl_vlan_pcp = (ntohs(vh->vlan_tci) & 0xe000) >> 13;
}
}
memcpy(flow->dl_src, eth->eth_src, ETH_ADDR_LEN);
if (flow->dl_type == htons(ETH_TYPE_IP)) {
const struct ip_header *nh = pull_ip(&b);
if (nh) {
- flow->nw_src = nh->ip_src;
- flow->nw_dst = nh->ip_dst;
+ flow->nw_src = get_unaligned_u32(&nh->ip_src);
+ flow->nw_dst = get_unaligned_u32(&nh->ip_dst);
+ flow->nw_tos = nh->ip_tos & IP_DSCP_MASK;
flow->nw_proto = nh->ip_proto;
packet->l4 = b.data;
if (!IP_IS_FRAGMENT(nh->ip_frag_off)) {
retval = 1;
}
}
+ } else if (flow->dl_type == htons(ETH_TYPE_ARP)) {
+ const struct arp_eth_header *arp = pull_arp(&b);
+ if (arp && arp->ar_hrd == htons(1)
+ && arp->ar_pro == htons(ETH_TYPE_IP)
+ && arp->ar_hln == ETH_ADDR_LEN
+ && arp->ar_pln == 4) {
+ /* We only match on the lower 8 bits of the opcode. */
+ if (ntohs(arp->ar_op) <= 0xff) {
+ flow->nw_proto = ntohs(arp->ar_op);
+ }
+
+ if ((flow->nw_proto == ARP_OP_REQUEST)
+ || (flow->nw_proto == ARP_OP_REPLY)) {
+ flow->nw_src = arp->ar_spa;
+ flow->nw_dst = arp->ar_tpa;
+ }
+ }
}
}
return retval;
stats->n_packets = 1;
}
+/* Extract 'flow' with 'wildcards' into the OpenFlow match structure
+ * 'match'. */
void
-flow_to_match(const flow_t *flow, uint32_t wildcards, struct ofp_match *match)
+flow_to_match(const flow_t *flow, uint32_t wildcards, bool tun_id_from_cookie,
+ struct ofp_match *match)
{
+ if (!tun_id_from_cookie) {
+ wildcards &= OFPFW_ALL;
+ }
match->wildcards = htonl(wildcards);
+
match->in_port = htons(flow->in_port == ODPP_LOCAL ? OFPP_LOCAL
: flow->in_port);
match->dl_vlan = flow->dl_vlan;
+ match->dl_vlan_pcp = flow->dl_vlan_pcp;
memcpy(match->dl_src, flow->dl_src, ETH_ADDR_LEN);
memcpy(match->dl_dst, flow->dl_dst, ETH_ADDR_LEN);
match->dl_type = flow->dl_type;
match->nw_src = flow->nw_src;
match->nw_dst = flow->nw_dst;
+ match->nw_tos = flow->nw_tos;
match->nw_proto = flow->nw_proto;
match->tp_src = flow->tp_src;
match->tp_dst = flow->tp_dst;
- match->pad = 0;
+ memset(match->pad1, '\0', sizeof match->pad1);
+ memset(match->pad2, '\0', sizeof match->pad2);
}
void
-flow_from_match(flow_t *flow, uint32_t *wildcards,
- const struct ofp_match *match)
+flow_from_match(const struct ofp_match *match, bool tun_id_from_cookie,
+ uint64_t cookie, flow_t *flow, uint32_t *flow_wildcards)
{
- if (wildcards) {
- *wildcards = ntohl(match->wildcards);
- }
+ uint32_t wildcards = ntohl(match->wildcards);
+
flow->nw_src = match->nw_src;
flow->nw_dst = match->nw_dst;
+ if (tun_id_from_cookie && !(wildcards & NXFW_TUN_ID)) {
+ flow->tun_id = htonl(ntohll(cookie) >> 32);
+ } else {
+ wildcards |= NXFW_TUN_ID;
+ flow->tun_id = 0;
+ }
flow->in_port = (match->in_port == htons(OFPP_LOCAL) ? ODPP_LOCAL
: ntohs(match->in_port));
flow->dl_vlan = match->dl_vlan;
+ flow->dl_vlan_pcp = match->dl_vlan_pcp;
flow->dl_type = match->dl_type;
flow->tp_src = match->tp_src;
flow->tp_dst = match->tp_dst;
memcpy(flow->dl_src, match->dl_src, ETH_ADDR_LEN);
memcpy(flow->dl_dst, match->dl_dst, ETH_ADDR_LEN);
+ flow->nw_tos = match->nw_tos;
flow->nw_proto = match->nw_proto;
- flow->reserved = 0;
+ memset(flow->reserved, 0, sizeof flow->reserved);
+
+ if (flow_wildcards) {
+ *flow_wildcards = wildcards;
+ }
}
char *
void
flow_format(struct ds *ds, const flow_t *flow)
{
- ds_put_format(ds, "port%04x:vlan%d mac"ETH_ADDR_FMT"->"ETH_ADDR_FMT" "
- "type%04x proto%"PRId8" ip"IP_FMT"->"IP_FMT" port%d->%d",
- flow->in_port, ntohs(flow->dl_vlan),
- ETH_ADDR_ARGS(flow->dl_src), ETH_ADDR_ARGS(flow->dl_dst),
- ntohs(flow->dl_type), flow->nw_proto,
- IP_ARGS(&flow->nw_src), IP_ARGS(&flow->nw_dst),
- ntohs(flow->tp_src), ntohs(flow->tp_dst));
+ ds_put_format(ds, "tunnel%08"PRIx32":in_port%04"PRIx16
+ ":vlan%"PRIu16":pcp%"PRIu8
+ " mac"ETH_ADDR_FMT"->"ETH_ADDR_FMT
+ " type%04"PRIx16
+ " proto%"PRIu8
+ " tos%"PRIu8
+ " ip"IP_FMT"->"IP_FMT
+ " port%"PRIu16"->%"PRIu16,
+ ntohl(flow->tun_id),
+ flow->in_port,
+ ntohs(flow->dl_vlan),
+ flow->dl_vlan_pcp,
+ ETH_ADDR_ARGS(flow->dl_src),
+ ETH_ADDR_ARGS(flow->dl_dst),
+ ntohs(flow->dl_type),
+ flow->nw_proto,
+ flow->nw_tos,
+ IP_ARGS(&flow->nw_src),
+ IP_ARGS(&flow->nw_dst),
+ ntohs(flow->tp_src),
+ ntohs(flow->tp_dst));
}
void
git://git.onelab.eu / sliver-openvswitch.git / blobdiff