X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fflow.c;h=7d368bb6d4917aa2aaab1acc86cf777103b0c2f6;hb=7360012bdf64effd898242a58634267e203a2795;hp=1801d4dede334f4f9c6bf084ae718ad6bc1855a8;hpb=a14bc59fb8f27db193d74662dc9c5cb8237177ef;p=openvswitch

diff --git a/lib/flow.c b/lib/flow.c
index 1801d4de..7d368bb6 100644
--- a/lib/flow.c
+++ b/lib/flow.c
@@ -1,5 +1,5 @@
 /*
- * 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.
@@ -31,6 +31,12 @@
 #include "vlog.h"
 #define THIS_MODULE VLM_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)
 {
@@ -133,6 +139,7 @@ flow_extract(struct ofpbuf *packet, uint16_t in_port, flow_t *flow)
             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);
@@ -144,6 +151,7 @@ flow_extract(struct ofpbuf *packet, uint16_t in_port, flow_t *flow)
             if (nh) {
                 flow->nw_src = nh->ip_src;
                 flow->nw_dst = 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)) {
@@ -185,6 +193,23 @@ flow_extract(struct ofpbuf *packet, uint16_t in_port, flow_t *flow)
                     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;
@@ -212,6 +237,8 @@ flow_extract_stats(const flow_t *flow, struct ofpbuf *packet,
     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)
 {
@@ -219,15 +246,18 @@ flow_to_match(const flow_t *flow, uint32_t wildcards, struct ofp_match *match)
     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
@@ -242,13 +272,15 @@ flow_from_match(flow_t *flow, uint32_t *wildcards,
     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);
 }
 
 char *
@@ -262,11 +294,12 @@ flow_to_string(const flow_t *flow)
 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),
+    ds_put_format(ds, "in_port%04x:vlan%d:pcp%d mac"ETH_ADDR_FMT
+                  "->"ETH_ADDR_FMT" type%04x proto%"PRId8" tos%"PRIu8
+                  " ip"IP_FMT"->"IP_FMT" port%d->%d",
+                  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,
+                  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));
 }