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Diffstat (limited to 'src/vnet/ip/ip6.h')
-rw-r--r--src/vnet/ip/ip6.h27
1 files changed, 23 insertions, 4 deletions
diff --git a/src/vnet/ip/ip6.h b/src/vnet/ip/ip6.h
index cf40fbb37aa..535f24c05d1 100644
--- a/src/vnet/ip/ip6.h
+++ b/src/vnet/ip/ip6.h
@@ -445,11 +445,30 @@ always_inline u32
ip6_compute_flow_hash (const ip6_header_t * ip,
flow_hash_config_t flow_hash_config)
{
- tcp_header_t *tcp = (void *) (ip + 1);
+ tcp_header_t *tcp;
u64 a, b, c;
u64 t1, t2;
- uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP
- || ip->protocol == IP_PROTOCOL_UDP);
+ uword is_tcp_udp = 0;
+ u8 protocol = ip->protocol;
+
+ if (PREDICT_TRUE
+ ((ip->protocol == IP_PROTOCOL_TCP)
+ || (ip->protocol == IP_PROTOCOL_UDP)))
+ {
+ is_tcp_udp = 1;
+ tcp = (void *) (ip + 1);
+ }
+ else if (ip->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)
+ {
+ ip6_hop_by_hop_header_t *hbh = (ip6_hop_by_hop_header_t *) (ip + 1);
+ if ((hbh->protocol == IP_PROTOCOL_TCP) ||
+ (hbh->protocol == IP_PROTOCOL_UDP))
+ {
+ is_tcp_udp = 1;
+ tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3));
+ }
+ protocol = hbh->protocol;
+ }
t1 = (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1]);
t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? t1 : 0;
@@ -459,7 +478,7 @@ ip6_compute_flow_hash (const ip6_header_t * ip,
a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1;
b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2;
- b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0;
+ b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? protocol : 0;
t1 = is_tcp_udp ? tcp->src : 0;
t2 = is_tcp_udp ? tcp->dst : 0;