diff options
| author |   Takeru Hayasaka <hayatake396@gmail.com> | 2023-01-17 04:45:58 +0900 |
|---|---|---|
| committer |   Neale Ranns <neale@graphiant.com> | 2023-03-31 06:04:42 +0000 |
| commit | b23c6f4f29b53afa6be2735b30b08fcb115f20cc (patch) | |
| tree | 59cca6452dca4b17fbce112ca8f4e5b3004565b7 /src/vnet/ip/ip4_inlines.h | |
| parent | 55686e1c59f8bcf399f5ff58b3ca1030a415009c (diff) | |
ip: support flow-hash gtpv1teid
support with GTPv1 TEID added to the flow hash.
This can able to ECMP to PGW and parallelization.
Type: feature
Change-Id: I6f758579027caf6123831ef2db7afe17e424a6eb
Signed-off-by: Takeru Hayasaka <hayatake396@gmail.com>
Diffstat (limited to 'src/vnet/ip/ip4_inlines.h')
| -rw-r--r-- | src/vnet/ip/ip4_inlines.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/vnet/ip/ip4_inlines.h b/src/vnet/ip/ip4_inlines.h index ca7327fbcdc..b4fcebc9896 100644 --- a/src/vnet/ip/ip4_inlines.h +++ b/src/vnet/ip/ip4_inlines.h @@ -43,6 +43,7 @@ #include <vnet/ip/ip_flow_hash.h> #include <vnet/ip/ip4_packet.h> #include <vnet/tcp/tcp_packet.h> +#include <vnet/udp/udp_packet.h> #define IP_DF 0x4000 /* don't fragment */ @@ -53,9 +54,11 @@ ip4_compute_flow_hash (const ip4_header_t * ip, flow_hash_config_t flow_hash_config) { tcp_header_t *tcp = (void *) (ip + 1); + udp_header_t *udp = (void *) (ip + 1); + gtpv1u_header_t *gtpu = (void *) (udp + 1); u32 a, b, c, t1, t2; - uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP - || ip->protocol == IP_PROTOCOL_UDP); + uword is_udp = ip->protocol == IP_PROTOCOL_UDP; + uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP || is_udp); t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? ip->src_address.data_u32 : 0; @@ -90,6 +93,13 @@ ip4_compute_flow_hash (const ip4_header_t * ip, b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0; c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? (t1 << 16) | t2 : (t2 << 16) | t1; + if (PREDICT_TRUE (is_udp) && + PREDICT_FALSE ((flow_hash_config & IP_FLOW_HASH_GTPV1_TEID) && + udp->dst_port == GTPV1_PORT_BE)) + { + t1 = gtpu->teid; + c ^= t1; + } a ^= ip_flow_hash_router_id; hash_v3_mix32 (a, b, c); |