diff options
| author |   Tarun Gupta <tarungup@cisco.com> | 2019-11-04 16:35:59 -0800 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2019-11-06 00:42:41 +0000 |
| commit | 2089c69efbc4ae5c64cab8a5418187b21478987a (patch) | |
| tree | eefd1469bf359d3e176e8ae352ec78c395dbc4aa /src/vnet/tcp | |
| parent | ead1e536d66d83b546528c32e2112085a97c8e13 (diff) | |
tcp: IPv6 flow label support
Type:feature
For cases when proxy is in use IPv6 flow label received in origin pkt needs to be added
to ipv6 header of outgoing pkts from proxy to original destination and vice versa.
Signed-off-by: Tarun Gupta <tarungup@cisco.com>
Change-Id: I143f7e67237c0f865333078628a016b50ad5e630
Signed-off-by: Tarun Gupta <tarungup@cisco.com>
Diffstat (limited to 'src/vnet/tcp')
| -rw-r--r-- | src/vnet/tcp/tcp.h | 1 | ||||
| -rw-r--r-- | src/vnet/tcp/tcp_output.c | 16 |
2 files changed, 11 insertions, 6 deletions
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h index 7309e0ad109..4b0a0ddea53 100644 --- a/src/vnet/tcp/tcp.h +++ b/src/vnet/tcp/tcp.h @@ -435,6 +435,7 @@ typedef struct _tcp_connection u32 last_fib_check; /**< Last time we checked fib route for peer */ u16 mss; /**< Our max seg size that includes options */ u32 timestamp_delta; /**< Offset for timestamp */ + u32 ipv6_flow_label; /**< flow label for ipv6 header */ } tcp_connection_t; /* *INDENT-OFF* */ diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c index 71e9d7bbdb0..c7e9792afaa 100644 --- a/src/vnet/tcp/tcp_output.c +++ b/src/vnet/tcp/tcp_output.c @@ -842,8 +842,10 @@ tcp_send_reset_w_pkt (tcp_connection_t * tc, vlib_buffer_t * pkt, int bogus = ~0; ASSERT ((pkt_ih6->ip_version_traffic_class_and_flow_label & 0xF0) == 0x60); - ih6 = vlib_buffer_push_ip6 (vm, b, &pkt_ih6->dst_address, - &pkt_ih6->src_address, IP_PROTOCOL_TCP); + ih6 = vlib_buffer_push_ip6_custom (vm, b, &pkt_ih6->dst_address, + &pkt_ih6->src_address, + IP_PROTOCOL_TCP, + tc->ipv6_flow_label); th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ih6, &bogus); ASSERT (!bogus); } @@ -909,8 +911,9 @@ tcp_push_ip_hdr (tcp_worker_ctx_t * wrk, tcp_connection_t * tc, ip6_header_t *ih; int bogus = ~0; - ih = vlib_buffer_push_ip6 (vm, b, &tc->c_lcl_ip6, - &tc->c_rmt_ip6, IP_PROTOCOL_TCP); + ih = vlib_buffer_push_ip6_custom (vm, b, &tc->c_lcl_ip6, + &tc->c_rmt_ip6, IP_PROTOCOL_TCP, + tc->ipv6_flow_label); th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ih, &bogus); ASSERT (!bogus); } @@ -2278,8 +2281,9 @@ tcp_output_push_ip (vlib_main_t * vm, vlib_buffer_t * b0, ih0 = vlib_buffer_push_ip4 (vm, b0, &tc0->c_lcl_ip4, &tc0->c_rmt_ip4, IP_PROTOCOL_TCP, tcp_csum_offload (tc0)); else - ih0 = vlib_buffer_push_ip6 (vm, b0, &tc0->c_lcl_ip6, &tc0->c_rmt_ip6, - IP_PROTOCOL_TCP); + ih0 = + vlib_buffer_push_ip6_custom (vm, b0, &tc0->c_lcl_ip6, &tc0->c_rmt_ip6, + IP_PROTOCOL_TCP, tc0->ipv6_flow_label); } |