diff options
| author |   Florin Coras <fcoras@cisco.com> | 2020-02-10 17:44:13 +0000 |
|---|---|---|
| committer |   John Lo <loj@cisco.com> | 2020-02-18 16:56:33 +0000 |
| commit | ff19e3bf4fc10d17e3bafa798e6048ad473c6bd8 (patch) | |
| tree | 8006344ab974399a04624b1c50b080a63af5b185 | |
| parent | aa3886993c13d71d93ef01dc73b79985d6ec997f (diff) | |
tcp: allow custom mss on connects
Type: feature
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ie4bd68a387f706b3e6868bece2ec4c8c1d92a9c3
| -rw-r--r-- | src/vnet/session/transport_types.h | 1 | ||||
| -rw-r--r-- | src/vnet/tcp/tcp.c | 5 |
2 files changed, 6 insertions, 0 deletions
diff --git a/src/vnet/session/transport_types.h b/src/vnet/session/transport_types.h index 214a6380d88..459fb0c5833 100644 --- a/src/vnet/session/transport_types.h +++ b/src/vnet/session/transport_types.h @@ -184,6 +184,7 @@ typedef struct transport_endpoint_ #define foreach_transport_endpoint_cfg_fields \ foreach_transport_endpoint_fields \ _(transport_endpoint_t, peer) \ + _(u16, mss) \ typedef struct transport_endpoint_pair_ { diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c index f24ddb3a879..28231763da1 100644 --- a/src/vnet/tcp/tcp.c +++ b/src/vnet/tcp/tcp.c @@ -599,6 +599,10 @@ tcp_init_rcv_mss (tcp_connection_t * tc) { u8 ip_hdr_len; + /* Already provided at connection init time */ + if (tc->mss) + return; + ip_hdr_len = tc->c_is_ip4 ? sizeof (ip4_header_t) : sizeof (ip6_header_t); tc->mss = tcp_cfg.default_mtu - sizeof (tcp_header_t) - ip_hdr_len; } @@ -763,6 +767,7 @@ tcp_session_open (transport_endpoint_cfg_t * rmt) tc->cc_algo = tcp_cc_algo_get (tcp_cfg.cc_algo); /* The other connection vars will be initialized after SYN ACK */ tcp_connection_timers_init (tc); + tc->mss = rmt->mss; TCP_EVT (TCP_EVT_OPEN, tc); tc->state = TCP_STATE_SYN_SENT; |