diff options
| author |   Florin Coras <fcoras@cisco.com> | 2021-04-12 19:55:37 -0700 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2021-04-14 16:01:50 +0000 |
| commit | 04ae8273f64a4f5a771da9b056bcccd1ebf9c7d9 (patch) | |
| tree | 09597fb999f63e30a22424d9a3a0e616a24c28b9 /src/vnet/tcp/tcp.c | |
| parent | 7bc714da36bb9badec2ad5bf848c6b90caabad0a (diff) | |
session tcp vcl: api to update connection attributes
Type: feature
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ifdd6024daf044751895bb8d2deabad41d3a80c92
Diffstat (limited to 'src/vnet/tcp/tcp.c')
| -rw-r--r-- | src/vnet/tcp/tcp.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c index 2d384a65cfc..7f1e63e7b84 100644 --- a/src/vnet/tcp/tcp.c +++ b/src/vnet/tcp/tcp.c @@ -873,6 +873,101 @@ tcp_half_open_session_get_transport (u32 conn_index) return &tc->connection; } +static int +tcp_set_attribute (tcp_connection_t *tc, transport_endpt_attr_t *attr) +{ + int rv = 0; + + switch (attr->type) + { + case TRANSPORT_ENDPT_ATTR_NEXT_OUTPUT_NODE: + tc->next_node_index = attr->next_output_node & 0xffffffff; + tc->next_node_opaque = attr->next_output_node >> 32; + break; + case TRANSPORT_ENDPT_ATTR_MSS: + tc->mss = attr->mss; + tc->snd_mss = clib_min (tc->snd_mss, tc->mss); + break; + case TRANSPORT_ENDPT_ATTR_FLAGS: + if (attr->flags & TRANSPORT_ENDPT_ATTR_F_CSUM_OFFLOAD) + tc->cfg_flags |= TCP_CFG_F_NO_CSUM_OFFLOAD; + else + tc->cfg_flags &= ~TCP_CFG_F_NO_CSUM_OFFLOAD; + if (attr->flags & TRANSPORT_ENDPT_ATTR_F_GSO) + { + if (!(tc->cfg_flags & TCP_CFG_F_TSO)) + tcp_check_gso (tc); + tc->cfg_flags &= ~TCP_CFG_F_NO_TSO; + } + else + { + tc->cfg_flags |= TCP_CFG_F_NO_TSO; + tc->cfg_flags &= ~TCP_CFG_F_TSO; + } + break; + case TRANSPORT_ENDPT_ATTR_CC_ALGO: + if (tc->cc_algo == tcp_cc_algo_get (attr->cc_algo)) + break; + tcp_cc_cleanup (tc); + tc->cc_algo = tcp_cc_algo_get (attr->cc_algo); + tcp_cc_init (tc); + break; + default: + rv = -1; + break; + } + + return rv; +} + +static int +tcp_get_attribute (tcp_connection_t *tc, transport_endpt_attr_t *attr) +{ + int rv = 0; + u64 non; + + switch (attr->type) + { + case TRANSPORT_ENDPT_ATTR_NEXT_OUTPUT_NODE: + non = (u64) tc->next_node_opaque << 32 | tc->next_node_index; + attr->next_output_node = non; + break; + case TRANSPORT_ENDPT_ATTR_MSS: + attr->mss = tc->snd_mss; + break; + case TRANSPORT_ENDPT_ATTR_FLAGS: + attr->flags = 0; + if (!(tc->cfg_flags & TCP_CFG_F_NO_CSUM_OFFLOAD)) + attr->flags |= TRANSPORT_ENDPT_ATTR_F_CSUM_OFFLOAD; + if (tc->cfg_flags & TCP_CFG_F_TSO) + attr->flags |= TRANSPORT_ENDPT_ATTR_F_GSO; + break; + case TRANSPORT_ENDPT_ATTR_CC_ALGO: + attr->cc_algo = tc->cc_algo - tcp_main.cc_algos; + break; + default: + rv = -1; + break; + } + + return rv; +} + +static int +tcp_session_attribute (u32 conn_index, u32 thread_index, u8 is_get, + transport_endpt_attr_t *attr) +{ + tcp_connection_t *tc = tcp_connection_get (conn_index, thread_index); + + if (PREDICT_FALSE (!tc)) + return -1; + + if (is_get) + return tcp_get_attribute (tc, attr); + else + return tcp_set_attribute (tc, attr); +} + static u16 tcp_session_cal_goal_size (tcp_connection_t * tc) { @@ -1172,6 +1267,7 @@ const static transport_proto_vft_t tcp_proto = { .get_connection = tcp_session_get_transport, .get_listener = tcp_session_get_listener, .get_half_open = tcp_half_open_session_get_transport, + .attribute = tcp_session_attribute, .connect = tcp_session_open, .close = tcp_session_close, .cleanup = tcp_session_cleanup, |