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authorFlorin Coras <fcoras@cisco.com>2018-12-12 10:56:01 -0800
committerDave Barach <openvpp@barachs.net>2018-12-13 13:40:32 +0000
commit42ceddb7cd836a89a12b0b8e623b06bc4c0cc0cb (patch)
tree9731e8708e3ad9d96d418068d59743dbd8e69658 /src/vnet/tcp/tcp_output.c
parent413f4a5b2123c1625d615315db293a080078482b (diff)
session/tcp: support tx flush mark
For tcp this means that the last enqueued data goes out with a psh bit set. Change-Id: I29d357ecae6f02e748b59a7b799150ec73d14ba2 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp_output.c')
-rw-r--r--src/vnet/tcp/tcp_output.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index 74fc15fe6cc..7cee34995e3 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -1169,7 +1169,12 @@ tcp_push_hdr_i (tcp_connection_t * tc, vlib_buffer_t * b,
advertise_wnd = tcp_window_to_advertise (tc, next_state);
flags = tcp_make_state_flags (tc, next_state);
-
+ if (PREDICT_FALSE (tc->flags & TCP_CONN_PSH_PENDING))
+ {
+ if (seq_geq (tc->psh_seq, tc->snd_nxt)
+ && seq_lt (tc->psh_seq, tc->snd_nxt + data_len))
+ flags |= TCP_FLAG_PSH;
+ }
th = vlib_buffer_push_tcp (b, tc->c_lcl_port, tc->c_rmt_port, tc->snd_nxt,
tc->rcv_nxt, tcp_hdr_opts_len, flags,
advertise_wnd);