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-rw-r--r--src/vnet/tcp/tcp.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index d060654a037..cbb95777820 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -1175,6 +1175,17 @@ tcp_half_open_session_get_transport (u32 conn_index)
return &tc->connection;
}
+static u16
+tcp_session_cal_goal_size (tcp_connection_t * tc)
+{
+ u16 goal_size = tc->snd_mss;
+
+ goal_size = TCP_MAX_GSO_SZ - tc->snd_mss % TCP_MAX_GSO_SZ;
+ goal_size = clib_min (goal_size, tc->snd_wnd / 2);
+
+ return goal_size;
+}
+
/**
* Compute maximum segment size for session layer.
*
@@ -1192,6 +1203,11 @@ tcp_session_send_mss (transport_connection_t * trans_conn)
* the current state of the connection. */
tcp_update_burst_snd_vars (tc);
+ if (PREDICT_FALSE (tc->is_tso))
+ {
+ return tcp_session_cal_goal_size (tc);
+ }
+
return tc->snd_mss;
}