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-rw-r--r--src/vnet/tcp/tcp.h5
-rwxr-xr-xsrc/vnet/tcp/tcp_input.c41
2 files changed, 44 insertions, 2 deletions
diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 2de25277b60..52cc308871b 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -765,7 +765,10 @@ u8 *format_tcp_connection (u8 * s, va_list * args);
always_inline tcp_connection_t *
tcp_listener_get (u32 tli)
{
- return pool_elt_at_index (tcp_main.listener_pool, tli);
+ tcp_connection_t *tc = 0;
+ if (!pool_is_free_index (tcp_main.listener_pool, tli))
+ tc = pool_elt_at_index (tcp_main.listener_pool, tli);
+ return tc;
}
always_inline tcp_connection_t *
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 52d73169654..675bc3f4283 100755
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -2360,6 +2360,36 @@ tcp_lookup_connection (u32 fib_index, vlib_buffer_t * b, u8 thread_index,
return tc;
}
+static tcp_connection_t *
+tcp_lookup_listener (vlib_buffer_t * b, u32 fib_index, int is_ip4)
+{
+ session_t *s;
+
+ if (is_ip4)
+ {
+ ip4_header_t *ip4 = vlib_buffer_get_current (b);
+ tcp_header_t *tcp = tcp_buffer_hdr (b);
+ s = session_lookup_listener4 (fib_index,
+ &ip4->dst_address,
+ tcp->dst_port, TRANSPORT_PROTO_TCP, 1);
+ }
+ else
+ {
+ ip6_header_t *ip6 = vlib_buffer_get_current (b);
+ tcp_header_t *tcp = tcp_buffer_hdr (b);
+ s = session_lookup_listener6 (fib_index,
+ &ip6->dst_address,
+ tcp->dst_port, TRANSPORT_PROTO_TCP, 1);
+
+ }
+ if (PREDICT_TRUE (s != 0))
+ return tcp_get_connection_from_transport (transport_get_listener
+ (TRANSPORT_PROTO_TCP,
+ s->connection_index));
+ else
+ return 0;
+}
+
always_inline void
tcp_check_tx_offload (tcp_connection_t * tc, int is_ipv4)
{
@@ -3138,6 +3168,7 @@ tcp46_listen_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
{
u32 n_left_from, *from, n_syns = 0, *first_buffer;
u32 my_thread_index = vm->thread_index;
+ tcp_connection_t *tc0;
from = first_buffer = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
@@ -3160,6 +3191,14 @@ tcp46_listen_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
b0 = vlib_get_buffer (vm, bi0);
lc0 = tcp_listener_get (vnet_buffer (b0)->tcp.connection_index);
+ if (PREDICT_FALSE (lc0 == 0))
+ {
+ tc0 = tcp_connection_get (vnet_buffer (b0)->tcp.connection_index,
+ my_thread_index);
+ /* clean up the old session */
+ lc0 = tcp_lookup_listener (b0, tc0->c_fib_index, is_ip4);
+ tcp_connection_del (tc0);
+ }
if (is_ip4)
{
@@ -3957,7 +3996,7 @@ do { \
TCP_ERROR_NONE);
_(LAST_ACK, TCP_FLAG_SYN | TCP_FLAG_RST | TCP_FLAG_ACK,
TCP_INPUT_NEXT_RCV_PROCESS, TCP_ERROR_NONE);
- _(TIME_WAIT, TCP_FLAG_SYN, TCP_INPUT_NEXT_RCV_PROCESS, TCP_ERROR_NONE);
+ _(TIME_WAIT, TCP_FLAG_SYN, TCP_INPUT_NEXT_LISTEN, TCP_ERROR_NONE);
_(TIME_WAIT, TCP_FLAG_FIN, TCP_INPUT_NEXT_RCV_PROCESS, TCP_ERROR_NONE);
_(TIME_WAIT, TCP_FLAG_FIN | TCP_FLAG_ACK, TCP_INPUT_NEXT_RCV_PROCESS,
TCP_ERROR_NONE);