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-rw-r--r--src/vnet/sctp/sctp.h6
-rw-r--r--src/vnet/sctp/sctp_input.c49
-rw-r--r--src/vnet/sctp/sctp_output.c48
-rw-r--r--src/vnet/sctp/sctp_packet.h3
4 files changed, 62 insertions, 44 deletions
diff --git a/src/vnet/sctp/sctp.h b/src/vnet/sctp/sctp.h
index bc974d948de..25fae37b6f7 100644
--- a/src/vnet/sctp/sctp.h
+++ b/src/vnet/sctp/sctp.h
@@ -251,7 +251,8 @@ void sctp_send_init (sctp_connection_t * sctp_conn);
void sctp_send_shutdown (sctp_connection_t * sctp_conn);
void sctp_send_shutdown_ack (sctp_connection_t * sctp_conn,
vlib_buffer_t * b);
-void sctp_send_shutdown_complete (sctp_connection_t * sctp_conn);
+void sctp_send_shutdown_complete (sctp_connection_t * sctp_conn,
+ vlib_buffer_t * b0);
void sctp_send_heartbeat (sctp_connection_t * sctp_conn);
void sctp_flush_frame_to_output (vlib_main_t * vm, u8 thread_index,
u8 is_ip4);
@@ -718,6 +719,9 @@ sctp_pick_conn_idx_on_chunk (sctp_chunk_type chunk_type)
case CWR:
case SHUTDOWN_COMPLETE:
idx = MAIN_SCTP_SUB_CONN_IDX;
+ break;
+ default:
+ idx = 0;
}
return idx;
}
diff --git a/src/vnet/sctp/sctp_input.c b/src/vnet/sctp/sctp_input.c
index 3f7ab4b8f8a..8f4b043f297 100644
--- a/src/vnet/sctp/sctp_input.c
+++ b/src/vnet/sctp/sctp_input.c
@@ -27,7 +27,8 @@ static char *sctp_error_strings[] = {
/* All SCTP nodes have the same outgoing arcs */
#define foreach_sctp_state_next \
- _ (DROP, "error-drop") \
+ _ (DROP4, "ip4-drop") \
+ _ (DROP6, "ip6-drop") \
_ (SCTP4_OUTPUT, "sctp4-output") \
_ (SCTP6_OUTPUT, "sctp6-output")
@@ -233,6 +234,8 @@ typedef struct
#define sctp_next_output(is_ip4) (is_ip4 ? SCTP_NEXT_SCTP4_OUTPUT \
: SCTP_NEXT_SCTP6_OUTPUT)
+#define sctp_next_drop(is_ip4) (is_ip4 ? SCTP_NEXT_DROP4 \
+ : SCTP_NEXT_DROP6)
void
sctp_set_rx_trace_data (sctp_rx_trace_t * rx_trace,
@@ -744,7 +747,7 @@ sctp_handle_data (sctp_payload_data_chunk_t * sctp_data_chunk,
}
sctp_conn->last_rcvd_tsn = tsn;
- *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
SCTP_ADV_DBG ("POINTER_WITH_DATA = %p", b->data);
@@ -816,7 +819,7 @@ sctp_handle_cookie_ack (sctp_header_t * sctp_hdr,
sctp_timer_reset (sctp_conn, idx, SCTP_TIMER_T1_COOKIE);
/* Change state */
sctp_conn->state = SCTP_STATE_ESTABLISHED;
- *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
sctp_conn->sub_conn[idx].RTO);
@@ -977,7 +980,7 @@ sctp46_rcv_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
*/
default:
error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
@@ -985,7 +988,7 @@ sctp46_rcv_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
{
clib_warning ("error while parsing chunk");
sctp_connection_cleanup (sctp_conn);
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
@@ -1153,7 +1156,7 @@ sctp_handle_shutdown_ack (sctp_header_t * sctp_hdr,
sctp_timer_reset (sctp_conn, MAIN_SCTP_SUB_CONN_IDX,
SCTP_TIMER_T2_SHUTDOWN);
- sctp_send_shutdown_complete (sctp_conn);
+ sctp_send_shutdown_complete (sctp_conn, b0);
*next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
@@ -1190,7 +1193,7 @@ sctp_handle_shutdown_complete (sctp_header_t * sctp_hdr,
stream_session_disconnect_notify (&sctp_conn->sub_conn
[MAIN_SCTP_SUB_CONN_IDX].connection);
- *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_NONE;
}
@@ -1307,7 +1310,7 @@ sctp46_shutdown_phase_inline (vlib_main_t * vm,
*/
default:
error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
@@ -1315,7 +1318,7 @@ sctp46_shutdown_phase_inline (vlib_main_t * vm,
{
clib_warning ("error while parsing chunk");
sctp_connection_cleanup (sctp_conn);
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
@@ -1431,7 +1434,7 @@ sctp_handle_sack (sctp_selective_ack_chunk_t * sack_chunk,
sctp_conn->sub_conn[idx].RTO_pending = 0;
- *next0 = sctp_next_output (sctp_conn->sub_conn[idx].connection.is_ip4);
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_NONE;
}
@@ -1464,7 +1467,7 @@ sctp_handle_heartbeat_ack (sctp_hb_ack_chunk_t * sctp_hb_ack_chunk,
sctp_timer_update (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
sctp_conn->sub_conn[idx].RTO);
- *next0 = sctp_next_output (sctp_conn->sub_conn[idx].connection.is_ip4);
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_NONE;
}
@@ -1591,7 +1594,7 @@ sctp46_listen_process_inline (vlib_main_t * vm,
connection.c_index, sctp_chunk_to_string (chunk_type));
error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
@@ -1699,7 +1702,8 @@ sctp46_established_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
ip4_header_t *ip4_hdr = 0;
ip6_header_t *ip6_hdr = 0;
sctp_connection_t *sctp_conn;
- u16 error0 = SCTP_ERROR_NONE, next0 = SCTP_ESTABLISHED_PHASE_N_NEXT;
+ u16 error0 = SCTP_ERROR_ENQUEUED, next0 =
+ SCTP_ESTABLISHED_PHASE_N_NEXT;
u8 idx;
bi0 = from[0];
@@ -1807,7 +1811,7 @@ sctp46_established_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
*/
default:
error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto done;
}
@@ -2068,7 +2072,16 @@ sctp46_input_dispatcher (vlib_main_t * vm, vlib_node_runtime_t * node,
sctp_conn = sctp_get_connection_from_transport (trans_conn);
vnet_sctp_common_hdr_params_net_to_host (sctp_chunk_hdr);
- u8 type = vnet_sctp_get_chunk_type (sctp_chunk_hdr);
+ u8 chunk_type = vnet_sctp_get_chunk_type (sctp_chunk_hdr);
+ if (chunk_type >= UNKNOWN)
+ {
+ clib_warning
+ ("Received an unrecognized chunk... something is really bad.");
+ error0 = SCTP_ERROR_UNKOWN_CHUNK;
+ next0 = SCTP_INPUT_NEXT_DROP;
+ goto done;
+ }
+
#if SCTP_DEBUG_STATE_MACHINE
u8 idx = sctp_pick_conn_idx_on_state (sctp_conn->state);
#endif
@@ -2083,8 +2096,8 @@ sctp46_input_dispatcher (vlib_main_t * vm, vlib_node_runtime_t * node,
vnet_buffer (b0)->sctp.data_offset = n_advance_bytes0;
vnet_buffer (b0)->sctp.data_len = n_data_bytes0;
- next0 = tm->dispatch_table[sctp_conn->state][type].next;
- error0 = tm->dispatch_table[sctp_conn->state][type].error;
+ next0 = tm->dispatch_table[sctp_conn->state][chunk_type].next;
+ error0 = tm->dispatch_table[sctp_conn->state][chunk_type].error;
SCTP_DBG_STATE_MACHINE ("CONNECTION_INDEX = %u: "
"CURRENT_CONNECTION_STATE = %s,"
@@ -2096,7 +2109,7 @@ sctp46_input_dispatcher (vlib_main_t * vm, vlib_node_runtime_t * node,
sctp_chunk_to_string (type),
phase_to_string (next0));
- if (type == DATA)
+ if (chunk_type == DATA)
SCTP_ADV_DBG ("n_advance_bytes0 = %u, n_data_bytes0 = %u",
n_advance_bytes0, n_data_bytes0);
diff --git a/src/vnet/sctp/sctp_output.c b/src/vnet/sctp/sctp_output.c
index bb8332f5732..6012e50b908 100644
--- a/src/vnet/sctp/sctp_output.c
+++ b/src/vnet/sctp/sctp_output.c
@@ -352,13 +352,6 @@ sctp_enqueue_to_output_i (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
}
always_inline void
-sctp_enqueue_to_output (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
- u8 is_ip4)
-{
- sctp_enqueue_to_output_i (vm, b, bi, is_ip4, 0);
-}
-
-always_inline void
sctp_enqueue_to_output_now (vlib_main_t * vm, vlib_buffer_t * b, u32 bi,
u8 is_ip4)
{
@@ -1007,23 +1000,19 @@ sctp_prepare_shutdown_complete_chunk (sctp_connection_t * sctp_conn,
}
void
-sctp_send_shutdown_complete (sctp_connection_t * sctp_conn)
+sctp_send_shutdown_complete (sctp_connection_t * sctp_conn,
+ vlib_buffer_t * b0)
{
- vlib_buffer_t *b;
- u32 bi;
- sctp_main_t *tm = vnet_get_sctp_main ();
vlib_main_t *vm = vlib_get_main ();
- if (PREDICT_FALSE (sctp_get_free_buffer_index (tm, &bi)))
+ if (sctp_check_outstanding_data_chunks (sctp_conn) > 0)
return;
- b = vlib_get_buffer (vm, bi);
- sctp_init_buffer (vm, b);
- sctp_prepare_shutdown_complete_chunk (sctp_conn, b);
+ sctp_reuse_buffer (vm, b0);
- u8 idx = sctp_pick_conn_idx_on_chunk (SHUTDOWN_COMPLETE);
- sctp_enqueue_to_output (vm, b, bi,
- sctp_conn->sub_conn[idx].connection.is_ip4);
+ sctp_prepare_shutdown_complete_chunk (sctp_conn, b0);
+
+ sctp_conn->state = SCTP_STATE_CLOSED;
}
@@ -1143,6 +1132,7 @@ sctp_push_header (transport_connection_t * trans_conn, vlib_buffer_t * b)
}
+#if SCTP_DEBUG_STATE_MACHINE
always_inline u8
sctp_validate_output_state_machine (sctp_connection_t * sctp_conn,
u8 chunk_type)
@@ -1175,6 +1165,7 @@ sctp_validate_output_state_machine (sctp_connection_t * sctp_conn,
}
return result;
}
+#endif
always_inline u8
sctp_is_retransmitting (sctp_connection_t * sctp_conn, u8 idx)
@@ -1293,6 +1284,18 @@ sctp46_output_inline (vlib_main_t * vm,
#endif
}
+ sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
+ u8 chunk_type = vnet_sctp_get_chunk_type (&full_hdr->common_hdr);
+ if (chunk_type >= UNKNOWN)
+ {
+ clib_warning
+ ("Trying to send an unrecognized chunk... something is really bad.");
+ error0 = SCTP_ERROR_UNKOWN_CHUNK;
+ next0 = SCTP_OUTPUT_NEXT_DROP;
+ goto done;
+ }
+
+#if SCTP_DEBUG_STATE_MACHINE
u8 is_valid =
(sctp_conn->sub_conn[idx].connection.lcl_port ==
sctp_hdr->src_port
@@ -1303,9 +1306,6 @@ sctp46_output_inline (vlib_main_t * vm,
|| sctp_conn->sub_conn[idx].connection.rmt_port ==
sctp_hdr->src_port);
- sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
- u8 chunk_type = vnet_sctp_get_chunk_type (&full_hdr->common_hdr);
-
if (!is_valid)
{
SCTP_DBG_STATE_MACHINE ("BUFFER IS INCORRECT: conn_index = %u, "
@@ -1313,8 +1313,8 @@ sctp46_output_inline (vlib_main_t * vm,
"chunk_type = %u [%s], "
"connection.lcl_port = %u, sctp_hdr->src_port = %u, "
"connection.rmt_port = %u, sctp_hdr->dst_port = %u",
- sctp_conn->sub_conn
- [idx].connection.c_index, packet_length,
+ sctp_conn->sub_conn[idx].
+ connection.c_index, packet_length,
chunk_type,
sctp_chunk_to_string (chunk_type),
sctp_conn->sub_conn[idx].
@@ -1327,7 +1327,7 @@ sctp46_output_inline (vlib_main_t * vm,
next0 = SCTP_OUTPUT_NEXT_DROP;
goto done;
}
-
+#endif
SCTP_DBG_STATE_MACHINE
("CONN_INDEX = %u, CURR_CONN_STATE = %u (%s), "
"CHUNK_TYPE = %s, " "SRC_PORT = %u, DST_PORT = %u",
diff --git a/src/vnet/sctp/sctp_packet.h b/src/vnet/sctp/sctp_packet.h
index b831d249f76..3ca05b5a11e 100644
--- a/src/vnet/sctp/sctp_packet.h
+++ b/src/vnet/sctp/sctp_packet.h
@@ -163,7 +163,8 @@ typedef enum
COOKIE_ACK,
ECNE,
CWR,
- SHUTDOWN_COMPLETE
+ SHUTDOWN_COMPLETE,
+ UNKNOWN
} sctp_chunk_type;
/*