/* 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")
#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,
{
if (sctp_conn)
{
- clib_memcpy (&rx_trace->sctp_connection, sctp_conn,
- sizeof (rx_trace->sctp_connection));
+ clib_memcpy_fast (&rx_trace->sctp_connection, sctp_conn,
+ sizeof (rx_trace->sctp_connection));
}
else
{
sctp_hdr = sctp_buffer_hdr (b0);
}
- clib_memcpy (&rx_trace->sctp_header, sctp_hdr,
- sizeof (rx_trace->sctp_header));
+ clib_memcpy_fast (&rx_trace->sctp_header, sctp_hdr,
+ sizeof (rx_trace->sctp_header));
}
always_inline u16
return 0;
}
+always_inline u16
+sctp_handle_operation_err (sctp_header_t * sctp_hdr,
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b, u16 * next0)
+{
+ sctp_operation_error_t *op_err = (sctp_operation_error_t *) sctp_hdr;
+
+ /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
+ if (sctp_conn->local_tag != sctp_hdr->verification_tag)
+ {
+ return SCTP_ERROR_INVALID_TAG;
+ }
+
+ if (clib_net_to_host_u16 (op_err->err_causes[0].param_hdr.type) ==
+ STALE_COOKIE_ERROR)
+ {
+ if (sctp_conn->state != SCTP_STATE_COOKIE_ECHOED)
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
+ else
+ {
+ sctp_connection_cleanup (sctp_conn);
+
+ session_transport_closing_notify (&sctp_conn->
+ sub_conn[idx].connection);
+ }
+ }
+
+ return SCTP_ERROR_NONE;
+}
+
always_inline u16
sctp_handle_init (sctp_header_t * sctp_hdr,
sctp_chunks_common_hdr_t * sctp_chunk_hdr,
u16 sctp_implied_length)
{
sctp_init_chunk_t *init_chunk = (sctp_init_chunk_t *) (sctp_hdr);
- ip4_address_t *ip4_addr = 0;
- ip6_address_t *ip6_addr = 0;
+ ip4_address_t ip4_addr;
+ ip6_address_t ip6_addr;
+ u8 add_ip4 = 0;
+ u8 add_ip6 = 0;
char hostname[FQDN_MAX_LENGTH];
/* Check the current state of the connection
{ /* UNEXPECTED scenario */
switch (sctp_conn->state)
{
- case SCTP_STATE_COOKIE_WAIT: /* TODO */
+ case SCTP_STATE_COOKIE_WAIT:
SCTP_ADV_DBG ("Received INIT chunk while in COOKIE_WAIT state");
- break;
- case SCTP_STATE_COOKIE_ECHOED: /* TODO */
+ sctp_prepare_initack_chunk_for_collision (sctp_conn,
+ SCTP_PRIMARY_PATH_IDX,
+ b0, &ip4_addr, &ip6_addr);
+ return SCTP_ERROR_NONE;
+ case SCTP_STATE_COOKIE_ECHOED:
+ case SCTP_STATE_SHUTDOWN_ACK_SENT:
SCTP_ADV_DBG ("Received INIT chunk while in COOKIE_ECHOED state");
- break;
+ if (sctp_conn->forming_association_changed == 0)
+ sctp_prepare_initack_chunk_for_collision (sctp_conn,
+ SCTP_PRIMARY_PATH_IDX,
+ b0, &ip4_addr,
+ &ip6_addr);
+ else
+ sctp_prepare_abort_for_collision (sctp_conn,
+ SCTP_PRIMARY_PATH_IDX, b0,
+ &ip4_addr, &ip6_addr);
+ return SCTP_ERROR_NONE;
}
}
SCTP_CONN_TRACKING_DBG ("sctp_conn->remote_initial_tsn = %u",
sctp_conn->remote_initial_tsn);
- sctp_conn->snd_opts.a_rwnd = clib_net_to_host_u32 (init_chunk->a_rwnd);
-
+ sctp_conn->peer_rwnd = clib_net_to_host_u32 (init_chunk->a_rwnd);
/*
* If the length specified in the INIT message is bigger than the size in bytes of our structure it means that
* optional parameters have been sent with the INIT chunk and we need to parse them.
{
sctp_ipv4_addr_param_t *ipv4 =
(sctp_ipv4_addr_param_t *) opt_params_hdr;
- clib_memcpy (ip4_addr, &ipv4->address,
- sizeof (ip4_address_t));
+ clib_memcpy_fast (&ip4_addr, &ipv4->address,
+ sizeof (ip4_address_t));
- sctp_sub_connection_add_ip4 (vlib_get_thread_index (), ipv4);
+ if (sctp_sub_connection_add_ip4 (vlib_get_main (),
+ &sctp_conn->sub_conn
+ [SCTP_PRIMARY_PATH_IDX].connection.
+ lcl_ip.ip4,
+ &ipv4->address) ==
+ SCTP_ERROR_NONE)
+ add_ip4 = 1;
break;
}
{
sctp_ipv6_addr_param_t *ipv6 =
(sctp_ipv6_addr_param_t *) opt_params_hdr;
- clib_memcpy (ip6_addr, &ipv6->address,
- sizeof (ip6_address_t));
+ clib_memcpy_fast (&ip6_addr, &ipv6->address,
+ sizeof (ip6_address_t));
- sctp_sub_connection_add_ip6 (vlib_get_thread_index (), ipv6);
+ if (sctp_sub_connection_add_ip6 (vlib_get_main (),
+ &sctp_conn->sub_conn
+ [SCTP_PRIMARY_PATH_IDX].connection.
+ lcl_ip.ip6,
+ &ipv6->address) ==
+ SCTP_ERROR_NONE)
+ add_ip6 = 1;
break;
}
{
sctp_hostname_param_t *hostname_addr =
(sctp_hostname_param_t *) opt_params_hdr;
- clib_memcpy (hostname, hostname_addr->hostname,
- FQDN_MAX_LENGTH);
+ clib_memcpy_fast (hostname, hostname_addr->hostname,
+ FQDN_MAX_LENGTH);
break;
}
case SCTP_SUPPORTED_ADDRESS_TYPES:
}
/* Reuse buffer to make init-ack and send */
- sctp_prepare_initack_chunk (sctp_conn, b0, ip4_addr, ip6_addr);
+ sctp_prepare_initack_chunk (sctp_conn, SCTP_PRIMARY_PATH_IDX, b0, &ip4_addr,
+ add_ip4, &ip6_addr, add_ip6);
return SCTP_ERROR_NONE;
}
always_inline u16
sctp_handle_init_ack (sctp_header_t * sctp_hdr,
sctp_chunks_common_hdr_t * sctp_chunk_hdr,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
- u16 sctp_implied_length)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 sctp_implied_length)
{
sctp_init_ack_chunk_t *init_ack_chunk =
(sctp_init_ack_chunk_t *) (sctp_hdr);
- ip4_address_t *ip4_addr = 0;
- ip6_address_t *ip6_addr = 0;
- sctp_state_cookie_param_t state_cookie;
char hostname[FQDN_MAX_LENGTH];
if (sctp_is_bundling (sctp_implied_length, &init_ack_chunk->chunk_hdr))
return SCTP_ERROR_BUNDLING_VIOLATION;
+ /* Stop the T1_INIT timer */
+ sctp_timer_reset (sctp_conn, idx, SCTP_TIMER_T1_INIT);
+
+ sctp_calculate_rto (sctp_conn, idx);
+
/* remote_tag to be placed in the VERIFICATION_TAG field of the COOKIE_ECHO chunk */
sctp_conn->remote_tag = init_ack_chunk->initiate_tag;
sctp_conn->remote_initial_tsn =
sctp_conn->next_tsn_expected = sctp_conn->remote_initial_tsn + 1;
SCTP_CONN_TRACKING_DBG ("sctp_conn->remote_initial_tsn = %u",
sctp_conn->remote_initial_tsn);
- sctp_conn->snd_opts.a_rwnd = clib_net_to_host_u32 (init_ack_chunk->a_rwnd);
+ sctp_conn->peer_rwnd = clib_net_to_host_u32 (init_ack_chunk->a_rwnd);
u16 length = vnet_sctp_get_chunk_length (sctp_chunk_hdr);
{
sctp_ipv4_addr_param_t *ipv4 =
(sctp_ipv4_addr_param_t *) opt_params_hdr;
- clib_memcpy (ip4_addr, &ipv4->address,
- sizeof (ip4_address_t));
- sctp_sub_connection_add_ip4 (vlib_get_thread_index (), ipv4);
+ sctp_sub_connection_add_ip4 (vlib_get_main (),
+ &sctp_conn->sub_conn
+ [SCTP_PRIMARY_PATH_IDX].connection.
+ lcl_ip.ip4, &ipv4->address);
break;
}
{
sctp_ipv6_addr_param_t *ipv6 =
(sctp_ipv6_addr_param_t *) opt_params_hdr;
- clib_memcpy (ip6_addr, &ipv6->address,
- sizeof (ip6_address_t));
- sctp_sub_connection_add_ip6 (vlib_get_thread_index (), ipv6);
+ sctp_sub_connection_add_ip6 (vlib_get_main (),
+ &sctp_conn->sub_conn
+ [SCTP_PRIMARY_PATH_IDX].connection.
+ lcl_ip.ip6, &ipv6->address);
break;
}
sctp_state_cookie_param_t *state_cookie_param =
(sctp_state_cookie_param_t *) opt_params_hdr;
- clib_memcpy (&state_cookie, state_cookie_param,
- sizeof (sctp_state_cookie_param_t));
+ clib_memcpy_fast (&(sctp_conn->cookie_param),
+ state_cookie_param,
+ sizeof (sctp_state_cookie_param_t));
+
break;
}
case SCTP_HOSTNAME_ADDRESS_TYPE:
{
sctp_hostname_param_t *hostname_addr =
(sctp_hostname_param_t *) opt_params_hdr;
- clib_memcpy (hostname, hostname_addr->hostname,
- FQDN_MAX_LENGTH);
+ clib_memcpy_fast (hostname, hostname_addr->hostname,
+ FQDN_MAX_LENGTH);
break;
}
case SCTP_UNRECOGNIZED_TYPE:
}
}
- sctp_prepare_cookie_echo_chunk (sctp_conn, b0, &state_cookie);
+ sctp_prepare_cookie_echo_chunk (sctp_conn, idx, b0, 1);
/* Start the T1_COOKIE timer */
- sctp_timer_set (sctp_conn, sctp_pick_conn_idx_on_chunk (COOKIE_ECHO),
- SCTP_TIMER_T1_COOKIE, SCTP_RTO_INIT);
+ sctp_timer_set (sctp_conn, idx,
+ SCTP_TIMER_T1_COOKIE, sctp_conn->sub_conn[idx].RTO);
return SCTP_ERROR_NONE;
}
+/** Enqueue data out-of-order for delivery to application */
+always_inline int
+sctp_session_enqueue_data_ooo (sctp_connection_t * sctp_conn,
+ vlib_buffer_t * b, u16 data_len, u8 conn_idx)
+{
+ int written, error = SCTP_ERROR_ENQUEUED;
+
+ written =
+ session_enqueue_stream_connection (&sctp_conn->
+ sub_conn[conn_idx].connection, b, 0,
+ 1 /* queue event */ ,
+ 0);
+
+ /* Update next_tsn_expected */
+ if (PREDICT_TRUE (written == data_len))
+ {
+ sctp_conn->next_tsn_expected += written;
+
+ SCTP_ADV_DBG ("CONN = %u, WRITTEN [%u] == DATA_LEN [%d]",
+ sctp_conn->sub_conn[conn_idx].connection.c_index,
+ written, data_len);
+ }
+ /* If more data written than expected, account for out-of-order bytes. */
+ else if (written > data_len)
+ {
+ sctp_conn->next_tsn_expected += written;
+
+ SCTP_ADV_DBG ("CONN = %u, WRITTEN [%u] > DATA_LEN [%d]",
+ sctp_conn->sub_conn[conn_idx].connection.c_index,
+ written, data_len);
+ }
+ else if (written > 0)
+ {
+ /* We've written something but FIFO is probably full now */
+ sctp_conn->next_tsn_expected += written;
+
+ error = SCTP_ERROR_PARTIALLY_ENQUEUED;
+
+ SCTP_ADV_DBG
+ ("CONN = %u, WRITTEN [%u] > 0 (SCTP_ERROR_PARTIALLY_ENQUEUED)",
+ sctp_conn->sub_conn[conn_idx].connection.c_index, written);
+ }
+ else
+ {
+ SCTP_ADV_DBG ("CONN = %u, WRITTEN == 0 (SCTP_ERROR_FIFO_FULL)",
+ sctp_conn->sub_conn[conn_idx].connection.c_index);
+
+ return SCTP_ERROR_FIFO_FULL;
+ }
+
+ /* TODO: Update out_of_order_map & SACK list */
+
+ return error;
+}
+
/** Enqueue data for delivery to application */
always_inline int
sctp_session_enqueue_data (sctp_connection_t * sctp_conn, vlib_buffer_t * b,
}
always_inline u8
-sctp_is_sack_delayable (sctp_connection_t * sctp_conn, u8 gapping)
+sctp_is_sack_delayable (sctp_connection_t * sctp_conn, u8 idx, u8 is_gapping)
{
- if (gapping != 0)
+ if (sctp_conn->conn_config.never_delay_sack)
+ {
+ SCTP_CONN_TRACKING_DBG ("sctp_conn->conn_config.never_delay_sack = ON");
+ return 0;
+ }
+
+ /* Section 4.4 of the RFC4960 */
+ if (sctp_conn->state == SCTP_STATE_SHUTDOWN_SENT)
+ {
+ SCTP_CONN_TRACKING_DBG ("sctp_conn->state = %s; SACK not delayable",
+ sctp_state_to_string (sctp_conn->state));
+ return 0;
+ }
+
+ if (is_gapping)
{
SCTP_CONN_TRACKING_DBG
("gapping != 0: CONN_INDEX = %u, sctp_conn->ack_state = %u",
sctp_conn->sub_conn[idx].connection.c_index, sctp_conn->ack_state);
- return 1;
+ return 0;
}
+ sctp_conn->ack_state += 1;
if (sctp_conn->ack_state >= MAX_ENQUEABLE_SACKS)
{
SCTP_CONN_TRACKING_DBG
("sctp_conn->ack_state >= MAX_ENQUEABLE_SACKS: CONN_INDEX = %u, sctp_conn->ack_state = %u",
sctp_conn->sub_conn[idx].connection.c_index, sctp_conn->ack_state);
- return 1;
+ return 0;
}
- sctp_conn->ack_state += 1;
+ return 1;
+}
- return 0;
+always_inline void
+sctp_is_connection_gapping (sctp_connection_t * sctp_conn, u32 tsn,
+ u8 * gapping)
+{
+ if (sctp_conn->next_tsn_expected != tsn) // It means data transmission is GAPPING
+ {
+ SCTP_CONN_TRACKING_DBG
+ ("GAPPING: CONN_INDEX = %u, sctp_conn->next_tsn_expected = %u, tsn = %u, diff = %u",
+ sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.c_index,
+ sctp_conn->next_tsn_expected, tsn,
+ sctp_conn->next_tsn_expected - tsn);
+
+ *gapping = 1;
+ }
}
always_inline u16
sctp_handle_data (sctp_payload_data_chunk_t * sctp_data_chunk,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b,
+ sctp_connection_t * sctp_conn, u8 idx, vlib_buffer_t * b,
u16 * next0)
{
u32 error = 0, n_data_bytes;
- u8 idx = sctp_pick_conn_idx_on_state (sctp_conn->state);
- u8 gapping = 0;
+ u8 is_gapping = 0;
/* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
if (sctp_conn->local_tag != sctp_data_chunk->sctp_hdr.verification_tag)
{
- return SCTP_ERROR_INVALID_TAG;
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
+ sctp_conn->sub_conn[idx].enqueue_state = SCTP_ERROR_INVALID_TAG;
+ return sctp_conn->sub_conn[idx].enqueue_state;
}
vnet_buffer (b)->sctp.sid = sctp_data_chunk->stream_id;
u32 tsn = clib_net_to_host_u32 (sctp_data_chunk->tsn);
vlib_buffer_advance (b, vnet_buffer (b)->sctp.data_offset);
- n_data_bytes = vnet_buffer (b)->sctp.data_len;
- ASSERT (n_data_bytes);
+ u32 chunk_len = vnet_sctp_get_chunk_length (&sctp_data_chunk->chunk_hdr) -
+ (sizeof (sctp_payload_data_chunk_t) - sizeof (sctp_header_t));
- if (sctp_conn->next_tsn_expected != tsn) // It means data transmission is GAPPING
- {
- SCTP_CONN_TRACKING_DBG
- ("GAPPING: CONN_INDEX = %u, sctp_conn->next_tsn_expected = %u, tsn = %u, diff = %u",
- sctp_conn->sub_conn[idx].connection.c_index,
- sctp_conn->next_tsn_expected, tsn,
- sctp_conn->next_tsn_expected - tsn);
+ ASSERT (vnet_buffer (b)->sctp.data_len);
+ ASSERT (chunk_len);
- gapping = 1;
+ /* Padding was added: see RFC 4096 section 3.3.1 */
+ if (vnet_buffer (b)->sctp.data_len > chunk_len)
+ {
+ /* Let's change the data_len to the right amount calculated here now.
+ * We cannot do that in the generic sctp46_input_dispatcher node since
+ * that is common to all CHUNKS handling.
+ */
+ vnet_buffer (b)->sctp.data_len = chunk_len;
+ /* We need to change b->current_length so that downstream calls to
+ * session_enqueue_stream_connection (called by sctp_session_enqueue_data)
+ * push the correct amount of data to be enqueued.
+ */
+ b->current_length = chunk_len;
}
+ n_data_bytes = vnet_buffer (b)->sctp.data_len;
+
+ sctp_is_connection_gapping (sctp_conn, tsn, &is_gapping);
sctp_conn->last_rcvd_tsn = tsn;
SCTP_ADV_DBG ("POINTER_WITH_DATA = %p", b->data);
- /* In order data, enqueue. Fifo figures out by itself if any out-of-order
- * segments can be enqueued after fifo tail offset changes. */
- error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
+ u8 bbit = vnet_sctp_get_bbit (&sctp_data_chunk->chunk_hdr);
+ u8 ebit = vnet_sctp_get_ebit (&sctp_data_chunk->chunk_hdr);
- *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
+ if (bbit == 1 && ebit == 1) /* Unfragmented message */
+ {
+ /* In order data, enqueue. Fifo figures out by itself if any out-of-order
+ * segments can be enqueued after fifo tail offset changes. */
+ if (PREDICT_FALSE (is_gapping == 1))
+ error =
+ sctp_session_enqueue_data_ooo (sctp_conn, b, n_data_bytes, idx);
+ else
+ error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
+ }
+ else if (bbit == 1 && ebit == 0) /* First piece of a fragmented user message */
+ {
+ error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
+ }
+ else if (bbit == 0 && ebit == 1) /* Last piece of a fragmented user message */
+ {
+ if (PREDICT_FALSE (is_gapping == 1))
+ error =
+ sctp_session_enqueue_data_ooo (sctp_conn, b, n_data_bytes, idx);
+ else
+ error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
+ }
+ else /* Middle piece of a fragmented user message */
+ {
+ if (PREDICT_FALSE (is_gapping == 1))
+ error =
+ sctp_session_enqueue_data_ooo (sctp_conn, b, n_data_bytes, idx);
+ else
+ error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
+ }
+ sctp_conn->last_rcvd_tsn = tsn;
+
+ SCTP_ADV_DBG ("POINTER_WITH_DATA = %p", b->data);
+
+ if (!sctp_is_sack_delayable (sctp_conn, idx, is_gapping))
+ {
+ *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
+ sctp_prepare_sack_chunk (sctp_conn, idx, b);
+ }
+ else
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
- if (sctp_is_sack_delayable (sctp_conn, gapping) != 0)
- sctp_prepare_sack_chunk (sctp_conn, b);
+ sctp_conn->sub_conn[idx].enqueue_state = error;
return error;
}
always_inline u16
sctp_handle_cookie_echo (sctp_header_t * sctp_hdr,
sctp_chunks_common_hdr_t * sctp_chunk_hdr,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 * next0)
{
+ u64 now = sctp_time_now ();
- /* Build TCB */
- u8 idx = sctp_pick_conn_idx_on_chunk (COOKIE_ECHO);
+ sctp_cookie_echo_chunk_t *cookie_echo =
+ (sctp_cookie_echo_chunk_t *) sctp_hdr;
/* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
if (sctp_conn->local_tag != sctp_hdr->verification_tag)
{
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_INVALID_TAG;
}
- sctp_prepare_cookie_ack_chunk (sctp_conn, b0);
+ sctp_calculate_rto (sctp_conn, idx);
+
+ u64 creation_time =
+ clib_net_to_host_u64 (cookie_echo->cookie.creation_time);
+ u64 cookie_lifespan =
+ clib_net_to_host_u32 (cookie_echo->cookie.cookie_lifespan);
+
+ if (now > creation_time + cookie_lifespan)
+ {
+ SCTP_DBG ("now (%u) > creation_time (%u) + cookie_lifespan (%u)",
+ now, creation_time, cookie_lifespan);
+ return SCTP_ERROR_COOKIE_ECHO_VIOLATION;
+ }
+
+ sctp_prepare_cookie_ack_chunk (sctp_conn, idx, b0);
/* Change state */
sctp_conn->state = SCTP_STATE_ESTABLISHED;
+ sctp_conn->sub_conn[idx].state = SCTP_SUBCONN_STATE_UP;
+ *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
+
+ sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
+ sctp_conn->sub_conn[idx].RTO);
stream_session_accept_notify (&sctp_conn->sub_conn[idx].connection);
always_inline u16
sctp_handle_cookie_ack (sctp_header_t * sctp_hdr,
sctp_chunks_common_hdr_t * sctp_chunk_hdr,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 * next0)
{
-
- /* Stop T1_COOKIE timer */
- u8 idx = sctp_pick_conn_idx_on_chunk (COOKIE_ACK);
-
/* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
if (sctp_conn->local_tag != sctp_hdr->verification_tag)
{
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_INVALID_TAG;
}
+ sctp_calculate_rto (sctp_conn, idx);
+
sctp_timer_reset (sctp_conn, idx, SCTP_TIMER_T1_COOKIE);
/* Change state */
sctp_conn->state = SCTP_STATE_ESTABLISHED;
+ sctp_conn->sub_conn[idx].state = SCTP_SUBCONN_STATE_UP;
- stream_session_accept_notify (&sctp_conn->sub_conn[idx].connection);
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
- sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T3_RXTX, SCTP_RTO_INIT);
+ sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
+ sctp_conn->sub_conn[idx].RTO);
+
+ stream_session_accept_notify (&sctp_conn->sub_conn[idx].connection);
return SCTP_ERROR_NONE;
ip6_header_t *ip6_hdr = 0;
sctp_connection_t *sctp_conn, *new_sctp_conn;
u16 sctp_implied_length = 0;
- u16 error0 = SCTP_ERROR_NONE, next0 = SCTP_RCV_PHASE_N_NEXT;
+ u16 error0 = SCTP_ERROR_NONE, next0 = sctp_next_drop (is_ip4);
u8 idx;
bi0 = from[0];
sctp_half_open_connection_get (vnet_buffer (b0)->
sctp.connection_index);
- if (PREDICT_FALSE (sctp_conn == 0))
- {
- error0 = SCTP_ERROR_INVALID_CONNECTION;
- goto drop;
- }
-
if (PREDICT_FALSE (sctp_conn == 0))
{
SCTP_ADV_DBG
{
ip4_hdr = vlib_buffer_get_current (b0);
sctp_hdr = ip4_next_header (ip4_hdr);
+ idx = sctp_sub_conn_id_via_ip4h (sctp_conn, ip4_hdr);
}
else
{
ip6_hdr = vlib_buffer_get_current (b0);
sctp_hdr = ip6_next_header (ip6_hdr);
+ idx = sctp_sub_conn_id_via_ip6h (sctp_conn, ip6_hdr);
}
- idx = sctp_pick_conn_idx_on_state (sctp_conn->state);
+ sctp_conn->sub_conn[idx].subconn_idx = idx;
sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
- transport_connection_t *trans_conn =
- &sctp_conn->sub_conn[idx].connection;
-
- trans_conn->lcl_port = sctp_hdr->dst_port;
- trans_conn->rmt_port = sctp_hdr->src_port;
- trans_conn->is_ip4 = is_ip4;
-
- if (is_ip4)
- {
- trans_conn->lcl_ip.ip4.as_u32 = ip4_hdr->dst_address.as_u32;
- trans_conn->rmt_ip.ip4.as_u32 = ip4_hdr->src_address.as_u32;
- }
- else
- {
- clib_memcpy (&trans_conn->lcl_ip.ip6, &ip6_hdr->dst_address,
- sizeof (ip6_address_t));
- clib_memcpy (&trans_conn->rmt_ip.ip6, &ip6_hdr->src_address,
- sizeof (ip6_address_t));
- }
-
sctp_chunk_hdr =
(sctp_chunks_common_hdr_t *) (&full_hdr->common_hdr);
if (error0 == SCTP_ERROR_NONE)
{
pool_get (tm->connections[my_thread_index], new_sctp_conn);
- clib_memcpy (new_sctp_conn, sctp_conn,
- sizeof (*new_sctp_conn));
+ clib_memcpy_fast (new_sctp_conn, sctp_conn,
+ sizeof (*new_sctp_conn));
new_sctp_conn->sub_conn[idx].c_c_index =
new_sctp_conn - tm->connections[my_thread_index];
new_sctp_conn->sub_conn[idx].c_thread_index =
my_thread_index;
- new_sctp_conn->sub_conn[idx].parent = new_sctp_conn;
+ new_sctp_conn->sub_conn[idx].PMTU =
+ sctp_conn->sub_conn[idx].PMTU;
+ new_sctp_conn->sub_conn[idx].subconn_idx = idx;
if (sctp_half_open_connection_cleanup (sctp_conn))
{
sctp_connection_timers_init (new_sctp_conn);
+ sctp_init_cwnd (new_sctp_conn);
+
error0 =
sctp_handle_init_ack (sctp_hdr, sctp_chunk_hdr,
- new_sctp_conn, b0,
+ new_sctp_conn, idx, b0,
sctp_implied_length);
- sctp_init_mss (new_sctp_conn);
- //sctp_init_snd_vars (new_sctp_conn);
-
if (session_stream_connect_notify
(&new_sctp_conn->sub_conn[idx].connection, 0))
{
sctp_connection_cleanup (new_sctp_conn);
goto drop;
}
+ next0 = sctp_next_output (is_ip4);
}
- next0 = sctp_next_output (is_ip4);
+ break;
+
+ case OPERATION_ERROR:
+ error0 =
+ sctp_handle_operation_err (sctp_hdr, sctp_conn, idx, b0,
+ &next0);
break;
/* All UNEXPECTED scenarios (wrong chunk received per state-machine)
* hence we should never get to the "default" case below.
*/
default:
- error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ error0 = SCTP_ERROR_UNKNOWN_CHUNK;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
{
clib_warning ("error while parsing chunk");
sctp_connection_cleanup (sctp_conn);
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
always_inline u16
sctp_handle_shutdown (sctp_header_t * sctp_hdr,
sctp_chunks_common_hdr_t * sctp_chunk_hdr,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
- u16 sctp_implied_length)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 sctp_implied_length,
+ u16 * next0)
{
sctp_shutdown_association_chunk_t *shutdown_chunk =
(sctp_shutdown_association_chunk_t *) (sctp_hdr);
/* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
if (sctp_conn->local_tag != sctp_hdr->verification_tag)
{
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_INVALID_TAG;
}
case SCTP_STATE_ESTABLISHED:
if (sctp_check_outstanding_data_chunks (sctp_conn) == 0)
sctp_conn->state = SCTP_STATE_SHUTDOWN_RECEIVED;
+ sctp_send_shutdown_ack (sctp_conn, idx, b0);
break;
case SCTP_STATE_SHUTDOWN_SENT:
- sctp_send_shutdown_ack (sctp_conn);
+ sctp_send_shutdown_ack (sctp_conn, idx, b0);
break;
}
+ *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
+
return SCTP_ERROR_NONE;
}
always_inline u16
sctp_handle_shutdown_ack (sctp_header_t * sctp_hdr,
sctp_chunks_common_hdr_t * sctp_chunk_hdr,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
- u16 sctp_implied_length)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 sctp_implied_length,
+ u16 * next0)
{
sctp_shutdown_ack_chunk_t *shutdown_ack_chunk =
(sctp_shutdown_ack_chunk_t *) (sctp_hdr);
/* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
if (sctp_conn->local_tag != sctp_hdr->verification_tag)
{
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_INVALID_TAG;
}
* - STOP T2_SHUTDOWN timer
* - SEND SHUTDOWN_COMPLETE chunk
*/
- sctp_timer_reset (sctp_conn, MAIN_SCTP_SUB_CONN_IDX,
- SCTP_TIMER_T2_SHUTDOWN);
- sctp_send_shutdown_complete (sctp_conn);
+ sctp_timer_reset (sctp_conn, SCTP_PRIMARY_PATH_IDX, SCTP_TIMER_T2_SHUTDOWN);
+
+ sctp_send_shutdown_complete (sctp_conn, idx, b0);
+
+ *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_NONE;
}
always_inline u16
sctp_handle_shutdown_complete (sctp_header_t * sctp_hdr,
sctp_chunks_common_hdr_t * sctp_chunk_hdr,
- sctp_connection_t * sctp_conn,
- vlib_buffer_t * b0, u16 sctp_implied_length)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 sctp_implied_length,
+ u16 * next0)
{
sctp_shutdown_complete_chunk_t *shutdown_complete =
(sctp_shutdown_complete_chunk_t *) (sctp_hdr);
/* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
if (sctp_conn->local_tag != sctp_hdr->verification_tag)
{
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_INVALID_TAG;
}
if (sctp_is_bundling (sctp_implied_length, &shutdown_complete->chunk_hdr))
return SCTP_ERROR_BUNDLING_VIOLATION;
- sctp_timer_reset (sctp_conn, MAIN_SCTP_SUB_CONN_IDX,
- SCTP_TIMER_T2_SHUTDOWN);
+ sctp_timer_reset (sctp_conn, idx, SCTP_TIMER_T2_SHUTDOWN);
+
+ session_transport_closing_notify (&sctp_conn->sub_conn[idx].connection);
sctp_conn->state = SCTP_STATE_CLOSED;
- stream_session_disconnect_notify (&sctp_conn->sub_conn
- [MAIN_SCTP_SUB_CONN_IDX].connection);
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_NONE;
}
sctp_connection_t *sctp_conn;
u16 sctp_implied_length = 0;
u16 error0 = SCTP_ERROR_NONE, next0 = SCTP_RCV_PHASE_N_NEXT;
+ u8 idx = 0;
bi0 = from[0];
to_next[0] = bi0;
{
ip4_hdr = vlib_buffer_get_current (b0);
sctp_hdr = ip4_next_header (ip4_hdr);
+ idx = sctp_sub_conn_id_via_ip4h (sctp_conn, ip4_hdr);
}
else
{
ip6_hdr = vlib_buffer_get_current (b0);
sctp_hdr = ip6_next_header (ip6_hdr);
+ idx = sctp_sub_conn_id_via_ip6h (sctp_conn, ip6_hdr);
}
sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
sctp_implied_length =
sctp_calculate_implied_length (ip4_hdr, ip6_hdr, is_ip4);
- switch (vnet_sctp_get_chunk_type (sctp_chunk_hdr))
+ u8 chunk_type = vnet_sctp_get_chunk_type (sctp_chunk_hdr);
+ switch (chunk_type)
{
case SHUTDOWN:
error0 =
- sctp_handle_shutdown (sctp_hdr, sctp_chunk_hdr, sctp_conn, b0,
- sctp_implied_length);
- next0 = sctp_next_output (is_ip4);
+ sctp_handle_shutdown (sctp_hdr, sctp_chunk_hdr, sctp_conn,
+ idx, b0, sctp_implied_length, &next0);
break;
case SHUTDOWN_ACK:
error0 =
sctp_handle_shutdown_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
- b0, sctp_implied_length);
- next0 = sctp_next_output (is_ip4);
+ idx, b0, sctp_implied_length,
+ &next0);
break;
case SHUTDOWN_COMPLETE:
error0 =
sctp_handle_shutdown_complete (sctp_hdr, sctp_chunk_hdr,
- sctp_conn, b0,
- sctp_implied_length);
+ sctp_conn, idx, b0,
+ sctp_implied_length, &next0);
sctp_connection_cleanup (sctp_conn);
- next0 = sctp_next_output (is_ip4);
break;
/*
case DATA:
error0 =
sctp_handle_data ((sctp_payload_data_chunk_t *) sctp_hdr,
- sctp_conn, b0, &next0);
- next0 = sctp_next_output (is_ip4);
+ sctp_conn, idx, b0, &next0);
+ break;
+
+ case OPERATION_ERROR:
+ error0 =
+ sctp_handle_operation_err (sctp_hdr, sctp_conn, idx, b0,
+ &next0);
break;
+ case COOKIE_ECHO: /* Cookie Received While Shutting Down */
+ sctp_prepare_operation_error (sctp_conn, idx, b0,
+ COOKIE_RECEIVED_WHILE_SHUTTING_DOWN);
+ error0 = SCTP_ERROR_NONE;
+ next0 = sctp_next_output (is_ip4);
+ break;
/* All UNEXPECTED scenarios (wrong chunk received per state-machine)
* are handled by the input-dispatcher function using the table-lookup
* hence we should never get to the "default" case below.
*/
default:
- error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ error0 = SCTP_ERROR_UNKNOWN_CHUNK;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
{
clib_warning ("error while parsing chunk");
sctp_connection_cleanup (sctp_conn);
- next0 = SCTP_NEXT_DROP;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
{
sctp_trace =
vlib_add_trace (vm, node, b0, sizeof (*sctp_trace));
- clib_memcpy (&sctp_trace->sctp_header, sctp_hdr,
- sizeof (sctp_trace->sctp_header));
- clib_memcpy (&sctp_trace->sctp_connection, sctp_conn,
- sizeof (sctp_trace->sctp_connection));
+
+ if (sctp_hdr != NULL)
+ clib_memcpy_fast (&sctp_trace->sctp_header, sctp_hdr,
+ sizeof (sctp_trace->sctp_header));
+
+ if (sctp_conn != NULL)
+ clib_memcpy_fast (&sctp_trace->sctp_connection, sctp_conn,
+ sizeof (sctp_trace->sctp_connection));
}
b0->error = node->errors[error0];
sctp_connection_t * sctp_conn, u8 idx, vlib_buffer_t * b0,
u16 * next0)
{
+
/* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
if (sctp_conn->local_tag != sack_chunk->sctp_hdr.verification_tag)
{
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_INVALID_TAG;
}
- sctp_timer_update (sctp_conn, idx, SCTP_TIMER_T3_RXTX, SCTP_RTO_INIT);
+ sctp_conn->sub_conn[idx].state = SCTP_SUBCONN_SACK_RECEIVED;
- *next0 = sctp_next_output (sctp_conn->sub_conn[idx].connection.is_ip4);
+ sctp_conn->sub_conn[idx].last_seen = sctp_time_now ();
+
+ /* Section 7.2.2; point (2) */
+ if (sctp_conn->sub_conn[idx].cwnd > sctp_conn->sub_conn[idx].ssthresh)
+ sctp_conn->sub_conn[idx].partially_acked_bytes =
+ sctp_conn->next_tsn - sack_chunk->cumulative_tsn_ack;
+
+ /* Section 7.2.2; point (5) */
+ if (sctp_conn->next_tsn - sack_chunk->cumulative_tsn_ack == 0)
+ sctp_conn->sub_conn[idx].partially_acked_bytes = 0;
+
+ sctp_conn->last_unacked_tsn = sack_chunk->cumulative_tsn_ack;
+
+ sctp_calculate_rto (sctp_conn, idx);
+
+ sctp_timer_update (sctp_conn, idx, SCTP_TIMER_T3_RXTX,
+ sctp_conn->sub_conn[idx].RTO);
+
+ sctp_conn->sub_conn[idx].RTO_pending = 0;
+
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
return SCTP_ERROR_NONE;
}
always_inline u16
sctp_handle_heartbeat (sctp_hb_req_chunk_t * sctp_hb_chunk,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
- u16 * next0)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 * next0)
{
+ /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
+ if (sctp_conn->local_tag != sctp_hb_chunk->sctp_hdr.verification_tag)
+ {
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
+ return SCTP_ERROR_INVALID_TAG;
+ }
+
+ sctp_prepare_heartbeat_ack_chunk (sctp_conn, idx, b0);
+
+ *next0 = sctp_next_output (sctp_conn->sub_conn[idx].connection.is_ip4);
+
return SCTP_ERROR_NONE;
}
always_inline u16
sctp_handle_heartbeat_ack (sctp_hb_ack_chunk_t * sctp_hb_ack_chunk,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
- u16 * next0)
+ sctp_connection_t * sctp_conn, u8 idx,
+ vlib_buffer_t * b0, u16 * next0)
{
+ sctp_conn->sub_conn[idx].last_seen = sctp_time_now ();
+
+ sctp_conn->sub_conn[idx].unacknowledged_hb -= 1;
+
+ sctp_timer_update (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
+ sctp_conn->sub_conn[idx].RTO);
+
+ *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
+
return SCTP_ERROR_NONE;
}
always_inline void
-sctp_node_inc_counter (vlib_main_t * vm, u32 tcp4_node, u32 tcp6_node,
+sctp_node_inc_counter (vlib_main_t * vm, u32 sctp4_node, u32 sctp6_node,
u8 is_ip4, u8 evt, u8 val)
{
if (PREDICT_TRUE (!val))
return;
if (is_ip4)
- vlib_node_increment_counter (vm, tcp4_node, evt, val);
+ vlib_node_increment_counter (vm, sctp4_node, evt, val);
else
- vlib_node_increment_counter (vm, tcp6_node, evt, val);
+ vlib_node_increment_counter (vm, sctp6_node, evt, val);
}
always_inline uword
ip6_header_t *ip6_hdr;
sctp_connection_t *child_conn;
sctp_connection_t *sctp_listener;
- u16 next0 = SCTP_LISTEN_PHASE_N_NEXT, error0 = SCTP_ERROR_ENQUEUED;
+ u16 next0 = sctp_next_drop (is_ip4), error0 = SCTP_ERROR_ENQUEUED;
bi0 = from[0];
to_next[0] = bi0;
child_conn =
sctp_lookup_connection (sctp_listener->sub_conn
- [MAIN_SCTP_SUB_CONN_IDX].c_fib_index, b0,
+ [SCTP_PRIMARY_PATH_IDX].c_fib_index, b0,
my_thread_index, is_ip4);
if (PREDICT_FALSE (child_conn->state != SCTP_STATE_CLOSED))
{
SCTP_DBG
("conn_index = %u: child_conn->state != SCTP_STATE_CLOSED.... STATE=%s",
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
connection.c_index,
sctp_state_to_string (child_conn->state));
error0 = SCTP_ERROR_CREATE_EXISTS;
/* Create child session and send SYN-ACK */
child_conn = sctp_connection_new (my_thread_index);
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].parent = child_conn;
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_lcl_port =
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].subconn_idx =
+ SCTP_PRIMARY_PATH_IDX;
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_lcl_port =
sctp_hdr->dst_port;
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_rmt_port =
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_rmt_port =
sctp_hdr->src_port;
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_is_ip4 = is_ip4;
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.proto =
- sctp_listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.proto;
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_is_ip4 = is_ip4;
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.proto =
+ sctp_listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.proto;
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].PMTU =
+ sctp_listener->sub_conn[SCTP_PRIMARY_PATH_IDX].PMTU;
child_conn->state = SCTP_STATE_CLOSED;
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.fib_index =
+ sctp_listener->sub_conn[SCTP_PRIMARY_PATH_IDX].
+ connection.fib_index;
if (is_ip4)
{
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_lcl_ip4.as_u32 =
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_lcl_ip4.as_u32 =
ip4_hdr->dst_address.as_u32;
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_rmt_ip4.as_u32 =
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_rmt_ip4.as_u32 =
ip4_hdr->src_address.as_u32;
}
else
{
- clib_memcpy (&child_conn->
- sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_lcl_ip6,
- &ip6_hdr->dst_address, sizeof (ip6_address_t));
- clib_memcpy (&child_conn->
- sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_rmt_ip6,
- &ip6_hdr->src_address, sizeof (ip6_address_t));
+ clib_memcpy_fast (&child_conn->
+ sub_conn[SCTP_PRIMARY_PATH_IDX].c_lcl_ip6,
+ &ip6_hdr->dst_address,
+ sizeof (ip6_address_t));
+ clib_memcpy_fast (&child_conn->
+ sub_conn[SCTP_PRIMARY_PATH_IDX].c_rmt_ip6,
+ &ip6_hdr->src_address,
+ sizeof (ip6_address_t));
}
sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
sctp_chunks_common_hdr_t *sctp_chunk_hdr = &full_hdr->common_hdr;
u8 chunk_type = vnet_sctp_get_chunk_type (sctp_chunk_hdr);
- if (chunk_type != INIT)
+ if (chunk_type != INIT && chunk_type != DATA
+ && chunk_type != OPERATION_ERROR)
{
SCTP_DBG
("conn_index = %u: chunk_type != INIT... chunk_type=%s",
- child_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].
+ child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
connection.c_index, sctp_chunk_to_string (chunk_type));
- error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ error0 = SCTP_ERROR_UNKNOWN_CHUNK;
+ next0 = sctp_next_drop (is_ip4);
goto drop;
}
sctp_init_snd_vars (child_conn);
+ sctp_init_cwnd (child_conn);
+
error0 =
sctp_handle_init (sctp_hdr, sctp_chunk_hdr, child_conn, b0,
sctp_implied_length);
- sctp_init_mss (child_conn);
-
if (error0 == SCTP_ERROR_NONE)
{
if (stream_session_accept
(&child_conn->
- sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection,
+ sub_conn[SCTP_PRIMARY_PATH_IDX].connection,
sctp_listener->
- sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_s_index, 0))
+ sub_conn[SCTP_PRIMARY_PATH_IDX].c_s_index, 0))
{
clib_warning ("session accept fail");
sctp_connection_cleanup (child_conn);
error0 = SCTP_ERROR_CREATE_SESSION_FAIL;
goto drop;
}
+ next0 = sctp_next_output (is_ip4);
}
- next0 = sctp_next_output (is_ip4);
break;
/* Reception of a DATA chunk whilst in the CLOSED state is called
*/
case DATA:
break;
+
+ case OPERATION_ERROR:
+ error0 =
+ sctp_handle_operation_err (sctp_hdr, child_conn,
+ SCTP_PRIMARY_PATH_IDX, b0, &next0);
+ break;
}
drop:
{
sctp_rx_trace_t *t0 =
vlib_add_trace (vm, node, b0, sizeof (*t0));
- clib_memcpy (&t0->sctp_header, sctp_hdr,
- sizeof (t0->sctp_header));
- clib_memcpy (&t0->sctp_connection, sctp_listener,
- sizeof (t0->sctp_connection));
+ clib_memcpy_fast (&t0->sctp_header, sctp_hdr,
+ sizeof (t0->sctp_header));
+ clib_memcpy_fast (&t0->sctp_connection, sctp_listener,
+ sizeof (t0->sctp_connection));
}
b0->error = node->errors[error0];
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];
{
ip4_hdr = vlib_buffer_get_current (b0);
sctp_hdr = ip4_next_header (ip4_hdr);
+ idx = sctp_sub_conn_id_via_ip4h (sctp_conn, ip4_hdr);
}
else
{
ip6_hdr = vlib_buffer_get_current (b0);
sctp_hdr = ip6_next_header (ip6_hdr);
+ idx = sctp_sub_conn_id_via_ip6h (sctp_conn, ip6_hdr);
}
- idx = sctp_pick_conn_idx_on_state (sctp_conn->state);
+ sctp_conn->sub_conn[idx].subconn_idx = idx;
sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-
- transport_connection_t *trans_conn =
- &sctp_conn->sub_conn[idx].connection;
-
- trans_conn->lcl_port = sctp_hdr->dst_port;
- trans_conn->rmt_port = sctp_hdr->src_port;
- trans_conn->is_ip4 = is_ip4;
-
- sctp_conn->sub_conn[idx].parent = sctp_conn;
-
- if (is_ip4)
- {
- trans_conn->lcl_ip.ip4.as_u32 = ip4_hdr->dst_address.as_u32;
- trans_conn->rmt_ip.ip4.as_u32 = ip4_hdr->src_address.as_u32;
- }
- else
- {
- clib_memcpy (&trans_conn->lcl_ip.ip6, &ip6_hdr->dst_address,
- sizeof (ip6_address_t));
- clib_memcpy (&trans_conn->rmt_ip.ip6, &ip6_hdr->src_address,
- sizeof (ip6_address_t));
- }
-
sctp_chunk_hdr =
(sctp_chunks_common_hdr_t *) (&full_hdr->common_hdr);
case COOKIE_ECHO:
error0 =
sctp_handle_cookie_echo (sctp_hdr, sctp_chunk_hdr, sctp_conn,
- b0);
- next0 = sctp_next_output (is_ip4);
+ idx, b0, &next0);
break;
case COOKIE_ACK:
error0 =
sctp_handle_cookie_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
- b0);
- next0 = sctp_next_output (is_ip4);
+ idx, b0, &next0);
break;
case SACK:
case HEARTBEAT:
error0 =
sctp_handle_heartbeat ((sctp_hb_req_chunk_t *) sctp_hdr,
- sctp_conn, b0, &next0);
+ sctp_conn, idx, b0, &next0);
break;
case HEARTBEAT_ACK:
error0 =
sctp_handle_heartbeat_ack ((sctp_hb_ack_chunk_t *) sctp_hdr,
- sctp_conn, b0, &next0);
+ sctp_conn, idx, b0, &next0);
break;
case DATA:
error0 =
sctp_handle_data ((sctp_payload_data_chunk_t *) sctp_hdr,
- sctp_conn, b0, &next0);
+ sctp_conn, idx, b0, &next0);
+ break;
+
+ case OPERATION_ERROR:
+ error0 =
+ sctp_handle_operation_err (sctp_hdr, sctp_conn, idx, b0,
+ &next0);
break;
/* All UNEXPECTED scenarios (wrong chunk received per state-machine)
* hence we should never get to the "default" case below.
*/
default:
- error0 = SCTP_ERROR_UNKOWN_CHUNK;
- next0 = SCTP_NEXT_DROP;
+ error0 = SCTP_ERROR_UNKNOWN_CHUNK;
+ next0 = sctp_next_drop (is_ip4);
goto done;
}
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
- vnet_buffer (b0)->tcp.flags = 0;
+ vnet_buffer (b0)->sctp.flags = 0;
fib_index0 = vnet_buffer (b0)->ip.fib_index;
/* Checksum computed by ipx_local no need to compute again */
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; sending back OPERATION_ERROR chunk");
+
+ sctp_prepare_operation_error (sctp_conn, SCTP_PRIMARY_PATH_IDX,
+ b0, UNRECOGNIZED_CHUNK_TYPE);
+
+ error0 = SCTP_ERROR_UNKNOWN_CHUNK;
+ next0 = sctp_next_output (is_ip4);
+ goto done;
+ }
-#if SCTP_DEBUG_STATE_MACHINE
- u8 idx = sctp_pick_conn_idx_on_state (sctp_conn->state);
-#endif
vnet_buffer (b0)->sctp.hdr_offset =
(u8 *) sctp_hdr - (u8 *) vlib_buffer_get_current (b0);
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;
-
- SCTP_DBG_STATE_MACHINE ("CONNECTION_INDEX = %u: "
- "CURRENT_CONNECTION_STATE = %s,"
- "CHUNK_TYPE_RECEIVED = %s "
- "NEXT_PHASE = %s",
- sctp_conn->sub_conn
- [idx].connection.c_index,
- sctp_state_to_string (sctp_conn->state),
- sctp_chunk_to_string (type),
- phase_to_string (next0));
+ next0 = tm->dispatch_table[sctp_conn->state][chunk_type].next;
+ error0 = tm->dispatch_table[sctp_conn->state][chunk_type].error;
- if (type == DATA)
+ SCTP_DBG_STATE_MACHINE
+ ("S_INDEX = %u, C_INDEX = %u, TRANS_CONN = %p, SCTP_CONN = %p, CURRENT_CONNECTION_STATE = %s,"
+ "CHUNK_TYPE_RECEIVED = %s " "NEXT_PHASE = %s",
+ sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
+ connection.s_index,
+ sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
+ connection.c_index, trans_conn, sctp_conn,
+ sctp_state_to_string (sctp_conn->state),
+ sctp_chunk_to_string (chunk_type), phase_to_string (next0));
+
+ if (chunk_type == DATA)
SCTP_ADV_DBG ("n_advance_bytes0 = %u, n_data_bytes0 = %u",
n_advance_bytes0, n_data_bytes0);
_(CLOSED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(CLOSED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(CLOSED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION); /* UNEXPECTED SHUTDOWN_COMPLETE chunk */
+ _(CLOSED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE);
- _(COOKIE_WAIT, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_NONE);
+ _(COOKIE_WAIT, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_NONE); /* UNEXPECTED DATA chunk which requires special handling */
_(COOKIE_WAIT, INIT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE); /* UNEXPECTED INIT chunk which requires special handling */
_(COOKIE_WAIT, INIT_ACK, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);
_(COOKIE_WAIT, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION); /* UNEXPECTED SACK chunk */
_(COOKIE_WAIT, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(COOKIE_WAIT, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(COOKIE_WAIT, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION); /* UNEXPECTED SHUTDOWN_COMPLETE chunk */
+ _(COOKIE_WAIT, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
+ SCTP_ERROR_NONE);
_(COOKIE_ECHOED, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_NONE);
_(COOKIE_ECHOED, INIT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE); /* UNEXPECTED INIT chunk which requires special handling */
_(COOKIE_ECHOED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(COOKIE_ECHOED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(COOKIE_ECHOED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION); /* UNEXPECTED SHUTDOWN_COMPLETE chunk */
+ _(COOKIE_ECHOED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
+ SCTP_ERROR_NONE);
_(ESTABLISHED, DATA, SCTP_INPUT_NEXT_ESTABLISHED_PHASE, SCTP_ERROR_NONE);
_(ESTABLISHED, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION); /* UNEXPECTED INIT chunk */
_(ESTABLISHED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(ESTABLISHED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(ESTABLISHED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION); /* UNEXPECTED SHUTDOWN_COMPLETE chunk */
+ _(ESTABLISHED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_PENDING, DATA, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
_(SHUTDOWN_PENDING, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION); /* UNEXPECTED INIT chunk */
SCTP_ERROR_NONE);
_(SHUTDOWN_PENDING, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN_ACK chunk */
_(SHUTDOWN_PENDING, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION); /* UNEXPECTED OPERATION_ERROR chunk */
- _(SHUTDOWN_PENDING, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION); /* UNEXPECTED COOKIE_ECHO chunk */
+ _(SHUTDOWN_PENDING, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_PENDING, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED COOKIE_ACK chunk */
_(SHUTDOWN_PENDING, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(SHUTDOWN_PENDING, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(SHUTDOWN_PENDING, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION); /* UNEXPECTED SHUTDOWN_COMPLETE chunk */
+ _(SHUTDOWN_PENDING, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_SENT, DATA, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
_(SHUTDOWN_SENT, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION); /* UNEXPECTED INIT chunk */
_(SHUTDOWN_SENT, SHUTDOWN, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
_(SHUTDOWN_SENT, SHUTDOWN_ACK, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
SCTP_ERROR_NONE);
- _(SHUTDOWN_SENT, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION); /* UNEXPECTED COOKIE_ECHO chunk */
+ _(SHUTDOWN_SENT, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_SENT, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED COOKIE_ACK chunk */
_(SHUTDOWN_SENT, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(SHUTDOWN_SENT, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(SHUTDOWN_SENT, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION); /* UNEXPECTED SHUTDOWN_COMPLETE chunk */
+ _(SHUTDOWN_SENT, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_RECEIVED, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_DATA_CHUNK_VIOLATION); /* UNEXPECTED DATA chunk */
_(SHUTDOWN_RECEIVED, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION); /* UNEXPECTED INIT chunk */
_(SHUTDOWN_RECEIVED, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN chunk */
_(SHUTDOWN_RECEIVED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
SCTP_ERROR_NONE);
- _(SHUTDOWN_RECEIVED, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION); /* UNEXPECTED COOKIE_ECHO chunk */
+ _(SHUTDOWN_RECEIVED, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_RECEIVED, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED COOKIE_ACK chunk */
_(SHUTDOWN_RECEIVED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(SHUTDOWN_RECEIVED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(SHUTDOWN_RECEIVED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION); /* UNEXPECTED SHUTDOWN_COMPLETE chunk */
+ _(SHUTDOWN_RECEIVED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_ACK_SENT, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_DATA_CHUNK_VIOLATION); /* UNEXPECTED DATA chunk */
- _(SHUTDOWN_ACK_SENT, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION); /* UNEXPECTED INIT chunk */
+ _(SHUTDOWN_ACK_SENT, INIT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE); /* UNEXPECTED INIT chunk */
_(SHUTDOWN_ACK_SENT, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED INIT_ACK chunk */
_(SHUTDOWN_ACK_SENT, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION); /* UNEXPECTED INIT chunk */
_(SHUTDOWN_ACK_SENT, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT chunk */
_(SHUTDOWN_ACK_SENT, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION); /* UNEXPECTED ABORT chunk */
_(SHUTDOWN_ACK_SENT, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN chunk */
_(SHUTDOWN_ACK_SENT, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN_ACK chunk */
- _(SHUTDOWN_ACK_SENT, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION); /* UNEXPECTED COOKIE_ECHO chunk */
+ _(SHUTDOWN_ACK_SENT, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
+ SCTP_ERROR_NONE);
_(SHUTDOWN_ACK_SENT, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED COOKIE_ACK chunk */
_(SHUTDOWN_ACK_SENT, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION); /* UNEXPECTED ECNE chunk */
_(SHUTDOWN_ACK_SENT, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION); /* UNEXPECTED CWR chunk */
_(SHUTDOWN_ACK_SENT, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
SCTP_ERROR_NONE);
+ _(SHUTDOWN_ACK_SENT, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
+ SCTP_ERROR_NONE);
/* TODO: Handle COOKIE ECHO when a TCB Exists */
Code Review / vpp.git / blobdiff