+++ /dev/null
-/*
- * Copyright (c) 2017 SUSE LLC.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include <vppinfra/sparse_vec.h>
-#include <vnet/sctp/sctp.h>
-#include <vnet/sctp/sctp_packet.h>
-#include <vnet/sctp/sctp_debug.h>
-#include <vnet/session/session.h>
-#include <math.h>
-
-static char *sctp_error_strings[] = {
-#define sctp_error(n,s) s,
-#include <vnet/sctp/sctp_error.def>
-#undef sctp_error
-};
-
-/* All SCTP nodes have the same outgoing arcs */
-#define foreach_sctp_state_next \
- _ (DROP4, "ip4-drop") \
- _ (DROP6, "ip6-drop") \
- _ (SCTP4_OUTPUT, "sctp4-output") \
- _ (SCTP6_OUTPUT, "sctp6-output")
-
-typedef enum _sctp_established_phase_next
-{
-#define _(s,n) SCTP_ESTABLISHED_PHASE_NEXT_##s,
- foreach_sctp_state_next
-#undef _
- SCTP_ESTABLISHED_PHASE_N_NEXT,
-} sctp_established_phase_next_t;
-
-typedef enum _sctp_rcv_phase_next
-{
-#define _(s,n) SCTP_RCV_PHASE_NEXT_##s,
- foreach_sctp_state_next
-#undef _
- SCTP_RCV_PHASE_N_NEXT,
-} sctp_rcv_phase_next_t;
-
-typedef enum _sctp_listen_phase_next
-{
-#define _(s,n) SCTP_LISTEN_PHASE_NEXT_##s,
- foreach_sctp_state_next
-#undef _
- SCTP_LISTEN_PHASE_N_NEXT,
-} sctp_listen_phase_next_t;
-
-typedef enum _sctp_shutdown_phase_next
-{
-#define _(s,n) SCTP_SHUTDOWN_PHASE_NEXT_##s,
- foreach_sctp_state_next
-#undef _
- SCTP_SHUTDOWN_PHASE_N_NEXT,
-} sctp_shutdown_phase_next_t;
-
-/* Generic, state independent indices */
-typedef enum _sctp_state_next
-{
-#define _(s,n) SCTP_NEXT_##s,
- foreach_sctp_state_next
-#undef _
- SCTP_STATE_N_NEXT,
-} sctp_state_next_t;
-
-typedef enum _sctp_input_next
-{
- SCTP_INPUT_NEXT_DROP,
- SCTP_INPUT_NEXT_LISTEN_PHASE,
- SCTP_INPUT_NEXT_RCV_PHASE,
- SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
- SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
- SCTP_INPUT_NEXT_PUNT_PHASE,
- SCTP_INPUT_N_NEXT
-} sctp_input_next_t;
-
-#ifndef CLIB_MARCH_VARIANT
-char *
-phase_to_string (u8 phase)
-{
- switch (phase)
- {
- case SCTP_INPUT_NEXT_DROP:
- return "SCTP_INPUT_NEXT_DROP";
- case SCTP_INPUT_NEXT_LISTEN_PHASE:
- return "SCTP_INPUT_NEXT_LISTEN_PHASE";
- case SCTP_INPUT_NEXT_RCV_PHASE:
- return "SCTP_INPUT_NEXT_RCV_PHASE";
- case SCTP_INPUT_NEXT_ESTABLISHED_PHASE:
- return "SCTP_INPUT_NEXT_ESTABLISHED_PHASE";
- case SCTP_INPUT_NEXT_SHUTDOWN_PHASE:
- return "SCTP_INPUT_NEXT_SHUTDOWN_PHASE";
- case SCTP_INPUT_NEXT_PUNT_PHASE:
- return "SCTP_INPUT_NEXT_PUNT_PHASE";
- }
- return NULL;
-}
-#endif /* CLIB_MARCH_VARIANT */
-
-#define foreach_sctp4_input_next \
- _ (DROP, "error-drop") \
- _ (RCV_PHASE, "sctp4-rcv") \
- _ (LISTEN_PHASE, "sctp4-listen") \
- _ (ESTABLISHED_PHASE, "sctp4-established") \
- _ (SHUTDOWN_PHASE, "sctp4-shutdown") \
- _ (PUNT_PHASE, "ip4-punt")
-
-
-#define foreach_sctp6_input_next \
- _ (DROP, "error-drop") \
- _ (RCV_PHASE, "sctp6-rcv") \
- _ (LISTEN_PHASE, "sctp6-listen") \
- _ (ESTABLISHED_PHASE, "sctp6-established") \
- _ (SHUTDOWN_PHASE, "sctp6-shutdown") \
- _ (PUNT_PHASE, "ip6-punt")
-
-static u8
-sctp_lookup_is_valid (transport_connection_t * trans_conn,
- sctp_header_t * sctp_hdr)
-{
- sctp_connection_t *sctp_conn =
- sctp_get_connection_from_transport (trans_conn);
-
- if (!sctp_conn)
- return 1;
-
- u8 is_valid = (trans_conn->lcl_port == sctp_hdr->dst_port
- && (sctp_conn->state == SCTP_STATE_CLOSED
- || trans_conn->rmt_port == sctp_hdr->src_port));
-
- return is_valid;
-}
-
-/**
- * Lookup transport connection
- */
-static sctp_connection_t *
-sctp_lookup_connection (u32 fib_index, vlib_buffer_t * b, u8 thread_index,
- u8 is_ip4)
-{
- sctp_main_t *tm = vnet_get_sctp_main ();
- sctp_header_t *sctp_hdr;
- transport_connection_t *trans_conn;
- sctp_connection_t *sctp_conn;
- u8 is_filtered, i;
- if (is_ip4)
- {
- ip4_header_t *ip4_hdr;
- ip4_hdr = vlib_buffer_get_current (b);
- sctp_hdr = ip4_next_header (ip4_hdr);
- trans_conn = session_lookup_connection_wt4 (fib_index,
- &ip4_hdr->dst_address,
- &ip4_hdr->src_address,
- sctp_hdr->dst_port,
- sctp_hdr->src_port,
- TRANSPORT_PROTO_SCTP,
- thread_index, &is_filtered);
- if (trans_conn == 0) /* Not primary connection */
- {
- for (i = 0; i < MAX_SCTP_CONNECTIONS; i++)
- {
- if ((tm->connections[thread_index]->sub_conn[i].
- connection.lcl_ip.ip4.as_u32 ==
- ip4_hdr->dst_address.as_u32)
- && (tm->connections[thread_index]->sub_conn[i].
- connection.rmt_ip.ip4.as_u32 ==
- ip4_hdr->src_address.as_u32))
- {
- trans_conn =
- &tm->connections[thread_index]->sub_conn[i].connection;
- break;
- }
- }
- }
- ASSERT (trans_conn != 0);
- ASSERT (sctp_lookup_is_valid (trans_conn, sctp_hdr));
- }
- else
- {
- ip6_header_t *ip6_hdr;
- ip6_hdr = vlib_buffer_get_current (b);
- sctp_hdr = ip6_next_header (ip6_hdr);
- trans_conn = session_lookup_connection_wt6 (fib_index,
- &ip6_hdr->dst_address,
- &ip6_hdr->src_address,
- sctp_hdr->dst_port,
- sctp_hdr->src_port,
- TRANSPORT_PROTO_SCTP,
- thread_index, &is_filtered);
- if (trans_conn == 0) /* Not primary connection */
- {
- for (i = 0; i < MAX_SCTP_CONNECTIONS; i++)
- {
- if ((tm->connections[thread_index]->sub_conn[i].
- connection.lcl_ip.ip6.as_u64[0] ==
- ip6_hdr->dst_address.as_u64[0]
- && tm->connections[thread_index]->sub_conn[i].
- connection.lcl_ip.ip6.as_u64[1] ==
- ip6_hdr->dst_address.as_u64[1])
- && (tm->connections[thread_index]->sub_conn[i].
- connection.rmt_ip.ip6.as_u64[0] ==
- ip6_hdr->src_address.as_u64[0]
- && tm->connections[thread_index]->
- sub_conn[i].connection.rmt_ip.ip6.as_u64[1] ==
- ip6_hdr->src_address.as_u64[1]))
- {
- trans_conn =
- &tm->connections[thread_index]->sub_conn[i].connection;
- break;
- }
- }
- }
- ASSERT (trans_conn != 0);
- ASSERT (sctp_lookup_is_valid (trans_conn, sctp_hdr));
- }
- sctp_conn = sctp_get_connection_from_transport (trans_conn);
- return sctp_conn;
-}
-
-typedef struct
-{
- sctp_header_t sctp_header;
- sctp_connection_t sctp_connection;
-} sctp_rx_trace_t;
-
-#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)
-
-static void
-sctp_set_rx_trace_data (sctp_rx_trace_t * rx_trace,
- sctp_connection_t * sctp_conn,
- sctp_header_t * sctp_hdr, vlib_buffer_t * b0,
- u8 is_ip4)
-{
- if (sctp_conn)
- {
- clib_memcpy_fast (&rx_trace->sctp_connection, sctp_conn,
- sizeof (rx_trace->sctp_connection));
- }
- else
- {
- sctp_hdr = sctp_buffer_hdr (b0);
- }
- clib_memcpy_fast (&rx_trace->sctp_header, sctp_hdr,
- sizeof (rx_trace->sctp_header));
-}
-
-always_inline u16
-sctp_calculate_implied_length (ip4_header_t * ip4_hdr, ip6_header_t * ip6_hdr,
- int is_ip4)
-{
- u16 sctp_implied_packet_length = 0;
-
- if (is_ip4)
- sctp_implied_packet_length =
- clib_net_to_host_u16 (ip4_hdr->length) - ip4_header_bytes (ip4_hdr);
- else
- sctp_implied_packet_length =
- clib_net_to_host_u16 (ip6_hdr->payload_length) - sizeof (ip6_hdr);
-
- return sctp_implied_packet_length;
-}
-
-always_inline u8
-sctp_is_bundling (u16 sctp_implied_length,
- sctp_chunks_common_hdr_t * sctp_common_hdr)
-{
- if (sctp_implied_length !=
- sizeof (sctp_header_t) + vnet_sctp_get_chunk_length (sctp_common_hdr))
- return 1;
- 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,
- sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
- u16 sctp_implied_length)
-{
- sctp_init_chunk_t *init_chunk = (sctp_init_chunk_t *) (sctp_hdr);
- 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
- *
- * The logic required by the RFC4960 Section 5.2.2 is already taken care of
- * in the code below and by the "sctp_prepare_initack_chunk" function.
- * However, for debugging purposes it is nice to have a message printed out
- * for these corner-case scenarios.
- */
- if (sctp_conn->state != SCTP_STATE_CLOSED)
- { /* UNEXPECTED scenario */
- switch (sctp_conn->state)
- {
- case SCTP_STATE_COOKIE_WAIT:
- SCTP_ADV_DBG ("Received INIT chunk while in COOKIE_WAIT state");
- 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");
- 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;
- }
- }
-
- if (sctp_hdr->verification_tag != 0x0)
- return SCTP_ERROR_INVALID_TAG_FOR_INIT;
-
- /*
- * It is not possible to bundle any other CHUNK with the INIT chunk
- */
- if (sctp_is_bundling (sctp_implied_length, &init_chunk->chunk_hdr))
- return SCTP_ERROR_BUNDLING_VIOLATION;
-
- /* Save the INITIATE_TAG of the remote peer for this connection:
- * it MUST be used for the VERIFICATION_TAG parameter in the SCTP HEADER */
- sctp_conn->remote_tag = init_chunk->initiate_tag;
- sctp_conn->remote_initial_tsn =
- clib_net_to_host_u32 (init_chunk->initial_tsn);
- sctp_conn->last_rcvd_tsn = 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->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.
- */
- u16 length = vnet_sctp_get_chunk_length (sctp_chunk_hdr);
- if (length > sizeof (sctp_init_chunk_t))
- {
- /* There are optional parameters in the INIT chunk */
- u16 pointer_offset = sizeof (sctp_init_chunk_t);
- while (pointer_offset < length)
- {
- sctp_opt_params_hdr_t *opt_params_hdr =
- (sctp_opt_params_hdr_t *) init_chunk + pointer_offset;
-
- switch (clib_net_to_host_u16 (opt_params_hdr->type))
- {
- case SCTP_IPV4_ADDRESS_TYPE:
- {
- sctp_ipv4_addr_param_t *ipv4 =
- (sctp_ipv4_addr_param_t *) opt_params_hdr;
- clib_memcpy_fast (&ip4_addr, &ipv4->address,
- sizeof (ip4_address_t));
-
- 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;
- }
- case SCTP_IPV6_ADDRESS_TYPE:
- {
- sctp_ipv6_addr_param_t *ipv6 =
- (sctp_ipv6_addr_param_t *) opt_params_hdr;
- clib_memcpy_fast (&ip6_addr, &ipv6->address,
- sizeof (ip6_address_t));
-
- 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;
- }
- case SCTP_COOKIE_PRESERVATIVE_TYPE:
- {
- sctp_cookie_preservative_param_t *cookie_pres =
- (sctp_cookie_preservative_param_t *) opt_params_hdr;
- sctp_conn->peer_cookie_life_span_increment =
- cookie_pres->life_span_inc;
- break;
- }
- case SCTP_HOSTNAME_ADDRESS_TYPE:
- {
- sctp_hostname_param_t *hostname_addr =
- (sctp_hostname_param_t *) opt_params_hdr;
- clib_memcpy_fast (hostname, hostname_addr->hostname,
- FQDN_MAX_LENGTH);
- break;
- }
- case SCTP_SUPPORTED_ADDRESS_TYPES:
- {
- /* TODO */
- break;
- }
- }
- pointer_offset += clib_net_to_host_u16 (opt_params_hdr->length);
- }
- }
-
- /* Reuse buffer to make init-ack and send */
- 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_is_valid_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_init_ack_chunk_t *init_ack_chunk =
- (sctp_init_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 != init_ack_chunk->sctp_hdr.verification_tag)
- {
- return SCTP_ERROR_INVALID_TAG;
- }
-
- /*
- * It is not possible to bundle any other CHUNK with the INIT_ACK chunk
- */
- if (sctp_is_bundling (sctp_implied_length, &init_ack_chunk->chunk_hdr))
- return SCTP_ERROR_BUNDLING_VIOLATION;
-
- 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, 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);
-
- char hostname[FQDN_MAX_LENGTH];
-
- /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
- if (sctp_conn->local_tag != init_ack_chunk->sctp_hdr.verification_tag)
- {
- return SCTP_ERROR_INVALID_TAG;
- }
-
- /*
- * It is not possible to bundle any other CHUNK with the INIT chunk
- */
- 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 =
- clib_net_to_host_u32 (init_ack_chunk->initial_tsn);
- sctp_conn->last_rcvd_tsn = 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->peer_rwnd = clib_net_to_host_u32 (init_ack_chunk->a_rwnd);
-
- u16 length = vnet_sctp_get_chunk_length (sctp_chunk_hdr);
-
- if (length > sizeof (sctp_init_ack_chunk_t))
- /*
- * There are optional parameters in the INIT ACK chunk
- */
- {
- u16 pointer_offset = sizeof (sctp_init_ack_chunk_t);
-
- while (pointer_offset < length)
- {
- sctp_opt_params_hdr_t *opt_params_hdr =
- (sctp_opt_params_hdr_t *) ((char *) init_ack_chunk +
- pointer_offset);
-
- switch (clib_net_to_host_u16 (opt_params_hdr->type))
- {
- case SCTP_IPV4_ADDRESS_TYPE:
- {
- sctp_ipv4_addr_param_t *ipv4 =
- (sctp_ipv4_addr_param_t *) opt_params_hdr;
-
- sctp_sub_connection_add_ip4 (vlib_get_main (),
- &sctp_conn->sub_conn
- [SCTP_PRIMARY_PATH_IDX].connection.
- lcl_ip.ip4, &ipv4->address);
-
- break;
- }
- case SCTP_IPV6_ADDRESS_TYPE:
- {
- sctp_ipv6_addr_param_t *ipv6 =
- (sctp_ipv6_addr_param_t *) opt_params_hdr;
-
- sctp_sub_connection_add_ip6 (vlib_get_main (),
- &sctp_conn->sub_conn
- [SCTP_PRIMARY_PATH_IDX].connection.
- lcl_ip.ip6, &ipv6->address);
-
- break;
- }
- case SCTP_STATE_COOKIE_TYPE:
- {
- sctp_state_cookie_param_t *state_cookie_param =
- (sctp_state_cookie_param_t *) opt_params_hdr;
-
- 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_fast (hostname, hostname_addr->hostname,
- FQDN_MAX_LENGTH);
- break;
- }
- case SCTP_UNRECOGNIZED_TYPE:
- {
- break;
- }
- }
- u16 increment = clib_net_to_host_u16 (opt_params_hdr->length);
- /* This indicates something really bad happened */
- if (increment == 0)
- {
- return SCTP_ERROR_INVALID_TAG;
- }
- pointer_offset += increment;
- }
- }
-
- sctp_prepare_cookie_echo_chunk (sctp_conn, idx, b0, 1);
-
- /* Start the T1_COOKIE timer */
- 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,
- 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 */ ,
- 1);
-
- /* 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;
- }
-
- return error;
-}
-
-always_inline u8
-sctp_is_sack_delayable (sctp_connection_t * sctp_conn, u8 idx, u8 is_gapping)
-{
- 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 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 0;
- }
-
- return 1;
-}
-
-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, u8 idx, vlib_buffer_t * b,
- u16 * next0)
-{
- u32 error = 0, n_data_bytes;
- 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)
- {
- *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;
- vnet_buffer (b)->sctp.ssn = sctp_data_chunk->stream_seq;
-
- u32 tsn = clib_net_to_host_u32 (sctp_data_chunk->tsn);
-
- vlib_buffer_advance (b, vnet_buffer (b)->sctp.data_offset);
- u32 chunk_len = vnet_sctp_get_chunk_length (&sctp_data_chunk->chunk_hdr) -
- (sizeof (sctp_payload_data_chunk_t) - sizeof (sctp_header_t));
-
- ASSERT (vnet_buffer (b)->sctp.data_len);
- ASSERT (chunk_len);
-
- /* 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);
-
- u8 bbit = vnet_sctp_get_bbit (&sctp_data_chunk->chunk_hdr);
- u8 ebit = vnet_sctp_get_ebit (&sctp_data_chunk->chunk_hdr);
-
- 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);
-
- 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, u8 idx,
- vlib_buffer_t * b0, u16 * next0)
-{
- u64 now = sctp_time_now ();
-
- 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_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);
-
- session_stream_accept_notify (&sctp_conn->sub_conn[idx].connection);
-
- return SCTP_ERROR_NONE;
-
-}
-
-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, 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_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;
-
- *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);
-
- session_stream_accept_notify (&sctp_conn->sub_conn[idx].connection);
-
- return SCTP_ERROR_NONE;
-
-}
-
-always_inline uword
-sctp46_rcv_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame, int is_ip4)
-{
- sctp_main_t *tm = vnet_get_sctp_main ();
-
- u32 n_left_from, next_index, *from, *to_next;
- u32 my_thread_index = vm->thread_index;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- sctp_header_t *sctp_hdr = 0;
- sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
- ip4_header_t *ip4_hdr = 0;
- 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_next_drop (is_ip4);
- u8 idx;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- /* If we are in SCTP_COOKIE_WAIT_STATE then the connection
- * will come from the half-open connections pool.
- */
- sctp_conn =
- sctp_half_open_connection_get (vnet_buffer (b0)->
- sctp.connection_index);
-
- if (PREDICT_FALSE (sctp_conn == 0))
- {
- SCTP_ADV_DBG
- ("sctp_conn == NULL; return SCTP_ERROR_INVALID_CONNECTION");
- error0 = SCTP_ERROR_INVALID_CONNECTION;
- goto drop;
- }
- if (is_ip4)
- {
- 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_conn->sub_conn[idx].subconn_idx = idx;
- sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-
- sctp_chunk_hdr =
- (sctp_chunks_common_hdr_t *) (&full_hdr->common_hdr);
-
- sctp_implied_length =
- sctp_calculate_implied_length (ip4_hdr, ip6_hdr, is_ip4);
-
- u8 chunk_type = vnet_sctp_get_chunk_type (&full_hdr->common_hdr);
-
- switch (chunk_type)
- {
- case INIT_ACK:
- error0 =
- sctp_is_valid_init_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
- b0, sctp_implied_length);
-
- if (error0 == SCTP_ERROR_NONE)
- {
- pool_get (tm->connections[my_thread_index], 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].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_DBG
- ("Cannot cleanup half-open connection; not the owning thread");
- }
-
- 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, idx, b0,
- sctp_implied_length);
-
- if (session_stream_connect_notify
- (&new_sctp_conn->sub_conn[idx].connection, 0))
- {
- SCTP_DBG
- ("conn_index = %u: session_stream_connect_notify error; cleaning up connection",
- new_sctp_conn->sub_conn[idx].connection.c_index);
- sctp_connection_cleanup (new_sctp_conn);
- goto drop;
- }
- 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)
- * 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_UNKNOWN_CHUNK;
- next0 = sctp_next_drop (is_ip4);
- goto drop;
- }
-
- if (error0 != SCTP_ERROR_NONE)
- {
- clib_warning ("error while parsing chunk");
- sctp_connection_cleanup (sctp_conn);
- next0 = sctp_next_drop (is_ip4);
- goto drop;
- }
-
- drop:
- b0->error = node->errors[error0];
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- sctp_rx_trace_t *t0 =
- vlib_add_trace (vm, node, b0, sizeof (*t0));
- sctp_set_rx_trace_data (t0, sctp_conn, sctp_hdr, b0, is_ip4);
- }
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
- return from_frame->n_vectors;
-}
-
-VLIB_NODE_FN (sctp4_rcv_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_rcv_phase_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_init_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_rcv_phase_inline (vm, node, from_frame, 0 /* is_ip4 */ );
-}
-
-static u8 *
-format_sctp_rx_trace_short (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- sctp_rx_trace_t *t = va_arg (*args, sctp_rx_trace_t *);
-
- s = format (s, "%d -> %d (%U)",
- clib_net_to_host_u16 (t->sctp_header.src_port),
- clib_net_to_host_u16 (t->sctp_header.dst_port),
- format_sctp_state, t->sctp_connection.state);
-
- return s;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_rcv_phase_node) =
-{
- .name = "sctp4-rcv",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_RCV_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_RCV_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_init_phase_node) =
-{
- .name = "sctp6-rcv",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_RCV_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_RCV_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-always_inline u16
-sctp_handle_shutdown (sctp_header_t * sctp_hdr,
- sctp_chunks_common_hdr_t * sctp_chunk_hdr,
- 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;
- }
-
- /*
- * It is not possible to bundle any other CHUNK with the SHUTDOWN chunk
- */
- if (sctp_is_bundling (sctp_implied_length, &shutdown_chunk->chunk_hdr))
- return SCTP_ERROR_BUNDLING_VIOLATION;
-
- switch (sctp_conn->state)
- {
- 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, 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, 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;
- }
-
- /*
- * It is not possible to bundle any other CHUNK with the SHUTDOWN chunk
- */
- if (sctp_is_bundling (sctp_implied_length, &shutdown_ack_chunk->chunk_hdr))
- return SCTP_ERROR_BUNDLING_VIOLATION;
-
- /* Whether we are in SCTP_STATE_SHUTDOWN_SENT or SCTP_STATE_SHUTDOWN_ACK_SENT
- * the reception of a SHUTDOWN_ACK chunk leads to the same actions:
- * - STOP T2_SHUTDOWN timer
- * - SEND SHUTDOWN_COMPLETE chunk
- */
- 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, 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;
- }
-
- /*
- * It is not possible to bundle any other CHUNK with the SHUTDOWN chunk
- */
- if (sctp_is_bundling (sctp_implied_length, &shutdown_complete->chunk_hdr))
- return SCTP_ERROR_BUNDLING_VIOLATION;
-
- 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;
-
- *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-
- return SCTP_ERROR_NONE;
-}
-
-always_inline uword
-sctp46_shutdown_phase_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame, int is_ip4)
-{
- u32 n_left_from, next_index, *from, *to_next;
- u32 my_thread_index = vm->thread_index;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- sctp_rx_trace_t *sctp_trace;
- sctp_header_t *sctp_hdr = 0;
- sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
- ip4_header_t *ip4_hdr = 0;
- ip6_header_t *ip6_hdr = 0;
- 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;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- sctp_conn =
- sctp_connection_get (vnet_buffer (b0)->sctp.connection_index,
- my_thread_index);
-
- if (PREDICT_FALSE (sctp_conn == 0))
- {
- SCTP_DBG
- ("sctp_conn == NULL; return SCTP_ERROR_INVALID_CONNECTION");
- error0 = SCTP_ERROR_INVALID_CONNECTION;
- goto drop;
- }
-
- if (is_ip4)
- {
- 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_chunk_hdr = &full_hdr->common_hdr;
-
- sctp_implied_length =
- sctp_calculate_implied_length (ip4_hdr, ip6_hdr, is_ip4);
-
- 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,
- idx, b0, sctp_implied_length, &next0);
- break;
-
- case SHUTDOWN_ACK:
- error0 =
- sctp_handle_shutdown_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
- idx, b0, sctp_implied_length,
- &next0);
- break;
-
- case SHUTDOWN_COMPLETE:
- error0 =
- sctp_handle_shutdown_complete (sctp_hdr, sctp_chunk_hdr,
- sctp_conn, idx, b0,
- sctp_implied_length, &next0);
-
- sctp_connection_cleanup (sctp_conn);
- break;
-
- /*
- * DATA chunks can still be transmitted/received in the SHUTDOWN-PENDING
- * and SHUTDOWN-SENT states (as per RFC4960 Section 6)
- */
- case DATA:
- error0 =
- sctp_handle_data ((sctp_payload_data_chunk_t *) sctp_hdr,
- 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_UNKNOWN_CHUNK;
- next0 = sctp_next_drop (is_ip4);
- goto drop;
- }
-
- if (error0 != SCTP_ERROR_NONE)
- {
- clib_warning ("error while parsing chunk");
- sctp_connection_cleanup (sctp_conn);
- next0 = sctp_next_drop (is_ip4);
- goto drop;
- }
-
- drop:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- sctp_trace =
- vlib_add_trace (vm, node, b0, sizeof (*sctp_trace));
-
- 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];
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- return from_frame->n_vectors;
-
-}
-
-VLIB_NODE_FN (sctp4_shutdown_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_shutdown_phase_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_shutdown_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_shutdown_phase_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_shutdown_phase_node) =
-{
- .name = "sctp4-shutdown",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_SHUTDOWN_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_SHUTDOWN_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_shutdown_phase_node) =
-{
- .name = "sctp6-shutdown",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_SHUTDOWN_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_SHUTDOWN_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-always_inline u16
-sctp_handle_sack (sctp_selective_ack_chunk_t * sack_chunk,
- 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_conn->sub_conn[idx].state = SCTP_SUBCONN_SACK_RECEIVED;
-
- 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, 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, 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 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, sctp4_node, evt, val);
- else
- vlib_node_increment_counter (vm, sctp6_node, evt, val);
-}
-
-always_inline uword
-sctp46_listen_process_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame, int is_ip4)
-{
- u32 n_left_from, next_index, *from, *to_next;
- u32 my_thread_index = vm->thread_index;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- sctp_header_t *sctp_hdr = 0;
- ip4_header_t *ip4_hdr;
- ip6_header_t *ip6_hdr;
- sctp_connection_t *child_conn;
- sctp_connection_t *sctp_listener;
- u16 next0 = sctp_next_drop (is_ip4), error0 = SCTP_ERROR_ENQUEUED;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- sctp_listener =
- sctp_listener_get (vnet_buffer (b0)->sctp.connection_index);
-
- if (is_ip4)
- {
- ip4_hdr = vlib_buffer_get_current (b0);
- sctp_hdr = ip4_next_header (ip4_hdr);
- }
- else
- {
- ip6_hdr = vlib_buffer_get_current (b0);
- sctp_hdr = ip6_next_header (ip6_hdr);
- }
-
- child_conn =
- sctp_lookup_connection (sctp_listener->sub_conn
- [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[SCTP_PRIMARY_PATH_IDX].
- connection.c_index,
- sctp_state_to_string (child_conn->state));
- error0 = SCTP_ERROR_CREATE_EXISTS;
- goto drop;
- }
-
- /* Create child session and send SYN-ACK */
- child_conn = sctp_connection_new (my_thread_index);
- 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[SCTP_PRIMARY_PATH_IDX].c_rmt_port =
- sctp_hdr->src_port;
- 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[SCTP_PRIMARY_PATH_IDX].c_lcl_ip4.as_u32 =
- ip4_hdr->dst_address.as_u32;
- child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_rmt_ip4.as_u32 =
- ip4_hdr->src_address.as_u32;
- }
- else
- {
- 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 && chunk_type != DATA
- && chunk_type != OPERATION_ERROR)
- {
- SCTP_DBG
- ("conn_index = %u: chunk_type != INIT... chunk_type=%s",
- child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
- connection.c_index, sctp_chunk_to_string (chunk_type));
-
- error0 = SCTP_ERROR_UNKNOWN_CHUNK;
- next0 = sctp_next_drop (is_ip4);
- goto drop;
- }
-
- u16 sctp_implied_length =
- sctp_calculate_implied_length (ip4_hdr, ip6_hdr, is_ip4);
-
- switch (chunk_type)
- {
- case INIT:
- sctp_connection_timers_init (child_conn);
-
- 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);
-
- if (error0 == SCTP_ERROR_NONE)
- {
- if (session_stream_accept
- (&child_conn->
- sub_conn[SCTP_PRIMARY_PATH_IDX].connection,
- sctp_listener->
- sub_conn[SCTP_PRIMARY_PATH_IDX].c_s_index,
- sctp_listener->
- sub_conn[SCTP_PRIMARY_PATH_IDX].c_thread_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);
- }
- break;
-
- /* Reception of a DATA chunk whilst in the CLOSED state is called
- * "Out of the Blue" packet and handling of the chunk needs special treatment
- * as per RFC4960 section 8.4
- */
- case DATA:
- break;
-
- case OPERATION_ERROR:
- error0 =
- sctp_handle_operation_err (sctp_hdr, child_conn,
- SCTP_PRIMARY_PATH_IDX, b0, &next0);
- break;
- }
-
- drop:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- sctp_rx_trace_t *t0 =
- vlib_add_trace (vm, node, b0, sizeof (*t0));
- 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];
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-
- }
- return from_frame->n_vectors;
-}
-
-VLIB_NODE_FN (sctp4_listen_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_listen_process_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_listen_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_listen_process_inline (vm, node, from_frame, 0 /* is_ip4 */ );
-}
-
-always_inline uword
-sctp46_established_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame, int is_ip4)
-{
- sctp_main_t *sm = vnet_get_sctp_main ();
- u32 n_left_from, next_index, *from, *to_next;
- u32 my_thread_index = vm->thread_index, errors = 0;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- sctp_header_t *sctp_hdr = 0;
- sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
- ip4_header_t *ip4_hdr = 0;
- ip6_header_t *ip6_hdr = 0;
- sctp_connection_t *sctp_conn;
- u16 error0 = SCTP_ERROR_ENQUEUED, next0 =
- SCTP_ESTABLISHED_PHASE_N_NEXT;
- u8 idx;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- sctp_conn =
- sctp_connection_get (vnet_buffer (b0)->sctp.connection_index,
- my_thread_index);
-
- if (PREDICT_FALSE (sctp_conn == 0))
- {
- SCTP_DBG
- ("sctp_conn == NULL; return SCTP_ERROR_INVALID_CONNECTION");
- error0 = SCTP_ERROR_INVALID_CONNECTION;
- goto done;
- }
- if (is_ip4)
- {
- 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_conn->sub_conn[idx].subconn_idx = idx;
-
- sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
- sctp_chunk_hdr =
- (sctp_chunks_common_hdr_t *) (&full_hdr->common_hdr);
-
- u8 chunk_type = vnet_sctp_get_chunk_type (&full_hdr->common_hdr);
-
- switch (chunk_type)
- {
- case COOKIE_ECHO:
- error0 =
- sctp_handle_cookie_echo (sctp_hdr, sctp_chunk_hdr, sctp_conn,
- idx, b0, &next0);
- break;
-
- case COOKIE_ACK:
- error0 =
- sctp_handle_cookie_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
- idx, b0, &next0);
- break;
-
- case SACK:
- error0 =
- sctp_handle_sack ((sctp_selective_ack_chunk_t *) sctp_hdr,
- sctp_conn, idx, b0, &next0);
- break;
-
- case HEARTBEAT:
- error0 =
- sctp_handle_heartbeat ((sctp_hb_req_chunk_t *) sctp_hdr,
- sctp_conn, idx, b0, &next0);
- break;
-
- case HEARTBEAT_ACK:
- error0 =
- sctp_handle_heartbeat_ack ((sctp_hb_ack_chunk_t *) sctp_hdr,
- sctp_conn, idx, b0, &next0);
- break;
-
- case DATA:
- error0 =
- sctp_handle_data ((sctp_payload_data_chunk_t *) sctp_hdr,
- 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)
- * 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_UNKNOWN_CHUNK;
- next0 = sctp_next_drop (is_ip4);
- goto done;
- }
-
- done:
- b0->error = node->errors[error0];
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- sctp_rx_trace_t *t0 =
- vlib_add_trace (vm, node, b0, sizeof (*t0));
- sctp_set_rx_trace_data (t0, sctp_conn, sctp_hdr, b0, is_ip4);
- }
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- errors = session_main_flush_enqueue_events (TRANSPORT_PROTO_SCTP,
- my_thread_index);
-
- sctp_node_inc_counter (vm, is_ip4, sm->sctp4_established_phase_node_index,
- sm->sctp6_established_phase_node_index,
- SCTP_ERROR_EVENT_FIFO_FULL, errors);
- sctp_flush_frame_to_output (vm, my_thread_index, is_ip4);
-
- return from_frame->n_vectors;
-}
-
-VLIB_NODE_FN (sctp4_established_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_established_phase_inline (vm, node, from_frame,
- 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_established_phase_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_established_phase_inline (vm, node, from_frame,
- 0 /* is_ip4 */ );
-}
-
-static u8 *
-format_sctp_rx_trace (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- sctp_rx_trace_t *t = va_arg (*args, sctp_rx_trace_t *);
- u32 indent = format_get_indent (s);
-
- s = format (s, "%U\n%U%U",
- format_sctp_header, &t->sctp_header, 128,
- format_white_space, indent,
- format_sctp_connection, &t->sctp_connection, 1);
-
- return s;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_listen_phase_node) =
-{
- .name = "sctp4-listen",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_LISTEN_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_LISTEN_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_listen_phase_node) =
-{
- .name = "sctp6-listen",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_LISTEN_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_LISTEN_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_established_phase_node) =
-{
- .name = "sctp4-established",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_ESTABLISHED_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_ESTABLISHED_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_established_phase_node) =
-{
- .name = "sctp6-established",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_LISTEN_PHASE_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_LISTEN_PHASE_NEXT_##s] = n,
- foreach_sctp_state_next
-#undef _
- },
- .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/*
- * This is the function executed first for the SCTP graph.
- * It takes care of doing the initial message parsing and
- * dispatch to the specialized function.
- */
-always_inline uword
-sctp46_input_dispatcher (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame, int is_ip4)
-{
- u32 n_left_from, next_index, *from, *to_next;
- u32 my_thread_index = vm->thread_index;
- u8 result;
- sctp_main_t *tm = vnet_get_sctp_main ();
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
- next_index = node->cached_next_index;
- sctp_set_time_now (my_thread_index);
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- int n_advance_bytes0, n_data_bytes0;
- u32 bi0, fib_index0;
- vlib_buffer_t *b0;
- sctp_header_t *sctp_hdr = 0;
- sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
- sctp_connection_t *sctp_conn;
- transport_connection_t *trans_conn;
- ip4_header_t *ip4_hdr;
- ip6_header_t *ip6_hdr;
- u32 error0 = SCTP_ERROR_NO_LISTENER, next0 = SCTP_INPUT_NEXT_DROP;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- vnet_buffer (b0)->sctp.flags = 0;
- fib_index0 = vnet_buffer (b0)->ip.fib_index;
-
- /* Checksum computed by ipx_local no need to compute again */
-
- if (is_ip4)
- {
- ip4_hdr = vlib_buffer_get_current (b0);
- sctp_hdr = ip4_next_header (ip4_hdr);
-
- sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
- sctp_chunk_hdr = &full_hdr->common_hdr;
-
- n_advance_bytes0 =
- (ip4_header_bytes (ip4_hdr) +
- sizeof (sctp_payload_data_chunk_t));
- n_data_bytes0 =
- clib_net_to_host_u16 (ip4_hdr->length) - n_advance_bytes0;
-
- trans_conn = session_lookup_connection_wt4 (fib_index0,
- &ip4_hdr->dst_address,
- &ip4_hdr->src_address,
- sctp_hdr->dst_port,
- sctp_hdr->src_port,
- TRANSPORT_PROTO_SCTP,
- my_thread_index,
- &result);
- }
- else
- {
- ip6_hdr = vlib_buffer_get_current (b0);
- sctp_hdr = ip6_next_header (ip6_hdr);
-
- sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
- sctp_chunk_hdr = &full_hdr->common_hdr;
-
- n_advance_bytes0 = sctp_header_bytes ();
- n_data_bytes0 =
- clib_net_to_host_u16 (ip6_hdr->payload_length) -
- n_advance_bytes0;
- n_advance_bytes0 += sizeof (ip6_hdr[0]);
-
- trans_conn = session_lookup_connection_wt6 (fib_index0,
- &ip6_hdr->dst_address,
- &ip6_hdr->src_address,
- sctp_hdr->dst_port,
- sctp_hdr->src_port,
- TRANSPORT_PROTO_SCTP,
- my_thread_index,
- &result);
- }
-
- /* Length check */
- if (PREDICT_FALSE (n_advance_bytes0 < 0))
- {
- error0 = SCTP_ERROR_LENGTH;
- goto done;
- }
-
- sctp_conn = sctp_get_connection_from_transport (trans_conn);
- vnet_sctp_common_hdr_params_net_to_host (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;
- }
-
- vnet_buffer (b0)->sctp.hdr_offset =
- (u8 *) sctp_hdr - (u8 *) vlib_buffer_get_current (b0);
-
- /* Session exists */
- if (PREDICT_TRUE (0 != sctp_conn))
- {
- /* Save connection index */
- vnet_buffer (b0)->sctp.connection_index = trans_conn->c_index;
- 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][chunk_type].next;
- error0 = tm->dispatch_table[sctp_conn->state][chunk_type].error;
-
- 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);
-
- }
- else
- {
- if (result)
- {
- next0 = SCTP_INPUT_NEXT_DROP;
- error0 = SCTP_ERROR_NONE + result;
- }
- else if ((is_ip4 && tm->punt_unknown4) ||
- (!is_ip4 && tm->punt_unknown6))
- {
- next0 = SCTP_INPUT_NEXT_PUNT_PHASE;
- error0 = SCTP_ERROR_PUNT;
- }
- else
- {
- next0 = SCTP_INPUT_NEXT_DROP;
- error0 = SCTP_ERROR_NO_LISTENER;
- }
- SCTP_DBG_STATE_MACHINE ("sctp_conn == NULL, NEXT_PHASE = %s",
- phase_to_string (next0));
- sctp_conn = 0;
- }
-
- done:
- b0->error = error0 ? node->errors[error0] : 0;
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- sctp_rx_trace_t *t0 =
- vlib_add_trace (vm, node, b0, sizeof (*t0));
- sctp_set_rx_trace_data (t0, sctp_conn, sctp_hdr, b0, is_ip4);
- }
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
- return from_frame->n_vectors;
-}
-
-VLIB_NODE_FN (sctp4_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_input_dispatcher (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return sctp46_input_dispatcher (vm, node, from_frame, 0 /* is_ip4 */ );
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_input_node) =
-{
- .name = "sctp4-input",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_INPUT_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_INPUT_NEXT_##s] = n,
- foreach_sctp4_input_next
-#undef _
- },
- .format_buffer = format_sctp_header,
- .format_trace = format_sctp_rx_trace,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_input_node) =
-{
- .name = "sctp6-input",
- /* Takes a vector of packets. */
- .vector_size = sizeof (u32),
- .n_errors = SCTP_N_ERROR,
- .error_strings = sctp_error_strings,
- .n_next_nodes = SCTP_INPUT_N_NEXT,
- .next_nodes =
- {
-#define _(s,n) [SCTP_INPUT_NEXT_##s] = n,
- foreach_sctp6_input_next
-#undef _
- },
- .format_buffer = format_sctp_header,
- .format_trace = format_sctp_rx_trace,
-};
-/* *INDENT-ON* */
-
-#ifndef CLIB_MARCH_VARIANT
-static void
-sctp_dispatch_table_init (sctp_main_t * tm)
-{
- int i, j;
- for (i = 0; i < ARRAY_LEN (tm->dispatch_table); i++)
- for (j = 0; j < ARRAY_LEN (tm->dispatch_table[i]); j++)
- {
- tm->dispatch_table[i][j].next = SCTP_INPUT_NEXT_DROP;
- tm->dispatch_table[i][j].error = SCTP_ERROR_DISPATCH;
- }
-
-#define _(t,f,n,e) \
-do { \
- tm->dispatch_table[SCTP_STATE_##t][f].next = (n); \
- tm->dispatch_table[SCTP_STATE_##t][f].error = (e); \
-} while (0)
-
- /*
- * SCTP STATE-MACHINE states:
- *
- * _(CLOSED, "CLOSED") \
- * _(COOKIE_WAIT, "COOKIE_WAIT") \
- * _(COOKIE_ECHOED, "COOKIE_ECHOED") \
- * _(ESTABLISHED, "ESTABLISHED") \
- * _(SHUTDOWN_PENDING, "SHUTDOWN_PENDING") \
- * _(SHUTDOWN_SENT, "SHUTDOWN_SENT") \
- * _(SHUTDOWN_RECEIVED, "SHUTDOWN_RECEIVED") \
- * _(SHUTDOWN_ACK_SENT, "SHUTDOWN_ACK_SENT")
- */
- //_(CLOSED, DATA, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE); /* UNEXPECTED DATA chunk which requires special handling */
- _(CLOSED, INIT, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE);
- _(CLOSED, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED INIT_ACK chunk */
- _(CLOSED, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION); /* UNEXPECTED SACK chunk */
- _(CLOSED, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT chunk */
- _(CLOSED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT_ACK chunk */
- _(CLOSED, ABORT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);
- _(CLOSED, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN chunk */
- _(CLOSED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN_ACK chunk */
- _(CLOSED, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION); /* UNEXPECTED OPERATION_ERROR chunk */
- _(CLOSED, COOKIE_ECHO, SCTP_INPUT_NEXT_ESTABLISHED_PHASE, SCTP_ERROR_NONE);
- _(CLOSED, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED COOKIE_ACK chunk */
- _(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); /* 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, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT chunk */
- _(COOKIE_WAIT, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT_ACK chunk */
- _(COOKIE_WAIT, ABORT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);
- _(COOKIE_WAIT, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN chunk */
- _(COOKIE_WAIT, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN_ACK chunk */
- _(COOKIE_WAIT, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION); /* UNEXPECTED OPERATION_ERROR chunk */
- _(COOKIE_WAIT, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION); /* UNEXPECTED COOKIE_ECHO chunk */
- _(COOKIE_WAIT, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED COOKIE_ACK 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, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED INIT_ACK chunk */
- _(COOKIE_ECHOED, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION); /* UNEXPECTED SACK chunk */
- _(COOKIE_ECHOED, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT chunk */
- _(COOKIE_ECHOED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT_ACK chunk */
- _(COOKIE_ECHOED, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION); /* UNEXPECTED ABORT chunk */
- _(COOKIE_ECHOED, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN chunk */
- _(COOKIE_ECHOED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN_ACK chunk */
- _(COOKIE_ECHOED, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION); /* UNEXPECTED OPERATION_ERROR chunk */
- _(COOKIE_ECHOED, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION); /* UNEXPECTED COOKIE_ECHO chunk */
- _(COOKIE_ECHOED, COOKIE_ACK, SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
- SCTP_ERROR_NONE);
- _(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, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED INIT_ACK chunk */
- _(ESTABLISHED, SACK, SCTP_INPUT_NEXT_ESTABLISHED_PHASE, SCTP_ERROR_NONE);
- _(ESTABLISHED, HEARTBEAT, SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
- SCTP_ERROR_NONE);
- _(ESTABLISHED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
- SCTP_ERROR_NONE);
- _(ESTABLISHED, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION); /* UNEXPECTED ABORT chunk */
- _(ESTABLISHED, SHUTDOWN, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
- _(ESTABLISHED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION); /* UNEXPECTED SHUTDOWN_ACK chunk */
- _(ESTABLISHED, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION); /* UNEXPECTED OPERATION_ERROR chunk */
- _(ESTABLISHED, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION); /* UNEXPECTED COOKIE_ECHO chunk */
- _(ESTABLISHED, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED COOKIE_ACK 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 */
- _(SHUTDOWN_PENDING, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED INIT_ACK chunk */
- _(SHUTDOWN_PENDING, SACK, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE);
- _(SHUTDOWN_PENDING, HEARTBEAT, SCTP_INPUT_NEXT_LISTEN_PHASE,
- SCTP_ERROR_NONE);
- _(SHUTDOWN_PENDING, HEARTBEAT_ACK, SCTP_INPUT_NEXT_LISTEN_PHASE,
- SCTP_ERROR_NONE);
- _(SHUTDOWN_PENDING, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION); /* UNEXPECTED ABORT chunk */
- _(SHUTDOWN_PENDING, SHUTDOWN, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
- 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_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, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED INIT_ACK chunk */
- _(SHUTDOWN_SENT, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION); /* UNEXPECTED SACK chunk */
- _(SHUTDOWN_SENT, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT chunk */
- _(SHUTDOWN_SENT, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT_ACK chunk */
- _(SHUTDOWN_SENT, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION); /* UNEXPECTED ABORT 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_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, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP); /* UNEXPECTED INIT_ACK chunk */
- _(SHUTDOWN_RECEIVED, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION); /* UNEXPECTED INIT chunk */
- _(SHUTDOWN_RECEIVED, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT chunk */
- _(SHUTDOWN_RECEIVED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT_ACK chunk */
- _(SHUTDOWN_RECEIVED, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION); /* UNEXPECTED ABORT 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_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_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, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION); /* UNEXPECTED HEARTBEAT_ACK 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_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 */
-
-#undef _
-}
-
-clib_error_t *
-sctp_input_init (vlib_main_t * vm)
-{
- clib_error_t *error = 0;
- sctp_main_t *tm = vnet_get_sctp_main ();
-
- if ((error = vlib_call_init_function (vm, sctp_init)))
- return error;
-
- /* Initialize dispatch table. */
- sctp_dispatch_table_init (tm);
-
- return error;
-}
-
-VLIB_INIT_FUNCTION (sctp_input_init);
-#endif /* CLIB_MARCH_VARIANT */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff