diff options
Diffstat (limited to 'src/plugins/sctp/sctp_input.c')
| -rw-r--r-- | src/plugins/sctp/sctp_input.c | 2532 |
1 files changed, 0 insertions, 2532 deletions
diff --git a/src/plugins/sctp/sctp_input.c b/src/plugins/sctp/sctp_input.c deleted file mode 100644 index 7f52a2f9c32..00000000000 --- a/src/plugins/sctp/sctp_input.c +++ /dev/null @@ -1,2532 +0,0 @@ -/* - * 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 <sctp/sctp.h> -#include <sctp/sctp_packet.h> -#include <sctp/sctp_debug.h> -#include <vnet/session/session.h> -#include <math.h> - -static char *sctp_error_strings[] = { -#define sctp_error(n,s) s, -#include <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; - } - - sctp_buffer_opaque (b)->sctp.sid = sctp_data_chunk->stream_id; - sctp_buffer_opaque (b)->sctp.ssn = sctp_data_chunk->stream_seq; - - u32 tsn = clib_net_to_host_u32 (sctp_data_chunk->tsn); - - vlib_buffer_advance (b, sctp_buffer_opaque (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 (sctp_buffer_opaque (b)->sctp.data_len); - ASSERT (chunk_len); - - /* Padding was added: see RFC 4096 section 3.3.1 */ - if (sctp_buffer_opaque (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. - */ - sctp_buffer_opaque (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 = sctp_buffer_opaque (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 (sctp_buffer_opaque (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 (sctp_buffer_opaque (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 (sctp_buffer_opaque (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 (sctp_buffer_opaque (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); - sctp_buffer_opaque (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; - } - - sctp_buffer_opaque (b0)->sctp.hdr_offset = - (u8 *) sctp_hdr - (u8 *) vlib_buffer_get_current (b0); - - /* Session exists */ - if (PREDICT_TRUE (0 != sctp_conn)) - { - /* Save connection index */ - sctp_buffer_opaque (b0)->sctp.connection_index - = trans_conn->c_index; - sctp_buffer_opaque (b0)->sctp.data_offset = n_advance_bytes0; - sctp_buffer_opaque (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: - */ |