diff options
Diffstat (limited to 'src/plugins/sctp/sctp_output_node.c')
| -rw-r--r-- | src/plugins/sctp/sctp_output_node.c | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/src/plugins/sctp/sctp_output_node.c b/src/plugins/sctp/sctp_output_node.c deleted file mode 100644 index 7bf2e896acc..00000000000 --- a/src/plugins/sctp/sctp_output_node.c +++ /dev/null @@ -1,397 +0,0 @@ -/* - * Copyright (c) 2018 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 <sctp/sctp.h> -#include <sctp/sctp_debug.h> -#include <vppinfra/random.h> -#include <openssl/hmac.h> - -u32 -ip6_sctp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, - ip6_header_t * ip0, int *bogus_lengthp); - -u32 -ip4_sctp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, - ip4_header_t * ip0); - -#define foreach_sctp4_output_next \ - _ (DROP, "error-drop") \ - _ (IP_LOOKUP, "ip4-lookup") - -#define foreach_sctp6_output_next \ - _ (DROP, "error-drop") \ - _ (IP_LOOKUP, "ip6-lookup") - -static char *sctp_error_strings[] = { -#define sctp_error(n,s) s, -#include <sctp/sctp_error.def> -#undef sctp_error -}; - -typedef enum _sctp_output_next -{ - SCTP_OUTPUT_NEXT_DROP, - SCTP_OUTPUT_NEXT_IP_LOOKUP, - SCTP_OUTPUT_N_NEXT -} sctp_output_next_t; - -typedef struct -{ - sctp_header_t sctp_header; - sctp_connection_t sctp_connection; -} sctp_tx_trace_t; - -always_inline u8 -sctp_is_retransmitting (sctp_connection_t * sctp_conn, u8 idx) -{ - return sctp_conn->sub_conn[idx].is_retransmitting; -} - -always_inline uword -sctp46_output_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; - 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) - { - u32 bi0; - vlib_buffer_t *b0; - sctp_header_t *sctp_hdr = 0; - sctp_connection_t *sctp_conn; - sctp_tx_trace_t *t0; - sctp_header_t *th0 = 0; - u32 error0 = SCTP_ERROR_PKTS_SENT, next0 = - SCTP_OUTPUT_NEXT_IP_LOOKUP; - -#if SCTP_DEBUG_STATE_MACHINE - u16 packet_length = 0; -#endif - - 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)) - { - error0 = SCTP_ERROR_INVALID_CONNECTION; - next0 = SCTP_OUTPUT_NEXT_DROP; - goto done; - } - - u8 idx = sctp_buffer_opaque (b0)->sctp.subconn_idx; - - th0 = vlib_buffer_get_current (b0); - - if (is_ip4) - { - ip4_header_t *iph4 = vlib_buffer_push_ip4 (vm, - b0, - &sctp_conn->sub_conn - [idx].connection. - lcl_ip.ip4, - &sctp_conn-> - sub_conn - [idx].connection. - rmt_ip.ip4, - IP_PROTOCOL_SCTP, 1); - - u32 checksum = ip4_sctp_compute_checksum (vm, b0, iph4); - - sctp_hdr = ip4_next_header (iph4); - sctp_hdr->checksum = checksum; - - vnet_buffer (b0)->l4_hdr_offset = (u8 *) th0 - b0->data; - -#if SCTP_DEBUG_STATE_MACHINE - packet_length = clib_net_to_host_u16 (iph4->length); -#endif - } - else - { - ip6_header_t *iph6 = vlib_buffer_push_ip6 (vm, - b0, - &sctp_conn->sub_conn - [idx]. - connection.lcl_ip. - ip6, - &sctp_conn->sub_conn - [idx]. - connection.rmt_ip. - ip6, - IP_PROTOCOL_SCTP); - - int bogus = ~0; - u32 checksum = ip6_sctp_compute_checksum (vm, b0, iph6, &bogus); - ASSERT (!bogus); - - sctp_hdr = ip6_next_header (iph6); - sctp_hdr->checksum = checksum; - - vnet_buffer (b0)->l3_hdr_offset = (u8 *) iph6 - b0->data; - vnet_buffer (b0)->l4_hdr_offset = (u8 *) th0 - b0->data; - -#if SCTP_DEBUG_STATE_MACHINE - packet_length = clib_net_to_host_u16 (iph6->payload_length); -#endif - } - - sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr; - u8 chunk_type = vnet_sctp_get_chunk_type (&full_hdr->common_hdr); - if (chunk_type >= UNKNOWN) - { - clib_warning - ("Trying to send an unrecognized chunk... something is really bad."); - error0 = SCTP_ERROR_UNKNOWN_CHUNK; - next0 = SCTP_OUTPUT_NEXT_DROP; - goto done; - } - -#if SCTP_DEBUG_STATE_MACHINE - u8 is_valid = - (sctp_conn->sub_conn[idx].connection.lcl_port == - sctp_hdr->src_port - || sctp_conn->sub_conn[idx].connection.lcl_port == - sctp_hdr->dst_port) - && (sctp_conn->sub_conn[idx].connection.rmt_port == - sctp_hdr->dst_port - || sctp_conn->sub_conn[idx].connection.rmt_port == - sctp_hdr->src_port); - - if (!is_valid) - { - SCTP_DBG_STATE_MACHINE ("BUFFER IS INCORRECT: conn_index = %u, " - "packet_length = %u, " - "chunk_type = %u [%s], " - "connection.lcl_port = %u, sctp_hdr->src_port = %u, " - "connection.rmt_port = %u, sctp_hdr->dst_port = %u", - sctp_conn->sub_conn[idx]. - connection.c_index, packet_length, - chunk_type, - sctp_chunk_to_string (chunk_type), - sctp_conn->sub_conn[idx]. - connection.lcl_port, sctp_hdr->src_port, - sctp_conn->sub_conn[idx]. - connection.rmt_port, - sctp_hdr->dst_port); - - error0 = SCTP_ERROR_UNKNOWN_CHUNK; - next0 = SCTP_OUTPUT_NEXT_DROP; - goto done; - } -#endif - SCTP_DBG_STATE_MACHINE - ("SESSION_INDEX = %u, CONN_INDEX = %u, CURR_CONN_STATE = %u (%s), " - "CHUNK_TYPE = %s, " "SRC_PORT = %u, DST_PORT = %u", - sctp_conn->sub_conn[idx].connection.s_index, - sctp_conn->sub_conn[idx].connection.c_index, - sctp_conn->state, sctp_state_to_string (sctp_conn->state), - sctp_chunk_to_string (chunk_type), full_hdr->hdr.src_port, - full_hdr->hdr.dst_port); - - /* Let's make sure the state-machine does not send anything crazy */ -#if SCTP_DEBUG_STATE_MACHINE - if (sctp_validate_output_state_machine (sctp_conn, chunk_type) != 0) - { - SCTP_DBG_STATE_MACHINE - ("Sending the wrong chunk (%s) based on state-machine status (%s)", - sctp_chunk_to_string (chunk_type), - sctp_state_to_string (sctp_conn->state)); - - error0 = SCTP_ERROR_UNKNOWN_CHUNK; - next0 = SCTP_OUTPUT_NEXT_DROP; - goto done; - - } -#endif - - /* Karn's algorithm: RTT measurements MUST NOT be made using - * packets that were retransmitted - */ - if (!sctp_is_retransmitting (sctp_conn, idx)) - { - /* Measure RTT with this */ - if (chunk_type == DATA - && sctp_conn->sub_conn[idx].RTO_pending == 0) - { - sctp_conn->sub_conn[idx].RTO_pending = 1; - sctp_conn->sub_conn[idx].rtt_ts = sctp_time_now (); - } - else - sctp_conn->sub_conn[idx].rtt_ts = sctp_time_now (); - } - - /* Let's take care of TIMERS */ - switch (chunk_type) - { - case COOKIE_ECHO: - { - sctp_conn->state = SCTP_STATE_COOKIE_ECHOED; - break; - } - case DATA: - { - SCTP_ADV_DBG_OUTPUT ("PACKET_LENGTH = %u", packet_length); - - sctp_timer_update (sctp_conn, idx, SCTP_TIMER_T3_RXTX, - sctp_conn->sub_conn[idx].RTO); - break; - } - case SHUTDOWN: - { - /* Start the SCTP_TIMER_T2_SHUTDOWN timer */ - sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T2_SHUTDOWN, - sctp_conn->sub_conn[idx].RTO); - sctp_conn->state = SCTP_STATE_SHUTDOWN_SENT; - break; - } - case SHUTDOWN_ACK: - { - /* Start the SCTP_TIMER_T2_SHUTDOWN timer */ - sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T2_SHUTDOWN, - sctp_conn->sub_conn[idx].RTO); - sctp_conn->state = SCTP_STATE_SHUTDOWN_ACK_SENT; - break; - } - case SHUTDOWN_COMPLETE: - { - sctp_conn->state = SCTP_STATE_CLOSED; - break; - } - } - - vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = - sctp_conn->sub_conn[idx].c_fib_index; - - b0->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED; - - SCTP_DBG_STATE_MACHINE - ("SESSION_INDEX = %u, CONNECTION_INDEX = %u, " "NEW_STATE = %s, " - "CHUNK_SENT = %s", sctp_conn->sub_conn[idx].connection.s_index, - sctp_conn->sub_conn[idx].connection.c_index, - sctp_state_to_string (sctp_conn->state), - sctp_chunk_to_string (chunk_type)); - - vnet_sctp_common_hdr_params_host_to_net (&full_hdr->common_hdr); - - done: - b0->error = node->errors[error0]; - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - t0 = vlib_add_trace (vm, node, b0, sizeof (*t0)); - if (th0) - { - clib_memcpy_fast (&t0->sctp_header, th0, - sizeof (t0->sctp_header)); - } - else - { - clib_memset (&t0->sctp_header, 0, sizeof (t0->sctp_header)); - } - clib_memcpy_fast (&t0->sctp_connection, sctp_conn, - sizeof (t0->sctp_connection)); - } - - 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_output_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return sctp46_output_inline (vm, node, from_frame, 1 /* is_ip4 */ ); -} - -VLIB_NODE_FN (sctp6_output_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return sctp46_output_inline (vm, node, from_frame, 0 /* is_ip4 */ ); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (sctp4_output_node) = -{ - .name = "sctp4-output", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - .n_errors = SCTP_N_ERROR, - .error_strings = sctp_error_strings, - .n_next_nodes = SCTP_OUTPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [SCTP_OUTPUT_NEXT_##s] = n, - foreach_sctp4_output_next -#undef _ - }, - .format_buffer = format_sctp_header, - .format_trace = format_sctp_tx_trace, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (sctp6_output_node) = -{ - .name = "sctp6-output", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - .n_errors = SCTP_N_ERROR, - .error_strings = sctp_error_strings, - .n_next_nodes = SCTP_OUTPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [SCTP_OUTPUT_NEXT_##s] = n, - foreach_sctp6_output_next -#undef _ - }, - .format_buffer = format_sctp_header, - .format_trace = format_sctp_tx_trace, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |