libmemif: cleanup queue info while memif connecting - vpp

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author	Chun Li <chunl2@cisco.com>	2018-02-07 09:51:35 +0800
committer	Damjan Marion <damarion@cisco.com>	2018-03-07 22:13:15 +0100
commit	4298ab41db0488f4721af4e7d13628e4d17109b9 (patch)
tree	e5f50f96215f2156dd1cc791f9fcd159f533314f /src/vnet/vxlan/vxlan_error.def
parent	a3daf77e4cd1f7695926ac67c25b8750f4bed3b0 (diff)

libmemif: cleanup queue info while memif connecting

Change-Id: I4265fd0606f87f80f43f7f59ced1c3a73de82776 Signed-off-by: Chun Li <chunl2@cisco.com>

Diffstat (limited to 'src/vnet/vxlan/vxlan_error.def')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2016 Cisco and/or its affiliates. * 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. */ /** * @file * @brief Local TCP/IP stack punt infrastructure. * * Provides a set of VPP nodes together with the relevant APIs and CLI * commands in order to adjust and dispatch packets from the VPP data plane * to the local TCP/IP stack */ #include <vnet/ip/ip.h> #include <vlib/vlib.h> #include <vnet/ip/punt.h> #include <vlib/unix/unix.h> #include <stdio.h> #include <unistd.h> #include <sys/socket.h> #include <sys/uio.h> #include <stdlib.h> typedef enum { #define punt_error(n,s) PUNT_ERROR_##n, #include <vnet/ip/punt_error.def> #undef punt_error PUNT_N_ERROR, } punt_error_t; #define foreach_punt_next \ _ (PUNT4, "ip4-punt") \ _ (PUNT6, "ip6-punt") typedef enum { #define _(s,n) PUNT_NEXT_##s, foreach_punt_next #undef _ PUNT_N_NEXT, } punt_next_t; enum punt_socket_rx_next_e { PUNT_SOCKET_RX_NEXT_INTERFACE_OUTPUT, PUNT_SOCKET_RX_NEXT_IP4_LOOKUP, PUNT_SOCKET_RX_NEXT_IP6_LOOKUP, PUNT_SOCKET_RX_N_NEXT }; #define punt_next_punt(is_ip4) (is_ip4 ? PUNT_NEXT_PUNT4 : PUNT_NEXT_PUNT6) /** @brief IPv4/IPv6 UDP punt node main loop. This is the main loop inline function for IPv4/IPv6 UDP punt transition node. @param vm vlib_main_t corresponding to the current thread @param node vlib_node_runtime_t @param frame vlib_frame_t whose contents should be dispatched @param is_ipv4 indicates if called for IPv4 or IPv6 node */ always_inline uword udp46_punt_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame, int is_ip4) { u32 n_left_from, *from, *to_next; word advance; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; /* udp[46]_lookup hands us the data payload, not the IP header */ if (is_ip4) advance = -(sizeof (ip4_header_t) + sizeof (udp_header_t)); else advance = -(sizeof (ip6_header_t) + sizeof (udp_header_t)); while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame (vm, node, punt_next_punt (is_ip4), to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; vlib_buffer_t *b0; 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); vlib_buffer_advance (b0, advance); b0->error = node->errors[PUNT_ERROR_UDP_PORT]; } vlib_put_next_frame (vm, node, punt_next_punt (is_ip4), n_left_to_next); } return from_frame->n_vectors; } static char *punt_error_strings[] = { #define punt_error(n,s) s, #include "punt_error.def" #undef punt_error }; /** @brief IPv4 UDP punt node. @node ip4-udp-punt This is the IPv4 UDP punt transition node. It is registered as a next node for the "ip4-udp-lookup" handling UDP port(s) requested for punt. The buffer's current data pointer is adjusted to the original packet IPv4 header. All buffers are dispatched to "error-punt". @param vm vlib_main_t corresponding to the current thread @param node vlib_node_runtime_t @param frame vlib_frame_t whose contents should be dispatched @par Graph mechanics: next index usage @em Sets: - <code>vnet_buffer(b)->current_data</code> - <code>vnet_buffer(b)->current_len</code> <em>Next Index:</em> - Dispatches the packet to the "error-punt" node */ VLIB_NODE_FN (udp4_punt_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return udp46_punt_inline (vm, node, from_frame, 1 /* is_ip4 */ ); } /** @brief IPv6 UDP punt node. @node ip6-udp-punt This is the IPv6 UDP punt transition node. It is registered as a next node for the "ip6-udp-lookup" handling UDP port(s) requested for punt. The buffer's current data pointer is adjusted to the original packet IPv6 header. All buffers are dispatched to "error-punt". @param vm vlib_main_t corresponding to the current thread @param node vlib_node_runtime_t @param frame vlib_frame_t whose contents should be dispatched @par Graph mechanics: next index usage @em Sets: - <code>vnet_buffer(b)->current_data</code> - <code>vnet_buffer(b)->current_len</code> <em>Next Index:</em> - Dispatches the packet to the "error-punt" node */ VLIB_NODE_FN (udp6_punt_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return udp46_punt_inline (vm, node, from_frame, 0 /* is_ip4 */ ); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (udp4_punt_node) = { .name = "ip4-udp-punt", /* Takes a vector of packets. */ .vector_size = sizeof (u32), .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, .n_next_nodes = PUNT_N_NEXT, .next_nodes = { #define _(s,n) [PUNT_NEXT_##s] = n, foreach_punt_next #undef _ }, }; VLIB_REGISTER_NODE (udp6_punt_node) = { .name = "ip6-udp-punt", /* Takes a vector of packets. */ .vector_size = sizeof (u32), .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, .n_next_nodes = PUNT_N_NEXT, .next_nodes = { #define _(s,n) [PUNT_NEXT_##s] = n, foreach_punt_next #undef _ }, }; /* *INDENT-ON* */ typedef struct { punt_client_t client; u8 is_midchain; u8 packet_data[64]; } udp_punt_trace_t; static u8 * format_udp_punt_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 *); udp_punt_trace_t *t = va_arg (*args, udp_punt_trace_t *); u32 indent = format_get_indent (s); s = format (s, "to: %s", t->client.caddr.sun_path); if (t->is_midchain) { s = format (s, "\n%U(buffer is part of chain)", format_white_space, indent); } s = format (s, "\n%U%U", format_white_space, indent, format_hex_bytes, t->packet_data, sizeof (t->packet_data)); return s; } always_inline uword punt_socket_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, punt_type_t pt, ip_address_family_t af) { u32 *buffers = vlib_frame_vector_args (frame); u32 thread_index = vm->thread_index; uword n_packets = frame->n_vectors; punt_main_t *pm = &punt_main; int i; punt_thread_data_t *ptd = &pm->thread_data[thread_index]; u32 node_index = (AF_IP4 == af ? udp4_punt_socket_node.index : udp6_punt_socket_node.index); for (i = 0; i < n_packets; i++) { struct iovec *iov; vlib_buffer_t *b; uword l; punt_packetdesc_t packetdesc; punt_client_t *c; b = vlib_get_buffer (vm, buffers[i]); if (PUNT_TYPE_L4 == pt) { /* Reverse UDP Punt advance */ udp_header_t *udp; if (AF_IP4 == af) { vlib_buffer_advance (b, -(sizeof (ip4_header_t) + sizeof (udp_header_t))); ip4_header_t *ip = vlib_buffer_get_current (b); udp = (udp_header_t *) (ip + 1); } else { vlib_buffer_advance (b, -(sizeof (ip6_header_t) + sizeof (udp_header_t))); ip6_header_t *ip = vlib_buffer_get_current (b); udp = (udp_header_t *) (ip + 1); } /* * Find registerered client * If no registered client, drop packet and count */ c = punt_client_l4_get (af, clib_net_to_host_u16 (udp->dst_port)); } else if (PUNT_TYPE_IP_PROTO == pt) { /* Reverse UDP Punt advance */ ip_protocol_t proto; if (AF_IP4 == af) { ip4_header_t *ip = vlib_buffer_get_current (b); proto = ip->protocol; } else { ip6_header_t *ip = vlib_buffer_get_current (b); proto = ip->protocol; } c = punt_client_ip_proto_get (af, proto); } else if (PUNT_TYPE_EXCEPTION == pt) { c = punt_client_exception_get (b->punt_reason); } else c = NULL; if (PREDICT_FALSE (NULL == c)) { vlib_node_increment_counter (vm, node_index, PUNT_ERROR_SOCKET_TX_ERROR, 1); goto error; } struct sockaddr_un *caddr = &c->caddr; /* Re-set iovecs */ vec_reset_length (ptd->iovecs); /* Add packet descriptor */ packetdesc.sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX]; packetdesc.action = 0; vec_add2 (ptd->iovecs, iov, 1); iov->iov_base = &packetdesc; iov->iov_len = sizeof (packetdesc); /** VLIB buffer chain -> Unix iovec(s). */ vlib_buffer_advance (b, -(sizeof (ethernet_header_t))); vec_add2 (ptd->iovecs, iov, 1); iov->iov_base = b->data + b->current_data; iov->iov_len = l = b->current_length; if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED)) { udp_punt_trace_t *t; t = vlib_add_trace (vm, node, b, sizeof (t[0])); clib_memcpy_fast (&t->client, c, sizeof (t->client)); clib_memcpy_fast (t->packet_data, vlib_buffer_get_current (b), sizeof (t->packet_data)); } if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT)) { do { b = vlib_get_buffer (vm, b->next_buffer); if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED)) { udp_punt_trace_t *t; t = vlib_add_trace (vm, node, b, sizeof (t[0])); clib_memcpy_fast (&t->client, c, sizeof (t->client)); t->is_midchain = 1; } vec_add2 (ptd->iovecs, iov, 1); iov->iov_base = b->data + b->current_data; iov->iov_len = b->current_length; l += b->current_length; } while (b->flags & VLIB_BUFFER_NEXT_PRESENT); } struct msghdr msg = { .msg_name = caddr, .msg_namelen = sizeof (*caddr), .msg_iov = ptd->iovecs, .msg_iovlen = vec_len (ptd->iovecs), }; if (sendmsg (pm->socket_fd, &msg, 0) < (ssize_t) l) vlib_node_increment_counter (vm, node_index, PUNT_ERROR_SOCKET_TX_ERROR, 1); else vlib_node_increment_counter (vm, node_index, PUNT_ERROR_SOCKET_TX, 1); } error: vlib_buffer_free (vm, buffers, n_packets); return n_packets; } static uword udp4_punt_socket (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return punt_socket_inline (vm, node, from_frame, PUNT_TYPE_L4, AF_IP4); } static uword udp6_punt_socket (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return punt_socket_inline (vm, node, from_frame, PUNT_TYPE_L4, AF_IP6); } static uword ip4_proto_punt_socket (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return punt_socket_inline (vm, node, from_frame, PUNT_TYPE_IP_PROTO, AF_IP4); } static uword ip6_proto_punt_socket (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return punt_socket_inline (vm, node, from_frame, PUNT_TYPE_IP_PROTO, AF_IP6); } static uword exception_punt_socket (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return punt_socket_inline (vm, node, from_frame, PUNT_TYPE_EXCEPTION, AF_IP4); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (udp4_punt_socket_node) = { .function = udp4_punt_socket, .name = "ip4-udp-punt-socket", .format_trace = format_udp_punt_trace, .flags = VLIB_NODE_FLAG_IS_DROP, /* Takes a vector of packets. */ .vector_size = sizeof (u32), .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, }; VLIB_REGISTER_NODE (udp6_punt_socket_node) = { .function = udp6_punt_socket, .name = "ip6-udp-punt-socket", .format_trace = format_udp_punt_trace, .flags = VLIB_NODE_FLAG_IS_DROP, .vector_size = sizeof (u32), .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, }; VLIB_REGISTER_NODE (ip4_proto_punt_socket_node) = { .function = ip4_proto_punt_socket, .name = "ip4-proto-punt-socket", .format_trace = format_udp_punt_trace, .flags = VLIB_NODE_FLAG_IS_DROP, /* Takes a vector of packets. */ .vector_size = sizeof (u32), .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, }; VLIB_REGISTER_NODE (ip6_proto_punt_socket_node) = { .function = ip6_proto_punt_socket, .name = "ip6-proto-punt-socket", .format_trace = format_udp_punt_trace, .flags = VLIB_NODE_FLAG_IS_DROP, .vector_size = sizeof (u32), .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, }; VLIB_REGISTER_NODE (exception_punt_socket_node) = { .function = exception_punt_socket, .name = "exception-punt-socket", .format_trace = format_udp_punt_trace, .flags = VLIB_NODE_FLAG_IS_DROP, .vector_size = sizeof (u32), .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, }; /* *INDENT-ON* */ typedef struct { enum punt_action_e action; u32 sw_if_index; } punt_trace_t; static u8 * format_punt_trace (u8 * s, va_list * va) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *); vnet_main_t *vnm = vnet_get_main (); punt_trace_t *t = va_arg (*va, punt_trace_t *); s = format (s, "%U Action: %d", format_vnet_sw_if_index_name, vnm, t->sw_if_index, t->action); return s; } static uword punt_socket_rx_fd (vlib_main_t * vm, vlib_node_runtime_t * node, u32 fd) { const uword buffer_size = vlib_buffer_get_default_data_size (vm); u32 n_trace = vlib_get_trace_count (vm, node); u32 next = node->cached_next_index; u32 n_left_to_next, next_index; u32 *to_next; u32 error = PUNT_ERROR_NONE; vlib_get_next_frame (vm, node, next, to_next, n_left_to_next); /* $$$$ Only dealing with one buffer at the time for now */ u32 bi; vlib_buffer_t *b; punt_packetdesc_t packetdesc; ssize_t size; struct iovec io[2]; if (vlib_buffer_alloc (vm, &bi, 1) != 1) { error = PUNT_ERROR_NOBUFFER; goto error; } b = vlib_get_buffer (vm, bi); io[0].iov_base = &packetdesc; io[0].iov_len = sizeof (packetdesc); io[1].iov_base = b->data; io[1].iov_len = buffer_size; size = readv (fd, io, 2); /* We need at least the packet descriptor plus a header */ if (size <= (int) (sizeof (packetdesc) + sizeof (ip4_header_t))) { vlib_buffer_free (vm, &bi, 1); error = PUNT_ERROR_READV; goto error; } b->flags = VNET_BUFFER_F_LOCALLY_ORIGINATED; b->current_length = size - sizeof (packetdesc); switch (packetdesc.action) { case PUNT_L2: vnet_buffer (b)->sw_if_index[VLIB_TX] = packetdesc.sw_if_index; next_index = PUNT_SOCKET_RX_NEXT_INTERFACE_OUTPUT; break; case PUNT_IP4_ROUTED: vnet_buffer (b)->sw_if_index[VLIB_RX] = packetdesc.sw_if_index; vnet_buffer (b)->sw_if_index[VLIB_TX] = ~0; next_index = PUNT_SOCKET_RX_NEXT_IP4_LOOKUP; break; case PUNT_IP6_ROUTED: vnet_buffer (b)->sw_if_index[VLIB_RX] = packetdesc.sw_if_index; vnet_buffer (b)->sw_if_index[VLIB_TX] = ~0; next_index = PUNT_SOCKET_RX_NEXT_IP6_LOOKUP; break; default: error = PUNT_ERROR_ACTION; vlib_buffer_free (vm, &bi, 1); goto error; } if (PREDICT_FALSE (n_trace > 0 && vlib_trace_buffer (vm, node, next_index, b, 1 /* follow_chain */ ))) { punt_trace_t *t; vlib_set_trace_count (vm, node, --n_trace); t = vlib_add_trace (vm, node, b, sizeof (*t)); t->sw_if_index = packetdesc.sw_if_index; t->action = packetdesc.action; } to_next[0] = bi; to_next++; n_left_to_next--; vlib_validate_buffer_enqueue_x1 (vm, node, next, to_next, n_left_to_next, bi, next_index); vlib_put_next_frame (vm, node, next, n_left_to_next); return 1; error: vlib_put_next_frame (vm, node, next, n_left_to_next); vlib_node_increment_counter (vm, punt_socket_rx_node.index, error, 1); return 0; } static uword punt_socket_rx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { punt_main_t *pm = &punt_main; u32 total_count = 0; int i; for (i = 0; i < vec_len (pm->ready_fds); i++) { total_count += punt_socket_rx_fd (vm, node, pm->ready_fds[i]); vec_del1 (pm->ready_fds, i); } return total_count; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (punt_socket_rx_node) = { .function = punt_socket_rx, .name = "punt-socket-rx", .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED, .type = VLIB_NODE_TYPE_INPUT, .state = VLIB_NODE_STATE_INTERRUPT, .vector_size = 1, .n_errors = PUNT_N_ERROR, .error_strings = punt_error_strings, .n_next_nodes = PUNT_SOCKET_RX_N_NEXT, .next_nodes = { [PUNT_SOCKET_RX_NEXT_INTERFACE_OUTPUT] = "interface-output", [PUNT_SOCKET_RX_NEXT_IP4_LOOKUP] = "ip4-lookup", [PUNT_SOCKET_RX_NEXT_IP6_LOOKUP] = "ip6-lookup", }, .format_trace = format_punt_trace, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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