vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2016-07-08	Remove unnecessary and obsolete configure.ac directives	Damjan Marion	1	-2/+1
2016-02-10	Replace AC_PROG_LIBTOOL with LT_INIT	Dave Barach	1	-1/+1
2016-01-28	vpp metrics upload via gmond plugin	Dave Barach	1	-0/+9

/* * Copyright (c) 2016-2019 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. */ #include <vlibmemory/api.h> #include <vlib/vlib.h> #include <vppinfra/hash.h> #include <vppinfra/error.h> #include <vppinfra/elog.h> #include <vnet/vnet.h> #include <vnet/pg/pg.h> #include <vnet/ip/ip.h> #include <vnet/udp/udp.h> #include <vnet/udp/udp_packet.h> #include <vnet/session/session.h> static char *udp_error_strings[] = { #define udp_error(n,s) s, #include "udp_error.def" #undef udp_error }; typedef struct { u32 connection; u32 disposition; u32 thread_index; } udp_input_trace_t; /* packet trace format function */ static u8 * format_udp_input_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_input_trace_t *t = va_arg (*args, udp_input_trace_t *); s = format (s, "UDP_INPUT: connection %d, disposition %d, thread %d", t->connection, t->disposition, t->thread_index); return s; } #define foreach_udp_input_next \ _ (DROP, "error-drop") typedef enum { #define _(s, n) UDP_INPUT_NEXT_##s, foreach_udp_input_next #undef _ UDP_INPUT_N_NEXT, } udp_input_next_t; always_inline void udp_input_inc_counter (vlib_main_t * vm, u8 is_ip4, u8 evt, u8 val) { if (PREDICT_TRUE (!val)) return; if (is_ip4) vlib_node_increment_counter (vm, udp4_input_node.index, evt, val); else vlib_node_increment_counter (vm, udp6_input_node.index, evt, val); } always_inline uword udp46_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, u8 is_ip4) { u32 n_left_from, *from; u32 errors, *first_buffer; u32 my_thread_index = vm->thread_index; from = first_buffer = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; while (n_left_from > 0) { u32 bi0, fib_index0; vlib_buffer_t *b0; u32 error0 = UDP_ERROR_ENQUEUED; udp_header_t *udp0; ip4_header_t *ip40; ip6_header_t *ip60; u8 *data0; session_t *s0; udp_connection_t *uc0, *child0, *new_uc0; transport_connection_t *tc0; int wrote0; void *rmt_addr, *lcl_addr; session_dgram_hdr_t hdr0; u8 queue_event = 1; /* speculatively enqueue b0 to the current next frame */ bi0 = from[0]; from += 1; n_left_from -= 1; b0 = vlib_get_buffer (vm, bi0); /* udp_local hands us a pointer to the udp data */ data0 = vlib_buffer_get_current (b0); udp0 = (udp_header_t *) (data0 - sizeof (*udp0)); fib_index0 = vnet_buffer (b0)->ip.fib_index; if (is_ip4) { /* TODO: must fix once udp_local does ip options correctly */ ip40 = (ip4_header_t *) (((u8 *) udp0) - sizeof (*ip40)); s0 = session_lookup_safe4 (fib_index0, &ip40->dst_address, &ip40->src_address, udp0->dst_port, udp0->src_port, TRANSPORT_PROTO_UDP); lcl_addr = &ip40->dst_address; rmt_addr = &ip40->src_address; } else { ip60 = (ip6_header_t *) (((u8 *) udp0) - sizeof (*ip60)); s0 = session_lookup_safe6 (fib_index0, &ip60->dst_address, &ip60->src_address, udp0->dst_port, udp0->src_port, TRANSPORT_PROTO_UDP); lcl_addr = &ip60->dst_address; rmt_addr = &ip60->src_address; } if (PREDICT_FALSE (!s0)) { error0 = UDP_ERROR_NO_LISTENER; goto trace0; } if (s0->session_state == SESSION_STATE_OPENED) { /* TODO optimization: move cl session to right thread * However, since such a move would affect the session handle, * which we pass 'raw' to the app, we'd also have notify the * app of the change or change the way we pass handles to apps. */ tc0 = session_get_transport (s0); uc0 = udp_get_connection_from_transport (tc0); if (uc0->flags & UDP_CONN_F_CONNECTED) { if (s0->thread_index != vlib_get_thread_index ()) { /* * Clone the transport. It will be cleaned up with the * session once we notify the session layer. */ new_uc0 = udp_connection_clone_safe (s0->connection_index, s0->thread_index); ASSERT (s0->session_index == new_uc0->c_s_index); /* * Drop the 'lock' on pool resize */ session_pool_remove_peeker (s0->thread_index); session_dgram_connect_notify (&new_uc0->connection, s0->thread_index, &s0); tc0 = &new_uc0->connection; uc0 = new_uc0; queue_event = 0; } else s0->session_state = SESSION_STATE_READY; } } else if (s0->session_state == SESSION_STATE_READY) { tc0 = session_get_transport (s0); uc0 = udp_get_connection_from_transport (tc0); } else if (s0->session_state == SESSION_STATE_LISTENING) { tc0 = listen_session_get_transport (s0); uc0 = udp_get_connection_from_transport (tc0); if (uc0->flags & UDP_CONN_F_CONNECTED) { child0 = udp_connection_alloc (my_thread_index); if (is_ip4) { ip_set (&child0->c_lcl_ip, &ip40->dst_address, 1); ip_set (&child0->c_rmt_ip, &ip40->src_address, 1); } else { ip_set (&child0->c_lcl_ip, &ip60->dst_address, 0); ip_set (&child0->c_rmt_ip, &ip60->src_address, 0); } child0->c_lcl_port = udp0->dst_port; child0->c_rmt_port = udp0->src_port; child0->c_is_ip4 = is_ip4; child0->c_fib_index = tc0->fib_index; child0->flags |= UDP_CONN_F_CONNECTED; if (session_stream_accept (&child0->connection, tc0->s_index, tc0->thread_index, 1)) { error0 = UDP_ERROR_CREATE_SESSION; goto trace0; } s0 = session_get (child0->c_s_index, child0->c_thread_index); s0->session_state = SESSION_STATE_READY; tc0 = &child0->connection; uc0 = udp_get_connection_from_transport (tc0); error0 = UDP_ERROR_LISTENER; } } else { error0 = UDP_ERROR_NOT_READY; goto trace0; } if (svm_fifo_max_enqueue_prod (s0->rx_fifo) < b0->current_length + sizeof (session_dgram_hdr_t)) { error0 = UDP_ERROR_FIFO_FULL; goto trace0; } hdr0.data_length = b0->current_length; hdr0.data_offset = 0; ip_set (&hdr0.lcl_ip, lcl_addr, is_ip4); ip_set (&hdr0.rmt_ip, rmt_addr, is_ip4); hdr0.lcl_port = udp0->dst_port; hdr0.rmt_port = udp0->src_port; hdr0.is_ip4 = is_ip4; clib_spinlock_lock (&uc0->rx_lock); /* If session is owned by another thread and rx event needed, * enqueue event now while we still have the peeker lock */ if (s0->thread_index != my_thread_index) { wrote0 = session_enqueue_dgram_connection (s0, &hdr0, b0, TRANSPORT_PROTO_UDP, /* queue event */ 0); if (queue_event && !svm_fifo_has_event (s0->rx_fifo)) session_enqueue_notify (s0); } else { wrote0 = session_enqueue_dgram_connection (s0, &hdr0, b0, TRANSPORT_PROTO_UDP, queue_event); } clib_spinlock_unlock (&uc0->rx_lock); ASSERT (wrote0 > 0); if (s0->session_state != SESSION_STATE_LISTENING) session_pool_remove_peeker (s0->thread_index); trace0: b0->error = node->errors[error0]; if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && (b0->flags & VLIB_BUFFER_IS_TRACED))) { udp_input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); t->connection = s0 ? s0->connection_index : ~0; t->disposition = error0; t->thread_index = my_thread_index; } } vlib_buffer_free (vm, first_buffer, frame->n_vectors); errors = session_main_flush_enqueue_events (TRANSPORT_PROTO_UDP, my_thread_index); udp_input_inc_counter (vm, is_ip4, UDP_ERROR_EVENT_FIFO_FULL, errors); return frame->n_vectors; } static uword udp4_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return udp46_input_inline (vm, node, frame, 1); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (udp4_input_node) = { .function = udp4_input, .name = "udp4-input", .vector_size = sizeof (u32), .format_trace = format_udp_input_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (udp_error_strings), .error_strings = udp_error_strings, .n_next_nodes = UDP_INPUT_N_NEXT, .next_nodes = { #define _(s, n) [UDP_INPUT_NEXT_##s] = n, foreach_udp_input_next #undef _ }, }; /* *INDENT-ON* */ static uword udp6_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return udp46_input_inline (vm, node, frame, 0); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (udp6_input_node) = { .function = udp6_input, .name = "udp6-input", .vector_size = sizeof (u32), .format_trace = format_udp_input_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN (udp_error_strings), .error_strings = udp_error_strings, .n_next_nodes = UDP_INPUT_N_NEXT, .next_nodes = { #define _(s, n) [UDP_INPUT_NEXT_##s] = n, foreach_udp_input_next #undef _ }, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */