diff options
Diffstat (limited to 'src/vnet/udp/udp_input.c')
| -rw-r--r-- | src/vnet/udp/udp_input.c | 348 |
1 files changed, 167 insertions, 181 deletions
diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c index 5d3a1855269..8170cfbe49a 100644 --- a/src/vnet/udp/udp_input.c +++ b/src/vnet/udp/udp_input.c @@ -28,55 +28,62 @@ #include <vlibmemory/api.h> #include "../session/application_interface.h" -vlib_node_registration_t udp4_uri_input_node; +static char *udp_error_strings[] = { +#define udp_error(n,s) s, +#include "udp_error.def" +#undef udp_error +}; typedef struct { - u32 session; + u32 connection; u32 disposition; u32 thread_index; -} udp4_uri_input_trace_t; +} udp_input_trace_t; /* packet trace format function */ static u8 * -format_udp4_uri_input_trace (u8 * s, va_list * args) +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 *); - udp4_uri_input_trace_t *t = va_arg (*args, udp4_uri_input_trace_t *); + udp_input_trace_t *t = va_arg (*args, udp_input_trace_t *); - s = format (s, "UDP4_URI_INPUT: session %d, disposition %d, thread %d", - t->session, t->disposition, t->thread_index); + 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 { - UDP4_URI_INPUT_NEXT_DROP, - UDP4_URI_INPUT_N_NEXT, -} udp4_uri_input_next_t; - -static char *udp4_uri_input_error_strings[] = { -#define _(sym,string) string, - foreach_session_input_error +#define _(s, n) UDP_INPUT_NEXT_##s, + foreach_udp_input_next #undef _ -}; + UDP_INPUT_N_NEXT, +} udp_input_next_t; -static uword -udp4_uri_input_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +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, *to_next; - udp4_uri_input_next_t next_index; - udp_uri_main_t *um = vnet_get_udp_main (); - session_manager_main_t *smm = vnet_get_session_manager_main (); + u32 next_index, errors; u32 my_thread_index = vm->thread_index; - u8 my_enqueue_epoch; - u32 *session_indices_to_enqueue; - static u32 serial_number; - int i; - - my_enqueue_epoch = ++smm->current_enqueue_epoch[my_thread_index]; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; @@ -90,16 +97,18 @@ udp4_uri_input_node_fn (vlib_main_t * vm, while (n_left_from > 0 && n_left_to_next > 0) { - u32 bi0; + u32 bi0, fib_index0; vlib_buffer_t *b0; - u32 next0 = UDP4_URI_INPUT_NEXT_DROP; - u32 error0 = SESSION_ERROR_ENQUEUED; + u32 next0 = UDP_INPUT_NEXT_DROP; + u32 error0 = UDP_ERROR_ENQUEUED; udp_header_t *udp0; - ip4_header_t *ip0; - stream_session_t *s0; - svm_fifo_t *f0; - u16 udp_len0; + ip4_header_t *ip40; + ip6_header_t *ip60; u8 *data0; + stream_session_t *s0; + transport_connection_t *tc0 = 0; + udp_connection_t *child0, *new_uc0; + int written0; /* speculatively enqueue b0 to the current next frame */ bi0 = from[0]; @@ -112,89 +121,97 @@ udp4_uri_input_node_fn (vlib_main_t * vm, 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; - /* $$$$ fixme: udp_local doesn't do ip options correctly anyhow */ - ip0 = (ip4_header_t *) (((u8 *) udp0) - sizeof (*ip0)); - s0 = 0; - - /* lookup session */ - s0 = session_lookup4 (0, &ip0->dst_address, &ip0->src_address, - udp0->dst_port, udp0->src_port, - TRANSPORT_PROTO_UDP); + if (is_ip4) + { + /* $$$$ fixme: udp_local doesn't do ip options correctly anyhow */ + ip40 = (ip4_header_t *) (((u8 *) udp0) - sizeof (*ip40)); + s0 = session_lookup_safe4 (fib_index0, &ip40->dst_address, + &ip40->src_address, udp0->dst_port, + udp0->src_port, TRANSPORT_PROTO_UDP); + } + else + { + ip60 = (ip6_header_t *) (((u8 *) udp0) - sizeof (*ip60)); + s0 = session_lookup_safe6 (fib_index0, &ip60->dst_address, + &ip60->src_address, udp0->dst_port, + udp0->src_port, TRANSPORT_PROTO_UDP); + } - /* no listener */ if (PREDICT_FALSE (s0 == 0)) { - error0 = SESSION_ERROR_NO_LISTENER; + error0 = UDP_ERROR_NO_LISTENER; goto trace0; } - f0 = s0->server_rx_fifo; - - /* established hit */ if (PREDICT_TRUE (s0->session_state == SESSION_STATE_READY)) { - udp_len0 = clib_net_to_host_u16 (udp0->length); - - if (PREDICT_FALSE (udp_len0 > svm_fifo_max_enqueue (f0))) - { - error0 = SESSION_ERROR_FIFO_FULL; - goto trace0; - } - - svm_fifo_enqueue_nowait (f0, udp_len0 - sizeof (*udp0), - (u8 *) (udp0 + 1)); - - b0->error = node->errors[SESSION_ERROR_ENQUEUED]; - - /* We need to send an RX event on this fifo */ - if (s0->enqueue_epoch != my_enqueue_epoch) - { - s0->enqueue_epoch = my_enqueue_epoch; - - vec_add1 (smm->session_indices_to_enqueue_by_thread - [my_thread_index], - s0 - smm->sessions[my_thread_index]); - } + tc0 = session_get_transport (s0); } - /* listener hit */ - else if (s0->session_state == SESSION_STATE_LISTENING) + else if (s0->session_state == SESSION_STATE_CONNECTING_READY) { - udp_connection_t *us; - int rv; - - error0 = SESSION_ERROR_NOT_READY; - /* - * create udp transport session + * Clone the transport. It will be cleaned up with the + * session once we notify the session layer. */ - pool_get (um->udp_sessions[my_thread_index], us); - - us->mtu = 1024; /* $$$$ policy */ - - us->c_lcl_ip4.as_u32 = ip0->dst_address.as_u32; - us->c_rmt_ip4.as_u32 = ip0->src_address.as_u32; - us->c_lcl_port = udp0->dst_port; - us->c_rmt_port = udp0->src_port; - us->c_transport_proto = TRANSPORT_PROTO_UDP; - us->c_c_index = us - um->udp_sessions[my_thread_index]; + new_uc0 = udp_conenction_clone_safe (s0->connection_index, + s0->thread_index); + ASSERT (s0->session_index == new_uc0->c_s_index); /* - * create stream session and attach the udp session to it + * Drop the 'lock' on pool resize */ - rv = stream_session_accept (&us->connection, s0->session_index, - 1 /*notify */ ); - if (rv) - error0 = rv; + session_pool_remove_peeker (s0->thread_index); + session_dgram_connect_notify (&new_uc0->connection, + s0->thread_index, &s0); + tc0 = &new_uc0->connection; + } + else if (s0->session_state == SESSION_STATE_LISTENING) + { + tc0 = listen_session_get_transport (s0); + + child0 = udp_connection_alloc (my_thread_index); + if (is_ip4) + { + ip_set (&child0->c_lcl_ip, &ip40->dst_address, 1); + ip_set (&child0->c_rmt_ip, &ip40->src_address, 1); + } + else + { + ip_set (&child0->c_lcl_ip, &ip60->dst_address, 0); + ip_set (&child0->c_rmt_ip, &ip60->src_address, 0); + } + child0->c_lcl_port = udp0->dst_port; + child0->c_rmt_port = udp0->src_port; + child0->c_is_ip4 = is_ip4; + child0->mtu = 1460; /* $$$$ policy */ + + if (stream_session_accept + (&child0->connection, tc0->s_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; + error0 = UDP_ERROR_LISTENER; } else { + error0 = UDP_ERROR_NOT_READY; + goto trace0; + } - error0 = SESSION_ERROR_NOT_READY; + written0 = session_enqueue_dgram_connection (s0, b0, tc0->proto, + 1 /* queue evt */ ); + if (PREDICT_FALSE (written0 < 0)) + { + error0 = UDP_ERROR_FIFO_FULL; goto trace0; } @@ -204,17 +221,14 @@ udp4_uri_input_node_fn (vlib_main_t * vm, if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && (b0->flags & VLIB_BUFFER_IS_TRACED))) { - udp4_uri_input_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); + udp_input_trace_t *t = vlib_add_trace (vm, node, b0, + sizeof (*t)); - t->session = ~0; - if (s0) - t->session = s0 - smm->sessions[my_thread_index]; + t->connection = tc0 ? tc0->c_index : ~0; t->disposition = error0; t->thread_index = my_thread_index; } - /* verify speculative enqueue, maybe switch current next frame */ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0); @@ -223,94 +237,66 @@ udp4_uri_input_node_fn (vlib_main_t * vm, vlib_put_next_frame (vm, node, next_index, n_left_to_next); } - /* Send enqueue events */ - - session_indices_to_enqueue = - smm->session_indices_to_enqueue_by_thread[my_thread_index]; - - for (i = 0; i < vec_len (session_indices_to_enqueue); i++) - { - session_fifo_event_t evt; - unix_shared_memory_queue_t *q; - stream_session_t *s0; - application_t *server0; - - /* Get session */ - s0 = pool_elt_at_index (smm->sessions[my_thread_index], - session_indices_to_enqueue[i]); - - /* Get session's server */ - server0 = application_get (s0->app_index); - - /* Built-in server? Deliver the goods... */ - if (server0->cb_fns.builtin_server_rx_callback) - { - server0->cb_fns.builtin_server_rx_callback (s0); - continue; - } - - if (svm_fifo_set_event (s0->server_rx_fifo)) - { - /* Fabricate event */ - evt.fifo = s0->server_rx_fifo; - evt.event_type = FIFO_EVENT_APP_RX; - evt.event_id = serial_number++; - - /* Add event to server's event queue */ - q = server0->event_queue; - - /* Don't block for lack of space */ - if (PREDICT_TRUE (q->cursize < q->maxsize)) - { - unix_shared_memory_queue_add (server0->event_queue, - (u8 *) & evt, - 0 /* do wait for mutex */ ); - } - else - { - vlib_node_increment_counter (vm, udp4_uri_input_node.index, - SESSION_ERROR_FIFO_FULL, 1); - } - } - /* *INDENT-OFF* */ - if (1) - { - ELOG_TYPE_DECLARE (e) = - { - .format = "evt-enqueue: id %d length %d", - .format_args = "i4i4",}; - struct - { - u32 data[2]; - } *ed; - ed = ELOG_DATA (&vlib_global_main.elog_main, e); - ed->data[0] = evt.event_id; - ed->data[1] = svm_fifo_max_dequeue (s0->server_rx_fifo); - } - /* *INDENT-ON* */ + errors = session_manager_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; +} - } +vlib_node_registration_t udp4_input_node; +vlib_node_registration_t udp6_input_node; - vec_reset_length (session_indices_to_enqueue); +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); +} - smm->session_indices_to_enqueue_by_thread[my_thread_index] = - session_indices_to_enqueue; +/* *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* */ - return frame->n_vectors; +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); } -VLIB_REGISTER_NODE (udp4_uri_input_node) = +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (udp6_input_node) = { - .function = udp4_uri_input_node_fn,.name = "udp4-uri-input",.vector_size = - sizeof (u32),.format_trace = format_udp4_uri_input_trace,.type = - VLIB_NODE_TYPE_INTERNAL,.n_errors = - ARRAY_LEN (udp4_uri_input_error_strings),.error_strings = - udp4_uri_input_error_strings,.n_next_nodes = UDP4_URI_INPUT_N_NEXT, - /* edit / add dispositions here */ - .next_nodes = - { - [UDP4_URI_INPUT_NEXT_DROP] = "error-drop",} -,}; + .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 |