/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
+ * 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:
* limitations under the License.
*/
+#include <vlibmemory/api.h>
#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
-#include <vnet/ip/ip.h>
-#include <vnet/udp/udp.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 <vlibmemory/api.h>
-#include "../session/application_interface.h"
+#include <vnet/session/session.h>
static char *udp_error_strings[] = {
#define udp_error(n,s) s,
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;
- u32 next_index, errors;
+ u32 n_left_from, *from;
+ u32 errors, *first_buffer;
u32 my_thread_index = vm->thread_index;
- from = vlib_frame_vector_args (frame);
+ from = first_buffer = vlib_frame_vector_args (frame);
n_left_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, fib_index0, data_len;
+ 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)
{
- u32 bi0, fib_index0;
- vlib_buffer_t *b0;
- u32 next0 = UDP_INPUT_NEXT_DROP;
- u32 error0 = UDP_ERROR_ENQUEUED;
- udp_header_t *udp0;
- 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];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 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)
- {
- /* $$$$ 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);
- }
+ /* 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;
+ data_len = clib_net_to_host_u16 (ip40->length);
+ data_len -= sizeof (ip4_header_t) + sizeof (udp_header_t);
+ }
+ 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;
+ data_len = clib_net_to_host_u16 (ip60->payload_length);
+ data_len -= sizeof (udp_header_t);
+ }
- if (PREDICT_FALSE (s0 == 0))
- {
- error0 = UDP_ERROR_NO_LISTENER;
- goto trace0;
- }
+ if (PREDICT_FALSE (!s0))
+ {
+ error0 = UDP_ERROR_NO_LISTENER;
+ goto trace0;
+ }
- if (PREDICT_TRUE (s0->session_state == SESSION_STATE_READY))
- {
- tc0 = session_get_transport (s0);
- }
- else if (s0->session_state == SESSION_STATE_CONNECTING_READY)
+ 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)
{
- /*
- * Clone the transport. It will be cleaned up with the
- * session once we notify the session layer.
- */
- new_uc0 = udp_conenction_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;
+ 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_LISTENING)
+ }
+ 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)
{
- tc0 = listen_session_get_transport (s0);
-
child0 = udp_connection_alloc (my_thread_index);
if (is_ip4)
{
child0->c_lcl_port = udp0->dst_port;
child0->c_rmt_port = udp0->src_port;
child0->c_is_ip4 = is_ip4;
- child0->mtu = 1460; /* $$$$ policy */
+ child0->c_fib_index = tc0->fib_index;
+ child0->flags |= UDP_CONN_F_CONNECTED;
- if (stream_session_accept
- (&child0->connection, tc0->s_index, 1))
+ 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);
+ udp_connection_share_port (clib_net_to_host_u16
+ (uc0->c_lcl_port), uc0->c_is_ip4);
error0 = UDP_ERROR_LISTENER;
}
- else
- {
- error0 = UDP_ERROR_NOT_READY;
- goto trace0;
- }
+ }
+ else
+ {
+ error0 = UDP_ERROR_NOT_READY;
+ goto trace0;
+ }
- written0 = session_enqueue_dgram_connection (s0, b0, tc0->proto,
- 1 /* queue evt */ );
- if (PREDICT_FALSE (written0 < 0))
- {
- error0 = UDP_ERROR_FIFO_FULL;
- goto trace0;
- }
- trace0:
- b0->error = node->errors[error0];
+ if (svm_fifo_max_enqueue_prod (s0->rx_fifo)
+ < data_len + sizeof (session_dgram_hdr_t))
+ {
+ error0 = UDP_ERROR_FIFO_FULL;
+ goto trace0;
+ }
+ hdr0.data_length = b0->current_length = data_len;
+ 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 (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));
+ if (s0->session_state != SESSION_STATE_LISTENING)
+ session_pool_remove_peeker (s0->thread_index);
- t->connection = tc0 ? tc0->c_index : ~0;
- t->disposition = error0;
- t->thread_index = my_thread_index;
- }
+ trace0:
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, next0);
- }
+ b0->error = node->errors[error0];
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ 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;
+ }
}
- errors = session_manager_flush_enqueue_events (TRANSPORT_PROTO_UDP,
- 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;
}
-vlib_node_registration_t udp4_input_node;
-vlib_node_registration_t udp6_input_node;
static uword
udp4_input (vlib_main_t * vm, vlib_node_runtime_t * node,
Code Review / vpp.git / blobdiff