/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Copyright (c) 2016-2020 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.
*/
-/** @file
- udp state machine, etc.
-*/
-
#include <vnet/udp/udp.h>
#include <vnet/session/session.h>
#include <vnet/dpo/load_balance.h>
#include <vnet/fib/ip4_fib.h>
+#include <vppinfra/sparse_vec.h>
-udp_uri_main_t udp_uri_main;
+udp_main_t udp_main;
-u32
-udp_session_bind_ip4 (u32 session_index, transport_endpoint_t * lcl)
+static void
+udp_connection_register_port (vlib_main_t * vm, u16 lcl_port, u8 is_ip4)
{
- udp_uri_main_t *um = vnet_get_udp_main ();
- udp_connection_t *listener;
+ udp_main_t *um = &udp_main;
+ udp_dst_port_info_t *pi;
+ u16 *n;
- pool_get (um->udp_listeners, listener);
- memset (listener, 0, sizeof (udp_connection_t));
- listener->c_lcl_port = clib_host_to_net_u16 (lcl->port);
- listener->c_lcl_ip4.as_u32 = lcl->ip.ip4.as_u32;
- listener->c_transport_proto = TRANSPORT_PROTO_UDP;
- udp_register_dst_port (um->vlib_main, lcl->port, udp4_uri_input_node.index,
- 1 /* is_ipv4 */ );
- return 0;
-}
-
-u32
-udp_session_bind_ip6 (u32 session_index, transport_endpoint_t * lcl)
-{
- udp_uri_main_t *um = vnet_get_udp_main ();
- udp_connection_t *listener;
+ pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
+ if (!pi)
+ {
+ udp_add_dst_port (um, lcl_port, 0, is_ip4);
+ pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
+ pi->n_connections = 1;
+ }
+ else
+ {
+ pi->n_connections += 1;
+ /* Do not return. The fact that the pi is valid does not mean
+ * it's up to date */
+ }
- pool_get (um->udp_listeners, listener);
- listener->c_lcl_port = clib_host_to_net_u16 (lcl->port);
- clib_memcpy (&listener->c_lcl_ip6, &lcl->ip.ip6, sizeof (ip6_address_t));
- listener->c_transport_proto = TRANSPORT_PROTO_UDP;
- udp_register_dst_port (um->vlib_main, lcl->port,
- udp4_uri_input_node.index, 0 /* is_ipv4 */ );
- return 0;
-}
+ pi->node_index = is_ip4 ? udp4_input_node.index : udp6_input_node.index;
+ pi->next_index = um->local_to_input_edge[is_ip4];
-u32
-udp_session_unbind_ip4 (u32 listener_index)
-{
- vlib_main_t *vm = vlib_get_main ();
- udp_connection_t *listener;
- listener = udp_listener_get (listener_index);
+ /* Setup udp protocol -> next index sparse vector mapping. */
+ if (is_ip4)
+ n = sparse_vec_validate (um->next_by_dst_port4,
+ clib_host_to_net_u16 (lcl_port));
+ else
+ n = sparse_vec_validate (um->next_by_dst_port6,
+ clib_host_to_net_u16 (lcl_port));
- /* deregister the udp_local mapping */
- udp_unregister_dst_port (vm, listener->c_lcl_port, 1 /* is_ipv4 */ );
- return 0;
+ n[0] = pi->next_index;
}
-u32
-udp_session_unbind_ip6 (u32 listener_index)
+static void
+udp_connection_unregister_port (u16 lcl_port, u8 is_ip4)
{
- vlib_main_t *vm = vlib_get_main ();
- udp_connection_t *listener;
+ udp_main_t *um = &udp_main;
+ udp_dst_port_info_t *pi;
- listener = udp_listener_get (listener_index);
+ pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
+ if (!pi)
+ return;
- /* deregister the udp_local mapping */
- udp_unregister_dst_port (vm, listener->c_lcl_port, 0 /* is_ipv4 */ );
- return 0;
+ if (!pi->n_connections)
+ {
+ clib_warning ("no connections using port %u", lcl_port);
+ return;
+ }
+
+ if (!clib_atomic_sub_fetch (&pi->n_connections, 1))
+ udp_unregister_dst_port (0, lcl_port, is_ip4);
}
-transport_connection_t *
-udp_session_get_listener (u32 listener_index)
+void
+udp_connection_share_port (u16 lcl_port, u8 is_ip4)
{
- udp_connection_t *us;
+ udp_main_t *um = &udp_main;
+ udp_dst_port_info_t *pi;
- us = udp_listener_get (listener_index);
- return &us->connection;
+ /* Done without a lock but the operation is atomic. Writers to pi hash
+ * table and vector should be guarded by a barrier sync */
+ pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
+ clib_atomic_fetch_add_rel (&pi->n_connections, 1);
}
-u32
-udp_push_header (transport_connection_t * tconn, vlib_buffer_t * b)
+udp_connection_t *
+udp_connection_alloc (u32 thread_index)
{
- udp_connection_t *us;
- u8 *data;
- udp_header_t *udp;
+ udp_main_t *um = &udp_main;
+ udp_connection_t *uc;
+ u32 will_expand = 0;
+ pool_get_aligned_will_expand (um->connections[thread_index], will_expand,
+ CLIB_CACHE_LINE_BYTES);
- us = (udp_connection_t *) tconn;
-
- if (tconn->is_ip4)
+ if (PREDICT_FALSE (will_expand))
{
- ip4_header_t *ip;
-
- data = vlib_buffer_get_current (b);
- udp = (udp_header_t *) (data - sizeof (udp_header_t));
- ip = (ip4_header_t *) ((u8 *) udp - sizeof (ip4_header_t));
-
- /* Build packet header, swap rx key src + dst fields */
- ip->src_address.as_u32 = us->c_lcl_ip4.as_u32;
- ip->dst_address.as_u32 = us->c_rmt_ip4.as_u32;
- ip->ip_version_and_header_length = 0x45;
- ip->ttl = 254;
- ip->protocol = IP_PROTOCOL_UDP;
- ip->length = clib_host_to_net_u16 (b->current_length + sizeof (*udp));
- ip->checksum = ip4_header_checksum (ip);
-
- udp->src_port = us->c_lcl_port;
- udp->dst_port = us->c_rmt_port;
- udp->length = clib_host_to_net_u16 (b->current_length);
- udp->checksum = 0;
-
- b->current_length = sizeof (*ip) + sizeof (*udp);
- return SESSION_QUEUE_NEXT_IP4_LOOKUP;
+ clib_spinlock_lock_if_init (&udp_main.peekers_write_locks
+ [thread_index]);
+ pool_get_aligned (udp_main.connections[thread_index], uc,
+ CLIB_CACHE_LINE_BYTES);
+ clib_spinlock_unlock_if_init (&udp_main.peekers_write_locks
+ [thread_index]);
}
else
{
- vlib_main_t *vm = vlib_get_main ();
- ip6_header_t *ip;
- u16 payload_length;
- int bogus = ~0;
+ pool_get_aligned (um->connections[thread_index], uc,
+ CLIB_CACHE_LINE_BYTES);
+ }
+ clib_memset (uc, 0, sizeof (*uc));
+ uc->c_c_index = uc - um->connections[thread_index];
+ uc->c_thread_index = thread_index;
+ uc->c_proto = TRANSPORT_PROTO_UDP;
+ clib_spinlock_init (&uc->rx_lock);
+ return uc;
+}
- data = vlib_buffer_get_current (b);
- udp = (udp_header_t *) (data - sizeof (udp_header_t));
- ip = (ip6_header_t *) ((u8 *) udp - sizeof (ip6_header_t));
+void
+udp_connection_free (udp_connection_t * uc)
+{
+ u32 thread_index = uc->c_thread_index;
+ if (CLIB_DEBUG)
+ clib_memset (uc, 0xFA, sizeof (*uc));
+ pool_put (udp_main.connections[thread_index], uc);
+}
- /* Build packet header, swap rx key src + dst fields */
- clib_memcpy (&ip->src_address, &us->c_lcl_ip6, sizeof (ip6_address_t));
- clib_memcpy (&ip->dst_address, &us->c_rmt_ip6, sizeof (ip6_address_t));
+static void
+udp_connection_cleanup (udp_connection_t * uc)
+{
+ transport_endpoint_cleanup (TRANSPORT_PROTO_UDP, &uc->c_lcl_ip,
+ uc->c_lcl_port);
+ udp_connection_unregister_port (clib_net_to_host_u16 (uc->c_lcl_port),
+ uc->c_is_ip4);
+ udp_connection_free (uc);
+}
- ip->ip_version_traffic_class_and_flow_label =
- clib_host_to_net_u32 (0x6 << 28);
+void
+udp_connection_delete (udp_connection_t * uc)
+{
+ session_transport_delete_notify (&uc->connection);
+ udp_connection_cleanup (uc);
+}
- ip->hop_limit = 0xff;
- ip->protocol = IP_PROTOCOL_UDP;
+static u8
+udp_connection_port_used_extern (u16 lcl_port, u8 is_ip4)
+{
+ udp_main_t *um = vnet_get_udp_main ();
+ udp_dst_port_info_t *pi;
- payload_length = vlib_buffer_length_in_chain (vm, b);
- payload_length -= sizeof (*ip);
+ pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
+ return (pi && !pi->n_connections
+ && udp_is_valid_dst_port (lcl_port, is_ip4));
+}
- ip->payload_length = clib_host_to_net_u16 (payload_length);
+static u16
+udp_default_mtu (udp_main_t * um, u8 is_ip4)
+{
+ u16 ip_hlen = is_ip4 ? sizeof (ip4_header_t) : sizeof (ip6_header_t);
+ return (um->default_mtu - sizeof (udp_header_t) - ip_hlen);
+}
- udp->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip, &bogus);
- ASSERT (!bogus);
+static u32
+udp_session_bind (u32 session_index, transport_endpoint_t * lcl)
+{
+ udp_main_t *um = vnet_get_udp_main ();
+ vlib_main_t *vm = vlib_get_main ();
+ transport_endpoint_cfg_t *lcl_ext;
+ udp_connection_t *listener;
+ u16 lcl_port_ho;
+ void *iface_ip;
- udp->src_port = us->c_lcl_port;
- udp->dst_port = us->c_rmt_port;
- udp->length = clib_host_to_net_u16 (b->current_length);
- udp->checksum = 0;
+ lcl_port_ho = clib_net_to_host_u16 (lcl->port);
- b->current_length = sizeof (*ip) + sizeof (*udp);
+ if (udp_connection_port_used_extern (lcl_port_ho, lcl->is_ip4))
+ {
+ clib_warning ("port already used");
+ return SESSION_E_PORTINUSE;
+ }
- return SESSION_QUEUE_NEXT_IP6_LOOKUP;
+ pool_get (um->listener_pool, listener);
+ clib_memset (listener, 0, sizeof (udp_connection_t));
+
+ listener->c_lcl_port = lcl->port;
+ listener->c_c_index = listener - um->listener_pool;
+
+ /* If we are provided a sw_if_index, bind using one of its ips */
+ if (ip_is_zero (&lcl->ip, 1) && lcl->sw_if_index != ENDPOINT_INVALID_INDEX)
+ {
+ if ((iface_ip = ip_interface_get_first_ip (lcl->sw_if_index,
+ lcl->is_ip4)))
+ ip_set (&lcl->ip, iface_ip, lcl->is_ip4);
}
+ ip_copy (&listener->c_lcl_ip, &lcl->ip, lcl->is_ip4);
+ listener->c_is_ip4 = lcl->is_ip4;
+ listener->c_proto = TRANSPORT_PROTO_UDP;
+ listener->c_s_index = session_index;
+ listener->c_fib_index = lcl->fib_index;
+ listener->mss = udp_default_mtu (um, listener->c_is_ip4);
+ listener->flags |= UDP_CONN_F_OWNS_PORT | UDP_CONN_F_LISTEN;
+ lcl_ext = (transport_endpoint_cfg_t *) lcl;
+ if (lcl_ext->transport_flags & TRANSPORT_CFG_F_CONNECTED)
+ listener->flags |= UDP_CONN_F_CONNECTED;
+ else
+ listener->c_flags |= TRANSPORT_CONNECTION_F_CLESS;
+ clib_spinlock_init (&listener->rx_lock);
+
+ udp_connection_register_port (vm, lcl_port_ho, lcl->is_ip4);
+ return listener->c_c_index;
}
-transport_connection_t *
-udp_session_get (u32 connection_index, u32 my_thread_index)
+static u32
+udp_session_unbind (u32 listener_index)
{
- udp_uri_main_t *um = vnet_get_udp_main ();
+ udp_main_t *um = &udp_main;
+ udp_connection_t *listener;
+
+ listener = udp_listener_get (listener_index);
+ udp_connection_unregister_port (clib_net_to_host_u16 (listener->c_lcl_port),
+ listener->c_is_ip4);
+ pool_put (um->listener_pool, listener);
+ return 0;
+}
+static transport_connection_t *
+udp_session_get_listener (u32 listener_index)
+{
udp_connection_t *us;
- us =
- pool_elt_at_index (um->udp_sessions[my_thread_index], connection_index);
+
+ us = udp_listener_get (listener_index);
return &us->connection;
}
-void
-udp_session_close (u32 connection_index, u32 my_thread_index)
+static u32
+udp_push_header (transport_connection_t * tc, vlib_buffer_t * b)
+{
+ udp_connection_t *uc;
+ vlib_main_t *vm = vlib_get_main ();
+
+ uc = udp_connection_from_transport (tc);
+
+ vlib_buffer_push_udp (b, uc->c_lcl_port, uc->c_rmt_port, 1);
+ if (tc->is_ip4)
+ vlib_buffer_push_ip4_custom (vm, b, &uc->c_lcl_ip4, &uc->c_rmt_ip4,
+ IP_PROTOCOL_UDP, 1 /* csum offload */ ,
+ 0 /* is_df */ );
+ else
+ vlib_buffer_push_ip6 (vm, b, &uc->c_lcl_ip6, &uc->c_rmt_ip6,
+ IP_PROTOCOL_UDP);
+ vnet_buffer (b)->sw_if_index[VLIB_RX] = 0;
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = uc->c_fib_index;
+ b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+
+ if (PREDICT_FALSE (uc->flags & UDP_CONN_F_CLOSING))
+ {
+ if (!transport_max_tx_dequeue (&uc->connection))
+ udp_connection_delete (uc);
+ }
+
+ return 0;
+}
+
+static transport_connection_t *
+udp_session_get (u32 connection_index, u32 thread_index)
{
- udp_uri_main_t *um = vnet_get_udp_main ();
- pool_put_index (um->udp_sessions[my_thread_index], connection_index);
+ udp_connection_t *uc;
+ uc = udp_connection_get (connection_index, thread_index);
+ if (uc)
+ return &uc->connection;
+ return 0;
}
-u8 *
-format_udp_session_ip4 (u8 * s, va_list * args)
+static void
+udp_session_close (u32 connection_index, u32 thread_index)
{
- u32 uci = va_arg (*args, u32);
- u32 thread_index = va_arg (*args, u32);
- udp_connection_t *u4;
+ udp_connection_t *uc;
- u4 = udp_connection_get (uci, thread_index);
+ uc = udp_connection_get (connection_index, thread_index);
+ if (!uc)
+ return;
- s = format (s, "[%s] %U:%d->%U:%d", "udp", format_ip4_address,
- &u4->c_lcl_ip4, clib_net_to_host_u16 (u4->c_lcl_port),
- format_ip4_address, &u4->c_rmt_ip4,
- clib_net_to_host_u16 (u4->c_rmt_port));
- return s;
+ if (!transport_max_tx_dequeue (&uc->connection))
+ udp_connection_delete (uc);
+ else
+ uc->flags |= UDP_CONN_F_CLOSING;
}
-u8 *
-format_udp_session_ip6 (u8 * s, va_list * args)
+static void
+udp_session_cleanup (u32 connection_index, u32 thread_index)
{
- u32 uci = va_arg (*args, u32);
- u32 thread_index = va_arg (*args, u32);
- udp_connection_t *tc = udp_connection_get (uci, thread_index);
- s = format (s, "[%s] %U:%d->%U:%d", "udp", format_ip6_address,
- &tc->c_lcl_ip6, clib_net_to_host_u16 (tc->c_lcl_port),
- format_ip6_address, &tc->c_rmt_ip6,
- clib_net_to_host_u16 (tc->c_rmt_port));
- return s;
+ udp_connection_t *uc;
+ uc = udp_connection_get (connection_index, thread_index);
+ if (!uc)
+ return;
+ if (uc->flags & UDP_CONN_F_MIGRATED)
+ udp_connection_free (uc);
+ else
+ udp_connection_cleanup (uc);
}
-u8 *
-format_udp_listener_session_ip4 (u8 * s, va_list * args)
+static int
+udp_session_send_params (transport_connection_t * tconn,
+ transport_send_params_t * sp)
{
- u32 tci = va_arg (*args, u32);
- udp_connection_t *tc = udp_listener_get (tci);
- s = format (s, "[%s] %U:%d->%U:%d", "udp", format_ip4_address,
- &tc->c_lcl_ip4, clib_net_to_host_u16 (tc->c_lcl_port),
- format_ip4_address, &tc->c_rmt_ip4,
- clib_net_to_host_u16 (tc->c_rmt_port));
- return s;
+ udp_connection_t *uc;
+
+ uc = udp_connection_from_transport (tconn);
+
+ /* No constraint on TX window */
+ sp->snd_space = ~0;
+ /* TODO figure out MTU of output interface */
+ sp->snd_mss = uc->mss;
+ sp->tx_offset = 0;
+ sp->flags = 0;
+ return 0;
}
-u8 *
-format_udp_listener_session_ip6 (u8 * s, va_list * args)
+static int
+udp_open_connection (transport_endpoint_cfg_t * rmt)
{
- u32 tci = va_arg (*args, u32);
- udp_connection_t *tc = udp_listener_get (tci);
- s = format (s, "[%s] %U:%d->%U:%d", "udp", format_ip6_address,
- &tc->c_lcl_ip6, clib_net_to_host_u16 (tc->c_lcl_port),
- format_ip6_address, &tc->c_rmt_ip6,
- clib_net_to_host_u16 (tc->c_rmt_port));
- return s;
+ vlib_main_t *vm = vlib_get_main ();
+ u32 thread_index = vm->thread_index;
+ udp_main_t *um = &udp_main;
+ ip46_address_t lcl_addr;
+ udp_connection_t *uc;
+ u16 lcl_port;
+ int rv;
+
+ rv = transport_alloc_local_endpoint (TRANSPORT_PROTO_UDP, rmt, &lcl_addr,
+ &lcl_port);
+ if (rv)
+ {
+ if (rv != SESSION_E_PORTINUSE)
+ return rv;
+
+ if (udp_connection_port_used_extern (lcl_port, rmt->is_ip4))
+ return SESSION_E_PORTINUSE;
+
+ /* If port in use, check if 5-tuple is also in use */
+ if (session_lookup_connection (rmt->fib_index, &lcl_addr, &rmt->ip,
+ lcl_port, rmt->port, TRANSPORT_PROTO_UDP,
+ rmt->is_ip4))
+ return SESSION_E_PORTINUSE;
+
+ /* 5-tuple is available so increase lcl endpoint refcount and proceed
+ * with connection allocation */
+ transport_share_local_endpoint (TRANSPORT_PROTO_UDP, &lcl_addr,
+ lcl_port);
+ goto conn_alloc;
+ }
+
+ if (udp_is_valid_dst_port (lcl_port, rmt->is_ip4))
+ {
+ /* If specific source port was requested abort */
+ if (rmt->peer.port)
+ return SESSION_E_PORTINUSE;
+
+ /* Try to find a port that's not used */
+ while (udp_is_valid_dst_port (lcl_port, rmt->is_ip4))
+ {
+ lcl_port = transport_alloc_local_port (TRANSPORT_PROTO_UDP,
+ &lcl_addr);
+ if (lcl_port < 1)
+ return SESSION_E_PORTINUSE;
+ }
+ }
+
+conn_alloc:
+
+ udp_connection_register_port (vm, lcl_port, rmt->is_ip4);
+
+ /* We don't poll main thread if we have workers */
+ if (vlib_num_workers ())
+ thread_index = 1;
+
+ uc = udp_connection_alloc (thread_index);
+ ip_copy (&uc->c_rmt_ip, &rmt->ip, rmt->is_ip4);
+ ip_copy (&uc->c_lcl_ip, &lcl_addr, rmt->is_ip4);
+ uc->c_rmt_port = rmt->port;
+ uc->c_lcl_port = clib_host_to_net_u16 (lcl_port);
+ uc->c_is_ip4 = rmt->is_ip4;
+ uc->c_proto = TRANSPORT_PROTO_UDP;
+ uc->c_fib_index = rmt->fib_index;
+ uc->mss = rmt->mss ? rmt->mss : udp_default_mtu (um, uc->c_is_ip4);
+ uc->flags |= UDP_CONN_F_OWNS_PORT;
+ if (rmt->transport_flags & TRANSPORT_CFG_F_CONNECTED)
+ uc->flags |= UDP_CONN_F_CONNECTED;
+ else
+ uc->c_flags |= TRANSPORT_CONNECTION_F_CLESS;
+
+ return uc->c_c_index;
}
-u16
-udp_send_mss_uri (transport_connection_t * t)
+static transport_connection_t *
+udp_session_get_half_open (u32 conn_index)
{
- /* TODO figure out MTU of output interface */
- return 400;
+ udp_connection_t *uc;
+ u32 thread_index;
+
+ /* We don't poll main thread if we have workers */
+ thread_index = vlib_num_workers ()? 1 : 0;
+ uc = udp_connection_get (conn_index, thread_index);
+ if (!uc)
+ return 0;
+ return &uc->connection;
}
-u32
-udp_send_space_uri (transport_connection_t * t)
+static u8 *
+format_udp_session (u8 * s, va_list * args)
{
- /* No constraint on TX window */
- return ~0;
+ u32 uci = va_arg (*args, u32);
+ u32 thread_index = va_arg (*args, u32);
+ u32 verbose = va_arg (*args, u32);
+ udp_connection_t *uc;
+
+ uc = udp_connection_get (uci, thread_index);
+ return format (s, "%U", format_udp_connection, uc, verbose);
}
-int
-udp_open_connection (transport_endpoint_t * tep)
+static u8 *
+format_udp_half_open_session (u8 * s, va_list * args)
{
- clib_warning ("Not implemented");
+ u32 __clib_unused tci = va_arg (*args, u32);
+ u32 __clib_unused thread_index = va_arg (*args, u32);
+ clib_warning ("BUG");
return 0;
}
+static u8 *
+format_udp_listener_session (u8 * s, va_list * args)
+{
+ u32 tci = va_arg (*args, u32);
+ u32 __clib_unused thread_index = va_arg (*args, u32);
+ u32 verbose = va_arg (*args, u32);
+ udp_connection_t *uc = udp_listener_get (tci);
+ return format (s, "%U", format_udp_connection, uc, verbose);
+}
+
/* *INDENT-OFF* */
-const static transport_proto_vft_t udp4_proto = {
- .bind = udp_session_bind_ip4,
- .open = udp_open_connection,
- .unbind = udp_session_unbind_ip4,
+static const transport_proto_vft_t udp_proto = {
+ .start_listen = udp_session_bind,
+ .connect = udp_open_connection,
+ .stop_listen = udp_session_unbind,
.push_header = udp_push_header,
.get_connection = udp_session_get,
.get_listener = udp_session_get_listener,
+ .get_half_open = udp_session_get_half_open,
.close = udp_session_close,
- .send_mss = udp_send_mss_uri,
- .send_space = udp_send_space_uri,
- .format_connection = format_udp_session_ip4,
- .format_listener = format_udp_listener_session_ip4
+ .cleanup = udp_session_cleanup,
+ .send_params = udp_session_send_params,
+ .format_connection = format_udp_session,
+ .format_half_open = format_udp_half_open_session,
+ .format_listener = format_udp_listener_session,
+ .transport_options = {
+ .name = "udp",
+ .short_name = "U",
+ .tx_type = TRANSPORT_TX_DGRAM,
+ .service_type = TRANSPORT_SERVICE_CL,
+ },
};
+/* *INDENT-ON* */
+
+int
+udpc_connection_open (transport_endpoint_cfg_t * rmt)
+{
+ udp_connection_t *uc;
+ /* Reproduce the logic of udp_open_connection to find the correct thread */
+ u32 thread_index = vlib_num_workers ()? 1 : vlib_get_main ()->thread_index;
+ u32 uc_index;
+ uc_index = udp_open_connection (rmt);
+ if (uc_index == (u32) ~ 0)
+ return -1;
+ uc = udp_connection_get (uc_index, thread_index);
+ uc->flags |= UDP_CONN_F_CONNECTED;
+ return uc_index;
+}
-const static transport_proto_vft_t udp6_proto = {
- .bind = udp_session_bind_ip6,
- .open = udp_open_connection,
- .unbind = udp_session_unbind_ip6,
+u32
+udpc_connection_listen (u32 session_index, transport_endpoint_t * lcl)
+{
+ udp_connection_t *listener;
+ u32 li_index;
+ li_index = udp_session_bind (session_index, lcl);
+ if (li_index == (u32) ~ 0)
+ return -1;
+ listener = udp_listener_get (li_index);
+ listener->flags |= UDP_CONN_F_CONNECTED;
+ /* Fake udp listener, i.e., make sure session layer adds a udp instead of
+ * udpc listener to the lookup table */
+ ((session_endpoint_cfg_t *) lcl)->transport_proto = TRANSPORT_PROTO_UDP;
+ return li_index;
+}
+
+/* *INDENT-OFF* */
+static const transport_proto_vft_t udpc_proto = {
+ .start_listen = udpc_connection_listen,
+ .stop_listen = udp_session_unbind,
+ .connect = udpc_connection_open,
.push_header = udp_push_header,
.get_connection = udp_session_get,
.get_listener = udp_session_get_listener,
+ .get_half_open = udp_session_get_half_open,
.close = udp_session_close,
- .send_mss = udp_send_mss_uri,
- .send_space = udp_send_space_uri,
- .format_connection = format_udp_session_ip6,
- .format_listener = format_udp_listener_session_ip6
+ .cleanup = udp_session_cleanup,
+ .send_params = udp_session_send_params,
+ .format_connection = format_udp_session,
+ .format_half_open = format_udp_half_open_session,
+ .format_listener = format_udp_listener_session,
+ .transport_options = {
+ .name = "udpc",
+ .short_name = "U",
+ .tx_type = TRANSPORT_TX_DGRAM,
+ .service_type = TRANSPORT_SERVICE_VC,
+ .half_open_has_fifos = 1
+ },
};
/* *INDENT-ON* */
static clib_error_t *
udp_init (vlib_main_t * vm)
{
- udp_uri_main_t *um = vnet_get_udp_main ();
+ udp_main_t *um = vnet_get_udp_main ();
ip_main_t *im = &ip_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
u32 num_threads;
- clib_error_t *error = 0;
ip_protocol_info_t *pi;
-
- um->vlib_main = vm;
- um->vnet_main = vnet_get_main ();
-
- if ((error = vlib_call_init_function (vm, ip_main_init)))
- return error;
- if ((error = vlib_call_init_function (vm, ip4_lookup_init)))
- return error;
- if ((error = vlib_call_init_function (vm, ip6_lookup_init)))
- return error;
+ int i;
/*
* Registrations
pi->format_header = format_udp_header;
pi->unformat_pg_edit = unformat_pg_udp_header;
-
/* Register as transport with URI */
- session_register_transport (TRANSPORT_PROTO_UDP, 1, &udp4_proto);
- session_register_transport (TRANSPORT_PROTO_UDP, 0, &udp6_proto);
+ transport_register_protocol (TRANSPORT_PROTO_UDP, &udp_proto,
+ FIB_PROTOCOL_IP4, ip4_lookup_node.index);
+ transport_register_protocol (TRANSPORT_PROTO_UDP, &udp_proto,
+ FIB_PROTOCOL_IP6, ip6_lookup_node.index);
+ transport_register_protocol (TRANSPORT_PROTO_UDPC, &udpc_proto,
+ FIB_PROTOCOL_IP4, ip4_lookup_node.index);
+ transport_register_protocol (TRANSPORT_PROTO_UDPC, &udpc_proto,
+ FIB_PROTOCOL_IP6, ip6_lookup_node.index);
/*
* Initialize data structures
*/
num_threads = 1 /* main thread */ + tm->n_threads;
- vec_validate (um->udp_sessions, num_threads - 1);
-
- return error;
+ vec_validate (um->connections, num_threads - 1);
+ vec_validate (um->connection_peekers, num_threads - 1);
+ vec_validate (um->peekers_readers_locks, num_threads - 1);
+ vec_validate (um->peekers_write_locks, num_threads - 1);
+
+ if (num_threads > 1)
+ for (i = 0; i < num_threads; i++)
+ {
+ clib_spinlock_init (&um->peekers_readers_locks[i]);
+ clib_spinlock_init (&um->peekers_write_locks[i]);
+ }
+
+ um->local_to_input_edge[UDP_IP4] =
+ vlib_node_add_next (vm, udp4_local_node.index, udp4_input_node.index);
+ um->local_to_input_edge[UDP_IP6] =
+ vlib_node_add_next (vm, udp6_local_node.index, udp6_input_node.index);
+
+ um->default_mtu = 1500;
+ return 0;
}
-VLIB_INIT_FUNCTION (udp_init);
+/* *INDENT-OFF* */
+VLIB_INIT_FUNCTION (udp_init) =
+{
+ .runs_after = VLIB_INITS("ip_main_init", "ip4_lookup_init",
+ "ip6_lookup_init"),
+};
+/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff