/*
- * 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 <vnet/ip/ip4_inlines.h>
+#include <vnet/ip/ip6_inlines.h>
+#include <vppinfra/sparse_vec.h>
+
+udp_main_t udp_main;
+
+static void
+udp_connection_register_port (u16 lcl_port, u8 is_ip4)
+{
+ udp_main_t *um = &udp_main;
+ u16 *n;
+
+ /* Setup udp protocol -> next index sparse vector mapping. Do not setup
+ * udp_dst_port_info_t as that is used to distinguish between external
+ * and transport consumed ports */
+
+ if (is_ip4)
+ n = sparse_vec_validate (um->next_by_dst_port4, lcl_port);
+ else
+ n = sparse_vec_validate (um->next_by_dst_port6, lcl_port);
+
+ n[0] = um->local_to_input_edge[is_ip4];
+
+ __atomic_add_fetch (&um->transport_ports_refcnt[is_ip4][lcl_port], 1,
+ __ATOMIC_RELAXED);
+}
+
+void
+udp_connection_share_port (u16 lcl_port, u8 is_ip4)
+{
+ udp_main_t *um = &udp_main;
+ __atomic_add_fetch (&um->transport_ports_refcnt[is_ip4][lcl_port], 1,
+ __ATOMIC_RELAXED);
+}
+
+static void
+udp_connection_unregister_port (u16 lcl_port, u8 is_ip4)
+{
+ udp_main_t *um = &udp_main;
+ u16 *n;
+
+ /* Needed because listeners are not tracked as local endpoints */
+ if (__atomic_sub_fetch (&um->transport_ports_refcnt[is_ip4][lcl_port], 1,
+ __ATOMIC_RELAXED))
+ return;
+
+ if (is_ip4)
+ n = sparse_vec_validate (um->next_by_dst_port4, lcl_port);
+ else
+ n = sparse_vec_validate (um->next_by_dst_port6, lcl_port);
+
+ n[0] = UDP_NO_NODE_SET;
+}
udp_connection_t *
udp_connection_alloc (u32 thread_index)
{
- udp_main_t *um = &udp_main;
+ udp_worker_t *wrk = udp_worker_get (thread_index);
udp_connection_t *uc;
- u32 will_expand = 0;
- pool_get_aligned_will_expand (um->connections[thread_index], will_expand,
- CLIB_CACHE_LINE_BYTES);
- if (PREDICT_FALSE (will_expand))
- {
- 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
- {
- pool_get_aligned (um->connections[thread_index], uc,
- CLIB_CACHE_LINE_BYTES);
- }
+ pool_get_aligned_safe (wrk->connections, uc, CLIB_CACHE_LINE_BYTES);
+
clib_memset (uc, 0, sizeof (*uc));
- uc->c_c_index = uc - um->connections[thread_index];
+ uc->c_c_index = uc - wrk->connections;
uc->c_thread_index = thread_index;
uc->c_proto = TRANSPORT_PROTO_UDP;
- clib_spinlock_init (&uc->rx_lock);
return uc;
}
void
udp_connection_free (udp_connection_t * uc)
{
- pool_put (udp_main.connections[uc->c_thread_index], uc);
+ udp_worker_t *wrk = udp_worker_get (uc->c_thread_index);
+
+ clib_spinlock_free (&uc->rx_lock);
if (CLIB_DEBUG)
clib_memset (uc, 0xFA, sizeof (*uc));
+ pool_put (wrk->connections, uc);
+}
+
+static void
+udp_connection_cleanup (udp_connection_t * uc)
+{
+ transport_release_local_endpoint (TRANSPORT_PROTO_UDP, &uc->c_lcl_ip,
+ uc->c_lcl_port);
+ udp_connection_unregister_port (uc->c_lcl_port, uc->c_is_ip4);
+ udp_connection_free (uc);
+}
+
+void
+udp_connection_delete (udp_connection_t * uc)
+{
+ session_transport_delete_notify (&uc->connection);
+ udp_connection_cleanup (uc);
+}
+
+static void
+udp_handle_cleanups (void *args)
+{
+ u32 thread_index = (u32) pointer_to_uword (args);
+ udp_connection_t *uc;
+ udp_worker_t *wrk;
+ u32 *uc_index;
+
+ wrk = udp_worker_get (thread_index);
+ vec_foreach (uc_index, wrk->pending_cleanups)
+ {
+ uc = udp_connection_get (*uc_index, thread_index);
+ udp_connection_delete (uc);
+ }
+ vec_reset_length (wrk->pending_cleanups);
}
-u32
-udp_session_bind (u32 session_index, transport_endpoint_t * lcl)
+static void
+udp_connection_program_cleanup (udp_connection_t *uc)
+{
+ uword thread_index = uc->c_thread_index;
+ udp_worker_t *wrk;
+
+ wrk = udp_worker_get (uc->c_thread_index);
+ vec_add1 (wrk->pending_cleanups, uc->c_c_index);
+
+ if (vec_len (wrk->pending_cleanups) == 1)
+ session_send_rpc_evt_to_thread_force (
+ thread_index, udp_handle_cleanups,
+ uword_to_pointer (thread_index, void *));
+}
+
+static u8
+udp_connection_port_used_extern (u16 lcl_port, u8 is_ip4)
{
udp_main_t *um = vnet_get_udp_main ();
- vlib_main_t *vm = vlib_get_main ();
+ udp_dst_port_info_t *pi;
+
+ pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
+ return (pi && udp_is_valid_dst_port (lcl_port, is_ip4));
+}
+
+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);
+}
+
+static u32
+udp_session_bind (u32 session_index, transport_endpoint_cfg_t *lcl)
+{
+ udp_main_t *um = vnet_get_udp_main ();
+ transport_endpoint_cfg_t *lcl_ext;
udp_connection_t *listener;
- u32 node_index;
void *iface_ip;
- udp_dst_port_info_t *pi;
- pi = udp_get_dst_port_info (um, lcl->port, lcl->is_ip4);
- if (pi)
- return -1;
+ if (udp_connection_port_used_extern (clib_net_to_host_u16 (lcl->port),
+ lcl->is_ip4))
+ {
+ clib_warning ("port already used");
+ return SESSION_E_PORTINUSE;
+ }
pool_get (um->listener_pool, listener);
clib_memset (listener, 0, sizeof (udp_connection_t));
listener->c_proto = TRANSPORT_PROTO_UDP;
listener->c_s_index = session_index;
listener->c_fib_index = lcl->fib_index;
+ listener->mss =
+ lcl->mss ? lcl->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);
+ if (!um->csum_offload)
+ listener->cfg_flags |= UDP_CFG_F_NO_CSUM_OFFLOAD;
- node_index = lcl->is_ip4 ? udp4_input_node.index : udp6_input_node.index;
- udp_register_dst_port (vm, clib_net_to_host_u16 (lcl->port), node_index,
- 1 /* is_ipv4 */ );
+ udp_connection_register_port (listener->c_lcl_port, lcl->is_ip4);
return listener->c_c_index;
}
-u32
+static u32
udp_session_unbind (u32 listener_index)
{
- vlib_main_t *vm = vlib_get_main ();
-
+ udp_main_t *um = &udp_main;
udp_connection_t *listener;
+
listener = udp_listener_get (listener_index);
- udp_unregister_dst_port (vm, clib_net_to_host_u16 (listener->c_lcl_port),
- listener->c_is_ip4);
+ udp_connection_unregister_port (listener->c_lcl_port, listener->c_is_ip4);
+ clib_spinlock_free (&listener->rx_lock);
+ pool_put (um->listener_pool, listener);
return 0;
}
-transport_connection_t *
+static transport_connection_t *
udp_session_get_listener (u32 listener_index)
{
udp_connection_t *us;
return &us->connection;
}
-u32
-udp_push_header (transport_connection_t * tc, vlib_buffer_t * b)
+always_inline u32
+udp_push_one_header (vlib_main_t *vm, udp_connection_t *uc, vlib_buffer_t *b,
+ u8 is_cless)
+{
+ b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+ /* reuse tcp medatada for now */
+ vnet_buffer (b)->tcp.connection_index = uc->c_c_index;
+
+ if (!is_cless)
+ {
+ vlib_buffer_push_udp (b, uc->c_lcl_port, uc->c_rmt_port,
+ udp_csum_offload (uc));
+
+ if (uc->c_is_ip4)
+ vlib_buffer_push_ip4_custom (vm, b, &uc->c_lcl_ip4, &uc->c_rmt_ip4,
+ IP_PROTOCOL_UDP, udp_csum_offload (uc),
+ 0 /* is_df */, uc->c_dscp);
+ else
+ vlib_buffer_push_ip6 (vm, b, &uc->c_lcl_ip6, &uc->c_rmt_ip6,
+ IP_PROTOCOL_UDP);
+
+ vnet_buffer (b)->tcp.flags = 0;
+ }
+ else
+ {
+ u8 *data = vlib_buffer_get_current (b);
+ session_dgram_hdr_t hdr;
+
+ hdr = *(session_dgram_hdr_t *) (data - sizeof (hdr));
+
+ /* Local port assumed to be bound, not overwriting it */
+ vlib_buffer_push_udp (b, uc->c_lcl_port, hdr.rmt_port,
+ udp_csum_offload (uc));
+
+ if (uc->c_is_ip4)
+ vlib_buffer_push_ip4_custom (vm, b, &hdr.lcl_ip.ip4, &hdr.rmt_ip.ip4,
+ IP_PROTOCOL_UDP, udp_csum_offload (uc),
+ 0 /* is_df */, uc->c_dscp);
+ else
+ vlib_buffer_push_ip6 (vm, b, &hdr.lcl_ip.ip6, &hdr.rmt_ip.ip6,
+ IP_PROTOCOL_UDP);
+
+ /* Not connected udp session. Mark buffer for custom handling in
+ * udp_output */
+ vnet_buffer (b)->tcp.flags |= UDP_CONN_F_LISTEN;
+ }
+
+ return 0;
+}
+
+always_inline void
+udp_push_header_batch (udp_connection_t *uc, vlib_buffer_t **bs, u32 n_bufs,
+ u8 is_cless)
{
- udp_connection_t *uc;
vlib_main_t *vm = vlib_get_main ();
- uc = udp_get_connection_from_transport (tc);
+ while (n_bufs >= 4)
+ {
+ vlib_prefetch_buffer_header (bs[2], STORE);
+ vlib_prefetch_buffer_header (bs[3], STORE);
+
+ udp_push_one_header (vm, uc, bs[0], is_cless);
+ udp_push_one_header (vm, uc, bs[1], is_cless);
+
+ n_bufs -= 2;
+ bs += 2;
+ }
+ while (n_bufs)
+ {
+ if (n_bufs > 1)
+ vlib_prefetch_buffer_header (bs[1], STORE);
+
+ udp_push_one_header (vm, uc, bs[0], is_cless);
+
+ n_bufs -= 1;
+ bs += 1;
+ }
+}
- vlib_buffer_push_udp (b, uc->c_lcl_port, uc->c_rmt_port, 1);
- if (tc->is_ip4)
- vlib_buffer_push_ip4 (vm, b, &uc->c_lcl_ip4, &uc->c_rmt_ip4,
- IP_PROTOCOL_UDP, 1);
+static u32
+udp_push_header (transport_connection_t *tc, vlib_buffer_t **bs, u32 n_bufs)
+{
+ udp_connection_t *uc;
+
+ uc = udp_connection_from_transport (tc);
+ if (uc->flags & UDP_CONN_F_CONNECTED)
+ udp_push_header_batch (uc, bs, n_bufs, 0 /* is_cless */);
else
+ udp_push_header_batch (uc, bs, n_bufs, 1 /* is_cless */);
+
+ if (PREDICT_FALSE (uc->flags & UDP_CONN_F_CLOSING))
{
- ip6_header_t *ih;
- ih = vlib_buffer_push_ip6 (vm, b, &uc->c_lcl_ip6, &uc->c_rmt_ip6,
- IP_PROTOCOL_UDP);
- vnet_buffer (b)->l3_hdr_offset = (u8 *) ih - b->data;
+ if (!transport_tx_fifo_has_dgram (&uc->connection))
+ udp_connection_program_cleanup (uc);
}
- 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;
return 0;
}
-transport_connection_t *
+static transport_connection_t *
udp_session_get (u32 connection_index, u32 thread_index)
{
udp_connection_t *uc;
return 0;
}
-void
+static void
udp_session_close (u32 connection_index, u32 thread_index)
{
- vlib_main_t *vm = vlib_get_main ();
udp_connection_t *uc;
+
uc = udp_connection_get (connection_index, thread_index);
- if (uc)
- {
- udp_unregister_dst_port (vm, clib_net_to_host_u16 (uc->c_lcl_port),
- uc->c_is_ip4);
- stream_session_delete_notify (&uc->connection);
- udp_connection_free (uc);
- }
+ if (!uc || (uc->flags & UDP_CONN_F_MIGRATED))
+ return;
+
+ if (!transport_tx_fifo_has_dgram (&uc->connection))
+ udp_connection_program_cleanup (uc);
+ else
+ uc->flags |= UDP_CONN_F_CLOSING;
}
-void
+static void
udp_session_cleanup (u32 connection_index, u32 thread_index)
{
udp_connection_t *uc;
uc = udp_connection_get (connection_index, thread_index);
- if (uc)
+ if (!uc)
+ return;
+ if (uc->flags & UDP_CONN_F_MIGRATED)
udp_connection_free (uc);
+ else
+ udp_connection_cleanup (uc);
}
-u8 *
-format_udp_connection_id (u8 * s, va_list * args)
+static int
+udp_session_send_params (transport_connection_t * tconn,
+ transport_send_params_t * sp)
{
- udp_connection_t *uc = va_arg (*args, udp_connection_t *);
- if (!uc)
- return s;
- if (uc->c_is_ip4)
- s = format (s, "[#%d][%s] %U:%d->%U:%d", uc->c_thread_index, "U",
- format_ip4_address, &uc->c_lcl_ip4,
- clib_net_to_host_u16 (uc->c_lcl_port), format_ip4_address,
- &uc->c_rmt_ip4, clib_net_to_host_u16 (uc->c_rmt_port));
- else
- s = format (s, "[#%d][%s] %U:%d->%U:%d", uc->c_thread_index, "U",
- format_ip6_address, &uc->c_lcl_ip6,
- clib_net_to_host_u16 (uc->c_lcl_port), format_ip6_address,
- &uc->c_rmt_ip6, clib_net_to_host_u16 (uc->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_connection (u8 * s, va_list * args)
+static int
+udp_open_connection (transport_endpoint_cfg_t * rmt)
{
- udp_connection_t *uc = va_arg (*args, udp_connection_t *);
- u32 verbose = va_arg (*args, u32);
- if (!uc)
- return s;
- s = format (s, "%-50U", format_udp_connection_id, uc);
- if (verbose)
+ udp_main_t *um = &udp_main;
+ ip46_address_t lcl_addr;
+ udp_connection_t *uc;
+ u32 thread_index;
+ u16 lcl_port;
+ int rv;
+
+ rv = transport_alloc_local_endpoint (TRANSPORT_PROTO_UDP, rmt, &lcl_addr,
+ &lcl_port);
+ if (rv)
+ return rv;
+
+ if (udp_connection_port_used_extern (clib_net_to_host_u16 (lcl_port),
+ rmt->is_ip4))
{
- if (verbose == 1)
- s = format (s, "%-15s\n", "-");
- else
- s = format (s, "\n");
+ /* If specific source port was requested abort */
+ if (rmt->peer.port)
+ {
+ transport_release_local_endpoint (TRANSPORT_PROTO_UDP, &lcl_addr,
+ lcl_port);
+ return SESSION_E_PORTINUSE;
+ }
+
+ /* Try to find a port that's not used */
+ while (udp_connection_port_used_extern (clib_net_to_host_u16 (lcl_port),
+ rmt->is_ip4))
+ {
+ transport_release_local_endpoint (TRANSPORT_PROTO_UDP, &lcl_addr,
+ lcl_port);
+ lcl_port =
+ transport_alloc_local_port (TRANSPORT_PROTO_UDP, &lcl_addr, rmt);
+ if (lcl_port < 1)
+ return SESSION_E_PORTINUSE;
+ }
+ }
+
+ /* We don't poll main thread if we have workers */
+ thread_index = transport_cl_thread ();
+
+ 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->c_dscp = rmt->dscp;
+ uc->mss = rmt->mss ? rmt->mss : udp_default_mtu (um, uc->c_is_ip4);
+ if (rmt->peer.sw_if_index != ENDPOINT_INVALID_INDEX)
+ uc->sw_if_index = rmt->peer.sw_if_index;
+ uc->flags |= UDP_CONN_F_OWNS_PORT;
+ if (rmt->transport_flags & TRANSPORT_CFG_F_CONNECTED)
+ {
+ uc->flags |= UDP_CONN_F_CONNECTED;
+ }
+ else
+ {
+ clib_spinlock_init (&uc->rx_lock);
+ uc->c_flags |= TRANSPORT_CONNECTION_F_CLESS;
}
- return s;
+ if (!um->csum_offload)
+ uc->cfg_flags |= UDP_CFG_F_NO_CSUM_OFFLOAD;
+ uc->next_node_index = rmt->next_node_index;
+ uc->next_node_opaque = rmt->next_node_opaque;
+
+ udp_connection_register_port (uc->c_lcl_port, rmt->is_ip4);
+
+ return uc->c_c_index;
+}
+
+static transport_connection_t *
+udp_session_get_half_open (u32 conn_index)
+{
+ udp_connection_t *uc;
+ u32 thread_index;
+
+ /* We don't poll main thread if we have workers */
+ thread_index = transport_cl_thread ();
+ uc = udp_connection_get (conn_index, thread_index);
+ if (!uc)
+ return 0;
+ return &uc->connection;
}
-u8 *
+static u8 *
format_udp_session (u8 * s, va_list * args)
{
u32 uci = va_arg (*args, u32);
return format (s, "%U", format_udp_connection, uc, verbose);
}
-u8 *
+static u8 *
format_udp_half_open_session (u8 * s, va_list * args)
{
+ u32 __clib_unused tci = va_arg (*args, u32);
+ u32 __clib_unused thread_index = va_arg (*args, u32);
clib_warning ("BUG");
return 0;
}
-u8 *
+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);
-}
-
-u16
-udp_send_mss (transport_connection_t * t)
-{
- /* TODO figure out MTU of output interface */
- return 1460;
-}
-
-u32
-udp_send_space (transport_connection_t * t)
-{
- /* No constraint on TX window */
- return ~0;
+ return format (s, "%U", format_udp_connection, uc, verbose);
}
-int
-udp_open_connection (transport_endpoint_cfg_t * rmt)
+static void
+udp_realloc_ports_sv (u16 **ports_nh_svp)
{
- udp_main_t *um = vnet_get_udp_main ();
- vlib_main_t *vm = vlib_get_main ();
- u32 thread_index = vm->thread_index;
- udp_connection_t *uc;
- ip46_address_t lcl_addr;
- u32 node_index;
- u16 lcl_port;
+ u16 port, port_no, *ports_nh_sv, *mc;
+ u32 *ports = 0, *nh = 0, msum, i;
+ sparse_vec_header_t *h;
+ uword sv_index, *mb;
- if (transport_alloc_local_endpoint (TRANSPORT_PROTO_UDP, rmt, &lcl_addr,
- &lcl_port))
- return -1;
+ ports_nh_sv = *ports_nh_svp;
- while (udp_get_dst_port_info (um, lcl_port, rmt->is_ip4))
+ for (port = 1; port < 65535; port++)
{
- lcl_port = transport_alloc_local_port (TRANSPORT_PROTO_UDP, &lcl_addr);
- if (lcl_port < 1)
+ port_no = clib_host_to_net_u16 (port);
+
+ sv_index = sparse_vec_index (ports_nh_sv, port_no);
+ if (sv_index != SPARSE_VEC_INVALID_INDEX)
{
- clib_warning ("Failed to allocate src port");
- return -1;
+ vec_add1 (ports, port_no);
+ vec_add1 (nh, ports_nh_sv[sv_index]);
}
}
- node_index = rmt->is_ip4 ? udp4_input_node.index : udp6_input_node.index;
- udp_register_dst_port (vm, lcl_port, node_index, 1 /* is_ipv4 */ );
+ sparse_vec_free (ports_nh_sv);
- /* We don't poll main thread if we have workers */
- if (vlib_num_workers ())
- thread_index = 1;
+ ports_nh_sv =
+ sparse_vec_new (/* elt bytes */ sizeof (ports_nh_sv[0]),
+ /* bits in index */ BITS (((udp_header_t *) 0)->dst_port));
- 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;
+ vec_resize (ports_nh_sv, 65535);
- return uc->c_c_index;
-}
+ for (port = 1; port < 65535; port++)
+ ports_nh_sv[port] = UDP_NO_NODE_SET;
-transport_connection_t *
-udp_session_get_half_open (u32 conn_index)
-{
- udp_connection_t *uc;
- u32 thread_index;
+ for (i = 0; i < vec_len (ports); i++)
+ ports_nh_sv[ports[i]] = nh[i];
- /* 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);
- return &uc->connection;
-}
+ h = sparse_vec_header (ports_nh_sv);
+ vec_foreach (mb, h->is_member_bitmap)
+ *mb = (uword) ~0;
-/* *INDENT-OFF* */
-const static transport_proto_vft_t udp_proto = {
- .bind = udp_session_bind,
- .open = udp_open_connection,
- .unbind = 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,
- .cleanup = udp_session_cleanup,
- .send_mss = udp_send_mss,
- .send_space = udp_send_space,
- .format_connection = format_udp_session,
- .format_half_open = format_udp_half_open_session,
- .format_listener = format_udp_listener_session,
- .tx_type = TRANSPORT_TX_DGRAM,
- .service_type = TRANSPORT_SERVICE_CL,
-};
-/* *INDENT-ON* */
+ msum = 0;
+ vec_foreach (mc, h->member_counts)
+ {
+ *mc = msum;
+ msum += msum == 0 ? 63 : 64;
+ }
+ vec_free (ports);
+ vec_free (nh);
-int
-udpc_connection_open (transport_endpoint_cfg_t * rmt)
-{
- udp_connection_t *uc;
- u32 uc_index;
- uc_index = udp_open_connection (rmt);
- uc = udp_connection_get (uc_index, vlib_get_thread_index ());
- uc->is_connected = 1;
- return uc_index;
+ *ports_nh_svp = ports_nh_sv;
}
-u32
-udpc_connection_listen (u32 session_index, transport_endpoint_t * lcl)
+static clib_error_t *
+udp_enable_disable (vlib_main_t *vm, u8 is_en)
{
- udp_connection_t *listener;
- u32 li;
- li = udp_session_bind (session_index, lcl);
- listener = udp_listener_get (li);
- listener->is_connected = 1;
- return li;
+ udp_main_t *um = &udp_main;
+
+ /* Not ideal. The sparse vector used to map ports to next nodes assumes
+ * only a few ports are ever used. When udp transport is enabled this does
+ * not hold and, to make matters worse, ports are consumed in a random
+ * order.
+ *
+ * This can lead to a lot of slow updates to internal data structures
+ * which in turn can slow udp connection allocations until all ports are
+ * eventually consumed.
+ *
+ * Consequently, reallocate sparse vector, preallocate all ports and have
+ * them point to UDP_NO_NODE_SET. We could consider switching the sparse
+ * vector to a preallocated vector but that would increase memory
+ * consumption for vpp deployments that do not rely on host stack.
+ */
+
+ udp_realloc_ports_sv (&um->next_by_dst_port4);
+ udp_realloc_ports_sv (&um->next_by_dst_port6);
+
+ vec_validate (um->transport_ports_refcnt[0], 65535);
+ vec_validate (um->transport_ports_refcnt[1], 65535);
+
+ return 0;
}
-/* *INDENT-OFF* */
-const static transport_proto_vft_t udpc_proto = {
- .bind = udpc_connection_listen,
- .open = udpc_connection_open,
- .unbind = udp_session_unbind,
+static const transport_proto_vft_t udp_proto = {
+ .enable = udp_enable_disable,
+ .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,
.cleanup = udp_session_cleanup,
- .send_mss = udp_send_mss,
- .send_space = udp_send_space,
+ .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,
- .tx_type = TRANSPORT_TX_DEQUEUE,
- .service_type = TRANSPORT_SERVICE_CL,
+ .transport_options = {
+ .name = "udp",
+ .short_name = "U",
+ .tx_type = TRANSPORT_TX_DGRAM,
+ .service_type = TRANSPORT_SERVICE_CL,
+ },
};
-/* *INDENT-ON* */
static clib_error_t *
udp_init (vlib_main_t * vm)
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;
- int i;
-
- 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;
/*
* Registrations
pi->format_header = format_udp_header;
pi->unformat_pg_edit = unformat_pg_udp_header;
- /* Register as transport with URI */
+ /* Register as transport with session layer */
transport_register_protocol (TRANSPORT_PROTO_UDP, &udp_proto,
- FIB_PROTOCOL_IP4, ip4_lookup_node.index);
+ FIB_PROTOCOL_IP4, udp4_output_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);
+ FIB_PROTOCOL_IP6, udp6_output_node.index);
/*
* Initialize data structures
*/
num_threads = 1 /* main thread */ + tm->n_threads;
- 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]);
- }
- return error;
+ vec_validate (um->wrk, num_threads - 1);
+
+ 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;
+ um->csum_offload = 1;
+ 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