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_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
static void
udp_connection_cleanup (udp_connection_t * uc)
{
- /* Unregister port from udp_local only if refcount went to zero */
- if (!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);
+ 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);
}
}
always_inline u32
-udp_push_one_header (vlib_main_t *vm, udp_connection_t *uc, vlib_buffer_t *b)
+udp_push_one_header (vlib_main_t *vm, udp_connection_t *uc, vlib_buffer_t *b,
+ u8 is_cless)
{
- vlib_buffer_push_udp (b, uc->c_lcl_port, uc->c_rmt_port,
- udp_csum_offload (uc));
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;
}
-static u32
-udp_push_header (transport_connection_t *tc, vlib_buffer_t **bs, u32 n_bufs)
+always_inline void
+udp_push_header_batch (udp_connection_t *uc, vlib_buffer_t **bs, u32 n_bufs,
+ u8 is_cless)
{
vlib_main_t *vm = vlib_get_main ();
- udp_connection_t *uc;
-
- uc = udp_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]);
- udp_push_one_header (vm, uc, bs[1]);
+ 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;
if (n_bufs > 1)
vlib_prefetch_buffer_header (bs[1], STORE);
- udp_push_one_header (vm, uc, bs[0]);
+ udp_push_one_header (vm, uc, bs[0], is_cless);
n_bufs -= 1;
bs += 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))
{
- if (!transport_max_tx_dequeue (&uc->connection))
+ if (!transport_tx_fifo_has_dgram (&uc->connection))
udp_connection_program_cleanup (uc);
}
if (!uc || (uc->flags & UDP_CONN_F_MIGRATED))
return;
- if (!transport_max_tx_dequeue (&uc->connection))
+ if (!transport_tx_fifo_has_dgram (&uc->connection))
udp_connection_program_cleanup (uc);
else
uc->flags |= UDP_CONN_F_CLOSING;
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;
- }
+ return rv;
- if (udp_is_valid_dst_port (lcl_port, rmt->is_ip4))
+ if (udp_connection_port_used_extern (clib_net_to_host_u16 (lcl_port),
+ rmt->is_ip4))
{
/* If specific source port was requested abort */
if (rmt->peer.port)
- return SESSION_E_PORTINUSE;
+ {
+ 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_is_valid_dst_port (lcl_port, rmt->is_ip4))
+ while (udp_connection_port_used_extern (clib_net_to_host_u16 (lcl_port),
+ rmt->is_ip4))
{
- lcl_port = transport_alloc_local_port (TRANSPORT_PROTO_UDP,
- &lcl_addr);
+ 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;
}
}
-conn_alloc:
-
/* We don't poll main thread if we have workers */
thread_index = transport_cl_thread ();
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;
}
Code Review / vpp.git / blobdiff