local_endpoint_t *local_endpoints;
u32 *lcl_endpts_freelist;
u32 port_allocator_seed;
+ u16 port_allocator_min_src_port;
+ u16 port_allocator_max_src_port;
u8 lcl_endpts_cleanup_pending;
clib_spinlock_t local_endpoints_lock;
} transport_main_t;
return s;
}
+const char *transport_flags_str[] = {
+#define _(sym, str) str,
+ foreach_transport_connection_flag
+#undef _
+};
+
+u8 *
+format_transport_flags (u8 *s, va_list *args)
+{
+ transport_connection_flags_t flags;
+ int i, last = -1;
+
+ flags = va_arg (*args, transport_connection_flags_t);
+
+ for (i = 0; i < TRANSPORT_CONNECTION_N_FLAGS; i++)
+ if (flags & (1 << i))
+ last = i;
+
+ for (i = 0; i < last; i++)
+ {
+ if (flags & (1 << i))
+ s = format (s, "%s, ", transport_flags_str[i]);
+ }
+ if (last >= 0)
+ s = format (s, "%s", transport_flags_str[last]);
+
+ return s;
+}
+
u8 *
format_transport_connection (u8 * s, va_list * args)
{
if (transport_connection_is_tx_paced (tc))
s = format (s, "%Upacer: %U\n", format_white_space, indent,
format_transport_pacer, &tc->pacer, tc->thread_index);
- s = format (s, "%Utransport: flags 0x%x\n", format_white_space, indent,
- tc->flags);
+ s = format (s, "%Utransport: flags: %U\n", format_white_space, indent,
+ format_transport_flags, tc->flags);
}
return s;
}
format_transport_half_open_connection (u8 * s, va_list * args)
{
u32 transport_proto = va_arg (*args, u32);
- u32 ho_index = va_arg (*args, u32);
transport_proto_vft_t *tp_vft;
tp_vft = transport_protocol_get_vft (transport_proto);
if (!tp_vft)
return s;
- s = format (s, "%U", tp_vft->format_half_open, ho_index);
+ s = (tp_vft->format_half_open) (s, args);
return s;
}
u32 lepi;
lepi = transport_endpoint_lookup (&tm->local_endpoints_table, proto, lcl_ip,
- clib_net_to_host_u16 (port));
+ port);
if (lepi == ENDPOINT_INVALID_INDEX)
return -1;
- lep = pool_elt_at_index (tm->local_endpoints, lepi);
+ /* First worker may be cleaning up ports so avoid touching free bitmap */
+ lep = &tm->local_endpoints[lepi];
+ ASSERT (lep->refcnt >= 1);
/* Local endpoint no longer in use, program cleanup */
if (!clib_atomic_sub_fetch (&lep->refcnt, 1))
* used to allocate and free ports. So, pool has only one writer and
* potentially many readers. Listeners are allocated with barrier */
lepi = transport_endpoint_lookup (&tm->local_endpoints_table, proto, lcl_ip,
- clib_net_to_host_u16 (port));
+ port);
if (lepi != ENDPOINT_INVALID_INDEX)
{
lep = pool_elt_at_index (tm->local_endpoints, lepi);
/**
* Allocate local port and add if successful add entry to local endpoint
* table to mark the pair as used.
+ *
+ * @return port in net order or -1 if port cannot be allocated
*/
int
transport_alloc_local_port (u8 proto, ip46_address_t *lcl_addr,
transport_endpoint_cfg_t *rmt)
{
- u16 min = 1024, max = 65535; /* XXX configurable ? */
transport_main_t *tm = &tp_main;
+ u16 min = tm->port_allocator_min_src_port;
+ u16 max = tm->port_allocator_max_src_port;
int tries, limit;
limit = max - min;
/* Only support active opens from one of ctrl threads */
ASSERT (vlib_get_thread_index () <= transport_cl_thread ());
- /* Cleanup freelist if need be */
- if (vec_len (tm->lcl_endpts_freelist))
- transport_cleanup_freelist ();
-
/* Search for first free slot */
for (tries = 0; tries < limit; tries++)
{
{
port = random_u32 (&tm->port_allocator_seed) & PORT_MASK;
if (PREDICT_TRUE (port >= min && port < max))
- break;
+ {
+ port = clib_host_to_net_u16 (port);
+ break;
+ }
}
if (!transport_endpoint_mark_used (proto, lcl_addr, port))
ip46_address_t * lcl_addr, u16 * lcl_port)
{
transport_endpoint_t *rmt = (transport_endpoint_t *) rmt_cfg;
+ transport_main_t *tm = &tp_main;
session_error_t error;
int port;
sizeof (rmt_cfg->peer.ip));
}
+ /* Cleanup freelist if need be */
+ if (vec_len (tm->lcl_endpts_freelist))
+ transport_cleanup_freelist ();
+
/*
* Allocate source port
*/
}
else
{
- port = clib_net_to_host_u16 (rmt_cfg->peer.port);
- *lcl_port = port;
+ *lcl_port = rmt_cfg->peer.port;
+
+ if (!transport_endpoint_mark_used (proto, lcl_addr, rmt_cfg->peer.port))
+ return 0;
+
+ /* IP:port pair already in use, check if 6-tuple available */
+ if (session_lookup_connection (rmt->fib_index, lcl_addr, &rmt->ip,
+ rmt_cfg->peer.port, rmt->port, proto,
+ rmt->is_ip4))
+ return SESSION_E_PORTINUSE;
+
+ /* 6-tuple is available so increment lcl endpoint refcount */
+ transport_share_local_endpoint (proto, lcl_addr, rmt_cfg->peer.port);
- return transport_endpoint_mark_used (proto, lcl_addr, port);
+ return 0;
}
return 0;
/* Initialize [port-allocator] random number seed */
tm->port_allocator_seed = (u32) clib_cpu_time_now ();
+ tm->port_allocator_min_src_port = smm->port_allocator_min_src_port;
+ tm->port_allocator_max_src_port = smm->port_allocator_max_src_port;
clib_bihash_init_24_8 (&tm->local_endpoints_table, "local endpoints table",
smm->local_endpoints_table_buckets,