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authorFlorin Coras <fcoras@cisco.com>2023-01-30 11:18:36 -0800
committerDave Barach <vpp@barachs.net>2023-02-28 22:50:36 +0000
commit3d6156fed8be0c1e3ffe081be16f82be5be603fd (patch)
tree78a29e173f1611f2e5a630c93f3d53d67466d440 /src/vnet/tcp/tcp.c
parent045a6ae99db25d3ce8a83d1f291715ff033a7f11 (diff)
session: consolidate port alloc logic
Move port allocation logic from transports into generic transport layer. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I55a21f185d00f5e118c36bcc4a6ffba2cbda885e
Diffstat (limited to 'src/vnet/tcp/tcp.c')
-rw-r--r--src/vnet/tcp/tcp.c29
1 files changed, 8 insertions, 21 deletions
diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index c0445b9048b..6e0c1474dd5 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -764,11 +764,13 @@ tcp_connection_init_vars (tcp_connection_t * tc)
}
static int
-tcp_alloc_custom_local_endpoint (tcp_main_t * tm, ip46_address_t * lcl_addr,
- u16 * lcl_port, u8 is_ip4)
+tcp_alloc_custom_local_endpoint (ip46_address_t *lcl_addr, u16 *lcl_port,
+ transport_endpoint_cfg_t *rmt)
{
+ tcp_main_t *tm = vnet_get_tcp_main ();
int index, port;
- if (is_ip4)
+
+ if (rmt->is_ip4)
{
index = tm->last_v4_addr_rotor++;
if (tm->last_v4_addr_rotor >= vec_len (tcp_cfg.ip4_src_addrs))
@@ -784,7 +786,7 @@ tcp_alloc_custom_local_endpoint (tcp_main_t * tm, ip46_address_t * lcl_addr,
clib_memcpy_fast (&lcl_addr->ip6, &tcp_cfg.ip6_src_addrs[index],
sizeof (ip6_address_t));
}
- port = transport_alloc_local_port (TRANSPORT_PROTO_TCP, lcl_addr);
+ port = transport_alloc_local_port (TRANSPORT_PROTO_TCP, lcl_addr, rmt);
if (port < 1)
return SESSION_E_NOPORT;
*lcl_port = port;
@@ -794,7 +796,6 @@ tcp_alloc_custom_local_endpoint (tcp_main_t * tm, ip46_address_t * lcl_addr,
static int
tcp_session_open (transport_endpoint_cfg_t * rmt)
{
- tcp_main_t *tm = vnet_get_tcp_main ();
tcp_connection_t *tc;
ip46_address_t lcl_addr;
u16 lcl_port;
@@ -805,27 +806,13 @@ tcp_session_open (transport_endpoint_cfg_t * rmt)
*/
if ((rmt->is_ip4 && vec_len (tcp_cfg.ip4_src_addrs))
|| (!rmt->is_ip4 && vec_len (tcp_cfg.ip6_src_addrs)))
- rv = tcp_alloc_custom_local_endpoint (tm, &lcl_addr, &lcl_port,
- rmt->is_ip4);
+ rv = tcp_alloc_custom_local_endpoint (&lcl_addr, &lcl_port, rmt);
else
rv = transport_alloc_local_endpoint (TRANSPORT_PROTO_TCP,
rmt, &lcl_addr, &lcl_port);
if (rv)
- {
- if (rv != SESSION_E_PORTINUSE)
- return rv;
-
- if (session_lookup_connection (rmt->fib_index, &lcl_addr, &rmt->ip,
- lcl_port, rmt->port, TRANSPORT_PROTO_TCP,
- 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_TCP, &lcl_addr,
- lcl_port);
- }
+ return rv;
/*
* Create connection and send SYN