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-rw-r--r--src/vnet/session/segment_manager.c22
-rw-r--r--src/vnet/session/session.c4
-rw-r--r--src/vnet/session/session_lookup.c13
-rw-r--r--src/vnet/session/session_lookup.h15
-rw-r--r--src/vnet/session/session_node.c2
-rw-r--r--src/vnet/session/transport.c64
-rw-r--r--src/vnet/session/transport.h2
-rw-r--r--src/vnet/udp/udp.c42
8 files changed, 124 insertions, 40 deletions
diff --git a/src/vnet/session/segment_manager.c b/src/vnet/session/segment_manager.c
index 154c7a61880..716f2a39a4e 100644
--- a/src/vnet/session/segment_manager.c
+++ b/src/vnet/session/segment_manager.c
@@ -211,6 +211,15 @@ segment_manager_del_segment (segment_manager_t * sm, fifo_segment_t * fs)
pool_put (sm->segments, fs);
}
+static fifo_segment_t *
+segment_manager_get_segment_if_valid (segment_manager_t * sm,
+ u32 segment_index)
+{
+ if (pool_is_free_index (sm->segments, segment_index))
+ return 0;
+ return pool_elt_at_index (sm->segments, segment_index);
+}
+
/**
* Removes segment after acquiring writer lock
*/
@@ -221,15 +230,18 @@ segment_manager_lock_and_del_segment (segment_manager_t * sm, u32 fs_index)
u8 is_prealloc;
clib_rwlock_writer_lock (&sm->segments_rwlock);
- fs = segment_manager_get_segment (sm, fs_index);
+
+ fs = segment_manager_get_segment_if_valid (sm, fs_index);
+ if (!fs)
+ goto done;
+
is_prealloc = fifo_segment_flags (fs) & FIFO_SEGMENT_F_IS_PREALLOCATED;
if (is_prealloc && !segment_manager_app_detached (sm))
- {
- clib_rwlock_writer_unlock (&sm->segments_rwlock);
- return;
- }
+ goto done;
segment_manager_del_segment (sm, fs);
+
+done:
clib_rwlock_writer_unlock (&sm->segments_rwlock);
}
diff --git a/src/vnet/session/session.c b/src/vnet/session/session.c
index ac29627548c..79f93c40693 100644
--- a/src/vnet/session/session.c
+++ b/src/vnet/session/session.c
@@ -1099,7 +1099,7 @@ session_open_cl (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque)
if (rv < 0)
{
SESSION_DBG ("Transport failed to open connection.");
- return VNET_API_ERROR_SESSION_CONNECT;
+ return rv;
}
tc = transport_get_half_open (rmt->transport_proto, (u32) rv);
@@ -1133,7 +1133,7 @@ session_open_vc (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque)
if (rv < 0)
{
SESSION_DBG ("Transport failed to open connection.");
- return VNET_API_ERROR_SESSION_CONNECT;
+ return rv;
}
tc = transport_get_half_open (rmt->transport_proto, (u32) rv);
diff --git a/src/vnet/session/session_lookup.c b/src/vnet/session/session_lookup.c
index 986832346fc..4de6fdbe547 100644
--- a/src/vnet/session/session_lookup.c
+++ b/src/vnet/session/session_lookup.c
@@ -1289,6 +1289,19 @@ session_lookup_safe6 (u32 fib_index, ip6_address_t * lcl, ip6_address_t * rmt,
return 0;
}
+transport_connection_t *
+session_lookup_connection (u32 fib_index, ip46_address_t * lcl,
+ ip46_address_t * rmt, u16 lcl_port, u16 rmt_port,
+ u8 proto, u8 is_ip4)
+{
+ if (is_ip4)
+ return session_lookup_connection4 (fib_index, &lcl->ip4, &rmt->ip4,
+ lcl_port, rmt_port, proto);
+ else
+ return session_lookup_connection6 (fib_index, &lcl->ip6, &rmt->ip6,
+ lcl_port, rmt_port, proto);
+}
+
int
vnet_session_rule_add_del (session_rule_add_del_args_t * args)
{
diff --git a/src/vnet/session/session_lookup.h b/src/vnet/session/session_lookup.h
index 8224219c4e2..4e80566953e 100644
--- a/src/vnet/session/session_lookup.h
+++ b/src/vnet/session/session_lookup.h
@@ -59,12 +59,15 @@ transport_connection_t *session_lookup_connection6 (u32 fib_index,
ip6_address_t * rmt,
u16 lcl_port,
u16 rmt_port, u8 proto);
-session_t *session_lookup_listener4 (u32 fib_index,
- ip4_address_t * lcl, u16 lcl_port,
- u8 proto, u8 use_wildcard);
-session_t *session_lookup_listener6 (u32 fib_index,
- ip6_address_t * lcl, u16 lcl_port,
- u8 proto, u8 use_wildcard);
+transport_connection_t *session_lookup_connection (u32 fib_index,
+ ip46_address_t * lcl,
+ ip46_address_t * rmt,
+ u16 lcl_port, u16 rmt_port,
+ u8 proto, u8 is_ip4);
+session_t *session_lookup_listener4 (u32 fib_index, ip4_address_t * lcl,
+ u16 lcl_port, u8 proto, u8 use_wildcard);
+session_t *session_lookup_listener6 (u32 fib_index, ip6_address_t * lcl,
+ u16 lcl_port, u8 proto, u8 use_wildcard);
session_t *session_lookup_listener (u32 table_index,
session_endpoint_t * sep);
session_t *session_lookup_listener_wildcard (u32 table_index,
diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index f023a95c98c..573fbe91b09 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -137,7 +137,7 @@ session_mq_connect_handler (void *data)
if ((rv = vnet_connect (a)))
{
- clib_warning ("connect returned: %U", format_vnet_api_errno, rv);
+ clib_warning ("connect returned: %U", format_session_error, rv);
app_wrk = application_get_worker (app, mp->wrk_index);
mq_send_session_connected_cb (app_wrk->wrk_index, mp->context, 0, rv);
}
diff --git a/src/vnet/session/transport.c b/src/vnet/session/transport.c
index 29c94f363ff..ba6220033c7 100644
--- a/src/vnet/session/transport.c
+++ b/src/vnet/session/transport.c
@@ -17,6 +17,12 @@
#include <vnet/session/session.h>
#include <vnet/fib/fib.h>
+typedef struct local_endpoint_
+{
+ transport_endpoint_t ep;
+ int refcnt;
+} local_endpoint_t;
+
/**
* Per-type vector of transport protocol virtual function tables
*/
@@ -35,7 +41,7 @@ static transport_endpoint_table_t local_endpoints_table;
/*
* Pool of local endpoints
*/
-static transport_endpoint_t *local_endpoints;
+static local_endpoint_t *local_endpoints;
/*
* Local endpoints pool lock
@@ -401,44 +407,64 @@ transport_endpoint_del (u32 tepi)
clib_spinlock_unlock_if_init (&local_endpoints_lock);
}
-always_inline transport_endpoint_t *
+always_inline local_endpoint_t *
transport_endpoint_new (void)
{
- transport_endpoint_t *tep;
- pool_get_zero (local_endpoints, tep);
- return tep;
+ local_endpoint_t *lep;
+ pool_get_zero (local_endpoints, lep);
+ return lep;
}
void
transport_endpoint_cleanup (u8 proto, ip46_address_t * lcl_ip, u16 port)
{
- u32 tepi;
- transport_endpoint_t *tep;
+ local_endpoint_t *lep;
+ u32 lepi;
/* Cleanup local endpoint if this was an active connect */
- tepi = transport_endpoint_lookup (&local_endpoints_table, proto, lcl_ip,
+ lepi = transport_endpoint_lookup (&local_endpoints_table, proto, lcl_ip,
clib_net_to_host_u16 (port));
- if (tepi != ENDPOINT_INVALID_INDEX)
+ if (lepi != ENDPOINT_INVALID_INDEX)
{
- tep = pool_elt_at_index (local_endpoints, tepi);
- transport_endpoint_table_del (&local_endpoints_table, proto, tep);
- transport_endpoint_del (tepi);
+ lep = pool_elt_at_index (local_endpoints, lepi);
+ if (!clib_atomic_sub_fetch (&lep->refcnt, 1))
+ {
+ transport_endpoint_table_del (&local_endpoints_table, proto,
+ &lep->ep);
+ transport_endpoint_del (lepi);
+ }
}
}
static void
transport_endpoint_mark_used (u8 proto, ip46_address_t * ip, u16 port)
{
- transport_endpoint_t *tep;
+ local_endpoint_t *lep;
clib_spinlock_lock_if_init (&local_endpoints_lock);
- tep = transport_endpoint_new ();
- clib_memcpy_fast (&tep->ip, ip, sizeof (*ip));
- tep->port = port;
- transport_endpoint_table_add (&local_endpoints_table, proto, tep,
- tep - local_endpoints);
+ lep = transport_endpoint_new ();
+ clib_memcpy_fast (&lep->ep.ip, ip, sizeof (*ip));
+ lep->ep.port = port;
+ lep->refcnt = 1;
+ transport_endpoint_table_add (&local_endpoints_table, proto, &lep->ep,
+ lep - local_endpoints);
clib_spinlock_unlock_if_init (&local_endpoints_lock);
}
+void
+transport_share_local_endpoint (u8 proto, ip46_address_t * lcl_ip, u16 port)
+{
+ local_endpoint_t *lep;
+ u32 lepi;
+
+ lepi = transport_endpoint_lookup (&local_endpoints_table, proto, lcl_ip,
+ clib_net_to_host_u16 (port));
+ if (lepi != ENDPOINT_INVALID_INDEX)
+ {
+ lep = pool_elt_at_index (local_endpoints, lepi);
+ clib_atomic_add_fetch (&lep->refcnt, 1);
+ }
+}
+
/**
* Allocate local port and add if successful add entry to local endpoint
* table to mark the pair as used.
@@ -572,13 +598,13 @@ transport_alloc_local_endpoint (u8 proto, transport_endpoint_cfg_t * rmt_cfg,
else
{
port = clib_net_to_host_u16 (rmt_cfg->peer.port);
+ *lcl_port = port;
tei = transport_endpoint_lookup (&local_endpoints_table, proto,
lcl_addr, port);
if (tei != ENDPOINT_INVALID_INDEX)
return SESSION_E_PORTINUSE;
transport_endpoint_mark_used (proto, lcl_addr, port);
- *lcl_port = port;
}
return 0;
diff --git a/src/vnet/session/transport.h b/src/vnet/session/transport.h
index eb98032b1e4..5592601983d 100644
--- a/src/vnet/session/transport.h
+++ b/src/vnet/session/transport.h
@@ -239,6 +239,8 @@ int transport_alloc_local_port (u8 proto, ip46_address_t * ip);
int transport_alloc_local_endpoint (u8 proto, transport_endpoint_cfg_t * rmt,
ip46_address_t * lcl_addr,
u16 * lcl_port);
+void transport_share_local_endpoint (u8 proto, ip46_address_t * lcl_ip,
+ u16 port);
void transport_endpoint_cleanup (u8 proto, ip46_address_t * lcl_ip, u16 port);
void transport_enable_disable (vlib_main_t * vm, u8 is_en);
void transport_init (void);
diff --git a/src/vnet/udp/udp.c b/src/vnet/udp/udp.c
index 65d50fff395..48d518a984e 100644
--- a/src/vnet/udp/udp.c
+++ b/src/vnet/udp/udp.c
@@ -149,6 +149,17 @@ udp_connection_delete (udp_connection_t * uc)
udp_connection_cleanup (uc);
}
+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;
+
+ 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));
+}
+
u32
udp_session_bind (u32 session_index, transport_endpoint_t * lcl)
{
@@ -156,18 +167,15 @@ udp_session_bind (u32 session_index, transport_endpoint_t * lcl)
vlib_main_t *vm = vlib_get_main ();
transport_endpoint_cfg_t *lcl_ext;
udp_connection_t *listener;
- udp_dst_port_info_t *pi;
u16 lcl_port_ho;
void *iface_ip;
lcl_port_ho = clib_net_to_host_u16 (lcl->port);
- pi = udp_get_dst_port_info (um, lcl_port_ho, lcl->is_ip4);
- if (pi && !pi->n_connections
- && udp_is_valid_dst_port (lcl_port_ho, lcl->is_ip4))
+ if (udp_connection_port_used_extern (lcl_port_ho, lcl->is_ip4))
{
clib_warning ("port already used");
- return -1;
+ return SESSION_E_PORTINUSE;
}
pool_get (um->listener_pool, listener);
@@ -415,15 +423,33 @@ udp_open_connection (transport_endpoint_cfg_t * rmt)
{
vlib_main_t *vm = vlib_get_main ();
u32 thread_index = vm->thread_index;
- udp_connection_t *uc;
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)
- return 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))
{
@@ -441,6 +467,8 @@ udp_open_connection (transport_endpoint_cfg_t * rmt)
}
}
+conn_alloc:
+
udp_connection_register_port (vm, lcl_port, rmt->is_ip4);
/* We don't poll main thread if we have workers */