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-rw-r--r--src/vnet/api_errno.h3
-rw-r--r--src/vnet/session/application.h1
-rw-r--r--src/vnet/session/application_interface.c8
-rw-r--r--src/vnet/session/session_lookup.c405
-rw-r--r--src/vnet/session/session_lookup.h7
-rw-r--r--src/vnet/session/session_rules_table.h3
-rw-r--r--src/vnet/session/session_test.c143
7 files changed, 363 insertions, 207 deletions
diff --git a/src/vnet/api_errno.h b/src/vnet/api_errno.h
index d77af973b3b..f24cef4739c 100644
--- a/src/vnet/api_errno.h
+++ b/src/vnet/api_errno.h
@@ -129,7 +129,8 @@ _(NAME_RESOLUTION_NOT_ENABLED, -136, "Name resolution not enabled") \
_(NAME_SERVER_FORMAT_ERROR, -137, "Server format error (bug!)") \
_(NAME_SERVER_NO_SUCH_NAME, -138, "No such name") \
_(NAME_SERVER_NO_ADDRESSES, -139, "No addresses available") \
-_(NAME_SERVER_NEXT_SERVER, -140, "Retry with new server")
+_(NAME_SERVER_NEXT_SERVER, -140, "Retry with new server") \
+_(APP_CONNECT_FILTERED, -141, "Connect was filtered")
typedef enum
{
diff --git a/src/vnet/session/application.h b/src/vnet/session/application.h
index b9852131fae..94a4e258298 100644
--- a/src/vnet/session/application.h
+++ b/src/vnet/session/application.h
@@ -103,6 +103,7 @@ typedef struct _application
} application_t;
#define APP_INVALID_INDEX ((u32)~0)
+#define APP_DROP_INDEX (((u32)~0) - 1)
#define APP_NS_INVALID_INDEX ((u32)~0)
#define APP_INVALID_SEGMENT_MANAGER_INDEX ((u32) ~0)
diff --git a/src/vnet/session/application_interface.c b/src/vnet/session/application_interface.c
index a9dda022751..8dab3d67bce 100644
--- a/src/vnet/session/application_interface.c
+++ b/src/vnet/session/application_interface.c
@@ -109,7 +109,7 @@ vnet_bind_i (u32 app_index, session_endpoint_t * sep, u64 * handle)
table_index = application_session_table (app,
session_endpoint_fib_proto (sep));
- listener = session_lookup_session_endpoint (table_index, sep);
+ listener = session_lookup_endpoint_listener (table_index, sep, 1);
if (listener != SESSION_INVALID_HANDLE)
return VNET_API_ERROR_ADDRESS_IN_USE;
@@ -120,7 +120,7 @@ vnet_bind_i (u32 app_index, session_endpoint_t * sep, u64 * handle)
if (application_has_local_scope (app) && session_endpoint_is_zero (sep))
{
table_index = application_local_session_table (app);
- listener = session_lookup_session_endpoint (table_index, sep);
+ listener = session_lookup_endpoint_listener (table_index, sep, 1);
if (listener != SESSION_INVALID_HANDLE)
return VNET_API_ERROR_ADDRESS_IN_USE;
session_lookup_add_session_endpoint (table_index, sep, app->index);
@@ -223,7 +223,9 @@ vnet_connect_i (u32 app_index, u32 api_context, session_endpoint_t * sep,
if (application_has_local_scope (app))
{
table_index = application_local_session_table (app);
- server_index = session_lookup_local_session_endpoint (table_index, sep);
+ server_index = session_lookup_local_endpoint (table_index, sep);
+ if (server_index == APP_DROP_INDEX)
+ return VNET_API_ERROR_APP_CONNECT_FILTERED;
/*
* Break loop if rule in local table points to connecting app. This
diff --git a/src/vnet/session/session_lookup.c b/src/vnet/session/session_lookup.c
index afbb8dada52..f4b26f6d931 100644
--- a/src/vnet/session/session_lookup.c
+++ b/src/vnet/session/session_lookup.c
@@ -348,7 +348,7 @@ session_lookup_del_session (stream_session_t * s)
}
static u32
-session_lookup_action_to_session (u32 action_index)
+session_lookup_action_to_session_index (u32 action_index)
{
if (action_index != SESSION_RULES_TABLE_ACTION_DROP)
return action_index;
@@ -367,16 +367,27 @@ session_lookup_app_listen_session (u32 app_index, u8 fib_proto,
return application_first_listener (app, fib_proto, transport_proto);
}
+static stream_session_t *
+session_lookup_action_to_session (u32 action_index, u8 fib_proto,
+ u8 transport_proto)
+{
+ u32 session_index;
+ session_index = session_lookup_action_to_session_index (action_index);
+ /* Nothing sophisticated for now, action index is app index */
+ return session_lookup_app_listen_session (session_index, fib_proto,
+ transport_proto);
+}
+
stream_session_t *
-session_lookup_rules_table4 (session_table_t * st, u8 proto,
- ip4_address_t * lcl, u16 lcl_port,
- ip4_address_t * rmt, u16 rmt_port)
+session_lookup_rules_table_session4 (session_table_t * st, u8 proto,
+ ip4_address_t * lcl, u16 lcl_port,
+ ip4_address_t * rmt, u16 rmt_port)
{
session_rules_table_t *srt = &st->session_rules[proto];
u32 action_index, session_index;
action_index = session_rules_table_lookup4 (srt, lcl, rmt, lcl_port,
rmt_port);
- session_index = session_lookup_action_to_session (action_index);
+ session_index = session_lookup_action_to_session_index (action_index);
/* Nothing sophisticated for now, action index is app index */
return session_lookup_app_listen_session (session_index, FIB_PROTOCOL_IP4,
proto);
@@ -391,20 +402,27 @@ session_lookup_rules_table6 (session_table_t * st, u8 proto,
u32 action_index, session_index;
action_index = session_rules_table_lookup6 (srt, lcl, rmt, lcl_port,
rmt_port);
- session_index = session_lookup_action_to_session (action_index);
+ session_index = session_lookup_action_to_session_index (action_index);
return session_lookup_app_listen_session (session_index, FIB_PROTOCOL_IP6,
proto);
}
+/**
+ * Lookup listener for session endpoint in table
+ *
+ * @param table_index table where the endpoint should be looked up
+ * @param sep session endpoint to be looked up
+ * @param use_rules flag that indicates if the session rules of the table
+ * should be used
+ * @return invalid handle if nothing is found, the handle of a valid listener
+ * or an action_index if a rule is hit
+ */
u64
-session_lookup_session_endpoint (u32 table_index, session_endpoint_t * sep)
+session_lookup_endpoint_listener (u32 table_index, session_endpoint_t * sep,
+ u8 use_rules)
{
session_rules_table_t *srt;
session_table_t *st;
- session_kv4_t kv4;
- session_kv6_t kv6;
- ip4_address_t lcl4;
- ip6_address_t lcl6;
u32 ai;
int rv;
u8 sst;
@@ -415,94 +433,95 @@ session_lookup_session_endpoint (u32 table_index, session_endpoint_t * sep)
return SESSION_INVALID_HANDLE;
if (sep->is_ip4)
{
+ session_kv4_t kv4;
+ ip4_address_t lcl4;
+
make_v4_listener_kv (&kv4, &sep->ip.ip4, sep->port, sst);
rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
return kv4.value;
-
- memset (&lcl4, 0, sizeof (lcl4));
- srt = &st->session_rules[sep->transport_proto];
- ai = session_rules_table_lookup4 (srt, &lcl4, &sep->ip.ip4, 0,
- sep->port);
- if (ai != SESSION_RULES_TABLE_INVALID_INDEX)
- return session_lookup_action_to_session (ai);
+ if (use_rules)
+ {
+ memset (&lcl4, 0, sizeof (lcl4));
+ srt = &st->session_rules[sep->transport_proto];
+ ai = session_rules_table_lookup4 (srt, &lcl4, &sep->ip.ip4, 0,
+ sep->port);
+ if (ai != SESSION_RULES_TABLE_INVALID_INDEX)
+ return session_lookup_action_to_session_index (ai);
+ }
}
else
{
+ session_kv6_t kv6;
+ ip6_address_t lcl6;
+
make_v6_listener_kv (&kv6, &sep->ip.ip6, sep->port, sst);
rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
if (rv == 0)
return kv6.value;
- memset (&lcl6, 0, sizeof (lcl6));
- srt = &st->session_rules[sep->transport_proto];
- ai = session_rules_table_lookup6 (srt, &lcl6, &sep->ip.ip6, 0,
- sep->port);
- if (ai != SESSION_RULES_TABLE_INVALID_INDEX)
- return session_lookup_action_to_session (ai);
+ if (use_rules)
+ {
+ memset (&lcl6, 0, sizeof (lcl6));
+ srt = &st->session_rules[sep->transport_proto];
+ ai = session_rules_table_lookup6 (srt, &lcl6, &sep->ip.ip6, 0,
+ sep->port);
+ if (ai != SESSION_RULES_TABLE_INVALID_INDEX)
+ return session_lookup_action_to_session_index (ai);
+ }
}
return SESSION_INVALID_HANDLE;
}
-stream_session_t *
-session_lookup_global_session_endpoint (session_endpoint_t * sep)
-{
- session_table_t *st;
- session_kv4_t kv4;
- session_kv6_t kv6;
- ip4_address_t lcl4;
- ip6_address_t lcl6;
- u8 fib_proto;
- u32 table_index;
- int rv;
-
- fib_proto = session_endpoint_fib_proto (sep);
- table_index = session_lookup_get_index_for_fib (fib_proto, sep->fib_index);
- st = session_table_get (table_index);
- if (!st)
- return 0;
- if (sep->is_ip4)
- {
- make_v4_listener_kv (&kv4, &sep->ip.ip4, sep->port,
- sep->transport_proto);
- rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
- if (rv == 0)
- return session_get_from_handle (kv4.value);
- memset (&lcl4, 0, sizeof (lcl4));
- return session_lookup_rules_table4 (st, sep->transport_proto, &lcl4, 0,
- &sep->ip.ip4, sep->port);
- }
- else
- {
- make_v6_listener_kv (&kv6, &sep->ip.ip6, sep->port,
- sep->transport_proto);
- rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
- if (rv == 0)
- return session_get_from_handle (kv6.value);
- memset (&lcl6, 0, sizeof (lcl6));
- return session_lookup_rules_table6 (st, sep->transport_proto, &lcl6, 0,
- &sep->ip.ip6, sep->port);
- }
-}
-
+/**
+ * Look up endpoint in local session table
+ *
+ * The result, for now, is an application index and it may in the future
+ * be extended to a more complicated "action object". The only action we
+ * emulate now is "drop" and for that we return a special app index.
+ *
+ * Lookup logic is to check in order:
+ * - the rules in the table (connect acls)
+ * - session sub-table for a listener
+ * - session sub-table for a local listener (zeroed addr)
+ *
+ * @param table_index table where the lookup should be done
+ * @param sep session endpoint to be looked up
+ * @return index that can be interpreted as an app index or drop action.
+ */
u32
-session_lookup_local_session_endpoint (u32 table_index,
- session_endpoint_t * sep)
+session_lookup_local_endpoint (u32 table_index, session_endpoint_t * sep)
{
session_rules_table_t *srt;
session_table_t *st;
- session_kv4_t kv4;
- session_kv6_t kv6;
- ip4_address_t lcl4;
- ip6_address_t lcl6;
u32 ai;
int rv;
st = session_table_get (table_index);
if (!st)
return SESSION_INVALID_INDEX;
+ ASSERT (st->is_local);
+
if (sep->is_ip4)
{
+ session_kv4_t kv4;
+ ip4_address_t lcl4;
+
+ /*
+ * Check if endpoint has special rules associated
+ */
+ memset (&lcl4, 0, sizeof (lcl4));
+ srt = &st->session_rules[sep->transport_proto];
+ ai = session_rules_table_lookup4 (srt, &lcl4, &sep->ip.ip4, 0,
+ sep->port);
+ if (ai == SESSION_RULES_TABLE_ACTION_DROP)
+ return APP_DROP_INDEX;
+ if (ai != SESSION_RULES_TABLE_ACTION_NONE)
+ return session_lookup_action_to_session_index (ai);
+
+ /*
+ * Check if session endpoint is a listener
+ */
make_v4_listener_kv (&kv4, &sep->ip.ip4, sep->port,
sep->transport_proto);
rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
@@ -517,16 +536,21 @@ session_lookup_local_session_endpoint (u32 table_index,
rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
return (u32) kv4.value;
+ }
+ else
+ {
+ session_kv6_t kv6;
+ ip6_address_t lcl6;
- memset (&lcl4, 0, sizeof (lcl4));
+ memset (&lcl6, 0, sizeof (lcl6));
srt = &st->session_rules[sep->transport_proto];
- ai = session_rules_table_lookup4 (srt, &lcl4, &sep->ip.ip4, 0,
+ ai = session_rules_table_lookup6 (srt, &lcl6, &sep->ip.ip6, 0,
sep->port);
+ if (ai == SESSION_RULES_TABLE_ACTION_DROP)
+ return APP_DROP_INDEX;
if (ai != SESSION_RULES_TABLE_INVALID_INDEX)
- return session_lookup_action_to_session (ai);
- }
- else
- {
+ return session_lookup_action_to_session_index (ai);
+
make_v6_listener_kv (&kv6, &sep->ip.ip6, sep->port,
sep->transport_proto);
rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
@@ -540,15 +564,8 @@ session_lookup_local_session_endpoint (u32 table_index,
rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
if (rv == 0)
return (u32) kv6.value;
-
- memset (&lcl6, 0, sizeof (lcl6));
- srt = &st->session_rules[sep->transport_proto];
- ai = session_rules_table_lookup6 (srt, &lcl6, &sep->ip.ip6, 0,
- sep->port);
- if (ai != SESSION_RULES_TABLE_INVALID_INDEX)
- return session_lookup_action_to_session (ai);
}
- return SESSION_INVALID_INDEX;
+ return APP_INVALID_INDEX;
}
static stream_session_t *
@@ -725,30 +742,6 @@ session_lookup_half_open_connection (u64 handle, u8 proto, u8 is_ip4)
return 0;
}
-static transport_connection_t *
-session_lookup_rules_table_connection4 (session_table_t * st, u8 proto,
- ip4_address_t * lcl, u16 lcl_port,
- ip4_address_t * rmt, u16 rmt_port)
-{
- stream_session_t *s;
- s = session_lookup_rules_table4 (st, proto, lcl, lcl_port, rmt, rmt_port);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
- return 0;
-}
-
-static transport_connection_t *
-session_lookup_rules_table_connection6 (session_table_t * srt, u8 proto,
- ip6_address_t * lcl, u16 lcl_port,
- ip6_address_t * rmt, u16 rmt_port)
-{
- stream_session_t *s;
- s = session_lookup_rules_table6 (srt, proto, lcl, lcl_port, rmt, rmt_port);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
- return 0;
-}
-
/**
* Lookup connection with ip4 and transport layer information
*
@@ -758,10 +751,10 @@ session_lookup_rules_table_connection6 (session_table_t * srt, u8 proto,
* The lookup is incremental and returns whenever something is matched. The
* steps are:
* - Try to find an established session
- * - Try to find a fully-formed or local source wildcarded (listener bound to
- * all interfaces) listener session
* - Try to find a half-open connection
* - Try session rules table
+ * - Try to find a fully-formed or local source wildcarded (listener bound to
+ * all interfaces) listener session
* - return 0
*
* @param fib_index index of fib wherein the connection was received
@@ -782,13 +775,16 @@ session_lookup_connection_wt4 (u32 fib_index, ip4_address_t * lcl,
session_table_t *st;
session_kv4_t kv4;
stream_session_t *s;
+ u32 action_index;
int rv;
st = session_table_get_for_fib_index (FIB_PROTOCOL_IP4, fib_index);
if (PREDICT_FALSE (!st))
return 0;
- /* Lookup session amongst established ones */
+ /*
+ * Lookup session amongst established ones
+ */
make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto);
rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
@@ -799,12 +795,9 @@ session_lookup_connection_wt4 (u32 fib_index, ip4_address_t * lcl,
thread_index);
}
- /* If nothing is found, check if any listener is available */
- s = session_lookup_listener4_i (st, lcl, lcl_port, proto);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
-
- /* Try half-open connections */
+ /*
+ * Try half-open connections
+ */
rv = clib_bihash_search_inline_16_8 (&st->v4_half_open_hash, &kv4);
if (rv == 0)
{
@@ -812,9 +805,29 @@ session_lookup_connection_wt4 (u32 fib_index, ip4_address_t * lcl,
return tp_vfts[sst].get_half_open (kv4.value & 0xFFFFFFFF);
}
- /* Check the session rules table */
- return session_lookup_rules_table_connection4 (st, proto, lcl, lcl_port,
- rmt, rmt_port);
+ /*
+ * Check the session rules table
+ */
+ action_index = session_rules_table_lookup4 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if (action_index != SESSION_RULES_TABLE_ACTION_NONE)
+ {
+ s = session_lookup_action_to_session (action_index, FIB_PROTOCOL_IP4,
+ proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+ }
+
+ /*
+ * If nothing is found, check if any listener is available
+ */
+ s = session_lookup_listener4_i (st, lcl, lcl_port, proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+
+ return 0;
}
/**
@@ -841,13 +854,16 @@ session_lookup_connection4 (u32 fib_index, ip4_address_t * lcl,
session_table_t *st;
session_kv4_t kv4;
stream_session_t *s;
+ u32 action_index;
int rv;
st = session_table_get_for_fib_index (FIB_PROTOCOL_IP4, fib_index);
if (PREDICT_FALSE (!st))
return 0;
- /* Lookup session amongst established ones */
+ /*
+ * Lookup session amongst established ones
+ */
make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto);
rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
@@ -857,21 +873,39 @@ session_lookup_connection4 (u32 fib_index, ip4_address_t * lcl,
s->thread_index);
}
- /* If nothing is found, check if any listener is available */
- s = session_lookup_listener4_i (st, lcl, lcl_port, proto);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
-
- /* Finally, try half-open connections */
+ /*
+ * Try half-open connections
+ */
rv = clib_bihash_search_inline_16_8 (&st->v4_half_open_hash, &kv4);
if (rv == 0)
{
u32 sst = session_type_from_proto_and_ip (proto, 1);
return tp_vfts[sst].get_half_open (kv4.value & 0xFFFFFFFF);
}
- /* Check the session rules table */
- return session_lookup_rules_table_connection4 (st, proto, lcl, lcl_port,
- rmt, rmt_port);
+
+ /*
+ * Check the session rules table
+ */
+ action_index = session_rules_table_lookup4 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if (action_index != SESSION_RULES_TABLE_ACTION_NONE)
+ {
+ s = session_lookup_action_to_session (action_index, FIB_PROTOCOL_IP4,
+ proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+ }
+
+ /*
+ * If nothing is found, check if any listener is available
+ */
+ s = session_lookup_listener4_i (st, lcl, lcl_port, proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+
+ return 0;
}
/**
@@ -894,23 +928,42 @@ session_lookup_safe4 (u32 fib_index, ip4_address_t * lcl, ip4_address_t * rmt,
session_table_t *st;
session_kv4_t kv4;
stream_session_t *s;
+ u32 action_index;
int rv;
st = session_table_get_for_fib_index (FIB_PROTOCOL_IP4, fib_index);
if (PREDICT_FALSE (!st))
return 0;
- /* Lookup session amongst established ones */
+ /*
+ * Lookup session amongst established ones
+ */
make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto);
rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
return session_get_from_handle_safe (kv4.value);
- /* If nothing is found, check if any listener is available */
+ /*
+ * Check the session rules table
+ */
+ action_index = session_rules_table_lookup4 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if (action_index != SESSION_RULES_TABLE_ACTION_NONE)
+ {
+ if ((s = session_lookup_action_to_session (action_index,
+ FIB_PROTOCOL_IP4, proto)))
+ return s;
+ }
+
+ /*
+ * If nothing is found, check if any listener is available
+ */
if ((s = session_lookup_listener4_i (st, lcl, lcl_port, proto)))
return s;
- return session_lookup_rules_table4 (st, proto, lcl,
- lcl_port, rmt, rmt_port);
+
+ return 0;
}
/**
@@ -922,10 +975,10 @@ session_lookup_safe4 (u32 fib_index, ip4_address_t * lcl, ip4_address_t * rmt,
* The lookup is incremental and returns whenever something is matched. The
* steps are:
* - Try to find an established session
- * - Try to find a fully-formed or local source wildcarded (listener bound to
- * all interfaces) listener session
* - Try to find a half-open connection
* - Try session rules table
+ * - Try to find a fully-formed or local source wildcarded (listener bound to
+ * all interfaces) listener session
* - return 0
*
* @param fib_index index of the fib wherein the connection was received
@@ -946,6 +999,7 @@ session_lookup_connection_wt6 (u32 fib_index, ip6_address_t * lcl,
session_table_t *st;
stream_session_t *s;
session_kv6_t kv6;
+ u32 action_index;
int rv;
st = session_table_get_for_fib_index (FIB_PROTOCOL_IP6, fib_index);
@@ -962,12 +1016,7 @@ session_lookup_connection_wt6 (u32 fib_index, ip6_address_t * lcl,
thread_index);
}
- /* If nothing is found, check if any listener is available */
- s = session_lookup_listener6_i (st, lcl, lcl_port, proto);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
-
- /* Finally, try half-open connections */
+ /* Try half-open connections */
rv = clib_bihash_search_inline_48_8 (&st->v6_half_open_hash, &kv6);
if (rv == 0)
{
@@ -975,8 +1024,25 @@ session_lookup_connection_wt6 (u32 fib_index, ip6_address_t * lcl,
return tp_vfts[sst].get_half_open (kv6.value & 0xFFFFFFFF);
}
- return session_lookup_rules_table_connection6 (st, proto, lcl, lcl_port,
- rmt, rmt_port);
+ /* Check the session rules table */
+ action_index = session_rules_table_lookup6 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if (action_index != SESSION_RULES_TABLE_ACTION_NONE)
+ {
+ s = session_lookup_action_to_session (action_index, FIB_PROTOCOL_IP4,
+ proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+ }
+
+ /* If nothing is found, check if any listener is available */
+ s = session_lookup_listener6_i (st, lcl, lcl_port, proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+
+ return 0;
}
/**
@@ -1003,6 +1069,7 @@ session_lookup_connection6 (u32 fib_index, ip6_address_t * lcl,
session_table_t *st;
stream_session_t *s;
session_kv6_t kv6;
+ u32 action_index;
int rv;
st = session_table_get_for_fib_index (FIB_PROTOCOL_IP6, fib_index);
@@ -1018,12 +1085,7 @@ session_lookup_connection6 (u32 fib_index, ip6_address_t * lcl,
s->thread_index);
}
- /* If nothing is found, check if any listener is available */
- s = session_lookup_listener6 (fib_index, lcl, lcl_port, proto);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
-
- /* Finally, try half-open connections */
+ /* Try half-open connections */
rv = clib_bihash_search_inline_48_8 (&st->v6_half_open_hash, &kv6);
if (rv == 0)
{
@@ -1031,8 +1093,25 @@ session_lookup_connection6 (u32 fib_index, ip6_address_t * lcl,
return tp_vfts[sst].get_half_open (kv6.value & 0xFFFFFFFF);
}
- return session_lookup_rules_table_connection6 (st, proto, lcl, lcl_port,
- rmt, rmt_port);
+ /* Check the session rules table */
+ action_index = session_rules_table_lookup6 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if (action_index != SESSION_RULES_TABLE_ACTION_NONE)
+ {
+ s = session_lookup_action_to_session (action_index, FIB_PROTOCOL_IP4,
+ proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+ }
+
+ /* If nothing is found, check if any listener is available */
+ s = session_lookup_listener6 (fib_index, lcl, lcl_port, proto);
+ if (s)
+ return tp_vfts[s->session_type].get_listener (s->connection_index);
+
+ return 0;
}
/**
@@ -1055,6 +1134,7 @@ session_lookup_safe6 (u32 fib_index, ip6_address_t * lcl, ip6_address_t * rmt,
session_table_t *st;
session_kv6_t kv6;
stream_session_t *s;
+ u32 action_index;
int rv;
st = session_table_get_for_fib_index (FIB_PROTOCOL_IP6, fib_index);
@@ -1066,11 +1146,23 @@ session_lookup_safe6 (u32 fib_index, ip6_address_t * lcl, ip6_address_t * rmt,
if (rv == 0)
return session_get_from_handle_safe (kv6.value);
+ /* Check the session rules table */
+ action_index = session_rules_table_lookup6 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if (action_index != SESSION_RULES_TABLE_ACTION_NONE)
+ {
+ if ((s =
+ session_lookup_action_to_session (action_index, FIB_PROTOCOL_IP4,
+ proto)))
+ return s;
+ }
+
/* If nothing is found, check if any listener is available */
if ((s = session_lookup_listener6_i (st, lcl, lcl_port, proto)))
return s;
- return session_lookup_rules_table6 (st, proto, lcl,
- lcl_port, rmt, rmt_port);
+ return 0;
}
u64
@@ -1138,6 +1230,9 @@ vnet_session_rule_add_del (session_rule_add_del_args_t * args)
}
if (args->scope & SESSION_RULE_SCOPE_LOCAL)
{
+ memset (&args->table_args.lcl, 0, sizeof (args->table_args.lcl));
+ args->table_args.lcl.fp_proto = args->table_args.rmt.fp_proto;
+ args->table_args.lcl_port = 0;
st = app_namespace_get_local_table (app_ns);
srt = &st->session_rules[args->transport_proto];
error = session_rules_table_add_del (srt, &args->table_args);
diff --git a/src/vnet/session/session_lookup.h b/src/vnet/session/session_lookup.h
index 246ab524b0f..3bc70311c6e 100644
--- a/src/vnet/session/session_lookup.h
+++ b/src/vnet/session/session_lookup.h
@@ -59,10 +59,9 @@ stream_session_t *session_lookup_listener (u32 table_index,
session_endpoint_t * sep);
int session_lookup_add_connection (transport_connection_t * tc, u64 value);
int session_lookup_del_connection (transport_connection_t * tc);
-u64 session_lookup_session_endpoint (u32 table_index,
- session_endpoint_t * sep);
-u32 session_lookup_local_session_endpoint (u32 table_index,
- session_endpoint_t * sep);
+u64 session_lookup_endpoint_listener (u32 table_index,
+ session_endpoint_t * sep, u8 use_rules);
+u32 session_lookup_local_endpoint (u32 table_index, session_endpoint_t * sep);
stream_session_t *session_lookup_global_session_endpoint (session_endpoint_t
*);
int session_lookup_add_session_endpoint (u32 table_index,
diff --git a/src/vnet/session/session_rules_table.h b/src/vnet/session/session_rules_table.h
index 9bab61e7539..ecd2d9b14d6 100644
--- a/src/vnet/session/session_rules_table.h
+++ b/src/vnet/session/session_rules_table.h
@@ -55,8 +55,9 @@ typedef CLIB_PACKED (struct
/* *INDENT-ON* */
#define SESSION_RULE_TAG_MAX_LEN 64
-#define SESSION_RULES_TABLE_ACTION_DROP (((u32)~0) - 1)
#define SESSION_RULES_TABLE_INVALID_INDEX MMA_TABLE_INVALID_INDEX
+#define SESSION_RULES_TABLE_ACTION_DROP (((u32)~0) - 1)
+#define SESSION_RULES_TABLE_ACTION_NONE SESSION_RULES_TABLE_INVALID_INDEX
typedef struct _session_rules_table_add_del_args
{
diff --git a/src/vnet/session/session_test.c b/src/vnet/session/session_test.c
index 56d40b81ef8..d592487e5ac 100644
--- a/src/vnet/session/session_test.c
+++ b/src/vnet/session/session_test.c
@@ -329,8 +329,7 @@ session_test_namespace (vlib_main_t * vm, unformat_input_t * input)
"the server");
server_local_st_index = application_local_session_table (server);
local_listener =
- session_lookup_local_session_endpoint (server_local_st_index,
- &server_sep);
+ session_lookup_local_endpoint (server_local_st_index, &server_sep);
SESSION_TEST ((local_listener != SESSION_INVALID_INDEX),
"listener should exist in local table");
@@ -382,8 +381,7 @@ session_test_namespace (vlib_main_t * vm, unformat_input_t * input)
s = session_lookup_listener (server_st_index, &server_sep);
SESSION_TEST ((s == 0), "listener should not exist in global table");
local_listener =
- session_lookup_local_session_endpoint (server_local_st_index,
- &server_sep);
+ session_lookup_local_endpoint (server_local_st_index, &server_sep);
SESSION_TEST ((s == 0), "listener should not exist in local table");
detach_args.app_index = server_index;
@@ -408,8 +406,7 @@ session_test_namespace (vlib_main_t * vm, unformat_input_t * input)
SESSION_TEST ((s == 0), "listener should not exist in global table");
server_local_st_index = application_local_session_table (server);
local_listener =
- session_lookup_local_session_endpoint (server_local_st_index,
- &server_sep);
+ session_lookup_local_endpoint (server_local_st_index, &server_sep);
SESSION_TEST ((local_listener != SESSION_INVALID_INDEX),
"listener should exist in local table");
@@ -418,8 +415,7 @@ session_test_namespace (vlib_main_t * vm, unformat_input_t * input)
SESSION_TEST ((error == 0), "unbind should work");
local_listener =
- session_lookup_local_session_endpoint (server_local_st_index,
- &server_sep);
+ session_lookup_local_endpoint (server_local_st_index, &server_sep);
SESSION_TEST ((local_listener == SESSION_INVALID_INDEX),
"listener should not exist in local table");
@@ -490,8 +486,7 @@ session_test_namespace (vlib_main_t * vm, unformat_input_t * input)
"the server");
server_local_st_index = application_local_session_table (server);
local_listener =
- session_lookup_local_session_endpoint (server_local_st_index,
- &server_sep);
+ session_lookup_local_endpoint (server_local_st_index, &server_sep);
SESSION_TEST ((local_listener != SESSION_INVALID_INDEX),
"zero listener should exist in local table");
detach_args.app_index = server_index;
@@ -896,7 +891,7 @@ session_test_rules (vlib_main_t * vm, unformat_input_t * input)
.port = rmt_port,
.transport_proto = TRANSPORT_PROTO_TCP,
};
- app_index = session_lookup_local_session_endpoint (local_ns_index, &sep);
+ app_index = session_lookup_local_endpoint (local_ns_index, &sep);
SESSION_TEST ((app_index != server_index), "local session endpoint lookup "
"should not work (global scope)");
@@ -919,12 +914,12 @@ session_test_rules (vlib_main_t * vm, unformat_input_t * input)
rmt_port, TRANSPORT_PROTO_TCP, 0);
SESSION_TEST ((tc->c_index == listener->connection_index),
"optimized lookup for lcl port + 1 should work");
- app_index = session_lookup_local_session_endpoint (local_ns_index, &sep);
- SESSION_TEST ((app_index != server_index), "local session endpoint lookup "
- "should not work (constrained lcl ip)");
+ app_index = session_lookup_local_endpoint (local_ns_index, &sep);
+ SESSION_TEST ((app_index == server_index), "local session endpoint lookup "
+ "should work (lcl ip was zeroed)");
/*
- * Add drop rule 1.2.3.4/32 1234 5.6.7.8/32 4321 action -2 (drop)
+ * Add deny rule 1.2.3.4/32 1234 5.6.7.8/32 4321 action -2 (drop)
*/
args.table_args.lcl_port = 1234;
args.table_args.lcl.fp_addr.ip4 = lcl_ip;
@@ -940,7 +935,7 @@ session_test_rules (vlib_main_t * vm, unformat_input_t * input)
{
session_lookup_dump_rules_table (0, FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
- session_lookup_dump_local_rules_table (0, FIB_PROTOCOL_IP4,
+ session_lookup_dump_local_rules_table (local_ns_index, FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
}
@@ -948,7 +943,20 @@ session_test_rules (vlib_main_t * vm, unformat_input_t * input)
&rmt_pref.fp_addr.ip4, lcl_port,
rmt_port, TRANSPORT_PROTO_TCP, 0);
SESSION_TEST ((tc == 0), "lookup for 1.2.3.4/32 1234 5.6.7.8/16 4321 "
- "should fail (drop rule)");
+ "should fail (deny rule)");
+ app_index = session_lookup_local_endpoint (local_ns_index, &sep);
+ SESSION_TEST ((app_index == APP_DROP_INDEX), "lookup for 1.2.3.4/32 1234 "
+ "5.6.7.8/16 4321 in local table should return deny");
+ tc = session_lookup_connection_wt4 (0, &lcl_pref.fp_addr.ip4,
+ &rmt_pref.fp_addr.ip4, lcl_port,
+ rmt_port, TRANSPORT_PROTO_TCP, 0);
+ SESSION_TEST ((tc == 0),
+ "lookup for 1.2.3.4/32 1234 5.6.7.8/16 4321 should not work");
+ tc = session_lookup_connection_wt4 (0, &lcl_pref.fp_addr.ip4,
+ &rmt_pref.fp_addr.ip4, lcl_port + 1,
+ rmt_port, TRANSPORT_PROTO_TCP, 0);
+ SESSION_TEST ((tc->c_index == listener->connection_index),
+ "lookup 1.2.3.4/32 123*5* 5.6.7.8/16 4321 should work");
/*
* Add local scope rule for 0/0 * 5.6.7.8/16 4321 action server_index
@@ -956,7 +964,7 @@ session_test_rules (vlib_main_t * vm, unformat_input_t * input)
args.table_args.lcl_port = 0;
args.table_args.lcl.fp_len = 0;
args.table_args.rmt.fp_len = 16;
- args.table_args.action_index = server_index;
+ args.table_args.action_index = -1;
error = vnet_session_rule_add_del (&args);
SESSION_TEST ((error == 0), "Add * * 5.6.7.8/16 4321 action %d",
args.table_args.action_index);
@@ -965,57 +973,87 @@ session_test_rules (vlib_main_t * vm, unformat_input_t * input)
{
session_lookup_dump_rules_table (0, FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
- session_lookup_dump_local_rules_table (0, FIB_PROTOCOL_IP4,
+ session_lookup_dump_local_rules_table (local_ns_index, FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
}
- app_index = session_lookup_local_session_endpoint (local_ns_index, &sep);
- SESSION_TEST ((app_index == server_index), "local session endpoint lookup "
- "should work");
+ app_index = session_lookup_local_endpoint (local_ns_index, &sep);
+ SESSION_TEST ((app_index == APP_DROP_INDEX),
+ "local session endpoint lookup " "should return deny");
+
+ /*
+ * Delete 1.2.3.4/32 1234 5.6.7.8/32 4321 deny
+ */
+ args.table_args.is_add = 0;
+ args.table_args.lcl_port = 1234;
+ args.table_args.lcl.fp_addr.ip4 = lcl_ip;
+ args.table_args.lcl.fp_len = 32;
+ args.table_args.rmt.fp_addr.ip4 = rmt_ip;
+ args.table_args.rmt.fp_len = 32;
+ error = vnet_session_rule_add_del (&args);
+ SESSION_TEST ((error == 0), "Del 1.2.3.4/32 1234 5.6.7.8/32 4321 deny");
+
+ app_index = session_lookup_local_endpoint (local_ns_index, &sep);
+ SESSION_TEST ((app_index == APP_INVALID_INDEX),
+ "local session endpoint lookup should return invalid");
/*
* Delete 0/0 * 5.6.7.8/16 4321, 1.2.3.4/16 * 5.6.7.8/16 4321 and
* 1.2.3.4/16 1234 5.6.7.8/16 4321
*/
args.table_args.is_add = 0;
+ args.table_args.lcl_port = 0;
+ args.table_args.lcl.fp_addr.ip4 = lcl_ip;
+ args.table_args.lcl.fp_len = 0;
+ args.table_args.rmt.fp_addr.ip4 = rmt_ip;
+ args.table_args.rmt.fp_len = 16;
+ args.table_args.rmt_port = 4321;
error = vnet_session_rule_add_del (&args);
SESSION_TEST ((error == 0), "Del 0/0 * 5.6.7.8/16 4321");
- app_index = session_lookup_local_session_endpoint (local_ns_index, &sep);
+ app_index = session_lookup_local_endpoint (local_ns_index, &sep);
SESSION_TEST ((app_index != server_index), "local session endpoint lookup "
"should not work (removed)");
args.table_args.is_add = 0;
args.table_args.lcl = lcl_pref;
+
+ args.table_args.is_add = 0;
+ args.table_args.lcl_port = 0;
+ args.table_args.lcl.fp_addr.ip4 = lcl_ip;
+ args.table_args.lcl.fp_len = 16;
+ args.table_args.rmt.fp_addr.ip4 = rmt_ip;
+ args.table_args.rmt.fp_len = 16;
+ args.table_args.rmt_port = 4321;
error = vnet_session_rule_add_del (&args);
SESSION_TEST ((error == 0), "Del 1.2.3.4/16 * 5.6.7.8/16 4321");
tc = session_lookup_connection_wt4 (0, &lcl_pref.fp_addr.ip4,
&rmt_pref.fp_addr.ip4, lcl_port + 1,
rmt_port, TRANSPORT_PROTO_TCP, 0);
- SESSION_TEST ((tc == 0), "optimized lookup for lcl port + 1 should not "
+ SESSION_TEST ((tc == 0),
+ "lookup 1.2.3.4/32 123*5* 5.6.7.8/16 4321 should not "
"work (del)");
args.table_args.is_add = 0;
args.table_args.lcl_port = 1234;
+ args.table_args.lcl.fp_addr.ip4 = lcl_ip;
+ args.table_args.lcl.fp_len = 16;
+ args.table_args.rmt.fp_addr.ip4 = rmt_ip;
+ args.table_args.rmt.fp_len = 16;
+ args.table_args.rmt_port = 4321;
error = vnet_session_rule_add_del (&args);
SESSION_TEST ((error == 0), "Del 1.2.3.4/16 1234 5.6.7.8/16 4321");
tc = session_lookup_connection_wt4 (0, &lcl_pref.fp_addr.ip4,
&rmt_pref.fp_addr.ip4, lcl_port,
rmt_port, TRANSPORT_PROTO_TCP, 0);
- SESSION_TEST ((tc == 0),
- "optimized lookup should not work (del + negative)");
+ SESSION_TEST ((tc == 0), "lookup 1.2.3.4/32 1234 5.6.7.8/16 4321 should "
+ "not work (del + deny)");
- args.table_args.is_add = 0;
- args.table_args.lcl_port = 1234;
- args.table_args.lcl.fp_addr.ip4 = lcl_ip;
- args.table_args.lcl.fp_len = 32;
- args.table_args.rmt.fp_addr.ip4 = rmt_ip;
- args.table_args.rmt.fp_len = 32;
- error = vnet_session_rule_add_del (&args);
- SESSION_TEST ((error == 0), "Del 1.2.3.4/32 1234 5.6.7.8/32 4321 drop");
+ SESSION_TEST ((error == 0), "Del 1.2.3.4/32 1234 5.6.7.8/32 4321 deny");
tc = session_lookup_connection_wt4 (0, &lcl_pref.fp_addr.ip4,
&rmt_pref.fp_addr.ip4, lcl_port,
rmt_port, TRANSPORT_PROTO_TCP, 0);
- SESSION_TEST ((tc == 0), "optimized lookup should not work (no-rule)");
+ SESSION_TEST ((tc == 0), "lookup 1.2.3.4/32 1234 5.6.7.8/16 4321 should"
+ " not work (no-rule)");
/*
* Test tags. Add/del rule with tag
@@ -1026,22 +1064,43 @@ session_test_rules (vlib_main_t * vm, unformat_input_t * input)
args.table_args.lcl.fp_len = 16;
args.table_args.rmt.fp_addr.ip4 = rmt_ip;
args.table_args.rmt.fp_len = 16;
+ args.table_args.rmt_port = 4321;
args.table_args.tag = format (0, "test_rule");
+ args.table_args.action_index = server_index;
error = vnet_session_rule_add_del (&args);
- SESSION_TEST ((error == 0), "Add 1.2.3.4/16 1234 5.6.7.8/16 4321 drop "
+ SESSION_TEST ((error == 0), "Add 1.2.3.4/16 1234 5.6.7.8/16 4321 deny "
"tag test_rule");
if (verbose)
{
session_lookup_dump_rules_table (0, FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
- session_lookup_dump_local_rules_table (0, FIB_PROTOCOL_IP4,
+ session_lookup_dump_local_rules_table (local_ns_index, FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
}
+ tc = session_lookup_connection_wt4 (0, &lcl_pref.fp_addr.ip4,
+ &rmt_pref.fp_addr.ip4, lcl_port,
+ rmt_port, TRANSPORT_PROTO_TCP, 0);
+ SESSION_TEST ((tc->c_index == listener->connection_index),
+ "lookup 1.2.3.4/32 1234 5.6.7.8/16 4321 should work");
+
args.table_args.is_add = 0;
args.table_args.lcl_port += 1;
- SESSION_TEST ((error == 0), "Del 1.2.3.4/32 1234 5.6.7.8/32 4321 drop "
+ error = vnet_session_rule_add_del (&args);
+ if (verbose)
+ {
+ session_lookup_dump_rules_table (0, FIB_PROTOCOL_IP4,
+ TRANSPORT_PROTO_TCP);
+ session_lookup_dump_local_rules_table (local_ns_index, FIB_PROTOCOL_IP4,
+ TRANSPORT_PROTO_TCP);
+ }
+ SESSION_TEST ((error == 0), "Del 1.2.3.4/32 1234 5.6.7.8/32 4321 deny "
"tag test_rule");
-
+ tc = session_lookup_connection_wt4 (0, &lcl_pref.fp_addr.ip4,
+ &rmt_pref.fp_addr.ip4, lcl_port,
+ rmt_port, TRANSPORT_PROTO_TCP, 0);
+ SESSION_TEST ((tc == 0), "lookup 1.2.3.4/32 1234 5.6.7.8/16 4321 should not"
+ " work (del)");
+ vec_free (args.table_args.tag);
vnet_app_detach_args_t detach_args = {
.app_index = server_index,
};
@@ -1151,8 +1210,7 @@ session_test_proxy (vlib_main_t * vm, unformat_input_t * input)
session_lookup_dump_local_rules_table (app_ns->local_table_index,
FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
- app_index =
- session_lookup_local_session_endpoint (app_ns->local_table_index, &sep);
+ app_index = session_lookup_local_endpoint (app_ns->local_table_index, &sep);
SESSION_TEST ((app_index == server_index), "local session endpoint lookup"
" should work");
@@ -1166,8 +1224,7 @@ session_test_proxy (vlib_main_t * vm, unformat_input_t * input)
FIB_PROTOCOL_IP4,
TRANSPORT_PROTO_TCP);
- app_index =
- session_lookup_local_session_endpoint (app_ns->local_table_index, &sep);
+ app_index = session_lookup_local_endpoint (app_ns->local_table_index, &sep);
SESSION_TEST ((app_index == SESSION_RULES_TABLE_INVALID_INDEX),
"local session endpoint lookup should not work after detach");