#include <vppinfra/bihash_template.c>
#include <vnet/session/session_lookup.h>
#include <vnet/session/session.h>
+#include <vnet/session/application.h>
-static session_lookup_t session_lookup;
+/**
+ * External vector of per transport virtual functions table
+ */
extern transport_proto_vft_t *tp_vfts;
+/**
+ * Network namespace index (i.e., fib index) to session lookup table. We
+ * should have one per network protocol type but for now we only support IP4/6
+ */
+static u32 *fib_index_to_table_index[2];
+
/* *INDENT-OFF* */
/* 16 octets */
typedef CLIB_PACKED (struct {
make_v4_ss_kv (session_kv4_t * kv, ip4_address_t * lcl, ip4_address_t * rmt,
u16 lcl_port, u16 rmt_port, u8 proto)
{
- v4_connection_key_t *key = (v4_connection_key_t *) kv->key;
-
- key->src.as_u32 = lcl->as_u32;
- key->dst.as_u32 = rmt->as_u32;
- key->src_port = lcl_port;
- key->dst_port = rmt_port;
- key->proto = proto;
-
+ kv->key[0] = (u64) rmt->as_u32 << 32 | (u64) lcl->as_u32;
+ kv->key[1] = (u64) proto << 32 | (u64) rmt_port << 16 | (u64) lcl_port;
kv->value = ~0ULL;
}
make_v4_listener_kv (session_kv4_t * kv, ip4_address_t * lcl, u16 lcl_port,
u8 proto)
{
- v4_connection_key_t *key = (v4_connection_key_t *) kv->key;
-
- key->src.as_u32 = lcl->as_u32;
- key->dst.as_u32 = 0;
- key->src_port = lcl_port;
- key->dst_port = 0;
- key->proto = proto;
+ kv->key[0] = (u64) lcl->as_u32;
+ kv->key[1] = (u64) proto << 32 | (u64) lcl_port;
+ kv->value = ~0ULL;
+}
+always_inline void
+make_v4_proxy_kv (session_kv4_t * kv, ip4_address_t * lcl, u8 proto)
+{
+ kv->key[0] = (u64) lcl->as_u32;
+ kv->key[1] = (u64) proto << 32;
kv->value = ~0ULL;
}
always_inline void
-make_v4_ss_kv_from_tc (session_kv4_t * kv, transport_connection_t * t)
+make_v4_ss_kv_from_tc (session_kv4_t * kv, transport_connection_t * tc)
{
- make_v4_ss_kv (kv, &t->lcl_ip.ip4, &t->rmt_ip.ip4, t->lcl_port, t->rmt_port,
- session_type_from_proto_and_ip (t->transport_proto, 1));
+ make_v4_ss_kv (kv, &tc->lcl_ip.ip4, &tc->rmt_ip.ip4, tc->lcl_port,
+ tc->rmt_port, tc->proto);
}
always_inline void
make_v6_ss_kv (session_kv6_t * kv, ip6_address_t * lcl, ip6_address_t * rmt,
u16 lcl_port, u16 rmt_port, u8 proto)
{
- v6_connection_key_t *key = (v6_connection_key_t *) kv->key;
-
- key->src.as_u64[0] = lcl->as_u64[0];
- key->src.as_u64[1] = lcl->as_u64[1];
- key->dst.as_u64[0] = rmt->as_u64[0];
- key->dst.as_u64[1] = rmt->as_u64[1];
- key->src_port = lcl_port;
- key->dst_port = rmt_port;
- key->proto = proto;
- key->unused = 0;
-
+ kv->key[0] = lcl->as_u64[0];
+ kv->key[1] = lcl->as_u64[1];
+ kv->key[2] = rmt->as_u64[0];
+ kv->key[3] = rmt->as_u64[1];
+ kv->key[4] = (u64) proto << 32 | (u64) rmt_port << 16 | (u64) lcl_port;
+ kv->key[5] = 0;
kv->value = ~0ULL;
}
make_v6_listener_kv (session_kv6_t * kv, ip6_address_t * lcl, u16 lcl_port,
u8 proto)
{
- v6_connection_key_t *key = (v6_connection_key_t *) kv->key;
-
- key->src.as_u64[0] = lcl->as_u64[0];
- key->src.as_u64[1] = lcl->as_u64[1];
- key->dst.as_u64[0] = 0;
- key->dst.as_u64[1] = 0;
- key->src_port = lcl_port;
- key->dst_port = 0;
- key->proto = proto;
- key->unused = 0;
-
+ kv->key[0] = lcl->as_u64[0];
+ kv->key[1] = lcl->as_u64[1];
+ kv->key[2] = 0;
+ kv->key[3] = 0;
+ kv->key[4] = (u64) proto << 32 | (u64) lcl_port;
+ kv->key[5] = 0;
kv->value = ~0ULL;
}
always_inline void
-make_v6_ss_kv_from_tc (session_kv6_t * kv, transport_connection_t * t)
+make_v6_proxy_kv (session_kv6_t * kv, ip6_address_t * lcl, u8 proto)
{
- make_v6_ss_kv (kv, &t->lcl_ip.ip6, &t->rmt_ip.ip6, t->lcl_port, t->rmt_port,
- session_type_from_proto_and_ip (t->transport_proto, 0));
+ kv->key[0] = lcl->as_u64[0];
+ kv->key[1] = lcl->as_u64[1];
+ kv->key[2] = 0;
+ kv->key[3] = 0;
+ kv->key[4] = (u64) proto << 32;
+ kv->key[5] = 0;
+ kv->value = ~0ULL;
}
-/*
- * Session lookup key; (src-ip, dst-ip, src-port, dst-port, session-type)
- * Value: (owner thread index << 32 | session_index);
- */
-void
-stream_session_table_add_for_tc (transport_connection_t * tc, u64 value)
+always_inline void
+make_v6_ss_kv_from_tc (session_kv6_t * kv, transport_connection_t * tc)
{
- session_lookup_t *sl = &session_lookup;
- session_kv4_t kv4;
- session_kv6_t kv6;
+ make_v6_ss_kv (kv, &tc->lcl_ip.ip6, &tc->rmt_ip.ip6, tc->lcl_port,
+ tc->rmt_port, tc->proto);
+}
- if (tc->is_ip4)
+static session_table_t *
+session_table_get_or_alloc (u8 fib_proto, u8 fib_index)
+{
+ session_table_t *st;
+ u32 table_index;
+ if (vec_len (fib_index_to_table_index[fib_proto]) <= fib_index)
{
- make_v4_ss_kv_from_tc (&kv4, tc);
- kv4.value = value;
- clib_bihash_add_del_16_8 (&sl->v4_session_hash, &kv4, 1 /* is_add */ );
+ st = session_table_alloc ();
+ table_index = session_table_index (st);
+ vec_validate (fib_index_to_table_index[fib_proto], fib_index);
+ fib_index_to_table_index[fib_proto][fib_index] = table_index;
+ st->active_fib_proto = fib_proto;
+ session_table_init (st, fib_proto);
+ return st;
}
else
{
- make_v6_ss_kv_from_tc (&kv6, tc);
- kv6.value = value;
- clib_bihash_add_del_48_8 (&sl->v6_session_hash, &kv6, 1 /* is_add */ );
+ table_index = fib_index_to_table_index[fib_proto][fib_index];
+ return session_table_get (table_index);
}
}
-void
-stream_session_table_add (session_manager_main_t * smm, stream_session_t * s,
- u64 value)
+static session_table_t *
+session_table_get_or_alloc_for_connection (transport_connection_t * tc)
+{
+ u32 fib_proto;
+ fib_proto = transport_connection_fib_proto (tc);
+ return session_table_get_or_alloc (fib_proto, tc->fib_index);
+}
+
+static session_table_t *
+session_table_get_for_connection (transport_connection_t * tc)
+{
+ u32 fib_proto = transport_connection_fib_proto (tc);
+ if (vec_len (fib_index_to_table_index[fib_proto]) <= tc->fib_index)
+ return 0;
+ return
+ session_table_get (fib_index_to_table_index[fib_proto][tc->fib_index]);
+}
+
+static session_table_t *
+session_table_get_for_fib_index (u32 fib_proto, u32 fib_index)
{
- transport_connection_t *tc;
+ if (vec_len (fib_index_to_table_index[fib_proto]) <= fib_index)
+ return 0;
+ return session_table_get (fib_index_to_table_index[fib_proto][fib_index]);
+}
- tc = tp_vfts[s->session_type].get_connection (s->connection_index,
- s->thread_index);
- stream_session_table_add_for_tc (tc, value);
+u32
+session_lookup_get_index_for_fib (u32 fib_proto, u32 fib_index)
+{
+ if (vec_len (fib_index_to_table_index[fib_proto]) <= fib_index)
+ return SESSION_TABLE_INVALID_INDEX;
+ return fib_index_to_table_index[fib_proto][fib_index];
}
+/**
+ * Add transport connection to a session table
+ *
+ * Session lookup 5-tuple (src-ip, dst-ip, src-port, dst-port, session-type)
+ * is added to requested session table.
+ *
+ * @param tc transport connection to be added
+ * @param value value to be stored
+ *
+ * @return non-zero if failure
+ */
int
-stream_session_table_del_for_tc (transport_connection_t * tc)
+session_lookup_add_connection (transport_connection_t * tc, u64 value)
{
- session_lookup_t *sl = &session_lookup;
+ session_table_t *st;
session_kv4_t kv4;
session_kv6_t kv6;
+ st = session_table_get_or_alloc_for_connection (tc);
+ if (!st)
+ return -1;
if (tc->is_ip4)
{
make_v4_ss_kv_from_tc (&kv4, tc);
- return clib_bihash_add_del_16_8 (&sl->v4_session_hash, &kv4,
- 0 /* is_add */ );
+ kv4.value = value;
+ return clib_bihash_add_del_16_8 (&st->v4_session_hash, &kv4,
+ 1 /* is_add */ );
}
else
{
make_v6_ss_kv_from_tc (&kv6, tc);
- return clib_bihash_add_del_48_8 (&sl->v6_session_hash, &kv6,
- 0 /* is_add */ );
+ kv6.value = value;
+ return clib_bihash_add_del_48_8 (&st->v6_session_hash, &kv6,
+ 1 /* is_add */ );
}
-
- return 0;
}
int
-stream_session_table_del (stream_session_t * s)
+session_lookup_add_session_endpoint (u32 table_index,
+ session_endpoint_t * sep, u64 value)
{
- transport_connection_t *ts;
- ts = tp_vfts[s->session_type].get_connection (s->connection_index,
- s->thread_index);
- return stream_session_table_del_for_tc (ts);
-}
+ session_table_t *st;
+ session_kv4_t kv4;
+ session_kv6_t kv6;
+ st = session_table_get (table_index);
+ if (!st)
+ return -1;
+ if (sep->is_ip4)
+ {
+ make_v4_listener_kv (&kv4, &sep->ip.ip4, sep->port,
+ sep->transport_proto);
+ kv4.value = value;
+ return clib_bihash_add_del_16_8 (&st->v4_session_hash, &kv4, 1);
+ }
+ else
+ {
+ make_v6_listener_kv (&kv6, &sep->ip.ip6, sep->port,
+ sep->transport_proto);
+ kv6.value = value;
+ return clib_bihash_add_del_48_8 (&st->v6_session_hash, &kv6, 1);
+ }
+}
-void
-stream_session_half_open_table_add (transport_connection_t * tc, u64 value)
+int
+session_lookup_del_session_endpoint (u32 table_index,
+ session_endpoint_t * sep)
{
- session_lookup_t *sl = &session_lookup;
+ session_table_t *st;
session_kv4_t kv4;
session_kv6_t kv6;
- if (tc->is_ip4)
+ st = session_table_get (table_index);
+ if (!st)
+ return -1;
+ if (sep->is_ip4)
{
- make_v4_ss_kv_from_tc (&kv4, tc);
- kv4.value = value;
- (void) clib_bihash_add_del_16_8 (&sl->v4_half_open_hash, &kv4,
- 1 /* is_add */ );
+ make_v4_listener_kv (&kv4, &sep->ip.ip4, sep->port,
+ sep->transport_proto);
+ return clib_bihash_add_del_16_8 (&st->v4_session_hash, &kv4, 0);
}
else
{
- make_v6_ss_kv_from_tc (&kv6, tc);
- kv6.value = value;
- (void) clib_bihash_add_del_48_8 (&sl->v6_half_open_hash, &kv6,
- 1 /* is_add */ );
+ make_v6_listener_kv (&kv6, &sep->ip.ip6, sep->port,
+ sep->transport_proto);
+ return clib_bihash_add_del_48_8 (&st->v6_session_hash, &kv6, 0);
}
}
-void
-stream_session_half_open_table_del (transport_connection_t * tc)
+/**
+ * Delete transport connection from session table
+ *
+ * @param table_index session table index
+ * @param tc transport connection to be removed
+ *
+ * @return non-zero if failure
+ */
+int
+session_lookup_del_connection (transport_connection_t * tc)
{
- session_lookup_t *sl = &session_lookup;
+ session_table_t *st;
session_kv4_t kv4;
session_kv6_t kv6;
+ st = session_table_get_for_connection (tc);
+ if (!st)
+ return -1;
if (tc->is_ip4)
{
make_v4_ss_kv_from_tc (&kv4, tc);
- clib_bihash_add_del_16_8 (&sl->v4_half_open_hash, &kv4,
- 0 /* is_add */ );
+ return clib_bihash_add_del_16_8 (&st->v4_session_hash, &kv4,
+ 0 /* is_add */ );
}
else
{
make_v6_ss_kv_from_tc (&kv6, tc);
- clib_bihash_add_del_48_8 (&sl->v6_half_open_hash, &kv6,
- 0 /* is_add */ );
+ return clib_bihash_add_del_48_8 (&st->v6_session_hash, &kv6,
+ 0 /* is_add */ );
+ }
+}
+
+int
+session_lookup_del_session (stream_session_t * s)
+{
+ transport_proto_t tp = session_get_transport_proto (s);
+ transport_connection_t *ts;
+ ts = tp_vfts[tp].get_connection (s->connection_index, s->thread_index);
+ return session_lookup_del_connection (ts);
+}
+
+static u8
+session_lookup_action_index_is_valid (u32 action_index)
+{
+ if (action_index == SESSION_RULES_TABLE_ACTION_ALLOW
+ || action_index == SESSION_RULES_TABLE_INVALID_INDEX)
+ return 0;
+ return 1;
+}
+
+static u64
+session_lookup_action_to_handle (u32 action_index)
+{
+ switch (action_index)
+ {
+ case SESSION_RULES_TABLE_ACTION_DROP:
+ return SESSION_DROP_HANDLE;
+ case SESSION_RULES_TABLE_ACTION_ALLOW:
+ case SESSION_RULES_TABLE_INVALID_INDEX:
+ return SESSION_INVALID_HANDLE;
+ default:
+ /* application index */
+ return action_index;
}
}
+static stream_session_t *
+session_lookup_app_listen_session (u32 app_index, u8 fib_proto,
+ u8 transport_proto)
+{
+ application_t *app;
+ app = application_get_if_valid (app_index);
+ if (!app)
+ return 0;
+
+ 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 app_index;
+ app_index = session_lookup_action_to_handle (action_index);
+ /* Nothing sophisticated for now, action index is app index */
+ return session_lookup_app_listen_session (app_index, fib_proto,
+ transport_proto);
+}
+
+/** UNUSED */
stream_session_t *
-stream_session_lookup_listener4 (ip4_address_t * lcl, u16 lcl_port, u8 proto)
+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_lookup_t *sl = &session_lookup;
- session_kv4_t kv4;
+ session_rules_table_t *srt = &st->session_rules[proto];
+ u32 action_index, app_index;
+ action_index = session_rules_table_lookup4 (srt, lcl, rmt, lcl_port,
+ rmt_port);
+ app_index = session_lookup_action_to_handle (action_index);
+ /* Nothing sophisticated for now, action index is app index */
+ return session_lookup_app_listen_session (app_index, FIB_PROTOCOL_IP4,
+ proto);
+}
+
+/** UNUSED */
+stream_session_t *
+session_lookup_rules_table_session6 (session_table_t * st, u8 proto,
+ ip6_address_t * lcl, u16 lcl_port,
+ ip6_address_t * rmt, u16 rmt_port)
+{
+ session_rules_table_t *srt = &st->session_rules[proto];
+ u32 action_index, app_index;
+ action_index = session_rules_table_lookup6 (srt, lcl, rmt, lcl_port,
+ rmt_port);
+ app_index = session_lookup_action_to_handle (action_index);
+ return session_lookup_app_listen_session (app_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 derived handle if a rule is hit
+ */
+u64
+session_lookup_endpoint_listener (u32 table_index, session_endpoint_t * sep,
+ u8 use_rules)
+{
+ session_rules_table_t *srt;
+ session_table_t *st;
+ u32 ai;
int rv;
- make_v4_listener_kv (&kv4, lcl, lcl_port, proto);
- rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4);
- if (rv == 0)
- return session_manager_get_listener (proto, (u32) kv4.value);
+ st = session_table_get (table_index);
+ if (!st)
+ return SESSION_INVALID_HANDLE;
+ if (sep->is_ip4)
+ {
+ session_kv4_t kv4;
+ ip4_address_t lcl4;
- /* Zero out the lcl ip */
- kv4.key[0] = 0;
- rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4);
- if (rv == 0)
- return session_manager_get_listener (proto, (u32) kv4.value);
+ 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 kv4.value;
+ 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 (session_lookup_action_index_is_valid (ai))
+ return session_lookup_action_to_handle (ai);
+ }
+ }
+ else
+ {
+ session_kv6_t kv6;
+ ip6_address_t lcl6;
- return 0;
+ 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 kv6.value;
+
+ 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 (session_lookup_action_index_is_valid (ai))
+ return session_lookup_action_to_handle (ai);
+ }
+ }
+ return SESSION_INVALID_HANDLE;
}
-/** Looks up a session based on the 5-tuple passed as argument.
+/**
+ * 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.
*
- * First it tries to find an established session, if this fails, it tries
- * finding a listener session if this fails, it tries a lookup with a
- * wildcarded local source (listener bound to all interfaces)
+ * 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 session handle that can be interpreted as an adjacency
*/
-stream_session_t *
-stream_session_lookup4 (ip4_address_t * lcl, ip4_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto)
+u64
+session_lookup_local_endpoint (u32 table_index, session_endpoint_t * sep)
+{
+ session_rules_table_t *srt;
+ session_table_t *st;
+ 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 (session_lookup_action_index_is_valid (ai))
+ return session_lookup_action_to_handle (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);
+ if (rv == 0)
+ return kv4.value;
+
+ /*
+ * Zero out the ip. Logic is that connect to local ips, say
+ * 127.0.0.1:port, can match 0.0.0.0:port
+ */
+ if (ip4_is_local_host (&sep->ip.ip4))
+ {
+ kv4.key[0] = 0;
+ rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
+ if (rv == 0)
+ return kv4.value;
+ }
+ else
+ {
+ kv4.key[0] = 0;
+ }
+
+ /*
+ * Zero out the port and check if we have proxy
+ */
+ kv4.key[1] = 0;
+ rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
+ if (rv == 0)
+ return kv4.value;
+ }
+ else
+ {
+ session_kv6_t kv6;
+ ip6_address_t lcl6;
+
+ 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 (session_lookup_action_index_is_valid (ai))
+ return session_lookup_action_to_handle (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);
+ if (rv == 0)
+ return kv6.value;
+
+ /*
+ * Zero out the ip. Same logic as above.
+ */
+
+ if (ip6_is_local_host (&sep->ip.ip6))
+ {
+ kv6.key[0] = kv6.key[1] = 0;
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
+ if (rv == 0)
+ return kv6.value;
+ }
+ else
+ {
+ kv6.key[0] = kv6.key[1] = 0;
+ }
+
+ /*
+ * Zero out the port. Same logic as above.
+ */
+ kv6.key[4] = kv6.key[5] = 0;
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
+ if (rv == 0)
+ return kv6.value;
+ }
+ return SESSION_INVALID_HANDLE;
+}
+
+static inline stream_session_t *
+session_lookup_listener4_i (session_table_t * st, ip4_address_t * lcl,
+ u16 lcl_port, u8 proto, u8 use_wildcard)
{
- session_lookup_t *sl = &session_lookup;
session_kv4_t kv4;
- stream_session_t *s;
int rv;
- /* Lookup session amongst established ones */
- make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4);
+ /*
+ * First, try a fully formed listener
+ */
+ make_v4_listener_kv (&kv4, lcl, lcl_port, proto);
+ rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
- return stream_session_get_from_handle (kv4.value);
+ return listen_session_get ((u32) kv4.value);
- /* If nothing is found, check if any listener is available */
- if ((s = stream_session_lookup_listener4 (lcl, lcl_port, proto)))
- return s;
+ /*
+ * Zero out the lcl ip and check if any 0/0 port binds have been done
+ */
+ if (use_wildcard)
+ {
+ kv4.key[0] = 0;
+ rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
+ if (rv == 0)
+ return listen_session_get ((u32) kv4.value);
+ }
+ else
+ {
+ kv4.key[0] = 0;
+ }
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4);
+ /*
+ * Zero out port and check if we have a proxy set up for our ip
+ */
+ make_v4_proxy_kv (&kv4, lcl, proto);
+ rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
- return stream_session_get_from_handle (kv4.value);
+ return listen_session_get ((u32) kv4.value);
+
return 0;
}
stream_session_t *
-stream_session_lookup_listener6 (ip6_address_t * lcl, u16 lcl_port, u8 proto)
+session_lookup_listener4 (u32 fib_index, ip4_address_t * lcl, u16 lcl_port,
+ u8 proto)
+{
+ session_table_t *st;
+ st = session_table_get_for_fib_index (FIB_PROTOCOL_IP4, fib_index);
+ if (!st)
+ return 0;
+ return session_lookup_listener4_i (st, lcl, lcl_port, proto, 0);
+}
+
+static stream_session_t *
+session_lookup_listener6_i (session_table_t * st, ip6_address_t * lcl,
+ u16 lcl_port, u8 proto, u8 ip_wildcard)
{
- session_lookup_t *sl = &session_lookup;
session_kv6_t kv6;
int rv;
make_v6_listener_kv (&kv6, lcl, lcl_port, proto);
- rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6);
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
if (rv == 0)
- return session_manager_get_listener (proto, (u32) kv6.value);
+ return listen_session_get ((u32) kv6.value);
/* Zero out the lcl ip */
- kv6.key[0] = kv6.key[1] = 0;
- rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6);
- if (rv == 0)
- return session_manager_get_listener (proto, (u32) kv6.value);
+ if (ip_wildcard)
+ {
+ kv6.key[0] = kv6.key[1] = 0;
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
+ if (rv == 0)
+ return listen_session_get ((u32) kv6.value);
+ }
+ else
+ {
+ kv6.key[0] = kv6.key[1] = 0;
+ }
+ make_v6_proxy_kv (&kv6, lcl, proto);
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
+ if (rv == 0)
+ return listen_session_get ((u32) kv6.value);
return 0;
}
-/* Looks up a session based on the 5-tuple passed as argument.
- * First it tries to find an established session, if this fails, it tries
- * finding a listener session if this fails, it tries a lookup with a
- * wildcarded local source (listener bound to all interfaces) */
stream_session_t *
-stream_session_lookup6 (ip6_address_t * lcl, ip6_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto)
+session_lookup_listener6 (u32 fib_index, ip6_address_t * lcl, u16 lcl_port,
+ u8 proto)
{
- session_lookup_t *sl = &session_lookup;
- session_kv6_t kv6;
- stream_session_t *s;
- int rv;
+ session_table_t *st;
+ st = session_table_get_for_fib_index (FIB_PROTOCOL_IP6, fib_index);
+ if (!st)
+ return 0;
+ return session_lookup_listener6_i (st, lcl, lcl_port, proto, 1);
+}
- make_v6_ss_kv (&kv6, lcl, rmt, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6);
- if (rv == 0)
- return stream_session_get_from_handle (kv6.value);
+/**
+ * Lookup listener, exact or proxy (inaddr_any:0) match
+ */
+stream_session_t *
+session_lookup_listener (u32 table_index, session_endpoint_t * sep)
+{
+ session_table_t *st;
+ st = session_table_get (table_index);
+ if (!st)
+ return 0;
+ if (sep->is_ip4)
+ return session_lookup_listener4_i (st, &sep->ip.ip4, sep->port,
+ sep->transport_proto, 0);
+ else
+ return session_lookup_listener6_i (st, &sep->ip.ip6, sep->port,
+ sep->transport_proto, 0);
+ return 0;
+}
- /* If nothing is found, check if any listener is available */
- if ((s = stream_session_lookup_listener6 (lcl, lcl_port, proto)))
- return s;
+int
+session_lookup_add_half_open (transport_connection_t * tc, u64 value)
+{
+ session_table_t *st;
+ session_kv4_t kv4;
+ session_kv6_t kv6;
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6);
- if (rv == 0)
- return stream_session_get_from_handle (kv6.value);
- return 0;
+ st = session_table_get_or_alloc_for_connection (tc);
+ if (!st)
+ return 0;
+ if (tc->is_ip4)
+ {
+ make_v4_ss_kv_from_tc (&kv4, tc);
+ kv4.value = value;
+ return clib_bihash_add_del_16_8 (&st->v4_half_open_hash, &kv4,
+ 1 /* is_add */ );
+ }
+ else
+ {
+ make_v6_ss_kv_from_tc (&kv6, tc);
+ kv6.value = value;
+ return clib_bihash_add_del_48_8 (&st->v6_half_open_hash, &kv6,
+ 1 /* is_add */ );
+ }
}
-stream_session_t *
-stream_session_lookup_listener (ip46_address_t * lcl, u16 lcl_port, u8 proto)
+int
+session_lookup_del_half_open (transport_connection_t * tc)
{
- switch (proto)
+ session_table_t *st;
+ session_kv4_t kv4;
+ session_kv6_t kv6;
+
+ st = session_table_get_for_connection (tc);
+ if (!st)
+ return -1;
+ if (tc->is_ip4)
{
- case SESSION_TYPE_IP4_UDP:
- case SESSION_TYPE_IP4_TCP:
- return stream_session_lookup_listener4 (&lcl->ip4, lcl_port, proto);
- break;
- case SESSION_TYPE_IP6_UDP:
- case SESSION_TYPE_IP6_TCP:
- return stream_session_lookup_listener6 (&lcl->ip6, lcl_port, proto);
- break;
+ make_v4_ss_kv_from_tc (&kv4, tc);
+ return clib_bihash_add_del_16_8 (&st->v4_half_open_hash, &kv4,
+ 0 /* is_add */ );
+ }
+ else
+ {
+ make_v6_ss_kv_from_tc (&kv6, tc);
+ return clib_bihash_add_del_48_8 (&st->v6_half_open_hash, &kv6,
+ 0 /* is_add */ );
}
- return 0;
}
u64
-stream_session_half_open_lookup_handle (ip46_address_t * lcl,
- ip46_address_t * rmt, u16 lcl_port,
- u16 rmt_port, u8 proto)
+session_lookup_half_open_handle (transport_connection_t * tc)
{
- session_lookup_t *sl = &session_lookup;
+ session_table_t *st;
session_kv4_t kv4;
session_kv6_t kv6;
int rv;
- switch (proto)
+ st = session_table_get_for_fib_index (transport_connection_fib_proto (tc),
+ tc->fib_index);
+ if (!st)
+ return HALF_OPEN_LOOKUP_INVALID_VALUE;
+ if (tc->is_ip4)
{
- case SESSION_TYPE_IP4_UDP:
- case SESSION_TYPE_IP4_TCP:
- make_v4_ss_kv (&kv4, &lcl->ip4, &rmt->ip4, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4);
-
+ make_v4_ss_kv (&kv4, &tc->lcl_ip.ip4, &tc->rmt_ip.ip4, tc->lcl_port,
+ tc->rmt_port, tc->proto);
+ rv = clib_bihash_search_inline_16_8 (&st->v4_half_open_hash, &kv4);
if (rv == 0)
return kv4.value;
-
- return HALF_OPEN_LOOKUP_INVALID_VALUE;
- break;
- case SESSION_TYPE_IP6_UDP:
- case SESSION_TYPE_IP6_TCP:
- make_v6_ss_kv (&kv6, &lcl->ip6, &rmt->ip6, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6);
-
+ }
+ else
+ {
+ make_v6_ss_kv (&kv6, &tc->lcl_ip.ip6, &tc->rmt_ip.ip6, tc->lcl_port,
+ tc->rmt_port, tc->proto);
+ rv = clib_bihash_search_inline_48_8 (&st->v6_half_open_hash, &kv6);
if (rv == 0)
return kv6.value;
-
- return HALF_OPEN_LOOKUP_INVALID_VALUE;
- break;
}
return HALF_OPEN_LOOKUP_INVALID_VALUE;
}
transport_connection_t *
-stream_session_half_open_lookup (ip46_address_t * lcl, ip46_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto)
+session_lookup_half_open_connection (u64 handle, u8 proto, u8 is_ip4)
{
- u64 handle;
- handle =
- stream_session_half_open_lookup_handle (lcl, rmt, lcl_port, rmt_port,
- proto);
+ u32 sst;
+
if (handle != HALF_OPEN_LOOKUP_INVALID_VALUE)
- return tp_vfts[proto].get_half_open (handle & 0xFFFFFFFF);
+ {
+ sst = session_type_from_proto_and_ip (proto, is_ip4);
+ return tp_vfts[sst].get_half_open (handle & 0xFFFFFFFF);
+ }
return 0;
}
-always_inline stream_session_t *
-stream_session_get_tsi (u64 ti_and_si, u32 thread_index)
-{
- ASSERT ((u32) (ti_and_si >> 32) == thread_index);
- return pool_elt_at_index (session_manager_main.sessions[thread_index],
- ti_and_si & 0xFFFFFFFFULL);
-}
-
+/**
+ * Lookup connection with ip4 and transport layer information
+ *
+ * This is used on the fast path so it needs to be fast. Thereby,
+ * duplication of code and 'hacks' allowed.
+ *
+ * The lookup is incremental and returns whenever something is matched. The
+ * steps are:
+ * - Try to find an established 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
+ * @param lcl local ip4 address
+ * @param rmt remote ip4 address
+ * @param lcl_port local port
+ * @param rmt_port remote port
+ * @param proto transport protocol (e.g., tcp, udp)
+ * @param thread_index thread index for request
+ * @param is_filtered return flag that indicates if connection was filtered.
+ *
+ * @return pointer to transport connection, if one is found, 0 otherwise
+ */
transport_connection_t *
-stream_session_lookup_transport_wt4 (ip4_address_t * lcl, ip4_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto,
- u32 my_thread_index)
+session_lookup_connection_wt4 (u32 fib_index, ip4_address_t * lcl,
+ ip4_address_t * rmt, u16 lcl_port,
+ u16 rmt_port, u8 proto, u32 thread_index,
+ u8 * is_filtered)
{
- session_lookup_t *sl = &session_lookup;
+ session_table_t *st;
session_kv4_t kv4;
stream_session_t *s;
+ u32 action_index;
int rv;
- /* Lookup session amongst established ones */
+ st = session_table_get_for_fib_index (FIB_PROTOCOL_IP4, fib_index);
+ if (PREDICT_FALSE (!st))
+ return 0;
+
+ /*
+ * Lookup session amongst established ones
+ */
make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4);
+ rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
{
- s = stream_session_get_tsi (kv4.value, my_thread_index);
- return tp_vfts[s->session_type].get_connection (s->connection_index,
- my_thread_index);
+ ASSERT ((u32) (kv4.value >> 32) == thread_index);
+ s = session_get (kv4.value & 0xFFFFFFFFULL, thread_index);
+ return tp_vfts[proto].get_connection (s->connection_index,
+ thread_index);
}
- /* If nothing is found, check if any listener is available */
- s = stream_session_lookup_listener4 (lcl, lcl_port, proto);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
-
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4);
+ /*
+ * Try half-open connections
+ */
+ rv = clib_bihash_search_inline_16_8 (&st->v4_half_open_hash, &kv4);
if (rv == 0)
return tp_vfts[proto].get_half_open (kv4.value & 0xFFFFFFFF);
+
+ /*
+ * Check the session rules table
+ */
+ action_index = session_rules_table_lookup4 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (session_lookup_action_index_is_valid (action_index))
+ {
+ if ((*is_filtered = (action_index == SESSION_RULES_TABLE_ACTION_DROP)))
+ return 0;
+ if ((s = session_lookup_action_to_session (action_index,
+ FIB_PROTOCOL_IP4, proto)))
+ return tp_vfts[proto].get_listener (s->connection_index);
+ return 0;
+ }
+
+ /*
+ * If nothing is found, check if any listener is available
+ */
+ s = session_lookup_listener4_i (st, lcl, lcl_port, proto, 1);
+ if (s)
+ return tp_vfts[proto].get_listener (s->connection_index);
+
return 0;
}
+/**
+ * Lookup connection with ip4 and transport layer information
+ *
+ * Not optimized. This is used on the fast path so it needs to be fast.
+ * Thereby, duplication of code and 'hacks' allowed. Lookup logic is identical
+ * to that of @ref session_lookup_connection_wt4
+ *
+ * @param fib_index index of the fib wherein the connection was received
+ * @param lcl local ip4 address
+ * @param rmt remote ip4 address
+ * @param lcl_port local port
+ * @param rmt_port remote port
+ * @param proto transport protocol (e.g., tcp, udp)
+ *
+ * @return pointer to transport connection, if one is found, 0 otherwise
+ */
transport_connection_t *
-stream_session_lookup_transport4 (ip4_address_t * lcl, ip4_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto)
+session_lookup_connection4 (u32 fib_index, ip4_address_t * lcl,
+ ip4_address_t * rmt, u16 lcl_port, u16 rmt_port,
+ u8 proto)
{
- session_lookup_t *sl = &session_lookup;
+ session_table_t *st;
session_kv4_t kv4;
stream_session_t *s;
+ u32 action_index;
int rv;
- /* Lookup session amongst established ones */
+ st = session_table_get_for_fib_index (FIB_PROTOCOL_IP4, fib_index);
+ if (PREDICT_FALSE (!st))
+ return 0;
+
+ /*
+ * Lookup session amongst established ones
+ */
make_v4_ss_kv (&kv4, lcl, rmt, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_16_8 (&sl->v4_session_hash, &kv4);
+ rv = clib_bihash_search_inline_16_8 (&st->v4_session_hash, &kv4);
if (rv == 0)
{
- s = stream_session_get_from_handle (kv4.value);
- return tp_vfts[s->session_type].get_connection (s->connection_index,
- s->thread_index);
+ s = session_get_from_handle (kv4.value);
+ return tp_vfts[proto].get_connection (s->connection_index,
+ s->thread_index);
}
- /* If nothing is found, check if any listener is available */
- s = stream_session_lookup_listener4 (lcl, lcl_port, proto);
+ /*
+ * Try half-open connections
+ */
+ rv = clib_bihash_search_inline_16_8 (&st->v4_half_open_hash, &kv4);
+ if (rv == 0)
+ return tp_vfts[proto].get_half_open (kv4.value & 0xFFFFFFFF);
+
+ /*
+ * Check the session rules table
+ */
+ action_index = session_rules_table_lookup4 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (session_lookup_action_index_is_valid (action_index))
+ {
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if ((s = session_lookup_action_to_session (action_index,
+ FIB_PROTOCOL_IP4, proto)))
+ return tp_vfts[proto].get_listener (s->connection_index);
+ return 0;
+ }
+
+ /*
+ * If nothing is found, check if any listener is available
+ */
+ s = session_lookup_listener4_i (st, lcl, lcl_port, proto, 1);
if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
+ return tp_vfts[proto].get_listener (s->connection_index);
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_16_8 (&sl->v4_half_open_hash, &kv4);
+ return 0;
+}
+
+/**
+ * Lookup session with ip4 and transport layer information
+ *
+ * Important note: this may look into another thread's pool table and
+ * register as 'peeker'. Caller should call @ref session_pool_remove_peeker as
+ * if needed as soon as possible.
+ *
+ * Lookup logic is similar to that of @ref session_lookup_connection_wt4 but
+ * this returns a session as opposed to a transport connection and it does not
+ * try to lookup half-open sessions.
+ *
+ * Typically used by dgram connections
+ */
+stream_session_t *
+session_lookup_safe4 (u32 fib_index, ip4_address_t * lcl, ip4_address_t * rmt,
+ u16 lcl_port, u16 rmt_port, u8 proto)
+{
+ 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
+ */
+ 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 tp_vfts[proto].get_half_open (kv4.value & 0xFFFFFFFF);
+ return session_get_from_handle_safe (kv4.value);
+
+ /*
+ * Check the session rules table
+ */
+ action_index = session_rules_table_lookup4 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (session_lookup_action_index_is_valid (action_index))
+ {
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ return session_lookup_action_to_session (action_index, FIB_PROTOCOL_IP4,
+ proto);
+ }
+
+ /*
+ * If nothing is found, check if any listener is available
+ */
+ if ((s = session_lookup_listener4_i (st, lcl, lcl_port, proto, 1)))
+ return s;
+
return 0;
}
+/**
+ * Lookup connection with ip6 and transport layer information
+ *
+ * This is used on the fast path so it needs to be fast. Thereby,
+ * duplication of code and 'hacks' allowed.
+ *
+ * The lookup is incremental and returns whenever something is matched. The
+ * steps are:
+ * - Try to find an established 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
+ * @param lcl local ip6 address
+ * @param rmt remote ip6 address
+ * @param lcl_port local port
+ * @param rmt_port remote port
+ * @param proto transport protocol (e.g., tcp, udp)
+ * @param thread_index thread index for request
+ *
+ * @return pointer to transport connection, if one is found, 0 otherwise
+ */
transport_connection_t *
-stream_session_lookup_transport_wt6 (ip6_address_t * lcl, ip6_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto,
- u32 my_thread_index)
+session_lookup_connection_wt6 (u32 fib_index, ip6_address_t * lcl,
+ ip6_address_t * rmt, u16 lcl_port,
+ u16 rmt_port, u8 proto, u32 thread_index,
+ u8 * is_filtered)
{
- session_lookup_t *sl = &session_lookup;
+ 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);
+ if (PREDICT_FALSE (!st))
+ return 0;
+
make_v6_ss_kv (&kv6, lcl, rmt, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6);
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
if (rv == 0)
{
- s = stream_session_get_tsi (kv6.value, my_thread_index);
- return tp_vfts[s->session_type].get_connection (s->connection_index,
- my_thread_index);
+ ASSERT ((u32) (kv6.value >> 32) == thread_index);
+ s = session_get (kv6.value & 0xFFFFFFFFULL, thread_index);
+ return tp_vfts[proto].get_connection (s->connection_index,
+ thread_index);
}
- /* If nothing is found, check if any listener is available */
- s = stream_session_lookup_listener6 (lcl, lcl_port, proto);
- if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
-
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6);
+ /* Try half-open connections */
+ rv = clib_bihash_search_inline_48_8 (&st->v6_half_open_hash, &kv6);
if (rv == 0)
return tp_vfts[proto].get_half_open (kv6.value & 0xFFFFFFFF);
+ /* Check the session rules table */
+ action_index = session_rules_table_lookup6 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (session_lookup_action_index_is_valid (action_index))
+ {
+ if ((*is_filtered = (action_index == SESSION_RULES_TABLE_ACTION_DROP)))
+ return 0;
+ if ((s = session_lookup_action_to_session (action_index,
+ FIB_PROTOCOL_IP6, proto)))
+ return tp_vfts[proto].get_listener (s->connection_index);
+ return 0;
+ }
+
+ /* If nothing is found, check if any listener is available */
+ s = session_lookup_listener6_i (st, lcl, lcl_port, proto, 1);
+ if (s)
+ return tp_vfts[proto].get_listener (s->connection_index);
+
return 0;
}
+/**
+ * Lookup connection with ip6 and transport layer information
+ *
+ * Not optimized. This is used on the fast path so it needs to be fast.
+ * Thereby, duplication of code and 'hacks' allowed. Lookup logic is identical
+ * to that of @ref session_lookup_connection_wt4
+ *
+ * @param fib_index index of the fib wherein the connection was received
+ * @param lcl local ip6 address
+ * @param rmt remote ip6 address
+ * @param lcl_port local port
+ * @param rmt_port remote port
+ * @param proto transport protocol (e.g., tcp, udp)
+ *
+ * @return pointer to transport connection, if one is found, 0 otherwise
+ */
transport_connection_t *
-stream_session_lookup_transport6 (ip6_address_t * lcl, ip6_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto)
+session_lookup_connection6 (u32 fib_index, ip6_address_t * lcl,
+ ip6_address_t * rmt, u16 lcl_port, u16 rmt_port,
+ u8 proto)
{
- session_lookup_t *sl = &session_lookup;
+ 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);
+ if (PREDICT_FALSE (!st))
+ return 0;
+
make_v6_ss_kv (&kv6, lcl, rmt, lcl_port, rmt_port, proto);
- rv = clib_bihash_search_inline_48_8 (&sl->v6_session_hash, &kv6);
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
+ if (rv == 0)
+ {
+ s = session_get_from_handle (kv6.value);
+ return tp_vfts[proto].get_connection (s->connection_index,
+ s->thread_index);
+ }
+
+ /* Try half-open connections */
+ rv = clib_bihash_search_inline_48_8 (&st->v6_half_open_hash, &kv6);
if (rv == 0)
+ return tp_vfts[proto].get_half_open (kv6.value & 0xFFFFFFFF);
+
+ /* Check the session rules table */
+ action_index = session_rules_table_lookup6 (&st->session_rules[proto], lcl,
+ rmt, lcl_port, rmt_port);
+ if (session_lookup_action_index_is_valid (action_index))
{
- s = stream_session_get_from_handle (kv6.value);
- return tp_vfts[s->session_type].get_connection (s->connection_index,
- s->thread_index);
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ if ((s = session_lookup_action_to_session (action_index,
+ FIB_PROTOCOL_IP6, proto)))
+ return tp_vfts[proto].get_listener (s->connection_index);
+ return 0;
}
/* If nothing is found, check if any listener is available */
- s = stream_session_lookup_listener6 (lcl, lcl_port, proto);
+ s = session_lookup_listener6_i (st, lcl, lcl_port, proto, 1);
if (s)
- return tp_vfts[s->session_type].get_listener (s->connection_index);
+ return tp_vfts[proto].get_listener (s->connection_index);
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_48_8 (&sl->v6_half_open_hash, &kv6);
+ return 0;
+}
+
+/**
+ * Lookup session with ip6 and transport layer information
+ *
+ * Important note: this may look into another thread's pool table and
+ * register as 'peeker'. Caller should call @ref session_pool_remove_peeker as
+ * if needed as soon as possible.
+ *
+ * Lookup logic is similar to that of @ref session_lookup_connection_wt6 but
+ * this returns a session as opposed to a transport connection and it does not
+ * try to lookup half-open sessions.
+ *
+ * Typically used by dgram connections
+ */
+stream_session_t *
+session_lookup_safe6 (u32 fib_index, ip6_address_t * lcl, ip6_address_t * rmt,
+ u16 lcl_port, u16 rmt_port, u8 proto)
+{
+ 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);
+ if (PREDICT_FALSE (!st))
+ return 0;
+
+ make_v6_ss_kv (&kv6, lcl, rmt, lcl_port, rmt_port, proto);
+ rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
if (rv == 0)
- return tp_vfts[proto].get_half_open (kv6.value & 0xFFFFFFFF);
+ 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 (session_lookup_action_index_is_valid (action_index))
+ {
+ if (action_index == SESSION_RULES_TABLE_ACTION_DROP)
+ return 0;
+ return session_lookup_action_to_session (action_index, FIB_PROTOCOL_IP6,
+ proto);
+ }
+ /* If nothing is found, check if any listener is available */
+ if ((s = session_lookup_listener6_i (st, lcl, lcl_port, proto, 1)))
+ return s;
return 0;
}
-#define foreach_hash_table_parameter \
- _(v4,session,buckets,20000) \
- _(v4,session,memory,(64<<20)) \
- _(v6,session,buckets,20000) \
- _(v6,session,memory,(64<<20)) \
- _(v4,halfopen,buckets,20000) \
- _(v4,halfopen,memory,(64<<20)) \
- _(v6,halfopen,buckets,20000) \
- _(v6,halfopen,memory,(64<<20))
+clib_error_t *
+vnet_session_rule_add_del (session_rule_add_del_args_t * args)
+{
+ app_namespace_t *app_ns = app_namespace_get (args->appns_index);
+ session_rules_table_t *srt;
+ session_table_t *st;
+ u32 fib_index;
+ u8 fib_proto;
+ clib_error_t *error;
+
+ if (!app_ns)
+ return clib_error_return_code (0, VNET_API_ERROR_APP_INVALID_NS, 0,
+ "invalid app ns");
+ if (args->scope > 3)
+ return clib_error_return_code (0, VNET_API_ERROR_INVALID_VALUE, 0,
+ "invalid scope");
+ if (args->transport_proto != TRANSPORT_PROTO_TCP
+ && args->transport_proto != TRANSPORT_PROTO_UDP)
+ return clib_error_return_code (0, VNET_API_ERROR_INVALID_VALUE, 0,
+ "invalid transport proto");
+ if ((args->scope & SESSION_RULE_SCOPE_GLOBAL) || args->scope == 0)
+ {
+ fib_proto = args->table_args.rmt.fp_proto;
+ fib_index = app_namespace_get_fib_index (app_ns, fib_proto);
+ st = session_table_get_for_fib_index (fib_proto, fib_index);
+ srt = &st->session_rules[args->transport_proto];
+ if ((error = session_rules_table_add_del (srt, &args->table_args)))
+ {
+ clib_error_report (error);
+ return error;
+ }
+ }
+ 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);
+ }
+ return error;
+}
+
+/**
+ * Mark (global) tables as pertaining to app ns
+ */
+void
+session_lookup_set_tables_appns (app_namespace_t * app_ns)
+{
+ session_table_t *st;
+ u32 fib_index;
+ u8 fp;
+
+ for (fp = 0; fp < ARRAY_LEN (fib_index_to_table_index); fp++)
+ {
+ fib_index = app_namespace_get_fib_index (app_ns, fp);
+ st = session_table_get_for_fib_index (fp, fib_index);
+ if (st)
+ st->appns_index = app_namespace_index (app_ns);
+ }
+}
+
+u8 *
+format_ip4_session_lookup_kvp (u8 * s, va_list * args)
+{
+ clib_bihash_kv_16_8_t *kvp = va_arg (*args, clib_bihash_kv_16_8_t *);
+ u32 is_local = va_arg (*args, u32), app_index, session_index;
+ u8 *app_name, *str = 0;
+ stream_session_t *session;
+ v4_connection_key_t *key = (v4_connection_key_t *) kvp->key;
+
+ if (!is_local)
+ {
+ session = session_get_from_handle (kvp->value);
+ app_name = application_name_from_index (session->app_index);
+ str = format (0, "[%U] %U:%d->%U:%d", format_transport_proto_short,
+ key->proto, format_ip4_address, &key->src,
+ clib_net_to_host_u16 (key->src_port), format_ip4_address,
+ &key->dst, clib_net_to_host_u16 (key->dst_port));
+ s = format (s, "%-40v%-30v", str, app_name);
+ }
+ else
+ {
+ local_session_parse_handle (kvp->value, &app_index, &session_index);
+ app_name = application_name_from_index (app_index);
+ str = format (0, "[%U] %U:%d", format_transport_proto_short, key->proto,
+ format_ip4_address, &key->src,
+ clib_net_to_host_u16 (key->src_port));
+ s = format (s, "%-30v%-30v", str, app_name);
+ }
+ vec_free (app_name);
+ return s;
+}
+
+typedef struct _ip4_session_table_show_ctx_t
+{
+ vlib_main_t *vm;
+ u8 is_local;
+} ip4_session_table_show_ctx_t;
+
+static int
+ip4_session_table_show (clib_bihash_kv_16_8_t * kvp, void *arg)
+{
+ ip4_session_table_show_ctx_t *ctx = arg;
+ vlib_cli_output (ctx->vm, "%U", format_ip4_session_lookup_kvp, kvp,
+ ctx->is_local);
+ return 1;
+}
+
+void
+session_lookup_show_table_entries (vlib_main_t * vm, session_table_t * table,
+ u8 type, u8 is_local)
+{
+ ip4_session_table_show_ctx_t ctx = {
+ .vm = vm,
+ .is_local = is_local,
+ };
+ if (!is_local)
+ vlib_cli_output (vm, "%-40s%-30s", "Session", "Application");
+ else
+ vlib_cli_output (vm, "%-30s%-30s", "Listener", "Application");
+ switch (type)
+ {
+ /* main table v4 */
+ case 0:
+ ip4_session_table_walk (&table->v4_session_hash, ip4_session_table_show,
+ &ctx);
+ break;
+ default:
+ clib_warning ("not supported");
+ }
+}
+
+static clib_error_t *
+session_rule_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ u32 proto = ~0, lcl_port, rmt_port, action = 0, lcl_plen = 0, rmt_plen = 0;
+ u32 appns_index, scope = 0;
+ ip46_address_t lcl_ip, rmt_ip;
+ u8 is_ip4 = 1, conn_set = 0;
+ u8 fib_proto, is_add = 1, *ns_id = 0;
+ u8 *tag = 0;
+ app_namespace_t *app_ns;
+ clib_error_t *error;
+
+ memset (&lcl_ip, 0, sizeof (lcl_ip));
+ memset (&rmt_ip, 0, sizeof (rmt_ip));
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "del"))
+ is_add = 0;
+ else if (unformat (input, "add"))
+ ;
+ else if (unformat (input, "appns %_%v%_", &ns_id))
+ ;
+ else if (unformat (input, "scope global"))
+ scope = SESSION_RULE_SCOPE_GLOBAL;
+ else if (unformat (input, "scope local"))
+ scope = SESSION_RULE_SCOPE_LOCAL;
+ else if (unformat (input, "scope all"))
+ scope = SESSION_RULE_SCOPE_LOCAL | SESSION_RULE_SCOPE_GLOBAL;
+ else if (unformat (input, "proto %U", unformat_transport_proto, &proto))
+ ;
+ else if (unformat (input, "%U/%d %d %U/%d %d", unformat_ip4_address,
+ &lcl_ip.ip4, &lcl_plen, &lcl_port,
+ unformat_ip4_address, &rmt_ip.ip4, &rmt_plen,
+ &rmt_port))
+ {
+ is_ip4 = 1;
+ conn_set = 1;
+ }
+ else if (unformat (input, "%U/%d %d %U/%d %d", unformat_ip6_address,
+ &lcl_ip.ip6, &lcl_plen, &lcl_port,
+ unformat_ip6_address, &rmt_ip.ip6, &rmt_plen,
+ &rmt_port))
+ {
+ is_ip4 = 0;
+ conn_set = 1;
+ }
+ else if (unformat (input, "action %d", &action))
+ ;
+ else if (unformat (input, "tag %_%v%_", &tag))
+ ;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ if (proto == ~0)
+ {
+ vlib_cli_output (vm, "proto must be set");
+ return 0;
+ }
+ if (is_add && !conn_set && action == ~0)
+ {
+ vlib_cli_output (vm, "connection and action must be set for add");
+ return 0;
+ }
+ if (!is_add && !tag && !conn_set)
+ {
+ vlib_cli_output (vm, "connection or tag must be set for delete");
+ return 0;
+ }
+ if (vec_len (tag) > SESSION_RULE_TAG_MAX_LEN)
+ {
+ vlib_cli_output (vm, "tag too long (max u64)");
+ return 0;
+ }
+
+ if (ns_id)
+ {
+ app_ns = app_namespace_get_from_id (ns_id);
+ if (!app_ns)
+ {
+ vlib_cli_output (vm, "namespace %v does not exist", ns_id);
+ return 0;
+ }
+ }
+ else
+ {
+ app_ns = app_namespace_get_default ();
+ }
+ appns_index = app_namespace_index (app_ns);
+
+ fib_proto = is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
+ session_rule_add_del_args_t args = {
+ .table_args.lcl.fp_addr = lcl_ip,
+ .table_args.lcl.fp_len = lcl_plen,
+ .table_args.lcl.fp_proto = fib_proto,
+ .table_args.rmt.fp_addr = rmt_ip,
+ .table_args.rmt.fp_len = rmt_plen,
+ .table_args.rmt.fp_proto = fib_proto,
+ .table_args.lcl_port = lcl_port,
+ .table_args.rmt_port = rmt_port,
+ .table_args.action_index = action,
+ .table_args.is_add = is_add,
+ .table_args.tag = tag,
+ .appns_index = appns_index,
+ .scope = scope,
+ };
+ error = vnet_session_rule_add_del (&args);
+ vec_free (tag);
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (session_rule_command, static) =
+{
+ .path = "session rule",
+ .short_help = "session rule [add|del] appns <ns_id> proto <proto> "
+ "<lcl-ip/plen> <lcl-port> <rmt-ip/plen> <rmt-port> action <action>",
+ .function = session_rule_command_fn,
+};
+/* *INDENT-ON* */
+
+void
+session_lookup_dump_rules_table (u32 fib_index, u8 fib_proto,
+ u8 transport_proto)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ session_rules_table_t *srt;
+ session_table_t *st;
+ st = session_table_get_for_fib_index (fib_index, fib_proto);
+ srt = &st->session_rules[transport_proto];
+ session_rules_table_cli_dump (vm, srt, fib_proto);
+}
+
+void
+session_lookup_dump_local_rules_table (u32 table_index, u8 fib_proto,
+ u8 transport_proto)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ session_rules_table_t *srt;
+ session_table_t *st;
+ st = session_table_get (table_index);
+ srt = &st->session_rules[transport_proto];
+ session_rules_table_cli_dump (vm, srt, fib_proto);
+}
+
+static clib_error_t *
+show_session_rules_command_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ u32 transport_proto = ~0, lcl_port, rmt_port, lcl_plen, rmt_plen;
+ u32 fib_index, scope = 0;
+ ip46_address_t lcl_ip, rmt_ip;
+ u8 is_ip4 = 1, show_one = 0;
+ app_namespace_t *app_ns;
+ session_rules_table_t *srt;
+ session_table_t *st;
+ u8 *ns_id = 0, fib_proto;
+
+ memset (&lcl_ip, 0, sizeof (lcl_ip));
+ memset (&rmt_ip, 0, sizeof (rmt_ip));
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%U", unformat_transport_proto, &transport_proto))
+ ;
+ else if (unformat (input, "appns %_%v%_", &ns_id))
+ ;
+ else if (unformat (input, "scope global"))
+ scope = 1;
+ else if (unformat (input, "scope local"))
+ scope = 2;
+ else if (unformat (input, "%U/%d %d %U/%d %d", unformat_ip4_address,
+ &lcl_ip.ip4, &lcl_plen, &lcl_port,
+ unformat_ip4_address, &rmt_ip.ip4, &rmt_plen,
+ &rmt_port))
+ {
+ is_ip4 = 1;
+ show_one = 1;
+ }
+ else if (unformat (input, "%U/%d %d %U/%d %d", unformat_ip6_address,
+ &lcl_ip.ip6, &lcl_plen, &lcl_port,
+ unformat_ip6_address, &rmt_ip.ip6, &rmt_plen,
+ &rmt_port))
+ {
+ is_ip4 = 0;
+ show_one = 1;
+ }
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ if (transport_proto == ~0)
+ {
+ vlib_cli_output (vm, "transport proto must be set");
+ return 0;
+ }
+
+ if (ns_id)
+ {
+ app_ns = app_namespace_get_from_id (ns_id);
+ if (!app_ns)
+ {
+ vlib_cli_output (vm, "appns %v doesn't exist", ns_id);
+ return 0;
+ }
+ }
+ else
+ {
+ app_ns = app_namespace_get_default ();
+ }
+
+ if (scope == 1 || scope == 0)
+ {
+ fib_proto = is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
+ fib_index = is_ip4 ? app_ns->ip4_fib_index : app_ns->ip6_fib_index;
+ st = session_table_get_for_fib_index (fib_proto, fib_index);
+ }
+ else
+ {
+ st = app_namespace_get_local_table (app_ns);
+ }
+
+ if (show_one)
+ {
+ srt = &st->session_rules[transport_proto];
+ session_rules_table_show_rule (vm, srt, &lcl_ip, lcl_port, &rmt_ip,
+ rmt_port, is_ip4);
+ return 0;
+ }
+
+ vlib_cli_output (vm, "%U rules table", format_transport_proto,
+ transport_proto);
+ srt = &st->session_rules[transport_proto];
+ session_rules_table_cli_dump (vm, srt, FIB_PROTOCOL_IP4);
+ session_rules_table_cli_dump (vm, srt, FIB_PROTOCOL_IP6);
+
+ vec_free (ns_id);
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_session_rules_command, static) =
+{
+ .path = "show session rules",
+ .short_help = "show session rules [<proto> appns <id> <lcl-ip/plen> "
+ "<lcl-port> <rmt-ip/plen> <rmt-port> scope <scope>]",
+ .function = show_session_rules_command_fn,
+};
+/* *INDENT-ON* */
void
session_lookup_init (void)
{
- session_lookup_t *sl = &session_lookup;
-
-#define _(af,table,parm,value) \
- u32 configured_##af##_##table##_table_##parm = value;
- foreach_hash_table_parameter;
-#undef _
-
-#define _(af,table,parm,value) \
- if (session_manager_main.configured_##af##_##table##_table_##parm) \
- configured_##af##_##table##_table_##parm = \
- session_manager_main.configured_##af##_##table##_table_##parm;
- foreach_hash_table_parameter;
-#undef _
-
- clib_bihash_init_16_8 (&sl->v4_session_hash, "v4 session table",
- configured_v4_session_table_buckets,
- configured_v4_session_table_memory);
- clib_bihash_init_48_8 (&sl->v6_session_hash, "v6 session table",
- configured_v6_session_table_buckets,
- configured_v6_session_table_memory);
- clib_bihash_init_16_8 (&sl->v4_half_open_hash, "v4 half-open table",
- configured_v4_halfopen_table_buckets,
- configured_v4_halfopen_table_memory);
- clib_bihash_init_48_8 (&sl->v6_half_open_hash, "v6 half-open table",
- configured_v6_halfopen_table_buckets,
- configured_v6_halfopen_table_memory);
+ /*
+ * Allocate default table and map it to fib_index 0
+ */
+ session_table_t *st = session_table_alloc ();
+ vec_validate (fib_index_to_table_index[FIB_PROTOCOL_IP4], 0);
+ fib_index_to_table_index[FIB_PROTOCOL_IP4][0] = session_table_index (st);
+ st->active_fib_proto = FIB_PROTOCOL_IP4;
+ session_table_init (st, FIB_PROTOCOL_IP4);
+ st = session_table_alloc ();
+ vec_validate (fib_index_to_table_index[FIB_PROTOCOL_IP6], 0);
+ fib_index_to_table_index[FIB_PROTOCOL_IP6][0] = session_table_index (st);
+ st->active_fib_proto = FIB_PROTOCOL_IP6;
+ session_table_init (st, FIB_PROTOCOL_IP6);
}
/*
Code Review / vpp.git / blobdiff