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authorFlorin Coras <fcoras@cisco.com>2017-10-02 00:18:51 -0700
committerDave Barach <openvpp@barachs.net>2017-10-16 21:41:11 +0000
commit3cbc04bea02fc60471dfe0c671ede3ca42c118c3 (patch)
tree6128beab7dfb01c6221da2f675078078170e75ac /src/vnet/session/session_lookup.c
parent0cb01bde499979066389975ba81670764914cbc2 (diff)
udp: refactor udp code
Change-Id: I44d5c9df7c49b8d4d5677c6d319033b2da3e6b80 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vnet/session/session_lookup.c')
-rw-r--r--src/vnet/session/session_lookup.c96
1 files changed, 67 insertions, 29 deletions
diff --git a/src/vnet/session/session_lookup.c b/src/vnet/session/session_lookup.c
index 796d93ec33e..740c5a6d533 100644
--- a/src/vnet/session/session_lookup.c
+++ b/src/vnet/session/session_lookup.c
@@ -116,7 +116,7 @@ always_inline void
make_v4_ss_kv_from_tc (session_kv4_t * kv, transport_connection_t * t)
{
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));
+ session_type_from_proto_and_ip (t->proto, 1));
}
always_inline void
@@ -159,7 +159,7 @@ always_inline void
make_v6_ss_kv_from_tc (session_kv6_t * kv, transport_connection_t * t)
{
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));
+ session_type_from_proto_and_ip (t->proto, 0));
}
@@ -339,7 +339,7 @@ session_lookup_del_session (stream_session_t * s)
return session_lookup_del_connection (ts);
}
-u32
+u64
session_lookup_session_endpoint (u32 table_index, session_endpoint_t * sep)
{
session_table_t *st;
@@ -349,14 +349,14 @@ session_lookup_session_endpoint (u32 table_index, session_endpoint_t * sep)
st = session_table_get (table_index);
if (!st)
- return SESSION_INVALID_INDEX;
+ return SESSION_INVALID_HANDLE;
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 (u32) kv4.value;
+ return kv4.value;
}
else
{
@@ -364,9 +364,43 @@ session_lookup_session_endpoint (u32 table_index, session_endpoint_t * sep)
sep->transport_proto);
rv = clib_bihash_search_inline_48_8 (&st->v6_session_hash, &kv6);
if (rv == 0)
- return (u32) kv6.value;
+ return kv6.value;
}
- return SESSION_INVALID_INDEX;
+ 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;
+ 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);
+ }
+ 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);
+ }
+ return 0;
}
u32
@@ -562,7 +596,7 @@ session_lookup_half_open_handle (transport_connection_t * tc)
if (tc->is_ip4)
{
make_v4_ss_kv (&kv4, &tc->lcl_ip.ip4, &tc->rmt_ip.ip4, tc->lcl_port,
- tc->rmt_port, tc->transport_proto);
+ tc->rmt_port, tc->proto);
rv = clib_bihash_search_inline_16_8 (&st->v4_half_open_hash, &kv4);
if (rv == 0)
return kv4.value;
@@ -570,7 +604,7 @@ session_lookup_half_open_handle (transport_connection_t * tc)
else
{
make_v6_ss_kv (&kv6, &tc->lcl_ip.ip6, &tc->rmt_ip.ip6, tc->lcl_port,
- tc->rmt_port, tc->transport_proto);
+ tc->rmt_port, tc->proto);
rv = clib_bihash_search_inline_48_8 (&st->v6_half_open_hash, &kv6);
if (rv == 0)
return kv6.value;
@@ -713,12 +747,19 @@ session_lookup_connection4 (u32 fib_index, ip4_address_t * lcl,
/**
* Lookup session with ip4 and transport layer information
*
- * Lookup logic is identical to that of @ref session_lookup_connection_wt4 but
- * this returns a session as opposed to a transport connection;
+ * 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_lookup4 (u32 fib_index, ip4_address_t * lcl, ip4_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto)
+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;
@@ -733,16 +774,11 @@ session_lookup4 (u32 fib_index, ip4_address_t * lcl, ip4_address_t * rmt,
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 (kv4.value);
+ return session_get_from_handle_safe (kv4.value);
/* If nothing is found, check if any listener is available */
if ((s = session_lookup_listener4_i (st, lcl, lcl_port, proto)))
return s;
-
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_16_8 (&st->v4_half_open_hash, &kv4);
- if (rv == 0)
- return session_get_from_handle (kv4.value);
return 0;
}
@@ -868,12 +904,19 @@ session_lookup_connection6 (u32 fib_index, ip6_address_t * lcl,
/**
* Lookup session with ip6 and transport layer information
*
- * Lookup logic is identical to that of @ref session_lookup_connection_wt6 but
- * this returns a session as opposed to a transport connection;
+ * 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_lookup6 (u32 fib_index, ip6_address_t * lcl, ip6_address_t * rmt,
- u16 lcl_port, u16 rmt_port, u8 proto)
+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;
@@ -887,16 +930,11 @@ session_lookup6 (u32 fib_index, ip6_address_t * lcl, ip6_address_t * rmt,
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 session_get_from_handle (kv6.value);
+ return session_get_from_handle_safe (kv6.value);
/* If nothing is found, check if any listener is available */
if ((s = session_lookup_listener6_i (st, lcl, lcl_port, proto)))
return s;
-
- /* Finally, try half-open connections */
- rv = clib_bihash_search_inline_48_8 (&st->v6_half_open_hash, &kv6);
- if (rv == 0)
- return session_get_from_handle (kv6.value);
return 0;
}