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authorFilip Varga <fivarga@cisco.com>2020-12-10 15:55:25 +0100
committerOle Tr�an <otroan@employees.org>2021-01-05 14:09:39 +0000
commita210798c407035f09c10c018ebdaf12312161730 (patch)
treec03e68701aaca9c3a4207107bdacb183da8a4a5a /src/plugins/nat/out2in_ed.c
parent641c6be821c3136cb140b6726e16246f2f1cbd4c (diff)
nat: refactor and split fo EI/ED features
This patch is aimed at moving EI features out of NAT44 plugin & split of EI/ED functions. Type: refactor Change-Id: I63cf70a264ed2512708fe92665d64f04690783d0 Signed-off-by: Filip Varga <fivarga@cisco.com>
Diffstat (limited to 'src/plugins/nat/out2in_ed.c')
-rw-r--r--src/plugins/nat/out2in_ed.c102
1 files changed, 85 insertions, 17 deletions
diff --git a/src/plugins/nat/out2in_ed.c b/src/plugins/nat/out2in_ed.c
index 95e2ea972af..beb259eee33 100644
--- a/src/plugins/nat/out2in_ed.c
+++ b/src/plugins/nat/out2in_ed.c
@@ -29,7 +29,6 @@
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
#include <nat/lib/nat_syslog.h>
-#include <nat/nat_ha.h>
#include <nat/nat44/ed_inlines.h>
static char *nat_out2in_ed_error_strings[] = {
@@ -157,10 +156,6 @@ nat44_o2i_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg)
&s->ext_host_addr, s->ext_host_port,
s->nat_proto, is_twice_nat_session (s));
- nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
- s->ext_host_port, s->nat_proto, s->out2in.fib_index,
- ctx->thread_index);
-
if (is_twice_nat_session (s))
{
for (i = 0; i < vec_len (sm->twice_nat_addresses); i++)
@@ -239,6 +234,87 @@ nat_alloc_addr_and_port_exact (snat_address_t * a,
return 1;
}
+static_always_inline int
+nat44_ed_alloc_outside_addr_and_port (snat_address_t *addresses, u32 fib_index,
+ u32 thread_index, nat_protocol_t proto,
+ ip4_address_t *addr, u16 *port,
+ u16 port_per_thread,
+ u32 snat_thread_index)
+{
+ int i;
+ snat_address_t *a, *ga = 0;
+ u32 portnum;
+
+ for (i = 0; i < vec_len (addresses); i++)
+ {
+ a = addresses + i;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \
+ { \
+ if (a->fib_index == fib_index) \
+ { \
+ while (1) \
+ { \
+ portnum = (port_per_thread * snat_thread_index) + \
+ snat_random_port (0, port_per_thread - 1) + 1024; \
+ if (a->busy_##n##_port_refcounts[portnum]) \
+ continue; \
+ --a->busy_##n##_port_refcounts[portnum]; \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ *addr = a->addr; \
+ *port = clib_host_to_net_u16 (portnum); \
+ return 0; \
+ } \
+ } \
+ else if (a->fib_index == ~0) \
+ { \
+ ga = a; \
+ } \
+ } \
+ break;
+ foreach_nat_protocol
+#undef _
+ default : nat_elog_info ("unknown protocol");
+ return 1;
+ }
+ }
+
+ if (ga)
+ {
+ a = ga;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ while (1) \
+ { \
+ portnum = (port_per_thread * snat_thread_index) + \
+ snat_random_port (0, port_per_thread - 1) + 1024; \
+ if (a->busy_##n##_port_refcounts[portnum]) \
+ continue; \
+ ++a->busy_##n##_port_refcounts[portnum]; \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ *addr = a->addr; \
+ *port = clib_host_to_net_u16 (portnum); \
+ return 0; \
+ }
+ break;
+ foreach_nat_protocol
+#undef _
+ default : nat_elog_info ("unknown protocol");
+ return 1;
+ }
+ }
+
+ /* Totally out of translations to use... */
+ nat_ipfix_logging_addresses_exhausted (thread_index, 0);
+ return 1;
+}
static snat_session_t *
create_session_for_static_mapping_ed (snat_main_t * sm,
@@ -342,13 +418,10 @@ create_session_for_static_mapping_ed (snat_main_t * sm,
}
else
{
- rc =
- snat_alloc_outside_address_and_port (sm->twice_nat_addresses, 0,
- thread_index, nat_proto,
- &s->ext_host_nat_addr,
- &s->ext_host_nat_port,
- sm->port_per_thread,
- tsm->snat_thread_index);
+ rc = nat44_ed_alloc_outside_addr_and_port (
+ sm->twice_nat_addresses, 0, thread_index, nat_proto,
+ &s->ext_host_nat_addr, &s->ext_host_nat_port, sm->port_per_thread,
+ tsm->snat_thread_index);
}
if (rc)
@@ -390,11 +463,6 @@ create_session_for_static_mapping_ed (snat_main_t * sm,
&s->ext_host_addr, s->ext_host_port,
s->nat_proto, is_twice_nat_session (s));
- nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
- s->out2in.port, &s->ext_host_addr, s->ext_host_port,
- &s->ext_host_nat_addr, s->ext_host_nat_port,
- s->nat_proto, s->in2out.fib_index, s->flags, thread_index, 0);
-
per_vrf_sessions_register_session (s, thread_index);
return s;