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authorAlexander Chernavin <achernavin@netgate.com>2021-08-30 08:55:27 +0000
committerOle Tr�an <otroan@employees.org>2021-09-09 16:29:49 +0000
commitf059a3452c285ec57a75c7b1ede5052244be4e5d (patch)
tree5e50e3adb81a32d145c11a20eaf5df744630feab /src/plugins/nat/nat44-ed/nat44_ed_api.c
parent296f4a3056af8a0faeaa02e879801c552bddbacf (diff)
nat: nat44-ed add session timing out indicator in api
Type: improvement Currently, NAT44-ED users sessions details are returned for both active and timed out NAT sessions. It may confuse users that expect to see only active sessions in the response and make them think that timeouts for NAT sessions do not work. With this change, introduce an indicator of timing out for NAT sessions returned in NAT44-ED user session details. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ib81ed90369d4b495117538f521e5112e289cf7e6
Diffstat (limited to 'src/plugins/nat/nat44-ed/nat44_ed_api.c')
-rw-r--r--src/plugins/nat/nat44-ed/nat44_ed_api.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/plugins/nat/nat44-ed/nat44_ed_api.c b/src/plugins/nat/nat44-ed/nat44_ed_api.c
index 64946c7b640..e9c11c0ea5b 100644
--- a/src/plugins/nat/nat44-ed/nat44_ed_api.c
+++ b/src/plugins/nat/nat44-ed/nat44_ed_api.c
@@ -1676,6 +1676,99 @@ vl_api_nat44_user_session_dump_t_handler (vl_api_nat44_user_session_dump_t *
}
}
+static void
+send_nat44_user_session_v2_details (snat_session_t *s,
+ vl_api_registration_t *reg, u32 context)
+{
+ vl_api_nat44_user_session_v2_details_t *rmp;
+ snat_main_t *sm = &snat_main;
+ u64 now = vlib_time_now (sm->vnet_main->vlib_main);
+ u64 sess_timeout_time = 0;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id =
+ ntohs (VL_API_NAT44_USER_SESSION_V2_DETAILS + sm->msg_id_base);
+ clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
+ clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
+
+ if (snat_is_session_static (s))
+ rmp->flags |= NAT_API_IS_STATIC;
+
+ if (is_twice_nat_session (s))
+ rmp->flags |= NAT_API_IS_TWICE_NAT;
+
+ if (is_ed_session (s) || is_fwd_bypass_session (s))
+ rmp->flags |= NAT_API_IS_EXT_HOST_VALID;
+
+ rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
+ rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
+ rmp->total_pkts = ntohl (s->total_pkts);
+ rmp->context = context;
+ if (snat_is_unk_proto_session (s))
+ {
+ rmp->outside_port = 0;
+ rmp->inside_port = 0;
+ rmp->protocol = ntohs (s->in2out.port);
+ }
+ else
+ {
+ rmp->outside_port = s->out2in.port;
+ rmp->inside_port = s->in2out.port;
+ rmp->protocol = ntohs (nat_proto_to_ip_proto (s->nat_proto));
+ }
+ if (is_ed_session (s) || is_fwd_bypass_session (s))
+ {
+ clib_memcpy (rmp->ext_host_address, &s->ext_host_addr, 4);
+ rmp->ext_host_port = s->ext_host_port;
+ if (is_twice_nat_session (s))
+ {
+ clib_memcpy (rmp->ext_host_nat_address, &s->ext_host_nat_addr, 4);
+ rmp->ext_host_nat_port = s->ext_host_nat_port;
+ }
+ }
+
+ sess_timeout_time = s->last_heard + (f64) nat_session_get_timeout (
+ &sm->timeouts, s->nat_proto, s->state);
+ rmp->is_timed_out = (now >= sess_timeout_time);
+
+ vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_nat44_user_session_v2_dump_t_handler (
+ vl_api_nat44_user_session_v2_dump_t *mp)
+{
+ snat_main_per_thread_data_t *tsm;
+ snat_main_t *sm = &snat_main;
+ vl_api_registration_t *reg;
+ snat_user_key_t ukey;
+ snat_session_t *s;
+ ip4_header_t ip;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ clib_memcpy (&ukey.addr, mp->ip_address, 4);
+ ip.src_address.as_u32 = ukey.addr.as_u32;
+ ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
+ if (sm->num_workers > 1)
+ tsm = vec_elt_at_index (
+ sm->per_thread_data,
+ nat44_ed_get_in2out_worker_index (0, &ip, ukey.fib_index, 0));
+ else
+ tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+
+ pool_foreach (s, tsm->sessions)
+ {
+ if (s->in2out.addr.as_u32 == ukey.addr.as_u32)
+ {
+ send_nat44_user_session_v2_details (s, reg, mp->context);
+ }
+ }
+}
+
/* API definitions */
#include <vnet/format_fns.h>
#include <nat/nat44-ed/nat44_ed.api.c>