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authorMatus Fabian <matfabia@cisco.com>2019-02-26 09:05:23 -0800
committerMatus Fabian <matfabia@cisco.com>2019-02-27 00:56:32 -0800
commit34931eb47124ef78a3aa9575930e848a78c9618b (patch)
treedec97d4d04e0011fe49b7712d7deba5ef8f0e99c /src/plugins/nat/nat_api.c
parent8343ee5665942353e57ee074da62b9d07c1c510b (diff)
NAT44: active-passive HA (VPP-1571)
session synchronization so that we can build a plain active-passive HA NAT pair Change-Id: I21db200491081ca46b7af3e82afc677c1985abf4 Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins/nat/nat_api.c')
-rw-r--r--src/plugins/nat/nat_api.c206
1 files changed, 205 insertions, 1 deletions
diff --git a/src/plugins/nat/nat_api.c b/src/plugins/nat/nat_api.c
index 865f772e51b..516b27fb6f5 100644
--- a/src/plugins/nat/nat_api.c
+++ b/src/plugins/nat/nat_api.c
@@ -25,6 +25,7 @@
#include <nat/dslite.h>
#include <nat/nat_reass.h>
#include <nat/nat_inlines.h>
+#include <nat/nat_ha.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
@@ -630,6 +631,203 @@ vl_api_nat_get_mss_clamping_t_print (vl_api_nat_get_mss_clamping_t * mp,
FINISH;
}
+static void
+vl_api_nat_ha_set_listener_t_handler (vl_api_nat_ha_set_listener_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat_ha_set_listener_reply_t *rmp;
+ ip4_address_t addr;
+ int rv;
+
+ memcpy (&addr, &mp->ip_address, sizeof (addr));
+ rv =
+ nat_ha_set_listener (&addr, clib_net_to_host_u16 (mp->port),
+ clib_net_to_host_u32 (mp->path_mtu));
+
+ REPLY_MACRO (VL_API_NAT_HA_SET_LISTENER_REPLY);
+}
+
+static void *
+vl_api_nat_ha_set_listener_t_print (vl_api_nat_ha_set_listener_t * mp,
+ void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat_ha_set_listener ");
+ s = format (s, "ip_address %U ", format_ip4_address, mp->ip_address);
+ s = format (s, "port %d ", clib_net_to_host_u16 (mp->port));
+ s = format (s, "path_mtu %d", clib_net_to_host_u32 (mp->path_mtu));
+
+ FINISH;
+}
+
+static void
+vl_api_nat_ha_get_listener_t_handler (vl_api_nat_ha_get_listener_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat_ha_get_listener_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t addr;
+ u16 port;
+ u32 path_mtu;
+
+ nat_ha_get_listener (&addr, &port, &path_mtu);
+
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT_HA_GET_LISTENER_REPLY,
+ ({
+ clib_memcpy (rmp->ip_address, &addr, sizeof (ip4_address_t));
+ rmp->port = clib_host_to_net_u16 (port);
+ rmp->path_mtu = clib_host_to_net_u32 (path_mtu);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_ha_get_listener_t_print (vl_api_nat_ha_get_listener_t * mp,
+ void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat_ha_get_listener");
+
+ FINISH;
+}
+
+static void
+vl_api_nat_ha_set_failover_t_handler (vl_api_nat_ha_set_failover_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat_ha_set_failover_reply_t *rmp;
+ ip4_address_t addr;
+ int rv;
+
+ memcpy (&addr, &mp->ip_address, sizeof (addr));
+ rv =
+ nat_ha_set_failover (&addr, clib_net_to_host_u16 (mp->port),
+ clib_net_to_host_u32 (mp->session_refresh_interval));
+
+ REPLY_MACRO (VL_API_NAT_HA_SET_FAILOVER_REPLY);
+}
+
+static void *
+vl_api_nat_ha_set_failover_t_print (vl_api_nat_ha_set_failover_t * mp,
+ void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat_ha_set_failover ");
+ s = format (s, "ip_address %U ", format_ip4_address, mp->ip_address);
+ s = format (s, "port %d ", clib_net_to_host_u16 (mp->port));
+
+ FINISH;
+}
+
+static void
+vl_api_nat_ha_get_failover_t_handler (vl_api_nat_ha_get_failover_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat_ha_get_failover_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t addr;
+ u16 port;
+ u32 session_refresh_interval;
+
+ nat_ha_get_failover (&addr, &port, &session_refresh_interval);
+
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT_HA_GET_FAILOVER_REPLY,
+ ({
+ clib_memcpy (rmp->ip_address, &addr, sizeof (ip4_address_t));
+ rmp->port = clib_host_to_net_u16 (port);
+ rmp->session_refresh_interval = clib_host_to_net_u32 (session_refresh_interval);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_ha_get_failover_t_print (vl_api_nat_ha_get_failover_t * mp,
+ void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat_ha_get_failover");
+
+ FINISH;
+}
+
+static void
+vl_api_nat_ha_flush_t_handler (vl_api_nat_ha_flush_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat_ha_flush_reply_t *rmp;
+ int rv = 0;
+
+ nat_ha_flush (0);
+
+ REPLY_MACRO (VL_API_NAT_HA_FLUSH_REPLY);
+}
+
+static void *
+vl_api_nat_ha_flush_t_print (vl_api_nat_ha_flush_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat_ha_flush ");
+
+ FINISH;
+}
+
+static void
+nat_ha_resync_completed_event_cb (u32 client_index, u32 pid, u32 missed_count)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_registration_t *reg;
+ vl_api_nat_ha_resync_completed_event_t *mp;
+
+ reg = vl_api_client_index_to_registration (client_index);
+ if (!reg)
+ return;
+
+ mp = vl_msg_api_alloc (sizeof (*mp));
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->client_index = client_index;
+ mp->pid = pid;
+ mp->missed_count = clib_host_to_net_u32 (missed_count);
+ mp->_vl_msg_id =
+ ntohs (VL_API_NAT_HA_RESYNC_COMPLETED_EVENT + sm->msg_id_base);
+
+ vl_api_send_msg (reg, (u8 *) mp);
+}
+
+static void
+vl_api_nat_ha_resync_t_handler (vl_api_nat_ha_resync_t * mp)
+{
+ snat_main_t *sm = &snat_main;
+ vl_api_nat_ha_resync_reply_t *rmp;
+ int rv;
+
+ rv =
+ nat_ha_resync (mp->client_index, mp->pid,
+ mp->want_resync_event ? nat_ha_resync_completed_event_cb :
+ NULL);
+
+ REPLY_MACRO (VL_API_NAT_HA_RESYNC_REPLY);
+}
+
+static void *
+vl_api_nat_ha_resync_t_print (vl_api_nat_ha_resync_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: nat_ha_resync ");
+ s =
+ format (s, "want_resync_event %d pid %d", mp->want_resync_event,
+ clib_host_to_net_u32 (mp->pid));
+
+ FINISH;
+}
+
/*************/
/*** NAT44 ***/
/*************/
@@ -1846,7 +2044,7 @@ static void
vec_foreach (ses_index, ses_to_be_removed)
{
s = pool_elt_at_index(tsm->sessions, ses_index[0]);
- nat_free_session_data (sm, s, tsm - sm->per_thread_data);
+ nat_free_session_data (sm, s, tsm - sm->per_thread_data, 0);
nat44_delete_session (sm, s, tsm - sm->per_thread_data);
}
vec_free (ses_to_be_removed);
@@ -3198,6 +3396,12 @@ _(NAT_SET_ADDR_AND_PORT_ALLOC_ALG, nat_set_addr_and_port_alloc_alg) \
_(NAT_GET_ADDR_AND_PORT_ALLOC_ALG, nat_get_addr_and_port_alloc_alg) \
_(NAT_SET_MSS_CLAMPING, nat_set_mss_clamping) \
_(NAT_GET_MSS_CLAMPING, nat_get_mss_clamping) \
+_(NAT_HA_SET_LISTENER, nat_ha_set_listener) \
+_(NAT_HA_SET_FAILOVER, nat_ha_set_failover) \
+_(NAT_HA_GET_LISTENER, nat_ha_get_listener) \
+_(NAT_HA_GET_FAILOVER, nat_ha_get_failover) \
+_(NAT_HA_FLUSH, nat_ha_flush) \
+_(NAT_HA_RESYNC, nat_ha_resync) \
_(NAT44_ADD_DEL_ADDRESS_RANGE, nat44_add_del_address_range) \
_(NAT44_INTERFACE_ADD_DEL_FEATURE, nat44_interface_add_del_feature) \
_(NAT44_ADD_DEL_STATIC_MAPPING, nat44_add_del_static_mapping) \