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authorMatthew Smith <mgsmith@netgate.com>2020-02-11 11:25:32 -0600
committerDave Barach <openvpp@barachs.net>2020-02-13 19:46:30 +0000
commit39e9428b90bc74d1bb15fc17759c8ef6ad712418 (patch)
treede9317a906a7df43bf2140a654d3b7675cab8d86 /src/plugins/vrrp/vrrp_api.c
parentf75defa7676759fa81ae75e7edd492572c6b8fd6 (diff)
vrrp: add plugin providing vrrp support
Type: feature Add a new plugin to support HA using VRRPv3 (RFC 5798). Change-Id: Iaa2c37e6172f8f41e9165f178f44d481f6e247b9 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Diffstat (limited to 'src/plugins/vrrp/vrrp_api.c')
-rw-r--r--src/plugins/vrrp/vrrp_api.c501
1 files changed, 501 insertions, 0 deletions
diff --git a/src/plugins/vrrp/vrrp_api.c b/src/plugins/vrrp/vrrp_api.c
new file mode 100644
index 00000000000..3b9c256b263
--- /dev/null
+++ b/src/plugins/vrrp/vrrp_api.c
@@ -0,0 +1,501 @@
+/*
+ * vrrp.c - vpp vrrp plug-in
+ *
+ * Copyright 2019-2020 Rubicon Communications, LLC (Netgate)
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <vrrp/vrrp.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/app/version.h>
+
+/* define message IDs */
+#include <vnet/format_fns.h>
+#include <vrrp/vrrp.api_enum.h>
+#include <vrrp/vrrp.api_types.h>
+
+#define REPLY_MSG_ID_BASE vmp->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+/* API message handlers */
+static void
+vl_api_vrrp_vr_add_del_t_handler (vl_api_vrrp_vr_add_del_t * mp)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_vrrp_vr_add_del_reply_t *rmp;
+ vrrp_vr_config_t vr_conf;
+ u32 api_flags;
+ ip46_address_t *addrs = 0;
+ int rv;
+
+ api_flags = htonl (mp->flags);
+
+ clib_memset (&vr_conf, 0, sizeof (vr_conf));
+
+ vr_conf.sw_if_index = ntohl (mp->sw_if_index);
+ vr_conf.vr_id = mp->vr_id;
+ vr_conf.priority = mp->priority;
+ vr_conf.adv_interval = ntohs (mp->interval);
+
+ if (api_flags & VRRP_API_VR_PREEMPT)
+ vr_conf.flags |= VRRP_VR_PREEMPT;
+
+ if (api_flags & VRRP_API_VR_ACCEPT)
+ vr_conf.flags |= VRRP_VR_ACCEPT;
+
+ if (api_flags & VRRP_API_VR_UNICAST)
+ vr_conf.flags |= VRRP_VR_UNICAST;
+
+ if (api_flags & VRRP_API_VR_IPV6)
+ vr_conf.flags |= VRRP_VR_IPV6;
+
+ if (mp->is_add)
+ {
+ int i;
+
+ for (i = 0; i < mp->n_addrs; i++)
+ {
+ ip46_address_t *addr;
+ void *src, *dst;
+ int len;
+
+ vec_add2 (addrs, addr, 1);
+
+ if (ntohl (mp->addrs[i].af) == ADDRESS_IP4)
+ {
+ src = &mp->addrs[i].un.ip4;
+ dst = &addr->ip4;
+ len = sizeof (addr->ip4);
+ }
+ else
+ {
+ src = &mp->addrs[i].un.ip6;
+ dst = &addr->ip6;
+ len = sizeof (addr->ip6);
+ }
+
+ clib_memcpy (dst, src, len);
+ }
+
+ vr_conf.vr_addrs = addrs;
+ }
+
+ if (vr_conf.priority == 0)
+ {
+ clib_warning ("VR priority must be > 0");
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ }
+ else if (vr_conf.adv_interval == 0)
+ {
+ clib_warning ("VR advertisement interval must be > 0");
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ }
+ else if (vr_conf.vr_id == 0)
+ {
+ clib_warning ("VR ID must be > 0");
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ }
+ else
+ rv = vrrp_vr_add_del (mp->is_add, &vr_conf);
+
+ vec_free (addrs);
+
+ REPLY_MACRO (VL_API_VRRP_VR_ADD_DEL_REPLY);
+}
+
+static void
+send_vrrp_vr_details (vrrp_vr_t * vr, vl_api_registration_t * reg,
+ u32 context)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_vrrp_vr_details_t *mp;
+ int n_addrs, msg_size;
+ ip46_address_t *addr;
+ vl_api_address_t *api_addr;
+ u32 api_flags = 0;
+
+ n_addrs = vec_len (vr->config.vr_addrs);
+ msg_size = sizeof (*mp) + n_addrs * sizeof (*api_addr);
+ mp = vl_msg_api_alloc (msg_size);
+ if (!mp)
+ return;
+ clib_memset (mp, 0, msg_size);
+ mp->_vl_msg_id = htons (VL_API_VRRP_VR_DETAILS + vmp->msg_id_base);
+ mp->context = context;
+
+ /* config */
+ mp->config.sw_if_index = htonl (vr->config.sw_if_index);
+ mp->config.vr_id = vr->config.vr_id;
+ mp->config.priority = vr->config.priority;
+ mp->config.interval = htons (vr->config.adv_interval);
+
+ if (vr->config.flags & VRRP_VR_PREEMPT)
+ api_flags |= VRRP_API_VR_PREEMPT;
+ if (vr->config.flags & VRRP_VR_ACCEPT)
+ api_flags |= VRRP_API_VR_ACCEPT;
+ if (vrrp_vr_is_unicast (vr))
+ api_flags |= VRRP_API_VR_UNICAST;
+ if (vrrp_vr_is_ipv6 (vr))
+ api_flags |= VRRP_API_VR_IPV6;
+
+ mp->config.flags = htonl (api_flags);
+
+ /* runtime */
+ switch (vr->runtime.state)
+ {
+ case VRRP_VR_STATE_INIT:
+ mp->runtime.state = htonl (VRRP_API_VR_STATE_INIT);
+ break;
+ case VRRP_VR_STATE_BACKUP:
+ mp->runtime.state = htonl (VRRP_API_VR_STATE_BACKUP);
+ break;
+ case VRRP_VR_STATE_MASTER:
+ mp->runtime.state = htonl (VRRP_API_VR_STATE_MASTER);
+ break;
+ case VRRP_VR_STATE_INTF_DOWN:
+ mp->runtime.state = htonl (VRRP_API_VR_STATE_INTF_DOWN);
+ break;
+ default:
+ break;
+ }
+
+ mp->runtime.master_adv_int = htons (vr->runtime.master_adv_int);
+ mp->runtime.skew = htons (vr->runtime.skew);
+ mp->runtime.master_down_int = htons (vr->runtime.master_down_int);
+ clib_memcpy (&mp->runtime.mac, &vr->runtime.mac, sizeof (vr->runtime.mac));
+
+ mp->runtime.tracking.interfaces_dec = htonl (vr->tracking.interfaces_dec);
+ mp->runtime.tracking.priority = vrrp_vr_priority (vr);
+
+ /* addrs */
+ mp->n_addrs = vec_len (vr->config.vr_addrs);
+ api_addr = mp->addrs;
+ vec_foreach (addr, vr->config.vr_addrs)
+ {
+ void *src, *dst;
+ size_t len;
+
+ if (vrrp_vr_is_ipv6 (vr))
+ {
+ api_addr->af = htonl (ADDRESS_IP6);
+ dst = &api_addr->un.ip6;
+ src = &addr->ip6;
+ len = sizeof (addr->ip6);
+ }
+ else
+ {
+ api_addr->af = htonl (ADDRESS_IP4);
+ dst = &api_addr->un.ip4;
+ src = &addr->ip4;
+ len = sizeof (addr->ip4);
+ }
+ clib_memcpy (dst, src, len);
+ api_addr++;
+ }
+
+ vl_api_send_msg (reg, (u8 *) mp);
+}
+
+static void
+vl_api_vrrp_vr_dump_t_handler (vl_api_vrrp_vr_dump_t * mp)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_registration_t *reg;
+ vrrp_vr_t *vr;
+ u32 sw_if_index;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+
+ sw_if_index = htonl (mp->sw_if_index);
+
+ /* *INDENT-OFF* */
+ pool_foreach (vr, vmp->vrs, ({
+
+ if (sw_if_index && (sw_if_index != ~0) &&
+ (sw_if_index != vr->config.sw_if_index))
+ continue;
+
+ send_vrrp_vr_details (vr, reg, mp->context);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_vrrp_vr_start_stop_t_handler (vl_api_vrrp_vr_start_stop_t * mp)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_vrrp_vr_start_stop_reply_t *rmp;
+ vrrp_vr_key_t vr_key;
+ int rv;
+
+ clib_memset (&vr_key, 0, sizeof (vr_key));
+
+ vr_key.sw_if_index = ntohl (mp->sw_if_index);
+ vr_key.vr_id = mp->vr_id;
+ vr_key.is_ipv6 = (mp->is_ipv6 != 0);
+
+ rv = vrrp_vr_start_stop ((mp->is_start != 0), &vr_key);
+
+ REPLY_MACRO (VL_API_VRRP_VR_START_STOP_REPLY);
+}
+
+static void
+vl_api_vrrp_vr_set_peers_t_handler (vl_api_vrrp_vr_set_peers_t * mp)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_vrrp_vr_set_peers_reply_t *rmp;
+ vrrp_vr_key_t vr_key;
+ ip46_address_t *peer_addrs = 0;
+ int i;
+ int rv;
+
+ clib_memset (&vr_key, 0, sizeof (vr_key));
+
+ vr_key.sw_if_index = ntohl (mp->sw_if_index);
+ vr_key.vr_id = mp->vr_id;
+ vr_key.is_ipv6 = (mp->is_ipv6 != 0);
+
+ for (i = 0; i < mp->n_addrs; i++)
+ {
+ ip46_address_t *peer;
+
+ vec_add2 (peer_addrs, peer, 1);
+
+ if (mp->is_ipv6)
+ clib_memcpy (&peer->ip6, mp->addrs[i].un.ip6, 16);
+ else
+ clib_memcpy (&peer->ip4, mp->addrs[i].un.ip4, 4);
+ }
+
+ rv = vrrp_vr_set_peers (&vr_key, peer_addrs);
+
+ vec_free (peer_addrs);
+ REPLY_MACRO (VL_API_VRRP_VR_SET_PEERS_REPLY);
+}
+
+static void
+send_vrrp_vr_peer_details (vrrp_vr_t * vr, vl_api_registration_t * reg,
+ u32 context)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_vrrp_vr_peer_details_t *mp;
+ int n_addrs, msg_size;
+ ip46_address_t *addr;
+ vl_api_address_t *api_addr;
+
+ n_addrs = vec_len (vr->config.peer_addrs);
+ msg_size = sizeof (*mp) + n_addrs * sizeof (*api_addr);
+ mp = vl_msg_api_alloc (msg_size);
+ if (!mp)
+ return;
+ clib_memset (mp, 0, msg_size);
+ mp->_vl_msg_id = htons (VL_API_VRRP_VR_PEER_DETAILS + vmp->msg_id_base);
+ mp->context = context;
+
+ mp->sw_if_index = htonl (vr->config.sw_if_index);
+ mp->vr_id = vr->config.vr_id;
+ mp->is_ipv6 = vrrp_vr_is_ipv6 (vr);
+
+ /* addrs */
+ mp->n_peer_addrs = n_addrs;
+ api_addr = mp->peer_addrs;
+ vec_foreach (addr, vr->config.peer_addrs)
+ {
+ void *src, *dst;
+ size_t len;
+
+ if (vrrp_vr_is_ipv6 (vr))
+ {
+ api_addr->af = htonl (ADDRESS_IP6);
+ dst = &api_addr->un.ip6;
+ src = &addr->ip6;
+ len = sizeof (addr->ip6);
+ }
+ else
+ {
+ api_addr->af = htonl (ADDRESS_IP4);
+ dst = &api_addr->un.ip4;
+ src = &addr->ip4;
+ len = sizeof (addr->ip4);
+ }
+ clib_memcpy (dst, src, len);
+ api_addr++;
+ }
+
+ vl_api_send_msg (reg, (u8 *) mp);
+}
+
+static void
+vl_api_vrrp_vr_peer_dump_t_handler (vl_api_vrrp_vr_peer_dump_t * mp)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_registration_t *reg;
+ vrrp_vr_t *vr;
+ vrrp_vr_key_t vr_key;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+
+ vr_key.sw_if_index = ntohl (mp->sw_if_index);
+
+ if (vr_key.sw_if_index && (vr_key.sw_if_index != ~0))
+ {
+ uword *p;
+ u32 vr_index = ~0;
+
+ vr_key.vr_id = mp->vr_id;
+ vr_key.is_ipv6 = mp->is_ipv6;
+
+ p = mhash_get (&vmp->vr_index_by_key, &vr_key);
+ if (!p)
+ return;
+
+ vr_index = p[0];
+ vr = pool_elt_at_index (vmp->vrs, vr_index);
+ send_vrrp_vr_peer_details (vr, reg, mp->context);
+
+ return;
+ }
+
+ /* *INDENT-OFF* */
+ pool_foreach (vr, vmp->vrs, ({
+
+ if (!vec_len (vr->config.peer_addrs))
+ continue;
+
+ send_vrrp_vr_details (vr, reg, mp->context);
+
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+ vl_api_vrrp_vr_track_if_add_del_t_handler
+ (vl_api_vrrp_vr_track_if_add_del_t * mp)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_vrrp_vr_track_if_add_del_reply_t *rmp;
+ vrrp_vr_t *vr;
+ vrrp_vr_tracking_if_t *track_if, *track_ifs = 0;
+ int rv = 0, i;
+
+ /* lookup VR and return error if it does not exist */
+ vr =
+ vrrp_vr_lookup (ntohl (mp->sw_if_index), mp->vr_id, (mp->is_ipv6 != 0));
+ if (!vr)
+ {
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ goto done;
+ }
+
+ for (i = 0; i < mp->n_ifs; i++)
+ {
+ vl_api_vrrp_vr_track_if_t *api_track_if = &mp->ifs[i];
+
+ vec_add2 (track_ifs, track_if, 1);
+ track_if->sw_if_index = ntohl (api_track_if->sw_if_index);
+ track_if->priority = api_track_if->priority;
+ }
+
+ rv = vrrp_vr_tracking_ifs_add_del (vr, track_ifs, mp->is_add != 0);
+
+done:
+ vec_free (track_ifs);
+ REPLY_MACRO (VL_API_VRRP_VR_TRACK_IF_ADD_DEL_REPLY);
+}
+
+static void
+send_vrrp_vr_track_if_details (vrrp_vr_t * vr, vl_api_registration_t * reg,
+ u32 context)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_vrrp_vr_track_if_details_t *mp;
+ int n_ifs, msg_size;
+ vl_api_vrrp_vr_track_if_t *api_track_if;
+ vrrp_vr_tracking_if_t *track_if;
+
+ if (!vr)
+ return;
+
+ n_ifs = vec_len (vr->tracking.interfaces);
+ msg_size = sizeof (*mp) + n_ifs * sizeof (*api_track_if);
+ mp = vl_msg_api_alloc (msg_size);
+ if (!mp)
+ return;
+ clib_memset (mp, 0, msg_size);
+ mp->_vl_msg_id = htons (VL_API_VRRP_VR_TRACK_IF_DETAILS + vmp->msg_id_base);
+ mp->context = context;
+
+ mp->sw_if_index = htonl (vr->config.sw_if_index);
+ mp->vr_id = vr->config.vr_id;
+ mp->is_ipv6 = vrrp_vr_is_ipv6 (vr);
+
+ /* tracked interfaces */
+ mp->n_ifs = n_ifs;
+ api_track_if = mp->ifs;
+ vec_foreach (track_if, vr->tracking.interfaces)
+ {
+ api_track_if->sw_if_index = htonl (track_if->sw_if_index);
+ api_track_if->priority = track_if->priority;
+ api_track_if += 1;
+ }
+
+ vl_api_send_msg (reg, (u8 *) mp);
+}
+
+static void
+vl_api_vrrp_vr_track_if_dump_t_handler (vl_api_vrrp_vr_track_if_dump_t * mp)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+ vl_api_registration_t *reg;
+ vrrp_vr_t *vr;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+
+ if (!mp->dump_all)
+ {
+ vr = vrrp_vr_lookup (ntohl (mp->sw_if_index), mp->vr_id, mp->is_ipv6);
+ send_vrrp_vr_track_if_details (vr, reg, mp->context);
+
+ return;
+ }
+
+ /* *INDENT-OFF* */
+ pool_foreach (vr, vmp->vrs, ({
+
+ if (!vec_len (vr->tracking.interfaces))
+ continue;
+
+ send_vrrp_vr_track_if_details (vr, reg, mp->context);
+
+ }));
+ /* *INDENT-ON* */
+}
+
+/* Set up the API message handling tables */
+#include <vrrp/vrrp.api.c>
+clib_error_t *
+vrrp_plugin_api_hookup (vlib_main_t * vm)
+{
+ vrrp_main_t *vmp = &vrrp_main;
+
+ /* Ask for a correctly-sized block of API message decode slots */
+ vmp->msg_id_base = setup_message_id_table ();
+
+ return 0;
+}
+
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */