IPv6 ND Router discovery data plane (VPP-1095)
Add API call to send Router Solicitation messages.
Save info from incoming Router Advertisement messages and notify listeners.
Change-Id: Ie518b5492231e03291bd4c4280be4727bfecab46
Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c
index 9cd6257..0a05511 100644
--- a/src/vnet/ip/ip_api.c
+++ b/src/vnet/ip/ip_api.c
@@ -78,6 +78,7 @@
_(SET_ARP_NEIGHBOR_LIMIT, set_arp_neighbor_limit) \
_(WANT_IP4_ARP_EVENTS, want_ip4_arp_events) \
_(WANT_IP6_ND_EVENTS, want_ip6_nd_events) \
+_(WANT_IP6_RA_EVENTS, want_ip6_ra_events) \
_(PROXY_ARP_ADD_DEL, proxy_arp_add_del) \
_(PROXY_ARP_INTFC_ENABLE_DISABLE, proxy_arp_intfc_enable_disable) \
_(RESET_FIB, reset_fib) \
@@ -90,6 +91,7 @@
_(SW_INTERFACE_IP6ND_RA_PREFIX, sw_interface_ip6nd_ra_prefix) \
_(IP6ND_PROXY_ADD_DEL, ip6nd_proxy_add_del) \
_(IP6ND_PROXY_DUMP, ip6nd_proxy_dump) \
+_(IP6ND_SEND_ROUTER_SOLICITATION, ip6nd_send_router_solicitation) \
_(SW_INTERFACE_IP6_ENABLE_DISABLE, sw_interface_ip6_enable_disable ) \
_(SW_INTERFACE_IP6_SET_LINK_LOCAL_ADDRESS, \
sw_interface_ip6_set_link_local_address) \
@@ -1651,6 +1653,32 @@
}
static void
+ vl_api_ip6nd_send_router_solicitation_t_handler
+ (vl_api_ip6nd_send_router_solicitation_t * mp)
+{
+ vl_api_ip6nd_send_router_solicitation_reply_t *rmp;
+ icmp6_send_router_solicitation_params_t params;
+ vlib_main_t *vm = vlib_get_main ();
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ BAD_SW_IF_INDEX_LABEL;
+ REPLY_MACRO (VL_API_IP6ND_SEND_ROUTER_SOLICITATION_REPLY);
+
+ if (rv != 0)
+ return;
+
+ params.irt = ntohl (mp->irt);
+ params.mrt = ntohl (mp->mrt);
+ params.mrc = ntohl (mp->mrc);
+ params.mrd = ntohl (mp->mrd);
+
+ icmp6_send_router_solicitation (vm, ntohl (mp->sw_if_index), mp->stop,
+ ¶ms);
+}
+
+static void
vl_api_sw_interface_ip6_enable_disable_t_handler
(vl_api_sw_interface_ip6_enable_disable_t * mp)
{
@@ -2181,7 +2209,7 @@
static vlib_node_registration_t wc_arp_process_node;
enum
-{ WC_ARP_REPORT, WC_ND_REPORT };
+{ WC_ARP_REPORT, WC_ND_REPORT, RA_REPORT, REPORT_MAX };
static uword
wc_arp_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
@@ -2280,6 +2308,74 @@
/* *INDENT-ON* */
}
}
+ else if (event_type == RA_REPORT)
+ {
+ ra_report_t *ra_events = event_data;
+ for (i = 0; i < vec_len (ra_events); i++)
+ {
+ vpe_client_registration_t *reg;
+ /* *INDENT-OFF* */
+ pool_foreach(reg, vpe_api_main.ip6_ra_events_registrations,
+ ({
+ vl_api_registration_t *vl_reg;
+ vl_reg =
+ vl_api_client_index_to_registration (reg->client_index);
+ if (vl_reg && vl_api_can_send_msg (vl_reg))
+ {
+ u32 event_size =
+ sizeof (vl_api_ip6_ra_event_t) +
+ vec_len (ra_events[i].prefixes) *
+ sizeof (vl_api_ip6_ra_prefix_info_t);
+ vl_api_ip6_ra_event_t *event =
+ vl_msg_api_alloc (event_size);
+ memset (event, 0, event_size);
+ event->_vl_msg_id = htons (VL_API_IP6_RA_EVENT);
+ event->client_index = reg->client_index;
+ event->pid = reg->client_pid;
+
+ event->sw_if_index = clib_host_to_net_u32 (ra_events[i].sw_if_index);
+
+ memcpy (event->router_address, ra_events[i].router_address, 16);
+
+ event->current_hop_limit = ra_events[i].current_hop_limit;
+ event->flags = ra_events[i].flags;
+ event->router_lifetime_in_sec =
+ clib_host_to_net_u16 (ra_events
+ [i].router_lifetime_in_sec);
+ event->neighbor_reachable_time_in_msec =
+ clib_host_to_net_u32 (ra_events
+ [i].neighbor_reachable_time_in_msec);
+ event->time_in_msec_between_retransmitted_neighbor_solicitations
+ =
+ clib_host_to_net_u32 (ra_events
+ [i].time_in_msec_between_retransmitted_neighbor_solicitations);
+
+ event->n_prefixes =
+ clib_host_to_net_u32 (vec_len (ra_events[i].prefixes));
+ vl_api_ip6_ra_prefix_info_t *prefix =
+ (typeof (prefix)) event->prefixes;
+ u32 j;
+ for (j = 0; j < vec_len (ra_events[i].prefixes); j++)
+ {
+ ra_report_prefix_info_t *info =
+ &ra_events[i].prefixes[j];
+ memcpy (prefix->dst_address, info->dst_address.as_u8,
+ 16);
+ prefix->dst_address_length = info->dst_address_length;
+ prefix->flags = info->flags;
+ prefix->valid_time =
+ clib_host_to_net_u32 (info->valid_time);
+ prefix->preferred_time =
+ clib_host_to_net_u32 (info->preferred_time);
+ prefix++;
+ }
+
+ vl_api_send_msg (vl_reg, (u8 *) event);
+ }
+ }));
+ /* *INDENT-ON* */
+ }
+ }
vlib_process_put_event_data (vm, event_data);
}
@@ -2345,7 +2441,7 @@
hash_unset (am->wc_ip4_arp_events_registration_hash,
mp->client_index);
if (pool_elts (am->wc_ip4_arp_events_registrations) == 0)
- wc_arp_set_publisher_node (~0, WC_ARP_REPORT);
+ wc_arp_set_publisher_node (~0, REPORT_MAX);
goto reply;
}
}
@@ -2430,7 +2526,7 @@
hash_unset (am->wc_ip6_nd_events_registration_hash,
mp->client_index);
if (pool_elts (am->wc_ip6_nd_events_registrations) == 0)
- wc_nd_set_publisher_node (~0, 2);
+ wc_nd_set_publisher_node (~0, REPORT_MAX);
goto reply;
}
}
@@ -2485,6 +2581,50 @@
}
static void
+vl_api_want_ip6_ra_events_t_handler (vl_api_want_ip6_ra_events_t * mp)
+{
+ vpe_api_main_t *am = &vpe_api_main;
+ vl_api_want_ip6_ra_events_reply_t *rmp;
+ int rv = 0;
+
+ uword *p = hash_get (am->ip6_ra_events_registration_hash, mp->client_index);
+ vpe_client_registration_t *rp;
+ if (p)
+ {
+ if (mp->enable_disable)
+ {
+ clib_warning ("pid %d: already enabled...", ntohl (mp->pid));
+ rv = VNET_API_ERROR_INVALID_REGISTRATION;
+ goto reply;
+ }
+ else
+ {
+ rp = pool_elt_at_index (am->ip6_ra_events_registrations, p[0]);
+ pool_put (am->ip6_ra_events_registrations, rp);
+ hash_unset (am->ip6_ra_events_registration_hash, mp->client_index);
+ if (pool_elts (am->ip6_ra_events_registrations) == 0)
+ ra_set_publisher_node (~0, REPORT_MAX);
+ goto reply;
+ }
+ }
+ if (mp->enable_disable == 0)
+ {
+ clib_warning ("pid %d: already disabled...", ntohl (mp->pid));
+ rv = VNET_API_ERROR_INVALID_REGISTRATION;
+ goto reply;
+ }
+ pool_get (am->ip6_ra_events_registrations, rp);
+ rp->client_index = mp->client_index;
+ rp->client_pid = ntohl (mp->pid);
+ hash_set (am->ip6_ra_events_registration_hash, rp->client_index,
+ rp - am->ip6_ra_events_registrations);
+ ra_set_publisher_node (wc_arp_process_node.index, RA_REPORT);
+
+reply:
+ REPLY_MACRO (VL_API_WANT_IP6_RA_EVENTS_REPLY);
+}
+
+static void
vl_api_proxy_arp_add_del_t_handler (vl_api_proxy_arp_add_del_t * mp)
{
vl_api_proxy_arp_add_del_reply_t *rmp;