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authorJohn Lo <loj@cisco.com>2018-04-13 16:46:22 -0400
committerNeale Ranns <nranns@cisco.com>2018-04-16 13:39:58 +0000
commitc7b430406cb572e318c5b7b805fd98bdae0d680a (patch)
treec084d15c706999656cb236cfa27275019e65a941 /src/vnet/ip
parent5c9083d52646153bdc917a7ae37da696d864ad1c (diff)
Implement ip_probe_neighbor API
Add API support similar to VPP CLI "ip probe-neighbor" except API call is asynch and will not wait, as the CLI does, for address resolution of probed neighbor. The API client can use the APIs want_ip4_arp_events or want_ip6_nd_events to get notified of the desired address resolution event. Change-Id: Ieab58abe75b5cc7f5185b3b91418b6362f8992d3 Signed-off-by: John Lo <loj@cisco.com>
Diffstat (limited to 'src/vnet/ip')
-rw-r--r--src/vnet/ip/ip.api41
-rw-r--r--src/vnet/ip/ip_api.c31
2 files changed, 63 insertions, 9 deletions
diff --git a/src/vnet/ip/ip.api b/src/vnet/ip/ip.api
index 2ca2f56c58b..38024926ab7 100644
--- a/src/vnet/ip/ip.api
+++ b/src/vnet/ip/ip.api
@@ -19,7 +19,7 @@
called through a shared memory interface.
*/
-option version = "1.2.0";
+option version = "1.2.2";
import "vnet/fib/fib_types.api";
/** \brief Add / del table request
@@ -650,12 +650,31 @@ autoreply define ip_source_and_port_range_check_interface_add_del
u32 udp_out_vrf_id;
};
-/** \brief Register for ip4 arp resolution events
+/** \brief IP probe neighbor address on an interface by sending an
+ ARP request (for IP4) or ICMP6 Neighbor Solicitation (for IP6)
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param sw_if_index - interface index
+ @param dst_address - target IP address to send IP addr resolution request
+ @param is_ipv6 - [1|0] to indicate if address family is IPv[6|4]
+*/
+autoreply define ip_probe_neighbor
+{
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+ u8 dst_address[16];
+ u8 is_ipv6;
+};
+
+/** \brief Register for IP4 ARP resolution event on receing ARP reply or
+ MAC/IP info from ARP requests in L2 BDs
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@param enable_disable - 1 => register for events, 0 => cancel registration
@param pid - sender's pid
- @param address - the exact ip4 address of interest
+ @param address - exact IP4 address of interested arp resolution event, or
+ 0 to get MAC/IP info from ARP requests in BDs
*/
autoreply define want_ip4_arp_events
{
@@ -666,13 +685,14 @@ autoreply define want_ip4_arp_events
u32 address;
};
-/** \brief Tell client about an ip4 arp resolution event
+/** \brief Tell client about an IP4 ARP resolution event or
+ MAC/IP info from ARP requests in L2 BDs
@param client_index - opaque cookie to identify the sender
@param address - the exact ip4 address of interest
@param pid - client pid registered to receive notification
@param sw_if_index - interface which received ARP packet
@param new_mac - the new mac address
- @param mac_ip - 0: resolution event, 1: mac/ip binding in bd
+ @param mac_ip - 0: ARP resolution event, 1: MAC/IP info from L2 BDs
*/
define ip4_arp_event
{
@@ -689,12 +709,14 @@ service {
events ip4_arp_event;
};
-/** \brief Register for ip6 nd resolution events
+/** \brief Register for IP6 ND resolution event on recieving NA reply
+ MAC/IP info from ICMP6 Neighbor Solicitation in L2 BDs
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
@param enable_disable - 1 => register for events, 0 => cancel registration
@param pid - sender's pid
- @param address - the exact ip6 address of interest
+ @param address - the exact IP6 address of interested ND resolution event, or
+ 0 to get MAC/IP info from ICMP6 NS in L2 BDs.
*/
autoreply define want_ip6_nd_events
{
@@ -705,13 +727,14 @@ autoreply define want_ip6_nd_events
u8 address[16];
};
-/** \brief Tell client about an ip6 nd resolution or mac/ip event
+/** \brief Tell client about an IP6 ND resolution or
+ MAC/IP info from ICMP6 Neighbor Solicitation in L2 BDs.
@param client_index - opaque cookie to identify the sender
@param pid - client pid registered to receive notification
@param sw_if_index - interface which received ARP packet
@param address - the exact ip6 address of interest
@param new_mac - the new mac address
- @param mac_ip - 0: resolution event, 1: mac/ip binding in bd
+ @param mac_ip - 0: ND resolution event, 1: MAC/IP info from L2 BDs
*/
define ip6_nd_event
{
diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c
index 0b0a7a949e0..69ff719f3b9 100644
--- a/src/vnet/ip/ip_api.c
+++ b/src/vnet/ip/ip_api.c
@@ -76,6 +76,7 @@ _(IP_ADDRESS_DUMP, ip_address_dump) \
_(IP_DUMP, ip_dump) \
_(IP_NEIGHBOR_ADD_DEL, ip_neighbor_add_del) \
_(SET_ARP_NEIGHBOR_LIMIT, set_arp_neighbor_limit) \
+_(IP_PROBE_NEIGHBOR, ip_probe_neighbor) \
_(WANT_IP4_ARP_EVENTS, want_ip4_arp_events) \
_(WANT_IP6_ND_EVENTS, want_ip6_nd_events) \
_(WANT_IP6_RA_EVENTS, want_ip6_ra_events) \
@@ -2684,6 +2685,36 @@ static void
REPLY_MACRO (VL_API_PROXY_ARP_INTFC_ENABLE_DISABLE_REPLY);
}
+static void
+vl_api_ip_probe_neighbor_t_handler (vl_api_ip_probe_neighbor_t * mp)
+{
+ int rv = 0;
+ vlib_main_t *vm = vlib_get_main ();
+ vl_api_ip_probe_neighbor_reply_t *rmp;
+ clib_error_t *error;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+
+ if (mp->is_ipv6)
+ error = ip6_probe_neighbor (vm, (ip6_address_t *) mp->dst_address,
+ sw_if_index);
+ else
+ error = ip4_probe_neighbor (vm, (ip4_address_t *) mp->dst_address,
+ sw_if_index);
+
+ if (error)
+ {
+ clib_error_report (error);
+ rv = clib_error_get_code (error);
+ }
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_PROXY_ARP_INTFC_ENABLE_DISABLE_REPLY);
+}
+
static int
ip4_reset_fib_t_handler (vl_api_reset_fib_t * mp)
{