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authorNeale Ranns <nranns@cisco.com>2019-09-30 10:53:31 +0000
committerOle Trøan <otroan@employees.org>2019-12-17 10:56:20 +0000
commitcbe25aab3be72154f2c706c39eeba6a77f34450f (patch)
tree131fb53b5ec973be045ffb9e2eb797af01d112a0 /src/vnet/ethernet/interface.c
parent96453fd2417ebd1d69354a7fb692976129cea80e (diff)
ip: Protocol Independent IP Neighbors
Type: feature - ip-neighbour: generic neighbour handling; APIs, DBs, event handling, aging - arp: ARP protocol implementation - ip6-nd; IPv6 neighbor discovery implementation; separate ND, MLD, RA - ip6-link; manage link-local addresses - l2-arp-term; events separated from IP neighbours, since they are not the same. vnet retains just enough education to perform ND/ARP packet construction. arp and ip6-nd to be moved to plugins soon. Change-Id: I88dedd0006b299344f4c7024a0aa5baa6b9a8bbe Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ethernet/interface.c')
-rw-r--r--src/vnet/ethernet/interface.c89
1 files changed, 71 insertions, 18 deletions
diff --git a/src/vnet/ethernet/interface.c b/src/vnet/ethernet/interface.c
index d79669206a9..39e5cfb3cf8 100644
--- a/src/vnet/ethernet/interface.c
+++ b/src/vnet/ethernet/interface.c
@@ -41,10 +41,12 @@
#include <vnet/ip/ip.h>
#include <vnet/pg/pg.h>
#include <vnet/ethernet/ethernet.h>
-#include <vnet/ethernet/arp.h>
+//#include <vnet/ethernet/arp.h>
#include <vnet/l2/l2_input.h>
#include <vnet/l2/l2_bd.h>
#include <vnet/adj/adj.h>
+#include <vnet/adj/adj_mcast.h>
+#include <vnet/ip-neighbor/ip_neighbor.h>
/**
* @file
@@ -53,7 +55,7 @@
* This file contains code to manage loopback interfaces.
*/
-const u8 *
+static const u8 *
ethernet_ip4_mcast_dst_addr (void)
{
const static u8 ethernet_mcast_dst_mac[] = {
@@ -63,7 +65,7 @@ ethernet_ip4_mcast_dst_addr (void)
return (ethernet_mcast_dst_mac);
}
-const u8 *
+static const u8 *
ethernet_ip6_mcast_dst_addr (void)
{
const static u8 ethernet_mcast_dst_mac[] = {
@@ -195,27 +197,74 @@ ethernet_build_rewrite (vnet_main_t * vnm,
void
ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
{
- ip_adjacency_t *adj;
-
- adj = adj_get (ai);
-
vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
+
if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
(si->type == VNET_SW_INTERFACE_TYPE_PIPE))
{
default_update_adjacency (vnm, sw_if_index, ai);
}
- else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
- {
- arp_update_adjacency (vnm, sw_if_index, ai);
- }
- else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
- {
- ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
- }
else
{
- ASSERT (0);
+ ip_adjacency_t *adj;
+
+ adj = adj_get (ai);
+
+ switch (adj->lookup_next_index)
+ {
+ case IP_LOOKUP_NEXT_GLEAN:
+ adj_glean_update_rewrite (ai);
+ break;
+ case IP_LOOKUP_NEXT_ARP:
+ ip_neighbor_update (vnm, ai);
+ break;
+ case IP_LOOKUP_NEXT_BCAST:
+ adj_nbr_update_rewrite (ai,
+ ADJ_NBR_REWRITE_FLAG_COMPLETE,
+ ethernet_build_rewrite
+ (vnm,
+ adj->rewrite_header.sw_if_index,
+ adj->ia_link,
+ VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
+ break;
+ case IP_LOOKUP_NEXT_MCAST:
+ {
+ /*
+ * Construct a partial rewrite from the known ethernet mcast dest MAC
+ */
+ u8 *rewrite;
+ u8 offset;
+
+ rewrite = ethernet_build_rewrite
+ (vnm,
+ sw_if_index,
+ adj->ia_link,
+ (adj->ia_nh_proto == FIB_PROTOCOL_IP6 ?
+ ethernet_ip6_mcast_dst_addr () :
+ ethernet_ip4_mcast_dst_addr ()));
+
+ /*
+ * Complete the remaining fields of the adj's rewrite to direct the
+ * complete of the rewrite at switch time by copying in the IP
+ * dst address's bytes.
+ * Ofset is 2 bytes into the destintation address.
+ */
+ offset = vec_len (rewrite) - 2;
+ adj_mcast_update_rewrite (ai, rewrite, offset);
+
+ break;
+ }
+ case IP_LOOKUP_NEXT_DROP:
+ case IP_LOOKUP_NEXT_PUNT:
+ case IP_LOOKUP_NEXT_LOCAL:
+ case IP_LOOKUP_NEXT_REWRITE:
+ case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
+ case IP_LOOKUP_NEXT_MIDCHAIN:
+ case IP_LOOKUP_NEXT_ICMP_ERROR:
+ case IP_LOOKUP_N_NEXT:
+ ASSERT (0);
+ break;
+ }
}
}
@@ -234,8 +283,12 @@ ethernet_mac_change (vnet_hw_interface_t * hi,
clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
- ethernet_arp_change_mac (hi->sw_if_index);
- ethernet_ndp_change_mac (hi->sw_if_index);
+
+ {
+ ethernet_address_change_ctx_t *cb;
+ vec_foreach (cb, em->address_change_callbacks)
+ cb->function (em, hi->sw_if_index, cb->function_opaque);
+ }
return (NULL);
}