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authorNeale Ranns <neale.ranns@cisco.com>2018-02-24 02:11:19 -0800
committerDamjan Marion <dmarion.lists@gmail.com>2018-03-05 18:41:12 +0000
commit53da221b13225695516ec7469ca29d82bb10e594 (patch)
tree10f31c7fd4acd536cef4793b5c542938da7f09dc /src/vnet/ip/ip6.h
parent0e7fe4fddb493350cf78c8126e9cc93d55490c42 (diff)
IP6 link-local table
- IPv6 link local table is a per-SW interface array of IPv6 unicast FIBs - the per-interface ocst is sizeof(fib_table_t) which is small, w.r.t. the cost of an interface - FE80::/10 in the 'global' table points to a DPO that performs a lookup in the input interface's LL fib. Change-Id: Ice834b25ebeeacb2e929d7c864d7ec8c09918cbe Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Diffstat (limited to 'src/vnet/ip/ip6.h')
-rw-r--r--src/vnet/ip/ip6.h33
1 files changed, 22 insertions, 11 deletions
diff --git a/src/vnet/ip/ip6.h b/src/vnet/ip/ip6.h
index 033ecfc43b8..959d72c0fad 100644
--- a/src/vnet/ip/ip6.h
+++ b/src/vnet/ip/ip6.h
@@ -276,25 +276,36 @@ ip6_unaligned_destination_matches_route (ip6_main_t * im,
return 1;
}
+extern int ip6_get_ll_address (u32 sw_if_index, ip6_address_t * addr);
+
always_inline int
ip6_src_address_for_packet (ip_lookup_main_t * lm,
- u32 sw_if_index, ip6_address_t * src)
+ u32 sw_if_index,
+ const ip6_address_t * dst, ip6_address_t * src)
{
- u32 if_add_index = lm->if_address_pool_index_by_sw_if_index[sw_if_index];
- if (PREDICT_TRUE (if_add_index != ~0))
+ if (ip6_address_is_link_local_unicast (dst))
{
- ip_interface_address_t *if_add =
- pool_elt_at_index (lm->if_address_pool, if_add_index);
- ip6_address_t *if_ip = ip_interface_address_get_address (lm, if_add);
- *src = *if_ip;
- return (0);
+ return ip6_get_ll_address (sw_if_index, src);
}
else
{
- src->as_u64[0] = 0;
- src->as_u64[1] = 0;
+ u32 if_add_index =
+ lm->if_address_pool_index_by_sw_if_index[sw_if_index];
+ if (PREDICT_TRUE (if_add_index != ~0))
+ {
+ ip_interface_address_t *if_add =
+ pool_elt_at_index (lm->if_address_pool, if_add_index);
+ ip6_address_t *if_ip =
+ ip_interface_address_get_address (lm, if_add);
+ *src = *if_ip;
+ return (!0);
+ }
}
- return (!0);
+
+ src->as_u64[0] = 0;
+ src->as_u64[1] = 0;
+
+ return (0);
}
/* Find interface address which matches destination. */