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authorNeale Ranns <nranns@cisco.com>2017-03-11 05:55:21 -0800
committerFlorin Coras <florin.coras@gmail.com>2017-03-17 15:49:39 +0000
commit4b919a56642ccd0a44920feace872aeb5b7a62cf (patch)
tree17750f4efc80d7863b68f9cd08ab381cd00dd534 /src/vnet/fib/fib_path.c
parentc60f557590f79b8817382bdd982825b66c4e0a73 (diff)
Attached hosts
allow this config to function: set int ip address loop0 169.254.1.1/32 (the default GW address for attached hosts) set int unnumbered af_packet0 use loop0 ('enable' IP on the host interface) ip route add 192.168.1.1/32 via af_packet0 (where to find the host) repeat for each host and host interface. Inter-host communication is throught the /32 routes. To allow this: 1 - attached host routes have the ATTACHED flag set, so the ARP code accepts then as legitimate sources 2 - unnumbered interfaces inherit the source address from the IP interface Change-Id: Ib66c5f0e848c528f79372813adc3a0c11b50717f Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/fib/fib_path.c')
-rw-r--r--src/vnet/fib/fib_path.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/vnet/fib/fib_path.c b/src/vnet/fib/fib_path.c
index aa545b5ed45..3ed309f328b 100644
--- a/src/vnet/fib/fib_path.c
+++ b/src/vnet/fib/fib_path.c
@@ -110,6 +110,10 @@ typedef enum fib_path_oper_attribute_t_ {
*/
FIB_PATH_OPER_ATTRIBUTE_RESOLVED,
/**
+ * The path is attached, despite what the next-hop may say.
+ */
+ FIB_PATH_OPER_ATTRIBUTE_ATTACHED,
+ /**
* The path has become a permanent drop.
*/
FIB_PATH_OPER_ATTRIBUTE_DROP,
@@ -143,6 +147,7 @@ typedef enum fib_path_oper_flags_t_ {
FIB_PATH_OPER_FLAG_RECURSIVE_LOOP = (1 << FIB_PATH_OPER_ATTRIBUTE_RECURSIVE_LOOP),
FIB_PATH_OPER_FLAG_DROP = (1 << FIB_PATH_OPER_ATTRIBUTE_DROP),
FIB_PATH_OPER_FLAG_RESOLVED = (1 << FIB_PATH_OPER_ATTRIBUTE_RESOLVED),
+ FIB_PATH_OPER_FLAG_ATTACHED = (1 << FIB_PATH_OPER_ATTRIBUTE_ATTACHED),
} __attribute__ ((packed)) fib_path_oper_flags_t;
/**
@@ -963,6 +968,8 @@ fib_path_route_flags_to_cfg_flags (const fib_route_path_t *rpath)
cfg_flags |= FIB_PATH_CFG_FLAG_RESOLVE_ATTACHED;
if (rpath->frp_flags & FIB_ROUTE_PATH_LOCAL)
cfg_flags |= FIB_PATH_CFG_FLAG_LOCAL;
+ if (rpath->frp_flags & FIB_ROUTE_PATH_ATTACHED)
+ cfg_flags |= FIB_PATH_CFG_FLAG_ATTACHED;
return (cfg_flags);
}