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authorNeale Ranns <neale.ranns@cisco.com>2020-11-26 08:37:27 +0000
committerOle Tr�an <otroan@employees.org>2020-12-08 09:00:24 +0000
commite2fe097424fb169dfe01421ff17b8ccd0c26b4a6 (patch)
tree2d9993f78d9165c1aba23b1daa4067106da81b45 /src/vnet/fib/fib_path.c
parent9b8cb5082471dd670066b8ba2872ffbcc35a87f8 (diff)
fib: Source Address Selection
Type: feature Use the FIB to provide SAS (in so far as it is today) - Use the glean adjacency as the record of the connected prefixes = there's a glean per-{interface, protocol, connected-prefix} - Keep the glean up to date with whatever the recieve host prefix is (since it can change) Signed-off-by: Neale Ranns <neale.ranns@cisco.com> Change-Id: I0f3dd1edb1f3fc965af1c7c586709028eb9cdeac
Diffstat (limited to 'src/vnet/fib/fib_path.c')
-rw-r--r--src/vnet/fib/fib_path.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/src/vnet/fib/fib_path.c b/src/vnet/fib/fib_path.c
index 2cee8467647..2a4e6ab551f 100644
--- a/src/vnet/fib/fib_path.c
+++ b/src/vnet/fib/fib_path.c
@@ -246,6 +246,10 @@ typedef struct fib_path_t_ {
} attached_next_hop;
struct {
/**
+ * The Connected local address
+ */
+ fib_prefix_t fp_connected;
+ /**
* The interface
*/
u32 fp_interface;
@@ -732,7 +736,7 @@ fib_path_attached_get_adj (fib_path_t *path,
ai = adj_glean_add_or_lock(nh_proto, link,
path->attached.fp_interface,
- NULL);
+ &path->attached.fp_connected);
dpo_set(dpo, DPO_ADJACENCY_GLEAN, vnet_link_to_dpo_proto(link), ai);
adj_unlock(ai);
}
@@ -1262,6 +1266,8 @@ fib_path_route_flags_to_cfg_flags (const fib_route_path_t *rpath)
cfg_flags |= FIB_PATH_CFG_FLAG_ICMP_UNREACH;
if (rpath->frp_flags & FIB_ROUTE_PATH_ICMP_PROHIBIT)
cfg_flags |= FIB_PATH_CFG_FLAG_ICMP_PROHIBIT;
+ if (rpath->frp_flags & FIB_ROUTE_PATH_GLEAN)
+ cfg_flags |= FIB_PATH_CFG_FLAG_GLEAN;
return (cfg_flags);
}
@@ -1365,6 +1371,12 @@ fib_path_create (fib_node_index_t pl_index,
path->fp_type = FIB_PATH_TYPE_SPECIAL;
path->classify.fp_classify_table_id = rpath->frp_classify_table_id;
}
+ else if (path->fp_cfg_flags & FIB_PATH_CFG_FLAG_GLEAN)
+ {
+ path->fp_type = FIB_PATH_TYPE_ATTACHED;
+ path->attached.fp_interface = rpath->frp_sw_if_index;
+ path->attached.fp_connected = rpath->frp_connected;
+ }
else if (~0 != rpath->frp_sw_if_index)
{
if (ip46_address_is_zero(&rpath->frp_addr))
@@ -2105,7 +2117,7 @@ fib_path_resolve (fib_node_index_t path_index)
break;
}
case FIB_PATH_TYPE_DVR:
- dvr_dpo_add_or_lock(path->attached.fp_interface,
+ dvr_dpo_add_or_lock(path->dvr.fp_interface,
path->fp_nh_proto,
&path->fp_dpo);
break;