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linux-cp: lcp fib fixes

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Some possible side effects for multicast routes appears to be in
lcp_router_table_add_or_lock. so ff00/8 route will be processed
for ospf purposes the right way
 Ignore IPv6 kernel routes
 Skip adding auto routes into FIB

Type: fix

Signed-off-by: Vladimir Ratnikov <vratnikov@netgate.com>
Change-Id: I35f73d629a7fffca7f7d4547adc2549b72c2048f
This commit is contained in:
Vladimir Ratnikov
2022-03-02 10:31:42 +00:00
committed by Matthew Smith
parent fe6d8a3706
commit 53f8a272a6
1 changed files with 6 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/plugins/linux-cp/lcp_router.c
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@ -941,10 +941,12 @@ lcp_router_route_add (struct rtnl_route *rr)
lcp_router_route_mk_prefix (rr, &pfx); lcp_router_route_mk_prefix (rr, &pfx);
entry_flags = lcp_router_route_mk_entry_flags (rtype, table_id, rproto); entry_flags = lcp_router_route_mk_entry_flags (rtype, table_id, rproto);
/* link local IPv6 */ nlt = lcp_router_table_add_or_lock (table_id, pfx.fp_proto);
if (FIB_PROTOCOL_IP6 == pfx.fp_proto && /* Skip any kernel routes and IPv6 LL or multicast routes */
(ip6_address_is_multicast (&pfx.fp_addr.ip6) || if (rproto == RTPROT_KERNEL ||
ip6_address_is_link_local_unicast (&pfx.fp_addr.ip6))) (FIB_PROTOCOL_IP6 == pfx.fp_proto &&
(ip6_address_is_multicast (&pfx.fp_addr.ip6) ||
ip6_address_is_link_local_unicast (&pfx.fp_addr.ip6))))
{ {
LCP_ROUTER_DBG ("route skip: %d:%U %U", rtnl_route_get_table (rr), LCP_ROUTER_DBG ("route skip: %d:%U %U", rtnl_route_get_table (rr),
format_fib_prefix, &pfx, format_fib_entry_flags, format_fib_prefix, &pfx, format_fib_entry_flags,
@ -968,7 +970,6 @@ lcp_router_route_add (struct rtnl_route *rr)
if (0 != vec_len (np.paths)) if (0 != vec_len (np.paths))
{ {
nlt = lcp_router_table_add_or_lock (table_id, pfx.fp_proto);
if (rtype == RTN_MULTICAST) if (rtype == RTN_MULTICAST)
{ {
/* it's not clear to me how linux expresses the RPF paramters /* it's not clear to me how linux expresses the RPF paramters