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Remove redundant checks for nhop validity.

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Currently NH_IS_VALID() simly aliases to RT_LINK_IS_UP(), so we're
 checking the same thing twice.

In the near future the implementation of this check will be simpler,
 as there are plans to introduce control-plane interface status monitoring
 similar to ipfw interface tracker.
This commit is contained in:
Alexander V. Chernikov 2020-05-17 15:32:36 +00:00
parent cd3acfe7f3
commit 174fb9dbb1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=361137
1 changed files with 2 additions and 4 deletions
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6
sys/netinet/ip_output.c
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@ -407,8 +407,7 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
* Also check whether routing cache needs invalidation.
*/
if (ro != NULL && ro->ro_nh != NULL &&
((!NH_IS_VALID(ro->ro_nh)) || !RT_LINK_IS_UP(ro->ro_nh->nh_ifp) ||
dst->sin_family != AF_INET ||
((!NH_IS_VALID(ro->ro_nh)) || dst->sin_family != AF_INET ||
dst->sin_addr.s_addr != ip->ip_dst.s_addr))
RO_INVALIDATE_CACHE(ro);
ia = NULL;
@ -480,8 +479,7 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
ro->ro_nh = fib4_lookup(fibnum, dst->sin_addr, 0,
NHR_REF, flowid);
if (ro->ro_nh == NULL || (!NH_IS_VALID(ro->ro_nh)) ||
!RT_LINK_IS_UP(ro->ro_nh->nh_ifp)) {
if (ro->ro_nh == NULL || (!NH_IS_VALID(ro->ro_nh))) {
#if defined(IPSEC) || defined(IPSEC_SUPPORT)
/*
* There is no route for this packet, but it is