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Use interface fib for proxyarp checks.

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Before the change, proxyarp checks for src and dst addresses
 were performed using default fib, breaking multi-fib scenario.

PR:		245181
Submitted by:	Scott Aitken (original version)
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D24244
This commit is contained in:
melifaro 2020-04-02 20:06:37 +00:00
parent 5a596a5c60
commit b1eecb3df7
1 changed files with 9 additions and 5 deletions
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14
sys/netinet/if_ether.c
View File

@ -1044,7 +1044,11 @@ in_arpinput(struct mbuf *m)
(void)memcpy(ar_tha(ah), ar_sha(ah), ah->ar_hln);
(void)memcpy(ar_sha(ah), enaddr, ah->ar_hln);
} else {
struct llentry *lle = NULL;
/*
* Destination address is not ours. Check if
* proxyarp entry exists or proxyarp is turned on globally.
*/
struct llentry *lle;
sin.sin_addr = itaddr;
lle = lla_lookup(LLTABLE(ifp), 0, (struct sockaddr *)&sin);
@ -1061,8 +1065,8 @@ in_arpinput(struct mbuf *m)
if (!V_arp_proxyall)
goto drop;
/* XXX MRT use table 0 for arp reply */
if (fib4_lookup_nh_basic(0, itaddr, 0, 0, &nh4) != 0)
if (fib4_lookup_nh_basic(ifp->if_fib, itaddr, 0, 0,
&nh4) != 0)
goto drop;
/*
@ -1083,8 +1087,8 @@ in_arpinput(struct mbuf *m)
* wrong network.
*/
/* XXX MRT use table 0 for arp checks */
if (fib4_lookup_nh_basic(0, isaddr, 0, 0, &nh4) != 0)
if (fib4_lookup_nh_basic(ifp->if_fib, isaddr, 0, 0,
&nh4) != 0)
goto drop;
if (nh4.nh_ifp != ifp) {
ARP_LOG(LOG_INFO, "proxy: ignoring request"