In complemence to ifa_add_loopback_route() and ifa_del_loopback_route()
provide function ifa_switch_loopback_route() that will be used in case when an interface address used for a loopback route goes away, but we have another interface address with same address value and want to preserve loopback route. Sponsored by: Netflix Sponsored by: Nginx, Inc.
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parent
bce78dfe17
commit
592c1d7a8e
19
sys/net/if.c
19
sys/net/if.c
@ -1525,6 +1525,25 @@ ifa_del_loopback_route(struct ifaddr *ifa, struct sockaddr *ia)
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return (error);
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}
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int
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ifa_switch_loopback_route(struct ifaddr *ifa, struct sockaddr *sa)
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{
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struct rtentry *rt;
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rt = rtalloc1_fib(sa, 0, 0, 0);
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if (rt == NULL) {
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log(LOG_DEBUG, "%s: fail", __func__);
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return (EHOSTUNREACH);
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}
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((struct sockaddr_dl *)rt->rt_gateway)->sdl_type =
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ifa->ifa_ifp->if_type;
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((struct sockaddr_dl *)rt->rt_gateway)->sdl_index =
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ifa->ifa_ifp->if_index;
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RTFREE_LOCKED(rt);
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return (0);
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}
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/*
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* XXX: Because sockaddr_dl has deeper structure than the sockaddr
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* structs used to represent other address families, it is necessary
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@ -502,6 +502,7 @@ struct ifnet *ifunit_ref(const char *);
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int ifa_add_loopback_route(struct ifaddr *, struct sockaddr *);
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int ifa_del_loopback_route(struct ifaddr *, struct sockaddr *);
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int ifa_switch_loopback_route(struct ifaddr *, struct sockaddr *);
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struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
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int ifa_ifwithaddr_check(struct sockaddr *);
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