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Decompose arp_ifinit() into arp_add_ifa_lle() and arp_announce_ifaddr().

Browse Source 
Rename arp_ifinit2() into arp_announce_ifaddr().

Eliminate zeroing ifa_rtrequest: it was used for calling arp_rtrequest()
which was responsible for handling route cloning requests. It became
obsolete since r186119 (L2/L3 split).
This commit is contained in:
melifaro 2015-11-09 10:35:33 +00:00
parent a0ced91366
commit 90aacc3eb3
3 changed files with 36 additions and 27 deletions
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51
sys/netinet/if_ether.c
View File

@ -1091,26 +1091,13 @@ arp_mark_lle_reachable(struct llentry *la)
la->la_preempt = V_arp_maxtries;
}
void
arp_ifinit(struct ifnet *ifp, struct ifaddr *ifa)
/*
* Add pernament link-layer record for given interface address.
*/
static __noinline void
arp_add_ifa_lle(struct ifnet *ifp, const struct sockaddr *dst)
{
struct llentry *lle, *lle_tmp;
struct sockaddr_in *dst_in;
struct sockaddr *dst;
if (ifa->ifa_carp != NULL)
return;
ifa->ifa_rtrequest = NULL;
dst_in = IA_SIN(ifa);
dst = (struct sockaddr *)dst_in;
if (ntohl(IA_SIN(ifa)->sin_addr.s_addr) == INADDR_ANY)
return;
arprequest(ifp, &IA_SIN(ifa)->sin_addr,
&IA_SIN(ifa)->sin_addr, IF_LLADDR(ifp));
/*
* Interface address LLE record is considered static
@ -1144,12 +1131,30 @@ arp_ifinit(struct ifnet *ifp, struct ifaddr *ifa)
}
void
arp_ifinit2(struct ifnet *ifp, struct ifaddr *ifa, u_char *enaddr)
arp_ifinit(struct ifnet *ifp, struct ifaddr *ifa)
{
if (ntohl(IA_SIN(ifa)->sin_addr.s_addr) != INADDR_ANY)
arprequest(ifp, &IA_SIN(ifa)->sin_addr,
&IA_SIN(ifa)->sin_addr, enaddr);
ifa->ifa_rtrequest = NULL;
const struct sockaddr_in *dst_in;
const struct sockaddr *dst;
if (ifa->ifa_carp != NULL)
return;
dst = ifa->ifa_addr;
dst_in = (const struct sockaddr_in *)dst;
if (ntohl(dst_in->sin_addr.s_addr) == INADDR_ANY)
return;
arp_announce_ifaddr(ifp, dst_in->sin_addr, IF_LLADDR(ifp));
arp_add_ifa_lle(ifp, dst);
}
void
arp_announce_ifaddr(struct ifnet *ifp, struct in_addr addr, u_char *enaddr)
{
if (ntohl(addr.s_addr) != INADDR_ANY)
arprequest(ifp, &addr, &addr, enaddr);
}
/*

2
sys/netinet/if_ether.h
View File

@ -119,7 +119,7 @@ int arpresolve(struct ifnet *ifp, int is_gw, struct mbuf *m,
void arprequest(struct ifnet *, const struct in_addr *,
const struct in_addr *, u_char *);
void arp_ifinit(struct ifnet *, struct ifaddr *);
void arp_ifinit2(struct ifnet *, struct ifaddr *, u_char *);
void arp_announce_ifaddr(struct ifnet *, struct in_addr addr, u_char *);
#endif
#endif

10
sys/netinet/ip_carp.c
View File

@ -1009,10 +1009,14 @@ static void
carp_send_arp(struct carp_softc *sc)
{
struct ifaddr *ifa;
struct in_addr addr;
CARP_FOREACH_IFA(sc, ifa)
if (ifa->ifa_addr->sa_family == AF_INET)
arp_ifinit2(sc->sc_carpdev, ifa, LLADDR(&sc->sc_addr));
CARP_FOREACH_IFA(sc, ifa) {
if (ifa->ifa_addr->sa_family != AF_INET)
continue;
addr = ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr;
arp_announce_ifaddr(sc->sc_carpdev, addr, LLADDR(&sc->sc_addr));
}
}
int