diff options
Diffstat (limited to 'sys/netinet/in.c')
| -rw-r--r-- | sys/netinet/in.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/sys/netinet/in.c b/sys/netinet/in.c index 1012012..684d808 100644 --- a/sys/netinet/in.c +++ b/sys/netinet/in.c @@ -70,7 +70,7 @@ static int in_lifaddr_ioctl(struct socket *, u_long, caddr_t, struct ifnet *, struct thread *); static int in_addprefix(struct in_ifaddr *, int); -static int in_scrubprefix(struct in_ifaddr *); +static int in_scrubprefix(struct in_ifaddr *, u_int); static void in_socktrim(struct sockaddr_in *); static int in_ifinit(struct ifnet *, struct in_ifaddr *, struct sockaddr_in *, int); @@ -548,7 +548,7 @@ in_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp, * is the same as before, then the call is * un-necessarily executed here. */ - in_ifscrub(ifp, ia); + in_ifscrub(ifp, ia, 0); ia->ia_sockmask = ifra->ifra_mask; ia->ia_sockmask.sin_family = AF_INET; ia->ia_subnetmask = @@ -557,7 +557,7 @@ in_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp, } if ((ifp->if_flags & IFF_POINTOPOINT) && (ifra->ifra_dstaddr.sin_family == AF_INET)) { - in_ifscrub(ifp, ia); + in_ifscrub(ifp, ia, 0); ia->ia_dstaddr = ifra->ifra_dstaddr; maskIsNew = 1; /* We lie; but the effect's the same */ } @@ -585,7 +585,7 @@ in_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp, /* * in_ifscrub kills the interface route. */ - in_ifscrub(ifp, ia); + in_ifscrub(ifp, ia, LLE_STATIC); /* * in_ifadown gets rid of all the rest of @@ -829,10 +829,10 @@ in_lifaddr_ioctl(struct socket *so, u_long cmd, caddr_t data, * Delete any existing route for an interface. */ void -in_ifscrub(struct ifnet *ifp, struct in_ifaddr *ia) +in_ifscrub(struct ifnet *ifp, struct in_ifaddr *ia, u_int flags) { - in_scrubprefix(ia); + in_scrubprefix(ia, flags); } /* @@ -887,7 +887,7 @@ in_ifinit(struct ifnet *ifp, struct in_ifaddr *ia, struct sockaddr_in *sin, splx(s); if (scrub) { ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr; - in_ifscrub(ifp, ia); + in_ifscrub(ifp, ia, LLE_STATIC); ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr; } if (IN_CLASSA(i)) @@ -1095,7 +1095,7 @@ extern void arp_ifscrub(struct ifnet *ifp, uint32_t addr); * otherwise. */ static int -in_scrubprefix(struct in_ifaddr *target) +in_scrubprefix(struct in_ifaddr *target, u_int flags) { struct in_ifaddr *ia; struct in_addr prefix, mask, p; @@ -1130,13 +1130,15 @@ in_scrubprefix(struct in_ifaddr *target) RT_REMREF(ia_ro.ro_rt); RTFREE_LOCKED(ia_ro.ro_rt); } - if (freeit) + if (freeit && (flags & LLE_STATIC)) { error = ifa_del_loopback_route((struct ifaddr *)target, (struct sockaddr *)&target->ia_addr); - if (error == 0) - target->ia_flags &= ~IFA_RTSELF; - /* remove arp cache */ - arp_ifscrub(target->ia_ifp, IA_SIN(target)->sin_addr.s_addr); + if (error == 0) + target->ia_flags &= ~IFA_RTSELF; + } + if (flags & LLE_STATIC) + /* remove arp cache */ + arp_ifscrub(target->ia_ifp, IA_SIN(target)->sin_addr.s_addr); } if (rtinitflags(target)) @@ -1203,7 +1205,7 @@ in_scrubprefix(struct in_ifaddr *target) mask0.sin_family = AF_INET; mask0.sin_addr.s_addr = target->ia_subnetmask; lltable_prefix_free(AF_INET, (struct sockaddr *)&prefix0, - (struct sockaddr *)&mask0); + (struct sockaddr *)&mask0, flags); /* * As no-one seem to have this prefix, we can remove the route. @@ -1362,7 +1364,8 @@ in_lltable_free(struct lltable *llt, struct llentry *lle) static void in_lltable_prefix_free(struct lltable *llt, const struct sockaddr *prefix, - const struct sockaddr *mask) + const struct sockaddr *mask, + u_int flags) { const struct sockaddr_in *pfx = (const struct sockaddr_in *)prefix; const struct sockaddr_in *msk = (const struct sockaddr_in *)mask; @@ -1373,8 +1376,13 @@ in_lltable_prefix_free(struct lltable *llt, for (i=0; i < LLTBL_HASHTBL_SIZE; i++) { LIST_FOREACH_SAFE(lle, &llt->lle_head[i], lle_next, next) { + /* + * (flags & LLE_STATIC) means deleting all entries + * including static ARP entries + */ if (IN_ARE_MASKED_ADDR_EQUAL((struct sockaddr_in *)L3_ADDR(lle), - pfx, msk)) { + pfx, msk) && + ((flags & LLE_STATIC) || !(lle->la_flags & LLE_STATIC))) { int canceled; canceled = callout_drain(&lle->la_timer); |
