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Differential D24609 Diff 71170 head/sys/net/radix_mpath.c

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head/sys/net/radix_mpath.c

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* check if we have the same key/mask/gateway on the table already. * check if we have the same key/mask/gateway on the table already.
* Assume @rt rt_key host bits are cleared according to @netmask * Assume @rt rt_key host bits are cleared according to @netmask
*/ */
int int
rt_mpath_conflict(struct rib_head *rnh, struct rtentry *rt, rt_mpath_conflict(struct rib_head *rnh, struct rtentry *rt,
struct sockaddr *netmask) struct sockaddr *netmask)
{ {
struct radix_node *rn, *rn1; struct radix_node *rn, *rn1;
struct nhop_object *nh, *nh1;
struct rtentry *rt1; struct rtentry *rt1;
rn = (struct radix_node *)rt; rn = (struct radix_node *)rt;
rn1 = rnh->rnh_lookup(rt_key(rt), netmask, &rnh->head); rn1 = rnh->rnh_lookup(rt_key(rt), netmask, &rnh->head);
if (!rn1 || rn1->rn_flags & RNF_ROOT) if (!rn1 || rn1->rn_flags & RNF_ROOT)
return (0); return (0);
/* key/mask are the same. compare gateway for all multipaths */ /* key/mask are the same. compare gateway for all multipaths */
do { do {
rt1 = (struct rtentry *)rn1; rt1 = (struct rtentry *)rn1;
/* sanity: no use in comparing the same thing */ /* sanity: no use in comparing the same thing */
if (rn1 == rn) if (rn1 == rn)
continue; continue;
if (rt1->rt_gateway->sa_family == AF_LINK) { nh = rt->rt_nhop;
if (rt1->rt_ifa->ifa_addr->sa_len != rt->rt_ifa->ifa_addr->sa_len || nh1 = rt1->rt_nhop;
bcmp(rt1->rt_ifa->ifa_addr, rt->rt_ifa->ifa_addr,
rt1->rt_ifa->ifa_addr->sa_len)) if (nh1->gw_sa.sa_family == AF_LINK) {
if (nh1->nh_ifa->ifa_addr->sa_len != nh->nh_ifa->ifa_addr->sa_len ||
bcmp(nh1->nh_ifa->ifa_addr, nh->nh_ifa->ifa_addr,
nh1->nh_ifa->ifa_addr->sa_len))
continue; continue;
} else { } else {
if (rt1->rt_gateway->sa_len != rt->rt_gateway->sa_len || if (nh1->gw_sa.sa_len != nh->gw_sa.sa_len ||
bcmp(rt1->rt_gateway, rt->rt_gateway, bcmp(&nh1->gw_sa, &nh->gw_sa, nh1->gw_sa.sa_len))
rt1->rt_gateway->sa_len))
continue; continue;
} }
/* all key/mask/gateway are the same. conflicting entry. */ /* all key/mask/gateway are the same. conflicting entry. */
return (EEXIST); return (EEXIST);
} while ((rn1 = rn_mpath_next(rn1)) != NULL); } while ((rn1 = rn_mpath_next(rn1)) != NULL);
return (0); return (0);
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