diff options
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index a4082be1b9b4..403e28302869 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -658,6 +658,7 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw, fnhe->fnhe_next = hash->chain; rcu_assign_pointer(hash->chain, fnhe); } + fnhe->fnhe_genid = fnhe_genid(dev_net(nh->nh_dev)); fnhe->fnhe_daddr = daddr; fnhe->fnhe_gw = gw; fnhe->fnhe_pmtu = pmtu; @@ -1236,8 +1237,11 @@ static bool rt_bind_exception(struct rtable *rt, struct fib_nh_exception *fnhe, spin_lock_bh(&fnhe_lock); if (daddr == fnhe->fnhe_daddr) { + int genid = fnhe_genid(dev_net(rt->dst.dev)); struct rtable *orig = rcu_dereference(fnhe->fnhe_rth); - if (orig && rt_is_expired(orig)) { + + if (fnhe->fnhe_genid != genid) { + fnhe->fnhe_genid = genid; fnhe->fnhe_gw = 0; fnhe->fnhe_pmtu = 0; fnhe->fnhe_expires = 0; @@ -2443,8 +2447,11 @@ static int ipv4_sysctl_rtcache_flush(ctl_table *__ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { + struct net *net = (struct net *)__ctl->extra1; + if (write) { - rt_cache_flush((struct net *)__ctl->extra1); + rt_cache_flush(net); + fnhe_genid_bump(net); return 0; } @@ -2619,6 +2626,7 @@ static __net_initdata struct pernet_operations sysctl_route_ops = { static __net_init int rt_genid_init(struct net *net) { atomic_set(&net->rt_genid, 0); + atomic_set(&net->fnhe_genid, 0); get_random_bytes(&net->ipv4.dev_addr_genid, sizeof(net->ipv4.dev_addr_genid)); return 0; |