Re: [PATCH 1/1] via-rhine: Fix hanging with high CPU load on low-end broads.
From: David Miller <davem@davemloft.net>
Date: 2011-12-29 23:49:53
Also in:
lkml
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
From: Bjarke Istrup Pedersen <redacted> Date: Fri, 30 Dec 2011 00:37:17 +0100
Hmm, it seems like this problem isn't related to the driver, but related to the current HEAD of net-next :)
Please try this patch.
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 30de9e7..4a62c47 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c@@ -129,11 +129,14 @@ static struct neighbour *ip6_neigh_lookup(const struct dst_entry *dst, const voi return neigh_create(&nd_tbl, daddr, dst->dev); } -static int rt6_bind_neighbour(struct rt6_info *rt) +static int rt6_bind_neighbour(struct rt6_info *rt, struct net_device *dev) { - struct neighbour *n = ip6_neigh_lookup(&rt->dst, &rt->rt6i_gateway); - if (IS_ERR(n)) - return PTR_ERR(n); + struct neighbour *n = __ipv6_neigh_lookup(&nd_tbl, dev, &rt->rt6i_gateway); + if (!n) { + n = neigh_create(&nd_tbl, &rt->rt6i_gateway, dev); + if (IS_ERR(n)) + return PTR_ERR(n); + } dst_set_neighbour(&rt->dst, n); return 0;
@@ -746,7 +749,7 @@ static struct rt6_info *rt6_alloc_cow(const struct rt6_info *ort, #endif retry: - if (rt6_bind_neighbour(rt)) { + if (rt6_bind_neighbour(rt, rt->dst.dev)) { struct net *net = dev_net(rt->dst.dev); int saved_rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval;
@@ -1397,7 +1400,7 @@ int ip6_route_add(struct fib6_config *cfg) rt->rt6i_prefsrc.plen = 0; if (cfg->fc_flags & (RTF_GATEWAY | RTF_NONEXTHOP)) { - err = rt6_bind_neighbour(rt); + err = rt6_bind_neighbour(rt, dev); if (err) goto out; }
@@ -2084,7 +2087,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, rt->rt6i_flags |= RTF_ANYCAST; else rt->rt6i_flags |= RTF_LOCAL; - err = rt6_bind_neighbour(rt); + err = rt6_bind_neighbour(rt, rt->dst.dev); if (err) { dst_free(&rt->dst); return ERR_PTR(err);