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net: Make dst_alloc() take more explicit initializations.

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Now the dst->dev, dev->obsolete, and dst->flags values can
be specified as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-04-28 14:13:38 -07:00
parent 778865a550
commit 5c1e6aa300
6 changed files with 44 additions and 61 deletions
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40
net/ipv4/route.c
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@@ -1833,17 +1833,13 @@ static void rt_set_nexthop(struct rtable *rt, const struct flowi4 *oldflp4,
rt->rt_type = type;
}
static struct rtable *rt_dst_alloc(bool nopolicy, bool noxfrm)
static struct rtable *rt_dst_alloc(struct net_device *dev,
bool nopolicy, bool noxfrm)
{
struct rtable *rt = dst_alloc(&ipv4_dst_ops, 1);
if (rt) {
rt->dst.obsolete = -1;
rt->dst.flags = DST_HOST |
(nopolicy ? DST_NOPOLICY : 0) |
(noxfrm ? DST_NOXFRM : 0);
}
return rt;
return dst_alloc(&ipv4_dst_ops, dev, 1, -1,
DST_HOST |
(nopolicy ? DST_NOPOLICY : 0) |
(noxfrm ? DST_NOXFRM : 0));
}
/* called in rcu_read_lock() section */
@@ -1876,7 +1872,8 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
if (err < 0)
goto e_err;
}
rth = rt_dst_alloc(IN_DEV_CONF_GET(in_dev, NOPOLICY), false);
rth = rt_dst_alloc(init_net.loopback_dev,
IN_DEV_CONF_GET(in_dev, NOPOLICY), false);
if (!rth)
goto e_nobufs;
@@ -1893,8 +1890,6 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
#endif
rth->rt_route_iif = dev->ifindex;
rth->rt_iif = dev->ifindex;
rth->dst.dev = init_net.loopback_dev;
dev_hold(rth->dst.dev);
rth->rt_oif = 0;
rth->rt_gateway = daddr;
rth->rt_spec_dst= spec_dst;
@@ -2013,7 +2008,8 @@ static int __mkroute_input(struct sk_buff *skb,
}
}
rth = rt_dst_alloc(IN_DEV_CONF_GET(in_dev, NOPOLICY),
rth = rt_dst_alloc(out_dev->dev,
IN_DEV_CONF_GET(in_dev, NOPOLICY),
IN_DEV_CONF_GET(out_dev, NOXFRM));
if (!rth) {
err = -ENOBUFS;
@@ -2029,8 +2025,6 @@ static int __mkroute_input(struct sk_buff *skb,
rth->rt_gateway = daddr;
rth->rt_route_iif = in_dev->dev->ifindex;
rth->rt_iif = in_dev->dev->ifindex;
rth->dst.dev = (out_dev)->dev;
dev_hold(rth->dst.dev);
rth->rt_oif = 0;
rth->rt_spec_dst= spec_dst;
@@ -2188,7 +2182,8 @@ brd_input:
RT_CACHE_STAT_INC(in_brd);
local_input:
rth = rt_dst_alloc(IN_DEV_CONF_GET(in_dev, NOPOLICY), false);
rth = rt_dst_alloc(net->loopback_dev,
IN_DEV_CONF_GET(in_dev, NOPOLICY), false);
if (!rth)
goto e_nobufs;
@@ -2206,8 +2201,6 @@ local_input:
#endif
rth->rt_route_iif = dev->ifindex;
rth->rt_iif = dev->ifindex;
rth->dst.dev = net->loopback_dev;
dev_hold(rth->dst.dev);
rth->rt_gateway = daddr;
rth->rt_spec_dst= spec_dst;
rth->dst.input= ip_local_deliver;
@@ -2392,7 +2385,8 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
fi = NULL;
}
rth = rt_dst_alloc(IN_DEV_CONF_GET(in_dev, NOPOLICY),
rth = rt_dst_alloc(dev_out,
IN_DEV_CONF_GET(in_dev, NOPOLICY),
IN_DEV_CONF_GET(in_dev, NOXFRM));
if (!rth)
return ERR_PTR(-ENOBUFS);
@@ -2406,10 +2400,6 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
rth->rt_src = fl4->saddr;
rth->rt_route_iif = 0;
rth->rt_iif = oldflp4->flowi4_oif ? : dev_out->ifindex;
/* get references to the devices that are to be hold by the routing
cache entry */
rth->dst.dev = dev_out;
dev_hold(dev_out);
rth->rt_gateway = fl4->daddr;
rth->rt_spec_dst= fl4->saddr;
@@ -2711,7 +2701,7 @@ static struct dst_ops ipv4_dst_blackhole_ops = {
struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_orig)
{
struct rtable *rt = dst_alloc(&ipv4_dst_blackhole_ops, 1);
struct rtable *rt = dst_alloc(&ipv4_dst_blackhole_ops, NULL, 1, 0, 0);
struct rtable *ort = (struct rtable *) dst_orig;
if (rt) {