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vrf: Move fib6_table into net_vrf

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A later patch removes rt6i_table from rt6_info. Save the ipv6
table for a VRF in net_vrf. fib tables can not be deleted so
no reference counting or locking is required.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2018-04-17 17:33:09 -07:00
committed by David S. Miller
parent 3940746d86
commit 43b059a312
1 changed files with 6 additions and 19 deletions
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25
drivers/net/vrf.c
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@@ -48,6 +48,9 @@ static unsigned int vrf_net_id;
struct net_vrf { struct net_vrf {
struct rtable __rcu *rth; struct rtable __rcu *rth;
struct rt6_info __rcu *rt6; struct rt6_info __rcu *rt6;
#if IS_ENABLED(CONFIG_IPV6)
struct fib6_table *fib6_table;
#endif
u32 tb_id; u32 tb_id;
}; };
@@ -496,7 +499,6 @@ static int vrf_rt6_create(struct net_device *dev)
int flags = DST_HOST | DST_NOPOLICY | DST_NOXFRM; int flags = DST_HOST | DST_NOPOLICY | DST_NOXFRM;
struct net_vrf *vrf = netdev_priv(dev); struct net_vrf *vrf = netdev_priv(dev);
struct net *net = dev_net(dev); struct net *net = dev_net(dev);
struct fib6_table *rt6i_table;
struct rt6_info *rt6; struct rt6_info *rt6;
int rc = -ENOMEM; int rc = -ENOMEM;
@@ -504,8 +506,8 @@ static int vrf_rt6_create(struct net_device *dev)
if (!ipv6_mod_enabled()) if (!ipv6_mod_enabled())
return 0; return 0;
rt6i_table = fib6_new_table(net, vrf->tb_id); vrf->fib6_table = fib6_new_table(net, vrf->tb_id);
if (!rt6i_table) if (!vrf->fib6_table)
goto out; goto out;
/* create a dst for routing packets out a VRF device */ /* create a dst for routing packets out a VRF device */
@@ -513,7 +515,6 @@ static int vrf_rt6_create(struct net_device *dev)
if (!rt6) if (!rt6)
goto out; goto out;
rt6->rt6i_table = rt6i_table;
rt6->dst.output = vrf_output6; rt6->dst.output = vrf_output6;
rcu_assign_pointer(vrf->rt6, rt6); rcu_assign_pointer(vrf->rt6, rt6);
@@ -946,22 +947,8 @@ static struct rt6_info *vrf_ip6_route_lookup(struct net *net,
int flags) int flags)
{ {
struct net_vrf *vrf = netdev_priv(dev); struct net_vrf *vrf = netdev_priv(dev);
struct fib6_table *table = NULL;
struct rt6_info *rt6;
rcu_read_lock(); return ip6_pol_route(net, vrf->fib6_table, ifindex, fl6, skb, flags);
/* fib6_table does not have a refcnt and can not be freed */
rt6 = rcu_dereference(vrf->rt6);
if (likely(rt6))
table = rt6->rt6i_table;
rcu_read_unlock();
if (!table)
return NULL;
return ip6_pol_route(net, table, ifindex, fl6, skb, flags);
} }
static void vrf_ip6_input_dst(struct sk_buff *skb, struct net_device *vrf_dev, static void vrf_ip6_input_dst(struct sk_buff *skb, struct net_device *vrf_dev,