ipv4: Adjust in_dev handling in fib_validate_source()
Checking for in_dev being NULL is pointless.
In fact, all of our callers have in_dev precomputed already,
so just pass it in and remove the NULL checking.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 1d13217..c84cff5 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -226,15 +226,14 @@
* called with rcu_read_lock()
*/
int fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst, u8 tos,
- int oif, struct net_device *dev, u32 *itag)
+ int oif, struct net_device *dev, struct in_device *idev,
+ u32 *itag)
{
- struct in_device *in_dev;
- struct flowi4 fl4;
+ int ret, no_addr, rpf, accept_local;
struct fib_result res;
- int no_addr, rpf, accept_local;
- bool dev_match;
- int ret;
+ struct flowi4 fl4;
struct net *net;
+ bool dev_match;
fl4.flowi4_oif = 0;
fl4.flowi4_iif = oif;
@@ -244,19 +243,13 @@
fl4.flowi4_scope = RT_SCOPE_UNIVERSE;
no_addr = rpf = accept_local = 0;
- in_dev = __in_dev_get_rcu(dev);
- if (in_dev) {
- no_addr = in_dev->ifa_list == NULL;
+ no_addr = idev->ifa_list == NULL;
- /* Ignore rp_filter for packets protected by IPsec. */
- rpf = secpath_exists(skb) ? 0 : IN_DEV_RPFILTER(in_dev);
+ /* Ignore rp_filter for packets protected by IPsec. */
+ rpf = secpath_exists(skb) ? 0 : IN_DEV_RPFILTER(idev);
- accept_local = IN_DEV_ACCEPT_LOCAL(in_dev);
- fl4.flowi4_mark = IN_DEV_SRC_VMARK(in_dev) ? skb->mark : 0;
- }
-
- if (in_dev == NULL)
- goto e_inval;
+ accept_local = IN_DEV_ACCEPT_LOCAL(idev);
+ fl4.flowi4_mark = IN_DEV_SRC_VMARK(idev) ? skb->mark : 0;
net = dev_net(dev);
if (fib_lookup(net, &fl4, &res))