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net/ipv4: Move device validation to helper

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Move the device matching check in __fib_validate_source to a helper and
export it for use by netfilter modules. Code move only; no functional
change intended.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2018-09-20 13:50:47 -07:00
committed by David S. Miller
parent 5678cb3c96
commit 78f2756c5f
2 changed files with 28 additions and 17 deletions
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include/net/ip_fib.h
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@@ -373,6 +373,7 @@ static inline bool fib4_rules_early_flow_dissect(struct net *net,
extern const struct nla_policy rtm_ipv4_policy[];
void ip_fib_init(void);
__be32 fib_compute_spec_dst(struct sk_buff *skb);
bool fib_info_nh_uses_dev(struct fib_info *fi, const struct net_device *dev);
int fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst,
u8 tos, int oif, struct net_device *dev,
struct in_device *idev, u32 *itag);