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net: common metrics init helper for FIB entries

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Consolidate initialization of ipv4 and ipv6 metrics when fib entries
are created into a single helper, ip_fib_metrics_init, that handles
the call to ip_metrics_convert.

If no metrics are defined for the fib entry, then the metrics is set
to dst_default_metrics.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-10-04 20:07:51 -07:00 • committed by David S. Miller
commit 767a221753
5 changed files with 43 additions and 49 deletions
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4
include/net/ip.h
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@ -420,8 +420,8 @@ static inline unsigned int ip_skb_dst_mtu(struct sock *sk,
return min(READ_ONCE(skb_dst(skb)->dev->mtu), IP_MAX_MTU);
}
int ip_metrics_convert(struct net *net, struct nlattr *fc_mx, int fc_mx_len,
u32 *metrics);
struct dst_metrics *ip_fib_metrics_init(struct net *net, struct nlattr *fc_mx,
int fc_mx_len);
u32 ip_idents_reserve(u32 hash, int segs);
void __ip_select_ident(struct net *net, struct iphdr *iph, int segs);