diff options
| author | David Ahern <dsahern@gmail.com> | 2018-10-04 20:07:51 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-04 21:54:03 -0700 |
| commit | 767a2217533fed696af0d06bee7746d34c4e00aa (patch) | |
| tree | 345d862ce8fe8019b15deb0c591dc7760b3d554c /net/ipv4/metrics.c | |
| parent | d26d4b194e582c6f2070cc5f7f74a72124ad41ef (diff) | |
net: common metrics init helper for FIB entries
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>
Diffstat (limited to 'net/ipv4/metrics.c')
| -rw-r--r-- | net/ipv4/metrics.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/net/ipv4/metrics.c b/net/ipv4/metrics.c index 04311f7067e2..6d218f5a2e71 100644 --- a/net/ipv4/metrics.c +++ b/net/ipv4/metrics.c @@ -5,8 +5,8 @@ #include <net/net_namespace.h> #include <net/tcp.h> -int ip_metrics_convert(struct net *net, struct nlattr *fc_mx, int fc_mx_len, - u32 *metrics) +static int ip_metrics_convert(struct net *net, struct nlattr *fc_mx, + int fc_mx_len, u32 *metrics) { bool ecn_ca = false; struct nlattr *nla; @@ -52,4 +52,28 @@ int ip_metrics_convert(struct net *net, struct nlattr *fc_mx, int fc_mx_len, return 0; } -EXPORT_SYMBOL_GPL(ip_metrics_convert); + +struct dst_metrics *ip_fib_metrics_init(struct net *net, struct nlattr *fc_mx, + int fc_mx_len) +{ + struct dst_metrics *fib_metrics; + int err; + + if (!fc_mx) + return (struct dst_metrics *)&dst_default_metrics; + + fib_metrics = kzalloc(sizeof(*fib_metrics), GFP_KERNEL); + if (unlikely(!fib_metrics)) + return ERR_PTR(-ENOMEM); + + err = ip_metrics_convert(net, fc_mx, fc_mx_len, fib_metrics->metrics); + if (!err) { + refcount_set(&fib_metrics->refcnt, 1); + } else { + kfree(fib_metrics); + fib_metrics = ERR_PTR(err); + } + + return fib_metrics; +} +EXPORT_SYMBOL_GPL(ip_fib_metrics_init); |