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| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2015-09-11 23:48:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-09-16 01:25:02 +0300 |
| commit | d5566fd72ec1924958fcfd48b65c022c8f7eae64 (patch) | |
| tree | fb7c5e29238657e89d33320091d8b8ae3d5f78e9 /net/core | |
| parent | ad1e7b97b3adb91d46f3adb70a7867a50fc274cf (diff) | |
| download | linux-d5566fd72ec1924958fcfd48b65c022c8f7eae64.tar.xz | |
rtnetlink: RTEXT_FILTER_SKIP_STATS support to avoid dumping inet/inet6 stats
Many commonly used functions like getifaddrs() invoke RTM_GETLINK
to dump the interface information, and do not need the
the AF_INET6 statististics that are always returned by default
from rtnl_fill_ifinfo().
Computing the statistics can be an expensive operation that impacts
scaling, so it is desirable to avoid this if the information is
not needed.
This patch adds a the RTEXT_FILTER_SKIP_STATS extended info flag that
can be passed with netlink_request() to avoid statistics computation
for the ifinfo path.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/rtnetlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index a466821d1441..e5452296ec2f 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1272,7 +1272,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, if (!(af = nla_nest_start(skb, af_ops->family))) goto nla_put_failure; - err = af_ops->fill_link_af(skb, dev); + err = af_ops->fill_link_af(skb, dev, ext_filter_mask); /* * Caller may return ENODATA to indicate that there |