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| author |   Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2015-09-11 16:48:48 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-09-15 15:25:02 -0700 |
| commit | d5566fd72ec1924958fcfd48b65c022c8f7eae64 (patch) | |
| tree | fb7c5e29238657e89d33320091d8b8ae3d5f78e9 /include/net/rtnetlink.h | |
| parent | cdc: Fix build warning. (diff) | |
| download | linux-dev-d5566fd72ec1924958fcfd48b65c022c8f7eae64.tar.xz linux-dev-d5566fd72ec1924958fcfd48b65c022c8f7eae64.zip | |
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 'include/net/rtnetlink.h')
| -rw-r--r-- | include/net/rtnetlink.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h index 18fdb98185ab..aff6ceb891a9 100644 --- a/include/net/rtnetlink.h +++ b/include/net/rtnetlink.h @@ -122,7 +122,8 @@ struct rtnl_af_ops { int family; int (*fill_link_af)(struct sk_buff *skb, - const struct net_device *dev); + const struct net_device *dev, + u32 ext_filter_mask); size_t (*get_link_af_size)(const struct net_device *dev); int (*validate_link_af)(const struct net_device *dev, |