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libnetlink: reduce size of message sent to kernel 

Fixes commit 246f57c4086d99fa ("ip link: Add support for kernel
side filtering").

This patch reduce the size of message sent to kernel space. Before this
patch, for command: 'ip link show', we will sent 1056 bytes. With this
patch, we only need to send 40 bytes.

Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
This commit is contained in:
Zhang Shengju 2016-11-19 23:50:13 +08:00 committed by Stephen Hemminger
parent 2d98dd4821
commit 1b109a30bf
1 changed files with 1 additions and 1 deletions
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2
lib/libnetlink.c
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@ -149,7 +149,7 @@ int rtnl_wilddump_req_filter_fn(struct rtnl_handle *rth, int family, int type,
if (err) if (err)
return err; return err;
return send(rth->fd, (void*)&req, sizeof(req), 0); return send(rth->fd, &req, req.nlh.nlmsg_len, 0);
} }
int rtnl_wilddump_stats_req_filter(struct rtnl_handle *rth, int fam, int type, int rtnl_wilddump_stats_req_filter(struct rtnl_handle *rth, int fam, int type,