* [iproute2] libnetlink: reduce size of message sent to kernel
@ 2016-11-19 15:50 Zhang Shengju
2016-11-29 21:07 ` Stephen Hemminger
0 siblings, 1 reply; 2+ messages in thread
From: Zhang Shengju @ 2016-11-19 15:50 UTC (permalink / raw)
To: netdev
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>
---
lib/libnetlink.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index 2279935..d0e19cc 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -149,7 +149,7 @@ int rtnl_wilddump_req_filter_fn(struct rtnl_handle *rth, int family, int type,
if (err)
return err;
- return send(rth->fd, (void*)&req, sizeof(req), 0);
+ return send(rth->fd, (void*)&req, req.nlh.nlmsg_len, 0);
}
int rtnl_wilddump_stats_req_filter(struct rtnl_handle *rth, int fam, int type,
--
1.8.3.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [iproute2] libnetlink: reduce size of message sent to kernel
2016-11-19 15:50 [iproute2] libnetlink: reduce size of message sent to kernel Zhang Shengju
@ 2016-11-29 21:07 ` Stephen Hemminger
0 siblings, 0 replies; 2+ messages in thread
From: Stephen Hemminger @ 2016-11-29 21:07 UTC (permalink / raw)
To: Zhang Shengju; +Cc: netdev
On Sat, 19 Nov 2016 23:50:13 +0800
Zhang Shengju <zhangshengju@cmss.chinamobile.com> wrote:
> 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>
Applied, and queued for next push.
Added a Fixes tag since this was introduced by changes to do selective query.
^ permalink raw reply [flat|nested] 2+ messages in thread
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