* Shall we add some note info for tcp_min_snd_mss?
@ 2019-07-03 8:35 ZhangXiao
2019-07-03 9:34 ` Eric Dumazet
0 siblings, 1 reply; 2+ messages in thread
From: ZhangXiao @ 2019-07-03 8:35 UTC (permalink / raw)
To: edumazet, davem; +Cc: netdev
Hi David & Eric,
Commit 5f3e2bf0 (tcp: add tcp_min_snd_mss sysctl) add a new interface to
adjust network. While if this variable been set too large, for example
larger then (MTU - 40), the net link maybe damaged. So, how about adding
some warning messages for the operator/administrator? In document, or in
source code.
Thanks
Xiao
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Shall we add some note info for tcp_min_snd_mss?
2019-07-03 8:35 Shall we add some note info for tcp_min_snd_mss? ZhangXiao
@ 2019-07-03 9:34 ` Eric Dumazet
0 siblings, 0 replies; 2+ messages in thread
From: Eric Dumazet @ 2019-07-03 9:34 UTC (permalink / raw)
To: ZhangXiao, edumazet, davem; +Cc: netdev
On 7/3/19 1:35 AM, ZhangXiao wrote:
> Hi David & Eric,
>
> Commit 5f3e2bf0 (tcp: add tcp_min_snd_mss sysctl) add a new interface to
> adjust network. While if this variable been set too large, for example
> larger then (MTU - 40), the net link maybe damaged. So, how about adding
> some warning messages for the operator/administrator? In document, or in
> source code.
What kind of warning message do you
envision exactly ?
The sysctl is global, devices MTU can be quite arbitrary.
Like almost all sysctls, sysadmins are supposed to know what they are doing.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-07-03 8:35 Shall we add some note info for tcp_min_snd_mss? ZhangXiao
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