netdev - Re: [PATCH V3] netfilter: netns nf_conntrack: per-netns net.netfilter.nf_conntrack

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Message-Id: <20250409091319.17856-1-xiafei_xupt@163.com>
Date: Wed,  9 Apr 2025 17:13:19 +0800
From: lvxiafei <xiafei_xupt@....com>
To: fw@...len.de
Cc: coreteam@...filter.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	horms@...nel.org,
	kadlec@...filter.org,
	kuba@...nel.org,
	linux-kernel@...r.kernel.org,
	lvxiafei@...setime.com,
	netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	pabeni@...hat.com,
	pablo@...filter.org,
	xiafei_xupt@....com
Subject: Re: [PATCH V3] netfilter: netns nf_conntrack: per-netns net.netfilter.nf_conntrack_max sysctl

Florian Westphal <fw@...len.de> wrote:
> Whats the function of nf_conntrack_max?
> After this change its always 0?

nf_conntrack_max is a global (ancestor) limit, by default
nf_conntrack_max = max_factor * nf_conntrack_htable_size.

init_net.ct.sysctl_max is a parameter for each netns, and
setting it will not affect the value of nf_conntrack_max.