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Message-ID: <655ba4a1-4f73-4ef4-aff3-0b439e65a9c9@kernel.org>
Date: Tue, 27 Feb 2024 08:06:35 -0700
From: David Ahern <dsahern@...nel.org>
To: Lena Wang (王娜) <Lena.Wang@...iatek.com>,
"davem@...emloft.net" <davem@...emloft.net>,
"kuba@...nel.org" <kuba@...nel.org>, "pabeni@...hat.com"
<pabeni@...hat.com>, "edumazet@...gle.com" <edumazet@...gle.com>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Shiming Cheng (成诗明) <Shiming.Cheng@...iatek.com>
Subject: Re: [PATCH] Net:cache didn't flush when ipv6 rule changed
On 2/26/24 6:11 AM, Lena Wang (王娜) wrote:
> diff --git a/net/ipv6/fib6_rules.c b/net/ipv6/fib6_rules.c
> index 7523c4baef35..bec2cf4436e1 100644
> --- a/net/ipv6/fib6_rules.c
> +++ b/net/ipv6/fib6_rules.c
> @@ -449,6 +449,15 @@ static size_t fib6_rule_nlmsg_payload(struct
> fib_rule *rule)
> + nla_total_size(16); /* src */
> }
>
> +static void fib6_rule_flush_cache(struct fib_rules_ops *ops)
> +{
> + struct net *net = ops->fro_net;
> + if (!net)
> + return;
> + rt_genid_bump_ipv6(net);
> + return;
> +}
This can be written as a 1-liner - the same way as the IPv4 flush cache:
static void fib6_rule_flush_cache(struct fib_rules_ops *ops)
{
rt_genid_bump_ipv6(ops->fro_net);
}
> +
> static const struct fib_rules_ops __net_initconst
> fib6_rules_ops_template = {
> .family = AF_INET6,
> .rule_size = sizeof(struct fib6_rule),
> @@ -461,6 +470,7 @@ static const struct fib_rules_ops __net_initconst
> fib6_rules_ops_template = {
> .compare = fib6_rule_compare,
> .fill = fib6_rule_fill,
> .nlmsg_payload = fib6_rule_nlmsg_payload,
> + .flush_cache = fib6_rule_flush_cache,
this should be tabs and the columns should align with existing code.
> .nlgroup = RTNLGRP_IPV6_RULE,
> .owner = THIS_MODULE,
> .fro_net = &init_net,
> --
> 2.18.0
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