netdev - Re: [PATCH] tcp: Add listening address to SYN flood message

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Message-ID: <20221110153901.7daa86e1@hermes.local>
Date:   Thu, 10 Nov 2022 15:39:01 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Jamie Bainbridge <jamie.bainbridge@...il.com>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tcp: Add listening address to SYN flood message

On Thu, 10 Nov 2022 21:21:06 +1100
Jamie Bainbridge <jamie.bainbridge@...il.com> wrote:

> +	    xchg(&queue->synflood_warned, 1) == 0) {
> +#if IS_ENABLED(CONFIG_IPV6)
> +		if (sk->sk_family == AF_INET6) {
> +			net_info_ratelimited("%s: Possible SYN flooding on port %d. IP %pI6c. %s.  Check SNMP counters.\n",
> +					proto, sk->sk_num,
> +					&sk->sk_v6_rcv_saddr, msg);
> +		} else
> +#endif
> +		{
> +			net_info_ratelimited("%s: Possible SYN flooding on port %d. IP %pI4. %s.  Check SNMP counters.\n",
> +					proto, sk->sk_num, &sk->sk_rcv_saddr, msg);
> +		}
> +	}
>  

Port number is unsigned not signed.
Message also seems overly wordy to me.