netdev - [PATCH net-next] raw: fix a typo in raw_icmp

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Date:   Thu, 23 Jun 2022 19:35:40 +0000
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com,
        Eric Dumazet <edumazet@...gle.com>,
        John Sperbeck <jsperbeck@...gle.com>
Subject: [PATCH net-next] raw: fix a typo in raw_icmp_error()

I accidentally broke IPv4 traceroute, by swaping iph->saddr and iph->daddr.

Probably because raw_icmp_error() and raw_v4_input()
use different order for iph->saddr and iph->daddr.

Fixes: ba44f8182ec2 ("raw: use more conventional iterators")
Reported-by: John Sperbeck<jsperbeck@...gle.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/ipv4/raw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 027389969915e456b0009e2a0b4ad81afb836e9d..006c1f0ed8b4731a8c64de282409e4bb03a6c1a6 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -278,7 +278,7 @@ void raw_icmp_error(struct sk_buff *skb, int protocol, u32 info)
 	sk_nulls_for_each(sk, hnode, hlist) {
 		iph = (const struct iphdr *)skb->data;
 		if (!raw_v4_match(net, sk, iph->protocol,
-				  iph->saddr, iph->daddr, dif, sdif))
+				  iph->daddr, iph->saddr, dif, sdif))
 			continue;
 		raw_err(sk, skb, info);
 	}
-- 
2.37.0.rc0.104.g0611611a94-goog