From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 181EE3EBF24 for ; Fri, 29 May 2026 14:47:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780066038; cv=none; b=bNmUwe2rCJOSFF1zaongL3K1sDwKcPUf9tYB4wfDrKaflronlrP5gq4sJVdw4oxK0sfKB/l/vf7PV+/TrRvpAG9qcI/0Xg+i2PXVloOVrnlIZspujX4XBkBz6yHdtb6BZRhJ2bKOwww4IBeWZeanNaLcd+/oyWeW0/Iiyq+7xJ0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780066038; c=relaxed/simple; bh=ltwZovjUZ2vcGmHBKuZt8cbOq/0lKBsTreqFmZ4Nzx4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=tNZOtqtlnM5g+e3txmuG93oB3fCI4Nz6wKNmJmunKYR0ZSK1bb02UcQVyukGQh9DQp7D0b8pj8IIjYbmqVY6DPTq1H6fimbUCpmT/gLCZE9rL8QD7WAXZT+VPS/+3/5839uqBUizQtMjRFPKp/s0n0j6WgDgw/TLgzj/4wPQ9v0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SNaDX/qM; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SNaDX/qM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0882E1F00893; Fri, 29 May 2026 14:47:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780066036; bh=UvIw1sN5KwmjfI9LyMdRK1j0pBF09VG7im6Gd0W3NWE=; h=From:To:Cc:Subject:Date; b=SNaDX/qM1h9fRG9xqHzMWAt3mYxSb8AObBDWuZzhahIzoRjROzcFUdOTwBZ03JF4w H5UinznNP6BwQsZ2HpW4fUKskfxcvC2qn6HU3gZleoYoe5NxdwAg3ef6A4bQ0UzRj3 8PLZyY43ZXwBCYUk7Tf61SxDln+vZcS5BmIn4UUXRVTM6i/w1jJ3GI1yHCizncUcsp 5G6g3nkbWC4IpRv6x4veIhw2Xaz/g+y9jUqBq96bhzlMY1OxvgGSwXirDrwDLNKozW VVNZBYpwesI1do34fWyxWcZ5z3g0jynMrogYULorw3HzTXCtZeV/k3Dr0/ZPadnDKE 7Pardk0e/kCfg== From: Antoine Tenart To: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, andrew+netdev@lunn.ch Cc: Antoine Tenart , netdev@vger.kernel.org, Sashiko Subject: [PATCH net] geneve: fix length used in GRO hint UDP checksum adjustment Date: Fri, 29 May 2026 16:47:00 +0200 Message-ID: <20260529144713.780938-1-atenart@kernel.org> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In geneve_post_decap_hint the length used for adjusting the UDP checksum should be 'skb->len - gro_hint->nested_tp_offset' (UDP length) instead of 'skb->len - gro_hint->nested_nh_offset' (IP length). Fixes: fd0dd796576e ("geneve: use GRO hint option in the RX path") Cc: Paolo Abeni Reported-by: Sashiko Closes: https://sashiko.dev/#/patchset/20260521131436.748832-1-jhs%40mojatatu.com Signed-off-by: Antoine Tenart --- drivers/net/geneve.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index c6563367d382..715180c3a1b3 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -632,7 +632,7 @@ static int geneve_post_decap_hint(const struct sock *sk, struct sk_buff *skb, uh = udp_hdr(skb); uh->len = htons(skb->len - gro_hint->nested_tp_offset); if (uh->check) { - len = skb->len - gro_hint->nested_nh_offset; + len = skb->len - gro_hint->nested_tp_offset; skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL_CSUM; if (gro_hint->nested_is_v6) uh->check = ~udp_v6_check(len, &ipv6h->saddr, -- 2.54.0