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From: Jacek Kalwas <jacek.kalwas@intel.com>
To: davem@davemloft.net
Cc: Jacek Kalwas <jacek.kalwas@intel.com>,
	netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org
Subject: [net] udp: enable UDP checksum offload for ESP
Date: Thu, 12 Apr 2018 12:03:13 -0700	[thread overview]
Message-ID: <20180412190315.3102-1-jacek.kalwas@intel.com> (raw)

In case NIC has support for ESP TX CSUM offload skb->ip_summed is not
set to CHECKSUM_PARTIAL which results in checksum calculated by SW.

Fix enables ESP TX CSUM for UDP by extending condition with check for
NETIF_F_HW_ESP_TX_CSUM.

Signed-off-by: Jacek Kalwas <jacek.kalwas@intel.com>
---
 net/ipv4/ip_output.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 4c11b810a447..a2dfb5a9ba76 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -907,7 +907,7 @@ static int __ip_append_data(struct sock *sk,
 	    length + fragheaderlen <= mtu &&
 	    rt->dst.dev->features & (NETIF_F_HW_CSUM | NETIF_F_IP_CSUM) &&
 	    !(flags & MSG_MORE) &&
-	    !exthdrlen)
+	    (!exthdrlen || (rt->dst.dev->features & NETIF_F_HW_ESP_TX_CSUM)))
 		csummode = CHECKSUM_PARTIAL;
 
 	cork->length += length;
-- 
2.14.3

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             reply	other threads:[~2018-04-12 19:02 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-12 19:03 Jacek Kalwas [this message]
2018-04-12 19:03 ` [net] xfrm: allow to release xfrm_state with flush Jacek Kalwas
2018-04-19  6:56   ` Steffen Klassert
2018-04-12 19:03 ` [net] xfrm: cover crypto status in xfrm_input Jacek Kalwas
2018-04-13 11:09   ` Steffen Klassert
2018-04-19  6:54 ` [net] udp: enable UDP checksum offload for ESP Steffen Klassert

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