linux-kernel - [PATCH 7/8] net: qualcomm: rmnet: mark endianness of struct rmnet_map_dl_csum

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Date:   Mon, 20 May 2019 08:53:53 -0500
From:   Alex Elder <elder@...aro.org>
To:     arnd@...db.de, subashab@...eaurora.org, david.brown@...aro.org,
        agross@...nel.org, davem@...emloft.net
Cc:     bjorn.andersson@...aro.org, ilias.apalodimas@...aro.org,
        cpratapa@...eaurora.org, syadagir@...eaurora.org,
        evgreen@...omium.org, benchan@...gle.com, ejcaruso@...gle.com,
        netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] net: qualcomm: rmnet: mark endianness of struct rmnet_map_dl_csum_trailer fields

Two 16-bit fields (csum_start_offset and csum_length) in the
rmnet_map_dl_csum_trailer structure are currently defined to have
type u16.  But they are in fact big endian values, so should be
properly represented as __be16 values.

No existing code actually references these fields (they're ignored by
rmnet_map_ipv4_dl_csum_trailer() and rmnet_map_ipv6_dl_csum_trailer()).
Changing their type therefore causes no harm, so just fix them.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
index fb1cdb4ec41f..775b98d34e94 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
@@ -52,8 +52,8 @@ struct rmnet_map_header {
 struct rmnet_map_dl_csum_trailer {
 	u8  reserved1;
 	u8  flags;		/* RMNET_MAP_DL_* */
-	u16 csum_start_offset;
-	u16 csum_length;
+	__be16 csum_start_offset;
+	__be16 csum_length;
 	__be16 csum_value;
 } __aligned(1);
 
-- 
2.20.1