| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 19/72] net: ag71xx: remove unnecessary MTU reservation | Date | Fri, 5 Mar 2021 13:21:21 +0100 |
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From: DENG Qingfang <dqfext@gmail.com>
commit 04b385f325080157ab1b5f8ce1b1de07ce0d9e27 upstream.
2 bytes of the MTU are reserved for Atheros DSA tag, but DSA core has already handled that since commit dc0fe7d47f9f. Remove the unnecessary reservation.
Fixes: d51b6ce441d3 ("net: ethernet: add ag71xx driver") Signed-off-by: DENG Qingfang <dqfext@gmail.com> Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> Link: https://lore.kernel.org/r/20210218034514.3421-1-dqfext@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ethernet/atheros/ag71xx.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/net/ethernet/atheros/ag71xx.c +++ b/drivers/net/ethernet/atheros/ag71xx.c @@ -222,8 +222,6 @@ #define AG71XX_REG_RX_SM 0x01b0 #define AG71XX_REG_TX_SM 0x01b4 -#define ETH_SWITCH_HEADER_LEN 2 - #define AG71XX_DEFAULT_MSG_ENABLE \ (NETIF_MSG_DRV \ | NETIF_MSG_PROBE \ @@ -784,7 +782,7 @@ static void ag71xx_hw_setup(struct ag71x static unsigned int ag71xx_max_frame_len(unsigned int mtu) { - return ETH_SWITCH_HEADER_LEN + ETH_HLEN + VLAN_HLEN + mtu + ETH_FCS_LEN; + return ETH_HLEN + VLAN_HLEN + mtu + ETH_FCS_LEN; } static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
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