From: Casper Andersson casper.casan@gmail.com
[ Upstream commit 7498a457ecf7ff2c4d379360aa8f24566bb1543e ]
Packets that are not of length divisible by 4 (e.g. 77, 78, 79) would have the checksum included up to next multiple of 4 (a 77 bytes packet would have 3 bytes of ethernet checksum included). The check for the value expects it in host (Little) endian.
Fixes: f3cad2611a77 ("net: sparx5: add hostmode with phylink support") Signed-off-by: Casper Andersson casper.casan@gmail.com Reviewed-by: Steen Hegelund Steen.Hegelund@microchip.com Link: https://lore.kernel.org/r/20220825084955.684637-1-casper.casan@gmail.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/microchip/sparx5/sparx5_packet.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c b/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c index 148d431fcde42..c460168131c26 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c @@ -107,6 +107,8 @@ static void sparx5_xtr_grp(struct sparx5 *sparx5, u8 grp, bool byte_swap) /* This assumes STATUS_WORD_POS == 1, Status * just after last data */ + if (!byte_swap) + val = ntohl((__force __be32)val); byte_cnt -= (4 - XTR_VALID_BYTES(val)); eof_flag = true; break;