ixgbe: fix ixgbe_orom_civd_info struct layout

The current layout of struct ixgbe_orom_civd_info causes incorrect data
storage due to compiler-inserted padding. This results in issues when
writing OROM data into the structure.

Add the __packed attribute to ensure the structure layout matches the
expected binary format without padding.

Fixes: 70db0788a262 ("ixgbe: read the OROM version information")
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
index d741164..bfeef5b 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
@@ -3125,7 +3125,7 @@ static int ixgbe_get_orom_ver_info(struct ixgbe_hw *hw,
        if (err)
                return err;
 
-       combo_ver = le32_to_cpu(civd.combo_ver);
+       combo_ver = get_unaligned_le32(&civd.combo_ver);
 
        orom->major = (u8)FIELD_GET(IXGBE_OROM_VER_MASK, combo_ver);
        orom->patch = (u8)FIELD_GET(IXGBE_OROM_VER_PATCH_MASK, combo_ver);

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
index d2f22d8..ff8d640 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
@@ -932,7 +932,7 @@ struct ixgbe_orom_civd_info {
        __le32 combo_ver;       /* Combo Image Version number */
        u8 combo_name_len;      /* Length of the unicode combo image version string, max of 32 */
        __le16 combo_name[32];  /* Unicode string representing the Combo Image version */
-};
+} __packed;
 
 /* Function specific capabilities */
 struct ixgbe_hw_func_caps {