target/linux/generic/backport-5.15/777-v6.2-02-net-dsa-tag_qca-fix-wrong-MGMT_DATA2-size.patch

   1 From d9dba91be71f03cc75bcf39fc0d5d99ff33f1ae0 Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Thu, 29 Dec 2022 17:33:33 +0100
   4 Subject: [PATCH 2/5] net: dsa: tag_qca: fix wrong MGMT_DATA2 size
   5
   6 It was discovered that MGMT_DATA2 can contain up to 28 bytes of data
   7 instead of the 12 bytes written in the Documentation by accounting the
   8 limit of 16 bytes declared in Documentation subtracting the first 4 byte
   9 in the packet header.
  10
  11 Update the define with the real world value.
  12
  13 Tested-by: Ronald Wahl <ronald.wahl@raritan.com>
  14 Fixes: c2ee8181fddb ("net: dsa: tag_qca: add define for handling mgmt Ethernet packet")
  15 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  16 Cc: stable@vger.kernel.org # v5.18+
  17 Signed-off-by: David S. Miller <davem@davemloft.net>
  18 ---
  19  include/linux/dsa/tag_qca.h | 4 ++--
  20  1 file changed, 2 insertions(+), 2 deletions(-)
  21
  22 --- a/include/linux/dsa/tag_qca.h
  23 +++ b/include/linux/dsa/tag_qca.h
  24 @@ -40,8 +40,8 @@
  25                                         QCA_HDR_MGMT_COMMAND_LEN + \
  26                                         QCA_HDR_MGMT_DATA1_LEN)
  27
  28 -#define QCA_HDR_MGMT_DATA2_LEN         12 /* Other 12 byte for the mdio data */
  29 -#define QCA_HDR_MGMT_PADDING_LEN       34 /* Padding to reach the min Ethernet packet */
  30 +#define QCA_HDR_MGMT_DATA2_LEN         28 /* Other 28 byte for the mdio data */
  31 +#define QCA_HDR_MGMT_PADDING_LEN       18 /* Padding to reach the min Ethernet packet */
  32
  33  #define QCA_HDR_MGMT_PKT_LEN           (QCA_HDR_MGMT_HEADER_LEN + \
  34                                         QCA_HDR_LEN + \