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linux-stable/drivers/net/ethernet/intel/igc
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Tan Tee Min 25102893e4 igc: Include the length/type field and VLAN tag in queueMaxSDU 
IEEE 802.1Q does not have clear definitions of what constitutes an
SDU (Service Data Unit), but IEEE Std 802.3 clause 3.1.2 does define
the MAC service primitives and clause 3.2.7 does define the MAC Client
Data for Q-tagged frames.

It shows that the mac_service_data_unit (MSDU) does NOT contain the
preamble, destination and source address, or FCS. The MSDU does contain
the length/type field, MAC client data, VLAN tag and any padding
data (prior to the FCS).

Thus, the maximum 802.3 frame size that is allowed to be transmitted
should be QueueMaxSDU (MSDU) + 16 (6 byte SA + 6 byte DA + 4 byte FCS).

Fixes: 92a0dcb842 ("igc: offload queue max SDU from tc-taprio")
Signed-off-by: Tan Tee Min <tee.min.tan@linux.intel.com>
Reviewed-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-07-05 11:18:56 -07:00
..
igc.h igc: Fix TX Hang issue when QBV Gate is closed 2023-07-05 10:39:48 -07:00
igc_base.c igc: remove I226 Qbv BaseTime restriction 2023-01-03 09:35:37 -08:00
igc_base.h igc: read before write to SRRCTL register 2023-05-03 09:19:11 +01:00
igc_defines.h igc: Remove obsolete DMA coalescing code 2023-03-21 11:37:16 -07:00
igc_diag.c
igc_diag.h
igc_dump.c
igc_ethtool.c igc: set TP bit in 'supported' and 'advertising' fields of ethtool_link_ksettings 2023-07-05 11:18:43 -07:00
igc_hw.h igc: offload queue max SDU from tc-taprio 2023-03-07 13:45:56 -08:00
igc_i225.c igc: Remove obsolete DMA coalescing code 2023-03-21 11:37:16 -07:00
igc_i225.h
igc_mac.c intel/igc:fix repeated words in comments 2022-06-30 11:06:23 -07:00
igc_mac.h
igc_main.c igc: Include the length/type field and VLAN tag in queueMaxSDU 2023-07-05 11:18:56 -07:00
igc_nvm.c
igc_nvm.h
igc_phy.c igc: Change type of the 'igc_check_downshift' method 2022-05-10 14:02:53 -07:00
igc_phy.h igc: Change type of the 'igc_check_downshift' method 2022-05-10 14:02:53 -07:00
igc_ptp.c igc: Work around HW bug causing missing timestamps 2023-06-22 08:22:35 -07:00
igc_regs.h igc: Remove obsolete DMA coalescing code 2023-03-21 11:37:16 -07:00
igc_tsn.c igc: Fix TX Hang issue when QBV Gate is closed 2023-07-05 10:39:48 -07:00
igc_tsn.h igc: Remove reset adapter task for i226 during disable tsn config 2023-01-03 09:36:25 -08:00
igc_xdp.c drivers: net: turn on XDP features 2023-02-02 20:48:23 -08:00
igc_xdp.h
Makefile