linux/drivers/net/ethernet/intel/i40evf
Alexander Duyck 99dad8b34c i40e: Drop redundant Rx descriptor processing code
This patch cleans up several pieces of redundant code in the Rx clean-up
paths.

The first bit is that hdr_addr and the status_err_len portions of the Rx
descriptor represent the same value.  As such there is no point in setting
them to 0 before setting them to 0.  I'm dropping the second spot where we
are updating the value to 0 so that we only have 1 write for this value
instead of 2.

The second piece is the checking for the DD bit in the packet.  We only
need to check for a non-zero value for the status_err_len because if the
device is done with the descriptor it will have written something back and
the DD is just one piece of it.  In addition I have moved the reading of
the Rx descriptor bits related to rx_ptype down so that they are actually
below the dma_rmb() call so that we are guaranteed that we don't have any
funky 64b on 32b calls causing any ordering issues.

Change-ID: I256e44a025d3c64a7224aaaec37c852bfcb1871b
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-10-28 23:28:39 -07:00
..
i40e_adminq_cmd.h i40e: Add support for HMC resource and profile for X722 2016-08-19 21:26:58 -07:00
i40e_adminq.c i40e: clean event descriptor before use 2016-02-17 23:39:58 -08:00
i40e_adminq.h i40e: Move NVM variable out of AQ struct 2016-04-06 18:45:11 -07:00
i40e_alloc.h i40evf: Fix the headers and update copyright year. 2014-05-21 01:54:43 -07:00
i40e_common.c i40e: avoid potential null pointer dereference when assigning len 2016-09-22 22:33:40 -07:00
i40e_devids.h i40e: Remove device ID 0x37D4 2016-07-22 00:07:04 -07:00
i40e_hmc.h i40e: use BIT and BIT_ULL macros 2015-07-23 05:33:55 -07:00
i40e_lan_hmc.h i40e/i40evf: Big endian fixes for handling HMC 2014-06-26 04:44:57 -07:00
i40e_osdep.h move io-64-nonatomic*.h out of asm-generic 2015-10-15 00:21:07 +02:00
i40e_prototype.h i40e: implement and use Rx CTL helper functions 2016-02-18 23:59:15 -08:00
i40e_register.h i40evf: Remove PF specific register definitions from the VF 2015-08-26 15:05:17 -07:00
i40e_status.h i40evf: Fix the headers and update copyright year. 2014-05-21 01:54:43 -07:00
i40e_txrx.c i40e: Drop redundant Rx descriptor processing code 2016-10-28 23:28:39 -07:00
i40e_txrx.h i40evf: support queue-specific settings for interrupt moderation 2016-09-24 22:50:23 -07:00
i40e_type.h i40e/i40evf: fix I40E_MASK signed shift overflow warnings 2016-05-01 17:05:08 -07:00
i40e_virtchnl.h i40e: group base mode VF offload flags 2016-10-28 23:28:39 -07:00
i40evf_ethtool.c i40evf: support queue-specific settings for interrupt moderation 2016-09-24 22:50:23 -07:00
i40evf_main.c i40e/i40evf: Changed version from 1.6.16 to 1.6.19 2016-10-28 23:28:39 -07:00
i40evf_virtchnl.c i40evf: Fix link state event handling 2016-09-22 22:33:40 -07:00
i40evf.h i40e/i40evf: fix interrupt affinity bug 2016-10-28 23:28:39 -07:00
Makefile i40evf: Fix the headers and update copyright year. 2014-05-21 01:54:43 -07:00