linux/drivers/net/ethernet/intel/i40evf
Alexander Duyck c49a7bc330 i40e/i40evf: Factor out L4 header and checksum from L3 bits in TSO path
This patch makes it so that the L4 header offsets and such can be ignored
when dealing with the L3 checksum and length update.  This is done making
use of two things.

First we can just use the offset from the L4 header to the start of the
packet to determine the L4 offset, and from that we can then make use of
the data offset to determine the full length of the headers.

As far as adjusting the checksum to remove the length we can simply add the
inverse of the length instead of having to recompute the entire
pseudo-header without the length.  In the case of an IPv6 header this
should be significantly cheaper since we can make use of a value we already
needed instead of having to read the source and destination address out of
the packet.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2016-02-18 10:34:05 -08:00
..
i40e_adminq_cmd.h i40e: When in promisc mode apply promisc mode to Tx Traffic as well 2016-02-17 23:45:18 -08:00
i40e_adminq.c i40e: clean event descriptor before use 2016-02-17 23:39:58 -08:00
i40e_adminq.h i40e/i40evf: fix a potential type compare issue 2015-10-07 13:38:11 -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: remove forever unused ID 2016-01-08 01:33:42 -08:00
i40e_devids.h i40e: remove forever unused ID 2016-01-08 01:33:42 -08:00
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/i40evf: Add a workaround to drop all flow control frames 2015-10-23 04:17:55 -07:00
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/i40evf: Factor out L4 header and checksum from L3 bits in TSO path 2016-02-18 10:34:05 -08:00
i40e_txrx.h i40e/i40evf: Drop outer checksum offload that was not requested 2016-02-18 10:27:45 -08:00
i40e_type.h i40e/i40evf: Fix an accidental error with BIT_ULL replacement 2015-10-19 15:35:45 -07:00
i40e_virtchnl.h i40e/i40evf: Add a new offload for RSS PCTYPE V2 for X722 2015-12-12 21:08:42 -08:00
i40evf_ethtool.c i40evf: support packet split receive 2016-02-17 22:22:58 -08:00
i40evf_main.c i40e/i40evf: Bump i40e to 1.4.15 and i40evf to 1.4.11. 2016-02-17 23:50:43 -08:00
i40evf_virtchnl.c i40evf: support packet split receive 2016-02-17 22:22:58 -08:00
i40evf.h i40evf: support packet split receive 2016-02-17 22:22:58 -08:00
Makefile i40evf: Fix the headers and update copyright year. 2014-05-21 01:54:43 -07:00