Cross Reference: /src/sys/arch/xen/include/xennet

History log of /src/sys/arch/xen/include/xennet_checksum.h
Revision	Date	Author	Comments
1.5	01-May-2020	jdolecek	make the csum blank/undefer counters per interface
1.4	22-Mar-2020	jdolecek	actually in data_validated case, there is no need to inspect the data for Rx, simply set the supported csum offload flags to skip the software csum verification
1.3	18-Mar-2020	jdolecek	use NET[RT]XF_data_validated flag to mark when Tx packet has valid checksum; this is used to skip software checksum validation on xennet Rx side when configured for Rx offloading in Dom0 assume that checksum is valid when the Tx mbuf has no offload flags - in that case either it's local packet where checksum has just been computed in software, or forwarded external packet already verified when received on Dom0 practical offshot of this is that DomU doesn't re-verify checksum of packets forwarded from external hosts, e.g. via bridge(4)
1.2	16-Mar-2020	jdolecek	drop the disabled M_EXT_ROMAP mbuf code, convert xennet_checksum_fill() to use in_undefer_cksum() instead of custom code to compute the checksum for Rx packets, and set csum_data appropriately for eventual hw offloading make it possible to skip the sw checksum computation by appropriate Rx flag similarily as we do for Tx XXX for now, the Rx flag is mostly for testing as it only works for dom0<->domu, need some further network stack changes to arrange for the checksum to be eventually computed when packets goes outside xen
1.1	12-Jul-2006	yamt	branches: 1.1.2; 1.1.6; 1.1.10; 1.1.16; 1.1.158; implement a simple NETTXF_csum_blank/NETRXF_csum_blank workaround so that we can talk with linux guests at least. just fill checksum field of received packets if the flag is set. maybe should be revisited later.
1.1.158.1	08-Apr-2020	martin	Merge changes from current as of 20200406
1.1.16.2	30-Dec-2006	yamt	sync with head.
1.1.16.1	12-Jul-2006	yamt	file xennet_checksum.h was added on branch yamt-lazymbuf on 2006-12-30 20:47:25 +0000
1.1.10.2	09-Sep-2006	rpaulo	sync with head
1.1.10.1	12-Jul-2006	rpaulo	file xennet_checksum.h was added on branch rpaulo-netinet-merge-pcb on 2006-09-09 02:44:56 +0000
1.1.6.2	11-Aug-2006	yamt	sync with head
1.1.6.1	12-Jul-2006	yamt	file xennet_checksum.h was added on branch yamt-pdpolicy on 2006-08-11 15:43:16 +0000
1.1.2.2	13-Jul-2006	gdamore	Merge from HEAD.
1.1.2.1	12-Jul-2006	gdamore	file xennet_checksum.h was added on branch gdamore-uart on 2006-07-13 17:49:06 +0000

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