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SubjectRe: NETIF_F_(SG|FRAGLIST|HIGHDMA) docs anywhere?
Date
> my major problem is test cases and getting the picture behind these
> structures.

Check skb_copy_and_csum_dev, used by the 8139too and via-rhine
network drivers: that's a software-only implementation of the NETIF_F_
flags.

Note that the kernel never uses scatter-gather without hardware
checksumming: concurrent sendfile()+write() would create packets
with invalid checksums.

--
Manfred


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