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author | David S. Miller <davem@davemloft.net> | 2017-12-27 22:44:14 +0100 |
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committer | David S. Miller <davem@davemloft.net> | 2017-12-27 22:44:14 +0100 |
commit | 55b07a65e15bea6e253a907dacaf89b61fe504ca (patch) | |
tree | 9acc15d07f24c796c13c6d8999de8c206827aa49 /include/trace | |
parent | Merge branch 'rds-bug-fixes' (diff) | |
parent | tcp: do not allocate linear memory for zerocopy skbs (diff) | |
download | linux-55b07a65e15bea6e253a907dacaf89b61fe504ca.tar.xz linux-55b07a65e15bea6e253a907dacaf89b61fe504ca.zip |
Merge branch 'net-zerocopy-refine'
Willem de Bruijn says:
====================
zerocopy refinements
1/4 is a small optimization follow-up to the earlier fix to skb_segment:
check skb state once per skb, instead of once per frag.
2/4 makes behavior more consistent between standard and zerocopy send:
set the PSH bit when hitting MAX_SKB_FRAGS. This helps GRO.
3/4 resolves a surprising inconsistency in notification:
because small packets were not stored in frags, they would not set
the copied error code over loopback. This change also optimizes
the path by removing copying and making tso_fragment cheaper.
4/4 follows-up to 3/4 by no longer allocated now unused memory.
this was actually already in RFC patches, but dropped as I pared
down the patch set during revisions.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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