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| author | Tom Herbert <therbert@google.com> | 2014-09-01 00:12:42 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-02 06:36:27 +0200 |
| commit | d96535a17dbbafd567961d14c08c0984ddda9c3c (patch) | |
| tree | aa07db9a2ef6ea095f7b38ec3be18c92d4f55506 /net/ipv4/udp.c | |
| parent | net: Support for csum_bad in skbuff (diff) | |
| download | linux-d96535a17dbbafd567961d14c08c0984ddda9c3c.tar.xz linux-d96535a17dbbafd567961d14c08c0984ddda9c3c.zip | |
net: Infrastructure for checksum unnecessary conversions
For normal path, added skb_checksum_try_convert which is called
to attempt to convert CHECKSUM_UNNECESSARY to CHECKSUM_COMPLETE. The
primary condition to allow this is that ip_summed is CHECKSUM_NONE
and csum_valid is true, which will be the state after consuming
a CHECKSUM_UNNECESSARY.
For GRO path, added skb_gro_checksum_try_convert which is the GRO
analogue of skb_checksum_try_convert. The primary condition to allow
this is that NAPI_GRO_CB(skb)->csum_cnt == 0 and
NAPI_GRO_CB(skb)->csum_valid is set. This implies that we have consumed
all available CHECKSUM_UNNECESSARY checksums in the GRO path.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
0 files changed, 0 insertions, 0 deletions