udp: Add support for doing checksum unnecessary conversion

Browse source

Add support for doing CHECKSUM_UNNECESSARY to CHECKSUM_COMPLETE
conversion in UDP tunneling path.

In the normal UDP path, we call skb_checksum_try_convert after locating
the UDP socket. The check is that checksum conversion is enabled for
the socket (new flag in UDP socket) and that checksum field is
non-zero.

In the UDP GRO path, we call skb_gro_checksum_try_convert after
checksum is validated and checksum field is non-zero. Since this is
already in GRO we assume that checksum conversion is always wanted.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Tom Herbert 2014-08-31 15:12:43 -07:00 • committed by David S. Miller

parent d96535a17d

commit 2abb7cdc0d

5 changed files with 57 additions and 16 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

16

include/linux/udp.h

View file

4

net/ipv4/udp.c

View file

25

net/ipv4/udp_offload.c

View file

4

net/ipv6/udp.c

View file

26

net/ipv6/udp_offload.c

View file