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| author |   Eric Dumazet <edumazet@google.com> | 2016-05-31 15:22:41 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-06-01 17:41:36 -0700 |
| commit | 595d0b29463343c3be995d3948930b8231e5b8cd (patch) | |
| tree | 5b9776e46e62588b659a61e9bbdd20614705a0fb /drivers/net/macvlan.c | |
| parent | ravb: Add SET_RUNTIME_PM_OPS macro (diff) | |
| download | linux-dev-595d0b29463343c3be995d3948930b8231e5b8cd.tar.xz linux-dev-595d0b29463343c3be995d3948930b8231e5b8cd.zip | |
udp: avoid csum_partial() for validated skb
In commit e6afc8ace6dd5 ("udp: remove headers from UDP packets before
queueing"), udp_csum_pull_header() helper was added but missed fact
that CHECKSUM_UNNECESSARY packets were now converted to CHECKSUM_NONE
and skb->csum_valid was set to 1 for them.
Since csum_partial() is quite expensive, even for 8-byte area, it is
worth adding a test.
We also can use skb->data instead of udp_hdr() as we are pulling
UDP headers, as it is sightly faster.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/macvlan.c')
0 files changed, 0 insertions, 0 deletions