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| author |   Alexander Duyck <aduyck@mirantis.com> | 2016-04-05 09:13:39 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-04-07 16:56:33 -0400 |
| commit | a0ca153f98db8cf25298565a09e11fe9d82846ad (patch) | |
| tree | 5f7773cd6e2dbf30f3af97194a8b7d04b99fd1a0 /virt | |
| parent | net: add the AF_KCM entries to family name tables (diff) | |
| download | linux-dev-a0ca153f98db8cf25298565a09e11fe9d82846ad.tar.xz linux-dev-a0ca153f98db8cf25298565a09e11fe9d82846ad.zip | |
GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU
This patch fixes an issue I found in which we were dropping frames if we
had enabled checksums on GRE headers that were encapsulated by either FOU
or GUE. Without this patch I was barely able to get 1 Gb/s of throughput.
With this patch applied I am now at least getting around 6 Gb/s.
The issue is due to the fact that with FOU or GUE applied we do not provide
a transport offset pointing to the GRE header, nor do we offload it in
software as the GRE header is completely skipped by GSO and treated like a
VXLAN or GENEVE type header. As such we need to prevent the stack from
generating it and also prevent GRE from generating it via any interface we
create.
Fixes: c3483384ee511 ("gro: Allow tunnel stacking in the case of FOU/GUE")
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions