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authorJesse Gross <jesse@nicira.com>2014-12-24 07:37:26 +0100
committerDavid S. Miller <davem@davemloft.net>2014-12-26 23:20:56 +0100
commit5f35227ea34bb616c436d9da47fc325866c428f3 (patch)
treee6f997cb2f1f1bce1d2b5be613e1be667b9f927f /drivers/media/dvb-frontends/stv0900.h
parentnet: incorrect use of init_completion fixup (diff)
downloadlinux-5f35227ea34bb616c436d9da47fc325866c428f3.tar.xz
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net: Generalize ndo_gso_check to ndo_features_check
GSO isn't the only offload feature with restrictions that potentially can't be expressed with the current features mechanism. Checksum is another although it's a general issue that could in theory apply to anything. Even if it may be possible to implement these restrictions in other ways, it can result in duplicate code or inefficient per-packet behavior. This generalizes ndo_gso_check so that drivers can remove any features that don't make sense for a given packet, similar to netif_skb_features(). It also converts existing driver restrictions to the new format, completing the work that was done to support tunnel protocols since the issues apply to checksums as well. By actually removing features from the set that are used to do offloading, it solves another problem with the existing interface. In these cases, GSO would run with the original set of features and not do anything because it appears that segmentation is not required. CC: Tom Herbert <therbert@google.com> CC: Joe Stringer <joestringer@nicira.com> CC: Eric Dumazet <edumazet@google.com> CC: Hayes Wang <hayeswang@realtek.com> Signed-off-by: Jesse Gross <jesse@nicira.com> Acked-by: Tom Herbert <therbert@google.com> Fixes: 04ffcb255f22 ("net: Add ndo_gso_check") Tested-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/media/dvb-frontends/stv0900.h')
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