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| author | Xie He <xie.he.0141@gmail.com> | 2021-02-06 01:41:24 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-02-07 01:59:28 +0300 |
| commit | 21c85974aab7211619d39364990427af543c88ac (patch) | |
| tree | 849d996f56e276eac84aa7ae790313ce97027650 /net/ipv4/netfilter/nft_dup_ipv4.c | |
| parent | 163a180213afb2d0ec16cd71d0e0669cb940cd08 (diff) | |
| download | linux-21c85974aab7211619d39364990427af543c88ac.tar.xz | |
net/packet: Improve the comment about LL header visibility criteria
The "dev_has_header" function, recently added in
commit d549699048b4 ("net/packet: fix packet receive on L3 devices
without visible hard header"),
is more accurate as criteria for determining whether a device exposes
the LL header to upper layers, because in addition to dev->header_ops,
it also checks for dev->header_ops->create.
When transmitting an skb on a device, dev_hard_header can be called to
generate an LL header. dev_hard_header will only generate a header if
dev->header_ops->create is present.
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20210205224124.21345-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/netfilter/nft_dup_ipv4.c')
0 files changed, 0 insertions, 0 deletions