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| author |   David S. Miller <davem@davemloft.net> | 2016-02-21 22:07:11 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-21 22:07:11 -0500 |
| commit | 9c572dc4835aaca7a2f81db184dc25833980bb9c (patch) | |
| tree | 78c48c223c2b45253361e929a1bffc291dd16925 /include/linux/skbuff.h | |
| parent | Merge branch 'geneve-vxlan-outer-checksum' (diff) | |
| parent | bpf: don't emit mov A,A on return (diff) | |
| download | wireguard-linux-9c572dc4835aaca7a2f81db184dc25833980bb9c.tar.xz wireguard-linux-9c572dc4835aaca7a2f81db184dc25833980bb9c.zip | |
Merge branch 'bpf-helper-improvements'
Daniel Borkmann says:
====================
BPF updates
This set contains various updates for eBPF, i.e. the addition of a
generic csum helper function and other misc bits that mostly improve
existing helpers and ease programming with eBPF on cls_bpf. For more
details, please see individual patches.
Set is rebased on top of http://patchwork.ozlabs.org/patch/584465/.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 89b536796e53..6a57757a86cf 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2630,6 +2630,13 @@ static inline int skb_clone_writable(const struct sk_buff *skb, unsigned int len skb_headroom(skb) + len <= skb->hdr_len; } +static inline int skb_try_make_writable(struct sk_buff *skb, + unsigned int write_len) +{ + return skb_cloned(skb) && !skb_clone_writable(skb, write_len) && + pskb_expand_head(skb, 0, 0, GFP_ATOMIC); +} + static inline int __skb_cow(struct sk_buff *skb, unsigned int headroom, int cloned) { |