diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2026-01-22 20:13:25 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-02-05 09:54:08 -0800 |
| commit | a182a62ff77f705f7dd3d98cf05cb3d03751a8f0 (patch) | |
| tree | 1bb1f12442bdb77d77acf067fed8ad84c16ec011 /include/linux/skbuff.h | |
| parent | a90f6dcefca6d5ad765435b3188a3a440ed193a1 (diff) | |
| parent | 8fdb05de0e2db89d8f56144c60ab784812e8c3b7 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.19-rc9).
No adjacent changes, conflicts:
drivers/net/ethernet/spacemit/k1_emac.c
3125fc1701694 ("net: spacemit: k1-emac: fix jumbo frame support")
f66086798f91f ("net: spacemit: Remove broken flow control support")
https://lore.kernel.org/aYIysFIE9ooavWia@sirena.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index ef56dc6318d3..daa4e4944ce3 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -4302,6 +4302,18 @@ skb_header_pointer(const struct sk_buff *skb, int offset, int len, void *buffer) skb_headlen(skb), buffer); } +/* Variant of skb_header_pointer() where @offset is user-controlled + * and potentially negative. + */ +static inline void * __must_check +skb_header_pointer_careful(const struct sk_buff *skb, int offset, + int len, void *buffer) +{ + if (unlikely(offset < 0 && -offset > skb_headroom(skb))) + return NULL; + return skb_header_pointer(skb, offset, len, buffer); +} + static inline void * __must_check skb_pointer_if_linear(const struct sk_buff *skb, int offset, int len) { |