diff options
| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2026-02-05 15:44:05 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-02-06 20:07:24 -0800 |
| commit | abf981bb8de6185b2ac80ebc40224d5028e4f8b4 (patch) | |
| tree | 57d1e5618f1b60312a9c64f2349c0e2e907fbb00 | |
| parent | dddb0198c2a887c2eba1a8b0113b46b648163048 (diff) | |
net: skb: allow up to 8 skb extension ids
The skb extension ids range from 0 .. 7 to fit their bits as flags into
a single byte. The ids are automatically enumnerated in enum skb_ext_id
in skbuff.h, where SKB_EXT_NUM is defined as the last value.
When having 8 skb extension ids (0 .. 7), SKB_EXT_NUM becomes 8 which is
a valid value for SKB_EXT_NUM.
Fixes: 96ea3a1e2d31 ("can: add CAN skb extension infrastructure")
Link: https://lore.kernel.org/netdev/aXoMqaA7b2CqJZNA@strlen.de/
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260205-skb_ext-v1-1-9ba992ccee8b@hartkopp.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/core/skbuff.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 45809986dfe1..699c401a5eae 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -5158,7 +5158,7 @@ static __always_inline unsigned int skb_ext_total_length(void) static void skb_extensions_init(void) { - BUILD_BUG_ON(SKB_EXT_NUM >= 8); + BUILD_BUG_ON(SKB_EXT_NUM > 8); #if !IS_ENABLED(CONFIG_KCOV_INSTRUMENT_ALL) BUILD_BUG_ON(skb_ext_total_length() > 255); #endif |