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net: skbuff: hide wifi_acked when CONFIG_WIRELESS not set

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Datacenter kernel builds will very likely not include WIRELESS,
so let them shave 2 bits off the skb by hiding the wifi fields.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2023-04-17 08:53:46 -07:00 • committed by David S. Miller
parent 4edd97fbdc
commit eb6fba7555
4 changed files with 16 additions and 1 deletions
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11
include/linux/skbuff.h
View file

@ -953,8 +953,10 @@ struct sk_buff {
__u8 l4_hash:1;
__u8 sw_hash:1;
#ifdef CONFIG_WIRELESS
__u8 wifi_acked_valid:1;
__u8 wifi_acked:1;
#endif
__u8 no_fcs:1;
/* Indicates the inner headers are valid in the skbuff. */
__u8 encapsulation:1;
@ -1187,6 +1189,15 @@ static inline unsigned int skb_napi_id(const struct sk_buff *skb)
#endif
}
static inline bool skb_wifi_acked_valid(const struct sk_buff *skb)
{
#ifdef CONFIG_WIRELESS
return skb->wifi_acked_valid;
#else
return 0;
#endif
}
/**
* skb_unref - decrement the skb's reference count
* @skb: buffer