table of contents
| PSKB_EXPAND_HEAD(9) | Linux Networking | PSKB_EXPAND_HEAD(9) |
NAME¶
pskb_expand_head - reallocate header of sk_buff
SYNOPSIS¶
int pskb_expand_head(struct sk_buff * skb, int nhead, int ntail, gfp_t gfp_mask);
ARGUMENTS¶
skb
buffer to reallocate
nhead
room to add at head
ntail
room to add at tail
gfp_mask
allocation priority
DESCRIPTION¶
Expands (or creates identical copy, if nhead and ntail are zero) header of skb. sk_buff itself is not changed. sk_buff MUST have reference count of 1. Returns zero in the case of success or error, if expansion failed. In the last case, sk_buff is not changed.
All the pointers pointing into skb header may change and must be reloaded after call to this function.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |