skb_cow_head (9) - Linux Manuals

skb_cow_head: skb_cow but only making the head writable

Command to display skb_cow_head manual in Linux: $ man 9 skb_cow_head

NAME

skb_cow_head - skb_cow but only making the head writable

SYNOPSIS

int skb_cow_head(struct sk_buff * skb, unsigned int headroom);

ARGUMENTS

skb

: buffer to cow

headroom

: needed headroom

DESCRIPTION

This function is identical to skb_cow except that we replace the skb_cloned check by skb_header_cloned. It should be used when you only need to push on some header and do not need to modify the data.