SKB_HEAD_IS_LOCKED(9) Linux Networking SKB_HEAD_IS_LOCKED(9) NAME skb_head_is_locked - Determine if the skb->head is locked down SYNOPSIS bool skb_head_is_locked(const struct sk_buff * skb); ARGUMENTS skb skb to check DESCRIPTION The head on skbs build around a head frag can be removed if they are not cloned. This function returns true if the skb head is locked down due to either being allocated via kmalloc, or by being a clone with multiple references to the head. COPYRIGHT Kernel Hackers Manual 3.11 November 2013 SKB_HEAD_IS_LOCKED(9)[top]
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