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| SKB_SHARE_CHECK(9) | Linux Networking | SKB_SHARE_CHECK(9) |
NAME¶
skb_share_check - check if buffer is shared and if so clone itSYNOPSIS¶
struct sk_buff * skb_share_check(struct sk_buff * skb, gfp_t pri);
ARGUMENTS¶
struct sk_buff * skbbuffer to check
gfp_t pri
priority for memory allocation
DESCRIPTION¶
If the buffer is shared the buffer is cloned and the old copy drops a reference. A new clone with a single reference is returned. If the buffer is not shared the original buffer is returned. When being called from interrupt status or with spinlocks held pri must be GFP_ATOMIC.NULL is returned on a memory allocation failure.
COPYRIGHT¶
| September 2017 | Kernel Hackers Manual 4.12 |