__NAPI_ALLOC_SKB(9)                      Linux Networking                     __NAPI_ALLOC_SKB(9)



NAME
       __napi_alloc_skb - allocate skbuff for rx in a specific NAPI instance

SYNOPSIS
       struct sk_buff * __napi_alloc_skb(struct napi_struct * napi, unsigned int len,
                                         gfp_t gfp_mask);

ARGUMENTS
       napi
           napi instance this buffer was allocated for

       len
           length to allocate

       gfp_mask
           get_free_pages mask, passed to alloc_skb and alloc_pages

DESCRIPTION
       Allocate a new sk_buff for use in NAPI receive. This buffer will attempt to allocate the
       head from a special reserved region used only for NAPI Rx allocation. By doing this we can
       save several CPU cycles by avoiding having to disable and re-enable IRQs.

       NULL is returned if there is no free memory.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                       __NAPI_ALLOC_SKB(9)