root/net/core/kmap_skb.h

INCLUDED FROM

DEFINITIONS

1. kmap_skb_frag
2. kunmap_skb_frag

#include <linux/highmem.h>

static inline void *kmap_skb_frag(const skb_frag_t *frag)
{
#ifdef CONFIG_HIGHMEM
        BUG_ON(in_irq());

        local_bh_disable();
#endif
        return kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ);
}

static inline void kunmap_skb_frag(void *vaddr)
{
        kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
#ifdef CONFIG_HIGHMEM
        local_bh_enable();
#endif
}