SKBFL_PURE_ZEROCOPY
return skb_shinfo(skb)->flags & SKBFL_PURE_ZEROCOPY;
#define SKBFL_ALL_ZEROCOPY (SKBFL_ZEROCOPY_FRAG | SKBFL_PURE_ZEROCOPY | \
const int zc_flags = SKBFL_SHARED_FRAG | SKBFL_PURE_ZEROCOPY;
skb_shinfo(skb)->flags &= ~SKBFL_PURE_ZEROCOPY;
skb_shinfo(skb)->flags |= SKBFL_PURE_ZEROCOPY;