• E
    net: makes skb_splice_bits() aware of skb->head_frag · 1d0c0b32
    Eric Dumazet 提交于
    __skb_splice_bits() can check if skb to be spliced has its skb->head
    mapped to a page fragment, instead of a kmalloc() area.
    
    If so we can avoid a copy of the skb head and get a reference on
    underlying page.
    Signed-off-by: NEric Dumazet <edumazet@google.com>
    Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
    Cc: Herbert Xu <herbert@gondor.apana.org.au>
    Cc: Maciej Żenczykowski <maze@google.com>
    Cc: Neal Cardwell <ncardwell@google.com>
    Cc: Tom Herbert <therbert@google.com>
    Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
    Cc: Ben Hutchings <bhutchings@solarflare.com>
    Cc: Matt Carlson <mcarlson@broadcom.com>
    Cc: Michael Chan <mchan@broadcom.com>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    1d0c0b32
skbuff.c 82.7 KB