commit 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1
author Johann Baudy <johann.baudy@gnu-log.net> Mon May 18 22:11:22 2009 -0700
committer David S. Miller <davem@davemloft.net> Mon May 18 22:11:22 2009 -0700
tree 24920f17ea435627978af9d5fe0e99763bf6a533
parent f67f34084914144de55c785163d047d5d8dddd2d

net: TX_RING and packet mmap

New packet socket feature that makes packet socket more efficient for
transmission.

- It reduces number of system call through a PACKET_TX_RING mechanism,
  based on PACKET_RX_RING (Circular buffer allocated in kernel space
  which is mmapped from user space).

- It minimizes CPU copy using fragmented SKB (almost zero copy).

Signed-off-by: Johann Baudy <johann.baudy@gnu-log.net>
Signed-off-by: David S. Miller <davem@davemloft.net>