[full quote for linux-man, Michael] On Tue, May 12, 2009 at 07:58:06PM +0200, Johann Baudy wrote: > Hi Andi, > > Currently, There is nothing in the manpage of packet(7) about RX_RING. Yes mmap was never documented. But if you could do that that would be great. > However I can start to write a summary that describes processes, headers > and statuses of both feature (RX_RING and TX_RING). > I think "Socket Options" section of packet(7) is appropriate. Sounds good. Please send the result to linux-man@xxxxxxxxxxxxxxx -Andi > > Johann > > > On Tue, May 12, 2009 at 6:11 PM, Andi Kleen <andi@xxxxxxxxxxxxxx> wrote: > > > Johann Baudy <johann.baudy@xxxxxxxxxxx> writes: > > > > > From: Johann Baudy <johann.baudy@xxxxxxxxxxx> > > > > > > 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). > > > > When you add new interfaces like this you should add them to the packet (7) > > manpage too. > > > > -Andi > > > > -- > > ak@xxxxxxxxxxxxxxx -- Speaking for myself only. > > -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
