From: chetan loke <loke.chetan@gmail.com>
Date: Fri, 19 Aug 2011 10:18:16 +0000 (+0000)
Subject: af-packet: TPACKET_V3 flexible buffer implementation.
X-Git-Tag: v3.2-rc1~129^2~407
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6fb8f100b807378fda19e83e5ac6828b638603a;p=pandora-kernel.git

af-packet: TPACKET_V3 flexible buffer implementation.

1) Blocks can be configured with non-static frame-size.
2) Read/poll is at a block-level(as opposed to packet-level).
3) Added poll timeout to avoid indefinite user-space wait on idle links.
4) Added user-configurable knobs:
   4.1) block::timeout.
   4.2) tpkt_hdr::sk_rxhash.

Changes:
C1) tpacket_rcv()
    C1.1) packet_current_frame() is replaced by packet_current_rx_frame()
          The bulk of the processing is then moved in the following chain:
          packet_current_rx_frame()
            __packet_lookup_frame_in_block
              fill_curr_block()
              or
                retire_current_block
                dispatch_next_block
              or
              return NULL(queue is plugged/paused)

Signed-off-by: Chetan Loke <loke.chetan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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