git: altq: Add byte based limit and counter

[Sepherosa Ziehau]

commit 68dc191620e70ca9c5313f931ea4a9b4e33267fe
Author: Sepherosa Ziehau <sephe at dragonflybsd.org>
Date:   Fri Jun 7 17:18:33 2013 +0800

    altq: Add byte based limit and counter
    
    - This avoids having too much mbufs sitting on the send queue for TSO
      capable devices.  Even by default, DragonFly has already limited TSO
      burst to at most 4 TCP segments, for TSO capable devices, there still
      could be 4 times mbufs sitting on the send queue compared with non-TSO
      capable devices.
    - This paves way for the AQMs, which require send queue byte counter,
      e.g. CoDel.
    
    For ethernet devices, the byte based limit is (1514 x max_packets).
    
    For other devices, e.g. pseudo devices, the byte based limit is
    (MCLBYTES x max_packets).

Summary of changes:
 sys/net/altq/altq_cbq.c                        |  6 +++---
 sys/net/altq/altq_fairq.c                      |  8 ++++----
 sys/net/altq/altq_hfsc.c                       | 10 ++++++----
 sys/net/altq/altq_priq.c                       |  6 +++---
 sys/net/altq/if_altq.h                         | 24 +++++++++++++++++++++++-
 sys/net/if.c                                   |  8 +++++---
 sys/net/if_ethersubr.c                         |  9 +++++++++
 sys/net/ifq_var.h                              |  8 +++-----
 sys/netproto/802_11/ieee80211_dragonfly.h      |  7 ++++---
 sys/netproto/802_11/wlan/ieee80211_dragonfly.c |  2 +-
 sys/netproto/802_11/wlan/ieee80211_power.c     | 17 +++++++++++++++--
 11 files changed, 76 insertions(+), 29 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/68dc191620e70ca9c5313f931ea4a9b4e33267fe


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