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  1. 26 1月, 2010 2 次提交
  3. 20 1月, 2010 1 次提交
  5. 22 12月, 2009 1 次提交
  7. 12 11月, 2009 2 次提交
  9. 03 11月, 2009 1 次提交
  11. 28 10月, 2009 1 次提交
    • Z
      iwlwifi: use paged Rx · 2f301227
      由 Zhu Yi 提交于 
      This switches the iwlwifi driver to use paged skb from linear skb for Rx
buffer. So that it relieves some Rx buffer allocation pressure for the
memory subsystem. Currently iwlwifi (4K for 3945) requests 8K bytes for
Rx buffer. Due to the trailing skb_shared_info in the skb->data,
alloc_skb() will do the next order allocation, which is 16K bytes. This
is suboptimal and more likely to fail when the system is under memory
usage pressure. Switching to paged Rx skb lets us allocate the RXB
directly by alloc_pages(), so that only order 1 allocation is required.

It also adjusts the area spin_lock (with IRQ disabled) protected in the
tasklet because tasklet guarentees to run only on one CPU and the new
unprotected code can be preempted by the IRQ handler. This saves us from
spawning another workqueue to make skb_linearize/__pskb_pull_tail happy
(which cannot be called in hard irq context).

Finally, mac80211 doesn't support paged Rx yet. So we linearize the skb
for all the management frames and software decryption or defragmentation
required data frames before handed to mac80211. For all the other frames,
we __pskb_pull_tail 64 bytes in the linear area of the skb for mac80211
to handle them properly.
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      2f301227
  13. 08 10月, 2009 1 次提交
  15. 29 8月, 2009 1 次提交
  17. 28 7月, 2009 1 次提交
    • J
      iwlwifi: fix up command sending · c2acea8e
      由 Johannes Berg 提交于 
      The current command sending in iwlwifi is a bit of a mess:
 1) there is a struct, iwl_cmd, that contains both driver
    and device data in a single packed structure -- this
    is very confusing
 2) the on-stack data and the command metadata share a
    structure by embedding the latter in the former, which
    is also rather confusing because it leads to weird
    unions and similarly odd constructs
 3) each txq always has enough space for 256 commands,
    even if only 32 end up being used

This patch fixes these things:
 1) rename iwl_cmd to iwl_device_cmd and keep track of
    command metadata and device command separately, in
    two arrays in each tx queue
 2) remove the 'meta' member from iwl_host_cmd and only
    put in the required members
 3) allocate the cmd/meta arrays separately instead of
    embedding them into the txq structure
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      c2acea8e
  19. 11 7月, 2009 1 次提交
  21. 23 5月, 2009 1 次提交
  23. 21 5月, 2009 1 次提交
  25. 12 5月, 2009 1 次提交
  27. 29 4月, 2009 1 次提交
  29. 23 4月, 2009 3 次提交
  31. 28 2月, 2009 1 次提交
  33. 14 2月, 2009 1 次提交
  35. 10 2月, 2009 1 次提交
  37. 30 1月, 2009 4 次提交
  39. 13 12月, 2008 1 次提交
  41. 11 11月, 2008 1 次提交
  43. 07 11月, 2008 1 次提交
  45. 01 11月, 2008 6 次提交
  47. 07 10月, 2008 3 次提交
  49. 25 9月, 2008 1 次提交
  51. 16 9月, 2008 1 次提交