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authorHauke Mehrtens <hauke@openwrt.org>2013-03-10 20:31:07 +0000
committerHauke Mehrtens <hauke@openwrt.org>2013-03-10 20:31:07 +0000
commitd1e2e3d87b61eb59d4852ce3591d3a53a9ba9c06 (patch)
tree95c49a762e2e1b9ce3dcc0064ebbcbb36821703e /package/mac80211
parentd388ac895418615d0b88d90e1ca46a8e06b41f67 (diff)
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mac80211: backport of r35671: b43: Increase number of RX DMA slots
Bastian Bittorf reported that some of the silent freezes on a Linksys WRT54G were due to overflow of the RX DMA ring buffer, which was created with 64 slots. That finding reminded me that I was seeing similar crashed on a netbook, which also has a relatively slow processor. After increasing the number of slots to 128, runs on the netbook that previously failed now worked; however, I found that 109 slots had been used in one test. For that reason, the number of slots is being increased to 256. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@35947 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/mac80211')
-rw-r--r--package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch11
1 files changed, 11 insertions, 0 deletions
diff --git a/package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch b/package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch
new file mode 100644
index 0000000000..94c6ff2dbb
--- /dev/null
+++ b/package/mac80211/patches/840-b43-increase_number_of_rx_dma_slots.patch
@@ -0,0 +1,11 @@
+--- a/drivers/net/wireless/b43/dma.h
++++ b/drivers/net/wireless/b43/dma.h
+@@ -169,7 +169,7 @@ struct b43_dmadesc_generic {
+
+ /* DMA engine tuning knobs */
+ #define B43_TXRING_SLOTS 256
+-#define B43_RXRING_SLOTS 64
++#define B43_RXRING_SLOTS 256
+ #define B43_DMA0_RX_FW598_BUFSIZE (B43_DMA0_RX_FW598_FO + IEEE80211_MAX_FRAME_LEN)
+ #define B43_DMA0_RX_FW351_BUFSIZE (B43_DMA0_RX_FW351_FO + IEEE80211_MAX_FRAME_LEN)
+