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authorHauke Mehrtens <hauke@openwrt.org>2013-02-18 20:44:26 +0000
committerHauke Mehrtens <hauke@openwrt.org>2013-02-18 20:44:26 +0000
commit5ff0c7a66c3932b202f4bd309c3d3ca911cde2e3 (patch)
treebf64752fbc5f2e606b5feb486067a94cba9481b8
parenta96a74fc06f7257707d01ac6bf0ce4c365300172 (diff)
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mac80211: 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/trunk@35671 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--package/mac80211/patches/840-43-increase_number_of_rx_dma_slots.patch11
1 files changed, 11 insertions, 0 deletions
diff --git a/package/mac80211/patches/840-43-increase_number_of_rx_dma_slots.patch b/package/mac80211/patches/840-43-increase_number_of_rx_dma_slots.patch
new file mode 100644
index 0000000000..94c6ff2dbb
--- /dev/null
+++ b/package/mac80211/patches/840-43-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)
+