diff options
Diffstat (limited to 'package/kernel/mac80211/patches/650-0015-rtl8xxxu-Make-DMA-aggregation-optional-by-setting-a-.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/650-0015-rtl8xxxu-Make-DMA-aggregation-optional-by-setting-a-.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/650-0015-rtl8xxxu-Make-DMA-aggregation-optional-by-setting-a-.patch b/package/kernel/mac80211/patches/650-0015-rtl8xxxu-Make-DMA-aggregation-optional-by-setting-a-.patch new file mode 100644 index 0000000000..878cb62383 --- /dev/null +++ b/package/kernel/mac80211/patches/650-0015-rtl8xxxu-Make-DMA-aggregation-optional-by-setting-a-.patch @@ -0,0 +1,54 @@ +From 0640e5cd53bc004be1a9a1af6d340baab44d9351 Mon Sep 17 00:00:00 2001 +From: Jes Sorensen <Jes.Sorensen@redhat.com> +Date: Thu, 16 Jun 2016 14:46:05 -0400 +Subject: [PATCH] rtl8xxxu: Make DMA aggregation optional by setting a module + parameter + +Let the default to off until we have more data on the right default +tuning values. + +Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> +--- + drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 11 +++++++++-- + 1 file changed, 9 insertions(+), 2 deletions(-) + +--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c ++++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +@@ -44,6 +44,7 @@ + + int rtl8xxxu_debug = RTL8XXXU_DEBUG_EFUSE; + static bool rtl8xxxu_ht40_2g; ++static bool rtl8xxxu_dma_aggregation; + + MODULE_AUTHOR("Jes Sorensen <Jes.Sorensen@redhat.com>"); + MODULE_DESCRIPTION("RTL8XXXu USB mac80211 Wireless LAN Driver"); +@@ -62,6 +63,8 @@ module_param_named(debug, rtl8xxxu_debug + MODULE_PARM_DESC(debug, "Set debug mask"); + module_param_named(ht40_2g, rtl8xxxu_ht40_2g, bool, 0600); + MODULE_PARM_DESC(ht40_2g, "Enable HT40 support on the 2.4GHz band"); ++module_param_named(dma_aggregation, rtl8xxxu_dma_aggregation, bool, 0600); ++MODULE_PARM_DESC(dma_aggregation, "Enable DMA packet aggregation"); + + #define USB_VENDOR_ID_REALTEK 0x0bda + #define RTL8XXXU_RX_URBS 32 +@@ -4411,14 +4414,18 @@ void rtl8xxxu_gen1_init_aggregation(stru + + usb_spec = rtl8xxxu_read8(priv, REG_USB_SPECIAL_OPTION); + usb_spec &= ~USB_SPEC_USB_AGG_ENABLE; ++ rtl8xxxu_write8(priv, REG_USB_SPECIAL_OPTION, usb_spec); + + agg_ctrl = rtl8xxxu_read8(priv, REG_TRXDMA_CTRL); + agg_ctrl &= ~TRXDMA_CTRL_RXDMA_AGG_EN; + +- agg_ctrl |= TRXDMA_CTRL_RXDMA_AGG_EN; ++ if (!rtl8xxxu_dma_aggregation) { ++ rtl8xxxu_write8(priv, REG_TRXDMA_CTRL, agg_ctrl); ++ return; ++ } + ++ agg_ctrl |= TRXDMA_CTRL_RXDMA_AGG_EN; + rtl8xxxu_write8(priv, REG_TRXDMA_CTRL, agg_ctrl); +- rtl8xxxu_write8(priv, REG_USB_SPECIAL_OPTION, usb_spec); + + /* + * The number of packets we can take looks to be buffer size / 512 |