diff options
Diffstat (limited to 'drivers/dma/ioatdma.h')
| -rw-r--r-- | drivers/dma/ioatdma.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/dma/ioatdma.h b/drivers/dma/ioatdma.h index c6ec933..685adb6 100644 --- a/drivers/dma/ioatdma.h +++ b/drivers/dma/ioatdma.h @@ -27,6 +27,7 @@ #include <linux/dmapool.h> #include <linux/cache.h> #include <linux/pci_ids.h> +#include <net/tcp.h> #define IOAT_DMA_VERSION "2.18" @@ -129,6 +130,20 @@ struct ioat_desc_sw { struct dma_async_tx_descriptor async_tx; }; +static inline void ioat_set_tcp_copy_break(struct ioatdma_device *dev) +{ + #ifdef CONFIG_NET_DMA + switch (dev->version) { + case IOAT_VER_1_2: + sysctl_tcp_dma_copybreak = 4096; + break; + case IOAT_VER_2_0: + sysctl_tcp_dma_copybreak = 2048; + break; + } + #endif +} + #if defined(CONFIG_INTEL_IOATDMA) || defined(CONFIG_INTEL_IOATDMA_MODULE) struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev, void __iomem *iobase); |
