diff options
| author | stephen hemminger | 2017-08-10 02:46:11 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-08-11 23:00:06 +0200 |
| commit | 8b5327975ae171ca54dfd93e6c042d1292945867 (patch) | |
| tree | cd8b705218c823951c0ae228dfff43651f9ad9f3 /drivers/net/hyperv/hyperv_net.h | |
| parent | netvsc: remove unnecessary check for NULL hdr (diff) | |
| download | kernel-qcow2-linux-8b5327975ae171ca54dfd93e6c042d1292945867.tar.gz kernel-qcow2-linux-8b5327975ae171ca54dfd93e6c042d1292945867.tar.xz kernel-qcow2-linux-8b5327975ae171ca54dfd93e6c042d1292945867.zip | |
netvsc: allow controlling send/recv buffer size
Control the size of the buffer areas via ethtool ring settings.
They aren't really traditional hardware rings, but host API breaks
receive and send buffer into chunks. The final size of the chunks are
controlled by the host.
The default value of send and receive buffer area for host DMA
is much larger than it needs to be. Experimentation shows that
4M receive and 1M send is sufficient.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hyperv/hyperv_net.h')
| -rw-r--r-- | drivers/net/hyperv/hyperv_net.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index a57e37641dc5..30326373e46f 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -148,6 +148,8 @@ struct netvsc_device_info { unsigned char mac_adr[ETH_ALEN]; int ring_size; u32 num_chn; + u32 send_sections; + u32 recv_sections; }; enum rndis_device_state { @@ -634,12 +636,12 @@ struct nvsp_message { #define NETVSC_SEND_BUFFER_SIZE (1024 * 1024 * 15) /* 15MB */ #define NETVSC_INVALID_INDEX -1 +#define NETVSC_SEND_SECTION_SIZE 6144 +#define NETVSC_RECV_SECTION_SIZE 1728 #define NETVSC_RECEIVE_BUFFER_ID 0xcafe #define NETVSC_SEND_BUFFER_ID 0 -#define NETVSC_PACKET_SIZE 4096 - #define VRSS_SEND_TAB_SIZE 16 /* must be power of 2 */ #define VRSS_CHANNEL_MAX 64 #define VRSS_CHANNEL_DEFAULT 8 @@ -754,14 +756,13 @@ struct netvsc_device { /* Receive buffer allocated by us but manages by NetVSP */ void *recv_buf; - u32 recv_buf_size; u32 recv_buf_gpadl_handle; u32 recv_section_cnt; + u32 recv_section_size; u32 recv_completion_cnt; /* Send buffer allocated by us */ void *send_buf; - u32 send_buf_size; u32 send_buf_gpadl_handle; u32 send_section_cnt; u32 send_section_size; |