diff options
author | Haiyang Zhang <haiyangz@microsoft.com> | 2014-01-27 15:03:42 -0800 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2014-01-27 16:40:45 -0800 |
commit | b679ef73edc251f6d200a7dd2396e9fef9e36fc3 (patch) | |
tree | b04daa074ce7083d763eea8daaf4e7d88a61c320 | |
parent | 731073b9c99d46c6b6c01184f67ee6f75fd7a163 (diff) | |
download | linux-b679ef73edc251f6d200a7dd2396e9fef9e36fc3.tar.bz2 |
hyperv: Add support for physically discontinuous receive buffer
This will allow us to use bigger receive buffer, and prevent allocation failure
due to fragmented memory.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | drivers/hv/channel.c | 14 | ||||
-rw-r--r-- | drivers/net/hyperv/hyperv_net.h | 2 | ||||
-rw-r--r-- | drivers/net/hyperv/netvsc.c | 7 |
3 files changed, 11 insertions, 12 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index cea623c36ae2..69ea36f07b4d 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -209,7 +209,6 @@ static int create_gpadl_header(void *kbuffer, u32 size, { int i; int pagecount; - unsigned long long pfn; struct vmbus_channel_gpadl_header *gpadl_header; struct vmbus_channel_gpadl_body *gpadl_body; struct vmbus_channel_msginfo *msgheader; @@ -219,7 +218,6 @@ static int create_gpadl_header(void *kbuffer, u32 size, int pfnsum, pfncount, pfnleft, pfncurr, pfnsize; pagecount = size >> PAGE_SHIFT; - pfn = virt_to_phys(kbuffer) >> PAGE_SHIFT; /* do we need a gpadl body msg */ pfnsize = MAX_SIZE_CHANNEL_MESSAGE - @@ -248,7 +246,8 @@ static int create_gpadl_header(void *kbuffer, u32 size, gpadl_header->range[0].byte_offset = 0; gpadl_header->range[0].byte_count = size; for (i = 0; i < pfncount; i++) - gpadl_header->range[0].pfn_array[i] = pfn+i; + gpadl_header->range[0].pfn_array[i] = slow_virt_to_phys( + kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT; *msginfo = msgheader; *messagecount = 1; @@ -301,7 +300,9 @@ static int create_gpadl_header(void *kbuffer, u32 size, * so the hypervisor gurantees that this is ok. */ for (i = 0; i < pfncurr; i++) - gpadl_body->pfn[i] = pfn + pfnsum + i; + gpadl_body->pfn[i] = slow_virt_to_phys( + kbuffer + PAGE_SIZE * (pfnsum + i)) >> + PAGE_SHIFT; /* add to msg header */ list_add_tail(&msgbody->msglistentry, @@ -327,7 +328,8 @@ static int create_gpadl_header(void *kbuffer, u32 size, gpadl_header->range[0].byte_offset = 0; gpadl_header->range[0].byte_count = size; for (i = 0; i < pagecount; i++) - gpadl_header->range[0].pfn_array[i] = pfn+i; + gpadl_header->range[0].pfn_array[i] = slow_virt_to_phys( + kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT; *msginfo = msgheader; *messagecount = 1; @@ -344,7 +346,7 @@ nomem: * vmbus_establish_gpadl - Estabish a GPADL for the specified buffer * * @channel: a channel - * @kbuffer: from kmalloc + * @kbuffer: from kmalloc or vmalloc * @size: page-size multiple * @gpadl_handle: some funky thing */ diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index a26eecb1212c..7b594ce3f21d 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -462,7 +462,7 @@ struct nvsp_message { #define NETVSC_MTU 65536 -#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*2) /* 2MB */ +#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */ #define NETVSC_RECEIVE_BUFFER_ID 0xcafe diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 93b485b96249..03a2c6e17158 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -136,8 +136,7 @@ static int netvsc_destroy_recv_buf(struct netvsc_device *net_device) if (net_device->recv_buf) { /* Free up the receive buffer */ - free_pages((unsigned long)net_device->recv_buf, - get_order(net_device->recv_buf_size)); + vfree(net_device->recv_buf); net_device->recv_buf = NULL; } @@ -163,9 +162,7 @@ static int netvsc_init_recv_buf(struct hv_device *device) return -ENODEV; ndev = net_device->ndev; - net_device->recv_buf = - (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO, - get_order(net_device->recv_buf_size)); + net_device->recv_buf = vzalloc(net_device->recv_buf_size); if (!net_device->recv_buf) { netdev_err(ndev, "unable to allocate receive " "buffer of size %d\n", net_device->recv_buf_size); |