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| author | Stephen Hemminger | 2010-05-04 18:58:53 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2010-05-11 20:36:09 +0200 |
| commit | 450d7a4b7ace20fb1cbb4d87ccbccbac3f8895d0 (patch) | |
| tree | 73cea927dd0458d3dde78493efae9690200b8d3d /drivers/staging/hv/netvsc_drv.c | |
| parent | Staging: hv: cleanup network driver (diff) | |
| download | kernel-qcow2-linux-450d7a4b7ace20fb1cbb4d87ccbccbac3f8895d0.tar.gz kernel-qcow2-linux-450d7a4b7ace20fb1cbb4d87ccbccbac3f8895d0.tar.xz kernel-qcow2-linux-450d7a4b7ace20fb1cbb4d87ccbccbac3f8895d0.zip | |
Staging: hv: ring parameter
The ring size parameter should be number of pages (not bytes).
Add module parameter information as well.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/hv/netvsc_drv.c')
| -rw-r--r-- | drivers/staging/hv/netvsc_drv.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c index 2ce9437b44b5..b02455cfe237 100644 --- a/drivers/staging/hv/netvsc_drv.c +++ b/drivers/staging/hv/netvsc_drv.c @@ -52,7 +52,11 @@ struct netvsc_driver_context { struct netvsc_driver drv_obj; }; -static int netvsc_ringbuffer_size = NETVSC_DEVICE_RING_BUFFER_SIZE; +/* Need at least MAX_SKB_FRAGS (18) + 1 + to handle worst case fragmented packet */ +static int ring_size = roundup_pow_of_two(2*MAX_SKB_FRAGS+1); +module_param(ring_size, int, S_IRUGO); +MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); /* The one and only one */ static struct netvsc_driver_context g_netvsc_drv; @@ -536,7 +540,7 @@ static int netvsc_drv_init(int (*drv_init)(struct hv_driver *drv)) vmbus_get_interface(&net_drv_obj->Base.VmbusChannelInterface); - net_drv_obj->RingBufferSize = netvsc_ringbuffer_size; + net_drv_obj->RingBufferSize = ring_size * PAGE_SIZE; net_drv_obj->OnReceiveCallback = netvsc_recv_callback; net_drv_obj->OnLinkStatusChanged = netvsc_linkstatus_callback; @@ -582,7 +586,6 @@ static void __exit netvsc_exit(void) MODULE_LICENSE("GPL"); MODULE_VERSION(HV_DRV_VERSION); MODULE_DESCRIPTION("Microsoft Hyper-V network driver"); -module_param(netvsc_ringbuffer_size, int, S_IRUGO); module_init(netvsc_init); module_exit(netvsc_exit); |