Message ID | 1343239722-21328-1-git-send-email-haiyangz@microsoft.com |
---|---|
State | Accepted, archived |
Delegated to: | David Miller |
Headers | show |
From: Haiyang Zhang <haiyangz@microsoft.com> Date: Wed, 25 Jul 2012 11:08:41 -0700 > It prevents ring_size being set to a too small value. > > Reported-by: Jason Wang <jasowang@redhat.com> > Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> > Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 8e23c08..8c5a1c4 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -47,7 +47,7 @@ struct net_device_context { struct work_struct work; }; - +#define RING_SIZE_MIN 64 static int ring_size = 128; module_param(ring_size, int, S_IRUGO); MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); @@ -518,6 +518,11 @@ static void __exit netvsc_drv_exit(void) static int __init netvsc_drv_init(void) { + if (ring_size < RING_SIZE_MIN) { + ring_size = RING_SIZE_MIN; + pr_info("Increased ring_size to %d (min allowed)\n", + ring_size); + } return vmbus_driver_register(&netvsc_drv); }