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Message-Id: <1407953024-35191-1-git-send-email-haiyangz@microsoft.com> Date: Wed, 13 Aug 2014 18:03:44 +0000 From: Haiyang Zhang <haiyangz@...rosoft.com> To: davem@...emloft.net, netdev@...r.kernel.org Cc: haiyangz@...rosoft.com, kys@...rosoft.com, olaf@...fle.de, jasowang@...hat.com, linux-kernel@...r.kernel.org, driverdev-devel@...uxdriverproject.org Subject: [PATCH net-next,v2] hyperv: Increase the buffer length for netvsc_channel_cb() When the buffer is too small for a packet from VMBus, a bigger buffer will be allocated in netvsc_channel_cb() and retry reading the packet from VMBus. Increasing this buffer size will reduce the retry overhead. Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com> Reviewed-by: Dexuan Cui <decui@...rosoft.com> --- drivers/net/hyperv/hyperv_net.h | 2 +- drivers/net/hyperv/netvsc.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index d5e07de..b14a0ef 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -591,7 +591,7 @@ struct nvsp_message { #define NETVSC_RECEIVE_BUFFER_ID 0xcafe -#define NETVSC_PACKET_SIZE 2048 +#define NETVSC_PACKET_SIZE 4096 #define VRSS_SEND_TAB_SIZE 16 diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 66979cf..45899f2 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -38,7 +38,7 @@ static struct netvsc_device *alloc_net_device(struct hv_device *device) struct netvsc_device *net_device; struct net_device *ndev = hv_get_drvdata(device); - net_device = kzalloc(sizeof(struct netvsc_device), GFP_KERNEL); + net_device = vzalloc(sizeof(*net_device)); if (!net_device) return NULL; @@ -551,7 +551,7 @@ int netvsc_device_remove(struct hv_device *device) if (net_device->sub_cb_buf) vfree(net_device->sub_cb_buf); - kfree(net_device); + vfree(net_device); return 0; } @@ -1093,7 +1093,7 @@ close: vmbus_close(device->channel); cleanup: - kfree(net_device); + vfree(net_device); return ret; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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