[<prev] [next>] [thread-next>] [day] [month] [year] [list]
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
Powered by blists - more mailing lists