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Message-Id: <1306360944-9796-1-git-send-email-haiyangz@microsoft.com>
Date: Wed, 25 May 2011 15:02:24 -0700
From: Haiyang Zhang <haiyangz@...rosoft.com>
To: haiyangz@...rosoft.com, hjanssen@...rosoft.com, kys@...rosoft.com,
v-abkane@...rosoft.com, gregkh@...e.de,
linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
virtualization@...ts.osdl.org
Subject: [PATCH 1/1] staging: hv: remove netvsc send buffer and related functions
netvsc send buffer is not used, so remove it.
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
Signed-off-by: Hank Janssen <hjanssen@...rosoft.com>
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
---
drivers/staging/hv/hyperv_net.h | 10 ---
drivers/staging/hv/netvsc.c | 161 ---------------------------------------
2 files changed, 0 insertions(+), 171 deletions(-)
diff --git a/drivers/staging/hv/hyperv_net.h b/drivers/staging/hv/hyperv_net.h
index cf762bd..27f987b 100644
--- a/drivers/staging/hv/hyperv_net.h
+++ b/drivers/staging/hv/hyperv_net.h
@@ -355,10 +355,6 @@ struct nvsp_message {
/* #define NVSC_MIN_PROTOCOL_VERSION 1 */
/* #define NVSC_MAX_PROTOCOL_VERSION 1 */
-#define NETVSC_SEND_BUFFER_SIZE (64*1024) /* 64K */
-#define NETVSC_SEND_BUFFER_ID 0xface
-
-
#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024) /* 1MB */
#define NETVSC_RECEIVE_BUFFER_ID 0xcafe
@@ -383,12 +379,6 @@ struct netvsc_device {
struct list_head recv_pkt_list;
spinlock_t recv_pkt_list_lock;
- /* Send buffer allocated by us but manages by NetVSP */
- void *send_buf;
- u32 send_buf_size;
- u32 send_buf_gpadl_handle;
- u32 send_section_size;
-
/* Receive buffer allocated by us but manages by NetVSP */
void *recv_buf;
u32 recv_buf_size;
diff --git a/drivers/staging/hv/netvsc.c b/drivers/staging/hv/netvsc.c
index 41cbb26..7b5bf0d 100644
--- a/drivers/staging/hv/netvsc.c
+++ b/drivers/staging/hv/netvsc.c
@@ -323,162 +323,6 @@ exit:
return ret;
}
-static int netvsc_destroy_send_buf(struct netvsc_device *net_device)
-{
- struct nvsp_message *revoke_packet;
- int ret = 0;
-
- /*
- * If we got a section count, it means we received a
- * SendReceiveBufferComplete msg (ie sent
- * NvspMessage1TypeSendReceiveBuffer msg) therefore, we need
- * to send a revoke msg here
- */
- if (net_device->send_section_size) {
- /* Send the revoke send buffer */
- revoke_packet = &net_device->revoke_packet;
- memset(revoke_packet, 0, sizeof(struct nvsp_message));
-
- revoke_packet->hdr.msg_type =
- NVSP_MSG1_TYPE_REVOKE_SEND_BUF;
- revoke_packet->msg.v1_msg.
- revoke_send_buf.id = NETVSC_SEND_BUFFER_ID;
-
- ret = vmbus_sendpacket(net_device->dev->channel,
- revoke_packet,
- sizeof(struct nvsp_message),
- (unsigned long)revoke_packet,
- VM_PKT_DATA_INBAND, 0);
- /*
- * If we failed here, we might as well return and have a leak
- * rather than continue and a bugchk
- */
- if (ret != 0) {
- dev_err(&net_device->dev->device, "unable to send "
- "revoke send buffer to netvsp");
- return -1;
- }
- }
-
- /* Teardown the gpadl on the vsp end */
- if (net_device->send_buf_gpadl_handle) {
- ret = vmbus_teardown_gpadl(net_device->dev->channel,
- net_device->send_buf_gpadl_handle);
-
- /*
- * If we failed here, we might as well return and have a leak
- * rather than continue and a bugchk
- */
- if (ret != 0) {
- dev_err(&net_device->dev->device,
- "unable to teardown send buffer's gpadl");
- return -1;
- }
- net_device->send_buf_gpadl_handle = 0;
- }
-
- if (net_device->send_buf) {
- /* Free up the receive buffer */
- free_pages((unsigned long)net_device->send_buf,
- get_order(net_device->send_buf_size));
- net_device->send_buf = NULL;
- }
-
- return ret;
-}
-
-static int netvsc_init_send_buf(struct hv_device *device)
-{
- int ret = 0;
- int t;
- struct netvsc_device *net_device;
- struct nvsp_message *init_packet;
-
- net_device = get_outbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "unable to get net device..."
- "device being destroyed?");
- return -1;
- }
- if (net_device->send_buf_size <= 0) {
- ret = -EINVAL;
- goto cleanup;
- }
-
- net_device->send_buf =
- (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO,
- get_order(net_device->send_buf_size));
- if (!net_device->send_buf) {
- dev_err(&device->device, "unable to allocate send "
- "buffer of size %d", net_device->send_buf_size);
- ret = -1;
- goto cleanup;
- }
-
- /*
- * Establish the gpadl handle for this buffer on this
- * channel. Note: This call uses the vmbus connection rather
- * than the channel to establish the gpadl handle.
- */
- ret = vmbus_establish_gpadl(device->channel, net_device->send_buf,
- net_device->send_buf_size,
- &net_device->send_buf_gpadl_handle);
- if (ret != 0) {
- dev_err(&device->device, "unable to establish send buffer's gpadl");
- goto cleanup;
- }
-
- /* Notify the NetVsp of the gpadl handle */
- init_packet = &net_device->channel_init_pkt;
-
- memset(init_packet, 0, sizeof(struct nvsp_message));
-
- init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_SEND_BUF;
- init_packet->msg.v1_msg.send_recv_buf.
- gpadl_handle = net_device->send_buf_gpadl_handle;
- init_packet->msg.v1_msg.send_recv_buf.id =
- NETVSC_SEND_BUFFER_ID;
-
- /* Send the gpadl notification request */
- ret = vmbus_sendpacket(device->channel, init_packet,
- sizeof(struct nvsp_message),
- (unsigned long)init_packet,
- VM_PKT_DATA_INBAND,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
- if (ret != 0) {
- dev_err(&device->device,
- "unable to send receive buffer's gpadl to netvsp");
- goto cleanup;
- }
-
- t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
-
- BUG_ON(t == 0);
-
- /* Check the response */
- if (init_packet->msg.v1_msg.
- send_send_buf_complete.status != NVSP_STAT_SUCCESS) {
- dev_err(&device->device, "Unable to complete send buffer "
- "initialzation with NetVsp - status %d",
- init_packet->msg.v1_msg.
- send_send_buf_complete.status);
- ret = -1;
- goto cleanup;
- }
-
- net_device->send_section_size = init_packet->
- msg.v1_msg.send_send_buf_complete.section_size;
-
- goto exit;
-
-cleanup:
- netvsc_destroy_send_buf(net_device);
-
-exit:
- put_net_device(device);
- return ret;
-}
-
static int netvsc_connect_vsp(struct hv_device *device)
{
@@ -556,8 +400,6 @@ static int netvsc_connect_vsp(struct hv_device *device)
/* Post the big receive buffer to NetVSP */
ret = netvsc_init_recv_buf(device);
- if (ret == 0)
- ret = netvsc_init_send_buf(device);
cleanup:
put_net_device(device);
@@ -567,7 +409,6 @@ cleanup:
static void netvsc_disconnect_vsp(struct netvsc_device *net_device)
{
netvsc_destroy_recv_buf(net_device);
- netvsc_destroy_send_buf(net_device);
}
/*
@@ -1099,8 +940,6 @@ int netvsc_device_add(struct hv_device *device, void *additional_info)
net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE;
spin_lock_init(&net_device->recv_pkt_list_lock);
- net_device->send_buf_size = NETVSC_SEND_BUFFER_SIZE;
-
INIT_LIST_HEAD(&net_device->recv_pkt_list);
for (i = 0; i < NETVSC_RECEIVE_PACKETLIST_COUNT; i++) {
--
1.6.3.2
--
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