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path: root/drivers/staging/hv/netvsc_drv.c
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Diffstat (limited to 'drivers/staging/hv/netvsc_drv.c')
-rw-r--r--drivers/staging/hv/netvsc_drv.c124
1 files changed, 55 insertions, 69 deletions
diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c
index 54706a16dc0a..2d40f5f86b24 100644
--- a/drivers/staging/hv/netvsc_drv.c
+++ b/drivers/staging/hv/netvsc_drv.c
@@ -36,7 +36,7 @@
#include <net/route.h>
#include <net/sock.h>
#include <net/pkt_sched.h>
-#include "osd.h"
+#include "hv_api.h"
#include "logging.h"
#include "version_info.h"
#include "vmbus.h"
@@ -44,16 +44,10 @@
struct net_device_context {
/* point back to our device context */
- struct vm_device *device_ctx;
+ struct hv_device *device_ctx;
unsigned long avail;
};
-struct netvsc_driver_context {
- /* !! These must be the first 2 fields !! */
- /* Which is a bug FIXME! */
- struct driver_context drv_ctx;
- struct netvsc_driver drv_obj;
-};
#define PACKET_PAGES_LOWATER 8
/* Need this many pages to handle worst case fragmented packet */
@@ -64,7 +58,7 @@ 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;
+static struct netvsc_driver g_netvsc_drv;
/* no-op so the netdev core doesn't return -EINVAL when modifying the the
* multicast address list in SIOCADDMULTI. hv is setup to get all multicast
@@ -76,7 +70,7 @@ static void netvsc_set_multicast_list(struct net_device *net)
static int netvsc_open(struct net_device *net)
{
struct net_device_context *net_device_ctx = netdev_priv(net);
- struct hv_device *device_obj = &net_device_ctx->device_ctx->device_obj;
+ struct hv_device *device_obj = net_device_ctx->device_ctx;
int ret = 0;
if (netif_carrier_ok(net)) {
@@ -99,7 +93,7 @@ static int netvsc_open(struct net_device *net)
static int netvsc_close(struct net_device *net)
{
struct net_device_context *net_device_ctx = netdev_priv(net);
- struct hv_device *device_obj = &net_device_ctx->device_ctx->device_obj;
+ struct hv_device *device_obj = net_device_ctx->device_ctx;
int ret;
netif_stop_queue(net);
@@ -126,7 +120,8 @@ static void netvsc_xmit_completion(void *context)
dev_kfree_skb_any(skb);
- if ((net_device_ctx->avail += num_pages) >= PACKET_PAGES_HIWATER)
+ net_device_ctx->avail += num_pages;
+ if (net_device_ctx->avail >= PACKET_PAGES_HIWATER)
netif_wake_queue(net);
}
}
@@ -134,11 +129,9 @@ static void netvsc_xmit_completion(void *context)
static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
{
struct net_device_context *net_device_ctx = netdev_priv(net);
- struct driver_context *driver_ctx =
- driver_to_driver_context(net_device_ctx->device_ctx->device.driver);
- struct netvsc_driver_context *net_drv_ctx =
- (struct netvsc_driver_context *)driver_ctx;
- struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
+ struct hv_driver *drv =
+ drv_to_hv_drv(net_device_ctx->device_ctx->device.driver);
+ struct netvsc_driver *net_drv_obj = drv->priv;
struct hv_netvsc_packet *packet;
int ret;
unsigned int i, num_pages;
@@ -178,18 +171,18 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
packet->total_data_buflen = skb->len;
/* Start filling in the page buffers starting after RNDIS buffer. */
- packet->page_buf[1].Pfn = virt_to_phys(skb->data) >> PAGE_SHIFT;
- packet->page_buf[1].Offset
+ packet->page_buf[1].pfn = virt_to_phys(skb->data) >> PAGE_SHIFT;
+ packet->page_buf[1].offset
= (unsigned long)skb->data & (PAGE_SIZE - 1);
- packet->page_buf[1].Length = skb_headlen(skb);
+ packet->page_buf[1].len = skb_headlen(skb);
/* Additional fragments are after SKB data */
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
skb_frag_t *f = &skb_shinfo(skb)->frags[i];
- packet->page_buf[i+2].Pfn = page_to_pfn(f->page);
- packet->page_buf[i+2].Offset = f->page_offset;
- packet->page_buf[i+2].Length = f->size;
+ packet->page_buf[i+2].pfn = page_to_pfn(f->page);
+ packet->page_buf[i+2].offset = f->page_offset;
+ packet->page_buf[i+2].len = f->size;
}
/* Set the completion routine */
@@ -197,7 +190,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
packet->completion.send.send_completion_ctx = packet;
packet->completion.send.send_completion_tid = (unsigned long)skb;
- ret = net_drv_obj->send(&net_device_ctx->device_ctx->device_obj,
+ ret = net_drv_obj->send(net_device_ctx->device_ctx,
packet);
if (ret == 0) {
net->stats.tx_bytes += skb->len;
@@ -207,7 +200,8 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
net->stats.tx_packets,
net->stats.tx_bytes);
- if ((net_device_ctx->avail -= num_pages) < PACKET_PAGES_LOWATER)
+ net_device_ctx->avail -= num_pages;
+ if (net_device_ctx->avail < PACKET_PAGES_LOWATER)
netif_stop_queue(net);
} else {
/* we are shutting down or bus overloaded, just drop packet */
@@ -224,8 +218,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
static void netvsc_linkstatus_callback(struct hv_device *device_obj,
unsigned int status)
{
- struct vm_device *device_ctx = to_vm_device(device_obj);
- struct net_device *net = dev_get_drvdata(&device_ctx->device);
+ struct net_device *net = dev_get_drvdata(&device_obj->device);
if (!net) {
DPRINT_ERR(NETVSC_DRV, "got link status but net device "
@@ -236,6 +229,7 @@ static void netvsc_linkstatus_callback(struct hv_device *device_obj,
if (status == 1) {
netif_carrier_on(net);
netif_wake_queue(net);
+ netif_notify_peers(net);
} else {
netif_carrier_off(net);
netif_stop_queue(net);
@@ -249,8 +243,7 @@ static void netvsc_linkstatus_callback(struct hv_device *device_obj,
static int netvsc_recv_callback(struct hv_device *device_obj,
struct hv_netvsc_packet *packet)
{
- struct vm_device *device_ctx = to_vm_device(device_obj);
- struct net_device *net = dev_get_drvdata(&device_ctx->device);
+ struct net_device *net = dev_get_drvdata(&device_obj->device);
struct sk_buff *skb;
void *data;
int i;
@@ -277,16 +270,16 @@ static int netvsc_recv_callback(struct hv_device *device_obj,
* hv_netvsc_packet cannot be deallocated
*/
for (i = 0; i < packet->page_buf_cnt; i++) {
- data = kmap_atomic(pfn_to_page(packet->page_buf[i].Pfn),
+ data = kmap_atomic(pfn_to_page(packet->page_buf[i].pfn),
KM_IRQ1);
data = (void *)(unsigned long)data +
- packet->page_buf[i].Offset;
+ packet->page_buf[i].offset;
- memcpy(skb_put(skb, packet->page_buf[i].Length), data,
- packet->page_buf[i].Length);
+ memcpy(skb_put(skb, packet->page_buf[i].len), data,
+ packet->page_buf[i].len);
kunmap_atomic((void *)((unsigned long)data -
- packet->page_buf[i].Offset), KM_IRQ1);
+ packet->page_buf[i].offset), KM_IRQ1);
}
local_irq_restore(flags);
@@ -337,19 +330,16 @@ static const struct net_device_ops device_ops = {
static int netvsc_probe(struct device *device)
{
- struct driver_context *driver_ctx =
- driver_to_driver_context(device->driver);
- struct netvsc_driver_context *net_drv_ctx =
- (struct netvsc_driver_context *)driver_ctx;
- struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
- struct vm_device *device_ctx = device_to_vm_device(device);
- struct hv_device *device_obj = &device_ctx->device_obj;
+ struct hv_driver *drv =
+ drv_to_hv_drv(device->driver);
+ struct netvsc_driver *net_drv_obj = drv->priv;
+ struct hv_device *device_obj = device_to_hv_device(device);
struct net_device *net = NULL;
struct net_device_context *net_device_ctx;
struct netvsc_device_info device_info;
int ret;
- if (!net_drv_obj->base.OnDeviceAdd)
+ if (!net_drv_obj->base.dev_add)
return -1;
net = alloc_etherdev(sizeof(struct net_device_context));
@@ -360,12 +350,12 @@ static int netvsc_probe(struct device *device)
netif_carrier_off(net);
net_device_ctx = netdev_priv(net);
- net_device_ctx->device_ctx = device_ctx;
+ net_device_ctx->device_ctx = device_obj;
net_device_ctx->avail = ring_size;
dev_set_drvdata(device, net);
/* Notify the netvsc driver of the new device */
- ret = net_drv_obj->base.OnDeviceAdd(device_obj, &device_info);
+ ret = net_drv_obj->base.dev_add(device_obj, &device_info);
if (ret != 0) {
free_netdev(net);
dev_set_drvdata(device, NULL);
@@ -400,7 +390,7 @@ static int netvsc_probe(struct device *device)
ret = register_netdev(net);
if (ret != 0) {
/* Remove the device and release the resource */
- net_drv_obj->base.OnDeviceRemove(device_obj);
+ net_drv_obj->base.dev_rm(device_obj);
free_netdev(net);
}
@@ -409,14 +399,11 @@ static int netvsc_probe(struct device *device)
static int netvsc_remove(struct device *device)
{
- struct driver_context *driver_ctx =
- driver_to_driver_context(device->driver);
- struct netvsc_driver_context *net_drv_ctx =
- (struct netvsc_driver_context *)driver_ctx;
- struct netvsc_driver *net_drv_obj = &net_drv_ctx->drv_obj;
- struct vm_device *device_ctx = device_to_vm_device(device);
- struct net_device *net = dev_get_drvdata(&device_ctx->device);
- struct hv_device *device_obj = &device_ctx->device_obj;
+ struct hv_driver *drv =
+ drv_to_hv_drv(device->driver);
+ struct netvsc_driver *net_drv_obj = drv->priv;
+ struct hv_device *device_obj = device_to_hv_device(device);
+ struct net_device *net = dev_get_drvdata(&device_obj->device);
int ret;
if (net == NULL) {
@@ -424,7 +411,7 @@ static int netvsc_remove(struct device *device)
return 0;
}
- if (!net_drv_obj->base.OnDeviceRemove)
+ if (!net_drv_obj->base.dev_rm)
return -1;
/* Stop outbound asap */
@@ -437,7 +424,7 @@ static int netvsc_remove(struct device *device)
* Call to the vsc driver to let it know that the device is being
* removed
*/
- ret = net_drv_obj->base.OnDeviceRemove(device_obj);
+ ret = net_drv_obj->base.dev_rm(device_obj);
if (ret != 0) {
/* TODO: */
DPRINT_ERR(NETVSC, "unable to remove vsc device (ret %d)", ret);
@@ -458,8 +445,8 @@ static int netvsc_drv_exit_cb(struct device *dev, void *data)
static void netvsc_drv_exit(void)
{
- struct netvsc_driver *netvsc_drv_obj = &g_netvsc_drv.drv_obj;
- struct driver_context *drv_ctx = &g_netvsc_drv.drv_ctx;
+ struct netvsc_driver *netvsc_drv_obj = &g_netvsc_drv;
+ struct hv_driver *drv = &g_netvsc_drv.base;
struct device *current_dev;
int ret;
@@ -467,7 +454,7 @@ static void netvsc_drv_exit(void)
current_dev = NULL;
/* Get the device */
- ret = driver_for_each_device(&drv_ctx->driver, NULL,
+ ret = driver_for_each_device(&drv->driver, NULL,
&current_dev, netvsc_drv_exit_cb);
if (ret)
DPRINT_WARN(NETVSC_DRV,
@@ -483,36 +470,35 @@ static void netvsc_drv_exit(void)
device_unregister(current_dev);
}
- if (netvsc_drv_obj->base.OnCleanup)
- netvsc_drv_obj->base.OnCleanup(&netvsc_drv_obj->base);
+ if (netvsc_drv_obj->base.cleanup)
+ netvsc_drv_obj->base.cleanup(&netvsc_drv_obj->base);
- vmbus_child_driver_unregister(drv_ctx);
+ vmbus_child_driver_unregister(&drv->driver);
return;
}
static int netvsc_drv_init(int (*drv_init)(struct hv_driver *drv))
{
- struct netvsc_driver *net_drv_obj = &g_netvsc_drv.drv_obj;
- struct driver_context *drv_ctx = &g_netvsc_drv.drv_ctx;
+ struct netvsc_driver *net_drv_obj = &g_netvsc_drv;
+ struct hv_driver *drv = &g_netvsc_drv.base;
int ret;
net_drv_obj->ring_buf_size = ring_size * PAGE_SIZE;
net_drv_obj->recv_cb = netvsc_recv_callback;
net_drv_obj->link_status_change = netvsc_linkstatus_callback;
+ drv->priv = net_drv_obj;
/* Callback to client driver to complete the initialization */
drv_init(&net_drv_obj->base);
- drv_ctx->driver.name = net_drv_obj->base.name;
- memcpy(&drv_ctx->class_id, &net_drv_obj->base.deviceType,
- sizeof(struct hv_guid));
+ drv->driver.name = net_drv_obj->base.name;
- drv_ctx->probe = netvsc_probe;
- drv_ctx->remove = netvsc_remove;
+ drv->driver.probe = netvsc_probe;
+ drv->driver.remove = netvsc_remove;
/* The driver belongs to vmbus */
- ret = vmbus_child_driver_register(drv_ctx);
+ ret = vmbus_child_driver_register(&drv->driver);
return ret;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.