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hv_netvsc: don't lose VF information

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struct netvsc_device is not suitable for storing VF information as this
structure is being destroyed on MTU change / set channel operation (see
rndis_filter_device_remove()). Move all VF related stuff to struct
net_device_context which is persistent.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vitaly Kuznetsov
2016-08-15 17:48:39 +02:00
committed by David S. Miller
parent 3d7b332092
commit f9a7da9130
3 changed files with 45 additions and 42 deletions
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19
drivers/net/hyperv/netvsc.c
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@@ -77,13 +77,9 @@ static struct netvsc_device *alloc_net_device(void)
init_waitqueue_head(&net_device->wait_drain);
net_device->destroy = false;
atomic_set(&net_device->open_cnt, 0);
atomic_set(&net_device->vf_use_cnt, 0);
net_device->max_pkt = RNDIS_MAX_PKT_DEFAULT;
net_device->pkt_align = RNDIS_PKT_ALIGN_DEFAULT;
net_device->vf_netdev = NULL;
net_device->vf_inject = false;
return net_device;
}
@@ -1106,16 +1102,16 @@ static void netvsc_send_table(struct hv_device *hdev,
nvscdev->send_table[i] = tab[i];
}
static void netvsc_send_vf(struct netvsc_device *nvdev,
static void netvsc_send_vf(struct net_device_context *net_device_ctx,
struct nvsp_message *nvmsg)
{
nvdev->vf_alloc = nvmsg->msg.v4_msg.vf_assoc.allocated;
nvdev->vf_serial = nvmsg->msg.v4_msg.vf_assoc.serial;
net_device_ctx->vf_alloc = nvmsg->msg.v4_msg.vf_assoc.allocated;
net_device_ctx->vf_serial = nvmsg->msg.v4_msg.vf_assoc.serial;
}
static inline void netvsc_receive_inband(struct hv_device *hdev,
struct netvsc_device *nvdev,
struct nvsp_message *nvmsg)
struct net_device_context *net_device_ctx,
struct nvsp_message *nvmsg)
{
switch (nvmsg->hdr.msg_type) {
case NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE:
@@ -1123,7 +1119,7 @@ static inline void netvsc_receive_inband(struct hv_device *hdev,
break;
case NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION:
netvsc_send_vf(nvdev, nvmsg);
netvsc_send_vf(net_device_ctx, nvmsg);
break;
}
}
@@ -1136,6 +1132,7 @@ static void netvsc_process_raw_pkt(struct hv_device *device,
struct vmpacket_descriptor *desc)
{
struct nvsp_message *nvmsg;
struct net_device_context *net_device_ctx = netdev_priv(ndev);
nvmsg = (struct nvsp_message *)((unsigned long)
desc + (desc->offset8 << 3));
@@ -1150,7 +1147,7 @@ static void netvsc_process_raw_pkt(struct hv_device *device,
break;
case VM_PKT_DATA_INBAND:
netvsc_receive_inband(device, net_device, nvmsg);
netvsc_receive_inband(device, net_device_ctx, nvmsg);
break;
default: