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Commit 513d2d01 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'netvsc-small-changes' 



Stephen Hemminger says:

====================
netvsc: small changes for net-next

One bugfix, and two non-code patches
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 3a70418b 76f5ed88

drivers/net/hyperv/hyperv_net.h

+0 −3
Original line number Diff line number Diff line
@@ -1427,9 +1427,6 @@ struct rndis_message { 
	((void *) rndis_msg)





#define __struct_bcount(x)







#define RNDIS_HEADER_SIZE	(sizeof(struct rndis_message) - \

				 sizeof(union rndis_message_container))

drivers/net/hyperv/netvsc.c

+17 −14
Original line number Diff line number Diff line
@@ -1209,6 +1209,10 @@ static struct hv_device *netvsc_channel_to_device(struct vmbus_channel *channel) 
	return primary ? primary->device_obj : channel->device_obj;

}



/* Network processing softirq

 * Process data in incoming ring buffer from host

 * Stops when ring is empty or budget is met or exceeded.

 */

int netvsc_poll(struct napi_struct *napi, int budget)

{

	struct netvsc_channel *nvchan
@@ -1238,7 +1242,11 @@ int netvsc_poll(struct napi_struct *napi, int budget) 
	}

	hv_pkt_iter_close(channel);



	/* If ring is empty and NAPI is not doing polling */

	/* If budget was not exhausted and

	 * not doing busy poll

	 * then re-enable host interrupts

	 *  and reschedule if ring is not empty.

	 */

	if (work_done < budget &&

	    napi_complete_done(napi, work_done) &&

	    hv_end_read(&channel->inbound) != 0)
@@ -1248,23 +1256,17 @@ int netvsc_poll(struct napi_struct *napi, int budget) 
	return work_done;

}



/* Call back when data is available in host ring buffer.

 * Processing is deferred until network softirq (NAPI)

 */

void netvsc_channel_cb(void *context)

{

	struct vmbus_channel *channel = context;

	struct hv_device *device = netvsc_channel_to_device(channel);

	u16 q_idx = channel->offermsg.offer.sub_channel_index;

	struct netvsc_device *net_device;

	struct net_device *ndev;



	ndev = hv_get_drvdata(device);

	if (unlikely(!ndev))

		return;

	struct netvsc_channel *nvchan = context;



	/* disable interupts from host */

	hv_begin_read(&channel->inbound);

	hv_begin_read(&nvchan->channel->inbound);



	net_device = net_device_to_netvsc_device(ndev);

	napi_schedule(&net_device->chan_table[q_idx].napi);

	napi_schedule(&nvchan->napi);

}



/*
@@ -1294,7 +1296,8 @@ int netvsc_device_add(struct hv_device *device, 
	/* Open the channel */

	ret = vmbus_open(device->channel, ring_size * PAGE_SIZE,

			 ring_size * PAGE_SIZE, NULL, 0,

			 netvsc_channel_cb, device->channel);

			 netvsc_channel_cb,

			 net_device->chan_table);



	if (ret != 0) {

		netdev_err(ndev, "unable to open channel: %d\n", ret);

drivers/net/hyperv/rndis_filter.c

+10 −5
Original line number Diff line number Diff line
@@ -996,23 +996,28 @@ static void netvsc_sc_open(struct vmbus_channel *new_sc) 
		hv_get_drvdata(new_sc->primary_channel->device_obj);

	struct netvsc_device *nvscdev = net_device_to_netvsc_device(ndev);

	u16 chn_index = new_sc->offermsg.offer.sub_channel_index;

	int ret;

	struct netvsc_channel *nvchan;

	unsigned long flags;

	int ret;



	if (chn_index >= nvscdev->num_chn)

		return;



	nvscdev->chan_table[chn_index].mrc.buf

	nvchan = nvscdev->chan_table + chn_index;

	nvchan->mrc.buf

		= vzalloc(NETVSC_RECVSLOT_MAX * sizeof(struct recv_comp_data));



	if (!nvchan->mrc.buf)

		return;



	ret = vmbus_open(new_sc, nvscdev->ring_size * PAGE_SIZE,

			 nvscdev->ring_size * PAGE_SIZE, NULL, 0,

			 netvsc_channel_cb, new_sc);

			 netvsc_channel_cb, nvchan);



	if (ret == 0)

		nvscdev->chan_table[chn_index].channel = new_sc;

		nvchan->channel = new_sc;



	napi_enable(&nvscdev->chan_table[chn_index].napi);

	napi_enable(&nvchan->napi);



	spin_lock_irqsave(&nvscdev->sc_lock, flags);

	nvscdev->num_sc_offered--;