net/hyperv/netvsc.c

59 	ret = vmbus_sendpacket(dev->channel, init_pkt,
116 			/* fallback to only primary channel */
203 		ret = vmbus_sendpacket(device->channel,
208 		/* If the failure is because the channel is rescinded;
210 		 * channel. This would allow us to properly cleanup
211 		 * even when the channel is rescinded.
213 		if (device->channel->rescind)
253 		ret = vmbus_sendpacket(device->channel,
259 		/* If the failure is because the channel is rescinded;
261 		 * channel. This would allow us to properly cleanup
262 		 * even when the channel is rescinded.
264 		if (device->channel->rescind)
286 		ret = vmbus_teardown_gpadl(device->channel,
307 		ret = vmbus_teardown_gpadl(device->channel,
324 	int node = cpu_to_node(nvchan->channel->target_cpu);
367 	 * channel.  Note: This call uses the vmbus connection rather
368 	 * than the channel to establish the gpadl handle.
370 	ret = vmbus_establish_gpadl(device->channel, net_device->recv_buf,
391 	ret = vmbus_sendpacket(device->channel, init_packet,
470 	 * channel.  Note: This call uses the vmbus connection rather
471 	 * than the channel to establish the gpadl handle.
473 	ret = vmbus_establish_gpadl(device->channel, net_device->send_buf,
493 	ret = vmbus_sendpacket(device->channel, init_packet,
569 	ret = vmbus_sendpacket(device->channel, init_packet,
608 	ret = vmbus_sendpacket(device->channel, init_packet,
672 	ret = vmbus_sendpacket(device->channel, init_packet,
714 		/* only disable enabled NAPI channel */
727 	/* Now, we can close the channel safely */
728 	vmbus_close(device->channel);
754 				    struct vmbus_channel *channel,
764 	cmd_rqst = channel->request_addr_callback(channel, desc->trans_id);
804 		    (hv_get_avail_to_write_percent(&channel->outbound) >
1064 	struct vmbus_channel *out_channel = nvchan->channel;
1326 		ret = vmbus_sendpacket(nvchan->channel, &msg, sizeof(msg),
1398 	struct vmbus_channel *channel = nvchan->channel;
1403 	u16 q_idx = channel->offermsg.offer.sub_channel_index;
1609 	struct vmbus_channel *channel = nvchan->channel;
1612 	trace_nvsp_recv(ndev, channel, nvmsg);
1616 		netvsc_send_completion(ndev, net_device, channel, desc, budget);
1635 static struct hv_device *netvsc_channel_to_device(struct vmbus_channel *channel)
1637 	struct vmbus_channel *primary = channel->primary_channel;
1639 	return primary ? primary->device_obj : channel->device_obj;
1651 	struct vmbus_channel *channel = nvchan->channel;
1652 	struct hv_device *device = netvsc_channel_to_device(channel);
1659 		nvchan->desc = hv_pkt_iter_first(channel);
1666 		nvchan->desc = hv_pkt_iter_next(channel, nvchan->desc);
1683 	    (ret || hv_end_read(&channel->inbound)) &&
1685 		hv_begin_read(&channel->inbound);
1699 	struct vmbus_channel *channel = nvchan->channel;
1700 	struct hv_ring_buffer_info *rbi = &channel->inbound;
1733 	 * control is done via Net softirq, not the channel handling
1735 	set_channel_read_mode(device->channel, HV_CALL_ISR);
1738 	 * chn_table with the default channel to use it before subchannels are
1740 	 * Initialize the channel state before we open;
1741 	 * we can be interrupted as soon as we open the channel.
1747 		nvchan->channel = device->channel;
1771 	/* Open the channel */
1772 	device->channel->next_request_id_callback = vmbus_next_request_id;
1773 	device->channel->request_addr_callback = vmbus_request_addr;
1774 	device->channel->rqstor_size = netvsc_rqstor_size(netvsc_ring_bytes);
1775 	device->channel->max_pkt_size = NETVSC_MAX_PKT_SIZE;
1777 	ret = vmbus_open(device->channel, netvsc_ring_bytes,
1782 		netdev_err(ndev, "unable to open channel: %d\n", ret);
1787 	netdev_dbg(ndev, "hv_netvsc channel opened successfully\n");
1810 	/* Now, we can close the channel safely */
1811 	vmbus_close(device->channel);