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Commit f75580c4 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Eric Van Hensbergen
Browse files

net/9p: Add multi channel support. 



This is needed for supporting multiple mount points.

We can find out the device names to be used with mount by checking

/sys/devices/virtio-pci/virtio*/device file

if the device file have value 9 then the specific virtio device can
be used for mounting.

ex:
 #cat /sys/devices/virtio-pci/virtio1/device
 9

now we can mount using
# mount -t 9p -o trans=virtio virtio1  /mnt/

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
parent 64ba9926

include/linux/virtio_9p.h

+1 −1
Original line number Diff line number Diff line
@@ -6,6 +6,6 @@ 
#include <linux/virtio_config.h>



/* Maximum number of virtio channels per partition (1 for now) */

#define MAX_9P_CHAN	1

#define MAX_9P_CHAN	10



#endif /* _LINUX_VIRTIO_9P_H */

net/9p/trans_virtio.c

+8 −6
Original line number Diff line number Diff line
@@ -296,14 +296,16 @@ p9_virtio_create(struct p9_client *client, const char *devname, char *args) 


	mutex_lock(&virtio_9p_lock);

	while (index < MAX_9P_CHAN) {

		if (chan->initialized && !chan->inuse) {

		if (chan->initialized &&

			!strcmp(devname, dev_name(&chan->vdev->dev))) {

			if (!chan->inuse) {

				chan->inuse = true;

				break;

		} else {

			}

		}

		index++;

		chan = &channels[index];

	}

	}

	mutex_unlock(&virtio_9p_lock);



	if (index >= MAX_9P_CHAN) {