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xen/pvcalls: implement socket command

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Just reply with success to the other end for now. Delay the allocation
of the actual socket to bind and/or connect.

Signed-off-by: Stefano Stabellini <[email protected]>
Reviewed-by: Boris Ostrovsky <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
CC: [email protected]
CC: [email protected]
Signed-off-by: Boris Ostrovsky <[email protected]>
This commit is contained in:
Stefano Stabellini 2017-07-06 11:01:00 -07:00 • committed by Boris Ostrovsky
commit fb0298754a
1 changed files with 27 additions and 0 deletions
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27
drivers/xen/pvcalls-back.c
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@ -12,12 +12,17 @@
* GNU General Public License for more details.
*/
#include <linux/inet.h>
#include <linux/kthread.h>
#include <linux/list.h>
#include <linux/radix-tree.h>
#include <linux/module.h>
#include <linux/semaphore.h>
#include <linux/wait.h>
#include <net/sock.h>
#include <net/inet_common.h>
#include <net/inet_connection_sock.h>
#include <net/request_sock.h>
#include <xen/events.h>
#include <xen/grant_table.h>
@ -52,6 +57,28 @@ struct pvcalls_fedata {
static int pvcalls_back_socket(struct xenbus_device *dev,
struct xen_pvcalls_request *req)
{
struct pvcalls_fedata *fedata;
int ret;
struct xen_pvcalls_response *rsp;
fedata = dev_get_drvdata(&dev->dev);
if (req->u.socket.domain != AF_INET ||
req->u.socket.type != SOCK_STREAM ||
(req->u.socket.protocol != IPPROTO_IP &&
req->u.socket.protocol != AF_INET))
ret = -EAFNOSUPPORT;
else
ret = 0;
/* leave the actual socket allocation for later */
rsp = RING_GET_RESPONSE(&fedata->ring, fedata->ring.rsp_prod_pvt++);
rsp->req_id = req->req_id;
rsp->cmd = req->cmd;
rsp->u.socket.id = req->u.socket.id;
rsp->ret = ret;
return 0;
}