datapath: Factor out code for getting and setting listen mask.

This fixes GCC warnings on 64-bit architectures caused by storing an "int"
in the "void *" f->private_data field.

diff --git a/datapath/datapath.c b/datapath/datapath.c
index e0b0e2c..756d86b 100644 (file)
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -1382,6 +1382,16 @@ get_port_group(struct datapath *dp, struct odp_port_group *upg)
        return 0;
 }
 
+static int get_listen_mask(const struct file *f)
+{
+       return (long)f->private_data;
+}
+
+static void set_listen_mask(struct file *f, int listen_mask)
+{
+       f->private_data = (void*)(long)listen_mask;
+}
+
 static long openvswitch_ioctl(struct file *f, unsigned int cmd,
                           unsigned long argp)
 {
@@ -1433,7 +1443,7 @@ static long openvswitch_ioctl(struct file *f, unsigned int cmd,
                break;
 
        case ODP_GET_LISTEN_MASK:
-               err = put_user((int)f->private_data, (int __user *)argp);
+               err = put_user(get_listen_mask(f), (int __user *)argp);
                break;
 
        case ODP_SET_LISTEN_MASK:
@@ -1444,7 +1454,7 @@ static long openvswitch_ioctl(struct file *f, unsigned int cmd,
                if (listeners & ~ODPL_ALL)
                        break;
                err = 0;
-               f->private_data = (void*)listeners;
+               set_listen_mask(f, listeners);
                break;
 
        case ODP_PORT_QUERY:
@@ -1511,7 +1521,7 @@ ssize_t openvswitch_read(struct file *f, char __user *buf, size_t nbytes,
                      loff_t *ppos)
 {
        /* XXX is there sufficient synchronization here? */
-       int listeners = (int) f->private_data;
+       int listeners = get_listen_mask(f);
        int dp_idx = iminor(f->f_dentry->d_inode);
        struct datapath *dp = get_dp(dp_idx);
        struct sk_buff *skb;
@@ -1573,7 +1583,7 @@ static unsigned int openvswitch_poll(struct file *file, poll_table *wait)
        if (dp) {
                mask = 0;
                poll_wait(file, &dp->waitqueue, wait);
-               if (dp_has_packet_of_interest(dp, (int)file->private_data))
+               if (dp_has_packet_of_interest(dp, get_listen_mask(file)))
                        mask |= POLLIN | POLLRDNORM;
        } else {
                mask = POLLIN | POLLRDNORM | POLLHUP;