netvsc: don't access netdev->num_rx_queues directly

This structure member is hidden behind CONFIG_SYSFS, and we
get a build error when that is disabled:

drivers/net/hyperv/netvsc_drv.c: In function 'netvsc_set_channels':
drivers/net/hyperv/netvsc_drv.c:754:49: error: 'struct net_device' has no member named 'num_rx_queues'; did you mean 'num_tx_queues'?
drivers/net/hyperv/netvsc_drv.c: In function 'netvsc_set_rxfh':
drivers/net/hyperv/netvsc_drv.c:1181:25: error: 'struct net_device' has no member named 'num_rx_queues'; did you mean 'num_tx_queues'?

As the value is only set once to the argument of alloc_netdev_mq(),
we can compare against that constant directly.

Fixes: ff4a44199012 ("netvsc: allow get/set of RSS indirection table")
Fixes: 2b01888d1b45 ("netvsc: allow more flexible setting of number of channels")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 82d6c02..643c539 100644 (file)
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -776,7 +776,7 @@ static int netvsc_set_channels(struct net_device *net,
            channels->rx_count || channels->tx_count || channels->other_count)
                return -EINVAL;
 
-       if (count > net->num_tx_queues || count > net->num_rx_queues)
+       if (count > net->num_tx_queues || count > VRSS_CHANNEL_MAX)
                return -EINVAL;
 
        if (!nvdev || nvdev->destroy)
@@ -1203,7 +1203,7 @@ static int netvsc_set_rxfh(struct net_device *dev, const u32 *indir,
        rndis_dev = ndev->extension;
        if (indir) {
                for (i = 0; i < ITAB_NUM; i++)
-                       if (indir[i] >= dev->num_rx_queues)
+                       if (indir[i] >= VRSS_CHANNEL_MAX)
                                return -EINVAL;
 
                for (i = 0; i < ITAB_NUM; i++)