net: free RX queue structures

Looks like commit e817f85652c1 ("xdp: generic XDP handling of
xdp_rxq_info") replaced kvfree(dev->_rx) in free_netdev() with
a call to netif_free_rx_queues() which doesn't actually free
the rings?

While at it remove the unnecessary temporary variable.

Fixes: e817f85652c1 ("xdp: generic XDP handling of xdp_rxq_info")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 3 insertions, 4 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 852a54c769a3..74e1e5d31337 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -7653,16 +7653,15 @@ err_rxq_info:
 static void netif_free_rx_queues(struct net_device *dev)
 {
         unsigned int i, count = dev->num_rx_queues;
-        struct netdev_rx_queue *rx;
 
         /* netif_alloc_rx_queues alloc failed, resources have been unreg'ed */
         if (!dev->_rx)
                 return;
 
-        rx = dev->_rx;
-
         for (i = 0; i < count; i++)
-                xdp_rxq_info_unreg(&rx[i].xdp_rxq);
+                xdp_rxq_info_unreg(&dev->_rx[i].xdp_rxq);
+
+        kvfree(dev->_rx);
 }
 
 static void netdev_init_one_queue(struct net_device *dev,