netdev - [net-next PATCH 01/12] ixgbe: NULL xdp

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Message-ID: <20170717162624.24315.64344.stgit@john-Precision-Tower-5810>
Date:   Mon, 17 Jul 2017 09:26:24 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     davem@...emloft.net
Cc:     daniel@...earbox.net, ast@...com, netdev@...r.kernel.org,
        john.fastabend@...il.com, brouer@...hat.com, andy@...yhouse.net
Subject: [net-next PATCH 01/12] ixgbe: NULL xdp_tx rings on resource cleanup

tx_rings and rx_rings are cleaned up on close paths in ixgbe driver
however, xdp_rings are not. Set the xdp_rings to NULL here so that
we can use the pointer to indicate if the XDP rings are initialized.

Signed-off-by: John Fastabend <john.fastabend@...il.com>
Acked-by: Daniel Borkmann <daniel@...earbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@...hat.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
index b45fdc9..f1bfae0 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
@@ -1018,8 +1018,12 @@ static void ixgbe_free_q_vector(struct ixgbe_adapter *adapter, int v_idx)
 	struct ixgbe_q_vector *q_vector = adapter->q_vector[v_idx];
 	struct ixgbe_ring *ring;
 
-	ixgbe_for_each_ring(ring, q_vector->tx)
-		adapter->tx_ring[ring->queue_index] = NULL;
+	ixgbe_for_each_ring(ring, q_vector->tx) {
+		if (ring_is_xdp(ring))
+			adapter->xdp_ring[ring->queue_index] = NULL;
+		else
+			adapter->tx_ring[ring->queue_index] = NULL;
+	}
 
 	ixgbe_for_each_ring(ring, q_vector->rx)
 		adapter->rx_ring[ring->queue_index] = NULL;