net: mvpp2: fix TSO headers allocation and management

TSO headers are managed with txq index and therefore should be aligned
with the txq size, not with the aggregated txq size.

Fixes: 186cd4d4e414 ("net: mvpp2: software tso support")
Reported-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Yan Markman <ymarkman@marvell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index 9c86cb7..72e43d8 100644 (file)
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -5609,7 +5609,7 @@ static int mvpp2_txq_init(struct mvpp2_port *port,
 
                txq_pcpu->tso_headers =
                        dma_alloc_coherent(port->dev->dev.parent,
-                                          MVPP2_AGGR_TXQ_SIZE * TSO_HEADER_SIZE,
+                                          txq_pcpu->size * TSO_HEADER_SIZE,
                                           &txq_pcpu->tso_headers_dma,
                                           GFP_KERNEL);
                if (!txq_pcpu->tso_headers)
@@ -5623,7 +5623,7 @@ cleanup:
                kfree(txq_pcpu->buffs);
 
                dma_free_coherent(port->dev->dev.parent,
-                                 MVPP2_AGGR_TXQ_SIZE * MVPP2_DESC_ALIGNED_SIZE,
+                                 txq_pcpu->size * TSO_HEADER_SIZE,
                                  txq_pcpu->tso_headers,
                                  txq_pcpu->tso_headers_dma);
        }
@@ -5647,7 +5647,7 @@ static void mvpp2_txq_deinit(struct mvpp2_port *port,
                kfree(txq_pcpu->buffs);
 
                dma_free_coherent(port->dev->dev.parent,
-                                 MVPP2_AGGR_TXQ_SIZE * MVPP2_DESC_ALIGNED_SIZE,
+                                 txq_pcpu->size * TSO_HEADER_SIZE,
                                  txq_pcpu->tso_headers,
                                  txq_pcpu->tso_headers_dma);
        }