diff options
| author | Mintz, Yuval <Yuval.Mintz@cavium.com> | 2017-04-07 11:04:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-07 06:26:14 -0700 |
| commit | 89e1afc44765d8b9f509d15df096494f14463e17 (patch) | |
| tree | 460ee4d36a197507a2b7f79da2c90e34db6905cf /drivers/net/ethernet/qlogic/qede/qede_main.c | |
| parent | 10a0176e4e6eb6243c4b1c55e50372e03139d592 (diff) | |
| download | linux-89e1afc44765d8b9f509d15df096494f14463e17.tar.gz linux-89e1afc44765d8b9f509d15df096494f14463e17.tar.bz2 linux-89e1afc44765d8b9f509d15df096494f14463e17.zip | |
qede: Correct XDP forward unmapping
Driver is currently using dma_unmap_single() with the address it
passed to device for the purpose of forwarding, but the XDP
transmission buffer was originally a page allocated for the rx-queue.
The mapped address is likely to differ from the original mapped
address due to the placement offset.
This difference is going to get even bigger once we support headroom.
Cache the original mapped address of the page, and use it for unmapping
of the buffer when completion arrives for the XDP forwarded packet.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic/qede/qede_main.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qede/qede_main.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index abd99109e532..fa62c37dac7a 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -1251,7 +1251,7 @@ static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq) { /* Free the parallel SW ring */ if (txq->is_xdp) - kfree(txq->sw_tx_ring.pages); + kfree(txq->sw_tx_ring.xdp); else kfree(txq->sw_tx_ring.skbs); @@ -1269,9 +1269,9 @@ static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq) /* Allocate the parallel driver ring for Tx buffers */ if (txq->is_xdp) { - size = sizeof(*txq->sw_tx_ring.pages) * TX_RING_SIZE; - txq->sw_tx_ring.pages = kzalloc(size, GFP_KERNEL); - if (!txq->sw_tx_ring.pages) + size = sizeof(*txq->sw_tx_ring.xdp) * TX_RING_SIZE; + txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL); + if (!txq->sw_tx_ring.xdp) goto err; } else { size = sizeof(*txq->sw_tx_ring.skbs) * TX_RING_SIZE; |