linux-kernel - [net PATCH] octeon_ep: fix tx dma unmap len values in SG

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Message-ID: <20230911092306.2132794-1-srasheed@marvell.com>
Date:   Mon, 11 Sep 2023 02:23:06 -0700
From:   Shinas Rasheed <srasheed@...vell.com>
To:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <hgani@...vell.com>
CC:     <vimleshk@...vell.com>, <mschmidt@...hat.com>,
        <egallen@...hat.com>, Shinas Rasheed <srasheed@...vell.com>,
        Veerasenareddy Burru <vburru@...vell.com>,
        Sathesh Edara <sedara@...vell.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Satananda Burla <sburla@...vell.com>,
        Abhijit Ayarekar <aayarekar@...vell.com>
Subject: [net PATCH] octeon_ep: fix tx dma unmap len values in SG

Lengths of SG pointers are in big-endian

Fixes: 37d79d059606 ("octeon_ep: add Tx/Rx processing and interrupt support")
Signed-off-by: Shinas Rasheed <srasheed@...vell.com>
---
 drivers/net/ethernet/marvell/octeon_ep/octep_tx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_tx.c b/drivers/net/ethernet/marvell/octeon_ep/octep_tx.c
index 5a520d37bea0..7e99486c274b 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_tx.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_tx.c
@@ -69,12 +69,12 @@ int octep_iq_process_completions(struct octep_iq *iq, u16 budget)
 		compl_sg++;
 
 		dma_unmap_single(iq->dev, tx_buffer->sglist[0].dma_ptr[0],
-				 tx_buffer->sglist[0].len[0], DMA_TO_DEVICE);
+				 tx_buffer->sglist[0].len[3], DMA_TO_DEVICE);
 
 		i = 1; /* entry 0 is main skb, unmapped above */
 		while (frags--) {
 			dma_unmap_page(iq->dev, tx_buffer->sglist[i >> 2].dma_ptr[i & 3],
-				       tx_buffer->sglist[i >> 2].len[i & 3], DMA_TO_DEVICE);
+				       tx_buffer->sglist[i >> 2].len[3 - (i & 3)], DMA_TO_DEVICE);
 			i++;
 		}
 
-- 
2.25.1