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Message-Id: <20190503130311.9914-1-laurentiu.tudor@nxp.com> Date: Fri, 3 May 2019 16:03:11 +0300 From: laurentiu.tudor@....com To: netdev@...r.kernel.org, madalin.bucur@....com, camelia.groza@....com, leoyang.li@....com Cc: Joakim.Tjernlund@...inera.com, davem@...emloft.net, linux-arm-kernel@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org, Laurentiu Tudor <laurentiu.tudor@....com>, stable@...r.kernel.org Subject: [PATCH v3] dpaa_eth: fix SG frame cleanup From: Laurentiu Tudor <laurentiu.tudor@....com> Fix issue with the entry indexing in the sg frame cleanup code being off-by-1. This problem showed up when doing some basic iperf tests and manifested in traffic coming to a halt. Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com> Acked-by: Madalin Bucur <madalin.bucur@....com> Cc: <stable@...r.kernel.org> --- v3: - added cc:stable tag (Joakim) - pulled from the original patch series and send individually drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c index daede7272768..40420edc9ce6 100644 --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c @@ -1663,7 +1663,7 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv, qm_sg_entry_get_len(&sgt[0]), dma_dir); /* remaining pages were mapped with skb_frag_dma_map() */ - for (i = 1; i < nr_frags; i++) { + for (i = 1; i <= nr_frags; i++) { WARN_ON(qm_sg_entry_is_ext(&sgt[i])); dma_unmap_page(dev, qm_sg_addr(&sgt[i]), -- 2.17.1
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