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From e5c04b1d1bc83115a2cc28615a5d5c6645c66cd4 Mon Sep 17 00:00:00 2001
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Message-Id: <e5c04b1d1bc83115a2cc28615a5d5c6645c66cd4.1524241750.git.dcaratti@redhat.com>
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In-Reply-To: <02bd8182658600ebf2cbe61168e80c19ce4cdaa5.1524241750.git.dcaratti@redhat.com>
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References: <02bd8182658600ebf2cbe61168e80c19ce4cdaa5.1524241750.git.dcaratti@redhat.com>
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From: Ajit Khaparde <ajit.khaparde@broadcom.com>
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Date: Fri, 20 Apr 2018 07:22:02 -0700
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Subject: [PATCH 3/3] net/bnxt: fix mbuf data offset initialization
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Initialize mbuf->data_off to RTE_PKTMBUF_HEADROOM after allocation.
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Without this, it might be possible that the DMA address provided
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to the HW may not be in sync to what is indicated to the application
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in bnxt_rx_pkt.
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Fixes: 2eb53b134aae ("net/bnxt: add initial Rx code")
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Cc: stable@dpdk.org
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Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
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---
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drivers/net/bnxt/bnxt_rxr.c | 2 ++
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1 file changed, 2 insertions(+)
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backport notes:
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- use data->data_off instead off mbuf->data_off, because we miss
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upstream commit 42b883535804 ("net/bnxt: use new API to get IOVA
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address")
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--- a/drivers/net/bnxt/bnxt_rxr.c
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+++ b/drivers/net/bnxt/bnxt_rxr.c
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@@ -74,6 +74,7 @@ static inline int bnxt_alloc_rx_data(str
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}
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rx_buf->mbuf = data;
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+ data->data_off = RTE_PKTMBUF_HEADROOM;
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rxbd->addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR(rx_buf->mbuf));
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@@ -101,6 +102,7 @@ static inline int bnxt_alloc_ag_data(str
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rx_buf->mbuf = data;
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+ data->data_off = RTE_PKTMBUF_HEADROOM;
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rxbd->addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR(rx_buf->mbuf));
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