* [dpdk-stable] [PATCH] net/bnxt: fix headroom initialization
@ 2018-02-14 8:39 Olivier Matz
2018-02-14 10:26 ` Luca Boccassi
0 siblings, 1 reply; 2+ messages in thread
From: Olivier Matz @ 2018-02-14 8:39 UTC (permalink / raw)
To: stable, luca.boccassi
[ backported from upstream commit 35906acbf34daa32469fa63d759846057f36e6fb ]
When allocating a new mbuf for Rx, the value of m->data_off should not
be reset to its default value (RTE_PKTMBUF_HEADROOM), instead of reusing
the previous undefined value, which could cause the packet to have a too
small or too high headroom.
Fixes: 2eb53b134aae ("net/bnxt: add initial Rx code")
Cc: stable@dpdk.org
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
Hi Luca,
This patch is for the v16.11 stable branch.
Thanks,
Olivier
drivers/net/bnxt/bnxt_rxr.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
index 825337160..5698f02f3 100644
--- a/drivers/net/bnxt/bnxt_rxr.c
+++ b/drivers/net/bnxt/bnxt_rxr.c
@@ -72,7 +72,7 @@ static inline int bnxt_alloc_rx_data(struct bnxt_rx_queue *rxq,
rx_buf->mbuf = data;
- rxbd->addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR(rx_buf->mbuf));
+ rxbd->addr = rte_cpu_to_le_64(rte_mbuf_data_dma_addr_default(data));
return 0;
}
@@ -126,6 +126,7 @@ static uint16_t bnxt_rx_pkt(struct rte_mbuf **rx_pkt,
mbuf = rx_buf->mbuf;
rte_prefetch0(mbuf);
+ mbuf->data_off = RTE_PKTMBUF_HEADROOM;
mbuf->nb_segs = 1;
mbuf->next = NULL;
mbuf->pkt_len = rxcmp->len;
--
2.11.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-stable] [PATCH] net/bnxt: fix headroom initialization
2018-02-14 8:39 [dpdk-stable] [PATCH] net/bnxt: fix headroom initialization Olivier Matz
@ 2018-02-14 10:26 ` Luca Boccassi
0 siblings, 0 replies; 2+ messages in thread
From: Luca Boccassi @ 2018-02-14 10:26 UTC (permalink / raw)
To: Olivier Matz, stable
On Wed, 2018-02-14 at 09:39 +0100, Olivier Matz wrote:
> [ backported from upstream commit
> 35906acbf34daa32469fa63d759846057f36e6fb ]
>
> When allocating a new mbuf for Rx, the value of m->data_off should
> not
> be reset to its default value (RTE_PKTMBUF_HEADROOM), instead of
> reusing
> the previous undefined value, which could cause the packet to have a
> too
> small or too high headroom.
>
> Fixes: 2eb53b134aae ("net/bnxt: add initial Rx code")
> Cc: stable@dpdk.org
>
> Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
> Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
> ---
>
> Hi Luca,
>
> This patch is for the v16.11 stable branch.
>
> Thanks,
> Olivier
Thank you very much, applied&pushed.
--
Kind regards,
Luca Boccassi
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