From: "Chen Jing D(Mark)" <jing.d.chen@intel.com>
To: dev@dpdk.org
Cc: shaopeng.he@intel.com
Subject: [dpdk-dev] [PATCH 3/6] fm10k: Fix data integrity issue with multi-segment frame
Date: Fri, 29 May 2015 16:10:41 +0800 [thread overview]
Message-ID: <1432887044-24777-4-git-send-email-jing.d.chen@intel.com> (raw)
In-Reply-To: <1432887044-24777-1-git-send-email-jing.d.chen@intel.com>
From: "Chen Jing D(Mark)" <jing.d.chen@intel.com>
In TX side, bit FM10K_TXD_FLAG_LAST in TX descriptor only is set
in the last descriptor for multi-segment packets. But current
implementation didn't set all the fields of TX descriptor, which
will cause descriptors processed now to re-use fields set in last
scroll. If FM10K_TXD_FLAG_LAST bit was set in the last round and
it happened this is not the last descriptor of a multi-segnment
packet, HW will send out the incomplete packet out and leads to
data intergrity issue.
Signed-off-by: Chen Jing D(Mark) <jing.d.chen@intel.com>
---
drivers/net/fm10k/fm10k_rxtx.c | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
index 56df6cd..f5d1ad0 100644
--- a/drivers/net/fm10k/fm10k_rxtx.c
+++ b/drivers/net/fm10k/fm10k_rxtx.c
@@ -402,9 +402,9 @@ static inline void tx_xmit_pkt(struct fm10k_tx_queue *q, struct rte_mbuf *mb)
q->nb_used = q->nb_used + mb->nb_segs;
}
- q->hw_ring[last_id].flags = flags;
q->nb_free -= mb->nb_segs;
+ q->hw_ring[q->next_free].flags = 0;
/* set checksum flags on first descriptor of packet. SCTP checksum
* offload is not supported, but we do not explicitly check for this
* case in favor of greatly simplified processing. */
@@ -415,16 +415,27 @@ static inline void tx_xmit_pkt(struct fm10k_tx_queue *q, struct rte_mbuf *mb)
if (mb->ol_flags & PKT_TX_VLAN_PKT)
q->hw_ring[q->next_free].vlan = mb->vlan_tci;
+ q->sw_ring[q->next_free] = mb;
+ q->hw_ring[q->next_free].buffer_addr =
+ rte_cpu_to_le_64(MBUF_DMA_ADDR(mb));
+ q->hw_ring[q->next_free].buflen =
+ rte_cpu_to_le_16(rte_pktmbuf_data_len(mb));
+ if (++q->next_free == q->nb_desc)
+ q->next_free = 0;
+
/* fill up the rings */
- for (; mb != NULL; mb = mb->next) {
+ for (mb = mb->next; mb != NULL; mb = mb->next) {
q->sw_ring[q->next_free] = mb;
q->hw_ring[q->next_free].buffer_addr =
rte_cpu_to_le_64(MBUF_DMA_ADDR(mb));
q->hw_ring[q->next_free].buflen =
rte_cpu_to_le_16(rte_pktmbuf_data_len(mb));
+ q->hw_ring[q->next_free].flags = 0;
if (++q->next_free == q->nb_desc)
q->next_free = 0;
}
+
+ q->hw_ring[last_id].flags = flags;
}
uint16_t
--
1.7.7.6
next prev parent reply other threads:[~2015-05-29 8:10 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-29 8:10 [dpdk-dev] [PATCH 0/6] fm10k: A series of bug fixes Chen Jing D(Mark)
2015-05-29 8:10 ` [dpdk-dev] [PATCH 1/6] fm10k: Fix improper RX buffer size assignment Chen Jing D(Mark)
2015-06-16 11:55 ` Qiu, Michael
2015-05-29 8:10 ` [dpdk-dev] [PATCH 2/6] fm10k: Fix jumbo frame issue Chen Jing D(Mark)
2015-06-12 1:15 ` Qiu, Michael
2015-05-29 8:10 ` Chen Jing D(Mark) [this message]
2015-06-16 12:07 ` [dpdk-dev] [PATCH 3/6] fm10k: Fix data integrity issue with multi-segment frame Qiu, Michael
2015-05-29 8:10 ` [dpdk-dev] [PATCH 4/6] fm10k: Fix issue that MAC addr can't be set to silicon Chen Jing D(Mark)
2015-06-09 16:23 ` Qiu, Michael
2015-06-10 5:34 ` Chen, Jing D
2015-06-12 2:03 ` Qiu, Michael
2015-05-29 8:10 ` [dpdk-dev] [PATCH 5/6] fm10k: Do sanity check on mac address Chen Jing D(Mark)
2015-06-16 12:08 ` Qiu, Michael
2015-05-29 8:10 ` [dpdk-dev] [PATCH 6/6] fm10k: Add default mac/vlan filter to SM Chen Jing D(Mark)
2015-06-08 2:39 ` [dpdk-dev] [PATCH 0/6] fm10k: A series of bug fixes He, Shaopeng
2015-06-09 15:21 ` Qiu, Michael
2015-06-22 13:55 ` Thomas Monjalon
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