[dpdk-dev] [PATCHv2 2/2] ixgbe: fix vector scatter RX could produce wrong nb_segs value

Konstantin Ananyev konstantin.ananyev at intel.com
Tue Jul 28 13:39:23 CEST 2015


Fixes: cf4b4708a88a (ixgbe: improve slow-path perf with vector scattered Rx)

v2: changes:
- updated commit message with 'Fixes'.

Signed-off-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx_vec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec.c b/drivers/net/ixgbe/ixgbe_rxtx_vec.c
index 6c1647e..1c16dec 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx_vec.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx_vec.c
@@ -497,6 +497,8 @@ reassemble_packets(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_bufs,
 				else {
 					/* free up last mbuf */
 					struct rte_mbuf *secondlast = start;
+
+					start->nb_segs--;
 					while (secondlast->next != end)
 						secondlast = secondlast->next;
 					secondlast->data_len -= (rxq->crc_len -
-- 
1.8.3.1



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