[PATCH v4 1/4] net/mlx5: fix num seg assumption on vPMD
From: Shahaf Shuler <hidden>
Date: 2017-09-13 10:50:36
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
vPMD Tx function assumes that after the scatter of the
multi-segment packets the next packet will be a single segment packet.
This is not current as the function can return due to lack of resources
without sending all of the multi-segment mbufs sequence.
Fixes: 6cb559d67b83 ("net/mlx5: add vectorized Rx/Tx burst for x86")
Cc: stable@dpdk.org
Cc: yskoh@mellanox.com
Signed-off-by: Shahaf Shuler <redacted>
Acked-by: Yongseok Koh <redacted>
Acked-by: Nelio Laranjeiro <redacted>
---
drivers/net/mlx5/mlx5_rxtx_vec_sse.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_sse.c b/drivers/net/mlx5/mlx5_rxtx_vec_sse.c
index 37854a73b..f89762ff8 100644
--- a/drivers/net/mlx5/mlx5_rxtx_vec_sse.c
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_sse.c@@ -112,8 +112,7 @@ txq_wr_dseg_v(struct txq *txq, __m128i *dseg, } /** - * Count the number of continuous single segment packets. The first packet must - * be a single segment packet. + * Count the number of continuous single segment packets. * * @param pkts * Pointer to array of packets.
@@ -130,9 +129,8 @@ txq_check_multiseg(struct rte_mbuf **pkts, uint16_t pkts_n) if (!pkts_n) return 0; - assert(NB_SEGS(pkts[0]) == 1); /* Count the number of continuous single segment packets. */ - for (pos = 1; pos < pkts_n; ++pos) + for (pos = 0; pos < pkts_n; ++pos) if (NB_SEGS(pkts[pos]) > 1) break; return pos;
--
2.12.0