From 042540e4effa5e0e739ce209aede4dcc7787100d Mon Sep 17 00:00:00 2001 From: Thomas Monjalon Date: Thu, 29 Oct 2020 04:14:59 +0100 Subject: [PATCH] net/mlx5: fix dynamic mbuf offset lookup check The functions rte_mbuf_dynfield_lookup() and rte_mbuf_dynflag_lookup() can return an offset starting with 0 or a negative error code. In reality the first offsets are probably reserved forever, but for the sake of strict API compliance, the checks which considered 0 as an error are fixed. Fixes: efa79e68c8cd ("net/mlx5: support fine grain dynamic flag") Fixes: 3172c471b86f ("net/mlx5: prepare Tx queue structures to support timestamp") Fixes: 0febfcce3693 ("net/mlx5: prepare Tx to support scheduling") Cc: stable@dpdk.org Signed-off-by: Thomas Monjalon Acked-by: Viacheslav Ovsiienko Acked-by: David Marchand Acked-by: Olivier Matz --- drivers/net/mlx5/mlx5_rxtx.c | 4 ++-- drivers/net/mlx5/mlx5_trigger.c | 2 +- drivers/net/mlx5/mlx5_txq.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c index b530ff421f..e86468b67a 100644 --- a/drivers/net/mlx5/mlx5_rxtx.c +++ b/drivers/net/mlx5/mlx5_rxtx.c @@ -5661,9 +5661,9 @@ mlx5_select_tx_function(struct rte_eth_dev *dev) } if (tx_offloads & DEV_TX_OFFLOAD_SEND_ON_TIMESTAMP && rte_mbuf_dynflag_lookup - (RTE_MBUF_DYNFLAG_TX_TIMESTAMP_NAME, NULL) > 0 && + (RTE_MBUF_DYNFLAG_TX_TIMESTAMP_NAME, NULL) >= 0 && rte_mbuf_dynfield_lookup - (RTE_MBUF_DYNFIELD_TIMESTAMP_NAME, NULL) > 0) { + (RTE_MBUF_DYNFIELD_TIMESTAMP_NAME, NULL) >= 0) { /* Offload configured, dynamic entities registered. */ olx |= MLX5_TXOFF_CONFIG_TXPP; } diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c index 7735f022a3..917b433c4a 100644 --- a/drivers/net/mlx5/mlx5_trigger.c +++ b/drivers/net/mlx5/mlx5_trigger.c @@ -302,7 +302,7 @@ mlx5_dev_start(struct rte_eth_dev *dev) DRV_LOG(DEBUG, "port %u starting device", dev->data->port_id); fine_inline = rte_mbuf_dynflag_lookup (RTE_PMD_MLX5_FINE_GRANULARITY_INLINE, NULL); - if (fine_inline > 0) + if (fine_inline >= 0) rte_net_mlx5_dynf_inline_mask = 1UL << fine_inline; else rte_net_mlx5_dynf_inline_mask = 0; diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c index af84f5f72b..8ed2bcff7b 100644 --- a/drivers/net/mlx5/mlx5_txq.c +++ b/drivers/net/mlx5/mlx5_txq.c @@ -1305,7 +1305,7 @@ mlx5_txq_dynf_timestamp_set(struct rte_eth_dev *dev) (RTE_MBUF_DYNFLAG_TX_TIMESTAMP_NAME, NULL); off = rte_mbuf_dynfield_lookup (RTE_MBUF_DYNFIELD_TIMESTAMP_NAME, NULL); - if (nbit > 0 && off >= 0 && sh->txpp.refcnt) + if (nbit >= 0 && off >= 0 && sh->txpp.refcnt) mask = 1ULL << nbit; for (i = 0; i != priv->txqs_n; ++i) { data = (*priv->txqs)[i]; -- 2.20.1