[dpdk-stable] [PATCH 20/67] net/mlx5: mark parameters with unused attribute

[Yongseok Koh <yskoh@mellanox.com>]

From: Nélio Laranjeiro <nelio.laranjeiro@6wind.com>

[ backported from upstream commit 56f08e1671f99a15cf6b00027c2f7d81d69c4f5f ]

Replaces all (void)foo; by __rte_unused macro except when variables are
under #if statements.

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
 drivers/net/mlx5/mlx5.c         |  4 ++--
 drivers/net/mlx5/mlx5_ethdev.c  | 18 ++++++----------
 drivers/net/mlx5/mlx5_flow.c    | 25 ++++++++--------------
 drivers/net/mlx5/mlx5_mac.c     |  3 +--
 drivers/net/mlx5/mlx5_mr.c      | 10 +++------
 drivers/net/mlx5/mlx5_rxq.c     |  8 +++----
 drivers/net/mlx5/mlx5_rxtx.c    | 47 +++++++++++++++++------------------------
 drivers/net/mlx5/mlx5_stats.c   |  2 +-
 drivers/net/mlx5/mlx5_trigger.c |  4 ++--
 drivers/net/mlx5/mlx5_txq.c     | 19 +++++++----------
 10 files changed, 55 insertions(+), 85 deletions(-)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index c3d57c58c..efcf86ba4 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -646,7 +646,8 @@ mlx5_args_assign(struct priv *priv, struct mlx5_args *args)
  *   0 on success, negative errno value on failure.
  */
 static int
-mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
+mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+	       struct rte_pci_device *pci_dev)
 {
 	struct ibv_device **list;
 	struct ibv_device *ibv_dev;
@@ -663,7 +664,6 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 	struct ibv_counter_set_description cs_desc;
 #endif
 
-	(void)pci_drv;
 	assert(pci_drv == &mlx5_driver);
 	/* Get mlx5_dev[] index. */
 	idx = mlx5_dev_idx(&pci_dev->addr);
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index f9f04ec6d..0266a4fe5 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -492,11 +492,9 @@ mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
  *
  * @param dev
  *   Pointer to Ethernet device structure.
- * @param wait_to_complete
- *   Wait for request completion (ignored).
  */
 static int
-mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
+mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev)
 {
 	struct priv *priv = dev->data->dev_private;
 	struct ethtool_cmd edata = {
@@ -508,7 +506,6 @@ mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
 
 	/* priv_lock() is not taken to allow concurrent calls. */
 
-	(void)wait_to_complete;
 	if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 		WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 		return -1;
@@ -558,11 +555,9 @@ mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
  *
  * @param dev
  *   Pointer to Ethernet device structure.
- * @param wait_to_complete
- *   Wait for request completion (ignored).
  */
 static int
-mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
+mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev)
 {
 	struct priv *priv = dev->data->dev_private;
 	struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
@@ -570,7 +565,6 @@ mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
 	struct rte_eth_link dev_link;
 	uint64_t sc;
 
-	(void)wait_to_complete;
 	if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 		WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 		return -1;
@@ -700,7 +694,7 @@ priv_link_stop(struct priv *priv)
  *   Wait for request completion (ignored).
  */
 int
-priv_link_update(struct priv *priv, int wait_to_complete)
+priv_link_update(struct priv *priv, int wait_to_complete __rte_unused)
 {
 	struct rte_eth_dev *dev = priv->dev;
 	struct utsname utsname;
@@ -712,9 +706,9 @@ priv_link_update(struct priv *priv, int wait_to_complete)
 	    sscanf(utsname.release, "%d.%d.%d",
 		   &ver[0], &ver[1], &ver[2]) != 3 ||
 	    KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
-		ret = mlx5_link_update_unlocked_gset(dev, wait_to_complete);
+		ret = mlx5_link_update_unlocked_gset(dev);
 	else
-		ret = mlx5_link_update_unlocked_gs(dev, wait_to_complete);
+		ret = mlx5_link_update_unlocked_gs(dev);
 	/* If lsc interrupt is disabled, should always be ready for traffic. */
 	if (!dev->data->dev_conf.intr_conf.lsc) {
 		priv_link_start(priv);
@@ -766,7 +760,7 @@ priv_force_link_status_change(struct priv *priv, int status)
  *   Wait for request completion (ignored).
  */
 int
-mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
+mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 {
 	struct priv *priv = dev->data->dev_private;
 	int ret;
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 76c4354bb..0103d9342 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -565,7 +565,7 @@ mlx5_flow_item_validate(const struct rte_flow_item *item,
  *   0 on success, errno value on failure.
  */
 static int
-priv_flow_convert_rss_conf(struct priv *priv,
+priv_flow_convert_rss_conf(struct priv *priv __rte_unused,
 			   struct mlx5_flow_parse *parser,
 			   const struct rte_eth_rss_conf *rss_conf)
 {
@@ -574,7 +574,6 @@ priv_flow_convert_rss_conf(struct priv *priv,
 	 * priv_flow_convert_actions() to initialize the parser with the
 	 * device default RSS configuration.
 	 */
-	(void)priv;
 	if (rss_conf) {
 		if (rss_conf->rss_hf & MLX5_RSS_HF_MASK)
 			return EINVAL;
@@ -607,13 +606,11 @@ priv_flow_convert_rss_conf(struct priv *priv,
  *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 static int
-priv_flow_convert_attributes(struct priv *priv,
+priv_flow_convert_attributes(struct priv *priv __rte_unused,
 			     const struct rte_flow_attr *attr,
 			     struct rte_flow_error *error,
-			     struct mlx5_flow_parse *parser)
+			     struct mlx5_flow_parse *parser __rte_unused)
 {
-	(void)priv;
-	(void)parser;
 	if (attr->group) {
 		rte_flow_error_set(error, ENOTSUP,
 				   RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
@@ -818,7 +815,7 @@ priv_flow_convert_actions(struct priv *priv,
  *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 static int
-priv_flow_convert_items_validate(struct priv *priv,
+priv_flow_convert_items_validate(struct priv *priv __rte_unused,
 				 const struct rte_flow_item items[],
 				 struct rte_flow_error *error,
 				 struct mlx5_flow_parse *parser)
@@ -826,7 +823,6 @@ priv_flow_convert_items_validate(struct priv *priv,
 	const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 	unsigned int i;
 
-	(void)priv;
 	/* Initialise the offsets to start after verbs attribute. */
 	for (i = 0; i != hash_rxq_init_n; ++i)
 		parser->queue[i].offset = sizeof(struct ibv_flow_attr);
@@ -910,14 +906,13 @@ priv_flow_convert_items_validate(struct priv *priv,
  *   A verbs flow attribute on success, NULL otherwise.
  */
 static struct ibv_flow_attr*
-priv_flow_convert_allocate(struct priv *priv,
+priv_flow_convert_allocate(struct priv *priv __rte_unused,
 			   unsigned int priority,
 			   unsigned int size,
 			   struct rte_flow_error *error)
 {
 	struct ibv_flow_attr *ibv_attr;
 
-	(void)priv;
 	ibv_attr = rte_calloc(__func__, 1, size, 0);
 	if (!ibv_attr) {
 		rte_flow_error_set(error, ENOMEM,
@@ -939,7 +934,8 @@ priv_flow_convert_allocate(struct priv *priv,
  *   Internal parser structure.
  */
 static void
-priv_flow_convert_finalise(struct priv *priv, struct mlx5_flow_parse *parser)
+priv_flow_convert_finalise(struct priv *priv __rte_unused,
+			   struct mlx5_flow_parse *parser)
 {
 	const unsigned int ipv4 =
 		hash_rxq_init[parser->layer].ip_version == MLX5_IPV4;
@@ -950,7 +946,6 @@ priv_flow_convert_finalise(struct priv *priv, struct mlx5_flow_parse *parser)
 	const enum hash_rxq_type ip = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
 	unsigned int i;
 
-	(void)priv;
 	/* Remove any other flow not matching the pattern. */
 	if (parser->queues_n == 1) {
 		for (i = 0; i != hash_rxq_init_n; ++i) {
@@ -2445,11 +2440,10 @@ mlx5_ctrl_flow(struct rte_eth_dev *dev,
 int
 mlx5_flow_destroy(struct rte_eth_dev *dev,
 		  struct rte_flow *flow,
-		  struct rte_flow_error *error)
+		  struct rte_flow_error *error __rte_unused)
 {
 	struct priv *priv = dev->data->dev_private;
 
-	(void)error;
 	priv_lock(priv);
 	priv_flow_destroy(priv, &priv->flows, flow);
 	priv_unlock(priv);
@@ -2464,11 +2458,10 @@ mlx5_flow_destroy(struct rte_eth_dev *dev,
  */
 int
 mlx5_flow_flush(struct rte_eth_dev *dev,
-		struct rte_flow_error *error)
+		struct rte_flow_error *error __rte_unused)
 {
 	struct priv *priv = dev->data->dev_private;
 
-	(void)error;
 	priv_lock(priv);
 	priv_flow_flush(priv, &priv->flows);
 	priv_unlock(priv);
diff --git a/drivers/net/mlx5/mlx5_mac.c b/drivers/net/mlx5/mlx5_mac.c
index 3ad21c000..8e7b098ae 100644
--- a/drivers/net/mlx5/mlx5_mac.c
+++ b/drivers/net/mlx5/mlx5_mac.c
@@ -116,12 +116,11 @@ mlx5_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
  */
 int
 mlx5_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac,
-		  uint32_t index, uint32_t vmdq)
+		  uint32_t index, uint32_t vmdq __rte_unused)
 {
 	unsigned int i;
 	int ret = 0;
 
-	(void)vmdq;
 	assert(index < MLX5_MAX_MAC_ADDRESSES);
 	/* First, make sure this address isn't already configured. */
 	for (i = 0; (i != MLX5_MAX_MAC_ADDRESSES); ++i) {
diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c
index 33d037d28..0bf65ec0e 100644
--- a/drivers/net/mlx5/mlx5_mr.c
+++ b/drivers/net/mlx5/mlx5_mr.c
@@ -55,15 +55,12 @@ struct mlx5_check_mempool_data {
 
 /* Called by mlx5_check_mempool() when iterating the memory chunks. */
 static void
-mlx5_check_mempool_cb(struct rte_mempool *mp,
+mlx5_check_mempool_cb(struct rte_mempool *mp __rte_unused,
 		      void *opaque, struct rte_mempool_memhdr *memhdr,
-		      unsigned int mem_idx)
+		      unsigned int mem_idx __rte_unused)
 {
 	struct mlx5_check_mempool_data *data = opaque;
 
-	(void)mp;
-	(void)mem_idx;
-
 	/* It already failed, skip the next chunks. */
 	if (data->ret != 0)
 		return;
@@ -365,9 +362,8 @@ priv_mr_get(struct priv *priv, struct rte_mempool *mp)
  *   0 on success, errno on failure.
  */
 int
-priv_mr_release(struct priv *priv, struct mlx5_mr *mr)
+priv_mr_release(struct priv *priv __rte_unused, struct mlx5_mr *mr)
 {
-	(void)priv;
 	assert(mr);
 	DEBUG("Memory Region %p refcnt: %d",
 	      (void *)mr, rte_atomic32_read(&mr->refcnt));
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 457f919b4..342dad18b 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -232,7 +232,8 @@ mlx5_rxq_cleanup(struct mlx5_rxq_ctrl *rxq_ctrl)
  */
 int
 mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
-		    unsigned int socket, const struct rte_eth_rxconf *conf,
+		    unsigned int socket,
+		    const struct rte_eth_rxconf *conf __rte_unused,
 		    struct rte_mempool *mp)
 {
 	struct priv *priv = dev->data->dev_private;
@@ -241,7 +242,6 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 		container_of(rxq, struct mlx5_rxq_ctrl, rxq);
 	int ret = 0;
 
-	(void)conf;
 	priv_lock(priv);
 	if (!rte_is_power_of_2(desc)) {
 		desc = 1 << log2above(desc);
@@ -854,9 +854,9 @@ mlx5_priv_rxq_ibv_verify(struct priv *priv)
  *   Verbs Rx queue object.
  */
 int
-mlx5_priv_rxq_ibv_releasable(struct priv *priv, struct mlx5_rxq_ibv *rxq_ibv)
+mlx5_priv_rxq_ibv_releasable(struct priv *priv __rte_unused,
+			     struct mlx5_rxq_ibv *rxq_ibv)
 {
-	(void)priv;
 	assert(rxq_ibv);
 	return (rte_atomic32_read(&rxq_ibv->refcnt) == 1);
 }
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 9955faedf..40a271a68 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1975,11 +1975,10 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
  *   Number of packets successfully transmitted (<= pkts_n).
  */
 uint16_t
-removed_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
+removed_tx_burst(void *dpdk_txq __rte_unused,
+		 struct rte_mbuf **pkts __rte_unused,
+		 uint16_t pkts_n __rte_unused)
 {
-	(void)dpdk_txq;
-	(void)pkts;
-	(void)pkts_n;
 	return 0;
 }
 
@@ -2000,11 +1999,10 @@ removed_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
  *   Number of packets successfully received (<= pkts_n).
  */
 uint16_t
-removed_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
+removed_rx_burst(void *dpdk_txq __rte_unused,
+		 struct rte_mbuf **pkts __rte_unused,
+		 uint16_t pkts_n __rte_unused)
 {
-	(void)dpdk_rxq;
-	(void)pkts;
-	(void)pkts_n;
 	return 0;
 }
 
@@ -2016,56 +2014,49 @@ removed_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
  */
 
 uint16_t __attribute__((weak))
-mlx5_tx_burst_raw_vec(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
+mlx5_tx_burst_raw_vec(void *dpdk_txq __rte_unused,
+		      struct rte_mbuf **pkts __rte_unused,
+		      uint16_t pkts_n __rte_unused)
 {
-	(void)dpdk_txq;
-	(void)pkts;
-	(void)pkts_n;
 	return 0;
 }
 
 uint16_t __attribute__((weak))
-mlx5_tx_burst_vec(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
+mlx5_tx_burst_vec(void *dpdk_txq __rte_unused,
+		  struct rte_mbuf **pkts __rte_unused,
+		  uint16_t pkts_n __rte_unused)
 {
-	(void)dpdk_txq;
-	(void)pkts;
-	(void)pkts_n;
 	return 0;
 }
 
 uint16_t __attribute__((weak))
-mlx5_rx_burst_vec(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
+mlx5_rx_burst_vec(void *dpdk_txq __rte_unused,
+		  struct rte_mbuf **pkts __rte_unused,
+		  uint16_t pkts_n __rte_unused)
 {
-	(void)dpdk_rxq;
-	(void)pkts;
-	(void)pkts_n;
 	return 0;
 }
 
 int __attribute__((weak))
-priv_check_raw_vec_tx_support(struct priv *priv)
+priv_check_raw_vec_tx_support(struct priv *priv __rte_unused)
 {
-	(void)priv;
 	return -ENOTSUP;
 }
 
 int __attribute__((weak))
-priv_check_vec_tx_support(struct priv *priv)
+priv_check_vec_tx_support(struct priv *priv __rte_unused)
 {
-	(void)priv;
 	return -ENOTSUP;
 }
 
 int __attribute__((weak))
-rxq_check_vec_support(struct mlx5_rxq_data *rxq)
+rxq_check_vec_support(struct mlx5_rxq_data *rxq __rte_unused)
 {
-	(void)rxq;
 	return -ENOTSUP;
 }
 
 int __attribute__((weak))
-priv_check_vec_rx_support(struct priv *priv)
+priv_check_vec_rx_support(struct priv *priv __rte_unused)
 {
-	(void)priv;
 	return -ENOTSUP;
 }
diff --git a/drivers/net/mlx5/mlx5_stats.c b/drivers/net/mlx5/mlx5_stats.c
index 7943c4c3f..50e3ea5f2 100644
--- a/drivers/net/mlx5/mlx5_stats.c
+++ b/drivers/net/mlx5/mlx5_stats.c
@@ -500,7 +500,7 @@ mlx5_xstats_reset(struct rte_eth_dev *dev)
  *   Number of xstats names.
  */
 int
-mlx5_xstats_get_names(struct rte_eth_dev *dev,
+mlx5_xstats_get_names(struct rte_eth_dev *dev __rte_unused,
 		struct rte_eth_xstat_name *xstats_names, unsigned int n)
 {
 	struct priv *priv = dev->data->dev_private;
diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c
index da9494eb8..2d9bb86ea 100644
--- a/drivers/net/mlx5/mlx5_trigger.c
+++ b/drivers/net/mlx5/mlx5_trigger.c
@@ -367,9 +367,9 @@ priv_dev_traffic_enable(struct priv *priv, struct rte_eth_dev *dev)
  *   0 on success.
  */
 int
-priv_dev_traffic_disable(struct priv *priv, struct rte_eth_dev *dev)
+priv_dev_traffic_disable(struct priv *priv,
+			 struct rte_eth_dev *dev __rte_unused)
 {
-	(void)dev;
 	priv_flow_flush(priv, &priv->ctrl_flows);
 	return 0;
 }
diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index f39b98a9a..a1c3e9d83 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -511,9 +511,9 @@ mlx5_priv_txq_ibv_get(struct priv *priv, uint16_t idx)
  *   0 on success, errno on failure.
  */
 int
-mlx5_priv_txq_ibv_release(struct priv *priv, struct mlx5_txq_ibv *txq_ibv)
+mlx5_priv_txq_ibv_release(struct priv *priv __rte_unused,
+			  struct mlx5_txq_ibv *txq_ibv)
 {
-	(void)priv;
 	assert(txq_ibv);
 	DEBUG("%p: Verbs Tx queue %p: refcnt %d", (void *)priv,
 	      (void *)txq_ibv, rte_atomic32_read(&txq_ibv->refcnt));
@@ -536,9 +536,9 @@ mlx5_priv_txq_ibv_release(struct priv *priv, struct mlx5_txq_ibv *txq_ibv)
  *   Verbs Tx queue object.
  */
 int
-mlx5_priv_txq_ibv_releasable(struct priv *priv, struct mlx5_txq_ibv *txq_ibv)
+mlx5_priv_txq_ibv_releasable(struct priv *priv __rte_unused,
+			     struct mlx5_txq_ibv *txq_ibv)
 {
-	(void)priv;
 	assert(txq_ibv);
 	return (rte_atomic32_read(&txq_ibv->refcnt) == 1);
 }
@@ -707,13 +707,10 @@ mlx5_priv_txq_get(struct priv *priv, uint16_t idx)
 
 		mlx5_priv_txq_ibv_get(priv, idx);
 		for (i = 0; i != MLX5_PMD_TX_MP_CACHE; ++i) {
-			struct mlx5_mr *mr = NULL;
-
-			(void)mr;
-			if (ctrl->txq.mp2mr[i]) {
-				mr = priv_mr_get(priv, ctrl->txq.mp2mr[i]->mp);
-				assert(mr);
-			}
+			if (ctrl->txq.mp2mr[i])
+				claim_nonzero
+					(priv_mr_get(priv,
+						     ctrl->txq.mp2mr[i]->mp));
 		}
 		rte_atomic32_inc(&ctrl->refcnt);
 		DEBUG("%p: Tx queue %p: refcnt %d", (void *)priv,
-- 
2.11.0