netdev - [net-next PATCH v1 4/9] net: Move kernel helpers for queue index outside sysfs

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Message-ID: <169059163270.3736.8406876462323444663.stgit@anambiarhost.jf.intel.com>
Date: Fri, 28 Jul 2023 17:47:12 -0700
From: Amritha Nambiar <amritha.nambiar@...el.com>
To: netdev@...r.kernel.org, kuba@...nel.org, davem@...emloft.net
Cc: sridhar.samudrala@...el.com, amritha.nambiar@...el.com
Subject: [net-next PATCH v1 4/9] net: Move kernel helpers for queue index
 outside sysfs

The kernel helpers for retrieving tx/rx queue index
(get_netdev_queue_index and get_netdev_rx_queue_index)
are restricted to sysfs, move this out for more usability.
Also, replace BUG_ON with DEBUG_NET_WARN_ON_ONCE.

Signed-off-by: Amritha Nambiar <amritha.nambiar@...el.com>
---
 include/linux/netdevice.h |   16 +++++++++++++---
 net/core/net-sysfs.c      |   11 -----------
 2 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 7299872bfdff..7afbf346dfd1 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2515,6 +2515,18 @@ struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
 	return &dev->_tx[index];
 }
 
+static inline
+unsigned int get_netdev_queue_index(struct netdev_queue *queue)
+{
+	struct net_device *dev = queue->dev;
+	unsigned int i;
+
+	i = queue - dev->_tx;
+	DEBUG_NET_WARN_ON_ONCE(i >= dev->num_tx_queues);
+
+	return i;
+}
+
 static inline struct netdev_queue *skb_get_tx_queue(const struct net_device *dev,
 						    const struct sk_buff *skb)
 {
@@ -3856,17 +3868,15 @@ __netif_get_rx_queue(struct net_device *dev, unsigned int rxq)
 	return dev->_rx + rxq;
 }
 
-#ifdef CONFIG_SYSFS
 static inline unsigned int get_netdev_rx_queue_index(
 		struct netdev_rx_queue *queue)
 {
 	struct net_device *dev = queue->dev;
 	int index = queue - dev->_rx;
 
-	BUG_ON(index >= dev->num_rx_queues);
+	DEBUG_NET_WARN_ON_ONCE(index >= dev->num_rx_queues);
 	return index;
 }
-#endif
 
 int netif_get_num_default_rss_queues(void);
 
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 15e3f4606b5f..9b900d0b6513 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1239,17 +1239,6 @@ static ssize_t tx_timeout_show(struct netdev_queue *queue, char *buf)
 	return sysfs_emit(buf, fmt_ulong, trans_timeout);
 }
 
-static unsigned int get_netdev_queue_index(struct netdev_queue *queue)
-{
-	struct net_device *dev = queue->dev;
-	unsigned int i;
-
-	i = queue - dev->_tx;
-	BUG_ON(i >= dev->num_tx_queues);
-
-	return i;
-}
-
 static ssize_t traffic_class_show(struct netdev_queue *queue,
 				  char *buf)
 {