netdev - [RFC v1 19/22] eth: bnxt: use queue op config validate

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <376a52149021bb57bee0cc668582756654022b02.1753694914.git.asml.silence@gmail.com>
Date: Mon, 28 Jul 2025 12:04:23 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: Jakub Kicinski <kuba@...nel.org>,
	netdev@...r.kernel.org
Cc: asml.silence@...il.com,
	io-uring@...r.kernel.org,
	Eric Dumazet <edumazet@...gle.com>,
	Willem de Bruijn <willemb@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	davem@...emloft.net,
	sdf@...ichev.me,
	almasrymina@...gle.com,
	dw@...idwei.uk,
	michael.chan@...adcom.com,
	dtatulea@...dia.com,
	ap420073@...il.com
Subject: [RFC v1 19/22] eth: bnxt: use queue op config validate

From: Jakub Kicinski <kuba@...nel.org>

Move the rx-buf-len config validation to the queue ops.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c     | 40 +++++++++++++++++++
 .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 12 ------
 2 files changed, 40 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 017f08ca8d1d..5788518fe407 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -16139,8 +16139,46 @@ static int bnxt_queue_stop(struct net_device *dev, void *qmem, int idx)
 	return 0;
 }
 
+static int
+bnxt_queue_cfg_validate(struct net_device *dev, int idx,
+			struct netdev_queue_config *qcfg,
+			struct netlink_ext_ack *extack)
+{
+	struct bnxt *bp = netdev_priv(dev);
+
+	/* Older chips need MSS calc so rx_buf_len is not supported,
+	 * but we don't set queue ops for them so we should never get here.
+	 */
+	if (qcfg->rx_buf_len != bp->rx_page_size &&
+	    !(bp->flags & BNXT_FLAG_CHIP_P5_PLUS)) {
+		NL_SET_ERR_MSG_MOD(extack, "changing rx-buf-len not supported");
+		return -EINVAL;
+	}
+
+	if (!is_power_of_2(qcfg->rx_buf_len)) {
+		NL_SET_ERR_MSG_MOD(extack, "rx-buf-len is not power of 2");
+		return -ERANGE;
+	}
+	if (qcfg->rx_buf_len < BNXT_RX_PAGE_SIZE ||
+	    qcfg->rx_buf_len > BNXT_MAX_RX_PAGE_SIZE) {
+		NL_SET_ERR_MSG_MOD(extack, "rx-buf-len out of range");
+		return -ERANGE;
+	}
+	return 0;
+}
+
+static void
+bnxt_queue_cfg_defaults(struct net_device *dev, int idx,
+			struct netdev_queue_config *qcfg)
+{
+	qcfg->rx_buf_len	= BNXT_RX_PAGE_SIZE;
+}
+
 static const struct netdev_queue_mgmt_ops bnxt_queue_mgmt_ops = {
 	.ndo_queue_mem_size	= sizeof(struct bnxt_rx_ring_info),
+
+	.ndo_queue_cfg_defaults	= bnxt_queue_cfg_defaults,
+	.ndo_queue_cfg_validate = bnxt_queue_cfg_validate,
 	.ndo_queue_mem_alloc	= bnxt_queue_mem_alloc,
 	.ndo_queue_mem_free	= bnxt_queue_mem_free,
 	.ndo_queue_start	= bnxt_queue_start,
@@ -16148,6 +16186,8 @@ static const struct netdev_queue_mgmt_ops bnxt_queue_mgmt_ops = {
 };
 
 static const struct netdev_queue_mgmt_ops bnxt_queue_mgmt_ops_unsupp = {
+	.ndo_queue_cfg_defaults	= bnxt_queue_cfg_defaults,
+	.ndo_queue_cfg_validate = bnxt_queue_cfg_validate,
 };
 
 static void bnxt_remove_one(struct pci_dev *pdev)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 0e225414d463..38178051e0d3 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -867,18 +867,6 @@ static int bnxt_set_ringparam(struct net_device *dev,
 	if (!kernel_ering->rx_buf_len)	/* Zero means restore default */
 		kernel_ering->rx_buf_len = BNXT_RX_PAGE_SIZE;
 
-	if (kernel_ering->rx_buf_len != bp->rx_page_size &&
-	    !(bp->flags & BNXT_FLAG_CHIP_P5_PLUS)) {
-		NL_SET_ERR_MSG_MOD(extack, "changing rx-buf-len not supported");
-		return -EINVAL;
-	}
-	if (!is_power_of_2(kernel_ering->rx_buf_len) ||
-	    kernel_ering->rx_buf_len < BNXT_RX_PAGE_SIZE ||
-	    kernel_ering->rx_buf_len > BNXT_MAX_RX_PAGE_SIZE) {
-		NL_SET_ERR_MSG_MOD(extack, "rx-buf-len out of range, or not power of 2");
-		return -ERANGE;
-	}
-
 	if (netif_running(dev))
 		bnxt_close_nic(bp, false, false);
 
-- 
2.49.0