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From: Rohan G Thomas via B4 Relay <devnull+rohan.g.thomas.altera.com@kernel.org>
To: Andrew Lunn <andrew+netdev@lunn.ch>,
	 "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	 Jakub Kicinski <kuba@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	 Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	 Alexandre Torgue <alexandre.torgue@foss.st.com>,
	 Jose Abreu <Jose.Abreu@synopsys.com>,
	 Rohan G Thomas <rohan.g.thomas@intel.com>
Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
	 linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	 Rohan G Thomas <rohan.g.thomas@altera.com>,
	 Matthew Gerlach <matthew.gerlach@altera.com>
Subject: [PATCH net 1/2] net: stmmac: est: Fix GCL bounds checks
Date: Thu, 11 Sep 2025 16:22:59 +0800	[thread overview]
Message-ID: <20250911-qbv-fixes-v1-1-e81e9597cf1f@altera.com> (raw)
In-Reply-To: <20250911-qbv-fixes-v1-0-e81e9597cf1f@altera.com>

From: Rohan G Thomas <rohan.g.thomas@intel.com>

Fix the bounds checks for the hw supported maximum GCL entry
count and gate interval time.

Fixes: b60189e0392f ("net: stmmac: Integrate EST with TAPRIO scheduler API")
Signed-off-by: Rohan G Thomas <rohan.g.thomas@intel.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altera.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 694d6ee1438197bd4434af6e9b78f022e94ff98f..89d094abb6be5c993c81901e3f79a6b03f310511 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -981,7 +981,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 	if (qopt->cmd == TAPRIO_CMD_DESTROY)
 		goto disable;
 
-	if (qopt->num_entries >= dep)
+	if (qopt->num_entries > dep)
 		return -EINVAL;
 	if (!qopt->cycle_time)
 		return -ERANGE;
@@ -1012,7 +1012,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv,
 		s64 delta_ns = qopt->entries[i].interval;
 		u32 gates = qopt->entries[i].gate_mask;
 
-		if (delta_ns > GENMASK(wid, 0))
+		if (delta_ns >= BIT(wid))
 			return -ERANGE;
 		if (gates > GENMASK(31 - wid, 0))
 			return -ERANGE;

-- 
2.25.1



  reply	other threads:[~2025-09-11  8:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-11  8:22 [PATCH net 0/2] net: stmmac: Minor fixes for stmmac EST implementation Rohan G Thomas via B4 Relay
2025-09-11  8:22 ` Rohan G Thomas via B4 Relay [this message]
2025-09-11 11:24   ` [PATCH net 1/2] net: stmmac: est: Fix GCL bounds checks Russell King (Oracle)
2025-09-11 12:42     ` G Thomas, Rohan
2025-09-12  0:01       ` Jakub Kicinski
2025-09-12  5:04         ` G Thomas, Rohan
2025-09-11  8:23 ` [PATCH net 2/2] net: stmmac: Consider Tx VLAN offload tag length for maxSDU Rohan G Thomas via B4 Relay

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