linux-kernel - [PATCH v2 4/4] net: ethernet: ti: cpsw_ale: optimize cpsw_ale

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <20221121142300.9320-5-rogerq@kernel.org>
Date:   Mon, 21 Nov 2022 16:23:00 +0200
From:   Roger Quadros <rogerq@...nel.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     edumazet@...gle.com, pabeni@...hat.com, vigneshr@...com,
        linux-omap@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Roger Quadros <rogerq@...nel.org>
Subject: [PATCH v2 4/4] net: ethernet: ti: cpsw_ale: optimize cpsw_ale_restore()

If an entry was FREE then we don't have to restore it.
This will make the restore faster in most cases.

Signed-off-by: Roger Quadros <rogerq@...nel.org>
---
 drivers/net/ethernet/ti/cpsw_ale.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 0c5e783e574c..41bcf34a22f8 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c
@@ -1452,12 +1452,15 @@ void cpsw_ale_dump(struct cpsw_ale *ale, u32 *data)
 	}
 }
 
+/* ALE table should be cleared (ALE_CLEAR) before cpsw_ale_restore() */
 void cpsw_ale_restore(struct cpsw_ale *ale, u32 *data)
 {
-	int i;
+	int i, type;
 
 	for (i = 0; i < ale->params.ale_entries; i++) {
-		cpsw_ale_write(ale, i, data);
+		type = cpsw_ale_get_entry_type(data);
+		if (type != ALE_TYPE_FREE)
+			cpsw_ale_write(ale, i, data);
 		data += ALE_ENTRY_WORDS;
 	}
 }
-- 
2.17.1