netdev - [PATCH 17/34]bnx2x: First slow path interrupt race

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-next>] [day] [month] [year] [list]

Message-ID: <1231951413.11301.138.camel@lb-tlvb-eliezer>
Date:	Wed, 14 Jan 2009 18:43:33 +0200
From:	"Eilon Greenstein" <eilong@...adcom.com>
To:	"David Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>
Subject: [PATCH 17/34]bnx2x: First slow path interrupt race

The "read for interrupts" flag must be set before enabling slow-path interrupts
as well (and not just before fast-path interrupts)

Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
---
 drivers/net/bnx2x_main.c |   18 +++++++++---------
 1 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index f4d3c23..c416772 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -4825,6 +4825,15 @@ static void bnx2x_nic_init(struct bnx2x *bp, u32 load_code)
 	bnx2x_init_context(bp);
 	bnx2x_init_internal(bp, load_code);
 	bnx2x_init_ind_table(bp);
+	bnx2x_stats_init(bp);
+
+	/* At this point, we are ready for interrupts */
+	atomic_set(&bp->intr_sem, 0);
+
+	/* flush all before enabling interrupts */
+	mb();
+	mmiowb();
+
 	bnx2x_int_enable(bp);
 }
 
@@ -6433,17 +6442,8 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 		}
 	}
 
-	bnx2x_stats_init(bp);
-
 	bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
 
-	/* Enable Rx interrupt handling before sending the ramrod
-	   as it's completed on Rx FP queue */
-	bnx2x_napi_enable(bp);
-
-	/* Enable interrupt handling */
-	atomic_set(&bp->intr_sem, 0);
-
 	rc = bnx2x_setup_leading(bp);
 	if (rc) {
 		BNX2X_ERR("Setup leading failed!\n");
-- 
1.5.4.3




--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html