netdev - [RFC PATCH] net: mvpp2: fix detection of 10G SFP modules

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]

Date:   Thu, 29 Nov 2018 14:49:50 +0200
From:   Baruch Siach <baruch@...s.co.il>
To:     Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org
Cc:     Baruch Siach <baruch@...s.co.il>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>,
        Antoine Tenart <antoine.tenart@...tlin.com>
Subject: [RFC PATCH] net: mvpp2: fix detection of 10G SFP modules

The mvpp2_phylink_validate() relies on the interface field of
phylink_link_state to determine valid link modes. However, when called
from phylink_sfp_module_insert() this field in not initialized. The
default switch case then excludes 10G link modes. This allows 10G SFP
modules that are detected correctly to be configured at max rate of
2.5G.

Catch the uninitialized PHY mode case, and allow 10G rates.

Cc: Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: Antoine Tenart <antoine.tenart@...tlin.com>
Signed-off-by: Baruch Siach <baruch@...s.co.il>
---
Is that the right fix?
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 7a37a37e3fb3..eb1dc8abc359 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -4384,6 +4384,7 @@ static void mvpp2_phylink_validate(struct net_device *dev,
 
 	switch (state->interface) {
 	case PHY_INTERFACE_MODE_10GKR:
+	case PHY_INTERFACE_MODE_NA:
 		phylink_set(mask, 10000baseCR_Full);
 		phylink_set(mask, 10000baseSR_Full);
 		phylink_set(mask, 10000baseLR_Full);
-- 
2.19.2