bonding: warn user when 802.3ad speed is unknown

Goal is to advertise the user when ethtool speeds and 802.3ad speeds are
desynchronized.
When this case happens, the kernel needs to be patched.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index b44a6aeb346d0404144dde0304a502268de1da91..165a8009c640100c45d5022575bedb0c88af1a04 100644 (file)
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -322,6 +322,11 @@ static u16 __get_link_speed(struct port *port)
 
                default:
                        /* unknown speed value from ethtool. shouldn't happen */
+                       if (slave->speed != SPEED_UNKNOWN)
+                               pr_warn_once("%s: unknown ethtool speed (%d) for port %d (set it to 0)\n",
+                                            slave->bond->dev->name,
+                                            slave->speed,
+                                            port->actor_port_number);
                        speed = 0;
                        break;
                }