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tg3: Add a warning during link settings change if mgmt enabled

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When the user executes certain ethtool commands such as -s, -A, -G, -L,
-r a phy reset or autonegotiate is performed which results in management
traffic being interrupted.

Add a warning in these cases.

Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nithin Sujir 2013-04-09 08:48:04 +00:00 committed by David S. Miller
parent f1315d2052
commit ce20f1613b
1 changed files with 14 additions and 0 deletions
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14
drivers/net/ethernet/broadcom/tg3.c
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@ -2531,6 +2531,13 @@ static void tg3_carrier_off(struct tg3 *tp)
tp->link_up = false;
}
static void tg3_warn_mgmt_link_flap(struct tg3 *tp)
{
if (tg3_flag(tp, ENABLE_ASF))
netdev_warn(tp->dev,
"Management side-band traffic will be interrupted during phy settings change\n");
}
/* This will reset the tigon3 PHY if there is no valid
* link unless the FORCE argument is non-zero.
*/
@ -11565,6 +11572,8 @@ static int tg3_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
tp->link_config.duplex = cmd->duplex;
}
tg3_warn_mgmt_link_flap(tp);
if (netif_running(dev))
tg3_setup_phy(tp, 1);
@ -11643,6 +11652,8 @@ static int tg3_nway_reset(struct net_device *dev)
if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
return -EINVAL;
tg3_warn_mgmt_link_flap(tp);
if (tg3_flag(tp, USE_PHYLIB)) {
if (!(tp->phy_flags & TG3_PHYFLG_IS_CONNECTED))
return -EAGAIN;
@ -11755,6 +11766,9 @@ static int tg3_set_pauseparam(struct net_device *dev, struct ethtool_pauseparam
struct tg3 *tp = netdev_priv(dev);
int err = 0;
if (tp->link_config.autoneg == AUTONEG_ENABLE)
tg3_warn_mgmt_link_flap(tp);
if (tg3_flag(tp, USE_PHYLIB)) {
u32 newadv;
struct phy_device *phydev;