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Commit 99b61ce7 authored by Ganesh Goudar's avatar Ganesh Goudar Committed by Greg Kroah-Hartman
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cxgb4: when disabling dcb set txq dcb priority to 0 



[ Upstream commit 5ce36338a30f9814fc4824f9fe6c20cd83d872c7 ]

When we are disabling DCB, store "0" in txq->dcb_prio
since that's used for future TX Work Request "OVLAN_IDX"
values. Setting non zero priority upon disabling DCB
would halt the traffic.

Reported-by: default avatarAMG Zollner Robert <robert@cloudmedia.eu>
CC: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: default avatarCasey Leedom <leedom@chelsio.com>
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <alexander.levin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f1630f80

drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c

+1 −1
Original line number Diff line number Diff line
@@ -529,7 +529,7 @@ static void dcb_tx_queue_prio_enable(struct net_device *dev, int enable) 
				"Can't %s DCB Priority on port %d, TX Queue %d: err=%d\n",

				enable ? "set" : "unset", pi->port_id, i, -err);

		else

			txq->dcb_prio = value;

			txq->dcb_prio = enable ? value : 0;

	}

}

#endif /* CONFIG_CHELSIO_T4_DCB */