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Message-ID: <20120501095423.4039457a@s6510.linuxnetplumber.net> Date: Tue, 1 May 2012 09:54:23 -0700 From: Stephen Hemminger <shemminger@...tta.com> To: Michele Cucchi <cucchimichele@...cali.it> Cc: Mirko Lindner <mlindner@...vell.com>, netdev@...r.kernel.org Subject: Re: [PATCH 1/1] sky2: fix YUKON FE+ rev. A0, ingress VLAN tagged frame problem On Tue, 1 May 2012 17:49:00 +0200 Michele Cucchi <cucchimichele@...cali.it> wrote: > The cards based on chip YUKON FE+ revision A0, fails to correctly receive VLAN tagged frames. The ingress frames stays on raw physical interface and don't reach VLANS allocated interfaces. > The problem is the double call of __vlan_hwaccel_put_tag function, one in the sky2_skb_rx function and the other in the vlans global function vlan_untag. > Adding a check of card version and revision in the sky2_skb_rx function allow to skip the first time call of __vlan_hwaccel_put_tag and to fix the problem. > > This fix is tested on 3.4-rc5. > > Signed-off-by: Michele Cucchi <cucchimichele@...cali.it> > --- > drivers/net/ethernet/marvell/sky2.c | 5 ++++- > 1 files changed, 4 insertions(+), 1 deletions(-) > > diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c > index c9b504e..2be0351 100644 > --- a/drivers/net/ethernet/marvell/sky2.c > +++ b/drivers/net/ethernet/marvell/sky2.c > @@ -2649,7 +2649,10 @@ static inline void sky2_tx_done(struct net_device *dev, u16 last) > static inline void sky2_skb_rx(const struct sky2_port *sky2, > u32 status, struct sk_buff *skb) > { > - if (status & GMR_FS_VLAN) > + /* Workaround for YUKON FE+ rev. A0, vlan untag problem */ > + if ((status & GMR_FS_VLAN) && > + (!(sky2->hw->chip_id == CHIP_ID_YUKON_FE_P && > + sky2->hw->chip_rev == CHIP_REV_YU_FE2_A0))) > __vlan_hwaccel_put_tag(skb, be16_to_cpu(sky2->rx_tag)); > > if (skb->ip_summed == CHECKSUM_NONE) A better solution to this was started by Mirko and revised by me. It is was posted yesterday. -- 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
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