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Date: Mon, 17 Sep 2012 17:10:17 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, mlindner@...vell.com, shemminger@...tta.com,
linux-kernel@...r.kernel.org
Subject: [patch net] sky2: fix rx filter setup on link up
In my case I have following problem. sky2_set_multicast() sets registers
GM_MC_ADDR_H[1-4] correctly to:
0000 0800 0001 0410
However, when adapter gets link and sky2_link_up() is called, the values
are for some reason different:
0000 0800 0016 0410
This in my case prevents iface to be able to receive packets with dst mac
01:80:C2:00:00:02 (LACPDU dst mac), which I set up previously by
SIOCADDMULTI.
So remember computed rx_filter data and write it to GM_MC_ADDR_H[1-4] on
link_up.
Signed-off-by: Jiri Pirko <jiri@...nulli.us>
---
drivers/net/ethernet/marvell/sky2.c | 30 ++++++++++++++++++++++--------
drivers/net/ethernet/marvell/sky2.h | 2 ++
2 files changed, 24 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 2b0748d..5293ff4 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -2186,6 +2186,8 @@ static u16 sky2_phy_speed(const struct sky2_hw *hw, u16 aux)
}
}
+static void sky2_write_rx_filter(struct sky2_port *sky2, u8 *filter);
+
static void sky2_link_up(struct sky2_port *sky2)
{
struct sky2_hw *hw = sky2->hw;
@@ -2211,6 +2213,9 @@ static void sky2_link_up(struct sky2_port *sky2)
sky2_write8(hw, SK_REG(port, LNK_LED_REG),
LINKLED_ON | LINKLED_BLINK_OFF | LINKLED_LINKSYNC_OFF);
+ /* Refresh RX filter */
+ sky2_write_rx_filter(sky2, sky2->rx_filter);
+
netif_info(sky2, link, sky2->netdev,
"Link is up at %d Mbps, %s duplex, flow control %s\n",
sky2->speed,
@@ -3849,6 +3854,21 @@ static inline void sky2_add_filter(u8 filter[8], const u8 *addr)
filter[bit >> 3] |= 1 << (bit & 7);
}
+static void sky2_write_rx_filter(struct sky2_port *sky2, u8 *filter)
+{
+ struct sky2_hw *hw = sky2->hw;
+ unsigned port = sky2->port;
+
+ gma_write16(hw, port, GM_MC_ADDR_H1,
+ (u16) filter[0] | ((u16) filter[1] << 8));
+ gma_write16(hw, port, GM_MC_ADDR_H2,
+ (u16) filter[2] | ((u16) filter[3] << 8));
+ gma_write16(hw, port, GM_MC_ADDR_H3,
+ (u16) filter[4] | ((u16) filter[5] << 8));
+ gma_write16(hw, port, GM_MC_ADDR_H4,
+ (u16) filter[6] | ((u16) filter[7] << 8));
+}
+
static void sky2_set_multicast(struct net_device *dev)
{
struct sky2_port *sky2 = netdev_priv(dev);
@@ -3882,14 +3902,8 @@ static void sky2_set_multicast(struct net_device *dev)
sky2_add_filter(filter, ha->addr);
}
- gma_write16(hw, port, GM_MC_ADDR_H1,
- (u16) filter[0] | ((u16) filter[1] << 8));
- gma_write16(hw, port, GM_MC_ADDR_H2,
- (u16) filter[2] | ((u16) filter[3] << 8));
- gma_write16(hw, port, GM_MC_ADDR_H3,
- (u16) filter[4] | ((u16) filter[5] << 8));
- gma_write16(hw, port, GM_MC_ADDR_H4,
- (u16) filter[6] | ((u16) filter[7] << 8));
+ sky2_write_rx_filter(sky2, filter);
+ memcpy(sky2->rx_filter, filter, sizeof(sky2->rx_filter));
gma_write16(hw, port, GM_RX_CTRL, reg);
}
diff --git a/drivers/net/ethernet/marvell/sky2.h b/drivers/net/ethernet/marvell/sky2.h
index 615ac63..513c266 100644
--- a/drivers/net/ethernet/marvell/sky2.h
+++ b/drivers/net/ethernet/marvell/sky2.h
@@ -2272,6 +2272,8 @@ struct sky2_port {
#ifdef CONFIG_SKY2_DEBUG
struct dentry *debugfs;
#endif
+
+ u8 rx_filter[8];
};
struct sky2_hw {
--
1.7.11.4
--
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