* Re: vlan dotQ vs 2.4.19pre8-ac5 vs big packets trouble
2002-05-28 16:59 vlan dotQ vs 2.4.19pre8-ac5 vs big packets trouble Alexander Trotsai
@ 2002-05-28 20:09 ` Paul P Komkoff Jr
2002-05-29 7:03 ` Alexander Trotsai
0 siblings, 1 reply; 4+ messages in thread
From: Paul P Komkoff Jr @ 2002-05-28 20:09 UTC (permalink / raw)
To: linux-kernel; +Cc: Alexander Trotsai
Replying to Alexander Trotsai:
> # My 3C59X has MTU problems.
>
> Edit the 3C59x.c, find the place where it says:
>
> static const int mtu = 1500;
> and replace 1500 with
> static const int mtu = 1504;
>
> but I got same trouble with this patch
It seems that you use broken by design way. I believe that the following IS
correct (sigh)
===== 3c59x.c 1.14 vs 1.15 =====
--- 1.14/drivers/net/3c59x.c Sat May 25 16:11:31 2002
+++ 1.15/drivers/net/3c59x.c Mon May 27 19:49:49 2002
@@ -322,6 +322,9 @@
code size of a per-interface flag is not worthwhile. */
static char mii_preamble_required;
+/* The Ethernet Type used for 802.1q tagged frames */
+#define VLAN_ETHER_TYPE 0x8100
+
#define PFX DRV_NAME ": "
@@ -665,7 +668,7 @@
Wn2_ResetOptions=12,
};
enum Window3 { /* Window 3: MAC/config bits. */
- Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8,
+ Wn3_Config=0, Wn3_MaxPktSize=4, Wn3_MAC_Ctrl=6, Wn3_Options=8,
};
#define BFEXT(value, offset, bitcount) \
@@ -693,7 +696,8 @@
Media_LnkBeat = 0x0800,
};
enum Window7 { /* Window 7: Bus Master control. */
- Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12,
+ Wn7_MasterAddr = 0, Wn7_VlanEtherType=4, Wn7_MasterLen = 6,
+ Wn7_MasterStatus = 12,
};
/* Boomerang bus master control registers. */
enum MasterCtrl {
@@ -790,7 +794,8 @@
pm_state_valid:1, /* power_state[] has sane contents */
open:1,
medialock:1,
- must_free_region:1; /* Flag: if zero, Cardbus owns the I/O region */
+ must_free_region:1, /* Flag: if zero, Cardbus owns the I/O region */
+ large_frames:1; /* accept large frames */
int drv_flags;
u16 status_enable;
u16 intr_enable;
@@ -858,6 +863,9 @@
static int vortex_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static void vortex_tx_timeout(struct net_device *dev);
static void acpi_set_WOL(struct net_device *dev);
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+static void set_8021q_mode(struct net_device *dev, int enable);
+#endif
\f
/* This driver uses 'options' to pass the media type, full-duplex flag, etc. */
/* Option count limit only -- unlimited interfaces are supported. */
@@ -1049,6 +1057,7 @@
dev->base_addr = ioaddr;
dev->irq = irq;
dev->mtu = mtu;
+ vp->large_frames = mtu > 1500;
vp->drv_flags = vci->drv_flags;
vp->has_nway = (vci->drv_flags & HAS_NWAY) ? 1 : 0;
vp->io_size = vci->io_size;
@@ -1489,7 +1498,7 @@
/* Set the full-duplex bit. */
outw( ((vp->info1 & 0x8000) || vp->full_duplex ? 0x20 : 0) |
- (dev->mtu > 1500 ? 0x40 : 0) |
+ (vp->large_frames ? 0x40 : 0) |
((vp->full_duplex && vp->flow_ctrl && vp->partner_flow_ctrl) ? 0x100 : 0),
ioaddr + Wn3_MAC_Ctrl);
@@ -1573,6 +1582,10 @@
}
/* Set receiver mode: presumably accept b-case and phys addr only. */
set_rx_mode(dev);
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+ /* enable 802.1q tagged frames */
+ set_8021q_mode(dev, 1);
+#endif
outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
// issue_and_wait(dev, SetTxStart|0x07ff);
@@ -1710,7 +1723,7 @@
/* Set the full-duplex bit. */
EL3WINDOW(3);
outw( (vp->full_duplex ? 0x20 : 0) |
- (dev->mtu > 1500 ? 0x40 : 0) |
+ (vp->large_frames ? 0x40 : 0) |
((vp->full_duplex && vp->flow_ctrl && vp->partner_flow_ctrl) ? 0x100 : 0),
ioaddr + Wn3_MAC_Ctrl);
if (vortex_debug > 1)
@@ -1932,6 +1945,10 @@
issue_and_wait(dev, RxReset|0x07);
/* Set the Rx filter to the current state. */
set_rx_mode(dev);
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+ /* enable 802.1q VLAN tagged frames */
+ set_8021q_mode(dev, 1);
+#endif
outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
outw(AckIntr | HostError, ioaddr + EL3_CMD);
}
@@ -2529,6 +2546,11 @@
outw(RxDisable, ioaddr + EL3_CMD);
outw(TxDisable, ioaddr + EL3_CMD);
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+ /* Disable receiving 802.1q tagged frames */
+ set_8021q_mode(dev, 0);
+#endif
+
if (dev->if_port == XCVR_10base2)
/* Turn off thinnet power. Green! */
outw(StopCoax, ioaddr + EL3_CMD);
@@ -2791,6 +2813,50 @@
outw(new_mode, ioaddr + EL3_CMD);
}
+
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+/* Setup the card so that it can receive frames with an 802.1q VLAN tag.
+ Note that this must be done after each RxReset due to some backwards
+ compatibility logic in the Cyclone and Tornado ASICs */
+static void set_8021q_mode(struct net_device *dev, int enable)
+{
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ long ioaddr = dev->base_addr;
+ int old_window = inw(ioaddr + EL3_CMD);
+ int mac_ctrl;
+
+ if (vp->drv_flags&IS_CYCLONE || vp->drv_flags&IS_TORNADO) {
+ /* cyclone and tornado chipsets can recognize 802.1q
+ * tagged frames and treat them correctly */
+
+ int max_pkt_size = dev->mtu+14; /* MTU+Ethernet header */
+ if (enable)
+ max_pkt_size += 4; /* 802.1Q VLAN tag */
+
+ EL3WINDOW(3);
+ outw(max_pkt_size, ioaddr+Wn3_MaxPktSize);
+
+ /* set VlanEtherType to let the hardware checksumming
+ treat tagged frames correctly */
+ EL3WINDOW(7);
+ outw(VLAN_ETHER_TYPE, ioaddr+Wn7_VlanEtherType);
+ } else {
+ /* on older cards we have to enable large frames */
+
+ vp->large_frames = dev->mtu > 1500 || enable;
+
+ EL3WINDOW(3);
+ mac_ctrl = inw(ioaddr+Wn3_MAC_Ctrl);
+ if (vp->large_frames)
+ mac_ctrl |= 0x40;
+ else
+ mac_ctrl &= ~0x40;
+ outw(mac_ctrl, ioaddr+Wn3_MAC_Ctrl);
+ }
+
+ EL3WINDOW(old_window);
+}
+#endif
/* MII transceiver control section.
Read and write the MII registers using software-generated serial
>
> --
> Best regard, Alexander Trotsai aka MAGE-RIPE aka MAGE-UANIC
> My PGP at ftp://blackhole.adamant.net/pgp/trotsai.key[.asc]
> Big trouble - Post-it Note Sludge leaked into the monitor.
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
--
Paul P 'Stingray' Komkoff 'Greatest' Jr /// (icq)23200764 /// (http)stingr.net
When you're invisible, the only one really watching you is you (my keychain)
^ permalink raw reply [flat|nested] 4+ messages in thread