From 99f65f25c19a7a8a5789c300c2a575cff3453382 Mon Sep 17 00:00:00 2001
From: Ulrich Kunitz <kune@deine-taler.de>
Date: Tue, 1 Aug 2006 23:43:30 +0200
Subject: [PATCH 01/11] [PATCH] zd1211rw: Fixes radiotap header

There has been a problem in the radiotap header. Monitor mode
works now with tcpdump 3.94 + libpcap 0.9.4. ethereal 0.99.0 +
libpcap 0.9.4 is broken, because it doesn't find the right offset
for the IEEE 802.11 header.

Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/zd1211rw/zd_mac.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index 3bdc54d128d0..b3943038ff83 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -713,10 +713,10 @@ static int zd_mac_tx(struct zd_mac *mac, struct ieee80211_txb *txb, int pri)
 struct zd_rt_hdr {
 	struct ieee80211_radiotap_header rt_hdr;
 	u8  rt_flags;
+	u8  rt_rate;
 	u16 rt_channel;
 	u16 rt_chbitmask;
-	u16 rt_rate;
-};
+} __attribute__((packed));
 
 static void fill_rt_header(void *buffer, struct zd_mac *mac,
 	                   const struct ieee80211_rx_stats *stats,
@@ -735,14 +735,14 @@ static void fill_rt_header(void *buffer, struct zd_mac *mac,
 	if (status->decryption_type & (ZD_RX_WEP64|ZD_RX_WEP128|ZD_RX_WEP256))
 		hdr->rt_flags |= IEEE80211_RADIOTAP_F_WEP;
 
+	hdr->rt_rate = stats->rate / 5;
+
 	/* FIXME: 802.11a */
 	hdr->rt_channel = cpu_to_le16(ieee80211chan2mhz(
 		                             _zd_chip_get_channel(&mac->chip)));
 	hdr->rt_chbitmask = cpu_to_le16(IEEE80211_CHAN_2GHZ |
 		((status->frame_status & ZD_RX_FRAME_MODULATION_MASK) ==
 		ZD_RX_OFDM ? IEEE80211_CHAN_OFDM : IEEE80211_CHAN_CCK));
-
-	hdr->rt_rate = stats->rate / 5;
 }
 
 /* Returns 1 if the data packet is for us and 0 otherwise. */

From 71eae25ece9ee6bc2fe9500c9c06bfbb46c55fb2 Mon Sep 17 00:00:00 2001
From: Daniel Drake <dsd@gentoo.org>
Date: Tue, 1 Aug 2006 23:43:31 +0200
Subject: [PATCH 02/11] [PATCH] zd1211rw: Pass more management frame types up
 to host

We'll be needing these at some point...

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/zd1211rw/zd_chip.h | 4 +++-
 drivers/net/wireless/zd1211rw/zd_mac.c  | 6 ++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/zd1211rw/zd_chip.h b/drivers/net/wireless/zd1211rw/zd_chip.h
index 805121093ab5..0eb9c8facbd3 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.h
+++ b/drivers/net/wireless/zd1211rw/zd_chip.h
@@ -461,10 +461,12 @@
 
 #define CR_RX_FILTER			CTL_REG(0x068c)
 #define RX_FILTER_ASSOC_RESPONSE	0x0002
+#define RX_FILTER_REASSOC_RESPONSE	0x0008
 #define RX_FILTER_PROBE_RESPONSE	0x0020
 #define RX_FILTER_BEACON		0x0100
+#define RX_FILTER_DISASSOC		0x0400
 #define RX_FILTER_AUTH			0x0800
-/* Sniff modus sets filter to 0xfffff */
+/* Monitor mode sets filter to 0xfffff */
 
 #define CR_ACK_TIMEOUT_EXT		CTL_REG(0x0690)
 #define CR_BCN_FIFO_SEMAPHORE		CTL_REG(0x0694)
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index b3943038ff83..1cf1fdab3c05 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -136,8 +136,10 @@ static int reset_mode(struct zd_mac *mac)
 {
 	struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
 	struct zd_ioreq32 ioreqs[3] = {
-		{ CR_RX_FILTER, RX_FILTER_BEACON|RX_FILTER_PROBE_RESPONSE|
-			        RX_FILTER_AUTH|RX_FILTER_ASSOC_RESPONSE },
+		{ CR_RX_FILTER, RX_FILTER_BEACON | RX_FILTER_PROBE_RESPONSE |
+			        RX_FILTER_AUTH | RX_FILTER_ASSOC_RESPONSE |
+				RX_FILTER_REASSOC_RESPONSE |
+				RX_FILTER_DISASSOC },
 		{ CR_SNIFFER_ON, 0U },
 		{ CR_ENCRYPTION_TYPE, NO_WEP },
 	};

From 40da08bca6f4e7dec4a75c3c47800e5f4ca4e567 Mon Sep 17 00:00:00 2001
From: Daniel Drake <dsd@gentoo.org>
Date: Tue, 1 Aug 2006 23:43:32 +0200
Subject: [PATCH 03/11] [PATCH] zd1211rw: Fix software encryption/decryption

Apparently the ZD1211 doesn't mind, but the ZD1211B absolutely must be
told that encryption is happening in software.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/zd1211rw/zd_mac.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index 1cf1fdab3c05..a66625c43487 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -108,7 +108,9 @@ int zd_mac_init_hw(struct zd_mac *mac, u8 device_type)
 	if (r)
 		goto disable_int;
 
-	r = zd_set_encryption_type(chip, NO_WEP);
+	/* We must inform the device that we are doing encryption/decryption in
+	 * software at the moment. */
+	r = zd_set_encryption_type(chip, ENC_SNIFFER);
 	if (r)
 		goto disable_int;
 
@@ -141,7 +143,6 @@ static int reset_mode(struct zd_mac *mac)
 				RX_FILTER_REASSOC_RESPONSE |
 				RX_FILTER_DISASSOC },
 		{ CR_SNIFFER_ON, 0U },
-		{ CR_ENCRYPTION_TYPE, NO_WEP },
 	};
 
 	if (ieee->iw_mode == IW_MODE_MONITOR) {

From b1162b639cc13d5a1ab9bcbd0a502599ddf49f86 Mon Sep 17 00:00:00 2001
From: Daniel Drake <dsd@gentoo.org>
Date: Tue, 1 Aug 2006 23:43:33 +0200
Subject: [PATCH 04/11] [PATCH] zd1211rw: Remove bogus assert

This function is never called in interrupt context, and it doesn't
matter if it is called in IRQ context or not.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/zd1211rw/zd_usb.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c
index 72f90525bf68..f9a93f6abe84 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zd1211rw/zd_usb.c
@@ -323,7 +323,6 @@ static void disable_read_regs_int(struct zd_usb *usb)
 {
 	struct zd_usb_interrupt *intr = &usb->intr;
 
-	ZD_ASSERT(in_interrupt());
 	spin_lock(&intr->lock);
 	intr->read_regs_enabled = 0;
 	spin_unlock(&intr->lock);

From b269825b9bb2c925bbaf4365ec9fa4c6a16e46b4 Mon Sep 17 00:00:00 2001
From: Ulrich Kunitz <kune@deine-taler.de>
Date: Tue, 1 Aug 2006 23:43:34 +0200
Subject: [PATCH 05/11] [PATCH] zd1211rw: Fixed endianess issue with length
 info tag detection

Discovered a problem while accessing www.python.org on my PPC32.
The problem was pretty consistent for all sticks. The reason was
that while testing for the length info tag, I ignored the
endianess of the host system.

Please recognize that converting the constant to little endian, we
create faster code.

Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/zd1211rw/zd_usb.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c
index f9a93f6abe84..6320984126c7 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zd1211rw/zd_usb.c
@@ -544,11 +544,11 @@ static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer,
 	 * be padded. Unaligned access might also happen if the length_info
 	 * structure is not present.
 	 */
-	if (get_unaligned(&length_info->tag) == RX_LENGTH_INFO_TAG) {
+	if (get_unaligned(&length_info->tag) == cpu_to_le16(RX_LENGTH_INFO_TAG))
+	{
 		unsigned int l, k, n;
 		for (i = 0, l = 0;; i++) {
-			k = le16_to_cpu(get_unaligned(
-				&length_info->length[i]));
+			k = le16_to_cpu(get_unaligned(&length_info->length[i]));
 			n = l+k;
 			if (n > length)
 				return;

From fde627b54ce7bef094157074f3adb9b6e1a96d4c Mon Sep 17 00:00:00 2001
From: Ulrich Kunitz <kune@deine-taler.de>
Date: Tue, 1 Aug 2006 23:43:35 +0200
Subject: [PATCH 06/11] [PATCH] zd1211rw: Packet filter fix for managed (STA)
 mode

I had problems with my AVM Fritz!Box access point. It appeared
that the AP deauthorized me and the softmac didn't reconnect me.
This patch handles the problem.

Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 drivers/net/wireless/zd1211rw/zd_chip.c | 4 ++--
 drivers/net/wireless/zd1211rw/zd_chip.h | 6 +++---
 drivers/net/wireless/zd1211rw/zd_mac.c  | 5 +----
 3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
index efc9c4bd826f..da9d06bdb818 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.c
+++ b/drivers/net/wireless/zd1211rw/zd_chip.c
@@ -797,7 +797,7 @@ static int zd1211_hw_init_hmac(struct zd_chip *chip)
 		{ CR_ADDA_MBIAS_WARMTIME,	0x30000808 },
 		{ CR_ZD1211_RETRY_MAX,		0x2 },
 		{ CR_SNIFFER_ON,		0 },
-		{ CR_RX_FILTER,			AP_RX_FILTER },
+		{ CR_RX_FILTER,			STA_RX_FILTER },
 		{ CR_GROUP_HASH_P1,		0x00 },
 		{ CR_GROUP_HASH_P2,		0x80000000 },
 		{ CR_REG1,			0xa4 },
@@ -844,7 +844,7 @@ static int zd1211b_hw_init_hmac(struct zd_chip *chip)
 		{ CR_ZD1211B_AIFS_CTL2,		0x008C003C },
 		{ CR_ZD1211B_TXOP,		0x01800824 },
 		{ CR_SNIFFER_ON,		0 },
-		{ CR_RX_FILTER,			AP_RX_FILTER },
+		{ CR_RX_FILTER,			STA_RX_FILTER },
 		{ CR_GROUP_HASH_P1,		0x00 },
 		{ CR_GROUP_HASH_P2,		0x80000000 },
 		{ CR_REG1,			0xa4 },
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.h b/drivers/net/wireless/zd1211rw/zd_chip.h
index 0eb9c8facbd3..069d2b467339 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.h
+++ b/drivers/net/wireless/zd1211rw/zd_chip.h
@@ -466,6 +466,9 @@
 #define RX_FILTER_BEACON		0x0100
 #define RX_FILTER_DISASSOC		0x0400
 #define RX_FILTER_AUTH			0x0800
+#define AP_RX_FILTER			0x0400feff
+#define STA_RX_FILTER			0x0000ffff
+
 /* Monitor mode sets filter to 0xfffff */
 
 #define CR_ACK_TIMEOUT_EXT		CTL_REG(0x0690)
@@ -548,9 +551,6 @@
 #define CR_ZD1211B_TXOP			CTL_REG(0x0b20)
 #define CR_ZD1211B_RETRY_MAX		CTL_REG(0x0b28)
 
-#define AP_RX_FILTER			0x0400feff
-#define STA_RX_FILTER			0x0000ffff
-
 #define CWIN_SIZE			0x007f043f
 
 
diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c
index a66625c43487..d6f3e02a0b54 100644
--- a/drivers/net/wireless/zd1211rw/zd_mac.c
+++ b/drivers/net/wireless/zd1211rw/zd_mac.c
@@ -138,10 +138,7 @@ static int reset_mode(struct zd_mac *mac)
 {
 	struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac);
 	struct zd_ioreq32 ioreqs[3] = {
-		{ CR_RX_FILTER, RX_FILTER_BEACON | RX_FILTER_PROBE_RESPONSE |
-			        RX_FILTER_AUTH | RX_FILTER_ASSOC_RESPONSE |
-				RX_FILTER_REASSOC_RESPONSE |
-				RX_FILTER_DISASSOC },
+		{ CR_RX_FILTER, STA_RX_FILTER },
 		{ CR_SNIFFER_ON, 0U },
 	};
 

From b41477f32a5aaf39a77741c0138b16f16a636c70 Mon Sep 17 00:00:00 2001
From: Ananda Raju <Ananda.Raju@neterion.com>
Date: Mon, 24 Jul 2006 19:52:49 -0400
Subject: [PATCH 07/11] [PATCH] s2io driver bug fixes #1

	This patch contains some of the bug fixes and enhancements done to
	s2io driver. Following are the brief description of changes

	1. Introduced macro "S2IO_PARM_INT" for declaring integer load parameter
	2. UDP_RR test failure, memset txdl after Tx completion
	3. PXE boot may leave adapter in unknown state so do reset in probe.
	4. Add Tx completion code in netpoll
	5. In s2io_vpd_read() move array vpd_data[] to pointer, saves stack memory
	6. Fix bug in ethtool online test

Signed-off-by: Ananda Raju <ananda.raju@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/net/s2io.c | 158 +++++++++++++++++++++++----------------------
 drivers/net/s2io.h |   5 ++
 2 files changed, 85 insertions(+), 78 deletions(-)

diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index e1fe3a0a7b0b..4a4e38be80a8 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -370,38 +370,50 @@ static const u64 fix_mac[] = {
 	END_SIGN
 };
 
+MODULE_AUTHOR("Raghavendra Koushik <raghavendra.koushik@neterion.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+
 /* Module Loadable parameters. */
-static unsigned int tx_fifo_num = 1;
+S2IO_PARM_INT(tx_fifo_num, 1);
+S2IO_PARM_INT(rx_ring_num, 1);
+
+
+S2IO_PARM_INT(rx_ring_mode, 1);
+S2IO_PARM_INT(use_continuous_tx_intrs, 1);
+S2IO_PARM_INT(rmac_pause_time, 0x100);
+S2IO_PARM_INT(mc_pause_threshold_q0q3, 187);
+S2IO_PARM_INT(mc_pause_threshold_q4q7, 187);
+S2IO_PARM_INT(shared_splits, 0);
+S2IO_PARM_INT(tmac_util_period, 5);
+S2IO_PARM_INT(rmac_util_period, 5);
+S2IO_PARM_INT(bimodal, 0);
+S2IO_PARM_INT(l3l4hdr_size, 128);
+/* Frequency of Rx desc syncs expressed as power of 2 */
+S2IO_PARM_INT(rxsync_frequency, 3);
+/* Interrupt type. Values can be 0(INTA), 1(MSI), 2(MSI_X) */
+S2IO_PARM_INT(intr_type, 0);
+/* Large receive offload feature */
+S2IO_PARM_INT(lro, 0);
+/* Max pkts to be aggregated by LRO at one time. If not specified,
+ * aggregation happens until we hit max IP pkt size(64K)
+ */
+S2IO_PARM_INT(lro_max_pkts, 0xFFFF);
+#ifndef CONFIG_S2IO_NAPI
+S2IO_PARM_INT(indicate_max_pkts, 0);
+#endif
+
 static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
     {DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
-static unsigned int rx_ring_num = 1;
 static unsigned int rx_ring_sz[MAX_RX_RINGS] =
     {[0 ...(MAX_RX_RINGS - 1)] = SMALL_BLK_CNT};
 static unsigned int rts_frm_len[MAX_RX_RINGS] =
     {[0 ...(MAX_RX_RINGS - 1)] = 0 };
-static unsigned int rx_ring_mode = 1;
-static unsigned int use_continuous_tx_intrs = 1;
-static unsigned int rmac_pause_time = 0x100;
-static unsigned int mc_pause_threshold_q0q3 = 187;
-static unsigned int mc_pause_threshold_q4q7 = 187;
-static unsigned int shared_splits;
-static unsigned int tmac_util_period = 5;
-static unsigned int rmac_util_period = 5;
-static unsigned int bimodal = 0;
-static unsigned int l3l4hdr_size = 128;
-#ifndef CONFIG_S2IO_NAPI
-static unsigned int indicate_max_pkts;
-#endif
-/* Frequency of Rx desc syncs expressed as power of 2 */
-static unsigned int rxsync_frequency = 3;
-/* Interrupt type. Values can be 0(INTA), 1(MSI), 2(MSI_X) */
-static unsigned int intr_type = 0;
-/* Large receive offload feature */
-static unsigned int lro = 0;
-/* Max pkts to be aggregated by LRO at one time. If not specified,
- * aggregation happens until we hit max IP pkt size(64K)
- */
-static unsigned int lro_max_pkts = 0xFFFF;
+
+module_param_array(tx_fifo_len, uint, NULL, 0);
+module_param_array(rx_ring_sz, uint, NULL, 0);
+module_param_array(rts_frm_len, uint, NULL, 0);
 
 /*
  * S2IO device table.
@@ -464,10 +476,9 @@ static int init_shared_mem(struct s2io_nic *nic)
 		size += config->tx_cfg[i].fifo_len;
 	}
 	if (size > MAX_AVAILABLE_TXDS) {
-		DBG_PRINT(ERR_DBG, "%s: Requested TxDs too high, ",
-			  __FUNCTION__);
+		DBG_PRINT(ERR_DBG, "s2io: Requested TxDs too high, ");
 		DBG_PRINT(ERR_DBG, "Requested: %d, max supported: 8192\n", size);
-		return FAILURE;
+		return -EINVAL;
 	}
 
 	lst_size = (sizeof(TxD_t) * config->max_txds);
@@ -547,6 +558,7 @@ static int init_shared_mem(struct s2io_nic *nic)
 	nic->ufo_in_band_v = kmalloc((sizeof(u64) * size), GFP_KERNEL);
 	if (!nic->ufo_in_band_v)
 		return -ENOMEM;
+	memset(nic->ufo_in_band_v, 0, size);
 
 	/* Allocation and initialization of RXDs in Rings */
 	size = 0;
@@ -1213,7 +1225,7 @@ static int init_nic(struct s2io_nic *nic)
 		break;
 	}
 
-	/* Enable Tx FIFO partition 0. */
+	/* Enable all configured Tx FIFO partitions */
 	val64 = readq(&bar0->tx_fifo_partition_0);
 	val64 |= (TX_FIFO_PARTITION_EN);
 	writeq(val64, &bar0->tx_fifo_partition_0);
@@ -1650,7 +1662,7 @@ static void en_dis_able_nic_intrs(struct s2io_nic *nic, u16 mask, int flag)
 			writeq(temp64, &bar0->general_int_mask);
 			/*
 			 * If Hercules adapter enable GPIO otherwise
-			 * disabled all PCIX, Flash, MDIO, IIC and GPIO
+			 * disable all PCIX, Flash, MDIO, IIC and GPIO
 			 * interrupts for now.
 			 * TODO
 			 */
@@ -2119,7 +2131,7 @@ static struct sk_buff *s2io_txdl_getskb(fifo_info_t *fifo_data, TxD_t *txdlp, in
 				       frag->size, PCI_DMA_TODEVICE);
 		}
 	}
-	txdlp->Host_Control = 0;
+	memset(txdlp,0, (sizeof(TxD_t) * fifo_data->max_txds));
 	return(skb);
 }
 
@@ -2614,23 +2626,23 @@ no_rx:
 }
 #endif
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
 /**
- * s2io_netpoll - Rx interrupt service handler for netpoll support
+ * s2io_netpoll - netpoll event handler entry point
  * @dev : pointer to the device structure.
  * Description:
- * Polling 'interrupt' - used by things like netconsole to send skbs
- * without having to re-enable interrupts. It's not called while
- * the interrupt routine is executing.
+ * 	This function will be called by upper layer to check for events on the
+ * interface in situations where interrupts are disabled. It is used for
+ * specific in-kernel networking tasks, such as remote consoles and kernel
+ * debugging over the network (example netdump in RedHat).
  */
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
 static void s2io_netpoll(struct net_device *dev)
 {
 	nic_t *nic = dev->priv;
 	mac_info_t *mac_control;
 	struct config_param *config;
 	XENA_dev_config_t __iomem *bar0 = nic->bar0;
-	u64 val64;
+	u64 val64 = 0xFFFFFFFFFFFFFFFFULL;
 	int i;
 
 	disable_irq(dev->irq);
@@ -2639,9 +2651,17 @@ static void s2io_netpoll(struct net_device *dev)
 	mac_control = &nic->mac_control;
 	config = &nic->config;
 
-	val64 = readq(&bar0->rx_traffic_int);
 	writeq(val64, &bar0->rx_traffic_int);
+	writeq(val64, &bar0->tx_traffic_int);
 
+	/* we need to free up the transmitted skbufs or else netpoll will 
+	 * run out of skbs and will fail and eventually netpoll application such
+	 * as netdump will fail.
+	 */
+	for (i = 0; i < config->tx_fifo_num; i++)
+		tx_intr_handler(&mac_control->fifos[i]);
+
+	/* check for received packet and indicate up to network */
 	for (i = 0; i < config->rx_ring_num; i++)
 		rx_intr_handler(&mac_control->rings[i]);
 
@@ -3327,7 +3347,7 @@ static void s2io_reset(nic_t * sp)
 
 	/* Clear certain PCI/PCI-X fields after reset */
 	if (sp->device_type == XFRAME_II_DEVICE) {
-		/* Clear parity err detect bit */
+		/* Clear "detected parity error" bit */
 		pci_write_config_word(sp->pdev, PCI_STATUS, 0x8000);
 
 		/* Clearing PCIX Ecc status register */
@@ -4942,7 +4962,8 @@ static int write_eeprom(nic_t * sp, int off, u64 data, int cnt)
 }
 static void s2io_vpd_read(nic_t *nic)
 {
-	u8 vpd_data[256],data;
+	u8 *vpd_data;
+	u8 data;
 	int i=0, cnt, fail = 0;
 	int vpd_addr = 0x80;
 
@@ -4955,6 +4976,10 @@ static void s2io_vpd_read(nic_t *nic)
 		vpd_addr = 0x50;
 	}
 
+	vpd_data = kmalloc(256, GFP_KERNEL);
+	if (!vpd_data)
+		return;
+
 	for (i = 0; i < 256; i +=4 ) {
 		pci_write_config_byte(nic->pdev, (vpd_addr + 2), i);
 		pci_read_config_byte(nic->pdev,  (vpd_addr + 2), &data);
@@ -4977,6 +5002,7 @@ static void s2io_vpd_read(nic_t *nic)
 		memset(nic->product_name, 0, vpd_data[1]);
 		memcpy(nic->product_name, &vpd_data[3], vpd_data[1]);
 	}
+	kfree(vpd_data);
 }
 
 /**
@@ -5295,7 +5321,7 @@ static int s2io_link_test(nic_t * sp, uint64_t * data)
 	else
 		*data = 0;
 
-	return 0;
+	return *data;
 }
 
 /**
@@ -6337,7 +6363,7 @@ static int s2io_card_up(nic_t * sp)
 	s2io_set_multicast(dev);
 
 	if (sp->lro) {
-		/* Initialize max aggregatable pkts based on MTU */
+		/* Initialize max aggregatable pkts per session based on MTU */
 		sp->lro_max_aggr_per_sess = ((1<<16) - 1) / dev->mtu;
 		/* Check if we can use(if specified) user provided value */
 		if (lro_max_pkts < sp->lro_max_aggr_per_sess)
@@ -6438,7 +6464,7 @@ static void s2io_tx_watchdog(struct net_device *dev)
  *   @cksum : FCS checksum of the frame.
  *   @ring_no : the ring from which this RxD was extracted.
  *   Description:
- *   This function is called by the Tx interrupt serivce routine to perform
+ *   This function is called by the Rx interrupt serivce routine to perform
  *   some OS related operations on the SKB before passing it to the upper
  *   layers. It mainly checks if the checksum is OK, if so adds it to the
  *   SKBs cksum variable, increments the Rx packet count and passes the SKB
@@ -6698,33 +6724,6 @@ static void s2io_init_pci(nic_t * sp)
 	pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
 }
 
-MODULE_AUTHOR("Raghavendra Koushik <raghavendra.koushik@neterion.com>");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_VERSION);
-
-module_param(tx_fifo_num, int, 0);
-module_param(rx_ring_num, int, 0);
-module_param(rx_ring_mode, int, 0);
-module_param_array(tx_fifo_len, uint, NULL, 0);
-module_param_array(rx_ring_sz, uint, NULL, 0);
-module_param_array(rts_frm_len, uint, NULL, 0);
-module_param(use_continuous_tx_intrs, int, 1);
-module_param(rmac_pause_time, int, 0);
-module_param(mc_pause_threshold_q0q3, int, 0);
-module_param(mc_pause_threshold_q4q7, int, 0);
-module_param(shared_splits, int, 0);
-module_param(tmac_util_period, int, 0);
-module_param(rmac_util_period, int, 0);
-module_param(bimodal, bool, 0);
-module_param(l3l4hdr_size, int , 0);
-#ifndef CONFIG_S2IO_NAPI
-module_param(indicate_max_pkts, int, 0);
-#endif
-module_param(rxsync_frequency, int, 0);
-module_param(intr_type, int, 0);
-module_param(lro, int, 0);
-module_param(lro_max_pkts, int, 0);
-
 static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type)
 {
 	if ( tx_fifo_num > 8) {
@@ -6832,8 +6831,8 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 	}
 	if (dev_intr_type != MSI_X) {
 		if (pci_request_regions(pdev, s2io_driver_name)) {
-			DBG_PRINT(ERR_DBG, "Request Regions failed\n"),
-			    pci_disable_device(pdev);
+			DBG_PRINT(ERR_DBG, "Request Regions failed\n");
+			pci_disable_device(pdev);
 			return -ENODEV;
 		}
 	}
@@ -6957,7 +6956,7 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 	/*  initialize the shared memory used by the NIC and the host */
 	if (init_shared_mem(sp)) {
 		DBG_PRINT(ERR_DBG, "%s: Memory allocation failed\n",
-			  __FUNCTION__);
+			  dev->name);
 		ret = -ENOMEM;
 		goto mem_alloc_failed;
 	}
@@ -7094,6 +7093,9 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 	dev->addr_len = ETH_ALEN;
 	memcpy(dev->dev_addr, sp->def_mac_addr, ETH_ALEN);
 
+	/* reset Nic and bring it to known state */
+	s2io_reset(sp);
+
 	/*
 	 * Initialize the tasklet status and link state flags
 	 * and the card state parameter
@@ -7131,11 +7133,11 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 		goto register_failed;
 	}
 	s2io_vpd_read(sp);
-	DBG_PRINT(ERR_DBG, "%s: Neterion %s",dev->name, sp->product_name);
-	DBG_PRINT(ERR_DBG, "(rev %d), Driver version %s\n",
-				get_xena_rev_id(sp->pdev),
-				s2io_driver_version);
 	DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2005 Neterion Inc.\n");
+	DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n",dev->name,
+		  sp->product_name, get_xena_rev_id(sp->pdev));
+	DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
+		  s2io_driver_version);
 	DBG_PRINT(ERR_DBG, "%s: MAC ADDR: "
 			  "%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name,
 			  sp->def_mac_addr[0].mac_addr[0],
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 217097bc22f1..1654f71a9af8 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -1011,4 +1011,9 @@ static void clear_lro_session(lro_t *lro);
 static void queue_rx_frame(struct sk_buff *skb);
 static void update_L3L4_header(nic_t *sp, lro_t *lro);
 static void lro_append_pkt(nic_t *sp, lro_t *lro, struct sk_buff *skb, u32 tcp_len);
+
+#define S2IO_PARM_INT(X, def_val) \
+	static unsigned int X = def_val;\
+		module_param(X , uint, 0);
+
 #endif				/* _S2IO_H */

From 75c30b1368faaa9c740536b91a15a33aab62f30b Mon Sep 17 00:00:00 2001
From: Ananda Raju <Ananda.Raju@neterion.com>
Date: Mon, 24 Jul 2006 19:55:09 -0400
Subject: [PATCH 08/11] [PATCH] s2io driver bug fixes #2

	This patch contains some of the bug fixes and enhancements done to
	s2io driver. Following are the brief description of changes

	1. code cleanup to handle gso modification better
	2. Move repeated code in rx path, to a common function
	   s2io_chk_rx_buffers()
	3. Bug fix in MSI interrupt
	4. clear statistics when card is down
	5. Avoid linked list traversing in lro aggregation.
	6. Use pci_dma_sync_single_for_cpu for buffer0 in case of 2/3
	   buffer mode.
	7. ethtool tso get/set functions to set clear NETIF_F_TSO6
	8. Stop LRO aggregation when we receive ECN notification

Signed-off-by: Ananda Raju <ananda.raju@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/net/s2io.c | 228 ++++++++++++++++++---------------------------
 drivers/net/s2io.h |   5 +
 2 files changed, 98 insertions(+), 135 deletions(-)

diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 4a4e38be80a8..132ed32bce1a 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -76,7 +76,7 @@
 #include "s2io.h"
 #include "s2io-regs.h"
 
-#define DRV_VERSION "2.0.14.2"
+#define DRV_VERSION "2.0.15.2"
 
 /* S2io Driver name & version. */
 static char s2io_driver_name[] = "Neterion";
@@ -2383,9 +2383,14 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
 			skb->data = (void *) (unsigned long)tmp;
 			skb->tail = (void *) (unsigned long)tmp;
 
-			((RxD3_t*)rxdp)->Buffer0_ptr =
-			    pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN,
+			if (!(((RxD3_t*)rxdp)->Buffer0_ptr))
+				((RxD3_t*)rxdp)->Buffer0_ptr =
+				   pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN,
 					   PCI_DMA_FROMDEVICE);
+			else
+				pci_dma_sync_single_for_device(nic->pdev,
+				    (dma_addr_t) ((RxD3_t*)rxdp)->Buffer0_ptr,
+				    BUF0_LEN, PCI_DMA_FROMDEVICE);
 			rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
 			if (nic->rxd_mode == RXD_MODE_3B) {
 				/* Two buffer mode */
@@ -2398,10 +2403,13 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
 				(nic->pdev, skb->data, dev->mtu + 4,
 						PCI_DMA_FROMDEVICE);
 
-				/* Buffer-1 will be dummy buffer not used */
-				((RxD3_t*)rxdp)->Buffer1_ptr =
-				pci_map_single(nic->pdev, ba->ba_1, BUF1_LEN,
-					PCI_DMA_FROMDEVICE);
+				/* Buffer-1 will be dummy buffer. Not used */
+				if (!(((RxD3_t*)rxdp)->Buffer1_ptr)) {
+					((RxD3_t*)rxdp)->Buffer1_ptr =
+						pci_map_single(nic->pdev, 
+						ba->ba_1, BUF1_LEN,
+						PCI_DMA_FROMDEVICE);
+				}
 				rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
 				rxdp->Control_2 |= SET_BUFFER2_SIZE_3
 								(dev->mtu + 4);
@@ -2728,7 +2736,7 @@ static void rx_intr_handler(ring_info_t *ring_data)
 		/* If your are next to put index then it's FIFO full condition */
 		if ((get_block == put_block) &&
 		    (get_info.offset + 1) == put_info.offset) {
-			DBG_PRINT(ERR_DBG, "%s: Ring Full\n",dev->name);
+			DBG_PRINT(INTR_DBG, "%s: Ring Full\n",dev->name);
 			break;
 		}
 		skb = (struct sk_buff *) ((unsigned long)rxdp->Host_Control);
@@ -2748,18 +2756,15 @@ static void rx_intr_handler(ring_info_t *ring_data)
 				 HEADER_SNAP_SIZE,
 				 PCI_DMA_FROMDEVICE);
 		} else if (nic->rxd_mode == RXD_MODE_3B) {
-			pci_unmap_single(nic->pdev, (dma_addr_t)
+			pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t)
 				 ((RxD3_t*)rxdp)->Buffer0_ptr,
 				 BUF0_LEN, PCI_DMA_FROMDEVICE);
-			pci_unmap_single(nic->pdev, (dma_addr_t)
-				 ((RxD3_t*)rxdp)->Buffer1_ptr,
-				 BUF1_LEN, PCI_DMA_FROMDEVICE);
 			pci_unmap_single(nic->pdev, (dma_addr_t)
 				 ((RxD3_t*)rxdp)->Buffer2_ptr,
 				 dev->mtu + 4,
 				 PCI_DMA_FROMDEVICE);
 		} else {
-			pci_unmap_single(nic->pdev, (dma_addr_t)
+			pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t)
 					 ((RxD3_t*)rxdp)->Buffer0_ptr, BUF0_LEN,
 					 PCI_DMA_FROMDEVICE);
 			pci_unmap_single(nic->pdev, (dma_addr_t)
@@ -3548,7 +3553,7 @@ static void restore_xmsi_data(nic_t *nic)
 	u64 val64;
 	int i;
 
-	for (i=0; i< nic->avail_msix_vectors; i++) {
+	for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
 		writeq(nic->msix_info[i].addr, &bar0->xmsi_address);
 		writeq(nic->msix_info[i].data, &bar0->xmsi_data);
 		val64 = (BIT(7) | BIT(15) | vBIT(i, 26, 6));
@@ -3567,7 +3572,7 @@ static void store_xmsi_data(nic_t *nic)
 	int i;
 
 	/* Store and display */
-	for (i=0; i< nic->avail_msix_vectors; i++) {
+	for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
 		val64 = (BIT(15) | vBIT(i, 26, 6));
 		writeq(val64, &bar0->xmsi_access);
 		if (wait_for_msix_trans(nic, i)) {
@@ -3828,13 +3833,11 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 	TxD_t *txdp;
 	TxFIFO_element_t __iomem *tx_fifo;
 	unsigned long flags;
-#ifdef NETIF_F_TSO
-	int mss;
-#endif
 	u16 vlan_tag = 0;
 	int vlan_priority = 0;
 	mac_info_t *mac_control;
 	struct config_param *config;
+	int offload_type;
 
 	mac_control = &sp->mac_control;
 	config = &sp->config;
@@ -3882,13 +3885,11 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 		return 0;
 	}
 
-	txdp->Control_1 = 0;
-	txdp->Control_2 = 0;
+	offload_type = s2io_offload_type(skb);
 #ifdef NETIF_F_TSO
-	mss = skb_shinfo(skb)->gso_size;
-	if (skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
+	if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
 		txdp->Control_1 |= TXD_TCP_LSO_EN;
-		txdp->Control_1 |= TXD_TCP_LSO_MSS(mss);
+		txdp->Control_1 |= TXD_TCP_LSO_MSS(s2io_tcp_mss(skb));
 	}
 #endif
 	if (skb->ip_summed == CHECKSUM_HW) {
@@ -3906,10 +3907,10 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 	}
 
 	frg_len = skb->len - skb->data_len;
-	if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP) {
+	if (offload_type == SKB_GSO_UDP) {
 		int ufo_size;
 
-		ufo_size = skb_shinfo(skb)->gso_size;
+		ufo_size = s2io_udp_mss(skb);
 		ufo_size &= ~7;
 		txdp->Control_1 |= TXD_UFO_EN;
 		txdp->Control_1 |= TXD_UFO_MSS(ufo_size);
@@ -3926,16 +3927,13 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 					sp->ufo_in_band_v,
 					sizeof(u64), PCI_DMA_TODEVICE);
 		txdp++;
-		txdp->Control_1 = 0;
-		txdp->Control_2 = 0;
 	}
 
 	txdp->Buffer_Pointer = pci_map_single
 	    (sp->pdev, skb->data, frg_len, PCI_DMA_TODEVICE);
 	txdp->Host_Control = (unsigned long) skb;
 	txdp->Control_1 |= TXD_BUFFER0_SIZE(frg_len);
-
-	if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
+	if (offload_type == SKB_GSO_UDP)
 		txdp->Control_1 |= TXD_UFO_EN;
 
 	frg_cnt = skb_shinfo(skb)->nr_frags;
@@ -3950,12 +3948,12 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 		    (sp->pdev, frag->page, frag->page_offset,
 		     frag->size, PCI_DMA_TODEVICE);
 		txdp->Control_1 = TXD_BUFFER0_SIZE(frag->size);
-		if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
+		if (offload_type == SKB_GSO_UDP)
 			txdp->Control_1 |= TXD_UFO_EN;
 	}
 	txdp->Control_1 |= TXD_GATHER_CODE_LAST;
 
-	if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
+	if (offload_type == SKB_GSO_UDP)
 		frg_cnt++; /* as Txd0 was used for inband header */
 
 	tx_fifo = mac_control->tx_FIFO_start[queue];
@@ -3964,13 +3962,9 @@ static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST |
 		 TX_FIFO_LAST_LIST);
+	if (offload_type)
+		val64 |= TX_FIFO_SPECIAL_FUNC;
 
-#ifdef NETIF_F_TSO
-	if (mss)
-		val64 |= TX_FIFO_SPECIAL_FUNC;
-#endif
-	if (skb_shinfo(skb)->gso_type == SKB_GSO_UDP)
-		val64 |= TX_FIFO_SPECIAL_FUNC;
 	writeq(val64, &tx_fifo->List_Control);
 
 	mmiowb();
@@ -4004,13 +3998,41 @@ s2io_alarm_handle(unsigned long data)
 	mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
 }
 
+static int s2io_chk_rx_buffers(nic_t *sp, int rng_n)
+{
+	int rxb_size, level;
+
+	if (!sp->lro) {
+		rxb_size = atomic_read(&sp->rx_bufs_left[rng_n]);
+		level = rx_buffer_level(sp, rxb_size, rng_n);
+
+		if ((level == PANIC) && (!TASKLET_IN_USE)) {
+			int ret;
+			DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", __FUNCTION__);
+			DBG_PRINT(INTR_DBG, "PANIC levels\n");
+			if ((ret = fill_rx_buffers(sp, rng_n)) == -ENOMEM) {
+				DBG_PRINT(ERR_DBG, "Out of memory in %s",
+					  __FUNCTION__);
+				clear_bit(0, (&sp->tasklet_status));
+				return -1;
+			}
+			clear_bit(0, (&sp->tasklet_status));
+		} else if (level == LOW)
+			tasklet_schedule(&sp->task);
+
+	} else if (fill_rx_buffers(sp, rng_n) == -ENOMEM) {
+			DBG_PRINT(ERR_DBG, "%s:Out of memory", sp->dev->name);
+			DBG_PRINT(ERR_DBG, " in Rx Intr!!\n");
+	}
+	return 0;
+}
+
 static irqreturn_t
 s2io_msi_handle(int irq, void *dev_id, struct pt_regs *regs)
 {
 	struct net_device *dev = (struct net_device *) dev_id;
 	nic_t *sp = dev->priv;
 	int i;
-	int ret;
 	mac_info_t *mac_control;
 	struct config_param *config;
 
@@ -4032,35 +4054,8 @@ s2io_msi_handle(int irq, void *dev_id, struct pt_regs *regs)
 	 * reallocate the buffers from the interrupt handler itself,
 	 * else schedule a tasklet to reallocate the buffers.
 	 */
-	for (i = 0; i < config->rx_ring_num; i++) {
-		if (!sp->lro) {
-			int rxb_size = atomic_read(&sp->rx_bufs_left[i]);
-			int level = rx_buffer_level(sp, rxb_size, i);
-
-			if ((level == PANIC) && (!TASKLET_IN_USE)) {
-				DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", 
-							dev->name);
-				DBG_PRINT(INTR_DBG, "PANIC levels\n");
-				if ((ret = fill_rx_buffers(sp, i)) == -ENOMEM) {
-					DBG_PRINT(ERR_DBG, "%s:Out of memory",
-						  dev->name);
-					DBG_PRINT(ERR_DBG, " in ISR!!\n");
-					clear_bit(0, (&sp->tasklet_status));
-					atomic_dec(&sp->isr_cnt);
-					return IRQ_HANDLED;
-				}
-				clear_bit(0, (&sp->tasklet_status));
-			} else if (level == LOW) {
-				tasklet_schedule(&sp->task);
-			}
-		}
-		else if (fill_rx_buffers(sp, i) == -ENOMEM) {
-				DBG_PRINT(ERR_DBG, "%s:Out of memory",
-							dev->name);
-				DBG_PRINT(ERR_DBG, " in Rx Intr!!\n");
-				break;
-		}
-	}
+	for (i = 0; i < config->rx_ring_num; i++)
+		s2io_chk_rx_buffers(sp, i);
 
 	atomic_dec(&sp->isr_cnt);
 	return IRQ_HANDLED;
@@ -4071,39 +4066,13 @@ s2io_msix_ring_handle(int irq, void *dev_id, struct pt_regs *regs)
 {
 	ring_info_t *ring = (ring_info_t *)dev_id;
 	nic_t *sp = ring->nic;
-	struct net_device *dev = (struct net_device *) dev_id;
-	int rxb_size, level, rng_n;
 
 	atomic_inc(&sp->isr_cnt);
+
 	rx_intr_handler(ring);
-
-	rng_n = ring->ring_no;
-	if (!sp->lro) {
-		rxb_size = atomic_read(&sp->rx_bufs_left[rng_n]);
-		level = rx_buffer_level(sp, rxb_size, rng_n);
-
-		if ((level == PANIC) && (!TASKLET_IN_USE)) {
-			int ret;
-			DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", __FUNCTION__);
-			DBG_PRINT(INTR_DBG, "PANIC levels\n");
-			if ((ret = fill_rx_buffers(sp, rng_n)) == -ENOMEM) {
-				DBG_PRINT(ERR_DBG, "Out of memory in %s",
-					  __FUNCTION__);
-				clear_bit(0, (&sp->tasklet_status));
-				return IRQ_HANDLED;
-			}
-			clear_bit(0, (&sp->tasklet_status));
-		} else if (level == LOW) {
-			tasklet_schedule(&sp->task);
-		}
-	}
-	else if (fill_rx_buffers(sp, rng_n) == -ENOMEM) {
-			DBG_PRINT(ERR_DBG, "%s:Out of memory", dev->name);
-			DBG_PRINT(ERR_DBG, " in Rx Intr!!\n");
-	}
+	s2io_chk_rx_buffers(sp, ring->ring_no);
 
 	atomic_dec(&sp->isr_cnt);
-
 	return IRQ_HANDLED;
 }
 
@@ -4268,37 +4237,8 @@ static irqreturn_t s2io_isr(int irq, void *dev_id, struct pt_regs *regs)
 	 * else schedule a tasklet to reallocate the buffers.
 	 */
 #ifndef CONFIG_S2IO_NAPI
-	for (i = 0; i < config->rx_ring_num; i++) {
-		if (!sp->lro) {
-			int ret;
-			int rxb_size = atomic_read(&sp->rx_bufs_left[i]);
-			int level = rx_buffer_level(sp, rxb_size, i);
-
-			if ((level == PANIC) && (!TASKLET_IN_USE)) {
-				DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", 
-							dev->name);
-				DBG_PRINT(INTR_DBG, "PANIC levels\n");
-				if ((ret = fill_rx_buffers(sp, i)) == -ENOMEM) {
-					DBG_PRINT(ERR_DBG, "%s:Out of memory",
-						  dev->name);
-					DBG_PRINT(ERR_DBG, " in ISR!!\n");
-					clear_bit(0, (&sp->tasklet_status));
-					atomic_dec(&sp->isr_cnt);
-					writeq(org_mask, &bar0->general_int_mask);
-					return IRQ_HANDLED;
-				}
-				clear_bit(0, (&sp->tasklet_status));
-			} else if (level == LOW) {
-				tasklet_schedule(&sp->task);
-			}
-		}
-		else if (fill_rx_buffers(sp, i) == -ENOMEM) {
-				DBG_PRINT(ERR_DBG, "%s:Out of memory",
-							dev->name);
-				DBG_PRINT(ERR_DBG, " in Rx intr!!\n");
-				break;
-		}
-	}
+	for (i = 0; i < config->rx_ring_num; i++)
+		s2io_chk_rx_buffers(sp, i);
 #endif
 	writeq(org_mask, &bar0->general_int_mask);
 	atomic_dec(&sp->isr_cnt);
@@ -4328,6 +4268,8 @@ static void s2io_updt_stats(nic_t *sp)
 			if (cnt == 5)
 				break; /* Updt failed */
 		} while(1);
+	} else {
+		memset(sp->mac_control.stats_info, 0, sizeof(StatInfo_t));
 	}
 }
 
@@ -5779,6 +5721,19 @@ static int s2io_ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
 	return 0;
 }
 
+static u32 s2io_ethtool_op_get_tso(struct net_device *dev)
+{
+	return (dev->features & NETIF_F_TSO) != 0;
+}
+static int s2io_ethtool_op_set_tso(struct net_device *dev, u32 data)
+{
+	if (data)
+		dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
+	else
+		dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+
+	return 0;
+}
 
 static struct ethtool_ops netdev_ethtool_ops = {
 	.get_settings = s2io_ethtool_gset,
@@ -5799,8 +5754,8 @@ static struct ethtool_ops netdev_ethtool_ops = {
 	.get_sg = ethtool_op_get_sg,
 	.set_sg = ethtool_op_set_sg,
 #ifdef NETIF_F_TSO
-	.get_tso = ethtool_op_get_tso,
-	.set_tso = ethtool_op_set_tso,
+	.get_tso = s2io_ethtool_op_get_tso,
+	.set_tso = s2io_ethtool_op_set_tso,
 #endif
 	.get_ufo = ethtool_op_get_ufo,
 	.set_ufo = ethtool_op_set_ufo,
@@ -7438,8 +7393,13 @@ static int verify_l3_l4_lro_capable(lro_t *l_lro, struct iphdr *ip,
 	if (ip->ihl != 5) /* IP has options */
 		return -1;
 
+	/* If we see CE codepoint in IP header, packet is not mergeable */
+	if (INET_ECN_is_ce(ipv4_get_dsfield(ip)))
+		return -1;
+
+	/* If we see ECE or CWR flags in TCP header, packet is not mergeable */
 	if (tcp->urg || tcp->psh || tcp->rst || tcp->syn || tcp->fin ||
-								!tcp->ack) {
+				    tcp->ece || tcp->cwr || !tcp->ack) {
 		/*
 		 * Currently recognize only the ack control word and
 		 * any other control field being set would result in
@@ -7593,18 +7553,16 @@ static void queue_rx_frame(struct sk_buff *skb)
 static void lro_append_pkt(nic_t *sp, lro_t *lro, struct sk_buff *skb,
 			   u32 tcp_len)
 {
-	struct sk_buff *tmp, *first = lro->parent;
+	struct sk_buff *first = lro->parent;
 
 	first->len += tcp_len;
 	first->data_len = lro->frags_len;
 	skb_pull(skb, (skb->len - tcp_len));
-	if ((tmp = skb_shinfo(first)->frag_list)) {
-		while (tmp->next)
-			tmp = tmp->next;
-		tmp->next = skb;
-	}
+	if (skb_shinfo(first)->frag_list)
+		lro->last_frag->next = skb;
 	else
 		skb_shinfo(first)->frag_list = skb;
+	lro->last_frag = skb;
 	sp->mac_control.stats_info->sw_stat.clubbed_frms_cnt++;
 	return;
 }
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 1654f71a9af8..5ed49c3be1e9 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -719,6 +719,7 @@ struct msix_info_st {
 /* Data structure to represent a LRO session */
 typedef struct lro {
 	struct sk_buff	*parent;
+	struct sk_buff  *last_frag;
 	u8		*l2h;
 	struct iphdr	*iph;
 	struct tcphdr	*tcph;
@@ -1012,6 +1013,10 @@ static void queue_rx_frame(struct sk_buff *skb);
 static void update_L3L4_header(nic_t *sp, lro_t *lro);
 static void lro_append_pkt(nic_t *sp, lro_t *lro, struct sk_buff *skb, u32 tcp_len);
 
+#define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
+#define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
+#define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
+
 #define S2IO_PARM_INT(X, def_val) \
 	static unsigned int X = def_val;\
 		module_param(X , uint, 0);

From 817acf5ebd9ea21f134fc90064b0f6686c5b169d Mon Sep 17 00:00:00 2001
From: Sergei Shtylylov <sshtylyov@ru.mvista.com>
Date: Wed, 26 Jul 2006 00:53:53 +0400
Subject: [PATCH 09/11] [PATCH] Stop calling phy_stop_interrupts() twice

Prevent phylib from freeing PHY IRQ twice on closing an eth device:
phy_disconnect() first calls phy_stop_interrupts(), then it calls
phy_stop_machine() which in turn calls phy_stop_interrupts() making the
kernel complain on each bootup...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/net/phy/phy.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 7d5c2233c252..f5aad77288f9 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -419,9 +419,8 @@ void phy_start_machine(struct phy_device *phydev,
 
 /* phy_stop_machine
  *
- * description: Stops the state machine timer, sets the state to
- *   UP (unless it wasn't up yet), and then frees the interrupt,
- *   if it is in use. This function must be called BEFORE
+ * description: Stops the state machine timer, sets the state to UP
+ *   (unless it wasn't up yet). This function must be called BEFORE
  *   phy_detach.
  */
 void phy_stop_machine(struct phy_device *phydev)
@@ -433,9 +432,6 @@ void phy_stop_machine(struct phy_device *phydev)
 		phydev->state = PHY_UP;
 	spin_unlock(&phydev->lock);
 
-	if (phydev->irq != PHY_POLL)
-		phy_stop_interrupts(phydev);
-
 	phydev->adjust_state = NULL;
 }
 

From e454358ace657af953b5b289f49cf733973f41e4 Mon Sep 17 00:00:00 2001
From: Brice Goglin <brice@myri.com>
Date: Sun, 30 Jul 2006 00:14:09 -0400
Subject: [PATCH 10/11] [PATCH] myri10ge - Write the firmware in 256-bytes
 chunks

When writing the firmware to the NIC, the FIFO is 256-bytes long,
so we use 256-bytes chunks and a read to wait until the previous
write is done.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/net/myri10ge/myri10ge.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index c3e52c806b13..198c6f0e0105 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -448,6 +448,7 @@ static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
 	struct mcp_gen_header *hdr;
 	size_t hdr_offset;
 	int status;
+	unsigned i;
 
 	if ((status = request_firmware(&fw, mgp->fw_name, dev)) < 0) {
 		dev_err(dev, "Unable to load %s firmware image via hotplug\n",
@@ -479,18 +480,12 @@ static int myri10ge_load_hotplug_firmware(struct myri10ge_priv *mgp, u32 * size)
 		goto abort_with_fw;
 
 	crc = crc32(~0, fw->data, fw->size);
-	if (mgp->tx.boundary == 2048) {
-		/* Avoid PCI burst on chipset with unaligned completions. */
-		int i;
-		__iomem u32 *ptr = (__iomem u32 *) (mgp->sram +
-						    MYRI10GE_FW_OFFSET);
-		for (i = 0; i < fw->size / 4; i++) {
-			__raw_writel(((u32 *) fw->data)[i], ptr + i);
-			wmb();
-		}
-	} else {
-		myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET, fw->data,
-				  fw->size);
+	for (i = 0; i < fw->size; i += 256) {
+		myri10ge_pio_copy(mgp->sram + MYRI10GE_FW_OFFSET + i,
+				  fw->data + i,
+				  min(256U, (unsigned)(fw->size - i)));
+		mb();
+		readb(mgp->sram);
 	}
 	/* corruption checking is good for parity recovery and buggy chipset */
 	memcpy_fromio(fw->data, mgp->sram + MYRI10GE_FW_OFFSET, fw->size);

From c54772e751c0262073e85a7aa87f093fc0dd44f1 Mon Sep 17 00:00:00 2001
From: Brice Goglin <brice@myri.com>
Date: Sun, 30 Jul 2006 00:14:15 -0400
Subject: [PATCH 11/11] [PATCH] myri10ge - Fix spurious invokations of the
 watchdog reset handler

Fix spurious invocations of the watchdog reset handler.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
 drivers/net/myri10ge/myri10ge.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 198c6f0e0105..06440a86baef 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -177,6 +177,7 @@ struct myri10ge_priv {
 	struct work_struct watchdog_work;
 	struct timer_list watchdog_timer;
 	int watchdog_tx_done;
+	int watchdog_tx_req;
 	int watchdog_resets;
 	int tx_linearized;
 	int pause;
@@ -2542,7 +2543,8 @@ static void myri10ge_watchdog_timer(unsigned long arg)
 
 	mgp = (struct myri10ge_priv *)arg;
 	if (mgp->tx.req != mgp->tx.done &&
-	    mgp->tx.done == mgp->watchdog_tx_done)
+	    mgp->tx.done == mgp->watchdog_tx_done &&
+	    mgp->watchdog_tx_req != mgp->watchdog_tx_done)
 		/* nic seems like it might be stuck.. */
 		schedule_work(&mgp->watchdog_work);
 	else
@@ -2551,6 +2553,7 @@ static void myri10ge_watchdog_timer(unsigned long arg)
 			  jiffies + myri10ge_watchdog_timeout * HZ);
 
 	mgp->watchdog_tx_done = mgp->tx.done;
+	mgp->watchdog_tx_req = mgp->tx.req;
 }
 
 static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)