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Commit 0e396ee4 authored by Linus Torvalds's avatar Linus Torvalds
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Manual merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/jgarzik/netdev-2.6.git 

This is a fixed-up version of the broken "upstream-2.6.13" branch, where
I re-did the manual merge of drivers/net/r8169.c by hand, and made sure
the history is all good.
parents b8112df7 2089a0d3

Documentation/networking/generic-hdlc.txt

+26 −25
Original line number Diff line number Diff line 
Generic HDLC layer

Krzysztof Halasa <khc@pm.waw.pl>

January, 2003





Generic HDLC layer currently supports:

- Frame Relay (ANSI, CCITT and no LMI), with ARP support (no InARP).

  Normal (routed) and Ethernet-bridged (Ethernet device emulation)

1. Frame Relay (ANSI, CCITT, Cisco and no LMI).

   - Normal (routed) and Ethernet-bridged (Ethernet device emulation)

     interfaces can share a single PVC.

- raw HDLC - either IP (IPv4) interface or Ethernet device emulation.

- Cisco HDLC,

- PPP (uses syncppp.c),

- X.25 (uses X.25 routines).

   - ARP support (no InARP support in the kernel - there is an

     experimental InARP user-space daemon available on:

     http://www.kernel.org/pub/linux/utils/net/hdlc/).

2. raw HDLC - either IP (IPv4) interface or Ethernet device emulation.

3. Cisco HDLC.

4. PPP (uses syncppp.c).

5. X.25 (uses X.25 routines).



There are hardware drivers for the following cards:

- C101 by Moxa Technologies Co., Ltd.

- RISCom/N2 by SDL Communications Inc.

- and others, some not in the official kernel.

Generic HDLC is a protocol driver only - it needs a low-level driver

for your particular hardware.



Ethernet device emulation (using HDLC or Frame-Relay PVC) is compatible

with IEEE 802.1Q (VLANs) and 802.1D (Ethernet bridging).
@@ -24,7 +24,7 @@ with IEEE 802.1Q (VLANs) and 802.1D (Ethernet bridging). 
Make sure the hdlc.o and the hardware driver are loaded. It should

create a number of "hdlc" (hdlc0 etc) network devices, one for each

WAN port. You'll need the "sethdlc" utility, get it from:

	http://hq.pm.waw.pl/hdlc/

	http://www.kernel.org/pub/linux/utils/net/hdlc/



Compile sethdlc.c utility:

	gcc -O2 -Wall -o sethdlc sethdlc.c
@@ -52,12 +52,12 @@ Setting interface: 
* v35 | rs232 | x21 | t1 | e1 - sets physical interface for a given port

                                if the card has software-selectable interfaces

  loopback - activate hardware loopback (for testing only)

* clock ext - external clock (uses DTE RX and TX clock)

* clock int - internal clock (provides clock signal on DCE clock output)

* clock txint - TX internal, RX external (provides TX clock on DCE output)

* clock txfromrx - TX clock derived from RX clock (TX clock on DCE output)

* rate - sets clock rate in bps (not required for external clock or

                                 for txfromrx)

* clock ext - both RX clock and TX clock external

* clock int - both RX clock and TX clock internal

* clock txint - RX clock external, TX clock internal

* clock txfromrx - RX clock external, TX clock derived from RX clock

* rate - sets clock rate in bps (for "int" or "txint" clock only)





Setting protocol:
@@ -79,7 +79,7 @@ Setting protocol: 
* x25 - sets X.25 mode



* fr - Frame Relay mode

  lmi ansi / ccitt / none - LMI (link management) type

  lmi ansi / ccitt / cisco / none - LMI (link management) type

  dce - Frame Relay DCE (network) side LMI instead of default DTE (user).

  It has nothing to do with clocks!

  t391 - link integrity verification polling timer (in seconds) - user
@@ -119,13 +119,14 @@ or 






If you have a problem with N2 or C101 card, you can issue the "private"

command to see port's packet descriptor rings (in kernel logs):

If you have a problem with N2, C101 or PLX200SYN card, you can issue the

"private" command to see port's packet descriptor rings (in kernel logs):



	sethdlc hdlc0 private



The hardware driver has to be build with CONFIG_HDLC_DEBUG_RINGS.

The hardware driver has to be build with #define DEBUG_RINGS.

Attaching this info to bug reports would be helpful. Anyway, let me know

if you have problems using this.



For patches and other info look at http://hq.pm.waw.pl/hdlc/
 
For patches and other info look at:

<http://www.kernel.org/pub/linux/utils/net/hdlc/>.

Documentation/networking/multicast.txt

+0 −1
Original line number Diff line number Diff line
@@ -47,7 +47,6 @@ ni52 <------------------ Buggy ------------------> 
ni65		YES		YES		YES		Software(#)

seeq		NO		NO		NO		N/A

sgiseek		<------------------ Buggy ------------------>

sk_g16		NO		NO		YES		N/A

smc-ultra	YES		YES		YES		Hardware

sunlance	YES		YES		YES		Hardware

tulip		YES		YES		YES		Hardware

Documentation/networking/net-modules.txt

+0 −3
Original line number Diff line number Diff line
@@ -284,9 +284,6 @@ ppp.c: 
seeq8005.c: *Not modularized*

	(Probes ports: 0x300, 0x320, 0x340, 0x360)



sk_g16.c: *Not modularized*

	(Probes ports: 0x100, 0x180, 0x208, 0x220m 0x288, 0x320, 0x328, 0x390)



skeleton.c: *Skeleton*



slhc.c:

drivers/net/8139cp.c

+69 −31
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ 


#include <linux/config.h>

#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/kernel.h>

#include <linux/compiler.h>

#include <linux/netdevice.h>
@@ -91,16 +92,17 @@ KERN_INFO DRV_NAME ": 10/100 PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE 


MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");

MODULE_DESCRIPTION("RealTek RTL-8139C+ series 10/100 PCI Ethernet driver");

MODULE_VERSION(DRV_VERSION);

MODULE_LICENSE("GPL");



static int debug = -1;

MODULE_PARM (debug, "i");

module_param(debug, int, 0);

MODULE_PARM_DESC (debug, "8139cp: bitmapped message enable number");



/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).

   The RTL chips use a 64 element hash table based on the Ethernet CRC.  */

static int multicast_filter_limit = 32;

MODULE_PARM (multicast_filter_limit, "i");

module_param(multicast_filter_limit, int, 0);

MODULE_PARM_DESC (multicast_filter_limit, "8139cp: maximum number of filtered multicast addresses");



#define PFX			DRV_NAME ": "
@@ -186,6 +188,9 @@ enum { 
	RingEnd		= (1 << 30), /* End of descriptor ring */

	FirstFrag	= (1 << 29), /* First segment of a packet */

	LastFrag	= (1 << 28), /* Final segment of a packet */

	LargeSend	= (1 << 27), /* TCP Large Send Offload (TSO) */

	MSSShift	= 16,	     /* MSS value position */

	MSSMask		= 0xfff,     /* MSS value: 11 bits */

	TxError		= (1 << 23), /* Tx error summary */

	RxError		= (1 << 20), /* Rx error summary */

	IPCS		= (1 << 18), /* Calculate IP checksum */
@@ -312,7 +317,7 @@ struct cp_desc { 
struct ring_info {

	struct sk_buff		*skb;

	dma_addr_t		mapping;

	unsigned		frag;

	u32			len;

};



struct cp_dma_stats {
@@ -394,6 +399,9 @@ struct cp_private { 
static void __cp_set_rx_mode (struct net_device *dev);

static void cp_tx (struct cp_private *cp);

static void cp_clean_rings (struct cp_private *cp);

#ifdef CONFIG_NET_POLL_CONTROLLER

static void cp_poll_controller(struct net_device *dev);

#endif



static struct pci_device_id cp_pci_tbl[] = {

	{ PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139,
@@ -688,6 +696,19 @@ cp_interrupt (int irq, void *dev_instance, struct pt_regs *regs) 
	return IRQ_HANDLED;

}



#ifdef CONFIG_NET_POLL_CONTROLLER

/*

 * Polling receive - used by netconsole and other diagnostic tools

 * to allow network i/o with interrupts disabled.

 */

static void cp_poll_controller(struct net_device *dev)

{

	disable_irq(dev->irq);

	cp_interrupt(dev->irq, dev, NULL);

	enable_irq(dev->irq);

}

#endif



static void cp_tx (struct cp_private *cp)

{

	unsigned tx_head = cp->tx_head;
@@ -707,7 +728,7 @@ static void cp_tx (struct cp_private *cp) 
			BUG();



		pci_unmap_single(cp->pdev, cp->tx_skb[tx_tail].mapping,

					skb->len, PCI_DMA_TODEVICE);

				 cp->tx_skb[tx_tail].len, PCI_DMA_TODEVICE);



		if (status & LastFrag) {

			if (status & (TxError | TxFIFOUnder)) {
@@ -749,10 +770,11 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) 
{

	struct cp_private *cp = netdev_priv(dev);

	unsigned entry;

	u32 eor;

	u32 eor, flags;

#if CP_VLAN_TAG_USED

	u32 vlan_tag = 0;

#endif

	int mss = 0;



	spin_lock_irq(&cp->lock);
@@ -772,6 +794,9 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) 


	entry = cp->tx_head;

	eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;

	if (dev->features & NETIF_F_TSO)

		mss = skb_shinfo(skb)->tso_size;



	if (skb_shinfo(skb)->nr_frags == 0) {

		struct cp_desc *txd = &cp->tx_ring[entry];

		u32 len;
@@ -783,26 +808,26 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) 
		txd->addr = cpu_to_le64(mapping);

		wmb();



		if (skb->ip_summed == CHECKSUM_HW) {

		flags = eor | len | DescOwn | FirstFrag | LastFrag;



		if (mss)

			flags |= LargeSend | ((mss & MSSMask) << MSSShift);

		else if (skb->ip_summed == CHECKSUM_HW) {

			const struct iphdr *ip = skb->nh.iph;

			if (ip->protocol == IPPROTO_TCP)

				txd->opts1 = cpu_to_le32(eor | len | DescOwn |

							 FirstFrag | LastFrag |

							 IPCS | TCPCS);

				flags |= IPCS | TCPCS;

			else if (ip->protocol == IPPROTO_UDP)

				txd->opts1 = cpu_to_le32(eor | len | DescOwn |

							 FirstFrag | LastFrag |

							 IPCS | UDPCS);

				flags |= IPCS | UDPCS;

			else

				BUG();

		} else

			txd->opts1 = cpu_to_le32(eor | len | DescOwn |

						 FirstFrag | LastFrag);

				WARN_ON(1);	/* we need a WARN() */

		}



		txd->opts1 = cpu_to_le32(flags);

		wmb();



		cp->tx_skb[entry].skb = skb;

		cp->tx_skb[entry].mapping = mapping;

		cp->tx_skb[entry].frag = 0;

		cp->tx_skb[entry].len = len;

		entry = NEXT_TX(entry);

	} else {

		struct cp_desc *txd;
@@ -820,7 +845,7 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) 
					       first_len, PCI_DMA_TODEVICE);

		cp->tx_skb[entry].skb = skb;

		cp->tx_skb[entry].mapping = first_mapping;

		cp->tx_skb[entry].frag = 1;

		cp->tx_skb[entry].len = first_len;

		entry = NEXT_TX(entry);



		for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
@@ -836,16 +861,19 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) 
						 len, PCI_DMA_TODEVICE);

			eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;



			if (skb->ip_summed == CHECKSUM_HW) {

				ctrl = eor | len | DescOwn | IPCS;

			ctrl = eor | len | DescOwn;



			if (mss)

				ctrl |= LargeSend |

					((mss & MSSMask) << MSSShift);

			else if (skb->ip_summed == CHECKSUM_HW) {

				if (ip->protocol == IPPROTO_TCP)

					ctrl |= TCPCS;

					ctrl |= IPCS | TCPCS;

				else if (ip->protocol == IPPROTO_UDP)

					ctrl |= UDPCS;

					ctrl |= IPCS | UDPCS;

				else

					BUG();

			} else

				ctrl = eor | len | DescOwn;

			}



			if (frag == skb_shinfo(skb)->nr_frags - 1)

				ctrl |= LastFrag;
@@ -860,7 +888,7 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev) 


			cp->tx_skb[entry].skb = skb;

			cp->tx_skb[entry].mapping = mapping;

			cp->tx_skb[entry].frag = frag + 2;

			cp->tx_skb[entry].len = len;

			entry = NEXT_TX(entry);

		}
@@ -1074,7 +1102,6 @@ static int cp_refill_rx (struct cp_private *cp) 
		cp->rx_skb[i].mapping = pci_map_single(cp->pdev,

			skb->tail, cp->rx_buf_sz, PCI_DMA_FROMDEVICE);

		cp->rx_skb[i].skb = skb;

		cp->rx_skb[i].frag = 0;



		cp->rx_ring[i].opts2 = 0;

		cp->rx_ring[i].addr = cpu_to_le64(cp->rx_skb[i].mapping);
@@ -1126,9 +1153,6 @@ static void cp_clean_rings (struct cp_private *cp) 
{

	unsigned i;



	memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);

	memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);



	for (i = 0; i < CP_RX_RING_SIZE; i++) {

		if (cp->rx_skb[i].skb) {

			pci_unmap_single(cp->pdev, cp->rx_skb[i].mapping,
@@ -1140,13 +1164,18 @@ static void cp_clean_rings (struct cp_private *cp) 
	for (i = 0; i < CP_TX_RING_SIZE; i++) {

		if (cp->tx_skb[i].skb) {

			struct sk_buff *skb = cp->tx_skb[i].skb;



			pci_unmap_single(cp->pdev, cp->tx_skb[i].mapping,

					 skb->len, PCI_DMA_TODEVICE);

				 	 cp->tx_skb[i].len, PCI_DMA_TODEVICE);

			if (le32_to_cpu(cp->tx_ring[i].opts1) & LastFrag)

				dev_kfree_skb(skb);

			cp->net_stats.tx_dropped++;

		}

	}



	memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);

	memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);



	memset(&cp->rx_skb, 0, sizeof(struct ring_info) * CP_RX_RING_SIZE);

	memset(&cp->tx_skb, 0, sizeof(struct ring_info) * CP_TX_RING_SIZE);

}
@@ -1538,6 +1567,8 @@ static struct ethtool_ops cp_ethtool_ops = { 
	.set_tx_csum		= ethtool_op_set_tx_csum, /* local! */

	.get_sg			= ethtool_op_get_sg,

	.set_sg			= ethtool_op_set_sg,

	.get_tso		= ethtool_op_get_tso,

	.set_tso		= ethtool_op_set_tso,

	.get_regs		= cp_get_regs,

	.get_wol		= cp_get_wol,

	.set_wol		= cp_set_wol,
@@ -1749,6 +1780,9 @@ static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) 
	dev->get_stats = cp_get_stats;

	dev->do_ioctl = cp_ioctl;

	dev->poll = cp_rx_poll;

#ifdef CONFIG_NET_POLL_CONTROLLER

	dev->poll_controller = cp_poll_controller;

#endif

	dev->weight = 16;	/* arbitrary? from NAPI_HOWTO.txt. */

#ifdef BROKEN

	dev->change_mtu = cp_change_mtu;
@@ -1768,6 +1802,10 @@ static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) 
	if (pci_using_dac)

		dev->features |= NETIF_F_HIGHDMA;



#if 0 /* disabled by default until verified */

	dev->features |= NETIF_F_TSO;

#endif



	dev->irq = pdev->irq;



	rc = register_netdev(dev);