Merge branch 'davem-next' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6

Documentation/networking/bonding.txt

@@ -376,7 +376,8 @@ max_bonds
 	Specifies the number of bonding devices to create for this
 	instance of the bonding driver.  E.g., if max_bonds is 3, and
 	the bonding driver is not already loaded, then bond0, bond1
-	and bond2 will be created.  The default value is 1.
+	and bond2 will be created.  The default value is 1.  Specifying
+	a value of 0 will load bonding, but will not create any devices.
 
 miimon
 
@@ -539,6 +540,17 @@ mode
 		swapped with the new curr_active_slave that was
 		chosen.
 
+num_grat_arp
+
+	Specifies the number of gratuitous ARPs to be issued after a
+	failover event.  One gratuitous ARP is issued immediately after
+	the failover, subsequent ARPs are sent at a rate of one per link
+	monitor interval (arp_interval or miimon, whichever is active).
+
+	The valid range is 0 - 255; the default value is 1.  This option
+	affects only the active-backup mode.  This option was added for
+	bonding version 3.3.0.
+
 primary
 
 	A string (eth0, eth2, etc) specifying which slave is the

MAINTAINERS

@@ -2147,6 +2147,8 @@ P:	Jesse Brandeburg
 M:	jesse.brandeburg@intel.com
 P:	Bruce Allan
 M:	bruce.w.allan@intel.com
+P:	PJ Waskiewicz
+M:	peter.p.waskiewicz.jr@intel.com
 P:	John Ronciak
 M:	john.ronciak@intel.com
 L:	e1000-devel@lists.sourceforge.net
@@ -2690,12 +2692,10 @@ L:	libertas-dev@lists.infradead.org
 S:	Maintained
 
 MARVELL MV643XX ETHERNET DRIVER
-P:	Dale Farnsworth
-M:	dale@farnsworth.org
-P:	Manish Lachwani
-M:	mlachwani@mvista.com
+P:	Lennert Buytenhek
+M:	buytenh@marvell.com
 L:	netdev@vger.kernel.org
-S:	Odd Fixes for 2.4; Maintained for 2.6.
+S:	Supported
 
 MATROX FRAMEBUFFER DRIVER
 P:	Petr Vandrovec
@@ -3233,14 +3233,6 @@ L:	linux-kernel@vger.kernel.org
 T:	git git.infradead.org/battery-2.6.git
 S:	Maintained
 
-POWERPC 4xx EMAC DRIVER
-P:	Eugene Surovegin
-M:	ebs@ebshome.net
-W:	http://kernel.ebshome.net/emac/
-L:	linuxppc-dev@ozlabs.org
-L:	netdev@vger.kernel.org
-S:	Maintained
-
 PNP SUPPORT
 P:	Adam Belay
 M:	ambx1@neo.rr.com

drivers/net/Kconfig

@@ -1255,7 +1255,6 @@ config IBMVETH
 	  To compile this driver as a module, choose M here. The module will
 	  be called ibmveth.
 
-source "drivers/net/ibm_emac/Kconfig"
 source "drivers/net/ibm_newemac/Kconfig"
 
 config NET_PCI

drivers/net/Makefile

@@ -4,7 +4,6 @@
 
 obj-$(CONFIG_E1000) += e1000/
 obj-$(CONFIG_E1000E) += e1000e/
-obj-$(CONFIG_IBM_EMAC) += ibm_emac/
 obj-$(CONFIG_IBM_NEW_EMAC) += ibm_newemac/
 obj-$(CONFIG_IGB) += igb/
 obj-$(CONFIG_IXGBE) += ixgbe/

drivers/net/bonding/bond_main.c

@@ -1189,22 +1189,21 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
 
 		if (new_active) {
 			bond_set_slave_active_flags(new_active);
-		}
 
-		if (new_active && bond->params.fail_over_mac)
-			bond_do_fail_over_mac(bond, new_active, old_active);
+			if (bond->params.fail_over_mac)
+				bond_do_fail_over_mac(bond, new_active,
+						      old_active);
 
-		bond->send_grat_arp = bond->params.num_grat_arp;
-		if (bond->curr_active_slave &&
-			test_bit(__LINK_STATE_LINKWATCH_PENDING,
-					&bond->curr_active_slave->dev->state)) {
-			dprintk("delaying gratuitous arp on %s\n",
-				bond->curr_active_slave->dev->name);
-		} else {
-			if (bond->send_grat_arp > 0) {
-				bond_send_gratuitous_arp(bond);
-				bond->send_grat_arp--;
-			}
+			bond->send_grat_arp = bond->params.num_grat_arp;
+			bond_send_gratuitous_arp(bond);
+
+			write_unlock_bh(&bond->curr_slave_lock);
+			read_unlock(&bond->lock);
+
+			netdev_bonding_change(bond->dev);
+
+			read_lock(&bond->lock);
+			write_lock_bh(&bond->curr_slave_lock);
 		}
 	}
 }
@@ -2235,17 +2234,6 @@ static int __bond_mii_monitor(struct bonding *bond, int have_locks)
 	 * program could monitor the link itself if needed.
 	 */
 
-	if (bond->send_grat_arp) {
-		if (bond->curr_active_slave && test_bit(__LINK_STATE_LINKWATCH_PENDING,
-				&bond->curr_active_slave->dev->state))
-			dprintk("Needs to send gratuitous arp but not yet\n");
-		else {
-			dprintk("sending delayed gratuitous arp on on %s\n",
-				bond->curr_active_slave->dev->name);
-			bond_send_gratuitous_arp(bond);
-			bond->send_grat_arp--;
-		}
-	}
 	read_lock(&bond->curr_slave_lock);
 	oldcurrent = bond->curr_active_slave;
 	read_unlock(&bond->curr_slave_lock);
@@ -2486,6 +2474,13 @@ void bond_mii_monitor(struct work_struct *work)
 		read_unlock(&bond->lock);
 		return;
 	}
+
+	if (bond->send_grat_arp) {
+		read_lock(&bond->curr_slave_lock);
+		bond_send_gratuitous_arp(bond);
+		read_unlock(&bond->curr_slave_lock);
+	}
+
 	if (__bond_mii_monitor(bond, 0)) {
 		read_unlock(&bond->lock);
 		rtnl_lock();
@@ -2651,6 +2646,8 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
 /*
  * Kick out a gratuitous ARP for an IP on the bonding master plus one
  * for each VLAN above us.
+ *
+ * Caller must hold curr_slave_lock for read or better
  */
 static void bond_send_gratuitous_arp(struct bonding *bond)
 {
@@ -2660,9 +2657,13 @@ static void bond_send_gratuitous_arp(struct bonding *bond)
 
 	dprintk("bond_send_grat_arp: bond %s slave %s\n", bond->dev->name,
 				slave ? slave->dev->name : "NULL");
-	if (!slave)
+
+	if (!slave || !bond->send_grat_arp ||
+	    test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state))
 		return;
 
+	bond->send_grat_arp--;
+
 	if (bond->master_ip) {
 		bond_arp_send(slave->dev, ARPOP_REPLY, bond->master_ip,
 				bond->master_ip, 0);
@@ -3166,6 +3167,12 @@ void bond_activebackup_arp_mon(struct work_struct *work)
 	if (bond->slave_cnt == 0)
 		goto re_arm;
 
+	if (bond->send_grat_arp) {
+		read_lock(&bond->curr_slave_lock);
+		bond_send_gratuitous_arp(bond);
+		read_unlock(&bond->curr_slave_lock);
+	}
+
 	if (bond_ab_arp_inspect(bond, delta_in_ticks)) {
 		read_unlock(&bond->lock);
 		rtnl_lock();
@@ -3840,6 +3847,7 @@ static int bond_close(struct net_device *bond_dev)
 
 	write_lock_bh(&bond->lock);
 
+	bond->send_grat_arp = 0;
 
 	/* signal timers not to re-arm */
 	bond->kill_timers = 1;
@@ -4742,11 +4750,11 @@ static int bond_check_params(struct bond_params *params)
 		}
 	}
 
-	if (max_bonds < 1 || max_bonds > INT_MAX) {
+	if (max_bonds < 0 || max_bonds > INT_MAX) {
 		printk(KERN_WARNING DRV_NAME
 		       ": Warning: max_bonds (%d) not in range %d-%d, so it "
 		       "was reset to BOND_DEFAULT_MAX_BONDS (%d)\n",
-		       max_bonds, 1, INT_MAX, BOND_DEFAULT_MAX_BONDS);
+		       max_bonds, 0, INT_MAX, BOND_DEFAULT_MAX_BONDS);
 		max_bonds = BOND_DEFAULT_MAX_BONDS;
 	}
 
@@ -4945,7 +4953,7 @@ static int bond_check_params(struct bond_params *params)
 
 		printk("\n");
 
-	} else {
+	} else if (max_bonds) {
 		/* miimon and arp_interval not set, we need one so things
 		 * work as expected, see bonding.txt for details
 		 */

drivers/net/bonding/bond_sysfs.c

@@ -53,7 +53,6 @@ extern struct bond_parm_tbl arp_validate_tbl[];
 extern struct bond_parm_tbl fail_over_mac_tbl[];
 
 static int expected_refcount = -1;
-static struct class *netdev_class;
 /*--------------------------- Data Structures -----------------------------*/
 
 /* Bonding sysfs lock.  Why can't we just use the subsystem lock?
@@ -1447,19 +1446,9 @@ static struct attribute_group bonding_group = {
  */
 int bond_create_sysfs(void)
 {
-	int ret = 0;
-	struct bonding *firstbond;
-
-	/* get the netdev class pointer */
-	firstbond = container_of(bond_dev_list.next, struct bonding, bond_list);
-	if (!firstbond)
-		return -ENODEV;
-
-	netdev_class = firstbond->dev->dev.class;
-	if (!netdev_class)
-		return -ENODEV;
+	int ret;
 
-	ret = class_create_file(netdev_class, &class_attr_bonding_masters);
+	ret = netdev_class_create_file(&class_attr_bonding_masters);
 	/*
 	 * Permit multiple loads of the module by ignoring failures to
 	 * create the bonding_masters sysfs file.  Bonding devices
@@ -1478,10 +1467,6 @@ int bond_create_sysfs(void)
 			printk(KERN_ERR
 			       "network device named %s already exists in sysfs",
 			       class_attr_bonding_masters.attr.name);
-		else {
-			netdev_class = NULL;
-			return 0;
-		}
 	}
 
 	return ret;
@@ -1493,8 +1478,7 @@ int bond_create_sysfs(void)
  */
 void bond_destroy_sysfs(void)
 {
-	if (netdev_class)
-		class_remove_file(netdev_class, &class_attr_bonding_masters);
+	netdev_class_remove_file(&class_attr_bonding_masters);
 }
 
 /*

drivers/net/bonding/bonding.h

@@ -22,8 +22,8 @@
 #include "bond_3ad.h"
 #include "bond_alb.h"
 
-#define DRV_VERSION	"3.2.5"
-#define DRV_RELDATE	"March 21, 2008"
+#define DRV_VERSION	"3.3.0"
+#define DRV_RELDATE	"June 10, 2008"
 #define DRV_NAME	"bonding"
 #define DRV_DESCRIPTION	"Ethernet Channel Bonding Driver"
 

drivers/net/ibm_emac/Kconfig

-config IBM_EMAC
-	tristate "PowerPC 4xx on-chip Ethernet support"
-	depends on 4xx && !PPC_MERGE
-	help
-	  This driver supports the PowerPC 4xx EMAC family of on-chip
-          Ethernet controllers.
-
-config IBM_EMAC_RXB
-	int "Number of receive buffers"
-	depends on IBM_EMAC
-	default "128"
-
-config IBM_EMAC_TXB
-	int "Number of transmit buffers"
-	depends on IBM_EMAC
-	default "64"
-
-config IBM_EMAC_POLL_WEIGHT
-	int "MAL NAPI polling weight"
-	depends on IBM_EMAC
-	default "32"
-
-config IBM_EMAC_RX_COPY_THRESHOLD
-	int "RX skb copy threshold (bytes)"
-	depends on IBM_EMAC
-	default "256"
-
-config IBM_EMAC_RX_SKB_HEADROOM
-	int "Additional RX skb headroom (bytes)"
-	depends on IBM_EMAC
-	default "0"
-	help
-	  Additional receive skb headroom. Note, that driver
-	  will always reserve at least 2 bytes to make IP header
-	  aligned, so usually there is no need to add any additional
-	  headroom.
-
-	  If unsure, set to 0.
-
-config IBM_EMAC_PHY_RX_CLK_FIX
-	bool "PHY Rx clock workaround"
-	depends on IBM_EMAC && (405EP || 440GX || 440EP || 440GR)
-	help
-	  Enable this if EMAC attached to a PHY which doesn't generate
-	  RX clock if there is no link, if this is the case, you will
-	  see "TX disable timeout" or "RX disable timeout" in the system
-	  log.
-
-	  If unsure, say N.
-
-config IBM_EMAC_DEBUG
-	bool "Debugging"
-	depends on IBM_EMAC
-	default n
-
-config IBM_EMAC_ZMII
-	bool
-	depends on IBM_EMAC && (NP405H || NP405L || 44x)
-	default y
-
-config IBM_EMAC_RGMII
-	bool
-	depends on IBM_EMAC && 440GX
-	default y
-
-config IBM_EMAC_TAH
-	bool
-	depends on IBM_EMAC && 440GX
-	default y
-

drivers/net/ibm_emac/Makefile

-#
-# Makefile for the PowerPC 4xx on-chip ethernet driver
-#
-
-obj-$(CONFIG_IBM_EMAC) += ibm_emac.o
-
-ibm_emac-objs := ibm_emac_mal.o ibm_emac_core.o ibm_emac_phy.o 
-ibm_emac-$(CONFIG_IBM_EMAC_ZMII) += ibm_emac_zmii.o
-ibm_emac-$(CONFIG_IBM_EMAC_RGMII) += ibm_emac_rgmii.o
-ibm_emac-$(CONFIG_IBM_EMAC_TAH) += ibm_emac_tah.o
-ibm_emac-$(CONFIG_IBM_EMAC_DEBUG) += ibm_emac_debug.o

drivers/net/ibm_emac/ibm_emac_core.h

-/*
- * drivers/net/ibm_emac/ibm_emac_core.h
- *
- * Driver for PowerPC 4xx on-chip ethernet controller.
- *
- * Copyright (c) 2004, 2005 Zultys Technologies.
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- *
- * Based on original work by
- *      Armin Kuster <akuster@mvista.com>
- * 	Johnnie Peters <jpeters@mvista.com>
- *      Copyright 2000, 2001 MontaVista Softare Inc.
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-#ifndef __IBM_EMAC_CORE_H_
-#define __IBM_EMAC_CORE_H_
-
-#include <linux/netdevice.h>
-#include <linux/dma-mapping.h>
-#include <asm/ocp.h>
-
-#include "ibm_emac.h"
-#include "ibm_emac_phy.h"
-#include "ibm_emac_zmii.h"
-#include "ibm_emac_rgmii.h"
-#include "ibm_emac_mal.h"
-#include "ibm_emac_tah.h"
-
-#define NUM_TX_BUFF			CONFIG_IBM_EMAC_TXB
-#define NUM_RX_BUFF			CONFIG_IBM_EMAC_RXB
-
-/* Simple sanity check */
-#if NUM_TX_BUFF > 256 || NUM_RX_BUFF > 256
-#error Invalid number of buffer descriptors (greater than 256)
-#endif
-
-// XXX
-#define EMAC_MIN_MTU			46
-#define EMAC_MAX_MTU			9000
-
-/* Maximum L2 header length (VLAN tagged, no FCS) */
-#define EMAC_MTU_OVERHEAD		(6 * 2 + 2 + 4)
-
-/* RX BD size for the given MTU */
-static inline int emac_rx_size(int mtu)
-{
-	if (mtu > ETH_DATA_LEN)
-		return MAL_MAX_RX_SIZE;
-	else
-		return mal_rx_size(ETH_DATA_LEN + EMAC_MTU_OVERHEAD);
-}
-
-#define EMAC_DMA_ALIGN(x)		ALIGN((x), dma_get_cache_alignment())
-
-#define EMAC_RX_SKB_HEADROOM		\
-	EMAC_DMA_ALIGN(CONFIG_IBM_EMAC_RX_SKB_HEADROOM)
-
-/* Size of RX skb for the given MTU */
-static inline int emac_rx_skb_size(int mtu)
-{
-	int size = max(mtu + EMAC_MTU_OVERHEAD, emac_rx_size(mtu));
-	return EMAC_DMA_ALIGN(size + 2) + EMAC_RX_SKB_HEADROOM;
-}
-
-/* RX DMA sync size */
-static inline int emac_rx_sync_size(int mtu)
-{
-	return EMAC_DMA_ALIGN(emac_rx_size(mtu) + 2);
-}
-
-/* Driver statistcs is split into two parts to make it more cache friendly:
- *   - normal statistics (packet count, etc)
- *   - error statistics
- *
- * When statistics is requested by ethtool, these parts are concatenated,
- * normal one goes first.
- *
- * Please, keep these structures in sync with emac_stats_keys.
- */
-
-/* Normal TX/RX Statistics */
-struct ibm_emac_stats {
-	u64 rx_packets;
-	u64 rx_bytes;
-	u64 tx_packets;
-	u64 tx_bytes;
-	u64 rx_packets_csum;
-	u64 tx_packets_csum;
-};
-
-/* Error statistics */
-struct ibm_emac_error_stats {
-	u64 tx_undo;
-
-	/* Software RX Errors */
-	u64 rx_dropped_stack;
-	u64 rx_dropped_oom;
-	u64 rx_dropped_error;
-	u64 rx_dropped_resize;
-	u64 rx_dropped_mtu;
-	u64 rx_stopped;
-	/* BD reported RX errors */
-	u64 rx_bd_errors;
-	u64 rx_bd_overrun;
-	u64 rx_bd_bad_packet;
-	u64 rx_bd_runt_packet;
-	u64 rx_bd_short_event;
-	u64 rx_bd_alignment_error;
-	u64 rx_bd_bad_fcs;
-	u64 rx_bd_packet_too_long;
-	u64 rx_bd_out_of_range;
-	u64 rx_bd_in_range;
-	/* EMAC IRQ reported RX errors */
-	u64 rx_parity;
-	u64 rx_fifo_overrun;
-	u64 rx_overrun;
-	u64 rx_bad_packet;
-	u64 rx_runt_packet;
-	u64 rx_short_event;
-	u64 rx_alignment_error;
-	u64 rx_bad_fcs;
-	u64 rx_packet_too_long;
-	u64 rx_out_of_range;
-	u64 rx_in_range;
-
-	/* Software TX Errors */
-	u64 tx_dropped;
-	/* BD reported TX errors */
-	u64 tx_bd_errors;
-	u64 tx_bd_bad_fcs;
-	u64 tx_bd_carrier_loss;
-	u64 tx_bd_excessive_deferral;
-	u64 tx_bd_excessive_collisions;
-	u64 tx_bd_late_collision;
-	u64 tx_bd_multple_collisions;
-	u64 tx_bd_single_collision;
-	u64 tx_bd_underrun;
-	u64 tx_bd_sqe;
-	/* EMAC IRQ reported TX errors */
-	u64 tx_parity;
-	u64 tx_underrun;
-	u64 tx_sqe;
-	u64 tx_errors;
-};
-
-#define EMAC_ETHTOOL_STATS_COUNT	((sizeof(struct ibm_emac_stats) + \
-					  sizeof(struct ibm_emac_error_stats)) \
-					 / sizeof(u64))
-
-struct ocp_enet_private {
-	struct net_device		*ndev;		/* 0 */
-	struct emac_regs		__iomem *emacp;
-	
-	struct mal_descriptor		*tx_desc;
-	int				tx_cnt;
-	int				tx_slot;
-	int				ack_slot;
-
-	struct mal_descriptor		*rx_desc;
-	int				rx_slot;
-	struct sk_buff			*rx_sg_skb;	/* 1 */
-	int 				rx_skb_size;
-	int				rx_sync_size;
-
-	struct ibm_emac_stats 		stats;
-	struct ocp_device		*tah_dev;
-
-	struct ibm_ocp_mal		*mal;
-	struct mal_commac		commac;
-
-	struct sk_buff			*tx_skb[NUM_TX_BUFF];
-	struct sk_buff			*rx_skb[NUM_RX_BUFF];
-
-	struct ocp_device		*zmii_dev;
-	int				zmii_input;
-	struct ocp_enet_private		*mdio_dev;
-	struct ocp_device		*rgmii_dev;
-	int				rgmii_input;
-
-	struct ocp_def			*def;
-
-	struct mii_phy			phy;
-	struct timer_list		link_timer;
-	int				reset_failed;
-
-	int				stop_timeout;	/* in us */
-
-	struct ibm_emac_error_stats	estats;
-	struct net_device_stats		nstats;
-
-	struct device*			ldev;
-};
-
-/* Ethtool get_regs complex data.
- * We want to get not just EMAC registers, but also MAL, ZMII, RGMII, TAH 
- * when available.
- * 
- * Returned BLOB consists of the ibm_emac_ethtool_regs_hdr, 
- * MAL registers, EMAC registers and optional ZMII, RGMII, TAH registers.
- * Each register component is preceded with emac_ethtool_regs_subhdr.
- * Order of the optional headers follows their relative bit posititions 
- * in emac_ethtool_regs_hdr.components
- */
-#define EMAC_ETHTOOL_REGS_ZMII		0x00000001
-#define EMAC_ETHTOOL_REGS_RGMII		0x00000002
-#define EMAC_ETHTOOL_REGS_TAH		0x00000004
-
-struct emac_ethtool_regs_hdr {
-	u32 components;
-};
-
-struct emac_ethtool_regs_subhdr {
-	u32 version;
-	u32 index;
-};
-
-#endif				/* __IBM_EMAC_CORE_H_ */

drivers/net/ibm_emac/ibm_emac_debug.c

-/*
- * drivers/net/ibm_emac/ibm_emac_debug.c
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines.
- *
- * Copyright (c) 2004, 2005 Zultys Technologies
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/sysrq.h>
-#include <asm/io.h>
-
-#include "ibm_emac_core.h"
-
-static void emac_desc_dump(int idx, struct ocp_enet_private *p)
-{
-	int i;
-	printk("** EMAC%d TX BDs **\n"
-	       " tx_cnt = %d tx_slot = %d ack_slot = %d\n",
-	       idx, p->tx_cnt, p->tx_slot, p->ack_slot);
-	for (i = 0; i < NUM_TX_BUFF / 2; ++i)
-		printk
-		    ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n",
-		     i, p->tx_desc[i].data_ptr, p->tx_skb[i] ? 'V' : ' ',
-		     p->tx_desc[i].ctrl, p->tx_desc[i].data_len,
-		     NUM_TX_BUFF / 2 + i,
-		     p->tx_desc[NUM_TX_BUFF / 2 + i].data_ptr,
-		     p->tx_skb[NUM_TX_BUFF / 2 + i] ? 'V' : ' ',
-		     p->tx_desc[NUM_TX_BUFF / 2 + i].ctrl,
-		     p->tx_desc[NUM_TX_BUFF / 2 + i].data_len);
-
-	printk("** EMAC%d RX BDs **\n"
-	       " rx_slot = %d rx_stopped = %d rx_skb_size = %d rx_sync_size = %d\n"
-	       " rx_sg_skb = 0x%p\n",
-	       idx, p->rx_slot, p->commac.rx_stopped, p->rx_skb_size,
-	       p->rx_sync_size, p->rx_sg_skb);
-	for (i = 0; i < NUM_RX_BUFF / 2; ++i)
-		printk
-		    ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n",
-		     i, p->rx_desc[i].data_ptr, p->rx_skb[i] ? 'V' : ' ',
-		     p->rx_desc[i].ctrl, p->rx_desc[i].data_len,
-		     NUM_RX_BUFF / 2 + i,
-		     p->rx_desc[NUM_RX_BUFF / 2 + i].data_ptr,
-		     p->rx_skb[NUM_RX_BUFF / 2 + i] ? 'V' : ' ',
-		     p->rx_desc[NUM_RX_BUFF / 2 + i].ctrl,
-		     p->rx_desc[NUM_RX_BUFF / 2 + i].data_len);
-}
-
-static void emac_mac_dump(int idx, struct ocp_enet_private *dev)
-{
-	struct emac_regs __iomem *p = dev->emacp;
-
-	printk("** EMAC%d registers **\n"
-	       "MR0 = 0x%08x MR1 = 0x%08x TMR0 = 0x%08x TMR1 = 0x%08x\n"
-	       "RMR = 0x%08x ISR = 0x%08x ISER = 0x%08x\n"
-	       "IAR = %04x%08x VTPID = 0x%04x VTCI = 0x%04x\n"
-	       "IAHT: 0x%04x 0x%04x 0x%04x 0x%04x "
-	       "GAHT: 0x%04x 0x%04x 0x%04x 0x%04x\n"
-	       "LSA = %04x%08x IPGVR = 0x%04x\n"
-	       "STACR = 0x%08x TRTR = 0x%08x RWMR = 0x%08x\n"
-	       "OCTX = 0x%08x OCRX = 0x%08x IPCR = 0x%08x\n",
-	       idx, in_be32(&p->mr0), in_be32(&p->mr1),
-	       in_be32(&p->tmr0), in_be32(&p->tmr1),
-	       in_be32(&p->rmr), in_be32(&p->isr), in_be32(&p->iser),
-	       in_be32(&p->iahr), in_be32(&p->ialr), in_be32(&p->vtpid),
-	       in_be32(&p->vtci),
-	       in_be32(&p->iaht1), in_be32(&p->iaht2), in_be32(&p->iaht3),
-	       in_be32(&p->iaht4),
-	       in_be32(&p->gaht1), in_be32(&p->gaht2), in_be32(&p->gaht3),
-	       in_be32(&p->gaht4),
-	       in_be32(&p->lsah), in_be32(&p->lsal), in_be32(&p->ipgvr),
-	       in_be32(&p->stacr), in_be32(&p->trtr), in_be32(&p->rwmr),
-	       in_be32(&p->octx), in_be32(&p->ocrx), in_be32(&p->ipcr)
-	    );
-
-	emac_desc_dump(idx, dev);
-}
-
-static void emac_mal_dump(struct ibm_ocp_mal *mal)
-{
-	struct ocp_func_mal_data *maldata = mal->def->additions;
-	int i;
-
-	printk("** MAL%d Registers **\n"
-	       "CFG = 0x%08x ESR = 0x%08x IER = 0x%08x\n"
-	       "TX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n"
-	       "RX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n",
-	       mal->def->index,
-	       get_mal_dcrn(mal, MAL_CFG), get_mal_dcrn(mal, MAL_ESR),
-	       get_mal_dcrn(mal, MAL_IER),
-	       get_mal_dcrn(mal, MAL_TXCASR), get_mal_dcrn(mal, MAL_TXCARR),
-	       get_mal_dcrn(mal, MAL_TXEOBISR), get_mal_dcrn(mal, MAL_TXDEIR),
-	       get_mal_dcrn(mal, MAL_RXCASR), get_mal_dcrn(mal, MAL_RXCARR),
-	       get_mal_dcrn(mal, MAL_RXEOBISR), get_mal_dcrn(mal, MAL_RXDEIR)
-	    );
-
-	printk("TX|");
-	for (i = 0; i < maldata->num_tx_chans; ++i) {
-		if (i && !(i % 4))
-			printk("\n   ");
-		printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_TXCTPR(i)));
-	}
-	printk("\nRX|");
-	for (i = 0; i < maldata->num_rx_chans; ++i) {
-		if (i && !(i % 4))
-			printk("\n   ");
-		printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_RXCTPR(i)));
-	}
-	printk("\n   ");
-	for (i = 0; i < maldata->num_rx_chans; ++i) {
-		u32 r = get_mal_dcrn(mal, MAL_RCBS(i));
-		if (i && !(i % 3))
-			printk("\n   ");
-		printk("RCBS%d = 0x%08x (%d) ", i, r, r * 16);
-	}
-	printk("\n");
-}
-
-static struct ocp_enet_private *__emacs[4];
-static struct ibm_ocp_mal *__mals[1];
-
-void emac_dbg_register(int idx, struct ocp_enet_private *dev)
-{
-	unsigned long flags;
-
-	if (idx >= ARRAY_SIZE(__emacs)) {
-		printk(KERN_WARNING
-		       "invalid index %d when registering EMAC for debugging\n",
-		       idx);
-		return;
-	}
-
-	local_irq_save(flags);
-	__emacs[idx] = dev;
-	local_irq_restore(flags);
-}
-
-void mal_dbg_register(int idx, struct ibm_ocp_mal *mal)
-{
-	unsigned long flags;
-
-	if (idx >= ARRAY_SIZE(__mals)) {
-		printk(KERN_WARNING
-		       "invalid index %d when registering MAL for debugging\n",
-		       idx);
-		return;
-	}
-
-	local_irq_save(flags);
-	__mals[idx] = mal;
-	local_irq_restore(flags);
-}
-
-void emac_dbg_dump_all(void)
-{
-	unsigned int i;
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	for (i = 0; i < ARRAY_SIZE(__mals); ++i)
-		if (__mals[i])
-			emac_mal_dump(__mals[i]);
-
-	for (i = 0; i < ARRAY_SIZE(__emacs); ++i)
-		if (__emacs[i])
-			emac_mac_dump(i, __emacs[i]);
-
-	local_irq_restore(flags);
-}
-
-#if defined(CONFIG_MAGIC_SYSRQ)
-static void emac_sysrq_handler(int key, struct tty_struct *tty)
-{
-	emac_dbg_dump_all();
-}
-
-static struct sysrq_key_op emac_sysrq_op = {
-	.handler = emac_sysrq_handler,
-	.help_msg = "emaC",
-	.action_msg = "Show EMAC(s) status",
-};
-
-int __init emac_init_debug(void)
-{
-	return register_sysrq_key('c', &emac_sysrq_op);
-}
-
-void __exit emac_fini_debug(void)
-{
-	unregister_sysrq_key('c', &emac_sysrq_op);
-}
-
-#else
-int __init emac_init_debug(void)
-{
-	return 0;
-}
-void __exit emac_fini_debug(void)
-{
-}
-#endif				/* CONFIG_MAGIC_SYSRQ */

drivers/net/ibm_emac/ibm_emac_debug.h

-/*
- * drivers/net/ibm_emac/ibm_emac_debug.h
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines.
- *
- * Copyright (c) 2004, 2005 Zultys Technologies
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-#ifndef __IBM_EMAC_DEBUG_H_
-#define __IBM_EMAC_DEBUG_H_
-
-#include <linux/init.h>
-#include "ibm_emac_core.h"
-#include "ibm_emac_mal.h"
-
-#if defined(CONFIG_IBM_EMAC_DEBUG)
-void emac_dbg_register(int idx, struct ocp_enet_private *dev);
-void mal_dbg_register(int idx, struct ibm_ocp_mal *mal);
-int emac_init_debug(void) __init;
-void emac_fini_debug(void) __exit;
-void emac_dbg_dump_all(void);
-# define DBG_LEVEL		1
-#else
-# define emac_dbg_register(x,y) ((void)0)
-# define mal_dbg_register(x,y)	((void)0)
-# define emac_init_debug()	((void)0)
-# define emac_fini_debug()	((void)0)
-# define emac_dbg_dump_all()	((void)0)
-# define DBG_LEVEL		0
-#endif
-
-#if DBG_LEVEL > 0
-#  define DBG(f,x...)		printk("emac" f, ##x)
-#  define MAL_DBG(f,x...)	printk("mal" f, ##x)
-#  define ZMII_DBG(f,x...)	printk("zmii" f, ##x)
-#  define RGMII_DBG(f,x...)	printk("rgmii" f, ##x)
-#  define NL			"\n"
-#else
-#  define DBG(f,x...)		((void)0)
-#  define MAL_DBG(f,x...)	((void)0)
-#  define ZMII_DBG(f,x...)	((void)0)
-#  define RGMII_DBG(f,x...)	((void)0)
-#endif
-#if DBG_LEVEL > 1
-#  define DBG2(f,x...) 		DBG(f, ##x)
-#  define MAL_DBG2(f,x...) 	MAL_DBG(f, ##x)
-#  define ZMII_DBG2(f,x...) 	ZMII_DBG(f, ##x)
-#  define RGMII_DBG2(f,x...) 	RGMII_DBG(f, ##x)
-#else
-#  define DBG2(f,x...) 		((void)0)
-#  define MAL_DBG2(f,x...) 	((void)0)
-#  define ZMII_DBG2(f,x...) 	((void)0)
-#  define RGMII_DBG2(f,x...) 	((void)0)
-#endif
-
-#endif				/* __IBM_EMAC_DEBUG_H_ */

drivers/net/ibm_emac/ibm_emac_mal.h

-/*
- * drivers/net/ibm_emac/ibm_emac_mal.h
- *
- * Memory Access Layer (MAL) support
- * 
- * Copyright (c) 2004, 2005 Zultys Technologies.
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- *
- * Based on original work by
- *      Armin Kuster <akuster@mvista.com>
- *      Copyright 2002 MontaVista Softare Inc.
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-#ifndef __IBM_EMAC_MAL_H_
-#define __IBM_EMAC_MAL_H_
-
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/netdevice.h>
-
-#include <asm/io.h>
-#include <asm/dcr.h>
-
-/*
- * These MAL "versions" probably aren't the real versions IBM uses for these 
- * MAL cores, I assigned them just to make #ifdefs in this file nicer and 
- * reflect the fact that 40x and 44x have slightly different MALs. --ebs
- */
-#if defined(CONFIG_405GP) || defined(CONFIG_405GPR) || defined(CONFIG_405EP) || \
-    defined(CONFIG_440EP) || defined(CONFIG_440GR) || defined(CONFIG_NP405H)
-#define MAL_VERSION		1
-#elif defined(CONFIG_440GP) || defined(CONFIG_440GX) || defined(CONFIG_440SP) || \
-      defined(CONFIG_440SPE)
-#define MAL_VERSION		2
-#else
-#error "Unknown SoC, please check chip manual and choose MAL 'version'"
-#endif
-
-/* MALx DCR registers */
-#define	MAL_CFG			0x00
-#define	  MAL_CFG_SR		0x80000000
-#define   MAL_CFG_PLBB		0x00004000
-#define   MAL_CFG_OPBBL		0x00000080
-#define   MAL_CFG_EOPIE		0x00000004
-#define   MAL_CFG_LEA		0x00000002
-#define   MAL_CFG_SD		0x00000001
-#if MAL_VERSION == 1
-#define   MAL_CFG_PLBP_MASK	0x00c00000
-#define   MAL_CFG_PLBP_10	0x00800000
-#define   MAL_CFG_GA		0x00200000
-#define   MAL_CFG_OA		0x00100000
-#define   MAL_CFG_PLBLE		0x00080000
-#define   MAL_CFG_PLBT_MASK	0x00078000
-#define   MAL_CFG_DEFAULT	(MAL_CFG_PLBP_10 | MAL_CFG_PLBT_MASK)
-#elif MAL_VERSION == 2
-#define   MAL_CFG_RPP_MASK	0x00c00000
-#define   MAL_CFG_RPP_10	0x00800000
-#define   MAL_CFG_RMBS_MASK	0x00300000
-#define   MAL_CFG_WPP_MASK	0x000c0000
-#define   MAL_CFG_WPP_10	0x00080000
-#define   MAL_CFG_WMBS_MASK	0x00030000
-#define   MAL_CFG_PLBLE		0x00008000
-#define   MAL_CFG_DEFAULT	(MAL_CFG_RMBS_MASK | MAL_CFG_WMBS_MASK | \
-				 MAL_CFG_RPP_10 | MAL_CFG_WPP_10)
-#else
-#error "Unknown MAL version"
-#endif
-
-#define MAL_ESR			0x01
-#define   MAL_ESR_EVB		0x80000000
-#define   MAL_ESR_CIDT		0x40000000
-#define   MAL_ESR_CID_MASK	0x3e000000
-#define   MAL_ESR_CID_SHIFT	25
-#define   MAL_ESR_DE		0x00100000
-#define   MAL_ESR_OTE		0x00040000
-#define   MAL_ESR_OSE		0x00020000
-#define   MAL_ESR_PEIN		0x00010000
-#define   MAL_ESR_DEI		0x00000010
-#define   MAL_ESR_OTEI		0x00000004
-#define   MAL_ESR_OSEI		0x00000002
-#define   MAL_ESR_PBEI		0x00000001
-#if MAL_VERSION == 1
-#define   MAL_ESR_ONE		0x00080000
-#define   MAL_ESR_ONEI		0x00000008
-#elif MAL_VERSION == 2
-#define   MAL_ESR_PTE		0x00800000
-#define   MAL_ESR_PRE		0x00400000
-#define   MAL_ESR_PWE		0x00200000
-#define   MAL_ESR_PTEI		0x00000080
-#define   MAL_ESR_PREI		0x00000040
-#define   MAL_ESR_PWEI		0x00000020
-#else
-#error "Unknown MAL version"
-#endif
-
-#define MAL_IER			0x02
-#define   MAL_IER_DE		0x00000010
-#define   MAL_IER_OTE		0x00000004
-#define   MAL_IER_OE		0x00000002
-#define   MAL_IER_PE		0x00000001
-#if MAL_VERSION == 1
-#define   MAL_IER_NWE		0x00000008
-#define   MAL_IER_SOC_EVENTS	MAL_IER_NWE
-#elif MAL_VERSION == 2
-#define   MAL_IER_PT		0x00000080
-#define   MAL_IER_PRE		0x00000040
-#define   MAL_IER_PWE		0x00000020
-#define   MAL_IER_SOC_EVENTS	(MAL_IER_PT | MAL_IER_PRE | MAL_IER_PWE)
-#else
-#error "Unknown MAL version"
-#endif
-#define   MAL_IER_EVENTS	(MAL_IER_SOC_EVENTS | MAL_IER_OTE | \
-				 MAL_IER_OTE | MAL_IER_OE | MAL_IER_PE)
-
-#define MAL_TXCASR		0x04
-#define MAL_TXCARR		0x05
-#define MAL_TXEOBISR		0x06
-#define MAL_TXDEIR		0x07
-#define MAL_RXCASR		0x10
-#define MAL_RXCARR		0x11
-#define MAL_RXEOBISR		0x12
-#define MAL_RXDEIR		0x13
-#define MAL_TXCTPR(n)		((n) + 0x20)
-#define MAL_RXCTPR(n)		((n) + 0x40)
-#define MAL_RCBS(n)		((n) + 0x60)
-
-/* In reality MAL can handle TX buffers up to 4095 bytes long, 
- * but this isn't a good round number :) 		 --ebs
- */
-#define MAL_MAX_TX_SIZE		4080
-#define MAL_MAX_RX_SIZE		4080
-
-static inline int mal_rx_size(int len)
-{
-	len = (len + 0xf) & ~0xf;
-	return len > MAL_MAX_RX_SIZE ? MAL_MAX_RX_SIZE : len;
-}
-
-static inline int mal_tx_chunks(int len)
-{
-	return (len + MAL_MAX_TX_SIZE - 1) / MAL_MAX_TX_SIZE;
-}
-
-#define MAL_CHAN_MASK(n)	(0x80000000 >> (n))
-
-/* MAL Buffer Descriptor structure */
-struct mal_descriptor {
-	u16 ctrl;		/* MAL / Commac status control bits */
-	u16 data_len;		/* Max length is 4K-1 (12 bits)     */
-	u32 data_ptr;		/* pointer to actual data buffer    */
-};
-
-/* the following defines are for the MadMAL status and control registers. */
-/* MADMAL transmit and receive status/control bits  */
-#define MAL_RX_CTRL_EMPTY	0x8000
-#define MAL_RX_CTRL_WRAP	0x4000
-#define MAL_RX_CTRL_CM		0x2000
-#define MAL_RX_CTRL_LAST	0x1000
-#define MAL_RX_CTRL_FIRST	0x0800
-#define MAL_RX_CTRL_INTR	0x0400
-#define MAL_RX_CTRL_SINGLE	(MAL_RX_CTRL_LAST | MAL_RX_CTRL_FIRST)
-#define MAL_IS_SINGLE_RX(ctrl)	(((ctrl) & MAL_RX_CTRL_SINGLE) == MAL_RX_CTRL_SINGLE)
-
-#define MAL_TX_CTRL_READY	0x8000
-#define MAL_TX_CTRL_WRAP	0x4000
-#define MAL_TX_CTRL_CM		0x2000
-#define MAL_TX_CTRL_LAST	0x1000
-#define MAL_TX_CTRL_INTR	0x0400
-
-struct mal_commac_ops {
-	void	(*poll_tx) (void *dev);
-	int	(*poll_rx) (void *dev, int budget);
-	int	(*peek_rx) (void *dev);
-	void	(*rxde) (void *dev);
-};
-
-struct mal_commac {
-	struct mal_commac_ops	*ops;
-	void			*dev;
-	struct list_head	poll_list;
-	int			rx_stopped;
-
-	u32			tx_chan_mask;
-	u32			rx_chan_mask;
-	struct list_head	list;
-};
-
-struct ibm_ocp_mal {
-	dcr_host_t		dcrhost;
-
-	struct list_head	poll_list;
-	struct napi_struct	napi;
-
-	struct list_head	list;
-	u32			tx_chan_mask;
-	u32			rx_chan_mask;
-
-	dma_addr_t		bd_dma;
-	struct mal_descriptor	*bd_virt;
-
-	struct ocp_def		*def;
-};
-
-static inline u32 get_mal_dcrn(struct ibm_ocp_mal *mal, int reg)
-{
-	return dcr_read(mal->dcrhost, reg);
-}
-
-static inline void set_mal_dcrn(struct ibm_ocp_mal *mal, int reg, u32 val)
-{
-	dcr_write(mal->dcrhost, reg, val);
-}
-
-/* Register MAL devices */
-int mal_init(void) __init;
-void mal_exit(void) __exit;
-
-int mal_register_commac(struct ibm_ocp_mal *mal,
-			struct mal_commac *commac) __init;
-void mal_unregister_commac(struct ibm_ocp_mal *mal, struct mal_commac *commac);
-int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel, unsigned long size);
-
-/* Returns BD ring offset for a particular channel
-   (in 'struct mal_descriptor' elements)
-*/
-int mal_tx_bd_offset(struct ibm_ocp_mal *mal, int channel);
-int mal_rx_bd_offset(struct ibm_ocp_mal *mal, int channel);
-
-void mal_enable_tx_channel(struct ibm_ocp_mal *mal, int channel);
-void mal_disable_tx_channel(struct ibm_ocp_mal *mal, int channel);
-void mal_enable_rx_channel(struct ibm_ocp_mal *mal, int channel);
-void mal_disable_rx_channel(struct ibm_ocp_mal *mal, int channel);
-
-/* Add/remove EMAC to/from MAL polling list */
-void mal_poll_add(struct ibm_ocp_mal *mal, struct mal_commac *commac);
-void mal_poll_del(struct ibm_ocp_mal *mal, struct mal_commac *commac);
-
-/* Ethtool MAL registers */
-struct ibm_mal_regs {
-	u32 tx_count;
-	u32 rx_count;
-
-	u32 cfg;
-	u32 esr;
-	u32 ier;
-	u32 tx_casr;
-	u32 tx_carr;
-	u32 tx_eobisr;
-	u32 tx_deir;
-	u32 rx_casr;
-	u32 rx_carr;
-	u32 rx_eobisr;
-	u32 rx_deir;
-	u32 tx_ctpr[32];
-	u32 rx_ctpr[32];
-	u32 rcbs[32];
-};
-
-int mal_get_regs_len(struct ibm_ocp_mal *mal);
-void *mal_dump_regs(struct ibm_ocp_mal *mal, void *buf);
-
-#endif				/* __IBM_EMAC_MAL_H_ */

drivers/net/ibm_emac/ibm_emac_phy.c

-/*
- * drivers/net/ibm_emac/ibm_emac_phy.c
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, PHY support.
- * Borrowed from sungem_phy.c, though I only kept the generic MII
- * driver for now.
- * 
- * This file should be shared with other drivers or eventually
- * merged as the "low level" part of miilib
- * 
- * (c) 2003, Benjamin Herrenscmidt (benh@kernel.crashing.org)
- * (c) 2004-2005, Eugene Surovegin <ebs@ebshome.net>
- *
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/netdevice.h>
-#include <linux/mii.h>
-#include <linux/ethtool.h>
-#include <linux/delay.h>
-
-#include <asm/ocp.h>
-
-#include "ibm_emac_core.h"
-#include "ibm_emac_phy.h"
-
-static inline int phy_read(struct mii_phy *phy, int reg)
-{
-	return phy->mdio_read(phy->dev, phy->address, reg);
-}
-
-static inline void phy_write(struct mii_phy *phy, int reg, int val)
-{
-	phy->mdio_write(phy->dev, phy->address, reg, val);
-}
-
-/*
- * polls MII_BMCR until BMCR_RESET bit clears or operation times out.
- *
- * returns:
- *	>= 0 => success, value in BMCR returned to caller
- *	-EBUSY => failure, RESET bit never cleared
- *	otherwise => failure, lower level PHY read failed
- */
-static int mii_spin_reset_complete(struct mii_phy *phy)
-{
-	int val;
-	int limit = 10000;
-
-	while (limit--) {
-		val = phy_read(phy, MII_BMCR);
-		if (val >= 0 && !(val & BMCR_RESET))
-			return val;	/* success */
-		udelay(10);
-	}
-	if (val & BMCR_RESET)
-		val = -EBUSY;
-
-	if (net_ratelimit())
-		printk(KERN_ERR "emac%d: PHY reset timeout (%d)\n", 
-		       ((struct ocp_enet_private *)phy->dev->priv)->def->index,
-		       val);
-	return val;		    
-}
-
-int mii_reset_phy(struct mii_phy *phy)
-{
-	int val;
-
-	val = phy_read(phy, MII_BMCR);
-	val &= ~BMCR_ISOLATE;
-	val |= BMCR_RESET;
-	phy_write(phy, MII_BMCR, val);
-
-	udelay(300);
-
-	val = mii_spin_reset_complete(phy);
-	if (val >= 0 && (val & BMCR_ISOLATE))
-		phy_write(phy, MII_BMCR, val & ~BMCR_ISOLATE);
-
-	return val < 0;
-}
-
-static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise)
-{
-	int ctl, adv;
-
-	phy->autoneg = AUTONEG_ENABLE;
-	phy->speed = SPEED_10;
-	phy->duplex = DUPLEX_HALF;
-	phy->pause = phy->asym_pause = 0;
-	phy->advertising = advertise;
-
-	/* Setup standard advertise */
-	adv = phy_read(phy, MII_ADVERTISE);
-	if (adv < 0)
-		return adv;
-	adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP |
-		 ADVERTISE_PAUSE_ASYM);
-	if (advertise & ADVERTISED_10baseT_Half)
-		adv |= ADVERTISE_10HALF;
-	if (advertise & ADVERTISED_10baseT_Full)
-		adv |= ADVERTISE_10FULL;
-	if (advertise & ADVERTISED_100baseT_Half)
-		adv |= ADVERTISE_100HALF;
-	if (advertise & ADVERTISED_100baseT_Full)
-		adv |= ADVERTISE_100FULL;
-	if (advertise & ADVERTISED_Pause)
-		adv |= ADVERTISE_PAUSE_CAP;
-	if (advertise & ADVERTISED_Asym_Pause)
-		adv |= ADVERTISE_PAUSE_ASYM;
-	phy_write(phy, MII_ADVERTISE, adv);
-
-	if (phy->features &
-	    (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half)) {
-		adv = phy_read(phy, MII_CTRL1000);
-		if (adv < 0)
-			return adv;
-		adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
-		if (advertise & ADVERTISED_1000baseT_Full)
-			adv |= ADVERTISE_1000FULL;
-		if (advertise & ADVERTISED_1000baseT_Half)
-			adv |= ADVERTISE_1000HALF;
-		phy_write(phy, MII_CTRL1000, adv);
-	}
-
-	/* Start/Restart aneg */
-	/* on some PHYs (e.g. National DP83843) a write to MII_ADVERTISE
-	 * causes BMCR_RESET to be set on the next read of MII_BMCR, which
-	 * if not checked for causes the PHY to be reset below */
-	ctl = mii_spin_reset_complete(phy);
-	if (ctl < 0)
-		return ctl;
-
-	ctl |= BMCR_ANENABLE | BMCR_ANRESTART;
-	phy_write(phy, MII_BMCR, ctl);
-
-	return 0;
-}
-
-static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd)
-{
-	int ctl;
-
-	phy->autoneg = AUTONEG_DISABLE;
-	phy->speed = speed;
-	phy->duplex = fd;
-	phy->pause = phy->asym_pause = 0;
-
-	/* First reset the PHY */
-	mii_reset_phy(phy);
-
-	ctl = phy_read(phy, MII_BMCR);
-	if (ctl < 0)
-		return ctl;
-	ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_ANENABLE | BMCR_SPEED1000);
-
-	/* Select speed & duplex */
-	switch (speed) {
-	case SPEED_10:
-		break;
-	case SPEED_100:
-		ctl |= BMCR_SPEED100;
-		break;
-	case SPEED_1000:
-		ctl |= BMCR_SPEED1000;
-		break;
-	default:
-		return -EINVAL;
-	}
-	if (fd == DUPLEX_FULL)
-		ctl |= BMCR_FULLDPLX;
-	phy_write(phy, MII_BMCR, ctl);
-
-	return 0;
-}
-
-static int genmii_poll_link(struct mii_phy *phy)
-{
-	int status;
-
-	/* Clear latched value with dummy read */
-	phy_read(phy, MII_BMSR);
-	status = phy_read(phy, MII_BMSR);
-	if (status < 0 || (status & BMSR_LSTATUS) == 0)
-		return 0;
-	if (phy->autoneg == AUTONEG_ENABLE && !(status & BMSR_ANEGCOMPLETE))
-		return 0;
-	return 1;
-}
-
-static int genmii_read_link(struct mii_phy *phy)
-{
-	if (phy->autoneg == AUTONEG_ENABLE) {
-		int glpa = 0;
-		int lpa = phy_read(phy, MII_LPA) & phy_read(phy, MII_ADVERTISE);
-		if (lpa < 0)
-			return lpa;
-
-		if (phy->features &
-		    (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half)) {
-			int adv = phy_read(phy, MII_CTRL1000);
-			glpa = phy_read(phy, MII_STAT1000);
-
-			if (glpa < 0 || adv < 0)
-				return adv;
-
-			glpa &= adv << 2;
-		}
-
-		phy->speed = SPEED_10;
-		phy->duplex = DUPLEX_HALF;
-		phy->pause = phy->asym_pause = 0;
-
-		if (glpa & (LPA_1000FULL | LPA_1000HALF)) {
-			phy->speed = SPEED_1000;
-			if (glpa & LPA_1000FULL)
-				phy->duplex = DUPLEX_FULL;
-		} else if (lpa & (LPA_100FULL | LPA_100HALF)) {
-			phy->speed = SPEED_100;
-			if (lpa & LPA_100FULL)
-				phy->duplex = DUPLEX_FULL;
-		} else if (lpa & LPA_10FULL)
-			phy->duplex = DUPLEX_FULL;
-
-		if (phy->duplex == DUPLEX_FULL) {
-			phy->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
-			phy->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
-		}
-	} else {
-		int bmcr = phy_read(phy, MII_BMCR);
-		if (bmcr < 0)
-			return bmcr;
-
-		if (bmcr & BMCR_FULLDPLX)
-			phy->duplex = DUPLEX_FULL;
-		else
-			phy->duplex = DUPLEX_HALF;
-		if (bmcr & BMCR_SPEED1000)
-			phy->speed = SPEED_1000;
-		else if (bmcr & BMCR_SPEED100)
-			phy->speed = SPEED_100;
-		else
-			phy->speed = SPEED_10;
-
-		phy->pause = phy->asym_pause = 0;
-	}
-	return 0;
-}
-
-/* Generic implementation for most 10/100/1000 PHYs */
-static struct mii_phy_ops generic_phy_ops = {
-	.setup_aneg	= genmii_setup_aneg,
-	.setup_forced	= genmii_setup_forced,
-	.poll_link	= genmii_poll_link,
-	.read_link	= genmii_read_link
-};
-
-static struct mii_phy_def genmii_phy_def = {
-	.phy_id		= 0x00000000,
-	.phy_id_mask	= 0x00000000,
-	.name		= "Generic MII",
-	.ops		= &generic_phy_ops
-};
-
-/* CIS8201 */
-#define MII_CIS8201_10BTCSR	0x16
-#define  TENBTCSR_ECHO_DISABLE	0x2000
-#define MII_CIS8201_EPCR	0x17
-#define  EPCR_MODE_MASK		0x3000
-#define  EPCR_GMII_MODE		0x0000
-#define  EPCR_RGMII_MODE	0x1000
-#define  EPCR_TBI_MODE		0x2000
-#define  EPCR_RTBI_MODE		0x3000
-#define MII_CIS8201_ACSR	0x1c
-#define  ACSR_PIN_PRIO_SELECT	0x0004
-
-static int cis8201_init(struct mii_phy *phy)
-{
-	int epcr;
-
-	epcr = phy_read(phy, MII_CIS8201_EPCR);
-	if (epcr < 0)
-		return epcr;
-
-	epcr &= ~EPCR_MODE_MASK;
-
-	switch (phy->mode) {
-	case PHY_MODE_TBI:
-		epcr |= EPCR_TBI_MODE;
-		break;
-	case PHY_MODE_RTBI:
-		epcr |= EPCR_RTBI_MODE;
-		break;
-	case PHY_MODE_GMII:
-		epcr |= EPCR_GMII_MODE;
-		break;
-	case PHY_MODE_RGMII:
-	default:
-		epcr |= EPCR_RGMII_MODE;
-	}
-
-	phy_write(phy, MII_CIS8201_EPCR, epcr);
-	
-	/* MII regs override strap pins */
-	phy_write(phy, MII_CIS8201_ACSR, 
-		  phy_read(phy, MII_CIS8201_ACSR) | ACSR_PIN_PRIO_SELECT);
-
-	/* Disable TX_EN -> CRS echo mode, otherwise 10/HDX doesn't work */
-	phy_write(phy, MII_CIS8201_10BTCSR,
-		  phy_read(phy, MII_CIS8201_10BTCSR) | TENBTCSR_ECHO_DISABLE);
-
-	return 0;
-}
-
-static struct mii_phy_ops cis8201_phy_ops = {
-	.init		= cis8201_init,
-	.setup_aneg	= genmii_setup_aneg,
-	.setup_forced	= genmii_setup_forced,
-	.poll_link	= genmii_poll_link,
-	.read_link	= genmii_read_link
-};
-
-static struct mii_phy_def cis8201_phy_def = {
-	.phy_id		= 0x000fc410,
-	.phy_id_mask	= 0x000ffff0,
-	.name		= "CIS8201 Gigabit Ethernet",
-	.ops		= &cis8201_phy_ops
-};
-
-static struct mii_phy_def *mii_phy_table[] = {
-	&cis8201_phy_def,
-	&genmii_phy_def,
-	NULL
-};
-
-int mii_phy_probe(struct mii_phy *phy, int address)
-{
-	struct mii_phy_def *def;
-	int i;
-	int id;
-
-	phy->autoneg = AUTONEG_DISABLE;
-	phy->advertising = 0;
-	phy->address = address;
-	phy->speed = SPEED_10;
-	phy->duplex = DUPLEX_HALF;
-	phy->pause = phy->asym_pause = 0;
-
-	/* Take PHY out of isolate mode and reset it. */
-	if (mii_reset_phy(phy))
-		return -ENODEV;
-
-	/* Read ID and find matching entry */
-	id = (phy_read(phy, MII_PHYSID1) << 16) | phy_read(phy, MII_PHYSID2);
-	if (id < 0)
-		return -ENODEV;
-	for (i = 0; (def = mii_phy_table[i]) != NULL; i++)
-		if ((id & def->phy_id_mask) == def->phy_id)
-			break;
-	/* Should never be NULL (we have a generic entry), but... */
-	if (!def)
-		return -ENODEV;
-
-	phy->def = def;
-
-	/* Determine PHY features if needed */
-	phy->features = def->features;
-	if (!phy->features) {
-		u16 bmsr = phy_read(phy, MII_BMSR);
-		if (bmsr & BMSR_ANEGCAPABLE)
-			phy->features |= SUPPORTED_Autoneg;
-		if (bmsr & BMSR_10HALF)
-			phy->features |= SUPPORTED_10baseT_Half;
-		if (bmsr & BMSR_10FULL)
-			phy->features |= SUPPORTED_10baseT_Full;
-		if (bmsr & BMSR_100HALF)
-			phy->features |= SUPPORTED_100baseT_Half;
-		if (bmsr & BMSR_100FULL)
-			phy->features |= SUPPORTED_100baseT_Full;
-		if (bmsr & BMSR_ESTATEN) {
-			u16 esr = phy_read(phy, MII_ESTATUS);
-			if (esr & ESTATUS_1000_TFULL)
-				phy->features |= SUPPORTED_1000baseT_Full;
-			if (esr & ESTATUS_1000_THALF)
-				phy->features |= SUPPORTED_1000baseT_Half;
-		}
-		phy->features |= SUPPORTED_MII;
-	}
-
-	/* Setup default advertising */
-	phy->advertising = phy->features;
-
-	return 0;
-}
-
-MODULE_LICENSE("GPL");

drivers/net/ibm_emac/ibm_emac_phy.h

-/*
- * drivers/net/ibm_emac/ibm_emac_phy.h
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, PHY support
- *
- * Benjamin Herrenschmidt <benh@kernel.crashing.org>
- * February 2003
- *
- * Minor additions by Eugene Surovegin <ebs@ebshome.net>, 2004
- *
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- * This file basically duplicates sungem_phy.{c,h} with different PHYs
- * supported. I'm looking into merging that in a single mii layer more
- * flexible than mii.c 
- */
-
-#ifndef _IBM_OCP_PHY_H_
-#define _IBM_OCP_PHY_H_
-
-struct mii_phy;
-
-/* Operations supported by any kind of PHY */
-struct mii_phy_ops {
-	int (*init) (struct mii_phy * phy);
-	int (*suspend) (struct mii_phy * phy, int wol_options);
-	int (*setup_aneg) (struct mii_phy * phy, u32 advertise);
-	int (*setup_forced) (struct mii_phy * phy, int speed, int fd);
-	int (*poll_link) (struct mii_phy * phy);
-	int (*read_link) (struct mii_phy * phy);
-};
-
-/* Structure used to statically define an mii/gii based PHY */
-struct mii_phy_def {
-	u32 phy_id;		/* Concatenated ID1 << 16 | ID2 */
-	u32 phy_id_mask;	/* Significant bits */
-	u32 features;		/* Ethtool SUPPORTED_* defines or 
-				   0 for autodetect */
-	int magic_aneg;		/* Autoneg does all speed test for us */
-	const char *name;
-	const struct mii_phy_ops *ops;
-};
-
-/* An instance of a PHY, partially borrowed from mii_if_info */
-struct mii_phy {
-	struct mii_phy_def *def;
-	u32 advertising;	/* Ethtool ADVERTISED_* defines */
-	u32 features;		/* Copied from mii_phy_def.features 
-				   or determined automaticaly */
-	int address;		/* PHY address */
-	int mode;		/* PHY mode */
-
-	/* 1: autoneg enabled, 0: disabled */
-	int autoneg;
-
-	/* forced speed & duplex (no autoneg)
-	 * partner speed & duplex & pause (autoneg)
-	 */
-	int speed;
-	int duplex;
-	int pause;
-	int asym_pause;
-
-	/* Provided by host chip */
-	struct net_device *dev;
-	int (*mdio_read) (struct net_device * dev, int addr, int reg);
-	void (*mdio_write) (struct net_device * dev, int addr, int reg,
-			    int val);
-};
-
-/* Pass in a struct mii_phy with dev, mdio_read and mdio_write
- * filled, the remaining fields will be filled on return
- */
-int mii_phy_probe(struct mii_phy *phy, int address);
-int mii_reset_phy(struct mii_phy *phy);
-
-#endif				/* _IBM_OCP_PHY_H_ */

drivers/net/ibm_emac/ibm_emac_rgmii.c

-/*
- * drivers/net/ibm_emac/ibm_emac_rgmii.c
- *
- * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
- *
- * Copyright (c) 2004, 2005 Zultys Technologies.
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- *
- * Based on original work by
- * 	Matt Porter <mporter@kernel.crashing.org>
- * 	Copyright 2004 MontaVista Software, Inc.
- * 
- * This program is free software; you can redistribute  it and/or modify it
- * under  the terms of  the GNU General  Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- *
- */
-#include <linux/kernel.h>
-#include <linux/ethtool.h>
-#include <asm/io.h>
-
-#include "ibm_emac_core.h"
-#include "ibm_emac_debug.h"
-
-/* RGMIIx_FER */
-#define RGMII_FER_MASK(idx)	(0x7 << ((idx) * 4))
-#define RGMII_FER_RTBI(idx)	(0x4 << ((idx) * 4))
-#define RGMII_FER_RGMII(idx)	(0x5 << ((idx) * 4))
-#define RGMII_FER_TBI(idx)	(0x6 << ((idx) * 4))
-#define RGMII_FER_GMII(idx)	(0x7 << ((idx) * 4))
-
-/* RGMIIx_SSR */
-#define RGMII_SSR_MASK(idx)	(0x7 << ((idx) * 8))
-#define RGMII_SSR_100(idx)	(0x2 << ((idx) * 8))
-#define RGMII_SSR_1000(idx)	(0x4 << ((idx) * 8))
-
-/* RGMII bridge supports only GMII/TBI and RGMII/RTBI PHYs */
-static inline int rgmii_valid_mode(int phy_mode)
-{
-	return  phy_mode == PHY_MODE_GMII ||
-		phy_mode == PHY_MODE_RGMII ||
-		phy_mode == PHY_MODE_TBI ||
-		phy_mode == PHY_MODE_RTBI;
-}
-
-static inline const char *rgmii_mode_name(int mode)
-{
-	switch (mode) {
-	case PHY_MODE_RGMII:
-		return "RGMII";
-	case PHY_MODE_TBI:
-		return "TBI";
-	case PHY_MODE_GMII:
-		return "GMII";
-	case PHY_MODE_RTBI:
-		return "RTBI";
-	default:
-		BUG();
-	}
-}
-
-static inline u32 rgmii_mode_mask(int mode, int input)
-{
-	switch (mode) {
-	case PHY_MODE_RGMII:
-		return RGMII_FER_RGMII(input);
-	case PHY_MODE_TBI:
-		return RGMII_FER_TBI(input);
-	case PHY_MODE_GMII:
-		return RGMII_FER_GMII(input);
-	case PHY_MODE_RTBI:
-		return RGMII_FER_RTBI(input);
-	default:
-		BUG();
-	}
-}
-
-static int __init rgmii_init(struct ocp_device *ocpdev, int input, int mode)
-{
-	struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
-	struct rgmii_regs *p;
-
-	RGMII_DBG("%d: init(%d, %d)" NL, ocpdev->def->index, input, mode);
-
-	if (!dev) {
-		dev = kzalloc(sizeof(struct ibm_ocp_rgmii), GFP_KERNEL);
-		if (!dev) {
-			printk(KERN_ERR
-			       "rgmii%d: couldn't allocate device structure!\n",
-			       ocpdev->def->index);
-			return -ENOMEM;
-		}
-
-		p = (struct rgmii_regs *)ioremap(ocpdev->def->paddr,
-						 sizeof(struct rgmii_regs));
-		if (!p) {
-			printk(KERN_ERR
-			       "rgmii%d: could not ioremap device registers!\n",
-			       ocpdev->def->index);
-			kfree(dev);
-			return -ENOMEM;
-		}
-
-		dev->base = p;
-		ocp_set_drvdata(ocpdev, dev);
-
-		/* Disable all inputs by default */
-		out_be32(&p->fer, 0);
-	} else
-		p = dev->base;
-
-	/* Enable this input */
-	out_be32(&p->fer, in_be32(&p->fer) | rgmii_mode_mask(mode, input));
-
-	printk(KERN_NOTICE "rgmii%d: input %d in %s mode\n",
-	       ocpdev->def->index, input, rgmii_mode_name(mode));
-
-	++dev->users;
-	return 0;
-}
-
-int __init rgmii_attach(void *emac)
-{
-	struct ocp_enet_private *dev = emac;
-	struct ocp_func_emac_data *emacdata = dev->def->additions;
-
-	/* Check if we need to attach to a RGMII */
-	if (emacdata->rgmii_idx >= 0 && rgmii_valid_mode(emacdata->phy_mode)) {
-		dev->rgmii_input = emacdata->rgmii_mux;
-		dev->rgmii_dev =
-		    ocp_find_device(OCP_VENDOR_IBM, OCP_FUNC_RGMII,
-				    emacdata->rgmii_idx);
-		if (!dev->rgmii_dev) {
-			printk(KERN_ERR "emac%d: unknown rgmii%d!\n",
-			       dev->def->index, emacdata->rgmii_idx);
-			return -ENODEV;
-		}
-		if (rgmii_init
-		    (dev->rgmii_dev, dev->rgmii_input, emacdata->phy_mode)) {
-			printk(KERN_ERR
-			       "emac%d: rgmii%d initialization failed!\n",
-			       dev->def->index, emacdata->rgmii_idx);
-			return -ENODEV;
-		}
-	}
-	return 0;
-}
-
-void rgmii_set_speed(struct ocp_device *ocpdev, int input, int speed)
-{
-	struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
-	u32 ssr = in_be32(&dev->base->ssr) & ~RGMII_SSR_MASK(input);
-
-	RGMII_DBG("%d: speed(%d, %d)" NL, ocpdev->def->index, input, speed);
-
-	if (speed == SPEED_1000)
-		ssr |= RGMII_SSR_1000(input);
-	else if (speed == SPEED_100)
-		ssr |= RGMII_SSR_100(input);
-
-	out_be32(&dev->base->ssr, ssr);
-}
-
-void __rgmii_fini(struct ocp_device *ocpdev, int input)
-{
-	struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
-	BUG_ON(!dev || dev->users == 0);
-
-	RGMII_DBG("%d: fini(%d)" NL, ocpdev->def->index, input);
-
-	/* Disable this input */
-	out_be32(&dev->base->fer,
-		 in_be32(&dev->base->fer) & ~RGMII_FER_MASK(input));
-
-	if (!--dev->users) {
-		/* Free everything if this is the last user */
-		ocp_set_drvdata(ocpdev, NULL);
-		iounmap((void *)dev->base);
-		kfree(dev);
-	}
-}
-
-int __rgmii_get_regs_len(struct ocp_device *ocpdev)
-{
-	return sizeof(struct emac_ethtool_regs_subhdr) +
-	    sizeof(struct rgmii_regs);
-}
-
-void *rgmii_dump_regs(struct ocp_device *ocpdev, void *buf)
-{
-	struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev);
-	struct emac_ethtool_regs_subhdr *hdr = buf;
-	struct rgmii_regs *regs = (struct rgmii_regs *)(hdr + 1);
-
-	hdr->version = 0;
-	hdr->index = ocpdev->def->index;
-	memcpy_fromio(regs, dev->base, sizeof(struct rgmii_regs));
-	return regs + 1;
-}

drivers/net/sky2.h

@@ -441,6 +441,7 @@ enum {
  	CHIP_ID_YUKON_FE   = 0xb7, /* YUKON-2 FE */
  	CHIP_ID_YUKON_FE_P = 0xb8, /* YUKON-2 FE+ */
 	CHIP_ID_YUKON_SUPR = 0xb9, /* YUKON-2 Supreme */
+	CHIP_ID_YUKON_UL_2 = 0xba, /* YUKON-2 Ultra 2 */
 };
 enum yukon_ec_rev {
 	CHIP_REV_YU_EC_A1    = 0,  /* Chip Rev. for Yukon-EC A1/A0 */

include/linux/netdevice.h

@@ -1479,6 +1479,7 @@ extern void		__dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct
 extern void		dev_set_promiscuity(struct net_device *dev, int inc);
 extern void		dev_set_allmulti(struct net_device *dev, int inc);
 extern void		netdev_state_change(struct net_device *dev);
+extern void		netdev_bonding_change(struct net_device *dev);
 extern void		netdev_features_change(struct net_device *dev);
 /* Load a device via the kmod */
 extern void		dev_load(struct net *net, const char *name);
@@ -1505,6 +1506,9 @@ extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
 extern void dev_seq_stop(struct seq_file *seq, void *v);
 #endif
 
+extern int netdev_class_create_file(struct class_attribute *class_attr);
+extern void netdev_class_remove_file(struct class_attribute *class_attr);
+
 extern void linkwatch_run_queue(void);
 
 extern int netdev_compute_features(unsigned long all, unsigned long one);

include/linux/notifier.h

@@ -197,6 +197,7 @@ static inline int notifier_to_errno(int ret)
 #define NETDEV_GOING_DOWN	0x0009
 #define NETDEV_CHANGENAME	0x000A
 #define NETDEV_FEAT_CHANGE	0x000B
+#define NETDEV_BONDING_FAILOVER 0x000C
 
 #define SYS_DOWN	0x0001	/* Notify of system down */
 #define SYS_RESTART	SYS_DOWN

net/core/dev.c

@@ -961,6 +961,12 @@ void netdev_state_change(struct net_device *dev)
 	}
 }
 
+void netdev_bonding_change(struct net_device *dev)
+{
+	call_netdevice_notifiers(NETDEV_BONDING_FAILOVER, dev);
+}
+EXPORT_SYMBOL(netdev_bonding_change);
+
 /**
  *	dev_load 	- load a network module
  *	@net: the applicable net namespace