patch-2.4.26 linux-2.4.26/drivers/net/bonding/bonding.h

• Lines: 339
• Date: 2004-04-14 06:05:30.000000000 -0700
• Orig file: linux-2.4.25/drivers/net/bonding/bonding.h
• Orig date: 2003-11-28 10:26:20.000000000 -0800

diff -urN linux-2.4.25/drivers/net/bonding/bonding.h linux-2.4.26/drivers/net/bonding/bonding.h
@@ -9,7 +9,7 @@
  *
  *	This software may be used and distributed according to the terms
  *	of the GNU Public License, incorporated herein by reference.
- * 
+ *
  *
  * 2003/03/18 - Amir Noam <amir.noam at intel dot com>,
  *		Tsippy Mendelson <tsippy.mendelson at intel dot com> and
@@ -22,160 +22,231 @@
  *
  * 2003/05/01 - Shmulik Hen <shmulik.hen at intel dot com>
  *	- Added support for Transmit load balancing mode.
+ *
+ * 2003/12/01 - Shmulik Hen <shmulik.hen at intel dot com>
+ *	- Code cleanup and style changes
  */
- 
+
 #ifndef _LINUX_BONDING_H
 #define _LINUX_BONDING_H
 
 #include <linux/timer.h>
 #include <linux/proc_fs.h>
+#include <linux/if_bonding.h>
 #include "bond_3ad.h"
 #include "bond_alb.h"
 
-#ifdef BONDING_DEBUG
+#define DRV_VERSION	"2.6.0"
+#define DRV_RELDATE	"January 14, 2004"
+#define DRV_NAME	"bonding"
+#define DRV_DESCRIPTION	"Ethernet Channel Bonding Driver"
 
-// use this like so: BOND_PRINT_DBG(("foo = %d, bar = %d", foo, bar));
-#define BOND_PRINT_DBG(X)                                     \
-do {                                                          \
-	printk(KERN_DEBUG "%s (%d)", __FUNCTION__, __LINE__); \
-	printk X;                                             \
-	printk("\n");                                         \
-} while(0)
+#define BOND_MAX_ARP_TARGETS	16
 
+#ifdef BONDING_DEBUG
+#define dprintk(fmt, args...) \
+	printk(KERN_DEBUG     \
+	       DRV_NAME ": %s() %d: " fmt, __FUNCTION__, __LINE__ , ## args )
 #else
-#define BOND_PRINT_DBG(X)
+#define dprintk(fmt, args...)
 #endif /* BONDING_DEBUG */
 
-#define IS_UP(dev)  ((((dev)->flags & (IFF_UP)) == (IFF_UP)) && \
-		     (netif_running(dev) && netif_carrier_ok(dev)))
+#define IS_UP(dev)					   \
+	      ((((dev)->flags & IFF_UP) == IFF_UP)	&& \
+	       netif_running(dev)			&& \
+	       netif_carrier_ok(dev))
+
+/*
+ * Checks whether bond is ready for transmit.
+ *
+ * Caller must hold bond->lock
+ */
+#define BOND_IS_OK(bond)			     \
+		   (((bond)->dev->flags & IFF_UP) && \
+		    netif_running((bond)->dev)	  && \
+		    ((bond)->slave_cnt > 0))
 
-/* Checks whether the dev is ready for transmit. We do not check netif_running
- * since a device can be stopped by the driver for short periods of time for
- * maintainance. dev_queue_xmit() handles this by queing the packet until the
- * the dev is running again. Keeping packets ordering requires sticking the
- * same dev as much as possible
- */
-#define SLAVE_IS_OK(slave) \
-		     ((((slave)->dev->flags & (IFF_UP)) == (IFF_UP)) && \
-		     netif_carrier_ok((slave)->dev) && \
+/*
+ * Checks whether slave is ready for transmit.
+ */
+#define SLAVE_IS_OK(slave)			        \
+		    (((slave)->dev->flags & IFF_UP)  && \
+		     netif_running((slave)->dev)     && \
 		     ((slave)->link == BOND_LINK_UP) && \
 		     ((slave)->state == BOND_STATE_ACTIVE))
 
 
-typedef struct slave {
+#define USES_PRIMARY(mode)				\
+		(((mode) == BOND_MODE_ACTIVEBACKUP) ||	\
+		 ((mode) == BOND_MODE_TLB)          ||	\
+		 ((mode) == BOND_MODE_ALB))
+
+/*
+ * Less bad way to call ioctl from within the kernel; this needs to be
+ * done some other way to get the call out of interrupt context.
+ * Needs "ioctl" variable to be supplied by calling context.
+ */
+#define IOCTL(dev, arg, cmd) ({		\
+	int res = 0;			\
+	mm_segment_t fs = get_fs();	\
+	set_fs(get_ds());		\
+	res = ioctl(dev, arg, cmd);	\
+	set_fs(fs);			\
+	res; })
+
+/**
+ * bond_for_each_slave_from - iterate the slaves list from a starting point
+ * @bond:	the bond holding this list.
+ * @pos:	current slave.
+ * @cnt:	counter for max number of moves
+ * @start:	starting point.
+ *
+ * Caller must hold bond->lock
+ */
+#define bond_for_each_slave_from(bond, pos, cnt, start)	\
+	for (cnt = 0, pos = start;				\
+	     cnt < (bond)->slave_cnt;				\
+             cnt++, pos = (pos)->next)
+
+/**
+ * bond_for_each_slave_from_to - iterate the slaves list from start point to stop point
+ * @bond:	the bond holding this list.
+ * @pos:	current slave.
+ * @cnt:	counter for number max of moves
+ * @start:	start point.
+ * @stop:	stop point.
+ *
+ * Caller must hold bond->lock
+ */
+#define bond_for_each_slave_from_to(bond, pos, cnt, start, stop)	\
+	for (cnt = 0, pos = start;					\
+	     ((cnt < (bond)->slave_cnt) && (pos != (stop)->next));	\
+             cnt++, pos = (pos)->next)
+
+/**
+ * bond_for_each_slave - iterate the slaves list from head
+ * @bond:	the bond holding this list.
+ * @pos:	current slave.
+ * @cnt:	counter for max number of moves
+ *
+ * Caller must hold bond->lock
+ */
+#define bond_for_each_slave(bond, pos, cnt)	\
+		bond_for_each_slave_from(bond, pos, cnt, (bond)->first_slave)
+
+
+struct bond_params {
+	int mode;
+	int miimon;
+	int arp_interval;
+	int use_carrier;
+	int updelay;
+	int downdelay;
+	int lacp_fast;
+	char primary[IFNAMSIZ];
+	u32 arp_targets[BOND_MAX_ARP_TARGETS];
+};
+
+struct vlan_entry {
+	struct list_head vlan_list;
+	unsigned short vlan_id;
+};
+
+struct slave {
+	struct net_device *dev; /* first - usefull for panic debug */
 	struct slave *next;
 	struct slave *prev;
-	struct net_device *dev;
-	short  delay;
-	unsigned long jiffies;
-	char   link;    /* one of BOND_LINK_XXXX */
-	char   state;   /* one of BOND_STATE_XXXX */
-	unsigned short original_flags;
-	u32 link_failure_count;
+	s16    delay;
+	u32    jiffies;
+	s8     link;    /* one of BOND_LINK_XXXX */
+	s8     state;   /* one of BOND_STATE_XXXX */
+	u32    original_flags;
+	u32    link_failure_count;
 	u16    speed;
 	u8     duplex;
 	u8     perm_hwaddr[ETH_ALEN];
 	struct ad_slave_info ad_info; /* HUGE - better to dynamically alloc */
 	struct tlb_slave_info tlb_info;
-} slave_t;
+};
 
 /*
  * Here are the locking policies for the two bonding locks:
  *
  * 1) Get bond->lock when reading/writing slave list.
- * 2) Get bond->ptrlock when reading/writing bond->current_slave.
+ * 2) Get bond->curr_slave_lock when reading/writing bond->curr_active_slave.
  *    (It is unnecessary when the write-lock is put with bond->lock.)
- * 3) When we lock with bond->ptrlock, we must lock with bond->lock
+ * 3) When we lock with bond->curr_slave_lock, we must lock with bond->lock
  *    beforehand.
  */
-typedef struct bonding {
-	slave_t *next;
-	slave_t *prev;
-	slave_t *current_slave;
-	slave_t *primary_slave;
-	slave_t *current_arp_slave;
-	__s32 slave_cnt;
+struct bonding {
+	struct   net_device *dev; /* first - usefull for panic debug */
+	struct   slave *first_slave;
+	struct   slave *curr_active_slave;
+	struct   slave *current_arp_slave;
+	struct   slave *primary_slave;
+	s32      slave_cnt; /* never change this value outside the attach/detach wrappers */
 	rwlock_t lock;
-	rwlock_t ptrlock;
-	struct timer_list mii_timer;
-	struct timer_list arp_timer;
-	struct net_device_stats stats;
+	rwlock_t curr_slave_lock;
+	struct   timer_list mii_timer;
+	struct   timer_list arp_timer;
+	s8       kill_timers;
+	struct   net_device_stats stats;
 #ifdef CONFIG_PROC_FS
-	struct proc_dir_entry *bond_proc_file;
-	char procdir_name[IFNAMSIZ];
+	struct   proc_dir_entry *proc_entry;
+	char     proc_file_name[IFNAMSIZ];
 #endif /* CONFIG_PROC_FS */
-	struct list_head bond_list;
-	struct net_device *device;
-	struct dev_mc_list *mc_list;
-	unsigned short flags;
-	struct ad_bond_info ad_info;
-	struct alb_bond_info alb_info;
-} bonding_t;
-
-/* Forward declarations */
-void bond_set_slave_active_flags(slave_t *slave);
-void bond_set_slave_inactive_flags(slave_t *slave);
-
-/**
- * These functions can be used for iterating the slave list
- * (which is circular)
- * Caller must hold bond lock for read
- */
-extern inline struct slave*
-bond_get_first_slave(struct bonding *bond)
-{
-	/* if there are no slaves return NULL */
-	if (bond->next == (slave_t *)bond) {
-		return NULL;
-	}
-	return bond->next;
-}
-
-/**
- * Caller must hold bond lock for read
- */
-extern inline struct slave*
-bond_get_next_slave(struct bonding *bond, struct slave *slave)
-{
-	/* If we have reached the last slave return NULL */
-	if (slave->next == bond->next) {
-		return NULL;
-	}
-	return slave->next;
-}
+	struct   list_head bond_list;
+	struct   dev_mc_list *mc_list;
+	u16      flags;
+	struct   ad_bond_info ad_info;
+	struct   alb_bond_info alb_info;
+	struct   bond_params params;
+	struct   list_head vlan_list;
+	struct   vlan_group *vlgrp;
+};
 
 /**
  * Returns NULL if the net_device does not belong to any of the bond's slaves
  *
  * Caller must hold bond lock for read
  */
-extern inline struct slave*
-bond_get_slave_by_dev(struct bonding *bond, struct net_device *slave_dev)
+extern inline struct slave *bond_get_slave_by_dev(struct bonding *bond, struct net_device *slave_dev)
 {
-	struct slave *our_slave = bond->next;
+	struct slave *slave = NULL;
+	int i;
 
-	/* check if the list of slaves is empty */
-	if (our_slave == (slave_t *)bond) {
-		return NULL;
-	}
-
-	for (; our_slave; our_slave = bond_get_next_slave(bond, our_slave)) {
-		if (our_slave->dev == slave_dev) {
+	bond_for_each_slave(bond, slave, i) {
+		if (slave->dev == slave_dev) {
 			break;
 		}
 	}
-	return our_slave;
+
+	return slave;
 }
 
-extern inline struct bonding*
-bond_get_bond_by_slave(struct slave *slave)
+extern inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
 {
 	if (!slave || !slave->dev->master) {
 		return NULL;
 	}
 
-	return (struct bonding *)(slave->dev->master->priv);
+	return (struct bonding *)slave->dev->master->priv;
 }
 
+extern inline void bond_set_slave_inactive_flags(struct slave *slave)
+{
+	slave->state = BOND_STATE_BACKUP;
+	slave->dev->flags |= IFF_NOARP;
+}
+
+extern inline void bond_set_slave_active_flags(struct slave *slave)
+{
+	slave->state = BOND_STATE_ACTIVE;
+	slave->dev->flags &= ~IFF_NOARP;
+}
+
+struct vlan_entry *bond_next_vlan(struct bonding *bond, struct vlan_entry *curr);
+int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, struct net_device *slave_dev);
+
 #endif /* _LINUX_BONDING_H */