diff options
Diffstat (limited to 'drivers/net/bonding/bond_sysfs.c')
| -rw-r--r-- | drivers/net/bonding/bond_sysfs.c | 463 |
1 files changed, 231 insertions, 232 deletions
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index d2873153522..55bf34f59bb 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -1,4 +1,3 @@ - /* * Copyright(c) 2004-2005 Intel Corporation. All rights reserved. * @@ -34,33 +33,14 @@ #include <linux/ctype.h> #include <linux/inet.h> #include <linux/rtnetlink.h> +#include <linux/etherdevice.h> #include <net/net_namespace.h> #include "bonding.h" -#define to_dev(obj) container_of(obj,struct device,kobj) +#define to_dev(obj) container_of(obj, struct device, kobj) #define to_bond(cd) ((struct bonding *)(netdev_priv(to_net_dev(cd)))) -/*---------------------------- Declarations -------------------------------*/ - -static int expected_refcount = -1; -/*--------------------------- Data Structures -----------------------------*/ - -/* Bonding sysfs lock. Why can't we just use the subsystem lock? - * Because kobject_register tries to acquire the subsystem lock. If - * we already hold the lock (which we would if the user was creating - * a new bond through the sysfs interface), we deadlock. - * This lock is only needed when deleting a bond - we need to make sure - * that we don't collide with an ongoing ioctl. - */ - -struct rw_semaphore bonding_rwsem; - - - - -/*------------------------------ Functions --------------------------------*/ - /* * "show" function for the bond_masters attribute. * The class parameter is ignored. @@ -70,7 +50,7 @@ static ssize_t bonding_show_bonds(struct class *cls, char *buf) int res = 0; struct bonding *bond; - down_read(&(bonding_rwsem)); + rtnl_lock(); list_for_each_entry(bond, &bond_dev_list, bond_list) { if (res > (PAGE_SIZE - IFNAMSIZ)) { @@ -84,10 +64,22 @@ static ssize_t bonding_show_bonds(struct class *cls, char *buf) } if (res) buf[res-1] = '\n'; /* eat the leftover space */ - up_read(&(bonding_rwsem)); + + rtnl_unlock(); return res; } +static struct net_device *bond_get_by_name(const char *ifname) +{ + struct bonding *bond; + + list_for_each_entry(bond, &bond_dev_list, bond_list) { + if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0) + return bond->dev; + } + return NULL; +} + /* * "store" function for the bond_masters attribute. This is what * creates and deletes entire bonds. @@ -96,12 +88,12 @@ static ssize_t bonding_show_bonds(struct class *cls, char *buf) * */ -static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t count) +static ssize_t bonding_store_bonds(struct class *cls, + const char *buffer, size_t count) { char command[IFNAMSIZ + 1] = {0, }; char *ifname; int rv, res = count; - struct bonding *bond; sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ ifname = command + 1; @@ -110,67 +102,48 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t goto err_no_cmd; if (command[0] == '+') { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s is being created...\n", ifname); - rv = bond_create(ifname, &bonding_defaults); + rv = bond_create(ifname); if (rv) { - printk(KERN_INFO DRV_NAME ": Bond creation failed.\n"); + pr_info(DRV_NAME ": Bond creation failed.\n"); res = rv; } - goto out; - } + } else if (command[0] == '-') { + struct net_device *bond_dev; - if (command[0] == '-') { rtnl_lock(); - down_write(&bonding_rwsem); - - list_for_each_entry(bond, &bond_dev_list, bond_list) - if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) { - /* check the ref count on the bond's kobject. - * If it's > expected, then there's a file open, - * and we have to fail. - */ - if (atomic_read(&bond->dev->dev.kobj.kref.refcount) - > expected_refcount){ - printk(KERN_INFO DRV_NAME - ": Unable remove bond %s due to open references.\n", - ifname); - res = -EPERM; - goto out_unlock; - } - printk(KERN_INFO DRV_NAME - ": %s is being deleted...\n", - bond->dev->name); - bond_destroy(bond); - goto out_unlock; - } - - printk(KERN_ERR DRV_NAME - ": unable to delete non-existent bond %s\n", ifname); - res = -ENODEV; - goto out_unlock; - } - -err_no_cmd: - printk(KERN_ERR DRV_NAME - ": no command found in bonding_masters. Use +ifname or -ifname.\n"); - return -EPERM; - -out_unlock: - up_write(&bonding_rwsem); - rtnl_unlock(); + bond_dev = bond_get_by_name(ifname); + if (bond_dev) { + pr_info(DRV_NAME ": %s is being deleted...\n", + ifname); + unregister_netdevice(bond_dev); + } else { + pr_err(DRV_NAME ": unable to delete non-existent %s\n", + ifname); + res = -ENODEV; + } + rtnl_unlock(); + } else + goto err_no_cmd; /* Always return either count or an error. If you return 0, you'll * get called forever, which is bad. */ -out: return res; + +err_no_cmd: + pr_err(DRV_NAME ": no command found in bonding_masters." + " Use +ifname or -ifname.\n"); + return -EPERM; } + /* class attribute for bond_masters file. This ends up in /sys/class/net */ static CLASS_ATTR(bonding_masters, S_IWUSR | S_IRUGO, bonding_show_bonds, bonding_store_bonds); -int bond_create_slave_symlinks(struct net_device *master, struct net_device *slave) +int bond_create_slave_symlinks(struct net_device *master, + struct net_device *slave) { char linkname[IFNAMSIZ+7]; int ret = 0; @@ -181,19 +154,20 @@ int bond_create_slave_symlinks(struct net_device *master, struct net_device *sla if (ret) return ret; /* next, create a link from the master to the slave */ - sprintf(linkname,"slave_%s",slave->name); + sprintf(linkname, "slave_%s", slave->name); ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), linkname); return ret; } -void bond_destroy_slave_symlinks(struct net_device *master, struct net_device *slave) +void bond_destroy_slave_symlinks(struct net_device *master, + struct net_device *slave) { char linkname[IFNAMSIZ+7]; sysfs_remove_link(&(slave->dev.kobj), "master"); - sprintf(linkname,"slave_%s",slave->name); + sprintf(linkname, "slave_%s", slave->name); sysfs_remove_link(&(master->dev.kobj), linkname); } @@ -251,8 +225,8 @@ static ssize_t bonding_store_slaves(struct device *d, /* Note: We can't hold bond->lock here, as bond_create grabs it. */ - rtnl_lock(); - down_write(&(bonding_rwsem)); + if (!rtnl_trylock()) + return restart_syscall(); sscanf(buffer, "%16s", command); /* IFNAMSIZ*/ ifname = command + 1; @@ -264,46 +238,47 @@ static ssize_t bonding_store_slaves(struct device *d, /* Got a slave name in ifname. Is it already in the list? */ found = 0; - read_lock(&bond->lock); - bond_for_each_slave(bond, slave, i) - if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) { - printk(KERN_ERR DRV_NAME - ": %s: Interface %s is already enslaved!\n", - bond->dev->name, ifname); - ret = -EPERM; - read_unlock(&bond->lock); - goto out; - } - read_unlock(&bond->lock); - printk(KERN_INFO DRV_NAME ": %s: Adding slave %s.\n", - bond->dev->name, ifname); - dev = dev_get_by_name(&init_net, ifname); + /* FIXME: get netns from sysfs object */ + dev = __dev_get_by_name(&init_net, ifname); if (!dev) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Interface %s does not exist!\n", bond->dev->name, ifname); - ret = -EPERM; + ret = -ENODEV; goto out; } - else - dev_put(dev); if (dev->flags & IFF_UP) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Error: Unable to enslave %s " "because it is already up.\n", bond->dev->name, dev->name); ret = -EPERM; goto out; } + + read_lock(&bond->lock); + bond_for_each_slave(bond, slave, i) + if (slave->dev == dev) { + pr_err(DRV_NAME + ": %s: Interface %s is already enslaved!\n", + bond->dev->name, ifname); + ret = -EPERM; + read_unlock(&bond->lock); + goto out; + } + read_unlock(&bond->lock); + + pr_info(DRV_NAME ": %s: Adding slave %s.\n", + bond->dev->name, ifname); + /* If this is the first slave, then we need to set the master's hardware address to be the same as the slave's. */ - if (!(*((u32 *) & (bond->dev->dev_addr[0])))) { + if (is_zero_ether_addr(bond->dev->dev_addr)) memcpy(bond->dev->dev_addr, dev->dev_addr, dev->addr_len); - } /* Set the slave's MTU to match the bond */ original_mtu = dev->mtu; @@ -317,9 +292,9 @@ static ssize_t bonding_store_slaves(struct device *d, bond_for_each_slave(bond, slave, i) if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) slave->original_mtu = original_mtu; - if (res) { + if (res) ret = res; - } + goto out; } @@ -333,7 +308,7 @@ static ssize_t bonding_store_slaves(struct device *d, break; } if (dev) { - printk(KERN_INFO DRV_NAME ": %s: Removing slave %s\n", + pr_info(DRV_NAME ": %s: Removing slave %s\n", bond->dev->name, dev->name); res = bond_release(bond->dev, dev); if (res) { @@ -342,9 +317,9 @@ static ssize_t bonding_store_slaves(struct device *d, } /* set the slave MTU to the default */ dev_set_mtu(dev, original_mtu); - } - else { - printk(KERN_ERR DRV_NAME ": unable to remove non-existent slave %s for bond %s.\n", + } else { + pr_err(DRV_NAME ": unable to remove non-existent" + " slave %s for bond %s.\n", ifname, bond->dev->name); ret = -ENODEV; } @@ -352,16 +327,16 @@ static ssize_t bonding_store_slaves(struct device *d, } err_no_cmd: - printk(KERN_ERR DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); + pr_err(DRV_NAME ": no command found in slaves file for bond %s. Use +ifname or -ifname.\n", bond->dev->name); ret = -EPERM; out: - up_write(&(bonding_rwsem)); rtnl_unlock(); return ret; } -static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, bonding_store_slaves); +static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves, + bonding_store_slaves); /* * Show and set the bonding mode. The bond interface must be down to @@ -385,16 +360,15 @@ static ssize_t bonding_store_mode(struct device *d, struct bonding *bond = to_bond(d); if (bond->dev->flags & IFF_UP) { - printk(KERN_ERR DRV_NAME - ": unable to update mode of %s because interface is up.\n", - bond->dev->name); + pr_err(DRV_NAME ": unable to update mode of %s" + " because interface is up.\n", bond->dev->name); ret = -EPERM; goto out; } new_value = bond_parse_parm(buf, bond_mode_tbl); if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Ignoring invalid mode value %.*s.\n", bond->dev->name, (int)strlen(buf) - 1, buf); @@ -409,17 +383,19 @@ static ssize_t bonding_store_mode(struct device *d, bond->params.mode = new_value; bond_set_mode_ops(bond, bond->params.mode); - printk(KERN_INFO DRV_NAME ": %s: setting mode to %s (%d).\n", - bond->dev->name, bond_mode_tbl[new_value].modename, new_value); + pr_info(DRV_NAME ": %s: setting mode to %s (%d).\n", + bond->dev->name, bond_mode_tbl[new_value].modename, + new_value); } out: return ret; } -static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, bonding_show_mode, bonding_store_mode); +static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, + bonding_show_mode, bonding_store_mode); /* - * Show and set the bonding transmit hash method. The bond interface must be down to - * change the xmit hash policy. + * Show and set the bonding transmit hash method. + * The bond interface must be down to change the xmit hash policy. */ static ssize_t bonding_show_xmit_hash(struct device *d, struct device_attribute *attr, @@ -440,7 +416,7 @@ static ssize_t bonding_store_xmit_hash(struct device *d, struct bonding *bond = to_bond(d); if (bond->dev->flags & IFF_UP) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME "%s: Interface is up. Unable to update xmit policy.\n", bond->dev->name); ret = -EPERM; @@ -449,7 +425,7 @@ static ssize_t bonding_store_xmit_hash(struct device *d, new_value = bond_parse_parm(buf, xmit_hashtype_tbl); if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Ignoring invalid xmit hash policy value %.*s.\n", bond->dev->name, (int)strlen(buf) - 1, buf); @@ -458,13 +434,15 @@ static ssize_t bonding_store_xmit_hash(struct device *d, } else { bond->params.xmit_policy = new_value; bond_set_mode_ops(bond, bond->params.mode); - printk(KERN_INFO DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", - bond->dev->name, xmit_hashtype_tbl[new_value].modename, new_value); + pr_info(DRV_NAME ": %s: setting xmit hash policy to %s (%d).\n", + bond->dev->name, + xmit_hashtype_tbl[new_value].modename, new_value); } out: return ret; } -static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, bonding_show_xmit_hash, bonding_store_xmit_hash); +static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR, + bonding_show_xmit_hash, bonding_store_xmit_hash); /* * Show and set arp_validate. @@ -489,39 +467,41 @@ static ssize_t bonding_store_arp_validate(struct device *d, new_value = bond_parse_parm(buf, arp_validate_tbl); if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Ignoring invalid arp_validate value %s\n", bond->dev->name, buf); return -EINVAL; } if (new_value && (bond->params.mode != BOND_MODE_ACTIVEBACKUP)) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: arp_validate only supported in active-backup mode.\n", bond->dev->name); return -EINVAL; } - printk(KERN_INFO DRV_NAME ": %s: setting arp_validate to %s (%d).\n", + pr_info(DRV_NAME ": %s: setting arp_validate to %s (%d).\n", bond->dev->name, arp_validate_tbl[new_value].modename, new_value); - if (!bond->params.arp_validate && new_value) { + if (!bond->params.arp_validate && new_value) bond_register_arp(bond); - } else if (bond->params.arp_validate && !new_value) { + else if (bond->params.arp_validate && !new_value) bond_unregister_arp(bond); - } bond->params.arp_validate = new_value; return count; } -static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, bonding_store_arp_validate); +static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate, + bonding_store_arp_validate); /* * Show and store fail_over_mac. User only allowed to change the * value when there are no slaves. */ -static ssize_t bonding_show_fail_over_mac(struct device *d, struct device_attribute *attr, char *buf) +static ssize_t bonding_show_fail_over_mac(struct device *d, + struct device_attribute *attr, + char *buf) { struct bonding *bond = to_bond(d); @@ -530,13 +510,15 @@ static ssize_t bonding_show_fail_over_mac(struct device *d, struct device_attrib bond->params.fail_over_mac); } -static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attribute *attr, const char *buf, size_t count) +static ssize_t bonding_store_fail_over_mac(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) { int new_value; struct bonding *bond = to_bond(d); if (bond->slave_cnt != 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Can't alter fail_over_mac with slaves in bond.\n", bond->dev->name); return -EPERM; @@ -544,21 +526,22 @@ static ssize_t bonding_store_fail_over_mac(struct device *d, struct device_attri new_value = bond_parse_parm(buf, fail_over_mac_tbl); if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Ignoring invalid fail_over_mac value %s.\n", bond->dev->name, buf); return -EINVAL; } bond->params.fail_over_mac = new_value; - printk(KERN_INFO DRV_NAME ": %s: Setting fail_over_mac to %s (%d).\n", + pr_info(DRV_NAME ": %s: Setting fail_over_mac to %s (%d).\n", bond->dev->name, fail_over_mac_tbl[new_value].modename, new_value); return count; } -static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR, bonding_show_fail_over_mac, bonding_store_fail_over_mac); +static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR, + bonding_show_fail_over_mac, bonding_store_fail_over_mac); /* * Show and set the arp timer interval. There are two tricky bits @@ -583,28 +566,28 @@ static ssize_t bonding_store_arp_interval(struct device *d, struct bonding *bond = to_bond(d); if (sscanf(buf, "%d", &new_value) != 1) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: no arp_interval value specified.\n", bond->dev->name); ret = -EINVAL; goto out; } if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", bond->dev->name, new_value, INT_MAX); ret = -EINVAL; goto out; } - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Setting ARP monitoring interval to %d.\n", bond->dev->name, new_value); bond->params.arp_interval = new_value; if (bond->params.arp_interval) bond->dev->priv_flags |= IFF_MASTER_ARPMON; if (bond->params.miimon) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: ARP monitoring cannot be used with MII monitoring. " "%s Disabling MII monitoring.\n", bond->dev->name, bond->dev->name); @@ -615,7 +598,7 @@ static ssize_t bonding_store_arp_interval(struct device *d, } } if (!bond->params.arp_targets[0]) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: ARP monitoring has been set up, " "but no ARP targets have been specified.\n", bond->dev->name); @@ -641,7 +624,8 @@ static ssize_t bonding_store_arp_interval(struct device *d, out: return ret; } -static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR , bonding_show_arp_interval, bonding_store_arp_interval); +static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR, + bonding_show_arp_interval, bonding_store_arp_interval); /* * Show and set the arp targets. @@ -677,7 +661,7 @@ static ssize_t bonding_store_arp_targets(struct device *d, /* look for adds */ if (buf[0] == '+') { if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: invalid ARP target %pI4 specified for addition\n", bond->dev->name, &newtarget); ret = -EINVAL; @@ -686,14 +670,14 @@ static ssize_t bonding_store_arp_targets(struct device *d, /* look for an empty slot to put the target in, and check for dupes */ for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) { if (targets[i] == newtarget) { /* duplicate */ - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: ARP target %pI4 is already present\n", bond->dev->name, &newtarget); ret = -EINVAL; goto out; } if (targets[i] == 0) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: adding ARP target %pI4.\n", bond->dev->name, &newtarget); done = 1; @@ -701,17 +685,16 @@ static ssize_t bonding_store_arp_targets(struct device *d, } } if (!done) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: ARP target table is full!\n", bond->dev->name); ret = -EINVAL; goto out; } - } - else if (buf[0] == '-') { + } else if (buf[0] == '-') { if ((newtarget == 0) || (newtarget == htonl(INADDR_BROADCAST))) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: invalid ARP target %pI4 specified for removal\n", bond->dev->name, &newtarget); ret = -EINVAL; @@ -721,7 +704,7 @@ static ssize_t bonding_store_arp_targets(struct device *d, for (i = 0; (i < BOND_MAX_ARP_TARGETS) && !done; i++) { if (targets[i] == newtarget) { int j; - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: removing ARP target %pI4.\n", bond->dev->name, &newtarget); for (j = i; (j < (BOND_MAX_ARP_TARGETS-1)) && targets[j+1]; j++) @@ -732,15 +715,15 @@ static ssize_t bonding_store_arp_targets(struct device *d, } } if (!done) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: unable to remove nonexistent ARP target %pI4.\n", bond->dev->name, &newtarget); ret = -EINVAL; goto out; } - } - else { - printk(KERN_ERR DRV_NAME ": no command found in arp_ip_targets file for bond %s. Use +<addr> or -<addr>.\n", + } else { + pr_err(DRV_NAME ": no command found in arp_ip_targets file" + " for bond %s. Use +<addr> or -<addr>.\n", bond->dev->name); ret = -EPERM; goto out; @@ -773,7 +756,7 @@ static ssize_t bonding_store_downdelay(struct device *d, struct bonding *bond = to_bond(d); if (!(bond->params.miimon)) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Unable to set down delay as MII monitoring is disabled\n", bond->dev->name); ret = -EPERM; @@ -781,14 +764,14 @@ static ssize_t bonding_store_downdelay(struct device *d, } if (sscanf(buf, "%d", &new_value) != 1) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: no down delay value specified.\n", bond->dev->name); ret = -EINVAL; goto out; } if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", bond->dev->name, new_value, 1, INT_MAX); ret = -EINVAL; @@ -803,15 +786,17 @@ static ssize_t bonding_store_downdelay(struct device *d, bond->params.miimon); } bond->params.downdelay = new_value / bond->params.miimon; - printk(KERN_INFO DRV_NAME ": %s: Setting down delay to %d.\n", - bond->dev->name, bond->params.downdelay * bond->params.miimon); + pr_info(DRV_NAME ": %s: Setting down delay to %d.\n", + bond->dev->name, + bond->params.downdelay * bond->params.miimon); } out: return ret; } -static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR , bonding_show_downdelay, bonding_store_downdelay); +static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR, + bonding_show_downdelay, bonding_store_downdelay); static ssize_t bonding_show_updelay(struct device *d, struct device_attribute *attr, @@ -831,7 +816,7 @@ static ssize_t bonding_store_updelay(struct device *d, struct bonding *bond = to_bond(d); if (!(bond->params.miimon)) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Unable to set up delay as MII monitoring is disabled\n", bond->dev->name); ret = -EPERM; @@ -839,14 +824,14 @@ static ssize_t bonding_store_updelay(struct device *d, } if (sscanf(buf, "%d", &new_value) != 1) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: no up delay value specified.\n", bond->dev->name); ret = -EINVAL; goto out; } if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Invalid down delay value %d not in range %d-%d; rejected.\n", bond->dev->name, new_value, 1, INT_MAX); ret = -EINVAL; @@ -861,7 +846,7 @@ static ssize_t bonding_store_updelay(struct device *d, bond->params.miimon); } bond->params.updelay = new_value / bond->params.miimon; - printk(KERN_INFO DRV_NAME ": %s: Setting up delay to %d.\n", + pr_info(DRV_NAME ": %s: Setting up delay to %d.\n", bond->dev->name, bond->params.updelay * bond->params.miimon); } @@ -869,7 +854,8 @@ static ssize_t bonding_store_updelay(struct device *d, out: return ret; } -static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR , bonding_show_updelay, bonding_store_updelay); +static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR, + bonding_show_updelay, bonding_store_updelay); /* * Show and set the LACP interval. Interface must be down, and the mode @@ -894,7 +880,7 @@ static ssize_t bonding_store_lacp(struct device *d, struct bonding *bond = to_bond(d); if (bond->dev->flags & IFF_UP) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Unable to update LACP rate because interface is up.\n", bond->dev->name); ret = -EPERM; @@ -902,7 +888,7 @@ static ssize_t bonding_store_lacp(struct device *d, } if (bond->params.mode != BOND_MODE_8023AD) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Unable to update LACP rate because bond is not in 802.3ad mode.\n", bond->dev->name); ret = -EPERM; @@ -913,19 +899,20 @@ static ssize_t bonding_store_lacp(struct device *d, if ((new_value == 1) || (new_value == 0)) { bond->params.lacp_fast = new_value; - printk(KERN_INFO DRV_NAME - ": %s: Setting LACP rate to %s (%d).\n", - bond->dev->name, bond_lacp_tbl[new_value].modename, new_value); + pr_info(DRV_NAME ": %s: Setting LACP rate to %s (%d).\n", + bond->dev->name, bond_lacp_tbl[new_value].modename, + new_value); } else { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Ignoring invalid LACP rate value %.*s.\n", - bond->dev->name, (int)strlen(buf) - 1, buf); + bond->dev->name, (int)strlen(buf) - 1, buf); ret = -EINVAL; } out: return ret; } -static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, bonding_show_lacp, bonding_store_lacp); +static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR, + bonding_show_lacp, bonding_store_lacp); static ssize_t bonding_show_ad_select(struct device *d, struct device_attribute *attr, @@ -947,7 +934,7 @@ static ssize_t bonding_store_ad_select(struct device *d, struct bonding *bond = to_bond(d); if (bond->dev->flags & IFF_UP) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Unable to update ad_select because interface " "is up.\n", bond->dev->name); ret = -EPERM; @@ -958,12 +945,12 @@ static ssize_t bonding_store_ad_select(struct device *d, if (new_value != -1) { bond->params.ad_select = new_value; - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Setting ad_select to %s (%d).\n", bond->dev->name, ad_select_tbl[new_value].modename, new_value); } else { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Ignoring invalid ad_select value %.*s.\n", bond->dev->name, (int)strlen(buf) - 1, buf); ret = -EINVAL; @@ -971,8 +958,8 @@ static ssize_t bonding_store_ad_select(struct device *d, out: return ret; } - -static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR, bonding_show_ad_select, bonding_store_ad_select); +static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR, + bonding_show_ad_select, bonding_store_ad_select); /* * Show and set the number of grat ARP to send after a failover event. @@ -994,14 +981,14 @@ static ssize_t bonding_store_n_grat_arp(struct device *d, struct bonding *bond = to_bond(d); if (sscanf(buf, "%d", &new_value) != 1) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: no num_grat_arp value specified.\n", bond->dev->name); ret = -EINVAL; goto out; } if (new_value < 0 || new_value > 255) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Invalid num_grat_arp value %d not in range 0-255; rejected.\n", bond->dev->name, new_value); ret = -EINVAL; @@ -1012,10 +999,11 @@ static ssize_t bonding_store_n_grat_arp(struct device *d, out: return ret; } -static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR, bonding_show_n_grat_arp, bonding_store_n_grat_arp); +static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR, + bonding_show_n_grat_arp, bonding_store_n_grat_arp); /* - * Show and set the number of unsolicted NA's to send after a failover event. + * Show and set the number of unsolicited NA's to send after a failover event. */ static ssize_t bonding_show_n_unsol_na(struct device *d, struct device_attribute *attr, @@ -1034,25 +1022,26 @@ static ssize_t bonding_store_n_unsol_na(struct device *d, struct bonding *bond = to_bond(d); if (sscanf(buf, "%d", &new_value) != 1) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: no num_unsol_na value specified.\n", bond->dev->name); ret = -EINVAL; goto out; } + if (new_value < 0 || new_value > 255) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Invalid num_unsol_na value %d not in range 0-255; rejected.\n", bond->dev->name, new_value); ret = -EINVAL; goto out; - } else { + } else bond->params.num_unsol_na = new_value; - } out: return ret; } -static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR, bonding_show_n_unsol_na, bonding_store_n_unsol_na); +static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR, + bonding_show_n_unsol_na, bonding_store_n_unsol_na); /* * Show and set the MII monitor interval. There are two tricky bits @@ -1077,37 +1066,37 @@ static ssize_t bonding_store_miimon(struct device *d, struct bonding *bond = to_bond(d); if (sscanf(buf, "%d", &new_value) != 1) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: no miimon value specified.\n", bond->dev->name); ret = -EINVAL; goto out; } if (new_value < 0) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: Invalid miimon value %d not in range %d-%d; rejected.\n", bond->dev->name, new_value, 1, INT_MAX); ret = -EINVAL; goto out; } else { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Setting MII monitoring interval to %d.\n", bond->dev->name, new_value); bond->params.miimon = new_value; - if(bond->params.updelay) - printk(KERN_INFO DRV_NAME + if (bond->params.updelay) + pr_info(DRV_NAME ": %s: Note: Updating updelay (to %d) " "since it is a multiple of the miimon value.\n", bond->dev->name, bond->params.updelay * bond->params.miimon); - if(bond->params.downdelay) - printk(KERN_INFO DRV_NAME + if (bond->params.downdelay) + pr_info(DRV_NAME ": %s: Note: Updating downdelay (to %d) " "since it is a multiple of the miimon value.\n", bond->dev->name, bond->params.downdelay * bond->params.miimon); if (bond->params.arp_interval) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: MII monitoring cannot be used with " "ARP monitoring. Disabling ARP monitoring...\n", bond->dev->name); @@ -1141,7 +1130,8 @@ static ssize_t bonding_store_miimon(struct device *d, out: return ret; } -static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, bonding_show_miimon, bonding_store_miimon); +static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR, + bonding_show_miimon, bonding_store_miimon); /* * Show and set the primary slave. The store function is much @@ -1171,12 +1161,13 @@ static ssize_t bonding_store_primary(struct device *d, struct slave *slave; struct bonding *bond = to_bond(d); - rtnl_lock(); + if (!rtnl_trylock()) + return restart_syscall(); read_lock(&bond->lock); write_lock_bh(&bond->curr_slave_lock); if (!USES_PRIMARY(bond->params.mode)) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Unable to set primary slave; %s is in mode %d\n", bond->dev->name, bond->dev->name, bond->params.mode); } else { @@ -1184,7 +1175,7 @@ static ssize_t bonding_store_primary(struct device *d, if (strnicmp (slave->dev->name, buf, strlen(slave->dev->name)) == 0) { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Setting %s as primary slave.\n", bond->dev->name, slave->dev->name); bond->primary_slave = slave; @@ -1196,13 +1187,13 @@ static ssize_t bonding_store_primary(struct device *d, /* if we got here, then we didn't match the name of any slave */ if (strlen(buf) == 0 || buf[0] == '\n') { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Setting primary slave to None.\n", bond->dev->name); bond->primary_slave = NULL; bond_select_active_slave(bond); } else { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Unable to set %.*s as primary slave as it is not a slave.\n", bond->dev->name, (int)strlen(buf) - 1, buf); } @@ -1214,7 +1205,8 @@ out: return count; } -static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, bonding_show_primary, bonding_store_primary); +static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR, + bonding_show_primary, bonding_store_primary); /* * Show and set the use_carrier flag. @@ -1237,7 +1229,7 @@ static ssize_t bonding_store_carrier(struct device *d, if (sscanf(buf, "%d", &new_value) != 1) { - printk(KERN_ERR DRV_NAME + pr_err(DRV_NAME ": %s: no use_carrier value specified.\n", bond->dev->name); ret = -EINVAL; @@ -1245,17 +1237,18 @@ static ssize_t bonding_store_carrier(struct device *d, } if ((new_value == 0) || (new_value == 1)) { bond->params.use_carrier = new_value; - printk(KERN_INFO DRV_NAME ": %s: Setting use_carrier to %d.\n", + pr_info(DRV_NAME ": %s: Setting use_carrier to %d.\n", bond->dev->name, new_value); } else { - printk(KERN_INFO DRV_NAME + pr_info(DRV_NAME ": %s: Ignoring invalid use_carrier value %d.\n", bond->dev->name, new_value); } out: return count; } -static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, bonding_show_carrier, bonding_store_carrier); +static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR, + bonding_show_carrier, bonding_store_carrier); /* @@ -1284,19 +1277,20 @@ static ssize_t bonding_store_active_slave(struct device *d, { int i; struct slave *slave; - struct slave *old_active = NULL; - struct slave *new_active = NULL; + struct slave *old_active = NULL; + struct slave *new_active = NULL; struct bonding *bond = to_bond(d); - rtnl_lock(); + if (!rtnl_trylock()) + return restart_syscall(); read_lock(&bond->lock); write_lock_bh(&bond->curr_slave_lock); - if (!USES_PRIMARY(bond->params.mode)) { - printk(KERN_INFO DRV_NAME - ": %s: Unable to change active slave; %s is in mode %d\n", - bond->dev->name, bond->dev->name, bond->params.mode); - } else { + if (!USES_PRIMARY(bond->params.mode)) + pr_info(DRV_NAME ": %s: Unable to change active slave;" + " %s is in mode %d\n", + bond->dev->name, bond->dev->name, bond->params.mode); + else { bond_for_each_slave(bond, slave, i) { if (strnicmp (slave->dev->name, buf, @@ -1335,18 +1329,18 @@ static ssize_t bonding_store_active_slave(struct device *d, /* if we got here, then we didn't match the name of any slave */ if (strlen(buf) == 0 || buf[0] == '\n') { - printk(KERN_INFO DRV_NAME - ": %s: Setting active slave to None.\n", - bond->dev->name); + pr_info(DRV_NAME + ": %s: Setting active slave to None.\n", + bond->dev->name); bond->primary_slave = NULL; - bond_select_active_slave(bond); + bond_select_active_slave(bond); } else { - printk(KERN_INFO DRV_NAME - ": %s: Unable to set %.*s as active slave as it is not a slave.\n", - bond->dev->name, (int)strlen(buf) - 1, buf); + pr_info(DRV_NAME ": %s: Unable to set %.*s" + " as active slave as it is not a slave.\n", + bond->dev->name, (int)strlen(buf) - 1, buf); } } -out: + out: write_unlock_bh(&bond->curr_slave_lock); read_unlock(&bond->lock); rtnl_unlock(); @@ -1354,7 +1348,8 @@ out: return count; } -static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, bonding_show_active_slave, bonding_store_active_slave); +static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR, + bonding_show_active_slave, bonding_store_active_slave); /* @@ -1371,7 +1366,7 @@ static ssize_t bonding_show_mii_status(struct device *d, curr = bond->curr_active_slave; read_unlock(&bond->curr_slave_lock); - return sprintf(buf, "%s\n", (curr) ? "up" : "down"); + return sprintf(buf, "%s\n", curr ? "up" : "down"); } static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL); @@ -1388,7 +1383,9 @@ static ssize_t bonding_show_ad_aggregator(struct device *d, if (bond->params.mode == BOND_MODE_8023AD) { struct ad_info ad_info; - count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id); + count = sprintf(buf, "%d\n", + (bond_3ad_get_active_agg_info(bond, &ad_info)) + ? 0 : ad_info.aggregator_id); } return count; @@ -1408,7 +1405,9 @@ static ssize_t bonding_show_ad_num_ports(struct device *d, if (bond->params.mode == BOND_MODE_8023AD) { struct ad_info ad_info; - count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports); + count = sprintf(buf, "%d\n", + (bond_3ad_get_active_agg_info(bond, &ad_info)) + ? 0 : ad_info.ports); } return count; @@ -1428,7 +1427,9 @@ static ssize_t bonding_show_ad_actor_key(struct device *d, if (bond->params.mode == BOND_MODE_8023AD) { struct ad_info ad_info; - count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key); + count = sprintf(buf, "%d\n", + (bond_3ad_get_active_agg_info(bond, &ad_info)) + ? 0 : ad_info.actor_key); } return count; @@ -1448,7 +1449,9 @@ static ssize_t bonding_show_ad_partner_key(struct device *d, if (bond->params.mode == BOND_MODE_8023AD) { struct ad_info ad_info; - count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key); + count = sprintf(buf, "%d\n", + (bond_3ad_get_active_agg_info(bond, &ad_info)) + ? 0 : ad_info.partner_key); } return count; @@ -1468,9 +1471,8 @@ static ssize_t bonding_show_ad_partner_mac(struct device *d, if (bond->params.mode == BOND_MODE_8023AD) { struct ad_info ad_info; - if (!bond_3ad_get_active_agg_info(bond, &ad_info)) { + if (!bond_3ad_get_active_agg_info(bond, &ad_info)) count = sprintf(buf, "%pM\n", ad_info.partner_system); - } } return count; @@ -1538,6 +1540,7 @@ int bond_create_sysfs(void) printk(KERN_ERR "network device named %s already exists in sysfs", class_attr_bonding_masters.attr.name); + ret = 0; } return ret; @@ -1562,12 +1565,8 @@ int bond_create_sysfs_entry(struct bonding *bond) int err; err = sysfs_create_group(&(dev->dev.kobj), &bonding_group); - if (err) { + if (err) printk(KERN_EMERG "eek! didn't create group!\n"); - } - - if (expected_refcount < 1) - expected_refcount = atomic_read(&bond->dev->dev.kobj.kref.refcount); return err; } |