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Commit 6cca9adb authored by David S. Miller's avatar David S. Miller
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Merge branch 'bonding-cleanups' 

Nikolay Aleksandrov says:

====================
bonding: style, comment and assertion changes

This is a small and simple patch-set that doesn't introduce (hopefully) any
functional changes, but only stylistic and semantic ones.
Patch 01 simply uses the already provided __rlb_next_rx_slave function inside
rlb_next_rx_slave(), thus removing the duplication of code.
Patch 02 changes all comments that I could find to netdev style, removes
some outdated ones and fixes a few more small cosmetic issues (new line
after declaration, braces around if; else and such)
Patch 03 removes one extra ASSERT_RTNL() because we already have it in the
parent function and consolidates two other ASSERT_RTNL()s to the function
that is exported and supposed to be called with RTNL anyway.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 43702406 e0974585
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Showing with 105 additions and 199 deletions
drivers/net/bonding/bond_3ad.c
View file @ 6cca9adb
......@@ -297,15 +297,14 @@ static u16 __get_link_speed(struct port *port)
static u8 __get_duplex(struct port *port)
{
struct slave *slave = port->slave;
u8 retval;
/* handling a special case: when the configuration starts with
* link down, it sets the duplex to 0.
*/
if (slave->link != BOND_LINK_UP)
if (slave->link != BOND_LINK_UP) {
retval = 0x0;
else {
} else {
switch (slave->duplex) {
case DUPLEX_FULL:
retval = 0x1;
......
drivers/net/bonding/bond_alb.c
View file @ 6cca9adb
......@@ -261,14 +261,15 @@ static struct slave *tlb_choose_channel(struct bonding *bond, u32 hash_index,
u32 skb_len)
{
struct slave *tx_slave;
/*
* We don't need to disable softirq here, becase
/* We don't need to disable softirq here, becase
* tlb_choose_channel() is only called by bond_alb_xmit()
* which already has softirq disabled.
*/
spin_lock(&bond->mode_lock);
tx_slave = __tlb_choose_channel(bond, hash_index, skb_len);
spin_unlock(&bond->mode_lock);
return tx_slave;
}
......@@ -334,14 +335,15 @@ static int rlb_arp_recv(const struct sk_buff *skb, struct bonding *bond,
return RX_HANDLER_ANOTHER;
}
static struct slave *rlb_next_rx_slave(struct bonding *bond)
/* Caller must hold rcu_read_lock() */
static struct slave *__rlb_next_rx_slave(struct bonding *bond)
{
struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
struct slave *before = NULL, *rx_slave = NULL, *slave;
struct list_head *iter;
bool found = false;
bond_for_each_slave(bond, slave, iter) {
bond_for_each_slave_rcu(bond, slave, iter) {
if (!bond_slave_can_tx(slave))
continue;
if (!found) {
......@@ -366,35 +368,16 @@ static struct slave *rlb_next_rx_slave(struct bonding *bond)
return rx_slave;
}
/* Caller must hold rcu_read_lock() */
static struct slave *__rlb_next_rx_slave(struct bonding *bond)
/* Caller must hold RTNL, rcu_read_lock is obtained only to silence checkers */
static struct slave *rlb_next_rx_slave(struct bonding *bond)
{
struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
struct slave *before = NULL, *rx_slave = NULL, *slave;
struct list_head *iter;
bool found = false;
struct slave *rx_slave;
bond_for_each_slave_rcu(bond, slave, iter) {
if (!bond_slave_can_tx(slave))
continue;
if (!found) {
if (!before || before->speed < slave->speed)
before = slave;
} else {
if (!rx_slave || rx_slave->speed < slave->speed)
rx_slave = slave;
}
if (slave == bond_info->rx_slave)
found = true;
}
/* we didn't find anything after the current or we have something
* better before and up to the current slave
*/
if (!rx_slave || (before && rx_slave->speed < before->speed))
rx_slave = before;
ASSERT_RTNL();
if (rx_slave)
bond_info->rx_slave = rx_slave;
rcu_read_lock();
rx_slave = __rlb_next_rx_slave(bond);
rcu_read_unlock();
return rx_slave;
}
......@@ -587,7 +570,7 @@ static void rlb_req_update_subnet_clients(struct bonding *bond, __be32 src_ip)
netdev_err(bond->dev, "found a client with no channel in the client's hash table\n");
continue;
}
/*update all clients using this src_ip, that are not assigned
/* update all clients using this src_ip, that are not assigned
* to the team's address (curr_active_slave) and have a known
* unicast mac address.
*/
......@@ -713,9 +696,7 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
return NULL;
if (arp->op_code == htons(ARPOP_REPLY)) {
/* the arp must be sent on the selected
* rx channel
*/
/* the arp must be sent on the selected rx channel */
tx_slave = rlb_choose_channel(skb, bond);
if (tx_slave)
ether_addr_copy(arp->mac_src, tx_slave->dev->dev_addr);
......@@ -774,7 +755,7 @@ static void rlb_rebalance(struct bonding *bond)
spin_unlock_bh(&bond->mode_lock);
}
/* Caller must hold rx_hashtbl lock */
/* Caller must hold mode_lock */
static void rlb_init_table_entry_dst(struct rlb_client_info *entry)
{
entry->used_next = RLB_NULL_INDEX;
......@@ -862,8 +843,9 @@ static void rlb_src_link(struct bonding *bond, u32 ip_src_hash, u32 ip_dst_hash)
bond_info->rx_hashtbl[ip_src_hash].src_first = ip_dst_hash;
}
/* deletes all rx_hashtbl entries with arp->ip_src if their mac_src does
* not match arp->mac_src */
/* deletes all rx_hashtbl entries with arp->ip_src if their mac_src does
* not match arp->mac_src
*/
static void rlb_purge_src_ip(struct bonding *bond, struct arp_pkt *arp)
{
struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
......@@ -1040,8 +1022,9 @@ static int alb_set_slave_mac_addr(struct slave *slave, u8 addr[])
return 0;
}
/* for rlb each slave must have a unique hw mac addresses so that */
/* each slave will receive packets destined to a different mac */
/* for rlb each slave must have a unique hw mac addresses so that
* each slave will receive packets destined to a different mac
*/
memcpy(s_addr.sa_data, addr, dev->addr_len);
s_addr.sa_family = dev->type;
if (dev_set_mac_address(dev, &s_addr)) {
......@@ -1052,13 +1035,10 @@ static int alb_set_slave_mac_addr(struct slave *slave, u8 addr[])
return 0;
}
/*
* Swap MAC addresses between two slaves.
/* Swap MAC addresses between two slaves.
*
* Called with RTNL held, and no other locks.
*
*/
static void alb_swap_mac_addr(struct slave *slave1, struct slave *slave2)
{
u8 tmp_mac_addr[ETH_ALEN];
......@@ -1069,8 +1049,7 @@ static void alb_swap_mac_addr(struct slave *slave1, struct slave *slave2)
}
/*
* Send learning packets after MAC address swap.
/* Send learning packets after MAC address swap.
*
* Called with RTNL and no other locks
*/
......@@ -1143,7 +1122,6 @@ static void alb_change_hw_addr_on_detach(struct bonding *bond, struct slave *sla
found_slave = bond_slave_has_mac(bond, slave->perm_hwaddr);
if (found_slave) {
/* locking: needs RTNL and nothing else */
alb_swap_mac_addr(slave, found_slave);
alb_fasten_mac_swap(bond, slave, found_slave);
}
......@@ -1192,7 +1170,8 @@ static int alb_handle_addr_collision_on_attach(struct bonding *bond, struct slav
return 0;
/* Try setting slave mac to bond address and fall-through
to code handling that situation below... */
* to code handling that situation below...
*/
alb_set_slave_mac_addr(slave, bond->dev->dev_addr);
}
......@@ -1300,7 +1279,6 @@ int bond_alb_initialize(struct bonding *bond, int rlb_enabled)
if (rlb_enabled) {
bond->alb_info.rlb_enabled = 1;
/* initialize rlb */
res = rlb_initialize(bond);
if (res) {
tlb_deinitialize(bond);
......@@ -1324,7 +1302,7 @@ void bond_alb_deinitialize(struct bonding *bond)
}
static int bond_do_alb_xmit(struct sk_buff *skb, struct bonding *bond,
struct slave *tx_slave)
struct slave *tx_slave)
{
struct alb_bond_info *bond_info = &(BOND_ALB_INFO(bond));
struct ethhdr *eth_data = eth_hdr(skb);
......@@ -1572,13 +1550,11 @@ void bond_alb_monitor(struct work_struct *work)
bond_info->tx_rebalance_counter = 0;
}
/* handle rlb stuff */
if (bond_info->rlb_enabled) {
if (bond_info->primary_is_promisc &&
(++bond_info->rlb_promisc_timeout_counter >= RLB_PROMISC_TIMEOUT)) {
/*
* dev_set_promiscuity requires rtnl and
/* dev_set_promiscuity requires rtnl and
* nothing else. Avoid race with bond_close.
*/
rcu_read_unlock();
......@@ -1648,8 +1624,7 @@ int bond_alb_init_slave(struct bonding *bond, struct slave *slave)
return 0;
}
/*
* Remove slave from tlb and rlb hash tables, and fix up MAC addresses
/* Remove slave from tlb and rlb hash tables, and fix up MAC addresses
* if necessary.
*
* Caller must hold RTNL and no other locks
......@@ -1736,8 +1711,7 @@ void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave
if (!swap_slave)
swap_slave = bond_slave_has_mac(bond, bond->dev->dev_addr);
/*
* Arrange for swap_slave and new_slave to temporarily be
/* Arrange for swap_slave and new_slave to temporarily be
* ignored so we can mess with their MAC addresses without
* fear of interference from transmit activity.
*/
......
drivers/net/bonding/bond_debugfs.c
View file @ 6cca9adb
......@@ -13,9 +13,7 @@
static struct dentry *bonding_debug_root;
/*
* Show RLB hash table
*/
/* Show RLB hash table */
static int bond_debug_rlb_hash_show(struct seq_file *m, void *v)
{
struct bonding *bond = m->private;
......
drivers/net/bonding/bond_main.c
View file @ 6cca9adb
......@@ -253,8 +253,7 @@ void bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb,
dev_queue_xmit(skb);
}
/*
* In the following 2 functions, bond_vlan_rx_add_vid and bond_vlan_rx_kill_vid,
/* In the following 2 functions, bond_vlan_rx_add_vid and bond_vlan_rx_kill_vid,
* We don't protect the slave list iteration with a lock because:
* a. This operation is performed in IOCTL context,
* b. The operation is protected by the RTNL semaphore in the 8021q code,
......@@ -326,8 +325,7 @@ static int bond_vlan_rx_kill_vid(struct net_device *bond_dev,
/*------------------------------- Link status -------------------------------*/
/*
* Set the carrier state for the master according to the state of its
/* Set the carrier state for the master according to the state of its
* slaves. If any slaves are up, the master is up. In 802.3ad mode,
* do special 802.3ad magic.
*
......@@ -362,8 +360,7 @@ static int bond_set_carrier(struct bonding *bond)
return 0;
}
/*
* Get link speed and duplex from the slave's base driver
/* Get link speed and duplex from the slave's base driver
* using ethtool. If for some reason the call fails or the
* values are invalid, set speed and duplex to -1,
* and return.
......@@ -416,8 +413,7 @@ const char *bond_slave_link_status(s8 link)
}
}
/*
* if <dev> supports MII link status reporting, check its link status.
/* if <dev> supports MII link status reporting, check its link status.
*
* We either do MII/ETHTOOL ioctls, or check netif_carrier_ok(),
* depending upon the setting of the use_carrier parameter.
......@@ -454,14 +450,14 @@ static int bond_check_dev_link(struct bonding *bond,
/* Ethtool can't be used, fallback to MII ioctls. */
ioctl = slave_ops->ndo_do_ioctl;
if (ioctl) {
/* TODO: set pointer to correct ioctl on a per team member */
/* bases to make this more efficient. that is, once */
/* we determine the correct ioctl, we will always */
/* call it and not the others for that team */
/* member. */
/*
* We cannot assume that SIOCGMIIPHY will also read a
/* TODO: set pointer to correct ioctl on a per team member
* bases to make this more efficient. that is, once
* we determine the correct ioctl, we will always
* call it and not the others for that team
* member.
*/
/* We cannot assume that SIOCGMIIPHY will also read a
* register; not all network drivers (e.g., e100)
* support that.
*/
......@@ -476,8 +472,7 @@ static int bond_check_dev_link(struct bonding *bond,
}
}
/*
* If reporting, report that either there's no dev->do_ioctl,
/* If reporting, report that either there's no dev->do_ioctl,
* or both SIOCGMIIREG and get_link failed (meaning that we
* cannot report link status). If not reporting, pretend
* we're ok.
......@@ -487,9 +482,7 @@ static int bond_check_dev_link(struct bonding *bond,
/*----------------------------- Multicast list ------------------------------*/
/*
* Push the promiscuity flag down to appropriate slaves
*/
/* Push the promiscuity flag down to appropriate slaves */
static int bond_set_promiscuity(struct bonding *bond, int inc)
{
struct list_head *iter;
......@@ -512,9 +505,7 @@ static int bond_set_promiscuity(struct bonding *bond, int inc)
return err;
}
/*
* Push the allmulti flag down to all slaves
*/
/* Push the allmulti flag down to all slaves */
static int bond_set_allmulti(struct bonding *bond, int inc)
{
struct list_head *iter;
......@@ -537,8 +528,7 @@ static int bond_set_allmulti(struct bonding *bond, int inc)
return err;
}
/*
* Retrieve the list of registered multicast addresses for the bonding
/* Retrieve the list of registered multicast addresses for the bonding
* device and retransmit an IGMP JOIN request to the current active
* slave.
*/
......@@ -560,8 +550,7 @@ static void bond_resend_igmp_join_requests_delayed(struct work_struct *work)
rtnl_unlock();
}
/* Flush bond's hardware addresses from slave
*/
/* Flush bond's hardware addresses from slave */
static void bond_hw_addr_flush(struct net_device *bond_dev,
struct net_device *slave_dev)
{
......@@ -588,8 +577,6 @@ static void bond_hw_addr_flush(struct net_device *bond_dev,
static void bond_hw_addr_swap(struct bonding *bond, struct slave *new_active,
struct slave *old_active)
{
ASSERT_RTNL();
if (old_active) {
if (bond->dev->flags & IFF_PROMISC)
dev_set_promiscuity(old_active->dev, -1);
......@@ -632,8 +619,7 @@ static void bond_set_dev_addr(struct net_device *bond_dev,
call_netdevice_notifiers(NETDEV_CHANGEADDR, bond_dev);
}
/*
* bond_do_fail_over_mac
/* bond_do_fail_over_mac
*
* Perform special MAC address swapping for fail_over_mac settings
*
......@@ -653,8 +639,7 @@ static void bond_do_fail_over_mac(struct bonding *bond,
bond_set_dev_addr(bond->dev, new_active->dev);
break;
case BOND_FOM_FOLLOW:
/*
* if new_active && old_active, swap them
/* if new_active && old_active, swap them
* if just old_active, do nothing (going to no active slave)
* if just new_active, set new_active to bond's MAC
*/
......@@ -863,7 +848,8 @@ void bond_change_active_slave(struct bonding *bond, struct slave *new_active)
/* resend IGMP joins since active slave has changed or
* all were sent on curr_active_slave.
* resend only if bond is brought up with the affected
* bonding modes and the retransmission is enabled */
* bonding modes and the retransmission is enabled
*/
if (netif_running(bond->dev) && (bond->params.resend_igmp > 0) &&
((bond_uses_primary(bond) && new_active) ||
BOND_MODE(bond) == BOND_MODE_ROUNDROBIN)) {
......@@ -888,6 +874,8 @@ void bond_select_active_slave(struct bonding *bond)
struct slave *best_slave;
int rv;
ASSERT_RTNL();
best_slave = bond_find_best_slave(bond);
if (best_slave != rtnl_dereference(bond->curr_active_slave)) {
bond_change_active_slave(bond, best_slave);
......@@ -1229,8 +1217,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
slave_dev->name);
}
/*
* Old ifenslave binaries are no longer supported. These can
/* Old ifenslave binaries are no longer supported. These can
* be identified with moderate accuracy by the state of the slave:
* the current ifenslave will set the interface down prior to
* enslaving it; the old ifenslave will not.
......@@ -1302,7 +1289,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
call_netdevice_notifiers(NETDEV_JOIN, slave_dev);
/* If this is the first slave, then we need to set the master's hardware
* address to be the same as the slave's. */
* address to be the same as the slave's.
*/
if (!bond_has_slaves(bond) &&
bond->dev->addr_assign_type == NET_ADDR_RANDOM)
bond_set_dev_addr(bond->dev, slave_dev);
......@@ -1315,8 +1303,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
new_slave->bond = bond;
new_slave->dev = slave_dev;
/*
* Set the new_slave's queue_id to be zero. Queue ID mapping
/* Set the new_slave's queue_id to be zero. Queue ID mapping
* is set via sysfs or module option if desired.
*/
new_slave->queue_id = 0;
......@@ -1329,8 +1316,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
goto err_free;
}
/*
* Save slave's original ("permanent") mac address for modes
/* Save slave's original ("permanent") mac address for modes
* that need it, and for restoring it upon release, and then
* set it to the master's address
*/
......@@ -1338,8 +1324,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
if (!bond->params.fail_over_mac ||
BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) {
/*
* Set slave to master's mac address. The application already
/* Set slave to master's mac address. The application already
* set the master's mac address to that of the first slave
*/
memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len);
......@@ -1425,8 +1410,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
link_reporting = bond_check_dev_link(bond, slave_dev, 1);
if ((link_reporting == -1) && !bond->params.arp_interval) {
/*
* miimon is set but a bonded network driver
/* miimon is set but a bonded network driver
* does not support ETHTOOL/MII and
* arp_interval is not set. Note: if
* use_carrier is enabled, we will never go
......@@ -1626,8 +1610,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
return res;
}
/*
* Try to release the slave device <slave> from the bond device <master>
/* Try to release the slave device <slave> from the bond device <master>
* It is legal to access curr_active_slave without a lock because all the function
* is RTNL-locked. If "all" is true it means that the function is being called
* while destroying a bond interface and all slaves are being released.
......@@ -1713,8 +1696,7 @@ static int __bond_release_one(struct net_device *bond_dev,
if (all) {
RCU_INIT_POINTER(bond->curr_active_slave, NULL);
} else if (oldcurrent == slave) {
/*
* Note that we hold RTNL over this sequence, so there
/* Note that we hold RTNL over this sequence, so there
* is no concern that another slave add/remove event
* will interfere.
*/
......@@ -1741,10 +1723,9 @@ static int __bond_release_one(struct net_device *bond_dev,
netdev_info(bond_dev, "last VLAN challenged slave %s left bond %s - VLAN blocking is removed\n",
slave_dev->name, bond_dev->name);
/* must do this from outside any spinlocks */
vlan_vids_del_by_dev(slave_dev, bond_dev);
/* If the mode uses primary, then this cases was handled above by
/* If the mode uses primary, then this case was handled above by
* bond_change_active_slave(..., NULL)
*/
if (!bond_uses_primary(bond)) {
......@@ -1784,7 +1765,7 @@ static int __bond_release_one(struct net_device *bond_dev,
bond_free_slave(slave);
return 0; /* deletion OK */
return 0;
}
/* A wrapper used because of ndo_del_link */
......@@ -1793,10 +1774,9 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
return __bond_release_one(bond_dev, slave_dev, false);
}
/*
* First release a slave and then destroy the bond if no more slaves are left.
* Must be under rtnl_lock when this function is called.
*/
/* First release a slave and then destroy the bond if no more slaves are left.
* Must be under rtnl_lock when this function is called.
*/
static int bond_release_and_destroy(struct net_device *bond_dev,
struct net_device *slave_dev)
{
......@@ -1819,7 +1799,6 @@ static int bond_info_query(struct net_device *bond_dev, struct ifbond *info)
info->bond_mode = BOND_MODE(bond);
info->miimon = bond->params.miimon;
info->num_slaves = bond->slave_cnt;
return 0;
......@@ -1882,9 +1861,7 @@ static int bond_miimon_inspect(struct bonding *bond)
/*FALLTHRU*/
case BOND_LINK_FAIL:
if (link_state) {
/*
* recovered before downdelay expired
*/
/* recovered before downdelay expired */
slave->link = BOND_LINK_UP;
slave->last_link_up = jiffies;
netdev_info(bond->dev, "link status up again after %d ms for interface %s\n",
......@@ -2027,7 +2004,6 @@ static void bond_miimon_commit(struct bonding *bond)
}
do_failover:
ASSERT_RTNL();
block_netpoll_tx();
bond_select_active_slave(bond);
unblock_netpoll_tx();
......@@ -2036,8 +2012,7 @@ static void bond_miimon_commit(struct bonding *bond)
bond_set_carrier(bond);
}
/*
* bond_mii_monitor
/* bond_mii_monitor
*
* Really a wrapper that splits the mii monitor into two phases: an
* inspection, then (if inspection indicates something needs to be done)
......@@ -2109,8 +2084,7 @@ static bool bond_has_this_ip(struct bonding *bond, __be32 ip)
return ret;
}
/*
* We go to the (large) trouble of VLAN tagging ARP frames because
/* We go to the (large) trouble of VLAN tagging ARP frames because
* switches in VLAN mode (especially if ports are configured as
* "native" to a VLAN) might not pass non-tagged frames.
*/
......@@ -2337,8 +2311,7 @@ int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond,
curr_active_slave = rcu_dereference(bond->curr_active_slave);
/*
* Backup slaves won't see the ARP reply, but do come through
/* Backup slaves won't see the ARP reply, but do come through
* here for each ARP probe (so we swap the sip/tip to validate
* the probe). In a "redundant switch, common router" type of
* configuration, the ARP probe will (hopefully) travel from
......@@ -2378,8 +2351,7 @@ static bool bond_time_in_interval(struct bonding *bond, unsigned long last_act,
last_act + mod * delta_in_ticks + delta_in_ticks/2);
}
/*
* this function is called regularly to monitor each slave's link
/* This function is called regularly to monitor each slave's link
* ensuring that traffic is being sent and received when arp monitoring
* is used in load-balancing mode. if the adapter has been dormant, then an
* arp is transmitted to generate traffic. see activebackup_arp_monitor for
......@@ -2488,8 +2460,7 @@ static void bond_loadbalance_arp_mon(struct work_struct *work)
msecs_to_jiffies(bond->params.arp_interval));
}
/*
* Called to inspect slaves for active-backup mode ARP monitor link state
/* Called to inspect slaves for active-backup mode ARP monitor link state
* changes. Sets new_link in slaves to specify what action should take
* place for the slave. Returns 0 if no changes are found, >0 if changes
* to link states must be committed.
......@@ -2515,16 +2486,14 @@ static int bond_ab_arp_inspect(struct bonding *bond)
continue;
}
/*
* Give slaves 2*delta after being enslaved or made
/* Give slaves 2*delta after being enslaved or made
* active. This avoids bouncing, as the last receive
* times need a full ARP monitor cycle to be updated.
*/
if (bond_time_in_interval(bond, slave->last_link_up, 2))
continue;
/*
* Backup slave is down if:
/* Backup slave is down if:
* - No current_arp_slave AND
* - more than 3*delta since last receive AND
* - the bond has an IP address
......@@ -2543,8 +2512,7 @@ static int bond_ab_arp_inspect(struct bonding *bond)
commit++;
}
/*
* Active slave is down if:
/* Active slave is down if:
* - more than 2*delta since transmitting OR
* - (more than 2*delta since receive AND
* the bond has an IP address)
......@@ -2561,8 +2529,7 @@ static int bond_ab_arp_inspect(struct bonding *bond)
return commit;
}
/*
* Called to commit link state changes noted by inspection step of
/* Called to commit link state changes noted by inspection step of
* active-backup mode ARP monitor.
*
* Called with RTNL hold.
......@@ -2630,7 +2597,6 @@ static void bond_ab_arp_commit(struct bonding *bond)
}
do_failover:
ASSERT_RTNL();
block_netpoll_tx();
bond_select_active_slave(bond);
unblock_netpoll_tx();
......@@ -2639,8 +2605,7 @@ static void bond_ab_arp_commit(struct bonding *bond)
bond_set_carrier(bond);
}
/*
* Send ARP probes for active-backup mode ARP monitor.
/* Send ARP probes for active-backup mode ARP monitor.
*
* Called with rcu_read_lock held.
*/
......@@ -2782,9 +2747,7 @@ static void bond_activebackup_arp_mon(struct work_struct *work)
/*-------------------------- netdev event handling --------------------------*/
/*
* Change device name
*/
/* Change device name */
static int bond_event_changename(struct bonding *bond)
{
bond_remove_proc_entry(bond);
......@@ -2861,13 +2824,9 @@ static int bond_slave_netdev_event(unsigned long event,
}
break;
case NETDEV_DOWN:
/*
* ... Or is it this?
*/
break;
case NETDEV_CHANGEMTU:
/*
* TODO: Should slaves be allowed to
/* TODO: Should slaves be allowed to
* independently alter their MTU? For
* an active-backup bond, slaves need
* not be the same type of device, so
......@@ -2916,8 +2875,7 @@ static int bond_slave_netdev_event(unsigned long event,
return NOTIFY_DONE;
}
/*
* bond_netdev_event: handle netdev notifier chain events.
/* bond_netdev_event: handle netdev notifier chain events.
*
* This function receives events for the netdev chain. The caller (an
* ioctl handler calling blocking_notifier_call_chain) holds the necessary
......@@ -3187,8 +3145,7 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd
mii->phy_id = 0;
/* Fall Through */
case SIOCGMIIREG:
/*
* We do this again just in case we were called by SIOCGMIIREG
/* We do this again just in case we were called by SIOCGMIIREG
* instead of SIOCGMIIPHY.
*/
mii = if_mii(ifr);
......@@ -3229,7 +3186,6 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd
return res;
default:
/* Go on */
break;
}
......@@ -3291,7 +3247,6 @@ static void bond_set_rx_mode(struct net_device *bond_dev)
struct list_head *iter;
struct slave *slave;
rcu_read_lock();
if (bond_uses_primary(bond)) {
slave = rcu_dereference(bond->curr_active_slave);
......@@ -3329,8 +3284,7 @@ static int bond_neigh_init(struct neighbour *n)
if (ret)
return ret;
/*
* Assign slave's neigh_cleanup to neighbour in case cleanup is called
/* Assign slave's neigh_cleanup to neighbour in case cleanup is called
* after the last slave has been detached. Assumes that all slaves
* utilize the same neigh_cleanup (true at this writing as only user
* is ipoib).
......@@ -3343,8 +3297,7 @@ static int bond_neigh_init(struct neighbour *n)
return parms.neigh_setup(n);
}
/*
* The bonding ndo_neigh_setup is called at init time beofre any
/* The bonding ndo_neigh_setup is called at init time beofre any
* slave exists. So we must declare proxy setup function which will
* be used at run time to resolve the actual slave neigh param setup.
*
......@@ -3362,9 +3315,7 @@ static int bond_neigh_setup(struct net_device *dev,
return 0;
}
/*
* Change the MTU of all of a master's slaves to match the master
*/
/* Change the MTU of all of a master's slaves to match the master */
static int bond_change_mtu(struct net_device *bond_dev, int new_mtu)
{
struct bonding *bond = netdev_priv(bond_dev);
......@@ -3417,8 +3368,7 @@ static int bond_change_mtu(struct net_device *bond_dev, int new_mtu)
return res;
}
/*
* Change HW address
/* Change HW address
*
* Note that many devices must be down to change the HW address, and
* downing the master releases all slaves. We can make bonds full of
......@@ -3588,8 +3538,7 @@ static int bond_xmit_roundrobin(struct sk_buff *skb, struct net_device *bond_dev
return NETDEV_TX_OK;
}
/*
* in active-backup mode, we know that bond->curr_active_slave is always valid if
/* In active-backup mode, we know that bond->curr_active_slave is always valid if
* the bond has a usable interface.
*/
static int bond_xmit_activebackup(struct sk_buff *skb, struct net_device *bond_dev)
......@@ -3651,9 +3600,7 @@ static int bond_xmit_broadcast(struct sk_buff *skb, struct net_device *bond_dev)
/*------------------------- Device initialization ---------------------------*/
/*
* Lookup the slave that corresponds to a qid
*/
/* Lookup the slave that corresponds to a qid */
static inline int bond_slave_override(struct bonding *bond,
struct sk_buff *skb)
{
......@@ -3682,17 +3629,14 @@ static inline int bond_slave_override(struct bonding *bond,
static u16 bond_select_queue(struct net_device *dev, struct sk_buff *skb,
void *accel_priv, select_queue_fallback_t fallback)
{
/*
* This helper function exists to help dev_pick_tx get the correct
/* This helper function exists to help dev_pick_tx get the correct
* destination queue. Using a helper function skips a call to
* skb_tx_hash and will put the skbs in the queue we expect on their
* way down to the bonding driver.
*/
u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
/*
* Save the original txq to restore before passing to the driver
*/
/* Save the original txq to restore before passing to the driver */
qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
if (unlikely(txq >= dev->real_num_tx_queues)) {
......@@ -3740,8 +3684,7 @@ static netdev_tx_t bond_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct bonding *bond = netdev_priv(dev);
netdev_tx_t ret = NETDEV_TX_OK;
/*
* If we risk deadlock from transmitting this in the
/* If we risk deadlock from transmitting this in the
* netpoll path, tell netpoll to queue the frame for later tx
*/
if (unlikely(is_netpoll_tx_blocked(dev)))
......@@ -3865,8 +3808,7 @@ void bond_setup(struct net_device *bond_dev)
bond_dev->priv_flags |= IFF_BONDING | IFF_UNICAST_FLT;
bond_dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
/* don't acquire bond device's netif_tx_lock when
* transmitting */
/* don't acquire bond device's netif_tx_lock when transmitting */
bond_dev->features |= NETIF_F_LLTX;
/* By default, we declare the bond to be fully
......@@ -3889,10 +3831,9 @@ void bond_setup(struct net_device *bond_dev)
bond_dev->features |= bond_dev->hw_features;
}
/*
* Destroy a bonding device.
* Must be under rtnl_lock when this function is called.
*/
/* Destroy a bonding device.
* Must be under rtnl_lock when this function is called.
*/
static void bond_uninit(struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
......@@ -3920,9 +3861,7 @@ static int bond_check_params(struct bond_params *params)
const struct bond_opt_value *valptr;
int arp_all_targets_value;
/*
* Convert string parameters.
*/
/* Convert string parameters. */
if (mode) {
bond_opt_initstr(&newval, mode);
valptr = bond_opt_parse(bond_opt_get(BOND_OPT_MODE), &newval);
......@@ -4099,9 +4038,9 @@ static int bond_check_params(struct bond_params *params)
for (arp_ip_count = 0, i = 0;
(arp_ip_count < BOND_MAX_ARP_TARGETS) && arp_ip_target[i]; i++) {
/* not complete check, but should be good enough to
catch mistakes */
__be32 ip;
/* not a complete check, but good enough to catch mistakes */
if (!in4_pton(arp_ip_target[i], -1, (u8 *)&ip, -1, NULL) ||
!bond_is_ip_target_ok(ip)) {
pr_warn("Warning: bad arp_ip_target module parameter (%s), ARP monitoring will not be performed\n",
......@@ -4284,9 +4223,7 @@ static void bond_set_lockdep_class(struct net_device *dev)
dev->qdisc_tx_busylock = &bonding_tx_busylock_key;
}
/*
* Called from registration process
*/
/* Called from registration process */
static int bond_init(struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
......@@ -4440,9 +4377,7 @@ static void __exit bonding_exit(void)
unregister_pernet_subsys(&bond_net_ops);
#ifdef CONFIG_NET_POLL_CONTROLLER
/*
* Make sure we don't have an imbalance on our netpoll blocking
*/
/* Make sure we don't have an imbalance on our netpoll blocking */
WARN_ON(atomic_read(&netpoll_block_tx));
#endif
}
......
drivers/net/bonding/bond_sysfs.c
View file @ 6cca9adb
......@@ -91,7 +91,6 @@ static struct net_device *bond_get_by_name(struct bond_net *bn, const char *ifna
* creates and deletes entire bonds.
*
* The class parameter is ignored.
*
*/
static ssize_t bonding_store_bonds(struct class *cls,
struct class_attribute *attr,
......
drivers/net/bonding/bonding.h
View file @ 6cca9adb
......@@ -197,7 +197,8 @@ struct bonding {
struct slave *);
/* mode_lock is used for mode-specific locking needs, currently used by:
* 3ad mode (4) - protect against running bond_3ad_unbind_slave() and
* bond_3ad_state_machine_handler() concurrently.
* bond_3ad_state_machine_handler() concurrently and also
* the access to the state machine shared variables.
* TLB mode (5) - to sync the use and modifications of its hash table
* ALB mode (6) - to sync the use and modifications of its hash table
*/
......
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