From 6ade97da601f8af793f6c7a861af754d0f0b6767 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Tue, 26 Sep 2017 23:12:28 +0300 Subject: arp: make arp_hdr_len() return unsigned int Negative ARP header length are not a thing. Constify arguments while I'm at it. Space savings: add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-3 (-3) function old new delta arpt_do_table 1163 1160 -3 Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/net/bonding') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index c99dc59d729b..d2e94b8559f0 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2491,7 +2491,8 @@ int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond, struct slave *curr_active_slave, *curr_arp_slave; unsigned char *arp_ptr; __be32 sip, tip; - int alen, is_arp = skb->protocol == __cpu_to_be16(ETH_P_ARP); + int is_arp = skb->protocol == __cpu_to_be16(ETH_P_ARP); + unsigned int alen; if (!slave_do_arp_validate(bond, slave)) { if ((slave_do_arp_validate_only(bond) && is_arp) || -- cgit v1.2.3 From 4d2c0cda07448ea6980f00102dc3964eb25e241c Mon Sep 17 00:00:00 2001 From: Mahesh Bandewar Date: Wed, 27 Sep 2017 18:03:49 -0700 Subject: bonding: speed/duplex update at NETDEV_UP event Some NIC drivers don't have correct speed/duplex settings at the time they send NETDEV_UP notification and that messes up the bonding state. Especially 802.3ad mode which is very sensitive to these settings. In the current implementation we invoke bond_update_speed_duplex() when we receive NETDEV_UP, however, ignore the return value. If the values we get are invalid (UNKNOWN), then slave gets removed from the aggregator with speed and duplex set to UNKNOWN while link is still marked as UP. This patch fixes this scenario. Also 802.3ad mode is sensitive to these conditions while other modes are not, so making sure that it doesn't change the behavior for other modes. Signed-off-by: Mahesh Bandewar Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers/net/bonding') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index d2e94b8559f0..b19dc033fb36 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -3073,7 +3073,16 @@ static int bond_slave_netdev_event(unsigned long event, break; case NETDEV_UP: case NETDEV_CHANGE: - bond_update_speed_duplex(slave); + /* For 802.3ad mode only: + * Getting invalid Speed/Duplex values here will put slave + * in weird state. So mark it as link-down for the time + * being and let link-monitoring (miimon) set it right when + * correct speeds/duplex are available. + */ + if (bond_update_speed_duplex(slave) && + BOND_MODE(bond) == BOND_MODE_8023AD) + slave->link = BOND_LINK_DOWN; + if (BOND_MODE(bond) == BOND_MODE_8023AD) bond_3ad_adapter_speed_duplex_changed(slave); /* Fallthrough */ -- cgit v1.2.3 From 33eaf2a6eb48ebf00374aaaf4b1b43f9950dcbe4 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 4 Oct 2017 17:48:46 -0700 Subject: net: Add extack to ndo_add_slave Pass extack to do_set_master and down to ndo_add_slave Signed-off-by: David Ahern Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 5 +++-- drivers/net/bonding/bond_options.c | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/net/bonding') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index b19dc033fb36..78feb94a36db 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1328,7 +1328,8 @@ void bond_lower_state_changed(struct slave *slave) } /* enslave device to bond device */ -int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) +int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, + struct netlink_ext_ack *extack) { struct bonding *bond = netdev_priv(bond_dev); const struct net_device_ops *slave_ops = slave_dev->netdev_ops; @@ -3492,7 +3493,7 @@ static int bond_do_ioctl(struct net_device *bond_dev, struct ifreq *ifr, int cmd switch (cmd) { case BOND_ENSLAVE_OLD: case SIOCBONDENSLAVE: - res = bond_enslave(bond_dev, slave_dev); + res = bond_enslave(bond_dev, slave_dev, NULL); break; case BOND_RELEASE_OLD: case SIOCBONDRELEASE: diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index 5931aa2fe997..8a9b085c2a98 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -1383,7 +1383,7 @@ static int bond_option_slaves_set(struct bonding *bond, switch (command[0]) { case '+': netdev_dbg(bond->dev, "Adding slave %s\n", dev->name); - ret = bond_enslave(bond->dev, dev); + ret = bond_enslave(bond->dev, dev, NULL); break; case '-': -- cgit v1.2.3 From 42ab19ee90292993370a30ad242599d75a3b749e Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 4 Oct 2017 17:48:47 -0700 Subject: net: Add extack to upper device linking Add extack arg to netdev_upper_dev_link and netdev_master_upper_dev_link Signed-off-by: David Ahern Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers/net/bonding') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 78feb94a36db..bc92307c2082 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1217,14 +1217,15 @@ static enum netdev_lag_tx_type bond_lag_tx_type(struct bonding *bond) } } -static int bond_master_upper_dev_link(struct bonding *bond, struct slave *slave) +static int bond_master_upper_dev_link(struct bonding *bond, struct slave *slave, + struct netlink_ext_ack *extack) { struct netdev_lag_upper_info lag_upper_info; int err; lag_upper_info.tx_type = bond_lag_tx_type(bond); err = netdev_master_upper_dev_link(slave->dev, bond->dev, slave, - &lag_upper_info); + &lag_upper_info, extack); if (err) return err; rtmsg_ifinfo(RTM_NEWLINK, slave->dev, IFF_SLAVE, GFP_KERNEL); @@ -1710,7 +1711,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, goto err_detach; } - res = bond_master_upper_dev_link(bond, new_slave); + res = bond_master_upper_dev_link(bond, new_slave, extack); if (res) { netdev_dbg(bond_dev, "Error %d calling bond_master_upper_dev_link\n", res); goto err_unregister; -- cgit v1.2.3 From 759088bda21f4887c645579418e8b478eb570d78 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 4 Oct 2017 17:48:49 -0700 Subject: net: bonding: Add extack messages for some enslave failures A number of bond_enslave errors are logged using the netdev_err API. Return those messages to userspace via the extack facility. Signed-off-by: David Ahern Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/net/bonding') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index bc92307c2082..172eeeb68152 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1348,12 +1348,14 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, /* already in-use? */ if (netdev_is_rx_handler_busy(slave_dev)) { + NL_SET_ERR_MSG(extack, "Device is in use and cannot be enslaved"); netdev_err(bond_dev, "Error: Device is in use and cannot be enslaved\n"); return -EBUSY; } if (bond_dev == slave_dev) { + NL_SET_ERR_MSG(extack, "Cannot enslave bond to itself."); netdev_err(bond_dev, "cannot enslave bond to itself.\n"); return -EPERM; } @@ -1364,6 +1366,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, netdev_dbg(bond_dev, "%s is NETIF_F_VLAN_CHALLENGED\n", slave_dev->name); if (vlan_uses_dev(bond_dev)) { + NL_SET_ERR_MSG(extack, "Can not enslave VLAN challenged device to VLAN enabled bond"); netdev_err(bond_dev, "Error: cannot enslave VLAN challenged slave %s on VLAN enabled bond %s\n", slave_dev->name, bond_dev->name); return -EPERM; @@ -1383,6 +1386,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, * enslaving it; the old ifenslave will not. */ if (slave_dev->flags & IFF_UP) { + NL_SET_ERR_MSG(extack, "Device can not be enslaved while up"); netdev_err(bond_dev, "%s is up - this may be due to an out of date ifenslave\n", slave_dev->name); return -EPERM; @@ -1423,6 +1427,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, bond_dev); } } else if (bond_dev->type != slave_dev->type) { + NL_SET_ERR_MSG(extack, "Device type is different from other slaves"); netdev_err(bond_dev, "%s ether type (%d) is different from other slaves (%d), can not enslave it\n", slave_dev->name, slave_dev->type, bond_dev->type); return -EINVAL; @@ -1430,6 +1435,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, if (slave_dev->type == ARPHRD_INFINIBAND && BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP) { + NL_SET_ERR_MSG(extack, "Only active-backup mode is supported for infiniband slaves"); netdev_warn(bond_dev, "Type (%d) supports only active-backup mode\n", slave_dev->type); res = -EOPNOTSUPP; @@ -1445,6 +1451,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, bond->params.fail_over_mac = BOND_FOM_ACTIVE; netdev_warn(bond_dev, "Setting fail_over_mac to active for active-backup mode\n"); } else { + NL_SET_ERR_MSG(extack, "Slave device does not support setting the MAC address, but fail_over_mac is not set to active"); netdev_err(bond_dev, "The slave device specified does not support setting the MAC address, but fail_over_mac is not set to active\n"); res = -EOPNOTSUPP; goto err_undo_flags; -- cgit v1.2.3 From 4597efe312567591e253248246ef58d77df471c6 Mon Sep 17 00:00:00 2001 From: Xin Long Date: Tue, 24 Oct 2017 13:54:18 +0800 Subject: bonding: remove rtmsg_ifinfo called in bond_master_upper_dev_link Since commit 42e52bf9e3ae ("net: add netnotifier event for upper device change"), netdev_master_upper_dev_link has generated NETDEV_CHANGEUPPER event which would send a notification to userspace in rtnetlink_event. There's no need to call rtmsg_ifinfo to send the notification any more. So this patch is to remove it from bond_master_upper_dev_link as well as bond_upper_dev_unlink to avoid the redundant notifications. Signed-off-by: Xin Long Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'drivers/net/bonding') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 172eeeb68152..18b58e1376f1 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1221,22 +1221,17 @@ static int bond_master_upper_dev_link(struct bonding *bond, struct slave *slave, struct netlink_ext_ack *extack) { struct netdev_lag_upper_info lag_upper_info; - int err; lag_upper_info.tx_type = bond_lag_tx_type(bond); - err = netdev_master_upper_dev_link(slave->dev, bond->dev, slave, - &lag_upper_info, extack); - if (err) - return err; - rtmsg_ifinfo(RTM_NEWLINK, slave->dev, IFF_SLAVE, GFP_KERNEL); - return 0; + + return netdev_master_upper_dev_link(slave->dev, bond->dev, slave, + &lag_upper_info, extack); } static void bond_upper_dev_unlink(struct bonding *bond, struct slave *slave) { netdev_upper_dev_unlink(slave->dev, bond->dev); slave->dev->flags &= ~IFF_SLAVE; - rtmsg_ifinfo(RTM_NEWLINK, slave->dev, IFF_SLAVE, GFP_KERNEL); } static struct slave *bond_alloc_slave(struct bonding *bond) -- cgit v1.2.3