diff options
| -rw-r--r-- | drivers/net/bonding/bond_main.c | 53 | ||||
| -rw-r--r-- | drivers/net/macvlan.c | 10 | ||||
| -rw-r--r-- | drivers/net/team/team.c | 34 | ||||
| -rw-r--r-- | include/linux/if_vlan.h | 12 | ||||
| -rw-r--r-- | net/8021q/vlan.c | 14 | ||||
| -rw-r--r-- | net/8021q/vlan_core.c | 23 |
6 files changed, 87 insertions, 59 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index d72c37f03e50..0c0dacba1f51 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -431,17 +431,13 @@ int bond_dev_queue_xmit(struct bonding *bond, struct sk_buff *skb, static int bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) { struct bonding *bond = netdev_priv(bond_dev); - struct slave *slave; + struct slave *slave, *stop_at; int i, res; bond_for_each_slave(bond, slave, i) { - struct net_device *slave_dev = slave->dev; - const struct net_device_ops *slave_ops = slave_dev->netdev_ops; - - if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && - slave_ops->ndo_vlan_rx_add_vid) { - slave_ops->ndo_vlan_rx_add_vid(slave_dev, vid); - } + res = vlan_vid_add(slave->dev, vid); + if (res) + goto unwind; } res = bond_add_vlan(bond, vid); @@ -452,6 +448,14 @@ static int bond_vlan_rx_add_vid(struct net_device *bond_dev, uint16_t vid) } return 0; + +unwind: + /* unwind from head to the slave that failed */ + stop_at = slave; + bond_for_each_slave_from_to(bond, slave, i, bond->first_slave, stop_at) + vlan_vid_del(slave->dev, vid); + + return res; } /** @@ -465,15 +469,8 @@ static int bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) struct slave *slave; int i, res; - bond_for_each_slave(bond, slave, i) { - struct net_device *slave_dev = slave->dev; - const struct net_device_ops *slave_ops = slave_dev->netdev_ops; - - if ((slave_dev->features & NETIF_F_HW_VLAN_FILTER) && - slave_ops->ndo_vlan_rx_kill_vid) { - slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vid); - } - } + bond_for_each_slave(bond, slave, i) + vlan_vid_del(slave->dev, vid); res = bond_del_vlan(bond, vid); if (res) { @@ -488,30 +485,26 @@ static int bond_vlan_rx_kill_vid(struct net_device *bond_dev, uint16_t vid) static void bond_add_vlans_on_slave(struct bonding *bond, struct net_device *slave_dev) { struct vlan_entry *vlan; - const struct net_device_ops *slave_ops = slave_dev->netdev_ops; - - if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || - !(slave_ops->ndo_vlan_rx_add_vid)) - return; + int res; - list_for_each_entry(vlan, &bond->vlan_list, vlan_list) - slave_ops->ndo_vlan_rx_add_vid(slave_dev, vlan->vlan_id); + list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { + res = vlan_vid_add(slave_dev, vlan->vlan_id); + if (res) + pr_warning("%s: Failed to add vlan id %d to device %s\n", + bond->dev->name, vlan->vlan_id, + slave_dev->name); + } } static void bond_del_vlans_from_slave(struct bonding *bond, struct net_device *slave_dev) { - const struct net_device_ops *slave_ops = slave_dev->netdev_ops; struct vlan_entry *vlan; - if (!(slave_dev->features & NETIF_F_HW_VLAN_FILTER) || - !(slave_ops->ndo_vlan_rx_kill_vid)) - return; - list_for_each_entry(vlan, &bond->vlan_list, vlan_list) { if (!vlan->vlan_id) continue; - slave_ops->ndo_vlan_rx_kill_vid(slave_dev, vlan->vlan_id); + vlan_vid_del(slave_dev, vlan->vlan_id); } } diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 2511bc5c34f3..f2f820c4b40a 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -26,6 +26,7 @@ #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/if_arp.h> +#include <linux/if_vlan.h> #include <linux/if_link.h> #include <linux/if_macvlan.h> #include <net/rtnetlink.h> @@ -525,11 +526,8 @@ static int macvlan_vlan_rx_add_vid(struct net_device *dev, { struct macvlan_dev *vlan = netdev_priv(dev); struct net_device *lowerdev = vlan->lowerdev; - const struct net_device_ops *ops = lowerdev->netdev_ops; - if (ops->ndo_vlan_rx_add_vid) - return ops->ndo_vlan_rx_add_vid(lowerdev, vid); - return 0; + return vlan_vid_add(lowerdev, vid); } static int macvlan_vlan_rx_kill_vid(struct net_device *dev, @@ -537,10 +535,8 @@ static int macvlan_vlan_rx_kill_vid(struct net_device *dev, { struct macvlan_dev *vlan = netdev_priv(dev); struct net_device *lowerdev = vlan->lowerdev; - const struct net_device_ops *ops = lowerdev->netdev_ops; - if (ops->ndo_vlan_rx_kill_vid) - return ops->ndo_vlan_rx_kill_vid(lowerdev, vid); + vlan_vid_del(lowerdev, vid); return 0; } diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 8e8bf958539e..79c2d1b52eb6 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -18,6 +18,7 @@ #include <linux/ctype.h> #include <linux/notifier.h> #include <linux/netdevice.h> +#include <linux/if_vlan.h> #include <linux/if_arp.h> #include <linux/socket.h> #include <linux/etherdevice.h> @@ -906,17 +907,28 @@ static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid) { struct team *team = netdev_priv(dev); struct team_port *port; + int err; - rcu_read_lock(); - list_for_each_entry_rcu(port, &team->port_list, list) { - const struct net_device_ops *ops = port->dev->netdev_ops; - - if (ops->ndo_vlan_rx_add_vid) - ops->ndo_vlan_rx_add_vid(port->dev, vid); + /* + * Alhough this is reader, it's guarded by team lock. It's not possible + * to traverse list in reverse under rcu_read_lock + */ + mutex_lock(&team->lock); + list_for_each_entry(port, &team->port_list, list) { + err = vlan_vid_add(port->dev, vid); + if (err) + goto unwind; } - rcu_read_unlock(); + mutex_unlock(&team->lock); return 0; + +unwind: + list_for_each_entry_continue_reverse(port, &team->port_list, list) + vlan_vid_del(port->dev, vid); + mutex_unlock(&team->lock); + + return err; } static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) @@ -925,12 +937,8 @@ static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) struct team_port *port; rcu_read_lock(); - list_for_each_entry_rcu(port, &team->port_list, list) { - const struct net_device_ops *ops = port->dev->netdev_ops; - - if (ops->ndo_vlan_rx_kill_vid) - ops->ndo_vlan_rx_kill_vid(port->dev, vid); - } + list_for_each_entry_rcu(port, &team->port_list, list) + vlan_vid_del(port->dev, vid); rcu_read_unlock(); return 0; diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index 31d7c976f063..71168a6f3347 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -109,6 +109,9 @@ extern u16 vlan_dev_vlan_id(const struct net_device *dev); extern bool vlan_do_receive(struct sk_buff **skb, bool last_handler); extern struct sk_buff *vlan_untag(struct sk_buff *skb); +extern int vlan_vid_add(struct net_device *dev, unsigned short vid); +extern void vlan_vid_del(struct net_device *dev, unsigned short vid); + #else static inline struct net_device * __vlan_find_dev_deep(struct net_device *real_dev, u16 vlan_id) @@ -139,6 +142,15 @@ static inline struct sk_buff *vlan_untag(struct sk_buff *skb) { return skb; } + +static inline int vlan_vid_add(struct net_device *dev, unsigned short vid) +{ + return 0; +} + +static inline void vlan_vid_del(struct net_device *dev, unsigned short vid) +{ +} #endif /** diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index e075625efeeb..dd9aa400888b 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -101,7 +101,6 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) { struct vlan_dev_priv *vlan = vlan_dev_priv(dev); struct net_device *real_dev = vlan->real_dev; - const struct net_device_ops *ops = real_dev->netdev_ops; struct vlan_group *grp; u16 vlan_id = vlan->vlan_id; @@ -114,8 +113,8 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) * HW accelerating devices or SW vlan input packet processing if * VLAN is not 0 (leave it there for 802.1p). */ - if (vlan_id && (real_dev->features & NETIF_F_HW_VLAN_FILTER)) - ops->ndo_vlan_rx_kill_vid(real_dev, vlan_id); + if (vlan_id) + vlan_vid_del(real_dev, vlan_id); grp->nr_vlans--; @@ -169,7 +168,6 @@ int register_vlan_dev(struct net_device *dev) { struct vlan_dev_priv *vlan = vlan_dev_priv(dev); struct net_device *real_dev = vlan->real_dev; - const struct net_device_ops *ops = real_dev->netdev_ops; u16 vlan_id = vlan->vlan_id; struct vlan_group *grp, *ngrp = NULL; int err; @@ -207,8 +205,7 @@ int register_vlan_dev(struct net_device *dev) if (ngrp) { rcu_assign_pointer(real_dev->vlgrp, ngrp); } - if (real_dev->features & NETIF_F_HW_VLAN_FILTER) - ops->ndo_vlan_rx_add_vid(real_dev, vlan_id); + vlan_vid_add(real_dev, vlan_id); return 0; @@ -369,11 +366,10 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event, __vlan_device_event(dev, event); if ((event == NETDEV_UP) && - (dev->features & NETIF_F_HW_VLAN_FILTER) && - dev->netdev_ops->ndo_vlan_rx_add_vid) { + (dev->features & NETIF_F_HW_VLAN_FILTER)) { pr_info("adding VLAN 0 to HW filter on device %s\n", dev->name); - dev->netdev_ops->ndo_vlan_rx_add_vid(dev, 0); + vlan_vid_add(dev, 0); } grp = rtnl_dereference(dev->vlgrp); diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index 85241f044294..544f9cb9678c 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -146,3 +146,26 @@ err_free: kfree_skb(skb); return NULL; } + +int vlan_vid_add(struct net_device *dev, unsigned short vid) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if ((dev->features & NETIF_F_HW_VLAN_FILTER) && + ops->ndo_vlan_rx_add_vid) { + return ops->ndo_vlan_rx_add_vid(dev, vid); + } + return 0; +} +EXPORT_SYMBOL(vlan_vid_add); + +void vlan_vid_del(struct net_device *dev, unsigned short vid) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if ((dev->features & NETIF_F_HW_VLAN_FILTER) && + ops->ndo_vlan_rx_kill_vid) { + ops->ndo_vlan_rx_kill_vid(dev, vid); + } +} +EXPORT_SYMBOL(vlan_vid_del); |