diff options
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_ib.c | 109 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 67 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 10 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_verbs.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_vlan.c | 2 |
6 files changed, 187 insertions, 6 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h index c51f618f6120..bab7db6fa9ab 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib.h +++ b/drivers/infiniband/ulp/ipoib/ipoib.h @@ -92,6 +92,8 @@ enum { IPOIB_FLAG_UMCAST = 10, IPOIB_STOP_NEIGH_GC = 11, IPOIB_NEIGH_TBL_FLUSH = 12, + IPOIB_FLAG_DEV_ADDR_SET = 13, + IPOIB_FLAG_DEV_ADDR_CTRL = 14, IPOIB_MAX_BACKOFF_SECONDS = 16, diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index da5f28c892ca..7e9a77040a24 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -997,6 +997,106 @@ static inline int update_child_pkey(struct ipoib_dev_priv *priv) return 0; } +/* + * returns true if the device address of the ipoib interface has changed and the + * new address is a valid one (i.e in the gid table), return false otherwise. + */ +static bool ipoib_dev_addr_changed_valid(struct ipoib_dev_priv *priv) +{ + union ib_gid search_gid; + union ib_gid gid0; + union ib_gid *netdev_gid; + int err; + u16 index; + u8 port; + bool ret = false; + + netdev_gid = (union ib_gid *)(priv->dev->dev_addr + 4); + if (ib_query_gid(priv->ca, priv->port, 0, &gid0, NULL)) + return false; + + netif_addr_lock(priv->dev); + + /* The subnet prefix may have changed, update it now so we won't have + * to do it later + */ + priv->local_gid.global.subnet_prefix = gid0.global.subnet_prefix; + netdev_gid->global.subnet_prefix = gid0.global.subnet_prefix; + search_gid.global.subnet_prefix = gid0.global.subnet_prefix; + + search_gid.global.interface_id = priv->local_gid.global.interface_id; + + netif_addr_unlock(priv->dev); + + err = ib_find_gid(priv->ca, &search_gid, IB_GID_TYPE_IB, + priv->dev, &port, &index); + + netif_addr_lock(priv->dev); + + if (search_gid.global.interface_id != + priv->local_gid.global.interface_id) + /* There was a change while we were looking up the gid, bail + * here and let the next work sort this out + */ + goto out; + + /* The next section of code needs some background: + * Per IB spec the port GUID can't change if the HCA is powered on. + * port GUID is the basis for GID at index 0 which is the basis for + * the default device address of a ipoib interface. + * + * so it seems the flow should be: + * if user_changed_dev_addr && gid in gid tbl + * set bit dev_addr_set + * return true + * else + * return false + * + * The issue is that there are devices that don't follow the spec, + * they change the port GUID when the HCA is powered, so in order + * not to break userspace applications, We need to check if the + * user wanted to control the device address and we assume that + * if he sets the device address back to be based on GID index 0, + * he no longer wishs to control it. + * + * If the user doesn't control the the device address, + * IPOIB_FLAG_DEV_ADDR_SET is set and ib_find_gid failed it means + * the port GUID has changed and GID at index 0 has changed + * so we need to change priv->local_gid and priv->dev->dev_addr + * to reflect the new GID. + */ + if (!test_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags)) { + if (!err && port == priv->port) { + set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); + if (index == 0) + clear_bit(IPOIB_FLAG_DEV_ADDR_CTRL, + &priv->flags); + else + set_bit(IPOIB_FLAG_DEV_ADDR_CTRL, &priv->flags); + ret = true; + } else { + ret = false; + } + } else { + if (!err && port == priv->port) { + ret = true; + } else { + if (!test_bit(IPOIB_FLAG_DEV_ADDR_CTRL, &priv->flags)) { + memcpy(&priv->local_gid, &gid0, + sizeof(priv->local_gid)); + memcpy(priv->dev->dev_addr + 4, &gid0, + sizeof(priv->local_gid)); + ret = true; + } + } + } + +out: + netif_addr_unlock(priv->dev); + + return ret; +} + static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv, enum ipoib_flush_level level, int nesting) @@ -1018,6 +1118,9 @@ static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv, if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags) && level != IPOIB_FLUSH_HEAVY) { + /* Make sure the dev_addr is set even if not flushing */ + if (level == IPOIB_FLUSH_LIGHT) + ipoib_dev_addr_changed_valid(priv); ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_INITIALIZED not set.\n"); return; } @@ -1029,7 +1132,8 @@ static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv, update_parent_pkey(priv); else update_child_pkey(priv); - } + } else if (level == IPOIB_FLUSH_LIGHT) + ipoib_dev_addr_changed_valid(priv); ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_ADMIN_UP not set.\n"); return; } @@ -1081,7 +1185,8 @@ static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv, if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) { if (level >= IPOIB_FLUSH_NORMAL) ipoib_ib_dev_up(dev); - ipoib_mcast_restart_task(&priv->restart_task); + if (ipoib_dev_addr_changed_valid(priv)) + ipoib_mcast_restart_task(&priv->restart_task); } } diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 8bf1859ebed4..2c3fb5337bc1 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -99,6 +99,7 @@ static struct net_device *ipoib_get_net_dev_by_params( struct ib_device *dev, u8 port, u16 pkey, const union ib_gid *gid, const struct sockaddr *addr, void *client_data); +static int ipoib_set_mac(struct net_device *dev, void *addr); static struct ib_client ipoib_client = { .name = "ipoib", @@ -1722,6 +1723,7 @@ static const struct net_device_ops ipoib_netdev_ops_pf = { .ndo_get_vf_config = ipoib_get_vf_config, .ndo_get_vf_stats = ipoib_get_vf_stats, .ndo_set_vf_guid = ipoib_set_vf_guid, + .ndo_set_mac_address = ipoib_set_mac, }; static const struct net_device_ops ipoib_netdev_ops_vf = { @@ -1844,6 +1846,70 @@ int ipoib_add_umcast_attr(struct net_device *dev) return device_create_file(&dev->dev, &dev_attr_umcast); } +static void set_base_guid(struct ipoib_dev_priv *priv, union ib_gid *gid) +{ + struct ipoib_dev_priv *child_priv; + struct net_device *netdev = priv->dev; + + netif_addr_lock(netdev); + + memcpy(&priv->local_gid.global.interface_id, + &gid->global.interface_id, + sizeof(gid->global.interface_id)); + memcpy(netdev->dev_addr + 4, &priv->local_gid, sizeof(priv->local_gid)); + clear_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); + + netif_addr_unlock(netdev); + + if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { + down_read(&priv->vlan_rwsem); + list_for_each_entry(child_priv, &priv->child_intfs, list) + set_base_guid(child_priv, gid); + up_read(&priv->vlan_rwsem); + } +} + +static int ipoib_check_lladdr(struct net_device *dev, + struct sockaddr_storage *ss) +{ + union ib_gid *gid = (union ib_gid *)(ss->__data + 4); + int ret = 0; + + netif_addr_lock(dev); + + /* Make sure the QPN, reserved and subnet prefix match the current + * lladdr, it also makes sure the lladdr is unicast. + */ + if (memcmp(dev->dev_addr, ss->__data, + 4 + sizeof(gid->global.subnet_prefix)) || + gid->global.interface_id == 0) + ret = -EINVAL; + + netif_addr_unlock(dev); + + return ret; +} + +static int ipoib_set_mac(struct net_device *dev, void *addr) +{ + struct ipoib_dev_priv *priv = netdev_priv(dev); + struct sockaddr_storage *ss = addr; + int ret; + + if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev)) + return -EBUSY; + + ret = ipoib_check_lladdr(dev, ss); + if (ret) + return ret; + + set_base_guid(priv, (union ib_gid *)(ss->__data + 4)); + + queue_work(ipoib_workqueue, &priv->flush_light); + + return 0; +} + static ssize_t create_child(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) @@ -1967,6 +2033,7 @@ static struct net_device *ipoib_add_port(const char *format, goto device_init_failed; } else memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); + set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); result = ipoib_dev_init(priv->dev, hca, port); if (result < 0) { diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index fc3e50e8e391..82fbc9442608 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -582,11 +582,13 @@ void ipoib_mcast_join_task(struct work_struct *work) return; } priv->local_lid = port_attr.lid; + netif_addr_lock(dev); - if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid, NULL)) - ipoib_warn(priv, "ib_query_gid() failed\n"); - else - memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid)); + if (!test_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags)) { + netif_addr_unlock(dev); + return; + } + netif_addr_unlock(dev); spin_lock_irq(&priv->lock); if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) diff --git a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c index b809c373e40e..1e7cbbaa15bd 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c @@ -307,5 +307,8 @@ void ipoib_event(struct ib_event_handler *handler, queue_work(ipoib_workqueue, &priv->flush_normal); } else if (record->event == IB_EVENT_PKEY_CHANGE) { queue_work(ipoib_workqueue, &priv->flush_heavy); + } else if (record->event == IB_EVENT_GID_CHANGE && + !test_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags)) { + queue_work(ipoib_workqueue, &priv->flush_light); } } diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c index fca1a882de27..64a35595eab8 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c @@ -68,6 +68,8 @@ int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, priv->pkey = pkey; memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN); + memcpy(&priv->local_gid, &ppriv->local_gid, sizeof(priv->local_gid)); + set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); priv->dev->broadcast[8] = pkey >> 8; priv->dev->broadcast[9] = pkey & 0xff; |