path: root/drivers/infiniband/core/roce_gid_mgmt.c
diff options
authorParav Pandit <parav@mellanox.com>2018-04-23 16:58:19 +0300
committerDoug Ledford <dledford@redhat.com>2018-04-23 17:28:18 -0400
commitdc5640f294e4ff6b89047cb4a0dfa931d5f0cd1f (patch)
tree7fd03f1654ba12b3ee8afa92dbc58796537d91ba /drivers/infiniband/core/roce_gid_mgmt.c
parentIB/core: Fix to avoid deleting IPv6 look alike default GIDs (diff)
IB/core: Fix deleting default GIDs when changing mac adddress
Before [1], When MAC address of the netdevice is changed, default GID is supposed to get deleted and added back which affects the node and/or port GUID in below sequence. netdevice_event() -> NETDEV_CHANGEADDR default_del_cmd() del_netdev_default_ips() bond_delete_netdev_default_gids() ib_cache_gid_set_default_gid() ib_cache_gid_del() add_cmd() [..] However, ib_cache_gid_del() was not getting invoked in non bonding scenarios because event_ndev and rdma_ndev are same. Therefore, fix such condition to ignore checking upper device when event ndev and rdma_dev are same; similar to bond_set_netdev_default_gids(). Which this fix ib_cache_gid_del() is invoked correctly; however ib_cache_gid_del() doesn't find the default GID for deletion because find_gid() was given default_gid = false with GID_ATTR_FIND_MASK_DEFAULT set. But it was getting overwritten by ib_cache_gid_set_default_gid() later on as part of add_cmd(). Therefore, mac address change used to work for default GID. With refactor series [1], this incorrect behavior is detected. Therefore, when deleting default GID, set default_gid and set MASK flag. when deleting IP based GID, clear default_gid and set MASK flag. [1] https://patchwork.kernel.org/patch/10319151/ Fixes: 238fdf48f2b5 ("IB/core: Add RoCE table bonding support") Fixes: 598ff6bae689 ("IB/core: Refactor GID modify code for RoCE") Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/roce_gid_mgmt.c')
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/infiniband/core/roce_gid_mgmt.c b/drivers/infiniband/core/roce_gid_mgmt.c
index cc2966380c0c..c0e4fd55e2cc 100644
--- a/drivers/infiniband/core/roce_gid_mgmt.c
+++ b/drivers/infiniband/core/roce_gid_mgmt.c
@@ -255,6 +255,7 @@ static void bond_delete_netdev_default_gids(struct ib_device *ib_dev,
struct net_device *rdma_ndev)
struct net_device *real_dev = rdma_vlan_dev_real_dev(event_ndev);
+ unsigned long gid_type_mask;
if (!rdma_ndev)
@@ -264,21 +265,22 @@ static void bond_delete_netdev_default_gids(struct ib_device *ib_dev,
- if (rdma_is_upper_dev_rcu(rdma_ndev, event_ndev) &&
- is_eth_active_slave_of_bonding_rcu(rdma_ndev, real_dev) ==
- unsigned long gid_type_mask;
+ if (((rdma_ndev != event_ndev &&
+ !rdma_is_upper_dev_rcu(rdma_ndev, event_ndev)) ||
+ is_eth_active_slave_of_bonding_rcu(rdma_ndev, real_dev)
+ ==
+ return;
+ }
- gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
+ rcu_read_unlock();
- ib_cache_gid_set_default_gid(ib_dev, port, rdma_ndev,
- gid_type_mask,
- } else {
- rcu_read_unlock();
- }
+ gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
+ ib_cache_gid_set_default_gid(ib_dev, port, rdma_ndev,
+ gid_type_mask,
static void enum_netdev_ipv4_ips(struct ib_device *ib_dev,