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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: 238fdf48f2 ("IB/core: Add RoCE table bonding support")
Fixes: 598ff6bae6 ("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>
This commit is contained in:
Parav Pandit 2018-04-23 16:58:19 +03:00 committed by Doug Ledford
parent 22c01ee4b8
commit dc5640f294
2 changed files with 30 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/infiniband/core/cache.c
View File

@ -427,7 +427,7 @@ int ib_cache_gid_add(struct ib_device *ib_dev, u8 port,
static int
_ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
union ib_gid *gid, struct ib_gid_attr *attr,
bool default_gid)
unsigned long mask, bool default_gid)
{
struct ib_gid_table *table;
int ret = 0;
@ -437,12 +437,7 @@ _ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
mutex_lock(&table->lock);
ix = find_gid(table, gid, attr, default_gid,
GID_ATTR_FIND_MASK_GID |
GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_DEFAULT |
GID_ATTR_FIND_MASK_NETDEV,
NULL);
ix = find_gid(table, gid, attr, default_gid, mask, NULL);
if (ix < 0) {
ret = -EINVAL;
goto out_unlock;
@ -462,7 +457,12 @@ out_unlock:
int ib_cache_gid_del(struct ib_device *ib_dev, u8 port,
union ib_gid *gid, struct ib_gid_attr *attr)
{
return _ib_cache_gid_del(ib_dev, port, gid, attr, false);
unsigned long mask = GID_ATTR_FIND_MASK_GID |
GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_DEFAULT |
GID_ATTR_FIND_MASK_NETDEV;
return _ib_cache_gid_del(ib_dev, port, gid, attr, mask, false);
}
int ib_cache_gid_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
@ -741,7 +741,7 @@ void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
unsigned long gid_type_mask,
enum ib_cache_gid_default_mode mode)
{
union ib_gid gid;
union ib_gid gid = { };
struct ib_gid_attr gid_attr;
struct ib_gid_table *table;
unsigned int gid_type;
@ -749,7 +749,9 @@ void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
table = ib_dev->cache.ports[port - rdma_start_port(ib_dev)].gid;
make_default_gid(ndev, &gid);
mask = GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_DEFAULT |
GID_ATTR_FIND_MASK_NETDEV;
memset(&gid_attr, 0, sizeof(gid_attr));
gid_attr.ndev = ndev;
@ -760,12 +762,12 @@ void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
gid_attr.gid_type = gid_type;
if (mode == IB_CACHE_GID_DEFAULT_MODE_SET) {
mask = GID_ATTR_FIND_MASK_GID_TYPE |
GID_ATTR_FIND_MASK_DEFAULT;
make_default_gid(ndev, &gid);
__ib_cache_gid_add(ib_dev, port, &gid,
&gid_attr, mask, true);
} else if (mode == IB_CACHE_GID_DEFAULT_MODE_DELETE) {
_ib_cache_gid_del(ib_dev, port, &gid, &gid_attr, true);
_ib_cache_gid_del(ib_dev, port, &gid,
&gid_attr, mask, true);
}
}
}

28
drivers/infiniband/core/roce_gid_mgmt.c
View File

@ -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)
return;
@ -264,21 +265,22 @@ static void bond_delete_netdev_default_gids(struct ib_device *ib_dev,
rcu_read_lock();
if (rdma_is_upper_dev_rcu(rdma_ndev, event_ndev) &&
is_eth_active_slave_of_bonding_rcu(rdma_ndev, real_dev) ==
BONDING_SLAVE_STATE_INACTIVE) {
unsigned long gid_type_mask;
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,
IB_CACHE_GID_DEFAULT_MODE_DELETE);
} else {
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)
==
BONDING_SLAVE_STATE_INACTIVE)) {
rcu_read_unlock();
return;
}
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,
IB_CACHE_GID_DEFAULT_MODE_DELETE);
}
static void enum_netdev_ipv4_ips(struct ib_device *ib_dev,