diff options
| author | Aviv Heller | 2016-06-04 14:15:21 +0200 |
|---|---|---|
| committer | Doug Ledford | 2016-06-07 15:50:53 +0200 |
| commit | 8e787646fbce895c20c4433973e90af90e1c6a28 (patch) | |
| tree | 1065a41d5c799a15d9d0ef0d8f6af4589fe45c07 /drivers/infiniband/core/cache.c | |
| parent | IB/IPoIB: Fix race between ipoib_remove_one to sysfs functions (diff) | |
| download | kernel-qcow2-linux-8e787646fbce895c20c4433973e90af90e1c6a28.tar.gz kernel-qcow2-linux-8e787646fbce895c20c4433973e90af90e1c6a28.tar.xz kernel-qcow2-linux-8e787646fbce895c20c4433973e90af90e1c6a28.zip | |
IB/core: Fix removal of default GID cache entry
When deleting a default GID from the cache, its gid_type field is set
to 0.
This could set the gid_type to RoCE v1 for a RoCE v2 default GID,
essentially making it inaccessible to future modifications, since it
is no longer found by find_gid().
This fix preserves the gid_type value for default gids during cache
operations.
Fixes: b39ffa1df505 ('IB/core: Add gid_type to gid attribute')
Signed-off-by: Aviv Heller <avivh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/cache.c')
| -rw-r--r-- | drivers/infiniband/core/cache.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index c2e257d97eff..040966775f40 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -178,6 +178,7 @@ static int write_gid(struct ib_device *ib_dev, u8 port, { int ret = 0; struct net_device *old_net_dev; + enum ib_gid_type old_gid_type; /* in rdma_cap_roce_gid_table, this funciton should be protected by a * sleep-able lock. @@ -199,6 +200,7 @@ static int write_gid(struct ib_device *ib_dev, u8 port, } old_net_dev = table->data_vec[ix].attr.ndev; + old_gid_type = table->data_vec[ix].attr.gid_type; if (old_net_dev && old_net_dev != attr->ndev) dev_put(old_net_dev); /* if modify_gid failed, just delete the old gid */ @@ -207,10 +209,14 @@ static int write_gid(struct ib_device *ib_dev, u8 port, attr = &zattr; table->data_vec[ix].context = NULL; } - if (default_gid) - table->data_vec[ix].props |= GID_TABLE_ENTRY_DEFAULT; + memcpy(&table->data_vec[ix].gid, gid, sizeof(*gid)); memcpy(&table->data_vec[ix].attr, attr, sizeof(*attr)); + if (default_gid) { + table->data_vec[ix].props |= GID_TABLE_ENTRY_DEFAULT; + if (action == GID_TABLE_WRITE_ACTION_DEL) + table->data_vec[ix].attr.gid_type = old_gid_type; + } if (table->data_vec[ix].attr.ndev && table->data_vec[ix].attr.ndev != old_net_dev) dev_hold(table->data_vec[ix].attr.ndev); |