RDMA/core: Allow detaching gid attribute netdevice for RoCE

Browse source

When there is active traffic through a GID, a QP/AH holds reference to
this GID entry. RoCE GID entry holds reference to its attached
netdevice. Due to this when netdevice is deleted by admin user, its
refcount is not dropped.

Therefore, while deleting RoCE GID, wait for all GID attribute's netdev
users to finish accessing netdev in rcu context.  Once all users done
accessing it, release the netdev refcount.

Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

...

This commit is contained in:

Parav Pandit 2019-05-02 10:48:07 +03:00 • committed by Jason Gunthorpe

parent 5102eca903

commit 943bd984b1

3 changed files with 71 additions and 17 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

73

drivers/infiniband/core/cache.c

View file

11

drivers/infiniband/core/sysfs.c

View file

2

include/rdma/ib_verbs.h

View file