kernel/linux.git/drivers/infiniband/core/cache.c, branch v4.8.16

IB/core: Fix no default GIDs when netdevice reregisters

2016-06-23T14:03:57+00:00

Currently, when the netdevice returned by get_netdev is unregistered, we delete all GIDs (including the default GIDs) and reset their attributes. Therefore, when we re-register it, no default GIDs will be assigned (as their "default GID") attribute will be reset. Fixing this by keeping "default GID" attribute. Fixes: 03db3a2d81e6 ('IB/core: Add RoCE GID table management') Signed-off-by: Talat Batheesh Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford

IB/core: Fix removal of default GID cache entry

2016-06-07T13:50:53+00:00

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 Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford

IB/core: Fix oops in ib_cache_gid_set_default_gid

2016-04-23T00:26:44+00:00

When we fail to find the default gid index, we can't continue processing in this routine or else we will pass a negative index to later routines resulting in invalid memory access attempts and a kernel oops. Fixes: 03db3a2d81e6 (IB/core: Add RoCE GID table management) Signed-off-by: Doug Ledford

IB/core: trivial prink cleanup.

2016-03-03T15:20:25+00:00

1. Replaced printk with appropriate pr_warn, pr_err, pr_info. 2. Removed unnecessary prints around memory allocation failure which are not required, as reported by the checkpatch script. Signed-off-by: Parav Pandit Reviewed-by: Haggai Eran Reviewed-by: Sagi Grimberg Signed-off-by: Doug Ledford

IB/core: Eliminate sparse false context imbalance warning

2016-01-19T20:26:21+00:00

When write_gid function needs to do a sleep-able operation, it unlocks table->rwlock and then relocks it. Sparse complains about context imbalance. This is safe as write_gid is always called with table->rwlock. write_gid protects from simultaneous writes to this GID entry by setting the GID_TABLE_ENTRY_INVALID flag. Fixes: 9c584f049596 ('IB/core: Change per-entry lock in RoCE GID table to one lock') Signed-off-by: Matan Barak Signed-off-by: Doug Ledford

IB/cma: Add configfs for rdma_cm

2015-12-23T15:39:52+00:00

Users would like to control the behaviour of rdma_cm. For example, old applications which don't set the required RoCE gid type could be executed on RoCE V2 network types. In order to support this configuration, we implement a configfs for rdma_cm. In order to use the configfs, one needs to mount it and mkdir inside rdma_cm directory. The patch adds support for a single configuration file, default_roce_mode. The mode can either be "IB/RoCE v1" or "RoCE v2". Signed-off-by: Matan Barak Signed-off-by: Doug Ledford

IB/core: Add ROCE_UDP_ENCAP (RoCE V2) type

2015-12-23T15:35:11+00:00

Adding RoCE v2 GID type and port type. Vendors which support this type will get their GID table populated with RoCE v2 GIDs automatically. Signed-off-by: Matan Barak Signed-off-by: Doug Ledford

IB/core: Add gid_type to gid attribute

2015-12-23T15:35:10+00:00

In order to support multiple GID types, we need to store the gid_type with each GID. This is also aligned with the RoCE v2 annex "RoCEv2 PORT GID table entries shall have a "GID type" attribute that denotes the L3 Address type". The currently supported GID is IB_GID_TYPE_IB which is also RoCE v1 GID type. This implies that gid_type should be added to roce_gid_table meta-data. Signed-off-by: Matan Barak Signed-off-by: Doug Ledford

IB/core: don't search the GID table twice

2015-12-23T15:32:06+00:00

Previously, we've searched the GID table twice: first when we searched the table for a GID matching the proposed new one, and second when we didn't find a match, we searched again for an empty GID slot in the table. Instead, search the table once noting the first empty slot as we search for our target GID. Signed-off-by: Matan Barak Reviewed-by: Haggai Eran Signed-off-by: Doug Ledford

IB/core: Change per-entry lock in RoCE GID table to one lock

2015-12-23T15:19:54+00:00

Previously, IB GID cached used a lock per entry. This could result in spending a lot of CPU cycles for locking and unlocking just in order to find a GID. Changing this in favor of one lock per a GID table. Signed-off-by: Matan Barak Reviewed-by: Haggai Eran Signed-off-by: Doug Ledford