This v7 of patch series is used to read the port_attribute subnet_prefix
from a valid cache entry instead of having to call
device->ops.query_gid() for Infiniband link-layer devices in
__ib_query_port().
In the event of a cache update, the value for subnet_prefix gets read
using device->ops.query_gid() in config_non_roce_gid_cache().
Anand Khoje (2):
IB/core: Updating cache for subnet_prefix in
config_non_roce_gid_cache()
IB/core: Read subnet_prefix in ib_query_port via cache.
---
v1 -> v2:
- Split the v1 patch in 3 patches as per Leon's suggestion.
v2 -> v3:
- Added changes as per Mark Zhang's suggestion of clearing
flags in git_table_cleanup_one().
v3 -> v4:
- Removed the enum ib_port_data_flags and 8 byte flags from
struct ib_port_data, and the set_bit()/clear_bit() API
used to update this flag as that was not necessary.
Done to keep the code simple.
- Added code to read subnet_prefix from updated GID cache in the
event of cache update. Prior to this change, ib_cache_update
was reading the value for subnet_prefix via ib_query_port(),
due to this patch, we ended up reading a stale cached value of
subnet_prefix.
v4 -> v5:
- Removed the code to reset cache_is_initialised bit from cleanup
as per Leon's suggestion.
- Removed ib_cache_is_initialised() function.
v5 -> v6:
- Added changes as per Jason's suggestion of updating subnet_prefix
in config_non_roce_gid_cache() and removing the flag
cache_is_initialized in __ib_query_port().
v6 -> v7:
- Added the flag cache_is_initialized back as removing the check
from __ib_query_port() resulted in access of cache_lock before
it was initialized.
---
Anand Khoje (2):
IB/core: Updating cache for subnet_prefix in
config_non_roce_gid_cache()
IB/core: Read subnet_prefix in ib_query_port via cache.
drivers/infiniband/core/cache.c | 9 ++++++---
drivers/infiniband/core/device.c | 9 +++++++++
include/rdma/ib_verbs.h | 1 +
3 files changed, 16 insertions(+), 3 deletions(-)
--
1.8.3.1
