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IB/core: Updating cache for subnet_prefix in config_non_roce_gid_cache()

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Currently, cache for subnet_prefix was getting updated by reading port
attributes via ib_query_port. ib_query_port() calls ops.query_gid() to get
subnet_prefix and returns it via port_attr.

In ib_cache_update(), config_non_roce_gid_cache() obtains GIDs by calling
ops.query_gid(). We utilize this to store subnet_prefix in cache.

Link: https://lore.kernel.org/r/20210712122625.1147-2-anand.a.khoje@oracle.com
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Suggested-by: Aru Kolappan <aru.kolappan@oracle.com>
Signed-off-by: Anand Khoje <anand.a.khoje@oracle.com>
Signed-off-by: Haakon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Anand Khoje 2021-07-12 17:56:23 +05:30 committed by Jason Gunthorpe
parent 8c1b4316c3
commit 0bc0602ae8
1 changed files with 5 additions and 3 deletions
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8
drivers/infiniband/core/cache.c
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@ -1429,7 +1429,7 @@ int rdma_read_gid_l2_fields(const struct ib_gid_attr *attr,
EXPORT_SYMBOL(rdma_read_gid_l2_fields);
static int config_non_roce_gid_cache(struct ib_device *device,
u32 port, int gid_tbl_len)
u32 port, struct ib_port_attr *tprops)
{
struct ib_gid_attr gid_attr = {};
struct ib_gid_table *table;
@ -1441,7 +1441,7 @@ static int config_non_roce_gid_cache(struct ib_device *device,
table = rdma_gid_table(device, port);
mutex_lock(&table->lock);
for (i = 0; i < gid_tbl_len; ++i) {
for (i = 0; i < tprops->gid_tbl_len; ++i) {
if (!device->ops.query_gid)
continue;
ret = device->ops.query_gid(device, port, i, &gid_attr.gid);
@ -1452,6 +1452,8 @@ static int config_non_roce_gid_cache(struct ib_device *device,
goto err;
}
gid_attr.index = i;
tprops->subnet_prefix =
be64_to_cpu(gid_attr.gid.global.subnet_prefix);
add_modify_gid(table, &gid_attr);
}
err:
@ -1484,7 +1486,7 @@ ib_cache_update(struct ib_device *device, u32 port, bool update_gids,
if (!rdma_protocol_roce(device, port) && update_gids) {
ret = config_non_roce_gid_cache(device, port,
tprops->gid_tbl_len);
tprops);
if (ret)
goto err;
}