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author | 2015-12-23 14:56:55 +0200 | |
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committer | 2015-12-23 10:39:52 -0500 | |
commit | 045959db65c67d7189dc89ecddb5fa10aafa449d (patch) | |
tree | 6b29c2d20fa2a8eb119f90221c04762c7ef75f2d /drivers/infiniband/core/cache.c | |
parent | IB/rdma_cm: Add wrapper for cma reference count (diff) | |
download | linux-045959db65c67d7189dc89ecddb5fa10aafa449d.tar.gz linux-045959db65c67d7189dc89ecddb5fa10aafa449d.tar.bz2 linux-045959db65c67d7189dc89ecddb5fa10aafa449d.zip |
IB/cma: Add configfs for rdma_cm
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 <IB device name> 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 <matanb@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/cache.c')
-rw-r--r-- | drivers/infiniband/core/cache.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 4a2968b1cf56..92cadbddbe49 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -140,6 +140,30 @@ const char *ib_cache_gid_type_str(enum ib_gid_type gid_type) } EXPORT_SYMBOL(ib_cache_gid_type_str); +int ib_cache_gid_parse_type_str(const char *buf) +{ + unsigned int i; + size_t len; + int err = -EINVAL; + + len = strlen(buf); + if (len == 0) + return -EINVAL; + + if (buf[len - 1] == '\n') + len--; + + for (i = 0; i < ARRAY_SIZE(gid_type_str); ++i) + if (gid_type_str[i] && !strncmp(buf, gid_type_str[i], len) && + len == strlen(gid_type_str[i])) { + err = i; + break; + } + + return err; +} +EXPORT_SYMBOL(ib_cache_gid_parse_type_str); + /* This function expects that rwlock will be write locked in all * scenarios and that lock will be locked in sleep-able (RoCE) * scenarios. |