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| author | Or Har-Toov <ohartoov@nvidia.com> | 2025-12-18 17:58:32 +0200 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2026-01-05 02:42:53 -0500 |
| commit | 2941abac6d0bffd6bf8f438135505b39168a0a08 (patch) | |
| tree | d64e679beca447cf6f4b648cf0109042ab45fb74 /include/rdma | |
| parent | 263d1d9975b5ac2b813c3107fe21c957b57f0a59 (diff) | |
| download | linux-2941abac6d0bffd6bf8f438135505b39168a0a08.tar.gz linux-2941abac6d0bffd6bf8f438135505b39168a0a08.tar.bz2 linux-2941abac6d0bffd6bf8f438135505b39168a0a08.zip | |
IB/core: Add helper to convert port attributes to data rate
Introduce ib_port_attr_to_rate() to compute the data rate in 100 Mbps
units (deci-Gb/sec) from a port's active_speed and active_width
attributes. This generic helper removes duplicated speed-to-rate
calculations, which are used by sysfs and the upcoming new verb.
Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 95f1e557cbb8..b984f9581a73 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -878,6 +878,20 @@ __attribute_const__ int ib_rate_to_mult(enum ib_rate rate); */ __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate); +struct ib_port_speed_info { + const char *str; + int rate; /* in deci-Gb/sec (100 MBps units) */ +}; + +/** + * ib_port_attr_to_speed_info - Convert port attributes to speed information + * @attr: Port attributes containing active_speed and active_width + * @speed_info: Speed information to return + * + * Returns 0 on success, -EINVAL on error. + */ +int ib_port_attr_to_speed_info(struct ib_port_attr *attr, + struct ib_port_speed_info *speed_info); /** * enum ib_mr_type - memory region type |