ibstat: ignore non-RDMA endpoint devices when umad_get_ca() fails#1722
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rleon merged 1 commit intolinux-rdma:masterfrom Apr 15, 2026
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ibstat: ignore non-RDMA endpoint devices when umad_get_ca() fails#1722rleon merged 1 commit intolinux-rdma:masterfrom
rleon merged 1 commit intolinux-rdma:masterfrom
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Hi, Could you please review the changes for ibstat command. Thanks, |
When umad_get_ca() fails, ibstat currently propagates the error even for devices that are not usable RDMA endpoints. Add lightweight sysfs checks to detect non-endpoint devices by verifying either the presence of port GID 0 (ports/<n>/gids/0) or the Connection Manager capability bit (port cap_mask bit 16). If neither is present, treat the device as non-RDMA and return 0 instead of failing. This improves behavior on systems exposing non-endpoint IB-class devices under /sys/class/infiniband/. Signed-off-by: Nagappan Ramasamy Palaniappan <nagappan.ramasamy.palaniappan@oracle.com>
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Hi @rleon , Could you please review this change for ibstat command. Thanks, |
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Orabug: 38502630
When umad_get_ca() fails, ibstat currently propagates the error even for devices that are not usable RDMA endpoints.
Add lightweight sysfs checks to detect non-endpoint devices by verifying either the presence of port GID 0 (ports//gids/0) or the Connection Manager capability bit (port cap_mask bit 16). If neither is present, treat the device as non-RDMA and return 0 instead of failing.
This improves behavior on systems exposing non-endpoint IB-class devices under /sys/class/infiniband/.