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The existing write_unlock_ip procfs interface releases NLM file locks held by a specific client IP address, but procfs provides no structured way to extend that operation to other scopes such as revoking NFSv4 state. Add NFSD_CMD_UNLOCK_IP as a dedicated netlink command for releasing NLM locks by client address. The command accepts a binary sockaddr_in or sockaddr_in6 in its address attribute. The handler validates the address family and length, then calls nlmsvc_unlock_all_by_ip() to release matching NLM locks. Because lockd is a single global instance, that call operates across all network namespaces regardless of which namespace the caller inhabits. A separate netlink command for filesystem-scoped unlock is added in a subsequent commit. The nfsd_ctl_unlock_ip tracepoint is updated from string-based address logging to __sockaddr, which stores the binary sockaddr and formats it with %pISpc. This affects both the new netlink path and the existing procfs write_unlock_ip path, giving consistent structured output in both cases. Reviewed-by: Jeff Layton <jlayton@kernel.org> Tested-by: Dai Ngo <dai.ngo@oracle.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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| specs | ||
| genetlink-c.yaml | ||
| genetlink-legacy.yaml | ||
| genetlink.yaml | ||
| netlink-raw.yaml | ||