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| author | Chuck Lever <chuck.lever@oracle.com> | 2026-04-19 21:53:02 +0300 |
|---|---|---|
| committer | Chuck Lever <cel@kernel.org> | 2026-06-09 23:32:59 +0300 |
| commit | 978cda83de411fcbff22ac5b2b0024cae7df806f (patch) | |
| tree | 2e1ada501f3502d81a7e22bf852f4de8aea4ddb0 /include | |
| parent | 0a7c2aa5844c9ad57bee914d46bc1f84b2fd96a0 (diff) | |
| download | linux-978cda83de411fcbff22ac5b2b0024cae7df806f.tar.xz | |
NFSD: Add NFSD_CMD_UNLOCK_IP netlink command
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/nfsd_netlink.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/uapi/linux/nfsd_netlink.h b/include/uapi/linux/nfsd_netlink.h index 060c43675599..90ef1e686769 100644 --- a/include/uapi/linux/nfsd_netlink.h +++ b/include/uapi/linux/nfsd_netlink.h @@ -205,6 +205,13 @@ enum { }; enum { + NFSD_A_UNLOCK_IP_ADDRESS = 1, + + __NFSD_A_UNLOCK_IP_MAX, + NFSD_A_UNLOCK_IP_MAX = (__NFSD_A_UNLOCK_IP_MAX - 1) +}; + +enum { NFSD_CMD_RPC_STATUS_GET = 1, NFSD_CMD_THREADS_SET, NFSD_CMD_THREADS_GET, @@ -220,6 +227,7 @@ enum { NFSD_CMD_EXPKEY_GET_REQS, NFSD_CMD_EXPKEY_SET_REQS, NFSD_CMD_CACHE_FLUSH, + NFSD_CMD_UNLOCK_IP, __NFSD_CMD_MAX, NFSD_CMD_MAX = (__NFSD_CMD_MAX - 1) |