Merge tag 'nfsd-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd updates from Chuck Lever:
 "This release completes the SunRPC thread scheduler work that was begun
  in v6.6. The scheduler can now find an svc thread to wake in constant
  time and without a list walk. Thanks again to Neil Brown for this
  overhaul.

  Lorenzo Bianconi contributed infrastructure for a netlink-based NFSD
  control plane. The long-term plan is to provide the same functionality
  as found in /proc/fs/nfsd, plus some interesting additions, and then
  migrate the NFSD user space utilities to netlink.

  A long series to overhaul NFSD's NFSv4 operation encoding was applied
  in this release. The goals are to bring this family of encoding
  functions in line with the matching NFSv4 decoding functions and with
  the NFSv2 and NFSv3 XDR functions, preparing the way for better memory
  safety and maintainability.

  A further improvement to NFSD's write delegation support was
  contributed by Dai Ngo. This adds a CB_GETATTR callback, enabling the
  server to retrieve cached size and mtime data from clients holding
  write delegations. If the server can retrieve this information, it
  does not have to recall the delegation in some cases.

  The usual panoply of bug fixes and minor improvements round out this
  release. As always I am grateful to all contributors, reviewers, and
  testers"

* tag 'nfsd-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (127 commits)
  svcrdma: Fix tracepoint printk format
  svcrdma: Drop connection after an RDMA Read error
  NFSD: clean up alloc_init_deleg()
  NFSD: Fix frame size warning in svc_export_parse()
  NFSD: Rewrite synopsis of nfsd_percpu_counters_init()
  nfsd: Clean up errors in nfs3proc.c
  nfsd: Clean up errors in nfs4state.c
  NFSD: Clean up errors in stats.c
  NFSD: simplify error paths in nfsd_svc()
  NFSD: Clean up nfsd4_encode_seek()
  NFSD: Clean up nfsd4_encode_offset_status()
  NFSD: Clean up nfsd4_encode_copy_notify()
  NFSD: Clean up nfsd4_encode_copy()
  NFSD: Clean up nfsd4_encode_test_stateid()
  NFSD: Clean up nfsd4_encode_exchange_id()
  NFSD: Clean up nfsd4_do_encode_secinfo()
  NFSD: Clean up nfsd4_encode_access()
  NFSD: Clean up nfsd4_encode_readdir()
  NFSD: Clean up nfsd4_encode_entry4()
  NFSD: Add an nfsd4_encode_nfs_cookie4() helper
  ...

4 files changed, 130 insertions, 1 deletions

diff --git a/tools/net/ynl/Makefile.deps b/tools/net/ynl/Makefile.deps
index f842bc66b967..64d139400db1 100644
--- a/tools/net/ynl/Makefile.deps
+++ b/tools/net/ynl/Makefile.deps
@@ -18,3 +18,4 @@ CFLAGS_devlink:=$(call get_hdr_inc,_LINUX_DEVLINK_H_,devlink.h)
 CFLAGS_ethtool:=$(call get_hdr_inc,_LINUX_ETHTOOL_NETLINK_H_,ethtool_netlink.h)
 CFLAGS_handshake:=$(call get_hdr_inc,_LINUX_HANDSHAKE_H,handshake.h)
 CFLAGS_netdev:=$(call get_hdr_inc,_LINUX_NETDEV_H,netdev.h)
+CFLAGS_nfsd:=$(call get_hdr_inc,_LINUX_NFSD_H,nfsd.h)
diff --git a/tools/net/ynl/generated/Makefile b/tools/net/ynl/generated/Makefile
index f8817d2e56e4..c1935b01902e 100644
--- a/tools/net/ynl/generated/Makefile
+++ b/tools/net/ynl/generated/Makefile
@@ -14,7 +14,7 @@ YNL_GEN_ARG_ethtool:=--user-header linux/ethtool_netlink.h \
 
 TOOL:=../ynl-gen-c.py
 
-GENS:=ethtool devlink handshake fou netdev
+GENS:=ethtool devlink handshake fou netdev nfsd
 SRCS=$(patsubst %,%-user.c,${GENS})
 HDRS=$(patsubst %,%-user.h,${GENS})
 OBJS=$(patsubst %,%-user.o,${GENS})
diff --git a/tools/net/ynl/generated/nfsd-user.c b/tools/net/ynl/generated/nfsd-user.c
new file mode 100644
index 000000000000..fec6828680ce
--- /dev/null
+++ b/tools/net/ynl/generated/nfsd-user.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
+/* Do not edit directly, auto-generated from: */
+/*	Documentation/netlink/specs/nfsd.yaml */
+/* YNL-GEN user source */
+
+#include <stdlib.h>
+#include <string.h>
+#include "nfsd-user.h"
+#include "ynl.h"
+#include <linux/nfsd_netlink.h>
+
+#include <libmnl/libmnl.h>
+#include <linux/genetlink.h>
+
+/* Enums */
+static const char * const nfsd_op_strmap[] = {
+	[NFSD_CMD_RPC_STATUS_GET] = "rpc-status-get",
+};
+
+const char *nfsd_op_str(int op)
+{
+	if (op < 0 || op >= (int)MNL_ARRAY_SIZE(nfsd_op_strmap))
+		return NULL;
+	return nfsd_op_strmap[op];
+}
+
+/* Policies */
+struct ynl_policy_attr nfsd_rpc_status_policy[NFSD_A_RPC_STATUS_MAX + 1] = {
+	[NFSD_A_RPC_STATUS_XID] = { .name = "xid", .type = YNL_PT_U32, },
+	[NFSD_A_RPC_STATUS_FLAGS] = { .name = "flags", .type = YNL_PT_U32, },
+	[NFSD_A_RPC_STATUS_PROG] = { .name = "prog", .type = YNL_PT_U32, },
+	[NFSD_A_RPC_STATUS_VERSION] = { .name = "version", .type = YNL_PT_U8, },
+	[NFSD_A_RPC_STATUS_PROC] = { .name = "proc", .type = YNL_PT_U32, },
+	[NFSD_A_RPC_STATUS_SERVICE_TIME] = { .name = "service_time", .type = YNL_PT_U64, },
+	[NFSD_A_RPC_STATUS_PAD] = { .name = "pad", .type = YNL_PT_IGNORE, },
+	[NFSD_A_RPC_STATUS_SADDR4] = { .name = "saddr4", .type = YNL_PT_U32, },
+	[NFSD_A_RPC_STATUS_DADDR4] = { .name = "daddr4", .type = YNL_PT_U32, },
+	[NFSD_A_RPC_STATUS_SADDR6] = { .name = "saddr6", .type = YNL_PT_BINARY,},
+	[NFSD_A_RPC_STATUS_DADDR6] = { .name = "daddr6", .type = YNL_PT_BINARY,},
+	[NFSD_A_RPC_STATUS_SPORT] = { .name = "sport", .type = YNL_PT_U16, },
+	[NFSD_A_RPC_STATUS_DPORT] = { .name = "dport", .type = YNL_PT_U16, },
+	[NFSD_A_RPC_STATUS_COMPOUND_OPS] = { .name = "compound-ops", .type = YNL_PT_U32, },
+};
+
+struct ynl_policy_nest nfsd_rpc_status_nest = {
+	.max_attr = NFSD_A_RPC_STATUS_MAX,
+	.table = nfsd_rpc_status_policy,
+};
+
+/* Common nested types */
+/* ============== NFSD_CMD_RPC_STATUS_GET ============== */
+/* NFSD_CMD_RPC_STATUS_GET - dump */
+void nfsd_rpc_status_get_list_free(struct nfsd_rpc_status_get_list *rsp)
+{
+	struct nfsd_rpc_status_get_list *next = rsp;
+
+	while ((void *)next != YNL_LIST_END) {
+		rsp = next;
+		next = rsp->next;
+
+		free(rsp->obj.saddr6);
+		free(rsp->obj.daddr6);
+		free(rsp->obj.compound_ops);
+		free(rsp);
+	}
+}
+
+struct nfsd_rpc_status_get_list *nfsd_rpc_status_get_dump(struct ynl_sock *ys)
+{
+	struct ynl_dump_state yds = {};
+	struct nlmsghdr *nlh;
+	int err;
+
+	yds.ys = ys;
+	yds.alloc_sz = sizeof(struct nfsd_rpc_status_get_list);
+	yds.cb = nfsd_rpc_status_get_rsp_parse;
+	yds.rsp_cmd = NFSD_CMD_RPC_STATUS_GET;
+	yds.rsp_policy = &nfsd_rpc_status_nest;
+
+	nlh = ynl_gemsg_start_dump(ys, ys->family_id, NFSD_CMD_RPC_STATUS_GET, 1);
+
+	err = ynl_exec_dump(ys, nlh, &yds);
+	if (err < 0)
+		goto free_list;
+
+	return yds.first;
+
+free_list:
+	nfsd_rpc_status_get_list_free(yds.first);
+	return NULL;
+}
+
+const struct ynl_family ynl_nfsd_family =  {
+	.name		= "nfsd",
+};
diff --git a/tools/net/ynl/generated/nfsd-user.h b/tools/net/ynl/generated/nfsd-user.h
new file mode 100644
index 000000000000..b6b69501031a
--- /dev/null
+++ b/tools/net/ynl/generated/nfsd-user.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/* Do not edit directly, auto-generated from: */
+/*	Documentation/netlink/specs/nfsd.yaml */
+/* YNL-GEN user header */
+
+#ifndef _LINUX_NFSD_GEN_H
+#define _LINUX_NFSD_GEN_H
+
+#include <stdlib.h>
+#include <string.h>
+#include <linux/types.h>
+#include <linux/nfsd_netlink.h>
+
+struct ynl_sock;
+
+extern const struct ynl_family ynl_nfsd_family;
+
+/* Enums */
+const char *nfsd_op_str(int op);
+
+/* Common nested types */
+/* ============== NFSD_CMD_RPC_STATUS_GET ============== */
+/* NFSD_CMD_RPC_STATUS_GET - dump */
+struct nfsd_rpc_status_get_list {
+	struct nfsd_rpc_status_get_list *next;
+	struct nfsd_rpc_status_get_rsp obj __attribute__ ((aligned (8)));
+};
+
+void nfsd_rpc_status_get_list_free(struct nfsd_rpc_status_get_list *rsp);
+
+struct nfsd_rpc_status_get_list *nfsd_rpc_status_get_dump(struct ynl_sock *ys);
+
+#endif /* _LINUX_NFSD_GEN_H */