Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 794 insertions, 0 deletions

diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
new file mode 100644
index 000000000..32784f508
--- /dev/null
+++ b/fs/lockd/svcproc.c
@@ -0,0 +1,794 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/fs/lockd/svcproc.c
+ *
+ * Lockd server procedures. We don't implement the NLM_*_RES 
+ * procedures because we don't use the async procedures.
+ *
+ * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/types.h>
+#include <linux/time.h>
+#include <linux/lockd/lockd.h>
+#include <linux/lockd/share.h>
+#include <linux/sunrpc/svc_xprt.h>
+
+#define NLMDBG_FACILITY		NLMDBG_CLIENT
+
+#ifdef CONFIG_LOCKD_V4
+static __be32
+cast_to_nlm(__be32 status, u32 vers)
+{
+	/* Note: status is assumed to be in network byte order !!! */
+	if (vers != 4){
+		switch (status) {
+		case nlm_granted:
+		case nlm_lck_denied:
+		case nlm_lck_denied_nolocks:
+		case nlm_lck_blocked:
+		case nlm_lck_denied_grace_period:
+		case nlm_drop_reply:
+			break;
+		case nlm4_deadlock:
+			status = nlm_lck_denied;
+			break;
+		default:
+			status = nlm_lck_denied_nolocks;
+		}
+	}
+
+	return (status);
+}
+#define	cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
+#else
+#define cast_status(status) (status)
+#endif
+
+/*
+ * Obtain client and file from arguments
+ */
+static __be32
+nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
+			struct nlm_host **hostp, struct nlm_file **filp)
+{
+	struct nlm_host		*host = NULL;
+	struct nlm_file		*file = NULL;
+	struct nlm_lock		*lock = &argp->lock;
+	int			mode;
+	__be32			error = 0;
+
+	/* nfsd callbacks must have been installed for this procedure */
+	if (!nlmsvc_ops)
+		return nlm_lck_denied_nolocks;
+
+	/* Obtain host handle */
+	if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
+	 || (argp->monitor && nsm_monitor(host) < 0))
+		goto no_locks;
+	*hostp = host;
+
+	/* Obtain file pointer. Not used by FREE_ALL call. */
+	if (filp != NULL) {
+		error = cast_status(nlm_lookup_file(rqstp, &file, lock));
+		if (error != 0)
+			goto no_locks;
+		*filp = file;
+
+		/* Set up the missing parts of the file_lock structure */
+		mode = lock_to_openmode(&lock->fl);
+		lock->fl.fl_flags = FL_POSIX;
+		lock->fl.fl_file  = file->f_file[mode];
+		lock->fl.fl_pid = current->tgid;
+		lock->fl.fl_lmops = &nlmsvc_lock_operations;
+		nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
+		if (!lock->fl.fl_owner) {
+			/* lockowner allocation has failed */
+			nlmsvc_release_host(host);
+			return nlm_lck_denied_nolocks;
+		}
+	}
+
+	return 0;
+
+no_locks:
+	nlmsvc_release_host(host);
+	if (error)
+		return error;
+	return nlm_lck_denied_nolocks;
+}
+
+/*
+ * NULL: Test for presence of service
+ */
+static __be32
+nlmsvc_proc_null(struct svc_rqst *rqstp)
+{
+	dprintk("lockd: NULL          called\n");
+	return rpc_success;
+}
+
+/*
+ * TEST: Check for conflicting lock
+ */
+static __be32
+__nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_host	*host;
+	struct nlm_file	*file;
+	struct nlm_lockowner *test_owner;
+	__be32 rc = rpc_success;
+
+	dprintk("lockd: TEST          called\n");
+	resp->cookie = argp->cookie;
+
+	/* Obtain client and file */
+	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
+		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
+
+	test_owner = argp->lock.fl.fl_owner;
+
+	/* Now check for conflicting locks */
+	resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
+	if (resp->status == nlm_drop_reply)
+		rc = rpc_drop_reply;
+	else
+		dprintk("lockd: TEST          status %d vers %d\n",
+			ntohl(resp->status), rqstp->rq_vers);
+
+	nlmsvc_put_lockowner(test_owner);
+	nlmsvc_release_host(host);
+	nlm_release_file(file);
+	return rc;
+}
+
+static __be32
+nlmsvc_proc_test(struct svc_rqst *rqstp)
+{
+	return __nlmsvc_proc_test(rqstp, rqstp->rq_resp);
+}
+
+static __be32
+__nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_host	*host;
+	struct nlm_file	*file;
+	__be32 rc = rpc_success;
+
+	dprintk("lockd: LOCK          called\n");
+
+	resp->cookie = argp->cookie;
+
+	/* Obtain client and file */
+	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
+		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
+
+#if 0
+	/* If supplied state doesn't match current state, we assume it's
+	 * an old request that time-warped somehow. Any error return would
+	 * do in this case because it's irrelevant anyway.
+	 *
+	 * NB: We don't retrieve the remote host's state yet.
+	 */
+	if (host->h_nsmstate && host->h_nsmstate != argp->state) {
+		resp->status = nlm_lck_denied_nolocks;
+	} else
+#endif
+
+	/* Now try to lock the file */
+	resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
+					       argp->block, &argp->cookie,
+					       argp->reclaim));
+	if (resp->status == nlm_drop_reply)
+		rc = rpc_drop_reply;
+	else
+		dprintk("lockd: LOCK         status %d\n", ntohl(resp->status));
+
+	nlmsvc_release_lockowner(&argp->lock);
+	nlmsvc_release_host(host);
+	nlm_release_file(file);
+	return rc;
+}
+
+static __be32
+nlmsvc_proc_lock(struct svc_rqst *rqstp)
+{
+	return __nlmsvc_proc_lock(rqstp, rqstp->rq_resp);
+}
+
+static __be32
+__nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_host	*host;
+	struct nlm_file	*file;
+	struct net *net = SVC_NET(rqstp);
+
+	dprintk("lockd: CANCEL        called\n");
+
+	resp->cookie = argp->cookie;
+
+	/* Don't accept requests during grace period */
+	if (locks_in_grace(net)) {
+		resp->status = nlm_lck_denied_grace_period;
+		return rpc_success;
+	}
+
+	/* Obtain client and file */
+	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
+		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
+
+	/* Try to cancel request. */
+	resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));
+
+	dprintk("lockd: CANCEL        status %d\n", ntohl(resp->status));
+	nlmsvc_release_lockowner(&argp->lock);
+	nlmsvc_release_host(host);
+	nlm_release_file(file);
+	return rpc_success;
+}
+
+static __be32
+nlmsvc_proc_cancel(struct svc_rqst *rqstp)
+{
+	return __nlmsvc_proc_cancel(rqstp, rqstp->rq_resp);
+}
+
+/*
+ * UNLOCK: release a lock
+ */
+static __be32
+__nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_host	*host;
+	struct nlm_file	*file;
+	struct net *net = SVC_NET(rqstp);
+
+	dprintk("lockd: UNLOCK        called\n");
+
+	resp->cookie = argp->cookie;
+
+	/* Don't accept new lock requests during grace period */
+	if (locks_in_grace(net)) {
+		resp->status = nlm_lck_denied_grace_period;
+		return rpc_success;
+	}
+
+	/* Obtain client and file */
+	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
+		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
+
+	/* Now try to remove the lock */
+	resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));
+
+	dprintk("lockd: UNLOCK        status %d\n", ntohl(resp->status));
+	nlmsvc_release_lockowner(&argp->lock);
+	nlmsvc_release_host(host);
+	nlm_release_file(file);
+	return rpc_success;
+}
+
+static __be32
+nlmsvc_proc_unlock(struct svc_rqst *rqstp)
+{
+	return __nlmsvc_proc_unlock(rqstp, rqstp->rq_resp);
+}
+
+/*
+ * GRANTED: A server calls us to tell that a process' lock request
+ * was granted
+ */
+static __be32
+__nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+
+	resp->cookie = argp->cookie;
+
+	dprintk("lockd: GRANTED       called\n");
+	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
+	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
+	return rpc_success;
+}
+
+static __be32
+nlmsvc_proc_granted(struct svc_rqst *rqstp)
+{
+	return __nlmsvc_proc_granted(rqstp, rqstp->rq_resp);
+}
+
+/*
+ * This is the generic lockd callback for async RPC calls
+ */
+static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
+{
+}
+
+void nlmsvc_release_call(struct nlm_rqst *call)
+{
+	if (!refcount_dec_and_test(&call->a_count))
+		return;
+	nlmsvc_release_host(call->a_host);
+	kfree(call);
+}
+
+static void nlmsvc_callback_release(void *data)
+{
+	nlmsvc_release_call(data);
+}
+
+static const struct rpc_call_ops nlmsvc_callback_ops = {
+	.rpc_call_done = nlmsvc_callback_exit,
+	.rpc_release = nlmsvc_callback_release,
+};
+
+/*
+ * `Async' versions of the above service routines. They aren't really,
+ * because we send the callback before the reply proper. I hope this
+ * doesn't break any clients.
+ */
+static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc,
+		__be32 (*func)(struct svc_rqst *, struct nlm_res *))
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_host	*host;
+	struct nlm_rqst	*call;
+	__be32 stat;
+
+	host = nlmsvc_lookup_host(rqstp,
+				  argp->lock.caller,
+				  argp->lock.len);
+	if (host == NULL)
+		return rpc_system_err;
+
+	call = nlm_alloc_call(host);
+	nlmsvc_release_host(host);
+	if (call == NULL)
+		return rpc_system_err;
+
+	stat = func(rqstp, &call->a_res);
+	if (stat != 0) {
+		nlmsvc_release_call(call);
+		return stat;
+	}
+
+	call->a_flags = RPC_TASK_ASYNC;
+	if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
+		return rpc_system_err;
+	return rpc_success;
+}
+
+static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp)
+{
+	dprintk("lockd: TEST_MSG      called\n");
+	return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, __nlmsvc_proc_test);
+}
+
+static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp)
+{
+	dprintk("lockd: LOCK_MSG      called\n");
+	return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, __nlmsvc_proc_lock);
+}
+
+static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp)
+{
+	dprintk("lockd: CANCEL_MSG    called\n");
+	return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, __nlmsvc_proc_cancel);
+}
+
+static __be32
+nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp)
+{
+	dprintk("lockd: UNLOCK_MSG    called\n");
+	return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlmsvc_proc_unlock);
+}
+
+static __be32
+nlmsvc_proc_granted_msg(struct svc_rqst *rqstp)
+{
+	dprintk("lockd: GRANTED_MSG   called\n");
+	return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, __nlmsvc_proc_granted);
+}
+
+/*
+ * SHARE: create a DOS share or alter existing share.
+ */
+static __be32
+nlmsvc_proc_share(struct svc_rqst *rqstp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_res *resp = rqstp->rq_resp;
+	struct nlm_host	*host;
+	struct nlm_file	*file;
+
+	dprintk("lockd: SHARE         called\n");
+
+	resp->cookie = argp->cookie;
+
+	/* Don't accept new lock requests during grace period */
+	if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
+		resp->status = nlm_lck_denied_grace_period;
+		return rpc_success;
+	}
+
+	/* Obtain client and file */
+	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
+		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
+
+	/* Now try to create the share */
+	resp->status = cast_status(nlmsvc_share_file(host, file, argp));
+
+	dprintk("lockd: SHARE         status %d\n", ntohl(resp->status));
+	nlmsvc_release_lockowner(&argp->lock);
+	nlmsvc_release_host(host);
+	nlm_release_file(file);
+	return rpc_success;
+}
+
+/*
+ * UNSHARE: Release a DOS share.
+ */
+static __be32
+nlmsvc_proc_unshare(struct svc_rqst *rqstp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_res *resp = rqstp->rq_resp;
+	struct nlm_host	*host;
+	struct nlm_file	*file;
+
+	dprintk("lockd: UNSHARE       called\n");
+
+	resp->cookie = argp->cookie;
+
+	/* Don't accept requests during grace period */
+	if (locks_in_grace(SVC_NET(rqstp))) {
+		resp->status = nlm_lck_denied_grace_period;
+		return rpc_success;
+	}
+
+	/* Obtain client and file */
+	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
+		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
+
+	/* Now try to unshare the file */
+	resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
+
+	dprintk("lockd: UNSHARE       status %d\n", ntohl(resp->status));
+	nlmsvc_release_lockowner(&argp->lock);
+	nlmsvc_release_host(host);
+	nlm_release_file(file);
+	return rpc_success;
+}
+
+/*
+ * NM_LOCK: Create an unmonitored lock
+ */
+static __be32
+nlmsvc_proc_nm_lock(struct svc_rqst *rqstp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+
+	dprintk("lockd: NM_LOCK       called\n");
+
+	argp->monitor = 0;		/* just clean the monitor flag */
+	return nlmsvc_proc_lock(rqstp);
+}
+
+/*
+ * FREE_ALL: Release all locks and shares held by client
+ */
+static __be32
+nlmsvc_proc_free_all(struct svc_rqst *rqstp)
+{
+	struct nlm_args *argp = rqstp->rq_argp;
+	struct nlm_host	*host;
+
+	/* Obtain client */
+	if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
+		return rpc_success;
+
+	nlmsvc_free_host_resources(host);
+	nlmsvc_release_host(host);
+	return rpc_success;
+}
+
+/*
+ * SM_NOTIFY: private callback from statd (not part of official NLM proto)
+ */
+static __be32
+nlmsvc_proc_sm_notify(struct svc_rqst *rqstp)
+{
+	struct nlm_reboot *argp = rqstp->rq_argp;
+
+	dprintk("lockd: SM_NOTIFY     called\n");
+
+	if (!nlm_privileged_requester(rqstp)) {
+		char buf[RPC_MAX_ADDRBUFLEN];
+		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+				svc_print_addr(rqstp, buf, sizeof(buf)));
+		return rpc_system_err;
+	}
+
+	nlm_host_rebooted(SVC_NET(rqstp), argp);
+	return rpc_success;
+}
+
+/*
+ * client sent a GRANTED_RES, let's remove the associated block
+ */
+static __be32
+nlmsvc_proc_granted_res(struct svc_rqst *rqstp)
+{
+	struct nlm_res *argp = rqstp->rq_argp;
+
+	if (!nlmsvc_ops)
+		return rpc_success;
+
+	dprintk("lockd: GRANTED_RES   called\n");
+
+	nlmsvc_grant_reply(&argp->cookie, argp->status);
+	return rpc_success;
+}
+
+static __be32
+nlmsvc_proc_unused(struct svc_rqst *rqstp)
+{
+	return rpc_proc_unavail;
+}
+
+/*
+ * NLM Server procedures.
+ */
+
+struct nlm_void			{ int dummy; };
+
+#define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */
+#define	St	1				/* status */
+#define	No	(1+1024/4)			/* Net Obj */
+#define	Rg	2				/* range - offset + size */
+
+const struct svc_procedure nlmsvc_procedures[24] = {
+	[NLMPROC_NULL] = {
+		.pc_func = nlmsvc_proc_null,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_void),
+		.pc_argzero = sizeof(struct nlm_void),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "NULL",
+	},
+	[NLMPROC_TEST] = {
+		.pc_func = nlmsvc_proc_test,
+		.pc_decode = nlmsvc_decode_testargs,
+		.pc_encode = nlmsvc_encode_testres,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St+2+No+Rg,
+		.pc_name = "TEST",
+	},
+	[NLMPROC_LOCK] = {
+		.pc_func = nlmsvc_proc_lock,
+		.pc_decode = nlmsvc_decode_lockargs,
+		.pc_encode = nlmsvc_encode_res,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St,
+		.pc_name = "LOCK",
+	},
+	[NLMPROC_CANCEL] = {
+		.pc_func = nlmsvc_proc_cancel,
+		.pc_decode = nlmsvc_decode_cancargs,
+		.pc_encode = nlmsvc_encode_res,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St,
+		.pc_name = "CANCEL",
+	},
+	[NLMPROC_UNLOCK] = {
+		.pc_func = nlmsvc_proc_unlock,
+		.pc_decode = nlmsvc_decode_unlockargs,
+		.pc_encode = nlmsvc_encode_res,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St,
+		.pc_name = "UNLOCK",
+	},
+	[NLMPROC_GRANTED] = {
+		.pc_func = nlmsvc_proc_granted,
+		.pc_decode = nlmsvc_decode_testargs,
+		.pc_encode = nlmsvc_encode_res,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St,
+		.pc_name = "GRANTED",
+	},
+	[NLMPROC_TEST_MSG] = {
+		.pc_func = nlmsvc_proc_test_msg,
+		.pc_decode = nlmsvc_decode_testargs,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "TEST_MSG",
+	},
+	[NLMPROC_LOCK_MSG] = {
+		.pc_func = nlmsvc_proc_lock_msg,
+		.pc_decode = nlmsvc_decode_lockargs,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "LOCK_MSG",
+	},
+	[NLMPROC_CANCEL_MSG] = {
+		.pc_func = nlmsvc_proc_cancel_msg,
+		.pc_decode = nlmsvc_decode_cancargs,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "CANCEL_MSG",
+	},
+	[NLMPROC_UNLOCK_MSG] = {
+		.pc_func = nlmsvc_proc_unlock_msg,
+		.pc_decode = nlmsvc_decode_unlockargs,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "UNLOCK_MSG",
+	},
+	[NLMPROC_GRANTED_MSG] = {
+		.pc_func = nlmsvc_proc_granted_msg,
+		.pc_decode = nlmsvc_decode_testargs,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "GRANTED_MSG",
+	},
+	[NLMPROC_TEST_RES] = {
+		.pc_func = nlmsvc_proc_null,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_res),
+		.pc_argzero = sizeof(struct nlm_res),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "TEST_RES",
+	},
+	[NLMPROC_LOCK_RES] = {
+		.pc_func = nlmsvc_proc_null,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_res),
+		.pc_argzero = sizeof(struct nlm_res),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "LOCK_RES",
+	},
+	[NLMPROC_CANCEL_RES] = {
+		.pc_func = nlmsvc_proc_null,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_res),
+		.pc_argzero = sizeof(struct nlm_res),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "CANCEL_RES",
+	},
+	[NLMPROC_UNLOCK_RES] = {
+		.pc_func = nlmsvc_proc_null,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_res),
+		.pc_argzero = sizeof(struct nlm_res),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "UNLOCK_RES",
+	},
+	[NLMPROC_GRANTED_RES] = {
+		.pc_func = nlmsvc_proc_granted_res,
+		.pc_decode = nlmsvc_decode_res,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_res),
+		.pc_argzero = sizeof(struct nlm_res),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "GRANTED_RES",
+	},
+	[NLMPROC_NSM_NOTIFY] = {
+		.pc_func = nlmsvc_proc_sm_notify,
+		.pc_decode = nlmsvc_decode_reboot,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_reboot),
+		.pc_argzero = sizeof(struct nlm_reboot),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "SM_NOTIFY",
+	},
+	[17] = {
+		.pc_func = nlmsvc_proc_unused,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_void),
+		.pc_argzero = sizeof(struct nlm_void),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "UNUSED",
+	},
+	[18] = {
+		.pc_func = nlmsvc_proc_unused,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_void),
+		.pc_argzero = sizeof(struct nlm_void),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "UNUSED",
+	},
+	[19] = {
+		.pc_func = nlmsvc_proc_unused,
+		.pc_decode = nlmsvc_decode_void,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_void),
+		.pc_argzero = sizeof(struct nlm_void),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = St,
+		.pc_name = "UNUSED",
+	},
+	[NLMPROC_SHARE] = {
+		.pc_func = nlmsvc_proc_share,
+		.pc_decode = nlmsvc_decode_shareargs,
+		.pc_encode = nlmsvc_encode_shareres,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St+1,
+		.pc_name = "SHARE",
+	},
+	[NLMPROC_UNSHARE] = {
+		.pc_func = nlmsvc_proc_unshare,
+		.pc_decode = nlmsvc_decode_shareargs,
+		.pc_encode = nlmsvc_encode_shareres,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St+1,
+		.pc_name = "UNSHARE",
+	},
+	[NLMPROC_NM_LOCK] = {
+		.pc_func = nlmsvc_proc_nm_lock,
+		.pc_decode = nlmsvc_decode_lockargs,
+		.pc_encode = nlmsvc_encode_res,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_res),
+		.pc_xdrressize = Ck+St,
+		.pc_name = "NM_LOCK",
+	},
+	[NLMPROC_FREE_ALL] = {
+		.pc_func = nlmsvc_proc_free_all,
+		.pc_decode = nlmsvc_decode_notify,
+		.pc_encode = nlmsvc_encode_void,
+		.pc_argsize = sizeof(struct nlm_args),
+		.pc_argzero = sizeof(struct nlm_args),
+		.pc_ressize = sizeof(struct nlm_void),
+		.pc_xdrressize = 0,
+		.pc_name = "FREE_ALL",
+	},
+};