Merge tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO updates from Greg KH:
 "Here is the big staging and IIO driver update for 4.18-rc1.

  It was delayed as I wanted to make sure the final driver deletions did
  not cause any major merge issues, and all now looks good.

  There are a lot of patches here, just over 1000. The diffstat summary
  shows the major changes here:

	1007 files changed, 16828 insertions(+), 227770 deletions(-)

  Because of this, we might be close to shrinking the overall kernel
  source code size for two releases in a row.

  There was loads of work in this release cycle, primarily:

   - tons of ks7010 driver cleanups

   - lots of mt7621 driver fixes and cleanups

   - most driver cleanups

   - wilc1000 fixes and cleanups

   - lots and lots of IIO driver cleanups and new additions

   - debugfs cleanups for all staging drivers

   - lots of other staging driver cleanups and fixes, the shortlog has
     the full details.

  but the big user-visable things here are the removal of 3 chunks of
  code:

   - ncpfs and ipx were removed on schedule, no one has cared about this
     code since it moved to staging last year, and if it needs to come
     back, it can be reverted.

   - lustre file system is removed.

     I've ranted at the lustre developers about once a year for the past
     5 years, with no real forward progress at all to clean things up
     and get the code into the "real" part of the kernel.

     Given that the lustre developers continue to work on an external
     tree and try to port those changes to the in-kernel tree every once
     in a while, this whole thing really really is not working out at
     all. So I'm deleting it so that the developers can spend the time
     working in their out-of-tree location and get things cleaned up
     properly to get merged into the tree correctly at a later date.

  Because of these file removals, you will have merge issues on some of
  these files (2 in the ipx code, 1 in the ncpfs code, and 1 in the
  atomisp driver). Just delete those files, it's a simple merge :)

  All of this has been in linux-next for a while with no reported
  problems"

* tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1011 commits)
  staging: ipx: delete it from the tree
  ncpfs: remove uapi .h files
  ncpfs: remove Documentation
  ncpfs: remove compat functionality
  staging: ncpfs: delete it
  staging: lustre: delete the filesystem from the tree.
  staging: vc04_services: no need to save the log debufs dentries
  staging: vc04_services: vchiq_debugfs_log_entry can be a void *
  staging: vc04_services: remove struct vchiq_debugfs_info
  staging: vc04_services: move client dbg directory into static variable
  staging: vc04_services: remove odd vchiq_debugfs_top() wrapper
  staging: vc04_services: no need to check debugfs return values
  staging: mt7621-gpio: reorder includes alphabetically
  staging: mt7621-gpio: change gc_map to don't use pointers
  staging: mt7621-gpio: use GPIOF_DIR_OUT and GPIOF_DIR_IN macros instead of custom values
  staging: mt7621-gpio: change 'to_mediatek_gpio' to make just a one line return
  staging: mt7621-gpio: dt-bindings: update documentation for #interrupt-cells property
  staging: mt7621-gpio: update #interrupt-cells for the gpio node
  staging: mt7621-gpio: dt-bindings: complete documentation for the gpio
  staging: mt7621-dts: add missing properties to gpio node
  ...

1 files changed, 0 insertions, 533 deletions

diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib.c
deleted file mode 100644
index 7941cfa526bc..000000000000
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd_lib.c
+++ /dev/null
@@ -1,533 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#include "socklnd.h"
-
-int
-ksocknal_lib_get_conn_addrs(struct ksock_conn *conn)
-{
-	int rc = lnet_sock_getaddr(conn->ksnc_sock, 1, &conn->ksnc_ipaddr,
-				   &conn->ksnc_port);
-
-	/* Didn't need the {get,put}connsock dance to deref ksnc_sock... */
-	LASSERT(!conn->ksnc_closing);
-
-	if (rc) {
-		CERROR("Error %d getting sock peer IP\n", rc);
-		return rc;
-	}
-
-	rc = lnet_sock_getaddr(conn->ksnc_sock, 0, &conn->ksnc_myipaddr, NULL);
-	if (rc) {
-		CERROR("Error %d getting sock local IP\n", rc);
-		return rc;
-	}
-
-	return 0;
-}
-
-int
-ksocknal_lib_zc_capable(struct ksock_conn *conn)
-{
-	int caps = conn->ksnc_sock->sk->sk_route_caps;
-
-	if (conn->ksnc_proto == &ksocknal_protocol_v1x)
-		return 0;
-
-	/*
-	 * ZC if the socket supports scatter/gather and doesn't need software
-	 * checksums
-	 */
-	return ((caps & NETIF_F_SG) && (caps & NETIF_F_CSUM_MASK));
-}
-
-int
-ksocknal_lib_send_iov(struct ksock_conn *conn, struct ksock_tx *tx)
-{
-	struct msghdr msg = {.msg_flags = MSG_DONTWAIT};
-	struct socket *sock = conn->ksnc_sock;
-	int nob, i;
-
-	if (*ksocknal_tunables.ksnd_enable_csum	&& /* checksum enabled */
-	    conn->ksnc_proto == &ksocknal_protocol_v2x && /* V2.x connection  */
-	    tx->tx_nob == tx->tx_resid		 && /* frist sending    */
-	    !tx->tx_msg.ksm_csum)		     /* not checksummed  */
-		ksocknal_lib_csum_tx(tx);
-
-	for (nob = i = 0; i < tx->tx_niov; i++)
-		nob += tx->tx_iov[i].iov_len;
-
-	if (!list_empty(&conn->ksnc_tx_queue) ||
-	    nob < tx->tx_resid)
-		msg.msg_flags |= MSG_MORE;
-
-	iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC,
-		      tx->tx_iov, tx->tx_niov, nob);
-	return sock_sendmsg(sock, &msg);
-}
-
-int
-ksocknal_lib_send_kiov(struct ksock_conn *conn, struct ksock_tx *tx)
-{
-	struct socket *sock = conn->ksnc_sock;
-	struct bio_vec *kiov = tx->tx_kiov;
-	int rc;
-	int nob;
-
-	/* Not NOOP message */
-	LASSERT(tx->tx_lnetmsg);
-
-	if (tx->tx_msg.ksm_zc_cookies[0]) {
-		/* Zero copy is enabled */
-		struct sock *sk = sock->sk;
-		struct page *page = kiov->bv_page;
-		int offset = kiov->bv_offset;
-		int fragsize = kiov->bv_len;
-		int msgflg = MSG_DONTWAIT;
-
-		CDEBUG(D_NET, "page %p + offset %x for %d\n",
-		       page, offset, kiov->bv_len);
-
-		if (!list_empty(&conn->ksnc_tx_queue) ||
-		    fragsize < tx->tx_resid)
-			msgflg |= MSG_MORE;
-
-		if (sk->sk_prot->sendpage) {
-			rc = sk->sk_prot->sendpage(sk, page,
-						   offset, fragsize, msgflg);
-		} else {
-			rc = tcp_sendpage(sk, page, offset, fragsize, msgflg);
-		}
-	} else {
-		struct msghdr msg = {.msg_flags = MSG_DONTWAIT};
-		int i;
-
-		for (nob = i = 0; i < tx->tx_nkiov; i++)
-			nob += kiov[i].bv_len;
-
-		if (!list_empty(&conn->ksnc_tx_queue) ||
-		    nob < tx->tx_resid)
-			msg.msg_flags |= MSG_MORE;
-
-		iov_iter_bvec(&msg.msg_iter, WRITE | ITER_BVEC,
-			      kiov, tx->tx_nkiov, nob);
-		rc = sock_sendmsg(sock, &msg);
-	}
-	return rc;
-}
-
-void
-ksocknal_lib_eager_ack(struct ksock_conn *conn)
-{
-	int opt = 1;
-	struct socket *sock = conn->ksnc_sock;
-
-	/*
-	 * Remind the socket to ACK eagerly.  If I don't, the socket might
-	 * think I'm about to send something it could piggy-back the ACK
-	 * on, introducing delay in completing zero-copy sends in my
-	 * peer.
-	 */
-	kernel_setsockopt(sock, SOL_TCP, TCP_QUICKACK, (char *)&opt,
-			  sizeof(opt));
-}
-
-static int lustre_csum(struct kvec *v, void *context)
-{
-	struct ksock_conn *conn = context;
-	conn->ksnc_rx_csum = crc32_le(conn->ksnc_rx_csum,
-				      v->iov_base, v->iov_len);
-	return 0;
-}
-
-int
-ksocknal_lib_recv(struct ksock_conn *conn)
-{
-	struct msghdr msg = { .msg_iter = conn->ksnc_rx_to };
-	__u32 saved_csum;
-	int rc;
-
-	rc = sock_recvmsg(conn->ksnc_sock, &msg, MSG_DONTWAIT);
-	if (rc <= 0)
-		return rc;
-
-	saved_csum = conn->ksnc_msg.ksm_csum;
-	if (!saved_csum)
-		return rc;
-
-	/* header is included only in V2 - V3 checksums only the bulk data */
-	if (!(conn->ksnc_rx_to.type & ITER_BVEC) &&
-	     conn->ksnc_proto != &ksocknal_protocol_v2x)
-		return rc;
-
-	/* accumulate checksum */
-	conn->ksnc_msg.ksm_csum = 0;
-	iov_iter_for_each_range(&conn->ksnc_rx_to, rc, lustre_csum, conn);
-	conn->ksnc_msg.ksm_csum = saved_csum;
-
-	return rc;
-}
-
-void
-ksocknal_lib_csum_tx(struct ksock_tx *tx)
-{
-	int i;
-	__u32 csum;
-	void *base;
-
-	LASSERT(tx->tx_iov[0].iov_base == &tx->tx_msg);
-	LASSERT(tx->tx_conn);
-	LASSERT(tx->tx_conn->ksnc_proto == &ksocknal_protocol_v2x);
-
-	tx->tx_msg.ksm_csum = 0;
-
-	csum = crc32_le(~0, tx->tx_iov[0].iov_base,
-			tx->tx_iov[0].iov_len);
-
-	if (tx->tx_kiov) {
-		for (i = 0; i < tx->tx_nkiov; i++) {
-			base = kmap(tx->tx_kiov[i].bv_page) +
-			       tx->tx_kiov[i].bv_offset;
-
-			csum = crc32_le(csum, base, tx->tx_kiov[i].bv_len);
-
-			kunmap(tx->tx_kiov[i].bv_page);
-		}
-	} else {
-		for (i = 1; i < tx->tx_niov; i++)
-			csum = crc32_le(csum, tx->tx_iov[i].iov_base,
-					tx->tx_iov[i].iov_len);
-	}
-
-	if (*ksocknal_tunables.ksnd_inject_csum_error) {
-		csum++;
-		*ksocknal_tunables.ksnd_inject_csum_error = 0;
-	}
-
-	tx->tx_msg.ksm_csum = csum;
-}
-
-int
-ksocknal_lib_get_conn_tunables(struct ksock_conn *conn, int *txmem,
-			       int *rxmem, int *nagle)
-{
-	struct socket *sock = conn->ksnc_sock;
-	int len;
-	int rc;
-
-	rc = ksocknal_connsock_addref(conn);
-	if (rc) {
-		LASSERT(conn->ksnc_closing);
-		*txmem = *rxmem = *nagle = 0;
-		return -ESHUTDOWN;
-	}
-
-	rc = lnet_sock_getbuf(sock, txmem, rxmem);
-	if (!rc) {
-		len = sizeof(*nagle);
-		rc = kernel_getsockopt(sock, SOL_TCP, TCP_NODELAY,
-				       (char *)nagle, &len);
-	}
-
-	ksocknal_connsock_decref(conn);
-
-	if (!rc)
-		*nagle = !*nagle;
-	else
-		*txmem = *rxmem = *nagle = 0;
-
-	return rc;
-}
-
-int
-ksocknal_lib_setup_sock(struct socket *sock)
-{
-	int rc;
-	int option;
-	int keep_idle;
-	int keep_intvl;
-	int keep_count;
-	int do_keepalive;
-	struct linger linger;
-
-	sock->sk->sk_allocation = GFP_NOFS;
-
-	/*
-	 * Ensure this socket aborts active sends immediately when we close
-	 * it.
-	 */
-	linger.l_onoff = 0;
-	linger.l_linger = 0;
-
-	rc = kernel_setsockopt(sock, SOL_SOCKET, SO_LINGER, (char *)&linger,
-			       sizeof(linger));
-	if (rc) {
-		CERROR("Can't set SO_LINGER: %d\n", rc);
-		return rc;
-	}
-
-	option = -1;
-	rc = kernel_setsockopt(sock, SOL_TCP, TCP_LINGER2, (char *)&option,
-			       sizeof(option));
-	if (rc) {
-		CERROR("Can't set SO_LINGER2: %d\n", rc);
-		return rc;
-	}
-
-	if (!*ksocknal_tunables.ksnd_nagle) {
-		option = 1;
-
-		rc = kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY,
-				       (char *)&option, sizeof(option));
-		if (rc) {
-			CERROR("Can't disable nagle: %d\n", rc);
-			return rc;
-		}
-	}
-
-	rc = lnet_sock_setbuf(sock, *ksocknal_tunables.ksnd_tx_buffer_size,
-			      *ksocknal_tunables.ksnd_rx_buffer_size);
-	if (rc) {
-		CERROR("Can't set buffer tx %d, rx %d buffers: %d\n",
-		       *ksocknal_tunables.ksnd_tx_buffer_size,
-		       *ksocknal_tunables.ksnd_rx_buffer_size, rc);
-		return rc;
-	}
-
-/* TCP_BACKOFF_* sockopt tunables unsupported in stock kernels */
-
-	/* snapshot tunables */
-	keep_idle  = *ksocknal_tunables.ksnd_keepalive_idle;
-	keep_count = *ksocknal_tunables.ksnd_keepalive_count;
-	keep_intvl = *ksocknal_tunables.ksnd_keepalive_intvl;
-
-	do_keepalive = (keep_idle > 0 && keep_count > 0 && keep_intvl > 0);
-
-	option = (do_keepalive ? 1 : 0);
-	rc = kernel_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&option,
-			       sizeof(option));
-	if (rc) {
-		CERROR("Can't set SO_KEEPALIVE: %d\n", rc);
-		return rc;
-	}
-
-	if (!do_keepalive)
-		return 0;
-
-	rc = kernel_setsockopt(sock, SOL_TCP, TCP_KEEPIDLE, (char *)&keep_idle,
-			       sizeof(keep_idle));
-	if (rc) {
-		CERROR("Can't set TCP_KEEPIDLE: %d\n", rc);
-		return rc;
-	}
-
-	rc = kernel_setsockopt(sock, SOL_TCP, TCP_KEEPINTVL,
-			       (char *)&keep_intvl, sizeof(keep_intvl));
-	if (rc) {
-		CERROR("Can't set TCP_KEEPINTVL: %d\n", rc);
-		return rc;
-	}
-
-	rc = kernel_setsockopt(sock, SOL_TCP, TCP_KEEPCNT, (char *)&keep_count,
-			       sizeof(keep_count));
-	if (rc) {
-		CERROR("Can't set TCP_KEEPCNT: %d\n", rc);
-		return rc;
-	}
-
-	return 0;
-}
-
-void
-ksocknal_lib_push_conn(struct ksock_conn *conn)
-{
-	struct sock *sk;
-	struct tcp_sock *tp;
-	int nonagle;
-	int val = 1;
-	int rc;
-
-	rc = ksocknal_connsock_addref(conn);
-	if (rc)			    /* being shut down */
-		return;
-
-	sk = conn->ksnc_sock->sk;
-	tp = tcp_sk(sk);
-
-	lock_sock(sk);
-	nonagle = tp->nonagle;
-	tp->nonagle = 1;
-	release_sock(sk);
-
-	rc = kernel_setsockopt(conn->ksnc_sock, SOL_TCP, TCP_NODELAY,
-			       (char *)&val, sizeof(val));
-	LASSERT(!rc);
-
-	lock_sock(sk);
-	tp->nonagle = nonagle;
-	release_sock(sk);
-
-	ksocknal_connsock_decref(conn);
-}
-
-/*
- * socket call back in Linux
- */
-static void
-ksocknal_data_ready(struct sock *sk)
-{
-	struct ksock_conn *conn;
-
-	/* interleave correctly with closing sockets... */
-	LASSERT(!in_irq());
-	read_lock(&ksocknal_data.ksnd_global_lock);
-
-	conn = sk->sk_user_data;
-	if (!conn) {	     /* raced with ksocknal_terminate_conn */
-		LASSERT(sk->sk_data_ready != &ksocknal_data_ready);
-		sk->sk_data_ready(sk);
-	} else {
-		ksocknal_read_callback(conn);
-	}
-
-	read_unlock(&ksocknal_data.ksnd_global_lock);
-}
-
-static void
-ksocknal_write_space(struct sock *sk)
-{
-	struct ksock_conn *conn;
-	int wspace;
-	int min_wpace;
-
-	/* interleave correctly with closing sockets... */
-	LASSERT(!in_irq());
-	read_lock(&ksocknal_data.ksnd_global_lock);
-
-	conn = sk->sk_user_data;
-	wspace = sk_stream_wspace(sk);
-	min_wpace = sk_stream_min_wspace(sk);
-
-	CDEBUG(D_NET, "sk %p wspace %d low water %d conn %p%s%s%s\n",
-	       sk, wspace, min_wpace, conn,
-	       !conn ? "" : (conn->ksnc_tx_ready ?
-				      " ready" : " blocked"),
-	       !conn ? "" : (conn->ksnc_tx_scheduled ?
-				      " scheduled" : " idle"),
-	       !conn ? "" : (list_empty(&conn->ksnc_tx_queue) ?
-				      " empty" : " queued"));
-
-	if (!conn) {	     /* raced with ksocknal_terminate_conn */
-		LASSERT(sk->sk_write_space != &ksocknal_write_space);
-		sk->sk_write_space(sk);
-
-		read_unlock(&ksocknal_data.ksnd_global_lock);
-		return;
-	}
-
-	if (wspace >= min_wpace) {	      /* got enough space */
-		ksocknal_write_callback(conn);
-
-		/*
-		 * Clear SOCK_NOSPACE _after_ ksocknal_write_callback so the
-		 * ENOMEM check in ksocknal_transmit is race-free (think about
-		 * it).
-		 */
-		clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
-	}
-
-	read_unlock(&ksocknal_data.ksnd_global_lock);
-}
-
-void
-ksocknal_lib_save_callback(struct socket *sock, struct ksock_conn *conn)
-{
-	conn->ksnc_saved_data_ready = sock->sk->sk_data_ready;
-	conn->ksnc_saved_write_space = sock->sk->sk_write_space;
-}
-
-void
-ksocknal_lib_set_callback(struct socket *sock,  struct ksock_conn *conn)
-{
-	sock->sk->sk_user_data = conn;
-	sock->sk->sk_data_ready = ksocknal_data_ready;
-	sock->sk->sk_write_space = ksocknal_write_space;
-}
-
-void
-ksocknal_lib_reset_callback(struct socket *sock, struct ksock_conn *conn)
-{
-	/*
-	 * Remove conn's network callbacks.
-	 * NB I _have_ to restore the callback, rather than storing a noop,
-	 * since the socket could survive past this module being unloaded!!
-	 */
-	sock->sk->sk_data_ready = conn->ksnc_saved_data_ready;
-	sock->sk->sk_write_space = conn->ksnc_saved_write_space;
-
-	/*
-	 * A callback could be in progress already; they hold a read lock
-	 * on ksnd_global_lock (to serialise with me) and NOOP if
-	 * sk_user_data is NULL.
-	 */
-	sock->sk->sk_user_data = NULL;
-}
-
-int
-ksocknal_lib_memory_pressure(struct ksock_conn *conn)
-{
-	int rc = 0;
-	struct ksock_sched *sched;
-
-	sched = conn->ksnc_scheduler;
-	spin_lock_bh(&sched->kss_lock);
-
-	if (!test_bit(SOCK_NOSPACE, &conn->ksnc_sock->flags) &&
-	    !conn->ksnc_tx_ready) {
-		/*
-		 * SOCK_NOSPACE is set when the socket fills
-		 * and cleared in the write_space callback
-		 * (which also sets ksnc_tx_ready).  If
-		 * SOCK_NOSPACE and ksnc_tx_ready are BOTH
-		 * zero, I didn't fill the socket and
-		 * write_space won't reschedule me, so I
-		 * return -ENOMEM to get my caller to retry
-		 * after a timeout
-		 */
-		rc = -ENOMEM;
-	}
-
-	spin_unlock_bh(&sched->kss_lock);
-
-	return rc;
-}