Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from Davic Miller:

 1) Support busy polling generically, for all NAPI drivers.  From Eric
    Dumazet.

 2) Add byte/packet counter support to nft_ct, from Floriani Westphal.

 3) Add RSS/XPS support to mvneta driver, from Gregory Clement.

 4) Implement IPV6_HDRINCL socket option for raw sockets, from Hannes
    Frederic Sowa.

 5) Add support for T6 adapter to cxgb4 driver, from Hariprasad Shenai.

 6) Add support for VLAN device bridging to mlxsw switch driver, from
    Ido Schimmel.

 7) Add driver for Netronome NFP4000/NFP6000, from Jakub Kicinski.

 8) Provide hwmon interface to mlxsw switch driver, from Jiri Pirko.

 9) Reorganize wireless drivers into per-vendor directories just like we
    do for ethernet drivers.  From Kalle Valo.

10) Provide a way for administrators "destroy" connected sockets via the
    SOCK_DESTROY socket netlink diag operation.  From Lorenzo Colitti.

11) Add support to add/remove multicast routes via netlink, from Nikolay
    Aleksandrov.

12) Make TCP keepalive settings per-namespace, from Nikolay Borisov.

13) Add forwarding and packet duplication facilities to nf_tables, from
    Pablo Neira Ayuso.

14) Dead route support in MPLS, from Roopa Prabhu.

15) TSO support for thunderx chips, from Sunil Goutham.

16) Add driver for IBM's System i/p VNIC protocol, from Thomas Falcon.

17) Rationalize, consolidate, and more completely document the checksum
    offloading facilities in the networking stack.  From Tom Herbert.

18) Support aborting an ongoing scan in mac80211/cfg80211, from
    Vidyullatha Kanchanapally.

19) Use per-bucket spinlock for bpf hash facility, from Tom Leiming.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1375 commits)
  net: bnxt: always return values from _bnxt_get_max_rings
  net: bpf: reject invalid shifts
  phonet: properly unshare skbs in phonet_rcv()
  dwc_eth_qos: Fix dma address for multi-fragment skbs
  phy: remove an unneeded condition
  mdio: remove an unneed condition
  mdio_bus: NULL dereference on allocation error
  net: Fix typo in netdev_intersect_features
  net: freescale: mac-fec: Fix build error from phy_device API change
  net: freescale: ucc_geth: Fix build error from phy_device API change
  bonding: Prevent IPv6 link local address on enslaved devices
  IB/mlx5: Add flow steering support
  net/mlx5_core: Export flow steering API
  net/mlx5_core: Make ipv4/ipv6 location more clear
  net/mlx5_core: Enable flow steering support for the IB driver
  net/mlx5_core: Initialize namespaces only when supported by device
  net/mlx5_core: Set priority attributes
  net/mlx5_core: Connect flow tables
  net/mlx5_core: Introduce modify flow table command
  net/mlx5_core: Managing root flow table
  ...

1 files changed, 500 insertions, 0 deletions

diff --git a/drivers/net/wireless/broadcom/b43legacy/debugfs.c b/drivers/net/wireless/broadcom/b43legacy/debugfs.c
new file mode 100644
index 000000000000..090910ea259e
--- /dev/null
+++ b/drivers/net/wireless/broadcom/b43legacy/debugfs.c
@@ -0,0 +1,500 @@
+/*
+
+  Broadcom B43legacy wireless driver
+
+  debugfs driver debugging code
+
+  Copyright (c) 2005-2007 Michael Buesch <m@bues.ch>
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  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 for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+
+*/
+
+#include <linux/fs.h>
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/mutex.h>
+
+#include "b43legacy.h"
+#include "main.h"
+#include "debugfs.h"
+#include "dma.h"
+#include "pio.h"
+#include "xmit.h"
+
+
+/* The root directory. */
+static struct dentry *rootdir;
+
+struct b43legacy_debugfs_fops {
+	ssize_t (*read)(struct b43legacy_wldev *dev, char *buf, size_t bufsize);
+	int (*write)(struct b43legacy_wldev *dev, const char *buf, size_t count);
+	struct file_operations fops;
+	/* Offset of struct b43legacy_dfs_file in struct b43legacy_dfsentry */
+	size_t file_struct_offset;
+	/* Take wl->irq_lock before calling read/write? */
+	bool take_irqlock;
+};
+
+static inline
+struct b43legacy_dfs_file * fops_to_dfs_file(struct b43legacy_wldev *dev,
+				       const struct b43legacy_debugfs_fops *dfops)
+{
+	void *p;
+
+	p = dev->dfsentry;
+	p += dfops->file_struct_offset;
+
+	return p;
+}
+
+
+#define fappend(fmt, x...)	\
+	do {							\
+		if (bufsize - count)				\
+			count += snprintf(buf + count,		\
+					  bufsize - count,	\
+					  fmt , ##x);		\
+		else						\
+			printk(KERN_ERR "b43legacy: fappend overflow\n"); \
+	} while (0)
+
+
+/* wl->irq_lock is locked */
+static ssize_t tsf_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	u64 tsf;
+
+	b43legacy_tsf_read(dev, &tsf);
+	fappend("0x%08x%08x\n",
+		(unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
+		(unsigned int)(tsf & 0xFFFFFFFFULL));
+
+	return count;
+}
+
+/* wl->irq_lock is locked */
+static int tsf_write_file(struct b43legacy_wldev *dev, const char *buf, size_t count)
+{
+	u64 tsf;
+
+	if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1)
+		return -EINVAL;
+	b43legacy_tsf_write(dev, tsf);
+
+	return 0;
+}
+
+/* wl->irq_lock is locked */
+static ssize_t ucode_regs_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	int i;
+
+	for (i = 0; i < 64; i++) {
+		fappend("r%d = 0x%04x\n", i,
+			b43legacy_shm_read16(dev, B43legacy_SHM_WIRELESS, i));
+	}
+
+	return count;
+}
+
+/* wl->irq_lock is locked */
+static ssize_t shm_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	ssize_t count = 0;
+	int i;
+	u16 tmp;
+	__le16 *le16buf = (__le16 *)buf;
+
+	for (i = 0; i < 0x1000; i++) {
+		if (bufsize < sizeof(tmp))
+			break;
+		tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2 * i);
+		le16buf[i] = cpu_to_le16(tmp);
+		count += sizeof(tmp);
+		bufsize -= sizeof(tmp);
+	}
+
+	return count;
+}
+
+static ssize_t txstat_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize)
+{
+	struct b43legacy_txstatus_log *log = &dev->dfsentry->txstatlog;
+	ssize_t count = 0;
+	unsigned long flags;
+	int i, idx;
+	struct b43legacy_txstatus *stat;
+
+	spin_lock_irqsave(&log->lock, flags);
+	if (log->end < 0) {
+		fappend("Nothing transmitted, yet\n");
+		goto out_unlock;
+	}
+	fappend("b43legacy TX status reports:\n\n"
+		"index | cookie | seq | phy_stat | frame_count | "
+		"rts_count | supp_reason | pm_indicated | "
+		"intermediate | for_ampdu | acked\n" "---\n");
+	i = log->end + 1;
+	idx = 0;
+	while (1) {
+		if (i == B43legacy_NR_LOGGED_TXSTATUS)
+			i = 0;
+		stat = &(log->log[i]);
+		if (stat->cookie) {
+			fappend("%03d | "
+				"0x%04X | 0x%04X | 0x%02X | "
+				"0x%X | 0x%X | "
+				"%u | %u | "
+				"%u | %u | %u\n",
+				idx,
+				stat->cookie, stat->seq, stat->phy_stat,
+				stat->frame_count, stat->rts_count,
+				stat->supp_reason, stat->pm_indicated,
+				stat->intermediate, stat->for_ampdu,
+				stat->acked);
+			idx++;
+		}
+		if (i == log->end)
+			break;
+		i++;
+	}
+out_unlock:
+	spin_unlock_irqrestore(&log->lock, flags);
+
+	return count;
+}
+
+/* wl->irq_lock is locked */
+static int restart_write_file(struct b43legacy_wldev *dev, const char *buf, size_t count)
+{
+	int err = 0;
+
+	if (count > 0 && buf[0] == '1') {
+		b43legacy_controller_restart(dev, "manually restarted");
+	} else
+		err = -EINVAL;
+
+	return err;
+}
+
+#undef fappend
+
+static ssize_t b43legacy_debugfs_read(struct file *file, char __user *userbuf,
+				size_t count, loff_t *ppos)
+{
+	struct b43legacy_wldev *dev;
+	struct b43legacy_debugfs_fops *dfops;
+	struct b43legacy_dfs_file *dfile;
+	ssize_t uninitialized_var(ret);
+	char *buf;
+	const size_t bufsize = 1024 * 16; /* 16 KiB buffer */
+	const size_t buforder = get_order(bufsize);
+	int err = 0;
+
+	if (!count)
+		return 0;
+	dev = file->private_data;
+	if (!dev)
+		return -ENODEV;
+
+	mutex_lock(&dev->wl->mutex);
+	if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
+		err = -ENODEV;
+		goto out_unlock;
+	}
+
+	dfops = container_of(file->f_op, struct b43legacy_debugfs_fops, fops);
+	if (!dfops->read) {
+		err = -ENOSYS;
+		goto out_unlock;
+	}
+	dfile = fops_to_dfs_file(dev, dfops);
+
+	if (!dfile->buffer) {
+		buf = (char *)__get_free_pages(GFP_KERNEL, buforder);
+		if (!buf) {
+			err = -ENOMEM;
+			goto out_unlock;
+		}
+		memset(buf, 0, bufsize);
+		if (dfops->take_irqlock) {
+			spin_lock_irq(&dev->wl->irq_lock);
+			ret = dfops->read(dev, buf, bufsize);
+			spin_unlock_irq(&dev->wl->irq_lock);
+		} else
+			ret = dfops->read(dev, buf, bufsize);
+		if (ret <= 0) {
+			free_pages((unsigned long)buf, buforder);
+			err = ret;
+			goto out_unlock;
+		}
+		dfile->data_len = ret;
+		dfile->buffer = buf;
+	}
+
+	ret = simple_read_from_buffer(userbuf, count, ppos,
+				      dfile->buffer,
+				      dfile->data_len);
+	if (*ppos >= dfile->data_len) {
+		free_pages((unsigned long)dfile->buffer, buforder);
+		dfile->buffer = NULL;
+		dfile->data_len = 0;
+	}
+out_unlock:
+	mutex_unlock(&dev->wl->mutex);
+
+	return err ? err : ret;
+}
+
+static ssize_t b43legacy_debugfs_write(struct file *file,
+				 const char __user *userbuf,
+				 size_t count, loff_t *ppos)
+{
+	struct b43legacy_wldev *dev;
+	struct b43legacy_debugfs_fops *dfops;
+	char *buf;
+	int err = 0;
+
+	if (!count)
+		return 0;
+	if (count > PAGE_SIZE)
+		return -E2BIG;
+	dev = file->private_data;
+	if (!dev)
+		return -ENODEV;
+
+	mutex_lock(&dev->wl->mutex);
+	if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) {
+		err = -ENODEV;
+		goto out_unlock;
+	}
+
+	dfops = container_of(file->f_op, struct b43legacy_debugfs_fops, fops);
+	if (!dfops->write) {
+		err = -ENOSYS;
+		goto out_unlock;
+	}
+
+	buf = (char *)get_zeroed_page(GFP_KERNEL);
+	if (!buf) {
+		err = -ENOMEM;
+		goto out_unlock;
+	}
+	if (copy_from_user(buf, userbuf, count)) {
+		err = -EFAULT;
+		goto out_freepage;
+	}
+	if (dfops->take_irqlock) {
+		spin_lock_irq(&dev->wl->irq_lock);
+		err = dfops->write(dev, buf, count);
+		spin_unlock_irq(&dev->wl->irq_lock);
+	} else
+		err = dfops->write(dev, buf, count);
+	if (err)
+		goto out_freepage;
+
+out_freepage:
+	free_page((unsigned long)buf);
+out_unlock:
+	mutex_unlock(&dev->wl->mutex);
+
+	return err ? err : count;
+}
+
+
+#define B43legacy_DEBUGFS_FOPS(name, _read, _write, _take_irqlock)	\
+	static struct b43legacy_debugfs_fops fops_##name = {		\
+		.read	= _read,				\
+		.write	= _write,				\
+		.fops	= {					\
+			.open	= simple_open,				\
+			.read	= b43legacy_debugfs_read,		\
+			.write	= b43legacy_debugfs_write,		\
+			.llseek = generic_file_llseek,			\
+		},						\
+		.file_struct_offset = offsetof(struct b43legacy_dfsentry, \
+					       file_##name),	\
+		.take_irqlock	= _take_irqlock,		\
+	}
+
+B43legacy_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1);
+B43legacy_DEBUGFS_FOPS(ucode_regs, ucode_regs_read_file, NULL, 1);
+B43legacy_DEBUGFS_FOPS(shm, shm_read_file, NULL, 1);
+B43legacy_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0);
+B43legacy_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1);
+
+
+int b43legacy_debug(struct b43legacy_wldev *dev, enum b43legacy_dyndbg feature)
+{
+	return !!(dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
+}
+
+static void b43legacy_remove_dynamic_debug(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dfsentry *e = dev->dfsentry;
+	int i;
+
+	for (i = 0; i < __B43legacy_NR_DYNDBG; i++)
+		debugfs_remove(e->dyn_debug_dentries[i]);
+}
+
+static void b43legacy_add_dynamic_debug(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dfsentry *e = dev->dfsentry;
+	struct dentry *d;
+
+#define add_dyn_dbg(name, id, initstate) do {		\
+	e->dyn_debug[id] = (initstate);			\
+	d = debugfs_create_bool(name, 0600, e->subdir,	\
+				&(e->dyn_debug[id]));	\
+	if (!IS_ERR(d))					\
+		e->dyn_debug_dentries[id] = d;		\
+				} while (0)
+
+	add_dyn_dbg("debug_xmitpower", B43legacy_DBG_XMITPOWER, false);
+	add_dyn_dbg("debug_dmaoverflow", B43legacy_DBG_DMAOVERFLOW, false);
+	add_dyn_dbg("debug_dmaverbose", B43legacy_DBG_DMAVERBOSE, false);
+	add_dyn_dbg("debug_pwork_fast", B43legacy_DBG_PWORK_FAST, false);
+	add_dyn_dbg("debug_pwork_stop", B43legacy_DBG_PWORK_STOP, false);
+
+#undef add_dyn_dbg
+}
+
+void b43legacy_debugfs_add_device(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dfsentry *e;
+	struct b43legacy_txstatus_log *log;
+	char devdir[16];
+
+	B43legacy_WARN_ON(!dev);
+	e = kzalloc(sizeof(*e), GFP_KERNEL);
+	if (!e) {
+		b43legacyerr(dev->wl, "debugfs: add device OOM\n");
+		return;
+	}
+	e->dev = dev;
+	log = &e->txstatlog;
+	log->log = kcalloc(B43legacy_NR_LOGGED_TXSTATUS,
+			   sizeof(struct b43legacy_txstatus), GFP_KERNEL);
+	if (!log->log) {
+		b43legacyerr(dev->wl, "debugfs: add device txstatus OOM\n");
+		kfree(e);
+		return;
+	}
+	log->end = -1;
+	spin_lock_init(&log->lock);
+
+	dev->dfsentry = e;
+
+	snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
+	e->subdir = debugfs_create_dir(devdir, rootdir);
+	if (!e->subdir || IS_ERR(e->subdir)) {
+		if (e->subdir == ERR_PTR(-ENODEV)) {
+			b43legacydbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not "
+			       "enabled in kernel config\n");
+		} else {
+			b43legacyerr(dev->wl, "debugfs: cannot create %s directory\n",
+			       devdir);
+		}
+		dev->dfsentry = NULL;
+		kfree(log->log);
+		kfree(e);
+		return;
+	}
+
+#define ADD_FILE(name, mode)	\
+	do {							\
+		struct dentry *d;				\
+		d = debugfs_create_file(__stringify(name),	\
+					mode, e->subdir, dev,	\
+					&fops_##name.fops);	\
+		e->file_##name.dentry = NULL;			\
+		if (!IS_ERR(d))					\
+			e->file_##name.dentry = d;		\
+	} while (0)
+
+
+	ADD_FILE(tsf, 0600);
+	ADD_FILE(ucode_regs, 0400);
+	ADD_FILE(shm, 0400);
+	ADD_FILE(txstat, 0400);
+	ADD_FILE(restart, 0200);
+
+#undef ADD_FILE
+
+	b43legacy_add_dynamic_debug(dev);
+}
+
+void b43legacy_debugfs_remove_device(struct b43legacy_wldev *dev)
+{
+	struct b43legacy_dfsentry *e;
+
+	if (!dev)
+		return;
+	e = dev->dfsentry;
+	if (!e)
+		return;
+	b43legacy_remove_dynamic_debug(dev);
+
+	debugfs_remove(e->file_tsf.dentry);
+	debugfs_remove(e->file_ucode_regs.dentry);
+	debugfs_remove(e->file_shm.dentry);
+	debugfs_remove(e->file_txstat.dentry);
+	debugfs_remove(e->file_restart.dentry);
+
+	debugfs_remove(e->subdir);
+	kfree(e->txstatlog.log);
+	kfree(e);
+}
+
+void b43legacy_debugfs_log_txstat(struct b43legacy_wldev *dev,
+			    const struct b43legacy_txstatus *status)
+{
+	struct b43legacy_dfsentry *e = dev->dfsentry;
+	struct b43legacy_txstatus_log *log;
+	struct b43legacy_txstatus *cur;
+	int i;
+
+	if (!e)
+		return;
+	log = &e->txstatlog;
+	B43legacy_WARN_ON(!irqs_disabled());
+	spin_lock(&log->lock);
+	i = log->end + 1;
+	if (i == B43legacy_NR_LOGGED_TXSTATUS)
+		i = 0;
+	log->end = i;
+	cur = &(log->log[i]);
+	memcpy(cur, status, sizeof(*cur));
+	spin_unlock(&log->lock);
+}
+
+void b43legacy_debugfs_init(void)
+{
+	rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+	if (IS_ERR(rootdir))
+		rootdir = NULL;
+}
+
+void b43legacy_debugfs_exit(void)
+{
+	debugfs_remove(rootdir);
+}