[PATCH 1/2] net: Enable 64-bit net device statistics on 32-bit architectures

Ben Hutchings
2010-06-03T17:39:08Z

Use struct rtnl_link_stats64 as the statistics structure.

On 32-bit architectures, insert 32 bits of padding after/before each
field of struct net_device_stats to make its layout compatible with
struct rtnl_link_stats64. Add an anonymous union in net_device; move
stats into the union and add struct rtnl_link_stats64 stats64.

Add net_device_ops::ndo_get_stats64, implementations of which will
return a pointer to struct rtnl_link_stats64. Drivers that implement
this operation must not update the structure asynchronously. Change
dev_get_stats() to call this operation if available, and to return a
pointer to struct rtnl_link_stats64.

Define accessor macros for reading rtnl_link_stats64 in a way that
allows for asynchronous atomic updates by drivers that do not
implement ndo_get_stats64. Change callers of dev_get_stats() to
use these macros when reading the returned structure.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
This implements step 1 of the transition I previously proposed, with the
following modifications:

- Use struct rtnl_link_stats64 directly instead of defining an
identical struct net_device_stats64.
- Do not allow asynchronous writes to struct rtnl_link_stats64. This
is not possible to do atomically on all architectures, so there is
little value in allowing it.
- Assume that the padding in struct net_device_stats is cleared by
drivers if they do not use net_device::stats. Drivers must already
clear the fields they don't use, such as tx_compressed.

Ben.

include/linux/if_link.h | 3 +-
include/linux/netdevice.h | 112 +++++++++++++++++++++++++++-------------
net/8021q/vlanproc.c | 18 ++++--
net/core/dev.c | 60 +++++++++++++---------
net/core/net-sysfs.c | 13 +++--
net/core/rtnetlink.c | 126 ++++++++++++++++++++++-----------------------
6 files changed, 194 insertions(+), 138 deletions(-)

diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index 85c812d..7fcad2e 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -4,7 +4,7 @@
#include <linux/types.h>
#include <linux/netlink.h>

-/* The struct should be in sync with struct net_device_stats */
+/* This struct should be in sync with struct rtnl_link_stats64 */
struct rtnl_link_stats {
__u32 rx_packets; /* total packets received */
__u32 tx_packets; /* total packets transmitted */
@@ -37,6 +37,7 @@ struct rtnl_link_stats {
__u32 tx_compressed;
};

+/* The main device statistics structure */
struct rtnl_link_stats64 {
__u64 rx_packets; /* total packets received */
__u64 tx_packets; /* total packets transmitted */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a249161..3f2b49d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -159,45 +159,70 @@ static inline bool dev_xmit_complete(int rc)
#define MAX_HEADER (LL_MAX_HEADER + 48)
#endif

-#endif /* __KERNEL__ */
-
/*
- * Network device statistics. Akin to the 2.0 ether stats but
- * with byte counters.
+ * Old network device statistics. Fields are native words
+ * (unsigned long) so they can be read and written atomically.
+ * Each field is padded to 64 bits for compatibility with
+ * rtnl_link_stats64.
*/

+#if BITS_PER_LONG == 64
+#define NET_DEVICE_STATS_DEFINE(name) u64 name
+#define RTNL_LINK_STATS64_READ(stats, name) \
+ ACCESS_ONCE((stats)->name)
+#define RTNL_LINK_STATS64_READ_OFFSET(stats, offset) \
+ ACCESS_ONCE((const u64 *)((const u8 *)(stats) + (offset)))
+#define RTNL_LINK_STATS64_READ32(stats, name) \
+ ((u32)ACCESS_ONCE((stats)->name))
+#else
+#if defined(__LITTLE_ENDIAN)
+#define NET_DEVICE_STATS_DEFINE(name) u32 name, pad_ ## name
+#define RTNL_LINK_STATS64_READ_OFFSET(stats, offset) \
+ (ACCESS_ONCE(*(const u32 *)((const u8 *)(stats) + (offset))) | \
+ (u64)(*(const u32 *)((const u8 *)(stats) + (offset) + 4)) << 32)
+#define RTNL_LINK_STATS64_READ32(stats, name) \
+ (((const volatile u32 *)&(stats)->name)[0])
+#else
+#define NET_DEVICE_STATS_DEFINE(name) u32 pad_ ## name, name
+#define RTNL_LINK_STATS64_READ_OFFSET(stats, offset) \
+ ((u64)(*(const u32 *)((const u8 *)(stats) + (offset))) << 32 | \
+ ACCESS_ONCE(*(const u32 *)((const u8 *)(stats) + (offset) + 4)))
+#define RTNL_LINK_STATS64_READ32(stats, name) \
+ (((const volatile u32 *)&(stats)->name)[1])
+#endif
+#define RTNL_LINK_STATS64_READ(stats, name) \
+ RTNL_LINK_STATS64_READ_OFFSET( \
+ stats, offsetof(struct rtnl_link_stats64, name))
+#endif
+
struct net_device_stats {
- unsigned long rx_packets; /* total packets received */
- unsigned long tx_packets; /* total packets transmitted */
- unsigned long rx_bytes; /* total bytes received */
- unsigned long tx_bytes; /* total bytes transmitted */
- unsigned long rx_errors; /* bad packets received */
- unsigned long tx_errors; /* packet transmit problems */
- unsigned long rx_dropped; /* no space in linux buffers */
- unsigned long tx_dropped; /* no space available in linux */
- unsigned long multicast; /* multicast packets received */
- unsigned long collisions;
-
- /* detailed rx_errors: */
- unsigned long rx_length_errors;
- unsigned long rx_over_errors; /* receiver ring buff overflow */
- unsigned long rx_crc_errors; /* recved pkt with crc error */
- unsigned long rx_frame_errors; /* recv'd frame alignment error */
- unsigned long rx_fifo_errors; /* recv'r fifo overrun */
- unsigned long rx_missed_errors; /* receiver missed packet */
-
- /* detailed tx_errors */
- unsigned long tx_aborted_errors;
- unsigned long tx_carrier_errors;
- unsigned long tx_fifo_errors;
- unsigned long tx_heartbeat_errors;
- unsigned long tx_window_errors;
-
- /* for cslip etc */
- unsigned long rx_compressed;
- unsigned long tx_compressed;
+ NET_DEVICE_STATS_DEFINE(rx_packets);
+ NET_DEVICE_STATS_DEFINE(tx_packets);
+ NET_DEVICE_STATS_DEFINE(rx_bytes);
+ NET_DEVICE_STATS_DEFINE(tx_bytes);
+ NET_DEVICE_STATS_DEFINE(rx_errors);
+ NET_DEVICE_STATS_DEFINE(tx_errors);
+ NET_DEVICE_STATS_DEFINE(rx_dropped);
+ NET_DEVICE_STATS_DEFINE(tx_dropped);
+ NET_DEVICE_STATS_DEFINE(multicast);
+ NET_DEVICE_STATS_DEFINE(collisions);
+ NET_DEVICE_STATS_DEFINE(rx_length_errors);
+ NET_DEVICE_STATS_DEFINE(rx_over_errors);
+ NET_DEVICE_STATS_DEFINE(rx_crc_errors);
+ NET_DEVICE_STATS_DEFINE(rx_frame_errors);
+ NET_DEVICE_STATS_DEFINE(rx_fifo_errors);
+ NET_DEVICE_STATS_DEFINE(rx_missed_errors);
+ NET_DEVICE_STATS_DEFINE(tx_aborted_errors);
+ NET_DEVICE_STATS_DEFINE(tx_carrier_errors);
+ NET_DEVICE_STATS_DEFINE(tx_fifo_errors);
+ NET_DEVICE_STATS_DEFINE(tx_heartbeat_errors);
+ NET_DEVICE_STATS_DEFINE(tx_window_errors);
+ NET_DEVICE_STATS_DEFINE(rx_compressed);
+ NET_DEVICE_STATS_DEFINE(tx_compressed);
};

+#endif /* __KERNEL__ */
+

/* Media selection options. */
enum {
@@ -660,10 +685,19 @@ struct netdev_rx_queue {
* Callback uses when the transmitter has not made any progress
* for dev->watchdog ticks.
*
+ * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev);
* struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
* Called when a user wants to get the network device usage
- * statistics. If not defined, the counters in dev->stats will
- * be used.
+ * statistics. Drivers must do one of the following:
+ * 1. Define @ndo_get_stats64 to update a rtnl_link_stats64 structure
+ * (which should normally be dev->stats64) and return a ponter to
+ * it. The structure must not be changed asynchronously.
+ * 2. Define @ndo_get_stats to update a net_device_stats64 structure
+ * (which should normally be dev->stats) and return a pointer to
+ * it. The structure may be changed asynchronously only if each
+ * field is written atomically.
+ * 3. Update dev->stats asynchronously and atomically, and define
+ * neither operation.
*
* void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
* If device support VLAN receive accleration
@@ -718,6 +752,7 @@ struct net_device_ops {
struct neigh_parms *);
void (*ndo_tx_timeout) (struct net_device *dev);

+ struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev);
struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);

void (*ndo_vlan_rx_register)(struct net_device *dev,
@@ -867,7 +902,10 @@ struct net_device {
int ifindex;
int iflink;

- struct net_device_stats stats;
+ union {
+ struct rtnl_link_stats64 stats64;
+ struct net_device_stats stats;
+ };

#ifdef CONFIG_WIRELESS_EXT
/* List of functions to handle Wireless Extensions (instead of ioctl).
@@ -2118,7 +2156,7 @@ extern void netdev_features_change(struct net_device *dev);
/* Load a device via the kmod */
extern void dev_load(struct net *net, const char *name);
extern void dev_mcast_init(void);
-extern const struct net_device_stats *dev_get_stats(struct net_device *dev);
+extern const struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev);
extern void dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats);

extern int netdev_max_backlog;
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index afead35..62706f2 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -278,8 +278,9 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
{
struct net_device *vlandev = (struct net_device *) seq->private;
const struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
- const struct net_device_stats *stats;
+ const struct rtnl_link_stats64 *stats;
static const char fmt[] = "%30s %12lu\n";
+ static const char fmt64[] = "%30s %12llu\n";
int i;

if (!is_vlan_dev(vlandev))
@@ -291,12 +292,17 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
vlandev->name, dev_info->vlan_id,
(int)(dev_info->flags & 1), vlandev->priv_flags);

- seq_printf(seq, fmt, "total frames received", stats->rx_packets);
- seq_printf(seq, fmt, "total bytes received", stats->rx_bytes);
- seq_printf(seq, fmt, "Broadcast/Multicast Rcvd", stats->multicast);
+ seq_printf(seq, fmt64, "total frames received",
+ RTNL_LINK_STATS64_READ(stats, rx_packets));
+ seq_printf(seq, fmt64, "total bytes received",
+ RTNL_LINK_STATS64_READ(stats, rx_bytes));
+ seq_printf(seq, fmt64, "Broadcast/Multicast Rcvd",
+ RTNL_LINK_STATS64_READ(stats, multicast));
seq_puts(seq, "\n");
- seq_printf(seq, fmt, "total frames transmitted", stats->tx_packets);
- seq_printf(seq, fmt, "total bytes transmitted", stats->tx_bytes);
+ seq_printf(seq, fmt64, "total frames transmitted",
+ RTNL_LINK_STATS64_READ(stats, tx_packets));
+ seq_printf(seq, fmt64, "total bytes transmitted",
+ RTNL_LINK_STATS64_READ(stats, tx_bytes));
seq_printf(seq, fmt, "total headroom inc",
dev_info->cnt_inc_headroom_on_tx);
seq_printf(seq, fmt, "total encap on xmit",
diff --git a/net/core/dev.c b/net/core/dev.c
index 983a3c1..aa48257 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3686,25 +3686,34 @@ void dev_seq_stop(struct seq_file *seq, void *v)

static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
{
- const struct net_device_stats *stats = dev_get_stats(dev);
-
- seq_printf(seq, "%6s: %7lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu "
- "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
- dev->name, stats->rx_bytes, stats->rx_packets,
- stats->rx_errors,
- stats->rx_dropped + stats->rx_missed_errors,
- stats->rx_fifo_errors,
- stats->rx_length_errors + stats->rx_over_errors +
- stats->rx_crc_errors + stats->rx_frame_errors,
- stats->rx_compressed, stats->multicast,
- stats->tx_bytes, stats->tx_packets,
- stats->tx_errors, stats->tx_dropped,
- stats->tx_fifo_errors, stats->collisions,
- stats->tx_carrier_errors +
- stats->tx_aborted_errors +
- stats->tx_window_errors +
- stats->tx_heartbeat_errors,
- stats->tx_compressed);
+ const struct rtnl_link_stats64 *stats = dev_get_stats(dev);
+
+ seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
+ "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
+ dev->name,
+ RTNL_LINK_STATS64_READ(stats, rx_bytes),
+ RTNL_LINK_STATS64_READ(stats, rx_packets),
+ RTNL_LINK_STATS64_READ(stats, rx_errors),
+ RTNL_LINK_STATS64_READ(stats, rx_dropped) +
+ RTNL_LINK_STATS64_READ(stats, rx_missed_errors),
+ RTNL_LINK_STATS64_READ(stats, rx_fifo_errors),
+ RTNL_LINK_STATS64_READ(stats, rx_length_errors) +
+ RTNL_LINK_STATS64_READ(stats, rx_over_errors) +
+ RTNL_LINK_STATS64_READ(stats, rx_crc_errors) +
+ RTNL_LINK_STATS64_READ(stats, rx_frame_errors),
+ RTNL_LINK_STATS64_READ(stats, rx_compressed),
+ RTNL_LINK_STATS64_READ(stats, multicast),
+ RTNL_LINK_STATS64_READ(stats, tx_bytes),
+ RTNL_LINK_STATS64_READ(stats, tx_packets),
+ RTNL_LINK_STATS64_READ(stats, tx_errors),
+ RTNL_LINK_STATS64_READ(stats, tx_dropped),
+ RTNL_LINK_STATS64_READ(stats, tx_fifo_errors),
+ RTNL_LINK_STATS64_READ(stats, collisions),
+ RTNL_LINK_STATS64_READ(stats, tx_carrier_errors) +
+ RTNL_LINK_STATS64_READ(stats, tx_aborted_errors) +
+ RTNL_LINK_STATS64_READ(stats, tx_window_errors) +
+ RTNL_LINK_STATS64_READ(stats, tx_heartbeat_errors),
+ RTNL_LINK_STATS64_READ(stats, tx_compressed));
}

/*
@@ -5266,18 +5275,21 @@ EXPORT_SYMBOL(dev_txq_stats_fold);
* @dev: device to get statistics from
*
* Get network statistics from device. The device driver may provide
- * its own method by setting dev->netdev_ops->get_stats; otherwise
- * the internal statistics structure is used.
+ * its own method by setting dev->netdev_ops->get_stats64 or
+ * dev->netdev_ops->get_stats; otherwise the internal statistics
+ * structure is used.
*/
-const struct net_device_stats *dev_get_stats(struct net_device *dev)
+const struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev)
{
const struct net_device_ops *ops = dev->netdev_ops;

+ if (ops->ndo_get_stats64)
+ return ops->ndo_get_stats64(dev);
if (ops->ndo_get_stats)
- return ops->ndo_get_stats(dev);
+ return (struct rtnl_link_stats64 *)ops->ndo_get_stats(dev);

dev_txq_stats_fold(dev, &dev->stats);
- return &dev->stats;
+ return &dev->stats64;
}
EXPORT_SYMBOL(dev_get_stats);

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 99e7052..a8dc20d 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -29,6 +29,7 @@ static const char fmt_hex[] = "%#x\n";
static const char fmt_long_hex[] = "%#lx\n";
static const char fmt_dec[] = "%d\n";
static const char fmt_ulong[] = "%lu\n";
+static const char fmt_u64[] = "%llu\n";

static inline int dev_isalive(const struct net_device *dev)
{
@@ -324,14 +325,14 @@ static ssize_t netstat_show(const struct device *d,
struct net_device *dev = to_net_dev(d);
ssize_t ret = -EINVAL;

- WARN_ON(offset > sizeof(struct net_device_stats) ||
- offset % sizeof(unsigned long) != 0);
+ WARN_ON(offset > sizeof(struct rtnl_link_stats64) ||
+ offset % sizeof(u64) != 0);

read_lock(&dev_base_lock);
if (dev_isalive(dev)) {
- const struct net_device_stats *stats = dev_get_stats(dev);
- ret = sprintf(buf, fmt_ulong,
- *(unsigned long *)(((u8 *) stats) + offset));
+ const struct rtnl_link_stats64 *stats = dev_get_stats(dev);
+ ret = sprintf(buf, fmt_u64,
+ RTNL_LINK_STATS64_READ_OFFSET(stats, offset));
}
read_unlock(&dev_base_lock);
return ret;
@@ -343,7 +344,7 @@ static ssize_t show_##name(struct device *d, \
struct device_attribute *attr, char *buf) \
{ \
return netstat_show(d, attr, buf, \
- offsetof(struct net_device_stats, name)); \
+ offsetof(struct rtnl_link_stats64, name)); \
} \
static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 1a2af24..8b131ad 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -579,69 +579,67 @@ static unsigned int rtnl_dev_combine_flags(const struct net_device *dev,
}

static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
- const struct net_device_stats *b)
+ const struct rtnl_link_stats64 *b)
{
- a->rx_packets = b->rx_packets;
- a->tx_packets = b->tx_packets;
- a->rx_bytes = b->rx_bytes;
- a->tx_bytes = b->tx_bytes;
- a->rx_errors = b->rx_errors;
- a->tx_errors = b->tx_errors;
- a->rx_dropped = b->rx_dropped;
- a->tx_dropped = b->tx_dropped;
-
- a->multicast = b->multicast;
- a->collisions = b->collisions;
-
- a->rx_length_errors = b->rx_length_errors;
- a->rx_over_errors = b->rx_over_errors;
- a->rx_crc_errors = b->rx_crc_errors;
- a->rx_frame_errors = b->rx_frame_errors;
- a->rx_fifo_errors = b->rx_fifo_errors;
- a->rx_missed_errors = b->rx_missed_errors;
-
- a->tx_aborted_errors = b->tx_aborted_errors;
- a->tx_carrier_errors = b->tx_carrier_errors;
- a->tx_fifo_errors = b->tx_fifo_errors;
- a->tx_heartbeat_errors = b->tx_heartbeat_errors;
- a->tx_window_errors = b->tx_window_errors;
-
- a->rx_compressed = b->rx_compressed;
- a->tx_compressed = b->tx_compressed;
+ a->rx_packets = RTNL_LINK_STATS64_READ32(b, rx_packets);
+ a->tx_packets = RTNL_LINK_STATS64_READ32(b, tx_packets);
+ a->rx_bytes = RTNL_LINK_STATS64_READ32(b, rx_bytes);
+ a->tx_bytes = RTNL_LINK_STATS64_READ32(b, tx_bytes);
+ a->rx_errors = RTNL_LINK_STATS64_READ32(b, rx_errors);
+ a->tx_errors = RTNL_LINK_STATS64_READ32(b, tx_errors);
+ a->rx_dropped = RTNL_LINK_STATS64_READ32(b, rx_dropped);
+ a->tx_dropped = RTNL_LINK_STATS64_READ32(b, tx_dropped);
+
+ a->multicast = RTNL_LINK_STATS64_READ32(b, multicast);
+ a->collisions = RTNL_LINK_STATS64_READ32(b, collisions);
+
+ a->rx_length_errors = RTNL_LINK_STATS64_READ32(b, rx_length_errors);
+ a->rx_over_errors = RTNL_LINK_STATS64_READ32(b, rx_over_errors);
+ a->rx_crc_errors = RTNL_LINK_STATS64_READ32(b, rx_crc_errors);
+ a->rx_frame_errors = RTNL_LINK_STATS64_READ32(b, rx_frame_errors);
+ a->rx_fifo_errors = RTNL_LINK_STATS64_READ32(b, rx_fifo_errors);
+ a->rx_missed_errors = RTNL_LINK_STATS64_READ32(b, rx_missed_errors);
+
+ a->tx_aborted_errors = RTNL_LINK_STATS64_READ32(b, tx_aborted_errors);
+ a->tx_carrier_errors = RTNL_LINK_STATS64_READ32(b, tx_carrier_errors);
+ a->tx_fifo_errors = RTNL_LINK_STATS64_READ32(b, tx_fifo_errors);
+ a->tx_heartbeat_errors = RTNL_LINK_STATS64_READ32(b, tx_heartbeat_errors);
+ a->tx_window_errors = RTNL_LINK_STATS64_READ32(b, tx_window_errors);
+
+ a->rx_compressed = RTNL_LINK_STATS64_READ32(b, rx_compressed);
+ a->tx_compressed = RTNL_LINK_STATS64_READ32(b, tx_compressed);
}

-static void copy_rtnl_link_stats64(void *v, const struct net_device_stats *b)
+static void copy_rtnl_link_stats64(struct rtnl_link_stats64 *a,
+ const struct rtnl_link_stats64 *b)
{
- struct rtnl_link_stats64 a;
-
- a.rx_packets = b->rx_packets;
- a.tx_packets = b->tx_packets;
- a.rx_bytes = b->rx_bytes;
- a.tx_bytes = b->tx_bytes;
- a.rx_errors = b->rx_errors;
- a.tx_errors = b->tx_errors;
- a.rx_dropped = b->rx_dropped;
- a.tx_dropped = b->tx_dropped;
-
- a.multicast = b->multicast;
- a.collisions = b->collisions;
-
- a.rx_length_errors = b->rx_length_errors;
- a.rx_over_errors = b->rx_over_errors;
- a.rx_crc_errors = b->rx_crc_errors;
- a.rx_frame_errors = b->rx_frame_errors;
- a.rx_fifo_errors = b->rx_fifo_errors;
- a.rx_missed_errors = b->rx_missed_errors;
-
- a.tx_aborted_errors = b->tx_aborted_errors;
- a.tx_carrier_errors = b->tx_carrier_errors;
- a.tx_fifo_errors = b->tx_fifo_errors;
- a.tx_heartbeat_errors = b->tx_heartbeat_errors;
- a.tx_window_errors = b->tx_window_errors;
-
- a.rx_compressed = b->rx_compressed;
- a.tx_compressed = b->tx_compressed;
- memcpy(v, &a, sizeof(a));
+ a->rx_packets = RTNL_LINK_STATS64_READ(b, rx_packets);
+ a->tx_packets = RTNL_LINK_STATS64_READ(b, tx_packets);
+ a->rx_bytes = RTNL_LINK_STATS64_READ(b, rx_bytes);
+ a->tx_bytes = RTNL_LINK_STATS64_READ(b, tx_bytes);
+ a->rx_errors = RTNL_LINK_STATS64_READ(b, rx_errors);
+ a->tx_errors = RTNL_LINK_STATS64_READ(b, tx_errors);
+ a->rx_dropped = RTNL_LINK_STATS64_READ(b, rx_dropped);
+ a->tx_dropped = RTNL_LINK_STATS64_READ(b, tx_dropped);
+
+ a->multicast = RTNL_LINK_STATS64_READ(b, multicast);
+ a->collisions = RTNL_LINK_STATS64_READ(b, collisions);
+
+ a->rx_length_errors = RTNL_LINK_STATS64_READ(b, rx_length_errors);
+ a->rx_over_errors = RTNL_LINK_STATS64_READ(b, rx_over_errors);
+ a->rx_crc_errors = RTNL_LINK_STATS64_READ(b, rx_crc_errors);
+ a->rx_frame_errors = RTNL_LINK_STATS64_READ(b, rx_frame_errors);
+ a->rx_fifo_errors = RTNL_LINK_STATS64_READ(b, rx_fifo_errors);
+ a->rx_missed_errors = RTNL_LINK_STATS64_READ(b, rx_missed_errors);
+
+ a->tx_aborted_errors = RTNL_LINK_STATS64_READ(b, tx_aborted_errors);
+ a->tx_carrier_errors = RTNL_LINK_STATS64_READ(b, tx_carrier_errors);
+ a->tx_fifo_errors = RTNL_LINK_STATS64_READ(b, tx_fifo_errors);
+ a->tx_heartbeat_errors = RTNL_LINK_STATS64_READ(b, tx_heartbeat_errors);
+ a->tx_window_errors = RTNL_LINK_STATS64_READ(b, tx_window_errors);
+
+ a->rx_compressed = RTNL_LINK_STATS64_READ(b, rx_compressed);
+ a->tx_compressed = RTNL_LINK_STATS64_READ(b, tx_compressed);
}

/* All VF info */
@@ -791,7 +789,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
{
struct ifinfomsg *ifm;
struct nlmsghdr *nlh;
- const struct net_device_stats *stats;
+ const struct rtnl_link_stats64 *stats;
struct nlattr *attr;

nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
--
1.6.2.5

--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.