forked from luck/tmp_suning_uos_patched
c1a8f1f1c8
In 5e140dfc1f "net: reorder struct Qdisc
for better SMP performance" the definition of struct gnet_stats_basic
changed incompatibly, as copies of this struct are shipped to
userland via netlink.
Restoring old behavior is not welcome, for performance reason.
Fix is to use a private structure for kernel, and
teach gnet_stats_copy_basic() to convert from kernel to user land,
using legacy structure (struct gnet_stats_basic)
Based on a report and initial patch from Michael Spang.
Reported-by: Michael Spang <mspang@csclub.uwaterloo.ca>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
#ifndef __LINUX_GEN_STATS_H
|
|
#define __LINUX_GEN_STATS_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
enum {
|
|
TCA_STATS_UNSPEC,
|
|
TCA_STATS_BASIC,
|
|
TCA_STATS_RATE_EST,
|
|
TCA_STATS_QUEUE,
|
|
TCA_STATS_APP,
|
|
__TCA_STATS_MAX,
|
|
};
|
|
#define TCA_STATS_MAX (__TCA_STATS_MAX - 1)
|
|
|
|
/**
|
|
* struct gnet_stats_basic - byte/packet throughput statistics
|
|
* @bytes: number of seen bytes
|
|
* @packets: number of seen packets
|
|
*/
|
|
struct gnet_stats_basic
|
|
{
|
|
__u64 bytes;
|
|
__u32 packets;
|
|
};
|
|
struct gnet_stats_basic_packed
|
|
{
|
|
__u64 bytes;
|
|
__u32 packets;
|
|
} __attribute__ ((packed));
|
|
|
|
/**
|
|
* struct gnet_stats_rate_est - rate estimator
|
|
* @bps: current byte rate
|
|
* @pps: current packet rate
|
|
*/
|
|
struct gnet_stats_rate_est
|
|
{
|
|
__u32 bps;
|
|
__u32 pps;
|
|
};
|
|
|
|
/**
|
|
* struct gnet_stats_queue - queuing statistics
|
|
* @qlen: queue length
|
|
* @backlog: backlog size of queue
|
|
* @drops: number of dropped packets
|
|
* @requeues: number of requeues
|
|
* @overlimits: number of enqueues over the limit
|
|
*/
|
|
struct gnet_stats_queue
|
|
{
|
|
__u32 qlen;
|
|
__u32 backlog;
|
|
__u32 drops;
|
|
__u32 requeues;
|
|
__u32 overlimits;
|
|
};
|
|
|
|
/**
|
|
* struct gnet_estimator - rate estimator configuration
|
|
* @interval: sampling period
|
|
* @ewma_log: the log of measurement window weight
|
|
*/
|
|
struct gnet_estimator
|
|
{
|
|
signed char interval;
|
|
unsigned char ewma_log;
|
|
};
|
|
|
|
|
|
#endif /* __LINUX_GEN_STATS_H */
|