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net/core: Add new basic hardware counter

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Add a new hardware specific basic counter, TCA_STATS_BASIC_HW. This can
be used to count packets/bytes processed by hardware offload.

Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eelco Chaudron 2018-09-21 07:13:54 -04:00 committed by David S. Miller
parent 7ff2ea0bbf
commit 5e111210a4
3 changed files with 59 additions and 19 deletions
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4
include/net/gen_stats.h
View File

@ -44,6 +44,10 @@ void __gnet_stats_copy_basic(const seqcount_t *running,
struct gnet_stats_basic_packed *bstats,
struct gnet_stats_basic_cpu __percpu *cpu,
struct gnet_stats_basic_packed *b);
int gnet_stats_copy_basic_hw(const seqcount_t *running,
struct gnet_dump *d,
struct gnet_stats_basic_cpu __percpu *cpu,
struct gnet_stats_basic_packed *b);
int gnet_stats_copy_rate_est(struct gnet_dump *d,
struct net_rate_estimator __rcu **ptr);
int gnet_stats_copy_queue(struct gnet_dump *d,

1
include/uapi/linux/gen_stats.h
View File

@ -12,6 +12,7 @@ enum {
TCA_STATS_APP,
TCA_STATS_RATE_EST64,
TCA_STATS_PAD,
TCA_STATS_BASIC_HW,
__TCA_STATS_MAX,
};
#define TCA_STATS_MAX (__TCA_STATS_MAX - 1)

73
net/core/gen_stats.c
View File

@ -162,6 +162,34 @@ __gnet_stats_copy_basic(const seqcount_t *running,
}
EXPORT_SYMBOL(__gnet_stats_copy_basic);
int
___gnet_stats_copy_basic(const seqcount_t *running,
struct gnet_dump *d,
struct gnet_stats_basic_cpu __percpu *cpu,
struct gnet_stats_basic_packed *b,
int type)
{
struct gnet_stats_basic_packed bstats = {0};
__gnet_stats_copy_basic(running, &bstats, cpu, b);
if (d->compat_tc_stats && type == TCA_STATS_BASIC) {
d->tc_stats.bytes = bstats.bytes;
d->tc_stats.packets = bstats.packets;
}
if (d->tail) {
struct gnet_stats_basic sb;
memset(&sb, 0, sizeof(sb));
sb.bytes = bstats.bytes;
sb.packets = bstats.packets;
return gnet_stats_copy(d, type, &sb, sizeof(sb),
TCA_STATS_PAD);
}
return 0;
}
/**
* gnet_stats_copy_basic - copy basic statistics into statistic TLV
* @running: seqcount_t pointer
@ -181,28 +209,35 @@ gnet_stats_copy_basic(const seqcount_t *running,
struct gnet_stats_basic_cpu __percpu *cpu,
struct gnet_stats_basic_packed *b)
{
struct gnet_stats_basic_packed bstats = {0};
__gnet_stats_copy_basic(running, &bstats, cpu, b);
if (d->compat_tc_stats) {
d->tc_stats.bytes = bstats.bytes;
d->tc_stats.packets = bstats.packets;
}
if (d->tail) {
struct gnet_stats_basic sb;
memset(&sb, 0, sizeof(sb));
sb.bytes = bstats.bytes;
sb.packets = bstats.packets;
return gnet_stats_copy(d, TCA_STATS_BASIC, &sb, sizeof(sb),
TCA_STATS_PAD);
}
return 0;
return ___gnet_stats_copy_basic(running, d, cpu, b,
TCA_STATS_BASIC);
}
EXPORT_SYMBOL(gnet_stats_copy_basic);
/**
* gnet_stats_copy_basic_hw - copy basic hw statistics into statistic TLV
* @running: seqcount_t pointer
* @d: dumping handle
* @cpu: copy statistic per cpu
* @b: basic statistics
*
* Appends the basic statistics to the top level TLV created by
* gnet_stats_start_copy().
*
* Returns 0 on success or -1 with the statistic lock released
* if the room in the socket buffer was not sufficient.
*/
int
gnet_stats_copy_basic_hw(const seqcount_t *running,
struct gnet_dump *d,
struct gnet_stats_basic_cpu __percpu *cpu,
struct gnet_stats_basic_packed *b)
{
return ___gnet_stats_copy_basic(running, d, cpu, b,
TCA_STATS_BASIC_HW);
}
EXPORT_SYMBOL(gnet_stats_copy_basic_hw);
/**
* gnet_stats_copy_rate_est - copy rate estimator statistics into statistics TLV
* @d: dumping handle