4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Thomas Graf <tgraf@suug.ch>
11 * Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
13 * See Documentation/networking/gen_stats.txt
16 #include <linux/types.h>
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/interrupt.h>
20 #include <linux/socket.h>
21 #include <linux/rtnetlink.h>
22 #include <linux/gen_stats.h>
23 #include <net/gen_stats.h>
27 gnet_stats_copy(struct gnet_dump
*d
, int type
, void *buf
, int size
)
29 RTA_PUT(d
->skb
, type
, size
, buf
);
33 spin_unlock_bh(d
->lock
);
38 gnet_stats_start_copy_compat(struct sk_buff
*skb
, int type
, int tc_stats_type
,
39 int xstats_type
, spinlock_t
*lock
, struct gnet_dump
*d
)
43 d
->tail
= (struct rtattr
*) skb
->tail
;
45 d
->compat_tc_stats
= tc_stats_type
;
46 d
->compat_xstats
= xstats_type
;
49 if (d
->compat_tc_stats
)
50 memset(&d
->tc_stats
, 0, sizeof(d
->tc_stats
));
52 return gnet_stats_copy(d
, type
, NULL
, 0);
56 gnet_stats_start_copy(struct sk_buff
*skb
, int type
, spinlock_t
*lock
,
59 return gnet_stats_start_copy_compat(skb
, type
, 0, 0, lock
, d
);
64 gnet_stats_copy_basic(struct gnet_dump
*d
, struct gnet_stats_basic
*b
)
66 if (d
->compat_tc_stats
) {
67 d
->tc_stats
.bytes
= b
->bytes
;
68 d
->tc_stats
.packets
= b
->packets
;
71 return gnet_stats_copy(d
, TCA_STATS_BASIC
, b
, sizeof(*b
));
75 gnet_stats_copy_rate_est(struct gnet_dump
*d
, struct gnet_stats_rate_est
*r
)
77 if (d
->compat_tc_stats
) {
78 d
->tc_stats
.bps
= r
->bps
;
79 d
->tc_stats
.pps
= r
->pps
;
82 return gnet_stats_copy(d
, TCA_STATS_RATE_EST
, r
, sizeof(*r
));
86 gnet_stats_copy_queue(struct gnet_dump
*d
, struct gnet_stats_queue
*q
)
88 if (d
->compat_tc_stats
) {
89 d
->tc_stats
.drops
= q
->drops
;
90 d
->tc_stats
.qlen
= q
->qlen
;
91 d
->tc_stats
.backlog
= q
->backlog
;
92 d
->tc_stats
.overlimits
= q
->overlimits
;
95 return gnet_stats_copy(d
, TCA_STATS_QUEUE
, q
, sizeof(*q
));
99 gnet_stats_copy_app(struct gnet_dump
*d
, void *st
, int len
)
101 if (d
->compat_xstats
)
102 d
->xstats
= (struct rtattr
*) d
->skb
->tail
;
103 return gnet_stats_copy(d
, TCA_STATS_APP
, st
, len
);
107 gnet_stats_finish_copy(struct gnet_dump
*d
)
109 d
->tail
->rta_len
= d
->skb
->tail
- (u8
*) d
->tail
;
111 if (d
->compat_tc_stats
)
112 if (gnet_stats_copy(d
, d
->compat_tc_stats
, &d
->tc_stats
,
113 sizeof(d
->tc_stats
)) < 0)
116 if (d
->compat_xstats
&& d
->xstats
) {
117 if (gnet_stats_copy(d
, d
->compat_xstats
, RTA_DATA(d
->xstats
),
118 RTA_PAYLOAD(d
->xstats
)) < 0)
122 spin_unlock_bh(d
->lock
);
127 EXPORT_SYMBOL(gnet_stats_start_copy
);
128 EXPORT_SYMBOL(gnet_stats_copy_basic
);
129 EXPORT_SYMBOL(gnet_stats_copy_rate_est
);
130 EXPORT_SYMBOL(gnet_stats_copy_queue
);
131 EXPORT_SYMBOL(gnet_stats_copy_app
);
132 EXPORT_SYMBOL(gnet_stats_finish_copy
);