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ipmr/ip6mr: advertise mfc stats via rtnetlink 

These statistics can be checked only via /proc/net/ip_mr_cache or
SIOCGETSGCNT[_IN6] and thus only for the table RT_TABLE_DEFAULT.
Advertising them via rtnetlink allows to get statistics for all cache entries,
whatever the table is.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2012-12-04 01:13:37 +00:00 committed by David S. Miller
parent 70b386a0cc
commit adfa85e45d
3 changed files with 21 additions and 0 deletions
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7
include/uapi/linux/rtnetlink.h
View File

@ -288,6 +288,7 @@ enum rtattr_type_t {
RTA_MP_ALGO, /* no longer used */
RTA_TABLE,
RTA_MARK,
RTA_MFC_STATS,
__RTA_MAX
};
@ -408,6 +409,12 @@ struct rta_session {
} u;
};
struct rta_mfc_stats {
__u64 mfcs_packets;
__u64 mfcs_bytes;
__u64 mfcs_wrong_if;
};
/****
* General form of address family dependent message.
****/

7
net/ipv4/ipmr.c
View File

@ -2046,6 +2046,7 @@ static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
int ct;
struct rtnexthop *nhp;
struct nlattr *mp_attr;
struct rta_mfc_stats mfcs;
/* If cache is unresolved, don't try to parse IIF and OIF */
if (c->mfc_parent >= MAXVIFS)
@ -2074,6 +2075,12 @@ static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
nla_nest_end(skb, mp_attr);
mfcs.mfcs_packets = c->mfc_un.res.pkt;
mfcs.mfcs_bytes = c->mfc_un.res.bytes;
mfcs.mfcs_wrong_if = c->mfc_un.res.wrong_if;
if (nla_put(skb, RTA_MFC_STATS, sizeof(mfcs), &mfcs) < 0)
return -EMSGSIZE;
rtm->rtm_type = RTN_MULTICAST;
return 1;
}

7
net/ipv6/ip6mr.c
View File

@ -2120,6 +2120,7 @@ static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
int ct;
struct rtnexthop *nhp;
struct nlattr *mp_attr;
struct rta_mfc_stats mfcs;
/* If cache is unresolved, don't try to parse IIF and OIF */
if (c->mf6c_parent >= MAXMIFS)
@ -2149,6 +2150,12 @@ static int __ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
nla_nest_end(skb, mp_attr);
mfcs.mfcs_packets = c->mfc_un.res.pkt;
mfcs.mfcs_bytes = c->mfc_un.res.bytes;
mfcs.mfcs_wrong_if = c->mfc_un.res.wrong_if;
if (nla_put(skb, RTA_MFC_STATS, sizeof(mfcs), &mfcs) < 0)
return -EMSGSIZE;
rtm->rtm_type = RTN_MULTICAST;
return 1;
}