I failed to find a nice place where to initialize the counters. The
code that uses counters is reachable even if gif(4) isn't compiled in.
I can think of 3 obvious ways to call the init function.
1. call ipip_init() through .pr_init. The idea would be to call
ipip_init() once per protosw entry that needs it, so the function
should return early if it was already run.
2. call ipip_init() from ip_init(), after all ip_init() is always
compiled in.
3. call ipip_init() from init_main.c.
The diff implements option 3, but what do you folks prefer?
Thoughts / ok?
Index: kern/init_main.c
===================================================================
RCS file: /d/cvs/src/sys/kern/init_main.c,v
retrieving revision 1.267
diff -u -p -r1.267 init_main.c
--- kern/init_main.c 6 Mar 2017 10:48:16 -0000 1.267
+++ kern/init_main.c 7 Mar 2017 14:20:17 -0000
@@ -147,6 +147,7 @@ void taskq_init(void);
void timeout_proc_init(void);
void pool_gc_pages(void *);
void percpu_init(void);
+void ipip_init(void);
extern char sigcode[], esigcode[], sigcoderet[];
#ifdef SYSCALL_DEBUG
@@ -364,6 +365,9 @@ main(void *framep)
/* Per CPU memory allocation */
percpu_init();
+
+ /* IP-in-IP memory allocation */
+ ipip_init();
/* Initialize the file systems. */
#if defined(NFSSERVER) || defined(NFSCLIENT)
Index: netinet/ip_ipip.c
===================================================================
RCS file: /d/cvs/src/sys/netinet/ip_ipip.c,v
retrieving revision 1.71
diff -u -p -r1.71 ip_ipip.c
--- netinet/ip_ipip.c 29 Jan 2017 19:58:47 -0000 1.71
+++ netinet/ip_ipip.c 7 Mar 2017 14:20:17 -0000
@@ -84,7 +84,14 @@
*/
int ipip_allow = 0;
-struct ipipstat ipipstat;
+struct cpumem *ipipcounters;
+
+void
+ipip_init(void)
+{
+ if (ipipcounters == NULL)
+ ipipcounters = counters_alloc(ipips_ncounters);
+}
/*
* Really only a wrapper for ipip_input(), for use with pr_input.
@@ -95,7 +102,7 @@ ip4_input(struct mbuf **mp, int *offp, i
/* If we do not accept IP-in-IP explicitly, drop. */
if (!ipip_allow && ((*mp)->m_flags & (M_AUTH|M_CONF)) == 0) {
DPRINTF(("ip4_input(): dropped due to policy\n"));
- ipipstat.ipips_pdrops++;
+ ipipstat_inc(ipips_pdrops);
m_freem(*mp);
return IPPROTO_DONE;
}
@@ -129,7 +136,7 @@ ipip_input(struct mbuf **mp, int *offp,
u_int8_t v;
sa_family_t af;
- ipipstat.ipips_ipackets++;
+ ipipstat_inc(ipips_ipackets);
m_copydata(m, 0, 1, &v);
@@ -143,7 +150,7 @@ ipip_input(struct mbuf **mp, int *offp,
break;
#endif
default:
- ipipstat.ipips_family++;
+ ipipstat_inc(ipips_family);
m_freem(m);
return IPPROTO_DONE;
}
@@ -152,7 +159,7 @@ ipip_input(struct mbuf **mp, int *offp,
if (m->m_len < hlen) {
if ((m = m_pullup(m, hlen)) == NULL) {
DPRINTF(("ipip_input(): m_pullup() failed\n"));
- ipipstat.ipips_hdrops++;
+ ipipstat_inc(ipips_hdrops);
return IPPROTO_DONE;
}
}
@@ -179,7 +186,7 @@ ipip_input(struct mbuf **mp, int *offp,
/* Sanity check */
if (m->m_pkthdr.len < sizeof(struct ip)) {
- ipipstat.ipips_hdrops++;
+ ipipstat_inc(ipips_hdrops);
m_freem(m);
return IPPROTO_DONE;
}
@@ -195,7 +202,7 @@ ipip_input(struct mbuf **mp, int *offp,
break;
#endif
default:
- ipipstat.ipips_family++;
+ ipipstat_inc(ipips_family);
m_freem(m);
return IPPROTO_DONE;
}
@@ -206,7 +213,7 @@ ipip_input(struct mbuf **mp, int *offp,
if (m->m_len < hlen) {
if ((m = m_pullup(m, hlen)) == NULL) {
DPRINTF(("ipip_input(): m_pullup() failed\n"));
- ipipstat.ipips_hdrops++;
+ ipipstat_inc(ipips_hdrops);
return IPPROTO_DONE;
}
}
@@ -229,7 +236,7 @@ ipip_input(struct mbuf **mp, int *offp,
ECN_ALLOWED_IPSEC : ECN_ALLOWED;
if (!ip_ecn_egress(mode, &otos, &ipo->ip_tos)) {
DPRINTF(("ipip_input(): ip_ecn_egress() failed"));
- ipipstat.ipips_pdrops++;
+ ipipstat_inc(ipips_pdrops);
m_freem(m);
return IPPROTO_DONE;
}
@@ -249,7 +256,7 @@ ipip_input(struct mbuf **mp, int *offp,
itos = (ntohl(ip6->ip6_flow) >> 20) & 0xff;
if (!ip_ecn_egress(ECN_ALLOWED, &otos, &itos)) {
DPRINTF(("ipip_input(): ip_ecn_egress() failed"));
- ipipstat.ipips_pdrops++;
+ ipipstat_inc(ipips_pdrops);
m_freem(m);
return IPPROTO_DONE;
}
@@ -291,7 +298,7 @@ ipip_input(struct mbuf **mp, int *offp,
rt = rtalloc((struct sockaddr *)&ss, 0,
m->m_pkthdr.ph_rtableid);
if ((rt != NULL) && (rt->rt_flags & RTF_LOCAL)) {
- ipipstat.ipips_spoof++;
+ ipipstat_inc(ipips_spoof);
m_freem(m);
rtfree(rt);
return IPPROTO_DONE;
@@ -302,7 +309,7 @@ ipip_input(struct mbuf **mp, int *offp,
}
/* Statistics */
- ipipstat.ipips_ibytes += m->m_pkthdr.len - iphlen;
+ ipipstat_add(ipips_ibytes, m->m_pkthdr.len - iphlen);
/*
* Interface pointer stays the same; if no IPsec processing has
@@ -336,7 +343,7 @@ ipip_input(struct mbuf **mp, int *offp,
#endif
if (niq_enqueue(ifq, m) != 0) {
- ipipstat.ipips_qfull++;
+ ipipstat_inc(ipips_qfull);
DPRINTF(("ipip_input(): packet dropped because of full "
"queue\n"));
}
@@ -375,7 +382,7 @@ ipip_output(struct mbuf *m, struct tdb *
ipsp_address(&tdb->tdb_dst, buf, sizeof(buf)),
ntohl(tdb->tdb_spi)));
- ipipstat.ipips_unspec++;
+ ipipstat_inc(ipips_unspec);
m_freem(m);
*mp = NULL;
return EINVAL;
@@ -384,7 +391,7 @@ ipip_output(struct mbuf *m, struct tdb *
M_PREPEND(m, sizeof(struct ip), M_DONTWAIT);
if (m == NULL) {
DPRINTF(("ipip_output(): M_PREPEND failed\n"));
- ipipstat.ipips_hdrops++;
+ ipipstat_inc(ipips_hdrops);
*mp = NULL;
return ENOBUFS;
}
@@ -441,7 +448,7 @@ ipip_output(struct mbuf *m, struct tdb *
else {
m_freem(m);
*mp = NULL;
- ipipstat.ipips_family++;
+ ipipstat_inc(ipips_family);
return EAFNOSUPPORT;
}
@@ -461,7 +468,7 @@ ipip_output(struct mbuf *m, struct tdb *
ipsp_address(&tdb->tdb_dst, buf, sizeof(buf)),
ntohl(tdb->tdb_spi)));
- ipipstat.ipips_unspec++;
+ ipipstat_inc(ipips_unspec);
m_freem(m);
*mp = NULL;
return ENOBUFS;
@@ -480,7 +487,7 @@ ipip_output(struct mbuf *m, struct tdb *
M_PREPEND(m, sizeof(struct ip6_hdr), M_DONTWAIT);
if (m == NULL) {
DPRINTF(("ipip_output(): M_PREPEND failed\n"));
- ipipstat.ipips_hdrops++;
+ ipipstat_inc(ipips_hdrops);
*mp = NULL;
return ENOBUFS;
}
@@ -518,7 +525,7 @@ ipip_output(struct mbuf *m, struct tdb *
} else {
m_freem(m);
*mp = NULL;
- ipipstat.ipips_family++;
+ ipipstat_inc(ipips_family);
return EAFNOSUPPORT;
}
@@ -533,11 +540,11 @@ ipip_output(struct mbuf *m, struct tdb *
tdb->tdb_dst.sa.sa_family));
m_freem(m);
*mp = NULL;
- ipipstat.ipips_family++;
+ ipipstat_inc(ipips_family);
return EAFNOSUPPORT;
}
- ipipstat.ipips_opackets++;
+ ipipstat_inc(ipips_opackets);
*mp = m;
if (tdb->tdb_dst.sa.sa_family == AF_INET) {
@@ -545,7 +552,7 @@ ipip_output(struct mbuf *m, struct tdb *
tdb->tdb_cur_bytes +=
m->m_pkthdr.len - sizeof(struct ip);
- ipipstat.ipips_obytes += m->m_pkthdr.len - sizeof(struct ip);
+ ipipstat_add(ipips_obytes, m->m_pkthdr.len - sizeof(struct ip));
}
#ifdef INET6
@@ -554,8 +561,8 @@ ipip_output(struct mbuf *m, struct tdb *
tdb->tdb_cur_bytes +=
m->m_pkthdr.len - sizeof(struct ip6_hdr);
- ipipstat.ipips_obytes +=
- m->m_pkthdr.len - sizeof(struct ip6_hdr);
+ ipipstat_add(ipips_obytes,
+ m->m_pkthdr.len - sizeof(struct ip6_hdr));
}
#endif /* INET6 */
@@ -592,6 +599,17 @@ ipe4_input(struct mbuf *m, int hlen, int
#endif /* IPSEC */
int
+ipip_sysctl_ipipstat(void *oldp, size_t *oldlenp, void *newp)
+{
+ struct ipipstat ipipstat;
+
+ CTASSERT(sizeof(ipipstat) == (ipips_ncounters * sizeof(uint64_t)));
+ counters_read(ipipcounters, (uint64_t *)&ipipstat, ipips_ncounters);
+ return (sysctl_rdstruct(oldp, oldlenp, newp,
+ &ipipstat, sizeof(ipipstat)));
+}
+
+int
ipip_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen)
{
@@ -603,10 +621,7 @@ ipip_sysctl(int *name, u_int namelen, vo
case IPIPCTL_ALLOW:
return (sysctl_int(oldp, oldlenp, newp, newlen, &ipip_allow));
case IPIPCTL_STATS:
- if (newp != NULL)
- return (EPERM);
- return (sysctl_struct(oldp, oldlenp, newp, newlen,
- &ipipstat, sizeof(ipipstat)));
+ return (ipip_sysctl_ipipstat(oldp, oldlenp, newp));
default:
return (ENOPROTOOPT);
}
Index: netinet/ip_ipip.h
===================================================================
RCS file: /d/cvs/src/sys/netinet/ip_ipip.h,v
retrieving revision 1.7
diff -u -p -r1.7 ip_ipip.h
--- netinet/ip_ipip.h 20 Feb 2017 17:04:25 -0000 1.7
+++ netinet/ip_ipip.h 7 Mar 2017 14:20:17 -0000
@@ -73,9 +73,39 @@ struct ipipstat {
}
#ifdef _KERNEL
+
+#include <sys/percpu.h>
+
+enum ipipstat_counters {
+ ipips_ipackets,
+ ipips_opackets,
+ ipips_hdrops,
+ ipips_qfull,
+ ipips_ibytes,
+ ipips_obytes,
+ ipips_pdrops,
+ ipips_spoof,
+ ipips_family,
+ ipips_unspec,
+ ipips_ncounters
+};
+
+extern struct cpumem *ipipcounters;
+
+static inline void
+ipipstat_inc(enum ipipstat_counters c)
+{
+ counters_inc(ipipcounters, c);
+}
+
+static inline void
+ipipstat_add(enum ipipstat_counters c, uint64_t v)
+{
+ counters_add(ipipcounters, c, v);
+}
+
int ipip_sysctl(int *, u_int, void *, size_t *, void *, size_t);
extern int ipip_allow;
-extern struct ipipstat ipipstat;
#endif /* _KERNEL */
#endif /* _NETINET_IPIP_H_ */
--
jca | PGP : 0x1524E7EE / 5135 92C1 AD36 5293 2BDF DDCC 0DFA 74AE 1524 E7EE
