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Many network stack subsystems use a single global data structure to hold

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all pertinent statatistics for the subsystem.  These structures are
sometimes "borrowed" by kernel modules that require a place to store
statistics for similar events.

Add KPI accessor functions for statistics structures referenced by kernel
modules so that they no longer encode certain specifics of how the data
structures are named and stored.  This change is intended to make it
easier to move to per-CPU network stats following 8.0-RELEASE.

The following modules are affected by this change:

      if_bridge
      if_cxgb
      if_gif
      ip_mroute
      ipdivert
      pf

In practice, most of these statistics consumers should, in fact, maintain
their own statistics data structures rather than borrowing structures
from the base network stack.  However, that change is too agressive for
this point in the release cycle.

Reviewed by:	bz
Approved by:	re (kib)
This commit is contained in:
Robert Watson 2009-08-02 19:43:32 +00:00
parent 9734411552
commit 315e3e38fa
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=196039
15 changed files with 167 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
sys/contrib/pf/net/pf.c
View File

@ -6141,7 +6141,7 @@ pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
if (r->rt == PF_FASTROUTE) {
in_rtalloc(ro, 0);
if (ro->ro_rt == 0) {
IPSTAT_INC(ips_noroute);
KMOD_IPSTAT_INC(ips_noroute);
goto bad;
}
@ -6272,16 +6272,16 @@ pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
if ((ifp->if_capabilities & IFCAP_CSUM_IPv4) &&
ifp->if_bridge == NULL) {
m0->m_pkthdr.csum_flags |= M_IPV4_CSUM_OUT;
IPSTAT_INC(ips_outhwcsum);
KMOD_IPSTAT_INC(ips_outhwcsum);
} else {
ip->ip_sum = 0;
ip->ip_sum = in_cksum(m0, ip->ip_hl << 2);
}
/* Update relevant hardware checksum stats for TCP/UDP */
if (m0->m_pkthdr.csum_flags & M_TCPV4_CSUM_OUT)
TCPSTAT_INC(tcpstat.tcps_outhwcsum);
KMOD_TCPSTAT_INC(tcps_outhwcsum);
else if (m0->m_pkthdr.csum_flags & M_UDPV4_CSUM_OUT)
UDPSTAT_INC(udps_outhwcsum);
KMOD_UDPSTAT_INC(udps_outhwcsum);
error = (*ifp->if_output)(ifp, m0, sintosa(dst), NULL);
goto done;
}
@ -6291,7 +6291,7 @@ pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
* Must be able to put at least 8 bytes per fragment.
*/
if (ip->ip_off & htons(IP_DF)) {
IPSTAT_INC(ips_cantfrag);
KMOD_IPSTAT_INC(ips_cantfrag);
if (r->rt != PF_DUPTO) {
#ifdef __FreeBSD__
/* icmp_error() expects host byte ordering */
@ -6348,7 +6348,7 @@ pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
}
if (error == 0)
IPSTAT_INC(ips_fragmented);
KMOD_IPSTAT_INC(ips_fragmented);
done:
if (r->rt != PF_DUPTO)
@ -6622,23 +6622,23 @@ pf_check_proto_cksum(struct mbuf *m, int off, int len, u_int8_t p, sa_family_t a
switch (p) {
case IPPROTO_TCP:
{
TCPSTAT_INC(tcps_rcvbadsum);
KMOD_TCPSTAT_INC(tcps_rcvbadsum);
break;
}
case IPPROTO_UDP:
{
UDPSTAT_INC(udps_badsum);
KMOD_UDPSTAT_INC(udps_badsum);
break;
}
case IPPROTO_ICMP:
{
ICMPSTAT_INC(icps_checksum);
KMOD_ICMPSTAT_INC(icps_checksum);
break;
}
#ifdef INET6
case IPPROTO_ICMPV6:
{
ICMP6STAT_INC(icp6s_checksum);
KMOD_ICMP6STAT_INC(icp6s_checksum);
break;
}
#endif /* INET6 */
@ -6725,17 +6725,17 @@ pf_check_proto_cksum(struct mbuf *m, int off, int len, u_int8_t p,
m->m_pkthdr.csum_flags |= flag_bad;
switch (p) {
case IPPROTO_TCP:
TCPSTAT_INC(tcps_rcvbadsum);
KMOD_TCPSTAT_INC(tcps_rcvbadsum);
break;
case IPPROTO_UDP:
UDPSTAT_INC(udps_badsum);
KMOD_UDPSTAT_INC(udps_badsum);
break;
case IPPROTO_ICMP:
ICMPSTAT_INC(icps_checksum);
KMOD_ICMPSTAT_INC(icps_checksum);
break;
#ifdef INET6
case IPPROTO_ICMPV6:
ICMP6STAT_INC(icp6s_checksum);
KMOD_ICMP6STAT_INC(icp6s_checksum);
break;
#endif /* INET6 */
}

2
sys/dev/cxgb/ulp/tom/cxgb_cpl_io.c
View File

@ -3821,7 +3821,7 @@ socket_act_establish(struct socket *so, struct mbuf *m)
#endif
toep->tp_state = tp->t_state;
TCPSTAT_INC(tcps_connects);
KMOD_TCPSTAT_INC(tcps_connects);
}

18
sys/net/if_bridge.c
View File

@ -3244,12 +3244,12 @@ bridge_ip_checkbasic(struct mbuf **mp)
if ((m = m_copyup(m, sizeof(struct ip),
(max_linkhdr + 3) & ~3)) == NULL) {
/* XXXJRT new stat, please */
IPSTAT_INC(ips_toosmall);
KMOD_IPSTAT_INC(ips_toosmall);
goto bad;
}
} else if (__predict_false(m->m_len < sizeof (struct ip))) {
if ((m = m_pullup(m, sizeof (struct ip))) == NULL) {
IPSTAT_INC(ips_toosmall);
KMOD_IPSTAT_INC(ips_toosmall);
goto bad;
}
}
@ -3257,17 +3257,17 @@ bridge_ip_checkbasic(struct mbuf **mp)
if (ip == NULL) goto bad;
if (ip->ip_v != IPVERSION) {
IPSTAT_INC(ips_badvers);
KMOD_IPSTAT_INC(ips_badvers);
goto bad;
}
hlen = ip->ip_hl << 2;
if (hlen < sizeof(struct ip)) { /* minimum header length */
IPSTAT_INC(ips_badhlen);
KMOD_IPSTAT_INC(ips_badhlen);
goto bad;
}
if (hlen > m->m_len) {
if ((m = m_pullup(m, hlen)) == 0) {
IPSTAT_INC(ips_badhlen);
KMOD_IPSTAT_INC(ips_badhlen);
goto bad;
}
ip = mtod(m, struct ip *);
@ -3284,7 +3284,7 @@ bridge_ip_checkbasic(struct mbuf **mp)
}
}
if (sum) {
IPSTAT_INC(ips_badsum);
KMOD_IPSTAT_INC(ips_badsum);
goto bad;
}
@ -3295,7 +3295,7 @@ bridge_ip_checkbasic(struct mbuf **mp)
* Check for additional length bogosity
*/
if (len < hlen) {
IPSTAT_INC(ips_badlen);
KMOD_IPSTAT_INC(ips_badlen);
goto bad;
}
@ -3305,7 +3305,7 @@ bridge_ip_checkbasic(struct mbuf **mp)
* Drop packet if shorter than we expect.
*/
if (m->m_pkthdr.len < len) {
IPSTAT_INC(ips_tooshort);
KMOD_IPSTAT_INC(ips_tooshort);
goto bad;
}
@ -3418,7 +3418,7 @@ bridge_fragment(struct ifnet *ifp, struct mbuf *m, struct ether_header *eh,
}
if (error == 0)
IPSTAT_INC(ips_fragmented);
KMOD_IPSTAT_INC(ips_fragmented);
return (error);

11
sys/netinet/icmp6.h
View File

@ -600,8 +600,19 @@ struct icmp6stat {
};
#ifdef _KERNEL
/*
* In-kernel consumers can use these accessor macros directly to update
* stats.
*/
#define ICMP6STAT_ADD(name, val) V_icmp6stat.name += (val)
#define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1)
/*
* Kernel module consumers must use this accessor macro.
*/
void kmod_icmp6stat_inc(int statnum);
#define KMOD_ICMP6STAT_INC(name) \
kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(u_quad_t))
#endif
/*

11
sys/netinet/icmp_var.h
View File

@ -58,8 +58,19 @@ struct icmpstat {
};
#ifdef _KERNEL
/*
* In-kernel consumers can use these accessor macros directly to update
* stats.
*/
#define ICMPSTAT_ADD(name, val) V_icmpstat.name += (val)
#define ICMPSTAT_INC(name) ICMPSTAT_ADD(name, 1)
/*
* Kernel module consumers must use this accessor macro.
*/
void kmod_icmpstat_inc(int statnum);
#define KMOD_ICMPSTAT_INC(name) \
kmod_icmpstat_inc(offsetof(struct icmpstat, name) / sizeof(u_long))
#endif
/*

6
sys/netinet/in_gif.c
View File

@ -281,14 +281,14 @@ in_gif_input(struct mbuf *m, int off)
sc = (struct gif_softc *)encap_getarg(m);
if (sc == NULL) {
m_freem(m);
IPSTAT_INC(ips_nogif);
KMOD_IPSTAT_INC(ips_nogif);
return;
}
gifp = GIF2IFP(sc);
if (gifp == NULL || (gifp->if_flags & IFF_UP) == 0) {
m_freem(m);
IPSTAT_INC(ips_nogif);
KMOD_IPSTAT_INC(ips_nogif);
return;
}
@ -348,7 +348,7 @@ in_gif_input(struct mbuf *m, int off)
break;
default:
IPSTAT_INC(ips_nogif);
KMOD_IPSTAT_INC(ips_nogif);
m_freem(m);
return;
}

10
sys/netinet/ip_divert.c
View File

@ -186,7 +186,7 @@ void
div_input(struct mbuf *m, int off)
{
IPSTAT_INC(ips_noproto);
KMOD_IPSTAT_INC(ips_noproto);
m_freem(m);
}
@ -310,8 +310,8 @@ divert_packet(struct mbuf *m, int incoming)
INP_INFO_RUNLOCK(&V_divcbinfo);
if (sa == NULL) {
m_freem(m);
IPSTAT_INC(ips_noproto);
IPSTAT_DEC(ips_delivered);
KMOD_IPSTAT_INC(ips_noproto);
KMOD_IPSTAT_DEC(ips_delivered);
}
}
@ -396,7 +396,7 @@ div_output(struct socket *so, struct mbuf *m, struct sockaddr_in *sin,
ip->ip_off = ntohs(ip->ip_off);
/* Send packet to output processing */
IPSTAT_INC(ips_rawout); /* XXX */
KMOD_IPSTAT_INC(ips_rawout); /* XXX */
#ifdef MAC
mac_inpcb_create_mbuf(inp, m);
@ -567,7 +567,7 @@ div_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
/* Packet must have a header (but that's about it) */
if (m->m_len < sizeof (struct ip) &&
(m = m_pullup(m, sizeof (struct ip))) == 0) {
IPSTAT_INC(ips_toosmall);
KMOD_IPSTAT_INC(ips_toosmall);
m_freem(m);
return EINVAL;
}

14
sys/netinet/ip_icmp.c
View File

@ -171,6 +171,20 @@ icmp_init(void)
V_icmpbmcastecho = 0;
}
/*
* Kernel module interface for updating icmpstat. The argument is an index
* into icmpstat treated as an array of u_long. While this encodes the
* general layout of icmpstat into the caller, it doesn't encode its
* location, so that future changes to add, for example, per-CPU stats
* support won't cause binary compatibility problems for kernel modules.
*/
void
kmod_icmpstat_inc(int statnum)
{
(*((u_long *)&V_icmpstat + statnum))++;
}
/*
* Generate an error packet of type error
* in response to bad packet ip.

21
sys/netinet/ip_input.c
View File

@ -235,6 +235,27 @@ VNET_DEFINE(int, fw_one_pass) = 1;
static void ip_freef(struct ipqhead *, struct ipq *);
/*
* Kernel module interface for updating ipstat. The argument is an index
* into ipstat treated as an array of u_long. While this encodes the general
* layout of ipstat into the caller, it doesn't encode its location, so that
* future changes to add, for example, per-CPU stats support won't cause
* binary compatibility problems for kernel modules.
*/
void
kmod_ipstat_inc(int statnum)
{
(*((u_long *)&V_ipstat + statnum))++;
}
void
kmod_ipstat_dec(int statnum)
{
(*((u_long *)&V_ipstat + statnum))--;
}
static int
sysctl_netinet_intr_queue_maxlen(SYSCTL_HANDLER_ARGS)
{

14
sys/netinet/ip_var.h
View File

@ -131,11 +131,25 @@ struct ipstat {
#include <net/vnet.h>
/*
* In-kernel consumers can use these accessor macros directly to update
* stats.
*/
#define IPSTAT_ADD(name, val) V_ipstat.name += (val)
#define IPSTAT_SUB(name, val) V_ipstat.name -= (val)
#define IPSTAT_INC(name) IPSTAT_ADD(name, 1)
#define IPSTAT_DEC(name) IPSTAT_SUB(name, 1)
/*
* Kernel module consumers must use this accessor macro.
*/
void kmod_ipstat_inc(int statnum);
#define KMOD_IPSTAT_INC(name) \
kmod_ipstat_inc(offsetof(struct ipstat, name) / sizeof(u_long))
void kmod_ipstat_dec(int statnum);
#define KMOD_IPSTAT_DEC(name) \
kmod_ipstat_dec(offsetof(struct ipstat, name) / sizeof(u_long))
/* flags passed to ip_output as last parameter */
#define IP_FORWARDING 0x1 /* most of ip header exists */
#define IP_RAWOUTPUT 0x2 /* raw ip header exists */

14
sys/netinet/tcp_input.c
View File

@ -217,6 +217,20 @@ static void tcp_newreno_partial_ack(struct tcpcb *, struct tcphdr *);
static void inline
tcp_congestion_exp(struct tcpcb *);
/*
* Kernel module interface for updating tcpstat. The argument is an index
* into tcpstat treated as an array of u_long. While this encodes the
* general layout of tcpstat into the caller, it doesn't encode its location,
* so that future changes to add, for example, per-CPU stats support won't
* cause binary compatibility problems for kernel modules.
*/
void
kmod_tcpstat_inc(int statnum)
{
(*((u_long *)&V_tcpstat + statnum))++;
}
static void inline
tcp_congestion_exp(struct tcpcb *tp)
{

11
sys/netinet/tcp_var.h
View File

@ -474,8 +474,19 @@ struct tcpstat {
};
#ifdef _KERNEL
/*
* In-kernel consumers can use these accessor macros directly to update
* stats.
*/
#define TCPSTAT_ADD(name, val) V_tcpstat.name += (val)
#define TCPSTAT_INC(name) TCPSTAT_ADD(name, 1)
/*
* Kernel module consumers must use this accessor macro.
*/
void kmod_tcpstat_inc(int statnum);
#define KMOD_TCPSTAT_INC(name) \
kmod_tcpstat_inc(offsetof(struct tcpstat, name) / sizeof(u_long))
#endif
/*

14
sys/netinet/udp_usrreq.c
View File

@ -203,6 +203,20 @@ udp_init(void)
EVENTHANDLER_PRI_ANY);
}
/*
* Kernel module interface for updating udpstat. The argument is an index
* into udpstat treated as an array of u_long. While this encodes the
* general layout of udpstat into the caller, it doesn't encode its location,
* so that future changes to add, for example, per-CPU stats support won't
* cause binary compatibility problems for kernel modules.
*/
void
kmod_udpstat_inc(int statnum)
{
(*((u_long *)&V_udpstat + statnum))++;
}
int
udp_newudpcb(struct inpcb *inp)
{

11
sys/netinet/udp_var.h
View File

@ -91,8 +91,19 @@ struct udpstat {
};
#ifdef _KERNEL
/*
* In-kernel consumers can use these accessor macros directly to update
* stats.
*/
#define UDPSTAT_ADD(name, val) V_udpstat.name += (val)
#define UDPSTAT_INC(name) UDPSTAT_ADD(name, 1)
/*
* Kernel module consumers must use this accessor macro.
*/
void kmod_udpstat_inc(int statnum);
#define KMOD_UDPSTAT_INC(name) \
kmod_udpstat_inc(offsetof(struct udpstat, name) / sizeof(u_long))
#endif
/*

14
sys/netinet6/icmp6.c
View File

@ -152,6 +152,20 @@ icmp6_init(void)
V_icmp6errpps_count = 0;
}
/*
* Kernel module interface for updating icmp6stat. The argument is an index
* into icmp6stat treated as an array of u_quad_t. While this encodes the
* general layout of icmp6stat into the caller, it doesn't encode its
* location, so that future changes to add, for example, per-CPU stats
* support won't cause binary compatibility problems for kernel modules.
*/
void
kmod_icmp6stat_inc(int statnum)
{
(*((u_quad_t *)&V_icmp6stat + statnum))++;
}
static void
icmp6_errcount(struct icmp6errstat *stat, int type, int code)
{