diff options
| author | Hiroki Sato <hrs@FreeBSD.org> | 2020-03-07 08:41:10 +0000 |
|---|---|---|
| committer | Hiroki Sato <hrs@FreeBSD.org> | 2020-03-07 08:41:10 +0000 |
| commit | d726e6331b4047efb3737c0e3ecdd13b900df2e8 (patch) | |
| tree | cfe9497a2dc3b4d9d73a5e25e9d2f2e7defc6aff /sys/netinet/igmp.c | |
| parent | dc0a7e1390a86e2cd43115f25d7ad1995183707c (diff) | |
| download | src-test2-d726e6331b4047efb3737c0e3ecdd13b900df2e8.tar.gz src-test2-d726e6331b4047efb3737c0e3ecdd13b900df2e8.zip | |
Notes
Diffstat (limited to 'sys/netinet/igmp.c')
| -rw-r--r-- | sys/netinet/igmp.c | 59 |
1 files changed, 57 insertions, 2 deletions
diff --git a/sys/netinet/igmp.c b/sys/netinet/igmp.c index 2a08e73317a2..d619cfc5160e 100644 --- a/sys/netinet/igmp.c +++ b/sys/netinet/igmp.c @@ -145,6 +145,7 @@ static void igmp_v3_suppress_group_record(struct in_multi *); static int sysctl_igmp_default_version(SYSCTL_HANDLER_ARGS); static int sysctl_igmp_gsr(SYSCTL_HANDLER_ARGS); static int sysctl_igmp_ifinfo(SYSCTL_HANDLER_ARGS); +static int sysctl_igmp_stat(SYSCTL_HANDLER_ARGS); static const struct netisr_handler igmp_nh = { .nh_name = "igmp", @@ -260,8 +261,9 @@ VNET_DEFINE_STATIC(int, igmp_default_version) = IGMP_VERSION_3; /* * Virtualized sysctls. */ -SYSCTL_STRUCT(_net_inet_igmp, IGMPCTL_STATS, stats, CTLFLAG_VNET | CTLFLAG_RW, - &VNET_NAME(igmpstat), igmpstat, ""); +SYSCTL_PROC(_net_inet_igmp, IGMPCTL_STATS, stats, + CTLFLAG_VNET | CTLTYPE_STRUCT | CTLFLAG_RW | CTLFLAG_MPSAFE, + &VNET_NAME(igmpstat), 0, sysctl_igmp_stat, "S,igmpstat", ""); SYSCTL_INT(_net_inet_igmp, OID_AUTO, recvifkludge, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(igmp_recvifkludge), 0, "Rewrite IGMPv1/v2 reports from 0.0.0.0 to contain subnet address"); @@ -336,6 +338,59 @@ igmp_restore_context(struct mbuf *m) } /* + * IGMP statistics. + */ +static int +sysctl_igmp_stat(SYSCTL_HANDLER_ARGS) +{ + struct igmpstat igps0; + int error; + char *p; + + error = sysctl_wire_old_buffer(req, sizeof(V_igmpstat)); + if (error) + return (error); + + if (req->oldptr != NULL) { + if (req->oldlen < sizeof(V_igmpstat)) + error = ENOMEM; + else + error = SYSCTL_OUT(req, &V_igmpstat, + sizeof(V_igmpstat)); + } else + req->validlen = sizeof(V_igmpstat); + if (error) + goto out; + if (req->newptr != NULL) { + if (req->newlen < sizeof(V_igmpstat)) + error = ENOMEM; + else + error = SYSCTL_IN(req, &igps0, + sizeof(igps0)); + if (error) + goto out; + /* + * igps0 must be "all zero". + */ + p = (char *)&igps0; + while (*p == '\0' && p < (char *)&igps0 + sizeof(igps0)) + p++; + if (p != (char *)&igps0 + sizeof(igps0)) { + error = EINVAL; + goto out; + } + /* + * Avoid overwrite of the version and length field. + */ + igps0.igps_version = V_igmpstat.igps_version; + igps0.igps_len = V_igmpstat.igps_len; + bcopy(&igps0, &V_igmpstat, sizeof(V_igmpstat)); + } +out: + return (error); +} + +/* * Retrieve or set default IGMP version. * * VIMAGE: Assume curvnet set by caller. |