Date: Fri, 15 Jul 2016 17:09:30 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r302906 - head/sys/netinet6 Message-ID: <201607151709.u6FH9UqO035545@repo.freebsd.org>
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Author: ae Date: Fri Jul 15 17:09:30 2016 New Revision: 302906 URL: https://svnweb.freebsd.org/changeset/base/302906 Log: Add net.inet6.ip6.intr_queue_maxlen sysctl. It can be used to change netisr queue limit for IPv6 at runtime. Obtained from: Yandex LLC MFC after: 2 weeks Sponsored by: Yandex LLC Modified: head/sys/netinet6/in6.h head/sys/netinet6/ip6_input.c Modified: head/sys/netinet6/in6.h ============================================================================== --- head/sys/netinet6/in6.h Fri Jul 15 16:37:36 2016 (r302905) +++ head/sys/netinet6/in6.h Fri Jul 15 17:09:30 2016 (r302906) @@ -637,7 +637,10 @@ struct ip6_mtuinfo { * receiving IF. */ #define IPV6CTL_RFC6204W3 50 /* Accept defroute even when forwarding enabled */ -#define IPV6CTL_MAXID 51 +#define IPV6CTL_INTRQMAXLEN 51 /* max length of IPv6 netisr queue */ +#define IPV6CTL_INTRDQMAXLEN 52 /* max length of direct IPv6 netisr + * queue */ +#define IPV6CTL_MAXID 53 #endif /* __BSD_VISIBLE */ /* Modified: head/sys/netinet6/ip6_input.c ============================================================================== --- head/sys/netinet6/ip6_input.c Fri Jul 15 16:37:36 2016 (r302905) +++ head/sys/netinet6/ip6_input.c Fri Jul 15 17:09:30 2016 (r302906) @@ -86,6 +86,7 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/rmlock.h> #include <sys/syslog.h> +#include <sys/sysctl.h> #include <net/if.h> #include <net/if_var.h> @@ -145,6 +146,24 @@ static struct netisr_handler ip6_nh = { #endif }; +static int +sysctl_netinet6_intr_queue_maxlen(SYSCTL_HANDLER_ARGS) +{ + int error, qlimit; + + netisr_getqlimit(&ip6_nh, &qlimit); + error = sysctl_handle_int(oidp, &qlimit, 0, req); + if (error || !req->newptr) + return (error); + if (qlimit < 1) + return (EINVAL); + return (netisr_setqlimit(&ip6_nh, qlimit)); +} +SYSCTL_DECL(_net_inet6_ip6); +SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_INTRQMAXLEN, intr_queue_maxlen, + CTLTYPE_INT|CTLFLAG_RW, 0, 0, sysctl_netinet6_intr_queue_maxlen, "I", + "Maximum size of the IPv6 input queue"); + #ifdef RSS static struct netisr_handler ip6_direct_nh = { .nh_name = "ip6_direct", @@ -154,6 +173,24 @@ static struct netisr_handler ip6_direct_ .nh_policy = NETISR_POLICY_CPU, .nh_dispatch = NETISR_DISPATCH_HYBRID, }; + +static int +sysctl_netinet6_intr_direct_queue_maxlen(SYSCTL_HANDLER_ARGS) +{ + int error, qlimit; + + netisr_getqlimit(&ip6_direct_nh, &qlimit); + error = sysctl_handle_int(oidp, &qlimit, 0, req); + if (error || !req->newptr) + return (error); + if (qlimit < 1) + return (EINVAL); + return (netisr_setqlimit(&ip6_direct_nh, qlimit)); +} +SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_INTRDQMAXLEN, intr_direct_queue_maxlen, + CTLTYPE_INT|CTLFLAG_RW, 0, 0, sysctl_netinet6_intr_direct_queue_maxlen, + "I", "Maximum size of the IPv6 direct input queue"); + #endif VNET_DEFINE(struct pfil_head, inet6_pfil_hook);
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