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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