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Add net.inet6.ip6.intr_queue_maxlen sysctl. It can be used to

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change netisr queue limit for IPv6 at runtime.

Obtained from:	Yandex LLC
MFC after:	2 weeks
Sponsored by:	Yandex LLC
This commit is contained in:
Andrey V. Elsukov 2016-07-15 17:09:30 +00:00
parent 282d1dd7ff
commit 7aeccebc0d
2 changed files with 41 additions and 1 deletions
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5
sys/netinet6/in6.h
View File

@ -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 */
/*

37
sys/netinet6/ip6_input.c
View File

@ -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 = {
.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);