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frag6: export another counter read-only by sysctl

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Similar to the system global counter also export the per-VNET counter
"frag6_nfragpackets" detailing the current number of fragment packets
in this VNET's reassembly queues.
The read-only counter is helpful for in-VNET statistical monitoring and
for test-cases.

MFC after:	3 weeks
Sponsored by:	Netflix
This commit is contained in:
Bjoern A. Zeeb 2019-10-24 20:00:37 +00:00
parent dda02192f9
commit 53707abd41
1 changed files with 4 additions and 0 deletions
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4
sys/netinet6/frag6.c
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@ -202,6 +202,10 @@ SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
"Default maximum number of outstanding fragmented IPv6 packets. "
"A value of 0 means no fragmented packets will be accepted, while a "
"a value of -1 means no limit");
SYSCTL_UINT(_net_inet6_ip6, OID_AUTO, frag6_nfragpackets,
CTLFLAG_VNET | CTLFLAG_RD,
__DEVOLATILE(u_int *, &VNET_NAME(frag6_nfragpackets)), 0,
"Per-VNET number of IPv6 fragments across all reassembly queues.");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGSPERPACKET, maxfragsperpacket,
CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragsperpacket), 0,
"Maximum allowed number of fragments per packet");