git: 8338690a0a43 - main - ip_reass: provide sysctl MIB returning IP fragment TTL

The branch main has been updated by glebius:

URL: https://cgit.FreeBSD.org/src/commit/?id=8338690a0a43c8b11a382e2160f8eedb9aeecf91

commit 8338690a0a43c8b11a382e2160f8eedb9aeecf91
Author:     Gleb Smirnoff <glebius@FreeBSD.org>
AuthorDate: 2022-08-20 20:33:39 +0000
Commit:     Gleb Smirnoff <glebius@FreeBSD.org>
CommitDate: 2022-08-20 20:39:12 +0000

    ip_reass: provide sysctl MIB returning IP fragment TTL
    
    For now it is read-only, but eventually the cycle that goes over
    all fragments should be refactored and this MIB should also become
    read/write.
    
    This MIB will allow SNMP daemons to implement MIB-II ipReasmTimeout MIB
    straightfoward.  Right now net-snmp compilation is broken by 1922eb3e9c2.
    The base system bsnmpd is not broken just because it ignored PR_SLOWTIMO,
    and thus always returned incorrectly doubled value for ipReasmTimeout.
---
 sys/netinet/ip_reass.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/netinet/ip_reass.c b/sys/netinet/ip_reass.c
index 0420091e0a2a..e581e2e622c7 100644
--- a/sys/netinet/ip_reass.c
+++ b/sys/netinet/ip_reass.c
@@ -167,6 +167,10 @@ SYSCTL_PROC(_net_inet_ip, OID_AUTO, maxfragbucketsize,
     sysctl_maxfragbucketsize, "I",
     "Maximum number of IPv4 fragment reassembly queue entries per bucket");
 
+static u_int ipfragttl = IPFRAGTTL / 2;
+SYSCTL_UINT(_net_inet_ip, OID_AUTO, fragttl, CTLFLAG_RD, &ipfragttl,
+    IPFRAGTTL / 2, "IP fragment life time on reassembly queue");
+
 /*
  * Take incoming datagram fragment and try to reassemble it into
  * whole datagram.  If the argument is the first fragment or one