diff options
Diffstat (limited to 'sys/netinet/ip_icmp.c')
| -rw-r--r-- | sys/netinet/ip_icmp.c | 91 |
1 files changed, 1 insertions, 90 deletions
diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c index d4eb5ca816dd8..186b8e676774a 100644 --- a/sys/netinet/ip_icmp.c +++ b/sys/netinet/ip_icmp.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)ip_icmp.c 8.2 (Berkeley) 1/4/94 - * $Id: ip_icmp.c,v 1.32 1998/12/03 20:23:20 dillon Exp $ + * $Id: ip_icmp.c,v 1.30 1998/05/26 11:34:30 dg Exp $ */ #include <sys/param.h> @@ -69,33 +69,10 @@ static int icmpmaskrepl = 0; SYSCTL_INT(_net_inet_icmp, ICMPCTL_MASKREPL, maskrepl, CTLFLAG_RW, &icmpmaskrepl, 0, ""); -#ifdef ICMP_BANDLIM - -/* - * ICMP error-response bandwidth limiting sysctl. If not enabled, sysctl - * variable content is -1 and read-only. - */ - -static int icmplim = 100; -SYSCTL_INT(_net_inet_icmp, ICMPCTL_ICMPLIM, icmplim, CTLFLAG_RW, - &icmplim, 0, ""); -#else - -static int icmplim = -1; -SYSCTL_INT(_net_inet_icmp, ICMPCTL_ICMPLIM, icmplim, CTLFLAG_RD, - &icmplim, 0, ""); - -#endif - -/* - * ICMP broadcast echo sysctl - */ - static int icmpbmcastecho = 0; SYSCTL_INT(_net_inet_icmp, OID_AUTO, bmcastecho, CTLFLAG_RW, &icmpbmcastecho, 0, ""); - #ifdef ICMPPRINTFS int icmpprintfs = 0; #endif @@ -727,69 +704,3 @@ ip_next_mtu(mtu, dir) } } #endif - -#ifdef ICMP_BANDLIM - -/* - * badport_bandlim() - check for ICMP bandwidth limit - * - * Return 0 if it is ok to send an ICMP error response, -1 if we have - * hit our bandwidth limit and it is not ok. - * - * If icmplim is <= 0, the feature is disabled and 0 is returned. - * - * For now we separate the TCP and UDP subsystems w/ different 'which' - * values. We may eventually remove this separation (and simplify the - * code further). - * - * Note that the printing of the error message is delayed so we can - * properly print the icmp error rate that the system was trying to do - * (i.e. 22000/100 pps, etc...). This can cause long delays in printing - * the 'final' error, but it doesn't make sense to solve the printing - * delay with more complex code. - */ - -int -badport_bandlim(int which) -{ - static int lticks[2]; - static int lpackets[2]; - int dticks; - - /* - * Return ok status if feature disabled or argument out of - * ranage. - */ - - if (icmplim <= 0 || which >= 2 || which < 0) - return(0); - dticks = ticks - lticks[which]; - - /* - * reset stats when cumulative dt exceeds one second. - */ - - if ((unsigned int)dticks > hz) { - if (lpackets[which] > icmplim) { - printf("icmp-response bandwidth limit %d/%d pps\n", - lpackets[which], - icmplim - ); - } - lticks[which] = ticks; - lpackets[which] = 0; - } - - /* - * bump packet count - */ - - if (++lpackets[which] > icmplim) { - return(-1); - } - return(0); -} - -#endif - - |