Author: tuexen
Date: Mon Jun 18 17:11:24 2012
New Revision: 237230
URL: http://svn.freebsd.org/changeset/base/237230
Log:
Add rate limitation for SCTP OOTB responses.
MFC after: 3 days
Modified:
head/sys/netinet/icmp_var.h
head/sys/netinet/ip_icmp.c
head/sys/netinet/sctp_input.c
Modified: head/sys/netinet/icmp_var.h
==============================================================================
--- head/sys/netinet/icmp_var.h Mon Jun 18 17:09:39 2012 (r237229)
+++ head/sys/netinet/icmp_var.h Mon Jun 18 17:11:24 2012 (r237230)
@@ -102,7 +102,8 @@ extern int badport_bandlim(int);
#define BANDLIM_RST_CLOSEDPORT 3 /* No connection, and no listeners */
#define BANDLIM_RST_OPENPORT 4 /* No connection, listener */
#define BANDLIM_ICMP6_UNREACH 5
-#define BANDLIM_MAX 5
+#define BANDLIM_SCTP_OOTB 6
+#define BANDLIM_MAX 6
#endif
#endif
Modified: head/sys/netinet/ip_icmp.c
==============================================================================
--- head/sys/netinet/ip_icmp.c Mon Jun 18 17:09:39 2012 (r237229)
+++ head/sys/netinet/ip_icmp.c Mon Jun 18 17:11:24 2012 (r237230)
@@ -965,7 +965,8 @@ badport_bandlim(int which)
{ "icmp tstamp response" },
{ "closed port RST response" },
{ "open port RST response" },
- { "icmp6 unreach response" }
+ { "icmp6 unreach response" },
+ { "sctp ootb response" }
};
/*
Modified: head/sys/netinet/sctp_input.c
==============================================================================
--- head/sys/netinet/sctp_input.c Mon Jun 18 17:09:39 2012
(r237229)
+++ head/sys/netinet/sctp_input.c Mon Jun 18 17:11:24 2012
(r237230)
@@ -6060,15 +6060,8 @@ sctp_skip_csum_4:
struct sctp_init_chunk *init_chk, chunk_buf;
SCTP_STAT_INCR(sctps_noport);
-#ifdef ICMP_BANDLIM
- /*
- * we use the bandwidth limiting to protect against sending
- * too many ABORTS all at once. In this case these count the
- * same as an ICMP message.
- */
- if (badport_bandlim(0) < 0)
+ if (badport_bandlim(BANDLIM_SCTP_OOTB) < 0)
goto bad;
-#endif /* ICMP_BANDLIM */
SCTPDBG(SCTP_DEBUG_INPUT1,
"Sending a ABORT from packet entry!\n");
if (ch->chunk_type == SCTP_INITIATION) {
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