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Axe TCP_RESTRICT_RST. It was never a particularly good idea except for a few

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very specific scenarios, and now that we have had net.inet.tcp.blackhole for
quite some time there is really no reason to use it any more.

(last of three commits)
This commit is contained in:
Dag-Erling Smørgrav 2001-03-19 22:09:00 +00:00
parent cc084f7587
commit c59319bf1a
2 changed files with 2 additions and 24 deletions
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13
sys/netinet/tcp_input.c
View File

@ -132,12 +132,6 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, drop_synfin, CTLFLAG_RW,
&drop_synfin, 0, "Drop TCP packets with SYN+FIN set");
#endif
#ifdef TCP_RESTRICT_RST
static int restrict_rst = 0;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, restrict_rst, CTLFLAG_RW,
&restrict_rst, 0, "Restrict RST emission");
#endif
struct inpcbhead tcb;
#define tcb6 tcb /* for KAME src sync over BSD*'s */
struct inpcbinfo tcbinfo;
@ -2303,13 +2297,8 @@ tcp_input(m, off0, proto)
/* IPv6 anycast check is done at tcp6_input() */
/*
* Perform bandwidth limiting (and RST blocking
* if kernel is so configured.)
* Perform bandwidth limiting.
*/
#ifdef TCP_RESTRICT_RST
if (restrict_rst)
goto drop;
#endif
if (badport_bandlim(rstreason) < 0)
goto drop;

13
sys/netinet/tcp_reass.c
View File

@ -132,12 +132,6 @@ SYSCTL_INT(_net_inet_tcp, OID_AUTO, drop_synfin, CTLFLAG_RW,
&drop_synfin, 0, "Drop TCP packets with SYN+FIN set");
#endif
#ifdef TCP_RESTRICT_RST
static int restrict_rst = 0;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, restrict_rst, CTLFLAG_RW,
&restrict_rst, 0, "Restrict RST emission");
#endif
struct inpcbhead tcb;
#define tcb6 tcb /* for KAME src sync over BSD*'s */
struct inpcbinfo tcbinfo;
@ -2303,13 +2297,8 @@ tcp_input(m, off0, proto)
/* IPv6 anycast check is done at tcp6_input() */
/*
* Perform bandwidth limiting (and RST blocking
* if kernel is so configured.)
* Perform bandwidth limiting.
*/
#ifdef TCP_RESTRICT_RST
if (restrict_rst)
goto drop;
#endif
if (badport_bandlim(rstreason) < 0)
goto drop;