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Simplify implementation of net.inet.tcp.reass.maxsegments and

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net.inet.tcp.reass.cursegments.

MFC after:	2 weeks
This commit is contained in:
Andre Oppermann 2012-10-28 17:59:46 +00:00
parent f62563d33c
commit aafa0b4164
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=242253
1 changed files with 11 additions and 17 deletions
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28
sys/netinet/tcp_reass.c
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@ -74,7 +74,6 @@ __FBSDID("$FreeBSD$");
#include <netinet/tcp_debug.h>
#endif /* TCPDEBUG */
static int tcp_reass_sysctl_maxseg(SYSCTL_HANDLER_ARGS);
static int tcp_reass_sysctl_qsize(SYSCTL_HANDLER_ARGS);
static SYSCTL_NODE(_net_inet_tcp, OID_AUTO, reass, CTLFLAG_RW, 0,
@ -82,16 +81,12 @@ static SYSCTL_NODE(_net_inet_tcp, OID_AUTO, reass, CTLFLAG_RW, 0,
static VNET_DEFINE(int, tcp_reass_maxseg) = 0;
#define V_tcp_reass_maxseg VNET(tcp_reass_maxseg)
SYSCTL_VNET_PROC(_net_inet_tcp_reass, OID_AUTO, maxsegments,
CTLTYPE_INT | CTLFLAG_RDTUN,
&VNET_NAME(tcp_reass_maxseg), 0, &tcp_reass_sysctl_maxseg, "I",
SYSCTL_VNET_INT(_net_inet_tcp_reass, OID_AUTO, maxsegments, CTLFLAG_RDTUN,
&VNET_NAME(tcp_reass_maxseg), 0,
"Global maximum number of TCP Segments in Reassembly Queue");
static VNET_DEFINE(int, tcp_reass_qsize) = 0;
#define V_tcp_reass_qsize VNET(tcp_reass_qsize)
SYSCTL_VNET_PROC(_net_inet_tcp_reass, OID_AUTO, cursegments,
CTLTYPE_INT | CTLFLAG_RD,
&VNET_NAME(tcp_reass_qsize), 0, &tcp_reass_sysctl_qsize, "I",
(CTLTYPE_INT | CTLFLAG_RD), NULL, 0, &tcp_reass_sysctl_qsize, "I",
"Global number of TCP Segments currently in Reassembly Queue");
static VNET_DEFINE(int, tcp_reass_overflows) = 0;
@ -109,8 +104,10 @@ static void
tcp_reass_zone_change(void *tag)
{
/* Set the zone limit and read back the effective value. */
V_tcp_reass_maxseg = nmbclusters / 16;
uma_zone_set_max(V_tcp_reass_zone, V_tcp_reass_maxseg);
V_tcp_reass_maxseg = uma_zone_get_max(V_tcp_reass_zone);
}
void
@ -122,7 +119,9 @@ tcp_reass_init(void)
&V_tcp_reass_maxseg);
V_tcp_reass_zone = uma_zcreate("tcpreass", sizeof (struct tseg_qent),
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
/* Set the zone limit and read back the effective value. */
uma_zone_set_max(V_tcp_reass_zone, V_tcp_reass_maxseg);
V_tcp_reass_maxseg = uma_zone_get_max(V_tcp_reass_zone);
EVENTHANDLER_REGISTER(nmbclusters_change,
tcp_reass_zone_change, NULL, EVENTHANDLER_PRI_ANY);
}
@ -155,18 +154,13 @@ tcp_reass_flush(struct tcpcb *tp)
tp, tp->t_segqlen));
}
static int
tcp_reass_sysctl_maxseg(SYSCTL_HANDLER_ARGS)
{
V_tcp_reass_maxseg = uma_zone_get_max(V_tcp_reass_zone);
return (sysctl_handle_int(oidp, arg1, arg2, req));
}
static int
tcp_reass_sysctl_qsize(SYSCTL_HANDLER_ARGS)
{
V_tcp_reass_qsize = uma_zone_get_cur(V_tcp_reass_zone);
return (sysctl_handle_int(oidp, arg1, arg2, req));
int qsize;
qsize = uma_zone_get_cur(V_tcp_reass_zone);
return (sysctl_handle_int(oidp, &qsize, sizeof(qsize), req));
}
int