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Changed in_pcblookuphash() to not automatically call in_pcblookup() if

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the lookup fails. Updated callers to deal with this. Call in_pcblookuphash
instead of in_pcblookup() in in_pcbconnect; this improves performance of
UDP output by about 17% in the standard case.
This commit is contained in:
David Greenman 1995-05-03 07:16:53 +00:00
parent fd409c37b9
commit 0d7b7d3ea7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=8235
4 changed files with 42 additions and 23 deletions
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20
sys/netinet/in_pcb.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)in_pcb.c 8.2 (Berkeley) 1/4/94
* $Id: in_pcb.c,v 1.9 1995/04/09 01:29:18 davidg Exp $
* $Id: in_pcb.c,v 1.10 1995/04/10 08:52:45 davidg Exp $
*/
#include <sys/param.h>
@ -303,12 +303,9 @@ in_pcbconnect(inp, nam)
if (error = in_pcbladdr(inp, nam, &ifaddr))
return(error);
if (in_pcblookup(inp->inp_pcbinfo->listhead,
sin->sin_addr,
sin->sin_port,
if (in_pcblookuphash(inp->inp_pcbinfo, sin->sin_addr, sin->sin_port,
inp->inp_laddr.s_addr ? inp->inp_laddr : ifaddr->sin_addr,
inp->inp_lport,
0))
inp->inp_lport) != NULL)
return (EADDRINUSE);
if (inp->inp_laddr.s_addr == INADDR_ANY) {
if (inp->inp_lport == 0)
@ -588,17 +585,10 @@ in_pcblookuphash(pcbinfo, faddr, fport_arg, laddr, lport_arg)
LIST_REMOVE(inp, inp_hash);
LIST_INSERT_HEAD(head, inp, inp_hash);
}
splx(s);
return (inp);
break;
}
splx(s);
/*
* Didn't find an exact match, so try again looking for a matching
* wildcard PCB.
*/
return (in_pcblookup(pcbinfo->listhead, faddr, fport_arg, laddr,
lport_arg, INPLOOKUP_WILDCARD));
return (inp);
}
/*

17
sys/netinet/tcp_input.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* From: @(#)tcp_input.c 8.5 (Berkeley) 4/10/94
* $Id: tcp_input.c,v 1.20 1995/04/10 17:16:10 davidg Exp $
* $Id: tcp_input.c,v 1.21 1995/04/10 17:37:46 davidg Exp $
*/
#ifndef TUBA_INCLUDE
@ -337,7 +337,18 @@ tcp_input(m, iphlen)
* Locate pcb for segment.
*/
findpcb:
inp = in_pcblookuphash(&tcbinfo, ti->ti_src, ti->ti_sport, ti->ti_dst, ti->ti_dport);
/*
* First look for an exact match.
*/
inp = in_pcblookuphash(&tcbinfo, ti->ti_src, ti->ti_sport,
ti->ti_dst, ti->ti_dport);
/*
* ...and if that fails, do a wildcard search.
*/
if (inp == NULL) {
inp = in_pcblookup(&tcb, ti->ti_src, ti->ti_sport,
ti->ti_dst, ti->ti_dport, INPLOOKUP_WILDCARD);
}
/*
* If the state is CLOSED (i.e., TCB does not exist) then
@ -345,7 +356,7 @@ findpcb:
* If the TCB exists but is in CLOSED state, it is embryonic,
* but should either do a listen or a connect soon.
*/
if (inp == 0)
if (inp == NULL)
goto dropwithreset;
tp = intotcpcb(inp);
if (tp == 0)

17
sys/netinet/tcp_reass.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* From: @(#)tcp_input.c 8.5 (Berkeley) 4/10/94
* $Id: tcp_input.c,v 1.20 1995/04/10 17:16:10 davidg Exp $
* $Id: tcp_input.c,v 1.21 1995/04/10 17:37:46 davidg Exp $
*/
#ifndef TUBA_INCLUDE
@ -337,7 +337,18 @@ tcp_input(m, iphlen)
* Locate pcb for segment.
*/
findpcb:
inp = in_pcblookuphash(&tcbinfo, ti->ti_src, ti->ti_sport, ti->ti_dst, ti->ti_dport);
/*
* First look for an exact match.
*/
inp = in_pcblookuphash(&tcbinfo, ti->ti_src, ti->ti_sport,
ti->ti_dst, ti->ti_dport);
/*
* ...and if that fails, do a wildcard search.
*/
if (inp == NULL) {
inp = in_pcblookup(&tcb, ti->ti_src, ti->ti_sport,
ti->ti_dst, ti->ti_dport, INPLOOKUP_WILDCARD);
}
/*
* If the state is CLOSED (i.e., TCB does not exist) then
@ -345,7 +356,7 @@ findpcb:
* If the TCB exists but is in CLOSED state, it is embryonic,
* but should either do a listen or a connect soon.
*/
if (inp == 0)
if (inp == NULL)
goto dropwithreset;
tp = intotcpcb(inp);
if (tp == 0)

11
sys/netinet/udp_usrreq.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
* $Id: udp_usrreq.c,v 1.8 1995/03/16 18:15:09 bde Exp $
* $Id: udp_usrreq.c,v 1.9 1995/04/09 01:29:30 davidg Exp $
*/
#include <sys/param.h>
@ -256,10 +256,17 @@ udp_input(m, iphlen)
return;
}
/*
* Locate pcb for datagram.
* Locate pcb for datagram. First look for an exact match.
*/
inp = in_pcblookuphash(&udbinfo, ip->ip_src, uh->uh_sport,
ip->ip_dst, uh->uh_dport);
/*
* ...and if that fails, do a wildcard search.
*/
if (inp == NULL) {
inp = in_pcblookup(&udb, ip->ip_src, uh->uh_sport, ip->ip_dst,
uh->uh_dport, INPLOOKUP_WILDCARD);
}
if (inp == NULL) {
udpstat.udps_noport++;
if (m->m_flags & (M_BCAST | M_MCAST)) {