Move exact match pcb's to the head of the list to improve lookup
performance.
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parent
3d0dfb4eea
commit
3dbdc25caa
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=6835
@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)in_pcb.c 8.2 (Berkeley) 1/4/94
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* $Id: in_pcb.c,v 1.4 1995/02/08 20:22:07 wollman Exp $
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* $Id: in_pcb.c,v 1.5 1995/02/16 00:55:37 wollman Exp $
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*/
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#include <sys/param.h>
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@ -495,7 +495,7 @@ in_pcblookup(head, faddr, fport_arg, laddr, lport_arg, flags)
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u_int fport_arg, lport_arg;
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int flags;
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{
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register struct inpcb *inp, *match = 0;
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register struct inpcb *inp, *match = NULL;
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int matchwild = 3, wildcard;
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u_short fport = fport_arg, lport = lport_arg;
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@ -527,8 +527,13 @@ in_pcblookup(head, faddr, fport_arg, laddr, lport_arg, flags)
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if (wildcard < matchwild) {
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match = inp;
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matchwild = wildcard;
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if (matchwild == 0)
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if (matchwild == 0) {
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if (match->inp_prev != head) {
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remque(match);
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insque(match, head);
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}
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break;
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}
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}
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}
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return (match);
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