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Date:      Thu, 22 Jun 1995 05:40:30 +0400 (MSD)
From:      =?KOI8-R?Q?=E1=CE=C4=D2=C5=CA_=FE=C5=D2=CE=CF=D7?= aka "Andrey A. Chernov, Black Mage" <ache@astral.msk.su>
To:        hackers@freebsd.org
Cc:        David Greenman <davidg@freebsd.org>, "Garrett A. Wollman" <wollman@lcs.mit.edu>
Subject:   Fix NULL-encapsulated interfaces (lo & tun) handling (DLT_NULL)
Message-ID:  <OHEeCwlOZA@deep-thought.demos.su>

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Any comments? I plan to commit...

*** gencode.c.bak	Tue Jun 13 02:01:05 1995
--- gencode.c	Thu Jun 22 05:31:16 1995
***************
*** 471,478 ****
  		return;
  
  	case DLT_NULL:
! 		off_linktype = -1;
! 		off_nl = 0;
  		return;
  
  	case DLT_PPP:
--- 471,478 ----
  		return;
  
  	case DLT_NULL:
! 		off_linktype = 0;
! 		off_nl = 4;
  		return;
  
  	case DLT_PPP:
***************
*** 543,548 ****
--- 543,557 ----
  		if (proto == ETHERTYPE_IP)
  			proto = 0x0021;		/* XXX - need ppp.h defs */
  		break;
+ 
+ 	case DLT_NULL:
+ 		if (proto == ETHERTYPE_IP) {
+ 			proto = htonl(AF_INET); /* loopback & tun put */
+ 						/* sa_family into     */
+ 						/* prepended word     */
+ 			return gen_cmp(off_linktype, BPF_W, (long)proto);
+ 		}
+  		break;
  	}
  	return gen_cmp(off_linktype, BPF_H, (long)proto);
  }

-- 
Andrey A. Chernov        : And I rest so composedly,  /Now, in my bed,
ache@astral.msk.su       : That any beholder  /Might fancy me dead -
FidoNet: 2:5020/230.3    : Might start at beholding me,  /Thinking me dead.
RELCOM Team,FreeBSD Team :         E.A.Poe         From "For Annie" 1849



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