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map: ignore psid and psidlen if psidlen is 0

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Signed-off-by: Steven Barth <steven@midlink.org>

SVN-Revision: 43946
This commit is contained in:
Steven Barth
2015-01-12 10:56:54 +00:00
parent b0a2d7ad0d
commit d73c382a73
2 changed files with 6 additions and 4 deletions
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6
package/network/ipv6/map/src/mapcalc.c
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@@ -2,7 +2,7 @@
* mapcalc - MAP parameter calculation
*
* Author: Steven Barth <cyrus@openwrt.org>
* Copyright (c) 2014 cisco Systems, Inc.
* Copyright (c) 2014-2015 cisco Systems, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
@@ -271,8 +271,10 @@ int main(int argc, char *argv[])
if (ealen < 0 && pdlen >= 0)
ealen = pdlen - prefix6len;
if (psidlen < 0)
if (psidlen <= 0) {
psidlen = ealen - (32 - prefix4len);
psid = -1;
}
if (psid < 0 && psidlen <= 16 && psidlen >= 0 && pdlen >= 0 && ealen >= psidlen) {
bmemcpys64(&psid16, &pd, prefix6len + ealen - psidlen, psidlen);