From a6c05c3d064dbb83be88cba3189beb5db9d2dfc3 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Tue, 25 Dec 2007 20:54:42 -0800 Subject: [IPV4]: Fix ip command line processing. Recently the documentation in Documentation/nfsroot.txt was update to note that in fact ip=off and ip=::::::off as the latter is ignored and the default (on) is used. This was certainly a step in the direction of reducing confusion. But it seems to me that the code ought to be fixed up so that ip=::::::off actually turns off ip autoconfiguration. This patch also notes more specifically that ip=on (aka ip=::::::on) is the default. Signed-off-by: Simon Horman Signed-off-by: David S. Miller --- Documentation/nfsroot.txt | 5 +---- net/ipv4/ipconfig.c | 10 ++++------ 2 files changed, 5 insertions(+), 10 deletions(-) diff --git a/Documentation/nfsroot.txt b/Documentation/nfsroot.txt index 9b956a96936..c86dd38e228 100644 --- a/Documentation/nfsroot.txt +++ b/Documentation/nfsroot.txt @@ -97,10 +97,6 @@ ip=:::::: autoconfiguration will take place. The most common way to use this is "ip=dhcp". - Note that "ip=off" is not the same thing as "ip=::::::off", because in - the latter autoconfiguration will take place if any of DHCP, BOOTP or RARP - are compiled in the kernel. - IP address of the client. Default: Determined using autoconfiguration. @@ -150,6 +146,7 @@ ip=:::::: off or none: don't use autoconfiguration on or any: use any protocol available in the kernel + (default) dhcp: use DHCP bootp: use BOOTP rarp: use RARP diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index 96400b0bd08..420f56ad59f 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -1403,6 +1403,10 @@ static int __init ic_proto_name(char *name) if (!strcmp(name, "on") || !strcmp(name, "any")) { return 1; } + if (!strcmp(name, "off") || !strcmp(name, "none")) { + ic_enable = 0; + return 1; + } #ifdef CONFIG_IP_PNP_DHCP else if (!strcmp(name, "dhcp")) { ic_proto_enabled &= ~IC_RARP; @@ -1437,12 +1441,6 @@ static int __init ip_auto_config_setup(char *addrs) ic_set_manually = 1; - ic_enable = (*addrs && - (strcmp(addrs, "off") != 0) && - (strcmp(addrs, "none") != 0)); - if (!ic_enable) - return 1; - if (ic_proto_name(addrs)) return 1; -- cgit