[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 <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -97,10 +97,6 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>
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autoconfiguration will take place. The most common way to use this
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is "ip=dhcp".
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Note that "ip=off" is not the same thing as "ip=::::::off", because in
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the latter autoconfiguration will take place if any of DHCP, BOOTP or RARP
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are compiled in the kernel.
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<client-ip> IP address of the client.
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Default: Determined using autoconfiguration.
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@ -150,6 +146,7 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>
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off or none: don't use autoconfiguration
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on or any: use any protocol available in the kernel
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(default)
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dhcp: use DHCP
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bootp: use BOOTP
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rarp: use RARP
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@ -1403,6 +1403,10 @@ static int __init ic_proto_name(char *name)
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if (!strcmp(name, "on") || !strcmp(name, "any")) {
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return 1;
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}
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if (!strcmp(name, "off") || !strcmp(name, "none")) {
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ic_enable = 0;
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return 1;
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}
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#ifdef CONFIG_IP_PNP_DHCP
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else if (!strcmp(name, "dhcp")) {
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ic_proto_enabled &= ~IC_RARP;
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@ -1437,12 +1441,6 @@ static int __init ip_auto_config_setup(char *addrs)
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ic_set_manually = 1;
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ic_enable = (*addrs &&
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(strcmp(addrs, "off") != 0) &&
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(strcmp(addrs, "none") != 0));
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if (!ic_enable)
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return 1;
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if (ic_proto_name(addrs))
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return 1;
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