netdev - Re: [PATCH iproute2] ip: add support for IFA_F

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Date:	Thu, 03 Dec 2009 14:39:19 -0500
From:	Brian Haley <brian.haley@...com>
To:	Stephen Hemminger <shemminger@...tta.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH iproute2] ip: add support for IFA_F_DADFAILED

Hi Stephen,

Brian Haley wrote:
> [I'm not sure if I needed to update if_addr.h, or if that will happen
>  automatically when you update the headers to 2.6.32]
> 
> 
> Add support for IFA_F_DADFAILED and update ip.8 man page.

It looks like you applied a test patch I had sent Jens instead of this
one.  Can you revert that and apply this instead?  Or I can send a new
one based on your current git tree.

Thanks,

-Brian


> Signed-off-by: Brian Haley <brian.haley@...com>
> ---
> 
> diff --git a/include/linux/if_addr.h b/include/linux/if_addr.h
> index 08ea980..41b0193 100644
> --- a/include/linux/if_addr.h
> +++ b/include/linux/if_addr.h
> @@ -41,6 +41,7 @@ enum
>  
>  #define	IFA_F_NODAD		0x02
>  #define IFA_F_OPTIMISTIC	0x04
> +#define IFA_F_DADFAILED		0x08
>  #define	IFA_F_HOMEADDRESS	0x10
>  #define IFA_F_DEPRECATED	0x20
>  #define IFA_F_TENTATIVE		0x40
> diff --git a/ip/ipaddress.c b/ip/ipaddress.c
> index 267ecb3..32c9008 100644
> --- a/ip/ipaddress.c
> +++ b/ip/ipaddress.c
> @@ -64,7 +64,7 @@ static void usage(void)
>  		iplink_usage();
>  	}
>  	fprintf(stderr, "Usage: ip addr {add|change|replace} IFADDR dev STRING [ LIFETIME ]\n");
> -	fprintf(stderr, "                                                      [ CONFFLAG-LIST]\n");
> +	fprintf(stderr, "                                                      [ CONFFLAG-LIST ]\n");
>  	fprintf(stderr, "       ip addr del IFADDR dev STRING\n");
>  	fprintf(stderr, "       ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
>  	fprintf(stderr, "                            [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n");
> @@ -74,7 +74,8 @@ static void usage(void)
>  	fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
>  	fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
>  	fprintf(stderr, "FLAG  := [ permanent | dynamic | secondary | primary |\n");
> -	fprintf(stderr, "           tentative | deprecated | CONFFLAG-LIST ]\n");
> +	fprintf(stderr, "           tentative | deprecated | dadfailed |\n");
> +	fprintf(stderr, "           CONFFLAG-LIST ]\n");
>  	fprintf(stderr, "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n");
>  	fprintf(stderr, "CONFFLAG  := [ home | nodad ]\n");
>  	fprintf(stderr, "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n");
> @@ -508,6 +509,10 @@ int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
>  		fprintf(fp, "dynamic ");
>  	} else
>  		ifa->ifa_flags &= ~IFA_F_PERMANENT;
> +	if (ifa->ifa_flags&IFA_F_DADFAILED) {
> +		ifa->ifa_flags &= ~IFA_F_DADFAILED;
> +		fprintf(fp, "dadfailed ");
> +	}
>  	if (ifa->ifa_flags)
>  		fprintf(fp, "flags %02x ", ifa->ifa_flags);
>  	if (rta_tb[IFA_LABEL])
> @@ -655,6 +660,9 @@ static int ipaddr_list_or_flush(int argc, char **argv, int flush)
>  		} else if (strcmp(*argv, "nodad") == 0) {
>  			filter.flags |= IFA_F_NODAD;
>  			filter.flagmask |= IFA_F_NODAD;
> +		} else if (strcmp(*argv, "dadfailed") == 0) {
> +			filter.flags |= IFA_F_DADFAILED;
> +			filter.flagmask |= IFA_F_DADFAILED;
>  		} else if (strcmp(*argv, "label") == 0) {
>  			NEXT_ARG();
>  			filter.label = *argv;
> diff --git a/man/man8/ip.8 b/man/man8/ip.8
> index a8fccc4..1145b28 100644
> --- a/man/man8/ip.8
> +++ b/man/man8/ip.8
> @@ -97,7 +97,7 @@ ip \- show / manipulate routing, devices, policy routing and tunnels
>  .ti -8
>  .IR FLAG " := "
>  .RB "[ " permanent " | " dynamic " | " secondary " | " primary " | "\
> -tentative " | " deprecated " ]"
> +tentative " | " deprecated " | " dadfailed " ]"
>  
>  .ti -8
>  .BR "ip addrlabel" " { " add " | " del " } " prefix
> @@ -1030,7 +1030,7 @@ addresses.
>  
>  .TP
>  .B tentative
> -(IPv6 only) only list addresses which did not pass duplicate
> +(IPv6 only) only list addresses which have not yet passed duplicate
>  address detection.
>  
>  .TP
> @@ -1038,6 +1038,11 @@ address detection.
>  (IPv6 only) only list deprecated addresses.
>  
>  .TP
> +.B dadfailed
> +(IPv6 only) only list addresses which have failed duplicate
> +address detection.
> +
> +.TP
>  .BR primary " and " secondary
>  only list primary (or secondary) addresses.
>  
> --
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