In article <[EMAIL PROTECTED]> (at Wed, 7 Feb 2007 15:55:03 -0500), Neil Horman
<[EMAIL PROTECTED]> says:
> diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
> index 7b7bd44..8a1ea96 100644
> --- a/net/ipv6/ip6_output.c
> +++ b/net/ipv6/ip6_output.c
> @@ -859,6 +859,34 @@ static int ip6_dst_lookup_tail(struct sock *sk,
> err = ipv6_get_saddr(*dst, &fl->fl6_dst, &fl->fl6_src);
> if (err)
> goto out_err_release;
> +#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
> + /*
> + * Here if the dst entry we've looked up
> + * has a neighbour entry that is in the INCOMPLETE
> + * state and the src address from the flow is
> + * marked as OPTIMISTIC, we release the found
> + * dst entry and replace it instead with the
> + * dst entry of the nexthop router
> + */
> + if (!((*dst)->neighbour->nud_state & NUD_VALID)) {
> + struct inet6_ifaddr *ifp;
> + struct flowi fl_gw;
> + ifp = ipv6_get_ifaddr(&fl->fl6_src, (*dst)->dev, 1);
> +
> + if (ifp && ifp->flags & IFA_F_OPTIMISTIC) {
> + /*
> + * We need to get the dst entry for the
> + * default router instead
> + */
> + dst_release(*dst);
> + memcpy(&fl_gw, fl, sizeof(struct flowi));
> + memset(&fl_gw.fl6_dst, 0, sizeof(struct
> in6_addr));
> + *dst = ip6_route_output(sk, &fl_gw);
> + if ((err = (*dst)->error))
> + goto out_err_release;
>
> + }
> + }
> +#endif
> }
>
> return 0;
Sorry, this is still not correct if the source address is already
specified. I think they should be placed just betwee laste "}" and
"return 0;", no?
I still have a question. Now, who will install the kernel route for
the incoming packet? Can we get packet for our unicast address during
optimistic DAD period?
--yoshfuji
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