>> I think the following code in fib6_del_route in the latest kernel is useless.
>> 1125 if (fn->leaf == NULL && fn->fn_flags&RTN_TL_ROOT)
>> 1126 fn->leaf = &ip6_null_entry;
>>
>> ip6_null_entry will never be unlinked from fn->leaf now, that is,
>> fn->leaf == NULL will never meet.
>
> I think you are right, but if it is true the next block of
> code is dead too:
>
> /* If it was last route, expunge its radix tree node */
> if (fn->leaf == NULL) {
> fn->fn_flags &= ~RTN_RTINFO;
> rt6_stats.fib_route_nodes--;
> fn = fib6_repair_tree(fn);
> }
>
Dave,
I think this block of code can't be removed, because just the root(default route)
fn->leaf always has ip6_null_entry on it. The normal fn->leaf becomes NULL when last
route has been deleted, the radix tree should be expunged.
> But I am not completely convinced that all of these lines
> of code can be removed :-)
>
>
--
Regards
Gui Jianfeng
--------------------------------------------------
Gui Jianfeng
Development Dept.I
Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
8/F., Civil Defense Building, No.189 Guangzhou Road,
Nanjing, 210029, China
TEL: +86+25-86630566-838
COINS: 79955-838
FAX: +86+25-83317685
MAIL:[email protected]
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