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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In libnl3, I found a little problem.<o:p></o:p></p>
<p class="MsoNormal">When use NL_AUTO_PROVIDE as the third parameter for rtnl_route_alloc_cache, some routing info has been lost! Then use rtnl_route_get_flags to get flags, the result of flags is right.<o:p></o:p></p>
<p class="MsoNormal">Use 0 as the third parameter “int flags” for rtnl_route_alloc_cache, the routing info is correct, but then use rtnl_route_get_flags to get flags, it will always return zero.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I found that GNOME group also found this problem, but I have not found the similar bug in our bug queue. How to understand this problem?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D">uint32_t rtnl_route_get_flags(struct rtnl_route *route)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D">{<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> return route->rt_flags;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D">int rtnl_route_alloc_cache(struct nl_sock *sk, int family, int flags,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> struct nl_cache **result)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D">{<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> struct nl_cache *cache;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> int err;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> if (!(cache = nl_cache_alloc(&rtnl_route_ops)))<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> return -NLE_NOMEM;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> cache->c_iarg1 = family;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> cache->c_iarg2 = flags;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> if (sk && (err = nl_cache_refill(sk, cache)) < 0) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> free(cache);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> return err;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> *result = cache;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D"> return 0;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#0D0D0D">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal">Reference for GNOME on this libnl issue:<o:p></o:p></p>
<p class="MsoNormal"><a href="http://mail.gnome.org/archives/networkmanager-list/2011-September/msg00233.html">http://mail.gnome.org/archives/networkmanager-list/2011-September/msg00233.html</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.5pt;background:white">Yours sincerely,</span><o:p></o:p></p>
<p class="MsoNormal">-Hanks.Wang<span style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";
color:#365F91"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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