Hi, I don't think that will solve the problem cos: rt_intern_hash called in the finall stages of make_route in ip_route_output_slow tries to arp bind a the next hop. If you give a different ip address, then it may not either ever know of the mac address of this ghost ip or worse may get a wrong mac address and go to a wrong next hop. What happens if we set the tos flag to have RTO_ONLINK set, so that the scope is RT_SCOPE_LINK, with oif set to the desired output interface, can I then force the skb thru that ouput interface? I would be really grateful if some one helps me out with this. Eagerly awaiting your replies. Regards, Devesh Agrawal On Sat, 26 Mar 2005 22:44:53 +0530, Vinay Reddy <vinayvinay@xxxxxxxxx> wrote: > Hi, > Say packets for 10.6.0.0 is always routed through wlan0, and you want > packets for 10.7.0.0 to be routed through one of eth0 or wlan0 > depending on their IPs(required for mobile IP). Also assume that the > default routing for a 10.7.0.0 network IP is done through eth0. Now > you want to route a packet destined for 10.7.0.2 through wlan0. You > can just call ip_route_output_key for 10.6.0.1. This way the packet > will surely go through wlan0. > Am I missing anything?? > > Cheers, > Vinay > > On Sat, 26 Mar 2005 11:20:22 +0530, Devesh Agrawal > <devesh.agrawal@xxxxxxxxx> wrote: > > Hi, > > I have to route a packet thru a particular output interface, however > > my routing tables have two routes, that match it : one to eth0 and one > > to wlan0, with the eth0 being chosen as it is more specific. I am > > using ip_route_output_key, with fl->oif = index of device I want this > > packet to go (=wlan0). > > However, in the ip_route_output_slow I found that even when oif is not > > 0, you get a valid dev_out, however when the fib_lookup succeeds, you > > merely free this old dev_out, and assign dev_out to the res.dev (ie > > the one found out by the fib_lookup), > > So this means that even if I specify the oif, the packet will still > > get routed to eth0. > > Am I correct, or is there something I am missing. Also I am setting > > tos bit RTO_ONLINK . > > Please help me. I am quite perplexed by this. > > Sincerely, > > -- > > Devesh Agrawal > > - > > : send the line "unsubscribe linux-net" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > -- > Vinay Kumar Reddy B > 238, Mandakini Hostel, > IIT Madras, > Chennai - 600036 > -- Devesh Agrawal 4th year Dual Degree. Dept of CSE Indian Institute of Technology , Madras Room No . 309 , Alakananda Hostel Chennai 600036 ,India Ph : +91 9382102431 - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
