In article <7B2A7784F4B7F0409947481F3F3FEF8303A070F6@eammlnt051.lmc.ericsson.se> you wrote: > I would like to know if the cloned sk_buff is really needed, and also what > is the path used, (how to find it, since it's a maze to try to figure out > the receiving path, by looking at place where sk_buff are cloned, since I > don't know the entry function). At least knowing the entry function could > help a lot. For 2.4 see net/core/dev.c:netif_rx(skb) which is called by the network driver. This will add it to the queue->input_pkt_queue, which is processed by net_rx_action(), which will call the protocol families receive handlers eighter directly via the func() method of the protcol or by deliver_to_old_cones() which does contain the clone. for ip it is net/ipv4/ip_input.c:ip_rcv() which hands it to ip_rcv_finish() which distributes it to the ip_local_deliver() for local targets which then passes it to ip_local_deliver_finish() which calls the ip protocol handler, for example udp_rcv which looks up the socket and passes it into that. Hope this is nearly right, by reading the source. Note, I am not shure with softirq and stuff, which function is running in the irq or bottom half mode. Greetings Bernd - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
