Messages in this thread | | | Date | Tue, 23 Nov 1999 17:04:38 +0800 | From | wu_yb <> | Subject | new ip_rcv() |
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In kernel 2.0.x, ip_rcv() { ... if ( iph->daddr == skb->dev->pa_addr || ... ) { /* this packet is for me, process it */ } }
but in 2.2.x ip_rcv() { if ( skb->dst == NULL ) if ( ip_route_input( ... ) ) ... return skb->dst->input(skb) ; }
The new 2.2.x ip_rcv() call ip_route_input() to check the route to dst, then call the dst->input(). If a packet is dested for this box, the 2.2.x's ip_route_input() must compare src, dst, iif, oif, tos, but in 2.0.x, only iph->daddr == dev->pa_addr is checked, so I think the older one is faster !! If anyone can help me
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