On Sun, Apr 28, 2002 at 10:38:27AM -0700, Anand S wrote: > As per the netfilter howtos, i figured out that > outgoing packets from a machine will go to > NF_IP_LOCAL_OUT first then routing code then > NF_IP_POST_ROUTING. But when i looked thru the code i > could not figure out where the routing code was > called.
> After calling NF_HOOK() with NF_IP_LOCAL_OUT i could > not figure out where the routing code is called. > Some one could through some light on this In reality, the routing code is called first. ip_route_output() is called by ip_build_xmit() before NF_IP_LOCAL_OUT is called. Hoewver, one can change the routing information from within the LOCAL_OUT hook, since the output_maybe_reroute() function uses the skb->dst->output() function _after_ traversal of LOCAL_OUT. (i.e. skb->dst can be changed in LOCAL_OUT without any problems) -- Live long and prosper - Harald Welte / [EMAIL PROTECTED] http://www.gnumonks.org/ ============================================================================ GCS/E/IT d- s-: a-- C+++ UL++++$ P+++ L++++$ E--- W- N++ o? K- w--- O- M+ V-- PS++ PE-- Y++ PGP++ t+ 5-- !X !R tv-- b+++ !DI !D G+ e* h--- r++ y+(*)
