On Wed, 24 Feb 2016, Gadre Nayan wrote: > I had few questions regarding the Netlink messages sent from User space. > > 1. The command gets transformed into Netlink Message in > ipset_cmd(session, enum cmd, lineno) ---> lib/session.c > > I see the attributes getting created. So which BUS id (Subsystem ID) > in Netlink is this message send to ? ipset uses NETLINK_NETFILTER netlink socket bus id and inside nfnetlink it has its own NFNL_SUBSYS_IPSET subsystem id. > 2. If I have to trace this command Netlink message in Kernel source, > where can I start loooking. (I would typically start at the subsystem > registration) so where can this IPSET subsystem be registered and > parsed. The registration happens in ip_set_core.c (nfnetlink_subsys_register()) and the message parser functions are actually callbacks, hooked into nfnetlink (ip_set_netlink_subsys_cb[]). If you want to follow the whole processing path, then start at netlink, then nfnetlink and after that comes ipset. Best regards, Jozsef - E-mail : kadlec@xxxxxxxxxxxxxxxxx, kadlecsik.jozsef@xxxxxxxxxxxxx PGP key : http://www.kfki.hu/~kadlec/pgp_public_key.txt Address : Wigner Research Centre for Physics, Hungarian Academy of Sciences H-1525 Budapest 114, POB. 49, Hungary -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
