This is the first of a number of proposed additions to libnetfilter_queue.
The plan is to minimise the need for direct calls to libmnl functions in a
libnetfilter_queue program.
- example program nf-queue.c is shorter
- calling sequences are simplaer
- documentation is mostly in one place
Other planned functions include:
Function Purpose
======== =======
nfq_socket_sendto Eliminate mnl_socket_sendto arg 3 (nlh->nlmsg_len)
nfq_socket_open Eliminate mnl_socket_open arg (NETLINK_NETFILTER)
nfq_socket_bind Eliminate mnl_socket_bind args 2 & 3
(0, MNL_SOCKET_AUTOPID)
nfq_socket_setsockopt Eliminate mnl_socket_setsockopt args 3 & 4
(&ret, sizeof(int))
nfq_cb_run Eliminate mnl_cb_run arg 3 (0). Also:
Replace mnl_cb_run arg 4 (unsigned int portid) with
(struct nlmsghdr *nlh). This eliminates the call to
mnl_socket_get_portid and the need to declare portid
nfq_attr_put_config_flags Avoid having to call mnl_attr_put_u32 twice, also
avoid having to use htonl.
Implementation note: copy nfq_set_queue_flags
documentation
nfq_attr_put_u32 Avoid call to htonl
nfq_attr_get_u32 Avoid call to ntohl
Leading eventually to the new top-level module:
Library Setup [CURRENT]
Duncan Roe (1):
src: move static nfq_hdr_put from examples/nf-queue.c into the library
since everyone is going to want it.
examples/nf-queue.c | 15 -------------
include/libnetfilter_queue/libnetfilter_queue.h | 1 +
src/nlmsg.c | 28 ++++++++++++++++++++++---
3 files changed, 26 insertions(+), 18 deletions(-)
--
2.14.5
