Config helpers

Functions
void	nfq_nlmsg_cfg_put_cmd (struct nlmsghdr *nlh, uint16_t pf, uint8_t cmd)
void	nfq_nlmsg_cfg_put_params (struct nlmsghdr *nlh, uint8_t mode, int range)
void	nfq_nlmsg_cfg_put_qmaxlen (struct nlmsghdr *nlh, uint32_t queue_maxlen)

Detailed Description

Function Documentation

nfq_nlmsg_cfg_put_cmd()

void nfq_nlmsg_cfg_put_cmd	(	struct nlmsghdr *	nlh,
		uint16_t	pf,
		uint8_t	cmd
	)

nfq_nlmsg_cfg_put_cmd Add netlink config command to netlink message

Parameters

nlh	Pointer to netlink message
pf	Packet family (e.g. AF_INET)
cmd	nfqueue nfnetlink command.

Possible commands are:

• NFQNL_CFG_CMD_NONE: Do nothing. It can be useful to know if the queue subsystem is working.
• NFQNL_CFG_CMD_BIND: Binds the program to a specific queue.
• NFQNL_CFG_CMD_UNBIND: Unbinds the program to a specifiq queue.

Obsolete commands:

• NFQNL_CFG_CMD_PF_BIND: Binds to process packets belonging to the given protocol family (ie. PF_INET, PF_INET6, etc).
• NFQNL_CFG_CMD_PF_UNBIND: Unbinds from processing packets belonging to the given protocol family. Both commands are ignored by Linux kernel 3.8 and later versions.

Definition at line 166 of file nlmsg.c.

nfq_nlmsg_cfg_put_params()

void nfq_nlmsg_cfg_put_params	(	struct nlmsghdr *	nlh,
		uint8_t	mode,
		int	range
	)

nfq_nlmsg_cfg_put_params Add parameter to netlink message

Parameters

nlh	Pointer to netlink message
mode	one of NFQNL_COPY_NONE, NFQNL_COPY_META or NFQNL_COPY_PACKET
range	value of parameter

Definition at line 182 of file nlmsg.c.

nfq_nlmsg_cfg_put_qmaxlen()

void nfq_nlmsg_cfg_put_qmaxlen	(	struct nlmsghdr *	nlh,
		uint32_t	queue_maxlen
	)

nfq_nlmsg_cfg_put_qmaxlen Add queue maximum length to netlink message

Parameters

nlh	Pointer to netlink message
queue_maxlen	Maximum queue length

Definition at line 197 of file nlmsg.c.