Config helpers

Functions
void	nfq_nlmsg_cfg_put_cmd (struct nlmsghdr *nlh, uint16_t pf, uint8_t cmd)
	nfq_nlmsg_cfg_build_request- build netlink config message More...
	EXPORT_SYMBOL (nfq_nlmsg_cfg_put_cmd)
void	nfq_nlmsg_cfg_put_params (struct nlmsghdr *nlh, uint8_t mode, int range)
	EXPORT_SYMBOL (nfq_nlmsg_cfg_put_params)
void	nfq_nlmsg_cfg_put_qmaxlen (struct nlmsghdr *nlh, uint32_t queue_maxlen)
	EXPORT_SYMBOL (nfq_nlmsg_cfg_put_qmaxlen)

Detailed Description

Function Documentation

EXPORT_SYMBOL

(

nfq_nlmsg_cfg_put_cmd

)

EXPORT_SYMBOL

(

nfq_nlmsg_cfg_put_params

)

EXPORT_SYMBOL

(

nfq_nlmsg_cfg_put_qmaxlen

)

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

nfq_nlmsg_cfg_build_request- build netlink config message

Parameters

buf	Buffer where netlink message is going to be written.
cfg	Structure that contains the config parameters.
command	nfqueue nfnetlink command.

This function returns a pointer to the netlink message. If something goes wrong it returns NULL.

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.

References nfqnl_msg_config_cmd::command, mnl_attr_put(), and NFQA_CFG_CMD.

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

References nfqnl_msg_config_params::copy_range, mnl_attr_put(), and NFQA_CFG_PARAMS.

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void nfq_nlmsg_cfg_put_qmaxlen	(	struct nlmsghdr *	nlh,
		uint32_t	queue_maxlen
	)

References mnl_attr_put_u32(), and NFQA_CFG_QUEUE_MAXLEN.

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