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nfq_cfg(3) libnetfilter_queue nfq_cfg(3)

NAME

nfq_cfg - Config helpers

SYNOPSIS

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

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.

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.

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.

Author

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Thu Jan 28 2021 Version 1.0.5