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    The following form allows you to view linux man pages.

    Command:

    libnetlink

    
    
    

    SYNOPSIS

           #include <asm/types.h>
           #include <libnetlink.h>
           #include <linux/netlink.h>
           #include <linux/rtnetlink.h>
    
           int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
    
           int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
    
           int rtnl_send(struct rtnl_handle *rth, char *buf, int len)
    
           int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
    
           int rtnl_dump_filter(struct rtnl_handle *rth,
                          int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
                          void *arg1,
                          int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
                          void *arg2)
    
           int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
                      unsigned groups, struct nlmsghdr *answer,
                      int (*junk)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
                      void *jarg)
    
           int rtnl_listen(struct rtnl_handle *rtnl,
                      int (*handler)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
                      void *jarg)
    
           int rtnl_from_file(FILE *rtnl,
                      int (*handler)(struct sockaddr_nl *,struct nlmsghdr *n, void *),
                      void *jarg)
    
           int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data)
    
           int addattr_l(struct nlmsghdr *n, int maxlen, int type, void *data, int alen)
    
           int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data)
    
           int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen)
    
    
    

    DESCRIPTION

           libnetlink provides a higher level interface to rtnetlink(7).  The read
           functions return 0 on success and a negative  errno  on  failure.   The
           send functions return the amount of data sent, or -1 on error.
    
           rtnl_open
                  Open  a rtnetlink socket and save the state into the rth handle.
                  This handle is passed to all subsequent calls.  subscriptions is
                  a  bitmap of the rtnetlink multicast groups the socket will be a
                  member of.
    
                  source address of the message, the message itself  and  arg1  as
                  arguments.  0 as return means that the filter passed, a negative
                  value is returned by rtnl_dump_filter in case of error. NULL for
                  filter  means  to not use a filter.  junk is used to filter mes-
                  sages not destined to the local socket.  Only one message bundle
                  is  received.  Unless there is no message pending, this function
                  does not block.
    
           rtnl_listen
                  Receive netlink data after a request and  pass  it  to  handler.
                  handler  is a callback that gets the message source address, the
                  message itself, and the jarg cookie as arguments.  It  will  get
                  called  for  all  received messages.  Only one message bundle is
                  received. Unless there is no message pending this function  does
                  not block.
    
           rtnl_from_file
                  Works  like rtnl_listen, but reads a netlink message bundle from
                  the file file and passes the messages to  handler  for  parsing.
                  The  file contains raw data as received from a rtnetlink socket.
    
           The following functions are useful to construct custom  rtnetlink  mes-
           sages.  For  simple database dumping with filtering it is better to use
           the higher level functions above. See rtnetlink(3)  and  netlink(3)  on
           how  to  generate  a rtnetlink message. The following utility functions
           require a continuous buffer that already  contains  a  netlink  message
           header and a rtnetlink request.
    
           rtnl_send
                  Send the rtnetlink message in buf of length len to handle rth.
    
           addattr32
                  Add  a  __u32  attribute  of  type  type  and with value data to
                  netlink message n, which is part of a buffer of length maxlen.
    
           addattr_l
                  Add a variable length attribute of type type and with value data
                  and  alen length to netlink message n, which is part of a buffer
                  of length maxlen.  data is copied.
    
           rta_addattr32
                  Initialize the rtnetlink attribute rta with a __u32 data  value.
    
           rta_addattr32
                  Initialize  the  rtnetlink  attribute rta with a variable length
    
           netlink(7), rtnetlink(7)
           /usr/include/linux/rtnetlink.h
    
                                                                     libnetlink(3)
    
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