tree 17aa3d1999806375e0ce7e627cca406dcaec9940
parent f0cb2b4a1a529c05c5cc63a620b0c2a34383f4c8
author Pablo Neira Ayuso <pablo@gnumonks.org> 1307448468 +0200
committer Pablo Neira Ayuso <pablo@gnumonks.org> 1307460533 +0200

e1input: rework generic (virtual and real) E1 line operations

struct e1inp_line_ops {
       int     (*sign_link_up)(struct msgb *msg, struct e1inp_line *line);
       int     (*sign_link)(struct msgb *msg, struct e1inp_sign_link *link);
       int     (*error)(struct msgb *msg, int error);
};

The description of the operations is the following:

* sign_link_up is invoked if the signalling link becomes up. In A-bis
over IP, we have to wait until the other peer identifies itself as
a BTS/BSC device, then this function is invoked. This function is not
used by ISDN drivers, the signalling link can be set up just after
the line is created.

* sign_link is called if we receive OML/RSL message. This function
is used both by ISDN and A-bis over IP drivers.

* error is called if we receive a malformed message. It is used both
by ISDN and A-bis over IP drivers.