| upper | This is the interface to the UNI. It uses the following message format:
struct sscfu_arg {
uint32_t sig;
u_char data[];
};
The sig field is one of the following signals:
enum saal_sig {
SAAL_ESTABLISH_request,/* U -> SAAL: (UU) */
SAAL_ESTABLISH_indication, /* SAAL -> U: (UU) */
SAAL_ESTABLISH_confirm,/* SAAL -> U: (UU) */
SAAL_RELEASE_request, /* U -> SAAL: (UU) */
SAAL_RELEASE_confirm, /* SAAL -> U: */
SAAL_RELEASE_indication, /* SAAL -> U: (UU) */
SAAL_DATA_request,/* U -> SAAL: (DATA) */
SAAL_DATA_indication, /* SAAL -> U: (DATA) */
SAAL_UDATA_request, /* U -> SAAL: (UDATA) */
SAAL_UDATA_indication, /* SAAL -> U: (UDATA) */
};
The arrows in the comment show the direction of the signal, whether it is a signal that comes out of the node (‘->’), or is sent by the node user to the node (‘<-’). The type of the data expected for the signal is specified in parentheses. This data starts at the data field of the message structure. |
