/*
* transmit out through the lower layer interface
*
* infolen - length of the information part of the packet
*/
void ppp_transmit(GAtPPP *ppp, guint8 *packet, guint infolen)
{
struct ppp_header *header = (struct ppp_header *) packet;
guint16 proto = ppp_proto(packet);
guint8 code;
gboolean lcp = (proto == LCP_PROTOCOL);
guint32 xmit_accm = 0;
/*
* all LCP Link Configuration, Link Termination, and Code-Reject
* packets must be sent with the default sending ACCM
*/
if (lcp) {
code = pppcp_get_code(packet);
lcp = code > 0 && code < 8;
}
if (lcp) {
xmit_accm = g_at_hdlc_get_xmit_accm(ppp->hdlc);
g_at_hdlc_set_xmit_accm(ppp->hdlc, ~0U);
}
header->address = PPP_ADDR_FIELD;
header->control = PPP_CTRL;
if (g_at_hdlc_send(ppp->hdlc, packet,
infolen + sizeof(*header)) == FALSE)
g_print("Failed to send a frame\n");
if (lcp)
g_at_hdlc_set_xmit_accm(ppp->hdlc, xmit_accm);
}
static void send_command(GAtHDLC *hdlc, guint8 cmd)
{
unsigned char cmdbuf[1];
cmdbuf[0] = cmd;
g_at_hdlc_send(hdlc, cmdbuf, sizeof(cmdbuf));
}
static void send_subsys_command(GAtHDLC *hdlc, guint8 id, guint16 cmd)
{
unsigned char cmdbuf[4];
cmdbuf[0] = 0x4b;
cmdbuf[1] = id;
cmdbuf[2] = cmd & 0xff;
cmdbuf[3] = cmd >> 8;
g_at_hdlc_send(hdlc, cmdbuf, sizeof(cmdbuf));
}
