void
nic_hdlr(int evt)
{
int whichifc;
uchar src_addr[16+1];
uchar rxbuf[MAX_FRAMEBYTES];
uchar *tdataptr;
ulong tframelen;
ulong rx_frame_size;
/* Lower 12 bits of interrupt code specify IFC # */
whichifc = evt & 0xFFF;
rx_frame_size = devnet_getrxfsz(whichifc);
devnet_recv(&rxbuf[0], rx_frame_size, whichifc);
//memmove(&src_addr, &rxbuf[0], 16);
/* DEBUG */
printf("swradio-source : Just got frame from node [%d], length [%d]\n",
whichifc, rx_frame_size);
return;
}
void
nic_hdlr(int evt)
{
int whichifc;
char proto;
uchar src_addr[16+1];
uchar rxbuf[MAX_FRAMEBYTES];
uchar *tdataptr;
ulong tframelen, timestamp, now;
ulong rx_frame_size;
EARSrcPayloadTuple *x;
/* Lower 12 bits of interrupt code specify IFC # */
whichifc = evt & 0xFFF;
NETTRACEMARK(8);
LOGMARK(0);
rx_frame_size = devnet_getrxfsz(whichifc);
//printf("\tRX frame size is %d\n", rx_frame_size);
devnet_recv(&rxbuf[0], rx_frame_size, whichifc);
memmove(&src_addr[0], &rxbuf[0], 16);
/* Get payload and length */
tdataptr = &rxbuf[0]+37;
tframelen = 0;
tframelen |= rxbuf[32] << 24;
tframelen |= rxbuf[33] << 16;
tframelen |= rxbuf[34] << 8;
tframelen |= rxbuf[35];
proto = rxbuf[36];
LOGMARK(1);
NETTRACEMARK(9);
now = devrtc_getusecs();
/* DEBUG */
printf("\t\tDAM node [%s]: Just got frame from node [%s], length [%lu], proto [%s]\n",
dam_myID, &src_addr[0], tframelen,
(proto == PROTO_DAM_INTERNAL ? "DAM" : (proto == PROTO_EAR ? "EAR" : "UNKNOWN")));
if (proto == PROTO_EAR)
{
NETTRACEMARK(12);
LOGMARK(18);
x = ear_recv(Ear, tdataptr, tframelen);
if (x != NULL)
{
int id;
char tmp;
char *ep = &tmp;
id = strtol(dam_leaderID, &ep, 0);
/* */
/* Immediately send response w/ no payload */
/* but with DAM leader ID in nxthdr field */
/* (we ignore incoming payload which is in */
/* x->payload). Cache sink for use whenever */
/* we are in DAM cluster */
/* */
strncpy(dam_sink, x->src, DAM_ID_LEN);
if (dam_participating)
{
ear_response(Ear, dam_sink, NULL, 0, id);
}
//printf("\n\n\nsent EAR response = [%d] (dam_leader = [%s])\n\n\n",
// (dam_leaderID[0] - '0')*10 + (dam_leaderID[1]-'0'), dam_leaderID);
}
free(x);
LOGMARK(19);
NETTRACEMARK(13);
return;
}
/* There will always be some old frames, since broadcast leads to loops */
memmove(×tamp, tdataptr, 4);
if ((now - timestamp) > dam_period)
{
printf("Frame is too old (timestamp @ %d usecs) discarding...\n", timestamp);
return;
}
if (proto == PROTO_DAM_INTERNAL)
{
LOGMARK(14);
dam_rcv_pkt(tdataptr);
LOGMARK(15);
}
return;
}