/**
* z_incomp - add incompressible input data to the history.
* @arg: pointer to private state for the decompressor
* @ibuf: pointer to input packet data
* @icnt: length of input data.
*/
static void z_incomp(void *arg, unsigned char *ibuf, int icnt)
{
struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
int proto, r;
/*
* Check that the protocol is one we handle.
*/
proto = PPP_PROTOCOL(ibuf);
if (proto > 0x3fff || proto == 0xfd || proto == 0xfb)
return;
++state->seqno;
/*
* We start at the either the 1st or 2nd byte of the protocol field,
* depending on whether the protocol value is compressible.
*/
state->strm.next_in = ibuf + 3;
state->strm.avail_in = icnt - 3;
if (proto > 0xff) {
--state->strm.next_in;
++state->strm.avail_in;
}
r = zlib_inflateIncomp(&state->strm);
if (r != Z_OK) {
/* gak! */
if (state->debug) {
printk(KERN_DEBUG "z_incomp%d: inflateIncomp returned %d (%s)\n",
state->unit, r, (state->strm.msg? state->strm.msg: ""));
}
return;
}
/*
* Update stats.
*/
state->stats.inc_bytes += icnt;
state->stats.inc_packets++;
state->stats.unc_bytes += icnt;
state->stats.unc_packets++;
}
static void z_incomp(void *arg, unsigned char *ibuf, int icnt)
{
struct ppp_deflate_state *state = (struct ppp_deflate_state *) arg;
int proto, r;
/*
*/
proto = PPP_PROTOCOL(ibuf);
if (proto > 0x3fff || proto == 0xfd || proto == 0xfb)
return;
++state->seqno;
/*
*/
state->strm.next_in = ibuf + 3;
state->strm.avail_in = icnt - 3;
if (proto > 0xff) {
--state->strm.next_in;
++state->strm.avail_in;
}
r = zlib_inflateIncomp(&state->strm);
if (r != Z_OK) {
/* */
if (state->debug) {
printk(KERN_DEBUG "z_incomp%d: inflateIncomp returned %d (%s)\n",
state->unit, r, (state->strm.msg? state->strm.msg: ""));
}
return;
}
/*
*/
state->stats.inc_bytes += icnt;
state->stats.inc_packets++;
state->stats.unc_bytes += icnt;
state->stats.unc_packets++;
}
