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PPP, MPPE, removed "compression" stats

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We don't need "compression" stats on a encryption protocols, as commented
"Since every frame grows by MPPE_OVHD + 2 bytes, this is always going
to look bad ... and the longer the link is up the worse it will get."
This commit is contained in:
Sylvain Rochet 2015-03-29 01:09:31 +01:00
parent a6c101aeb8
commit c759639603
1 changed files with 0 additions and 30 deletions
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30
src/netif/ppp/mppe.c
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@ -86,7 +86,6 @@ struct ppp_mppe_state {
int sanity_errors; /* take down LCP if too many */
int unit;
int debug;
struct compstat stats;
};
/* struct ppp_mppe_state.bits definitions */
@ -346,26 +345,9 @@ mppe_compress(void *arg, unsigned char *ibuf, unsigned char *obuf,
/* Encrypt packet */
MEMCPY(obuf, ibuf, isize);
arc4_crypt(&state->arc4, obuf, isize);
state->stats.unc_bytes += isize;
state->stats.unc_packets++;
state->stats.comp_bytes += osize;
state->stats.comp_packets++;
return osize;
}
/*
* Since every frame grows by MPPE_OVHD + 2 bytes, this is always going
* to look bad ... and the longer the link is up the worse it will get.
*/
static void mppe_comp_stats(void *arg, struct compstat *stats)
{
struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg;
*stats = state->stats;
}
static int
mppe_decomp_init(void *arg, unsigned char *options, int optlen, int unit,
int hdrlen, int mru, int debug)
@ -545,11 +527,6 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
MEMCPY(obuf+1, ibuf+1, isize-1);
arc4_crypt(&state->arc4, obuf+1, isize-1);
state->stats.unc_bytes += osize;
state->stats.unc_packets++;
state->stats.comp_bytes += isize;
state->stats.comp_packets++;
/* good packet credit */
state->sanity_errors >>= 1;
@ -571,11 +548,6 @@ static void mppe_incomp(void *arg, unsigned char *ibuf, int icnt)
PPPDEBUG(LOG_DEBUG,
("mppe_incomp[%d]: incompressible (unencrypted) data! "
"(proto %04x)\n", state->unit, PPP_PROTOCOL(ibuf)));
state->stats.inc_bytes += icnt;
state->stats.inc_packets++;
state->stats.unc_bytes += icnt;
state->stats.unc_packets++;
}
/*************************************************************
@ -592,14 +564,12 @@ static struct compressor ppp_mppe = {
.comp_init = mppe_comp_init,
.comp_reset = mppe_comp_reset,
.compress = mppe_compress,
.comp_stat = mppe_comp_stats,
.decomp_alloc = mppe_alloc,
.decomp_free = mppe_free,
.decomp_init = mppe_decomp_init,
.decomp_reset = mppe_decomp_reset,
.decompress = mppe_decompress,
.incomp = mppe_incomp,
.decomp_stat = mppe_comp_stats,
.owner = THIS_MODULE,
.comp_extra = MPPE_PAD,
};