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small performance improvement in download (internet -> customer)

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This commit is contained in:
fendo 2013-02-07 00:00:37 +01:00
parent 9fb78ffe6a
commit b85ea86670
6 changed files with 166 additions and 21 deletions
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79
ppp.c
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@ -2607,6 +2607,85 @@ uint8_t *makeppp(uint8_t *b, int size, uint8_t *p, int l, sessionidt s, tunnelid
return b;
}
// fill in a L2TP message with a PPP frame,
// returns start of PPP frame
//(note: THIS ROUTINE CAN WRITES TO p[-28]).
uint8_t *opt_makeppp(uint8_t *p, int l, sessionidt s, tunnelidt t, uint16_t mtype, uint8_t prio, bundleidt bid, uint8_t mp_bits)
{
uint16_t hdr = 0x0002; // L2TP with no options
uint16_t type = mtype;
uint8_t *b = p;
if (t == TUNNEL_ID_PPPOE)
{
return opt_pppoe_makeppp(p, l, s, t, mtype, prio, bid, mp_bits);
}
// Check whether this session is part of multilink
if (bid)
{
if (bundle[bid].num_of_links > 1)
type = PPPMP; // Change PPP message type to the PPPMP
else
bid = 0;
}
if (bid)
{
// Add the message type if this fragment has the begin bit set
if (mp_bits & MP_BEGIN)
{
b -= 2;
*(uint16_t *) b = htons(mtype); // Message type
}
// Set the sequence number and (B)egin (E)nd flags
if (session[s].mssf)
{
// Set the multilink bits
uint16_t bits_send = mp_bits;
b -= 2;
*(uint16_t *) b = htons((bundle[bid].seq_num_t & 0x0FFF)|bits_send);
}
else
{
b -= 4;
*(uint32_t *) b = htonl(bundle[bid].seq_num_t);
// Set the multilink bits
*b = mp_bits;
}
bundle[bid].seq_num_t++;
}
if (type < 0x100 && session[s].flags & SESSION_PFC)
{
b--;
*b = type;
}
else
{
b -= 2;
*(uint16_t *) b = htons(type);
}
if (type == PPPLCP || !(session[s].flags & SESSION_ACFC))
{
b -= 2;
*(uint16_t *) b = htons(0xFF03); // HDLC header
}
if (prio) hdr |= 0x0100; // set priority bit
b -= 2;
*(uint16_t *) b = htons(session[s].far); // session
b -= 2;
*(uint16_t *) b = htons(tunnel[t].far); // tunnel
b -= 2;
*(uint16_t *) b = htons(hdr);
return b;
}
static int add_lcp_auth(uint8_t *b, int size, int authtype)
{
int len = 0;