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added LCP adaptive echo from Debian patches, I like the idea

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This commit is contained in:
Sylvain Rochet 2012-05-17 15:50:15 +02:00
parent eb75ae05c6
commit 54d5ee5562
1 changed files with 25 additions and 0 deletions
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25
src/netif/ppp/lcp.c
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@ -75,6 +75,9 @@ static void lcp_delayed_up __P((void *));
*/ */
int lcp_echo_interval = 0; /* Interval between LCP echo-requests */ int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */ int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
#if PPP_LCP_ADAPTIVE
bool lcp_echo_adaptive = 0; /* request echo only if the link was idle */
#endif
bool lax_recv = 0; /* accept control chars in asyncmap */ bool lax_recv = 0; /* accept control chars in asyncmap */
bool noendpoint = 0; /* don't send/accept endpoint discriminator */ bool noendpoint = 0; /* don't send/accept endpoint discriminator */
@ -153,6 +156,10 @@ static option_t lcp_option_list[] = {
OPT_PRIO }, OPT_PRIO },
{ "lcp-echo-interval", o_int, &lcp_echo_interval, { "lcp-echo-interval", o_int, &lcp_echo_interval,
"Set time in seconds between LCP echo requests", OPT_PRIO }, "Set time in seconds between LCP echo requests", OPT_PRIO },
#if PPP_LCP_ADAPTIVE
{ "lcp-echo-adaptive", o_bool, &lcp_echo_adaptive,
"Suppress LCP echo requests if traffic was received", 1 },
#endif
{ "lcp-restart", o_int, &lcp_fsm[0].timeouttime, { "lcp-restart", o_int, &lcp_fsm[0].timeouttime,
"Set time in seconds between LCP retransmissions", OPT_PRIO }, "Set time in seconds between LCP retransmissions", OPT_PRIO },
{ "lcp-max-terminate", o_int, &lcp_fsm[0].maxtermtransmits, { "lcp-max-terminate", o_int, &lcp_fsm[0].maxtermtransmits,
@ -2325,6 +2332,24 @@ LcpSendEchoRequest (f)
} }
} }
#if PPP_LCP_ADAPTIVE
/*
* If adaptive echos have been enabled, only send the echo request if
* no traffic was received since the last one.
*/
if (lcp_echo_adaptive) {
static unsigned int last_pkts_in = 0;
update_link_stats(f->unit);
link_stats_valid = 0;
if (link_stats.pkts_in != last_pkts_in) {
last_pkts_in = link_stats.pkts_in;
return;
}
}
#endif
/* /*
* Make and send the echo request frame. * Make and send the echo request frame.
*/ */