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authorA. Wilcox <AWilcox@Wilcox-Tech.com>2019-05-10 00:24:51 +0000
committerA. Wilcox <AWilcox@Wilcox-Tech.com>2019-05-10 00:24:51 +0000
commitd950a50ac6855d2a49328247ad0e6e9933547d33 (patch)
tree13e27624a878ce2688d0172afc1ee18171a92b8c /user/ppp/34_all_lcp-echo-adaptive.patch
parent70e535f4073f219b6905fe82326ac1563d5c09ad (diff)
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user/ppp: new package
Diffstat (limited to 'user/ppp/34_all_lcp-echo-adaptive.patch')
-rw-r--r--user/ppp/34_all_lcp-echo-adaptive.patch56
1 files changed, 56 insertions, 0 deletions
diff --git a/user/ppp/34_all_lcp-echo-adaptive.patch b/user/ppp/34_all_lcp-echo-adaptive.patch
new file mode 100644
index 000000000..6faf19a27
--- /dev/null
+++ b/user/ppp/34_all_lcp-echo-adaptive.patch
@@ -0,0 +1,56 @@
+--- ppp-2.4.5/pppd/lcp.c
++++ ppp-2.4.5/pppd/lcp.c
+@@ -73,6 +73,7 @@
+ */
+ int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
+ int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
++bool lcp_echo_adaptive = 0; /* request echo only if the link was idle */
+ bool lax_recv = 0; /* accept control chars in asyncmap */
+ bool noendpoint = 0; /* don't send/accept endpoint discriminator */
+
+@@ -151,6 +152,8 @@
+ OPT_PRIO },
+ { "lcp-echo-interval", o_int, &lcp_echo_interval,
+ "Set time in seconds between LCP echo requests", OPT_PRIO },
++ { "lcp-echo-adaptive", o_bool, &lcp_echo_adaptive,
++ "Suppress LCP echo requests if traffic was received", 1 },
+ { "lcp-restart", o_int, &lcp_fsm[0].timeouttime,
+ "Set time in seconds between LCP retransmissions", OPT_PRIO },
+ { "lcp-max-terminate", o_int, &lcp_fsm[0].maxtermtransmits,
+@@ -2322,6 +2325,22 @@
+ }
+
+ /*
++ * 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;
++ }
++ }
++
++ /*
+ * Make and send the echo request frame.
+ */
+ if (f->state == OPENED) {
+--- ppp-2.4.5/pppd/pppd.8
++++ ppp-2.4.5/pppd/pppd.8
+@@ -549,6 +549,11 @@
+ dynamic IP address option (i.e. set /proc/sys/net/ipv4/ip_dynaddr to
+ 1) in demand mode if the local address changes.
+ .TP
++.B lcp\-echo\-adaptive
++If this option is used with the \fIlcp\-echo\-failure\fR option then
++pppd will send LCP echo\-request frames only if no traffic was received
++from the peer since the last echo\-request was sent.
++.TP
+ .B lcp\-echo\-failure \fIn
+ If this option is given, pppd will presume the peer to be dead
+ if \fIn\fR LCP echo\-requests are sent without receiving a valid LCP