From adab5daca34dea394625349afd6090e6b69f4558 Mon Sep 17 00:00:00 2001 From: Maxime Bizon Date: Thu, 16 Jan 2020 00:59:55 +0100 Subject: [PATCH 04/18] pppd: add notifier on first LCP packet --- pppd/lcp.c | 8 ++++++++ pppd/pppd.h | 1 + 2 files changed, 9 insertions(+) diff --git a/pppd/lcp.c b/pppd/lcp.c index 625d2f7..e09ae05 100644 --- a/pppd/lcp.c +++ b/pppd/lcp.c @@ -195,9 +195,12 @@ lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ static int lcp_echos_pending = 0; /* Number of outstanding echo msgs */ static int lcp_echo_number = 0; /* ID number of next echo frame */ static int lcp_echo_timer_running = 0; /* set if a timer is running */ +static int lcp_first_pkt = 0; /* set if we received first pkt */ static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */ +struct notifier *first_lcp_notifier = NULL; + /* * Callbacks for fsm code. (CI = Configuration Information) */ @@ -339,6 +342,7 @@ lcp_init(unit) lcp_options *wo = &lcp_wantoptions[unit]; lcp_options *ao = &lcp_allowoptions[unit]; + lcp_first_pkt = 0; f->unit = unit; f->protocol = PPP_LCP; f->callbacks = &lcp_callbacks; @@ -495,6 +499,10 @@ lcp_input(unit, p, len) { fsm *f = &lcp_fsm[unit]; + if (!lcp_first_pkt) { + lcp_first_pkt = 1; + notify(first_lcp_notifier, 0); + } if (f->flags & DELAYED_UP) { f->flags &= ~DELAYED_UP; untimeout(lcp_delayed_up, f); diff --git a/pppd/pppd.h b/pppd/pppd.h index b31b78d..122a042 100644 --- a/pppd/pppd.h +++ b/pppd/pppd.h @@ -277,6 +277,7 @@ extern struct notifier *ipv6_down_notifier; /* IPV6CP has gone down */ extern struct notifier *auth_up_notifier; /* peer has authenticated */ extern struct notifier *link_down_notifier; /* link has gone down */ extern struct notifier *fork_notifier; /* we are a new child process */ +extern struct notifier *first_lcp_notifier; /* first LCP packet received */ /* Values for do_callback and doing_callback */ #define CALLBACK_DIALIN 1 /* we are expecting the call back */ -- 2.17.1