[src/trunk]: src/sys/net Add a function for RTR and RTA event

[yamaguchi <yamaguchi%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5463f679a8f8
branches:  trunk
changeset: 957346:5463f679a8f8
user:      yamaguchi <yamaguchi%NetBSD.org@localhost>
date:      Wed Nov 25 09:26:34 2020 +0000

description:
Add a function for RTR and RTA event

diffstat:

 sys/net/if_spppsubr.c |  143 ++++++++++++++++++++++++++++---------------------
 1 files changed, 81 insertions(+), 62 deletions(-)

diffs (180 lines):

diff -r 4f521ba41485 -r 5463f679a8f8 sys/net/if_spppsubr.c
--- a/sys/net/if_spppsubr.c     Wed Nov 25 09:21:53 2020 +0000
+++ b/sys/net/if_spppsubr.c     Wed Nov 25 09:26:34 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_spppsubr.c,v 1.195 2020/11/25 09:21:53 yamaguchi Exp $       */
+/*     $NetBSD: if_spppsubr.c,v 1.196 2020/11/25 09:26:34 yamaguchi Exp $       */
 
 /*
  * Synchronous PPP/Cisco link level subroutines.
@@ -41,7 +41,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_spppsubr.c,v 1.195 2020/11/25 09:21:53 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_spppsubr.c,v 1.196 2020/11/25 09:26:34 yamaguchi Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_inet.h"
@@ -318,6 +318,8 @@
 static void sppp_rcr_event(const struct cp *, struct sppp *);
 static void sppp_rca_event(const struct cp *, struct sppp *);
 static void sppp_rcn_event(const struct cp *, struct sppp *);
+static void sppp_rtr_event(const struct cp *, struct sppp *);
+static void sppp_rta_event(const struct cp *, struct sppp *);
 
 static void sppp_null(struct sppp *);
 static void sppp_sca_scn(const struct cp *, struct sppp *);
@@ -1565,68 +1567,11 @@
                break;
 
        case TERM_REQ:
-               switch (sp->scp[cp->protoidx].state) {
-               case STATE_ACK_RCVD:
-               case STATE_ACK_SENT:
-                       sppp_cp_change_state(cp, sp, STATE_REQ_SENT);
-                       /* fall through */
-               case STATE_CLOSED:
-               case STATE_STOPPED:
-               case STATE_CLOSING:
-               case STATE_STOPPING:
-               case STATE_REQ_SENT:
-                 sta:
-                       /* Send Terminate-Ack packet. */
-                       if (debug)
-                               log(LOG_DEBUG, "%s: %s send terminate-ack\n",
-                                   ifp->if_xname, cp->name);
-                       sppp_cp_send(sp, cp->proto, TERM_ACK, h->ident, 0, 0);
-                       break;
-               case STATE_OPENED:
-                       (cp->tld)(sp);
-                       sp->scp[cp->protoidx].rst_counter = 0;
-                       sppp_cp_change_state(cp, sp, STATE_STOPPING);
-                       goto sta;
-               default:
-                       printf("%s: %s illegal %s in state %s\n",
-                              ifp->if_xname, cp->name,
-                              sppp_cp_type_name(h->type),
-                              sppp_state_name(sp->scp[cp->protoidx].state));
-                       if_statinc(ifp, if_ierrors);
-               }
+               sp->scp[cp->protoidx].rseq = h->ident;
+               sppp_rtr_event(cp, sp);
                break;
        case TERM_ACK:
-               switch (sp->scp[cp->protoidx].state) {
-               case STATE_CLOSED:
-               case STATE_STOPPED:
-               case STATE_REQ_SENT:
-               case STATE_ACK_SENT:
-                       break;
-               case STATE_CLOSING:
-                       (cp->tlf)(sp);
-                       sppp_cp_change_state(cp, sp, STATE_CLOSED);
-                       sppp_lcp_check_and_close(sp);
-                       break;
-               case STATE_STOPPING:
-                       (cp->tlf)(sp);
-                       sppp_cp_change_state(cp, sp, STATE_STOPPED);
-                       sppp_lcp_check_and_close(sp);
-                       break;
-               case STATE_ACK_RCVD:
-                       sppp_cp_change_state(cp, sp, STATE_REQ_SENT);
-                       break;
-               case STATE_OPENED:
-                       (cp->tld)(sp);
-                       (cp->scr)(sp);
-                       sppp_cp_change_state(cp, sp, STATE_ACK_RCVD);
-                       break;
-               default:
-                       printf("%s: %s illegal %s in state %s\n",
-                              ifp->if_xname, cp->name,
-                              sppp_cp_type_name(h->type),
-                              sppp_state_name(sp->scp[cp->protoidx].state));
-                       if_statinc(ifp, if_ierrors);
-               }
+               sppp_rta_event(cp, sp);
                break;
        case CODE_REJ:
                /* XXX catastrophic rejects (RXJ-) aren't handled yet. */
@@ -2187,6 +2132,80 @@
        }
 }
 
+static void
+sppp_rtr_event(const struct cp *cp, struct sppp *sp)
+{
+       STDDCL;
+
+       switch (sp->scp[cp->protoidx].state) {
+       case STATE_ACK_RCVD:
+       case STATE_ACK_SENT:
+               sppp_cp_change_state(cp, sp, STATE_REQ_SENT);
+               break;
+       case STATE_CLOSED:
+       case STATE_STOPPED:
+       case STATE_CLOSING:
+       case STATE_STOPPING:
+       case STATE_REQ_SENT:
+               break;
+       case STATE_OPENED:
+               (cp->tld)(sp);
+               sp->scp[cp->protoidx].rst_counter = 0;
+               sppp_cp_change_state(cp, sp, STATE_STOPPING);
+               break;
+       default:
+               printf("%s: %s illegal RTR in state %s\n",
+                      ifp->if_xname, cp->name,
+                      sppp_state_name(sp->scp[cp->protoidx].state));
+               if_statinc(ifp, if_ierrors);
+               return;
+       }
+
+       /* Send Terminate-Ack packet. */
+       if (debug)
+               log(LOG_DEBUG, "%s: %s send terminate-ack\n",
+                   ifp->if_xname, cp->name);
+       sppp_cp_send(sp, cp->proto, TERM_ACK,
+           sp->scp[cp->protoidx].rseq, 0, 0);
+}
+
+static void
+sppp_rta_event(const struct cp *cp, struct sppp *sp)
+{
+       struct ifnet *ifp = &sp->pp_if;
+
+       switch (sp->scp[cp->protoidx].state) {
+       case STATE_CLOSED:
+       case STATE_STOPPED:
+       case STATE_REQ_SENT:
+       case STATE_ACK_SENT:
+               break;
+       case STATE_CLOSING:
+               (cp->tlf)(sp);
+               sppp_cp_change_state(cp, sp, STATE_CLOSED);
+               sppp_lcp_check_and_close(sp);
+               break;
+       case STATE_STOPPING:
+               (cp->tlf)(sp);
+               sppp_cp_change_state(cp, sp, STATE_STOPPED);
+               sppp_lcp_check_and_close(sp);
+               break;
+       case STATE_ACK_RCVD:
+               sppp_cp_change_state(cp, sp, STATE_REQ_SENT);
+               break;
+       case STATE_OPENED:
+               (cp->tld)(sp);
+               (cp->scr)(sp);
+               sppp_cp_change_state(cp, sp, STATE_ACK_RCVD);
+               break;
+       default:
+               printf("%s: %s illegal RTA in state %s\n",
+                      ifp->if_xname, cp->name,
+                      sppp_state_name(sp->scp[cp->protoidx].state));
+               if_statinc(ifp, if_ierrors);
+       }
+}
+
 /*
  * Change the state of a control protocol in the state automaton.
  * Takes care of starting/stopping the restart timer.