[src/trunk]: src/sys/net Send Up event in tlu action of LCP

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

details:   https://anonhg.NetBSD.org/src/rev/8813e4a26555
branches:  trunk
changeset: 1021486:8813e4a26555
user:      yamaguchi <yamaguchi%NetBSD.org@localhost>
date:      Tue Jun 01 05:16:46 2021 +0000

description:
Send Up event in tlu action of LCP

When LCP is stopping, the layer send Down event and Close event
(Down -> Close). To align the sequence, Up event is moved
before Open event.

diffstat:

 sys/net/if_spppsubr.c |  78 ++++++++++++++++++++++++++++----------------------
 1 files changed, 43 insertions(+), 35 deletions(-)

diffs (136 lines):

diff -r c281f9d90fe8 -r 8813e4a26555 sys/net/if_spppsubr.c
--- a/sys/net/if_spppsubr.c     Tue Jun 01 05:11:22 2021 +0000
+++ b/sys/net/if_spppsubr.c     Tue Jun 01 05:16:46 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_spppsubr.c,v 1.255 2021/06/01 05:11:22 yamaguchi Exp $       */
+/*     $NetBSD: if_spppsubr.c,v 1.256 2021/06/01 05:16:46 yamaguchi Exp $       */
 
 /*
  * Synchronous PPP/Cisco link level subroutines.
@@ -41,7 +41,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_spppsubr.c,v 1.255 2021/06/01 05:11:22 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_spppsubr.c,v 1.256 2021/06/01 05:16:46 yamaguchi Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_inet.h"
@@ -1898,6 +1898,7 @@
                break;
        case STATE_CLOSED:
                sp->scp[cp->protoidx].rst_counter = sp->lcp.max_configure;
+               sp->lcp.protos |= (1 << cp->protoidx);
                (cp->scr)(sp);
                sppp_cp_change_state(cp, sp, STATE_REQ_SENT);
                break;
@@ -3114,6 +3115,7 @@
 sppp_lcp_tlu(struct sppp *sp)
 {
        struct ifnet *ifp;
+       struct sppp_cp *scp;
        int i;
        bool going_up;
 
@@ -3160,26 +3162,28 @@
        else
                sppp_change_phase(sp, SPPP_PHASE_NETWORK);
 
-       /*
-        * Open all authentication protocols.  This is even required
-        * if we already proceeded to network phase, since it might be
-        * that remote wants us to authenticate, so we might have to
-        * send a PAP request.  Undesired authentication protocols
-        * don't do anything when they get an Open event.
-        */
-       for (i = 0; i < IDX_COUNT; i++)
-               if ((cps[i])->flags & CP_AUTH) {
-                       sppp_wq_add(sp->wq_cp,
-                           &sp->scp[(cps[i])->protoidx].work_open);
-               }
-
-       if (sp->pp_phase == SPPP_PHASE_NETWORK) {
-               /* Notify all NCPs. */
-               for (i = 0; i < IDX_COUNT; i++)
-                       if ((cps[i])->flags & CP_NCP) {
-                       sppp_wq_add(sp->wq_cp,
-                           &sp->scp[(cps[i])->protoidx].work_open);
-                       }
+
+       for (i = 0; i < IDX_COUNT; i++) {
+               scp = &sp->scp[(cps[i])->protoidx];
+
+               if (((cps[i])->flags & CP_LCP) == 0)
+                       sppp_wq_add(sp->wq_cp, &scp->work_up);
+
+               /*
+                * Open all authentication protocols.  This is even required
+                * if we already proceeded to network phase, since it might be
+                * that remote wants us to authenticate, so we might have to
+                * send a PAP request.  Undesired authentication protocols
+                * don't do anything when they get an Open event.
+                */
+               if ((cps[i])->flags & CP_AUTH)
+                       sppp_wq_add(sp->wq_cp, &scp->work_open);
+
+               /* Open all NCPs. */
+               if (sp->pp_phase == SPPP_PHASE_NETWORK &&
+                   ((cps[i])->flags & CP_NCP) != 0) {
+                       sppp_wq_add(sp->wq_cp, &scp->work_open);
+               }
        }
 
        /* notify low-level driver of state change */
@@ -3190,7 +3194,8 @@
 sppp_lcp_tld(struct sppp *sp)
 {
        struct ifnet *ifp;
-       int i, pi, phase;
+       struct sppp_cp *scp;
+       int i, phase;
 
        KASSERT(SPPP_WLOCKED(sp));
 
@@ -3221,15 +3226,19 @@
         * describes it.
         */
        for (i = 0; i < IDX_COUNT; i++) {
-               pi = (cps[i])->protoidx;
-               if (((cps[i])->flags & CP_LCP) == 0) {
-                       /* skip if ncp was not started */
-                       if (phase != SPPP_PHASE_NETWORK &&
-                           ((cps[i])->flags & CP_NCP) != 0)
-                               continue;
-
-                       sppp_wq_add(sp->wq_cp, &sp->scp[pi].work_down);
-                       sppp_wq_add(sp->wq_cp, &sp->scp[pi].work_close);
+               scp = &sp->scp[(cps[i])->protoidx];
+
+               if (((cps[i])->flags & CP_LCP) == 0)
+                       sppp_wq_add(sp->wq_cp, &scp->work_down);
+
+               if ((cps[i])->flags & CP_AUTH) {
+                       sppp_wq_add(sp->wq_cp, &scp->work_close);
+               }
+
+               /* Close all NCPs. */
+               if (phase == SPPP_PHASE_NETWORK &&
+                   ((cps[i])->flags & CP_NCP) != 0) {
+                       sppp_wq_add(sp->wq_cp, &scp->work_close);
                }
        }
 }
@@ -6510,11 +6519,10 @@
 sppp_tls(const struct cp *cp, struct sppp *sp)
 {
 
+       SPPP_DLOG(sp, "%s tls\n", cp->name);
+
        /* notify lcp that is lower layer */
        sp->lcp.protos |= (1 << cp->protoidx);
-
-       if (sp->scp[IDX_LCP].state == STATE_OPENED)
-               sppp_wq_add(sp->wq_cp, &sp->scp[cp->protoidx].work_up);
 }
 
 static void