422     if (protp->protocol != PPP_LCP && protp->lowerdown != NULL) {  in link_down()
425     if (protp->protocol < 0xC000 && protp->close != NULL) {  in link_down()
459     if (protp->protocol != PPP_LCP && protp->enabled_flag && protp->lowerup != NULL) {  in link_established()
552     if (protp->protocol < 0xC000 && protp->enabled_flag && protp->open != NULL) {  in network_phase()
554       if (protp->protocol != PPP_CCP) {  in network_phase()
568  * The peer has failed to authenticate himself using `protocol'.
571 auth_peer_fail(int unit, u16_t protocol)  in auth_peer_fail()  argument
573   LWIP_UNUSED_ARG(protocol);  in auth_peer_fail()
575   AUTHDEBUG(LOG_INFO, ("auth_peer_fail: %d proto=%X\n", unit, protocol));  in auth_peer_fail()
585  * The peer has been successfully authenticated using `protocol'.
588 auth_peer_success(int unit, u16_t protocol, char *name, int namelen)  in auth_peer_success()  argument
592   AUTHDEBUG(LOG_INFO, ("auth_peer_success: %d proto=%X\n", unit, protocol));  in auth_peer_success()
593   switch (protocol) {  in auth_peer_success()
601       AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));  in auth_peer_success()
624  * We have failed to authenticate ourselves to the peer using `protocol'.
627 auth_withpeer_fail(int unit, u16_t protocol)  in auth_withpeer_fail()  argument
631   LWIP_UNUSED_ARG(protocol);  in auth_withpeer_fail()
633   AUTHDEBUG(LOG_INFO, ("auth_withpeer_fail: %d proto=%X\n", unit, protocol));  in auth_withpeer_fail()
648  * We have successfully authenticated ourselves with the peer using `protocol'.
651 auth_withpeer_success(int unit, u16_t protocol)  in auth_withpeer_success()  argument
655   AUTHDEBUG(LOG_INFO, ("auth_withpeer_success: %d proto=%X\n", unit, protocol));  in auth_withpeer_success()
656   switch (protocol) {  in auth_withpeer_success()
667       AUTHDEBUG(LOG_WARNING, ("auth_peer_success: unknown protocol %x\n", protocol));  in auth_withpeer_success()
683  * np_up - a network protocol has come up.
713  * np_down - a network protocol has gone down.
728  * np_finished - a network protocol has finished using the link.