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Diffstat (limited to 'lwip/src/include/netif/ppp/ppp.h')
| -rw-r--r-- | lwip/src/include/netif/ppp/ppp.h | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/lwip/src/include/netif/ppp/ppp.h b/lwip/src/include/netif/ppp/ppp.h new file mode 100644 index 0000000..3d73c36 --- /dev/null +++ b/lwip/src/include/netif/ppp/ppp.h @@ -0,0 +1,698 @@ +/***************************************************************************** +* ppp.h - Network Point to Point Protocol header file. +* +* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. +* portions Copyright (c) 1997 Global Election Systems Inc. +* +* The authors hereby grant permission to use, copy, modify, distribute, +* and license this software and its documentation for any purpose, provided +* that existing copyright notices are retained in all copies and that this +* notice and the following disclaimer are included verbatim in any +* distributions. No written agreement, license, or royalty fee is required +* for any of the authorized uses. +* +* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR +* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +****************************************************************************** +* REVISION HISTORY +* +* 03-01-01 Marc Boucher <marc@mbsi.ca> +* Ported to lwIP. +* 97-11-05 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc. +* Original derived from BSD codes. +*****************************************************************************/ + +#include "netif/ppp/ppp_opts.h" +#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ + +#ifndef PPP_H +#define PPP_H + +#include "lwip/def.h" +#include "lwip/stats.h" +#include "lwip/mem.h" +#include "lwip/netif.h" +#include "lwip/sys.h" +#include "lwip/timeouts.h" +#if PPP_IPV6_SUPPORT +#include "lwip/ip6_addr.h" +#endif /* PPP_IPV6_SUPPORT */ + +#ifdef __cplusplus +extern "C" { +#endif + +/* Disable non-working or rarely used PPP feature, so rarely that we don't want to bloat ppp_opts.h with them */ +#ifndef PPP_OPTIONS +#define PPP_OPTIONS 0 +#endif + +#ifndef PPP_NOTIFY +#define PPP_NOTIFY 0 +#endif + +#ifndef PPP_REMOTENAME +#define PPP_REMOTENAME 0 +#endif + +#ifndef PPP_IDLETIMELIMIT +#define PPP_IDLETIMELIMIT 0 +#endif + +#ifndef PPP_LCP_ADAPTIVE +#define PPP_LCP_ADAPTIVE 0 +#endif + +#ifndef PPP_MAXCONNECT +#define PPP_MAXCONNECT 0 +#endif + +#ifndef PPP_ALLOWED_ADDRS +#define PPP_ALLOWED_ADDRS 0 +#endif + +#ifndef PPP_PROTOCOLNAME +#define PPP_PROTOCOLNAME 0 +#endif + +#ifndef PPP_STATS_SUPPORT +#define PPP_STATS_SUPPORT 0 +#endif + +#ifndef DEFLATE_SUPPORT +#define DEFLATE_SUPPORT 0 +#endif + +#ifndef BSDCOMPRESS_SUPPORT +#define BSDCOMPRESS_SUPPORT 0 +#endif + +#ifndef PREDICTOR_SUPPORT +#define PREDICTOR_SUPPORT 0 +#endif + +/************************* +*** PUBLIC DEFINITIONS *** +*************************/ + +/* + * The basic PPP frame. + */ +#define PPP_HDRLEN 4 /* octets for standard ppp header */ +#define PPP_FCSLEN 2 /* octets for FCS */ + +/* + * Values for phase. + */ +#define PPP_PHASE_DEAD 0 +#define PPP_PHASE_MASTER 1 +#define PPP_PHASE_HOLDOFF 2 +#define PPP_PHASE_INITIALIZE 3 +#define PPP_PHASE_SERIALCONN 4 +#define PPP_PHASE_DORMANT 5 +#define PPP_PHASE_ESTABLISH 6 +#define PPP_PHASE_AUTHENTICATE 7 +#define PPP_PHASE_CALLBACK 8 +#define PPP_PHASE_NETWORK 9 +#define PPP_PHASE_RUNNING 10 +#define PPP_PHASE_TERMINATE 11 +#define PPP_PHASE_DISCONNECT 12 + +/* Error codes. */ +#define PPPERR_NONE 0 /* No error. */ +#define PPPERR_PARAM 1 /* Invalid parameter. */ +#define PPPERR_OPEN 2 /* Unable to open PPP session. */ +#define PPPERR_DEVICE 3 /* Invalid I/O device for PPP. */ +#define PPPERR_ALLOC 4 /* Unable to allocate resources. */ +#define PPPERR_USER 5 /* User interrupt. */ +#define PPPERR_CONNECT 6 /* Connection lost. */ +#define PPPERR_AUTHFAIL 7 /* Failed authentication challenge. */ +#define PPPERR_PROTOCOL 8 /* Failed to meet protocol. */ +#define PPPERR_PEERDEAD 9 /* Connection timeout */ +#define PPPERR_IDLETIMEOUT 10 /* Idle Timeout */ +#define PPPERR_CONNECTTIME 11 /* Max connect time reached */ +#define PPPERR_LOOPBACK 12 /* Loopback detected */ + +/* Whether auth support is enabled at all */ +#define PPP_AUTH_SUPPORT (PAP_SUPPORT || CHAP_SUPPORT || EAP_SUPPORT) + +/************************ +*** PUBLIC DATA TYPES *** +************************/ + +/* + * Other headers require ppp_pcb definition for prototypes, but ppp_pcb + * require some structure definition from other headers as well, we are + * fixing the dependency loop here by declaring the ppp_pcb type then + * by including headers containing necessary struct definition for ppp_pcb + */ +typedef struct ppp_pcb_s ppp_pcb; + +/* Type definitions for BSD code. */ +#ifndef __u_char_defined +typedef unsigned long u_long; +typedef unsigned int u_int; +typedef unsigned short u_short; +typedef unsigned char u_char; +#endif + +#include "fsm.h" +#include "lcp.h" +#if CCP_SUPPORT +#include "ccp.h" +#endif /* CCP_SUPPORT */ +#if MPPE_SUPPORT +#include "mppe.h" +#endif /* MPPE_SUPPORT */ +#if PPP_IPV4_SUPPORT +#include "ipcp.h" +#endif /* PPP_IPV4_SUPPORT */ +#if PPP_IPV6_SUPPORT +#include "ipv6cp.h" +#endif /* PPP_IPV6_SUPPORT */ +#if PAP_SUPPORT +#include "upap.h" +#endif /* PAP_SUPPORT */ +#if CHAP_SUPPORT +#include "chap-new.h" +#endif /* CHAP_SUPPORT */ +#if EAP_SUPPORT +#include "eap.h" +#endif /* EAP_SUPPORT */ +#if VJ_SUPPORT +#include "vj.h" +#endif /* VJ_SUPPORT */ + +/* Link status callback function prototype */ +typedef void (*ppp_link_status_cb_fn)(ppp_pcb *pcb, int err_code, void *ctx); + +/* + * PPP configuration. + */ +typedef struct ppp_settings_s { + +#if PPP_SERVER && PPP_AUTH_SUPPORT + unsigned int auth_required :1; /* Peer is required to authenticate */ + unsigned int null_login :1; /* Username of "" and a password of "" are acceptable */ +#endif /* PPP_SERVER && PPP_AUTH_SUPPORT */ +#if PPP_REMOTENAME + unsigned int explicit_remote :1; /* remote_name specified with remotename opt */ +#endif /* PPP_REMOTENAME */ +#if PAP_SUPPORT + unsigned int refuse_pap :1; /* Don't proceed auth. with PAP */ +#endif /* PAP_SUPPORT */ +#if CHAP_SUPPORT + unsigned int refuse_chap :1; /* Don't proceed auth. with CHAP */ +#endif /* CHAP_SUPPORT */ +#if MSCHAP_SUPPORT + unsigned int refuse_mschap :1; /* Don't proceed auth. with MS-CHAP */ + unsigned int refuse_mschap_v2 :1; /* Don't proceed auth. with MS-CHAPv2 */ +#endif /* MSCHAP_SUPPORT */ +#if EAP_SUPPORT + unsigned int refuse_eap :1; /* Don't proceed auth. with EAP */ +#endif /* EAP_SUPPORT */ +#if LWIP_DNS + unsigned int usepeerdns :1; /* Ask peer for DNS adds */ +#endif /* LWIP_DNS */ + unsigned int persist :1; /* Persist mode, always try to open the connection */ +#if PRINTPKT_SUPPORT + unsigned int hide_password :1; /* Hide password in dumped packets */ +#endif /* PRINTPKT_SUPPORT */ + unsigned int noremoteip :1; /* Let him have no IP address */ + unsigned int lax_recv :1; /* accept control chars in asyncmap */ + unsigned int noendpoint :1; /* don't send/accept endpoint discriminator */ +#if PPP_LCP_ADAPTIVE + unsigned int lcp_echo_adaptive :1; /* request echo only if the link was idle */ +#endif /* PPP_LCP_ADAPTIVE */ +#if MPPE_SUPPORT + unsigned int require_mppe :1; /* Require MPPE (Microsoft Point to Point Encryption) */ + unsigned int refuse_mppe_40 :1; /* Allow MPPE 40-bit mode? */ + unsigned int refuse_mppe_128 :1; /* Allow MPPE 128-bit mode? */ + unsigned int refuse_mppe_stateful :1; /* Allow MPPE stateful mode? */ +#endif /* MPPE_SUPPORT */ + + u16_t listen_time; /* time to listen first (ms), waiting for peer to send LCP packet */ + +#if PPP_IDLETIMELIMIT + u16_t idle_time_limit; /* Disconnect if idle for this many seconds */ +#endif /* PPP_IDLETIMELIMIT */ +#if PPP_MAXCONNECT + u32_t maxconnect; /* Maximum connect time (seconds) */ +#endif /* PPP_MAXCONNECT */ + +#if PPP_AUTH_SUPPORT + /* auth data */ + const char *user; /* Username for PAP */ + const char *passwd; /* Password for PAP, secret for CHAP */ +#if PPP_REMOTENAME + char remote_name[MAXNAMELEN + 1]; /* Peer's name for authentication */ +#endif /* PPP_REMOTENAME */ + +#if PAP_SUPPORT + u8_t pap_timeout_time; /* Timeout (seconds) for auth-req retrans. */ + u8_t pap_max_transmits; /* Number of auth-reqs sent */ +#if PPP_SERVER + u8_t pap_req_timeout; /* Time to wait for auth-req from peer */ +#endif /* PPP_SERVER */ +#endif /* PAP_SUPPPORT */ + +#if CHAP_SUPPORT + u8_t chap_timeout_time; /* Timeout (seconds) for retransmitting req */ + u8_t chap_max_transmits; /* max # times to send challenge */ +#if PPP_SERVER + u8_t chap_rechallenge_time; /* Time to wait for auth-req from peer */ +#endif /* PPP_SERVER */ +#endif /* CHAP_SUPPPORT */ + +#if EAP_SUPPORT + u8_t eap_req_time; /* Time to wait (for retransmit/fail) */ + u8_t eap_allow_req; /* Max Requests allowed */ +#if PPP_SERVER + u8_t eap_timeout_time; /* Time to wait (for retransmit/fail) */ + u8_t eap_max_transmits; /* Max Requests allowed */ +#endif /* PPP_SERVER */ +#endif /* EAP_SUPPORT */ + +#endif /* PPP_AUTH_SUPPORT */ + + u8_t fsm_timeout_time; /* Timeout time in seconds */ + u8_t fsm_max_conf_req_transmits; /* Maximum Configure-Request transmissions */ + u8_t fsm_max_term_transmits; /* Maximum Terminate-Request transmissions */ + u8_t fsm_max_nak_loops; /* Maximum number of nak loops tolerated */ + + u8_t lcp_loopbackfail; /* Number of times we receive our magic number from the peer + before deciding the link is looped-back. */ + u8_t lcp_echo_interval; /* Interval between LCP echo-requests */ + u8_t lcp_echo_fails; /* Tolerance to unanswered echo-requests */ + +} ppp_settings; + +#if PPP_SERVER +struct ppp_addrs { +#if PPP_IPV4_SUPPORT + ip4_addr_t our_ipaddr, his_ipaddr, netmask; +#if LWIP_DNS + ip4_addr_t dns1, dns2; +#endif /* LWIP_DNS */ +#endif /* PPP_IPV4_SUPPORT */ +#if PPP_IPV6_SUPPORT + ip6_addr_t our6_ipaddr, his6_ipaddr; +#endif /* PPP_IPV6_SUPPORT */ +}; +#endif /* PPP_SERVER */ + +/* + * PPP interface control block. + */ +struct ppp_pcb_s { + ppp_settings settings; + const struct link_callbacks *link_cb; + void *link_ctx_cb; + void (*link_status_cb)(ppp_pcb *pcb, int err_code, void *ctx); /* Status change callback */ +#if PPP_NOTIFY_PHASE + void (*notify_phase_cb)(ppp_pcb *pcb, u8_t phase, void *ctx); /* Notify phase callback */ +#endif /* PPP_NOTIFY_PHASE */ + void *ctx_cb; /* Callbacks optional pointer */ + struct netif *netif; /* PPP interface */ + u8_t phase; /* where the link is at */ + u8_t err_code; /* Code indicating why interface is down. */ + + /* flags */ +#if PPP_IPV4_SUPPORT + unsigned int ask_for_local :1; /* request our address from peer */ + unsigned int ipcp_is_open :1; /* haven't called np_finished() */ + unsigned int ipcp_is_up :1; /* have called ipcp_up() */ + unsigned int if4_up :1; /* True when the IPv4 interface is up. */ +#if 0 /* UNUSED - PROXY ARP */ + unsigned int proxy_arp_set :1; /* Have created proxy arp entry */ +#endif /* UNUSED - PROXY ARP */ +#endif /* PPP_IPV4_SUPPORT */ +#if PPP_IPV6_SUPPORT + unsigned int ipv6cp_is_up :1; /* have called ip6cp_up() */ + unsigned int if6_up :1; /* True when the IPv6 interface is up. */ +#endif /* PPP_IPV6_SUPPORT */ + unsigned int lcp_echo_timer_running :1; /* set if a timer is running */ +#if VJ_SUPPORT + unsigned int vj_enabled :1; /* Flag indicating VJ compression enabled. */ +#endif /* VJ_SUPPORT */ +#if CCP_SUPPORT + unsigned int ccp_all_rejected :1; /* we rejected all peer's options */ +#endif /* CCP_SUPPORT */ +#if MPPE_SUPPORT + unsigned int mppe_keys_set :1; /* Have the MPPE keys been set? */ +#endif /* MPPE_SUPPORT */ + +#if PPP_AUTH_SUPPORT + /* auth data */ +#if PPP_SERVER && defined(HAVE_MULTILINK) + char peer_authname[MAXNAMELEN + 1]; /* The name by which the peer authenticated itself to us. */ +#endif /* PPP_SERVER && defined(HAVE_MULTILINK) */ + u16_t auth_pending; /* Records which authentication operations haven't completed yet. */ + u16_t auth_done; /* Records which authentication operations have been completed. */ + +#if PAP_SUPPORT + upap_state upap; /* PAP data */ +#endif /* PAP_SUPPORT */ + +#if CHAP_SUPPORT + chap_client_state chap_client; /* CHAP client data */ +#if PPP_SERVER + chap_server_state chap_server; /* CHAP server data */ +#endif /* PPP_SERVER */ +#endif /* CHAP_SUPPORT */ + +#if EAP_SUPPORT + eap_state eap; /* EAP data */ +#endif /* EAP_SUPPORT */ +#endif /* PPP_AUTH_SUPPORT */ + + fsm lcp_fsm; /* LCP fsm structure */ + lcp_options lcp_wantoptions; /* Options that we want to request */ + lcp_options lcp_gotoptions; /* Options that peer ack'd */ + lcp_options lcp_allowoptions; /* Options we allow peer to request */ + lcp_options lcp_hisoptions; /* Options that we ack'd */ + u16_t peer_mru; /* currently negotiated peer MRU */ + u8_t lcp_echos_pending; /* Number of outstanding echo msgs */ + u8_t lcp_echo_number; /* ID number of next echo frame */ + + u8_t num_np_open; /* Number of network protocols which we have opened. */ + u8_t num_np_up; /* Number of network protocols which have come up. */ + +#if VJ_SUPPORT + struct vjcompress vj_comp; /* Van Jacobson compression header. */ +#endif /* VJ_SUPPORT */ + +#if CCP_SUPPORT + fsm ccp_fsm; /* CCP fsm structure */ + ccp_options ccp_wantoptions; /* what to request the peer to use */ + ccp_options ccp_gotoptions; /* what the peer agreed to do */ + ccp_options ccp_allowoptions; /* what we'll agree to do */ + ccp_options ccp_hisoptions; /* what we agreed to do */ + u8_t ccp_localstate; /* Local state (mainly for handling reset-reqs and reset-acks). */ + u8_t ccp_receive_method; /* Method chosen on receive path */ + u8_t ccp_transmit_method; /* Method chosen on transmit path */ +#if MPPE_SUPPORT + ppp_mppe_state mppe_comp; /* MPPE "compressor" structure */ + ppp_mppe_state mppe_decomp; /* MPPE "decompressor" structure */ +#endif /* MPPE_SUPPORT */ +#endif /* CCP_SUPPORT */ + +#if PPP_IPV4_SUPPORT + fsm ipcp_fsm; /* IPCP fsm structure */ + ipcp_options ipcp_wantoptions; /* Options that we want to request */ + ipcp_options ipcp_gotoptions; /* Options that peer ack'd */ + ipcp_options ipcp_allowoptions; /* Options we allow peer to request */ + ipcp_options ipcp_hisoptions; /* Options that we ack'd */ +#endif /* PPP_IPV4_SUPPORT */ + +#if PPP_IPV6_SUPPORT + fsm ipv6cp_fsm; /* IPV6CP fsm structure */ + ipv6cp_options ipv6cp_wantoptions; /* Options that we want to request */ + ipv6cp_options ipv6cp_gotoptions; /* Options that peer ack'd */ + ipv6cp_options ipv6cp_allowoptions; /* Options we allow peer to request */ + ipv6cp_options ipv6cp_hisoptions; /* Options that we ack'd */ +#endif /* PPP_IPV6_SUPPORT */ +}; + +/************************ + *** PUBLIC FUNCTIONS *** + ************************/ + +/* + * WARNING: For multi-threads environment, all ppp_set_* functions most + * only be called while the PPP is in the dead phase (i.e. disconnected). + */ + +#if PPP_AUTH_SUPPORT +/* + * Set PPP authentication. + * + * Warning: Using PPPAUTHTYPE_ANY might have security consequences. + * RFC 1994 says: + * + * In practice, within or associated with each PPP server, there is a + * database which associates "user" names with authentication + * information ("secrets"). It is not anticipated that a particular + * named user would be authenticated by multiple methods. This would + * make the user vulnerable to attacks which negotiate the least secure + * method from among a set (such as PAP rather than CHAP). If the same + * secret was used, PAP would reveal the secret to be used later with + * CHAP. + * + * Instead, for each user name there should be an indication of exactly + * one method used to authenticate that user name. If a user needs to + * make use of different authentication methods under different + * circumstances, then distinct user names SHOULD be employed, each of + * which identifies exactly one authentication method. + * + * Default is none auth type, unset (NULL) user and passwd. + */ +#define PPPAUTHTYPE_NONE 0x00 +#define PPPAUTHTYPE_PAP 0x01 +#define PPPAUTHTYPE_CHAP 0x02 +#define PPPAUTHTYPE_MSCHAP 0x04 +#define PPPAUTHTYPE_MSCHAP_V2 0x08 +#define PPPAUTHTYPE_EAP 0x10 +#define PPPAUTHTYPE_ANY 0xff +void ppp_set_auth(ppp_pcb *pcb, u8_t authtype, const char *user, const char *passwd); + +/* + * If set, peer is required to authenticate. This is mostly necessary for PPP server support. + * + * Default is false. + */ +#define ppp_set_auth_required(ppp, boolval) (ppp->settings.auth_required = boolval) +#endif /* PPP_AUTH_SUPPORT */ + +#if PPP_IPV4_SUPPORT +/* + * Set PPP interface "our" and "his" IPv4 addresses. This is mostly necessary for PPP server + * support but it can also be used on a PPP link where each side choose its own IP address. + * + * Default is unset (0.0.0.0). + */ +#define ppp_set_ipcp_ouraddr(ppp, addr) do { ppp->ipcp_wantoptions.ouraddr = ip4_addr_get_u32(addr); \ + ppp->ask_for_local = ppp->ipcp_wantoptions.ouraddr != 0; } while(0) +#define ppp_set_ipcp_hisaddr(ppp, addr) (ppp->ipcp_wantoptions.hisaddr = ip4_addr_get_u32(addr)) +#if LWIP_DNS +/* + * Set DNS server addresses that are sent if the peer asks for them. This is mostly necessary + * for PPP server support. + * + * Default is unset (0.0.0.0). + */ +#define ppp_set_ipcp_dnsaddr(ppp, index, addr) (ppp->ipcp_allowoptions.dnsaddr[index] = ip4_addr_get_u32(addr)) + +/* + * If set, we ask the peer for up to 2 DNS server addresses. Received DNS server addresses are + * registered using the dns_setserver() function. + * + * Default is false. + */ +#define ppp_set_usepeerdns(ppp, boolval) (ppp->settings.usepeerdns = boolval) +#endif /* LWIP_DNS */ +#endif /* PPP_IPV4_SUPPORT */ + +#if MPPE_SUPPORT +/* Disable MPPE (Microsoft Point to Point Encryption). This parameter is exclusive. */ +#define PPP_MPPE_DISABLE 0x00 +/* Require the use of MPPE (Microsoft Point to Point Encryption). */ +#define PPP_MPPE_ENABLE 0x01 +/* Allow MPPE to use stateful mode. Stateless mode is still attempted first. */ +#define PPP_MPPE_ALLOW_STATEFUL 0x02 +/* Refuse the use of MPPE with 40-bit encryption. Conflict with PPP_MPPE_REFUSE_128. */ +#define PPP_MPPE_REFUSE_40 0x04 +/* Refuse the use of MPPE with 128-bit encryption. Conflict with PPP_MPPE_REFUSE_40. */ +#define PPP_MPPE_REFUSE_128 0x08 +/* + * Set MPPE configuration + * + * Default is disabled. + */ +void ppp_set_mppe(ppp_pcb *pcb, u8_t flags); +#endif /* MPPE_SUPPORT */ + +/* + * Wait for up to intval milliseconds for a valid PPP packet from the peer. + * At the end of this time, or when a valid PPP packet is received from the + * peer, we commence negotiation by sending our first LCP packet. + * + * Default is 0. + */ +#define ppp_set_listen_time(ppp, intval) (ppp->settings.listen_time = intval) + +/* + * If set, we will attempt to initiate a connection but if no reply is received from + * the peer, we will then just wait passively for a valid LCP packet from the peer. + * + * Default is false. + */ +#define ppp_set_passive(ppp, boolval) (ppp->lcp_wantoptions.passive = boolval) + +/* + * If set, we will not transmit LCP packets to initiate a connection until a valid + * LCP packet is received from the peer. This is what we usually call the server mode. + * + * Default is false. + */ +#define ppp_set_silent(ppp, boolval) (ppp->lcp_wantoptions.silent = boolval) + +/* + * If set, enable protocol field compression negotiation in both the receive and + * the transmit direction. + * + * Default is true. + */ +#define ppp_set_neg_pcomp(ppp, boolval) (ppp->lcp_wantoptions.neg_pcompression = \ + ppp->lcp_allowoptions.neg_pcompression = boolval) + +/* + * If set, enable Address/Control compression in both the receive and the transmit + * direction. + * + * Default is true. + */ +#define ppp_set_neg_accomp(ppp, boolval) (ppp->lcp_wantoptions.neg_accompression = \ + ppp->lcp_allowoptions.neg_accompression = boolval) + +/* + * If set, enable asyncmap negotiation. Otherwise forcing all control characters to + * be escaped for both the transmit and the receive direction. + * + * Default is true. + */ +#define ppp_set_neg_asyncmap(ppp, boolval) (ppp->lcp_wantoptions.neg_asyncmap = \ + ppp->lcp_allowoptions.neg_asyncmap = boolval) + +/* + * This option sets the Async-Control-Character-Map (ACCM) for this end of the link. + * The ACCM is a set of 32 bits, one for each of the ASCII control characters with + * values from 0 to 31, where a 1 bit indicates that the corresponding control + * character should not be used in PPP packets sent to this system. The map is + * an unsigned 32 bits integer where the least significant bit (00000001) represents + * character 0 and the most significant bit (80000000) represents character 31. + * We will then ask the peer to send these characters as a 2-byte escape sequence. + * + * Default is 0. + */ +#define ppp_set_asyncmap(ppp, intval) (ppp->lcp_wantoptions.asyncmap = intval) + +/* + * Set a PPP interface as the default network interface + * (used to output all packets for which no specific route is found). + */ +#define ppp_set_default(ppp) netif_set_default(ppp->netif) + +#if PPP_NOTIFY_PHASE +/* + * Set a PPP notify phase callback. + * + * This can be used for example to set a LED pattern depending on the + * current phase of the PPP session. + */ +typedef void (*ppp_notify_phase_cb_fn)(ppp_pcb *pcb, u8_t phase, void *ctx); +void ppp_set_notify_phase_callback(ppp_pcb *pcb, ppp_notify_phase_cb_fn notify_phase_cb); +#endif /* PPP_NOTIFY_PHASE */ + +/* + * Initiate a PPP connection. + * + * This can only be called if PPP is in the dead phase. + * + * Holdoff is the time to wait (in seconds) before initiating + * the connection. + * + * If this port connects to a modem, the modem connection must be + * established before calling this. + */ +err_t ppp_connect(ppp_pcb *pcb, u16_t holdoff); + +#if PPP_SERVER +/* + * Listen for an incoming PPP connection. + * + * This can only be called if PPP is in the dead phase. + * + * If this port connects to a modem, the modem connection must be + * established before calling this. + */ +err_t ppp_listen(ppp_pcb *pcb); +#endif /* PPP_SERVER */ + +/* + * Initiate the end of a PPP connection. + * Any outstanding packets in the queues are dropped. + * + * Setting nocarrier to 1 close the PPP connection without initiating the + * shutdown procedure. Always using nocarrier = 0 is still recommended, + * this is going to take a little longer time if your link is down, but + * is a safer choice for the PPP state machine. + * + * Return 0 on success, an error code on failure. + */ +err_t ppp_close(ppp_pcb *pcb, u8_t nocarrier); + +/* + * Release the control block. + * + * This can only be called if PPP is in the dead phase. + * + * You must use ppp_close() before if you wish to terminate + * an established PPP session. + * + * Return 0 on success, an error code on failure. + */ +err_t ppp_free(ppp_pcb *pcb); + +/* + * PPP IOCTL commands. + * + * Get the up status - 0 for down, non-zero for up. The argument must + * point to an int. + */ +#define PPPCTLG_UPSTATUS 0 + +/* + * Get the PPP error code. The argument must point to an int. + * Returns a PPPERR_* value. + */ +#define PPPCTLG_ERRCODE 1 + +/* + * Get the fd associated with a PPP over serial + */ +#define PPPCTLG_FD 2 + +/* + * Get and set parameters for the given connection. + * Return 0 on success, an error code on failure. + */ +err_t ppp_ioctl(ppp_pcb *pcb, u8_t cmd, void *arg); + +/* Get the PPP netif interface */ +#define ppp_netif(ppp) (ppp->netif) + +/* Set an lwIP-style status-callback for the selected PPP device */ +#define ppp_set_netif_statuscallback(ppp, status_cb) \ + netif_set_status_callback(ppp->netif, status_cb); + +/* Set an lwIP-style link-callback for the selected PPP device */ +#define ppp_set_netif_linkcallback(ppp, link_cb) \ + netif_set_link_callback(ppp->netif, link_cb); + +#ifdef __cplusplus +} +#endif + +#endif /* PPP_H */ + +#endif /* PPP_SUPPORT */ |