215 lines
6.5 KiB
C
215 lines
6.5 KiB
C
/** @file
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@brief PPP private header
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This is not to be included by the application.
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*/
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/*
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* Copyright (c) 2019 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <net/ppp.h>
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/**
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* FSM flags that control how it operates.
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*/
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#define FSM_RESTART BIT(0) /**< Treat 2nd OPEN as DOWN followed by UP */
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/**
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* PPP packet format.
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*/
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struct ppp_packet {
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uint8_t code;
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uint8_t id;
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uint16_t length;
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} __packed;
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/** Max Terminate-Request transmissions */
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#define MAX_TERMINATE_REQ CONFIG_NET_L2_PPP_MAX_TERMINATE_REQ_RETRANSMITS
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/** Max Configure-Request transmissions */
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#define MAX_CONFIGURE_REQ CONFIG_NET_L2_PPP_MAX_CONFIGURE_REQ_RETRANSMITS
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#define PPP_BUF_ALLOC_TIMEOUT K_MSEC(100)
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/** Protocol handler information. */
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struct ppp_protocol_handler {
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/** Protocol init function */
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void (*init)(struct ppp_context *ctx);
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/** Process a received packet */
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enum net_verdict (*handler)(struct ppp_context *ctx,
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struct net_if *iface,
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struct net_pkt *pkt);
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/** Lower layer up */
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void (*lower_up)(struct ppp_context *ctx);
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/** Lower layer down */
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void (*lower_down)(struct ppp_context *ctx);
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/** Enable this protocol */
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void (*open)(struct ppp_context *ctx);
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/** Disable this protocol */
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void (*close)(struct ppp_context *ctx, const uint8_t *reason);
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/** PPP protocol number */
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uint16_t protocol;
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};
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struct ppp_peer_option_info {
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uint8_t code;
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int (*parse)(struct ppp_fsm *fsm, struct net_pkt *pkt,
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void *user_data);
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int (*nack)(struct ppp_fsm *fsm, struct net_pkt *ret_pkt,
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void *user_data);
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};
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#define PPP_PEER_OPTION(_code, _parse, _nack) \
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{ \
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.code = _code, \
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.parse = _parse, \
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.nack = _nack, \
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}
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int ppp_config_info_req(struct ppp_fsm *fsm,
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struct net_pkt *pkt,
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uint16_t length,
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struct net_pkt *ret_pkt,
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enum ppp_protocol_type protocol,
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const struct ppp_peer_option_info *options_info,
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size_t num_options_info,
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void *user_data);
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#define PPP_PROTO_GET_NAME(proto_name) \
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(ppp_protocol_handler_##proto_name)
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#define PPP_PROTOCOL_REGISTER(name, proto, init_func, proto_handler, \
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proto_lower_up, proto_lower_down, \
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proto_open, proto_close) \
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static const Z_STRUCT_SECTION_ITERABLE(ppp_protocol_handler, \
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PPP_PROTO_GET_NAME(name)) = { \
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.protocol = proto, \
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.init = init_func, \
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.handler = proto_handler, \
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.lower_up = proto_lower_up, \
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.lower_down = proto_lower_down, \
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.open = proto_open, \
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.close = proto_close, \
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}
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void ppp_queue_pkt(struct net_pkt *pkt);
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const char *ppp_phase_str(enum ppp_phase phase);
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const char *ppp_state_str(enum ppp_state state);
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const char *ppp_proto2str(uint16_t proto);
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const char *ppp_pkt_type2str(enum ppp_packet_type type);
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const char *ppp_option2str(enum ppp_protocol_type protocol, int type);
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void ppp_fsm_name_set(struct ppp_fsm *fsm, const char *name);
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#if CONFIG_NET_L2_PPP_LOG_LEVEL < LOG_LEVEL_DBG
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void ppp_change_phase(struct ppp_context *ctx, enum ppp_phase new_phase);
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void ppp_change_state(struct ppp_fsm *fsm, enum ppp_state new_state);
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#else
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void ppp_change_phase_debug(struct ppp_context *ctx,
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enum ppp_phase new_phase,
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const char *caller, int line);
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#define ppp_change_phase(ctx, state) \
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ppp_change_phase_debug(ctx, state, __func__, __LINE__)
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#define ppp_change_state(fsm, state) \
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ppp_change_state_debug(fsm, state, __func__, __LINE__)
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void ppp_change_state_debug(struct ppp_fsm *fsm, enum ppp_state new_state,
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const char *caller, int line);
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#endif
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struct ppp_context *ppp_fsm_ctx(struct ppp_fsm *fsm);
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struct net_if *ppp_fsm_iface(struct ppp_fsm *fsm);
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int ppp_send_pkt(struct ppp_fsm *fsm, struct net_if *iface,
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enum ppp_packet_type type, uint8_t id,
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void *data, uint32_t data_len);
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void ppp_send_proto_rej(struct net_if *iface, struct net_pkt *pkt,
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uint16_t protocol);
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void ppp_fsm_init(struct ppp_fsm *fsm, uint16_t protocol);
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void ppp_fsm_lower_up(struct ppp_fsm *fsm);
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void ppp_fsm_lower_down(struct ppp_fsm *fsm);
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void ppp_fsm_open(struct ppp_fsm *fsm);
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void ppp_fsm_close(struct ppp_fsm *fsm, const uint8_t *reason);
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void ppp_fsm_proto_reject(struct ppp_fsm *fsm);
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enum net_verdict ppp_fsm_input(struct ppp_fsm *fsm, uint16_t proto,
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struct net_pkt *pkt);
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enum net_verdict ppp_fsm_recv_protocol_rej(struct ppp_fsm *fsm,
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uint8_t id,
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struct net_pkt *pkt);
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enum net_verdict ppp_fsm_recv_echo_req(struct ppp_fsm *fsm,
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uint8_t id,
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struct net_pkt *pkt);
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enum net_verdict ppp_fsm_recv_echo_reply(struct ppp_fsm *fsm,
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uint8_t id,
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struct net_pkt *pkt);
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enum net_verdict ppp_fsm_recv_discard_req(struct ppp_fsm *fsm,
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uint8_t id,
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struct net_pkt *pkt);
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const struct ppp_protocol_handler *ppp_lcp_get(void);
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int ppp_parse_options(struct ppp_fsm *fsm, struct net_pkt *pkt,
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uint16_t length,
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int (*parse)(struct net_pkt *pkt, uint8_t code,
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uint8_t len, void *user_data),
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void *user_data);
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void ppp_link_established(struct ppp_context *ctx, struct ppp_fsm *fsm);
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void ppp_link_authenticated(struct ppp_context *ctx);
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void ppp_link_terminated(struct ppp_context *ctx);
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void ppp_link_down(struct ppp_context *ctx);
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void ppp_link_needed(struct ppp_context *ctx);
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void ppp_network_up(struct ppp_context *ctx, int proto);
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void ppp_network_down(struct ppp_context *ctx, int proto);
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void ppp_network_done(struct ppp_context *ctx, int proto);
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void ppp_network_all_down(struct ppp_context *ctx);
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struct ppp_my_option_info {
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uint8_t code;
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int (*conf_req_add)(struct ppp_context *ctx, struct net_pkt *pkt);
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int (*conf_ack_handle)(struct ppp_context *ctx, struct net_pkt *pkt,
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uint8_t oplen);
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int (*conf_nak_handle)(struct ppp_context *ctx, struct net_pkt *pkt,
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uint8_t oplen);
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};
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#define PPP_MY_OPTION(_code, _req_add, _handle_ack, _handle_nak) \
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{ \
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.code = _code, \
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.conf_req_add = _req_add, \
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.conf_ack_handle = _handle_ack, \
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.conf_nak_handle = _handle_nak, \
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}
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struct net_pkt *ppp_my_options_add(struct ppp_fsm *fsm, size_t packet_len);
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int ppp_my_options_parse_conf_ack(struct ppp_fsm *fsm,
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struct net_pkt *pkt,
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uint16_t length);
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int ppp_my_options_parse_conf_nak(struct ppp_fsm *fsm,
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struct net_pkt *pkt,
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uint16_t length);
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int ppp_my_options_parse_conf_rej(struct ppp_fsm *fsm,
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struct net_pkt *pkt,
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uint16_t length);
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uint32_t ppp_my_option_flags(struct ppp_fsm *fsm, uint8_t code);
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static inline bool ppp_my_option_is_acked(struct ppp_fsm *fsm,
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uint8_t code)
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{
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return ppp_my_option_flags(fsm, code) & PPP_MY_OPTION_ACKED;
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}
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