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https://github.com/cesanta/mongoose.git
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87 lines
3.9 KiB
C
87 lines
3.9 KiB
C
#pragma once
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#include "arch.h"
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#include "net.h"
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#include "queue.h"
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#if defined(MG_ENABLE_TCPIP) && MG_ENABLE_TCPIP
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struct mg_tcpip_if; // Mongoose TCP/IP network interface
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struct mg_tcpip_driver {
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bool (*init)(struct mg_tcpip_if *); // Init driver
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size_t (*tx)(const void *, size_t, struct mg_tcpip_if *); // Transmit frame
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size_t (*rx)(void *buf, size_t len, struct mg_tcpip_if *); // Receive frame
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bool (*up)(struct mg_tcpip_if *); // Up/down status
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};
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typedef void (*mg_tcpip_event_handler_t)(struct mg_tcpip_if *ifp, int ev,
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void *ev_data);
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enum {
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MG_TCPIP_EV_ST_CHG, // state change uint8_t * (&ifp->state)
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MG_TCPIP_EV_DHCP_DNS, // DHCP DNS assignment uint32_t *ipaddr
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MG_TCPIP_EV_DHCP_SNTP, // DHCP SNTP assignment uint32_t *ipaddr
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MG_TCPIP_EV_USER // Starting ID for user events
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};
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// Network interface
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struct mg_tcpip_if {
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uint8_t mac[6]; // MAC address. Must be set to a valid MAC
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uint32_t ip, mask, gw; // IP address, mask, default gateway
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struct mg_str tx; // Output (TX) buffer
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bool enable_dhcp_client; // Enable DCHP client
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bool enable_dhcp_server; // Enable DCHP server
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bool enable_get_gateway; // DCHP server sets client as gateway
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bool enable_req_dns; // DCHP client requests DNS server
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bool enable_req_sntp; // DCHP client requests SNTP server
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bool enable_crc32_check; // Do a CRC check on RX frames and strip it
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bool enable_mac_check; // Do a MAC check on RX frames
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struct mg_tcpip_driver *driver; // Low level driver
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void *driver_data; // Driver-specific data
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mg_tcpip_event_handler_t fn; // User-specified event handler function
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struct mg_mgr *mgr; // Mongoose event manager
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struct mg_queue recv_queue; // Receive queue
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uint16_t mtu; // Interface MTU
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#define MG_TCPIP_MTU_DEFAULT 1500
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// Internal state, user can use it but should not change it
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uint8_t gwmac[6]; // Router's MAC
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uint64_t now; // Current time
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uint64_t timer_1000ms; // 1000 ms timer: for DHCP and link state
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uint64_t lease_expire; // Lease expiration time, in ms
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uint16_t eport; // Next ephemeral port
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volatile uint32_t ndrop; // Number of received, but dropped frames
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volatile uint32_t nrecv; // Number of received frames
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volatile uint32_t nsent; // Number of transmitted frames
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volatile uint32_t nerr; // Number of driver errors
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uint8_t state; // Current state
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#define MG_TCPIP_STATE_DOWN 0 // Interface is down
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#define MG_TCPIP_STATE_UP 1 // Interface is up
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#define MG_TCPIP_STATE_REQ 2 // Interface is up and has requested an IP
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#define MG_TCPIP_STATE_READY 3 // Interface is up and has an IP assigned
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};
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void mg_tcpip_init(struct mg_mgr *, struct mg_tcpip_if *);
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void mg_tcpip_free(struct mg_tcpip_if *);
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void mg_tcpip_qwrite(void *buf, size_t len, struct mg_tcpip_if *ifp);
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extern struct mg_tcpip_driver mg_tcpip_driver_stm32f;
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extern struct mg_tcpip_driver mg_tcpip_driver_w5500;
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extern struct mg_tcpip_driver mg_tcpip_driver_tm4c;
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extern struct mg_tcpip_driver mg_tcpip_driver_stm32h;
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extern struct mg_tcpip_driver mg_tcpip_driver_imxrt;
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extern struct mg_tcpip_driver mg_tcpip_driver_same54;
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extern struct mg_tcpip_driver mg_tcpip_driver_cmsis;
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extern struct mg_tcpip_driver mg_tcpip_driver_ra;
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extern struct mg_tcpip_driver mg_tcpip_driver_xmc;
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extern struct mg_tcpip_driver mg_tcpip_driver_xmc7;
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// Drivers that require SPI, can use this SPI abstraction
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struct mg_tcpip_spi {
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void *spi; // Opaque SPI bus descriptor
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void (*begin)(void *); // SPI begin: slave select low
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void (*end)(void *); // SPI end: slave select high
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uint8_t (*txn)(void *, uint8_t); // SPI transaction: write 1 byte, read reply
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};
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#endif
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