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slipif.c File Reference
SLIP Interface. More...
Go to the source code of this file.
Functions | |
| err_t | slipif_output (struct netif *netif, struct pbuf *p, ip_addr_t *ipaddr) |
| Send a pbuf doing the necessary SLIP encapsulation. | |
| static u32_t | slip_sio_read (sio_fd_t fd, u8_t *data, u32_t len, u8_t block) |
| Static function for easy use of blockig or non-blocking sio_read. | |
| static struct pbuf * | slipif_input (struct netif *netif, u8_t block) |
| Handle the incoming SLIP stream character by character. | |
| static void | slipif_loop_thread (void *nf) |
| The SLIP input thread. | |
| err_t | slipif_init (struct netif *netif) |
| SLIP netif initialization. | |
| void | slipif_poll (struct netif *netif) |
| Polls the serial device and feeds the IP layer with incoming packets. | |
Detailed Description
SLIP Interface.
Definition in file slipif.c.
Function Documentation
| static u32_t slip_sio_read | ( | sio_fd_t | fd, |
| u8_t * | data, | ||
| u32_t | len, | ||
| u8_t | block | ||
| ) | [static] |
Static function for easy use of blockig or non-blocking sio_read.
- Parameters:
-
fd serial device handle data pointer to data buffer for receiving len maximum length (in bytes) of data to receive block if 1, call sio_read; if 0, call sio_tryread
- Returns:
- return value of sio_read of sio_tryread
SLIP netif initialization.
Call the arch specific sio_open and remember the opened device in the state field of the netif.
- Parameters:
-
netif the lwip network interface structure for this slipif
- Returns:
- ERR_OK if serial line could be opened, ERR_MEM if no memory could be allocated, ERR_IF is serial line couldn't be opened
- Note:
- netif->num must contain the number of the serial port to open (0 by default)
Handle the incoming SLIP stream character by character.
Poll the serial layer by calling sio_read() or sio_tryread().
- Parameters:
-
netif the lwip network interface structure for this slipif block if 1, block until data is received; if 0, return when all data from the buffer is received (multiple calls to this function will return a complete packet, NULL is returned before - used for polling)
- Returns:
- The IP packet when SLIP_END is received
| static void slipif_loop_thread | ( | void * | nf ) | [static] |
Send a pbuf doing the necessary SLIP encapsulation.
Uses the serial layer's sio_send()
- Parameters:
-
netif the lwip network interface structure for this slipif p the pbuf chaing packet to send ipaddr the ip address to send the packet to (not used for slipif)
- Returns:
- always returns ERR_OK since the serial layer does not provide return values
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