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PPP, PPPoS: Use const void* instead of u8_t* in pppos_output_cb_fn()

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There is no good reason why this function should take a non-const
pointer, as the output callback should never modify what lwIP gives it.
While changing that also switch to a more generic `void*` instead of
"byte".
This commit is contained in:
Freddie Chopin 2019-12-05 22:12:45 +01:00 committed by Sylvain Rochet
parent 7f91a71eca
commit b2d1fc119d
4 changed files with 6 additions and 6 deletions
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4
contrib/examples/example_app/test.c
View File

@ -258,11 +258,11 @@ pppLinkStatusCallback(ppp_pcb *pcb, int errCode, void *ctx)
#if PPPOS_SUPPORT
static u32_t
ppp_output_cb(ppp_pcb *pcb, u8_t *data, u32_t len, void *ctx)
ppp_output_cb(ppp_pcb *pcb, const void *data, u32_t len, void *ctx)
{
LWIP_UNUSED_ARG(pcb);
LWIP_UNUSED_ARG(ctx);
return sio_write(ppp_sio, data, len);
return sio_write(ppp_sio, (u8_t*)data, len);
}
#endif /* PPPOS_SUPPORT */
#endif /* USE_PPP */

4
contrib/examples/ppp/pppos_example.c
View File

@ -156,11 +156,11 @@ ppp_link_status_cb(ppp_pcb *pcb, int err_code, void *ctx)
}
static u32_t
ppp_output_cb(ppp_pcb *pcb, u8_t *data, u32_t len, void *ctx)
ppp_output_cb(ppp_pcb *pcb, const void *data, u32_t len, void *ctx)
{
LWIP_UNUSED_ARG(pcb);
LWIP_UNUSED_ARG(ctx);
return sio_write(ppp_sio, data, len);
return sio_write(ppp_sio, (u8_t*)data, len);
}
#if LWIP_NETIF_STATUS_CALLBACK

2
doc/ppp.txt
View File

@ -195,7 +195,7 @@ static void status_cb(ppp_pcb *pcb, int err_code, void *ctx) {
*
* Return value: len if write succeed
*/
static u32_t output_cb(ppp_pcb *pcb, u8_t *data, u32_t len, void *ctx) {
static u32_t output_cb(ppp_pcb *pcb, const void *data, u32_t len, void *ctx) {
return uart_write(UART, data, len);
}

2
src/include/netif/ppp/pppos.h
View File

@ -58,7 +58,7 @@ enum {
};
/* PPPoS serial output callback function prototype */
typedef u32_t (*pppos_output_cb_fn)(ppp_pcb *pcb, u8_t *data, u32_t len, void *ctx);
typedef u32_t (*pppos_output_cb_fn)(ppp_pcb *pcb, const void *data, u32_t len, void *ctx);
/*
* Extended asyncmap - allows any character to be escaped.