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PPP: prepared callbacks from PPP core to low level protocols

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New PPP callback from PPP core to low level protocols, first
step about removing named calls to low level protocols from PPP core.
This commit is contained in:
Sylvain Rochet 2015-02-15 10:18:02 +01:00
parent a5582e0960
commit f8501478f6
7 changed files with 80 additions and 25 deletions
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1
src/include/netif/ppp/ppp.h
View File

@ -358,6 +358,7 @@ struct ppp_pcb_s {
#if PPPOS_SUPPORT
sio_fd_t fd; /* File device ID of port. */
#endif /* PPPOS_SUPPORT */
void (*link_command_cb)(void *pcb, u8_t command);
#if PPPOE_SUPPORT
struct pppoe_softc *pppoe_sc;
#endif /* PPPOE_SUPPORT */

13
src/include/netif/ppp/ppp_impl.h
View File

@ -87,6 +87,16 @@
#define PPP_ESCAPE 0x7d /* Asynchronous Control Escape */
#define PPP_TRANS 0x20 /* Asynchronous transparency modifier */
/*
* Low-level links commands
*/
/* Start a connection (i.e. initiate discovery phase) */
#define PPP_LINK_COMMAND_CONNECT 0
/* End a connection (i.e. initiate disconnect phase) */
#define PPP_LINK_COMMAND_DISCONNECT 1
/* Free link connection */
#define PPP_LINK_COMMAND_FREE 2
/*
* Protocol field values.
*/
@ -370,6 +380,9 @@ int ppp_init(void);
/* Create a new PPP control block */
ppp_pcb *ppp_new(struct netif *pppif, ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
/* Set link callback function */
#define ppp_link_set_callback(ppp, cb) (ppp->link_command_cb = cb)
/* Initiate LCP open request */
void ppp_start(ppp_pcb *pcb);

4
src/include/netif/ppp/pppoe.h
View File

@ -165,10 +165,6 @@ struct pppoe_softc {
ppp_pcb *pppoe_create(struct netif *pppif,
struct netif *ethif,
ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
err_t pppoe_destroy(struct pppoe_softc *sc);
int pppoe_connect(struct pppoe_softc *sc);
void pppoe_disconnect(struct pppoe_softc *sc);
void pppoe_disc_input(struct netif *netif, struct pbuf *p);
void pppoe_data_input(struct netif *netif, struct pbuf *p);

9
src/include/netif/ppp/pppol2tp.h
View File

@ -196,15 +196,6 @@ ppp_pcb *pppol2tp_create(struct netif *pppif,
struct netif *netif, ip_addr_t *ipaddr, u16_t port, u8_t *secret, u8_t secret_len,
ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
/* Destroy a L2TP control block */
err_t pppol2tp_destroy(pppol2tp_pcb *l2tp);
/* Be a LAC, connect to a LNS. */
err_t pppol2tp_connect(pppol2tp_pcb *l2tp);
/* Disconnect */
void pppol2tp_disconnect(pppol2tp_pcb *l2tp);
/* Data packet from PPP to L2TP */
err_t pppol2tp_xmit(pppol2tp_pcb *l2tp, struct pbuf *pb);

12
src/netif/ppp/ppp.c
View File

@ -407,14 +407,14 @@ int ppp_free(ppp_pcb *pcb) {
#if PPPOE_SUPPORT
if (pcb->pppoe_sc) {
pppoe_destroy(pcb->pppoe_sc);
pcb->link_command_cb(pcb->pppoe_sc, PPP_LINK_COMMAND_FREE);
pcb->pppoe_sc = NULL;
}
#endif /* PPPOE_SUPPORT */
#if PPPOL2TP_SUPPORT
if (pcb->l2tp_pcb) {
pppol2tp_destroy(pcb->l2tp_pcb);
pcb->link_command_cb(pcb->l2tp_pcb, PPP_LINK_COMMAND_FREE);
pcb->l2tp_pcb = NULL;
}
#endif /* PPPOL2TP_SUPPORT */
@ -1807,7 +1807,7 @@ static void ppp_over_ethernet_open(ppp_pcb *pcb) {
ao->neg_pcompression = 0;
ao->neg_accompression = 0;
pppoe_connect(pcb->pppoe_sc);
pcb->link_command_cb(pcb->pppoe_sc, PPP_LINK_COMMAND_CONNECT);
}
#endif /* PPPOE_SUPPORT */
@ -1829,7 +1829,7 @@ static void ppp_over_l2tp_open(ppp_pcb *pcb) {
ao->neg_pcompression = 0;
ao->neg_accompression = 0;
pppol2tp_connect(pcb->l2tp_pcb);
pcb->link_command_cb(pcb->l2tp_pcb, PPP_LINK_COMMAND_CONNECT);
}
#endif /* PPPOL2TP_SUPPORT */
@ -1843,12 +1843,12 @@ void ppp_link_terminated(ppp_pcb *pcb) {
#if PPPOE_SUPPORT
if (pcb->pppoe_sc) {
pppoe_disconnect(pcb->pppoe_sc);
pcb->link_command_cb(pcb->pppoe_sc, PPP_LINK_COMMAND_DISCONNECT);
} else
#endif /* PPPOE_SUPPORT */
#if PPPOL2TP_SUPPORT
if (pcb->l2tp_pcb) {
pppol2tp_disconnect(pcb->l2tp_pcb);
pcb->link_command_cb(pcb->l2tp_pcb, PPP_LINK_COMMAND_DISCONNECT);
} else
#endif /* PPPOL2TP_SUPPORT */
{

34
src/netif/ppp/pppoe.c
View File

@ -113,7 +113,13 @@
static char pppoe_error_tmp[PPPOE_ERRORSTRING_LEN];
/* callback called from PPP core */
static void pppoe_link_callback(void *pcb, u8_t command);
/* management routines */
static err_t pppoe_destroy(struct pppoe_softc *sc);
static int pppoe_connect(struct pppoe_softc *sc);
static void pppoe_disconnect(struct pppoe_softc *sc);
static void pppoe_abort_connect(struct pppoe_softc *);
static void pppoe_clear_softc(struct pppoe_softc *, const char *);
@ -167,10 +173,32 @@ pppoe_create(struct netif *pppif,
pppoe_softc_list = sc;
ppp->pppoe_sc = sc;
ppp_link_set_callback(ppp, pppoe_link_callback);
return ppp;
}
err_t
/* Called by PPP core */
static void pppoe_link_callback(void *pcb, u8_t command) {
struct pppoe_softc *sc = (struct pppoe_softc *)pcb;
switch(command) {
case PPP_LINK_COMMAND_CONNECT:
pppoe_connect(sc);
break;
case PPP_LINK_COMMAND_DISCONNECT:
pppoe_disconnect(sc);
break;
case PPP_LINK_COMMAND_FREE:
pppoe_destroy(sc);
break;
default: ;
}
}
static err_t
pppoe_destroy(struct pppoe_softc *sc)
{
struct pppoe_softc *cur, *prev = NULL;
@ -789,7 +817,7 @@ pppoe_timeout(void *arg)
}
/* Start a connection (i.e. initiate discovery phase) */
int
static int
pppoe_connect(struct pppoe_softc *sc)
{
int err;
@ -819,7 +847,7 @@ pppoe_connect(struct pppoe_softc *sc)
}
/* disconnect */
void
static void
pppoe_disconnect(struct pppoe_softc *sc)
{
if (sc->sc_state < PPPOE_STATE_SESSION) {

32
src/netif/ppp/pppol2tp.c
View File

@ -72,6 +72,10 @@
#endif /* PPPOL2TP_AUTH_SUPPORT */
/* Prototypes for procedures local to this file. */
static void pppol2tp_link_callback(void *pcb, u8_t command);
static err_t pppol2tp_destroy(pppol2tp_pcb *l2tp); /* Destroy a L2TP control block */
static err_t pppol2tp_connect(pppol2tp_pcb *l2tp); /* Be a LAC, connect to a LNS. */
static void pppol2tp_disconnect(pppol2tp_pcb *l2tp); /* Disconnect */
static void pppol2tp_input(void *arg, struct udp_pcb *pcb, struct pbuf *p, struct ip_addr *addr, u16_t port);
static void pppol2tp_dispatch_control_packet(pppol2tp_pcb *l2tp, struct ip_addr *addr, u16_t port,
struct pbuf *p, u16_t len, u16_t tunnel_id, u16_t session_id, u16_t ns, u16_t nr);
@ -126,11 +130,33 @@ ppp_pcb *pppol2tp_create(struct netif *pppif,
#endif /* PPPOL2TP_AUTH_SUPPORT */
ppp->l2tp_pcb = l2tp;
ppp_link_set_callback(ppp, pppol2tp_link_callback);
return ppp;
}
/* Called by PPP core */
static void pppol2tp_link_callback(void *pcb, u8_t command) {
pppol2tp_pcb *l2tp = (pppol2tp_pcb *)pcb;
switch(command) {
case PPP_LINK_COMMAND_CONNECT:
pppol2tp_connect(l2tp);
break;
case PPP_LINK_COMMAND_DISCONNECT:
pppol2tp_disconnect(l2tp);
break;
case PPP_LINK_COMMAND_FREE:
pppol2tp_destroy(l2tp);
break;
default: ;
}
}
/* Destroy a L2TP control block */
err_t pppol2tp_destroy(pppol2tp_pcb *l2tp) {
static err_t pppol2tp_destroy(pppol2tp_pcb *l2tp) {
sys_untimeout(pppol2tp_timeout, l2tp);
if (l2tp->udp != NULL) {
@ -141,7 +167,7 @@ err_t pppol2tp_destroy(pppol2tp_pcb *l2tp) {
}
/* Be a LAC, connect to a LNS. */
err_t pppol2tp_connect(pppol2tp_pcb *l2tp) {
static err_t pppol2tp_connect(pppol2tp_pcb *l2tp) {
err_t err;
if (l2tp->phase != PPPOL2TP_STATE_INITIAL) {
@ -176,7 +202,7 @@ err_t pppol2tp_connect(pppol2tp_pcb *l2tp) {
}
/* Disconnect */
void pppol2tp_disconnect(pppol2tp_pcb *l2tp) {
static void pppol2tp_disconnect(pppol2tp_pcb *l2tp) {
if (l2tp->phase < PPPOL2TP_STATE_DATA) {
return;