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PPP, moved out PPPoS code into their own functions, improved ppp.c readability

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This commit is contained in:
Sylvain Rochet 2012-08-25 20:30:14 +02:00
parent 19864a4a08
commit 6144deb6b6
1 changed files with 56 additions and 43 deletions
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99
src/netif/ppp/ppp.c
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@ -182,28 +182,28 @@ struct protent *protocols[] = {
NULL
};
#if PPPOS_SUPPORT
#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & ppp_accm_mask[c & 0x07])
#endif /* PPPOS_SUPPORT */
/* Prototypes for procedures local to this file. */
static void ppp_clear(ppp_pcb *pcb);
static void ppp_do_reopen(void *arg);
static void ppp_start(ppp_pcb *pcb); /** Initiate LCP open request */
#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
static void ppp_receive_wakeup(ppp_pcb *pcb);
#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD */
static void ppp_stop(ppp_pcb *pcb);
static void ppp_hup(ppp_pcb *pcb);
static err_t ppp_netif_init_cb(struct netif *netif);
static err_t ppp_netif_output_ip4(struct netif *netif, struct pbuf *pb, ip_addr_t *ipaddr);
#if PPP_IPV6_SUPPORT
static err_t ppp_netif_output_ip6(struct netif *netif, struct pbuf *pb, ip6_addr_t *ipaddr);
#endif /* PPP_IPV6_SUPPORT */
static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short protocol);
#if PPPOS_SUPPORT
#define ESCAPE_P(accm, c) ((accm)[(c) >> 3] & ppp_accm_mask[c & 0x07])
static void ppp_over_serial_reopen(ppp_pcb *pcb);
static err_t ppp_netif_output_over_serial(ppp_pcb *pcb, struct pbuf *pb, u_short protocol);
static int ppp_write_over_serial(ppp_pcb *pcb, struct pbuf *p);
#if PPP_INPROC_OWNTHREAD
static void ppp_input_thread(void *arg);
static void ppp_receive_wakeup(ppp_pcb *pcb);
#endif /* PPP_INPROC_OWNTHREAD */
static void ppp_drop(ppp_pcb_rx *pcrx);
static void pppos_input_proc(ppp_pcb_rx *pcrx, u_char *s, int l);
@ -213,24 +213,15 @@ static void pppos_input_callback(void *arg);
static void ppp_free_current_input_packet(ppp_pcb_rx *pcrx);
#endif /* PPPOS_SUPPORT */
static err_t ppp_netif_init_cb(struct netif *netif);
static err_t ppp_netif_output_ip4(struct netif *netif, struct pbuf *pb, ip_addr_t *ipaddr);
#if PPP_IPV6_SUPPORT
static err_t ppp_netif_output_ip6(struct netif *netif, struct pbuf *pb, ip6_addr_t *ipaddr);
#endif /* PPP_IPV6_SUPPORT */
static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short protocol);
#if PPPOE_SUPPORT
static void ppp_over_ethernet_reopen(ppp_pcb *pcb);
static err_t ppp_netif_output_over_ethernet(ppp_pcb *pcb, struct pbuf *p, u_short protocol);
/* function called by ppp_write() */
static int ppp_write_over_ethernet(ppp_pcb *pcb, struct pbuf *p);
#endif /* PPPOE_SUPPORT */
#if PPPOL2TP_SUPPORT
static void ppp_over_l2tp_reopen(ppp_pcb *pcb);
static err_t ppp_netif_output_over_l2tp(ppp_pcb *pcb, struct pbuf *p, u_short protocol);
/* function called by ppp_write() */
static int ppp_write_over_l2tp(ppp_pcb *pcb, struct pbuf *p);
#endif /* PPPOL2TP_SUPPORT */
@ -740,7 +731,7 @@ void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
switch(protocol) {
#if PPPOS_SUPPORT && VJ_SUPPORT
#if VJ_SUPPORT
case PPP_VJC_COMP: /* VJ compressed TCP */
PPPDEBUG(LOG_INFO, ("ppp_input[%d]: vj_comp in pbuf len=%d\n", pcb->num, pb->len));
/*
@ -768,7 +759,7 @@ void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
/* Something's wrong so drop it. */
PPPDEBUG(LOG_WARNING, ("ppp_input[%d]: Dropping VJ uncompressed\n", pcb->num));
break;
#endif /* PPPOS_SUPPORT && VJ_SUPPORT */
#endif /* VJ_SUPPORT */
case PPP_IP: /* Internet Protocol */
PPPDEBUG(LOG_INFO, ("ppp_input[%d]: ip in pbuf len=%d\n", pcb->num, pb->len));
@ -1152,11 +1143,6 @@ static err_t ppp_netif_output_ip6(struct netif *netif, struct pbuf *pb, ip6_addr
*/
static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short protocol) {
ppp_pcb *pcb = (ppp_pcb*)netif->state;
#if PPPOS_SUPPORT
u_int fcs_out = PPP_INITFCS;
struct pbuf *head = NULL, *tail = NULL, *p;
u_char c;
#endif /* PPPOS_SUPPORT */
/* Validate parameters. */
/* We let any protocol value go through - it can't hurt us
@ -1192,13 +1178,25 @@ static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short prot
#endif /* PPPOL2TP_SUPPORT */
#if PPPOS_SUPPORT
return ppp_netif_output_over_serial(pcb, pb, protocol);
#endif /* PPPOS_SUPPORT */
return ERR_OK;
}
#if PPPOS_SUPPORT
static err_t ppp_netif_output_over_serial(ppp_pcb *pcb, struct pbuf *pb, u_short protocol) {
u_int fcs_out = PPP_INITFCS;
struct pbuf *head = NULL, *tail = NULL, *p;
u_char c;
/* Grab an output buffer. */
head = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
if (head == NULL) {
PPPDEBUG(LOG_WARNING, ("ppp_netif_output[%d]: first alloc fail\n", pcb->num));
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.drop);
snmp_inc_ifoutdiscards(netif);
snmp_inc_ifoutdiscards(&pcb->netif);
return ERR_MEM;
}
@ -1223,7 +1221,7 @@ static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short prot
PPPDEBUG(LOG_WARNING, ("ppp_netif_output[%d]: bad IP packet\n", pcb->num));
LINK_STATS_INC(link.proterr);
LINK_STATS_INC(link.drop);
snmp_inc_ifoutdiscards(netif);
snmp_inc_ifoutdiscards(&pcb->netif);
pbuf_free(head);
return ERR_VAL;
}
@ -1286,7 +1284,7 @@ static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short prot
pbuf_free(head);
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.drop);
snmp_inc_ifoutdiscards(netif);
snmp_inc_ifoutdiscards(&pcb->netif);
return ERR_MEM;
}
@ -1294,11 +1292,9 @@ static err_t ppp_netif_output(struct netif *netif, struct pbuf *pb, u_short prot
PPPDEBUG(LOG_INFO, ("ppp_netif_output[%d]: proto=0x%"X16_F"\n", pcb->num, protocol));
pppos_put(pcb, head);
#endif /* PPPOS_SUPPORT */
return ERR_OK;
}
#endif /* PPPOS_SUPPORT */
#if PPPOE_SUPPORT
static err_t ppp_netif_output_over_ethernet(ppp_pcb *pcb, struct pbuf *p, u_short protocol) {
@ -1445,14 +1441,6 @@ ppp_ioctl(ppp_pcb *pcb, int cmd, void *arg)
* -1 Failed to write to device
*/
int ppp_write(ppp_pcb *pcb, struct pbuf *p) {
#if PPPOS_SUPPORT
u_char *s = p->payload;
int n = p->len;
u_char c;
u_int fcs_out;
struct pbuf *head, *tail;
#endif /* PPPOS_SUPPORT */
#if PRINTPKT_SUPPORT
ppp_dump_packet("sent", (unsigned char *)p->payload+2, p->len-2);
#endif /* PRINTPKT_SUPPORT */
@ -1470,6 +1458,21 @@ int ppp_write(ppp_pcb *pcb, struct pbuf *p) {
#endif /* PPPOL2TP_SUPPORT */
#if PPPOS_SUPPORT
return ppp_write_over_serial(pcb, p);
#endif /* PPPOS_SUPPORT */
pbuf_free(p);
return PPPERR_NONE;
}
#if PPPOS_SUPPORT
static int ppp_write_over_serial(ppp_pcb *pcb, struct pbuf *p) {
u_char *s = p->payload;
int n = p->len;
u_char c;
u_int fcs_out;
struct pbuf *head, *tail;
head = pbuf_alloc(PBUF_RAW, 0, PBUF_POOL);
if (head == NULL) {
LINK_STATS_INC(link.memerr);
@ -1524,11 +1527,10 @@ int ppp_write(ppp_pcb *pcb, struct pbuf *p) {
PPPDEBUG(LOG_INFO, ("ppp_write[%d]: len=%d\n", pcb->num, head->len));
/* "ppp_write[%d]: %d:%.*H", pd, head->len, LWIP_MIN(head->len * 2, 40), head->payload)); */
pppos_put(pcb, head);
#endif /* PPPOS_SUPPORT */
pbuf_free(p);
return PPPERR_NONE;
}
#endif /* PPPOS_SUPPORT */
#if PPPOE_SUPPORT
static int ppp_write_over_ethernet(ppp_pcb *pcb, struct pbuf *p) {
@ -2032,6 +2034,17 @@ static void ppp_over_l2tp_reopen(ppp_pcb *pcb) {
void ppp_link_down(ppp_pcb *pcb) {
PPPDEBUG(LOG_DEBUG, ("ppp_link_down: unit %d\n", pcb->num));
#if PPPOE_SUPPORT
if (pcb->ethif) {
return;
}
#endif /* PPPOE_SUPPORT */
#if PPPOL2TP_SUPPORT
if (pcb->l2tp_pcb) {
return;
}
#endif /* PPPOL2TP_SUPPORT */
#if PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD
ppp_receive_wakeup(pcb);
#endif /* PPPOS_SUPPORT && PPP_INPROC_OWNTHREAD*/