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PPP: moved netif out of PPP control block

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Users might want to share a netif control block between an Ethernet
interface and a PPPoS interface (I want actually) in case PPP is just
used as redundancy if Ethernet is down (eg. PPPoS GPRS fail over).

Moved netif out of PPP control block in a similar way it is currently
done for Ethernet interfaces. Furthermore, this is a first step on
removing the "new/create/free/delete" API which is awful but currently
necessary to handle fail over from PPPoX to another PPPoX (eg. from PPoE
on xDSL to PPPoS on GPRS fail over) without free()ing the netif which
might be used on udp_sendto() or L2TP VPN links.
This commit is contained in:
Sylvain Rochet
2015-02-14 20:51:35 +01:00
parent 604a92dc3d
commit 3dcfd7ba41
4 changed files with 60 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

99
src/netif/ppp/ppp.c
View File

@@ -237,7 +237,7 @@ int ppp_init(void) {
}
/* Create a new PPP session. */
ppp_pcb *ppp_new(void) {
ppp_pcb *ppp_new(struct netif *pppif) {
ppp_pcb *pcb;
pcb = (ppp_pcb*)memp_malloc(MEMP_PPP_PCB);
@@ -287,7 +287,8 @@ ppp_pcb *ppp_new(void) {
pcb->settings.fsm_max_term_transmits = FSM_DEFMAXTERMREQS;
pcb->settings.fsm_max_nak_loops = FSM_DEFMAXNAKLOOPS;
if (!netif_add(&pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
pcb->netif = pppif;
if (!netif_add(pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
&pcb->addrs.his_ipaddr, (void *)pcb, ppp_netif_init_cb, NULL)) {
memp_free(MEMP_PPP_PCB, pcb);
PPPDEBUG(LOG_ERR, ("ppp_new[%d]: netif_add failed\n", pcb->num));
@@ -299,7 +300,7 @@ ppp_pcb *ppp_new(void) {
}
void ppp_set_default(ppp_pcb *pcb) {
netif_set_default(&pcb->netif);
netif_set_default(pcb->netif);
}
void ppp_set_auth(ppp_pcb *pcb, u8_t authtype, const char *user, const char *passwd) {
@@ -579,7 +580,7 @@ int ppp_delete(ppp_pcb *pcb) {
PPPDEBUG(LOG_DEBUG, ("ppp_delete: unit %d\n", pcb->num));
netif_remove(&pcb->netif);
netif_remove(pcb->netif);
if( (err = ppp_free(pcb)) != PPPERR_NONE) {
return err;
}
@@ -683,8 +684,8 @@ void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
}
LINK_STATS_INC(link.recv);
snmp_inc_ifinucastpkts(&pcb->netif);
snmp_add_ifinoctets(&pcb->netif, pb->tot_len);
snmp_inc_ifinucastpkts(pcb->netif);
snmp_add_ifinoctets(pcb->netif, pb->tot_len);
/*
* Toss all non-LCP packets unless LCP is OPEN.
@@ -730,7 +731,7 @@ void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
* pass the result to IP.
*/
if (vj_uncompress_tcp(&pb, &pcb->vj_comp) >= 0) {
ip_input(pb, &pcb->netif);
ip_input(pb, pcb->netif);
return;
}
/* Something's wrong so drop it. */
@@ -744,7 +745,7 @@ void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
* the packet to IP.
*/
if (vj_uncompress_uncomp(pb, &pcb->vj_comp) >= 0) {
ip_input(pb, &pcb->netif);
ip_input(pb, pcb->netif);
return;
}
/* Something's wrong so drop it. */
@@ -754,13 +755,13 @@ void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
case PPP_IP: /* Internet Protocol */
PPPDEBUG(LOG_INFO, ("ppp_input[%d]: ip in pbuf len=%d\n", pcb->num, pb->len));
ip_input(pb, &pcb->netif);
ip_input(pb, pcb->netif);
return;
#if PPP_IPV6_SUPPORT
case PPP_IPV6: /* Internet Protocol Version 6 */
PPPDEBUG(LOG_INFO, ("ppp_input[%d]: ip6 in pbuf len=%d\n", pcb->num, pb->len));
ip6_input(pb, &pcb->netif);
ip6_input(pb, pcb->netif);
return;
#endif /* PPP_IPV6_SUPPORT */
@@ -814,7 +815,7 @@ void ppp_input(ppp_pcb *pcb, struct pbuf *pb) {
drop:
LINK_STATS_INC(link.drop);
snmp_inc_ifindiscards(&pcb->netif);
snmp_inc_ifindiscards(pcb->netif);
out:
pbuf_free(pb);
@@ -954,14 +955,14 @@ pppos_put(ppp_pcb *pcb, struct pbuf *nb)
("PPP pppos_put: incomplete sio_write(fd:%"SZT_F", len:%d, c: 0x%"X8_F") c = %d\n", (size_t)pcb->fd, b->len, c, c));
LINK_STATS_INC(link.err);
pcb->last_xmit = 0; /* prepend PPP_FLAG to next packet */
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
pbuf_free(nb);
return;
}
}
snmp_add_ifoutoctets(&pcb->netif, nb->tot_len);
snmp_inc_ifoutucastpkts(&pcb->netif);
snmp_add_ifoutoctets(pcb->netif, nb->tot_len);
snmp_inc_ifoutucastpkts(pcb->netif);
pbuf_free(nb);
LINK_STATS_INC(link.xmit);
}
@@ -1083,7 +1084,7 @@ static err_t ppp_netif_output_over_serial(ppp_pcb *pcb, struct pbuf *pb, u_short
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(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return ERR_MEM;
}
@@ -1108,7 +1109,7 @@ static err_t ppp_netif_output_over_serial(ppp_pcb *pcb, struct pbuf *pb, u_short
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(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
pbuf_free(head);
return ERR_VAL;
}
@@ -1171,7 +1172,7 @@ static err_t ppp_netif_output_over_serial(ppp_pcb *pcb, struct pbuf *pb, u_short
pbuf_free(head);
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.drop);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return ERR_MEM;
}
@@ -1197,7 +1198,7 @@ static err_t ppp_netif_output_over_ethernet(ppp_pcb *pcb, struct pbuf *p, u_shor
if(!pb) {
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.proterr);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return ERR_MEM;
}
@@ -1217,12 +1218,12 @@ static err_t ppp_netif_output_over_ethernet(ppp_pcb *pcb, struct pbuf *p, u_shor
if( (err = pppoe_xmit(pcb->pppoe_sc, pb)) != ERR_OK) {
LINK_STATS_INC(link.err);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return err;
}
snmp_add_ifoutoctets(&pcb->netif, tot_len);
snmp_inc_ifoutucastpkts(&pcb->netif);
snmp_add_ifoutoctets(pcb->netif, tot_len);
snmp_inc_ifoutucastpkts(pcb->netif);
LINK_STATS_INC(link.xmit);
return ERR_OK;
}
@@ -1243,7 +1244,7 @@ static err_t ppp_netif_output_over_l2tp(ppp_pcb *pcb, struct pbuf *p, u_short pr
if(!pb) {
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.proterr);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return ERR_MEM;
}
@@ -1263,12 +1264,12 @@ static err_t ppp_netif_output_over_l2tp(ppp_pcb *pcb, struct pbuf *p, u_short pr
if( (err = pppol2tp_xmit(pcb->l2tp_pcb, pb)) != ERR_OK) {
LINK_STATS_INC(link.err);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return err;
}
snmp_add_ifoutoctets(&pcb->netif, tot_len);
snmp_inc_ifoutucastpkts(&pcb->netif);
snmp_add_ifoutoctets(pcb->netif, tot_len);
snmp_inc_ifoutucastpkts(pcb->netif);
LINK_STATS_INC(link.xmit);
return ERR_OK;
}
@@ -1375,7 +1376,7 @@ static int ppp_write_over_serial(ppp_pcb *pcb, struct pbuf *p) {
if (head == NULL) {
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.proterr);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
pbuf_free(p);
return PPPERR_ALLOC;
}
@@ -1417,7 +1418,7 @@ static int ppp_write_over_serial(ppp_pcb *pcb, struct pbuf *p) {
pbuf_free(head);
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.proterr);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
pbuf_free(p);
return PPPERR_ALLOC;
}
@@ -1444,7 +1445,7 @@ static int ppp_write_over_ethernet(ppp_pcb *pcb, struct pbuf *p) {
if(!ph) {
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.proterr);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
pbuf_free(p);
return PPPERR_ALLOC;
}
@@ -1459,12 +1460,12 @@ static int ppp_write_over_ethernet(ppp_pcb *pcb, struct pbuf *p) {
if(pppoe_xmit(pcb->pppoe_sc, ph) != ERR_OK) {
LINK_STATS_INC(link.err);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return PPPERR_DEVICE;
}
snmp_add_ifoutoctets(&pcb->netif, (u16_t)tot_len);
snmp_inc_ifoutucastpkts(&pcb->netif);
snmp_add_ifoutoctets(pcb->netif, (u16_t)tot_len);
snmp_inc_ifoutucastpkts(pcb->netif);
LINK_STATS_INC(link.xmit);
return PPPERR_NONE;
}
@@ -1481,7 +1482,7 @@ static int ppp_write_over_l2tp(ppp_pcb *pcb, struct pbuf *p) {
if(!ph) {
LINK_STATS_INC(link.memerr);
LINK_STATS_INC(link.proterr);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
pbuf_free(p);
return PPPERR_ALLOC;
}
@@ -1496,12 +1497,12 @@ static int ppp_write_over_l2tp(ppp_pcb *pcb, struct pbuf *p) {
if(pppol2tp_xmit(pcb->l2tp_pcb, ph) != ERR_OK) {
LINK_STATS_INC(link.err);
snmp_inc_ifoutdiscards(&pcb->netif);
snmp_inc_ifoutdiscards(pcb->netif);
return PPPERR_DEVICE;
}
snmp_add_ifoutoctets(&pcb->netif, (u16_t)tot_len);
snmp_inc_ifoutucastpkts(&pcb->netif);
snmp_add_ifoutoctets(pcb->netif, (u16_t)tot_len);
snmp_inc_ifoutucastpkts(pcb->netif);
LINK_STATS_INC(link.xmit);
return PPPERR_NONE;
}
@@ -1545,7 +1546,7 @@ ppp_drop(ppp_pcb_rx *pcrx)
#endif /* VJ_SUPPORT */
LINK_STATS_INC(link.drop);
snmp_inc_ifindiscards(&pcb->netif);
snmp_inc_ifindiscards(pcb->netif);
}
/** PPPoS input helper struct, must be packed since it is stored
@@ -1650,7 +1651,7 @@ pppos_input(ppp_pcb *pcb, u_char *s, int l)
PPPDEBUG(LOG_ERR, ("pppos_input[%d]: tcpip_callback() failed, dropping packet\n", pcb->num));
pbuf_free(inp);
LINK_STATS_INC(link.drop);
snmp_inc_ifindiscards(&pcb->netif);
snmp_inc_ifindiscards(pcb->netif);
}
#else /* PPP_INPROC_MULTITHREADED */
ppp_input(pcb, inp);
@@ -1813,7 +1814,7 @@ static void pppos_input_callback(void *arg) {
drop:
LINK_STATS_INC(link.drop);
snmp_inc_ifindiscards(&pcb->netif);
snmp_inc_ifindiscards(pcb->netif);
pbuf_free(pb);
}
#endif /* PPP_INPROC_MULTITHREADED */
@@ -1992,7 +1993,7 @@ void ppp_link_terminated(ppp_pcb *pcb) {
void
ppp_set_netif_statuscallback(ppp_pcb *pcb, netif_status_callback_fn status_callback)
{
netif_set_status_callback(&pcb->netif, status_callback);
netif_set_status_callback(pcb->netif, status_callback);
}
#endif /* LWIP_NETIF_STATUS_CALLBACK */
@@ -2007,7 +2008,7 @@ ppp_set_netif_statuscallback(ppp_pcb *pcb, netif_status_callback_fn status_callb
void
ppp_set_netif_linkcallback(ppp_pcb *pcb, netif_status_callback_fn link_callback)
{
netif_set_link_callback(&pcb->netif, link_callback);
netif_set_link_callback(pcb->netif, link_callback);
}
#endif /* LWIP_NETIF_LINK_CALLBACK */
@@ -2194,10 +2195,10 @@ int cdns(ppp_pcb *pcb, u32_t ns1, u32_t ns2) {
*/
int sifup(ppp_pcb *pcb) {
netif_set_addr(&pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
netif_set_addr(pcb->netif, &pcb->addrs.our_ipaddr, &pcb->addrs.netmask,
&pcb->addrs.his_ipaddr);
netif_set_up(&pcb->netif);
netif_set_up(pcb->netif);
pcb->if_up = 1;
pcb->err_code = PPPERR_NONE;
@@ -2225,7 +2226,7 @@ int sifdown(ppp_pcb *pcb) {
#endif /* PPP_IPV6_SUPPORT */
) {
/* make sure the netif status callback is called */
netif_set_down(&pcb->netif);
netif_set_down(pcb->netif);
}
PPPDEBUG(LOG_DEBUG, ("sifdown: unit %d: err_code=%d\n", pcb->num, pcb->err_code));
return 1;
@@ -2237,10 +2238,10 @@ int sifdown(ppp_pcb *pcb) {
*/
int sif6up(ppp_pcb *pcb) {
ip6_addr_copy(pcb->netif.ip6_addr[0], pcb->addrs.our6_ipaddr);
netif_ip6_addr_set_state(&pcb->netif, 0, IP6_ADDR_PREFERRED);
ip6_addr_copy(pcb->netif->ip6_addr[0], pcb->addrs.our6_ipaddr);
netif_ip6_addr_set_state(pcb->netif, 0, IP6_ADDR_PREFERRED);
netif_set_up(&pcb->netif);
netif_set_up(pcb->netif);
pcb->if6_up = 1;
pcb->err_code = PPPERR_NONE;
@@ -2263,7 +2264,7 @@ int sif6down(ppp_pcb *pcb) {
/* set the interface down if IPv4 is down as well */
if (!pcb->if_up) {
/* make sure the netif status callback is called */
netif_set_down(&pcb->netif);
netif_set_down(pcb->netif);
}
PPPDEBUG(LOG_DEBUG, ("sif6down: unit %d: err_code=%d\n", pcb->num, pcb->err_code));
return 1;
@@ -2285,7 +2286,7 @@ int sifnpmode(ppp_pcb *pcb, int proto, enum NPmode mode) {
*/
void netif_set_mtu(ppp_pcb *pcb, int mtu) {
pcb->netif.mtu = mtu;
pcb->netif->mtu = mtu;
}
/*
@@ -2293,7 +2294,7 @@ void netif_set_mtu(ppp_pcb *pcb, int mtu) {
*/
int netif_get_mtu(ppp_pcb *pcb) {
return pcb->netif.mtu;
return pcb->netif->mtu;
}
/********************************************************************