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Add L2 PPP and PPPoE

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This commit is contained in:
Sergio R. Caprile committed 2026-04-01 14:39:28 -03:00
1 parent ae5a2263ac
commit 70650fedcf
23 files changed
+2019 -909
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src/l2_eth.c
+15 -8
View File
@@ -34,8 +34,8 @@ static const uint16_t eth_types[] = {
0x8864 // PPPoE Session Stage
};
void mg_l2_eth_init(struct mg_l2addr *l2addr, uint16_t *mtu,
uint16_t *framesize) {
void mg_l2_eth_init(struct mg_tcpip_if *ifp) {
struct mg_l2addr *l2addr = (struct mg_l2addr *)ifp->mac;
// If MAC is not set, make a random one
if (l2addr->addr.mac[0] == 0 && l2addr->addr.mac[1] == 0 &&
l2addr->addr.mac[2] == 0 && l2addr->addr.mac[3] == 0 &&
@@ -45,8 +45,14 @@ void mg_l2_eth_init(struct mg_l2addr *l2addr, uint16_t *mtu,
MG_INFO(
("MAC not set. Generated random: %M", mg_print_mac, l2addr->addr.mac));
}
*mtu = 1500;
*framesize = 1540;
ifp->mtu = 1500;
ifp->framesize = 1540;
}
bool mg_l2_eth_poll(struct mg_tcpip_if *ifp, bool expired_1000ms) {
(void) ifp;
(void) expired_1000ms;
return true;
}
uint8_t *mg_l2_eth_header(enum mg_l2proto proto, struct mg_l2addr *src,
@@ -58,10 +64,11 @@ uint8_t *mg_l2_eth_header(enum mg_l2proto proto, struct mg_l2addr *src,
return (uint8_t *) (eth + 1);
}
size_t mg_l2_eth_footer(size_t len, uint8_t *frame) {
struct eth *eth = (struct eth *) frame;
// nothing to do; there is no len field in Ethernet, CRC is hw-calculated
return len + sizeof(*eth);
size_t mg_l2_eth_footer(size_t len, uint8_t *cur) {
// there is no len field in Ethernet, CRC is hw-calculated; pad to 64 - CRC
size_t ethlen = len + sizeof(struct eth);
(void) cur;
return ethlen >= 60 ? ethlen : 60;
}
struct mg_l2addr *mg_l2_eth_mapip(enum mg_l2addrtype addrtype,