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Refactor MIP strategy and first driver (CMSIS)

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Sergio R. Caprile committed 2025-04-22 12:55:21 -03:00
1 parent 6f697db49d
commit dceb4beb09
11 files changed
+108 -108
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src/net_builtin.c
+18 -12
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@@ -283,13 +283,13 @@ static void tx_dhcp_request_sel(struct mg_tcpip_if *ifp, uint32_t ip_req,
uint8_t extra = (uint8_t) ((ifp->enable_req_dns ? 1 : 0) +
(ifp->enable_req_sntp ? 1 : 0));
size_t len = strlen(ifp->dhcp_name);
size_t olen = 21 + len + extra + 2 + 1; // Total length of options
#define OPTS_MAXLEN (21 + sizeof(ifp->dhcp_name) + 2 + 2 + 1)
uint8_t opts[OPTS_MAXLEN]; // Allocate options (max size possible)
size_t olen = 21 + len + extra + 2 + 1; // Total length of options
#define OPTS_MAXLEN (21 + sizeof(ifp->dhcp_name) + 2 + 2 + 1)
uint8_t opts[OPTS_MAXLEN]; // Allocate options (max size possible)
uint8_t *p = opts;
assert(olen <= sizeof(opts));
memset(opts, 0, sizeof(opts));
*p++ = 53, *p++ = 1, *p++ = 3; // Type: DHCP request
*p++ = 53, *p++ = 1, *p++ = 3; // Type: DHCP request
*p++ = 54, *p++ = 4, memcpy(p, &ip_srv, 4), p += 4; // DHCP server ID
*p++ = 50, *p++ = 4, memcpy(p, &ip_req, 4), p += 4; // Requested IP
*p++ = 12, *p++ = (uint8_t) (len & 255); // DHCP host
@@ -1090,6 +1090,13 @@ static void mac_resolved(struct mg_connection *c) {
}
}
static void ip4_mcastmac(uint8_t *mac, uint32_t *ip) {
uint8_t mcastp[3] = {0x01, 0x00, 0x5E}; // multicast group MAC
memcpy(mac, mcastp, 3);
memcpy(mac + 3, ((uint8_t *) ip) + 1, 3); // 23 LSb
mac[3] &= 0x7F;
}
void mg_connect_resolved(struct mg_connection *c) {
struct mg_tcpip_if *ifp = c->mgr->ifp;
uint32_t rem_ip;
@@ -1115,10 +1122,7 @@ void mg_connect_resolved(struct mg_connection *c) {
c->is_arplooking = 1;
} else if ((*((uint8_t *) &rem_ip) & 0xE0) == 0xE0) {
struct connstate *s = (struct connstate *) (c + 1); // 224 to 239, E0 to EF
uint8_t mcastp[3] = {0x01, 0x00, 0x5E}; // multicast group
memcpy(s->mac, mcastp, 3);
memcpy(s->mac + 3, ((uint8_t *) &rem_ip) + 1, 3); // 23 LSb
s->mac[3] &= 0x7F;
ip4_mcastmac(s->mac, &rem_ip); // multicast group
mac_resolved(c);
} else {
struct connstate *s = (struct connstate *) (c + 1);
@@ -1221,9 +1225,11 @@ bool mg_send(struct mg_connection *c, const void *buf, size_t len) {
return res;
}
#if MG_TCPIP_MCAST
const uint8_t mcast_addr[6] = {0x01, 0x00, 0x5e, 0x00, 0x00, 0xfb};
void mg_mcast_add(char *ip, MG_SOCKET_TYPE fd) { (void) ip; (void) fd; }
#endif
uint8_t mcast_addr[6] = {0x01, 0x00, 0x5e, 0x00, 0x00, 0xfb};
void mg_multicast_add(struct mg_connection *c, char *ip) {
(void) ip; // ip4_mcastmac(mcast_mac, &ip);
// TODO(): actual IP -> MAC; check database, update
c->mgr->ifp->update_mac_hash_table = true; // mark dirty
}
#endif // MG_ENABLE_TCPIP