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Add STP packet identification

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logicog
2025-08-30 08:29:25 +02:00
parent 963d53335c
commit 83dcd22863
1 changed files with 14 additions and 6 deletions
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rtlplayground.c
+14 -6
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@@ -90,6 +90,8 @@ __xdata uint8_t linkbits_last[4];
__xdata uint8_t sfp_pins_last;
#define ETHERTYPE_OFFSET (12 + VLAN_TAG_SIZE + RTL_TAG_SIZE)
void isr_timer0(void) __interrupt(1)
{
TR0 = 0; // Stop timer 0
@@ -779,9 +781,8 @@ void handle_rx(void)
ring_ptr |= sfr_data[3];
ring_ptr <<= 3;
nic_rx_header(ring_ptr);
__xdata uint8_t *ptr = rx_headers;
#ifdef RXTXDBG
__xdata uint8_t *ptr = rx_headers;
print_string("RX on port "); print_byte(rx_headers[3] & 0xf);
print_string(": ");
for (uint8_t i = 0; i < 8; i++) {
@@ -803,8 +804,8 @@ void handle_rx(void)
sfr_data[3] = 0x1;
reg_write_m(RTL837X_REG_RX_DONE);
uip_len = (((uint16_t)rx_headers[5]) << 8) | rx_headers[4];
// write_char('>'); print_byte(uip_buf[12 + VLAN_TAG_SIZE + RTL_TAG_SIZE]); write_char('<');
// write_char('>'); print_byte(uip_buf[13 + VLAN_TAG_SIZE + RTL_TAG_SIZE]); write_char('<');
// write_char('>'); print_byte(uip_buf[ETHERTYPE_OFFSET]); write_char('<');
// write_char('>'); print_byte(uip_buf[ETHERTYPE_OFFSET + 1]); write_char('<');
// Check for ARP packet
rx_packet_vlan = uip_buf[12 + RTL_TAG_SIZE + 2] & 0xf;
rx_packet_vlan <<= 8;
@@ -812,12 +813,19 @@ void handle_rx(void)
#ifdef RXTXDBG
print_string(" RX-VLAN: "); print_short(rx_packet_vlan); write_char('\n');
#endif
if (uip_buf[12 + VLAN_TAG_SIZE + RTL_TAG_SIZE] == 0x08 && uip_buf[13 + VLAN_TAG_SIZE + RTL_TAG_SIZE] == 0x06) {
if (uip_buf[0] == 0x01 && uip_buf[1] == 0x80 && uip_buf[2] == 0xc2 // STP packet?
&& uip_buf[3] == 0x00 && uip_buf[4] == 0x00 && uip_buf[5] == 0x00) {
print_string("STP: \n");
for (uint8_t i = 0; i < 80; i++) {
print_byte(uip_buf[i]);
write_char(' ');
}
} else if (uip_buf[ETHERTYPE_OFFSET] == 0x08 && uip_buf[ETHERTYPE_OFFSET + 1] == 0x06) { // ARP?
uip_arp_arpin();
if (uip_len) {
tcpip_output();
}
} else if (uip_buf[12 + VLAN_TAG_SIZE + RTL_TAG_SIZE] == 0x08 && uip_buf[13 + VLAN_TAG_SIZE + RTL_TAG_SIZE] == 0x00) {
} else if (uip_buf[ETHERTYPE_OFFSET] == 0x08 && uip_buf[ETHERTYPE_OFFSET + 1] == 0x00) {
uip_arp_ipin();
uip_input();
if (uip_len) {