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Use RTL descriptor definition

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logicog
2026-04-24 08:42:00 +02:00
parent baa4e5e142
commit e280ccd2f9
3 changed files with 43 additions and 44 deletions
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rtlplayground.c
+38 -40
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@@ -149,43 +149,40 @@ struct eth_in {
u16_t ether_type;
};
struct rtl_dot1q_frame {
union {
struct {
uint8_t tx_seq;
uint8_t chksum_flags; // 0x7 enables Checksums for frame header, L2 and L3
uint8_t reserved_1 [2];
uint16_t len; // Length is Little Endian
uint8_t reserved_2 [2];
struct uip_eth_addr dst;
struct uip_eth_addr src;
uint16_t tpid;
uint16_t tci;
} q_frame;
struct {
uint8_t padding[VLAN_TAG_SIZE]; // Pad to the size of a RTL-VLAN tag or dot1q-tag
uint8_t tx_seq;
uint8_t chksum_flags; // 0x7 enables Checksums for frame header, L2 and L3
uint8_t reserved_1 [2];
uint16_t len; // Length is Little Endian
uint8_t reserved_2 [2];
struct uip_eth_addr dst;
struct uip_eth_addr src;
} nonq_frame;
};
};
// Dot 1Q tag size is the size of tpid + tci
#define DOT_1Q_TAG_SIZE 4
struct q_frame {
uint8_t tx_seq;
uint8_t chksum_flags; // 0x7 enables Checksums for frame header, L2 and L3
uint8_t reserved_1 [2];
uint16_t len; // Length is Little Endian
uint8_t reserved_2 [2];
struct uip_eth_addr dst;
struct uip_eth_addr src;
uint16_t tpid;
uint16_t tci;
};
struct nonq_frame {
uint8_t padding[DOT_1Q_TAG_SIZE];
uint8_t tx_seq;
uint8_t chksum_flags; // 0x7 enables Checksums for frame header, L2 and L3
uint8_t reserved_1 [2];
uint16_t len; // Length is Little Endian
uint8_t reserved_2 [2];
struct uip_eth_addr dst;
struct uip_eth_addr src;
};
#define ETH_IN ((__xdata struct eth_in *)&uip_buf[0])
#define ETHERTYPE_OFFSET (12 + VLAN_TAG_SIZE + RTL_TAG_SIZE)
// The output frame structure with initial frame descriptor including padding
#define FRAME (((__xdata struct rtl_dot1q_frame *)&uip_buf[0])->nonq_frame)
#define FRAME ((__xdata struct nonq_frame *)&uip_buf[0])
// The output frame structure with 802.1Q field and the padding moved before the buffer-start
#define FRAME_Q (((__xdata struct rtl_dot1q_frame *)&uip_buf[-VLAN_TAG_SIZE])->q_frame)
#define FRAME_Q ((__xdata struct q_frame *)&uip_buf[0])
void isr_timer0(void) __interrupt(1)
{
@@ -613,13 +610,13 @@ void nic_tx_packet(uint16_t ring_ptr)
*/
if (management_vlan) {
SFR_NIC_DATA_U16LE = (uint16_t) uip_buf;
len = FRAME_Q.len;
len = FRAME_Q->len;
/*
(__xdata struct rtl_dot1q_frame *)uip_buf
#define FRAME (((__xdata struct rtl_dot1q_frame *)&uip_buf[0]).nonq_frame)*/
} else {
SFR_NIC_DATA_U16LE = (uint16_t) uip_buf + VLAN_TAG_SIZE;
len = FRAME.len;
len = FRAME->len;
}
#ifdef RXTXDBG
@@ -992,21 +989,21 @@ uint8_t sfp_read_reg(uint8_t slot, uint8_t reg)
void tcpip_output(void)
{
// Add TX-TAG
FRAME.tx_seq = tx_seq++;
FRAME.chksum_flags = 0x07; // Enable all checksums
FRAME.reserved_1[0] = 0x00; FRAME.reserved_1[1] = 0x00;
FRAME.len = uip_len;
FRAME.reserved_2[0] = 0x00; FRAME.reserved_2[1] = 0x00;
FRAME->tx_seq = tx_seq++;
FRAME->chksum_flags = 0x07; // Enable all checksums
FRAME->reserved_1[0] = 0x00; FRAME->reserved_1[1] = 0x00;
FRAME->len = uip_len;
FRAME->reserved_2[0] = 0x00; FRAME->reserved_2[1] = 0x00;
// For the management VLAN we insert an 802.1Q VLAN tag
if (management_vlan) {
// Shift the ethernet header before the HW type including the rtl_frame_desc to the beginning of uip_buf
// to allow space to insert the dot 1Q tag
for (uint8_t i = 0; i < sizeof(struct rtl_dot1q_frame) - (VLAN_TAG_SIZE * 2); i++)
for (uint8_t i = 0; i < sizeof(struct q_frame) - DOT_1Q_TAG_SIZE; i++)
uip_buf[i] = uip_buf[i + DOT_1Q_TAG_SIZE];
FRAME_Q.len += DOT_1Q_TAG_SIZE;
FRAME_Q.tpid = HTONS(0x8100); // Change ether-type to Dot1Q
FRAME_Q.tci = HTONS(management_vlan);
FRAME_Q->len += DOT_1Q_TAG_SIZE;
FRAME_Q->tpid = HTONS(0x8100); // Change ether-type to Dot1Q
FRAME_Q->tci = HTONS(management_vlan);
}
reg_read_m(RTL837X_REG_CPU_TX_CURR_PKT);
@@ -1062,6 +1059,7 @@ void handle_rx(void)
print_string(" RX-VLAN: "); print_short(rx_packet_vlan); write_char('\n');
print_string(" RX dst: "); print_byte(uip_buf[0]); print_byte(uip_buf[1]); print_byte(uip_buf[2]);
print_byte(uip_buf[3]); print_byte(uip_buf[4]); print_byte(uip_buf[5]); write_char('\n');
print_string(" MGMT-VLAN: "); print_short(management_vlan); write_char('\n');
#endif
if (stpEnabled && 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) {
@@ -2014,7 +2012,7 @@ void main(void)
uip_arp_init();
httpd_init();
management_vlan = 0; // Disabled
management_vlan = 1; // Default management VLAN is 1
setup_i2c();
setup_sfp_gpio();