| Line 33... |
Line 33... |
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output reg ptp_found,
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output reg ptp_found,
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output reg [31:0] ptp_infor
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output reg [31:0] ptp_infor
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);
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);
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// constant values
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parameter c_vlan_tpid_1 = 16'h8100;
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parameter c_vlan_tpid_1 = 16'h8100;
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parameter c_vlan_tpid_2 = 16'h88a8;
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parameter c_vlan_tpid_2 = 16'h88a8;
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parameter c_vlan_tpid_3 = 16'h9100;
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parameter c_vlan_tpid_3 = 16'h9100;
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parameter c_mpls_type_1 = 16'h8847;
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parameter c_mpls_type_2 = 16'h8848;
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parameter c_ipv4_type = 16'h0800;
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parameter c_ipv6_type = 16'h86dd;
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parameter c_ptp2_type = 16'h88f7;
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parameter c_ptp4_port_1 = 16'h013f;
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parameter c_ptp4_port_2 = 16'h0140;
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// buffer data input
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reg [31:0] int_data_d1;
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reg [31:0] int_data_d1;
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always @(posedge rst or posedge clk) begin
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always @(posedge rst or posedge clk) begin
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if (rst) begin
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if (rst) begin
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int_data_d1 <= 32'h00000000;
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int_data_d1 <= 32'h00000000;
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end
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end
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| Line 122... |
Line 134... |
else if (int_valid && bypass_vlan)
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else if (int_valid && bypass_vlan)
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bypass_vlan <= 1'b0;
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bypass_vlan <= 1'b0;
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// bypass mpls
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// bypass mpls
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if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) &&
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if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) &&
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(int_data[31:16]==16'h8847 || int_data[31:16]==16'h8848)) // ether_type == mpls
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(int_data[31:16]==c_mpls_type_1 || int_data[31:16]==c_mpls_type_2)) // ether_type == mpls
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bypass_mpls <= 1'b1;
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bypass_mpls <= 1'b1;
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else if (int_valid && int_cnt==10'd5 && bypass_mpls &&
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else if (int_valid && int_cnt==10'd5 && bypass_mpls &&
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int_data[24]==1'b0) // bottom of label stack == 0
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int_data[24]==1'b0) // bottom of label stack == 0
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bypass_mpls <= 1'b1;
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bypass_mpls <= 1'b1;
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else if (int_valid && bypass_mpls)
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else if (int_valid && bypass_mpls)
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bypass_mpls <= 1'b0;
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bypass_mpls <= 1'b0;
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// bypass ipv4
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// bypass ipv4
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if (int_valid && (int_cnt==10'd4 || (bypass_vlan || bypass_mpls) && int_cnt==10'd5) && bypass_ipv4_cnt==10'd0 &&
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if (int_valid && (int_cnt==10'd4 || (bypass_vlan || bypass_mpls) && int_cnt==10'd5) && bypass_ipv4_cnt==10'd0 &&
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(int_data[31:16]==16'h0800 || bypass_mpls) && int_data[15:12]==4'h4) // ether_type == ipv4, ip_version == 4
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(int_data[31:16]==c_ipv4_type || bypass_mpls) && int_data[15:12]==4'h4) // ether_type == ipv4, ip_version == 4
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bypass_ipv4 <= 1'b1;
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bypass_ipv4 <= 1'b1;
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else if (int_valid && bypass_ipv4_cnt==10'd4)
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else if (int_valid && bypass_ipv4_cnt==10'd4)
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bypass_ipv4 <= 1'b0;
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bypass_ipv4 <= 1'b0;
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// bypass ipv6
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// bypass ipv6
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if (int_valid && (int_cnt==10'd4 || (bypass_vlan || bypass_mpls) && int_cnt==10'd5) && bypass_ipv6_cnt==10'd0 &&
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if (int_valid && (int_cnt==10'd4 || (bypass_vlan || bypass_mpls) && int_cnt==10'd5) && bypass_ipv6_cnt==10'd0 &&
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(int_data[31:16]==16'h86dd || bypass_mpls) && int_data[15:12]==4'h6) // ether_type == ipv6, ip_version == 6
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(int_data[31:16]==c_ipv6_type || bypass_mpls) && int_data[15:12]==4'h6) // ether_type == ipv6, ip_version == 6
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bypass_ipv6 <= 1'b1;
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bypass_ipv6 <= 1'b1;
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else if (int_valid && bypass_ipv6_cnt==10'd9)
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else if (int_valid && bypass_ipv6_cnt==10'd9)
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bypass_ipv6 <= 1'b0;
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bypass_ipv6 <= 1'b0;
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// check if it is udp
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// check if it is udp
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| Line 159... |
Line 171... |
bypass_udp <= 1'b1;
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bypass_udp <= 1'b1;
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else if (int_valid && bypass_udp_cnt==10'd2)
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else if (int_valid && bypass_udp_cnt==10'd2)
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bypass_udp <= 1'b0;
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bypass_udp <= 1'b0;
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// check if it is L2 PTP
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// check if it is L2 PTP
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if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && int_data[31:16]==16'h88F7) // ether_type == ptp
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if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && int_data[31:16]==c_ptp2_type) // ether_type == ptp
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ptp_l2 <= 1'b1;
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ptp_l2 <= 1'b1;
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// check if it is L4 PTP
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// check if it is L4 PTP
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if (int_valid && bypass_udp_cnt==10'd0 && bypass_udp &&
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if (int_valid && bypass_udp_cnt==10'd0 && bypass_udp &&
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(int_data[31:16]==16'h013f || int_data[31:16]==16'h0140)) // udp_dest_port == ptp_event || ptp_general
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(int_data[31:16]==c_ptp4_port_1 || int_data[31:16]==c_ptp4_port_2)) // udp_dest_port == ptp_event || ptp_general
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ptp_l4 <= 1'b1;
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ptp_l4 <= 1'b1;
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// check if it is PTP Event message
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// check if it is PTP Event message
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if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && int_data[31:16]==16'h88F7 &&
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if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && int_data[31:16]==c_ptp2_type &&
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(ptp_msgid_mask[int_data[11: 8]])) // ptp_message_id == ptp_event
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(ptp_msgid_mask[int_data[11: 8]])) // ptp_message_id == ptp_event
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ptp_event <= 1'b1;
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ptp_event <= 1'b1;
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else if (int_valid && int_cnt==10'd5 && bypass_udp_cnt==10'd1 && ptp_l4 &&
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else if (int_valid && int_cnt==10'd5 && bypass_udp_cnt==10'd1 && ptp_l4 &&
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(ptp_msgid_mask[int_data[11: 8]])) // ptp_message_id == ptp_event
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(ptp_msgid_mask[int_data[11: 8]])) // ptp_message_id == ptp_event
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ptp_event <= 1'b1;
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ptp_event <= 1'b1;
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