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eth: Ensure header pointer is wide enough to clear the entire header before halting

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2025-04-26 19:31:51 -07:00
parent be7016991a
commit 3dc7e4821d
6 changed files with 20 additions and 20 deletions
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8
rtl/eth/taxi_axis_xgmii_rx_32.sv
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@@ -123,7 +123,7 @@ logic xgmii_start_d2 = 1'b0;
logic frame_oversize_reg = 1'b0, frame_oversize_next;
logic pre_ok_reg = 1'b0, pre_ok_next;
logic [1:0] hdr_ptr_reg = '0, hdr_ptr_next;
logic [2:0] hdr_ptr_reg = '0, hdr_ptr_next;
logic is_mcast_reg = 1'b0, is_mcast_next;
logic is_bcast_reg = 1'b0, is_bcast_next;
logic is_8021q_reg = 1'b0, is_8021q_next;
@@ -279,12 +279,12 @@ always_comb begin
end
case (hdr_ptr_reg)
2'd0: begin
3'd0: begin
is_mcast_next = xgmii_rxd_d2[0];
is_bcast_next = &xgmii_rxd_d2;
end
2'd1: is_bcast_next = is_bcast_reg && &xgmii_rxd_d2[15:0];
2'd3: is_8021q_next = {xgmii_rxd_d2[7:0], xgmii_rxd_d2[15:8]} == 16'h8100;
3'd1: is_bcast_next = is_bcast_reg && &xgmii_rxd_d2[15:0];
3'd3: is_8021q_next = {xgmii_rxd_d2[7:0], xgmii_rxd_d2[15:8]} == 16'h8100;
default: begin
// do nothing
end