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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_tx_32.sv
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@@ -135,7 +135,7 @@ logic frame_reg = 1'b0, frame_next;
logic frame_error_reg = 1'b0, frame_error_next;
logic frame_oversize_reg = 1'b0, frame_oversize_next;
logic [MIN_LEN_W-1:0] frame_min_count_reg = '0, frame_min_count_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;
@@ -365,12 +365,12 @@ always_comb begin
end
case (hdr_ptr_reg)
2'd0: begin
3'd0: begin
is_mcast_next = s_tdata_reg[0];
is_bcast_next = &s_tdata_reg;
end
2'd1: is_bcast_next = is_bcast_reg && &s_tdata_reg[15:0];
2'd3: is_8021q_next = {s_tdata_reg[7:0], s_tdata_reg[15:8]} == 16'h8100;
3'd1: is_bcast_next = is_bcast_reg && &s_tdata_reg[15:0];
3'd3: is_8021q_next = {s_tdata_reg[7:0], s_tdata_reg[15:8]} == 16'h8100;
default: begin
// do nothing
end