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White Rabbit core collection
Commit d0ccc3a2 authored by Grzegorz Daniluk's avatar Grzegorz Daniluk
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sim/eth_packet: gen() can now generate a frame of a set length, not only random

parent fa94683c
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Showing with 39 additions and 45 deletions
sim/eth_packet.svh
View file @ d0ccc3a2
......@@ -319,55 +319,49 @@ class EthPacketGenerator;
endfunction // random_bvec
function automatic EthPacket gen();
EthPacket pkt;
int len;
function automatic EthPacket gen(int set_len = 0);
EthPacket pkt;
int len;
pkt = new;
if (r_flags & SMAC) pkt.src = random_bvec(6); else pkt.src = template.src;
if (r_flags & DMAC) pkt.dst = random_bvec(6); else pkt.dst = template.dst;
pkt.ethertype = (r_flags & ETHERTYPE ? $dist_uniform(seed, 0, 1<<16) : template.ethertype);
pkt.is_q = template.is_q;
pkt.vid = template.vid;
pkt.pcp = template.pcp;
pkt.has_smac = template.has_smac;
pkt = new;
// $display("Size min %d max %d", min_size, max_size);
if (r_flags & SMAC) pkt.src = random_bvec(6); else pkt.src = template.src;
if (r_flags & DMAC) pkt.dst = random_bvec(6); else pkt.dst = template.dst;
len = $dist_uniform(seed, min_size, max_size);
pkt.ethertype = (r_flags & ETHERTYPE ? $dist_uniform(seed, 0, 1<<16) : template.ethertype);
pkt.is_q = template.is_q;
pkt.vid = template.vid;
pkt.pcp = template.pcp;
pkt.has_smac = template.has_smac;
if((len & 1) && (r_flags & EVEN_LENGTH))
len++;
if(r_flags & PAYLOAD) pkt.payload = random_bvec(len);
else if(r_flags & SEQ_PAYLOAD) pkt.payload = seq_payload(len);
else pkt.payload = template.payload;
if(set_len > 0) len = set_len;
else len = $dist_uniform(seed, min_size, max_size);
if(r_flags & SEQ_ID)
begin
pkt.payload[0] = cur_seq_id & 'hff;
pkt.payload[1] = (cur_seq_id>>8) & 'hff;
pkt.payload[2] = (cur_seq_id>>16) & 'hff;
pkt.payload[3] = (cur_seq_id>>24) & 'hff;
cur_seq_id++;
end
if(r_flags & TX_OOB)
begin
pkt.ts.frame_id = m_current_frame_id++;
pkt.oob_type = TX_FID;
end
return pkt;
endfunction
if((len & 1) && (r_flags & EVEN_LENGTH))
len++;
if(r_flags & PAYLOAD) pkt.payload = random_bvec(len);
else if(r_flags & SEQ_PAYLOAD) pkt.payload = seq_payload(len);
else pkt.payload = template.payload;
if(r_flags & SEQ_ID)
begin
pkt.payload[0] = cur_seq_id & 'hff;
pkt.payload[1] = (cur_seq_id>>8) & 'hff;
pkt.payload[2] = (cur_seq_id>>16) & 'hff;
pkt.payload[3] = (cur_seq_id>>24) & 'hff;
cur_seq_id++;
end
if(r_flags & TX_OOB)
begin
pkt.ts.frame_id = m_current_frame_id++;
pkt.oob_type = TX_FID;
end
return pkt;
endfunction
task set_template(EthPacket pkt);
template = pkt;
......@@ -404,4 +398,4 @@ endclass // PacketSource
`endif
\ No newline at end of file
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