global: use SyncFIFO instead of Buffer

example_designs/targets/udp.py

@@ -1,7 +1,5 @@
 from liteeth.common import *
 
-from litex.soc.interconnect.stream_packet import Buffer
-
 from targets.base import BaseSoC
 
 
@@ -19,7 +17,7 @@ class UDPSoC(BaseSoC):
 
     def add_udp_loopback(self, port, dw, depth, name=None):
         port = self.core.udp.crossbar.get_port(port, dw)
-        buf = Buffer(eth_udp_user_description(dw), depth//(dw//8), 8)
+        buf = stream.SyncFIFO(eth_udp_user_description(dw), depth//(dw//8))
         if name is None:
             self.submodules += buf
         else:

liteeth/core/icmp.py

@@ -1,6 +1,6 @@
 from liteeth.common import *
 
-from litex.soc.interconnect.stream_packet import Depacketizer, Packetizer, Buffer
+from litex.soc.interconnect.stream_packet import Depacketizer, Packetizer
 
 
 # icmp tx
@@ -127,7 +127,7 @@ class LiteEthICMPEcho(Module):
         # # #
 
         # TODO: optimize ressources (no need to store parameters as datas)
-        self.submodules.buffer = Buffer(eth_icmp_user_description(8), 128, 2)
+        self.submodules.buffer = stream.SyncFIFO(eth_icmp_user_description(8), 128)
         self.comb += [
             sink.connect(self.buffer.sink),
             self.buffer.source.connect(source),

liteeth/core/udp.py

@@ -1,7 +1,8 @@
 from liteeth.common import *
 from liteeth.crossbar import LiteEthCrossbar
 
-from litex.soc.interconnect.stream_packet import Depacketizer, Packetizer, Buffer
+from litex.soc.interconnect import stream
+from litex.soc.interconnect.stream_packet import Depacketizer, Packetizer
 
 
 # udp crossbar

liteeth/frontend/etherbone.py

@@ -272,7 +272,7 @@ class LiteEthEtherboneRecordSender(Module):
         # # #
 
         # TODO: optimize ressources (no need to store parameters as datas)
-        pbuffer = Buffer(eth_etherbone_mmap_description(32), buffer_depth)
+        pbuffer = stream.SyncFIFO(eth_etherbone_mmap_description(32), buffer_depth)
         self.submodules += pbuffer
         self.comb += sink.connect(pbuffer.sink)