Revert "Revert "Fathom tcp changes""
diff --git a/config.m4 b/config.m4
index 7825274..af3624c 100644
--- a/config.m4
+++ b/config.m4
@@ -108,6 +108,7 @@
     src/core/lib/http/format_request.cc \
     src/core/lib/http/httpcli.cc \
     src/core/lib/http/parser.cc \
+    src/core/lib/iomgr/buffer_list.cc \
     src/core/lib/iomgr/call_combiner.cc \
     src/core/lib/iomgr/combiner.cc \
     src/core/lib/iomgr/endpoint.cc \
@@ -128,6 +129,7 @@
     src/core/lib/iomgr/gethostname_fallback.cc \
     src/core/lib/iomgr/gethostname_host_name_max.cc \
     src/core/lib/iomgr/gethostname_sysconf.cc \
+    src/core/lib/iomgr/internal_errqueue.cc \
     src/core/lib/iomgr/iocp_windows.cc \
     src/core/lib/iomgr/iomgr.cc \
     src/core/lib/iomgr/iomgr_custom.cc \