Revert "Revert "Fathom tcp changes""
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a330fef..3895d4c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -230,6 +230,9 @@
add_dependencies(buildtests_c bad_server_response_test)
add_dependencies(buildtests_c bin_decoder_test)
add_dependencies(buildtests_c bin_encoder_test)
+if(_gRPC_PLATFORM_LINUX)
+add_dependencies(buildtests_c buffer_list_test)
+endif()
add_dependencies(buildtests_c channel_create_test)
add_dependencies(buildtests_c chttp2_hpack_encoder_test)
add_dependencies(buildtests_c chttp2_stream_map_test)
@@ -959,6 +962,7 @@
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
@@ -979,6 +983,7 @@
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
@@ -1365,6 +1370,7 @@
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
@@ -1385,6 +1391,7 @@
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
@@ -1757,6 +1764,7 @@
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
@@ -1777,6 +1785,7 @@
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
@@ -2065,6 +2074,7 @@
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
@@ -2085,6 +2095,7 @@
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
@@ -2352,6 +2363,7 @@
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
@@ -2372,6 +2384,7 @@
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
@@ -3192,6 +3205,7 @@
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
@@ -3212,6 +3226,7 @@
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
@@ -5837,6 +5852,37 @@
endif (gRPC_BUILD_TESTS)
if (gRPC_BUILD_TESTS)
+if(_gRPC_PLATFORM_LINUX)
+
+add_executable(buffer_list_test
+ test/core/iomgr/buffer_list_test.cc
+)
+
+
+target_include_directories(buffer_list_test
+ PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
+ PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
+ PRIVATE ${_gRPC_SSL_INCLUDE_DIR}
+ PRIVATE ${_gRPC_PROTOBUF_INCLUDE_DIR}
+ PRIVATE ${_gRPC_ZLIB_INCLUDE_DIR}
+ PRIVATE ${_gRPC_BENCHMARK_INCLUDE_DIR}
+ PRIVATE ${_gRPC_CARES_INCLUDE_DIR}
+ PRIVATE ${_gRPC_GFLAGS_INCLUDE_DIR}
+ PRIVATE ${_gRPC_ADDRESS_SORTING_INCLUDE_DIR}
+ PRIVATE ${_gRPC_NANOPB_INCLUDE_DIR}
+)
+
+target_link_libraries(buffer_list_test
+ ${_gRPC_ALLTARGETS_LIBRARIES}
+ grpc_test_util
+ grpc
+ gpr_test_util
+ gpr
+)
+
+endif()
+endif (gRPC_BUILD_TESTS)
+if (gRPC_BUILD_TESTS)
add_executable(channel_create_test
test/core/surface/channel_create_test.cc