[dpdk-dev] [PATCH 2/3] net/i40e: add changes to support i40e PMD on windows

[Pallavi Kadam <pallavi.kadam@intel.com>]

Adding build changes to compile i40e PMD on windows.
Disabling few warnings with Clang such as comparison of integers of
different signs and macro redefinitions.
Also, adding linking dependency source file rte_random.c file to
Windows.

Signed-off-by: Pallavi Kadam <pallavi.kadam@intel.com>
Reviewed-by: Ranjit Menon <ranjit.menon@intel.com>
---
 drivers/net/i40e/base/i40e_osdep.h           | 3 +++
 drivers/net/i40e/i40e_ethdev_vf.c            | 3 ++-
 drivers/net/i40e/i40e_rxtx_vec_avx2.c        | 2 ++
 drivers/net/i40e/i40e_tm.c                   | 2 +-
 drivers/net/meson.build                      | 9 ++++++---
 lib/librte_eal/common/meson.build            | 1 +
 lib/librte_eal/rte_eal_exports.def           | 1 +
 lib/librte_eal/windows/include/rte_windows.h | 5 +++++
 8 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/drivers/net/i40e/base/i40e_osdep.h b/drivers/net/i40e/base/i40e_osdep.h
index 9b5033024..fa22df122 100644
--- a/drivers/net/i40e/base/i40e_osdep.h
+++ b/drivers/net/i40e/base/i40e_osdep.h
@@ -67,8 +67,11 @@ typedef enum i40e_status_code i40e_status;
 #define false           0
 #define true            1
 
+/* Avoid macro redifinition warning on Windows */
+#ifndef RTE_EXEC_ENV_WINDOWS
 #define min(a,b) RTE_MIN(a,b)
 #define max(a,b) RTE_MAX(a,b)
+#endif
 
 #define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
 
diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index c26b036b8..daf4a3f99 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1495,7 +1495,8 @@ i40evf_handle_aq_msg(struct rte_eth_dev *dev)
 						       info.msg_len);
 			else {
 				/* read message and it's expected one */
-				if (msg_opc == vf->pend_cmd) {
+				if ((volatile uint32_t)msg_opc ==
+				    vf->pend_cmd) {
 					vf->cmd_retval = msg_ret;
 					/* prevent compiler reordering */
 					rte_compiler_barrier();
diff --git a/drivers/net/i40e/i40e_rxtx_vec_avx2.c b/drivers/net/i40e/i40e_rxtx_vec_avx2.c
index 7a558fc73..cf2dc88c5 100644
--- a/drivers/net/i40e/i40e_rxtx_vec_avx2.c
+++ b/drivers/net/i40e/i40e_rxtx_vec_avx2.c
@@ -12,7 +12,9 @@
 #include "i40e_rxtx.h"
 #include "i40e_rxtx_vec_common.h"
 
+#ifndef RTE_EXEC_ENV_WINDOWS
 #include <x86intrin.h>
+#endif
 
 #ifndef __INTEL_COMPILER
 #pragma GCC diagnostic ignored "-Wcast-qual"
diff --git a/drivers/net/i40e/i40e_tm.c b/drivers/net/i40e/i40e_tm.c
index 5d722f92c..cab296e1a 100644
--- a/drivers/net/i40e/i40e_tm.c
+++ b/drivers/net/i40e/i40e_tm.c
@@ -554,7 +554,7 @@ i40e_node_add(struct rte_eth_dev *dev, uint32_t node_id,
 	}
 	/* check level */
 	if (level_id != RTE_TM_NODE_LEVEL_ID_ANY &&
-	    level_id != parent_node_type + 1) {
+	    level_id != (uint32_t)parent_node_type + 1) {
 		error->type = RTE_TM_ERROR_TYPE_NODE_PARAMS;
 		error->message = "Wrong level";
 		return -EINVAL;
diff --git a/drivers/net/meson.build b/drivers/net/meson.build
index 29f477750..b3bc0277e 100644
--- a/drivers/net/meson.build
+++ b/drivers/net/meson.build
@@ -1,9 +1,6 @@
 # SPDX-License-Identifier: BSD-3-Clause
 # Copyright(c) 2017 Intel Corporation
 
-if is_windows
-	subdir_done()
-endif
 
 drivers = ['af_packet',
 	'af_xdp',
@@ -56,6 +53,12 @@ drivers = ['af_packet',
 	'virtio',
 	'vmxnet3',
 ]
+
+if is_windows
+	drivers = ['i40e',
+	]
+endif
+
 std_deps = ['ethdev', 'kvargs'] # 'ethdev' also pulls in mbuf, net, eal etc
 std_deps += ['bus_pci']         # very many PMDs depend on PCI, so make std
 std_deps += ['bus_vdev']        # same with vdev bus
diff --git a/lib/librte_eal/common/meson.build b/lib/librte_eal/common/meson.build
index 39abf7a0a..98e8fffd4 100644
--- a/lib/librte_eal/common/meson.build
+++ b/lib/librte_eal/common/meson.build
@@ -33,6 +33,7 @@ if is_windows
 		'malloc_heap.c',
 		'rte_malloc.c',
 		'eal_common_timer.c',
+		'rte_random.c',
 		'rte_service.c',
 	)
 	subdir_done()
diff --git a/lib/librte_eal/rte_eal_exports.def b/lib/librte_eal/rte_eal_exports.def
index 89166acd7..428201872 100644
--- a/lib/librte_eal/rte_eal_exports.def
+++ b/lib/librte_eal/rte_eal_exports.def
@@ -124,6 +124,7 @@ EXPORTS
 	rte_memzone_reserve_bounded
 	rte_memzone_walk
 	rte_openlog_stream
+	rte_rand
 	rte_realloc
 	rte_rtm_supported
 	rte_service_attr_get
diff --git a/lib/librte_eal/windows/include/rte_windows.h b/lib/librte_eal/windows/include/rte_windows.h
index b82af34f6..822922c11 100644
--- a/lib/librte_eal/windows/include/rte_windows.h
+++ b/lib/librte_eal/windows/include/rte_windows.h
@@ -18,6 +18,11 @@
 #define WIN32_LEAN_AND_MEAN
 #endif
 
+#ifdef __clang__
+#undef _m_prefetchw
+#define _m_prefetchw __m_prefetchw
+#endif
+
 /* Must come first. */
 #include <windows.h>
 
-- 
2.18.0.windows.1