[PATCH] eal: initialize shared plugins on Windows

[PATCH] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Tyler Retzlaff (1):
  eal: initialize shared plugins on Windows

 lib/eal/common/eal_common_options.c | 92 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 84 insertions(+), 16 deletions(-)

-- 
1.8.3.1

[PATCH] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/common/eal_common_options.c | 92 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 84 insertions(+), 16 deletions(-)

diff --git a/lib/eal/common/eal_common_options.c b/lib/eal/common/eal_common_options.c
index a6d21f1..3f9a030 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -18,9 +18,7 @@
 #include <libgen.h>
 #endif
 #include <sys/stat.h>
-#ifndef RTE_EXEC_ENV_WINDOWS
 #include <dirent.h>
-#endif
 
 #include <rte_string_fns.h>
 #include <rte_eal.h>
@@ -74,7 +72,7 @@
 	{OPT_HELP,              0, NULL, OPT_HELP_NUM             },
 	{OPT_HUGE_DIR,          1, NULL, OPT_HUGE_DIR_NUM         },
 	{OPT_HUGE_UNLINK,       2, NULL, OPT_HUGE_UNLINK_NUM      },
-	{OPT_IOVA_MODE,	        1, NULL, OPT_IOVA_MODE_NUM        },
+	{OPT_IOVA_MODE,		1, NULL, OPT_IOVA_MODE_NUM        },
 	{OPT_LCORES,            1, NULL, OPT_LCORES_NUM           },
 	{OPT_LOG_LEVEL,         1, NULL, OPT_LOG_LEVEL_NUM        },
 	{OPT_TRACE,             1, NULL, OPT_TRACE_NUM            },
@@ -123,10 +121,8 @@ struct shared_driver {
 static struct shared_driver_list solib_list =
 TAILQ_HEAD_INITIALIZER(solib_list);
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 /* Default path of external loadable drivers */
 static const char *default_solib_dir = RTE_EAL_PMD_PATH;
-#endif
 
 /*
  * Stringified version of solib path used by dpdk-pmdinfo.py
@@ -371,12 +367,12 @@ struct device_option {
 }
 
 #ifdef RTE_EXEC_ENV_WINDOWS
-int
-eal_plugins_init(void)
-{
-	return 0;
-}
+#define SOEXT    ".dll"
 #else
+#define SOEXT    ".so"
+#endif
+
+#define SOABIEXT  SOEXT"."ABI_VERSION
 
 static int
 eal_plugindir_init(const char *path)
@@ -397,12 +393,14 @@ struct device_option {
 
 	while ((dent = readdir(d)) != NULL) {
 		struct stat sb;
-		int nlen = strnlen(dent->d_name, sizeof(dent->d_name));
+		size_t nlen = strnlen(dent->d_name, sizeof(dent->d_name));
 
-		/* check if name ends in .so or .so.ABI_VERSION */
-		if (strcmp(&dent->d_name[nlen - 3], ".so") != 0 &&
-		    strcmp(&dent->d_name[nlen - 4 - strlen(ABI_VERSION)],
-			   ".so."ABI_VERSION) != 0)
+		if (nlen < strlen(SOABIEXT))
+			continue;
+
+		/* check if name ends in SOEXT or SOABIEXT */
+		if (strcmp(&dent->d_name[nlen - strlen(SOEXT)], SOEXT) != 0 &&
+		    strcmp(&dent->d_name[nlen - strlen(SOABIEXT)], SOABIEXT) != 0)
 			continue;
 
 		snprintf(sopath, sizeof(sopath), "%s/%s", path, dent->d_name);
@@ -420,6 +418,68 @@ struct device_option {
 	return (dent == NULL) ? 0 : -1;
 }
 
+#ifdef RTE_EXEC_ENV_WINDOWS
+static void*
+eal_dlopen(const char *pathname)
+{
+	void *retval = NULL;
+	struct stat pathstat;
+	char *fullpath = _fullpath(NULL, pathname, 0);
+
+	const char *loadpath = fullpath;
+	DWORD loadflags = 0;
+
+	if (fullpath == NULL) {
+		RTE_LOG(ERR, EAL, "Error expanding full path for %s, %s\n",
+		pathname, strerror(errno));
+	} else {
+		/* Verify that the path exists */
+		if ((stat(fullpath, &pathstat) != 0) && (errno == ENOENT)) {
+			/* not a full or relative path, try a load from default dirs */
+			loadpath = pathname;
+			loadflags = LOAD_LIBRARY_SEARCH_DEFAULT_DIRS;
+		}
+
+		retval = LoadLibraryExA(loadpath, NULL, loadflags);
+		if (retval == NULL)
+			RTE_LOG(ERR, EAL, "Error loading %s, error code: %" PRIu32 "\n",
+			    loadpath, GetLastError());
+	}
+
+	free(fullpath);
+	return retval;
+}
+
+static int
+is_shared_build(void)
+{
+	int shared = 0;
+	HMODULE apphandle = NULL;
+	HMODULE libhandle = NULL;
+
+	/* if fail to get handle, assume statically linked */
+	apphandle = GetModuleHandleA(NULL);
+	if (apphandle == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot get handle to the app\n");
+		goto out;
+	}
+
+	/* if fail to get handle, assume statically linked */
+	if (GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
+	    GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+	    (LPCSTR)&eal_plugins_init,
+	    &libhandle)) {
+		if (apphandle != libhandle) {
+			/* lib and app handles are different. */
+			/* Therefore lib is dynamically linked */
+			shared = 1;
+		}
+	}
+
+out:
+	return shared;
+}
+#else
 static int
 verify_perms(const char *dirpath)
 {
@@ -527,6 +587,7 @@ struct device_option {
 	RTE_LOG(INFO, EAL, "Detected static linkage of DPDK\n");
 	return 0;
 }
+#endif
 
 int
 eal_plugins_init(void)
@@ -565,7 +626,6 @@ struct device_option {
 	}
 	return 0;
 }
-#endif
 
 /*
  * Parse the coremask given as argument (hexadecimal string) and fill
diff --git a/lib/eal/windows/eal.c b/lib/eal/windows/eal.c
index 7ec2152..af51bf3 100644
--- a/lib/eal/windows/eal.c
+++ b/lib/eal/windows/eal.c
@@ -305,6 +305,14 @@ enum rte_proc_type_t
 	if (fctret < 0)
 		exit(1);
 
+#ifdef RTE_TOOLCHAIN_MSVC
+	if (eal_plugins_init() < 0) {
+		rte_eal_init_alert("Cannot init plugins");
+		rte_errno = EINVAL;
+		return -1;
+	}
+#endif
+
 	if (eal_option_device_parse()) {
 		rte_errno = ENODEV;
 		return -1;
-- 
1.8.3.1

Re: [PATCH] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

On Thu, Dec 07, 2023 at 11:20:51AM -0800, Tyler Retzlaff wrote:
> When EAL is built with MSVC it is possible to dynamically load plugins
> on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
> and provide code to load plugins on Windows.
> 
> Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> ---
>  lib/eal/common/eal_common_options.c | 92 ++++++++++++++++++++++++++++++-------
>  lib/eal/windows/eal.c               |  8 ++++
>  2 files changed, 84 insertions(+), 16 deletions(-)
> 
> diff --git a/lib/eal/common/eal_common_options.c b/lib/eal/common/eal_common_options.c
> index a6d21f1..3f9a030 100644
> --- a/lib/eal/common/eal_common_options.c
> +++ b/lib/eal/common/eal_common_options.c
> @@ -18,9 +18,7 @@
>  #include <libgen.h>
>  #endif
>  #include <sys/stat.h>
> -#ifndef RTE_EXEC_ENV_WINDOWS
>  #include <dirent.h>
> -#endif
>  
>  #include <rte_string_fns.h>
>  #include <rte_eal.h>
> @@ -74,7 +72,7 @@
>  	{OPT_HELP,              0, NULL, OPT_HELP_NUM             },
>  	{OPT_HUGE_DIR,          1, NULL, OPT_HUGE_DIR_NUM         },
>  	{OPT_HUGE_UNLINK,       2, NULL, OPT_HUGE_UNLINK_NUM      },
> -	{OPT_IOVA_MODE,	        1, NULL, OPT_IOVA_MODE_NUM        },
> +	{OPT_IOVA_MODE,		1, NULL, OPT_IOVA_MODE_NUM        },

accidentally converted 8 spaces to a tab here, will submit a new version
to remove the change from this series (or maintainer can adjust).

thanks

[PATCH v2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

v2:
  * revert unintended / unrelated whitespace change
  * include inttypes.h for use of PRIu32 in log format string

Tyler Retzlaff (1):
  eal: initialize shared plugins on Windows

 lib/eal/common/eal_common_options.c | 91 +++++++++++++++++++++++++++++++------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 84 insertions(+), 15 deletions(-)

-- 
1.8.3.1

[PATCH v2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/common/eal_common_options.c | 91 +++++++++++++++++++++++++++++++------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 84 insertions(+), 15 deletions(-)

diff --git a/lib/eal/common/eal_common_options.c b/lib/eal/common/eal_common_options.c
index a6d21f1..55be61d 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -5,6 +5,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <inttypes.h>
 #include <pthread.h>
 #ifndef RTE_EXEC_ENV_WINDOWS
 #include <syslog.h>
@@ -18,9 +19,7 @@
 #include <libgen.h>
 #endif
 #include <sys/stat.h>
-#ifndef RTE_EXEC_ENV_WINDOWS
 #include <dirent.h>
-#endif
 
 #include <rte_string_fns.h>
 #include <rte_eal.h>
@@ -123,10 +122,8 @@ struct shared_driver {
 static struct shared_driver_list solib_list =
 TAILQ_HEAD_INITIALIZER(solib_list);
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 /* Default path of external loadable drivers */
 static const char *default_solib_dir = RTE_EAL_PMD_PATH;
-#endif
 
 /*
  * Stringified version of solib path used by dpdk-pmdinfo.py
@@ -371,12 +368,12 @@ struct device_option {
 }
 
 #ifdef RTE_EXEC_ENV_WINDOWS
-int
-eal_plugins_init(void)
-{
-	return 0;
-}
+#define SOEXT    ".dll"
 #else
+#define SOEXT    ".so"
+#endif
+
+#define SOABIEXT  SOEXT"."ABI_VERSION
 
 static int
 eal_plugindir_init(const char *path)
@@ -397,12 +394,14 @@ struct device_option {
 
 	while ((dent = readdir(d)) != NULL) {
 		struct stat sb;
-		int nlen = strnlen(dent->d_name, sizeof(dent->d_name));
+		size_t nlen = strnlen(dent->d_name, sizeof(dent->d_name));
 
-		/* check if name ends in .so or .so.ABI_VERSION */
-		if (strcmp(&dent->d_name[nlen - 3], ".so") != 0 &&
-		    strcmp(&dent->d_name[nlen - 4 - strlen(ABI_VERSION)],
-			   ".so."ABI_VERSION) != 0)
+		if (nlen < strlen(SOABIEXT))
+			continue;
+
+		/* check if name ends in SOEXT or SOABIEXT */
+		if (strcmp(&dent->d_name[nlen - strlen(SOEXT)], SOEXT) != 0 &&
+		    strcmp(&dent->d_name[nlen - strlen(SOABIEXT)], SOABIEXT) != 0)
 			continue;
 
 		snprintf(sopath, sizeof(sopath), "%s/%s", path, dent->d_name);
@@ -420,6 +419,68 @@ struct device_option {
 	return (dent == NULL) ? 0 : -1;
 }
 
+#ifdef RTE_EXEC_ENV_WINDOWS
+static void*
+eal_dlopen(const char *pathname)
+{
+	void *retval = NULL;
+	struct stat pathstat;
+	char *fullpath = _fullpath(NULL, pathname, 0);
+
+	const char *loadpath = fullpath;
+	DWORD loadflags = 0;
+
+	if (fullpath == NULL) {
+		RTE_LOG(ERR, EAL, "Error expanding full path for %s, %s\n",
+		pathname, strerror(errno));
+	} else {
+		/* Verify that the path exists */
+		if ((stat(fullpath, &pathstat) != 0) && (errno == ENOENT)) {
+			/* not a full or relative path, try a load from default dirs */
+			loadpath = pathname;
+			loadflags = LOAD_LIBRARY_SEARCH_DEFAULT_DIRS;
+		}
+
+		retval = LoadLibraryExA(loadpath, NULL, loadflags);
+		if (retval == NULL)
+			RTE_LOG(ERR, EAL, "Error loading %s, error code: %" PRIu32 "\n",
+			    loadpath, GetLastError());
+	}
+
+	free(fullpath);
+	return retval;
+}
+
+static int
+is_shared_build(void)
+{
+	int shared = 0;
+	HMODULE apphandle = NULL;
+	HMODULE libhandle = NULL;
+
+	/* if fail to get handle, assume statically linked */
+	apphandle = GetModuleHandleA(NULL);
+	if (apphandle == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot get handle to the app\n");
+		goto out;
+	}
+
+	/* if fail to get handle, assume statically linked */
+	if (GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
+	    GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+	    (LPCSTR)&eal_plugins_init,
+	    &libhandle)) {
+		if (apphandle != libhandle) {
+			/* lib and app handles are different. */
+			/* Therefore lib is dynamically linked */
+			shared = 1;
+		}
+	}
+
+out:
+	return shared;
+}
+#else
 static int
 verify_perms(const char *dirpath)
 {
@@ -527,6 +588,7 @@ struct device_option {
 	RTE_LOG(INFO, EAL, "Detected static linkage of DPDK\n");
 	return 0;
 }
+#endif
 
 int
 eal_plugins_init(void)
@@ -565,7 +627,6 @@ struct device_option {
 	}
 	return 0;
 }
-#endif
 
 /*
  * Parse the coremask given as argument (hexadecimal string) and fill
diff --git a/lib/eal/windows/eal.c b/lib/eal/windows/eal.c
index 7ec2152..af51bf3 100644
--- a/lib/eal/windows/eal.c
+++ b/lib/eal/windows/eal.c
@@ -305,6 +305,14 @@ enum rte_proc_type_t
 	if (fctret < 0)
 		exit(1);
 
+#ifdef RTE_TOOLCHAIN_MSVC
+	if (eal_plugins_init() < 0) {
+		rte_eal_init_alert("Cannot init plugins");
+		rte_errno = EINVAL;
+		return -1;
+	}
+#endif
+
 	if (eal_option_device_parse()) {
 		rte_errno = ENODEV;
 		return -1;
-- 
1.8.3.1

[PATCH v3] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Tyler Retzlaff (1):
  eal: initialize shared plugins on Windows

 lib/eal/common/eal_common_options.c | 90 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 83 insertions(+), 15 deletions(-)

-- 
1.8.3.1

[PATCH v3] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/common/eal_common_options.c | 90 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 83 insertions(+), 15 deletions(-)

diff --git a/lib/eal/common/eal_common_options.c b/lib/eal/common/eal_common_options.c
index d974807..d519a55 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -18,9 +18,7 @@
 #include <libgen.h>
 #endif
 #include <sys/stat.h>
-#ifndef RTE_EXEC_ENV_WINDOWS
 #include <dirent.h>
-#endif
 
 #include <rte_string_fns.h>
 #include <rte_eal.h>
@@ -123,10 +121,8 @@ struct shared_driver {
 static struct shared_driver_list solib_list =
 TAILQ_HEAD_INITIALIZER(solib_list);
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 /* Default path of external loadable drivers */
 static const char *default_solib_dir = RTE_EAL_PMD_PATH;
-#endif
 
 /*
  * Stringified version of solib path used by dpdk-pmdinfo.py
@@ -371,12 +367,12 @@ struct device_option {
 }
 
 #ifdef RTE_EXEC_ENV_WINDOWS
-int
-eal_plugins_init(void)
-{
-	return 0;
-}
+#define SOEXT    ".dll"
 #else
+#define SOEXT    ".so"
+#endif
+
+#define SOABIEXT  SOEXT"."ABI_VERSION
 
 static int
 eal_plugindir_init(const char *path)
@@ -397,12 +393,14 @@ struct device_option {
 
 	while ((dent = readdir(d)) != NULL) {
 		struct stat sb;
-		int nlen = strnlen(dent->d_name, sizeof(dent->d_name));
+		size_t nlen = strnlen(dent->d_name, sizeof(dent->d_name));
 
-		/* check if name ends in .so or .so.ABI_VERSION */
-		if (strcmp(&dent->d_name[nlen - 3], ".so") != 0 &&
-		    strcmp(&dent->d_name[nlen - 4 - strlen(ABI_VERSION)],
-			   ".so."ABI_VERSION) != 0)
+		if (nlen < strlen(SOABIEXT))
+			continue;
+
+		/* check if name ends in SOEXT or SOABIEXT */
+		if (strcmp(&dent->d_name[nlen - strlen(SOEXT)], SOEXT) != 0 &&
+		    strcmp(&dent->d_name[nlen - strlen(SOABIEXT)], SOABIEXT) != 0)
 			continue;
 
 		snprintf(sopath, sizeof(sopath), "%s/%s", path, dent->d_name);
@@ -420,6 +418,68 @@ struct device_option {
 	return (dent == NULL) ? 0 : -1;
 }
 
+#ifdef RTE_EXEC_ENV_WINDOWS
+static void*
+eal_dlopen(const char *pathname)
+{
+	void *retval = NULL;
+	struct stat pathstat;
+	char *fullpath = _fullpath(NULL, pathname, 0);
+
+	const char *loadpath = fullpath;
+	DWORD loadflags = 0;
+
+	if (fullpath == NULL) {
+		RTE_LOG(ERR, EAL, "Error expanding full path for %s, %s\n",
+		pathname, strerror(errno));
+	} else {
+		/* Verify that the path exists */
+		if ((stat(fullpath, &pathstat) != 0) && (errno == ENOENT)) {
+			/* not a full or relative path, try a load from default dirs */
+			loadpath = pathname;
+			loadflags = LOAD_LIBRARY_SEARCH_DEFAULT_DIRS;
+		}
+
+		retval = LoadLibraryExA(loadpath, NULL, loadflags);
+		if (retval == NULL)
+			RTE_LOG(ERR, EAL, "Error loading %s, error code: %lu\n",
+			    loadpath, GetLastError());
+	}
+
+	free(fullpath);
+	return retval;
+}
+
+static int
+is_shared_build(void)
+{
+	int shared = 0;
+	HMODULE apphandle = NULL;
+	HMODULE libhandle = NULL;
+
+	/* if fail to get handle, assume statically linked */
+	apphandle = GetModuleHandleA(NULL);
+	if (apphandle == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot get handle to the app\n");
+		goto out;
+	}
+
+	/* if fail to get handle, assume statically linked */
+	if (GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
+	    GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+	    (LPCSTR)&eal_plugins_init,
+	    &libhandle)) {
+		if (apphandle != libhandle) {
+			/* lib and app handles are different. */
+			/* Therefore lib is dynamically linked */
+			shared = 1;
+		}
+	}
+
+out:
+	return shared;
+}
+#else
 static int
 verify_perms(const char *dirpath)
 {
@@ -527,6 +587,7 @@ struct device_option {
 	EAL_LOG(INFO, "Detected static linkage of DPDK");
 	return 0;
 }
+#endif
 
 int
 eal_plugins_init(void)
@@ -565,7 +626,6 @@ struct device_option {
 	}
 	return 0;
 }
-#endif
 
 /*
  * Parse the coremask given as argument (hexadecimal string) and fill
diff --git a/lib/eal/windows/eal.c b/lib/eal/windows/eal.c
index 52f0e74..dc2bcb7 100644
--- a/lib/eal/windows/eal.c
+++ b/lib/eal/windows/eal.c
@@ -305,6 +305,14 @@ enum rte_proc_type_t
 	if (fctret < 0)
 		exit(1);
 
+#ifdef RTE_TOOLCHAIN_MSVC
+	if (eal_plugins_init() < 0) {
+		rte_eal_init_alert("Cannot init plugins");
+		rte_errno = EINVAL;
+		return -1;
+	}
+#endif
+
 	if (eal_option_device_parse()) {
 		rte_errno = ENODEV;
 		return -1;
-- 
1.8.3.1

[PATCH v4 0/2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

v4:
  * include winipfamily.h header for WINAPI_FAMILY macros and provide
    definition for PHONE_APP if mingw winipfamily.h doesn't supply it

v3:
  * revert use of PRIu32 from previous patch just use %lu to make
    unsigned long format happy

v2:
  * revert unintended / unrelated whitespace change
  * include inttypes.h for use of PRIu32 in log format string

Tyler Retzlaff (2):
  windows: include winapifamily header for macros
  eal: initialize shared plugins on Windows

 lib/eal/common/eal_common_options.c | 90 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 lib/eal/windows/include/dirent.h    |  6 +++
 3 files changed, 89 insertions(+), 15 deletions(-)

-- 
1.8.3.1

[PATCH v4 1/2] windows: include winapifamily header for macros

[Tyler Retzlaff]

Include winapifamily.h for WINAPI_FAMILY macro and provide a definition
of WINAPI_FAMILY_PHONE_APP if not present (happens compiling under
mingw)

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/windows/include/dirent.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/eal/windows/include/dirent.h b/lib/eal/windows/include/dirent.h
index b522424..80bc6c3 100644
--- a/lib/eal/windows/include/dirent.h
+++ b/lib/eal/windows/include/dirent.h
@@ -8,6 +8,12 @@
 #ifndef DIRENT_H
 #define DIRENT_H
 
+#include <winapifamily.h>
+
+#ifndef WINAPI_FAMILY_PHONE_APP
+#define WINAPI_FAMILY_PHONE_APP 3
+#endif
+
 /*
  * Include windows.h without Windows Sockets 1.1 to prevent conflicts with
  * Windows Sockets 2.0.
-- 
1.8.3.1

Re: [PATCH v4 1/2] windows: include winapifamily header for macros

[Dmitry Kozlyuk]

2024-01-08 15:38 (UTC-0800), Tyler Retzlaff:
> Include winapifamily.h for WINAPI_FAMILY macro and provide a definition
> of WINAPI_FAMILY_PHONE_APP if not present (happens compiling under
> mingw)

Given this explanation, I think the subject should be:

	eal/windows: make dirent.h shim compatible with MinGW

Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>

[PATCH v4 2/2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
---
 lib/eal/common/eal_common_options.c | 90 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 83 insertions(+), 15 deletions(-)

diff --git a/lib/eal/common/eal_common_options.c b/lib/eal/common/eal_common_options.c
index d974807..d519a55 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -18,9 +18,7 @@
 #include <libgen.h>
 #endif
 #include <sys/stat.h>
-#ifndef RTE_EXEC_ENV_WINDOWS
 #include <dirent.h>
-#endif
 
 #include <rte_string_fns.h>
 #include <rte_eal.h>
@@ -123,10 +121,8 @@ struct shared_driver {
 static struct shared_driver_list solib_list =
 TAILQ_HEAD_INITIALIZER(solib_list);
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 /* Default path of external loadable drivers */
 static const char *default_solib_dir = RTE_EAL_PMD_PATH;
-#endif
 
 /*
  * Stringified version of solib path used by dpdk-pmdinfo.py
@@ -371,12 +367,12 @@ struct device_option {
 }
 
 #ifdef RTE_EXEC_ENV_WINDOWS
-int
-eal_plugins_init(void)
-{
-	return 0;
-}
+#define SOEXT    ".dll"
 #else
+#define SOEXT    ".so"
+#endif
+
+#define SOABIEXT  SOEXT"."ABI_VERSION
 
 static int
 eal_plugindir_init(const char *path)
@@ -397,12 +393,14 @@ struct device_option {
 
 	while ((dent = readdir(d)) != NULL) {
 		struct stat sb;
-		int nlen = strnlen(dent->d_name, sizeof(dent->d_name));
+		size_t nlen = strnlen(dent->d_name, sizeof(dent->d_name));
 
-		/* check if name ends in .so or .so.ABI_VERSION */
-		if (strcmp(&dent->d_name[nlen - 3], ".so") != 0 &&
-		    strcmp(&dent->d_name[nlen - 4 - strlen(ABI_VERSION)],
-			   ".so."ABI_VERSION) != 0)
+		if (nlen < strlen(SOABIEXT))
+			continue;
+
+		/* check if name ends in SOEXT or SOABIEXT */
+		if (strcmp(&dent->d_name[nlen - strlen(SOEXT)], SOEXT) != 0 &&
+		    strcmp(&dent->d_name[nlen - strlen(SOABIEXT)], SOABIEXT) != 0)
 			continue;
 
 		snprintf(sopath, sizeof(sopath), "%s/%s", path, dent->d_name);
@@ -420,6 +418,68 @@ struct device_option {
 	return (dent == NULL) ? 0 : -1;
 }
 
+#ifdef RTE_EXEC_ENV_WINDOWS
+static void*
+eal_dlopen(const char *pathname)
+{
+	void *retval = NULL;
+	struct stat pathstat;
+	char *fullpath = _fullpath(NULL, pathname, 0);
+
+	const char *loadpath = fullpath;
+	DWORD loadflags = 0;
+
+	if (fullpath == NULL) {
+		RTE_LOG(ERR, EAL, "Error expanding full path for %s, %s\n",
+		pathname, strerror(errno));
+	} else {
+		/* Verify that the path exists */
+		if ((stat(fullpath, &pathstat) != 0) && (errno == ENOENT)) {
+			/* not a full or relative path, try a load from default dirs */
+			loadpath = pathname;
+			loadflags = LOAD_LIBRARY_SEARCH_DEFAULT_DIRS;
+		}
+
+		retval = LoadLibraryExA(loadpath, NULL, loadflags);
+		if (retval == NULL)
+			RTE_LOG(ERR, EAL, "Error loading %s, error code: %lu\n",
+			    loadpath, GetLastError());
+	}
+
+	free(fullpath);
+	return retval;
+}
+
+static int
+is_shared_build(void)
+{
+	int shared = 0;
+	HMODULE apphandle = NULL;
+	HMODULE libhandle = NULL;
+
+	/* if fail to get handle, assume statically linked */
+	apphandle = GetModuleHandleA(NULL);
+	if (apphandle == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot get handle to the app\n");
+		goto out;
+	}
+
+	/* if fail to get handle, assume statically linked */
+	if (GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
+	    GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+	    (LPCSTR)&eal_plugins_init,
+	    &libhandle)) {
+		if (apphandle != libhandle) {
+			/* lib and app handles are different. */
+			/* Therefore lib is dynamically linked */
+			shared = 1;
+		}
+	}
+
+out:
+	return shared;
+}
+#else
 static int
 verify_perms(const char *dirpath)
 {
@@ -527,6 +587,7 @@ struct device_option {
 	EAL_LOG(INFO, "Detected static linkage of DPDK");
 	return 0;
 }
+#endif
 
 int
 eal_plugins_init(void)
@@ -565,7 +626,6 @@ struct device_option {
 	}
 	return 0;
 }
-#endif
 
 /*
  * Parse the coremask given as argument (hexadecimal string) and fill
diff --git a/lib/eal/windows/eal.c b/lib/eal/windows/eal.c
index 52f0e74..dc2bcb7 100644
--- a/lib/eal/windows/eal.c
+++ b/lib/eal/windows/eal.c
@@ -305,6 +305,14 @@ enum rte_proc_type_t
 	if (fctret < 0)
 		exit(1);
 
+#ifdef RTE_TOOLCHAIN_MSVC
+	if (eal_plugins_init() < 0) {
+		rte_eal_init_alert("Cannot init plugins");
+		rte_errno = EINVAL;
+		return -1;
+	}
+#endif
+
 	if (eal_option_device_parse()) {
 		rte_errno = ENODEV;
 		return -1;
-- 
1.8.3.1

Re: [PATCH v4 2/2] eal: initialize shared plugins on Windows

[Dmitry Kozlyuk]

2024-01-08 15:38 (UTC-0800), Tyler Retzlaff:
> When EAL is built with MSVC it is possible to dynamically load plugins
> on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
> and provide code to load plugins on Windows.

Windows implementation does not check directory permissions like its Unix
counterpart does. I don't insist on porting it, because this feature is not
documented and is more like a safety net.
Just making sure this is a conscious decision and not an oversight.

Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>

Re: [PATCH v4 0/2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

ping for Windows maintainers

thanks!

On Mon, Jan 08, 2024 at 03:38:09PM -0800, Tyler Retzlaff wrote:
> When EAL is built with MSVC it is possible to dynamically load plugins
> on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
> and provide code to load plugins on Windows.
> 
> v4:
>   * include winipfamily.h header for WINAPI_FAMILY macros and provide
>     definition for PHONE_APP if mingw winipfamily.h doesn't supply it
> 
> v3:
>   * revert use of PRIu32 from previous patch just use %lu to make
>     unsigned long format happy
> 
> v2:
>   * revert unintended / unrelated whitespace change
>   * include inttypes.h for use of PRIu32 in log format string
> 
> Tyler Retzlaff (2):
>   windows: include winapifamily header for macros
>   eal: initialize shared plugins on Windows
> 
>  lib/eal/common/eal_common_options.c | 90 ++++++++++++++++++++++++++++++-------
>  lib/eal/windows/eal.c               |  8 ++++
>  lib/eal/windows/include/dirent.h    |  6 +++
>  3 files changed, 89 insertions(+), 15 deletions(-)
> 
> -- 
> 1.8.3.1

[PATCH v5 0/2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Note: For patch 2/2 no verify permissions is provided as it would be
      redundant with the check performed by LoadLibrary.

CI warning also expected DWORD is not uint64_t on Windows.

v5:
  * rebase series
  * use RTE_LOG_LINE instead of RTE_LOG
  * update commit subject on patch 1/2 as per maintainer suggestion

v4:
  * include winipfamily.h header for WINAPI_FAMILY macros and provide
    definition for PHONE_APP if mingw winipfamily.h doesn't supply it

v3:
  * revert use of PRIu32 from previous patch just use %lu to make
    unsigned long format happy

v2:
  * revert unintended / unrelated whitespace change
  * include inttypes.h for use of PRIu32 in log format string

Tyler Retzlaff (2):
  eal/windows: make dirent.h shim compatible with MinGW
  eal: initialize shared plugins on Windows

 lib/eal/common/eal_common_options.c | 90 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 lib/eal/windows/include/dirent.h    |  6 +++
 3 files changed, 89 insertions(+), 15 deletions(-)

-- 
1.8.3.1

[PATCH v5 1/2] eal/windows: make dirent.h shim compatible with MinGW

[Tyler Retzlaff]

Include winapifamily.h for WINAPI_FAMILY macro and provide a definition
of WINAPI_FAMILY_PHONE_APP if not present (happens compiling under
mingw)

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
---
 lib/eal/windows/include/dirent.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/eal/windows/include/dirent.h b/lib/eal/windows/include/dirent.h
index b522424..80bc6c3 100644
--- a/lib/eal/windows/include/dirent.h
+++ b/lib/eal/windows/include/dirent.h
@@ -8,6 +8,12 @@
 #ifndef DIRENT_H
 #define DIRENT_H
 
+#include <winapifamily.h>
+
+#ifndef WINAPI_FAMILY_PHONE_APP
+#define WINAPI_FAMILY_PHONE_APP 3
+#endif
+
 /*
  * Include windows.h without Windows Sockets 1.1 to prevent conflicts with
  * Windows Sockets 2.0.
-- 
1.8.3.1

[PATCH v5 2/2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

When EAL is built with MSVC it is possible to dynamically load plugins
on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
and provide code to load plugins on Windows.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
---
 lib/eal/common/eal_common_options.c | 90 ++++++++++++++++++++++++++++++-------
 lib/eal/windows/eal.c               |  8 ++++
 2 files changed, 83 insertions(+), 15 deletions(-)

diff --git a/lib/eal/common/eal_common_options.c b/lib/eal/common/eal_common_options.c
index e541f07..bd3f332 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -18,9 +18,7 @@
 #include <libgen.h>
 #endif
 #include <sys/stat.h>
-#ifndef RTE_EXEC_ENV_WINDOWS
 #include <dirent.h>
-#endif
 
 #include <rte_string_fns.h>
 #include <rte_eal.h>
@@ -123,10 +121,8 @@ struct shared_driver {
 static struct shared_driver_list solib_list =
 TAILQ_HEAD_INITIALIZER(solib_list);
 
-#ifndef RTE_EXEC_ENV_WINDOWS
 /* Default path of external loadable drivers */
 static const char *default_solib_dir = RTE_EAL_PMD_PATH;
-#endif
 
 /*
  * Stringified version of solib path used by dpdk-pmdinfo.py
@@ -391,12 +387,12 @@ struct device_option {
 }
 
 #ifdef RTE_EXEC_ENV_WINDOWS
-int
-eal_plugins_init(void)
-{
-	return 0;
-}
+#define SOEXT    ".dll"
 #else
+#define SOEXT    ".so"
+#endif
+
+#define SOABIEXT  SOEXT"."ABI_VERSION
 
 static int
 eal_plugindir_init(const char *path)
@@ -417,12 +413,14 @@ struct device_option {
 
 	while ((dent = readdir(d)) != NULL) {
 		struct stat sb;
-		int nlen = strnlen(dent->d_name, sizeof(dent->d_name));
+		size_t nlen = strnlen(dent->d_name, sizeof(dent->d_name));
 
-		/* check if name ends in .so or .so.ABI_VERSION */
-		if (strcmp(&dent->d_name[nlen - 3], ".so") != 0 &&
-		    strcmp(&dent->d_name[nlen - 4 - strlen(ABI_VERSION)],
-			   ".so."ABI_VERSION) != 0)
+		if (nlen < strlen(SOABIEXT))
+			continue;
+
+		/* check if name ends in SOEXT or SOABIEXT */
+		if (strcmp(&dent->d_name[nlen - strlen(SOEXT)], SOEXT) != 0 &&
+		    strcmp(&dent->d_name[nlen - strlen(SOABIEXT)], SOABIEXT) != 0)
 			continue;
 
 		snprintf(sopath, sizeof(sopath), "%s/%s", path, dent->d_name);
@@ -440,6 +438,68 @@ struct device_option {
 	return (dent == NULL) ? 0 : -1;
 }
 
+#ifdef RTE_EXEC_ENV_WINDOWS
+static void*
+eal_dlopen(const char *pathname)
+{
+	void *retval = NULL;
+	struct stat pathstat;
+	char *fullpath = _fullpath(NULL, pathname, 0);
+
+	const char *loadpath = fullpath;
+	DWORD loadflags = 0;
+
+	if (fullpath == NULL) {
+		RTE_LOG_LINE(ERR, EAL, "Error expanding full path for %s, %s",
+		pathname, strerror(errno));
+	} else {
+		/* Verify that the path exists */
+		if ((stat(fullpath, &pathstat) != 0) && (errno == ENOENT)) {
+			/* not a full or relative path, try a load from default dirs */
+			loadpath = pathname;
+			loadflags = LOAD_LIBRARY_SEARCH_DEFAULT_DIRS;
+		}
+
+		retval = LoadLibraryExA(loadpath, NULL, loadflags);
+		if (retval == NULL)
+			RTE_LOG_LINE(ERR, EAL, "Error loading %s, error code: %lu",
+			    loadpath, GetLastError());
+	}
+
+	free(fullpath);
+	return retval;
+}
+
+static int
+is_shared_build(void)
+{
+	int shared = 0;
+	HMODULE apphandle = NULL;
+	HMODULE libhandle = NULL;
+
+	/* if fail to get handle, assume statically linked */
+	apphandle = GetModuleHandleA(NULL);
+	if (apphandle == NULL) {
+		RTE_LOG_LINE(ERR, EAL, "Cannot get handle to the app");
+		goto out;
+	}
+
+	/* if fail to get handle, assume statically linked */
+	if (GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
+	    GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+	    (LPCSTR)&eal_plugins_init,
+	    &libhandle)) {
+		if (apphandle != libhandle) {
+			/* lib and app handles are different. */
+			/* Therefore lib is dynamically linked */
+			shared = 1;
+		}
+	}
+
+out:
+	return shared;
+}
+#else
 static int
 verify_perms(const char *dirpath)
 {
@@ -547,6 +607,7 @@ struct device_option {
 	EAL_LOG(INFO, "Detected static linkage of DPDK");
 	return 0;
 }
+#endif
 
 int
 eal_plugins_init(void)
@@ -585,7 +646,6 @@ struct device_option {
 	}
 	return 0;
 }
-#endif
 
 /*
  * Parse the coremask given as argument (hexadecimal string) and fill
diff --git a/lib/eal/windows/eal.c b/lib/eal/windows/eal.c
index 52f0e74..dc2bcb7 100644
--- a/lib/eal/windows/eal.c
+++ b/lib/eal/windows/eal.c
@@ -305,6 +305,14 @@ enum rte_proc_type_t
 	if (fctret < 0)
 		exit(1);
 
+#ifdef RTE_TOOLCHAIN_MSVC
+	if (eal_plugins_init() < 0) {
+		rte_eal_init_alert("Cannot init plugins");
+		rte_errno = EINVAL;
+		return -1;
+	}
+#endif
+
 	if (eal_option_device_parse()) {
 		rte_errno = ENODEV;
 		return -1;
-- 
1.8.3.1

Re: [PATCH v5 2/2] eal: initialize shared plugins on Windows

[Thomas Monjalon]

12/03/2024 17:52, Tyler Retzlaff:
> When EAL is built with MSVC it is possible to dynamically load plugins
> on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
> and provide code to load plugins on Windows.
> 
> Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> ---
> +#ifdef RTE_EXEC_ENV_WINDOWS
> +static void*
> +eal_dlopen(const char *pathname)
> +{

I'm not sure about having a Windows-specific implementation in lib/eal/common/

Also, the CI is failing with this patchset.

Re: [PATCH v5 2/2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

On Wed, May 29, 2024 at 04:29:29PM +0200, Thomas Monjalon wrote:
> 12/03/2024 17:52, Tyler Retzlaff:
> > When EAL is built with MSVC it is possible to dynamically load plugins
> > on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
> > and provide code to load plugins on Windows.
> > 
> > Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> > Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> > ---
> > +#ifdef RTE_EXEC_ENV_WINDOWS
> > +static void*
> > +eal_dlopen(const char *pathname)
> > +{
> 
> I'm not sure about having a Windows-specific implementation in lib/eal/common/

are you asking for the unix and windows implementations to be moved out
to eal/{windows,unix} respectively rather than the current conditional
compiled in eal/common?

> 
> Also, the CI is failing with this patchset.
> 

i'll take a look when i get a chance, you can leave it unmerged for now.

Re: [PATCH v5 2/2] eal: initialize shared plugins on Windows

[Thomas Monjalon]

29/05/2024 19:56, Tyler Retzlaff:
> On Wed, May 29, 2024 at 04:29:29PM +0200, Thomas Monjalon wrote:
> > 12/03/2024 17:52, Tyler Retzlaff:
> > > When EAL is built with MSVC it is possible to dynamically load plugins
> > > on Windows. Hook eal_plugins_init into rte_eal_init if built with MSVC
> > > and provide code to load plugins on Windows.
> > > 
> > > Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> > > Acked-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
> > > ---
> > > +#ifdef RTE_EXEC_ENV_WINDOWS
> > > +static void*
> > > +eal_dlopen(const char *pathname)
> > > +{
> > 
> > I'm not sure about having a Windows-specific implementation in lib/eal/common/
> 
> are you asking for the unix and windows implementations to be moved out
> to eal/{windows,unix} respectively rather than the current conditional
> compiled in eal/common?

Yes I feel it would be better.
Please tell me if I missed something.

> > Also, the CI is failing with this patchset.
> > 
> 
> i'll take a look when i get a chance, you can leave it unmerged for now.

Re: [PATCH v5 2/2] eal: initialize shared plugins on Windows

[Stephen Hemminger]

On Thu, 30 May 2024 10:02:46 +0200
Thomas Monjalon <thomas@monjalon.net> wrote:

> > are you asking for the unix and windows implementations to be moved out
> > to eal/{windows,unix} respectively rather than the current conditional
> > compiled in eal/common?  
> 
> Yes I feel it would be better.
> Please tell me if I missed something.
> 
> > > Also, the CI is failing with this patchset.
> > >   
> > 
> > i'll take a look when i get a chance, you can leave it unmerged for now.  

Marking it as changes requested.
Would be good to split as requested.

Re: [PATCH v5 0/2] eal: initialize shared plugins on Windows

[Tyler Retzlaff]

Recheck-request: github-robot