[Accel-config] [PATCH] accel-config: Provide compatibility for legacy mode driver names

[ramesh.thomas at intel.com]

[-- Attachment #1: Type: text/plain, Size: 1522 bytes --]

From: Ramesh Thomas <ramesh.thomas(a)intel.com>

Check for presence of /sys/bus/dsa/drivers/idxd and use legacy driver
names if not present.

Signed-off-by: Ramesh Thomas <ramesh.thomas(a)intel.com>
---
 accfg/lib/libaccfg.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/accfg/lib/libaccfg.c b/accfg/lib/libaccfg.c
index f21cab5..592c22c 100644
--- a/accfg/lib/libaccfg.c
+++ b/accfg/lib/libaccfg.c
@@ -36,6 +36,13 @@
 #define IDXD_WQ_DEVICE_PORTAL(d, w) ((d)->ctx->compat ? \
 		(d)->bus_type_str : accfg_wq_device_portals[(w)->type])
 
+char *accfg_wq_device_portals_legacy[] = {
+	[ACCFG_WQT_KERNEL] = "idxd-kernel-portal",
+	[ACCFG_WQT_USER] = "idxd-user-portal",
+	[ACCFG_WQT_MDEV] = "idxd-mdev-portal",
+	NULL
+};
+
 char *accfg_wq_device_portals[] = {
 	[ACCFG_WQT_KERNEL] = "dmaengine",
 	[ACCFG_WQT_USER] = "user",
@@ -398,8 +405,15 @@ ACCFG_EXPORT int accfg_new(struct accfg_ctx **ctx)
 	c->refcount = 1;
 	log_init(&c->ctx, "libaccfg", "ACCFG_LOG");
 	c->timeout = 5000;
-	if (access(IDXD_DRIVER_BIND_PATH, R_OK))
+	if (access(IDXD_DRIVER_BIND_PATH, R_OK)) {
 		c->compat = true;
+		accfg_wq_device_portals[ACCFG_WQT_KERNEL] =
+			accfg_wq_device_portals_legacy[ACCFG_WQT_KERNEL];
+		accfg_wq_device_portals[ACCFG_WQT_USER] =
+			accfg_wq_device_portals_legacy[ACCFG_WQT_USER];
+		accfg_wq_device_portals[ACCFG_WQT_MDEV] =
+			accfg_wq_device_portals_legacy[ACCFG_WQT_MDEV];
+	}
 
 	list_head_init(&c->devices);
 
-- 
2.26.3