[PATCH v2 03/14] net: ionic: Export the APIs from net driver to support device commands

[Abhijit Gangurde <abhijit.gangurde@xxxxxxx>]

RDMA driver needs to establish admin queues to support admin operations.
Export the APIs to send device commands for the RDMA driver.

Reviewed-by: Shannon Nelson <shannon.nelson@xxxxxxx>
Signed-off-by: Abhijit Gangurde <abhijit.gangurde@xxxxxxx>
---
 drivers/net/ethernet/pensando/ionic/ionic.h   |  7 ----
 .../net/ethernet/pensando/ionic/ionic_api.h   | 36 +++++++++++++++++++
 .../net/ethernet/pensando/ionic/ionic_dev.h   |  1 +
 .../net/ethernet/pensando/ionic/ionic_main.c  |  4 ++-
 4 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic.h b/drivers/net/ethernet/pensando/ionic/ionic.h
index 04f00ea94230..85198e6a806e 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic.h
@@ -65,16 +65,9 @@ struct ionic {
 	int watchdog_period;
 };
 
-struct ionic_admin_ctx {
-	struct completion work;
-	union ionic_adminq_cmd cmd;
-	union ionic_adminq_comp comp;
-};
-
 int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx);
 int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx,
 		      const int err, const bool do_msg);
-int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx);
 int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx);
 void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode,
 				   u8 status, int err);
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_api.h b/drivers/net/ethernet/pensando/ionic/ionic_api.h
index f9fcd1b67b35..d75902ca34af 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_api.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_api.h
@@ -5,6 +5,8 @@
 #define _IONIC_API_H_
 
 #include <linux/auxiliary_bus.h>
+#include "ionic_if.h"
+#include "ionic_regs.h"
 
 /**
  * struct ionic_aux_dev - Auxiliary device information
@@ -18,4 +20,38 @@ struct ionic_aux_dev {
 	struct auxiliary_device adev;
 };
 
+/**
+ * struct ionic_admin_ctx - Admin command context
+ * @work:       Work completion wait queue element
+ * @cmd:        Admin command (64B) to be copied to the queue
+ * @comp:       Admin completion (16B) copied from the queue
+ */
+struct ionic_admin_ctx {
+	struct completion work;
+	union ionic_adminq_cmd cmd;
+	union ionic_adminq_comp comp;
+};
+
+/**
+ * ionic_adminq_post_wait - Post an admin command and wait for response
+ * @lif:        Logical interface
+ * @ctx:        API admin command context
+ *
+ * Post the command to an admin queue in the ethernet driver.  If this command
+ * succeeds, then the command has been posted, but that does not indicate a
+ * completion.  If this command returns success, then the completion callback
+ * will eventually be called.
+ *
+ * Return: zero or negative error status
+ */
+int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx);
+
+/**
+ * ionic_error_to_errno - Transform ionic_if errors to os errno
+ * @code:       Ionic error number
+ *
+ * Return:      Negative OS error number or zero
+ */
+int ionic_error_to_errno(enum ionic_status_code code);
+
 #endif /* _IONIC_API_H_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
index c8c710cfe70c..bc26eb8f5779 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
@@ -12,6 +12,7 @@
 
 #include "ionic_if.h"
 #include "ionic_regs.h"
+#include "ionic_api.h"
 
 #define IONIC_MAX_TX_DESC		8192
 #define IONIC_MAX_RX_DESC		16384
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c
index daf1e82cb76b..60fc232338b9 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_main.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c
@@ -72,7 +72,7 @@ static const char *ionic_error_to_str(enum ionic_status_code code)
 	}
 }
 
-static int ionic_error_to_errno(enum ionic_status_code code)
+int ionic_error_to_errno(enum ionic_status_code code)
 {
 	switch (code) {
 	case IONIC_RC_SUCCESS:
@@ -114,6 +114,7 @@ static int ionic_error_to_errno(enum ionic_status_code code)
 		return -EIO;
 	}
 }
+EXPORT_SYMBOL_NS(ionic_error_to_errno, "NET_IONIC");
 
 static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode)
 {
@@ -480,6 +481,7 @@ int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 {
 	return __ionic_adminq_post_wait(lif, ctx, true);
 }
+EXPORT_SYMBOL_NS(ionic_adminq_post_wait, "NET_IONIC");
 
 int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 {
-- 
2.34.1