From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: Fri, 8 Apr 2022 15:07:44 -0700
Subject: Bluetooth: Add bt_status
Patch-mainline: v6.0-rc1
Git-commit: ca2045e059c3aa1b06c9aed448672bc86dfdce11
References: jsc#PED-1407

This adds bt_status which can be used to convert Unix errno to
Bluetooth status.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 include/net/bluetooth/bluetooth.h |    1 
 net/bluetooth/lib.c               |   71 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)

--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -521,6 +521,7 @@ static inline struct sk_buff *bt_skb_sen
 }
 
 int bt_to_errno(u16 code);
+__u8 bt_status(int err);
 
 void hci_sock_set_flag(struct sock *sk, int nr);
 void hci_sock_clear_flag(struct sock *sk, int nr);
--- a/net/bluetooth/lib.c
+++ b/net/bluetooth/lib.c
@@ -135,6 +135,77 @@ int bt_to_errno(__u16 code)
 }
 EXPORT_SYMBOL(bt_to_errno);
 
+/* Unix errno to Bluetooth error codes mapping */
+__u8 bt_status(int err)
+{
+	/* Don't convert if already positive value */
+	if (err >= 0)
+		return err;
+
+	switch (err) {
+	case -EBADRQC:
+		return 0x01;
+
+	case -ENOTCONN:
+		return 0x02;
+
+	case -EIO:
+		return 0x03;
+
+	case -EHOSTDOWN:
+		return 0x04;
+
+	case -EACCES:
+		return 0x05;
+
+	case -EBADE:
+		return 0x06;
+
+	case -ENOMEM:
+		return 0x07;
+
+	case -ETIMEDOUT:
+		return 0x08;
+
+	case -EMLINK:
+		return 0x09;
+
+	case EALREADY:
+		return 0x0b;
+
+	case -EBUSY:
+		return 0x0c;
+
+	case -ECONNREFUSED:
+		return 0x0d;
+
+	case -EOPNOTSUPP:
+		return 0x11;
+
+	case -EINVAL:
+		return 0x12;
+
+	case -ECONNRESET:
+		return 0x13;
+
+	case -ECONNABORTED:
+		return 0x16;
+
+	case ELOOP:
+		return 0x17;
+
+	case -EPROTONOSUPPORT:
+		return 0x1a;
+
+	case -EPROTO:
+		return 0x19;
+
+	default:
+		return 0x1f;
+	}
+}
+EXPORT_SYMBOL(bt_status);
+
 void bt_info(const char *format, ...)
 {
 	struct va_format vaf;