The patch titled
Subject: vsprintf: add %pMR for Bluetooth MAC address
has been added to the -mm tree. Its filename is
vsprintf-add-%pmr-for-bluetooth-mac-address.patch
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------------------------------------------------------
From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Subject: vsprintf: add %pMR for Bluetooth MAC address
Bluetooth uses mostly LE byte order which is reversed for visual
interpretation. Currently in Bluetooth in use unsafe batostr function.
This is a slightly modified version of Joe's patch (sent Sat, Dec 4,
2010).
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Cc: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/vsprintf.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
diff -puN lib/vsprintf.c~vsprintf-add-%pmr-for-bluetooth-mac-address lib/vsprintf.c
--- a/lib/vsprintf.c~vsprintf-add-%pmr-for-bluetooth-mac-address
+++ a/lib/vsprintf.c
@@ -662,15 +662,28 @@ char *mac_address_string(char *buf, char
char *p = mac_addr;
int i;
char separator;
+ bool reversed = false;
- if (fmt[1] == 'F') { /* FDDI canonical format */
+ switch (fmt[1]) {
+ case 'F':
separator = '-';
- } else {
+ break;
+
+ case 'R':
+ reversed = true;
+ /* fall through */
+
+ default:
separator = ':';
+ break;
}
for (i = 0; i < 6; i++) {
- p = hex_byte_pack(p, addr[i]);
+ if (reversed)
+ p = hex_byte_pack(p, addr[5 - i]);
+ else
+ p = hex_byte_pack(p, addr[i]);
+
if (fmt[0] == 'M' && i != 5)
*p++ = separator;
}
@@ -933,6 +946,7 @@ int kptr_restrict __read_mostly;
* - 'm' For a 6-byte MAC address, it prints the hex address without colons
* - 'MF' For a 6-byte MAC FDDI address, it prints the address
* with a dash-separated hex notation
+ * - '[mM]R For a 6-byte MAC address, Reverse order (Bluetooth)
* - 'I' [46] for IPv4/IPv6 addresses printed in the usual way
* IPv4 uses dot-separated decimal without leading 0's (1.2.3.4)
* IPv6 uses colon separated network-order 16 bit hex with leading 0's
@@ -995,7 +1009,8 @@ char *pointer(const char *fmt, char *buf
return resource_string(buf, end, ptr, spec, fmt);
case 'M': /* Colon separated: 00:01:02:03:04:05 */
case 'm': /* Contiguous: 000102030405 */
- /* [mM]F (FDDI, bit reversed) */
+ /* [mM]F (FDDI) */
+ /* [mM]R (Reverse order; Bluetooth) */
return mac_address_string(buf, end, ptr, spec, fmt);
case 'I': /* Formatted IP supported
* 4: 1.2.3.4
_
Subject: Subject: vsprintf: add %pMR for Bluetooth MAC address
Patches currently in -mm which might be from andrei.emeltchenko@xxxxxxxxx are
linux-next.patch
vsprintf-add-%pmr-for-bluetooth-mac-address.patch
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