From bc7259a2ce764ea16200eb9e53f6e136e918d065 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 7 Jan 2010 11:43:50 +0000 Subject: lib/vsprintf.c: Add %pMF to format FDDI bit reversed MAC addresses On Mon, 2010-01-04 at 23:43 +0000, Maciej W. Rozycki wrote: > The example below shows an address, and the sequence of bits or symbols > that would be transmitted when the address is used in the Source Address > or Destination Address fields on the MAC header. The transmission line > shows the address bits in the order transmitted, from left to right. For > IEEE 802 LANs these correspond to actual bits on the medium. The FDDI > symbols line shows how the FDDI PHY sends the address bits as encoded > symbols. > > MSB: 35:7B:12:00:00:01 > Canonical: AC-DE-48-00-00-80 > Transmission: 00110101 01111011 00010010 00000000 00000000 00000001 > FDDI Symbols: 35 7B 12 00 00 01" > > Please note that this address has its group bit clear. > > This notation is also defined in the "FDDI MEDIA ACCESS CONTROL-2 > (MAC-2)" (X3T9/92-120) document although that book does not have a need > to use the MSB form and it's skipped. Adds 6 bytes to object size for x86 New: $ size lib/vsprintf.o text data bss dec hex filename 8664 0 2 8666 21da lib/vsprintf.o $ size lib/vsprintf.o text data bss dec hex filename 8658 0 2 8660 21d4 lib/vsprintf.o Signed-off-by: Joe Perches Signed-off-by: David S. Miller --- lib/vsprintf.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'lib/vsprintf.c') diff --git a/lib/vsprintf.c b/lib/vsprintf.c index d4996cf46eb6..dc48d2b32ebd 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include /* for PAGE_SIZE */ @@ -681,11 +682,21 @@ static char *mac_address_string(char *buf, char *end, u8 *addr, char mac_addr[sizeof("xx:xx:xx:xx:xx:xx")]; char *p = mac_addr; int i; + bool bitrev; + char separator; + + if (fmt[1] == 'F') { /* FDDI canonical format */ + bitrev = true; + separator = '-'; + } else { + bitrev = false; + separator = ':'; + } for (i = 0; i < 6; i++) { - p = pack_hex_byte(p, addr[i]); + p = pack_hex_byte(p, bitrev ? bitrev8(addr[i]) : addr[i]); if (fmt[0] == 'M' && i != 5) - *p++ = ':'; + *p++ = separator; } *p = '\0'; @@ -896,6 +907,10 @@ static char *uuid_string(char *buf, char *end, const u8 *addr, * - 'M' For a 6-byte MAC address, it prints the address in the * usual colon-separated hex notation * - '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 with bit reversed bytes + * - 'mF' For a 6-byte MAC FDDI address, it prints the address + * in hex notation without separators with bit reversed bytes * - '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 @@ -939,6 +954,7 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, 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) */ return mac_address_string(buf, end, ptr, spec, fmt); case 'I': /* Formatted IP supported * 4: 1.2.3.4 -- cgit v1.2.2 From c8e000604bce02a87742240a9b716a0f1b680c0b Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 11 Jan 2010 00:44:14 -0800 Subject: lib: Kill bit-reversed FDDI MAC output case, it's bogus. Signed-off-by: Joe Perches Signed-off-by: David S. Miller --- lib/vsprintf.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'lib/vsprintf.c') diff --git a/lib/vsprintf.c b/lib/vsprintf.c index dc48d2b32ebd..e83e3e79a989 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #include /* for PAGE_SIZE */ @@ -682,19 +681,16 @@ static char *mac_address_string(char *buf, char *end, u8 *addr, char mac_addr[sizeof("xx:xx:xx:xx:xx:xx")]; char *p = mac_addr; int i; - bool bitrev; char separator; if (fmt[1] == 'F') { /* FDDI canonical format */ - bitrev = true; separator = '-'; } else { - bitrev = false; separator = ':'; } for (i = 0; i < 6; i++) { - p = pack_hex_byte(p, bitrev ? bitrev8(addr[i]) : addr[i]); + p = pack_hex_byte(p, addr[i]); if (fmt[0] == 'M' && i != 5) *p++ = separator; } @@ -908,9 +904,7 @@ static char *uuid_string(char *buf, char *end, const u8 *addr, * usual colon-separated hex notation * - '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 with bit reversed bytes - * - 'mF' For a 6-byte MAC FDDI address, it prints the address - * in hex notation without separators with bit reversed bytes + * with a dash-separated hex notation * - '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 -- cgit v1.2.2 From 0159f24ee764927bf44c1a25473bd4517febd21c Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Wed, 13 Jan 2010 20:23:30 -0800 Subject: lib/vsprintf.c: Add IPV4 options %pI4[hnbl] for host, network, big and little endian This should allow the removal of the #defines and uses of NIPQUAD and NIPQUAD_FMT Signed-off-by: Joe Perches Signed-off-by: David S. Miller --- lib/vsprintf.c | 36 +++++++++++++++++++++++++++++++----- 1 file changed, 31 insertions(+), 5 deletions(-) (limited to 'lib/vsprintf.c') diff --git a/lib/vsprintf.c b/lib/vsprintf.c index e83e3e79a989..add0446dd921 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -699,13 +699,37 @@ static char *mac_address_string(char *buf, char *end, u8 *addr, return string(buf, end, mac_addr, spec); } -static char *ip4_string(char *p, const u8 *addr, bool leading_zeros) +static char *ip4_string(char *p, const u8 *addr, const char *fmt) { int i; - + bool leading_zeros = (fmt[0] == 'i'); + int index; + int step; + + switch (fmt[2]) { + case 'h': +#ifdef __BIG_ENDIAN + index = 0; + step = 1; +#else + index = 3; + step = -1; +#endif + break; + case 'l': + index = 3; + step = -1; + break; + case 'n': + case 'b': + default: + index = 0; + step = 1; + break; + } for (i = 0; i < 4; i++) { char temp[3]; /* hold each IP quad in reverse order */ - int digits = put_dec_trunc(temp, addr[i]) - temp; + int digits = put_dec_trunc(temp, addr[index]) - temp; if (leading_zeros) { if (digits < 3) *p++ = '0'; @@ -717,6 +741,7 @@ static char *ip4_string(char *p, const u8 *addr, bool leading_zeros) *p++ = temp[digits]; if (i < 3) *p++ = '.'; + index += step; } *p = '\0'; @@ -796,7 +821,7 @@ static char *ip6_compressed_string(char *p, const char *addr) if (useIPv4) { if (needcolon) *p++ = ':'; - p = ip4_string(p, &in6.s6_addr[12], false); + p = ip4_string(p, &in6.s6_addr[12], "I4"); } *p = '\0'; @@ -836,7 +861,7 @@ static char *ip4_addr_string(char *buf, char *end, const u8 *addr, { char ip4_addr[sizeof("255.255.255.255")]; - ip4_string(ip4_addr, addr, fmt[0] == 'i'); + ip4_string(ip4_addr, addr, fmt); return string(buf, end, ip4_addr, spec); } @@ -911,6 +936,7 @@ static char *uuid_string(char *buf, char *end, const u8 *addr, * - 'i' [46] for 'raw' IPv4/IPv6 addresses * IPv6 omits the colons (01020304...0f) * IPv4 uses dot-separated decimal with leading 0's (010.123.045.006) + * - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order * - 'I6c' for IPv6 addresses printed as specified by * http://www.ietf.org/id/draft-kawamura-ipv6-text-representation-03.txt * - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form -- cgit v1.2.2