The patch titled mac80211: michael.c use kernel-provided infrastructure has been added to the -mm tree. Its filename is mac80211-michaelc-use-kernel-provided-infrastructure.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: mac80211: michael.c use kernel-provided infrastructure From: Harvey Harrison <harvey.harrison@xxxxxxxxx> Replace private implementation of bit rotation and unaligned access helpers with kernel-provided implementation. Fold xswap helper in its one usage in the michael_block macro. Signed-off-by: Harvey Harrison <harvey.harrison@xxxxxxxxx> Cc: "John W. Linville" <linville@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- net/mac80211/michael.c | 60 +++++++++------------------------------ 1 file changed, 14 insertions(+), 46 deletions(-) diff -puN net/mac80211/michael.c~mac80211-michaelc-use-kernel-provided-infrastructure net/mac80211/michael.c --- a/net/mac80211/michael.c~mac80211-michaelc-use-kernel-provided-infrastructure +++ a/net/mac80211/michael.c @@ -8,71 +8,39 @@ */ #include <linux/types.h> +#include <linux/bitops.h> +#include <asm/unaligned.h> #include "michael.h" -static inline u32 rotr(u32 val, int bits) -{ - return (val >> bits) | (val << (32 - bits)); -} - - -static inline u32 rotl(u32 val, int bits) -{ - return (val << bits) | (val >> (32 - bits)); -} - - -static inline u32 xswap(u32 val) -{ - return ((val & 0xff00ff00) >> 8) | ((val & 0x00ff00ff) << 8); -} - - #define michael_block(l, r) \ do { \ - r ^= rotl(l, 17); \ + r ^= rol32(l, 17); \ l += r; \ - r ^= xswap(l); \ + r ^= ((l & 0xff00ff00) >> 8) | ((l & 0x00ff00ff) << 8); \ l += r; \ - r ^= rotl(l, 3); \ + r ^= rol32(l, 3); \ l += r; \ - r ^= rotr(l, 2); \ + r ^= ror32(l, 2); \ l += r; \ } while (0) - -static inline u32 michael_get32(u8 *data) -{ - return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24); -} - - -static inline void michael_put32(u32 val, u8 *data) -{ - data[0] = val & 0xff; - data[1] = (val >> 8) & 0xff; - data[2] = (val >> 16) & 0xff; - data[3] = (val >> 24) & 0xff; -} - - void michael_mic(u8 *key, u8 *da, u8 *sa, u8 priority, u8 *data, size_t data_len, u8 *mic) { u32 l, r, val; size_t block, blocks, left; - l = michael_get32(key); - r = michael_get32(key + 4); + l = get_unaligned_le32(key); + r = get_unaligned_le32(key + 4); /* A pseudo header (DA, SA, Priority, 0, 0, 0) is used in Michael MIC * calculation, but it is _not_ transmitted */ - l ^= michael_get32(da); + l ^= get_unaligned_le32(da); michael_block(l, r); - l ^= da[4] | (da[5] << 8) | (sa[0] << 16) | (sa[1] << 24); + l ^= get_unaligned_le16(&da[4]) | (get_unaligned_le16(sa) << 16); michael_block(l, r); - l ^= michael_get32(&sa[2]); + l ^= get_unaligned_le32(&sa[2]); michael_block(l, r); l ^= priority; michael_block(l, r); @@ -82,7 +50,7 @@ void michael_mic(u8 *key, u8 *da, u8 *sa left = data_len % 4; for (block = 0; block < blocks; block++) { - l ^= michael_get32(&data[block * 4]); + l ^= get_unaligned_le32(&data[block * 4]); michael_block(l, r); } @@ -99,6 +67,6 @@ void michael_mic(u8 *key, u8 *da, u8 *sa /* last block is zero, so l ^ 0 = l */ michael_block(l, r); - michael_put32(l, mic); - michael_put32(r, mic + 4); + put_unaligned_le32(l, mic); + put_unaligned_le32(r, mic + 4); } _ Patches currently in -mm which might be from harvey.harrison@xxxxxxxxx are origin.patch char-fix-sparse-shadowed-variable-warnings-in-espc.patch char-espc-fix-possible-double-unlock.patch char-rocketc-fix-sparse-variable-shadowing-and-int-as-null-pointer.patch cycladesc-fix-sparse-shadowed-variable-warnings.patch epcac-static-functions-and-integer-as-null-pointer-fixes.patch add-macros-similar-to-min-max-min_t-max_t.patch drivers-replace-remaining-__function__-occurrences.patch mm-remove-remaining-__function__-occurances.patch kernel-replace-remaining-__function__-occurances.patch lib-replace-remaining-__function__-occurances.patch afs-replace-remaining-__function__-occurrences.patch fs-replace-remaining-__function__-occurrences.patch drivers-char-replace-remaining-__function__-occurrences.patch serial-replace-remaining-__function__-occurrences.patch frv-unbreak-misalignment-handling-changes.patch cifs-remove-global_extern-macro.patch input-replace-remaining-__function__-occurrences.patch git-kvm.patch git-mips.patch nfs-replace-remaining-__function__-occurrences.patch parisc-replace-remaining-__function__-occurences.patch drivers-parisc-replace-remaining-__function__-occurrences.patch pcmcia-replace-remaining-__function__-occurrences.patch scsi-replace-remaining-__function__-occurrences.patch fusion-replace-remaining-__function__-occurrences.patch scsi-replace-__inline-with-inline.patch git-watchdog.patch mac80211-michaelc-use-kernel-provided-infrastructure.patch mac80211-introduce-struct-michael_mic_ctx-and-static-helpers.patch mac80211-tkipc-use-kernel-provided-infrastructure.patch mac80211-add-const-remove-unused-function-make-one-function-static.patch mac80211-add-a-struct-to-hold-tkip-context.patch mac80211-tkipc-use-struct-tkip_ctx-in-phase-1-key-mixing.patch mac80211-tkipc-use-struct-tkip_ctx-in-phase-2-key-mixing.patch git-xfs.patch xtensa-replace-remaining-__function__-occurences.patch ide-eliminate-fit-macro.patch ata-remove-fit-macro.patch b43-replace-limit_value-macro-with-clamp_val.patch b43legacy-replace-limit_value-macro-with-clamp_val.patch fuse-use-clamp-rather-than-nested-min-max.patch ide-tape-use-clamp_t-rather-than-nested-min_t-max_t.patch input-ff-memlessc-use-clamp_val-macro.patch dccp-ccid2c-ccid3c-use-clamp-clamp_t.patch block-remove-remaining-__function__-occurances.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html