diff options
| -rw-r--r-- | net/mac80211/mesh_hwmp.c | 68 |
1 files changed, 35 insertions, 33 deletions
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index 324ebea10c4c..576a6e55323e 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -7,6 +7,7 @@ * published by the Free Software Foundation. */ +#include <asm/unaligned.h> #include "mesh.h" #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype) @@ -24,40 +25,41 @@ /* Reply and forward */ #define MP_F_RF 0x2 +static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae) +{ + if (ae) + offset += 6; + return le32_to_cpu(get_unaligned((__le32 *) (preq_elem + offset))); +} + /* HWMP IE processing macros */ -#define AE_F (1<<6) -#define AE_F_SET(x) (*x & AE_F) -#define PREQ_IE_FLAGS(x) (*(x)) -#define PREQ_IE_HOPCOUNT(x) (*(x + 1)) -#define PREQ_IE_TTL(x) (*(x + 2)) -#define PREQ_IE_PREQ_ID(x) le32_to_cpu(*((__le32 *) (x + 3))) -#define PREQ_IE_ORIG_ADDR(x) (x + 7) -#define PREQ_IE_ORIG_DSN(x) le32_to_cpu(*((__le32 *) (x + 13))) -#define PREQ_IE_LIFETIME(x) le32_to_cpu(*((__le32 *) \ - (AE_F_SET(x) ? x + 23 : x + 17))) -#define PREQ_IE_METRIC(x) le32_to_cpu(*((__le32 *) \ - (AE_F_SET(x) ? x + 27 : x + 21))) -#define PREQ_IE_DST_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26)) -#define PREQ_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27) -#define PREQ_IE_DST_DSN(x) le32_to_cpu(*((__le32 *) \ - (AE_F_SET(x) ? x + 39 : x + 33))) - - -#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x) -#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x) -#define PREP_IE_TTL(x) PREQ_IE_TTL(x) -#define PREP_IE_ORIG_ADDR(x) (x + 3) -#define PREP_IE_ORIG_DSN(x) le32_to_cpu(*((__le32 *) (x + 9))) -#define PREP_IE_LIFETIME(x) le32_to_cpu(*((__le32 *) \ - (AE_F_SET(x) ? x + 19 : x + 13))) -#define PREP_IE_METRIC(x) le32_to_cpu(*((__le32 *) \ - (AE_F_SET(x) ? x + 23 : x + 17))) -#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21) -#define PREP_IE_DST_DSN(x) le32_to_cpu(*((__le32 *) \ - (AE_F_SET(x) ? x + 33 : x + 27))) - -#define PERR_IE_DST_ADDR(x) (x + 2) -#define PERR_IE_DST_DSN(x) le32_to_cpu(*((__le32 *) (x + 8))) +#define AE_F (1<<6) +#define AE_F_SET(x) (*x & AE_F) +#define PREQ_IE_FLAGS(x) (*(x)) +#define PREQ_IE_HOPCOUNT(x) (*(x + 1)) +#define PREQ_IE_TTL(x) (*(x + 2)) +#define PREQ_IE_PREQ_ID(x) u32_field_get(x, 3, 0) +#define PREQ_IE_ORIG_ADDR(x) (x + 7) +#define PREQ_IE_ORIG_DSN(x) u32_field_get(x, 13, 0); +#define PREQ_IE_LIFETIME(x) u32_field_get(x, 17, AE_F_SET(x)); +#define PREQ_IE_METRIC(x) u32_field_get(x, 21, AE_F_SET(x)); +#define PREQ_IE_DST_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26)) +#define PREQ_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27) +#define PREQ_IE_DST_DSN(x) u32_field_get(x, 33, AE_F_SET(x)); + + +#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x) +#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x) +#define PREP_IE_TTL(x) PREQ_IE_TTL(x) +#define PREP_IE_ORIG_ADDR(x) (x + 3) +#define PREP_IE_ORIG_DSN(x) u32_field_get(x, 9, 0); +#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x)); +#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x)); +#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21) +#define PREP_IE_DST_DSN(x) u32_field_get(x, 27, AE_F_SET(x)); + +#define PERR_IE_DST_ADDR(x) (x + 2) +#define PERR_IE_DST_DSN(x) u32_field_get(x, 8, 0); #define TU_TO_EXP_TIME(x) (jiffies + msecs_to_jiffies(x * 1024 / 1000)) #define MSEC_TO_TU(x) (x*1000/1024) |