diff options
Diffstat (limited to 'drivers/net/wireless/zd1211rw/zd_chip.h')
| -rw-r--r-- | drivers/net/wireless/zd1211rw/zd_chip.h | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.h b/drivers/net/wireless/zd1211rw/zd_chip.h index ca892b9a644..a4e3cee9b59 100644 --- a/drivers/net/wireless/zd1211rw/zd_chip.h +++ b/drivers/net/wireless/zd1211rw/zd_chip.h @@ -390,10 +390,19 @@ #define CR_BSSID_P1 CTL_REG(0x0618) #define CR_BSSID_P2 CTL_REG(0x061C) #define CR_BCN_PLCP_CFG CTL_REG(0x0620) + +/* Group hash table for filtering incoming packets. + * + * The group hash table is 64 bit large and split over two parts. The first + * part is the lower part. The upper 6 bits of the last byte of the target + * address are used as index. Packets are received if the hash table bit is + * set. This is used for multicast handling, but for broadcasts (address + * ff:ff:ff:ff:ff:ff) the highest bit in the second table must also be set. + */ #define CR_GROUP_HASH_P1 CTL_REG(0x0624) #define CR_GROUP_HASH_P2 CTL_REG(0x0628) -#define CR_RX_TIMEOUT CTL_REG(0x062C) +#define CR_RX_TIMEOUT CTL_REG(0x062C) /* Basic rates supported by the BSS. When producing ACK or CTS messages, the * device will use a rate in this table that is less than or equal to the rate * of the incoming frame which prompted the response */ @@ -864,4 +873,36 @@ u8 zd_rx_strength_percent(u8 rssi); u16 zd_rx_rate(const void *rx_frame, const struct rx_status *status); +struct zd_mc_hash { + u32 low; + u32 high; +}; + +static inline void zd_mc_clear(struct zd_mc_hash *hash) +{ + hash->low = 0; + /* The interfaces must always received broadcasts. + * The hash of the broadcast address ff:ff:ff:ff:ff:ff is 63. + */ + hash->high = 0x80000000; +} + +static inline void zd_mc_add_all(struct zd_mc_hash *hash) +{ + hash->low = hash->high = 0xffffffff; +} + +static inline void zd_mc_add_addr(struct zd_mc_hash *hash, u8 *addr) +{ + unsigned int i = addr[5] >> 2; + if (i < 32) { + hash->low |= 1 << i; + } else { + hash->high |= 1 << (i-32); + } +} + +int zd_chip_set_multicast_hash(struct zd_chip *chip, + struct zd_mc_hash *hash); + #endif /* _ZD_CHIP_H */ |