diff options
| -rw-r--r-- | drivers/net/e1000e/lib.c | 62 |
1 files changed, 18 insertions, 44 deletions
diff --git a/drivers/net/e1000e/lib.c b/drivers/net/e1000e/lib.c index ac2f34e1836..18a4f5902f3 100644 --- a/drivers/net/e1000e/lib.c +++ b/drivers/net/e1000e/lib.c @@ -159,41 +159,6 @@ void e1000e_rar_set(struct e1000_hw *hw, u8 *addr, u32 index) } /** - * e1000_mta_set - Set multicast filter table address - * @hw: pointer to the HW structure - * @hash_value: determines the MTA register and bit to set - * - * The multicast table address is a register array of 32-bit registers. - * The hash_value is used to determine what register the bit is in, the - * current value is read, the new bit is OR'd in and the new value is - * written back into the register. - **/ -static void e1000_mta_set(struct e1000_hw *hw, u32 hash_value) -{ - u32 hash_bit, hash_reg, mta; - - /* - * The MTA is a register array of 32-bit registers. It is - * treated like an array of (32*mta_reg_count) bits. We want to - * set bit BitArray[hash_value]. So we figure out what register - * the bit is in, read it, OR in the new bit, then write - * back the new value. The (hw->mac.mta_reg_count - 1) serves as a - * mask to bits 31:5 of the hash value which gives us the - * register we're modifying. The hash bit within that register - * is determined by the lower 5 bits of the hash value. - */ - hash_reg = (hash_value >> 5) & (hw->mac.mta_reg_count - 1); - hash_bit = hash_value & 0x1F; - - mta = E1000_READ_REG_ARRAY(hw, E1000_MTA, hash_reg); - - mta |= (1 << hash_bit); - - E1000_WRITE_REG_ARRAY(hw, E1000_MTA, hash_reg, mta); - e1e_flush(); -} - -/** * e1000_hash_mc_addr - Generate a multicast hash value * @hw: pointer to the HW structure * @mc_addr: pointer to a multicast address @@ -281,8 +246,13 @@ void e1000e_update_mc_addr_list_generic(struct e1000_hw *hw, u8 *mc_addr_list, u32 mc_addr_count, u32 rar_used_count, u32 rar_count) { - u32 hash_value; u32 i; + u32 *mcarray = kzalloc(hw->mac.mta_reg_count * sizeof(u32), GFP_ATOMIC); + + if (!mcarray) { + printk(KERN_ERR "multicast array memory allocation failed\n"); + return; + } /* * Load the first set of multicast addresses into the exact @@ -302,20 +272,24 @@ void e1000e_update_mc_addr_list_generic(struct e1000_hw *hw, } } - /* Clear the old settings from the MTA */ - hw_dbg(hw, "Clearing MTA\n"); - for (i = 0; i < hw->mac.mta_reg_count; i++) { - E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0); - e1e_flush(); - } - /* Load any remaining multicast addresses into the hash table. */ for (; mc_addr_count > 0; mc_addr_count--) { + u32 hash_value, hash_reg, hash_bit, mta; hash_value = e1000_hash_mc_addr(hw, mc_addr_list); hw_dbg(hw, "Hash value = 0x%03X\n", hash_value); - e1000_mta_set(hw, hash_value); + hash_reg = (hash_value >> 5) & (hw->mac.mta_reg_count - 1); + hash_bit = hash_value & 0x1F; + mta = (1 << hash_bit); + mcarray[hash_reg] |= mta; mc_addr_list += ETH_ALEN; } + + /* write the hash table completely */ + for (i = 0; i < hw->mac.mta_reg_count; i++) + E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, mcarray[i]); + + e1e_flush(); + kfree(mcarray); } /** |