summaryrefslogtreecommitdiff
path: root/drivers/net/npe/IxEthDBLearning.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/npe/IxEthDBLearning.c')
-rw-r--r--drivers/net/npe/IxEthDBLearning.c125
1 files changed, 0 insertions, 125 deletions
diff --git a/drivers/net/npe/IxEthDBLearning.c b/drivers/net/npe/IxEthDBLearning.c
deleted file mode 100644
index 1080d112de..0000000000
--- a/drivers/net/npe/IxEthDBLearning.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/**
- * @file IxEthDBLearning.c
- *
- * @par
- * IXP400 SW Release version 2.0
- *
- * -- Copyright Notice --
- *
- * @par
- * Copyright 2001-2005, Intel Corporation.
- * All rights reserved.
- *
- * @par
- * SPDX-License-Identifier: BSD-3-Clause
- * @par
- * -- End of Copyright Notice --
- */
-
-#include "IxEthDB_p.h"
-
-/**
- * @brief hashes the mac address in a mac descriptor with a XOR function
- *
- * @param entry pointer to a mac descriptor to be hashed
- *
- * This function only extracts the mac address and employs ixEthDBKeyXORHash()
- * to do the actual hashing.
- * Used only to add a whole entry to a hash table, as opposed to searching which
- * takes only a key and uses the key hashing directly.
- *
- * @see ixEthDBKeyXORHash()
- *
- * @return the hash value
- *
- * @internal
- */
-UINT32 ixEthDBEntryXORHash(void *entry)
-{
- MacDescriptor *descriptor = (MacDescriptor *) entry;
-
- return ixEthDBKeyXORHash(descriptor->macAddress);
-}
-
-/**
- * @brief hashes a mac address
- *
- * @param key pointer to a 6 byte structure (typically an IxEthDBMacAddr pointer)
- * to be hashed
- *
- * Given a 6 bytes MAC address, the hash used is:
- *
- * hash(MAC[0:5]) = MAC[0:1] ^ MAC[2:3] ^ MAC[4:5]
- *
- * Used by the hash table to search and remove entries based
- * solely on their keys (mac addresses).
- *
- * @return the hash value
- *
- * @internal
- */
-UINT32 ixEthDBKeyXORHash(void *key)
-{
- UINT32 hashValue;
- UINT8 *value = (UINT8 *) key;
-
- hashValue = (value[5] << 8) | value[4];
- hashValue ^= (value[3] << 8) | value[2];
- hashValue ^= (value[1] << 8) | value[0];
-
- return hashValue;
-}
-
-/**
- * @brief mac descriptor match function
- *
- * @param reference mac address (typically an IxEthDBMacAddr pointer) structure
- * @param entry pointer to a mac descriptor whose key (mac address) is to be
- * matched against the reference key
- *
- * Used by the hash table to retrieve entries. Hashing entries can produce
- * collisions, i.e. descriptors with different mac addresses and the same
- * hash value, where this function is used to differentiate entries.
- *
- * @retval true if the entry matches the reference key (equal addresses)
- * @retval false if the entry does not match the reference key
- *
- * @internal
- */
-BOOL ixEthDBAddressMatch(void *reference, void *entry)
-{
- return (ixEthDBAddressCompare(reference, ((MacDescriptor *) entry)->macAddress) == 0);
-}
-
-/**
- * @brief compares two mac addresses
- *
- * @param mac1 first mac address to compare
- * @param mac2 second mac address to compare
- *
- * This comparison works in a similar way to strcmp, producing similar results.
- * Used to insert values keyed on mac addresses into binary search trees.
- *
- * @retval -1 if mac1 < mac2
- * @retval 0 if ma1 == mac2
- * @retval 1 if mac1 > mac2
- */
-UINT32 ixEthDBAddressCompare(UINT8 *mac1, UINT8 *mac2)
-{
- UINT32 local_index;
-
- for (local_index = 0 ; local_index < IX_IEEE803_MAC_ADDRESS_SIZE ; local_index++)
- {
- if (mac1[local_index] > mac2[local_index])
- {
- return 1;
- }
- else if (mac1[local_index] < mac2[local_index])
- {
- return -1;
- }
- }
-
- return 0;
-}
-