Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7b31f7ffa9ed7ba5fbe1cab8fb17a8c545e6a0eb
Commit: 7b31f7ffa9ed7ba5fbe1cab8fb17a8c545e6a0eb
Parent: 8b31cfbcd1b54362ef06c85beb40e65a349169a2
Author: Peter Korsgaard <[EMAIL PROTECTED]>
AuthorDate: Thu Nov 22 12:25:13 2007 +0100
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Fri Nov 23 22:09:01 2007 -0500
smc911x: Fix multicast handling
smc911x_set_multicast_list fails to fill out the multicast hash table
correctly; Bit 1 was used rather than bit 5 to decide if the lower or
upper register should be used.
The function is at the same time cleaned up by calling ether_crc rather
than using it's own bit reversal table.
Signed-off-by: Peter Korsgaard <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/net/smc911x.c | 17 ++++-------------
1 files changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 69a78b3..1a3d80b 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -1379,13 +1379,6 @@ static void smc911x_set_multicast_list(struct net_device
*dev)
unsigned int multicast_table[2];
unsigned int mcr, update_multicast = 0;
unsigned long flags;
- /* table for flipping the order of 5 bits */
- static const unsigned char invert5[] =
- {0x00, 0x10, 0x08, 0x18, 0x04, 0x14, 0x0C, 0x1C,
- 0x02, 0x12, 0x0A, 0x1A, 0x06, 0x16, 0x0E, 0x1E,
- 0x01, 0x11, 0x09, 0x19, 0x05, 0x15, 0x0D, 0x1D,
- 0x03, 0x13, 0x0B, 0x1B, 0x07, 0x17, 0x0F, 0x1F};
-
DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__);
@@ -1432,7 +1425,7 @@ static void smc911x_set_multicast_list(struct net_device
*dev)
cur_addr = dev->mc_list;
for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) {
- int position;
+ u32 position;
/* do we have a pointer here? */
if (!cur_addr)
@@ -1442,12 +1435,10 @@ static void smc911x_set_multicast_list(struct
net_device *dev)
if (!(*cur_addr->dmi_addr & 1))
continue;
- /* only use the low order bits */
- position = crc32_le(~0, cur_addr->dmi_addr, 6) & 0x3f;
+ /* upper 6 bits are used as hash index */
+ position = ether_crc(ETH_ALEN, cur_addr->dmi_addr)>>26;
- /* do some messy swapping to put the bit in the right
spot */
- multicast_table[invert5[position&0x1F]&0x1] |=
- (1<<invert5[(position>>1)&0x1F]);
+ multicast_table[position>>5] |= 1 << (position&0x1f);
}
/* be sure I get rid of flags I might have set */
-
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