tg3: Off-by-one error in RSS setup
Matt Carlson [Sat, 5 Jun 2010 17:24:33 +0000 (17:24 +0000)]
The driver was incorrectly programming the indirection table such that
rx traffic intended for the second ring went to the first ring, rx
traffic intended for the third ring went to the second ring, etc.  This
patch changes the code so that rx traffic is diverted to the proper
ring.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tg3.c

index 86f8798..3dccc58 100644 (file)
@@ -8228,7 +8228,7 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
                for (i = 0; i < TG3_RSS_INDIR_TBL_SIZE; i++) {
                        int idx = i % sizeof(val);
 
-                       ent[idx] = i % (tp->irq_cnt - 1);
+                       ent[idx] = (i % (tp->irq_cnt - 1)) + 1;
                        if (idx == sizeof(val) - 1) {
                                tw32(reg, val);
                                reg += 4;