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authorMichael Chan <mchan@broadcom.com>2007-02-20 23:25:40 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2007-02-26 11:42:47 -0800
commit7f62ad5d37f4e43c841e92c6f159c93dcf2d2cdd (patch)
treef8d0e5d2dcc5e7783ace1f966b9e008278357067 /drivers/net
parentad930650c0e694233971c56e8de8e78b896e2613 (diff)
downloadop-kernel-dev-7f62ad5d37f4e43c841e92c6f159c93dcf2d2cdd.zip
op-kernel-dev-7f62ad5d37f4e43c841e92c6f159c93dcf2d2cdd.tar.gz
[TG3]: TSO workaround fixes.
1. Add race condition check after netif_stop_queue(). tg3_tx() runs without netif_tx_lock and can race with tg3_start_xmit_dma_bug() -> tg3_tso_bug(). 2. Firmware TSO in 5703/5704/5705 also have the same TSO limitation, i.e. they cannot handle TSO headers bigger than 80 bytes. Rename TG3_FL2_HW_TSO_1_BUG to TG3_FL2_TSO_BUG and set this flag on these chips as well. 3. Update version to 3.74. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/tg3.c20
-rw-r--r--drivers/net/tg3.h2
2 files changed, 12 insertions, 10 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 81a1c2e..26c6ac4 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -64,8 +64,8 @@
#define DRV_MODULE_NAME "tg3"
#define PFX DRV_MODULE_NAME ": "
-#define DRV_MODULE_VERSION "3.73"
-#define DRV_MODULE_RELDATE "February 12, 2007"
+#define DRV_MODULE_VERSION "3.74"
+#define DRV_MODULE_RELDATE "February 20, 2007"
#define TG3_DEF_MAC_MODE 0
#define TG3_DEF_RX_MODE 0
@@ -3993,7 +3993,10 @@ static int tg3_tso_bug(struct tg3 *tp, struct sk_buff *skb)
/* Estimate the number of fragments in the worst case */
if (unlikely(tg3_tx_avail(tp) <= (skb_shinfo(skb)->gso_segs * 3))) {
netif_stop_queue(tp->dev);
- return NETDEV_TX_BUSY;
+ if (tg3_tx_avail(tp) <= (skb_shinfo(skb)->gso_segs * 3))
+ return NETDEV_TX_BUSY;
+
+ netif_wake_queue(tp->dev);
}
segs = skb_gso_segment(skb, tp->dev->features & ~NETIF_F_TSO);
@@ -4061,7 +4064,7 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev)
hdr_len = ip_tcp_len + tcp_opt_len;
if (unlikely((ETH_HLEN + hdr_len) > 80) &&
- (tp->tg3_flags2 & TG3_FLG2_HW_TSO_1_BUG))
+ (tp->tg3_flags2 & TG3_FLG2_TSO_BUG))
return (tg3_tso_bug(tp, skb));
base_flags |= (TXD_FLAG_CPU_PRE_DMA |
@@ -8137,7 +8140,7 @@ static int tg3_set_ringparam(struct net_device *dev, struct ethtool_ringparam *e
(ering->rx_jumbo_pending > TG3_RX_JUMBO_RING_SIZE - 1) ||
(ering->tx_pending > TG3_TX_RING_SIZE - 1) ||
(ering->tx_pending <= MAX_SKB_FRAGS) ||
- ((tp->tg3_flags2 & TG3_FLG2_HW_TSO_1_BUG) &&
+ ((tp->tg3_flags2 & TG3_FLG2_TSO_BUG) &&
(ering->tx_pending <= (MAX_SKB_FRAGS * 3))))
return -EINVAL;
@@ -10557,12 +10560,11 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
tp->tg3_flags2 |= TG3_FLG2_HW_TSO_2;
tp->tg3_flags2 |= TG3_FLG2_1SHOT_MSI;
} else {
- tp->tg3_flags2 |= TG3_FLG2_HW_TSO_1 |
- TG3_FLG2_HW_TSO_1_BUG;
+ tp->tg3_flags2 |= TG3_FLG2_HW_TSO_1 | TG3_FLG2_TSO_BUG;
if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
ASIC_REV_5750 &&
tp->pci_chip_rev_id >= CHIPREV_ID_5750_C2)
- tp->tg3_flags2 &= ~TG3_FLG2_HW_TSO_1_BUG;
+ tp->tg3_flags2 &= ~TG3_FLG2_TSO_BUG;
}
}
@@ -11867,7 +11869,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
(tp->tg3_flags & TG3_FLAG_ENABLE_ASF) != 0) {
tp->tg3_flags2 &= ~TG3_FLG2_TSO_CAPABLE;
} else {
- tp->tg3_flags2 |= TG3_FLG2_TSO_CAPABLE;
+ tp->tg3_flags2 |= TG3_FLG2_TSO_CAPABLE | TG3_FLG2_TSO_BUG;
}
/* TSO is on by default on chips that support hardware TSO.
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 45d477e..086892d 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2227,7 +2227,7 @@ struct tg3 {
#define TG3_FLAG_INIT_COMPLETE 0x80000000
u32 tg3_flags2;
#define TG3_FLG2_RESTART_TIMER 0x00000001
-#define TG3_FLG2_HW_TSO_1_BUG 0x00000002
+#define TG3_FLG2_TSO_BUG 0x00000002
#define TG3_FLG2_NO_ETH_WIRE_SPEED 0x00000004
#define TG3_FLG2_IS_5788 0x00000008
#define TG3_FLG2_MAX_RXPEND_64 0x00000010
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