diff options
| author | Matt Carlson | 2007-05-05 11:50:04 -0700 |
|---|---|---|
| committer | David S. Miller | 2007-05-05 11:50:04 -0700 |
| commit | c13e3713857d5ea572cd67f3d5749100b1963ad2 (patch) | |
| tree | 99484a1ac84b083a58a60e9bcb3dcbeda44a6988 | |
| parent | 64a327a7029d3860ddf6a024816afa9e6673eb57 (diff) | |
[TG3]: Fix TSO bugs.
1. Remove the check for skb->len greater than MTU when doing TSO.
When the destination has a smaller MSS than the source, a TSO packet
may be smaller than the MTU and we still need to process it as a TSO
packet.
2. On 5705A3 devices with TSO enabled, the DMA engine can hang due to a
hardware bug. This patch avoids the hanging condition by reducing the
DMA burst size.
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>
| -rw-r--r-- | drivers/net/tg3.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 9488f49ea569..b8141be56d74 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -3895,8 +3895,7 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev) entry = tp->tx_prod; base_flags = 0; mss = 0; - if (skb->len > (tp->dev->mtu + ETH_HLEN) && - (mss = skb_shinfo(skb)->gso_size) != 0) { + if ((mss = skb_shinfo(skb)->gso_size) != 0) { int tcp_opt_len, ip_tcp_len; if (skb_header_cloned(skb) && @@ -4053,8 +4052,7 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev) if (skb->ip_summed == CHECKSUM_PARTIAL) base_flags |= TXD_FLAG_TCPUDP_CSUM; mss = 0; - if (skb->len > (tp->dev->mtu + ETH_HLEN) && - (mss = skb_shinfo(skb)->gso_size) != 0) { + if ((mss = skb_shinfo(skb)->gso_size) != 0) { struct iphdr *iph; int tcp_opt_len, ip_tcp_len, hdr_len; @@ -6346,8 +6344,7 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) tp->pci_chip_rev_id != CHIPREV_ID_5705_A0) || (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750)) { if (tp->tg3_flags2 & TG3_FLG2_TSO_CAPABLE && - (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 || - tp->pci_chip_rev_id == CHIPREV_ID_5705_A2)) { + GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) { rdmac_mode |= RDMAC_MODE_FIFO_SIZE_128; } else if (!(tr32(TG3PCI_PCISTATE) & PCISTATE_BUS_SPEED_HIGH) && !(tp->tg3_flags2 & TG3_FLG2_IS_5788)) { |