[PATCH net-next 1/6] tg3: Raise the jumbo frame BD flag threshold
From: Matt Carlson <hidden>
Date: 2010-12-06 18:29:16
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The current transmit routines set the jumbo frame BD flag too aggressively. This can reduce performance for common cases. This patch raises the jumbo flag threshold to 1518, up from 1500. Signed-off-by: Matt Carlson <redacted> Reviewed-by: Benjamin Li <redacted> --- drivers/net/tg3.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index afb79db..b8ae5e1 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c@@ -5761,7 +5761,7 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, dma_unmap_addr_set(&tnapi->tx_buffers[entry], mapping, mapping); if ((tp->tg3_flags3 & TG3_FLG3_USE_JUMBO_BDFLAG) && - !mss && skb->len > ETH_DATA_LEN) + !mss && skb->len > VLAN_ETH_FRAME_LEN) base_flags |= TXD_FLAG_JMB_PKT; tg3_set_txd(tnapi, entry, mapping, len, base_flags,
@@ -5995,7 +5995,7 @@ static netdev_tx_t tg3_start_xmit_dma_bug(struct sk_buff *skb, #endif if ((tp->tg3_flags3 & TG3_FLG3_USE_JUMBO_BDFLAG) && - !mss && skb->len > ETH_DATA_LEN) + !mss && skb->len > VLAN_ETH_FRAME_LEN) base_flags |= TXD_FLAG_JMB_PKT; len = skb_headlen(skb);
--
1.7.2.2