From a9ebadd640927ac6529d904b4131b17e8019d199 Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Wed, 1 Nov 2006 08:47:53 -0800 Subject: [PATCH] e1000: Remove unneeded and unwanted memsets This memsetting was added in a paranoid rage debugging TX hangs, but are no longer of importance. We can beef up the performance quite a bit removing them. Make sure to fill in next_to_watch to allow this. Signed-off-by: Auke Kok Signed-off-by: Jesse Brandeburg --- drivers/net/e1000/e1000_main.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 44ba52229c7..9d82bbb1a82 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -1993,10 +1993,13 @@ e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, buffer_info->dma, buffer_info->length, PCI_DMA_TODEVICE); + buffer_info->dma = 0; } - if (buffer_info->skb) + if (buffer_info->skb) { dev_kfree_skb_any(buffer_info->skb); - memset(buffer_info, 0, sizeof(struct e1000_buffer)); + buffer_info->skb = NULL; + } + /* buffer_info must be completely set up in the transmit path */ } /** @@ -2661,6 +2664,7 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, context_desc->cmd_and_length = cpu_to_le32(cmd_length); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; if (++i == tx_ring->count) i = 0; tx_ring->next_to_use = i; @@ -2695,6 +2699,7 @@ e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; if (unlikely(++i == tx_ring->count)) i = 0; tx_ring->next_to_use = i; @@ -2763,6 +2768,7 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, size, PCI_DMA_TODEVICE); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; len -= size; offset += size; @@ -2802,6 +2808,7 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, size, PCI_DMA_TODEVICE); buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; len -= size; offset += size; @@ -3620,7 +3627,7 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter, cleaned = (i == eop); e1000_unmap_and_free_tx_resource(adapter, buffer_info); - memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); + tx_desc->upper.data = 0; if (unlikely(++i == tx_ring->count)) i = 0; } -- 2.41.1