On 11-10-2006 01:26, Ronghua Zhang wrote:
...
The reason I asked this is that I saw the following code in forthdeth
drvier:
#define NV_TX2_TSO_MAX_SHIFT) 14
/* add fragments to entries count */
for (i = 0; i fragments; i++) {
entries += (skb_shinfo(skb)-frags[i].size
From: Ronghua Zhang [EMAIL PROTECTED]
Date: Tue, 10 Oct 2006 15:37:04 -0700
From the code of tcp_sendmsg, it seems to me that each frag is at most
one page. Is it a guaranteed property or the driver should not assume
it? Thanks
This assumption basically already exists everywhere since
all
From the code of tcp_sendmsg, it seems to me that each frag is at most
one page. Is it a guaranteed property or the driver should not assume
it? Thanks
Ronghua
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Thank you for your explanation, David.
But pci_map_page should work fine if we have multiple contiguous pages
in one frag that are allocated using alloc_pages, ie:
frag-page = alloc_pages(GFP_KERNEL, 2); // get 4 pages
frag-page_offset = 0;
frag-size = 4 * PAGE_SIZE;
dma_addr =
From: Ronghua Zhang [EMAIL PROTECTED]
Date: Tue, 10 Oct 2006 16:26:58 -0700
Thank you for your explanation, David.
But pci_map_page should work fine if we have multiple contiguous pages
in one frag that are allocated using alloc_pages, ie:
frag-page = alloc_pages(GFP_KERNEL, 2); // get
