On Wed, Mar 30, 2011 at 10:42 PM, sk.syed2 <sk.syed2@xxxxxxxxx> wrote:
> struct page *page = virt_to_page(skb->data);This will work if skb->len < PAGE_SIZE, otherwise it means it spans
> int offset = (unsigned long) skb->data - (unsigned long) page_address(page);
> skb_add_rx_frag(master_skb, skb_shinfo(master_skb)->nr_frags, page, offset,
> skb->len)
> .
> .
> is this the right way to do ?
more than a page and you need to do skb_add_rx_frag for each PAGE_SIZE
data present. Refer to Understanding Linux network internals By
Christian Benvenuti p 488/489.
Thanks Syed, skb->len is always smaller then PAGE_SIZE because i have set the mtu size as 1500 from my network driver.
But am facing kernel panic, if i just the moment the driver call dev_queue_xmit, so i guess this may not be right way to get
the page.
Anyways thanks for the support.
_______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
