Messages in this thread | | | Date | Wed, 21 Mar 2007 15:59:28 +0800 | From | Miao Qingjun <> | Subject | tpacket_rcv |
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Hi,
Can anybody explain what the following code does and why needs it??
Thanks
tpacket_rcv() { .... h->tp_status = status; smp_mb();
{ struct page *p_start, *p_end; u8 *h_end = (u8 *)h + macoff + snaplen - 1;
p_start = virt_to_page(h); p_end = virt_to_page(h_end); while (p_start <= p_end) { flush_dcache_page(p_start); p_start++; } }
sk->sk_data_ready(sk, 0); ... }
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