Re: skb_split in tcp_retransmit_skb question

On (01/27/11 17:20), Sergey Senozhatsky wrote:

Hello,

Suppose we have the following scenario:

tcp_write_timer ->
 tcp_retransmit_skb

in tcp_retransmit_skb we have `if (skb->len > cur_mss)' evaluted to true, which leads
to tcp_fragment(sk, skb, cur_mss, cur_mss) call. tcp_fragment calls skb_split(skb, buff, len)
which, in turn, calls skb_split_no_header(skb, skb1, len, pos), where we have
`skb_shinfo(skb)->nr_frags++' while in `for (i = 0; i < nfrags; i++)' loop.

Sorry for the noise. Alexey has pointed out that we have 
skb_shinfo(skb)->nr_frags = 0 in skb_split_no_header. Have no idea how did I miss it. 

Thanks,

	Sergey