On Jan 4, 2008 11:19 AM, Tomasz Grobelny <tomasz@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > I think I almost got it. Thanks a lot for the detailed explanation. But I've > got two more questions: > 1. How can I control the amount of "memory allowed to be allocated for the > socket send buffer"? It it somehow connected with tx_qlen or is it not? I wrote the code here so let me comment - there is no fixed amount of memory allocated - it is determined by the tx_qlen. I was looking at implementing memory limits but it got too hard and as DCCP doesn't combine packets I thought it made it much simpler just to put a limit by packets. > 2. If I decide that for whatever reason a given skb already in sk_write_queue > should not be transmitted I should remove it from queue and call kfree_skb on > it, it that right? Correct. Remember of course all your locking mechanisms. If you want a good example look at the below towards the end: http://wand.net.nz/~iam4/dccp/patches20/30-best_packet_next.diff (NB this patch applies against 2.6.20 after previous patches in series). Regards, Ian -- Web1: http://wand.net.nz/~iam4/ Web2: http://www.jandi.co.nz - To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
