On Thu, Feb 10, 2022 at 8:13 AM Jakub Kicinski <kuba@xxxxxxxxxx> wrote: > > On Thu, 10 Feb 2022 21:42:14 +0800 Menglong Dong wrote: > > How about introducing a field to 'struct sock' for drop reasons? As sk is > > locked during the packet process in tcp_v4_do_rcv(), this seems to work. > > I find adding temporary storage to persistent data structures awkward. > You can put a structure on the stack and pass it thru the call chain, > that's just my subjective preference, tho, others may have better ideas. I had a similar TODO item, because stuff like 'waking up task' or free one skb (or list of skb) could be performed outside of socket lock.
