[Devel] [PATCH rh7 11/11] net: don't bother calling list RX functions on empty lists

From: Edward Cree Generally the check should be very cheap, as the sk_buff_head is in cache. Signed-off-by: Edward Cree Signed-off-by: David S. Miller https://jira.sw.ru/browse/PSBM-88420 (cherry picked from commit b9f463d6c9849230043123a6335d59ac7fea4d5a) Signed-off-by: Andrey Ryabinin ---

[Devel] [PATCH rh7 01/11] mm: introduce memalloc_noreclaim_{save, restore}

From: Vlastimil Babka The previous patch ("mm: prevent potential recursive reclaim due to clearing PF_MEMALLOC") has shown that simply setting and clearing PF_MEMALLOC in current->flags can result in wrongly clearing a pre-existing PF_MEMALLOC flag and potentially lead to recursive reclaim. Let's

[Devel] [PATCH rh7 07/11] net: core: another layer of lists, around PF_MEMALLOC skb handling

From: Edward Cree First example of a layer splitting the list (rather than merely taking individual packets off it). Involves new list.h function, list_cut_before(), like list_cut_position() but cuts on the other side of the given entry. Signed-off-by: Edward Cree Signed-off-by: David S. Mill

[Devel] [PATCH rh7 04/11] sfc: batch up RX delivery

From: Edward Cree Improves packet rate of 1-byte UDP receives by up to 10%. Signed-off-by: Edward Cree Signed-off-by: David S. Miller https://jira.sw.ru/browse/PSBM-88420 (cherry picked from commit e090bfb9f19259b958387d2bd4938d66b324cd09) Signed-off-by: Andrey Ryabinin --- drivers/net/ethe

[Devel] [PATCH rh7 08/11] net: core: propagate SKB lists through packet_type lookup

From: Edward Cree __netif_receive_skb_core() does a depressingly large amount of per-packet work that can't easily be listified, because the another_round looping makes it nontrivial to slice up into smaller functions. Fortunately, most of that work disappears in the fast path: * Hardware devi

[Devel] [PATCH rh7 09/11] net: ipv4: listified version of ip_rcv

From: Edward Cree Also involved adding a way to run a netfilter hook over a list of packets. Rather than attempting to make netfilter know about lists (which would be a major project in itself) we just let it call the regular okfn (in this case ip_rcv_finish()) for any packets it steals, and h

[Devel] [PATCH rh7 03/11] net: core: trivial netif_receive_skb_list() entry point

From: Edward Cree Just calls netif_receive_skb() in a loop. Signed-off-by: Edward Cree Signed-off-by: David S. Miller https://jira.sw.ru/browse/PSBM-88420 (cherry picked from commit f6ad8c1bcdf014272d08c55b9469536952a0a771) Signed-off-by: Andrey Ryabinin --- include/linux/netdevice.h | 1 +

[Devel] [PATCH rh7 10/11] net: ipv4: listify ip_rcv_finish

From: Edward Cree ip_rcv_finish_core(), if it does not drop, sets skb->dst by either early demux or route lookup. The last step, calling dst_input(skb), is left to the caller; in the listified case, we split to form sublists with a common dst, but then ip_sublist_rcv_finish() just calls dst_i

[Devel] [PATCH rh7 06/11] net: core: Another step of skb receive list processing

From: Edward Cree netif_receive_skb_list_internal() now processes a list and hands it on to the next function. Signed-off-by: Edward Cree Signed-off-by: David S. Miller https://jira.sw.ru/browse/PSBM-88420 (cherry picked from commit 7da517a3bc529dc5399e742688b32cafa2ca5ca0) [ ifdef out if (s

[Devel] [PATCH rh7 05/11] net: core: unwrap skb list receive slightly further

From: Edward Cree Signed-off-by: Edward Cree Signed-off-by: David S. Miller https://jira.sw.ru/browse/PSBM-88420 (cherry picked from commit 920572b73280a29e3a9f58807a8b90051b19ee60) Signed-off-by: Andrey Ryabinin --- include/trace/events/net.h | 7 +++ net/core/dev.c | 4 +++-

[Devel] [PATCH rh7 02/11] net/skbuff: Add ->list to struct sk_buff;

->list added into struct sk_buff in upstream by the commit d4546c2509b1 ("net: Convert GRO SKB handling to list_head.") It seems should be fine to backport only addition of the ->list field without the rest of the patch which we don't need. The ->list field needed for backport of 2d1b138505dc ("Ha

[Devel] [PATCH rh7 00/11] Backort of "Handle multiple received packets at each stage"

Backport of 2d1b138505dc29bbd7ac5f82f5a10635ff48bddb ("Handle multiple received packets at each stage") The main differencies from upstream is that our NF_HOOK() doesn't have 'struct net *net' argument, so I simply dropped it. The other thing is that we don't have generic XDP, so the hunk realted