From 7acedaf5c4355f812cfef883ac28bf15f7d9205e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 25 Apr 2017 11:36:52 -0700 Subject: [PATCH] net: move xdp_prog field in RX cache lines (struct net_device, xdp_prog) field should be moved in RX cache lines, reducing latencies when a single packet is received on idle host, since netif_elide_gro() needs it. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 46d220c2bf92..8c5c8cdc7b97 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1790,6 +1790,7 @@ struct net_device { unsigned int real_num_rx_queues; #endif + struct bpf_prog __rcu *xdp_prog; unsigned long gro_flush_timeout; rx_handler_func_t __rcu *rx_handler; void __rcu *rx_handler_data; @@ -1905,7 +1906,6 @@ struct net_device { struct lock_class_key *qdisc_tx_busylock; struct lock_class_key *qdisc_running_key; bool proto_down; - struct bpf_prog __rcu *xdp_prog; }; #define to_net_dev(d) container_of(d, struct net_device, dev) -- 2.20.1