Daniel Borkmann b1d9fc41aa bpf: add napi_id read access to __sk_buff ... Add napi_id access to __sk_buff for socket filter program types, tc program types and other bpf_convert_ctx_access() users. Having access to skb->napi_id is useful for per RX queue listener siloing, f.e. in combination with SO_ATTACH_REUSEPORT_EBPF and when busy polling is used, meaning SO_REUSEPORT enabled listeners can then select the corresponding socket at SYN time already [1]. The skb is marked via skb_mark_napi_id() early in the receive path (e.g., napi_gro_receive()). Currently, sockets can only use SO_INCOMING_NAPI_ID from 6d4339028b ("net: Introduce SO_INCOMING_NAPI_ID") as a socket option to look up the NAPI ID associated with the queue for steering, which requires a prior sk_mark_napi_id() after the socket was looked up. Semantics for the __sk_buff napi_id access are similar, meaning if skb->napi_id is < MIN_NAPI_ID (e.g. outgoing packets using sender_cpu), then an invalid napi_id of 0 is returned to the program, otherwise a valid non-zero napi_id. [1] http://netdevconf.org/2.1/slides/apr6/dumazet-BUSY-POLLING-Netdev-2.1.pdf Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-04-21 13:53:27 -04:00
..
asm-generic	New getsockopt option to get socket cookie	2017-04-08 08:07:01 -07:00
drm	uapi: fix drm/omap_drm.h userspace compilation errors	2017-03-13 12:53:27 +02:00
linux	bpf: add napi_id read access to __sk_buff	2017-04-21 13:53:27 -04:00
misc
mtd
rdma	uapi: fix rdma/mlx5-abi.h userspace compilation errors	2017-03-24 22:01:35 -04:00
scsi	scsi: cxlflash: Support SQ Command Mode	2017-01-11 22:38:15 -05:00
sound	Merge remote-tracking branches 'asoc/topic/tlv320aic31xx', 'asoc/topic/topology', 'asoc/topic/uda1380', 'asoc/topic/wm2200' and 'asoc/topic/wm8523' into asoc-next	2016-12-12 15:53:25 +00:00
video
xen	xen/privcmd: add IOCTL_PRIVCMD_RESTRICT	2017-02-14 15:14:59 -05:00
Kbuild