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
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acpi
asm-generic	vmlinux.lds: add missing VMLINUX_SYMBOL macros	2017-04-08 00:47:48 -07:00
clocksource
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2017-04-18 09:03:50 -07:00
drm	drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces	2017-03-30 11:43:39 +02:00
dt-bindings	scripts/spelling.txt: add "overide" pattern and fix typo instances	2017-03-09 17:01:09 -08:00
keys
kvm	KVM: arm64: Ensure LRs are clear when they should be	2017-04-04 14:33:58 +02:00
linux	Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning	2017-04-21 13:22:34 -04:00
math-emu
media
memory
misc
net	ip_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:31 -04:00
pcmcia
ras
rdma	IB/core: Restore I/O MMU, s390 and powerpc support	2017-03-24 21:51:16 -04:00
rxrpc
scsi
soc
sound
target	target: Fix ALUA transition state race between multiple initiators	2017-03-30 23:12:40 -07:00
trace	rxrpc: Trace client call connection	2017-04-06 11:10:41 +01:00
uapi	bpf: add napi_id read access to __sk_buff	2017-04-21 13:53:27 -04:00
video	drm/exynos/decon5433: signal frame done interrupt at front porch	2017-03-21 13:17:22 +09:00
xen
Kbuild