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linux-next/include
Jesper Dangaard Brouer 1c601d829a bpf: cpumap xdp_buff to skb conversion and allocation
This patch makes cpumap functional, by adding SKB allocation and
invoking the network stack on the dequeuing CPU.

For constructing the SKB on the remote CPU, the xdp_buff in converted
into a struct xdp_pkt, and it mapped into the top headroom of the
packet, to avoid allocating separate mem.  For now, struct xdp_pkt is
just a cpumap internal data structure, with info carried between
enqueue to dequeue.

If a driver doesn't have enough headroom it is simply dropped, with
return code -EOVERFLOW.  This will be picked up the xdp tracepoint
infrastructure, to allow users to catch this.

V2: take into account xdp->data_meta

V4:
 - Drop busypoll tricks, keeping it more simple.
 - Skip RPS and Generic-XDP-recursive-reinjection, suggested by Alexei

V5: correct RCU read protection around __netif_receive_skb_core.

V6: Setting TASK_RUNNING vs TASK_INTERRUPTIBLE based on talk with Rik van Riel

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-18 12:12:18 +01:00
..
acpi ACPI / bus: Make ACPI_HANDLE() work for non-GPL code again 2017-09-19 22:42:31 +02:00
asm-generic percpu: make this_cpu_generic_read() atomic w.r.t. interrupts 2017-09-26 07:37:33 -07:00
clocksource
crypto
drm lib/interval_tree: fast overlap detection 2017-09-08 18:26:49 -07:00
dt-bindings ARC: reset: remove the misleading v1 suffix all over 2017-09-18 13:02:03 +02:00
keys
kvm
linux bpf: cpumap xdp_buff to skb conversion and allocation 2017-10-18 12:12:18 +01:00
math-emu
media media updates for v4.14-rc1 2017-09-07 12:53:14 -07:00
memory
misc
net ipv6: only update __use and lastusetime once per jiffy at most 2017-10-16 21:08:30 +01:00
pcmcia
ras
rdma IB: Correct MR length field to be 64-bit 2017-09-25 11:47:23 -04:00
scsi scsi: libiscsi: Remove iscsi_destroy_session 2017-10-02 22:23:21 -04:00
soc ARM: SoC driver updates for v4.14 2017-09-10 20:40:00 -07:00
sound sound fixes for 4.14-rc4 2017-10-05 10:39:29 -07:00
target
trace bpf: XDP_REDIRECT enable use of cpumap 2017-10-18 12:12:18 +01:00
uapi bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP 2017-10-18 12:12:18 +01:00
video
xen xen, arm64: drop dummy lookup_address() 2017-09-19 09:25:05 -04:00