John Fastabend 34f79502bb bpf: avoid preempt enable/disable in sockmap using tcp_skb_cb region ... SK_SKB BPF programs are run from the socket/tcp context but early in the stack before much of the TCP metadata is needed in tcp_skb_cb. So we can use some unused fields to place BPF metadata needed for SK_SKB programs when implementing the redirect function. This allows us to drop the preempt disable logic. It does however require an API change so sk_redirect_map() has been updated to additionally provide ctx_ptr to skb. Note, we do however continue to disable/enable preemption around actual BPF program running to account for map updates. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-10-20 13:01:29 +01:00
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auxdisplay
blackfin
bpf	bpf: Add lru_hash_lookup performance test	2017-09-01 09:57:38 -07:00
configfs
connector
hidraw
hw_breakpoint
kdb
kfifo	kfifo: clean up example to not use page_link	2017-07-12 16:26:01 -07:00
kobject
kprobes
livepatch
mei
mic/mpssd
pktgen	pktgen: Specify the index of first thread	2017-06-16 12:32:34 -04:00
rpmsg
seccomp
sockmap	bpf: avoid preempt enable/disable in sockmap using tcp_skb_cb region	2017-10-20 13:01:29 +01:00
statx
timers
trace_events
trace_printk
uhid
v4l	media: v4l2-pci-skeleton: constify vb2_ops structures	2017-08-20 08:03:09 -04:00
vfio-mdev
watchdog
Kconfig
Makefile