linux/tools
Eric Dumazet aacb0c2e52 selftests: net: tcp_mmap must use TCP_ZEROCOPY_RECEIVE
After prior kernel change, mmap() on TCP socket only reserves VMA.

We have to use getsockopt(fd, IPPROTO_TCP, TCP_ZEROCOPY_RECEIVE, ...)
to perform the transfert of pages from skbs in TCP receive queue into such VMA.

struct tcp_zerocopy_receive {
	__u64 address;		/* in: address of mapping */
	__u32 length;		/* in/out: number of bytes to map/mapped */
	__u32 recv_skip_hint;	/* out: amount of bytes to skip */
};

After a successful getsockopt(...TCP_ZEROCOPY_RECEIVE...), @length contains
number of bytes that were mapped, and @recv_skip_hint contains number of bytes
that should be read using conventional read()/recv()/recvmsg() system calls,
to skip a sequence of bytes that can not be mapped, because not properly page
aligned.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-29 21:29:55 -04:00
..
accounting License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
arch tools/headers: Synchronize kernel ABI headers, v4.17-rc1 2018-04-17 09:47:39 -03:00
bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-04-26 21:19:50 -04:00
build Kbuild: fix # escaping in .cmd files for future Make 2018-04-11 00:03:02 +09:00
cgroup tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
firewire License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gpio Linux 4.16-rc5 2018-03-18 17:48:59 +01:00
hv tools: hv: include string.h in hv_fcopy_daemon 2018-03-06 09:57:16 -08:00
iio tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
include Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-04-26 21:19:50 -04:00
kvm/kvm_stat tools/kvm_stat: Remove unused function 2018-03-28 22:47:06 +02:00
laptop tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
leds tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-04-26 21:19:50 -04:00
memory-model tools/memory-model: Finish the removal of rb-dep, smp_read_barrier_depends(), and lockless_dereference() 2018-03-10 10:22:23 +01:00
nfsd License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
objtool objtool: Support HOSTCFLAGS and HOSTLDFLAGS 2018-04-17 07:59:42 +02:00
pci License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcmcia License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf coresight: Move to SPDX identifier 2018-04-19 12:29:41 -03:00
power Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
scripts Kbuild: fix # escaping in .cmd files for future Make 2018-04-11 00:03:02 +09:00
spi tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
testing selftests: net: tcp_mmap must use TCP_ZEROCOPY_RECEIVE 2018-04-29 21:29:55 -04:00
thermal/tmon tools/thermal: tmon: fix for segfault 2018-03-27 09:51:23 +02:00
time
usb usbip: tools: usbipd: exclude exported devices from exportable device list 2018-03-22 13:08:20 +01:00
virtio ptr_ring: fix build 2018-03-20 03:17:37 +02:00
vm tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
wmi tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
Makefile platform-drivers-x86 for v4.15-1 2017-11-18 10:26:57 -08:00