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Filename Latest commit message Latest commit date
Daniel Borkmann 1812291e76 bpf: more msg_name rewrite tests to test_sock_addr
Extend test_sock_addr for recvmsg test cases, bigger parts of the
sendmsg code can be reused for this. Below are the strace view of
the recvmsg rewrites; the sendmsg side does not have a BPF prog
connected to it for the context of this test:

IPv4 test case:

  [pid  4846] bpf(BPF_PROG_ATTACH, {target_fd=3, attach_bpf_fd=4, attach_type=0x13 /* BPF_??? */, attach_flags=BPF_F_ALLOW_OVERRIDE}, 112) = 0
  [pid  4846] socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 5
  [pid  4846] bind(5, {sa_family=AF_INET, sin_port=htons(4444), sin_addr=inet_addr("127.0.0.1")}, 128) = 0
  [pid  4846] socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 6
  [pid  4846] sendmsg(6, {msg_name={sa_family=AF_INET, sin_port=htons(4444), sin_addr=inet_addr("127.0.0.1")}, msg_namelen=128, msg_iov=[{iov_base="a", iov_len=1}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 1
  [pid  4846] select(6, [5], NULL, NULL, {tv_sec=2, tv_usec=0}) = 1 (in [5], left {tv_sec=1, tv_usec=999995})
  [pid  4846] recvmsg(5, {msg_name={sa_family=AF_INET, sin_port=htons(4040), sin_addr=inet_addr("192.168.1.254")}, msg_namelen=128->16, msg_iov=[{iov_base="a", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 1
  [pid  4846] close(6)                    = 0
  [pid  4846] close(5)                    = 0
  [pid  4846] bpf(BPF_PROG_DETACH, {target_fd=3, attach_type=0x13 /* BPF_??? */}, 112) = 0

IPv6 test case:

  [pid  4846] bpf(BPF_PROG_ATTACH, {target_fd=3, attach_bpf_fd=4, attach_type=0x14 /* BPF_??? */, attach_flags=BPF_F_ALLOW_OVERRIDE}, 112) = 0
  [pid  4846] socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 5
  [pid  4846] bind(5, {sa_family=AF_INET6, sin6_port=htons(6666), inet_pton(AF_INET6, "::1", &sin6_addr), sin6_flowinfo=htonl(0), sin6_scope_id=0}, 128) = 0
  [pid  4846] socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 6
  [pid  4846] sendmsg(6, {msg_name={sa_family=AF_INET6, sin6_port=htons(6666), inet_pton(AF_INET6, "::1", &sin6_addr), sin6_flowinfo=htonl(0), sin6_scope_id=0}, msg_namelen=128, msg_iov=[{iov_base="a", iov_len=1}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 1
  [pid  4846] select(6, [5], NULL, NULL, {tv_sec=2, tv_usec=0}) = 1 (in [5], left {tv_sec=1, tv_usec=999996})
  [pid  4846] recvmsg(5, {msg_name={sa_family=AF_INET6, sin6_port=htons(6060), inet_pton(AF_INET6, "face:b00c:1234:5678::abcd", &sin6_addr), sin6_flowinfo=htonl(0), sin6_scope_id=0}, msg_namelen=128->28, msg_iov=[{iov_base="a", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 1
  [pid  4846] close(6)                    = 0
  [pid  4846] close(5)                    = 0
  [pid  4846] bpf(BPF_PROG_DETACH, {target_fd=3, attach_type=0x14 /* BPF_??? */}, 112) = 0

test_sock_addr run w/o strace view:

  # ./test_sock_addr.sh
  [...]
  Test case: recvmsg4: return code ok .. [PASS]
  Test case: recvmsg4: return code !ok .. [PASS]
  Test case: recvmsg6: return code ok .. [PASS]
  Test case: recvmsg6: return code !ok .. [PASS]
  Test case: recvmsg4: rewrite IP & port (asm) .. [PASS]
  Test case: recvmsg6: rewrite IP & port (asm) .. [PASS]
  [...]

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrey Ignatov <rdna@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-06-06 16:53:12 -07:00
arch bpf, riscv: clear high 32 bits for ALU32 add/sub/neg/lsh/rsh/arsh 2019-05-31 17:08:53 -07:00
block for-5.2/block-post-20190516 2019-05-16 19:08:15 -07:00
certs
crypto
Documentation Documentation/networking: fix af_xdp.rst Sphinx warnings 2019-05-21 16:19:49 +02:00
drivers net: stmmac: dma channel control register need to be init first 2019-05-20 20:55:39 -04:00
fs for-5.2-rc1-tag 2019-05-20 09:52:35 -07:00
include bpf: fix unconnected udp hooks 2019-06-06 16:53:12 -07:00
init initramfs: don't free a non-existent initrd 2019-05-18 15:52:26 -07:00
ipc ipc: do cyclic id allocation for the ipc object. 2019-05-14 19:52:52 -07:00
kernel bpf: fix unconnected udp hooks 2019-06-06 16:53:12 -07:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-20 08:21:07 -07:00
LICENSES
mm Merge branch 'akpm' (patches from Andrew) 2019-05-19 12:15:32 -07:00
net bpf: fix unconnected udp hooks 2019-06-06 16:53:12 -07:00
samples samples, bpf: suppress compiler warning 2019-05-21 16:55:20 +02:00
scripts kconfig: use 'else ifneq' for Makefile to improve readability 2019-05-19 09:34:35 +09:00
security Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-13 15:15:00 -07:00
sound sound fixes for 5.2-rc1 2019-05-17 13:57:54 -07:00
tools bpf: more msg_name rewrite tests to test_sock_addr 2019-06-06 16:53:12 -07:00
usr
virt * ARM: support for SVE and Pointer Authentication in guests, PMU improvements 2019-05-17 10:33:30 -07:00
.clang-format
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes
.gitignore .gitignore: exclude .get_maintainer.ignore and .gitattributes 2019-05-18 11:49:54 +09:00
.mailmap A reasonably busy cycle for docs, including: 2019-05-08 12:42:50 -07:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-05-20 08:21:07 -07:00
Makefile Linux 5.2-rc1 2019-05-19 15:47:09 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.