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mptcp: Add MPTCP socket stubs Implements the infrastructure for MPTCP sockets. MPTCP sockets open one in-kernel TCP socket per subflow. These subflow sockets are only managed by the MPTCP socket that owns them and are not visible from userspace. This commit allows a userspace program to open an MPTCP socket with: sock = socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP); The resulting socket is simply a wrapper around a single regular TCP socket, without any of the MPTCP protocol implemented over the wire. Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-22 08:56:15 +08:00
config MPTCP
bool "MPTCP: Multipath TCP"
depends on INET
select SKB_EXTENSIONS
mptcp: move from sha1 (v0) to sha256 (v1) For simplicity's sake use directly sha256 primitives (and pull them as a required build dep). Add optional, boot-time self-tests for the hmac function. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-22 08:56:30 +08:00
select CRYPTO_LIB_SHA256
mptcp: select CRYPTO Without this modification and if CRYPTO is not selected, we have this warning: WARNING: unmet direct dependencies detected for CRYPTO_LIB_SHA256 Depends on [n]: CRYPTO [=n] Selected by [y]: - MPTCP [=y] && NET [=y] && INET [=y] MPTCP selects CRYPTO_LIB_SHA256 which seems to depend on CRYPTO. CRYPTO is now selected to avoid this issue. Even though the config system prints that warning, it looks like sha256.c is compiled and linked even without CONFIG_CRYPTO. Since MPTCP will end up needing CONFIG_CRYPTO anyway in future commits -- currently in preparation for net-next -- we propose to add it now to fix the warning. The dependency in the config system comes from the fact that CRYPTO_LIB_SHA256 is defined in "lib/crypto/Kconfig" which is sourced from "crypto/Kconfig" only if CRYPTO is selected. Fixes: 65492c5a6ab5 (mptcp: move from sha1 (v0) to sha256 (v1)) Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-15 22:45:56 +08:00
select CRYPTO
mptcp: Add MPTCP socket stubs Implements the infrastructure for MPTCP sockets. MPTCP sockets open one in-kernel TCP socket per subflow. These subflow sockets are only managed by the MPTCP socket that owns them and are not visible from userspace. This commit allows a userspace program to open an MPTCP socket with: sock = socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP); The resulting socket is simply a wrapper around a single regular TCP socket, without any of the MPTCP protocol implemented over the wire. Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-22 08:56:15 +08:00
help
Multipath TCP (MPTCP) connections send and receive data over multiple
subflows in order to utilize multiple network paths. Each subflow
uses the TCP protocol, and TCP options carry header information for
MPTCP.
mptcp: MPTCP_HMAC_TEST should depend on MPTCP As the MPTCP HMAC test is integrated into the MPTCP code, it can be built only when MPTCP is enabled. Hence when MPTCP is disabled, asking the user if the test code should be enabled is futile. Wrap the whole block of MPTCP-specific config options inside a check for MPTCP. While at it, drop the "default n" for MPTCP_HMAC_TEST, as that is the default anyway. Fixes: 65492c5a6ab5df50 ("mptcp: move from sha1 (v0) to sha256 (v1)") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30 02:02:24 +08:00
if MPTCP
mptcp: Add MPTCP socket stubs Implements the infrastructure for MPTCP sockets. MPTCP sockets open one in-kernel TCP socket per subflow. These subflow sockets are only managed by the MPTCP socket that owns them and are not visible from userspace. This commit allows a userspace program to open an MPTCP socket with: sock = socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP); The resulting socket is simply a wrapper around a single regular TCP socket, without any of the MPTCP protocol implemented over the wire. Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-22 08:56:15 +08:00
config MPTCP_IPV6
bool "MPTCP: IPv6 support for Multipath TCP"
select IPV6
default y
mptcp: move from sha1 (v0) to sha256 (v1) For simplicity's sake use directly sha256 primitives (and pull them as a required build dep). Add optional, boot-time self-tests for the hmac function. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-22 08:56:30 +08:00
config MPTCP_HMAC_TEST
bool "Tests for MPTCP HMAC implementation"
help
This option enable boot time self-test for the HMAC implementation
used by the MPTCP code
Say N if you are unsure.
mptcp: MPTCP_HMAC_TEST should depend on MPTCP As the MPTCP HMAC test is integrated into the MPTCP code, it can be built only when MPTCP is enabled. Hence when MPTCP is disabled, asking the user if the test code should be enabled is futile. Wrap the whole block of MPTCP-specific config options inside a check for MPTCP. While at it, drop the "default n" for MPTCP_HMAC_TEST, as that is the default anyway. Fixes: 65492c5a6ab5df50 ("mptcp: move from sha1 (v0) to sha256 (v1)") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-30 02:02:24 +08:00
endif