summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2020-01-24mptcp: parse and emit MP_CAPABLE option according to v1 specChristoph Paasch
This implements MP_CAPABLE options parsing and writing according to RFC 6824 bis / RFC 8684: MPTCP v1. Local key is sent on syn/ack, and both keys are sent on 3rd ack. MP_CAPABLE messages len are updated accordingly. We need the skbuff to correctly emit the above, so we push the skbuff struct as an argument all the way from tcp code to the relevant mptcp callbacks. When processing incoming MP_CAPABLE + data, build a full blown DSS-like map info, to simplify later processing. On child socket creation, we need to record the remote key, if available. Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: move from sha1 (v0) to sha256 (v1)Paolo Abeni
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>
2020-01-24mptcp: add basic kselftest for mptcpFlorian Westphal
Add mptcp_connect tool: xmit two files back and forth between two processes, several net namespaces including some adding delays, losses and reordering. Wrapper script tests that data was transmitted without corruption. The "-c" command line option for mptcp_connect.sh is there for debugging: The script will use tcpdump to create one .pcap file per test case, named according to the namespaces, protocols, and connect address in use. For example, the first test case writes the capture to ns1-ns1-MPTCP-MPTCP-10.0.1.1.pcap. The stderr output from tcpdump is printed after the test completes to show tcpdump's "packets dropped by kernel" information. Also check that userspace can't create MPTCP sockets when mptcp.enabled sysctl is off. The "-b" option allows to tune/lower send buffer size. "-m mmap" can be used to test blocking io. Default is non-blocking io using read/write/poll. Will run automatically on "make kselftest". Note that the default timeout of 45 seconds is used even if there is a "settings" changing it to 450. 45 seconds should be enough in most cases but this depends on the machine running the tests. A fix to correctly read the "settings" file has been proposed upstream but not applied yet. It is not blocking the execution of these new tests but it would be nice to have it: https://patchwork.kernel.org/patch/11204935/ Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Co-developed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: new sysctl to control the activation per NSMatthieu Baerts
New MPTCP sockets will return -ENOPROTOOPT if MPTCP support is disabled for the current net namespace. We are providing here a way to control access to the feature for those that need to turn it on or off. The value of this new sysctl can be different per namespace. We can then restrict the usage of MPTCP to the selected NS. In case of serious issues with MPTCP, administrators can now easily turn MPTCP off. Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: allow collapsing consecutive sendpages on the same substreamPaolo Abeni
If the current sendmsg() lands on the same subflow we used last, we can try to collapse the data. 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>
2020-01-24mptcp: recvmsg() can drain data from multiple subflowsPaolo Abeni
With the previous patch in place, the msk can detect which subflow has the current map with a simple walk, let's update the main loop to always select the 'current' subflow. The exit conditions now closely mirror tcp_recvmsg() to get expected timeout and signal behavior. Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> 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>
2020-01-24mptcp: add subflow write space signalling and mptcp_pollFlorian Westphal
Add new SEND_SPACE flag to indicate that a subflow has enough space to accept more data for transmission. It gets cleared at the end of mptcp_sendmsg() in case ssk has run below the free watermark. It is (re-set) from the wspace callback. This allows us to use msk->flags to determine the poll mask. Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Implement MPTCP receive pathMat Martineau
Parses incoming DSS options and populates outgoing MPTCP ACK fields. MPTCP fields are parsed from the TCP option header and placed in an skb extension, allowing the upper MPTCP layer to access MPTCP options after the skb has gone through the TCP stack. The subflow implements its own data_ready() ops, which ensures that the pending data is in sequence - according to MPTCP seq number - dropping out-of-seq skbs. The DATA_READY bit flag is set if this is the case. This allows the MPTCP socket layer to determine if more data is available without having to consult the individual subflows. It additionally validates the current mapping and propagates EoF events to the connection socket. Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> 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>
2020-01-24mptcp: Write MPTCP DSS headers to outgoing data packetsMat Martineau
Per-packet metadata required to write the MPTCP DSS option is written to the skb_ext area. One write to the socket may contain more than one packet of data, which is copied to page fragments and mapped in to MPTCP DSS segments with size determined by the available page fragments and the maximum mapping length allowed by the MPTCP specification. If do_tcp_sendpages() splits a DSS segment in to multiple skbs, that's ok - the later skbs can either have duplicated DSS mapping information or none at all, and the receiver can handle that. The current implementation uses the subflow frag cache and tcp sendpages to avoid excessive code duplication. More work is required to ensure that it works correctly under memory pressure and to support MPTCP-level retransmissions. The MPTCP DSS checksum is not yet implemented. Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> 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>
2020-01-24mptcp: Add setsockopt()/getsockopt() socket operationsPeter Krystad
set/getsockopt behaviour with multiple subflows is undefined. Therefore, for now, we return -EOPNOTSUPP unless we're in fallback mode. Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Add shutdown() socket operationPeter Krystad
Call shutdown on all subflows in use on the given socket, or on the fallback socket. Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Add key generation and token treePeter Krystad
Generate the local keys, IDSN, and token when creating a new socket. Introduce the token tree to track all tokens in use using a radix tree with the MPTCP token itself as the index. Override the rebuild_header callback in inet_connection_sock_af_ops for creating the local key on a new outgoing connection. Override the init_req callback of tcp_request_sock_ops for creating the local key on a new incoming connection. Will be used to obtain the MPTCP parent socket to handle incoming joins. Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Create SUBFLOW socket for incoming connectionsPeter Krystad
Add subflow_request_sock type that extends tcp_request_sock and add an is_mptcp flag to tcp_request_sock distinguish them. Override the listen() and accept() methods of the MPTCP socket proto_ops so they may act on the subflow socket. Override the conn_request() and syn_recv_sock() handlers in the inet_connection_sock to handle incoming MPTCP SYNs and the ACK to the response SYN. Add handling in tcp_output.c to add MP_CAPABLE to an outgoing SYN-ACK response for a subflow_request_sock. Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> 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: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Handle MP_CAPABLE options for outgoing connectionsPeter Krystad
Add hooks to tcp_output.c to add MP_CAPABLE to an outgoing SYN request, to capture the MP_CAPABLE in the received SYN-ACK, to add MP_CAPABLE to the final ACK of the three-way handshake. Use the .sk_rx_dst_set() handler in the subflow proto to capture when the responding SYN-ACK is received and notify the MPTCP connection layer. Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Associate MPTCP context with TCP socketPeter Krystad
Use ULP to associate a subflow_context structure with each TCP subflow socket. Creating these sockets requires new bind and connect functions to make sure ULP is set up immediately when the subflow sockets are created. Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Handle MPTCP TCP optionsPeter Krystad
Add hooks to parse and format the MP_CAPABLE option. This option is handled according to MPTCP version 0 (RFC6824). MPTCP version 1 MP_CAPABLE (RFC6824bis/RFC8684) will be added later in coordination with related code changes. Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com> Signed-off-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mptcp: Add MPTCP socket stubsMat Martineau
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>
2020-01-24Merge branch 'net-bridge-add-per-vlan-state-option'David S. Miller
Nikolay Aleksandrov says: ==================== net: bridge: add per-vlan state option This set adds the first per-vlan option - state, which uses the new vlan infrastructure that was recently added. It gives us forwarding control on per-vlan basis. The first 3 patches prepare the vlan code to support option dumping and modification. We still compress vlan ranges which have equal options, each new option will have to add its own equality check to br_vlan_opts_eq(). The vlans are created in forwarding state by default to be backwards compatible and vlan state is considered only when the port state is forwarding (more info in patch 4). I'll send the selftest for the vlan state with the iproute2 patch-set. v2: patch 3: do full (all-vlan) notification only on vlan create/delete, otherwise use the per-vlan notifications only, rework how option change ranges are detected, add more verbose error messages when setting options and add checks if a vlan should be used. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24net: bridge: vlan: add per-vlan stateNikolay Aleksandrov
The first per-vlan option added is state, it is needed for EVPN and for per-vlan STP. The state allows to control the forwarding on per-vlan basis. The vlan state is considered only if the port state is forwarding in order to avoid conflicts and be consistent. br_allowed_egress is called only when the state is forwarding, but the ingress case is a bit more complicated due to the fact that we may have the transition between port:BR_STATE_FORWARDING -> vlan:BR_STATE_LEARNING which should still allow the bridge to learn from the packet after vlan filtering and it will be dropped after that. Also to optimize the pvid state check we keep a copy in the vlan group to avoid one lookup. The state members are modified with *_ONCE() to annotate the lockless access. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24net: bridge: vlan: add basic option setting supportNikolay Aleksandrov
This patch adds support for option modification of single vlans and ranges. It allows to only modify options, i.e. skip create/delete by using the BRIDGE_VLAN_INFO_ONLY_OPTS flag. When working with a range option changes we try to pack the notifications as much as possible. v2: do full port (all vlans) notification only when creating/deleting vlans for compatibility, rework the range detection when changing options, add more verbose extack errors and check if a vlan should be used (br_vlan_should_use checks) Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24net: bridge: vlan: add basic option dumping supportNikolay Aleksandrov
We'll be dumping the options for the whole range if they're equal. The first range vlan will be used to extract the options. The commit doesn't change anything yet it just adds the skeleton for the support. The dump will happen when the first option is added. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24net: bridge: check port state before br_allowed_egressNikolay Aleksandrov
If we make sure that br_allowed_egress is called only when we have BR_STATE_FORWARDING state then we can avoid a test later when we add per-vlan state. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24mmc: core: Default to generic_cmd6_time as timeout in __mmc_switch()Ulf Hansson
All callers of __mmc_switch() should now be specifying a valid timeout for the CMD6 command. However, just to be sure, let's print a warning and default to use the generic_cmd6_time in case the provided timeout_ms argument is zero. In this context, let's also simplify some of the corresponding code and clarify some related comments. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20200122142747.5690-4-ulf.hansson@linaro.org
2020-01-24mmc: block: Use generic_cmd6_time when modifying INAND_CMD38_ARG_EXT_CSDUlf Hansson
The INAND_CMD38_ARG_EXT_CSD is a vendor specific EXT_CSD register, which is used to prepare an erase/trim operation. However, it doesn't make sense to use a timeout of 10 minutes while updating the register, which becomes the case when the timeout_ms argument for mmc_switch() is set to zero. Instead, let's use the generic_cmd6_time, as that seems like a reasonable timeout to use for these cases. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20200122142747.5690-3-ulf.hansson@linaro.org
2020-01-24mmc: core: Specify timeouts for BKOPS and CACHE_FLUSH for eMMCUlf Hansson
The timeout values used while waiting for a CMD6 for BKOPS or a CACHE_FLUSH to complete, are not defined by the eMMC spec. However, a timeout of 10 minutes as is currently being used, is just silly for both of these cases. Instead, let's specify more reasonable timeouts, 120s for BKOPS and 30s for CACHE_FLUSH. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20200122142747.5690-2-ulf.hansson@linaro.org
2020-01-24mmc: sdhci-cadence: remove unneeded 'inline' markerMasahiro Yamada
'static inline' in .c files does not make much sense because functions may or may not be inlined irrespective of the 'inline' marker. It is just a hint. This function is quite small, so very likely to be inlined by the compiler's optimization (-O2 or -Os), but it is up to the compiler after all. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/20200121105858.13325-1-yamada.masahiro@socionext.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-01-24dt-bindings: mmc: rockchip-dw-mshc: add description for rk3308Johan Jonker
The description below is already in use for rk3308.dtsi, but was somehow never added to a document, so add "rockchip,rk3308-dw-mshc", "rockchip,rk3288-dw-mshc" for mmc nodes on a rk3308 platform to rockchip-dw-mshc.yaml. Signed-off-by: Johan Jonker <jbx6244@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200116152230.29831-3-jbx6244@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-01-24dt-bindings: mmc: convert rockchip dw-mshc bindings to yamlJohan Jonker
Current dts files with 'dwmmc' nodes are manually verified. In order to automate this process rockchip-dw-mshc.txt has to be converted to yaml. In the new setup rockchip-dw-mshc.yaml will inherit properties from mmc-controller.yaml and synopsys-dw-mshc-common.yaml. 'dwmmc' will no longer be a valid name for a node and should be changed to 'mmc'. Signed-off-by: Johan Jonker <jbx6244@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200116152230.29831-2-jbx6244@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-01-24dt-bindings: mmc: convert synopsys dw-mshc bindings to yamlJohan Jonker
Current dts files with 'dwmmc' nodes are manually verified. In order to automate this process synopsys-dw-mshc.txt has to be converted to yaml. In the new setup synopsys-dw-mshc.yaml will inherit properties from mmc-controller.yaml and synopsys-dw-mshc-common.yaml. 'dwmmc' will no longer be a valid name for a node and should be changed to 'mmc'. Signed-off-by: Johan Jonker <jbx6244@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200116152230.29831-1-jbx6244@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-01-24mmc: sdhci-msm: Add CQHCI support for sdhci-msmRitesh Harjani
This adds CQHCI support for sdhci-msm platforms. Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/1579194192-7942-3-git-send-email-vbadigan@codeaurora.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-01-24mmc: sdhci: Let a vendor driver supply and update ADMA descriptor sizeVeerabhadrarao Badiganti
Let a vendor driver supply the maximum descriptor size that it can operate on. ADMA descriptor table would be allocated using this supplied size. If any SD Host controller is of version prior to v4.10 spec but supports 16byte descriptor, this change allows them to supply correct descriptor size for ADMA table allocation. Also let a vendor driver update the descriptor size by overriding sdhc_host->desc_size if it has to operates on a different descriptor sizes in different conditions. Suggested-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/1579531122-28341-1-git-send-email-vbadigan@codeaurora.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-01-24Merge branch 'netdev-seq_file-next-functions-should-increase-position-index'David S. Miller
Vasily Averin says: ==================== netdev: seq_file .next functions should increase position index In Aug 2018 NeilBrown noticed commit 1f4aace60b0e ("fs/seq_file.c: simplify seq_file iteration code and interface") "Some ->next functions do not increment *pos when they return NULL... Note that such ->next functions are buggy and should be fixed. A simple demonstration is dd if=/proc/swaps bs=1000 skip=1 Choose any block size larger than the size of /proc/swaps. This will always show the whole last line of /proc/swaps" Described problem is still actual. If you make lseek into middle of last output line following read will output end of last line and whole last line once again. $ dd if=/proc/swaps bs=1 # usual output Filename Type Size Used Priority /dev/dm-0 partition 4194812 97536 -2 104+0 records in 104+0 records out 104 bytes copied $ dd if=/proc/swaps bs=40 skip=1 # last line was generated twice dd: /proc/swaps: cannot skip to specified offset v/dm-0 partition 4194812 97536 -2 /dev/dm-0 partition 4194812 97536 -2 3+1 records in 3+1 records out 131 bytes copied There are lot of other affected files, I've found 30+ including /proc/net/ip_tables_matches and /proc/sysvipc/* This patch-set fixes files related to netdev@ https://bugzilla.kernel.org/show_bug.cgi?id=206283 ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24ipv6_route_seq_next should increase position indexVasily Averin
if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24rt_cpu_seq_next should increase position indexVasily Averin
if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24neigh_stat_seq_next() should increase position indexVasily Averin
if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24vcc_seq_next should increase position indexVasily Averin
if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24l2t_seq_next should increase position indexVasily Averin
if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24seq_tab_next() should increase position indexVasily Averin
if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24bpftool: Print function linkage in BTF dumpAndrii Nakryiko
Add printing out BTF_KIND_FUNC's linkage. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20200124054317.2459436-1-andriin@fb.com
2020-01-24selftests/bpf: Improve bpftool changes detectionAndrii Nakryiko
Detect when bpftool source code changes and trigger rebuild within selftests/bpf Makefile. Also fix few small formatting problems. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20200124054148.2455060-1-andriin@fb.com
2020-01-24selftests/bpf: Initialize duration variable before usingJohn Sperbeck
The 'duration' variable is referenced in the CHECK() macro, and there are some uses of the macro before 'duration' is set. The clang compiler (validly) complains about this. Sample error: .../selftests/bpf/prog_tests/fexit_test.c:23:6: warning: variable 'duration' is uninitialized when used here [-Wuninitialized] if (CHECK(err, "prog_load sched cls", "err %d errno %d\n", err, errno)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .../selftests/bpf/test_progs.h:134:25: note: expanded from macro 'CHECK' if (CHECK(err, "prog_load sched cls", "err %d errno %d\n", err, errno)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _CHECK(condition, tag, duration, format) ^~~~~~~~ Signed-off-by: John Sperbeck <jsperbeck@google.com> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20200123235144.93610-1-sdf@google.com
2020-01-24staging: most: usb: check for NULL deviceChristian Gromm
Check if the dci structer has been allocated before trying to release it. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1579793906-5054-8-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24staging: next: configfs: fix release linkChristian Gromm
The functions link_destroy and link_release are both deleting list items. link_release, however, does not check whether a certain link has already been deleted from the list by function link_destroy. By fixing this this patch prevents a kernel crash when removing the configuration directory of a link that already has been destroyed. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1579793906-5054-7-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24staging: most: core: fix logging messagesChristian Gromm
This patch fixes the module's logging messages. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1579793906-5054-6-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24staging: most: core: remove container structChristian Gromm
This patch declares and initializes the bus, bus driver and the component list without a container struct, as it introduces an unnecessary level of abstraction. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1579793906-5054-5-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24staging: most: remove struct device core driverChristian Gromm
This patch removes the device from the MOST core driver and uses the device from the adapter driver. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1579793906-5054-4-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24staging: most: core: drop device referenceChristian Gromm
This patch drops the device reference added by function bus_find_device_by_name. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1579793906-5054-3-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24staging: most: remove device from interface structureChristian Gromm
This patch makes the adapter drivers use their own device structures when registering a most interface with the core module. With this the module that actually operates the physical device is the owner of the device. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1579793906-5054-2-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24firmware: Rename FW_OPT_NOFALLBACK to FW_OPT_NOFALLBACK_SYSFSHans de Goede
This is a preparation patch for adding a new platform fallback mechanism, which will have its own enable/disable FW_OPT_xxx option. Note this also fixes a typo in one of the re-wordwrapped comments: enfoce -> enforce. Acked-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20200115163554.101315-4-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-24Doc: ABI: add usb charger ueventPeter Chen
When the USB charger is inserted or removed, the users could get USB charger state and type through the uevent. Signed-off-by: Peter Chen <peter.chen@nxp.com> Link: https://lore.kernel.org/r/1579145333-1657-2-git-send-email-peter.chen@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit (git 2.34.1) at 2025-09-15 20:27:38 +0000