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2019-07-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller2-17/+36
Daniel Borkmann says: ==================== pull-request: bpf-next 2019-07-09 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Lots of libbpf improvements: i) addition of new APIs to attach BPF programs to tracing entities such as {k,u}probes or tracepoints, ii) improve specification of BTF-defined maps by eliminating the need for data initialization for some of the members, iii) addition of a high-level API for setting up and polling perf buffers for BPF event output helpers, all from Andrii. 2) Add "prog run" subcommand to bpftool in order to test-run programs through the kernel testing infrastructure of BPF, from Quentin. 3) Improve verifier for BPF sockaddr programs to support 8-byte stores for user_ip6 and msg_src_ip6 members given clang tends to generate such stores, from Stanislav. 4) Enable the new BPF JIT zero-extension optimization for further riscv64 ALU ops, from Luke. 5) Fix a bpftool json JIT dump crash on powerpc, from Jiri. 6) Fix an AF_XDP race in generic XDP's receive path, from Ilya. 7) Various smaller fixes from Ilya, Yue and Arnd. ==================== Signed-off-by: David S. Miller <[email protected]>
2019-07-09xdp: fix race on generic receive pathIlya Maximets1-9/+22
Unlike driver mode, generic xdp receive could be triggered by different threads on different CPU cores at the same time leading to the fill and rx queue breakage. For example, this could happen while sending packets from two processes to the first interface of veth pair while the second part of it is open with AF_XDP socket. Need to take a lock for each generic receive to avoid race. Fixes: c497176cb2e4 ("xsk: add Rx receive functions and poll support") Signed-off-by: Ilya Maximets <[email protected]> Acked-by: Magnus Karlsson <[email protected]> Tested-by: William Tu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2019-07-08ipv6: Support multipath hashing on inner IP pktsStephen Suryaputra1-0/+36
Make the same support as commit 363887a2cdfe ("ipv4: Support multipath hashing on inner IP pkts for GRE tunnel") for outer IPv6. The hashing considers both IPv4 and IPv6 pkts when they are tunneled by IPv6 GRE. Signed-off-by: Stephen Suryaputra <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08ipv4: Multipath hashing on inner L3 needs to consider inner IPv6 pktsStephen Suryaputra1-4/+17
Commit 363887a2cdfe ("ipv4: Support multipath hashing on inner IP pkts for GRE tunnel") supports multipath policy value of 2, Layer 3 or inner Layer 3 if present, but it only considers inner IPv4. There is a use case of IPv6 is tunneled by IPv4 GRE, thus add the ability to hash on inner IPv6 addresses. Fixes: 363887a2cdfe ("ipv4: Support multipath hashing on inner IP pkts for GRE tunnel") Signed-off-by: Stephen Suryaputra <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08sunrpc/cache: remove the exporting of cache_seq_nextDenis Efremov1-1/+0
The function cache_seq_next is declared static and marked EXPORT_SYMBOL_GPL, which is at best an odd combination. Because the function is not used outside of the net/sunrpc/cache.c file it is defined in, this commit removes the EXPORT_SYMBOL_GPL() marking. Fixes: d48cf356a130 ("SUNRPC: Remove non-RCU protected lookup") Signed-off-by: Denis Efremov <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2019-07-08net: openvswitch: use netif_ovs_is_port() instead of opencodeTaehee Yoo2-4/+4
Use netif_ovs_is_port() function instead of open code. This patch doesn't change logic. Signed-off-by: Taehee Yoo <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08vsock/virtio: fix flush of works during the .remove()Stefano Garzarella1-6/+9
This patch moves the flush of works after vdev->config->del_vqs(vdev), because we need to be sure that no workers run before to free the 'vsock' object. Since we stopped the workers using the [tx|rx|event]_run flags, we are sure no one is accessing the device while we are calling vdev->config->reset(vdev), so we can safely move the workers' flush. Before the vdev->config->del_vqs(vdev), workers can be scheduled by VQ callbacks, so we must flush them after del_vqs(), to avoid use-after-free of 'vsock' object. Suggested-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Stefano Garzarella <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08vsock/virtio: stop workers during the .remove()Stefano Garzarella1-1/+50
Before to call vdev->config->reset(vdev) we need to be sure that no one is accessing the device, for this reason, we add new variables in the struct virtio_vsock to stop the workers during the .remove(). This patch also add few comments before vdev->config->reset(vdev) and vdev->config->del_vqs(vdev). Suggested-by: Stefan Hajnoczi <[email protected]> Suggested-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Stefano Garzarella <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08vsock/virtio: use RCU to avoid use-after-free on the_virtio_vsockStefano Garzarella1-24/+46
Some callbacks used by the upper layers can run while we are in the .remove(). A potential use-after-free can happen, because we free the_virtio_vsock without knowing if the callbacks are over or not. To solve this issue we move the assignment of the_virtio_vsock at the end of .probe(), when we finished all the initialization, and at the beginning of .remove(), before to release resources. For the same reason, we do the same also for the vdev->priv. We use RCU to be sure that all callbacks that use the_virtio_vsock ended before freeing it. This is not required for callbacks that use vdev->priv, because after the vdev->config->del_vqs() we are sure that they are ended and will no longer be invoked. We also take the mutex during the .remove() to avoid that .probe() can run while we are resetting the device. Signed-off-by: Stefano Garzarella <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08net: core: page_pool: add user refcnt and reintroduce page_pool_destroyIvan Khoronzhuk2-0/+11
Jesper recently removed page_pool_destroy() (from driver invocation) and moved shutdown and free of page_pool into xdp_rxq_info_unreg(), in-order to handle in-flight packets/pages. This created an asymmetry in drivers create/destroy pairs. This patch reintroduce page_pool_destroy and add page_pool user refcnt. This serves the purpose to simplify drivers error handling as driver now drivers always calls page_pool_destroy() and don't need to track if xdp_rxq_info_reg_mem_model() was unsuccessful. This could be used for a special cases where a single RX-queue (with a single page_pool) provides packets for two net_device'es, and thus needs to register the same page_pool twice with two xdp_rxq_info structures. This patch is primarily to ease API usage for drivers. The recently merged netsec driver, actually have a bug in this area, which is solved by this API change. This patch is a modified version of Ivan Khoronzhuk's original patch. Link: https://lore.kernel.org/netdev/[email protected]/ Fixes: 5c67bf0ec4d0 ("net: netsec: Use page_pool API") Signed-off-by: Jesper Dangaard Brouer <[email protected]> Reviewed-by: Ilias Apalodimas <[email protected]> Acked-by: Jesper Dangaard Brouer <[email protected]> Reviewed-by: Saeed Mahameed <[email protected]> Signed-off-by: Ivan Khoronzhuk <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08nfc: fix potential illegal memory accessYang Wei1-1/+1
The frags_q is not properly initialized, it may result in illegal memory access when conn_info is NULL. The "goto free_exit" should be replaced by "goto exit". Signed-off-by: Yang Wei <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller18-81/+668
Pablo Neira Ayuso says: ==================== Netfilter/IPVS updates for net-next The following patchset contains Netfilter/IPVS updates for net-next: 1) Move bridge keys in nft_meta to nft_meta_bridge, from wenxu. 2) Support for bridge pvid matching, from wenxu. 3) Support for bridge vlan protocol matching, also from wenxu. 4) Add br_vlan_get_pvid_rcu(), to fetch the bridge port pvid from packet path. 5) Prefer specific family extension in nf_tables. 6) Autoload specific family extension in case it is missing. 7) Add synproxy support to nf_tables, from Fernando Fernandez Mancera. 8) Support for GRE encapsulation in IPVS, from Vadim Fedorenko. 9) ICMP handling for GRE encapsulation, from Julian Anastasov. 10) Remove unused parameter in nf_queue, from Florian Westphal. 11) Replace seq_printf() by seq_puts() in nf_log, from Markus Elfring. 12) Rename nf_SYNPROXY.h => nf_synproxy.h before this header becomes public. ==================== Signed-off-by: David S. Miller <[email protected]>
2019-07-08bpf: allow wide (u64) aligned stores for some fields of bpf_sock_addrStanislav Fomichev1-8/+14
Since commit cd17d7770578 ("bpf/tools: sync bpf.h") clang decided that it can do a single u64 store into user_ip6[2] instead of two separate u32 ones: # 17: (18) r2 = 0x100000000000000 # ; ctx->user_ip6[2] = bpf_htonl(DST_REWRITE_IP6_2); # 19: (7b) *(u64 *)(r1 +16) = r2 # invalid bpf_context access off=16 size=8 >From the compiler point of view it does look like a correct thing to do, so let's support it on the kernel side. Credit to Andrii Nakryiko for a proper implementation of bpf_ctx_wide_store_ok. Cc: Andrii Nakryiko <[email protected]> Cc: Yonghong Song <[email protected]> Fixes: cd17d7770578 ("bpf/tools: sync bpf.h") Reported-by: kernel test robot <[email protected]> Acked-by: Yonghong Song <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Signed-off-by: Stanislav Fomichev <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2019-07-08rbd: support for object-map and fast-diffIlya Dryomov2-0/+62
Speed up reads, discards and zeroouts through RBD_OBJ_FLAG_MAY_EXIST and RBD_OBJ_FLAG_NOOP_FOR_NONEXISTENT based on object map. Invalid object maps are not trusted, but still updated. Note that we never iterate, resize or invalidate object maps. If object-map feature is enabled but object map fails to load, we just fail the requester (either "rbd map" or I/O, by way of post-acquire action). Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: export osd_req_op_data() macroIlya Dryomov1-8/+0
We already have one exported wrapper around it for extent.osd_data and rbd_object_map_update_finish() needs another one for cls.request_data. Signed-off-by: Ilya Dryomov <[email protected]> Reviewed-by: Dongsheng Yang <[email protected]> Reviewed-by: Jeff Layton <[email protected]>
2019-07-08libceph: change ceph_osdc_call() to take page vector for responseIlya Dryomov2-6/+6
This will be used for loading object map. rbd_obj_read_sync() isn't suitable because object map must be accessed through class methods. Signed-off-by: Ilya Dryomov <[email protected]> Reviewed-by: Dongsheng Yang <[email protected]> Reviewed-by: Jeff Layton <[email protected]>
2019-07-08libceph: rename r_unsafe_item to r_private_itemIlya Dryomov1-2/+2
This list item remained from when we had safe and unsafe replies (commit vs ack). It has since become a private list item for use by clients. Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: rename ceph_encode_addr to ceph_encode_banner_addrJeff Layton1-3/+3
...ditto for the decode function. We only use these functions to fix up banner addresses now, so let's name them more appropriately. Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: use TYPE_LEGACY for entity addrs instead of TYPE_NONEJeff Layton2-14/+11
Going forward, we'll have different address types so let's use the addr2 TYPE_LEGACY for internal tracking rather than TYPE_NONE. Also, make ceph_pr_addr print the address type value as well. Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08ceph: fix decode_locker to use ceph_decode_entity_addrJeff Layton1-2/+5
Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: correctly decode ADDR2 addresses in incremental OSD mapsJeff Layton1-5/+10
Given the new format, we have to decode the addresses twice. Once to skip past the new_up_client field, and a second time to collect the addresses. Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: fix watch_item_t decoding to use ceph_decode_entity_addrJeff Layton1-7/+13
While we're in there, let's also fix up the decoder to do proper bounds checking. Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: switch osdmap decoding to use ceph_decode_entity_addrJeff Layton1-8/+8
Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: ADDR2 support for monmapJeff Layton1-8/+13
Switch the MonMap decoder to use the new decoding routine for entity_addr_t's. Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: add ceph_decode_entity_addrJeff Layton2-1/+91
Add a function for decoding an entity_addr_t. Once CEPH_FEATURE_MSG_ADDR2 is enabled, the server daemons will start encoding entity_addr_t differently. Add a new helper function that can handle either format. Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: fix sa_family just after reading addressJeff Layton1-3/+2
It doesn't make sense to leave it undecoded until later. Signed-off-by: Jeff Layton <[email protected]> Reviewed-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-08libceph: remove ceph_get_direct_page_vector()Christoph Hellwig1-33/+0
This function is entirely unused. Signed-off-by: Christoph Hellwig <[email protected]> Reviewed-by: Ilya Dryomov <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2019-07-07net: bpfilter: print umh messages to /dev/kmsgGary Lin1-1/+1
bpfilter_umh currently printed all messages to /dev/console and this might interfere the user activity(*). This commit changes the output device to /dev/kmsg so that the messages from bpfilter_umh won't show on the console directly. (*) https://bugzilla.suse.com/show_bug.cgi?id=1140221 Signed-off-by: Gary Lin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-07net/tls: fix poll ignoring partially copied recordsJakub Kicinski1-1/+2
David reports that RPC applications which use epoll() occasionally get stuck, and that TLS ULP causes the kernel to not wake applications, even though read() will return data. This is indeed true. The ctx->rx_list which holds partially copied records is not consulted when deciding whether socket is readable. Note that SO_RCVLOWAT with epoll() is and has always been broken for kernel TLS. We'd need to parse all records from the TCP layer, instead of just the first one. Fixes: 692d7b5d1f91 ("tls: Fix recvmsg() to be able to peek across multiple records") Reported-by: David Beckett <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Dirk van der Merwe <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-07tipc: use rcu dereference functions properlyXin Long2-11/+11
For these places are protected by rcu_read_lock, we change from rcu_dereference_rtnl to rcu_dereference, as there is no need to check if rtnl lock is held. For these places are protected by rtnl_lock, we change from rcu_dereference_rtnl to rtnl_dereference/rcu_dereference_protected, as no extra memory barriers are needed under rtnl_lock() which also protects tn->bearer_list[] and dev->tipc_ptr/b->media_ptr updating. rcu_dereference_rtnl will be only used in the places where it could be under rcu_read_lock or rtnl_lock. Signed-off-by: Xin Long <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2019-07-08init/Kconfig: add CONFIG_CC_CAN_LINKMasahiro Yamada1-1/+1
Currently, scripts/cc-can-link.sh is run just for BPFILTER_UMH, but defining CC_CAN_LINK will be useful in other places. Signed-off-by: Masahiro Yamada <[email protected]>
2019-07-06Bluetooth: 6lowpan: always check destination addressJosua Mayer1-12/+0
BLE based 6LoWPAN networks are highly constrained in bandwidth. Do not take a short-cut, always check if the destination address is known to belong to a peer. As a side-effect this also removes any behavioral differences between one, and two or more connected peers. Acked-by: Jukka Rissanen <[email protected]> Tested-by: Michael Scott <[email protected]> Signed-off-by: Josua Mayer <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]>
2019-07-06Bluetooth: 6lowpan: check neighbour table for SLAACJosua Mayer1-0/+15
Like any IPv6 capable device, 6LNs can have multiple addresses assigned using SLAAC and made known through neighbour advertisements. After checking the destination address against all peers link-local addresses, consult the neighbour cache for additional known addresses. RFC7668 defines the scope of Neighbor Advertisements in Section 3.2.3: 1. "A Bluetooth LE 6LN MUST NOT register its link-local address" 2. "A Bluetooth LE 6LN MUST register its non-link-local addresses with the 6LBR by sending Neighbor Solicitation (NS) messages ..." Due to these constranits both the link-local addresses tracked in the list of 6lowpan peers, and the neighbour cache have to be used when identifying the 6lowpan peer for a destination address. Acked-by: Jukka Rissanen <[email protected]> Tested-by: Michael Scott <[email protected]> Signed-off-by: Josua Mayer <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]>
2019-07-06Bluetooth: 6lowpan: search for destination address in all peersJosua Mayer1-4/+10
Handle overlooked case where the target address is assigned to a peer and neither route nor gateway exist. For one peer, no checks are performed to see if it is meant to receive packets for a given address. As soon as there is a second peer however, checks are performed to deal with routes and gateways for handling complex setups with multiple hops to a target address. This logic assumed that no route and no gateway imply that the destination address can not be reached, which is false in case of a direct peer. Acked-by: Jukka Rissanen <[email protected]> Tested-by: Michael Scott <[email protected]> Signed-off-by: Josua Mayer <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]>
2019-07-06SUNRPC: Fix possible autodisconnect during connect due to old last_usedDave Wysochanski1-1/+1
Ensure last_used is updated before calling mod_timer inside xprt_schedule_autodisconnect. This avoids a possible xprt_autoclose firing immediately after a successful connect when xprt_unlock_connect calls xprt_schedule_autodisconnect with an old value of last_used. Signed-off-by: Dave Wysochanski <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Drop redundant CONFIG_ from CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPESAnna Schumaker1-1/+1
The "CONFIG_" portion is added automatically, so this was being expanded into "CONFIG_CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES" Signed-off-by: Anna Schumaker <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06Merge branch 'multipath_tcp'Trond Myklebust4-32/+135
2019-07-06SUNRPC: Remove warning in debugfs.c when compiling with W=1Trond Myklebust1-1/+1
Remove the following warning: net/sunrpc/debugfs.c:13: warning: cannot understand function prototype: 'struct dentry *topdir; Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06Merge branch 'bh-remove'Trond Myklebust6-90/+160
2019-07-06SUNRPC: add links for all client xprts to debugfsNeilBrown1-17/+29
Now that a client can have multiple xprts, we need to add them all to debugs. The first one is still "xprt" Subsequent xprts are "xprt1", "xprt2", etc. Signed-off-by: NeilBrown <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Count ops completing with tk_status < 0Dave Wysochanski1-2/+6
We often see various error conditions with NFS4.x that show up with a very high operation count all completing with tk_status < 0 in a short period of time. Add a count to rpc_iostats to record on a per-op basis the ops that complete in this manner, which will enable lower overhead diagnostics. Signed-off-by: Dave Wysochanski <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: enhance rpc_clnt_show_stats() to report on all xprts.NeilBrown1-6/+9
Now that a client can have multiple xprts, we need to report the statistics for all of them. Reported-by: Chuck Lever <[email protected]> Signed-off-by: NeilBrown <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Use proper printk specifiers for unsigned long longDave Wysochanski1-1/+1
Update the printk specifiers inside _print_rpc_iostats to avoid a checkpatch warning. Signed-off-by: Dave Wysochanski <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Move call to rpc_count_iostats before rpc_call_doneDave Wysochanski2-4/+5
For diagnostic purposes, it would be useful to have an rpc_iostats metric of RPCs completing with tk_status < 0. Unfortunately, tk_status is reset inside the rpc_call_done functions for each operation, and the call to tally the per-op metrics comes after rpc_call_done. Refactor the call to rpc_count_iostat earlier in rpc_exit_task so we can count these RPCs completing in error. Signed-off-by: Dave Wysochanski <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06NFS: send state management on a single connection.NeilBrown1-1/+23
With NFSv4.1, different network connections need to be explicitly bound to a session. During session startup, this is not possible so only a single connection must be used for session startup. So add a task flag to disable the default round-robin choice of connections (when nconnect > 1) and force the use of a single connection. Then use that flag on all requests for session management - for consistence, include NFSv4.0 management (SETCLIENTID) and session destruction Reported-by: Chuck Lever <[email protected]> Signed-off-by: NeilBrown <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Allow creation of RPC clients with multiple connectionsTrond Myklebust2-3/+17
Add an argument to struct rpc_create_args that allows the specification of how many transport connections you want to set up to the server. Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Remove the bh-safe lock requirement on the rpc_wait_queue->lockTrond Myklebust1-25/+25
Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Add basic load balancing to the transport switchTrond Myklebust2-4/+56
For now, just count the queue length. It is less accurate than counting number of bytes queued, but easier to implement. Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Remove the bh-safe lock requirement on xprt->transport_lockTrond Myklebust5-53/+47
Signed-off-by: Trond Myklebust <[email protected]>
2019-07-06SUNRPC: Replace direct task wakeups from softirq contextTrond Myklebust1-6/+72
Replace the direct task wakeups from inside a softirq context with wakeups from a process context. Signed-off-by: Trond Myklebust <[email protected]>
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