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* net: dsa: Add support for learning FDB through notificationArkadi Sharshevsky2017-08-073-2/+139
| | | | | | | | | | | | | | Add support for learning FDB through notification. The driver defers the hardware update via ordered work queue. In case of a successful FDB add a notification is sent back to bridge. In case of hw FDB del failure the static FDB will be deleted from the bridge, thus, the interface is moved to down state in order to indicate inconsistent situation. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: dsa: Remove switchdev dependency from DSA switch notifier chainArkadi Sharshevsky2017-08-074-20/+23
| | | | | | | | | | | | Currently, the switchdev objects are embedded inside the DSA notifier info. This patch removes this dependency. This is done as a preparation stage before adding support for learning FDB through the switchdev notification chain. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: dsa: Remove prepare phase for FDBArkadi Sharshevsky2017-08-0712-108/+36
| | | | | | | | | | | | | | | The prepare phase for FDB add is unneeded because most of DSA devices can have failures during bus transactions (SPI, I2C, etc.), thus, the prepare phase cannot guarantee success of the commit stage. The support for learning FDB through notification chain, which will be introduced in the following patches, will provide the ability to notify back the bridge about successful offload. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: dsa: Change DSA slave FDB API to be switchdev independentArkadi Sharshevsky2017-08-078-62/+49
| | | | | | | | | | In order to support FDB add/del to be on a notifier chain the slave API need to be changed to be switchdev independent. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* hamradio: baycom: make hdlcdrv_ops constBhumika Goyal2017-08-073-3/+3
| | | | | | | | | Make hdlcdrv_ops structures const as they are only passed to hdlcdrv_register function. The corresponding argument is of type const, so make the structures const. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: check that cached bundle is still validFlorian Westphal2017-08-071-1/+2
| | | | | | | | | | | | | | | | | | | | | | Quoting Ilan Tayari: 1. Set up a host-to-host IPSec tunnel (or transport, doesn't matter) 2. Ping over IPSec, or do something to populate the pcpu cache 3. Join a MC group, then leave MC group 4. Try to ping again using same CPU as before -> traffic doesn't egress the machine at all Ilan debugged the problem down to the fact that one of the path dsts devices point to lo due to earlier dst_dev_put(). In this case, dst is marked as DEAD and we cannot reuse the bundle. The cache only asserted that the requested policy and that of the cached bundle match, but its not enough - also verify the path is still valid. Fixes: ec30d78c14a813 ("xfrm: add xdst pcpu cache") Reported-by: Ayham Masood <ayhamm@mellanox.com> Tested-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'net-dsa-remove-useless-arguments'David S. Miller2017-08-075-29/+25
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Vivien Didelot says: ==================== net: dsa: remove useless arguments Several DSA core setup functions take many arguments, mostly because of the legacy code. This patch series removes the useless args of these functions, where either the dsa_switch or dsa_port argument is enough. Changes in v2: - ds->dev is already assigned by dsa_switch_alloc ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: remove useless args of dsa_slave_createVivien Didelot2017-08-074-11/+10
| | | | | | | | | | | | | | | | | | dsa_slave_create currently takes 4 arguments while it only needs the related dsa_port and its name. Remove all other arguments. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: remove useless args of dsa_cpu_dsa_setupVivien Didelot2017-08-074-12/+9
| | | | | | | | | | | | | | | | | | dsa_cpu_dsa_setup currently takes 4 arguments but they are all available from the dsa_port argument. Remove all others. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: remove useless argument in legacy setupVivien Didelot2017-08-071-8/+8
|/ | | | | | | | | | dsa_switch_alloc() already assigns ds-dev, which can be used in dsa_switch_setup_one and dsa_cpu_dsa_setups instead of requiring an additional struct device argument. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: fix spelling mistake: "capabilty" -> "capability"Colin Ian King2017-08-071-1/+2
| | | | | | | | Trivial fix to spelling mistake in dev_err error message and also split overly long line to avoid a checkpatch warning. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'Refactor-lan9303_xxx_packet_processing'David S. Miller2017-08-071-46/+50
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Egil Hjelmeland says: ==================== Refactor lan9303_xxx_packet_processing This series is purely non functional. It changes the lan9303_enable_packet_processing, lan9303_disable_packet_processing() to pass port number (0,1,2) as parameter instead of port offset. This aligns them with other functions in the module, and makes it possible to simplify the code. The lan9303_enable_packet_processing, lan9303_disable_packet_processing functions operate on port. Therefore rename the functions to reflect that as well. Reviewer pointed out lan9303_get_ethtool_stats would be better off with the use of a lan9303_read_switch_port(). So that was added to the series. Changes v3 -> v4: - Whitespace adjustments. Changes v2 -> v3: - Patch 1: Removed the change in lan9303_get_ethtool_stats - Added patch 4: rename lan9303_xxx_packet_processing - Added patch 5: refactor lan9303_get_ethtool_stats Changes v1 -> v2: - introduced lan9303_write_switch_port() in first patch - inserted LAN9303_NUM_PORTS patch - Use LAN9303_NUM_PORTS in last patch. Plus whitespace change. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: lan9303: refactor lan9303_get_ethtool_statsEgil Hjelmeland2017-08-071-10/+16
| | | | | | | | | | | | | | | | | | | | | | In lan9303_get_ethtool_stats: Get rid of 0x400 constant magic by using new lan9303_read_switch_reg() inside loop. Reduced scope of two variables. Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: lan9303: Rename lan9303_xxx_packet_processing()Egil Hjelmeland2017-08-071-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The lan9303_enable_packet_processing, lan9303_disable_packet_processing functions operate on port, so the names should reflect that. And to align with lan9303_disable_processing(), rename: lan9303_enable_packet_processing -> lan9303_enable_processing_port lan9303_disable_packet_processing -> lan9303_disable_processing_port Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: lan9303: Simplify lan9303_xxx_packet_processing() usageEgil Hjelmeland2017-08-071-14/+10
| | | | | | | | | | | | | | | | | | | | Simplify usage of lan9303_enable_packet_processing, lan9303_disable_packet_processing() Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: lan9303: define LAN9303_NUM_PORTS 3Egil Hjelmeland2017-08-071-0/+2
| | | | | | | | | | | | | | | | | | Will be used instead of '3' in upcomming patches. Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: dsa: lan9303: Change lan9303_xxx_packet_processing() port param.Egil Hjelmeland2017-08-071-23/+23
|/ | | | | | | | | | | | | | lan9303_enable_packet_processing, lan9303_disable_packet_processing() Pass port number (0,1,2) as parameter instead of port offset. Because other functions in the module pass port numbers. And to enable simplifications in following patch. Introduce lan9303_write_switch_port(). Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'ipv6-sr-add-support-for-advanced-local-segment-processing'David S. Miller2017-08-0711-25/+862
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | David Lebrun says: ==================== ipv6: sr: add support for advanced local segment processing v2: use EXPORT_SYMBOL_GPL The current implementation of IPv6 SR supports SRH insertion/encapsulation and basic segment endpoint behavior (i.e., processing of an SRH contained in a packet whose active segment (IPv6 DA) is routed to the local node). This behavior simply consists of updating the DA to the next segment and forwarding the packet accordingly. This processing is realised for all such packets, regardless of the active segment. The most recent specifications of IPv6 SR [1] [2] extend the SRH processing features as follows. Each segment endpoint defines a MyLocalSID table. This table maps segments to operations to perform. For each ingress IPv6 packet whose DA is part of a given prefix, the segment endpoint looks up the active segment (i.e., the IPv6 DA) in the MyLocalSID table and applies the corresponding operation. Such specifications enable to specify arbitrary operations besides the basic SRH processing and allow for a more fine-grained classification. This patch series implements those extended specifications by leveraging a new type of lightweight tunnel, seg6local. The MyLocalSID table is simply an arbitrary routing table (using CONFIG_IPV6_MULTIPLE_TABLES). The following commands would assign the prefix fc00::/64 to the MyLocalSID table, map the segment fc00::42 to the regular SRH processing function (named "End"), and drop all packets received with an undefined active segment: ip -6 rule add fc00::/64 lookup 100 ip -6 route add fc00::42 encap seg6local action End dev eth0 table 100 ip -6 route add blackhole default table 100 As another example, the following command would assign the segment fc00::1234 to the regular SRH processing function, except that the processed packet must be forwarded to the next-hop fc42::1 (this operation is named "End.X"): ip -6 route add fc00::1234 encap seg6local action End.X nh6 fc42::1 dev eth0 table 100 Those two basic operations (End and End.X) are defined in [1]. A more extensive list of advanced operations is defined in [2]. The first two patches of the series are preliminary work that remove an assumption about initial SRH format, and export the two functions used to insert and encapsulate an SRH onto packets. The third patch defines the new seg6local lightweight tunnel and implement the core functions. The fourth patch implements the operations needed to handle the newly defined rtnetlink attributes. The fifth patch implements a few SRH processing operations, including End and End.X. [1] https://tools.ietf.org/html/draft-ietf-6man-segment-routing-header-07 [2] https://tools.ietf.org/html/draft-filsfils-spring-srv6-network-programming-01 ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * ipv6: sr: implement several seg6local actionsDavid Lebrun2017-08-071-0/+271
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements the following seg6local actions. - SEG6_LOCAL_ACTION_END: regular SRH processing. The DA of the packet is updated to the next segment and forwarded accordingly. - SEG6_LOCAL_ACTION_END_X: same as above, except that the packet is forwarded to the specified IPv6 next-hop. - SEG6_LOCAL_ACTION_END_DX6: decapsulate the packet and forward to inner IPv6 packet to the specified IPv6 next-hop. - SEG6_LOCAL_ACTION_END_B6: insert the specified SRH directly after the IPv6 header of the packet. - SEG6_LOCAL_ACTION_END_B6_ENCAP: encapsulate the packet within an outer IPv6 header, containing the specified SRH. Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ipv6: sr: add rtnetlink functions for seg6local action parametersDavid Lebrun2017-08-071-18/+193
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the necessary functions to parse, fill, and compare seg6local rtnetlink attributes, for all defined action parameters. - The SRH parameter defines an SRH to be inserted or encapsulated. - The TABLE parameter defines the table to use for the route lookup of the next segment or the inner decapsulated packet. - The NH4 parameter defines the IPv4 next-hop for an inner decapsulated IPv4 packet. - The NH6 parameter defines the IPv6 next-hop for the next segment or for an inner decapsulated IPv6 packet - The IIF parameter defines an ingress interface index. - The OIF parameter defines an egress interface index. Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ipv6: sr: define core operations for seg6local lightweight tunnelDavid Lebrun2017-08-079-2/+407
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a new type of lightweight tunnel named seg6local. A seg6local lwt is defined by a type of action and a set of parameters. The action represents the operation to perform on the packets matching the lwt's route, and is not necessarily an encapsulation. The set of parameters are arguments for the processing function. Each action is defined in a struct seg6_action_desc within seg6_action_table[]. This structure contains the action, mandatory attributes, the processing function, and a static headroom size required by the action. The mandatory attributes are encoded as a bitmask field. The static headroom is set to a non-zero value when the processing function always add a constant number of bytes to the skb (e.g. the header size for encapsulations). To facilitate rtnetlink-related operations such as parsing, fill_encap, and cmp_encap, each type of action parameter is associated to three function pointers, in seg6_action_params[]. All actions defined in seg6_local.h are detailed in [1]. [1] https://tools.ietf.org/html/draft-filsfils-spring-srv6-network-programming-01 Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ipv6: sr: export SRH insertion functionsDavid Lebrun2017-08-073-20/+6
| | | | | | | | | | | | | | | | | | | | This patch exports the seg6_do_srh_encap() and seg6_do_srh_inline() functions. It also removes the CONFIG_IPV6_SEG6_INLINE knob that enabled the compilation of seg6_do_srh_inline(). This function is now built-in. Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ipv6: sr: allow SRH insertion with arbitrary segments_left valueDavid Lebrun2017-08-072-3/+3
|/ | | | | | | | | | | | The seg6_validate_srh() function only allows SRHs whose active segment is the first segment of the path. However, an application may insert an SRH whose active segment is not the first one. Such an application might be for example an SR-aware Virtual Network Function. This patch enables to insert SRHs with an arbitrary active segment. Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
* bpf: devmap fix mutex in rcu critical sectionJohn Fastabend2017-08-071-23/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Originally we used a mutex to protect concurrent devmap update and delete operations from racing with netdev unregister notifier callbacks. The notifier hook is needed because we increment the netdev ref count when a dev is added to the devmap. This ensures the netdev reference is valid in the datapath. However, we don't want to block unregister events, hence the initial mutex and notifier handler. The concern was in the notifier hook we search the map for dev entries that hold a refcnt on the net device being torn down. But, in order to do this we require two steps, (i) dereference the netdev: dev = rcu_dereference(map[i]) (ii) test ifindex: dev->ifindex == removing_ifindex and then finally we can swap in the NULL dev in the map via an xchg operation, xchg(map[i], NULL) The danger here is a concurrent update could run a different xchg op concurrently leading us to replace the new dev with a NULL dev incorrectly. CPU 1 CPU 2 notifier hook bpf devmap update dev = rcu_dereference(map[i]) dev = rcu_dereference(map[i]) xchg(map[i]), new_dev); rcu_call(dev,...) xchg(map[i], NULL) The above flow would create the incorrect state with the dev reference in the update path being lost. To resolve this the original code used a mutex around the above block. However, updates, deletes, and lookups occur inside rcu critical sections so we can't use a mutex in this context safely. Fortunately, by writing slightly better code we can avoid the mutex altogether. If CPU 1 in the above example uses a cmpxchg and _only_ replaces the dev reference in the map when it is in fact the expected dev the race is removed completely. The two cases being illustrated here, first the race condition, CPU 1 CPU 2 notifier hook bpf devmap update dev = rcu_dereference(map[i]) dev = rcu_dereference(map[i]) xchg(map[i]), new_dev); rcu_call(dev,...) odev = cmpxchg(map[i], dev, NULL) Now we can test the cmpxchg return value, detect odev != dev and abort. Or in the good case, CPU 1 CPU 2 notifier hook bpf devmap update dev = rcu_dereference(map[i]) odev = cmpxchg(map[i], dev, NULL) [...] Now 'odev == dev' and we can do proper cleanup. And viola the original race we tried to solve with a mutex is corrected and the trace noted by Sasha below is resolved due to removal of the mutex. Note: When walking the devmap and removing dev references as needed we depend on the core to fail any calls to dev_get_by_index() using the ifindex of the device being removed. This way we do not race with the user while searching the devmap. Additionally, the mutex was also protecting list add/del/read on the list of maps in-use. This patch converts this to an RCU list and spinlock implementation. This protects the list from concurrent alloc/free operations. The notifier hook walks this list so it uses RCU read semantics. BUG: sleeping function called from invalid context at kernel/locking/mutex.c:747 in_atomic(): 1, irqs_disabled(): 0, pid: 16315, name: syz-executor1 1 lock held by syz-executor1/16315: #0: (rcu_read_lock){......}, at: [<ffffffff8c363bc2>] map_delete_elem kernel/bpf/syscall.c:577 [inline] #0: (rcu_read_lock){......}, at: [<ffffffff8c363bc2>] SYSC_bpf kernel/bpf/syscall.c:1427 [inline] #0: (rcu_read_lock){......}, at: [<ffffffff8c363bc2>] SyS_bpf+0x1d32/0x4ba0 kernel/bpf/syscall.c:1388 Fixes: 2ddf71e23cc2 ("net: add notifier hooks for devmap bpf map") Reported-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'net_sched-clean-up-filter-handle'David S. Miller2017-08-0714-154/+178
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | Cong Wang says: ==================== net_sched: clean up filter handle This patchset sits in my local branch for a long time, it is time to send it out. It cleans up the ambiguous use of 'unsigned long fh', please see each of them for details. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * net_sched: use void pointer for filter handleWANG Cong2017-08-0714-151/+141
| | | | | | | | | | | | | | | | | | | | | | | | Now we use 'unsigned long fh' as a pointer in every place, it is safe to convert it to a void pointer now. This gets rid of many casts to pointer. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net_sched: refactor notification code for RTM_DELTFILTERWANG Cong2017-08-071-5/+39
|/ | | | | | | | | | | | | | | | | | It is confusing to use 'unsigned long fh' as both a handle and a pointer, especially commit 9ee7837449b3 ("net sched filters: fix notification of filter delete with proper handle"). This patch introduces tfilter_del_notify() so that we can pass it as a pointer as before, and we don't need to check RTM_DELTFILTER in tcf_fill_node() any more. This prepares for the next patch. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* lwtunnel: replace EXPORT_SYMBOL with EXPORT_SYMBOL_GPLRoopa Prabhu2017-08-071-13/+13
| | | | | Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'bpf-add-support-for-sys-enter-exit-tracepoints'David S. Miller2017-08-076-6/+206
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Yonghong Song says: ==================== bpf: add support for sys_{enter|exit}_* tracepoints Currently, bpf programs cannot be attached to sys_enter_* and sys_exit_* style tracepoints. The main reason is that syscalls/sys_enter_* and syscalls/sys_exit_* tracepoints are treated differently from other tracepoints and there is no bpf hook to it. This patch set adds bpf support for these syscalls tracepoints and also adds a test case for it. Changelogs: v3 -> v4: - Check the legality of ctx offset access for syscall tracepoint as well. trace_event_get_offsets will return correct max offset for each specific syscall tracepoint. - Use variable length array to avoid hardcode 6 as the maximum arguments beyond syscall_nr. v2 -> v3: - Fix a build issue v1 -> v2: - Do not use TRACE_EVENT_FL_CAP_ANY to identify syscall tracepoint. Instead use trace_event_call->class. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * bpf: add a test case for syscalls/sys_{enter|exit}_* tracepointsYonghong Song2017-08-073-0/+137
| | | | | | | | | | | | Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bpf: add support for sys_enter_* and sys_exit_* tracepointsYonghong Song2017-08-073-6/+69
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, bpf programs cannot be attached to sys_enter_* and sys_exit_* style tracepoints. The iovisor/bcc issue #748 (https://github.com/iovisor/bcc/issues/748) documents this issue. For example, if you try to attach a bpf program to tracepoints syscalls/sys_enter_newfstat, you will get the following error: # ./tools/trace.py t:syscalls:sys_enter_newfstat Ioctl(PERF_EVENT_IOC_SET_BPF): Invalid argument Failed to attach BPF to tracepoint The main reason is that syscalls/sys_enter_* and syscalls/sys_exit_* tracepoints are treated differently from other tracepoints and there is no bpf hook to it. This patch adds bpf support for these syscalls tracepoints by . permitting bpf attachment in ioctl PERF_EVENT_IOC_SET_BPF . calling bpf programs in perf_syscall_enter and perf_syscall_exit The legality of bpf program ctx access is also checked. Function trace_event_get_offsets returns correct max offset for each specific syscall tracepoint, which is compared against the maximum offset access in bpf program. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* of_mdio: use of_property_read_u32_array()Sergei Shtylyov2017-08-071-8/+8
| | | | | | | | | | | | | The "fixed-link" prop support predated of_property_read_u32_array(), so basically had to open-code it. Using the modern API saves 24 bytes of the object code (ARM gcc 4.8.5); the only behavior change would be that the prop length check is now less strict (however the strict pre-check done in of_phy_is_fixed_link() is left intact anyway)... Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ibmvnic: Report rx buffer return codes as netdev_dbgJohn Allen2017-08-071-1/+2
| | | | | | | | | | Reporting any return code for a receive buffer as an "rx error" only produces alarming noise and the only values that have been observed to be used in this field are not error conditions. Change this to a netdev_dbg with a more descriptive message. Signed-off-by: John Allen <jallen@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'net-l3mdev-Support-for-sockets-bound-to-enslaved-device'David S. Miller2017-08-0723-135/+228
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | David Ahern says: ==================== net: l3mdev: Support for sockets bound to enslaved device A missing piece to the VRF puzzle is the ability to bind sockets to devices enslaved to a VRF. This patch set adds the enslaved device index, sdif, to IPv4 and IPv6 socket lookups. The end result for users is the following scope options for services: 1. "global" services - sockets not bound to any device Allows 1 service to work across all network interfaces with connected sockets bound to the VRF the connection originates (Requires net.ipv4.tcp_l3mdev_accept=1 for TCP and net.ipv4.udp_l3mdev_accept=1 for UDP) 2. "VRF" local services - sockets bound to a VRF Sockets work across all network interfaces enslaved to a VRF but are limited to just the one VRF. 3. "device" services - sockets bound to a specific network interface Service works only through the one specific interface. v3 - convert __inet_lookup_established in dccp_v4_err; missed in v2 v2 - remove sk_lookup struct and add sdif as an argument to existing functions Changes since RFC: - no significant logic changes; mainly whitespace cleanups ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: ipv6: add second dif to raw socket lookupsDavid Ahern2017-08-073-7/+10
| | | | | | | | | | | | | | | | | | | | Add a second device index, sdif, to raw socket lookups. sdif is the index for ingress devices enslaved to an l3mdev. It allows the lookups to consider the enslaved device as well as the L3 domain when searching for a socket. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: ipv6: add second dif to inet6 socket lookupsDavid Ahern2017-08-077-32/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a second device index, sdif, to inet6 socket lookups. sdif is the index for ingress devices enslaved to an l3mdev. It allows the lookups to consider the enslaved device as well as the L3 domain when searching for a socket. TCP moves the data in the cb. Prior to tcp_v4_rcv (e.g., early demux) the ingress index is obtained from IPCB using inet_sdif and after tcp_v4_rcv tcp_v4_sdif is used. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: ipv6: add second dif to udp socket lookupsDavid Ahern2017-08-074-21/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a second device index, sdif, to udp socket lookups. sdif is the index for ingress devices enslaved to an l3mdev. It allows the lookups to consider the enslaved device as well as the L3 domain when searching for a socket. Early demux lookups are handled in the next patch as part of INET_MATCH changes. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: ipv4: add second dif to multicast source filterDavid Ahern2017-08-074-5/+8
| | | | | | | | | | Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: ipv4: add second dif to raw socket lookupsDavid Ahern2017-08-073-7/+13
| | | | | | | | | | | | | | | | | | | | Add a second device index, sdif, to raw socket lookups. sdif is the index for ingress devices enslaved to an l3mdev. It allows the lookups to consider the enslaved device as well as the L3 domain when searching for a socket. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: ipv4: add second dif to inet socket lookupsDavid Ahern2017-08-077-35/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a second device index, sdif, to inet socket lookups. sdif is the index for ingress devices enslaved to an l3mdev. It allows the lookups to consider the enslaved device as well as the L3 domain when searching for a socket. TCP moves the data in the cb. Prior to tcp_v4_rcv (e.g., early demux) the ingress index is obtained from IPCB using inet_sdif and after the cb move in tcp_v4_rcv the tcp_v4_sdif helper is used. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: ipv4: add second dif to udp socket lookupsDavid Ahern2017-08-074-28/+48
|/ | | | | | | | | | | | | Add a second device index, sdif, to udp socket lookups. sdif is the index for ingress devices enslaved to an l3mdev. It allows the lookups to consider the enslaved device as well as the L3 domain when searching for a socket. Early demux lookups are handled in the next patch as part of INET_MATCH changes. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'wireless-drivers-next-for-davem-2017-08-07' of ↵David S. Miller2017-08-07162-6294/+9060
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Kalle Valo says: ==================== wireless-drivers-next patches for 4.14 The first wireless-drivers-next pull request for 4.14. I'm submitting this unusally late in the cycle as my vacation postponed this. But even if this is late there's not still that much new features, mostly cleanup or fixes. Major changes: ath10k * preparation for wcn3990 support iwlwifi * Reorganization of the code into separate directories continues qtnfmac * regulatory support updates * add get_channel, dump_survey and channel_switch cfg80211 handlers ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * rtlwifi: Replace hardcode value with macroSouptick Joarder2017-08-032-3/+4
| | | | | | | | | | | | | | | | | | In _rtl_init_mac80211(), hardcoded value for hw->max_listen_interval and hw->max_rate_tries are replaced by macro and removed the comment. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Acked-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| * mwifiex: pcie: compatible with wifi-only image while extract wifi-part fwXinming Hu2017-08-031-7/+19
| | | | | | | | | | | | | | | | | | | | Sometimes, we might using wifi-only firmware with a combo firmware name, in this case, do not need to filter bluetooth part from header. Signed-off-by: Xinming Hu <huxm@marvell.com> Signed-off-by: Cathy Luo <cluo@marvell.com> Reviewed-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| * mwifiex: make addba request command cleanXinming Hu2017-08-031-0/+2
| | | | | | | | | | | | | | | | | | uninitilized variable, such as .add_req_result might be magic stack value. Initialize the structure to make it clean. Signed-off-by: Xinming Hu <huxm@marvell.com> Signed-off-by: Cathy Luo <cluo@marvell.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| * net: qtnfmac: constify pci_device_id.Arvind Yadav2017-08-031-1/+1
| | | | | | | | | | | | | | | | | | | | pci_device_id are not supposed to change at runtime. All functions working with pci_device_id provided by <linux/pci.h> work with const pci_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| * hostap: Fix outdated comment about dev->destructorStefano Brivio2017-08-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | After commit cf124db566e6 ("net: Fix inconsistent teardown and release of private netdev state."), setting 'dev->needs_free_netdev' ensures device data is released, and 'dev->destructor' is not used anymore. Fixes: cf124db566e6 ("net: Fix inconsistent teardown and release of private netdev state.") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| * rtlwifi: rtl8192ee: constify pci_device_id.Arvind Yadav2017-08-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pci_device_id are not supposed to change at runtime. All functions working with pci_device_id provided by <linux/pci.h> work with const pci_device_id. So mark the non-const structs as const. File size before: text data bss dec hex filename 1899 928 0 2827 b0b realtek/rtlwifi/rtl8192ee/sw.o File size After adding 'const': text data bss dec hex filename 1963 864 0 2827 b0b realtek/rtlwifi/rtl8192ee/sw.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| * rtlwifi: rtl8188ee: constify pci_device_id.Arvind Yadav2017-08-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pci_device_id are not supposed to change at runtime. All functions working with pci_device_id provided by <linux/pci.h> work with const pci_device_id. So mark the non-const structs as const. File size before: text data bss dec hex filename 3090 912 0 4002 fa2 realtek/rtlwifi/rtl8188ee/sw.o File size After adding 'const': text data bss dec hex filename 3154 848 0 4002 fa2 realtek/rtlwifi/rtl8188ee/sw.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| * rtlwifi: rtl8723be: constify pci_device_id.Arvind Yadav2017-08-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pci_device_id are not supposed to change at runtime. All functions working with pci_device_id provided by <linux/pci.h> work with const pci_device_id. So mark the non-const structs as const. File size before: text data bss dec hex filename 3032 912 0 3944 f68 realtek/rtlwifi/rtl8723be/sw.o File size After adding 'const': text data bss dec hex filename 3096 848 0 3944 f68 realtek/rtlwifi/rtl8723be/sw.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-27 05:06:57 +0000