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2016-01-07phy: Centralise print about attached phyAndrew Lunn25-82/+64
Many Ethernet drivers contain the same netdev_info() print statement about the attached phy. Move it into the phy device code. Additionally add a varargs function which can be used to append additional information. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-07phy: phy_{read|write}_mmd_indirect: get addr from phydevAndrew Lunn5-37/+25
The address of the device can be determined from the phydev structure, rather than passing it as a parameter. 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>
2016-01-07net: dnet: Use phy_find_first() helperAndrew Lunn1-7/+1
Replace the open coded search for the first phy with a call to the existing helper function. 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>
2016-01-07phy: add phydev_name() wrapperAndrew Lunn26-39/+44
Add a phydev_name() function, to help with moving some structure members from phy_device. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-07phy: Add phydev_err() and phydev_dbg() macrosAndrew Lunn5-13/+23
In preparation for moving some of the phy_device structure members, add macros for printing errors and debug information. 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>
2016-01-07phy: Use phy_read() instead of mdiobus_read()Andrew Lunn1-68/+36
Since we have a phydev, make use of it and the phy_read() function. This will help with later refactoring. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-07mdio: Move mdiobus_read/write operatings into mdio.hAndrew Lunn2-5/+7
These are logically MDIO operations, not phy operations, so move them into the mdio header. 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>
2016-01-07phy: Consistently use addr for address on an MII busAndrew Lunn1-2/+2
Within phy.h, an address on an MII bus has been called both addr and phy_id. phy_id is particularly confusion, since it also means the ID found in register 3, if the device on the bus is a phy. Consistently use addr. 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>
2016-01-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller32-134/+173
2016-01-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds24-117/+150
Pull networking fixes from David Miller: "As usual, there are a couple straggler bug fixes: 1) qlcnic_alloc_mbx_args() error returns are not checked in qlcnic driver. Fix from Insu Yun. 2) SKB refcounting bug in connector, from Florian Westphal. 3) vrf_get_saddr() has to propagate fib_lookup() errors to it's callers, from David Ahern. 4) Fix AF_UNIX splice/bind deadlock, from Rainer Weikusat. 5) qdisc_rcu_free() fails to free the per-cpu qstats. Fix from John Fastabend. 6) vmxnet3 driver passes wrong page to dma_map_page(), fix from Shrikrishna Khare. 7) Don't allow zero cwnd in tcp_cwnd_reduction(), from Yuchung Cheng" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: tcp: fix zero cwnd in tcp_cwnd_reduction Driver: Vmxnet3: Fix regression caused by 5738a09 net: qmi_wwan: Add WeTelecom-WPD600N mkiss: fix scribble on freed memory net: possible use after free in dst_release net: sched: fix missing free per cpu on qstats ARM: net: bpf: fix zero right shift 6pack: fix free memory scribbles net: filter: make JITs zero A for SKF_AD_ALU_XOR_X bridge: Only call /sbin/bridge-stp for the initial network namespace af_unix: Fix splice-bind deadlock net: Propagate lookup failure in l3mdev_get_saddr to caller r8152: add reset_resume function connector: bump skb->users before callback invocation cxgb4: correctly handling failed allocation qlcnic: correctly handle qlcnic_alloc_mbx_args
2016-01-06tcp: fix zero cwnd in tcp_cwnd_reductionYuchung Cheng1-0/+3
Patch 3759824da87b ("tcp: PRR uses CRB mode by default and SS mode conditionally") introduced a bug that cwnd may become 0 when both inflight and sndcnt are 0 (cwnd = inflight + sndcnt). This may lead to a div-by-zero if the connection starts another cwnd reduction phase by setting tp->prior_cwnd to the current cwnd (0) in tcp_init_cwnd_reduction(). To prevent this we skip PRR operation when nothing is acked or sacked. Then cwnd must be positive in all cases as long as ssthresh is positive: 1) The proportional reduction mode inflight > ssthresh > 0 2) The reduction bound mode a) inflight == ssthresh > 0 b) inflight < ssthresh sndcnt > 0 since newly_acked_sacked > 0 and inflight < ssthresh Therefore in all cases inflight and sndcnt can not both be 0. We check invalid tp->prior_cwnd to avoid potential div0 bugs. In reality this bug is triggered only with a sequence of less common events. For example, the connection is terminating an ECN-triggered cwnd reduction with an inflight 0, then it receives reordered/old ACKs or DSACKs from prior transmission (which acks nothing). Or the connection is in fast recovery stage that marks everything lost, but fails to retransmit due to local issues, then receives data packets from other end which acks nothing. Fixes: 3759824da87b ("tcp: PRR uses CRB mode by default and SS mode conditionally") Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: Add eth_platform_get_mac_address() helper.David S. Miller3-0/+41
A repeating pattern in drivers has become to use OF node information and, if not found, platform specific host information to extract the ethernet address for a given device. Currently this is done with a call to of_get_mac_address() and then some ifdef'd stuff for SPARC. Consolidate this into a portable routine, and provide the arch_get_platform_mac_address() weak function hook for all architectures to implement if they want. Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06Driver: Vmxnet3: Fix regression caused by 5738a09Shrikrishna Khare2-6/+6
Reported-by: Bingkuo Liu <bingkuol@vmware.com> Signed-off-by: Shrikrishna Khare <skhare@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: move ndo_features_check() close to ndo_start_xmit()Eric Dumazet1-11/+11
TX fast path uses ndo_start_xmit(), ndo_features_check() and ndo_select_queue(). Move ndo_features_check() close to ndo_start_xmit() to increase data locality. All "struct net_device_ops" should now be using C99 initializers. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: qmi_wwan: Add WeTelecom-WPD600NKristian Evensen1-0/+1
The WeTelecom-WPD600N is an LTE module that, in addition to supporting most "normal" bands, also supports LTE over 450MHz. Manual testing showed that only interface number three replies to QMI messages. Cc: Bjørn Mork <bjorn@mork.no> Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06fsl/fman: double free on probe failureDan Carpenter1-1/+0
"priv" is allocated with devm_kzalloc() so freeing it here with kfree() will lead to a double free. Fixes: 3933961682a3 ('fsl/fman: Add FMan MAC driver') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06fsl/fman: fix the pause_time testDan Carpenter1-1/+1
pause_time is unsigned so it can't be less than zero. The bug means that we allow invalid pause-times. Fixes: 57ba4c9b56d8 ('fsl/fman: Add FMan MAC support') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06mlxsw: core: remove an unnecessary conditionDan Carpenter1-1/+1
We checked "err" on the lines before so we know it's zero here. These cause a static checker warning because checking known things can indicate a bug. Maybe there is a missing assignment or we are checking the wrong variable. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06mkiss: fix scribble on freed memoryAlan1-0/+5
commit d79f16c046086f4fe0d42184a458e187464eb83e fixed a user triggerable scribble on free memory but added a new one which allows the user to scribble even more and user controlled data into freed space. As with 6pack we need to halt the queue before we free the buffers, because the transmit logic is not protected by the semaphore. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06ethernet/atheros/alx: sanitize buffer sizing and paddingJarod Wilson3-12/+14
This is based on the work done by Przemek Rudy in bug 70761 at bugzilla.kernel.org, but with some work done to disentagle and clarify things a bit. Similar to Przemek's work and other drivers, we're adding a padding of 16 here, but we're also disentangling mtu size calculations from max buffer size calculations a bit, and adding ETH_HLEN to the value written into ALX_MTU. Hopefully, with a bit more consistency and clarity, things behave better here. Sadly, I can only test in my alx-driven E2200, which worked just fine before this patch. In comment #58 of bug 70761, Eugene A. Shatokhin reports that this patch does help considerably for a ROSA Linux user of his with an AR8162 network adapter when patched into a 4.1.x-based kernel, with several days of normal operation where wired network previously wasn't usable without setting MTU to 9000 as a work-around. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70761 CC: "Eugene A. Shatokhin" <eugene.shatokhin@rosalab.ru> CC: Przemek Rudy <prudy1@o2.pl> CC: Jay Cliburn <jcliburn@gmail.com> CC: Chris Snook <chris.snook@gmail.com> CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: possible use after free in dst_releaseFrancesco Ruggeri1-1/+2
dst_release should not access dst->flags after decrementing __refcnt to 0. The dst_entry may be in dst_busy_list and dst_gc_task may dst_destroy it before dst_release gets a chance to access dst->flags. Fixes: d69bbf88c8d0 ("net: fix a race in dst_release()") Fixes: 27b75c95f10d ("net: avoid RCU for NOCACHE dst") Signed-off-by: Francesco Ruggeri <fruggeri@arista.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06Merge branch 'mlxsw-vlan_filtering-offload'David S. Miller6-8/+82
Jiri Pirko says: ==================== mlxsw: add offload support for vlan_filtering option Elad says: This patch adds SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING port attribute. When a bridge is offloaded to hardware, the hardware can learn if the bridge is .1Q bridge (VLAN-aware) or not VLAN aware bridge. In order to toggle the mode a user can use sysfs: $ echo 1 > /sys/devices/virtual/net/br0/bridge/vlan_filtering or via iproute2: $ ip link set dev br0 type bridge vlan_filtering 1 --- v1->v2: small fix in patch #1 ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06mlxsw: Remember untagged VLANsElad Raz3-1/+17
When a vlan is been configured, remeber the untagged mode of the vlan. When displaying the list of configured VLANs, show the untagged attribute. Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06mlxsw: Disable vlan_filtering for non .1D bridgeElad Raz1-0/+21
When a port is bridged, the bridge must be vlan aware bridge (.1Q) or the bridging should be on top of VLAN interfaces (.1D bridge). Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06mlxsw: Renaming local variable names for consistencyElad Raz1-3/+3
Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06mlxsw: Fixing vlans init rangeElad Raz1-1/+2
Initialize VLANs 0..4095 (Remove init for VID 4096). Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06bridge: add vlan filtering change for new bridged deviceElad Raz1-0/+11
Notifying hardware about newly bridged port vlan-aware changes. Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06bridge: add vlan filtering change notificationElad Raz1-2/+16
Notifying hardware about bridge vlan-aware changes. Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06switchdev: add bridge vlan_filtering attributeElad Raz1-0/+2
Adding vlan_filtering attribute to allow hardware vendor to support vlan-aware bridges. Vlan_filtering is a per-bridge attribute. Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06bridge: Propagate vlan add failure to userElad Raz1-1/+10
Disallow adding interfaces to a bridge when vlan filtering operation failed. Send the failure code to the user. Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: sched: fix missing free per cpu on qstatsJohn Fastabend1-1/+3
When a qdisc is using per cpu stats (currently just the ingress qdisc) only the bstats are being freed. This also free's the qstats. Fixes: b0ab6f92752b9f9d8 ("net: sched: enable per cpu qstats") Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06ARM: net: bpf: fix zero right shiftRabin Vincent1-1/+2
The LSR instruction cannot be used to perform a zero right shift since a 0 as the immediate value (imm5) in the LSR instruction encoding means that a shift of 32 is perfomed. See DecodeIMMShift() in the ARM ARM. Make the JIT skip generation of the LSR if a zero-shift is requested. This was found using american fuzzy lop. Signed-off-by: Rabin Vincent <rabin@rab.in> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06soreuseport: change consume_skb to kfree_skb in error caseCraig Gallek1-1/+1
Fixes: 538950a1b752 ("soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF") Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Craig Gallek <kraig@google.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06soreuseport: pass skb to secondary UDP socket lookupCraig Gallek3-8/+59
This socket-lookup path did not pass along the skb in question in my original BPF-based socket selection patch. The skb in the udpN_lib_lookup2 path can be used for BPF-based socket selection just like it is in the 'traditional' udpN_lib_lookup path. udpN_lib_lookup2 kicks in when there are greater than 10 sockets in the same hlist slot. Coincidentally, I chose 10 sockets per reuseport group in my functional test, so the lookup2 path was not excersised. This adds an additional set of tests with 20 sockets. Fixes: 538950a1b752 ("soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF") Fixes: 3ca8e4029969 ("soreuseport: BPF selection functional test") Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Craig Gallek <kraig@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-066pack: fix free memory scribblesOne Thousand Gnomes1-0/+6
commit acf673a3187edf72068ee2f92f4dc47d66baed47 fixed a user triggerable free memory scribble but in doing so replaced it with a different one that allows the user to control the data and scribble even more. sixpack_close is called by the tty layer in tty context. The tty context is protected by sp_get() and sp_put(). However network layer activity via sp_xmit() is not protected this way. We must therefore stop the queue otherwise the user gets to dump a buffer mostly of their choice into freed kernel pages. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06mlxsw: pci: Adjust value of CPU egress traffic classIdo Schimmel1-1/+1
During initialization, when creating the send descriptor queues (SDQs), we specify the CPU egress traffic class of each SDQ. The maximum number of classes of this type is different in the two ASICs supported by this PCI driver. New firmware versions check this value is set correctly, which causes errors on the Spectrum ASIC, as its max exposed egress traffic class is lower than 7. Solve this by setting this field to 3, which is an acceptable value for both ASICs. Note that we currently do not expose the QoS capabilities of the ASICs, so setting this to an hardcoded value is OK for now. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: filter: make JITs zero A for SKF_AD_ALU_XOR_XRabin Vincent5-56/+25
The SKF_AD_ALU_XOR_X ancillary is not like the other ancillary data instructions since it XORs A with X while all the others replace A with some loaded value. All the BPF JITs fail to clear A if this is used as the first instruction in a filter. This was found using american fuzzy lop. Add a helper to determine if A needs to be cleared given the first instruction in a filter, and use this in the JITs. Except for ARM, the rest have only been compile-tested. Fixes: 3480593131e0 ("net: filter: get rid of BPF_S_* enum") Signed-off-by: Rabin Vincent <rabin@rab.in> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06Merge tag 'wireless-drivers-next-for-davem-2016-01-05' of ↵David S. Miller184-1884/+3889
git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Kalle Valo says: ==================== brcfmac * fix IBSS which got broken over time * new USB id for bcm43242 dongle * arp offload configuration through inet notifier ath9k * add random number generator support (CONFIG_ATH9K_HWRNG) iwlwifi * Make scan parameters low latency aware * Fix in the NL80211_FEATURE_FULL_AP_CLIENT_STATE state case * Fix enable injection mode (Chaya Rachel) * Various cleanups (Dan / Julia / myself) * Allow to stay more time on popular channels (David Spinadel) * Bug fixes for D0i3 (Eliad / Luca) * Fixes for GO uAPSD (myself) * Start of TSO support (myself) * Rate control bug fixes (Eyal / Gregory) * Start the work on 9000 devices (Johannes / Sara / Oren) * Start the work on a new Tx queue allocation model (Liad) * Debug infrastructure enhancements (Golan) mwifiex * add a debugfs file for chip reset * advertise SMS4 cipher suite * increase ap and station interface limit to 3 * enable MSI support on newer pcie devices (8897 onwards) rtlwifi * fix lots of module parameter usage ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: hns: avoid uninitialized variable warning:Arnd Bergmann1-25/+22
gcc fails to see that the use of the 'last_offset' variable in hns_nic_reuse_page() is used correctly and issues a bogus warning: drivers/net/ethernet/hisilicon/hns/hns_enet.c: In function 'hns_nic_reuse_page': drivers/net/ethernet/hisilicon/hns/hns_enet.c:541:6: warning: 'last_offset' may be used uninitialized in this function [-Wmaybe-uninitialized] This simplifies the function to make it more obvious what is going on to both readers and compilers, which makes the warning go away. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05inet: kill unused skb_free opFlorian Westphal5-13/+1
The only user was removed in commit 029f7f3b8701cc7a ("netfilter: ipv6: nf_defrag: avoid/free clone operations"). Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05bridge: Only call /sbin/bridge-stp for the initial network namespaceHannes Frederic Sowa1-1/+4
[I stole this patch from Eric Biederman. He wrote:] > There is no defined mechanism to pass network namespace information > into /sbin/bridge-stp therefore don't even try to invoke it except > for bridge devices in the initial network namespace. > > It is possible for unprivileged users to cause /sbin/bridge-stp to be > invoked for any network device name which if /sbin/bridge-stp does not > guard against unreasonable arguments or being invoked twice on the > same network device could cause problems. [Hannes: changed patch using netns_eq] Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05include/uapi/linux/sockios.h: mark SIOCRTMSG unusedxypron.glpk@gmx.de1-1/+1
IOCTL SIOCRTMSG does nothing but return EINVAL. So comment it as unused. SIOCRTMSG is only used in: * net/ipv4/af_inet.c * include/uapi/linux/sockios.h inet_ioctl calls ip_rt_ioctl. ip_rt_ioctl only handles SIOCADDRT and SIOCDELRT and returns -EINVAL otherwise. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05Merge tag 'trace-v4.4-rc4-3' of ↵Linus Torvalds2-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "Two more fixes: 1. The recordmcount change had an output that used sprintf() (incorrectly) when it should have been a fprintf() to stderr. 2. The printk_formats file could crash if someone added a trace_printk() in the core kernel, and also added one in a module. This does not affect production kernels. Only kernels where developers add trace_printk() for debugging can crash" * tag 'trace-v4.4-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Fix setting of start_index in find_next() ftrace/scripts: Fix incorrect use of sprintf in recordmcount
2016-01-05Merge branch 'stable' of ↵Linus Torvalds2-9/+10
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull tile bugfix from Chris Metcalf: "This fixes a bug that Sudip's buildbot found for tilepro allmodconfig. I've tagged it for stable only back to 3.19, which was when most of the other affected architectures added their support for working around this issue" * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: tile: provide CONFIG_PAGE_SIZE_64KB etc for tilepro
2016-01-05Merge branch 'mlx5e-tstamp'David S. Miller12-42/+467
Saeed Mahameed says: ==================== Introduce mlx5 ethernet timestamping This patch series introduces the support for ConnectX-4 timestamping and the PTP kernel interface. Changes from V2: net/mlx5_core: Introduce access function to read internal_timer - Remove one line function - Change function name net/mlx5e: Add HW timestamping (TS) support: - Data path performance optimization (caching tstamp struct in rq,sq) - Change read/write_lock_irqsave to read/write_lock - Move ioctl functions to en_clock file - Changed overflow start algorithm according to comments from Richard - Move timestamp init/cleanup to open/close ndos. In details: 1st patch prevents the driver from modifying skb->data and SKB CB in device xmit function. 2nd patch adds the needed low level helpers for: - Fetching the hardware clock (hardware internal timer) - Parsing CQEs timestamps - Device frequency capability 3rd patch adds new en_clock.c file that handles all needed timestamping operations: - Internal clock structure initialization and other helper functions - Added the needed ioctl for setting/getting the current timestamping configuration. - used this configuration in RX/TX data path to fill the SKB with the timestamp. 4th patch Introduces PTP (PHC) support. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05net/mlx5e: Add PTP Hardware Clock (PHC) supportEran Ben Elisha4-1/+106
Add a PHC support to the mlx5_en driver. Use reader/writer spinlocks to protect the timecounter since every packet received needs to call timecounter_cycle2time() when timestamping is enabled. This can become a performance bottleneck with RSS and multiple receive queues if normal spinlocks are used. The driver has been tested with both Documentation/ptp/testptp and the linuxptp project (http://linuxptp.sourceforge.net/) on a Mellanox ConnectX-4 card. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05net/mlx5e: Add HW timestamping (TS) supportEran Ben Elisha7-2/+279
Add support for enable/disable HW timestamping for incoming and/or outgoing packets. To enable/disable HW timestamping appropriate ioctl should be used. Currently HWTSTAMP_FILTER_ALL/NONE and HWTSAMP_TX_ON/OFF only are supported. Make all relevant changes in RX/TX flows to consider TS request and plant HW timestamps into relevant structures. Add internal clock for converting hardware timestamp to nanoseconds. In addition, add a service task to catch internal clock overflow, to make sure timestamping is accurate. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05net/mlx5_core: Introduce access function to read internal timerEran Ben Elisha4-6/+34
A preparation step which adds support for reading the hardware internal timer and the hardware timestamping from the CQE. In addition, advertize device_frequency_khz HCA capability. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05net/mlx5e: Do not modify the TX SKBAchiad Shochat3-34/+49
If the SKB is cloned, or has an elevated users count, someone else can be looking at it at the same time. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-05Merge branch 'sctp-transport-rhashtable'David S. Miller9-315/+331
Xin Long says: ==================== sctp: use transport hashtable to replace association's with rhashtable for telecom center, the usual case is that a server is connected by thousands of clients. but if the server with only one enpoint(udp style) use the same sport and dport to communicate with every clients, and every assoc in server will be hashed in the same chain of global assoc hashtable due to currently we choose dport and sport as the hash key. when a packet is received, sctp_rcv try to find the assoc with sport and dport, since that chain is too long to find it fast, it make the performance turn to very low, some test data is as follow: in server: $./ss [start a udp style server there] in client: $./cc [start 2500 sockets to connect server with same port and different ip, and use one of them to send data to server] ===== test on net-next -- perf top server: 55.73% [kernel] [k] sctp_assoc_is_match 6.80% [kernel] [k] sctp_assoc_lookup_paddr 4.81% [kernel] [k] sctp_v4_cmp_addr 3.12% [kernel] [k] _raw_spin_unlock_irqrestore 1.94% [kernel] [k] sctp_cmp_addr_exact client: 46.01% [kernel] [k] sctp_endpoint_lookup_assoc 5.55% libc-2.17.so [.] __libc_calloc 5.39% libc-2.17.so [.] _int_free 3.92% libc-2.17.so [.] _int_malloc 3.23% [kernel] [k] __memset -- spent time time is 487s, send pkt is 10000000 we need to change the way to calculate the hash key, to use lport + rport + paddr as the hash key can avoid this issue. besides, this patchset will use transport hashtable to replace association hashtable to lookup with rhashtable api. get transport first then get association by t->asoc. and also it will make tcp style work better. ===== test with this patchset: -- perf top server: 15.98% [kernel] [k] _raw_spin_unlock_irqrestore 9.92% [kernel] [k] __pv_queued_spin_lock_slowpath 7.22% [kernel] [k] copy_user_generic_string 2.38% libpthread-2.17.so [.] __recvmsg_nocancel 1.88% [kernel] [k] sctp_recvmsg client: 11.90% [kernel] [k] sctp_hash_cmp 8.52% [kernel] [k] rht_deferred_worker 4.94% [kernel] [k] __pv_queued_spin_lock_slowpath 3.95% [kernel] [k] sctp_bind_addr_match 2.49% [kernel] [k] __memset -- spent time time is 22s, send pkt is 10000000 ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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