- 09 Jan, 2017 40 commits
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Ursula Braun authored
move RMBE data into user space buffer and update managing cursors Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ursula Braun authored
copy data to kernel send buffer, and trigger RDMA write Signed-off-by:
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Ursula Braun authored
send and receive CDC messages (via IB message send and CQE) Signed-off-by:
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Ursula Braun authored
send and receive LLC messages CONFIRM_LINK (via IB message send and CQE) Signed-off-by:
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Ursula Braun authored
Prepare the link for RDMA transport: Create a queue pair (QP) and move it into the state Ready-To-Receive (RTR). Signed-off-by:
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Ursula Braun authored
The base containers for RDMA transport are work requests and completion queue entries processed through Infiniband verbs: * allocate and initialize these areas * map these areas to DMA * implement the basic communication consisting of work request posting and receival of completion queue events Signed-off-by:
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Ursula Braun authored
* allocate data RMB memory for sending and receiving * size depends on the maximum socket send and receive buffers * allocated RMBs are kept during life time of the owning link group * map the allocated RMBs to DMA Signed-off-by:
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Ursula Braun authored
* create smc_connection for SMC-sockets * determine suitable link group for a connection * create a new link group if necessary Signed-off-by:
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Ursula Braun authored
* CLC (Connection Layer Control) handshake Signed-off-by:
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Thomas Richter authored
Connection creation with SMC-R starts through an internal TCP-connection. The Ethernet interface for this TCP-connection is not restricted to the Ethernet interface of a RoCE device. Any existing Ethernet interface belonging to the same physical net can be used, as long as there is a defined relation between the Ethernet interface and some RoCE devices. This relation is defined with the help of an identification string called "Physical Net ID" or short "pnet ID". Information about defined pnet IDs and their related Ethernet interfaces and RoCE devices is stored in the SMC-R pnet table. A pnet table entry consists of the identifying pnet ID and the associated network and IB device. This patch adds pnet table configuration support using the generic netlink message interface referring to network and IB device by their names. Commands exist to add, delete, and display pnet table entries, and to flush or display the entire pnet table. There are cross-checks to verify whether the ethernet interfaces or infiniband devices really exist in the system. If either device is not available, the pnet ID entry is not created. Loss of network devices and IB devices is also monitored; a pnet ID entry is removed when an associated network or IB device is removed. Signed-off-by:
Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by:
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Ursula Braun authored
* create a list of SMC IB-devices Signed-off-by:
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Ursula Braun authored
* enable smc module loading and unloading * register new socket family * basic smc socket creation and deletion * use backing TCP socket to run CLC (Connection Layer Control) handshake of SMC protocol * Setup for infiniband traffic is implemented in follow-on patches. For now fallback to TCP socket is always used. Signed-off-by:
Utz Bacher <utz.bacher@de.ibm.com> Signed-off-by:
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Ursula Braun authored
Direct call of tcp_set_keepalive() function from protocol-agnostic sock_setsockopt() function in net/core/sock.c violates network layering. And newly introduced protocol (SMC-R) will need its own keepalive function. Therefore, add "keepalive" function pointer to "struct proto", and call it from sock_setsockopt() via this pointer. Signed-off-by:
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David S. Miller authored
Niklas Söderlund says: ==================== sh_eth: add wake-on-lan support via magic packet This series adds support for Wake-on-Lan using Magic Packet for a few models of the sh_eth driver. Patch 1/6 fix a naming error, patch 2/6 adds generic support to control and support WoL while patches 3/6 - 6/6 enable different models. Based ontop of net-next master. Changes since v2. - Fix bookkeeping for "active_count" and "event_count" reported in /sys/kernel/debug/wakeup_sources. Thanks Geert for noticing this. - Add new patch 1/6 which corrects the name of ECMR_MPDE bit, suggested by Sergei. - s/sh7743/sh7734/ in patch 5/6. Thanks Geert for spotting this. - Spelling improvements suggested by Sergei and Geert. - Add Tested-by to 3/6 and 4/6. Changes since v1. - Split generic WoL functionality and device enablement to different patches. - Enable more devices then Gen2 after feedback from Geert and datasheets. - Do not set mdp->irq_enabled = false and remove specific MagicPacket interrupt clearing, instead let sh_eth_error() clear the interrupt as for other EMAC interrupts, thanks Sergei for the suggestion. - Use the original return logic in sh_eth_resume(). - Moved sh_eth_private variable *clk to top of data structure to avoid possible gaps due to alignment restrictions. - Make wol_enabled in sh_eth_private part of the already existing bitfield instead of a bool. - Do not initiate mdp->wol_enabled to 0, the struct is kzalloc'ed so it's already set to 0. ==================== Signed-off-by: -
Niklas Söderlund authored
This is based on public datasheet for sh7763 which shows it has the same behavior and registers for WoL as other versions of sh_eth. Signed-off-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by:
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Niklas Söderlund authored
This is based on public datasheet for sh7734 which shows it has the same behavior and registers for WoL as other versions of sh_eth. Signed-off-by:
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Niklas Söderlund authored
Geert Uytterhoeven reported WoL worked on his Armadillo board. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Niklas Söderlund authored
Tested on Gen2 r8a7791/Koelsch. Signed-off-by:
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Niklas Söderlund authored
Add generic functionality to support Wake-on-LAN using MagicPacket which are supported by at least a few versions of sh_eth. Only add functionality for WoL, no specific sh_eth versions are marked to support WoL yet. WoL is enabled in the suspend callback by setting MagicPacket detection and disabling all interrupts expect MagicPacket. In the resume path the driver needs to reset the hardware to rearm the WoL logic, this prevents the driver from simply restoring the registers and to take advantage of that sh_eth was not suspended to reduce resume time. To reset the hardware the driver closes and reopens the device just like it would do in a normal suspend/resume scenario without WoL enabled, but it both closes and opens the device in the resume callback since the device needs to be open for WoL to work. One quirk needed for WoL is that the module clock needs to be prevented from being switched off by Runtime PM. To keep the clock alive the suspend callback need to call clk_enable() directly to increase the usage count of the clock. Then when Runtime PM decreases the clock usage count it won't reach 0 and be switched off. Signed-off-by:
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Niklas Söderlund authored
This bit was wrongly named due to a typo, Sergei checked the SH7734/63 manuals and this bit should be named MPDE. Suggested-by:
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
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David S. Miller authored
Jesper Dangaard Brouer says: ==================== net: optimize ICMP-reply code path This patchset is optimizing the ICMP-reply code path, for ICMP packets that gets rate limited. A remote party can easily trigger this code path by sending packets to port number with no listening service. Generally the patchset moves the sysctl_icmp_msgs_per_sec ratelimit checking to earlier in the code path and removes an allocation. Use-case: The specific case I experienced this being a bottleneck is, sending UDP packets to a port with no listener, which obviously result in kernel replying with ICMP Destination Unreachable (type:3), Port Unreachable (code:3), which cause the bottleneck. After Eric and Paolo optimized the UDP socket code, the kernels PPS processing capabilities is lower for no-listen ports, than normal UDP sockets. This is bad for capacity planning when restarting a service. UDP no-listen benchmark 8xCPUs using pktgen_sample04_many_flows.sh: Baseline: 6.6 Mpps Patch: 14.7 Mpps Driver mlx5 at 50Gbit/s. ==================== Signed-off-by: -
Jesper Dangaard Brouer authored
It is possible to avoid the atomic operation in icmp{v6,}_xmit_lock, by checking the sysctl_icmp_msgs_per_sec ratelimit before these calls, as pointed out by Eric Dumazet, but the BH disabled state must be correct. The icmp_global_allow() call states it must be called with BH disabled. This protection was given by the calls icmp_xmit_lock and icmpv6_xmit_lock. Thus, split out local_bh_disable/enable from these functions and maintain it explicitly at callers. Suggested-by:Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
Jesper Dangaard Brouer <brouer@redhat.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Jesper Dangaard Brouer authored
This patch split the global and per (inet)peer ICMP-reply limiter code, and moves the global limit check to earlier in the packet processing path. Thus, avoid spending cycles on ICMP replies that gets limited/suppressed anyhow. The global ICMP rate limiter icmp_global_allow() is a good solution, it just happens too late in the process. The kernel goes through the full route lookup (return path) for the ICMP message, before taking the rate limit decision of not sending the ICMP reply. Details: The kernels global rate limiter for ICMP messages got added in commit 4cdf507d ("icmp: add a global rate limitation"). It is a token bucket limiter with a global lock. It brilliantly avoids locking congestion by only updating when 20ms (HZ/50) were elapsed. It can then avoids taking lock when credit is exhausted (when under pressure) and time constraint for refill is not yet meet. Signed-off-by:
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Jesper Dangaard Brouer authored
This reverts commit 9a99d4a5 ("icmp: avoid allocating large struct on stack"), because struct icmp_bxm no really a large struct, and allocating and free of this small 112 bytes hurts performance. Fixes: 9a99d4a5 ("icmp: avoid allocating large struct on stack") Signed-off-by:
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David S. Miller authored
Merge tag 'rxrpc-rewrite-20170109' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs David Howells says: ==================== afs: Refcount afs_call struct These patches provide some tracepoints for AFS and fix a potential leak by adding refcounting to the afs_call struct. The patches are: (1) Add some tracepoints for logging incoming calls and monitoring notifications from AF_RXRPC and data reception. (2) Get rid of afs_wait_mode as it didn't turn out to be as useful as initially expected. It can be brought back later if needed. This clears some stuff out that I don't then need to fix up in (4). (3) Allow listen(..., 0) to be used to disable listening. This makes shutting down the AFS cache manager server in the kernel much easier and the accounting simpler as we can then be sure that (a) all preallocated afs_call structs are relesed and (b) no new incoming calls are going to be started. For the moment, listening cannot be reenabled. (4) Add refcounting to the afs_call struct to fix a potential multiple release detected by static checking and add a tracepoint to follow the lifecycle of afs_call objects. ==================== Signed-off-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: dsa: Make dsa_switch_ops const This patch series allows us to annotate dsa_switch_ops with a const qualifier. ==================== Signed-off-by: -
Florian Fainelli authored
Now that we have properly encapsulated and made drivers utilize exported functions, we can switch dsa_switch_ops to be a annotated with const. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Florian Fainelli authored
In preparation for making struct dsa_switch_ops const, encapsulate it within a dsa_switch_driver which has a list pointer and a pointer to dsa_switch_ops. This allows us to take the list_head pointer out of dsa_switch_ops, which is written to by {un,}register_switch_driver. Signed-off-by: -
Florian Fainelli authored
Utilize the b53 exported functions to fill our bcm_sf2_ops structure, also making it clear what we utilize and what we specifically override. Signed-off-by:
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Florian Fainelli authored
In preparation for making dsa_switch_ops const, export b53 operations utilized by other drivers such as bcm_sf2. Signed-off-by:
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David S. Miller authored
Sergei Shtylyov says: ==================== sh_eth: "intgelligent checksum" related cleanups Here's a set of 2 patches against DaveM's 'net.git' repo, as they are based on a couple patches merged there recently; however, the patches are destined for 'net-next.git' (once 'net.git' gets merged there next time). I'm cleaning up the "intelligent checksum" related code (however, the driver only disables this feature for now, theres's no proper offload supprt yet). ==================== Signed-off-by: -
Sergei Shtylyov authored
The 'struct sh_eth_cpu_data' field indicating the "intelligent checksum" support was misnamed 'hw_crc' -- rename it to 'hw_checksum'. Signed-off-by:
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Sergei Shtylyov authored
After checking all the available manuals, I have enough information to conclude that the 'shift_rd0' flag is only relevant for the Ether cores supporting so called "intelligent checksum" (and hence having CSMR) which is indicated by the 'hw_crc' flag. Since all the relevant SoCs now have both these flags set, we can at last get rid of the former flag... Signed-off-by:
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Zefir Kurtisi authored
While in RUNNING state, phy_state_machine() checks for link changes by comparing phydev->link before and after calling phy_read_status(). This works as long as it is guaranteed that phydev->link is never changed outside the phy_state_machine(). If in some setups this happens, it causes the state machine to miss a link loss and remain RUNNING despite phydev->link being 0. This has been observed running a dsa setup with a process continuously polling the link states over ethtool each second (SNMPD RFC-1213 agent). Disconnecting the link on a phy followed by a ETHTOOL_GSET causes dsa_slave_get_settings() / dsa_slave_get_link_ksettings() to call phy_read_status() and with that modify the link status - and with that bricking the phy state machine. This patch adds a fail-safe check while in RUNNING, which causes to move to CHANGELINK when the link is gone and we are still RUNNING. Signed-off-by:
Zefir Kurtisi <zefir.kurtisi@neratec.com> Reviewed-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Fix dumping of nft_quota entries, from Pablo Neira Ayuso. 2) Fix out of bounds access in nf_tables discovered by KASAN, from Florian Westphal. 3) Fix IRQ enabling in dp83867 driver, from Grygorii Strashko. 4) Fix unicast filtering in be2net driver, from Ivan Vecera. 5) tg3_get_stats64() can race with driver close and ethtool reconfigurations, fix from Michael Chan. 6) Fix error handling when pass limit is reached in bpf code gen on x86. From Daniel Borkmann. 7) Don't clobber switch ops and use proper MDIO nested reads and writes in bcm_sf2 driver, from Florian Fainelli. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (21 commits) net: dsa: bcm_sf2: Utilize nested MDIO read/write net: dsa: bcm_sf2: Do not clobber b53_switch_ops net: stmmac: fix maxmtu assignment to be within valid range bpf: change back to orig prog on too many passes tg3: Fix race condition in tg3_get_stats64(). be2net: fix unicast list filling be2net: fix accesses to unicast list netlabel: add CALIPSO to the list of built-in protocols vti6: fix device register to report IFLA_INFO_KIND net: phy: dp83867: fix irq generation amd-xgbe: Fix IRQ processing when running in single IRQ mode sh_eth: R8A7740 supports packet shecksumming sh_eth: fix EESIPR values for SH77{34|63} r8169: fix the typo in the comment nl80211: fix sched scan netlink socket owner destruction bridge: netfilter: Fix dropping packets that moving through bridge interface netfilter: ipt_CLUSTERIP: check duplicate config when initializing netfilter: nft_payload: mangle ckecksum if NFT_PAYLOAD_L4CSUM_PSEUDOHDR is set netfilter: nf_tables: fix oob access netfilter: nft_queue: use raw_smp_processor_id() ... -
David S. Miller authored
Joao Pinto says: ==================== adding new glue driver dwmac-dwc-qos-eth This patch set contains the porting of the synopsys/dwc_eth_qos.c driver to the stmmac structure. This operation resulted in the creation of a new platform glue driver called dwmac-dwc-qos-eth which was based in the dwc_eth_qos as is. dwmac-dwc-qos-eth inherited dwc_eth_qos DT bindings, to assure that current and old users can continue to use it as before. We can see this driver as being deprecated, since all new development will be done in stmmac. Please check each patch for implementation details. ==================== Tested-by:
Niklas Cassel <niklas.cassel@axis.com> Reviewed-by:
Lars Persson <larper@axis.com> Acked-by:
Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by:
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jpinto authored
This patch adds a new glue driver called dwmac-dwc-qos-eth which was based in the dwc_eth_qos as is. To assure retro-compatibility a slight tweak was also added to stmmac_platform. Signed-off-by:
Joao Pinto <jpinto@synopsys.com> Tested-by:
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jpinto authored
This patch moves stmmac_clk, pclk, clk_ptp_ref and stmmac_rst to the plat_stmmacenet_data structure. It also moves these platform variables initialization to stmmac_platform. This was done for two reasons: a) If PCI is used, platform related code is being executed in stmmac_main resulting in warnings that have no sense and conceptually was not right b) stmmac as a synopsys reference ethernet driver stack will be hosting more and more drivers to its structure like synopsys/dwc_eth_qos.c. These drivers have their own DT bindings that are not compatible with stmmac's. One of the most important are the clock names, and so they need to be parsed in the glue logic and initialized there, and that is the main reason why the clocks were passed to the platform structure. Signed-off-by:
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jpinto authored
This patch adds a new parameter to the stmmac DT: snps,en-tx-lpi-clockgating. It was ported from synopsys/dwc_eth_qos.c and it is useful if lpi tx clock gating is needed by stmmac users also. Signed-off-by:
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