- 30 Jul, 2017 1 commit
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Vidya Sagar Ravipati authored
Forward Error Correction (FEC) modes i.e Base-R and Reed-Solomon modes are introduced in 25G/40G/100G standards for providing good BER at high speeds. Various networking devices which support 25G/40G/100G provides ability to manage supported FEC modes and the lack of FEC encoding control and reporting today is a source for interoperability issues for many vendors. FEC capability as well as specific FEC mode i.e. Base-R or RS modes can be requested or advertised through bits D44:47 of base link codeword. This patch set intends to provide option under ethtool to manage and report FEC encoding settings for networking devices as per IEEE 802.3 bj, bm and by specs. set-fec/show-fec option(s) are designed to provide control and report the FEC encoding on the link. SET FEC option: root@tor: ethtool --set-fec swp1 encoding [off | RS | BaseR | auto] Encoding: Types of encoding Off : Turning off any encoding RS : enforcing RS-FEC encoding on supported speeds BaseR : enforcing Base R encoding on supported speeds Auto : IEEE defaults for the speed/medium combination Here are a few examples of what we would expect if encoding=auto: - if autoneg is on, we are expecting FEC to be negotiated as on or off as long as protocol supports it - if the hardware is capable of detecting the FEC encoding on it's receiver it will reconfigure its encoder to match - in absence of the above, the configuration would be set to IEEE defaults. >From our understanding , this is essentially what most hardware/driver combinations are doing today in the absence of a way for users to control the behavior. SHOW FEC option: root@tor: ethtool --show-fec swp1 FEC parameters for swp1: Active FEC encodings: RS Configured FEC encodings: RS | BaseR ETHTOOL DEVNAME output modification: ethtool devname output: root@tor:~# ethtool swp1 Settings for swp1: root@hpe-7712-03:~# ethtool swp18 Settings for swp18: Supported ports: [ FIBRE ] Supported link modes: 40000baseCR4/Full 40000baseSR4/Full 40000baseLR4/Full 100000baseSR4/Full 100000baseCR4/Full 100000baseLR4_ER4/Full Supported pause frame use: No Supports auto-negotiation: Yes Supported FEC modes: [RS | BaseR | None | Not reported] Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: [RS | BaseR | None | Not reported] <<<< One or more FEC modes Speed: 100000Mb/s Duplex: Full Port: FIBRE PHYAD: 106 Transceiver: internal Auto-negotiation: off Link detected: yes This patch includes following changes a) New ETHTOOL_SFECPARAM/SFECPARAM API, handled by the new get_fecparam/set_fecparam callbacks, provides support for configuration of forward error correction modes. b) Link mode bits for FEC modes i.e. None (No FEC mode), RS, BaseR/FC are defined so that users can configure these fec modes for supported and advertising fields as part of link autonegotiation. Signed-off-by:Vidya Sagar Ravipati <vidya.chowdary@gmail.com> Signed-off-by:
Dustin Byford <dustin@cumulusnetworks.com> Signed-off-by:
Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 29 Jul, 2017 32 commits
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David S. Miller authored
Stephen Hemminger says: ==================== netvsc: minor fixes and optimization This is a subset of earlier submission with a few more fixes found during testing. The are two small optimizations, one is to better manage the receive completion ring, and the other is removing one unneeded level of indirection. Will submit the improved VF support and buffer sizing in a later patch so they get more review. ==================== Signed-off-by: -
stephen hemminger authored
Latency improvement related to NAPI conversion. If all packets are processed from receive ring then need to signal host. Signed-off-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
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stephen hemminger authored
If setting receive buffer fails, the error unwind would cause kernel panic because it was not correctly doing RCU and NAPI unwind. RCU'd pointer needs to be reset to NULL, and NAPI needs to be disabled not deleted. Signed-off-by:
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stephen hemminger authored
Optimize how receive completion ring are managed. * Allocate only as many slots as needed for all buffers from host * Allocate before setting up sub channel for better error detection * Don't need to keep copy of initial receive section message * Precompute the watermark for when receive flushing is needed * Replace division with conditional test * Replace atomic per-device variable with per-channel check. * Handle corner case where receive completion send fails if ring buffer to host is full. Signed-off-by: -
stephen hemminger authored
The internal API was passing struct hv_page_buffer ** when only simple struct hv_page_buffer * was necessary for passing an array. Signed-off-by:
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stephen hemminger authored
Using %p to print pointer to packet meta-data doesn't give any good info, and exposes kernel memory offsets. Signed-off-by:
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stephen hemminger authored
This includes a bunch of fixups for issues reported by lockdep. * ethtool routines can assume RTNL * send is done with RCU lock (and BH disable) * avoid refetching internal device struct (netvsc) instead pass it as a parameter. Signed-off-by: -
stephen hemminger authored
The error and normal case got swapped. Signed-off-by:
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Felix Manlunas authored
Bump up driver version to match newer NIC firmware. Also update nic_rx_stats (a struct common to host driver and firmware) by adding a new field: fw_total_fwd_bytes. Signed-off-by:
Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by:
Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by:
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Sathya Perla authored
bnxt_en depends on MAY_USE_DEVLINK; this is used to force bnxt_en to be =m when DEVLINK is =m. Now, bnxt_re selects bnxt_en. Unless bnxt_re also explicitly calls out dependency on MAY_USE_DEVLINK, Kconfig does not force bnxt_re to be =m when DEVLINK is =m, causing the following error: drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.o: In function `bnxt_dl_register': bnxt_vfr.c:(.text+0x1440): undefined reference to `devlink_alloc' bnxt_vfr.c:(.text+0x14c0): undefined reference to `devlink_register' bnxt_vfr.c:(.text+0x14e0): undefined reference to `devlink_free' drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.o: In function `bnxt_dl_unregister': bnxt_vfr.c:(.text+0x1534): undefined reference to `devlink_unregister' bnxt_vfr.c:(.text+0x153c): undefined reference to `devlink_free' Fix this by adding MAY_USE_DEVLINK dependency in bnxt_re. Fixes: 4ab0c6a8 ("bnxt_en: add support to enable VF-representors") Suggested-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Sathya Perla <sathya.perla@broadcom.com> Signed-off-by:
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John Fastabend authored
Apparently through one of my revisions of the initial patches series I lost the devmap test. We can add more testing later but for now lets fix the simple one we have. Fixes: 546ac1ff "bpf: add devmap, a map for storing net device references" Reported-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by:
John Fastabend <john.fastabend@gmail.com> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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David S. Miller authored
SZ Lin says: ==================== net: moxa: Fix style issues This patch set fixs the WARNINGs found by the checkpatch.pl tool ==================== Signed-off-by: -
SZ Lin authored
This patch fixes all checkpatch occurences of "CHECK: spaces preferred around that '{+,-}' (ctx:VxV)" in moxart_ether code. Signed-off-by:SZ Lin <sz.lin@moxa.com> Signed-off-by:
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SZ Lin authored
Signed-off-by:
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SZ Lin authored
No space is necessary after a cast This warning is found using checkpatch.pl Signed-off-by:
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SZ Lin authored
Fixed coding style for null comparisons in moxart_ether driver to be more consistent with the rest of the kernel coding style Signed-off-by:
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SZ Lin authored
Use 'unsigned int' instead of 'unsigned' This warning is found using checkpatch.pl Signed-off-by:
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SZ Lin authored
Remove unnecessary braces from single-line if statement This warning is found using checkpatch.pl Signed-off-by:
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David S. Miller authored
Ursula Braun says: ==================== net/smc: get rid of unsafe_global_rkey The smc code uses the unsafe_global_rkey, exposing all memory for remote reads and writes once a connection is established. Here is now a patch series to get rid of unsafe_global_rkey usage. Main idea is to switch to SG-logic and separate memory regions for RMBs. ==================== Signed-off-by: -
Ursula Braun authored
Usage of send buffer "sndbuf" is synced (a) before filling sndbuf for cpu access (b) after filling sndbuf for device access Usage of receive buffer "RMB" is synced (a) before reading RMB content for cpu access (b) after reading RMB content for device access Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
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Ursula Braun authored
Split function __smc_buf_create() for better readability. Signed-off-by:
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Ursula Braun authored
Creation and deletion of SMC receive and send buffers shares a high amount of common code . This patch introduces common functions to get rid of duplicate code. Signed-off-by:
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Ursula Braun authored
SMC send buffers are processed the same way as RMBs. Since RMBs have been converted to sg-logic, do the same for send buffers. Signed-off-by:
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Ursula Braun authored
Now separate memory regions are created and registered for separate RMBs. The unsafe_global_rkey of the protection domain is no longer used. Thus the exposing memory warning can be removed. Signed-off-by:
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Ursula Braun authored
A memory region created for a new RMB must be registered explicitly, before the peer can make use of it for remote DMA transfer. Signed-off-by:
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Ursula Braun authored
SMC currently uses the unsafe_global_rkey of the protection domain, which exposes all memory for remote reads and writes once a connection is established. This patch introduces separate memory regions with separate rkeys for every RMB. Now the unsafe_global_rkey of the protection domain is no longer needed. Signed-off-by:
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Ursula Braun authored
The follow-on patch makes use of ib_map_mr_sg() when introducing separate memory regions for RMBs. This function is based on scatterlists; thus this patch introduces scatterlists for RMBs. Signed-off-by:
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Ursula Braun authored
Initiate the coming rework of SMC buffer handling with this small code cleanup. No functional changes here. Signed-off-by:
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Ursula Braun authored
If a link group for a new server connection exists already, the mutex serializing the determination of link groups is given up early. The coming registration of memory regions benefits from the serialization as well, if the mutex is held till connection creation is finished. This patch postpones the unlocking of the link group creation mutex. Signed-off-by:
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David S. Miller authored
Julia Lawall says: ==================== constify inet6_protocol structures The inet6_protocol structure is only passed as the first argument to inet6_add_protocol or inet6_del_protocol, both of which are declared as const. Thus the inet6_protocol structure itself can be const. Done with the help of Coccinelle. // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct inet6_protocol i@p = { ... }; @ok1@ identifier r.i; expression e1; position p; @@ \(inet6_add_protocol\|inet6_del_protocol\)(&i@p,...) @bad@ position p != {r.p,ok1.p}; identifier r.i; struct inet6_protocol e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct inet6_protocol i = { ... }; // </smpl> ==================== Signed-off-by: -
Julia Lawall authored
The inet6_protocol structure is only passed as the first argument to inet6_add_protocol or inet6_del_protocol, both of which are declared as const. Thus the inet6_protocol structure itself can be const. Also drop __read_mostly on the newly const structure. Done with the help of Coccinelle. Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by:
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Julia Lawall authored
The inet6_protocol structure is only passed as the first argument to inet6_add_protocol or inet6_del_protocol, both of which are declared as const. Thus the inet6_protocol structure itself can be const. Also drop __read_mostly where present on the newly const structures. Done with the help of Coccinelle. Signed-off-by:
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- 28 Jul, 2017 7 commits
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David S. Miller authored
Rick Farrington says: ==================== liquidio: standardization and cleanup This patchset corrects some non-standard macro usage. 1. Replaced custom MIN macro with use of standard 'min_t'. 2. Removed cryptic and misleading macro 'CAST_ULL'. change log: V1 -> V2: 1. Add driver cleanup of macro 'CAST_ULL'. V2 -> V3: 1. Remove extra parentheses from previous usage of macro 'CAST_ULL'. ==================== Signed-off-by: -
Rick Farrington authored
Signed-off-by:
Rick Farrington <ricardo.farrington@cavium.com> Signed-off-by:
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Rick Farrington authored
Signed-off-by:
Derek Chickles <derek.chickles@cavium.com> Signed-off-by:
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Florian Fainelli authored
Since commit a390d1f3 ("phylib: convert state_queue work to delayed_work"), the PHYLIB state machine was converted to use delayed workqueues, yet some functions were still referencing the PHY library timer in their comments, fix that and remove the now unused linux/timer.h include. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== nfp: extend firmware request logic We have been pondering for some time how to support loading different application firmwares onto NFP. We want to support both users selecting one of the firmware images provided by Netronome (which are optimized for different use cases each) as well as firmware images created by users themselves or other companies. In the end we decided to go with the simplest solution - depending on the right firmware image being placed in /lib/firmware. This vastly simplifies driver logic and also doesn't require any new API. Different NICs on one system may want to run different applications therefore we first try to load firmware specific to the device (by serial number of PCI slot) and if not present try the device model based name we have been using so far. ==================== Signed-off-by: -
Jakub Kicinski authored
request_firmware() will fallback to user space helper and may cause long delays when driver is loaded if udev doesn't correctly handle FW requests. Since we never really made use of the user space helper functionality switch to the simpler request_firmware_direct() call. The side effect of this change is that no warning will be printed when the FW image does not exists. To help users figure out which FW file is missing print a info message when we request each file. Signed-off-by:
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Jakub Kicinski authored
We generally look up firmware by card type, but that doesn't allow users who have more than one card of the same type in their system to select firmware per adapter. Unfortunately user space firmware helper seems fraught with difficulties and to be on its way out. In particular support for handling firmware uevents have been dropped from systemd and most distributions don't enable the FW fallback by default any more. To allow users selecting firmware for a particular device look up firmware names by serial and pci_name(). Use the direct lookup to disable generating uevents when enabled in Kconfig and not print any warnings to logs if adapter-specific files are missing. Users can place in /lib/firmware/netronome files named: pci-${pci_name}.nffw serial-${serial}.nffw to target a specific card. E.g.: pci-0000:04:00.0.nffw pci-0000:82:00.0.nffw serial-00-aa-bb-11-22-33-10-ff.nffw We use the full serial number including the interface id, as it appears in lspci output (bytes separated by '-'). Signed-off-by:
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