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path: root/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
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2020-03-18cxgb4: rework TC filter rule insertion across regionsRahul Lakkireddy
Chelsio NICs have 3 filter regions, in following order of priority: 1. High Priority (HPFILTER) region (Highest Priority). 2. HASH region. 3. Normal FILTER region (Lowest Priority). Currently, there's a 1-to-1 mapping between the prio value passed by TC and the filter region index. However, it's possible to have multiple TC rules with the same prio value. In this case, if a region is exhausted, no attempt is made to try inserting the rule in the next available region. So, rework and remove the 1-to-1 mapping. Instead, dynamically select the region to insert the filter rule, as long as the new rule's prio value doesn't conflict with existing rules across all the 3 regions. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-08cxgb4/chcr: Add ipv6 support and statisticsRohit Maheshwari
Adding ipv6 support and ktls related statistics. v1->v2: - added blank lines at 2 places. v3->v4: - Replaced atomic_t with atomic64_t - added few necessary stat counters. Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-17cxgb4/chtls: fix ULD connection failures due to wrong TID baseShahjada Abul Husain
Currently, the hardware TID index is assumed to start from index 0. However, with the following changeset, commit c21939998802 ("cxgb4: add support for high priority filters") hardware TID index can start after the high priority region, which has introduced a regression resulting in connection failures for ULDs. So, fix all related code to properly recalculate the TID start index based on whether high priority filters are enabled or not. Fixes: c21939998802 ("cxgb4: add support for high priority filters") Signed-off-by: Shahjada Abul Husain <shahjada@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-10cxgb4: add support for high priority filtersShahjada Abul Husain
T6 has a separate region known as high priority filter region that allows classifying packets going through ULD path. So, query firmware for HPFILTER resources and enable the high priority offload filter support when it is available. Signed-off-by: Shahjada Abul Husain <shahjada@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07cxgb4: parse and configure TC-MQPRIO offloadRahul Lakkireddy
Add logic for validation and configuration of TC-MQPRIO Qdisc offload. Also, add support to manage EOSW_TXQ, which have 1-to-1 mapping with EOTIDs, and expose them to network stack. Move common skb validation in Tx path to a separate function and add minimal Tx path for ETHOFLD. Update Tx queue selection to return normal NIC Txq to send traffic pattern that can't go through ETHOFLD Tx path. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-07cxgb4: query firmware for QoS offload resourcesRahul Lakkireddy
QoS offload needs Ethernet Offload (ETHOFLD) resources present in the NIC. These resources are shared with other ULDs. So, query firmware for the available number of traffic classes, as well as, start and end indices (EOTID) of the ETHOFLD region. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-10cxgb4/libcxgb/cxgb4i/cxgbit: enable eDRAM page pods for iSCSIVarun Prakash
Page pods are used for direct data placement, this patch enables eDRAM page pods if firmware supports this feature. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-22cxgb4: Enable hash filter with offloadVishal Kulkarni
Hash (exact-match) filters used for offloading flows share the same active region resources on the chip with upper layer drivers, like iw_cxgb4, chcr, etc. Currently, only either Hash filters or ULDs can use the active region resources, but not both. Hence, use the new firmware configuration parameters (when available) to allow both the Hash filters and ULDs to share the active region simultaneously. Signed-off-by: Vishal Kulkarni <vishal@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-15cxgb4: Export sge_host_page_size to uldsRaju Rangoju
Export the sge_host_page_size field to ULDs via cxgb4_lld_info, so that iw_cxgb4 can make use of this in calculating the correct qp/cq mask. Fixes: 2391b0030e24 ("cxgb4: Remove SGE_HOST_PAGE_SIZE dependency on page size") Signed-off-by: Raju Rangoju <rajur@chelsio.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-10-18cxgb4: fix the error path of cxgb4_uld_register()Ganesh Goudar
On multi adapter setup if the uld registration fails even on one adapter, the allocated resources for the uld on all the adapters are freed, rendering the functioning adapters unusable. This commit fixes the issue by freeing the allocated resources only for the failed adapter. Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-31cxgb4: LLD driver changes to support TLSAtul Gupta
Read the Inline TLS capability from firmware. Determine the area reserved for storing the keys Dump the Inline TLS tx and rx records count. Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Reviewed-by: Michael Werner <werner@chelsio.com> Reviewed-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-22cxgb4: Support firmware rdma write completion work request.Raju Rangoju
If FW supports RDMA WRITE_COMPLETION functionality, then advertise that to the ULDs. This will be used by iw_cxgb4 to allow WRITE_COMPLETION work requests. Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com> Signed-off-by: Raju Rangoju <rajur@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-22cxgb4: Support firmware rdma write with immediate work request.Raju Rangoju
If FW supports RDMA WRITE_WITH_IMMEDATE functionality, then advertise that to the ULDs. This will be used by iw_cxgb4 to allow WRITE_WITH_IMMEDIATE work requests. Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com> Signed-off-by: Raju Rangoju <rajur@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-22cxgb4: Add support to query HW SRQ parametersRaju Rangoju
This patch adds support to query FW for the HW SRQ table start/end, and advertise that for ULDs. Signed-off-by: Raju Rangoju <rajur@chelsio.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-16cxgb4: notify fatal error to uld driversGanesh Goudar
notify uld drivers if the adapter encounters fatal error. Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-02net: cxgb4: avoid memcpy beyond end of source bufferArnd Bergmann
Building with link-time-optimizations revealed that the cxgb4 driver does a fixed-size memcpy() from a variable-length constant string into the network interface name: In function 'memcpy', inlined from 'cfg_queues_uld.constprop' at drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c:335:2, inlined from 'cxgb4_register_uld.constprop' at drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c:719:9: include/linux/string.h:350:3: error: call to '__read_overflow2' declared with attribute error: detected read beyond size of object passed as 2nd parameter __read_overflow2(); ^ I can see two equally workable solutions: either we use a strncpy() instead of the memcpy() to stop at the end of the input, or we make the source buffer fixed length as well. This implements the latter. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-29cxgb4: Add support for Inline IPSec TxAtul Gupta
Added Tx routine for ULD - define interface for ULD Tx. Export routines used for Tx data - Routines common for data transmit are used by cxgb4 and chcr drivers. - EXPORT routines enable transmit from chcr driver. Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-01cxgb4: add support to retrieve stats for hash filtersKumar Sanghvi
Add support to retrieve packet-count and byte-count for hash-filters by retrieving filter-entry appropriately based on whether the request is for hash-filter or not. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-01cxgb4: add support to delete hash filterKumar Sanghvi
Use a combined ulptx work-request to send hash filter deletion request to hw. Hash filter deletion reply is processed on getting cpl_abort_rpl_rss. Release any L2T/SMT/CLIP entries on filter deletion. Also, free up the corresponding filter entry. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-22cxgb4: fetch stats for offloaded tc flower flowsKumar Sanghvi
Add support to retrieve stats from hardware for offloaded tc flower flows. Also, poll for the stats of offloaded flows via timer callback. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-22cxgb4: add basic tc flower offload supportKumar Sanghvi
Add support to add/remove flows for offload. Following match and action are supported for offloading a flow: Match: ether-protocol, IPv4/IPv6 addresses, L4 ports (TCP/UDP) Action: drop, redirect to another port on the device. The qualifying flows can have accompanying mask information. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: "Reasonably busy this cycle, but perhaps not as busy as in the 4.12 merge window: 1) Several optimizations for UDP processing under high load from Paolo Abeni. 2) Support pacing internally in TCP when using the sch_fq packet scheduler for this is not practical. From Eric Dumazet. 3) Support mutliple filter chains per qdisc, from Jiri Pirko. 4) Move to 1ms TCP timestamp clock, from Eric Dumazet. 5) Add batch dequeueing to vhost_net, from Jason Wang. 6) Flesh out more completely SCTP checksum offload support, from Davide Caratti. 7) More plumbing of extended netlink ACKs, from David Ahern, Pablo Neira Ayuso, and Matthias Schiffer. 8) Add devlink support to nfp driver, from Simon Horman. 9) Add RTM_F_FIB_MATCH flag to RTM_GETROUTE queries, from Roopa Prabhu. 10) Add stack depth tracking to BPF verifier and use this information in the various eBPF JITs. From Alexei Starovoitov. 11) Support XDP on qed device VFs, from Yuval Mintz. 12) Introduce BPF PROG ID for better introspection of installed BPF programs. From Martin KaFai Lau. 13) Add bpf_set_hash helper for TC bpf programs, from Daniel Borkmann. 14) For loads, allow narrower accesses in bpf verifier checking, from Yonghong Song. 15) Support MIPS in the BPF selftests and samples infrastructure, the MIPS eBPF JIT will be merged in via the MIPS GIT tree. From David Daney. 16) Support kernel based TLS, from Dave Watson and others. 17) Remove completely DST garbage collection, from Wei Wang. 18) Allow installing TCP MD5 rules using prefixes, from Ivan Delalande. 19) Add XDP support to Intel i40e driver, from Björn Töpel 20) Add support for TC flower offload in nfp driver, from Simon Horman, Pieter Jansen van Vuuren, Benjamin LaHaise, Jakub Kicinski, and Bert van Leeuwen. 21) IPSEC offloading support in mlx5, from Ilan Tayari. 22) Add HW PTP support to macb driver, from Rafal Ozieblo. 23) Networking refcount_t conversions, From Elena Reshetova. 24) Add sock_ops support to BPF, from Lawrence Brako. This is useful for tuning the TCP sockopt settings of a group of applications, currently via CGROUPs" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1899 commits) net: phy: dp83867: add workaround for incorrect RX_CTRL pin strap dt-bindings: phy: dp83867: provide a workaround for incorrect RX_CTRL pin strap cxgb4: Support for get_ts_info ethtool method cxgb4: Add PTP Hardware Clock (PHC) support cxgb4: time stamping interface for PTP nfp: default to chained metadata prepend format nfp: remove legacy MAC address lookup nfp: improve order of interfaces in breakout mode net: macb: remove extraneous return when MACB_EXT_DESC is defined bpf: add missing break in for the TCP_BPF_SNDCWND_CLAMP case bpf: fix return in load_bpf_file mpls: fix rtm policy in mpls_getroute net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t net, ax25: convert ax25_route.refcount from atomic_t to refcount_t net, ax25: convert ax25_uid_assoc.refcount from atomic_t to refcount_t net, sctp: convert sctp_ep_common.refcnt from atomic_t to refcount_t net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t net, sctp: convert sctp_chunk.refcnt from atomic_t to refcount_t net, sctp: convert sctp_datamsg.refcnt from atomic_t to refcount_t net, sctp: convert sctp_auth_bytes.refcnt from atomic_t to refcount_t ...
2017-06-20crypto: chcr - Select device in Round Robin fashionHarsh Jain
When multiple devices are present in system select device in round-robin fashion for crypto operations Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Reviewed-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-06-20chcr - Add debug countersHarsh Jain
Count types of operation done by HW. Signed-off-by: Harsh Jain <harsh@chelsio.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-06-07cxgb4: Fix tids count for ipv6 offload connectionGanesh Goudar
the adapter consumes two tids for every ipv6 offload connection be it active or passive, calculate tid usage count accordingly. Also change the signatures of relevant functions to get the address family. Signed-off-by: Rizwan Ansari <rizwana@chelsio.com> Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-21crypto: chcr - Fix txq ids.Harsh Jain
The patch fixes a critical issue to map txqid with flows on the hardware appropriately, if tx queues created are more than flows configured then txqid shall map within the range of hardware flows configured. This ensure that un-mapped txqid does not remain un-handled. The patch also segregated the rxqid and txqid for clarity. Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Reviewed-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-18cxgb4: Allocate Tx queues dynamicallyHariprasad Shenai
Allocate resources dynamically for Upper layer driver's (ULD) like cxgbit, iw_cxgb4, cxgb4i and chcr. The resources allocated include Tx queues which are allocated when ULD register with cxgb4 driver and freed while un-registering. The Tx queues which are shared by ULD shall be allocated by first registering driver and un-allocated by last unregistering driver. Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-09Merge tag 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull main rdma updates from Doug Ledford: "This is the main pull request for the rdma stack this release. The code has been through 0day and I had it tagged for linux-next testing for a couple days. Summary: - updates to mlx5 - updates to mlx4 (two conflicts, both minor and easily resolved) - updates to iw_cxgb4 (one conflict, not so obvious to resolve, proper resolution is to keep the code in cxgb4_main.c as it is in Linus' tree as attach_uld was refactored and moved into cxgb4_uld.c) - improvements to uAPI (moved vendor specific API elements to uAPI area) - add hns-roce driver and hns and hns-roce ACPI reset support - conversion of all rdma code away from deprecated create_singlethread_workqueue - security improvement: remove unsafe ib_get_dma_mr (breaks lustre in staging)" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (75 commits) staging/lustre: Disable InfiniBand support iw_cxgb4: add fast-path for small REG_MR operations cxgb4: advertise support for FR_NSMR_TPTE_WR IB/core: correctly handle rdma_rw_init_mrs() failure IB/srp: Fix infinite loop when FMR sg[0].offset != 0 IB/srp: Remove an unused argument IB/core: Improve ib_map_mr_sg() documentation IB/mlx4: Fix possible vl/sl field mismatch in LRH header in QP1 packets IB/mthca: Move user vendor structures IB/nes: Move user vendor structures IB/ocrdma: Move user vendor structures IB/mlx4: Move user vendor structures IB/cxgb4: Move user vendor structures IB/cxgb3: Move user vendor structures IB/mlx5: Move and decouple user vendor structures IB/{core,hw}: Add constant for node_desc ipoib: Make ipoib_warn ratelimited IB/mlx4/alias_GUID: Remove deprecated create_singlethread_workqueue IB/ipoib_verbs: Remove deprecated create_singlethread_workqueue IB/ipoib: Remove deprecated create_singlethread_workqueue ...
2016-10-07cxgb4: advertise support for FR_NSMR_TPTE_WRSteve Wise
Query firmware for the FW_PARAMS_PARAM_DEV_RI_FR_NSMR_TPTE_WR parameter. If it exists and is 1, then advertise support for FR_NSMR_TPTE_WR to the ULDs. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-09-22cxgb4: add common api support for configuring filtersRahul Lakkireddy
Enable filters for non-offload configuration and add common api support for setting and deleting filters in LE-TCAM region of the hardware. IPv4 filters occupy one slot. IPv6 filters occupy 4 slots and must be on a 4-slot boundary. IPv4 filters can not occupy a slot belonging to IPv6 and the vice-versa is also true. Filters are set and deleted asynchronously. Use completion to wait for reply from firmware in order to allow for synchronization if needed. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-19chcr/cxgb4i/cxgbit/RDMA/cxgb4: Allocate resources dynamically for all cxgb4 ↵Hariprasad Shenai
ULD's Allocate resources dynamically to cxgb4's Upper layer driver's(ULD) like cxgbit, iw_cxgb4 and cxgb4i. Allocate resources when they register with cxgb4 driver and free them while unregistering. All the queues and the interrupts for them will be allocated during ULD probe only and freed during remove. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-18cxgb4: Add support for dynamic allocation of resources for ULDHariprasad Shenai
Add a new commmon infrastructure to allocate reosurces dynamically to Upper layer driver's(ULD) when they register with cxgb4 driver and free them during unregistering. All the queues and the interrupts for them will be allocated during ULD probe only and freed during remove. Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22cxgb4: update struct cxgb4_lld_info definitionVarun Prakash
add members for iSCSI DDP. Signed-off-by: Varun Prakash <varun@chelsio.com> Acked-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2016-03-22cxgb4: large receive offload supportVarun Prakash
add large receive offload(LRO) support for upper layer drivers. Signed-off-by: Varun Prakash <varun@chelsio.com> Acked-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2016-03-22cxgb4: add new ULD type CXGB4_ULD_ISCSITVarun Prakash
Chelsio iSCSI target offload driver will register with cxgb4 driver as ULD of type CXGB4_ULD_ISCSIT. Signed-off-by: Varun Prakash <varun@chelsio.com> Acked-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2015-10-21cxgb4: T6 adapter lld support for iw_cxgb4 driverHariprasad S
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-08-12cxgb4: Differentiate between stids between server and filter regionHariprasad Shenai
For T4 adapter, offloaded servers tid for IPv4 connections are allocated from filter region. So add a new field for server filter tid if server tid is allocated from filter region. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-12cxgb4: Differentiates between TIDs being used in TCAM and HASHHariprasad Shenai
For the tid info, differentiate from which region the TID is allocated from. It can be from TCAM region or HASH region. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: 1) Add TX fast path in mac80211, from Johannes Berg. 2) Add TSO/GRO support to ibmveth, from Thomas Falcon 3) Move away from cached routes in ipv6, just like ipv4, from Martin KaFai Lau. 4) Lots of new rhashtable tests, from Thomas Graf. 5) Run ingress qdisc lockless, from Alexei Starovoitov. 6) Allow servers to fetch TCP packet headers for SYN packets of new connections, for fingerprinting. From Eric Dumazet. 7) Add mode parameter to pktgen, for testing receive. From Alexei Starovoitov. 8) Cache access optimizations via simplifications of build_skb(), from Alexander Duyck. 9) Move page frag allocator under mm/, also from Alexander. 10) Add xmit_more support to hv_netvsc, from KY Srinivasan. 11) Add a counter guard in case we try to perform endless reclassify loops in the packet scheduler. 12) Extern flow dissector to be programmable and use it in new "Flower" classifier. From Jiri Pirko. 13) AF_PACKET fanout rollover fixes, performance improvements, and new statistics. From Willem de Bruijn. 14) Add netdev driver for GENEVE tunnels, from John W Linville. 15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso. 16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet. 17) Add an ECN retry fallback for the initial TCP handshake, from Daniel Borkmann. 18) Add tail call support to BPF, from Alexei Starovoitov. 19) Add several pktgen helper scripts, from Jesper Dangaard Brouer. 20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa. 21) Favor even port numbers for allocation to connect() requests, and odd port numbers for bind(0), in an effort to help avoid ip_local_port_range exhaustion. From Eric Dumazet. 22) Add Cavium ThunderX driver, from Sunil Goutham. 23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata, from Alexei Starovoitov. 24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai. 25) Double TCP Small Queues default to 256K to accomodate situations like the XEN driver and wireless aggregation. From Wei Liu. 26) Add more entropy inputs to flow dissector, from Tom Herbert. 27) Add CDG congestion control algorithm to TCP, from Kenneth Klette Jonassen. 28) Convert ipset over to RCU locking, from Jozsef Kadlecsik. 29) Track and act upon link status of ipv4 route nexthops, from Andy Gospodarek. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits) bridge: vlan: flush the dynamically learned entries on port vlan delete bridge: multicast: add a comment to br_port_state_selection about blocking state net: inet_diag: export IPV6_V6ONLY sockopt stmmac: troubleshoot unexpected bits in des0 & des1 net: ipv4 sysctl option to ignore routes when nexthop link is down net: track link-status of ipv4 nexthops net: switchdev: ignore unsupported bridge flags net: Cavium: Fix MAC address setting in shutdown state drivers: net: xgene: fix for ACPI support without ACPI ip: report the original address of ICMP messages net/mlx5e: Prefetch skb data on RX net/mlx5e: Pop cq outside mlx5e_get_cqe net/mlx5e: Remove mlx5e_cq.sqrq back-pointer net/mlx5e: Remove extra spaces net/mlx5e: Avoid TX CQE generation if more xmit packets expected net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq() net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device ...
2015-06-11cxgb4: Support for user mode bar2 mappings with T4Hariprasad S
Enhance cxgb4_t4_bar2_sge_qregs() and cxgb4_bar2_sge_qregs() to support T4 user mode mappings. Update all the current users as well. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-06-01cxgb4: remove unused fn to enable/disable db coalescingHariprasad Shenai
Remove unused function cxgb4_enable_db_coalescing() and cxgb4_disable_db_coalescing() Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-05cxgb4: Add device node to ULD infoHariprasad Shenai
Adds device node to ULD info. Use the node info to alloc_ring() for ctrl TX queues Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-15cxgb4 : Update ipv6 address handling apiAnish Bhatt
This patch improves on previously added support for ipv6 addresses. The code is consolidated to a single file and adds an api for use by dependent upper level drivers such as cxgb4i/iw_cxgb4 etc. Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: Deepak Singh <deepak.s@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09cxgb4/cxgb4vf: Use new interfaces to calculate BAR2 SGE Queue Register addressesHariprasad Shenai
Use BAR2 Going To Sleep (GTS) for T5 and later. Use new BAR2 User Doorbells for T5 for both cxgb4 and cxgb4vf driver. Based on original work by Casey Leedom <leedom@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-10cxgb4: Cleanup macros so they follow the same style and look consistent, part 2Hariprasad Shenai
Various patches have ended up changing the style of the symbolic macros/register defines to different style. As a result, the current kernel.org files are a mix of different macro styles. Since this macro/register defines is used by different drivers a few patch series have ended up adding duplicate macro/register define entries with different styles. This makes these register define/macro files a complete mess and we want to make them clean and consistent. This patch cleans up a part of it. Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-17cxgb4: Export symbols required by cxgb4i for ipv6 support and required definesAnish Bhatt
Signed-off-by: Anish Bhatt <anish@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-15cxgb4/iw_cxgb4: work request logging featureHariprasad Shenai
This commit enhances the iwarp driver to optionally keep a log of rdma work request timining data for kernel mode QPs. If iw_cxgb4 module option c4iw_wr_log is set to non-zero, each work request is tracked and timing data maintained in a rolling log that is 4096 entries deep by default. Module option c4iw_wr_log_size_order allows specifing a log2 size to use instead of the default order of 12 (4096 entries). Both module options are read-only and must be passed in at module load time to set them. IE: modprobe iw_cxgb4 c4iw_wr_log=1 c4iw_wr_log_size_order=10 The timing data is viewable via the iw_cxgb4 debugfs file "wr_log". Writing anything to this file will clear all the timing data. Data tracked includes: - The host time when the work request was posted, just before ringing the doorbell. The host time when the completion was polled by the application. This is also the time the log entry is created. The delta of these two times is the amount of time took processing the work request. - The qid of the EQ used to post the work request. - The work request opcode. - The cqe wr_id field. For sq completions requests this is the swsqe index. For recv completions this is the MSN of the ingress SEND. This value can be used to match log entries from this log with firmware flowc event entries. - The sge timestamp value just before ringing the doorbell when posting, the sge timestamp value just after polling the completion, and CQE.timestamp field from the completion itself. With these three timestamps we can track the latency from post to poll, and the amount of time the completion resided in the CQ before being reaped by the application. With debug firmware, the sge timestamp is also logged by firmware in its flowc history so that we can compute the latency from posting the work request until the firmware sees it. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-15cxgb4/iw_cxgb4: display TPTE on errorsHariprasad Shenai
With ingress WRITE or READ RESPONSE errors, HW provides the offending stag from the packet. This patch adds logic to log the parsed TPTE in this case. cxgb4 now exports a function to read a TPTE entry from adapter memory. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-15cxgb4/iw_cxgb4: use firmware ord/ird resource limitsHariprasad Shenai
Advertise a larger max read queue depth for qps, and gather the resource limits from fw and use them to avoid exhaustinq all the resources. Design: cxgb4: Obtain the max_ordird_qp and max_ird_adapter device params from FW at init time and pass them up to the ULDs when they attach. If these parameters are not available, due to older firmware, then hard-code the values based on the known values for older firmware. iw_cxgb4: Fix the c4iw_query_device() to report these correct values based on adapter parameters. ibv_query_device() will always return: max_qp_rd_atom = max_qp_init_rd_atom = min(module_max, max_ordird_qp) max_res_rd_atom = max_ird_adapter Bump up the per qp max module option to 32, allowing it to be increased by the user up to the device max of max_ordird_qp. 32 seems to be sufficient to maximize throughput for streaming read benchmarks. Fail connection setup if the negotiated IRD exhausts the available adapter ird resources. So the driver will track the amount of ird resource in use and not send an RI_WR/INIT to FW that would reduce the available ird resources below zero. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-15iw_cxgb4: Detect Ing. Padding Boundary at run-timeHariprasad Shenai
Updates iw_cxgb4 to determine the Ingress Padding Boundary from cxgb4_lld_info, and take subsequent actions. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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