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2016-11-27bpf: drop unnecessary context cast from BPF_PROG_RUNDaniel Borkmann1-1/+1
Since long already bpf_func is not only about struct sk_buff * as input anymore. Make it generic as void *, so that callers don't need to cast for it each time they call BPF_PROG_RUN(). Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-16netronome: don't access real_num_rx_queues directlyArnd Bergmann1-8/+6
The netdev->real_num_rx_queues setting is only available if CONFIG_SYSFS is enabled, so we now get a build failure when that is turned off: netronome/nfp/nfp_net_common.c: In function 'nfp_net_ring_swap_enable': netronome/nfp/nfp_net_common.c:2489:18: error: 'struct net_device' has no member named 'real_num_rx_queues'; did you mean 'real_num_tx_queues'? As far as I can tell, the check here is only used as an optimization that we can skip in order to fix the compilation. If sysfs is disabled, the following netif_set_real_num_rx_queues() has no effect. Fixes: 164d1e9e5d52 ("nfp: add support for ethtool .set_channels") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: add support for offload of XDP programsJakub Kicinski6-6/+139
Most infrastructure can be reused, provide separate handling of context offsets and exit codes. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: remove unnecessary parameters from nfp_net_bpf_offload()Jakub Kicinski3-7/+3
nfp_net_bpf_offload() takes all .setup_tc() parameters but it doesn't use them at the moment. Remove unnecessary ones to make it possible for XDP to reuse this function. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: add XDP support in the driverJakub Kicinski4-101/+449
Add XDP support. Separate stack's and XDP's TX rings logically. Add functions for handling XDP_TX and cleanup of XDP's TX rings. For XDP allocate all RX buffers as separate pages and map them with DMA_BIDIRECTIONAL. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: reorganize nfp_net_rx() to get packet offsets earlyJakub Kicinski1-26/+30
Calculate packet offsets early in nfp_net_rx() so that we will be able to use them in upcoming XDP handler. While at it move relevant variables into the loop scope. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: add support for ethtool .set_channelsJakub Kicinski4-22/+123
Allow changing the number of rings via ethtool .set_channels API. Runtime reconfig needs to be extended to handle number of rings. We need to be able to activate interrupt vectors before rings are assigned to them. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: move RSS indirection table init into a separate functionJakub Kicinski1-5/+10
We will need to rerun the initialization of the RSS indirection table after the number of rings is changed. Move the code to a separate function. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: add helper to reassign rings to IRQ vectorsJakub Kicinski1-24/+16
Instead of fixing ring -> vector relations up in ring swap functions put the reassignment into a helper function which will reinit all links. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: loosen relation between rings and IRQs vectorsJakub Kicinski1-6/+6
Upcoming XDP support will break the assumption that one can iterate over IRQ vectors to get to all the rings easily. Use nn->.x_ring arrays directly. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: reuse ring helpers on .ndo_open() pathJakub Kicinski1-40/+20
Ring allocation helpers encapsulate all ring allocation and initialization steps nicely. Reuse them on .ndo_open() path. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: rename ring allocation helpersJakub Kicinski1-13/+13
"Shadow" in ring helpers used to mean that the helper will allocate rings without touching existing configuration, this was used for reconfiguration while the device was running. We will soon use the same helpers for .ndo_open() path, so replace "shadow" with "ring_set". No functional changes. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: centralize runtime reconfiguration logicJakub Kicinski3-119/+118
All functions which need to reallocate ring resources at runtime look very similar. Centralize that logic into a separate function. Encapsulate configuration parameters in a structure. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-04nfp: add support for ethtool .get_channelsJakub Kicinski1-0/+16
Report number of rings via ethtool .get_channels API. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: bring back support for different ring countsJakub Kicinski1-47/+71
We used to always allocate the same number of TX and RX rings so the support for having r_vectors without one of the rings was dropped. That makes us, however, unnecessarily limited to 8 TX rings (8 is the Linux RSS default) most of the time. Also we are about to add channel count configuration via ethtool, so bring that support back. TX rings can now default to num_online_cpus() and RX rings to netif_get_num_default_rss_queues(). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: replace num_irqs with max_r_vecsJakub Kicinski2-8/+10
num_irqs is not used anywhere, replace it with max_r_vecs which holds number of allocated RX/TX vectors and is going to be useful soon. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: remove nfp_net_irqs_wanted()Jakub Kicinski1-23/+4
nfp_net_irqs_wanted() doesn't really encapsulate much logic, remove it and inline the calculations. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: use unsigned int for vector/ring countsJakub Kicinski2-10/+12
Use unsigned int consistently for vector/ring counts. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: create separate define for max number of vectorsJakub Kicinski1-3/+5
We are currently using define for max TX rings to allocate IRQ vectors. It's OK since the max number of rings for TX and RX are currently the same, but lets make the code nicer by taking max of the two. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: use AND instead of modulo to get ring indexesJakub Kicinski1-7/+7
We already force ring sizes to be power of 2 so replace modulo operations with AND (size - 1) in index calculations. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: add separate buffer allocation function for napiJakub Kicinski1-2/+21
Introduce a separate buffer allocation function to be called from NAPI. We can make assumptions about the context and buffer size. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: use alloc_frag() and build_skb()Jakub Kicinski3-50/+82
Speed up RX processing by moving to the alloc_frag()/build_skb() paradigm. Since we're no longer mapping the entire buffer for DMA add helpers which take care of calculating offsets and lengths. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: add buffer drop/recycle helper for RXJakub Kicinski1-10/+17
nfp_net_rx() is quite long already and about to get longer. Move buffer drop/recycle to a helper. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: centralize the buffer size calculationJakub Kicinski2-9/+21
Add a helper function to calculate the buffer size at run time. Buffer lengths will now depend on the FW prepend configuration instead of assuming the most space consuming configuration and defaulting to 2k buffers at initialization time. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: remove inline attributes and dead codeJakub Kicinski1-14/+1
Don't declare functions as static inline in .c files and remove dead code it was hiding. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: remove unnecessary call to ether_setup()Jakub Kicinski1-1/+0
ether_setup() will be invoked by alloc_etherdev_mqs(), no need to call it again. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: remove support for nfp3200Jakub Kicinski4-138/+22
Drop all code related to nfp3200. It was never widely deployed as a NIC. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-01nfp: simplify nfp_net_poll()Jakub Kicinski1-9/+3
There are few variables in nfp_net_poll() which are used only once or unused but set. Remove them. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-18ethernet: use core min/max MTU checkingJarod Wilson1-5/+5
et131x: min_mtu 64, max_mtu 9216 altera_tse: min_mtu 64, max_mtu 1500 amd8111e: min_mtu 60, max_mtu 9000 bnad: min_mtu 46, max_mtu 9000 macb: min_mtu 68, max_mtu 1500 or 10240 depending on hardware capability xgmac: min_mtu 46, max_mtu 9000 cxgb2: min_mtu 68, max_mtu 9582 (pm3393) or 9600 (vsc7326) enic: min_mtu 68, max_mtu 9000 gianfar: min_mtu 50, max_mu 9586 hns_enet: min_mtu 68, max_mtu 9578 (v1) or 9706 (v2) ksz884x: min_mtu 60, max_mtu 1894 myri10ge: min_mtu 68, max_mtu 9000 natsemi: min_mtu 64, max_mtu 2024 nfp: min_mtu 68, max_mtu hardware-specific forcedeth: min_mtu 64, max_mtu 1500 or 9100, depending on hardware pch_gbe: min_mtu 46, max_mtu 10300 pasemi_mac: min_mtu 64, max_mtu 9000 qcaspi: min_mtu 46, max_mtu 1500 - remove qcaspi_netdev_change_mtu as it is now redundant rocker: min_mtu 68, max_mtu 9000 sxgbe: min_mtu 68, max_mtu 9000 stmmac: min_mtu 46, max_mtu depends on hardware tehuti: min_mtu 60, max_mtu 16384 - driver had no max mtu checking, but product docs say 16k jumbo packets are supported by the hardware netcp: min_mtu 68, max_mtu 9486 - remove netcp_ndo_change_mtu as it is now redundant via-velocity: min_mtu 64, max_mtu 9000 octeon: min_mtu 46, max_mtu 65370 CC: netdev@vger.kernel.org CC: Mark Einon <mark.einon@gmail.com> CC: Vince Bridgers <vbridger@opensource.altera.com> CC: Rasesh Mody <rasesh.mody@qlogic.com> CC: Nicolas Ferre <nicolas.ferre@atmel.com> CC: Santosh Raspatur <santosh@chelsio.com> CC: Hariprasad S <hariprasad@chelsio.com> CC: Christian Benvenuti <benve@cisco.com> CC: Sujith Sankar <ssujith@cisco.com> CC: Govindarajulu Varadarajan <_govind@gmx.com> CC: Neel Patel <neepatel@cisco.com> CC: Claudiu Manoil <claudiu.manoil@freescale.com> CC: Yisen Zhuang <yisen.zhuang@huawei.com> CC: Salil Mehta <salil.mehta@huawei.com> CC: Hyong-Youb Kim <hykim@myri.com> CC: Jakub Kicinski <jakub.kicinski@netronome.com> CC: Olof Johansson <olof@lixom.net> CC: Jiri Pirko <jiri@resnulli.us> CC: Byungho An <bh74.an@samsung.com> CC: Girish K S <ks.giri@samsung.com> CC: Vipul Pandya <vipul.pandya@samsung.com> CC: Giuseppe Cavallaro <peppe.cavallaro@st.com> CC: Alexandre Torgue <alexandre.torgue@st.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: Wingman Kwok <w-kwok2@ti.com> CC: Murali Karicheri <m-karicheri2@ti.com> CC: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-14net/sched: tc_mirred: Rename public predicates 'is_tcf_mirred_redirect' and 'is_tcf_mirred_mirror'Shmulik Ladkani1-1/+1
These accessors are used in various drivers that support tc offloading, to detect properties of a given 'tc_action'. 'is_tcf_mirred_redirect' tests that the action is TCA_EGRESS_REDIR. 'is_tcf_mirred_mirror' tests that the action is TCA_EGRESS_MIRROR. As a prep towards supporting INGRESS redir/mirror, rename these predicates to reflect their true meaning: s/is_tcf_mirred_redirect/is_tcf_mirred_egress_redirect/ s/is_tcf_mirred_mirror/is_tcf_mirred_egress_mirror/ Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Cc: Hariprasad S <hariprasad@chelsio.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Cc: Jiri Pirko <jiri@mellanox.com> Cc: Ido Schimmel <idosch@mellanox.com> Cc: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-30nfp: bpf: zero extend 4 byte context loadsJakub Kicinski1-0/+2
Set upper 32 bits of destination register to zeros after load from the context structure. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-26nfp: bpf: improve handling for disabled BPF syscallArnd Bergmann2-10/+3
I stumbled over a new warning during randconfig testing, with CONFIG_BPF_SYSCALL disabled: drivers/net/ethernet/netronome/nfp/nfp_net_offload.c: In function 'nfp_net_bpf_offload': drivers/net/ethernet/netronome/nfp/nfp_net_offload.c:263:3: error: '*((void *)&res+4)' may be used uninitialized in this function [-Werror=maybe-uninitialized] drivers/net/ethernet/netronome/nfp/nfp_net_offload.c:263:3: error: 'res.n_instr' may be used uninitialized in this function [-Werror=maybe-uninitialized] As far as I can tell, this is a false positive caused by the compiler getting confused about a function that is partially inlined, but it's easy to avoid while improving the code: The nfp_bpf_jit() stub helper for that configuration is unusual as it is defined in a header file but not marked 'static inline'. By moving the compile-time check into the caller using the IS_ENABLED() macro, we can remove that stub and simplify the nfp_net_bpf_offload_prepare() function enough to unconfuse the compiler. Fixes: 7533fdc0f77f ("nfp: bpf: add hardware bpf offload") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-2/+6
2016-09-21nfp: bpf: add offload of TC direct action modeJakub Kicinski4-2/+82
Add offload of TC in direct action mode. We just need to provide appropriate checks in the verifier and a new outro block to translate the exit codes to what data path expects Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-21nfp: bpf: add support for legacy redirect actionJakub Kicinski3-0/+7
Data path has redirect support so expressing redirect to the port frame came from is a trivial matter of setting the right result code. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-21nfp: bpf: add packet marking supportJakub Kicinski6-22/+101
Add missing ABI defines and eBPF instructions to allow mark to be passed on and extend prepend parsing on the RX path to pick it up from packet metadata. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-21nfp: bpf: allow offloaded filters to update statsJakub Kicinski4-0/+97
Periodically poll stats and call into offloaded actions to update them. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-21nfp: bpf: add hardware bpf offloadJakub Kicinski5-7/+324
Add hardware bpf offload on our smart NICs. Detect if capable firmware is loaded and use it to load the code JITed with just added translator onto programmable engines. This commit only supports offloading cls_bpf in legacy mode (non-direct action). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-21nfp: add BPF to NFP code translatorJakub Kicinski5-0/+2333
Add translator for JITing eBPF to operations which can be executed on NFP's programmable engines. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-16nfp: fix error return code in nfp_net_netdev_open()Wei Yongjun1-2/+6
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: 73725d9dfd99 ("nfp: allocate ring SW structs dynamically") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-08nfp: don't pad frames on receiveJakub Kicinski1-4/+0
There is no need to pad frames to ETH_ZLEN on RX. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-08nfp: drop support for old firmware ABIsJakub Kicinski1-4/+2
Be more strict about FW versions. Drop support for old transitional revisions which were never used in production. Dropping support for FW ABI version 0.0.0.0 is particularly useful because 0 could just be uninitialized memory. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-08nfp: remove linux/version.h includesJakub Kicinski3-3/+0
Remove unnecessary version.h includes. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-11nfp: check idx is -ENOSPC before using it is an indexColin Ian King1-1/+1
idx can be returned as -ENOSPC, so we should check for this first before using it as an index into nn->vxlan_usecnt[] to avoid an out of bounds array offset read. Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-30nfp: implement ethtool .get_link() callbackJakub Kicinski1-0/+1
Point the ethtool .get_link() callback to the standard ethtool_op_get_link() implementation. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-30nfp: remove unused parameter from nfp_net_write_mac_addr()Jakub Kicinski1-6/+7
nfp_net_write_mac_addr() always writes to the BAR the current device address taken from netdev struct. The address given as parameter is actually ignored. Since all callers pass netdev->dev_addr simply remove the parameter. While at it improve the function's kdoc a bit. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-30nfp: correct name of control BAR defineJakub Kicinski2-3/+3
Spell abbreviation of control as ctrl not crtl. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-3/+3
Several cases of overlapping changes, except the packet scheduler conflicts which deal with the addition of the free list parameter to qdisc_enqueue(). Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-17nfp: Replace ndo_add/del_vxlan_port with ndo_add/del_udp_enc_portAlexander Duyck1-8/+14
This change replaces the network device operations for adding or removing a VXLAN port with operations that are more generically defined to be used for any UDP offload port but provide a type. As such by just adding a line to verify that the offload type is VXLAN we can maintain the same functionality. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-16nfp: use correct index to mask link state irqJakub Kicinski1-3/+3
We were using an incorrect define to get the irq vector number. NFP_NET_CFG_LSC is a control BAR offset, LSC interrupt vector index is called NFP_NET_IRQ_LSC_IDX. For machines with less than 30 CPUs this meant that we were disabling/enabling IRQ 0. For bigger hosts we were just playing with the 31st RX/TX interrupt. Fixes: 0ba40af963f0 ("nfp: move link state interrupt request/free calls") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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