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2017-02-17bridge: don't indicate expiry on NTF_EXT_LEARNED fdb entriesRoopa Prabhu1-1/+1
added_by_external_learn fdb entries are added and expired by external entities like switchdev driver or external controllers. ageing is already disabled for such entries. Hence, don't indicate expiry for such fdb entries. CC: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> CC: Jiri Pirko <jiri@resnulli.us> CC: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Tested-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17bpf: make jited programs visible in tracesDaniel Borkmann13-63/+419
Long standing issue with JITed programs is that stack traces from function tracing check whether a given address is kernel code through {__,}kernel_text_address(), which checks for code in core kernel, modules and dynamically allocated ftrace trampolines. But what is still missing is BPF JITed programs (interpreted programs are not an issue as __bpf_prog_run() will be attributed to them), thus when a stack trace is triggered, the code walking the stack won't see any of the JITed ones. The same for address correlation done from user space via reading /proc/kallsyms. This is read by tools like perf, but the latter is also useful for permanent live tracing with eBPF itself in combination with stack maps when other eBPF types are part of the callchain. See offwaketime example on dumping stack from a map. This work tries to tackle that issue by making the addresses and symbols known to the kernel. The lookup from *kernel_text_address() is implemented through a latched RB tree that can be read under RCU in fast-path that is also shared for symbol/size/offset lookup for a specific given address in kallsyms. The slow-path iteration through all symbols in the seq file done via RCU list, which holds a tiny fraction of all exported ksyms, usually below 0.1 percent. Function symbols are exported as bpf_prog_<tag>, in order to aide debugging and attribution. This facility is currently enabled for root-only when bpf_jit_kallsyms is set to 1, and disabled if hardening is active in any mode. The rationale behind this is that still a lot of systems ship with world read permissions on kallsyms thus addresses should not get suddenly exposed for them. If that situation gets much better in future, we always have the option to change the default on this. Likewise, unprivileged programs are not allowed to add entries there either, but that is less of a concern as most such programs types relevant in this context are for root-only anyway. If enabled, call graphs and stack traces will then show a correct attribution; one example is illustrated below, where the trace is now visible in tooling such as perf script --kallsyms=/proc/kallsyms and friends. Before: 7fff8166889d bpf_clone_redirect+0x80007f0020ed (/lib/modules/4.9.0-rc8+/build/vmlinux) f5d80 __sendmsg_nocancel+0xffff006451f1a007 (/usr/lib64/libc-2.18.so) After: 7fff816688b7 bpf_clone_redirect+0x80007f002107 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fffa0575728 bpf_prog_33c45a467c9e061a+0x8000600020fb (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fffa07ef1fc cls_bpf_classify+0x8000600020dc (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff81678b68 tc_classify+0x80007f002078 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff8164d40b __netif_receive_skb_core+0x80007f0025fb (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff8164d718 __netif_receive_skb+0x80007f002018 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff8164e565 process_backlog+0x80007f002095 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff8164dc71 net_rx_action+0x80007f002231 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff81767461 __softirqentry_text_start+0x80007f0020d1 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff817658ac do_softirq_own_stack+0x80007f00201c (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff810a2c20 do_softirq+0x80007f002050 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff810a2cb5 __local_bh_enable_ip+0x80007f002085 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff8168d452 ip_finish_output2+0x80007f002152 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff8168ea3d ip_finish_output+0x80007f00217d (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff8168f2af ip_output+0x80007f00203f (/lib/modules/4.9.0-rc8+/build/vmlinux) [...] 7fff81005854 do_syscall_64+0x80007f002054 (/lib/modules/4.9.0-rc8+/build/vmlinux) 7fff817649eb return_from_SYSCALL_64+0x80007f002000 (/lib/modules/4.9.0-rc8+/build/vmlinux) f5d80 __sendmsg_nocancel+0xffff01c484812007 (/usr/lib64/libc-2.18.so) Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17bpf: remove stubs for cBPF from arch codeDaniel Borkmann6-27/+14
Remove the dummy bpf_jit_compile() stubs for eBPF JITs and make that a single __weak function in the core that can be overridden similarly to the eBPF one. Also remove stale pr_err() mentions of bpf_jit_compile. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17bpf: mark all registered map/prog types as __ro_after_initDaniel Borkmann6-23/+23
All map types and prog types are registered to the BPF core through bpf_register_map_type() and bpf_register_prog_type() during init and remain unchanged thereafter. As by design we don't (and never will) have any pluggable code that can register to that at any later point in time, lets mark all the existing bpf_{map,prog}_type_list objects in the tree as __ro_after_init, so they can be moved to read-only section from then onwards. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17bridge: vlan_tunnel: explicitly reset metadata attrs to NULL on failureRoopa Prabhu1-0/+2
Fixes: efa5356b0d97 ("bridge: per vlan dst_metadata netlink support") Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net: bgmac: store MAC address directly in netdev->dev_addrTobias Klauser4-8/+6
After commit 34a5102c3235 ("net: bgmac: allocate struct bgmac just once & don't copy it") the mac_addr member of struct bgmac is no longer necessary to pass the MAC address to bgmac_enet_probe(). Instead it can directly be stored in netdev->dev_addr. Also use eth_hw_addr_random() instead of eth_random_addr() in case a random MAC is nedded. This will make sure netdev->addr_assign_type will be properly set. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Jon Mason <jon.mason@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net: ethoc: Use eth_hw_addr_random()Tobias Klauser1-8/+2
Use eth_hw_addr_random() to set a random dev_addr and update addr_assign_type instead of open-coding it. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17rhashtable: Add nested tablesHerbert Xu2-72/+276
This patch adds code that handles GFP_ATOMIC kmalloc failure on insertion. As we cannot use vmalloc, we solve it by making our hash table nested. That is, we allocate single pages at each level and reach our desired table size by nesting them. When a nested table is created, only a single page is allocated at the top-level. Lower levels are allocated on demand during insertion. Therefore for each insertion to succeed, only two (non-consecutive) pages are needed. After a nested table is created, a rehash will be scheduled in order to switch to a vmalloced table as soon as possible. Also, the rehash code will never rehash into a nested table. If we detect a nested table during a rehash, the rehash will be aborted and a new rehash will be scheduled. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17tipc: Fix tipc_sk_reinit race conditionsHerbert Xu2-11/+23
There are two problems with the function tipc_sk_reinit. Firstly it's doing a manual walk over an rhashtable. This is broken as an rhashtable can be resized and if you manually walk over it during a resize then you may miss entries. Secondly it's missing memory barriers as previously the code used spinlocks which provide the barriers implicitly. This patch fixes both problems. Fixes: 07f6c4bc048a ("tipc: convert tipc reference table to...") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17gfs2: Use rhashtable walk interface in glock_hash_walkHerbert Xu1-11/+17
The function glock_hash_walk walks the rhashtable by hand. This is broken because if it catches the hash table in the middle of a rehash, then it will miss entries. This patch replaces the manual walk by using the rhashtable walk interface. Fixes: 88ffbf3e037e ("GFS2: Use resizable hash table for glocks") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net: mvneta: make mvneta_eth_tool_ops staticJisheng Zhang1-1/+1
The mvneta_eth_tool_ops is only used internally in mvneta driver, so make it static. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net/sched: cls_bpf: Reflect HW offload statusOr Gerlitz1-2/+11
BPF classifier support for the "in hw" offloading flags. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Amir Vadai <amir@vadai.me> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net/sched: cls_u32: Reflect HW offload statusOr Gerlitz1-0/+10
U32 support for the "in hw" offloading flags. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Amir Vadai <amir@vadai.me> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net/sched: cls_matchall: Reflect HW offloading statusOr Gerlitz1-2/+10
Matchall support for the "in hw" offloading flags. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Amir Vadai <amir@vadai.me> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net/sched: cls_flower: Reflect HW offload statusOr Gerlitz1-0/+5
Flower support for the "in hw" offloading flags. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Amir Vadai <amir@vadai.me> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net/sched: Reflect HW offload statusOr Gerlitz2-2/+9
Currently there is no way of querying whether a filter is offloaded to HW or not when using "both" policy (where none of skip_sw or skip_hw flags are set by user-space). Add two new flags, "in hw" and "not in hw" such that user space can determine if a filter is actually offloaded to hw or not. The "in hw" UAPI semantics was chosen so it's similar to the "skip hw" flag logic. If none of these two flags are set, this signals running over older kernel. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Amir Vadai <amir@vadai.me> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net/sched: cls_matchall: Dump the classifier flagsOr Gerlitz1-0/+3
The classifier flags are not dumped to user-space, do that. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Yotam Gigi <yotamg@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net/sched: cls_flower: Properly handle classifier flags dumpingOr Gerlitz1-1/+2
Dump the classifier flags only if non zero and make sure to check the return status of the handler that puts them into the netlink msg. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net: oki-semi: pch_gbe: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes1-20/+38
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. As I don't have the hardware, I'd be very pleased if someone may test this patch. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net: ethernet: ti: cpsw: correct ale dev to cpswIvan Khoronzhuk1-1/+1
The ale is a property of cpsw, so change dev to cpsw->dev, aka pdev->dev, to be consistent. Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net: nvidia: forcedeth: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes1-41/+50
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. As I don't have the hardware, I'd be very pleased if someone may test this patch. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17ptp: create "pins" together with the rest of attributesDmitry Torokhov3-42/+24
Let's switch to using device_create_with_groups(), which will allow us to create "pins" attribute group together with the rest of ptp device attributes, and before userspace gets notified about ptp device creation. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17ptp: use is_visible method to hide unused attributesDmitry Torokhov1-70/+55
Instead of creating selected attributes after the device is created (and after userspace potentially seen uevent), lets use attribute group is_visible() method to control which attributes are shown. This will allow us to create all attributes (except "pins" group, which will be taken care of later) before userspace gets notified about new ptp class device. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17ptp: use kcalloc when allocating arraysDmitry Torokhov1-3/+2
kcalloc is more semantically correct when allocating arrays of objects, and overflow-safe. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17ptp: do not explicitly set drvdata in ptp_clock_register()Dmitry Torokhov1-2/+0
We do not need explicitly call dev_set_drvdata(), as it is done for us by device_create(). Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17mlx4: do not fire tasklet unless necessaryEric Dumazet2-9/+6
All rx and rx netdev interrupts are handled by respectively by mlx4_en_rx_irq() and mlx4_en_tx_irq() which simply schedule a NAPI. But mlx4_eq_int() also fires a tasklet to service all items that were queued via mlx4_add_cq_to_tasklet(), but this handler was not called unless user cqe was handled. This is very confusing, as "mpstat -I SCPU ..." show huge number of tasklet invocations. This patch saves this overhead, by carefully firing the tasklet directly from mlx4_add_cq_to_tasklet(), removing four atomic operations per IRQ. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Tariq Toukan <tariqt@mellanox.com> Cc: Saeed Mahameed <saeedm@mellanox.com> Acked-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-16cxgb4: Remove redundant code in t4_uld_clean_up()Ganesh Goudar1-2/+0
Remove variable rxq_info and also remove redundant assignment to it. Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-16cxgb4: Add new T5 and T6 pci device id'sGanesh Goudar1-0/+5
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-16cxgb4: Increase max number of tc u32 linksArjun V3-13/+7
Make max number of supported tc u32 links equal to max number of filters supported by hardware. Signed-off-by: Arjun V <arjun@chelsio.com> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-16vfs: fix uninitialized flags in splice_to_pipe()Miklos Szeredi1-0/+1
Flags (PIPE_BUF_FLAG_PACKET, PIPE_BUF_FLAG_GIFT) could remain on the unused part of the pipe ring buffer. Previously splice_to_pipe() left the flags value alone, which could result in incorrect behavior. Uninitialized flags appears to have been there from the introduction of the splice syscall. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Cc: <stable@vger.kernel.org> # 2.6.17+ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-16fuse: fix uninitialized flags in pipe_bufferMiklos Szeredi1-0/+1
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Fixes: d82718e348fe ("fuse_dev_splice_read(): switch to add_to_pipe()") Cc: <stable@vger.kernel.org> # 4.9+
2017-02-16ixgbe: Don't bother clearing buffer memory for descriptor ringsAlexander Duyck2-71/+99
This patch makes it so that we don't need to bother with clearing the memory out for the descriptor rings. The general idea is to only free buffers associated with buffers in use which are located between the next_to_clean and next_to_use or next_to_alloc values. Everything outside of those regions can be safely ignored since they should have no buffers associated with them. The advantage to doing things this way is that is should speed up bring-up and tear-down of the rings. Specifically we can avoid the 512 or more cycles required to memset the rings in tear-down. In the bring-up phase we then clear the memory as a part of initialization. The general idea is that the clearing in initialization can act as a prefetch of sorts for the buffer info structures so they are in the local CPU when we go to populate them. This should help to improve overall time needed to perform a suspend/resume. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Add support for build_skbAlexander Duyck1-1/+48
This patch adds build_skb support to the Rx path. There are several advantages to this change. 1. It avoids the memcpy and skb->head allocation for small packets which improves performance by about 5% in my tests. 2. It avoids the memcpy, skb->head allocation, and eth_get_headlen for larger packets improving performance by about 10% in my tests. 3. For VXLAN packets it allows the full header to be in skb->data which improves the performance by as much as 30% in some of my tests. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Add private flag to control buffer modeAlexander Duyck1-0/+47
Since there are potential drawbacks to the new Rx allocation approach I thought it best to add a "chicken bit" so that we can turn the feature off if in the event that a problem is found. It also provides a means of validating the legacy Rx path in the event that we are forced to fall back. At some point in the future when we are convinced we don't need it anymore we might be able to drop the legacy-rx flag. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Add support for padding packetAlexander Duyck2-4/+56
This patch adds support for providing a buffer with headroom and tailroom to allow for shared info, NET_SKB_PAD, and NET_IP_ALIGN. With this combined with the DMA changes we can start using build_skb to build frames around an incoming Rx buffer instead of having to memcpy the headers. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Break out Rx buffer page managementAlexander Duyck1-109/+122
We are going to be expanding the number of Rx paths in the driver. Instead of duplicating all that code I am pulling it apart into separate functions so that we don't have so much code duplication. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Use length to determine if descriptor is doneAlexander Duyck2-7/+9
This change makes it so that we use the length of the packet instead of the DD status bit to determine if a new descriptor is ready to be processed. The obvious advantage is that it cuts down on reads as we don't really even need the DD bit if going from a 0 to a non-zero value on size is enough to inform us that the packet has been completed. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Make use of order 1 pages and 3K buffers independent of FCoEAlexander Duyck2-17/+22
In order to support build_skb with jumbo frames it will be necessary to use 3K buffers for the Rx path with 8K pages backing them. This is needed on architectures that implement 4K pages because we can't support 2K buffers plus padding in a 4K page. In the case of systems that support page sizes larger than 4K the 3K attribute will only be applied to FCoE as we can fall back to using just 2K buffers and adding the padding. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Update code to better handle incrementing page countAlexander Duyck2-15/+31
Batch the page count updates instead of doing them one at a time. By doing this we can improve the overall performance as the atomic increment operations can be expensive due to the fact that on x86 they are locked operations which can cause stalls. By doing bulk updates we can consolidate the stall which should help to improve the overall receive performance. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Acked-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Update driver to make use of DMA attributes in Rx pathAlexander Duyck2-19/+40
This patch adds support for DMA_ATTR_SKIP_CPU_SYNC and DMA_ATTR_WEAK_ORDERING. By enabling both of these for the Rx path we are able to see performance improvements on architectures that implement either one due to the fact that page mapping and unmapping only has to sync what is actually being used instead of the entire buffer. In addition by enabling the weak ordering attribute enables a performance improvement for architectures that can associate a memory ordering with a DMA buffer such as Sparc. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Only DMA sync frame lengthAlexander Duyck1-5/+5
On some platforms, syncing a buffer for DMA is expensive. Rather than sync the whole 2K receive buffer, only synchronise the length of the frame, which will typically be the MTU, or a much smaller TCP ACK. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Add function for checking to see if we can reuse pageAlexander Duyck1-29/+42
This patch consolidates the code for the ixgbe driver so that it is more inline with what is already in igb. The general idea is to just consolidate functions that represent logical steps in the Rx process so we can later update them more easily. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Update version to reflect added functionalityMark Rustad1-1/+1
Update the driver version to reflect the new devices that it supports. Signed-off-by: Mark Rustad <mark.d.rustad@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: prefix Data Center Bridge ops structStephen Hemminger3-3/+3
Since dcbnl_ops is global, it should be prefixed by ixgbe_ Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-16ixgbe: Support 2.5Gb and 5Gb speedTony Nguyen2-3/+10
Though not advertised through ethtool, if the link partner advertises a 2.5Gb or 5Gb connection, and the adapter supports it, allow the speed to be used. Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Krishneil Singh <krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-02-15rhashtable: Revert nested table changes.David S. Miller5-316/+94
This reverts commits: 6a25478077d987edc5e2f880590a2bc5fcab4441 9dbbfb0ab6680c6a85609041011484e6658e7d3c 40137906c5f55c252194ef5834130383e639536f It's too risky to put in this late in the release cycle. We'll put these changes into the next merge window instead. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-15ibmvnic: Fix endian errors in error reporting outputThomas Falcon1-4/+4
Error reports received from firmware were not being converted from big endian values, leading to bogus error codes reported on little endian systems. Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-15ibmvnic: Fix endian error when requesting device capabilitiesThomas Falcon1-2/+2
When a vNIC client driver requests a faulty device setting, the server returns an acceptable value for the client to request. This 64 bit value was incorrectly being swapped as a 32 bit value, resulting in loss of data. This patch corrects that by using the 64 bit swap function. Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-15atm: idt77252, use setup_timer and mod_timerJan Koniarik1-9/+3
Stop accessing timer struct members directly and use setup_timer and mod_timer helpers intended for that use. It makes the code cleaner and will allow for easier change of the timer struct internals. Signed-off-by: Jan Koniarik <jan.koniarik@trustica.cz> Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Chas Williams <3chas3@gmail.com> Cc: <linux-atm-general@lists.sourceforge.net> Cc: <netdev@vger.kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-15mlxsw: acl: Use PBS type for forward actionJiri Pirko1-11/+9
Current behaviour of "mirred redirect" action (forward) offload is a bit odd. For matched packets the action forwards them to the desired destination, but it also lets the packet duplicates to go the original way down (bridge, router, etc). That is more like "mirred mirror". Fix this by using PBS type which behaves exactly like "mirred redirect". Note that PBS does not support loopback mode. Fixes: 4cda7d8d7098 ("mlxsw: core: Introduce flexible actions support") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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