- 09 Oct, 2017 40 commits
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Tariq Toukan authored
Fix the following SPARSE warning, in MLX4_GET() macro: drivers/net/ethernet/mellanox/mlx4/fw.c:233:9: warning: cast to restricted __be64 Fixes: 17d5ceb6 ("net/mlx4_core: Fix unaligned accesses") Signed-off-by:
Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Tariq Toukan authored
Should take care of the endianness before assigning to params2 field. Fixes: 53f33ae2 ("net/mlx4_core: Port aggregation upper layer interface") Signed-off-by:
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Mika Westerberg authored
The 0day kbuild robot reports following crash: BUG: unable to handle kernel NULL pointer dereference at 00000004 IP: tb_property_find+0xe/0x41 *pde = 00000000 Oops: 0000 [#1] CPU: 0 PID: 1 Comm: swapper Not tainted 4.14.0-rc1-00741-ge69b6c02 #412 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 task: 89c80000 task.stack: 89c7c000 EIP: tb_property_find+0xe/0x41 EFLAGS: 00210246 CPU: 0 EAX: 00000000 EBX: 7a368f47 ECX: 00000044 EDX: 7a368f47 ESI: 8851d340 EDI: 7a368f47 EBP: 89c7df0c ESP: 89c7defc DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 CR0: 80050033 CR2: 00000004 CR3: 027a2000 CR4: 00000690 Call Trace: tb_register_property_dir+0x49/0xb9 ? cdc_mbim_driver_init+0x1b/0x1b tbnet_init+0x77/0x9f ? cdc_mbim_driver_init+0x1b/0x1b do_one_initcall+0x7e/0x145 ? parse_args+0x10c/0x1b3 ? kernel_init_freeable+0xbe/0x159 kernel_init_freeable+0xd1/0x159 ? rest_init+0x110/0x110 kernel_init+0xd/0xd0 ret_from_fork+0x19/0x30 The reason is that both Thunderbolt bus and thunderbolt-net are build into the kernel image, and the latter is linked first because drivers/net comes before drivers/thunderbolt. Since both use module_init() thunderbolt-net ends up calling Thunderbolt bus functions too early triggering the above crash. Fix this by moving Thunderbolt bus initialization to happen earlier to make sure all the data structures are ready when Thunderbolt service drivers are initialized. To be on the safe side also add a check for properly initialized xdomain_property_dir to tb_register_property_dir(). Reported-by:
kernel test robot <fengguang.wu@intel.com> Signed-off-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by:
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Eric Dumazet authored
per cpu allocations are already zeroed, no need to clear them again. Fixes: d52d3997 ("ipv6: Create percpu rt6_info") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Tejun Heo <tj@kernel.org> Acked-by:
Tejun Heo <tj@kernel.org> Acked-by:
Martin KaFai Lau <kafai@fb.com> Signed-off-by:
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David S. Miller authored
Michal Kalderon says: ==================== qed: Add iWARP support for unaligned MPA packets This patch series adds support for handling unaligned MPA packets. (FPDUs split over more than one tcp packet). When FW detects a packet is unaligned it fowards the packet to the driver via a light l2 dedicated connection. The driver then stores this packet until the remainder of the packet is received. Once the driver reconstructs the full FPDU, it sends it down to fw via the ll2 connection. Driver also breaks down any packed PDUs into separate packets for FW. Patches 1-6 are all slight modifications to ll2 to support additional requirements for the unaligned MPA ll2 client. Patch 7 opens the additional ll2 connection for iWARP. Patches 8-12 contain the algorithm for aligning packets. ==================== Signed-off-by:
Michal Kalderon <Michal.Kalderon@cavium.com> Signed-off-by:
Ariel Elior <Ariel.Elior@cavium.com> Signed-off-by:
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Michal Kalderon authored
We continue to maintain a maximum of three buffers per fpdu, to ensure that there are enough buffers for additional unaligned mpa packets. To support this, if a fpdu is split over more than two tcp packets, we use an intermediate buffer to copy the data to the previous buffer, then we can release the data. We need an intermediate buffer as the initial buffer partial packet could be located at the end of the packet, not leaving room for additional data. This is a corner case, and will usually not be the case. Signed-off-by:
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Michal Kalderon authored
There is a special case where an MPA header is split over to tcp packets, in this case we need to wait for the next packet to get the fpdu length. We use the incomplete_bytes to mark this fpdu as a "special" one which requires updating the length with the next packet Signed-off-by:
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Michal Kalderon authored
When posting a packet on the ll2 tx, we can provide a cookie that will be returned upon tx completion. This cookie is the ll2 iwarp buffer which is then reposted to the rx ring. Part of the unaligned mpa flow is determining when a buffer can be reposted. Each buffer needs to be sent only once as a cookie for on the tx ring. In packed fpdu case, only the last packet will be sent with the buffer, meaning we need to handle the case that a cookie can be NULL on tx complete. In addition, when a fpdu splits over two buffers, but there are no more fpdus on the second buffer, two buffers need to be provided as a cookie. To avoid changing the ll2 interface to provide two cookies, we introduce a piggy buf pointer, relevant for iWARP only, that holds a pointer to a second buffer that needs to be released during tx completion. Signed-off-by:
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Michal Kalderon authored
The fpdu data structure is preallocated per connection. Each connection stores the current status of the connection: either nothing pending, or there is a partial fpdu that is waiting for the rest of the fpdu (incomplete bytes != 0). The same structure is also used for splitting a packet when there are packed fpdus. The structure is initialized with all data required for sending the fpdu back to the FW. A fpdu will always be spanned across a maximum of 3 tx bds. One for the header, one for the partial fdpu received and one for the remainder (unaligned) packet. In case of packed fpdu's, two fragments are used, one for the header and one for the data. Corner cases are not handled in the patch for clarity, and will be added as a separate patch. Signed-off-by:
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Michal Kalderon authored
The mpa buff is a descriptor for iwarp ll2 buffers that contains additional information required for aligining fpdu's. In some cases, an additional packet will arrive which will complete the alignment of a fpdu, but we won't be able to post the fpdu due to insufficient place on the tx ring. In this case we can't loose the data and require storing it for later. Processing is therefore done in two places, during rx completion, where we initialize a mpa buffer descriptor and add it to the pending list, and during tx-completion, since we free up an entry in the tx chain we can process any pending mpa packets. The mpa buff descriptors are pre-allocated since we have to ensure that we won't reach a state where we can't store an incoming unaligned packet. All packets received on the ll2 MUST be processed by the driver at some stage. Since they are preallocated, we hold a free list. Signed-off-by:
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Michal Kalderon authored
This patch adds only the establishment and termination of the ll2 connection that handles unaligned MPA packets. Signed-off-by:
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Michal Kalderon authored
For iWARP unaligned MPA flow, a slowpath event of flushing an MPA connection that entered an unaligned state is required. The flush ramrod is received on the ll2 queue, and a pre-registered callback function is called to handle the flush event. Signed-off-by:
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Michal Kalderon authored
When a packet is sent back to iWARP FW via the tx ll2 connection the FW needs to know the source of the packet. Whether it is OOO or unaligned MPA related. Since OOO is implemented entirely inside the ll2 code (and shared with iSCSI), packets are marked as IN_ORDER inside the ll2 code. For unaligned mpa the value will be determined in the iWARP code and sent on the pkt->vlan field. Signed-off-by:
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Michal Kalderon authored
enable_ip_cksum, enable_l4_cksum, calc_ip_len were added in commit stated below but not passed through to FW. This was OK until now as it wasn't used, but is required for the iWARP unaligned flow Fixes:7c7973b2 ("qed: LL2 to use packed information for tx") Signed-off-by:
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Michal Kalderon authored
The option of sending a packet on the ll2 and dropping it exists in hardware and was not used until now, thus not exposed. The iWARP unaligned MPA flow requires this functionality for flushing the tx queue. Signed-off-by:
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Michal Kalderon authored
When more than one ll2 queue is opened ( that is not an OOO queue ) ll2 code does not have enough information to determine whether the queue is the main one or not, so a new field is added to the acquire input data to expose the control of determining whether the queue is the main queue or a secondary queue. Signed-off-by:
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Michal Kalderon authored
iWARP uses 3 ll2 connections, the maximum number of bds is known during connection setup. This patch modifies the static array in the ll2_tx_packet descriptor to be a flexible array and significantlly reduces memory size. In addition, some redundant fields in the ll2_tx_packet were removed, which also contributed to decreasing the descriptor size. Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: Offload bridge device mrouter Yotam says: Similarly to a bridged port, the bridge device itself can be configured by the user to be an mrouter port. In this case, all multicast traffic should be forwarded to it. Make the mlxsw Spectrum driver offload these directives to the Spectrum hardware. Patches 1 and 2 add a new switchdev notification for bridge device mrouter port status and make the bridge module notify about it. Patches 3-5 change the mlxsw Spectrum driver to handle these notifications by adding the Spectrum router port to the bridge MDB entries. v1->v2: - patch1: - Don't add the MDB_RTR_TYPE_TEMP state and use the timer_pending to distinguish between learning-on and learning-off states ==================== Signed-off-by: -
Yotam Gigi authored
Support the SWITCHDEV_ATTR_ID_BRIDGE_MROUTER port attribute switchdev notification. To do that, add the mrouter flag to struct mlxsw_sp_bridge_device, which indicates whether the bridge device was set to be mrouter port. This field is set when: - A new bridge is created, where the value is taken from the kernel bridge value. - A switchdev SWITCHDEV_ATTR_ID_BRIDGE_MROUTER notification is sent. In addition, change the bridge MID entries to include the router port when the bridge device is configured to be mrouter port. The MID entries are updated in the following cases: - When a new MID entry is created, update the router port according to the bridge mrouter state. - When a SWITCHDEV_ATTR_ID_BRIDGE_MROUTER notification is sent, update all the bridge's MID entries. This is aligned with the case where a bridge slave is configured to be mrouter port. Signed-off-by:
Yotam Gigi <yotamg@mellanox.com> Reviewed-by:
Nogah Frankel <nogahf@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Yotam Gigi authored
In Spectrum, MDB entries point to MID entries, that indicate which ports a packet should be forwarded to. Add the support in creating MID entries that forward the packet to the Spectrum router port. This will be later used to handle the bridge mrouter port switchdev notifications. Signed-off-by:
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Yotam Gigi authored
In Spectrum hardware, the router port is a virtual port that is the gateway to the routing mechanism. Hence, in order for a packet to be L3 forwarded, it must first be L2 forwarded to the router port inside the hardware. Further patches in this patchset are going to introduce support in bridge device used as an mrouter port. In this case, the router port index will be needed in order to update the MDB entries to include the router port. Thus, export the mlxsw_sp_router_port function, which returns the index of the Spectrum router port. Signed-off-by:
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Yotam Gigi authored
Add an access function that, given a bridge netdevice, returns whether the bridge device is currently an mrouter or not. The function uses the already existing br_multicast_is_router function to check that. This function is needed in order to allow ports that join an already existing bridge to know the current mrouter state of the bridge device. Together with the bridge device mrouter ports switchdev notifications, it is possible to have full offloading of the semantics of the bridge device mcast router state. Due to the fact that the bridge multicast router status can change in packet RX path, take the multicast_router bridge spinlock to protect the read. Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
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Yotam Gigi authored
Add the SWITCHDEV_ATTR_ID_BRIDGE_MROUTER switchdev notification type, used to indicate whether the bridge is or isn't mrouter. Notify when the bridge changes its state, similarly to the already existing bridged port mrouter notifications. The notification uses the switchdev_attr.u.mrouter boolean flag to indicate the current bridge mrouter status. Thus, it only indicates whether the bridge is currently used as an mrouter or not, and does not indicate the exact mrouter state of the bridge (learning, permanent, etc.). Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== nfp: bpf ABIv2 and multi port This series migrates our eBPF offload from old PoC firmware to a redesigned, faster and more feature rich FW. Marking support is dropped for now. We have to teach the JIT about encoding local memory accesses (one of NFP memory types). There is also code to populate the ECC of instructions (PoC had ECC protection on instruction store disabled). There is also a minor ld_field fix and all 64 bit shifts can now be encoded. ==================== Signed-off-by: -
Jakub Kicinski authored
ld_field instruction is a bit special because the encoding uses two source registers and one of them becomes the output. We do need to pass the dst register to our encoding helpers though, otherwise the "write both banks" flag will not be observed. Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by:
Simon Horman <simon.horman@netronome.com> Signed-off-by:
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Jakub Kicinski authored
Device expects the instructions in little endian. Make sure we byte swap on big endian hosts. Signed-off-by:
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Jakub Kicinski authored
We need to append up to 8 nops after last instruction to make sure the CPU will not fetch garbage instructions with invalid ECC if the code store was not initialized. Signed-off-by:
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Jakub Kicinski authored
In the initial PoC firmware I simply disabled ECC on the instruction store. Do the ECC calculation for generated instructions in the driver. Signed-off-by:
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Jakub Kicinski authored
Datapath ABI version 2 stores the packet information in LMEM instead of NNRs. We also have strict restrictions on which GPRs we can use. Only GPRs 0-23 are reserved for BPF. Adjust the static register locations and "ABI" registers. Note that packet length is packed with other info so we have to extract it into one of the scratch registers, OTOH since LMEM can be used in restricted operands we don't have to extract packet pointer. Signed-off-by:
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Jakub Kicinski authored
Most instructions have special fields which allow switching between base and extended Local Memory pointers. Introduce those to register encoding, we will use the extra LM pointers to access high addresses of the stack. Signed-off-by:
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Jakub Kicinski authored
NFP LMEM is a large, indirectly accessed register file. There are two basic indirect access registers. Each access operation may either use offset (up to 8 or 16 words) or perform post decrement/increment. Add encodings of LMEM indexes as instruction operands. Signed-off-by:
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Jakub Kicinski authored
We need to add longer OP_* defines, move the values away. Purely whitespace commit. Signed-off-by:
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Jakub Kicinski authored
Temporarily drop support for skb->mark. We are primarily focusing on XDP offload, and implementing skb->mark on the new datapath has lower priority. Signed-off-by:
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Jakub Kicinski authored
Remove the register renumbering optimization. To implement calling map and other helpers we need more strict register layout. We can't freely reassign register numbers. This will have the effect of running in 4 context/thread mode, which should be OK since we are moving towards integrating the BPF closer with FW app datapath anyway, and the target datapath itself runs in 4 context mode. Signed-off-by:
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Jakub Kicinski authored
Add encodings of all 64bit shift operations. Signed-off-by:
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Jakub Kicinski authored
Move the software reg helpers and some static data to nfp_asm.c. They are related to the previous patch, but move is done in a separate commit for ease of review. Signed-off-by:
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Jakub Kicinski authored
Define a new __bitwise type for software representation of registers. This will allow us to catch incorrect parameter types using sparse. Accessors we define also allow us to return correct enum type and therefore ensure all switches handle all register types. Signed-off-by:
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Jakub Kicinski authored
Limiting the eBPF offload to a single port was a workaround required for the PoC application FW which has not been released externally. It's not necessary any more. Signed-off-by:
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Jakub Kicinski authored
Use standard devlink trace point to allow tracing of control messages. Signed-off-by:
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David S. Miller authored
Yunsheng Lin says: ==================== A few cleanup for hns3 ethernet driver This patchset contains a few cleanup for hns3 ethernet driver. No functional change intended. ==================== Signed-off-by:
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