- 21 Apr, 2017 22 commits
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David S. Miller authored
Cong Wang says: ==================== net_sched: clean up tc filter destroy and delete logic The first patch fixes a potenial race condition, the second one is pure cleanup. ==================== Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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WANG Cong authored
There is no need to NULL tp->root in ->destroy(), since tp is going to be freed very soon, and existing readers are still safe to read them. For cls_route, we always init its tp->root, so it can't be NULL, we can drop more useless code. Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: John Fastabend <john.fastabend@gmail.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
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WANG Cong authored
We could have a race condition where in ->classify() path we dereference tp->root and meanwhile a parallel ->destroy() makes it a NULL. Daniel cured this bug in commit d9363774 ("net, sched: respect rcu grace period on cls destruction"). This happens when ->destroy() is called for deleting a filter to check if we are the last one in tp, this tp is still linked and visible at that time. The root cause of this problem is the semantic of ->destroy(), it does two things (for non-force case): 1) check if tp is empty 2) if tp is empty we could really destroy it and its caller, if cares, needs to check its return value to see if it is really destroyed. Therefore we can't unlink tp unless we know it is empty. As suggested by Daniel, we could actually move the test logic to ->delete() so that we can safely unlink tp after ->delete() tells us the last one is just deleted and before ->destroy(). Fixes: 1e052be6 ("net_sched: destroy proto tp when all filters are gone") Cc: Roi Dayan <roid@mellanox.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: John Fastabend <john.fastabend@gmail.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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Daniel Borkmann authored
Add napi_id access to __sk_buff for socket filter program types, tc program types and other bpf_convert_ctx_access() users. Having access to skb->napi_id is useful for per RX queue listener siloing, f.e. in combination with SO_ATTACH_REUSEPORT_EBPF and when busy polling is used, meaning SO_REUSEPORT enabled listeners can then select the corresponding socket at SYN time already [1]. The skb is marked via skb_mark_napi_id() early in the receive path (e.g., napi_gro_receive()). Currently, sockets can only use SO_INCOMING_NAPI_ID from 6d433902 ("net: Introduce SO_INCOMING_NAPI_ID") as a socket option to look up the NAPI ID associated with the queue for steering, which requires a prior sk_mark_napi_id() after the socket was looked up. Semantics for the __sk_buff napi_id access are similar, meaning if skb->napi_id is < MIN_NAPI_ID (e.g. outgoing packets using sender_cpu), then an invalid napi_id of 0 is returned to the program, otherwise a valid non-zero napi_id. [1] http://netdevconf.org/2.1/slides/apr6/dumazet-BUSY-POLLING-Netdev-2.1.pdfSuggested-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
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K. Y. Srinivasan authored
We will not be able to send packets over a channel that has been rescinded. Make necessary adjustments so we can properly cleanup even when the channel is rescinded. This issue can be trigerred in the NIC hot-remove path. Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
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David S. Miller authored
Nathan Fontenot says: ==================== ibmvnic: Updates and bug fixes This set of patches is a series of updates to remove some unneeded and unused code in the driver as well as bug fixes for the ibmvnic driver. ==================== Signed-off-by: -
Nathan Fontenot authored
The bounce buffer is not used in the ibmvnic driver, just get rid of it. Signed-off-by:
Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by:
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Nathan Fontenot authored
Update the allocation of memory for the sub crq structs and their associated pages to allocate zero-filled memory. Signed-off-by:
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Brian King authored
Add some code to call disable_irq on all the vnic interface's irqs. This fixes a crash observed when closing an active interface, as seen in the oops below when we try to access a buffer in the interrupt handler which we've already freed. Unable to handle kernel paging request for data at address 0x00000001 Faulting instruction address: 0xd000000003886824 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=2048 NUMA pSeries Modules linked in: ibmvnic(OEN) rpadlpar_io(X) rpaphp(X) tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag rpcsec_ Supported: No, Unsupported modules are loaded CPU: 8 PID: 0 Comm: swapper/8 Tainted: G OE NX 4.4.49-92.11-default #1 task: c00000007f990110 ti: c0000000fffa0000 task.ti: c00000007f9b8000 NIP: d000000003886824 LR: d000000003886824 CTR: c0000000007eff60 REGS: c0000000fffa3a70 TRAP: 0300 Tainted: G OE NX (4.4.49-92.11-default) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22008042 XER: 20000008 CFAR: c000000000008468 DAR: 0000000000000001 DSISR: 40000000 SOFTE: 0 GPR00: d000000003886824 c0000000fffa3cf0 d000000003894118 0000000000000000 GPR04: 0000000000000000 0000000000000000 c000000001249da0 0000000000000000 GPR08: 000000000000000e 0000000000000000 c0000000ccb00000 d000000003889180 GPR12: c0000000007eff60 c000000007af4c00 0000000000000001 c0000000010def30 GPR16: c00000007f9b8000 c000000000b98c30 c00000007f9b8080 c000000000bab858 GPR20: 0000000000000005 0000000000000000 c0000000ff5d7e80 c0000000f809f648 GPR24: c0000000ff5d7ec8 0000000000000000 0000000000000000 c0000000ccb001a0 GPR28: 000000000000000a c0000000f809f600 c0000000fd4cd900 c0000000f9cd5b00 NIP [d000000003886824] ibmvnic_interrupt_tx+0x114/0x380 [ibmvnic] LR [d000000003886824] ibmvnic_interrupt_tx+0x114/0x380 [ibmvnic] Call Trace: [c0000000fffa3cf0] [d000000003886824] ibmvnic_interrupt_tx+0x114/0x380 [ibmvnic] (unreliable) [c0000000fffa3dd0] [c000000000132940] __handle_irq_event_percpu+0x90/0x2e0 [c0000000fffa3e90] [c000000000132bcc] handle_irq_event_percpu+0x3c/0x90 [c0000000fffa3ed0] [c000000000132c88] handle_irq_event+0x68/0xc0 [c0000000fffa3f00] [c000000000137edc] handle_fasteoi_irq+0xec/0x250 [c0000000fffa3f30] [c000000000131b04] generic_handle_irq+0x54/0x80 [c0000000fffa3f60] [c000000000011190] __do_irq+0x80/0x1d0 [c0000000fffa3f90] [c0000000000248d8] call_do_irq+0x14/0x24 [c00000007f9bb9e0] [c000000000011380] do_IRQ+0xa0/0x120 [c00000007f9bba40] [c000000000002594] hardware_interrupt_common+0x114/0x180 Signed-off-by:Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
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Nathan Fontenot authored
We should not be releasing the crq's when calling close for the adapter, these need to remain open to facilitate operations such as updating the mac address. The crq's should be released in the adpaters remove routine. Additionally, we need to call release_reources from remove. This corrects the scenario of trying to remove an adapter that has only been probed. Signed-off-by:
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Nathan Fontenot authored
The inflight list used to track memory that is allocated for crq that are inflight is not needed. The one piece of the inflight list that does need to be cleaned at module exit is the error buffer list which is already attached to the adapter struct. This patch removes the inflight list and moves checking the error buffer list to ibmvnic_remove. Signed-off-by:
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Brian King authored
Since the primary CRQ is only used for service functions and not in the performance path, simplify the code a bit and avoid disabling the IRQ. Signed-off-by:
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Brian King authored
Replace a couple of modifications of an atomic followed by a read of the atomic, which is no longer atomic, to use atomic_XX_return variants to avoid race conditions. Signed-off-by:
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Brian King authored
Make sure we unregister long term buffers from the adapter prior to DMA unmapping it and freeing the buffer. Failure to do so could result in a DMA to a now invalid address. Signed-off-by:
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Murilo Fossa Vicentini authored
The ibmvnic_change_mac_addr struct alignment was not matching the defined format in PAPR+, it had the reserved and return code fields swapped. As a consequence, the CHANGE_MAC_ADDR_RSP commands were being improperly handled and executed even when the operation wasn't successfully completed by the system firmware. Also changing the endianness of the debug message to make it easier to parse the CRQ content. Signed-off-by:
Murilo Fossa Vicentini <muvic@linux.vnet.ibm.com> Signed-off-by:
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Thomas Falcon authored
Add reporting of errors when releasing sub-crqs fails. Signed-off-by:
Thomas Falcon <tlfalcon@us.ibm.com> Signed-off-by:
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Arnd Bergmann authored
gcc points out an useless assignment that was added during code refactoring: drivers/net/ethernet/cavium/liquidio/lio_ethtool.c: In function 'octnet_intrmod_callback': drivers/net/ethernet/cavium/liquidio/lio_ethtool.c:1315:59: error: parameter 'oct_dev' set but not used [-Werror=unused-but-set-parameter] This is harmless but can clearly be remove to avoid the warning. Fixes: 50c0add5 ("liquidio: refactor interrupt moderation code") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Matthew Whitehead authored
Constants used for tuning are generally a bad idea, especially as hardware changes over time. Replace the constant 2 jiffies with sysctl variable netdev_budget_usecs to enable sysadmins to tune the softirq processing. Also document the variable. For example, a very fast machine might tune this to 1000 microseconds, while my regression testing 486DX-25 needs it to be 4000 microseconds on a nearly idle network to prevent time_squeeze from being incremented. Version 2: changed jiffies to microseconds for predictable units. Signed-off-by:
Matthew Whitehead <tedheadster@gmail.com> Signed-off-by:
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David S. Miller authored
Craig Gallek says: ==================== ip_tunnel: Allow policy-based routing through tunnels iproute2 changes to follow. Example usage: ip link add gre-test type gre local 10.0.0.1 remote 10.0.0.2 fwmark 0x4 ip -detail link show gre-test ... ip link set gre-test type gre fwmark 0 ==================== Signed-off-by: -
Craig Gallek authored
This feature allows the administrator to set an fwmark for packets traversing a tunnel. This allows the use of independent routing tables for tunneled packets without the use of iptables. There is no concept of per-packet routing decisions through IPv4 tunnels, so this implementation does not need to work with per-packet route lookups as the v6 implementation may (with IP6_TNL_F_USE_ORIG_FWMARK). Further, since the v4 tunnel ioctls share datastructures (which can not be trivially modified) with the kernel's internal tunnel configuration structures, the mark attribute must be stored in the tunnel structure itself and passed as a parameter when creating or changing tunnel attributes. Signed-off-by:
Craig Gallek <kraig@google.com> Signed-off-by:
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Craig Gallek authored
This feature allows the administrator to set an fwmark for packets traversing a tunnel. This allows the use of independent routing tables for tunneled packets without the use of iptables. Signed-off-by:
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Florian Fainelli authored
tag_lan9303.c does check for a NULL dst but that's already checked by dsa_switch_rcv() one layer above. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Acked-by:
Juergen Borleis <jbe@pengutronix.de> Signed-off-by:
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- 20 Apr, 2017 18 commits
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Dan Carpenter authored
The labels were out of order, so it either could result in an Oops or a leak. Fixes: 48935bbb ("net/mlx5e: IPoIB, Add netdevice profile skeleton") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Leon Romanovsky <leonro@mellanox.com> Signed-off-by:
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Dan Carpenter authored
We've got the number of longs, yes, but we should multiply by sizeof(long) to get the number of bytes needed. Fixes: e4917d46 ("qede: Add aRFS support") Signed-off-by:
Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by:
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Chema Gonzalez authored
Signed-off-by:
Chema Gonzalez <chemag@gmail.com> Signed-off-by:
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Jamal Hadi Salim authored
Signed-off-by:
Jamal Hadi Salim <jhs@mojatatu.com> Acked-by:
Jiri Pirko <jiri@resnulli.us> Signed-off-by:
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Jamal Hadi Salim authored
Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queueDavid S. Miller authored
Jeff Kirsher says: ==================== 10GbE Intel Wired LAN Driver Updates 2017-04-18 This series contains updates to mainly ixgbe with only one ixgbevf change. Usha adds a check to ensure the creation of number of VF's is valid based on the traffic classes configured, all to avoid transmit hangs. Joe Perches reduces the use of pr_cont since the output can be interleaved by other processes. Tony cleans up the code overwriting the KX4 config, which is configured by the NVM. Adds a check for MMNGC.MNG_VETO, to resolve an issue where we were getting a link loss for the BMC when loading the driver. Don fixes up SGMII x553 config details which were missed in earlier implementations. Added support for x552 XFI backplane interface support. Cleaned up an unused define, which was causing confusion on supported devices. Emil fixes a link issue on KR parts by making sure the default setting is set. Refactors the code so that the code for allocating memory for the list of MAC addresses that the VFs can use into its own function. Made some code cleans to help readability and ensure notification of SRIOV being enabled is done upon completion. Fixed an issue where if we failed to allocate vfinfo in __ixgbe_enable_sriov() the driver would crash with a NULL pointer dereference. Philippe Reynes updates ixgbevf to use the new API for {get|set}_link_ksettings. Alex increases the headroom allocation when using build_skb() on a system with 4K pages. Fixed an issue in ixgbe_dump() where we were no longer clearing the status bit. ==================== Signed-off-by: -
subashab@codeaurora.org authored
David Ahern reported that 5425077d ("net: ipv6: Add early demux handler for UDP unicast") breaks udp_l3mdev_accept=0 since early demux for IPv6 UDP was doing a generic socket lookup which does not require an exact match. Fix this by making UDPv6 early demux match connected sockets only. v1->v2: Take reference to socket after match as suggested by Eric v2->v3: Add comment before break Fixes: 5425077d ("net: ipv6: Add early demux handler for UDP unicast") Reported-by:
David Ahern <dsa@cumulusnetworks.com> Signed-off-by:
Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Cc: Eric Dumazet <edumazet@google.com> Acked-by:
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David S. Miller authored
Eric Dumazet says: ==================== tcp: address two poll() flakes Some packetdrill tests are failing when host kernel is using ASAN or other debugging infrastructure. I was able to fix the flakes by making sure we were not sending wakeup events too soon. ==================== Signed-off-by: -
Eric Dumazet authored
When using TCP FastOpen for an active session, we send one wakeup event from tcp_finish_connect(), right before the data eventually contained in the received SYNACK is queued to sk->sk_receive_queue. This means that depending on machine load or luck, poll() users might receive POLLOUT events instead of POLLIN|POLLOUT To fix this, we need to move the call to sk->sk_state_change() after the (optional) call to tcp_rcv_fastopen_synack() Signed-off-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
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Eric Dumazet authored
When a RST packet is processed, we send two wakeup events to interested polling users. First one by a sk->sk_error_report(sk) from tcp_reset(), followed by a sk->sk_state_change(sk) from tcp_done(). Depending on machine load and luck, poll() can either return POLLERR, or POLLIN|POLLOUT|POLLERR|POLLHUP (this happens on 99 % of the cases) This is probably fine, but we can avoid the confusion by reordering things so that we have more TCP fields updated before the first wakeup. This might even allow us to remove some barriers we added in the past. Signed-off-by:
Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== mlxsw: Allow flow based forwarding in OVS This patchset does some fixes so the HW is setup correctly to do flow-based (ACL based) forwarding for OVS-enslaved port. The first patch is just trivial fix spotted on the way. Patches 2-4 take care of proper FID setup which HW needs in order to for ACL based forwarding. The 7th patch (with dependency of patch 5 and 6) takes care of proper setup of ports that are enslaved in OVS. The last patch implements new FID miss trap that is used to push packets belonging to unknown flows to kernel and userspace. ==================== Signed-off-by: -
Jiri Pirko authored
When there is no FID set for a specific packet, the HW will drop it. However, by default these packets are useful to be delivered to CPU as it can inspect them and program HW accordingly. So add this trap. This would only ever happen when port is enslaved to an OVS master. Otherwise, packets would be dropped during VLAN / STP filtering, before FID classification. Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Reviewed-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
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Jiri Pirko authored
>From now on, a port can become a slave of OVS master. All vlans are enabled, STP state is set to "forwarding". It is up to the OVS userspace daemon to setup the flows either in kernel or in HW using TC flower offload. Signed-off-by:
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Jiri Pirko authored
To find out if a netdev is an OVS port. Signed-off-by:
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Jiri Pirko authored
So far, mlxsw_sp_port_vlan_set range is limited by MLXSW_REG_SPVM_REC_MAX_COUNT. In spectrum_switchdev code this is wrapped up by a helper function which actually does multiple calls to FW for bigger ranges. Move the code into mlxsw_sp_port_vlan_set and use it always. That allows caller not to care about the range. Signed-off-by:
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Jiri Pirko authored
HW requires the FID to be valid in order for the forward action to work. So regardless of the current FID validity, just set the dummy FID which would do the trick. Signed-off-by:
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Jiri Pirko authored
For forwarding using ACL action, HW needs a valid FID to be setup. It does not actually use it, so it can be any valid FID. So create a dummy FID only for this purpose. Signed-off-by:
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Jiri Pirko authored
Implement part of multipurpose Virtual Router and Forwarding Domain Action that takes care of setting up FID. We need to use it to be able to forward packets using ACL action when no FID is associated on RX. Signed-off-by:
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