- 21 Jun, 2017 29 commits
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Daniel Borkmann authored
In order to be able to retrieve the attached programs from cls_bpf and act_bpf, we need to expose the prog ids via netlink so that an application can later on get an fd based on the id through the BPF_PROG_GET_FD_BY_ID command, and dump related prog info via BPF_OBJ_GET_INFO_BY_FD command for bpf(2). Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Paolo Abeni authored
for connected socket, the incoming_cpu field in the sock struct is not going to change frequently, but we are setting it unconditionally for each packet. Since sk_incoming_cpu and sk_flags share the same cacheline, and the latter is access by udp_recvmsg(), this cause a cache miss for each packet for UDP connected socket. With this patch, we set the incoming cpu field only when the ingress cpu really changes. This gives a small but measurable performance improvement for connected UDP socket. Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
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David Herrmann authored
This adds the new getsockopt(2) option SO_PEERGROUPS on SOL_SOCKET to retrieve the auxiliary groups of the remote peer. It is designed to naturally extend SO_PEERCRED. That is, the underlying data is from the same credentials. Regarding its syntax, it is based on SO_PEERSEC. That is, if the provided buffer is too small, ERANGE is returned and @optlen is updated. Otherwise, the information is copied, @optlen is set to the actual size, and 0 is returned. While SO_PEERCRED (and thus `struct ucred') already returns the primary group, it lacks the auxiliary group vector. However, nearly all access controls (including kernel side VFS and SYSVIPC, but also user-space polkit, DBus, ...) consider the entire set of groups, rather than just the primary group. But this is currently not possible with pure SO_PEERCRED. Instead, user-space has to work around this and query the system database for the auxiliary groups of a UID retrieved via SO_PEERCRED. Unfortunately, there is no race-free way to query the auxiliary groups of the PID/UID retrieved via SO_PEERCRED. Hence, the current user-space solution is to use getgrouplist(3p), which itself falls back to NSS and whatever is configured in nsswitch.conf(3). This effectively checks which groups we *would* assign to the user if it logged in *now*. On normal systems it is as easy as reading /etc/group, but with NSS it can resort to quering network databases (eg., LDAP), using IPC or network communication. Long story short: Whenever we want to use auxiliary groups for access checks on IPC, we need further IPC to talk to the user/group databases, rather than just relying on SO_PEERCRED and the incoming socket. This is unfortunate, and might even result in dead-locks if the database query uses the same IPC as the original request. So far, those recursions / dead-locks have been avoided by using primitive IPC for all crucial NSS modules. However, we want to avoid re-inventing the wheel for each NSS module that might be involved in user/group queries. Hence, we would preferably make DBus (and other IPC that supports access-management based on groups) work without resorting to the user/group database. This new SO_PEERGROUPS ioctl would allow us to make dbus-daemon work without ever calling into NSS. Cc: Michal Sekletar <msekleta@redhat.com> Cc: Simon McVittie <simon.mcvittie@collabora.co.uk> Reviewed-by:
Tom Gundersen <teg@jklm.no> Signed-off-by:
David Herrmann <dh.herrmann@gmail.com> Signed-off-by:
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Paolo Abeni authored
On UDP packets processing, if the BH is the bottle-neck, it always sees a cache miss while updating rmem_alloc; try to avoid it prefetching the value as soon as we have the socket available. Performances under flood with multiple NIC rx queues used are unaffected, but when a single NIC rx queue is in use, this gives ~10% performance improvement. Signed-off-by:
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Chad Dupuis authored
When CONFIG_QED_RDMA isn't defined, we'd hit the following: /include/linux/qed/qede_rdma.h:84:19: warning: ‘qede_rdma_dev_add’ used but never defined [enabled by default] static inline int qede_rdma_dev_add(struct qede_dev *dev); Fixes: bbfcd1e8 ("qed*: Set rdma generic functions prefix") Signed-off-by:
Chad Dupuis <chad.dupuis@cavium.com> Signed-off-by:
Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by:
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hayeswang authored
Replace VLAN_HLEN and CRC_SIZE with ETH_FCS_LEN. Signed-off-by:
Hayes Wang <hayeswang@realtek.com> 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: ==================== 40GbE Intel Wired LAN Driver Updates 2017-06-20 This series contains updates to i40e and i40evf only. Björn adds additional XDP support for i40e, by adding pass and drop actions and XDP_TX action support. Jake fixes a possible NULL pointer dereference in i40evf_get_ethtool_stats() which could occur if the VF fails to recover from a reset, and then a user requests statistics. Changed the use of dev_info() to dev_dbg() for vf_capability client routine so that the standard log is not spammed with this information which "might" cause administrators to worry. Also added more code comments to help explain why udp_port has be in host byte order and to avoid future changes which may cause this to break. Fixed the holding of the RTNL lock for the entire reset routine, reduced the scope so that the reset function will handle its own lock, so that we do not have to wrap every reference to i40e_do_reset() with RTNL lock/unlock. Alice updates flags related to firmware interactions for WoL and admin queue command address with the correct value. Sudheer makes a fix to ensure that the array is not accessed past the size of the array. Greg fixes the parsing of firmware 4.33 admin queue commmand "Get CEE DCBX PER CFG" because the firmware now creates the oper_prio_tc nibbles reversed from those in the CDD Priority Group sub-TLV. Carolyn adds a check and message to let users know that when in MFP mode, changing RSS hash input set is not supported. Shannon makes the partition bandwidth control more generic since it is not in just one form of multi-function partitioning (MFP). Also fixes a bug which was causing the firmware confusion in some reset sequences, when we were disabling interrupts and we were clearing the whole register. Instead we should only be clearing the CAUSE_ENA bit when disabling interrupts. Filip adds support for OEM firmware version, so that if a OEM specific adapter is detected, ethtool reports the OEM product version in the firmware version string instead of etrack id. Alan fixes a bug where the driver was not correctly exiting overflow promiscuous mode, which can happen if "too many" MAC filters are added, putting the driver into overflow promiscuous mode, and the filters are then removed. The bug occurs because the conditional for toggling promiscuous mode was only be executed when enabled and not when it was disabled. ==================== Signed-off-by: -
David S. Miller authored
Julien Gomes says: ==================== ipmr/ip6mr: add Netlink notifications on cache reports Currently, all ipmr/ip6mr cache reports are sent through the mroute/mroute6 socket only. This forces the use of a single socket for mroute programming, cache reports and, regarding ipmr, IGMP messages without Router Alert option reception. The present patches are aiming to send Netlink notifications in addition to the existing igmpmsg/mrt6msg to give user programs a way to handle cache reports in parallel with multiple sockets other than the mroute/mroute6 socket. Changes in v2: - Changed attributes naming from {IPMRA,IP6MRA}_CACHEREPORTA_* to {IPMRA,IP6MRA}_CREPORT_* - Improved packet data copy to handle non-linear packets in ipmr/ip6mr cache report Netlink notification creation - Added two rtnetlink groups with restricted-binding - Changed cache report notified groups from RTNL_{IPV4,IPV6}_MROUTE to the new restricted groups in ipmr/ip6mr Changes in v3: - Put message size calculation for {igmp,mrt6}msg_netlink_event in separate functions - Increased vif id attributes size from u8 to u32 ==================== Signed-off-by: -
Julien Gomes authored
Add Netlink notifications on cache reports in ip6mr, in addition to the existing mrt6msg sent to mroute6_sk. Send RTM_NEWCACHEREPORT notifications to RTNLGRP_IPV6_MROUTE_R. MSGTYPE, MIF_ID, SRC_ADDR and DST_ADDR Netlink attributes contain the same data as their equivalent fields in the mrt6msg header. PKT attribute is the packet sent to mroute6_sk, without the added mrt6msg header. Suggested-by:
Ryan Halbrook <halbrook@arista.com> Signed-off-by:
Julien Gomes <julien@arista.com> Reviewed-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
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Julien Gomes authored
Add Netlink notifications on cache reports in ipmr, in addition to the existing igmpmsg sent to mroute_sk. Send RTM_NEWCACHEREPORT notifications to RTNLGRP_IPV4_MROUTE_R. MSGTYPE, VIF_ID, SRC_ADDR and DST_ADDR Netlink attributes contain the same data as their equivalent fields in the igmpmsg header. PKT attribute is the packet sent to mroute_sk, without the added igmpmsg header. Suggested-by:
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Julien Gomes authored
Add RTNLGRP_{IPV4,IPV6}_MROUTE_R as two new restricted groups for the NETLINK_ROUTE family. Binding to these groups specifically requires CAP_NET_ADMIN to allow multicast of sensitive messages (e.g. mroute cache reports). Suggested-by: -
Julien Gomes authored
New NEWCACHEREPORT message type to be used for cache reports sent via Netlink, effectively allowing splitting cache report reception from mroute programming. Suggested-by:
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Arnd Bergmann authored
Changing from a memcpy to per-member comparison left the size variable unused: net/ipv4/tcp_ipv4.c: In function 'tcp_md5_do_lookup': net/ipv4/tcp_ipv4.c:910:15: error: unused variable 'size' [-Werror=unused-variable] This does not show up when CONFIG_IPV6 is enabled, but the variable can be removed either way, along with the now unused assignment. Fixes: 6797318e ("tcp: md5: add an address prefix for key lookup") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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yuan linyu authored
in my commit b952f4df, - *(u8 *)skb_put(skb_out, 1) = (u8)(accm >> 24); \ + skb_put(skb_out, (u8)(accm >> 24)); \ it should skb_put_u8() Fixes: b952f4df ("net: manual clean code which call skb_put_[data:zero])") Signed-off-by:
yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn> Signed-off-by:
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Jacob Keller authored
We recently refactored i40e_do_reset() and its friends to be able to hold the RTNL lock only for the portions that actually need to be protected. However, a separate refactoring added several new callers of these functions during the PCIe error recovery and suspend/resume cycles. When merging the changes together, it was not noticed that we could reduce the RTNL scope by letting the reset function handle the lock itself, as previously it was not possible. Fix this by replacing these call sites to indicate that the reset function should handle its own lock. This enables multiple PFs to reset or resume simultaneously without serializing the resets via the RTNL lock. The end result is that on systems with lots of PFs and VFs the resets don't stall waiting for each other to finish. It is probable that we can also do the same for i40e_do_reset_safe, but this author did not research that change carefully enough to be confident. Signed-off-by:
Jacob Keller <jacob.e.keller@intel.com> Tested-by:
Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Catherine Sullivan authored
When IWARP is enabled, we weren't clearing the PE_CRITERR, just logging it and removing it from the mask. We need to do a corer to reset the PE_CRITERR register, so set the bit for that as we handle the interrupt. We should also be checking for the error against the PFINT_ICR0 register, and only need to clear it in the value getting written to PFINT_ICR0_ENA. Signed-off-by:
Catherine Sullivan <catherine.sullivan@intel.com> Signed-off-by:
Mitch Williams <mitch.a.williams@intel.com> Tested-by:
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Shannon Nelson authored
When disabling interrupts, we should only be clearing the CAUSE_ENA bit, not clearing the whole register. Clearing the whole register sets the NEXTQ_IDX field to 0 instead of 0x7ff which can confuse the Firmware in some reset sequences. Signed-off-by:
Shannon Nelson <shannon.nelson@intel.com> Signed-off-by:
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Alan Brady authored
There exists a bug in which the driver does not correctly exit overflow promiscuous mode. This can occur if "too many" mac filters are added, putting the driver into overflow promiscuous mode, and the filters are then removed. When the failed filters are removed, the driver reports exiting overflow promiscuous mode which is correct, however traffic continues to be received as if in promiscuous mode still. The bug occurs because the conditional for toggling promiscuous mode was set to only execute when promiscuous mode was enabled and not when it was disabled as well. This patch fixes the conditional to correctly execute when promiscuous mode is toggled and not just enabled. Without this patch, the driver is unable to correctly exit overflow promiscuous mode. Signed-off-by:
Alan Brady <alan.brady@intel.com> Tested-by:
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Filip Sadowski authored
This patch adds support for OEM firmware version. If OEM specific adapter is detected ethtool reports OEM product version in firmware version string instead of etrack id. Signed-off-by:
Filip Sadowski <filip.sadowski@intel.com> Tested-by:
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Shannon Nelson authored
Partition bandwidth control is not in just one form of MFP (multi-function partitioning), so make the code more generic and be sure to nudge the Tx scheduler for all MFP. Copyright updated to 2017. Signed-off-by:
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Carolyn Wyborny authored
This patch adds a check and message if the device is in MFP mode as changing RSS input set is not supported in MFP mode. Signed-off-by:
Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by:
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Greg Bowers authored
Changes parsing of FW 4.33 AQ command Get CEE DCBX OPER CFG (0x0A07). Change is required because FW now creates the oper_prio_tc nibbles reversed from those in the CEE Priority Group sub-TLV. This change will only apply to FW 4.33 as future FW versions will use a different function to parse the CEE data. Signed-off-by:
Greg Bowers <gregory.j.bowers@intel.com> Tested-by:
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Sudheer Mogilappagari authored
This is a fix for the static code analysis issue where dcbcfg->numapps could be greater than size of array (i.e dcbcfg->app[I40E_DCBX_MAX_APPS]). The fix makes sure that the array is not accessed past the size of of the array (i.e. I40E_DCBX_MAX_APPS). Copyright updated to 2017. Signed-off-by:
Sudheer Mogilappagari <sudheer.mogilappagari@intel.com> Tested-by:
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Jacob Keller authored
The firmware expects the port number passed when setting up the UDP tunnel configuration to be in Little Endian format. The i40e_aq_add_udp_tunnel command byte swaps the value from host order to Little Endian. Since commit fe0b0cd9 ("i40e: send correct port number to AdminQ when enabling UDP tunnels") we've correctly sent the value in host order. Let's also add a comment to the function explaining that it must be in host order, as the port numbers are commonly stored as Big Endian values. Signed-off-by:
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Jacob Keller authored
When searching for the vf_capability client routine, dev_info() was used, instead of the normal dev_dbg(). This causes the message to be displayed at standard log levels which can cause administrators to worry. Avoid this by using dev_dbg instead. Copyright updated to 2017. Signed-off-by:
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Alice Michael authored
Update a few flags related to FW interactions. Copyright updated to 2017. Signed-off-by:
Alice Michael <alice.michael@intel.com> Tested-by:
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Jacob Keller authored
The variable num_active_queues represents the number of active queues we have for the device. We assign this pretty early in i40evf_init_subtask. Several code locations are written with loops over the tx_rings and rx_rings structures, which don't get allocated until i40evf_alloc_queues, and which get freed by i40evf_free_queues. These call sites were written under the assumption that tx_rings and rx_rings would always be allocated at least when num_active_queues is non-zero. Lets fix this by moving the assignment into the function where we allocate queues. We'll use a temporary variable for storage so that we don't assign the value in the adapter structure until after the rings have been set up. Finally, when we free the queues, we'll clear the value to ensure that we do not loop over the rings memory that no longer exists. This resolves a possible NULL pointer dereference in i40evf_get_ethtool_stats which could occur if the VF fails to recover from a reset, and then a user requests statistics. Signed-off-by:
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Björn Töpel authored
This patch adds proper XDP_TX action support. For each Tx ring, an additional XDP Tx ring is allocated and setup. This version does the DMA mapping in the fast-path, which will penalize performance for IOMMU enabled systems. Further, debugfs support is not wired up for the XDP Tx rings. Signed-off-by:
Björn Töpel <bjorn.topel@intel.com> Tested-by:
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Björn Töpel authored
This commit adds basic XDP support for i40e derived NICs. All XDP actions will end up in XDP_DROP. Signed-off-by:
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- 20 Jun, 2017 11 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== mlx5-updates-2017-06-20 (mlx5 IPoIB updates) This series includes updates to mlx5 IPoIB netdevice driver (mlx5i), 1. We move ipoib files into separate directory, to allow it to grow separately in its own space 2. Remove HW update carrier logic from IPoIB and VF representors profiles. 3. Add basic ethtool support. (Rings options/statistics and driver info). 4. Change MTU support. 5. Xmit path statistics reporting. 6. add PTP support. For the new ethtool ops, PTP (ioctl) and change_mtu ndos in IPoIB, we didn't add new implementation or new logic, we only reused those callbacks from the already existing mlx5e (ethernet netdevice profile) and exposed them in IPoIB netdevice/ethtool ops. ==================== Signed-off-by: -
David S. Miller authored
Julian Wiedmann says: ==================== s390/net updates, part 2 (v2) thanks for the feedback. Here's an updated patchset that honours the reverse christmas tree and drops the __packed attribute. Please apply. ==================== Signed-off-by: -
Julian Wiedmann authored
When a s390 guest runs on a z/VM host that's part of a SSI cluster, it can be migrated to a different host. In this case, the MAC address it originally obtained on the old host may be re-assigned to a new guest. This would result in address conflicts between the two guests. When running as z/VM guest, use the diag26c MAC Service to obtain a hypervisor-managed MAC address. The MAC Service is SSI-aware, and won't re-assign the address after the guest is migrated to a new host. This patch adds support for the z/VM MAC Service on L2 devices. Signed-off-by:
Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
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Julian Wiedmann authored
Implement support for the hypervisor diagnose 0x26c ('Access Certain System Information'). It passes a request buffer and a subfunction code, and receives a response buffer and a return code. Also add the scaffolding for the 'MAC Services' subfunction. It may be used by network devices to obtain a hypervisor-managed MAC address. Signed-off-by:Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Julian Wiedmann authored
There's two spots in qeth_send_packet() where we don't accurately account for transmitted packing buffers in qeth's performance statistics: 1) when flushing the current buffer due to insufficient size, and the next buffer is not EMPTY, we need to account for that flushed buffer. 2) when synchronizing with the TX completion code, we reset flush_count and thus forget to account for any previously flushed buffers. Reported-by:
Nils Hoppmann <niho@de.ibm.com> Signed-off-by:
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Kittipon Meesompop authored
add ipa return codes for Bridgeport (HiperSockets and OSA) according to system level design. Signed-off-by:
Kittipon Meesompop <kmeesomp@linux.vnet.ibm.com> Reviewed-by:
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Xin Long authored
It's a bad thing not to handle errors when updating asoc. The memory allocation failure in any of the functions called in sctp_assoc_update() would cause sctp to work unexpectedly. This patch is to fix it by aborting the asoc and reporting the error when any of these functions fails. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Xin Long authored
local_cork is used to decide if it should uncork asoc outq after processing some cmds, and it is set when replying or sending msgs. local_cork should always have the same value with current asoc q->cork in some way. The thing is when changing to a new asoc by cmd SET_ASOC, local_cork may not be consistent with the current asoc any more. The cmd seqs can be: SCTP_CMD_UPDATE_ASSOC (asoc) SCTP_CMD_REPLY (asoc) SCTP_CMD_SET_ASOC (new_asoc) SCTP_CMD_DELETE_TCB (new_asoc) SCTP_CMD_SET_ASOC (asoc) SCTP_CMD_REPLY (asoc) The 1st REPLY makes OLD asoc q->cork and local_cork both are 1, and the cmd DELETE_TCB clears NEW asoc q->cork and local_cork. After asoc goes back to OLD asoc, q->cork is still 1 while local_cork is 0. The 2nd REPLY will not set local_cork because q->cork is already set and it can't be uncorked and sent out because of this. To keep local_cork consistent with the current asoc q->cork, this patch is to uncork the old asoc if local_cork is set before changing to the new one. Note that the above cmd seqs will be used in the next patch when updating asoc and handling errors in it. Suggested-by:
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Xin Long authored
Patch "call inet_add_protocol after register_pernet_subsys in dccp_v4_init" fixed a null pointer dereference issue for dccp_ipv4 module. The same fix is needed for dccp_ipv6 module. Signed-off-by:
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Xin Long authored
Now dccp_ipv4 works as a kernel module. During loading this module, if one dccp packet is being recieved after inet_add_protocol but before register_pernet_subsys in which v4_ctl_sk is initialized, a null pointer dereference may be triggered because of init_net.dccp.v4_ctl_sk is 0x0. Jianlin found this issue when the following call trace occurred: [ 171.950177] BUG: unable to handle kernel NULL pointer dereference at 0000000000000110 [ 171.951007] IP: [<ffffffffc0558364>] dccp_v4_ctl_send_reset+0xc4/0x220 [dccp_ipv4] [...] [ 171.984629] Call Trace: [ 171.984859] <IRQ> [ 171.985061] [ 171.985213] [<ffffffffc0559a53>] dccp_v4_rcv+0x383/0x3f9 [dccp_ipv4] [ 171.985711] [<ffffffff815ca054>] ip_local_deliver_finish+0xb4/0x1f0 [ 171.986309] [<ffffffff815ca339>] ip_local_deliver+0x59/0xd0 [ 171.986852] [<ffffffff810cd7a4>] ? update_curr+0x104/0x190 [ 171.986956] [<ffffffff815c9cda>] ip_rcv_finish+0x8a/0x350 [ 171.986956] [<ffffffff815ca666>] ip_rcv+0x2b6/0x410 [ 171.986956] [<ffffffff810c83b4>] ? task_cputime+0x44/0x80 [ 171.986956] [<ffffffff81586f22>] __netif_receive_skb_core+0x572/0x7c0 [ 171.986956] [<ffffffff810d2c51>] ? trigger_load_balance+0x61/0x1e0 [ 171.986956] [<ffffffff81587188>] __netif_receive_skb+0x18/0x60 [ 171.986956] [<ffffffff8158841e>] process_backlog+0xae/0x180 [ 171.986956] [<ffffffff8158799d>] net_rx_action+0x16d/0x380 [ 171.986956] [<ffffffff81090b7f>] __do_softirq+0xef/0x280 [ 171.986956] [<ffffffff816b6a1c>] call_softirq+0x1c/0x30 This patch is to move inet_add_protocol after register_pernet_subsys in dccp_v4_init, so that v4_ctl_sk is initialized before any incoming dccp packets are processed. Reported-by:
Jianlin Shi <jishi@redhat.com> Signed-off-by:
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Govindarajulu Varadarajan authored
With -Wformat-truncation, gcc throws the following warning. Fix this by increasing the size of devname to accommodate 15 character netdev interface name and description. Remove length format precision for %s. We can fit entire name. Also increment the version. drivers/net/ethernet/cisco/enic/enic_main.c: In function ‘enic_open’: drivers/net/ethernet/cisco/enic/enic_main.c:1740:15: warning: ‘%u’ directive output may be truncated writing between 1 and 2 bytes into a region of size between 1 and 12 [-Wformat-truncation=] "%.11s-rx-%u", netdev->name, i); ^~ drivers/net/ethernet/cisco/enic/enic_main.c:1740:5: note: directive argument in the range [0, 16] "%.11s-rx-%u", netdev->name, i); ^~~~~~~~~~~~~ drivers/net/ethernet/cisco/enic/enic_main.c:1738:4: note: ‘snprintf’ output between 6 and 18 bytes into a destination of size 16 snprintf(enic->msix[intr].devname, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sizeof(enic->msix[intr].devname), ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "%.11s-rx-%u", netdev->name, i); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by:Govindarajulu Varadarajan <gvaradar@cisco.com> Signed-off-by:
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