- 02 May, 2018 15 commits
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Heiner Kallweit authored
r810x_pll_power_down/up and r8168_pll_power_down/up have a lot in common, so we can simplify the code by merging the former into the latter. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Heiner Kallweit authored
The functionality of 810x_phy_power_up/down is covered by the default clause in 8168_phy_power_up/down. Therefore we don't need these functions. Signed-off-by:
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Heiner Kallweit authored
RTL_GIGA_MAC_VER_23/24 are configured by rtl_hw_start_8168cp_2() and rtl_hw_start_8168cp_3() respectively which both apply CPCMD_QUIRK_MASK, thus clearing bit ASF. Bit ASF isn't set at any other place in the driver, therefore this check can be removed. Signed-off-by:
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David S. Miller authored
Ursula Braun says: ==================== net/smc: small features 2018/04/30 here are 4 smc patches for net-next covering small new features in different areas: * link health check * diagnostics for IPv6 smc sockets * ioctl * improvement for vlan determination v2 changes: * better title * patch 2 - remove compile problem for disabled CONFIG_IPV6 ==================== Signed-off-by: -
Ursula Braun authored
An SMC link group is bound to a specific vlan_id. Its link uses the RoCE-GIDs established for the specific vlan_id. This patch makes sure the appropriate vlan_id is determined for stacked scenarios like for instance a master bonding device with vlan devices enslaved. Signed-off-by:
Ursula Braun <ubraun@linux.ibm.com> Signed-off-by:
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Ursula Braun authored
SIOCINQ returns the amount of unread data in the RMB. SIOCOUTQ returns the amount of unsent or unacked sent data in the send buffer. SIOCOUTQNSD returns the amount of data prepared for sending, but not yet sent. Signed-off-by:
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Karsten Graul authored
Update smc_diag.c to support ipv6 addresses on the diagnosis interface. Signed-off-by:
Karsten Graul <kgraul@linux.ibm.com> Signed-off-by:
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Karsten Graul authored
Add periodic LLC testlink support to ensure the link is still active. The interval time is initialized using the value of sysctl_tcp_keepalive_time. Signed-off-by:
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: Reject unsupported FIB configurations Recently it became possible for listeners of the FIB notification chain to veto operations such as addition of routes and rules. Adjust the mlxsw driver to take advantage of it and return an error for unsupported FIB rules and for routes configured after the abort mechanism was triggered (due to exceeded resources for example). v2: * Change error code in first patch to -EOPNOTSUPP (David Ahern). ==================== Signed-off-by: -
Ido Schimmel authored
We currently do not perform accounting in the driver and thus can't reject routes before resources are exceeded. However, in order to make users aware of the fact that routes are no longer offloaded we can return an error for routes configured after the abort mechanism was triggered. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Acked-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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Ido Schimmel authored
Since commit 9776d325 ("net: Move call_fib_rule_notifiers up in fib_nl_newrule") it is possible to forbid the installation of unsupported FIB rules. Have mlxsw return an error for non-default FIB rules in addition to the existing extack message. Example: # ip rule add from 198.51.100.1 table 10 Error: mlxsw_spectrum: FIB rules not supported. Note that offload is only aborted when non-default FIB rules are already installed and merely replayed during module initialization. Signed-off-by:
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Ganesh Goudar authored
Add device id's 0x5019, 0x501a and 0x501b for T5 cards. Signed-off-by:
Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by:
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Kees Cook authored
In the quest to remove all stack VLAs from the kernel[1], this switches the "status" stack buffer to use the existing small (8) upper bound on how many queues can be checked for DMA, and adds a sanity-check just to make sure it doesn't operate under pathological conditions. [1] http://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.comSigned-off-by:
Kees Cook <keescook@chromium.org> Reviewed-by:
Jose Abreu <joabreu@synopsys.com> Signed-off-by:
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Raghu Vatsavayi authored
NIC firmware does not support disabling rx vlan offload, but the VF driver incorrectly indicates that it is supported. The PF driver already does the correct indication by clearing the NETIF_F_HW_VLAN_CTAG_RX bit in its netdev->hw_features. So just do the same thing in the VF. Signed-off-by:
Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Acked-by:
Prasad Kanneganti <prasad.kanneganti@cavium.com> Signed-off-by:
Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by:
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Sean Tranchetti authored
Using the udp_v4_check() function to calculate the pseudo header for the newly segmented UDP packets results in assigning the complement of the value to the UDP header checksum field. Always undo the complement the partial checksum value in order to match the case where GSO is not used on the UDP transmit path. Fixes: ee80d1eb ("udp: add udp gso") Signed-off-by:
Sean Tranchetti <stranche@codeaurora.org> Signed-off-by:
Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Acked-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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- 01 May, 2018 25 commits
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Soheil Hassas Yeganeh authored
Signed-off-by:
Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Reviewed-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
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Soheil Hassas Yeganeh authored
Applications with many concurrent connections, high variance in receive queue length and tight memory bounds cannot allocate worst-case buffer size to drain sockets. Knowing the size of receive queue length, applications can optimize how they allocate buffers to read from the socket. The number of bytes pending on the socket is directly available through ioctl(FIONREAD/SIOCINQ) and can be approximated using getsockopt(MEMINFO) (rmem_alloc includes skb overheads in addition to application data). But, both of these options add an extra syscall per recvmsg. Moreover, ioctl(FIONREAD/SIOCINQ) takes the socket lock. Add the TCP_INQ socket option to TCP. When this socket option is set, recvmsg() relays the number of bytes available on the socket for reading to the application via the TCP_CM_INQ control message. Calculate the number of bytes after releasing the socket lock to include the processed backlog, if any. To avoid an extra branch in the hot path of recvmsg() for this new control message, move all cmsg processing inside an existing branch for processing receive timestamps. Since the socket lock is not held when calculating the size of receive queue, TCP_INQ is a hint. For example, it can overestimate the queue size by one byte, if FIN is received. With this method, applications can start reading from the socket using a small buffer, and then use larger buffers based on the remaining data when needed. V3 change-log: As suggested by David Miller, added loads with barrier to check whether we have multiple threads calling recvmsg in parallel. When that happens we lock the socket to calculate inq. V4 change-log: Removed inline from a static function. Signed-off-by:
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David S. Miller authored
Salil Mehta says: ==================== Misc bug fixes for HNS3 Ethernet driver This patch-set presents some miscellaneous bug fixs and cleanups for HNS3 Ethernet Driver. ==================== Signed-off-by: -
Xi Wang authored
Because the current statistics for size 8192~12287 are only valid for GE, the ranges of 8192~9216 and 9217~12287 are valid only for LGE/CGE, and are always 0 for GE interfaces. it is easy to cause confusion when viewing the packet statistics using the command ethtool -S. This patch removes the 8192~12287 range of packet statistics and uses the 8192~9216 and 9217~12287 ranges for statistics. This change depends on the firmware upgrade. Signed-off-by:
Xi Wang <wangxi11@huawei.com> Signed-off-by:
Peng Li <lipeng321@huawei.com> Signed-off-by:
Salil Mehta <salil.mehta@huawei.com> Signed-off-by:
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Yunsheng Lin authored
There are two level of vlan tables in hardware, one is port vlan which is shared by all functions, the other one is function vlan table, each function has it's own function vlan table. Currently, PF sets the port vlan table, and vf sets the function vlan table, which will cause packet lost problem. This patch fixes this problem by setting both vlan table, and use hdev->vlan_table to manage thet port vlan table. Signed-off-by:
Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by:
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Huazhong Tan authored
If head has invlid value then a dead loop can be triggered in hclge_cmd_csq_clean. This patch adds sanity check for this case. Fixes: 68c0a5c7 ("net: hns3: Add HNS3 IMP(Integrated Mgmt Proc) Cmd Interface Support") Signed-off-by:
Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by:
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Fuyun Liang authored
This patch adds a check to support autoneg(ethtool -A) only when PHY is attached with the port. Fixes: e2cb1dec ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support") Signed-off-by:
Fuyun Liang <liangfuyun1@huawei.com> Signed-off-by:
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Huazhong Tan authored
When phy exists, phy_addr must less than PHY_MAX_ADDR. If not, hclge_mac_mdio_config should return error. And for fiber(phy_addr=0xff), it does not need hclge_mac_mdio_config. Signed-off-by:
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Huazhong Tan authored
This patch fixes some of the missed error legs in the initialization function of the ae device. This might cause leaks in case of failure. Fixes: 46a3df9f ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by:
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Huazhong Tan authored
This patch fixes the handling of the check when number of vports are detected to be more than available TPQs. Current handling causes an out of bounds access in hclge_map_tqp(). Fixes: 7df7dad6 ("net: hns3: Refactor the mapping of tqp to vport") Signed-off-by:
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Huazhong Tan authored
This patch fixes the function being used to fetch L4 protocol outer header. Mistakenly skb_inner_transport_header API was being used earlier. Fixes: 76ad4f0e ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Signed-off-by:
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Yunsheng Lin authored
When mac supports DCB, but is in GE mode, it does not support querying pfc stats, firmware returns error when trying to query the pfc stats. this creates a lot of noise in the kernel log when it prints the error log. This patch fixes it by removing the error log, because it already return the error to the user space, so the user should be aware of the error. Signed-off-by:
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Stefan Strogin authored
The intention is to get notified of process failures as soon as possible, before a possible core dumping (which could be very long) (e.g. in some process-manager). Coredump and exit process events are perfect for such use cases (see 2b5faa4c "connector: Added coredumping event to the process connector"). The problem is that for now the process-manager cannot know the parent of a dying process using connectors. This could be useful if the process-manager should monitor for failures only children of certain parents, so we could filter the coredump and exit events by parent process and/or thread ID. Add parent pid and tgid to coredump and exit process connectors event data. Signed-off-by:
Stefan Strogin <sstrogin@cisco.com> Acked-by:
Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by:
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Florian Fainelli authored
We do not require this inline function to be used in multiple different locations, just inline it where it gets used in register_netdevice(). Suggested-by:
Stephen Hemminger <stephen@networkplumber.org> Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Willem de Bruijn authored
Syzbot managed to send a udp gso packet without checksum offload into the gso stack by disabling tx checksum (UDP_NO_CHECK6_TX). This triggered the skb_warn_bad_offload. RIP: 0010:skb_warn_bad_offload+0x2bc/0x600 net/core/dev.c:2658 skb_gso_segment include/linux/netdevice.h:4038 [inline] validate_xmit_skb+0x54d/0xd90 net/core/dev.c:3120 __dev_queue_xmit+0xbf8/0x34c0 net/core/dev.c:3577 dev_queue_xmit+0x17/0x20 net/core/dev.c:3618 UDP_NO_CHECK6_TX sets skb->ip_summed to CHECKSUM_NONE just after the udp gso integrity checks in udp_(v6_)send_skb. Extend those checks to catch and fail in this case. After the integrity checks jump directly to the CHECKSUM_PARTIAL case to avoid reading the no_check_tx flags again (a TOCTTOU race). Fixes: bec1f6f6 ("udp: generate gso with UDP_SEGMENT") Signed-off-by:
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Paul Blakey authored
Currently flower doesn't support inserting filters with different masks on a single priority, even if the actual flows (key + mask) inserted aren't overlapping, as with the use case of offloading openvswitch datapath flows. Instead one must go up one level, and assign different priorities for each mask, which will create a different flower instances. This patch opens flower to support more than one mask per priority, and a single flower instance. It does so by adding another hash table on top of the existing one which will store the different masks, and the filters that share it. The user is left with the responsibility of ensuring non overlapping flows, otherwise precedence is not guaranteed. Signed-off-by:
Paul Blakey <paulb@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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David S. Miller authored
Marcelo Ricardo Leitner says: ==================== sctp: unify sctp_make_op_error_fixed and sctp_make_op_error_space These two variants are very close to each other and can be merged to avoid code duplication. That's what this patchset does. First, we allow sctp_init_cause to return errors, which then allow us to add sctp_make_op_error_limited that handles both situations. ==================== Signed-off-by: -
Marcelo Ricardo Leitner authored
The idea is quite similar to the old functions, but note that the _fixed function wasn't "fixed" as in that it would generate a packet with a fixed size, but rather limited/bounded to PMTU. Also, now with sctp_mtu_payload(), we have a more accurate limit. Signed-off-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Marcelo Ricardo Leitner authored
And do so if the skb doesn't have enough space for the payload. This is a preparation for the next patch. Signed-off-by:
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David S. Miller authored
Yixun Lan says: ==================== net: stmmac: dwmac-meson: 100M phy mode support for AXG SoC Due to the dwmac glue layer register changed, we need to introduce a new compatible name for the Meson-AXG SoC to support for the RMII 100M ethernet PHY. Change since v1 at [1]: - implement set_phy_mode() for each SoC [1] https://lkml.kernel.org/r/20180426160508.29380-1-yixun.lan@amlogic.com ==================== Signed-off-by:
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Yixun Lan authored
In the Meson-AXG SoC, the phy mode setting of PRG_ETH0 in the glue layer is extended from bit[0] to bit[2:0]. There is no problem if we configure it to the RGMII 1000M PHY mode, since the register setting is coincidentally compatible with previous one, but for the RMII 100M PHY mode, the configuration need to be changed to value - b100. This patch was verified with a RTL8201F 100M ethernet PHY. Signed-off-by:
Yixun Lan <yixun.lan@amlogic.com> Acked-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by:
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Yixun Lan authored
We need to introduce a new compatible name for the Meson-AXG SoC in order to support the RMII 100M ethernet PHY, since the PRG_ETH0 register of the dwmac glue layer is changed from previous old SoC. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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David S. Miller authored
Christian Brauner says: ==================== netns: uevent filtering This is the new approach to uevent filtering as discussed (see the threads in [1], [2], and [3]). It only contains *non-functional changes*. This series deals with with fixing up uevent filtering logic: - uevent filtering logic is simplified - locking time on uevent_sock_list is minimized - tagged and untagged kobjects are handled in separate codepaths - permissions for userspace are fixed for network device uevents in network namespaces owned by non-initial user namespaces Udev is now able to see those events correctly which it wasn't before. For example, moving a physical device into a network namespace not owned by the initial user namespaces before gave: root@xen1:~# udevadm --debug monitor -k calling: monitor monitor will print the received events for: KERNEL - the kernel uevent sender uid=65534, message ignored sender uid=65534, message ignored sender uid=65534, message ignored sender uid=65534, message ignored sender uid=65534, message ignored and now after the discussion and solution in [3] correctly gives: root@xen1:~# udevadm --debug monitor -k calling: monitor monitor will print the received events for: KERNEL - the kernel uevent KERNEL[625.301042] add /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/enp1s0f1 (net) KERNEL[625.301109] move /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/enp1s0f1 (net) KERNEL[625.301138] move /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/eth1 (net) KERNEL[655.333272] remove /devices/pci0000:00/0000:00:02.0/0000:01:00.1/net/eth1 (net) Thanks! Christian [1]: https://lkml.org/lkml/2018/4/4/739 [2]: https://lkml.org/lkml/2018/4/26/767 [3]: https://lkml.org/lkml/2018/4/26/738 ==================== Acked-by:
"Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Christian Brauner authored
commit 07e98962 ("kobject: Send hotplug events in all network namespaces") enabled sending hotplug events into all network namespaces back in 2010. Over time the set of uevents that get sent into all network namespaces has shrunk. We have now reached the point where hotplug events for all devices that carry a namespace tag are filtered according to that namespace. Specifically, they are filtered whenever the namespace tag of the kobject does not match the namespace tag of the netlink socket. Currently, only network devices carry namespace tags (i.e. network namespace tags). Hence, uevents for network devices only show up in the network namespace such devices are created in or moved to. However, any uevent for a kobject that does not have a namespace tag associated with it will not be filtered and we will broadcast it into all network namespaces. This behavior stopped making sense when user namespaces were introduced. This patch simplifies and fixes couple of things: - Split codepath for sending uevents by kobject namespace tags: 1. Untagged kobjects - uevent_net_broadcast_untagged(): Untagged kobjects will be broadcast into all uevent sockets recorded in uevent_sock_list, i.e. into all network namespacs owned by the intial user namespace. 2. Tagged kobjects - uevent_net_broadcast_tagged(): Tagged kobjects will only be broadcast into the network namespace they were tagged with. Handling of tagged kobjects in 2. does not cause any semantic changes. This is just splitting out the filtering logic that was handled by kobj_bcast_filter() before. Handling of untagged kobjects in 1. will cause a semantic change. The reasons why this is needed and ok have been discussed in [1]. Here is a short summary: - Userspace ignores uevents from network namespaces that are not owned by the intial user namespace: Uevents are filtered by userspace in a user namespace because the received uid != 0. Instead the uid associated with the event will be 65534 == "nobody" because the global root uid is not mapped. This means we can safely and without introducing regressions modify the kernel to not send uevents into all network namespaces whose owning user namespace is not the initial user namespace because we know that userspace will ignore the message because of the uid anyway. I have a) verified that is is true for every udev implementation out there b) that this behavior has been present in all udev implementations from the very beginning. - Thundering herd: Broadcasting uevents into all network namespaces introduces significant overhead. All processes that listen to uevents running in non-initial user namespaces will end up responding to uevents that will be meaningless to them. Mainly, because non-initial user namespaces cannot easily manage devices unless they have a privileged host-process helping them out. This means that there will be a thundering herd of activity when there shouldn't be any. - Removing needless overhead/Increasing performance: Currently, the uevent socket for each network namespace is added to the global variable uevent_sock_list. The list itself needs to be protected by a mutex. So everytime a uevent is generated the mutex is taken on the list. The mutex is held *from the creation of the uevent (memory allocation, string creation etc. until all uevent sockets have been handled*. This is aggravated by the fact that for each uevent socket that has listeners the mc_list must be walked as well which means we're talking O(n^2) here. Given that a standard Linux workload usually has quite a lot of network namespaces and - in the face of containers - a lot of user namespaces this quickly becomes a performance problem (see "Thundering herd" above). By just recording uevent sockets of network namespaces that are owned by the initial user namespace we significantly increase performance in this codepath. - Injecting uevents: There's a valid argument that containers might be interested in receiving device events especially if they are delegated to them by a privileged userspace process. One prime example are SR-IOV enabled devices that are explicitly designed to be handed of to other users such as VMs or containers. This use-case can now be correctly handled since commit 692ec06d ("netns: send uevent messages"). This commit introduced the ability to send uevents from userspace. As such we can let a sufficiently privileged (CAP_SYS_ADMIN in the owning user namespace of the network namespace of the netlink socket) userspace process make a decision what uevents should be sent. This removes the need to blindly broadcast uevents into all user namespaces and provides a performant and safe solution to this problem. - Filtering logic: This patch filters by *owning user namespace of the network namespace a given task resides in* and not by user namespace of the task per se. This means if the user namespace of a given task is unshared but the network namespace is kept and is owned by the initial user namespace a listener that is opening the uevent socket in that network namespace can still listen to uevents. - Fix permission for tagged kobjects: Network devices that are created or moved into a network namespace that is owned by a non-initial user namespace currently are send with INVALID_{G,U}ID in their credentials. This means that all current udev implementations in userspace will ignore the uevent they receive for them. This has lead to weird bugs whereby new devices showing up in such network namespaces were not recognized and did not get IPs assigned etc. This patch adjusts the permission to the appropriate {g,u}id in the respective user namespace. This way udevd is able to correctly handle such devices. - Simplify filtering logic: do_one_broadcast() already ensures that only listeners in mc_list receive uevents that have the same network namespace as the uevent socket itself. So the filtering logic in kobj_bcast_filter is not needed (see [3]). This patch therefore removes kobj_bcast_filter() and replaces netlink_broadcast_filtered() with the simpler netlink_broadcast() everywhere. [1]: https://lkml.org/lkml/2018/4/4/739 [2]: https://lkml.org/lkml/2018/4/26/767 [3]: https://lkml.org/lkml/2018/4/26/738Signed-off-by:
Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by:
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Christian Brauner authored
This patch adds alloc_uevent_skb() in preparation for follow up patches. Signed-off-by:
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