- 23 Sep, 2016 32 commits
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David S. Miller authored
Stephen Hemminger says: ==================== hv_netvsc changes These are mostly about improving the handling of interaction between the virtual network device (netvsc) and the SR-IOV VF network device. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Stephen Hemminger authored
Useful for debugging issues with multicast and SR-IOV to keep track of number of received multicast packets. Signed-off-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
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Stephen Hemminger authored
Since VF reference is now protected by RCU, no longer need the VF usage counter and can use device flags to see whether to inject or not. Signed-off-by:
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Stephen Hemminger authored
The vf_netdev pointer in the netvsc device context can simply be protected by RCU because network device destruction is already RCU synchronized. Signed-off-by:
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Stephen Hemminger authored
The code to associate netvsc and VF devices can be made less error prone by using a better matching algorithms. On registration, use the permanent address which avoids any possible issues caused by device MAC address being changed. For all other callbacks, search by the netdevice pointer value to ensure getting the correct network device. Signed-off-by:
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Stephen Hemminger authored
The callback handler for netlink events can be simplified: * Consolidate check for netlink callback events about this driver itself. * Ignore non-Ethernet devices. Signed-off-by:
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Stephen Hemminger authored
The netvsc driver holds a pointer to the virtual function network device if managing SR-IOV association. In order to ensure that the VF network device does not disappear, it should be using dev_hold/dev_put to get a reference count. Signed-off-by:
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Stephen Hemminger authored
Packets that are transmitted in normal path should use consume_skb instead of kfree_skb. This allows for better tracing of packet drops. Signed-off-by:
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David S. Miller authored
Vivien Didelot says: ==================== net: dsa: add port fast ageing Today the DSA drivers are in charge of flushing the MAC addresses associated to a port when its STP state changes from Learning or Forwarding, to Disabled or Blocking or Listening. This makes the drivers more complex and hides this generic switch logic. This patchset introduces a new optional port_fast_age operation to dsa_switch_ops, to move this logic to the DSA layer and keep drivers simple. b53 and mv88e6xxx are updated accordingly. ==================== Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Vivien Didelot authored
Now that the DSA layer handles port fast ageing on correct STP change, simplify _mv88e6xxx_port_state and implement mv88e6xxx_port_fast_age. Signed-off-by:
Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by:
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Vivien Didelot authored
Remove the fast ageing logic from b53_br_set_stp_state and implement the new DSA switch port_fast_age operation instead. Signed-off-by:
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Vivien Didelot authored
Today the DSA drivers are in charge of flushing the MAC addresses associated to a port when its STP state changes from Learning or Forwarding, to Disabled or Blocking or Listening. This makes the drivers more complex and hides the generic switch logic. Introduce a new optional port_fast_age operation to dsa_switch_ops, to move this logic to the DSA layer and keep drivers simple. Signed-off-by:
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Vivien Didelot authored
Add a void helper to set the STP state of a port, checking first if the required routine is provided by the driver. Signed-off-by:
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Iyappan Subramanian authored
Current driver programs static value of MSS in hardware register for TSO offload engine to segment the TCP payload regardless the MSS value provided by network stack. This patch fixes this by programming hardware registers with the stack provided MSS value. Since the hardware has the limitation of having only 4 MSS registers, this patch uses reference count of mss values being used. Signed-off-by:
Iyappan Subramanian <isubramanian@apm.com> Signed-off-by:
Toan Le <toanle@apm.com> Signed-off-by:
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Colin Ian King authored
Change predecrement compare to post decrement compare to avoid an unsigned integer wrap-around comparison when decrementing idx in the while loop. For example, when idx is zero, the current situation will predecrement idx in the while loop, wrapping idx to the maximum signed integer and cause out of bounds reads on rxq_info->msix_tbl[idx]. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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David S. Miller authored
Saeed Mahameed says: ==================== Mellanox 100G SRIOV offloads vlan push/pop From Or Gerlitz: This series further enhances the SRIOV TC offloads of mlx5 to handle the TC vlan push and pop actions. This serves a common use-case in virtualization systems where the virtual switch add (push) vlan tags to packets sent from VMs and removes (pop) vlan tags before the packet is received by the VM. We use the new E-Switch switchdev mode and the TC vlan action to achieve that also in SW defined SRIOV environments by offloading TC rules that contain this action along with forwarding (TC mirred/redirect action) the packet. In the first patch we add some helpers to access the TC vlan action info by offloading drivers. The next five patches don't add any new functionality, they do some refactoring and cleanups in the current code to be used next. The seventh patch deals with supporting vlans by the mlx5 e-switch in switchdev mode. The eighth patch does the vlan action offload from TC and the last patch adds matching for vlans as typically required by TC flows that involve vlan pop action. The series was applied on top of commit 524605e5 "cxgb4: Convert to use simple_open()" ==================== Signed-off-by:
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Or Gerlitz authored
Enhance the parsing of offloaded TC rules matches to handle vlans. Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
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Or Gerlitz authored
Parse TC vlan actions and set the required elements to allow offloading. Signed-off-by:
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Or Gerlitz authored
Many virtualization systems use a policy under which a vlan tag is pushed to packets sent by guests, and popped before the packet is forwarded to the VM. The current generation of the mlx5 HW doesn't fully support that on a per flow level. As such, we are addressing the above common use case with the SRIOV e-Switch abilities to push vlan into packets sent by VFs and pop vlan from packets forwarded to VFs. The HW can match on the correct vlan being present in packets forwarded to VFs (eSwitch steering is done before stripping the tag), so this part is offloaded as is. A common practice for vlans is to avoid both push vlan and pop vlan for inter-host VM/VM (east-west) communication because in this case, push on egress cancels out with pop on ingress. For supporting that, we use a global eswitch vlan pop policy, hence allowing guest A to communicate with both remote VM B and local VM C. This works since the HW pops the vlan only if it exists (e.g for C --> A packets but not for B --> A packets). On the slow path, when a VF vport has an offloaded flow which involves pushing vlans, wheres another flow is not currently offloaded, the packets from the 2nd flow seen by the VF representor on the host have vlan. The VF rep driver removes such vlan before calling into the host networking stack. Signed-off-by:
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Or Gerlitz authored
Factor the relevant code into a static inline helper (skb_from_cqe) doing that. Move the call to napi_gro_receive to be carried out just after mlx5e_complete_rx_cqe returns. Both changes are to be used for the VF representor as well in the next commit. This patch doesn't change any functionality. Signed-off-by:
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Or Gerlitz authored
Put the representors related to the source and dest vports and the action in struct mlx5_esw_flow_attr which is used while setting the FDB rule. This patch doesn't change any functionality. Signed-off-by:
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Or Gerlitz authored
The HW can be programmed to push vlan, pop vlan or both. A factorization step towards using the push/pop capabilties in the eswitch offloads mode. This patch doesn't add new functionality. Signed-off-by:
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Or Gerlitz authored
The structure we use for the eswitch vport representor (mlx5_eswitch_rep) has some fields which are set from upper layers in the driver when they register the rep. Use explicit setting on registration time for them and avoid global memcpy. This patch doesn't add new functionality. Signed-off-by:
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Or Gerlitz authored
Set the vport value in the PF entry to be that of the uplink so we can use it blindly over the tc / eswitch offload code without translating it each time we deal with the uplink representor. Signed-off-by:
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Or Gerlitz authored
Needed e.g for offloading drivers to pick the relevant attributes. Signed-off-by:
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Eric Dumazet authored
It looks like the following patch can make FQ very precise, even in VM or stressed hosts. It matters at high pacing rates. We take into account the difference between the time that was programmed when last packet was sent, and current time (a drift of tens of usecs is often observed) Add an EWMA of the unthrottle latency to help diagnostics. This latency is the difference between current time and oldest packet in delayed RB-tree. This accounts for the high resolution timer latency, but can be different under stress, as fq_check_throttled() can be opportunistically be called from a dequeue() called after an enqueue() for a different flow. Tested: // Start a 10Gbit flow $ netperf --google-pacing-rate 1250000000 -H lpaa24 -l 10000 -- -K bbr & Before patch : $ sar -n DEV 10 5 | grep eth0 | grep Average Average: eth0 17106.04 756876.84 1102.75 1119049.02 0.00 0.00 0.52 After patch : $ sar -n DEV 10 5 | grep eth0 | grep Average Average: eth0 17867.00 800245.90 1151.77 1183172.12 0.00 0.00 0.52 A new iproute2 tc can output the 'unthrottle latency' : $ tc -s qd sh dev eth0 | grep latency 0 gc, 0 highprio, 32490767 throttled, 2382 ns latency Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Bert Kenward authored
Add a NULL check before calling asynchronous MCDI completion functions during device removal. Fixes: 7014d7f6 ("sfc: allow asynchronous MCDI without completion function") Signed-off-by:
Bert Kenward <bkenward@solarflare.com> Signed-off-by:
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David S. Miller authored
Marcelo Ricardo Leitner says: ==================== sctp: fix the handling of SACK Gap Ack blocks sctp_acked() is using 32bit arithmetics on 16bits vars, via TSN_lte() macros, which is weird and confusing. Once the offset to ctsn is calculated, all wrapping is already handled and thus to verify the Gap Ack blocks we can just use pure less/big-or-equal than checks. Also, rename gap variable to tsn_offset, so it's more meaningful, as it doesn't point to any gap at all. Even so, I don't think this discrepancy resulted in any practical bug. This patch is a preparation for the next one, which will introduce typecheck() for TSN_lte() macros and would cause a compile error here. Suggested-by:
David Laight <David.Laight@ACULAB.COM> Reported-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> ==================== Signed-off-by:
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Marcelo Ricardo Leitner authored
Make it similar to time_before() macros: - easier to understand - make use of typecheck() to avoid working on unexpected variable types (made the issue on previous patch visible) - for _[lg]te versions, slighly faster, as the compiler used to generate a sequence of cmp/je/cmp/js instructions and now it's sub/test/jle (for _lte): Before, for sctp_outq_sack: if (primary->cacc.changeover_active) { 1f01: 80 b9 84 02 00 00 00 cmpb $0x0,0x284(%rcx) 1f08: 74 6e je 1f78 <sctp_outq_sack+0xe8> u8 clear_cycling = 0; if (TSN_lte(primary->cacc.next_tsn_at_change, sack_ctsn)) { 1f0a: 8b 81 80 02 00 00 mov 0x280(%rcx),%eax return ((s) - (t)) & TSN_SIGN_BIT; } static inline int TSN_lte(__u32 s, __u32 t) { return ((s) == (t)) || (((s) - (t)) & TSN_SIGN_BIT); 1f10: 8b 7d bc mov -0x44(%rbp),%edi 1f13: 39 c7 cmp %eax,%edi 1f15: 74 25 je 1f3c <sctp_outq_sack+0xac> 1f17: 39 f8 cmp %edi,%eax 1f19: 78 21 js 1f3c <sctp_outq_sack+0xac> primary->cacc.changeover_active = 0; After: if (primary->cacc.changeover_active) { 1ee7: 80 b9 84 02 00 00 00 cmpb $0x0,0x284(%rcx) 1eee: 74 73 je 1f63 <sctp_outq_sack+0xf3> u8 clear_cycling = 0; if (TSN_lte(primary->cacc.next_tsn_at_change, sack_ctsn)) { 1ef0: 8b 81 80 02 00 00 mov 0x280(%rcx),%eax 1ef6: 2b 45 b4 sub -0x4c(%rbp),%eax 1ef9: 85 c0 test %eax,%eax 1efb: 7e 26 jle 1f23 <sctp_outq_sack+0xb3> primary->cacc.changeover_active = 0; *_lt() generated pretty much the same code. Tested with gcc (GCC) 6.1.1 20160621. This patch also removes SSN_lte as it is not used and cleanups some comments. Signed-off-by: -
Marcelo Ricardo Leitner authored
sctp_acked() is using 32bit arithmetics on 16bits vars, via TSN_lte() macros, which is weird and confusing. Once the offset to ctsn is calculated, all wrapping is already handled and thus to verify the Gap Ack blocks we can just use pure less/big-or-equal than checks. Also, rename gap variable to tsn_offset, so it's more meaningful, as it doesn't point to any gap at all. Even so, I don't think this discrepancy resulted in any practical bug. This patch is a preparation for the next one, which will introduce typecheck() for TSN_lte() macros and would cause a compile error here. Suggested-by:
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WANG Cong authored
On error path in route4_change(), 'f' could be NULL, so we should check NULL before calling tcf_exts_destroy(). Fixes: b9a24bb7 ("net_sched: properly handle failure case of tcf_exts_init()") Reported-by:
kbuild test robot <fengguang.wu@intel.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Acked-by:
Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
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- 22 Sep, 2016 8 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media fixes from Mauro Carvalho Chehab: - several fixes for new drivers added for Kernel 4.8 addition (cec core, pulse8 cec driver and Mediatek vcodec) - a regression fix for cx23885 and saa7134 drivers - an important fix for rcar-fcp, making rcar_fcp_enable() return 0 on success * tag 'media/v4.8-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (25 commits) [media] cx23885/saa7134: assign q->dev to the PCI device [media] rcar-fcp: Make sure rcar_fcp_enable() returns 0 on success [media] cec: fix ioctl return code when not registered [media] cec: don't Feature Abort broadcast msgs when unregistered [media] vcodec:mediatek: Refine VP8 encoder driver [media] vcodec:mediatek: Refine H264 encoder driver [media] vcodec:mediatek: change H264 profile default to profile high [media] vcodec:mediatek: Add timestamp and timecode copy for V4L2 Encoder [media] vcodec:mediatek: Fix visible_height larger than coded_height issue in s_fmt_out [media] vcodec:mediatek: Fix fops_vcodec_release flow for V4L2 Encoder [media] vcodec:mediatek:code refine for v4l2 Encoder driver [media] cec-funcs.h: add missing vendor-specific messages [media] cec-edid: check for IEEE identifier [media] pulse8-cec: fix error handling [media] pulse8-cec: set correct Signal Free Time [media] mtk-vcodec: add HAS_DMA dependency [media] cec: ignore messages when log_addr_mask == 0 [media] cec: add item to TODO [media] cec: set unclaimed addresses to CEC_LOG_ADDR_INVALID [media] cec: add CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK flag ...
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: "Mostly small bits scattered all over the place, which is usually how things go this late in the -rc series. 1) Proper driver init device resets in bnx2, from Baoquan He. 2) Fix accounting overflow in __tcp_retransmit_skb(), sk_forward_alloc, and ip_idents_reserve, from Eric Dumazet. 3) Fix crash in bna driver ethtool stats handling, from Ivan Vecera. 4) Missing check of skb_linearize() return value in mac80211, from Johannes Berg. 5) Endianness fix in nf_table_trace dumps, from Liping Zhang. 6) SSN comparison fix in SCTP, from Marcelo Ricardo Leitner. 7) Update DSA and b44 MAINTAINERS entries. 8) Make input path of vti6 driver work again, from Nicolas Dichtel. 9) Off-by-one in mlx4, from Sebastian Ott. 10) Fix fallback route lookup handling in ipv6, from Vincent Bernat. 11) Fix stack corruption on probe in qed driver, from Yuval Mintz. 12) PHY init fixes in r8152 from Hayes Wang. 13) Missing SKB free in irda_accept error path, from Phil Turnbull" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits) tcp: properly account Fast Open SYN-ACK retrans tcp: fix under-accounting retransmit SNMP counters MAINTAINERS: Update b44 maintainer. net: get rid of an signed integer overflow in ip_idents_reserve() net/mlx4_core: Fix to clean devlink resources net: can: ifi: Configure transmitter delay vti6: fix input path ipmr, ip6mr: return lastuse relative to now r8152: disable ALDPS and EEE before setting PHY r8152: remove r8153_enable_eee r8152: move PHY settings to hw_phy_cfg r8152: move enabling PHY r8152: move some functions cxgb4/cxgb4vf: Allocate more queues for 25G and 100G adapter qed: Fix stack corruption on probe MAINTAINERS: Add an entry for the core network DSA code net: ipv6: fallback to full lookup if table lookup is unsuitable net/mlx5: E-Switch, Handle mode change failures net/mlx5: E-Switch, Fix error flow in the SRIOV e-switch init code net/mlx5: Fix flow counter bulk command out mailbox allocation ... -
Juergen Gross authored
Instead of open coding it use the threaded irq mechanism in xen-netback. Signed-off-by:
Juergen Gross <jgross@suse.com> Acked-by:
Wei Liu <wei.liu2@citrix.com> Signed-off-by:
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Sean Wang authored
Potential dangerous invalid pointer might be accessed if the error happens when couple phy_device to net_device so cleanup the error path. Signed-off-by:
Sean Wang <sean.wang@mediatek.com> Signed-off-by:
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Sean Wang authored
1) use new api [get|set]_link_ksettings instead of [get|set]_settings old ones. 2) dev->phydev is sure being ready before calling these callbacks, so removing all the sanity check if it is existing. Signed-off-by:
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Sean Wang authored
remove the unused variable for parsing PHY address and the related logic for sanity test which would be all already handled done when of_mdiobus_register was called Reported-by:
Nelson Chang <nelson.chang@mediatek.com> Signed-off-by:
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Sean Wang authored
reuse phydev already in struct net_device instead of creating another new one in private structure. Signed-off-by:
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David S. Miller authored
Sean Wang says: ==================== mediatek: add support for RGMII on GMAC0 through TRGMII hardware module By default, GMAC0 is connected to built-in switch called MT7530 through the proprietary interface called Turbo RGMII (TRGMII). TRGMII also supports well for RGMII as generic external PHY uses but requires some slight changes to the setup of TRGMII and doesn't have well support on current driver. So this patchset 1) provides the slight changes of the setup for RGMII can work through TRGMII 2) adds additional setting "trgmii" as PHY_INTERFACE_MODE_TRGMII about phy-mode on device tree to make GMAC0 distinguish which mode it runs 3) changes dynamically source clock, TX/RX delay and interface mode on TRGMII for adapting various link Changes since v1: - fixed the style of comment which doesn't have a space at the beginning and end of comment lines - add support for phy-mode "trgmii" as PHY_INTERFACE_MODE_TRGMII into linux/phy.h - enhance the Documentation about device tree binding for trgmii which is applicable only for GMAC0 which uses fixed-link ==================== Signed-off-by:
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