- 20 Jun, 2017 40 commits
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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:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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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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Niklas Cassel authored
There is nothing in the IP that prevents us from enabling TSO for IPv6. Before patch: ftp fe80::2aa:bbff:fecc:1336%eth0 ftp> get /dev/zero 882512708 bytes received in 00:14 (56.11 MiB/s) After patch: ftp fe80::2aa:bbff:fecc:1336%eth0 ftp> get /dev/zero 1203326784 bytes received in 00:12 (94.52 MiB/s) Signed-off-by:
Niklas Cassel <niklas.cassel@axis.com> Signed-off-by:
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John Allen authored
If the ibmvnic driver is not in the VNIC_OPEN state, return from ibmvnic_resume callback. If we are not in the VNIC_OPEN state, interrupts may not be initialized and directly calling the interrupt handler will cause a crash. Signed-off-by:
John Allen <jallen@linux.vnet.ibm.com> Reviewed-by:
Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by:
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Thomas Bogendoerfer authored
Provide link partner advertising information. Removed testing for gigabit modes, which is useless for a fast ethernet phy. Signed-off-by:
Thomas Bogendoerfer <tbogendoerfer@suse.de> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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David S. Miller authored
John Crispin says: ==================== net-next: mediatek: various performance improvements During development we mainly ran testing using iperf doing 1500 byte tcp frames. It was pointed out recently, that the driver does not perform very well when using 512 byte udp frames. The biggest problem was that RPS was not working as no rx queue was being set. fixing this more than doubled the throughput. Additionally the IRQ mask register is now locked independently for RX and TX. RX IRQ aggregation is also added. With all these patches applied we can almost triple the throughput. While at it we also add PHY status change reporting for GMACs connecting directly to a PHY. ==================== Signed-off-by: -
John Crispin authored
The get_rps_cpu() function will not do any RPS on the data flow when no queue is setup and always use the current cpu where the IRQ was handled to also handle the backlog. As we only have one physical queue we always set this to 0 unconditionally. Signed-off-by:
John Crispin <john@phrozen.org> Signed-off-by:
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John Crispin authored
Originally the driver only utilised the new QDMA engine. The current code still assumes this is the case when locking the IRQ mask register. Since RX now runs on the old style PDMA engine we can add a second lock. This patch reduces the IRQ latency as the TX and RX path no longer need to wait on each other under heavy load. Signed-off-by:
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John Crispin authored
The PDMA engine used for RX allows IRQ aggregation. The patch sets up the corresponding registers to aggregate 4 IRQs into one. Using aggregation reduces the load on the core handling to a quarter thus reducing IRQ latency and increasing RX performance by around 10%. Signed-off-by:
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John Crispin authored
Currently PHY status changes are only printed for DSA ports. This patch adds code to also print status changes for non-fixed links. Signed-off-by:
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David S. Miller authored
Matthias Schiffer says: ==================== vxlan: cleanup and IPv6 link-local support Running VXLANs over IPv6 link-local addresses allows to use them as a drop-in replacement for VLANs, avoiding to allocate additional outer IP addresses to run the VXLAN over. Since v1, I have added a lot more consistency checks to the address configuration, making sure address families and scopes match. To simplify the implementation, I also did some general refactoring of the configuration handling in the new first patch of the series. The second patch is more cleanup; is slightly touches OVS code, so that list is in CC this time, too. As in v1, the last two patches actually make VXLAN over IPv6 link-local work, and allow multiple VXLANs with the same VNI and port, as long as link-local addresses on different interfaces are used. As suggested, I now store in the flags field if the VXLAN uses link-local addresses or not. v3 removes log messages as suggested by Roopa Prabhu (as it is very unusual for errors in netlink requests to be printed to the kernel log.) The commit message of patch 5 has been extended to add a note about IPv4. ==================== Signed-off-by: -
Matthias Schiffer authored
As link-local addresses are only valid for a single interface, we can allow to use the same VNI for multiple independent VXLANs, as long as the used interfaces are distinct. This way, VXLANs can always be used as a drop-in replacement for VLANs with greater ID space. This also extends VNI lookup to respect the ifindex when link-local IPv6 addresses are used, so using the same VNI on multiple interfaces can actually work. Signed-off-by:
Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by:
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Matthias Schiffer authored
If VXLAN is run over link-local IPv6 addresses, it is necessary to store the ifindex in the FDB entries. Otherwise, the used interface is undefined and unicast communication will most likely fail. Support for link-local IPv4 addresses should be possible as well, but as the semantics aren't as well defined as for IPv6, and there doesn't seem to be much interest in having the support, it's not implemented for now. Signed-off-by:
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Matthias Schiffer authored
* Multicast addresses are never valid as local address * Link-local IPv6 unicast addresses may only be used as remote when the local address is link-local as well * Don't allow link-local IPv6 local/remote addresses without interface We also store in the flags field if link-local addresses are used for the follow-up patches that actually make VXLAN over link-local IPv6 work. Signed-off-by:
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Matthias Schiffer authored
Address families of source and destination addresses must match, and changelink operations can't change the address family. In addition, always use the VXLAN_F_IPV6 to check if a VXLAN device uses IPv4 or IPv6. Signed-off-by:
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Matthias Schiffer authored
There is no good reason to keep the flags twice in vxlan_dev and vxlan_config. Signed-off-by:
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Matthias Schiffer authored
The vxlan_dev_configure function was mixing validation and application of the vxlan configuration; this could easily lead to bugs with the changelink operation, as it was hard to see if the function wcould return an error after parts of the configuration had already been applied. This commit splits validation and application out of vxlan_dev_configure as separate functions to make it clearer where error returns are allowed and where the vxlan_dev or net_device may be configured. Log messages in these functions are removed, as it is generally unexpected to find error output for netlink requests in the kernel log. Userspace should be able to handle errors based on the error codes returned via netlink just fine. In addition, some validation and initialization is moved to vxlan_validate and vxlan_setup respectively to improve grouping of similar settings. Finally, this also fixes two actual bugs: * if set, conf->mtu would overwrite dev->mtu in each changelink operation, reverting other changes of dev->mtu * the "if (!conf->dst_port)" branch would never be run, as conf->dst_port was set in vxlan_setup before. This caused VXLAN-GPE to use the same default port as other VXLAN sockets instead of the intended IANA-assigned 4790. Signed-off-by:
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David S. Miller authored
yuan linyu says: ==================== net: more skb_put_[data:zero] related work yuan linyu (3): net: introduce __skb_put_[zero, data, u8] net: replace more place to skb_put_[data:zero] net: manual clean code which call skb_put_[data:zero] ==================== Signed-off-by: -
yuan linyu authored
Signed-off-by:
yuan linyu <Linyu.Yuan@alcatel-sbell.com.cn> Signed-off-by:
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yuan linyu authored
spatch file, @@ expression skb, len, data; type t; @@ -memcpy((t *)skb_put(skb, len), data, len); +skb_put_data(skb, data, len); @@ identifier p; expression skb, len, data; type t; @@ -p = (t *)memset(skb_put(skb, len), data, len); +p = skb_put_zero(skb, len); @@ expression skb, len, data; type t; @@ -memcpy((t *)__skb_put(skb, len), data, len); +__skb_put_data(skb, data, len); @@ identifier p; expression skb, len, data; type t; @@ -p = (t *)memset(__skb_put(skb, len), data, len); +p = __skb_put_zero(skb, len); Signed-off-by:
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yuan linyu authored
follow Johannes Berg, semantic patch file as below, @@ identifier p, p2; expression len; expression skb; type t, t2; @@ ( -p = __skb_put(skb, len); +p = __skb_put_zero(skb, len); | -p = (t)__skb_put(skb, len); +p = __skb_put_zero(skb, len); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, len); | -memset(p, 0, len); ) @@ identifier p; expression len; expression skb; type t; @@ ( -t p = __skb_put(skb, len); +t p = __skb_put_zero(skb, len); ) ... when != p ( -memset(p, 0, len); ) @@ type t, t2; identifier p, p2; expression skb; @@ t *p; ... ( -p = __skb_put(skb, sizeof(t)); +p = __skb_put_zero(skb, sizeof(t)); | -p = (t *)__skb_put(skb, sizeof(t)); +p = __skb_put_zero(skb, sizeof(t)); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, sizeof(*p)); | -memset(p, 0, sizeof(*p)); ) @@ expression skb, len; @@ -memset(__skb_put(skb, len), 0, len); +__skb_put_zero(skb, len); @@ expression skb, len, data; @@ -memcpy(__skb_put(skb, len), data, len); +__skb_put_data(skb, data, len); @@ expression SKB, C, S; typedef u8; identifier fn = {__skb_put}; fresh identifier fn2 = fn ## "_u8"; @@ - *(u8 *)fn(SKB, S) = C; + fn2(SKB, C); Signed-off-by: -
Vivien Didelot authored
Kill the remaining shift macro in favor of calculating at compile time its value from the more descriptive mask, which gives us a better representation of the register layout. Signed-off-by:
Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by:
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David S. Miller authored
Vivien Didelot says: ==================== net: dsa: Global 2 cosmetics Similarly to what has been done for the Port and Global 1 registers, this patch series prefixes and documents the macros of Global 2. It brings no functional changes except for 1/10 which fixes the IRL init for 88E6390 family. Changes in v2: make *_g2_irl_init_all static inline without NET_DSA_MV88E6XXX_GLOBAL2 and compile test with and without the symbol. ==================== Signed-off-by: -
Vivien Didelot authored
Prefix and document the remaining Global 2 registers macros. Signed-off-by:
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Vivien Didelot authored
The Marvell 88E6352 family has a Global 2 register dedicated to the watchdog setup. But the 88E6390 turned it into an indirect table. Prefix and document that. Signed-off-by:
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Vivien Didelot authored
Prefix and document the Global 2 Switch MAC registers macros. Signed-off-by:
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Vivien Didelot authored
Prefix and document the Global 2 EEPROM registers macros. Signed-off-by:
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Vivien Didelot authored
Prefix and document the Global 2 Cross-chip Port VLAN registers macros. Signed-off-by:
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Vivien Didelot authored
Prefix and document the Global 2 MGMT registers macros. Signed-off-by:
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Vivien Didelot authored
Prefix and document the Global 2 Device Mapping macros. Signed-off-by:
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Vivien Didelot authored
Prefix and document the Global 2 Trunk registers macros. At the same time, fix the hask -> hash typo and use the mv88e6xxx_port_mask helper. Signed-off-by:
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Vivien Didelot authored
Marvell chips with an SMI PHY access in Global 2 registers handle both Clause 22 and Clause 45 of IEEE 802.3. The 88E6390 family has addition bits to target the internal or external PHYs connected to the device, and a Setup function in addition to the default (register) Access function. Prefix the SMI PHY Command and Data registers macros, implement clear helpers for Clause 22 and 44 Access functions, rename variable to match the SMI and switch vocabulary (device and register addresses for Clause 22 and port and device class for Clause 45.) Finally do not use complex macros but simple 16-bit mask to document the registers organization. Signed-off-by:
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Vivien Didelot authored
Some Marvell chips have an Ingress Rate Limit unit. But the command values slightly differs between models: 88E6352 use 3-bit for operations while 88E6390 use different 2-bit operations. This commit kills the IRL flags in favor of a new operation implementing the "Init all resources to the initial state" operation. This fixes the operation of 88E6390 family where 0x1000 means Read the selected resource 0, register 0 on port 16, instead of init all. A mv88e6xxx_irl_setup helper is added to wrap the operation call. Signed-off-by:
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David S. Miller authored
Icenowy Zheng says: ==================== net-next: stmmac: dwmac-sun8i: add support for V3s Allwinner V3s features an EMAC like the on in H3, but without external MII interfaces, so being not able really to use RMII/RGMII. And it has a different default value of syscon (0x38000 instead of 0x58000 on H3), which shows a problem that the EMAC clock freq should be 24MHz. (Both H3 and V3s SoCs doesn't have extra xtal input for EPHY, and the main xtal is 24MHz. The default value of H3 is set to 24MHz, but the V3s default value is set to 25MHz). First two patches are device tree binding patches, the third forces the frequency to 24MHz and the fourth really add the V3s support. ==================== Signed-off-by: -
Icenowy Zheng authored
Allwinner V3s SoC has an Ethernet MAC and an internal PHY like the ones in H3 SoC, however the MAC has no external *MII interfaces available at GPIOs, thus only MII connection to internal PHY is supported. Add this variant of EMAC to dwmac-sun8i driver. The default value of the syscon EMAC-related register seems to have changed from H3, but it seems to be a harmless change. Signed-off-by:
Icenowy Zheng <icenowy@aosc.io> Signed-off-by:
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Icenowy Zheng authored
The EPHY control part of the EMAC syscon register has a bit called CLK_SEL. On the datasheet it says that if it's 0 the EPHY clock is 25MHz and if it's 1 the clock is 24MHz. However, according to the datasheets, no Allwinner SoC with EPHY has any extra xtal input pins for the EPHY, and the system xtal is 24MHz. That means the EPHY is not possible to get a 25MHz xtal input, and thus the frequency can only be 24MHz. It doesn't matter on H3 as the default value of H3 is 24MHz, however on V3s the default value is wrongly set to 25MHz, which prevented the EPHY from working properly. Force the EPHY clock frequency to 24MHz. Signed-off-by:
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Icenowy Zheng authored
Allwinner V3s SoC has a syscon like the one in H3. Add its compatible string. Signed-off-by:
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Icenowy Zheng authored
Allwinner V3s SoC has a Ethernet MAC like the one in Allwinner H3, but have no external MII capability. That means that it can only use the EPHY and cannot do Gbps transmission. Add binding for it. Signed-off-by:
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David S. Miller authored
Lucas Bates says: ==================== net: Introduction of the tc tests Apologies for sending this as one big patch. I've been sitting on this a little too long, but it's ready and I wanted to get it out. There are a limited number of tests to start - I plan to add more on a regular basis. ==================== Signed-off-by: -
Lucas Bates authored
Add the beginnings of a testsuite for tc functionality in the kernel. These are a series of unit tests that use the tc executable and verify the success of those commands by checking both the exit codes and the output from tc's 'show' operation. To run the tests: # cd tools/testing/selftests/tc-testing # sudo ./tdc.py You can specify the tc executable to use with the -p argument on the command line or editing the 'TC' variable in tdc_config.py. Refer to the README for full details on how to run. The initial complement of test cases are limited mostly to tc actions. Test cases are most welcome; see the creating-testcases subdirectory for help in creating them. Signed-off-by:
Lucas Bates <lucasb@mojatatu.com> Signed-off-by:
Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
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