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* net: rmnet_data: Further optimize UL aggregation accumulationHarout Hedeshian2016-03-22
| | | | | | | | | | | Do not aggregate frames if they are sapced out more than 10ms. Since the scedule_delayed_work() API only takes time in jiffies, ping packets are getting substantially delayed. Instead, just send them. This parameter is tunable from the module parameters location. CRs-Fixed: 772705 Change-Id: I6ac337c8d61b1290f939b86081070c14c2c757b1 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Optimize UL aggregation accumulation logicHarout Hedeshian2016-03-22
| | | | | | | | | | | Accumulation logic now respects max packet count as well as buffer size. Additionally, packets will get shipped if they have been sitting around for more than 1ms. This parameter is tunable from the module parameters location. CRs-Fixed: 772705 Change-Id: I1b5cb597ef6adfe19df590582f9a6cae091c5977 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: add support to UL checksum offload for IPv6 over UDPSivan Reinstein2016-03-22
| | | | | | | | | | Set rmnet_data virtual network devices with NETIF_F_IPV6_UDP_CSUM to support uplink checksum offloading to HW for IPv6 over UDP packets. CRs-fixed: 731693 Change-Id: I6c06fb4d137d4e96a813894802e3096c26e88da4 Signed-off-by: Sivan Reinstein <sivanr@codeaurora.org>
* net: rmnet_data: add support for UL MAP based checksum offloadSivan Reinstein2016-03-22
| | | | | | | | | | | | | Add UL checksum offload routines for MAPv3. Can bypass checksum software for IPv4/IPv6 TCP/UDP protocols. Set rmnet_data VNDs hw_flags to NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM to define the checksum offload abilities. Add UL checksum meta-info header for IPv4/IPv6 TCP/UDP packets for which UL checksum is being offloaded. CRs-fixed: 731693 Change-Id: Ief139d357b528aead66acfe39a5227328b8fbf93 Signed-off-by: Sivan Reinstein <sivanr@codeaurora.org>
* net: rmnet_data: Checksum offload handle IPv4 UDP frames with 0 checksumHarout Hedeshian2016-03-22
| | | | | | | | | | | Checksum offload routine should skip checksum fixup computation on IPv4 UDP packets which have the checksum field set to 0 by the sender. This is allowed by RFC768. Packets are marked as checksum unnecessary and shipped up the stack as-is. CRs-Fixed: 755544 Change-Id: I0432c3e1b25196134ecc8bbbe23c9cab46666d5c Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Add counters for downlink checksum offload return codesHarout Hedeshian2016-03-22
| | | | | | | | Added counter array to /sys/module/rmnet_data/parameters/checksum_dl_stats for non-realtime analysis of checksum offload. Change-Id: I749c09147325fd0f871c34ff17e2546b68898faa Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Add documentation for configuration structuresHarout Hedeshian2016-03-22
| | | | | | | | Better document the configuration structures and the element usage. Anticipating more elements being added in the near term. Change-Id: I5ca90b7a776072d6b1ac4838782cada38f4fea3b Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Increase max mux IDs to 256Harout Hedeshian2016-03-22
| | | | | | | | | Support the full range of mux IDs for special channels which have large ID numbers. Expected runtime memory impact is an increase of ~1.5KB per attached physical network device. Change-Id: Ic9db497708064c31fe7ed588a855311b50d55e19 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: add support for DL MAP based checksum offloadSivan Reinstein2016-03-22
| | | | | | | | | Add DL checksum offload routines for MAPv3. Can bypass checksum software for IPv4/IPv6 TCP/UDP protocols. CRs-fixed: 692334 Change-Id: Ic13a5d9a1ebfdc57b6eb53ee93da92c3aee547b1 Signed-off-by: Sivan Reinstein <sivanr@codeaurora.org>
* net: rmnet_data: Fix potential memory corruptionSubash Abhinov Kasiviswanathan2016-03-22
| | | | | | | | | Fix an out of bounds array access during virtual net device creation CRs-fixed: 695032 Change-Id: Ie8ae1f25122f685c22d139d1abf06acf55d46782 Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: Move MAP header definition to UAPIHarout Hedeshian2016-03-22
| | | | | | | | | | | | | Expose the MAP header to the rest of the kernel and user space. Useful for making various parts of the kernel MAP aware. Keeping consistency with other networking procols by exposing protocol headers to user space with a header file in UAPI. CRs-Fixed: 681280 Change-Id: Ic7f414f926f68531418725f971ab2b44459f5ea1 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org> [subashab@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: modify the packet loggingSubash Abhinov Kasiviswanathan2016-03-22
| | | | | | | | | | | skb->tail and skb->end are defined as character pointers in 32 bit environments and as integers in other environments. Fix compilation issues seen in the packet logging functions as a result of the data type mismtach in 64 bit environments. CRs-fixed: 665364 Change-Id: Ie70e01ce0678947d9c8cd924fe99b89ce319d4e5 Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: Catch empty MAP frames during de-aggregationHarout Hedeshian2016-03-22
| | | | | | | | | | | | | RmNet Data does not explicitly catch 0-length MAP frames when de-aggregating frames. This causes the empty MAP frames to get dropped at a later point in MAP processing, causing the drop counters to get skewed with benign drops. This patch explicitly handles 0-length MAP frames and adds a dedicated drop counter. This change is required on hardware which generates 0-length MAP frames. CRs-Fixed: 673296 Change-Id: I8e7210403d35018bffa8f45ea1b4b5752f3e30be Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: adding new trace pointsHarout Hedeshian2016-03-22
| | | | | | | | | | Added new trace points for flow control events and aggregation/deaggregation. CRs-Fixed: 661459 Change-Id: I22e5b441f5bb8ff055b0577954cc9f6285b68a74 Acked-by: Sivan Reinstein <sivanr@qti.qualcomm.com> Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: add cleanup in rmnet_config_exitSubash Abhinov Kasiviswanathan2016-03-22
| | | | | | | | | | Add a call to unregister_netdevice_notifier in rmnet_config_exit, and fix some compilation warnings. CRs-Fixed: 633585 Change-Id: I0e61c5460b927c3348f4e9815bbd9f842488f14d Acked-by: Sivan Reinstein <sivanr@qti.qualcomm.com> Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: Support for NETLINK gettersHarout Hedeshian2016-03-22
| | | | | | | | | | | Added support for RMNET_NETLINK_GET_LOGICAL_EP_CONFIG and RMNET_NETLINK_GET_NETWORK_DEVICE_ASSOCIATED in the rmnet_data configuration module. CRs-fixed: 599231 Change-Id: Ib5eeb4a37f80a4df19cb3c1ef02ec477f5445740 Acked-by: David Arinzon <darinzon@qti.qualcomm.com> Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Clear VNDs upon physical device unregistrationHarout Hedeshian2016-03-22
| | | | | | | | | | Clear out VNDs which have their egress device pointing to an interface which is trying to unregister from the network stack. Required to prevent systems hangs on unexpected shutdown/reboot of the device. CRs-Fixed: 638324 Change-Id: I406270fee9feb1f9673b3391ce51c11e8e6c9d81 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: remove NOARP flags for the virtual net deviceSubash Abhinov Kasiviswanathan2016-03-22
| | | | | | | | | | | | When IFF_NOARP flag is set for a device, the kernel automatically sets the accept_dad flag to -1 even though autoconf is enabled. As a result, nodes on that link were not receiving neighbour solicitations. Removed the setting of IFF_NOARP during net device setup. CRs-Fixed: 629099 Change-Id: Ia8b5d1163196cc0518a20beba643930b4f439771 Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: modify 8-byte QoS HeaderSubash Abhinov Kasiviswanathan2016-03-22
| | | | | | | | | | | Clients consuming the 8-byte QoS header expect the flowID in a different position in the header thus causing random address dereference and a potential crash. Update the 8-byte QoS header format structure as specified in the mandated QOS specification CRs-Fixed: 625709 Change-Id: I58c662ff2f3adfe9584d19891339ea31ce0c8bd3 Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: Add support for ftrace eventsHarout Hedeshian2016-03-22
| | | | | | | | | Adding initial support for ftrace events in order to help with profiling and debugging. This initial set of events covers the ingress and egress handlers. Change-Id: I296d6fb9d009d8fdc2061e17d25e1275ee0a8a12 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: new structure for rmnet ioctlsHarout Hedeshian2016-03-22
| | | | | | | | | | | | | | This patch modifies the rmnet ioctls RMNET_IOCTL_GET_LLP, RMNET_IOCTL_GET_QOS, RMNET_IOCTL_GET_OPMODE, RMNET_IOCTL_FLOW_ENABLE and RMNET_IOCTL_FLOW_DISABLE to avoid putting integral data in pointers and avoid casting between 32 and 64 bits types. CRs-Fixed: 601207 Change-Id: I66edb785f6204f38b6f0ecccb2ceab36d5e38188 Acked-by: Sivan Reinstein <sivanr@qti.qualcomm.com> Signed-off-by: Harout Hedeshian <harouth@codeaurora.org> [subashab@codeaurora.org: remove driver specific changes] Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: Add default value for tx_queue_lenSubash Abhinov Kasiviswanathan2016-03-22
| | | | | | | | | | The default value of tx_queue_len was 0 which was causing packet drops because of queueing in tc. This patch sets a fixed value for the tx_queue_len CRs-Fixed: 609873 Change-Id: I51739e63223b563f7cf8838d88908db7dcc9bf3e Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
* net: rmnet_data: Add newline character debug packet dumpHarout Hedeshian2016-03-22
| | | | | | | | The lack of newline characters causes messy printouts over serial. This patch corrects the problem for easier readability. Change-Id: I38df34eb4a705d8c0fcd3243b7e756967bc7d5a9 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Enhanced countersHarout Hedeshian2016-03-22
| | | | | | | | | Added performance counters to various key places in RmNet Data data path. CRs-Fixed: 600629 Change-Id: Iba50c86665e181e09525e9538a540e09e526e16f Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Enhance logging macros to remove duplicated codeHarout Hedeshian2016-03-22
| | | | | | | | | | Logging macros now enforce that function names are printed, and newlines are inserted at the end. The start of log messages are now standardize. CRs-Fixed: 600629 Change-Id: I91dae00c331af80954b93eba1f7be2889c569276 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Add support for guaranteed paddingHarout Hedeshian2016-03-22
| | | | | | | | | | | Added new parameter tail_spacing to RMNET_NETLINK_SET_LINK_INGRESS_DATA_FORMAT in order to support an additional fixed padding on packets. Required to support RNDIS tethering. CRs-Fixed: 579184 Change-Id: I58bbbfbaa68a28b25a96f52b04165285de9c24ef Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Modifying the ingress handler to support MAP bridgingHarout Hedeshian2016-03-22
| | | | | | | | | | | This patch modified the main ingress handler to not drop MAP packets when in bridge mode. This is required to support bridging of MAP packets between two endpoints. CRs-Fixed: 590888 Change-Id: If0b6f6434ec95c36e0f46bbe70ea65fa50b03b15 Acked-by: David Arinzon <darinzon@qti.qualcomm.com> Signed-off-by: Harout Hadeshian <harouth@codeaurora.org>
* net: rmnet_data: Handle device unregister notificationsHarout Hedeshian2016-03-22
| | | | | | | | | | | Gracefully handle device unregister notifications. Cleans up any logical endpoints configured on a physical devices and then unassociates it. Required to prevent crash if references are held too long. CRs-Fixed: 596227 Change-Id: I02d08e07e74510b7a8dffbefa99e651e0100db23 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Enhancements to support SSRHarout Hedeshian2016-03-22
| | | | | | | | | | | Cleaned up refcount on get_dev_by_name. Added new APIs to support cleanup of configuration and virtual devices. Added explicit reference managment in association/un-association and when setting/unsetting logical EP. CRs-Fixed: 596227 Change-Id: Ic67bb649b0f0420d9a1e4bf5664ed63c0ff7d8bf Signed-off-by: Harout Hadeshian <harouth@codeaurora.org>
* net: rmnet_data: 8-byte QoS Header SupportHarout Hedeshian2016-03-22
| | | | | | | | | Implement 8-byte QoS header support in order to fix alignment issues on HSIC transport and increase throughput CRs-Fixed: 579132 Change-Id: I3e53571d36bd71705abcb1473290929f8227e6f3 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: In-band flow controlHarout Hedeshian2016-03-22
| | | | | | | | | | | Implement MAP based in-band flow control. Added 2 new configuration messages to allow adding and deleting flow handles. Added handlers in VND for flow control events. Added flow control command handler in rmnet_map_commands. CRs-fixed: 568534 Change-Id: Ica52e4ad89430c9fa5e2b38e389ee6bc91de2e9b Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Set SKB protocol for outbound MAP packetsHarout Hedeshian2016-03-22
| | | | | | | | | | Set the skb->protocol field to ETH_P_MAP for egress packets which have MAP enabled. Required for lower level drivers to ensure that only MAP packets are being transmitted. CRs-Fixed: 554883 Change-Id: I6fa852344ef36e079cc610cbed152555aae9d6f2 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Change aggregation copy mode for compatHarout Hedeshian2016-03-22
| | | | | | | | | Change SKB copy and delivery mode to fix certain error modes when running ingress deaggregation CRs-Fixed: 565123 Change-Id: If23cee6a0de6b189b2c528423df52555e1879bc3 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Add support for user defined device name prefixHarout Hedeshian2016-03-22
| | | | | | | | | | Run-time user space components can now specify virtual network device name prefix at device creation. This will be used to support legacy data services. CRs-Fixed: 555507 Change-Id: Id34c2761f2060e66b05c521304d5151620ba5665 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* net: rmnet_data: Fix compiler macro commentsHarout Hedeshian2016-03-22
| | | | | | | | | Removed incorrect compiler macro comments in MAP header file. Comments are now up fixed up to standards. CRs-Fixed: 553399 Change-Id: I6373753e644f3801b7a25184e4cff5772f365a02 Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
* RmNet Data: Initial releaseHarout Hedeshian2016-03-22
RmNet Data driver provides a transport agnostic MAP (multiplexing and aggregation protocol) support in embedded and bridge modes. Module provides virtual network devices which can be attached to any IP-mode physical device. This will be used to provide all MAP functionality on future hardware in a single consistent location. CRs-Fixed: 525675 Change-Id: I739947c9c3de008974dd485a74e9953ba2cbb75e Signed-off-by: Harout Hedeshian <harouth@codeaurora.org> [subashab@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
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