- 24 Jan, 2018 40 commits
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Wei Yongjun authored
Fixes the following sparse warning: drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c:46:27: warning: symbol 'pedits' was not declared. Should it be static? Fixes: 27ece1f3 ("cxgb4: add tc flower support for ETH-DMAC rewrite") Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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William Tu authored
When building the erspan header for either v1 or v2, the eth_hdr() does not point to the right inner packet's eth_hdr, causing kasan report use-after-free and slab-out-of-bouds read. The patch fixes the following syzkaller issues: [1] BUG: KASAN: slab-out-of-bounds in erspan_xmit+0x22d4/0x2430 net/ipv4/ip_gre.c:735 [2] BUG: KASAN: slab-out-of-bounds in erspan_build_header+0x3bf/0x3d0 net/ipv4/ip_gre.c:698 [3] BUG: KASAN: use-after-free in erspan_xmit+0x22d4/0x2430 net/ipv4/ip_gre.c:735 [4] BUG: KASAN: use-after-free in erspan_build_header+0x3bf/0x3d0 net/ipv4/ip_gre.c:698 [2] CPU: 0 PID: 3654 Comm: syzkaller377964 Not tainted 4.15.0-rc9+ #185 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_address_description+0x73/0x250 mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report+0x25b/0x340 mm/kasan/report.c:409 __asan_report_load_n_noabort+0xf/0x20 mm/kasan/report.c:440 erspan_build_header+0x3bf/0x3d0 net/ipv4/ip_gre.c:698 erspan_xmit+0x3b8/0x13b0 net/ipv4/ip_gre.c:740 __netdev_start_xmit include/linux/netdevice.h:4042 [inline] netdev_start_xmit include/linux/netdevice.h:4051 [inline] packet_direct_xmit+0x315/0x6b0 net/packet/af_packet.c:266 packet_snd net/packet/af_packet.c:2943 [inline] packet_sendmsg+0x3aed/0x60b0 net/packet/af_packet.c:2968 sock_sendmsg_nosec net/socket.c:638 [inline] sock_sendmsg+0xca/0x110 net/socket.c:648 SYSC_sendto+0x361/0x5c0 net/socket.c:1729 SyS_sendto+0x40/0x50 net/socket.c:1697 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline] do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x54/0x63 arch/x86/entry/entry_64_compat.S:129 RIP: 0023:0xf7fcfc79 RSP: 002b:00000000ffc6976c EFLAGS: 00000286 ORIG_RAX: 0000000000000171 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020011000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020008000 RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Fixes: f551c91d ("net: erspan: introduce erspan v2 for ip_gre") Fixes: 84e54fe0 ("gre: introduce native tunnel support for ERSPAN") Reported-by: syzbot+9723f2d288e49b492cf0@syzkaller.appspotmail.com Reported-by: syzbot+f0ddeb2b032a8e1d9098@syzkaller.appspotmail.com Reported-by: syzbot+f14b3703cd8d7670203f@syzkaller.appspotmail.com Reported-by: syzbot+eefa384efad8d7997f20@syzkaller.appspotmail.com Signed-off-by:
William Tu <u9012063@gmail.com> Signed-off-by:
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Wang Dongsheng authored
Bit TPD3[31] is used as a timestamp bit if PTP is enabled, but it's used as an address bit if PTP is disabled. Since PTP isn't supported by the driver, we can extend the DMA address to 46 bits. Signed-off-by:
Wang Dongsheng <dongsheng.wang@hxt-semitech.com> Acked-by:
Timur Tabi <timur@codeaurora.org> Signed-off-by:
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Thomas Winter authored
This allows marks set by connmark in iptables to be used for route lookups. Signed-off-by:
Thomas Winter <thomas.winter@alliedtelesis.co.nz> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Signed-off-by:
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Niklas Cassel authored
Doing a bitwise AND between a bool and an int is generally not a good idea. The bool will be promoted to an int with value 0 or 1, the int is generally regarded as true with a non-zero value, thus ANDing them has the potential to yield an undesired result. This commit fixes the following smatch warnings: drivers/net/ethernet/stmicro/stmmac/enh_desc.c:344 enh_desc_prepare_tx_desc() warn: maybe use && instead of & drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c:337 dwmac4_rd_prepare_tx_desc() warn: maybe use && instead of & drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c:380 dwmac4_rd_prepare_tso_tx_desc() warn: maybe use && instead of & Signed-off-by:
Niklas Cassel <niklas.cassel@axis.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: ==================== 1GbE Intel Wired LAN Driver Updates 2018-01-24 This series contains updates to igb and e1000e only. Corinna Vinschen implements the ability to set the VF MAC to 00:00:00:00:00:00 via RTM_SETLINK on the PF, to prevent receiving "invlaid argument" when libvirt attempts to restore the MAC address back to its original state of 00:00:00:00:00:00. Zhang Shengju adds a new function igb_get_max_rss_queues() to get the maxium number of RSS queues and to reduce code duplication. Matt fixes an issue with e1000e where when setting HTHREST, we should only be setting bit 8. Also added a dev_info() message to alert when C-states have been disabled, to help in debugging. Jesus adds code comments to clarify the idlescope configuration constraints. Lyude Paul fixes a kernel crash on hotplug of igb, by checking to ensure that we are in the process of dismantling the netdev on hotplug events. Markus Elfring removes a duplicate message for a memory allocation failure. Daniel Hua fixes an issue where transmit timestamps will stop being put into the socket when link is repeatedly up/down due to TSYNCTXCTL's TXTT bit (Transmit timestamp valid bit) not clearing in the timeout logic of ptp_tx_work(), which in turn causes no new timestamp to be loaded to the TXSTMP register. ==================== Signed-off-by: -
David S. Miller authored
Jakub Kicinski says: ==================== net: sched: propagate extack to cls offloads on destroy and only with skip_sw This series some of Jiri's comments and the fact that today drivers may produce extack even if there is no skip_sw flag (meaning the driver failure is not really a problem), and warning messages will only confuse the users. First patch propagates extack to destroy as requested by Jiri, extack is then propagated to the driver callback for each classifier. I chose not to provide the extack on error paths. As a rule of thumb it seems best to keep the extack of the condition which caused the error. E.g. err = this_will_fail(arg, extack); if (err) { undo_things(arg, NULL /* don't pass extack */); return err; } Note that NL_SET_ERR_MSG() will ignore the message if extack is NULL. I was pondering whether we should make NL_SET_ERR_MSG() refuse to overwrite the msg, but there seem to be cases in the tree where extack is set like this: err = this_will_fail(arg, extack); if (err) { undo_things(arg, NULL /* don't pass extack */); NL_SET_ERR_MSG(extack, "extack is set after undo call :/"); return err; } I think not passing extack to undo calls is reasonable. v2: - rename the temporary tc_cls_common_offload_init(). ==================== Signed-off-by: -
Jakub Kicinski authored
All users are now converted to tc_cls_common_offload_init(). Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by:
Simon Horman <simon.horman@netronome.com> Signed-off-by:
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Jakub Kicinski authored
Propagate extack on removal of offloaded filter. Don't pass extack from error paths. Signed-off-by:
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Jakub Kicinski authored
Pass offload flags to the new implementation of tc_cls_common_offload_init(). Extack will now only be set if user requested skip_sw. hnodes need to hold onto the flags now to be able to reuse them on filter removal. Signed-off-by:
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Jakub Kicinski authored
Propagate extack on removal of offloaded filter. Don't pass extack from error paths. Signed-off-by:
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Jakub Kicinski authored
Pass offload flags to the new implementation of tc_cls_common_offload_init(). Extack will now only be set if user requested skip_sw. Signed-off-by:
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Jakub Kicinski authored
Propagate extack on removal of offloaded filter. Don't pass extack from error paths. Signed-off-by:
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Jakub Kicinski authored
Pass offload flags to the new implementation of tc_cls_common_offload_init(). Extack will now only be set if user requested skip_sw. Signed-off-by:
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Jakub Kicinski authored
Propagate extack on removal of offloaded filter. Signed-off-by:
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Jakub Kicinski authored
Pass offload flags to the new implementation of tc_cls_common_offload_init(). Extack will now only be set if user requested skip_sw. Signed-off-by:
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Jakub Kicinski authored
cls_bpf now guarantees that only device-bound programs are allowed with skip_sw. The drivers no longer pay attention to flags on filter load, therefore the bpf_offload member can be removed. If flags are needed again they should probably be added to struct tc_cls_common_offload instead. Signed-off-by:
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Jakub Kicinski authored
Rename the tc_cls_common_offload_init() helper function to tc_cls_common_offload_init_deprecated() and add a new implementation which also takes flags argument. We will only set extack if flags indicate that offload is forced (skip_sw) otherwise driver errors should be ignored, as they don't influence the overall filter installation. Note that we need the tc_skip_hw() helper for new version, therefore it is added later in the file. Signed-off-by:
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Jakub Kicinski authored
Propagate extack to cls->destroy callbacks when called from non-error paths. On error paths pass NULL to avoid overwriting the failure message. Signed-off-by:
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Daniel Hua authored
Problem description: After ethernet cable connect and disconnect for several iterations on a device with i210, tx timestamp will stop being put into the socket. Steps to reproduce: 1. Setup a device with i210 and wire it to a 802.1AS capable switch ( Extreme Networks Summit x440 is used in our case) 2. Have the gptp daemon running on the device and make sure it is synced with the switch 3. Have the switch disable and enable the port, wait for the device gets resynced with the switch 4. Iterates step 3 until the device is not albe to get resynced 5. Review the log in dmesg and you will see warning message "igb : clearing Tx timestamp hang" Root cause: If ptp_tx_work() gets scheduled just before the port gets disabled, a LINK DOWN event will be processed before ptp_tx_work(), which may cause timeout in ptp_tx_work(). In the timeout logic, the TSYNCTXCTL's TXTT bit (Transmit timestamp valid bit) is not cleared, causing no new timestamp loaded to TXSTMP register. Consequently therefore, no new interrupt is triggerred by TSICR.TXTS bit and no more Tx timestamp send to the socket. Signed-off-by:
Daniel Hua <daniel.hua@ni.com> Tested-by:
Aaron Brown <aaron.f.brown@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Markus Elfring authored
Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. Signed-off-by:
Markus Elfring <elfring@users.sourceforge.net> Tested-by:
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Lyude Paul authored
Recently I got a Caldigit TS3 Thunderbolt 3 dock, and noticed that upon hotplugging my kernel would immediately crash due to igb: [ 680.825801] kernel BUG at drivers/pci/msi.c:352! [ 680.828388] invalid opcode: 0000 [#1] SMP [ 680.829194] Modules linked in: igb(O) thunderbolt i2c_algo_bit joydev vfat fat btusb btrtl btbcm btintel bluetooth ecdh_generic hp_wmi sparse_keymap rfkill wmi_bmof iTCO_wdt intel_rapl x86_pkg_temp_thermal coretemp crc32_pclmul snd_pcm rtsx_pci_ms mei_me snd_timer memstick snd pcspkr mei soundcore i2c_i801 tpm_tis psmouse shpchp wmi tpm_tis_core tpm video hp_wireless acpi_pad rtsx_pci_sdmmc mmc_core crc32c_intel serio_raw rtsx_pci mfd_core xhci_pci xhci_hcd i2c_hid i2c_core [last unloaded: igb] [ 680.831085] CPU: 1 PID: 78 Comm: kworker/u16:1 Tainted: G O 4.15.0-rc3Lyude-Test+ #6 [ 680.831596] Hardware name: HP HP ZBook Studio G4/826B, BIOS P71 Ver. 01.03 06/09/2017 [ 680.832168] Workqueue: kacpi_hotplug acpi_hotplug_work_fn [ 680.832687] RIP: 0010:free_msi_irqs+0x180/0x1b0 [ 680.833271] RSP: 0018:ffffc9000030fbf0 EFLAGS: 00010286 [ 680.833761] RAX: ffff8803405f9c00 RBX: ffff88033e3d2e40 RCX: 000000000000002c [ 680.834278] RDX: 0000000000000000 RSI: 00000000000000ac RDI: ffff880340be2178 [ 680.834832] RBP: 0000000000000000 R08: ffff880340be1ff0 R09: ffff8803405f9c00 [ 680.835342] R10: 0000000000000000 R11: 0000000000000040 R12: ffff88033d63a298 [ 680.835822] R13: ffff88033d63a000 R14: 0000000000000060 R15: ffff880341959000 [ 680.836332] FS: 0000000000000000(0000) GS:ffff88034f440000(0000) knlGS:0000000000000000 [ 680.836817] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 680.837360] CR2: 000055e64044afdf CR3: 0000000001c09002 CR4: 00000000003606e0 [ 680.837954] Call Trace: [ 680.838853] pci_disable_msix+0xce/0xf0 [ 680.839616] igb_reset_interrupt_capability+0x5d/0x60 [igb] [ 680.840278] igb_remove+0x9d/0x110 [igb] [ 680.840764] pci_device_remove+0x36/0xb0 [ 680.841279] device_release_driver_internal+0x157/0x220 [ 680.841739] pci_stop_bus_device+0x7d/0xa0 [ 680.842255] pci_stop_bus_device+0x2b/0xa0 [ 680.842722] pci_stop_bus_device+0x3d/0xa0 [ 680.843189] pci_stop_and_remove_bus_device+0xe/0x20 [ 680.843627] trim_stale_devices+0xf3/0x140 [ 680.844086] trim_stale_devices+0x94/0x140 [ 680.844532] trim_stale_devices+0xa6/0x140 [ 680.845031] ? get_slot_status+0x90/0xc0 [ 680.845536] acpiphp_check_bridge.part.5+0xfe/0x140 [ 680.846021] acpiphp_hotplug_notify+0x175/0x200 [ 680.846581] ? free_bridge+0x100/0x100 [ 680.847113] acpi_device_hotplug+0x8a/0x490 [ 680.847535] acpi_hotplug_work_fn+0x1a/0x30 [ 680.848076] process_one_work+0x182/0x3a0 [ 680.848543] worker_thread+0x2e/0x380 [ 680.848963] ? process_one_work+0x3a0/0x3a0 [ 680.849373] kthread+0x111/0x130 [ 680.849776] ? kthread_create_worker_on_cpu+0x50/0x50 [ 680.850188] ret_from_fork+0x1f/0x30 [ 680.850601] Code: 43 14 85 c0 0f 84 d5 fe ff ff 31 ed eb 0f 83 c5 01 39 6b 14 0f 86 c5 fe ff ff 8b 7b 10 01 ef e8 b7 e4 d2 ff 48 83 78 70 00 74 e3 <0f> 0b 49 8d b5 a0 00 00 00 e8 62 6f d3 ff e9 c7 fe ff ff 48 8b [ 680.851497] RIP: free_msi_irqs+0x180/0x1b0 RSP: ffffc9000030fbf0 As it turns out, normally the freeing of IRQs that would fix this is called inside of the scope of __igb_close(). However, since the device is already gone by the point we try to unregister the netdevice from the driver due to a hotplug we end up seeing that the netif isn't present and thus, forget to free any of the device IRQs. So: make sure that if we're in the process of dismantling the netdev, we always allow __igb_close() to be called so that IRQs may be freed normally. Additionally, only allow igb_close() to be called from __igb_close() if it hasn't already been called for the given adapter. Signed-off-by:
Lyude Paul <lyude@redhat.com> Fixes: 9474933c ("igb: close/suspend race in netif_device_detach") Cc: Todd Fujinaka <todd.fujinaka@intel.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: stable@vger.kernel.org Tested-by:
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Matt Turner authored
I personally spent a long time trying to decypher why my CPU would not reach deeper C-states. Let's just tell the next user what's going on. Signed-off-by:
Matt Turner <matt.turner@intel.com> Acked-by:
Shannon Nelson <shannon.nelson@oracle.com> Tested-by:
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Jesus Sanchez-Palencia authored
By design, the idleslope increments are restricted to 16.384kbps steps. Add a comment to igb_main.c making that explicit and add one example that illustrates the impact of that. Signed-off-by:
Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com> Tested-by:
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Matt Turner authored
According to section 12.0.3.4.13 "Receive Descriptor Control - RXDCTL" of the Intel
® 82579 Gigabit Ethernet PHY Datasheet v2.1: "HTHRESH should be given a non zero value when ever PTHRESH is used." In RXDCTL(0), PTHRESH lives at bits 5:0, and HTHREST lives at bits 13:8. Set only bit 8 of HTHREST as is done in e1000_flush_rx_ring(). Found by inspection. Signed-off-by: -
Zhang Shengju authored
This patch adds a new function igb_get_max_rss_queues() to get maximum RSS queues, this will reduce duplicate code and facilitate future maintenance. Signed-off-by:
Zhang Shengju <zhangshengju@cmss.chinamobile.com> Tested-by:
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Corinna Vinschen authored
Before libvirt modifies the MAC address and vlan tag for an SRIOV VF for use by a virtual machine (either using vfio device assignment or macvtap passthru mode), it saves the current MAC address and vlan tag so that it can reset them to their original value when the guest is done. Libvirt can't leave the VF MAC set to the value used by the now-defunct guest since it may be started again later using a different VF, but it certainly shouldn't just pick any random value, either. So it saves the state of everything prior to using the VF, and resets it to that. The igb driver initializes the MAC addresses of all VFs to 00:00:00:00:00:00, and reports that when asked (via an RTM_GETLINK netlink message, also visible in the list of VFs in the output of "ip link show"). But when libvirt attempts to restore the MAC address back to 00:00:00:00:00:00 (using an RTM_SETLINK netlink message) the kernel responds with "Invalid argument". Forbidding a reset back to the original value leaves the VF MAC at the value set for the now-defunct virtual machine. Especially on a system with NetworkManager enabled, this has very bad consequences, since NetworkManager forces all interfacess to be IFF_UP all the time - if the same virtual machine is restarted using a different VF (or even on a different host), there will be multiple interfaces watching for traffic with the same MAC address. To allow libvirt to revert to the original state, we need a way to remove the administrative set MAC on a VF, to allow normal host operation again, and to reset/overwrite the VF MAC via VF netdev. This patch implements the outlined scenario by allowing to set the VF MAC to 00:00:00:00:00:00 via RTM_SETLINK on the PF. igb_ndo_set_vf_mac resets the IGB_VF_FLAG_PF_SET_MAC flag to 0, so it's possible to reset the VF MAC back to the original value via the VF netdev. Note: Recent patches to libvirt allow for a workaround if the NIC isn't capable of resetting the administrative MAC back to all 0, but in theory the NIC should allow resetting the MAC in the first place. Signed-off-by:
Corinna Vinschen <vinschen@redhat.com> Tested-by:
Aaron Brown <arron.f.brown@intel.com> Signed-off-by:
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David S. Miller authored
Dmitry Safonov says: ==================== pktgen: Behavior flags fixes v2: o fixed a nitpick from David Miller There are a bunch of fixes/cleanups/Documentations. Diffstat says for itself, regardless added docs and missed flag parameters. ==================== Signed-off-by: -
Dmitry Safonov authored
Don't use error-prone-brute-force way. Signed-off-by:
Dmitry Safonov <dima@arista.com> Signed-off-by:
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Dmitry Safonov authored
Add macro generated pkt_flag_names array, with a little help of which the flags can be printed by using an index. Signed-off-by:
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Dmitry Safonov authored
PKT_FALGS macro will be used to add package behavior names definitions to simplify the code that prints/reads pkg flags. Sorted the array in order of printing the flags in pktgen_if_show() Note: Renamed IPSEC_ON => IPSEC for simplicity. No visible behavior change expected. Signed-off-by:
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Dmitry Safonov authored
o FLOW_SEQ now can be disabled with pgset "flag !FLOW_SEQ" o FLOW_SEQ and FLOW_RND are antonyms, as it's shown by pktgen_if_show() o IPSEC now may be disabled Note, that IPV6 is enabled with dst6/src6 parameters, not with a flag parameter. Signed-off-by:
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Dmitry Safonov authored
o Change process name in ps output: looks like, these days the process is named kpktgend_<cpu>, rather than pktgen/<cpu>. o Use pg_ctrl for start/stop as it can work well with pgset without changes to $(PGDEV) variable. o Clarify a bit needed $(PGDEV) definition for sample scripts and that one needs to `source functions.sh`. o Document how-to unset a behaviour flag, note about history expansion. o Fix pgset spi parameter value. Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Signed-off-by:
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David S. Miller authored
Rahul Lakkireddy says: ==================== cxgb4: fix build error Patch 1 fixes build error with compiling cudbg_zlib.c when CONFIG_ZLIB_DEFLATE macro is not defined. Patch 2 fixes following sparse warning: "Using plain integer as NULL pointer" ==================== Signed-off-by: -
Rahul Lakkireddy authored
memset variables to 0 to fix sparse warnings: drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c:409:42: sparse: Using plain integer as NULL pointer drivers/net/ethernet/chelsio/cxgb4/cudbg_zlib.c:43:47: sparse: Using plain integer as NULL pointer Fixes: ad75b7d3 ("cxgb4: implement ethtool dump data operations") Fixes: 91c1953d ("cxgb4: use zlib deflate to compress firmware dump") Signed-off-by:
Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by:
Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by:
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Rahul Lakkireddy authored
Fixes: drivers/net/ethernet/chelsio/cxgb4/cudbg_zlib.c:39:5: error: redefinition of 'cudbg_compress_buff' int cudbg_compress_buff(struct cudbg_init *pdbg_init, ^~~~~~~~~~~~~~~~~~~ In file included from drivers/net/ethernet/chelsio/cxgb4/cudbg_zlib.c:23:0: drivers/net/ethernet/chelsio/cxgb4/cudbg_zlib.h:45:19: note: previous definition of 'cudbg_compress_buff' was here static inline int cudbg_compress_buff(struct cudbg_init *pdbg_init, ^~~~~~~~~~~~~~~~~~~ Fixes: 91c1953d ("cxgb4: use zlib deflate to compress firmware dump") Signed-off-by: -
David S. Miller authored
Ursula Braun says: ==================== net/smc: socket closing improvements while the first 2 patches are just small cleanups, the remaing patches affect socket closing. ==================== Signed-off-by: -
Ursula Braun authored
If the peer sends a shutdown WRITE, this should not affect sending in general, and waiting for send buffer space in particular. Stop waiting of the local socket for send buffer space only, if peer signals closing, but not if peer signals just shutdown WRITE. Signed-off-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
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Ursula Braun authored
When a socket is closed or shutdown, smc waits for data being transmitted in certain states. If the state changes during this wait, the close switch depending on state should be reentered. In addition, state change is avoided if sending of close or shutdown fails. Signed-off-by:
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Ursula Braun authored
Work requests are needed for every ib_post_send(), among them the ib_post_send() to signal closing. If an smc socket program is cancelled, the smc connections should be cleaned up, and require sending of closing signals to the peer. This may fail, if a wait for a free work request is needed, but is cancelled immediately due to the cancel interrupt. To guarantee notification of the peer, the wait for a work request is changed to uninterruptible. And the area to receive work request completion info with ib_poll_cq() is cleared first. And _tx_ variable names are used in the _tx_routines for the demultiplexing common type in the header. Signed-off-by:
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