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* kernel: bump 4.14 to 4.14.36Koen Vandeputte2018-04-261-1/+1
| | | | | | | | | | | | | | | | Refreshed all patches. Compile-tested on: cns3xxx, imx6 Runtime-tested on: cns3xxx, imx6 Fixes for CVEs: CVE-2018-1108 CVE-2018-1092 CVE-2018-1094 CVE-2018-1095 Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com> Tested-by: Stijn Segers <foss@volatilesystems.org>
* cns3xxx: remove linux 4.9 supportKoen Vandeputte2018-02-132-106/+0
| | | | | | | | - Remove kernel 4.9 support - Apply specific 4.14 changes directly to source - Refreshed all Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: refresh patchesKoen Vandeputte2018-01-178-21/+21
| | | | Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: remove deprecated uart flagsKoen Vandeputte2018-01-171-0/+29
| | | | | | | | Flag UPF_NO_TXEN_TEST is deprecated. Remove it. Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: fix ethernet IRQ imbalance in 4.14Koen Vandeputte2018-01-171-0/+77
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel 4.14 contains more warnings regarding NAPI usage, which showed following warning: [ 4016.420000] ------------[ cut here ]------------ [ 4016.430000] WARNING: CPU: 1 PID: 14 at kernel/irq/manage.c:525 __enable_irq+0x3c/0x78 [ 4016.440000] Unbalanced enable for IRQ 51 [ 4016.440000] Modules linked in: ath9k ath9k_common pppoe ppp_async ath9k_hw ath pppox ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG slhc nf_reject_ipv4 nf_nat_redirs [ 4016.500000] CPU: 1 PID: 14 Comm: ksoftirqd/1 Tainted: G W 4.14.11 #0 [ 4016.500000] Hardware name: Gateworks Corporation Laguna Platform [ 4016.510000] Backtrace: [ 4016.510000] [<c010a28c>] (dump_backtrace) from [<c010a56c>] (show_stack+0x18/0x1c) [ 4016.520000] r7:c059df4b r6:00000000 r5:60000093 r4:00000000 [ 4016.530000] [<c010a554>] (show_stack) from [<c048b04c>] (dump_stack+0x94/0xb4) [ 4016.530000] [<c048afb8>] (dump_stack) from [<c011760c>] (__warn+0xc8/0xf8) [ 4016.540000] r7:c059df4b r6:c015144c r5:00000000 r4:cf863e08 [ 4016.550000] [<c0117544>] (__warn) from [<c011767c>] (warn_slowpath_fmt+0x40/0x48) [ 4016.550000] r9:cf863eb0 r8:00000036 r7:00000000 r6:c0636360 r5:00000033 r4:cf80a500 [ 4016.560000] [<c0117640>] (warn_slowpath_fmt) from [<c015144c>] (__enable_irq+0x3c/0x78) [ 4016.570000] r3:00000033 r2:c059e0c5 [ 4016.570000] [<c0151410>] (__enable_irq) from [<c01514ec>] (enable_irq+0x64/0x7c) [ 4016.580000] [<c0151488>] (enable_irq) from [<c0335c14>] (eth_poll+0x28c/0x558) [ 4016.590000] r5:d08926c0 r4:cf894488 [ 4016.590000] [<c0335988>] (eth_poll) from [<c03b1718>] (net_rx_action+0xfc/0x2e8) [ 4016.600000] r10:cf863eb8 r9:cf863eb0 r8:00000001 r7:0f7b5000 r6:c0636360 r5:cfdeb360 [ 4016.610000] r4:cf894488 [ 4016.610000] [<c03b161c>] (net_rx_action) from [<c0101510>] (__do_softirq+0xe0/0x228) [ 4016.620000] r10:00000100 r9:c070204c r8:c0702040 r7:00000003 r6:00000008 r5:40000003 [ 4016.620000] r4:cf862000 [ 4016.630000] [<c0101430>] (__do_softirq) from [<c011ae28>] (run_ksoftirqd+0x34/0x58) [ 4016.630000] r10:c0133964 r9:00000000 r8:00000001 r7:00000000 r6:c070b44c r5:cf862000 [ 4016.640000] r4:cf8037e0 [ 4016.640000] [<c011adf4>] (run_ksoftirqd) from [<c0133adc>] (smpboot_thread_fn+0x178/0x190) [ 4016.650000] [<c0133964>] (smpboot_thread_fn) from [<c013099c>] (kthread+0x11c/0x138) [ 4016.660000] r9:cf8037e0 r8:cf802cdc r7:cf839df8 r6:cf803800 r5:00000000 r4:cf802cc0 [ 4016.670000] [<c0130880>] (kthread) from [<c0107218>] (ret_from_fork+0x14/0x3c) [ 4016.680000] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0130880 [ 4016.680000] r4:cf803800 r3:cf862000 [ 4016.690000] ---[ end trace 51114df08f429115 ]--- This is triggered by calling eth_schedule_poll(sw) after the IRQ has been re-enabled. Rework the network code to only enable IRQ's again if NAPI agrees it's safe to do so. Also only re-enable IRQ *after* cleaning up the RX ring and re-enabling DMA, which otherwise resulted in ugly warnings regarding dirty page fragments. These popped up nearly immediately when building the kernel with O2 iso Os. --> Note that this change fixes stability issues, at the cost of ~8% throughput performance. While at it, also change the iface name being used in warning prints, making it more obvious: "switch%d" --> "cns3xxx_eth" The changes have been tested on 4 boards, each moving ~30TB of data Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: update patches for 4.14Koen Vandeputte2018-01-176-64/+85
| | | | Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: copy patches for kernel 4.14Koen Vandeputte2018-01-1724-0/+1170
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
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