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Jacky Chou 38859fb5bd net: ftgmac100: Enable TX interrupt to avoid TX timeout 
[ Upstream commit fef2843bb4 ]

Currently, the driver only enables RX interrupt to handle RX
packets and TX resources. Sometimes there is not RX traffic,
so the TX resource needs to wait for RX interrupt to free.
This situation will toggle the TX timeout watchdog when the MAC
TX ring has no more resources to transmit packets.
Therefore, enable TX interrupt to release TX resources at any time.

When I am verifying iperf3 over UDP, the network hangs.
Like the log below.

root# iperf3 -c 192.168.100.100 -i1 -t10 -u -b0
Connecting to host 192.168.100.100, port 5201
[  4] local 192.168.100.101 port 35773 connected to 192.168.100.100 port 5201
[ ID] Interval           Transfer     Bandwidth       Total Datagrams
[  4]   0.00-20.42  sec   160 KBytes  64.2 Kbits/sec  20
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
[  4]  20.42-20.42  sec  0.00 Bytes  0.00 bits/sec  0
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval          Transfer    Bandwidth      Jitter   Lost/Total Datagrams
[  4]   0.00-20.42  sec  160 KBytes 64.2 Kbits/sec 0.000 ms 0/20 (0%)
[  4] Sent 20 datagrams
iperf3: error - the server has terminated

The network topology is FTGMAC connects directly to a PC.
UDP does not need to wait for ACK, unlike TCP.
Therefore, FTGMAC needs to enable TX interrupt to release TX resources instead
of waiting for the RX interrupt.

Fixes: 10cbd64076 ("ftgmac100: Rework NAPI & interrupts handling")
Signed-off-by: Jacky Chou <jacky_chou@aspeedtech.com>
Link: https://patch.msgid.link/20240906062831.2243399-1-jacky_chou@aspeedtech.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-09-18 19:24:09 +02:00
arch arm64: dts: rockchip: fix PMIC interrupt pin in pinctrl for ROCK Pi E 2024-09-18 19:24:07 +02:00
block block: remove the blk_flush_integrity call in blk_integrity_unregister 2024-09-08 07:54:47 +02:00
certs
crypto crypto: aead,cipher - zeroize key buffer after use 2024-07-11 12:49:04 +02:00
Documentation hwspinlock: Introduce hwspin_lock_bust() 2024-09-08 07:54:43 +02:00
drivers net: ftgmac100: Enable TX interrupt to avoid TX timeout 2024-09-18 19:24:09 +02:00
fs NFS: Avoid unnecessary rescanning of the per-server delegation list 2024-09-18 19:24:06 +02:00
include net/mlx5: Correct TASR typo into TSAR 2024-09-18 19:24:08 +02:00
init rust: fix the default format for CONFIG_{RUSTC,BINDGEN}_VERSION_TEXT 2024-08-29 17:33:29 +02:00
io_uring io_uring: fix io_match_task must_hold 2024-08-03 08:54:41 +02:00
ipc sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table) 2024-08-11 12:47:13 +02:00
kernel membarrier: riscv: Add full memory barrier in switch_mm() 2024-09-12 11:11:45 +02:00
lib lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() 2024-09-12 11:11:39 +02:00
LICENSES
mm mm: avoid leaving partial pfn mappings around in error case 2024-09-18 19:24:07 +02:00
net fou: fix initialization of grc 2024-09-18 19:24:09 +02:00
rust rust: kbuild: fix export of bss symbols 2024-09-12 11:11:32 +02:00
samples bpf: Replace bpf_lpm_trie_key 0-length array with flexible array 2024-08-19 06:04:27 +02:00
scripts scripts: kconfig: merge_config: config files: add a trailing newline 2024-09-18 19:24:05 +02:00
security smack: unix sockets: fix accept()ed socket label 2024-09-12 11:11:29 +02:00
sound ASoC: sunxi: sun4i-i2s: fix LRCLK polarity in i2s mode 2024-09-12 11:11:44 +02:00
tools selftests/bpf: Support SOCK_STREAM in unix_inet_redir_to_connected() 2024-09-18 19:24:07 +02:00
usr
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.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
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.mailmap
.rustfmt.toml
COPYING
CREDITS USB: Remove Wireless USB and UWB documentation 2023-08-09 14:17:32 +02:00
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MAINTAINERS membarrier: riscv: Add full memory barrier in switch_mm() 2024-09-12 11:11:45 +02:00
Makefile Linux 6.6.51 2024-09-12 11:11:45 +02:00
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