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Filename Latest commit message Latest commit date
Jacky Chou cfb4552c0c net: ftgmac100: Enable TX interrupt to avoid TX timeout 
[ Upstream commit fef2843bb49f414d1523ca007d088071dee0e055 ]

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>
2024-11-08 16:20:24 +01:00
arch arm64: dts: rockchip: override BIOS_DISABLE signal via GPIO hog on RK3399 Puma 2024-11-08 16:20:24 +01:00
block block: initialize integrity buffer to zero before writing it to media 2024-09-12 11:03:50 +02:00
certs
crypto crypto: ecrdsa - Fix module auto-load on add_key 2024-06-16 13:28:51 +02:00
Documentation overflow: Implement size_t saturating arithmetic helpers 2024-09-04 13:14:51 +02:00
drivers net: ftgmac100: Enable TX interrupt to avoid TX timeout 2024-11-08 16:20:24 +01:00
fs nilfs2: protect references to superblock parameters exposed in sysfs 2024-09-12 11:03:56 +02:00
include ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance() 2024-09-12 11:03:56 +02:00
init init: open /initrd.image with O_LARGEFILE 2024-04-13 12:51:36 +02:00
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:15:02 +02:00
kernel rtmutex: Drop rt_mutex::wait_lock before scheduling 2024-09-12 11:03:57 +02:00
lib lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() 2024-09-12 11:03:55 +02:00
LICENSES
mm memcg_write_event_control(): fix a user-triggerable oops 2024-09-04 13:14:50 +02:00
net net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket 2024-09-12 11:03:57 +02:00
samples media: rename VFL_TYPE_GRABBER to _VIDEO 2024-03-26 18:22:22 -04:00
scripts scripts: kconfig: merge_config: config files: add a trailing newline 2024-11-08 16:20:24 +01:00
security smack: unix sockets: fix accept()ed socket label 2024-09-12 11:03:52 +02:00
sound ASoC: topology: Properly initialize soc_enum values 2024-09-12 11:03:53 +02:00
tools libbpf: Add NULL checks to bpf_object__{prev_map,next_map} 2024-09-12 11:03:54 +02:00
usr
virt KVM: async_pf: Cleanup kvm_setup_async_pf() 2024-05-02 16:18:32 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.284 2024-09-12 11:03:57 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
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Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.