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linux/drivers/net/netdevsim
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Breno Leitao 95af085073 netdevsim: set the carrier when the device goes up 
[ Upstream commit 1a8fed52f7 ]

Bringing a linked netdevsim device down and then up causes communication
failure because both interfaces lack carrier. Basically a ifdown/ifup on
the interface make the link broken.

Commit 3762ec05a9 ("netdevsim: add NAPI support") added supported
for NAPI, calling netif_carrier_off() in nsim_stop(). This patch
re-enables the carrier symmetrically on nsim_open(), in case the device
is linked and the peer is up.

Signed-off-by: Breno Leitao <leitao@debian.org>
Fixes: 3762ec05a9 ("netdevsim: add NAPI support")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20251014-netdevsim_fix-v2-1-53b40590dae1@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-23 16:20:31 +02:00
..
bpf.c netdevsim: Don't accept device bound programs 2023-11-23 13:04:04 -08:00
bus.c netdevsim: allow two netdevsim ports to be connected 2024-03-01 10:43:10 +00:00
dev.c netdevsim: use cond_resched() in nsim_dev_trap_report_work() 2024-10-15 09:58:43 -07:00
ethtool.c net: Add struct kernel_ethtool_ts_info 2024-07-15 08:02:26 -07:00
fib.c netdevsim: Add trailing zero to terminate the string in nsim_nexthop_bucket_activity_write() 2024-10-29 11:43:01 -07:00
health.c netdevsim: prevent bad user input in nsim_dev_health_break_write() 2024-12-27 14:02:02 +01:00
hwstats.c netdevsim: Fix hwstats debugfs file permissions 2022-09-19 14:40:38 -07:00
ipsec.c netdevsim: print human readable IP address 2025-02-21 14:01:45 +01:00
macsec.c net: macsec: move sci_to_cpu to macsec header 2023-12-27 13:08:09 +00:00
Makefile netdevsim: add dummy macsec offload 2023-07-14 09:16:53 +01:00
netdev.c netdevsim: set the carrier when the device goes up 2025-10-23 16:20:31 +02:00
netdevsim.h net: netdevsim: try to close UDP port harness races 2025-02-08 09:58:05 +01:00
psample.c netdevsim: Only use sampling truncation length when valid 2021-04-22 13:23:56 -07:00
udp_tunnels.c net: netdevsim: try to close UDP port harness races 2025-02-08 09:58:05 +01:00