net: sysfs: factor out link settings read

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speed_show() and duplex_show() duplicate device validation, RTNL
locking and the link settings query. Move this common work to
sysfs_get_link_ksettings() so later locking changes stay in one place.

RTNL is released before calling sysfs_emit(). The lock only protects the
link settings query; formatting uses the local cmd copy, so the sysfs
output and error handling remain unchanged.

No functional changes.

Assisted-by: LLM
Signed-off-by: Wang Zhan <wang.zhan@smartx.com>
Link: https://patch.msgid.link/20260903133314.3703381-2-wang.zhan@smartx.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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Wang Zhan 2026-09-03 21:33:13 +08:00 • committed by Paolo Abeni

parent bf6f89ccd9

commit fc73b71c1b

1 changed files with 48 additions and 49 deletions

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net/core/net-sysfs.c

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