eth: fbnic: Update fbnic_tlv_attr_get_string() to work like nla_strscpy()

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Allow fbnic_tlv_attr_get_string() to return an error code. In the event the
source mailbox attribute is missing return -EINVAL. Like nla_strscpy() return
-E2BIG when the source string is larger than the destination string. In this
case the amount of data copied is equal to dstsize.

Signed-off-by: Lee Trager <lee@trager.us>
Link: https://patch.msgid.link/20250228191935.3953712-3-lee@trager.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Lee Trager 2025-02-28 11:15:27 -08:00 • committed by Jakub Kicinski

parent 56bcc6ecff

commit e5cf5107c9

2 changed files with 32 additions and 11 deletions

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39

drivers/net/ethernet/meta/fbnic/fbnic_tlv.c

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4

drivers/net/ethernet/meta/fbnic/fbnic_tlv.h

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