Commit 68e48278 authored by Rahul Rameshbabu's avatar Rahul Rameshbabu Committed by Ma Wupeng
Browse files

macsec: Enable devices to advertise whether they update sk_buff md_dst during offloads 

stable inclusion
from stable-v6.6.30
commit ee5dde3aa2fd887a240146a000075a72eeedea04
bugzilla: https://gitee.com/openeuler/kernel/issues/I9MPZ8

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=ee5dde3aa2fd887a240146a000075a72eeedea04



--------------------------------

commit 475747a19316b08e856c666a20503e73d7ed67ed upstream.

Omit rx_use_md_dst comment in upstream commit since macsec_ops is not
documented.

Cannot know whether a Rx skb missing md_dst is intended for MACsec or not
without knowing whether the device is able to update this field during an
offload. Assume that an offload to a MACsec device cannot support updating
md_dst by default. Capable devices can advertise that they do indicate that
an skb is related to a MACsec offloaded packet using the md_dst.

Cc: Sabrina Dubroca <sd@queasysnail.net>
Cc: stable@vger.kernel.org
Fixes: 860ead89 ("net/macsec: Add MACsec skb_metadata_dst Rx Data path support")
Signed-off-by: default avatarRahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: default avatarBenjamin Poirier <bpoirier@nvidia.com>
Reviewed-by: default avatarCosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: default avatarSabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/20240423181319.115860-2-rrameshbabu@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarZhangPeng <zhangpeng362@huawei.com>
parent 8e51c01a

include/net/macsec.h

+1 −0
Original line number Diff line number Diff line
@@ -303,6 +303,7 @@ struct macsec_ops { 
	int (*mdo_get_tx_sa_stats)(struct macsec_context *ctx);

	int (*mdo_get_rx_sc_stats)(struct macsec_context *ctx);

	int (*mdo_get_rx_sa_stats)(struct macsec_context *ctx);

	bool rx_uses_md_dst;

};



void macsec_pn_wrapped(struct macsec_secy *secy, struct macsec_tx_sa *tx_sa);