Messages in this thread Patch in this message |  | | From | Antoine Tenart <> | Subject | [PATCH net-next v5 10/15] net: macsec: PN wrap callback | Date | Fri, 10 Jan 2020 17:20:05 +0100 |
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Allow to call macsec_pn_wrapped from hardware drivers to notify when a PN rolls over. Some drivers might used an interrupt to implement this.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com> --- drivers/net/macsec.c | 24 ++++++++++++++++++------ include/net/macsec.h | 2 ++ 2 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index ace7fc98e8dd..fc481616632c 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -423,6 +423,22 @@ static struct macsec_eth_header *macsec_ethhdr(struct sk_buff *skb) return (struct macsec_eth_header *)skb_mac_header(skb); } +static void __macsec_pn_wrapped(struct macsec_secy *secy, + struct macsec_tx_sa *tx_sa) +{ + pr_debug("PN wrapped, transitioning to !oper\n"); + tx_sa->active = false; + if (secy->protect_frames) + secy->operational = false; +} + +void macsec_pn_wrapped(struct macsec_secy *secy, struct macsec_tx_sa *tx_sa) +{ + spin_lock_bh(&tx_sa->lock); + __macsec_pn_wrapped(secy, tx_sa); + spin_unlock_bh(&tx_sa->lock); +} + static u32 tx_sa_update_pn(struct macsec_tx_sa *tx_sa, struct macsec_secy *secy) { u32 pn; @@ -431,12 +447,8 @@ static u32 tx_sa_update_pn(struct macsec_tx_sa *tx_sa, struct macsec_secy *secy) pn = tx_sa->next_pn; tx_sa->next_pn++; - if (tx_sa->next_pn == 0) { - pr_debug("PN wrapped, transitioning to !oper\n"); - tx_sa->active = false; - if (secy->protect_frames) - secy->operational = false; - } + if (tx_sa->next_pn == 0) + __macsec_pn_wrapped(secy, tx_sa); spin_unlock_bh(&tx_sa->lock); return pn; diff --git a/include/net/macsec.h b/include/net/macsec.h index 4d0afb79259e..a08f19099c7a 100644 --- a/include/net/macsec.h +++ b/include/net/macsec.h @@ -220,4 +220,6 @@ struct macsec_ops { int (*mdo_del_txsa)(struct macsec_context *ctx); }; +void macsec_pn_wrapped(struct macsec_secy *secy, struct macsec_tx_sa *tx_sa); + #endif /* _NET_MACSEC_H_ */ -- 2.24.1
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