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Date: Fri, 13 Dec 2019 16:48:44 +0100 From: Antoine Tenart <antoine.tenart@...tlin.com> To: davem@...emloft.net, sd@...asysnail.net, andrew@...n.ch, f.fainelli@...il.com, hkallweit1@...il.com Cc: Antoine Tenart <antoine.tenart@...tlin.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com, alexandre.belloni@...tlin.com, allan.nielsen@...rochip.com, camelia.groza@....com, Simon.Edelhaus@...antia.com, Igor.Russkikh@...antia.com, jakub.kicinski@...ronome.com Subject: [PATCH net-next v3 15/15] net: macsec: add support for offloading to the MAC This patch adds a new MACsec offloading option, MACSEC_OFFLOAD_MAC, allowing a user to select a MAC as a provider for MACsec offloading operations. Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com> --- drivers/net/macsec.c | 16 +++++++++++++--- include/uapi/linux/if_link.h | 1 + tools/include/uapi/linux/if_link.h | 1 + 3 files changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 8247eb652f57..222b6ed93b27 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -324,7 +324,8 @@ static void macsec_set_shortlen(struct macsec_eth_header *h, size_t data_len) /* Checks if a MACsec interface is being offloaded to an hardware engine */ static bool macsec_is_offloaded(struct macsec_dev *macsec) { - if (macsec->offload == MACSEC_OFFLOAD_PHY) + if (macsec->offload == MACSEC_OFFLOAD_MAC || + macsec->offload == MACSEC_OFFLOAD_PHY) return true; return false; @@ -340,6 +341,9 @@ static bool macsec_check_offload(enum macsec_offload offload, if (offload == MACSEC_OFFLOAD_PHY) return macsec->real_dev->phydev && macsec->real_dev->phydev->macsec_ops; + else if (offload == MACSEC_OFFLOAD_MAC) + return macsec->real_dev->features & NETIF_F_HW_MACSEC && + macsec->real_dev->macsec_ops; return false; } @@ -354,9 +358,14 @@ static const struct macsec_ops *__macsec_get_ops(enum macsec_offload offload, if (offload == MACSEC_OFFLOAD_PHY) ctx->phydev = macsec->real_dev->phydev; + else if (offload == MACSEC_OFFLOAD_MAC) + ctx->netdev = macsec->real_dev; } - return macsec->real_dev->phydev->macsec_ops; + if (offload == MACSEC_OFFLOAD_PHY) + return macsec->real_dev->phydev->macsec_ops; + else + return macsec->real_dev->macsec_ops; } /* Returns a pointer to the MACsec ops struct if any and updates the MACsec @@ -2414,7 +2423,8 @@ static int macsec_upd_offload(struct sk_buff *skb, struct genl_info *info) priv = macsec_priv(loop_dev); - if (!macsec_check_offload(MACSEC_OFFLOAD_PHY, priv)) + if (!macsec_check_offload(MACSEC_OFFLOAD_PHY, priv) && + !macsec_check_offload(MACSEC_OFFLOAD_MAC, priv)) continue; if (priv->offload != MACSEC_OFFLOAD_OFF) diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 024af2d1d0af..771371d5b996 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -489,6 +489,7 @@ enum macsec_validation_type { enum macsec_offload { MACSEC_OFFLOAD_OFF = 0, MACSEC_OFFLOAD_PHY = 1, + MACSEC_OFFLOAD_MAC = 2, __MACSEC_OFFLOAD_END, MACSEC_OFFLOAD_MAX = __MACSEC_OFFLOAD_END - 1, }; diff --git a/tools/include/uapi/linux/if_link.h b/tools/include/uapi/linux/if_link.h index 42efdb84d189..7bf406d3ce62 100644 --- a/tools/include/uapi/linux/if_link.h +++ b/tools/include/uapi/linux/if_link.h @@ -488,6 +488,7 @@ enum macsec_validation_type { enum macsec_offload { MACSEC_OFFLOAD_OFF = 0, MACSEC_OFFLOAD_PHY = 1, + MACSEC_OFFLOAD_MAC = 2, __MACSEC_OFFLOAD_END, MACSEC_OFFLOAD_MAX = __MACSEC_OFFLOAD_END - 1, }; -- 2.23.0
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