From 21114b7feec29e4425a3ac48a037569c016a46c8 Mon Sep 17 00:00:00 2001 From: Antoine Tenart Date: Wed, 25 Mar 2020 15:52:33 +0300 Subject: [PATCH] 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 Signed-off-by: Mark Starovoytov Signed-off-by: Igor Russkikh Signed-off-by: David S. Miller --- drivers/net/macsec.c | 13 +++++++++++-- include/uapi/linux/if_link.h | 1 + tools/include/uapi/linux/if_link.h | 1 + 3 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 35abebe95b79..d29c072e19af 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -339,7 +339,8 @@ 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; @@ -355,6 +356,9 @@ 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; } @@ -369,9 +373,14 @@ 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 diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 61e0801c82df..d6ccd0105c05 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 024af2d1d0af..771371d5b996 100644 --- a/tools/include/uapi/linux/if_link.h +++ b/tools/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, };