[PATCH net-next v3 15/15] net: macsec: add support for offloading to the MAC
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STALE2485d
From: Antoine Tenart <hidden>
Date: 2019-12-13 20:38:43
Also in:
lkml
Subsystem:
networking drivers, networking [macsec], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Sabrina Dubroca, Linus Torvalds
Revision v3 of 3 in this series.
Revisions (3)
- v3 current
- v4 [diff vs current]
- v5 [diff vs current]
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 <redacted> --- 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