Merge branch 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

Leon Romanovsky says:

====================
This PR is collected from
https://lore.kernel.org/all/cover.1695296682.git.leon@kernel.org

This series from Patrisious extends mlx5 to support IPsec packet offload
in multiport devices (MPV, see [1] for more details).

These devices have single flow steering logic and two netdev interfaces,
which require extra logic to manage IPsec configurations as they performed
on netdevs.

[1] https://lore.kernel.org/linux-rdma/20180104152544.28919-1-leon@kernel.org/

* 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
  net/mlx5: Handle IPsec steering upon master unbind/bind
  net/mlx5: Configure IPsec steering for ingress RoCEv2 MPV traffic
  net/mlx5: Configure IPsec steering for egress RoCEv2 MPV traffic
  net/mlx5: Add create alias flow table function to ipsec roce
  net/mlx5: Implement alias object allow and create functions
  net/mlx5: Add alias flow table bits
  net/mlx5: Store devcom pointer inside IPsec RoCE
  net/mlx5: Register mlx5e priv to devcom in MPV mode
  RDMA/mlx5: Send events from IB driver about device affiliation state
  net/mlx5: Introduce ifc bits for migration in a chunk mode

====================

Link: https://lore.kernel.org/r/20231002083832.19746-1-leon@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 63 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index acb40770cf0c..afc3d488b8f6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -69,6 +69,7 @@
 #include "en/htb.h"
 #include "qos.h"
 #include "en/trap.h"
+#include "lib/devcom.h"
 
 bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev, u8 page_shift,
 					    enum mlx5e_mpwrq_umr_mode umr_mode)
@@ -178,6 +179,61 @@ static void mlx5e_disable_async_events(struct mlx5e_priv *priv)
 	mlx5_notifier_unregister(priv->mdev, &priv->events_nb);
 }
 
+static int mlx5e_devcom_event_mpv(int event, void *my_data, void *event_data)
+{
+	struct mlx5e_priv *slave_priv = my_data;
+
+	switch (event) {
+	case MPV_DEVCOM_MASTER_UP:
+		mlx5_devcom_comp_set_ready(slave_priv->devcom, true);
+		break;
+	case MPV_DEVCOM_MASTER_DOWN:
+		/* no need for comp set ready false since we unregister after
+		 * and it hurts cleanup flow.
+		 */
+		break;
+	case MPV_DEVCOM_IPSEC_MASTER_UP:
+	case MPV_DEVCOM_IPSEC_MASTER_DOWN:
+		mlx5e_ipsec_handle_mpv_event(event, my_data, event_data);
+		break;
+	}
+
+	return 0;
+}
+
+static int mlx5e_devcom_init_mpv(struct mlx5e_priv *priv, u64 *data)
+{
+	priv->devcom = mlx5_devcom_register_component(priv->mdev->priv.devc,
+						      MLX5_DEVCOM_MPV,
+						      *data,
+						      mlx5e_devcom_event_mpv,
+						      priv);
+	if (IS_ERR_OR_NULL(priv->devcom))
+		return -EOPNOTSUPP;
+
+	if (mlx5_core_is_mp_master(priv->mdev)) {
+		mlx5_devcom_send_event(priv->devcom, MPV_DEVCOM_MASTER_UP,
+				       MPV_DEVCOM_MASTER_UP, priv);
+		mlx5e_ipsec_send_event(priv, MPV_DEVCOM_IPSEC_MASTER_UP);
+	}
+
+	return 0;
+}
+
+static void mlx5e_devcom_cleanup_mpv(struct mlx5e_priv *priv)
+{
+	if (IS_ERR_OR_NULL(priv->devcom))
+		return;
+
+	if (mlx5_core_is_mp_master(priv->mdev)) {
+		mlx5_devcom_send_event(priv->devcom, MPV_DEVCOM_MASTER_DOWN,
+				       MPV_DEVCOM_MASTER_DOWN, priv);
+		mlx5e_ipsec_send_event(priv, MPV_DEVCOM_IPSEC_MASTER_DOWN);
+	}
+
+	mlx5_devcom_unregister_component(priv->devcom);
+}
+
 static int blocking_event(struct notifier_block *nb, unsigned long event, void *data)
 {
 	struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, blocking_events_nb);
@@ -192,6 +248,13 @@ static int blocking_event(struct notifier_block *nb, unsigned long event, void *
 			return NOTIFY_BAD;
 		}
 		break;
+	case MLX5_DRIVER_EVENT_AFFILIATION_DONE:
+		if (mlx5e_devcom_init_mpv(priv, data))
+			return NOTIFY_BAD;
+		break;
+	case MLX5_DRIVER_EVENT_AFFILIATION_REMOVED:
+		mlx5e_devcom_cleanup_mpv(priv);
+		break;
 	default:
 		return NOTIFY_DONE;
 	}