[PATCH net-next 4/8] nfp: flower: add per repr private data for LAG offload

[Jakub Kicinski]

From: John Hurley <john.hur...@netronome.com>

Add a bitmap to each flower repr to track its state if it is enslaved by a
bond. This LAG state may be different to the port state - for example, the
port may be up but LAG state may be down due to the selection in an
active/backup bond.

Signed-off-by: John Hurley <john.hur...@netronome.com>
Reviewed-by: Pieter Jansen van Vuuren <pieter.jansenvanvuu...@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 .../net/ethernet/netronome/nfp/flower/main.c  | 26 +++++++++++++++++++
 .../net/ethernet/netronome/nfp/flower/main.h  |  8 ++++++
 2 files changed, 34 insertions(+)

diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c 
b/drivers/net/ethernet/netronome/nfp/flower/main.c
index 1910c3e2b3e5..202284b42fd9 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
@@ -185,6 +185,10 @@ nfp_flower_repr_netdev_init(struct nfp_app *app, struct 
net_device *netdev)
 static void
 nfp_flower_repr_netdev_clean(struct nfp_app *app, struct net_device *netdev)
 {
+       struct nfp_repr *repr = netdev_priv(netdev);
+
+       kfree(repr->app_priv);
+
        tc_setup_cb_egdev_unregister(netdev, nfp_flower_setup_tc_egress_cb,
                                     netdev_priv(netdev));
 }
@@ -225,7 +229,9 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
        u8 nfp_pcie = nfp_cppcore_pcie_unit(app->pf->cpp);
        struct nfp_flower_priv *priv = app->priv;
        atomic_t *replies = &priv->reify_replies;
+       struct nfp_flower_repr_priv *repr_priv;
        enum nfp_port_type port_type;
+       struct nfp_repr *nfp_repr;
        struct nfp_reprs *reprs;
        int i, err, reify_cnt;
        const u8 queue = 0;
@@ -248,6 +254,15 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
                        goto err_reprs_clean;
                }
 
+               repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
+               if (!repr_priv) {
+                       err = -ENOMEM;
+                       goto err_reprs_clean;
+               }
+
+               nfp_repr = netdev_priv(repr);
+               nfp_repr->app_priv = repr_priv;
+
                /* For now we only support 1 PF */
                WARN_ON(repr_type == NFP_REPR_TYPE_PF && i);
 
@@ -324,6 +339,8 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct 
nfp_flower_priv *priv)
 {
        struct nfp_eth_table *eth_tbl = app->pf->eth_tbl;
        atomic_t *replies = &priv->reify_replies;
+       struct nfp_flower_repr_priv *repr_priv;
+       struct nfp_repr *nfp_repr;
        struct sk_buff *ctrl_skb;
        struct nfp_reprs *reprs;
        int err, reify_cnt;
@@ -351,6 +368,15 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct 
nfp_flower_priv *priv)
                        goto err_reprs_clean;
                }
 
+               repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
+               if (!repr_priv) {
+                       err = -ENOMEM;
+                       goto err_reprs_clean;
+               }
+
+               nfp_repr = netdev_priv(repr);
+               nfp_repr->app_priv = repr_priv;
+
                port = nfp_port_alloc(app, NFP_PORT_PHYS_PORT, repr);
                if (IS_ERR(port)) {
                        err = PTR_ERR(port);
diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.h 
b/drivers/net/ethernet/netronome/nfp/flower/main.h
index 6e82aa4ed84b..7ce255705446 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.h
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.h
@@ -160,6 +160,14 @@ struct nfp_flower_priv {
        struct nfp_mtu_conf mtu_conf;
 };
 
+/**
+ * struct nfp_flower_repr_priv - Flower APP per-repr priv data
+ * @lag_port_flags:    Extended port flags to record lag state of repr
+ */
+struct nfp_flower_repr_priv {
+       unsigned long lag_port_flags;
+};
+
 struct nfp_fl_key_ls {
        u32 key_layer_two;
        u8 key_layer;
-- 
2.17.0