From 03a9d11e6eeb30363971a9e372b4d61b6e817882 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Thu, 14 Jul 2016 10:32:44 +0300 Subject: [PATCH] net/mlx5e: Add TC drop and mirred/redirect action parsing for SRIOV offloads Add the setup code that parses the TC actions needed to support offloading drop and mirred/redirect for SRIOV e-switch. We can redirect between two devices if they belong to the same HW switch, compare the switchdev HW ID attribute to enforce that. Signed-off-by: Or Gerlitz Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx5/core/en_tc.c | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 57b76f759ee8..9a66441262d2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -37,8 +37,11 @@ #include #include #include +#include +#include #include "en.h" #include "en_tc.h" +#include "eswitch.h" struct mlx5e_tc_flow { struct rhash_head node; @@ -339,6 +342,56 @@ static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, return 0; } +static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, + u32 *action, u32 *dest_vport) +{ + const struct tc_action *a; + + if (tc_no_actions(exts)) + return -EINVAL; + + *action = 0; + + tc_for_each_action(a, exts) { + /* Only support a single action per rule */ + if (*action) + return -EINVAL; + + if (is_tcf_gact_shot(a)) { + *action = MLX5_FLOW_CONTEXT_ACTION_DROP | + MLX5_FLOW_CONTEXT_ACTION_COUNT; + continue; + } + + if (is_tcf_mirred_redirect(a)) { + int ifindex = tcf_mirred_ifindex(a); + struct net_device *out_dev; + struct mlx5e_priv *out_priv; + struct mlx5_eswitch_rep *out_rep; + + out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex); + + if (!switchdev_port_same_parent_id(priv->netdev, out_dev)) { + pr_err("devices %s %s not on same switch HW, can't offload forwarding\n", + priv->netdev->name, out_dev->name); + return -EINVAL; + } + + out_priv = netdev_priv(out_dev); + out_rep = out_priv->ppriv; + if (out_rep->vport == 0) + *dest_vport = FDB_UPLINK_VPORT; + else + *dest_vport = out_rep->vport; + *action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; + continue; + } + + return -EINVAL; + } + return 0; +} + int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol, struct tc_cls_flower_offload *f) { -- 2.20.1