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| author |   Hadar Hen Zion <hadarh@mellanox.com> | 2016-11-07 15:14:48 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-11-09 13:41:57 -0500 |
| commit | a54e20b4fcae8730f51b1920ff190e2a6f1fcb04 (patch) | |
| tree | 01f40c987a2d59ac69f3880bf17e198eb7252f91 /drivers/net/ethernet/mellanox/mlx5/core/eswitch.h | |
| parent | net/mlx5e: Add ndo_udp_tunnel_add to VF representors (diff) | |
| download | linux-dev-a54e20b4fcae8730f51b1920ff190e2a6f1fcb04.tar.xz linux-dev-a54e20b4fcae8730f51b1920ff190e2a6f1fcb04.zip | |
net/mlx5e: Add basic TC tunnel set action for SRIOV offloads
In mlx5 HW, encapsulation is offloaded by the steering rule having
index into an encapsulation table containing the entire set of headers
to be added by the HW. The driver sets these headers in a buffer when we
are offloading the action.
The code maintains mlx5_encap_entry for each encap header it has
encountered when attempted to offload TC tunnel set action.
This entry maintains a linked list of all the flows sharing the same
encap header, when the last flow is removed from the list the encap
entry is removed.
The actual encap_header is allocated by the driver in the hardware only
if we have layer two neighbour info when the encap entry is created.
While the flow is in the driver, the driver holds a reference on the
neighbour.
When a new flow with encap action is inserted, the code first checks if
the required encap entry exists according to the tunnel set parameters.
If it does the encap is shared, otherwise a new mlx5_encap_entry is
created.
TC action parsing implementation in the driver assumes that tunnel set
action is provided in the same order set by the user, e.g before the
mirred_redirect action.
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/eswitch.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/eswitch.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h index 6d414cb1b75f..40482e841413 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -199,6 +199,7 @@ struct mlx5_esw_offload { struct mlx5_flow_table *ft_offloads; struct mlx5_flow_group *vport_rx_group; struct mlx5_eswitch_rep *vport_reps; + DECLARE_HASHTABLE(encap_tbl, 8); }; struct mlx5_eswitch { @@ -272,6 +273,24 @@ enum { #define MLX5_FLOW_CONTEXT_ACTION_VLAN_POP 0x40 #define MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH 0x80 +struct mlx5_encap_info { + __be32 daddr; + __be32 tun_id; + __be16 tp_dst; +}; + +struct mlx5_encap_entry { + struct hlist_node encap_hlist; + struct list_head flows; + u32 encap_id; + struct neighbour *n; + struct mlx5_encap_info tun_info; + unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ + + struct net_device *out_dev; + int tunnel_type; +}; + struct mlx5_esw_flow_attr { struct mlx5_eswitch_rep *in_rep; struct mlx5_eswitch_rep *out_rep; @@ -279,6 +298,7 @@ struct mlx5_esw_flow_attr { int action; u16 vlan; bool vlan_handled; + struct mlx5_encap_entry *encap; }; int mlx5_eswitch_sqs2vport_start(struct mlx5_eswitch *esw, |