netdev - [PATCH net-next 02/13] mlxsw: reg: Add ingress RIF related fields to SFMR register

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Date:   Sun, 19 Jun 2022 13:29:10 +0300
From:   Ido Schimmel <idosch@...dia.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, petrm@...dia.com, amcohen@...dia.com,
        mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 02/13] mlxsw: reg: Add ingress RIF related fields to SFMR register

From: Amit Cohen <amcohen@...dia.com>

SFMR register creates and configures FIDs. As preparation for unified
bridge model, add some required fields for future use.

On ingress, after ingress ACL, a packet needs to be classified to a FID.
The key for this lookup can be one of:
1. VID. When port is not in virtual mode.
2. {RQ, VID}. When port is in virtual mode.
3. FID. When FID was set by ingress ACL.
   For example, via VR_AND_FID_ACTION.

Since RITR no longer performs ingress configuration, the ingress RIF for
the last entry type needs to be set via new fields in SFMR - 'irif_v'
and 'irif'.

Add the two mentioned fields for future use.

Signed-off-by: Amit Cohen <amcohen@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/reg.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 18b9fbf11d71..26495b29e632 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -1818,6 +1818,26 @@ MLXSW_ITEM32(reg, sfmr, vv, 0x10, 31, 1);
  */
 MLXSW_ITEM32(reg, sfmr, vni, 0x10, 0, 24);
 
+/* reg_sfmr_irif_v
+ * Ingress RIF valid.
+ * 0 - Ingress RIF is not valid, no ingress RIF assigned.
+ * 1 - Ingress RIF valid.
+ * Must not be set for a non valid RIF.
+ * Access: RW
+ *
+ * Note: Reserved when legacy bridge model is used.
+ */
+MLXSW_ITEM32(reg, sfmr, irif_v, 0x14, 24, 1);
+
+/* reg_sfmr_irif
+ * Ingress RIF (Router Interface).
+ * Range is 0..cap_max_router_interfaces-1.
+ * Access: RW
+ *
+ * Note: Reserved when legacy bridge model is used and when irif_v=0.
+ */
+MLXSW_ITEM32(reg, sfmr, irif, 0x14, 0, 16);
+
 static inline void mlxsw_reg_sfmr_pack(char *payload,
 				       enum mlxsw_reg_sfmr_op op, u16 fid,
 				       u16 fid_offset)
-- 
2.36.1