octeontx2-af: Add L3 and L4 packet verification mailbox

Adds mailbox support for L4 checksum verification
and L3 and L4 length verification configuration.
Signed-off-by: Vidhya Raman <vraman@marvell.com>
Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/mbox.h

@@ -203,6 +203,7 @@ M(NIX_LF_STOP_RX,	0x800e, nix_lf_stop_rx, msg_req, msg_rsp)	\
 M(NIX_MARK_FORMAT_CFG,	0x800f, nix_mark_format_cfg,			\
 				 nix_mark_format_cfg,			\
 				 nix_mark_format_cfg_rsp)		\
+M(NIX_SET_RX_CFG,	0x8010, nix_set_rx_cfg, nix_rx_cfg, msg_rsp)	\
 M(NIX_RXVLAN_ALLOC,	0x8012, nix_rxvlan_alloc, msg_req, msg_rsp)
 
 /* Messages initiated by AF (range 0xC00 - 0xDFF) */
@@ -609,6 +610,15 @@ struct nix_rx_mode {
 	u16	mode;
 };
 
+struct nix_rx_cfg {
+	struct mbox_msghdr hdr;
+#define NIX_RX_OL3_VERIFY   BIT(0)
+#define NIX_RX_OL4_VERIFY   BIT(1)
+	u8 len_verify; /* Outer L3/L4 len check */
+#define NIX_RX_CSUM_OL4_VERIFY  BIT(0)
+	u8 csum_verify; /* Outer L4 checksum verification */
+};
+
 struct nix_frs_cfg {
 	struct mbox_msghdr hdr;
 	u8	update_smq;    /* Update SMQ's min/max lens */

drivers/net/ethernet/marvell/octeontx2/af/rvu.h

@@ -433,6 +433,9 @@ int rvu_mbox_handler_nix_lf_stop_rx(struct rvu *rvu, struct msg_req *req,
 int rvu_mbox_handler_nix_mark_format_cfg(struct rvu *rvu,
 					 struct nix_mark_format_cfg  *req,
 					 struct nix_mark_format_cfg_rsp *rsp);
+int rvu_mbox_handler_nix_set_rx_cfg(struct rvu *rvu, struct nix_rx_cfg *req,
+				    struct msg_rsp *rsp);
+
 
 /* NPC APIs */
 int rvu_npc_init(struct rvu *rvu);

drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c

@@ -2504,6 +2504,48 @@ int rvu_mbox_handler_nix_rxvlan_alloc(struct rvu *rvu, struct msg_req *req,
 	return err;
 }
 
+int rvu_mbox_handler_nix_set_rx_cfg(struct rvu *rvu, struct nix_rx_cfg *req,
+				    struct msg_rsp *rsp)
+{
+	struct rvu_hwinfo *hw = rvu->hw;
+	u16 pcifunc = req->hdr.pcifunc;
+	struct rvu_block *block;
+	struct rvu_pfvf *pfvf;
+	int nixlf, blkaddr;
+	u64 cfg;
+
+	pfvf = rvu_get_pfvf(rvu, pcifunc);
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
+	if (!pfvf->nixlf || blkaddr < 0)
+		return NIX_AF_ERR_AF_LF_INVALID;
+
+	block = &hw->block[blkaddr];
+	nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
+	if (nixlf < 0)
+		return NIX_AF_ERR_AF_LF_INVALID;
+
+	cfg = rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf));
+	/* Set the interface configuration */
+	if (req->len_verify & BIT(0))
+		cfg |= BIT_ULL(41);
+	else
+		cfg &= ~BIT_ULL(41);
+
+	if (req->len_verify & BIT(1))
+		cfg |= BIT_ULL(40);
+	else
+		cfg &= ~BIT_ULL(40);
+
+	if (req->csum_verify & BIT(0))
+		cfg |= BIT_ULL(37);
+	else
+		cfg &= ~BIT_ULL(37);
+
+	rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf), cfg);
+
+	return 0;
+}
+
 static void nix_link_config(struct rvu *rvu, int blkaddr)
 {
 	struct rvu_hwinfo *hw = rvu->hw;