octeontx2-pf: Add support for exact match table.

NPC exact match table can support more entries than RPM
dmac filters. This requires field size of DMAC filter count
and index to be increased.

Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 33 insertions, 11 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dmac_flt.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dmac_flt.c
index 142d87722bed..846a0294a215 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dmac_flt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dmac_flt.c
@@ -8,7 +8,7 @@
 #include "otx2_common.h"
 
 static int otx2_dmacflt_do_add(struct otx2_nic *pf, const u8 *mac,
-			       u8 *dmac_index)
+			       u32 *dmac_index)
 {
 	struct cgx_mac_addr_add_req *req;
 	struct cgx_mac_addr_add_rsp *rsp;
@@ -35,9 +35,10 @@ static int otx2_dmacflt_do_add(struct otx2_nic *pf, const u8 *mac,
 	return err;
 }
 
-static int otx2_dmacflt_add_pfmac(struct otx2_nic *pf)
+static int otx2_dmacflt_add_pfmac(struct otx2_nic *pf, u32 *dmac_index)
 {
 	struct cgx_mac_addr_set_or_get *req;
+	struct cgx_mac_addr_set_or_get *rsp;
 	int err;
 
 	mutex_lock(&pf->mbox.lock);
@@ -48,16 +49,24 @@ static int otx2_dmacflt_add_pfmac(struct otx2_nic *pf)
 		return -ENOMEM;
 	}
 
+	req->index = *dmac_index;
+
 	ether_addr_copy(req->mac_addr, pf->netdev->dev_addr);
 	err = otx2_sync_mbox_msg(&pf->mbox);
 
+	if (!err) {
+		rsp = (struct cgx_mac_addr_set_or_get *)
+			 otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &req->hdr);
+		*dmac_index = rsp->index;
+	}
+
 	mutex_unlock(&pf->mbox.lock);
 	return err;
 }
 
-int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u8 bit_pos)
+int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u32 bit_pos)
 {
-	u8 *dmacindex;
+	u32 *dmacindex;
 
 	/* Store dmacindex returned by CGX/RPM driver which will
 	 * be used for macaddr update/remove
@@ -65,13 +74,13 @@ int otx2_dmacflt_add(struct otx2_nic *pf, const u8 *mac, u8 bit_pos)
 	dmacindex = &pf->flow_cfg->bmap_to_dmacindex[bit_pos];
 
 	if (ether_addr_equal(mac, pf->netdev->dev_addr))
-		return otx2_dmacflt_add_pfmac(pf);
+		return otx2_dmacflt_add_pfmac(pf, dmacindex);
 	else
 		return otx2_dmacflt_do_add(pf, mac, dmacindex);
 }
 
 static int otx2_dmacflt_do_remove(struct otx2_nic *pfvf, const u8 *mac,
-				  u8 dmac_index)
+				  u32 dmac_index)
 {
 	struct cgx_mac_addr_del_req *req;
 	int err;
@@ -91,7 +100,7 @@ static int otx2_dmacflt_do_remove(struct otx2_nic *pfvf, const u8 *mac,
 	return err;
 }
 
-static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf)
+static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf, u32 dmac_index)
 {
 	struct cgx_mac_addr_reset_req *req;
 	int err;
@@ -102,6 +111,7 @@ static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf)
 		mutex_unlock(&pf->mbox.lock);
 		return -ENOMEM;
 	}
+	req->index = dmac_index;
 
 	err = otx2_sync_mbox_msg(&pf->mbox);
 
@@ -110,12 +120,12 @@ static int otx2_dmacflt_remove_pfmac(struct otx2_nic *pf)
 }
 
 int otx2_dmacflt_remove(struct otx2_nic *pf, const u8 *mac,
-			u8 bit_pos)
+			u32 bit_pos)
 {
-	u8 dmacindex = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
+	u32 dmacindex = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
 
 	if (ether_addr_equal(mac, pf->netdev->dev_addr))
-		return otx2_dmacflt_remove_pfmac(pf);
+		return otx2_dmacflt_remove_pfmac(pf, dmacindex);
 	else
 		return otx2_dmacflt_do_remove(pf, mac, dmacindex);
 }
@@ -151,9 +161,10 @@ out:
 	return err;
 }
 
-int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u8 bit_pos)
+int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u32 bit_pos)
 {
 	struct cgx_mac_addr_update_req *req;
+	struct cgx_mac_addr_update_rsp *rsp;
 	int rc;
 
 	mutex_lock(&pf->mbox.lock);
@@ -167,8 +178,19 @@ int otx2_dmacflt_update(struct otx2_nic *pf, u8 *mac, u8 bit_pos)
 
 	ether_addr_copy(req->mac_addr, mac);
 	req->index = pf->flow_cfg->bmap_to_dmacindex[bit_pos];
+
+	/* check the response and change index */
+
 	rc = otx2_sync_mbox_msg(&pf->mbox);
+	if (rc)
+		goto out;
 
+	rsp = (struct cgx_mac_addr_update_rsp *)
+		otx2_mbox_get_rsp(&pf->mbox.mbox, 0, &req->hdr);
+
+	pf->flow_cfg->bmap_to_dmacindex[bit_pos] = rsp->index;
+
+out:
 	mutex_unlock(&pf->mbox.lock);
 	return rc;
 }