From: John Hurley <john.hurley@netronome.com>
Date: Tue, 19 Dec 2017 17:58:27 +0100
Subject: nfp: flower: read extra feature support from fw
Patch-mainline: v4.16-rc1
Git-commit: 739973486f53a4c4145d41b21ec36fefb0983f68
References: bsc#1109837

Extract the _abi_flower_extra_features symbol from the fw which gives a 64
bit bitmap of new features (on top of the flower base support) that the fw
can offload. Store this bitmap in the priv data associated with each app.
If the symbol does not exist, set the bitmap to 0.

Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/netronome/nfp/flower/main.c |   10 +++++++++-
 drivers/net/ethernet/netronome/nfp/flower/main.h |    2 ++
 2 files changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
@@ -381,7 +381,7 @@ static int nfp_flower_init(struct nfp_ap
 {
 	const struct nfp_pf *pf = app->pf;
 	struct nfp_flower_priv *app_priv;
-	u64 version;
+	u64 version, features;
 	int err;
 
 	if (!pf->eth_tbl) {
@@ -424,6 +424,14 @@ static int nfp_flower_init(struct nfp_ap
 	if (err)
 		goto err_free_app_priv;
 
+	/* Extract the extra features supported by the firmware. */
+	features = nfp_rtsym_read_le(app->pf->rtbl,
+				     "_abi_flower_extra_features", &err);
+	if (err)
+		app_priv->flower_ext_feats = 0;
+	else
+		app_priv->flower_ext_feats = features;
+
 	return 0;
 
 err_free_app_priv:
--- a/drivers/net/ethernet/netronome/nfp/flower/main.h
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.h
@@ -77,6 +77,7 @@ struct nfp_fl_stats_id {
  * @nn:			Pointer to vNIC
  * @mask_id_seed:	Seed used for mask hash table
  * @flower_version:	HW version of flower
+ * @flower_ext_feats:	Bitmap of extra features the HW supports
  * @stats_ids:		List of free stats ids
  * @mask_ids:		List of free mask ids
  * @mask_table:		Hash table used to store masks
@@ -101,6 +102,7 @@ struct nfp_flower_priv {
 	struct nfp_net *nn;
 	u32 mask_id_seed;
 	u64 flower_version;
+	u64 flower_ext_feats;
 	struct nfp_fl_stats_id stats_ids;
 	struct nfp_fl_mask_id mask_ids;
 	DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS);