nfp: add metadata to each flow offload

Adds metadata describing the mask id of each flow and keeps track of
flows installed in hardware. Previously a flow could not be removed
from hardware as there was no way of knowing if that a specific flow
was installed. This is solved by storing the offloaded flows in a
hash table.

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 10 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c
index 7bf994ceb9c1..5fe6d3582597 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
@@ -34,6 +34,7 @@
 #include <linux/etherdevice.h>
 #include <linux/pci.h>
 #include <linux/skbuff.h>
+#include <linux/vmalloc.h>
 #include <net/devlink.h>
 #include <net/dst_metadata.h>
 
@@ -50,14 +51,6 @@
 
 #define NFP_FLOWER_ALLOWED_VER 0x0001000000010000UL
 
-/**
- * struct nfp_flower_priv - Flower APP per-vNIC priv data
- * @nn:		     Pointer to vNIC
- */
-struct nfp_flower_priv {
-	struct nfp_net *nn;
-};
-
 static const char *nfp_flower_extra_cap(struct nfp_app *app, struct nfp_net *nn)
 {
 	return "FLOWER";
@@ -347,16 +340,24 @@ static int nfp_flower_init(struct nfp_app *app)
 		return -EINVAL;
 	}
 
-	app->priv = kzalloc(sizeof(struct nfp_flower_priv), GFP_KERNEL);
+	app->priv = vzalloc(sizeof(struct nfp_flower_priv));
 	if (!app->priv)
 		return -ENOMEM;
 
+	err = nfp_flower_metadata_init(app);
+	if (err)
+		goto err_free_app_priv;
+
 	return 0;
+
+err_free_app_priv:
+	vfree(app->priv);
+	return err;
 }
 
 static void nfp_flower_clean(struct nfp_app *app)
 {
-	kfree(app->priv);
+	vfree(app->priv);
 	app->priv = NULL;
 }