netdev - [PATCH net-next 4/8] nfp: reorganize the app table

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Date:   Thu,  2 Nov 2017 01:31:32 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     netdev@...r.kernel.org
Cc:     oss-drivers@...ronome.com,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next 4/8] nfp: reorganize the app table

The app table is an unordered array right now.  We have to search
apps by ID.  It also makes it harder to fall back to core NIC if
advanced functions are not compiled into the kernel (e.g. eBPF).
Make the table keyed by app id.

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
Reviewed-by: Simon Horman <simon.horman@...ronome.com>
---
 drivers/net/ethernet/netronome/nfp/nfp_app.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.c b/drivers/net/ethernet/netronome/nfp/nfp_app.c
index 5d9e2eba5b49..085c5151c601 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_app.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_app.c
@@ -43,10 +43,10 @@
 #include "nfp_net_repr.h"
 
 static const struct nfp_app_type *apps[] = {
-	&app_nic,
-	&app_bpf,
+	[NFP_APP_CORE_NIC]	= &app_nic,
+	[NFP_APP_BPF_NIC]	= &app_bpf,
 #ifdef CONFIG_NFP_APP_FLOWER
-	&app_flower,
+	[NFP_APP_FLOWER_NIC]	= &app_flower,
 #endif
 };
 
@@ -116,17 +116,13 @@ nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type,
 struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id)
 {
 	struct nfp_app *app;
-	unsigned int i;
 
-	for (i = 0; i < ARRAY_SIZE(apps); i++)
-		if (apps[i]->id == id)
-			break;
-	if (i == ARRAY_SIZE(apps)) {
+	if (id >= ARRAY_SIZE(apps) || !apps[id]) {
 		nfp_err(pf->cpp, "failed to find app with ID 0x%02hhx\n", id);
 		return ERR_PTR(-EINVAL);
 	}
 
-	if (WARN_ON(!apps[i]->name || !apps[i]->vnic_alloc))
+	if (WARN_ON(!apps[id]->name || !apps[id]->vnic_alloc))
 		return ERR_PTR(-EINVAL);
 
 	app = kzalloc(sizeof(*app), GFP_KERNEL);
@@ -136,7 +132,7 @@ struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id)
 	app->pf = pf;
 	app->cpp = pf->cpp;
 	app->pdev = pf->pdev;
-	app->type = apps[i];
+	app->type = apps[id];
 
 	return app;
 }
-- 
2.14.1