[PATCH bpf-next v3 08/11] nfp: bpf: plumb extack into functions related to XDP offload

[Jakub Kicinski]

From: Quentin Monnet <quentin.mon...@netronome.com>

Pass a pointer to an extack object to nfp_app_xdp_offload() in order to
prepare for extack usage in the nfp driver. Next step will be to forward
this extack pointer to nfp_net_bpf_offload(), once this function is able
to use it for printing error messages.

Signed-off-by: Quentin Monnet <quentin.mon...@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 drivers/net/ethernet/netronome/nfp/bpf/main.c       | 4 ++--
 drivers/net/ethernet/netronome/nfp/nfp_app.h        | 9 ++++++---
 drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 2 +-
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.c 
b/drivers/net/ethernet/netronome/nfp/bpf/main.c
index 8823c8360047..e8816ab8fb63 100644
--- a/drivers/net/ethernet/netronome/nfp/bpf/main.c
+++ b/drivers/net/ethernet/netronome/nfp/bpf/main.c
@@ -54,7 +54,7 @@ static bool nfp_net_ebpf_capable(struct nfp_net *nn)
 
 static int
 nfp_bpf_xdp_offload(struct nfp_app *app, struct nfp_net *nn,
-                   struct bpf_prog *prog)
+                   struct bpf_prog *prog, struct netlink_ext_ack *extack)
 {
        bool running, xdp_running;
        int ret;
@@ -73,7 +73,7 @@ nfp_bpf_xdp_offload(struct nfp_app *app, struct nfp_net *nn,
        ret = nfp_net_bpf_offload(nn, prog, running);
        /* Stop offload if replace not possible */
        if (ret && prog)
-               nfp_bpf_xdp_offload(app, nn, NULL);
+               nfp_bpf_xdp_offload(app, nn, NULL, extack);
 
        nn->dp.bpf_offload_xdp = prog && !ret;
        return ret;
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.h 
b/drivers/net/ethernet/netronome/nfp/nfp_app.h
index 6a6eb02b516e..1229a34f8da5 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_app.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_app.h
@@ -43,6 +43,7 @@
 struct bpf_prog;
 struct net_device;
 struct netdev_bpf;
+struct netlink_ext_ack;
 struct pci_dev;
 struct sk_buff;
 struct sk_buff;
@@ -134,7 +135,8 @@ struct nfp_app_type {
        int (*bpf)(struct nfp_app *app, struct nfp_net *nn,
                   struct netdev_bpf *xdp);
        int (*xdp_offload)(struct nfp_app *app, struct nfp_net *nn,
-                          struct bpf_prog *prog);
+                          struct bpf_prog *prog,
+                          struct netlink_ext_ack *extack);
 
        int (*sriov_enable)(struct nfp_app *app, int num_vfs);
        void (*sriov_disable)(struct nfp_app *app);
@@ -320,11 +322,12 @@ static inline int nfp_app_bpf(struct nfp_app *app, struct 
nfp_net *nn,
 }
 
 static inline int nfp_app_xdp_offload(struct nfp_app *app, struct nfp_net *nn,
-                                     struct bpf_prog *prog)
+                                     struct bpf_prog *prog,
+                                     struct netlink_ext_ack *extack)
 {
        if (!app || !app->type->xdp_offload)
                return -EOPNOTSUPP;
-       return app->type->xdp_offload(app, nn, prog);
+       return app->type->xdp_offload(app, nn, prog, extack);
 }
 
 static inline bool __nfp_app_ctrl_tx(struct nfp_app *app, struct sk_buff *skb)
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c 
b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 2b5cad3069a7..14f23e8d27fa 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -3395,7 +3395,7 @@ nfp_net_xdp_setup(struct nfp_net *nn, struct bpf_prog 
*prog, u32 flags,
        if (err)
                return err;
 
-       err = nfp_app_xdp_offload(nn->app, nn, offload_prog);
+       err = nfp_app_xdp_offload(nn->app, nn, offload_prog, extack);
        if (err && flags & XDP_FLAGS_HW_MODE)
                return err;
 
-- 
2.15.1