From 51ccc37d9d3392884024b272089fd3e864d3cf3c Mon Sep 17 00:00:00 2001 From: Dirk van der Merwe Date: Sat, 4 Nov 2017 16:48:56 +0100 Subject: [PATCH] nfp: refactor nfp_app_reprs_set The criteria that reprs cannot be replaced with another new set of reprs has been removed. This check is not needed since the only use case that could exercise this at the moment, would be to modify the number of SRIOV VFs without first disabling them. This case is explicitly disallowed in any case and subsequent patches in this series need to be able to replace the running set of reprs. All cases where the return code used to be checked for the nfp_app_reprs_set function have been removed. As stated above, it is not possible for the current code to encounter a case where reprs exist and need to be replaced. Signed-off-by: Dirk van der Merwe Signed-off-by: Simon Horman Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/flower/main.c | 16 ++++------------ drivers/net/ethernet/netronome/nfp/nfp_app.c | 6 ------ 2 files changed, 4 insertions(+), 18 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c index e46e7c60d491..e0283bb24f06 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/main.c +++ b/drivers/net/ethernet/netronome/nfp/flower/main.c @@ -142,8 +142,8 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app, { u8 nfp_pcie = nfp_cppcore_pcie_unit(app->pf->cpp); struct nfp_flower_priv *priv = app->priv; - struct nfp_reprs *reprs, *old_reprs; enum nfp_port_type port_type; + struct nfp_reprs *reprs; const u8 queue = 0; int i, err; @@ -194,11 +194,7 @@ nfp_flower_spawn_vnic_reprs(struct nfp_app *app, reprs->reprs[i]->name); } - old_reprs = nfp_app_reprs_set(app, repr_type, reprs); - if (IS_ERR(old_reprs)) { - err = PTR_ERR(old_reprs); - goto err_reprs_clean; - } + nfp_app_reprs_set(app, repr_type, reprs); return 0; err_reprs_clean: @@ -222,8 +218,8 @@ static int nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv) { struct nfp_eth_table *eth_tbl = app->pf->eth_tbl; - struct nfp_reprs *reprs, *old_reprs; struct sk_buff *ctrl_skb; + struct nfp_reprs *reprs; unsigned int i; int err; @@ -280,11 +276,7 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv) phys_port, reprs->reprs[phys_port]->name); } - old_reprs = nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, reprs); - if (IS_ERR(old_reprs)) { - err = PTR_ERR(old_reprs); - goto err_reprs_clean; - } + nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, reprs); /* The MAC_REPR control message should be sent after the MAC * representors are registered using nfp_app_reprs_set(). This is diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.c b/drivers/net/ethernet/netronome/nfp/nfp_app.c index 3644d74fe304..955a9f44d244 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_app.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_app.c @@ -106,14 +106,8 @@ nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type, old = rcu_dereference_protected(app->reprs[type], lockdep_is_held(&app->pf->lock)); - if (reprs && old) { - old = ERR_PTR(-EBUSY); - goto exit_unlock; - } - rcu_assign_pointer(app->reprs[type], reprs); -exit_unlock: return old; }