diff options
author | Yevhen Orlov | 2022-01-11 03:10:14 +0200 |
---|---|---|
committer | Jakub Kicinski | 2022-01-12 10:16:55 -0800 |
commit | 6a1ba8758f67e37a48fd2f940032a2b186bcf021 (patch) | |
tree | 4c5bc032483dc112791189c2981243f1c8f720f3 /drivers | |
parent | 9c0c2c7aa23cbf78277557cfe8ec8bb7689225fe (diff) |
net: marvell: prestera: Refactor get/put VR functions
* Use refcount, instead of uint
* Increment/decrement recount inside get/put
* Fix error path in __prestera_vr_create. Remove unnecessary kfree.
* Make __prestera_vr_destroy symmetric to "create"
Fixes: bca5859bc6c6 ("net: marvell: prestera: add hardware router objects accounting")
Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu>
Link: https://lore.kernel.org/r/20220111011014.4418-1-yevhen.orlov@plvision.eu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/marvell/prestera/prestera_router_hw.c | 32 | ||||
-rw-r--r-- | drivers/net/ethernet/marvell/prestera/prestera_router_hw.h | 2 |
2 files changed, 17 insertions, 17 deletions
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c index 5866a4be50f5..d5befd1d1440 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.c @@ -47,13 +47,8 @@ static struct prestera_vr *__prestera_vr_create(struct prestera_switch *sw, struct netlink_ext_ack *extack) { struct prestera_vr *vr; - u16 hw_vr_id; int err; - err = prestera_hw_vr_create(sw, &hw_vr_id); - if (err) - return ERR_PTR(-ENOMEM); - vr = kzalloc(sizeof(*vr), GFP_KERNEL); if (!vr) { err = -ENOMEM; @@ -61,23 +56,26 @@ static struct prestera_vr *__prestera_vr_create(struct prestera_switch *sw, } vr->tb_id = tb_id; - vr->hw_vr_id = hw_vr_id; + + err = prestera_hw_vr_create(sw, &vr->hw_vr_id); + if (err) + goto err_hw_create; list_add(&vr->router_node, &sw->router->vr_list); return vr; -err_alloc_vr: - prestera_hw_vr_delete(sw, hw_vr_id); +err_hw_create: kfree(vr); +err_alloc_vr: return ERR_PTR(err); } static void __prestera_vr_destroy(struct prestera_switch *sw, struct prestera_vr *vr) { - prestera_hw_vr_delete(sw, vr->hw_vr_id); list_del(&vr->router_node); + prestera_hw_vr_delete(sw, vr->hw_vr_id); kfree(vr); } @@ -87,17 +85,22 @@ static struct prestera_vr *prestera_vr_get(struct prestera_switch *sw, u32 tb_id struct prestera_vr *vr; vr = __prestera_vr_find(sw, tb_id); - if (!vr) + if (vr) { + refcount_inc(&vr->refcount); + } else { vr = __prestera_vr_create(sw, tb_id, extack); - if (IS_ERR(vr)) - return ERR_CAST(vr); + if (IS_ERR(vr)) + return ERR_CAST(vr); + + refcount_set(&vr->refcount, 1); + } return vr; } static void prestera_vr_put(struct prestera_switch *sw, struct prestera_vr *vr) { - if (!vr->ref_cnt) + if (refcount_dec_and_test(&vr->refcount)) __prestera_vr_destroy(sw, vr); } @@ -158,7 +161,6 @@ void prestera_rif_entry_destroy(struct prestera_switch *sw, iface.vr_id = e->vr->hw_vr_id; prestera_hw_rif_delete(sw, e->hw_id, &iface); - e->vr->ref_cnt--; prestera_vr_put(sw, e->vr); kfree(e); } @@ -183,7 +185,6 @@ prestera_rif_entry_create(struct prestera_switch *sw, if (IS_ERR(e->vr)) goto err_vr_get; - e->vr->ref_cnt++; memcpy(&e->addr, addr, sizeof(e->addr)); /* HW */ @@ -198,7 +199,6 @@ prestera_rif_entry_create(struct prestera_switch *sw, return e; err_hw_create: - e->vr->ref_cnt--; prestera_vr_put(sw, e->vr); err_vr_get: err_key_copy: diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.h b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.h index fed53595f7bb..ab5e013ac3ad 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_router_hw.h +++ b/drivers/net/ethernet/marvell/prestera/prestera_router_hw.h @@ -6,7 +6,7 @@ struct prestera_vr { struct list_head router_node; - unsigned int ref_cnt; + refcount_t refcount; u32 tb_id; /* key (kernel fib table id) */ u16 hw_vr_id; /* virtual router ID */ u8 __pad[2]; |