void
nfp_reprs_clean_and_free_by_type(struct nfp_app *app, enum nfp_repr_type type)
{
struct net_device *netdev;
struct nfp_reprs *reprs;
int i;
reprs = rcu_dereference_protected(app->reprs[type],
lockdep_is_held(&app->pf->lock));
if (!reprs)
return;
/* Preclean must happen before we remove the reprs reference from the
* app below.
*/
for (i = 0; i < reprs->num_reprs; i++) {
netdev = nfp_repr_get_locked(app, reprs, i);
if (netdev)
nfp_app_repr_preclean(app, netdev);
}
reprs = nfp_app_reprs_set(app, type, NULL);
synchronize_rcu();
nfp_reprs_clean_and_free(app, reprs);
}
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;
atomic_t *replies = &priv->reify_replies;
struct nfp_flower_repr_priv *repr_priv;
struct nfp_repr *nfp_repr;
struct sk_buff *ctrl_skb;
struct nfp_reprs *reprs;
int err, reify_cnt;
unsigned int i;
ctrl_skb = nfp_flower_cmsg_mac_repr_start(app, eth_tbl->count);
if (!ctrl_skb)
return -ENOMEM;
reprs = nfp_reprs_alloc(eth_tbl->max_index + 1);
if (!reprs) {
err = -ENOMEM;
goto err_free_ctrl_skb;
}
for (i = 0; i < eth_tbl->count; i++) {
unsigned int phys_port = eth_tbl->ports[i].index;
struct net_device *repr;
struct nfp_port *port;
u32 cmsg_port_id;
repr = nfp_repr_alloc(app);
if (!repr) {
err = -ENOMEM;
goto err_reprs_clean;
}
repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
if (!repr_priv) {
err = -ENOMEM;
goto err_reprs_clean;
}
nfp_repr = netdev_priv(repr);
nfp_repr->app_priv = repr_priv;
port = nfp_port_alloc(app, NFP_PORT_PHYS_PORT, repr);
if (IS_ERR(port)) {
err = PTR_ERR(port);
nfp_repr_free(repr);
goto err_reprs_clean;
}
err = nfp_port_init_phy_port(app->pf, app, port, i);
if (err) {
nfp_port_free(port);
nfp_repr_free(repr);
goto err_reprs_clean;
}
SET_NETDEV_DEV(repr, &priv->nn->pdev->dev);
nfp_net_get_mac_addr(app->pf, repr, port);
cmsg_port_id = nfp_flower_cmsg_phys_port(phys_port);
err = nfp_repr_init(app, repr,
cmsg_port_id, port, priv->nn->dp.netdev);
if (err) {
nfp_port_free(port);
nfp_repr_free(repr);
goto err_reprs_clean;
}
nfp_flower_cmsg_mac_repr_add(ctrl_skb, i,
eth_tbl->ports[i].nbi,
eth_tbl->ports[i].base,
phys_port);
RCU_INIT_POINTER(reprs->reprs[phys_port], repr);
nfp_info(app->cpp, "Phys Port %d Representor(%s) created\n",
phys_port, repr->name);
}
nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, reprs);
/* The REIFY/MAC_REPR control messages should be sent after the MAC
* representors are registered using nfp_app_reprs_set(). This is
* because the firmware may respond with control messages for the
* MAC representors, f.e. to provide the driver with information
* about their state, and without registration the driver will drop
* any such messages.
*/
atomic_set(replies, 0);
reify_cnt = nfp_flower_reprs_reify(app, NFP_REPR_TYPE_PHYS_PORT, true);
if (reify_cnt < 0) {
err = reify_cnt;
nfp_warn(app->cpp, "Failed to notify firmware about repr creation\n");
goto err_reprs_remove;
}
err = nfp_flower_wait_repr_reify(app, replies, reify_cnt);
if (err)
goto err_reprs_remove;
nfp_ctrl_tx(app->ctrl, ctrl_skb);
return 0;
err_reprs_remove:
reprs = nfp_app_reprs_set(app, NFP_REPR_TYPE_PHYS_PORT, NULL);
err_reprs_clean:
nfp_reprs_clean_and_free(app, reprs);
err_free_ctrl_skb:
kfree_skb(ctrl_skb);
return err;
}
static int
nfp_flower_spawn_vnic_reprs(struct nfp_app *app,
enum nfp_flower_cmsg_port_vnic_type vnic_type,
enum nfp_repr_type repr_type, unsigned int cnt)
{
u8 nfp_pcie = nfp_cppcore_pcie_unit(app->pf->cpp);
struct nfp_flower_priv *priv = app->priv;
atomic_t *replies = &priv->reify_replies;
struct nfp_flower_repr_priv *repr_priv;
enum nfp_port_type port_type;
struct nfp_repr *nfp_repr;
struct nfp_reprs *reprs;
int i, err, reify_cnt;
const u8 queue = 0;
port_type = repr_type == NFP_REPR_TYPE_PF ? NFP_PORT_PF_PORT :
NFP_PORT_VF_PORT;
reprs = nfp_reprs_alloc(cnt);
if (!reprs)
return -ENOMEM;
for (i = 0; i < cnt; i++) {
struct net_device *repr;
struct nfp_port *port;
u32 port_id;
repr = nfp_repr_alloc(app);
if (!repr) {
err = -ENOMEM;
goto err_reprs_clean;
}
repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
if (!repr_priv) {
err = -ENOMEM;
goto err_reprs_clean;
}
nfp_repr = netdev_priv(repr);
nfp_repr->app_priv = repr_priv;
/* For now we only support 1 PF */
WARN_ON(repr_type == NFP_REPR_TYPE_PF && i);
port = nfp_port_alloc(app, port_type, repr);
if (IS_ERR(port)) {
err = PTR_ERR(port);
nfp_repr_free(repr);
goto err_reprs_clean;
}
if (repr_type == NFP_REPR_TYPE_PF) {
port->pf_id = i;
port->vnic = priv->nn->dp.ctrl_bar;
} else {
port->pf_id = 0;
port->vf_id = i;
port->vnic =
app->pf->vf_cfg_mem + i * NFP_NET_CFG_BAR_SZ;
}
eth_hw_addr_random(repr);
port_id = nfp_flower_cmsg_pcie_port(nfp_pcie, vnic_type,
i, queue);
err = nfp_repr_init(app, repr,
port_id, port, priv->nn->dp.netdev);
if (err) {
nfp_port_free(port);
nfp_repr_free(repr);
goto err_reprs_clean;
}
RCU_INIT_POINTER(reprs->reprs[i], repr);
nfp_info(app->cpp, "%s%d Representor(%s) created\n",
repr_type == NFP_REPR_TYPE_PF ? "PF" : "VF", i,
repr->name);
}
nfp_app_reprs_set(app, repr_type, reprs);
atomic_set(replies, 0);
reify_cnt = nfp_flower_reprs_reify(app, repr_type, true);
if (reify_cnt < 0) {
err = reify_cnt;
nfp_warn(app->cpp, "Failed to notify firmware about repr creation\n");
goto err_reprs_remove;
}
err = nfp_flower_wait_repr_reify(app, replies, reify_cnt);
if (err)
goto err_reprs_remove;
return 0;
err_reprs_remove:
reprs = nfp_app_reprs_set(app, repr_type, NULL);
err_reprs_clean:
nfp_reprs_clean_and_free(app, reprs);
return err;
}