Commit 6d4f8cba authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller

nfp: move refresh tracking into the port structure

Track whether physical port's state have changed since last refresh
inside the nfp_port structure instead of the vNIC structure.
Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3d4ed1e7
......@@ -543,7 +543,6 @@ struct nfp_net_dp {
* @reconfig_sync_present: Some thread is performing synchronous reconfig
* @reconfig_timer: Timer for async reading of reconfig results
* @link_up: Is the link up?
* @link_changed: Has link state changes since last port refresh?
* @link_status_lock: Protects @link_* and ensures atomicity with BAR reading
* @rx_coalesce_usecs: RX interrupt moderation usecs delay parameter
* @rx_coalesce_max_frames: RX interrupt moderation frame count parameter
......@@ -601,7 +600,6 @@ struct nfp_net {
u32 me_freq_mhz;
bool link_up;
bool link_changed;
spinlock_t link_status_lock;
spinlock_t reconfig_lock;
......@@ -842,8 +840,6 @@ struct nfp_net_dp *nfp_net_clone_dp(struct nfp_net *nn);
int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *new,
struct netlink_ext_ack *extack);
bool nfp_net_link_changed_read_clear(struct nfp_net *nn);
#ifdef CONFIG_NFP_DEBUG
void nfp_net_debugfs_create(void);
void nfp_net_debugfs_destroy(void);
......
......@@ -392,19 +392,6 @@ static irqreturn_t nfp_net_irq_rxtx(int irq, void *data)
return IRQ_HANDLED;
}
bool nfp_net_link_changed_read_clear(struct nfp_net *nn)
{
unsigned long flags;
bool ret;
spin_lock_irqsave(&nn->link_status_lock, flags);
ret = nn->link_changed;
nn->link_changed = false;
spin_unlock_irqrestore(&nn->link_status_lock, flags);
return ret;
}
/**
* nfp_net_read_link_status() - Reread link status from control BAR
* @nn: NFP Network structure
......@@ -424,7 +411,8 @@ static void nfp_net_read_link_status(struct nfp_net *nn)
goto out;
nn->link_up = link_up;
nn->link_changed = true;
if (nn->port)
set_bit(NFP_PORT_CHANGED, &nn->port->flags);
if (nn->link_up) {
netif_carrier_on(nn->dp.netdev);
......
......@@ -217,15 +217,11 @@ nfp_net_get_link_ksettings(struct net_device *netdev,
if (!netif_carrier_ok(netdev))
return 0;
if (!nfp_netdev_is_nfp_net(netdev))
return -EOPNOTSUPP;
nn = netdev_priv(netdev);
/* Use link speed from ETH table if available, otherwise try the BAR */
if (eth_port) {
int err;
if (nfp_net_link_changed_read_clear(nn)) {
if (test_bit(NFP_PORT_CHANGED, &port->flags)) {
err = nfp_net_refresh_eth_port(port);
if (err)
return err;
......@@ -237,6 +233,10 @@ nfp_net_get_link_ksettings(struct net_device *netdev,
return 0;
}
if (!nfp_netdev_is_nfp_net(netdev))
return -EOPNOTSUPP;
nn = netdev_priv(netdev);
sts = nn_readl(nn, NFP_NET_CFG_STS);
ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts);
......
......@@ -555,16 +555,19 @@ static void nfp_net_refresh_vnics(struct work_struct *work)
if (list_empty(&pf->vnics))
goto out;
/* Update state of all ports */
rtnl_lock();
list_for_each_entry(nn, &pf->vnics, vnic_list)
nfp_net_link_changed_read_clear(nn);
if (nn->port)
clear_bit(NFP_PORT_CHANGED, &nn->port->flags);
eth_table = nfp_eth_read_ports(pf->cpp);
if (!eth_table) {
rtnl_unlock();
nfp_err(pf->cpp, "Error refreshing port config!\n");
goto out;
}
rtnl_lock();
list_for_each_entry(nn, &pf->vnics, vnic_list) {
if (!__nfp_port_get_eth_port(nn->port))
continue;
......@@ -575,6 +578,7 @@ static void nfp_net_refresh_vnics(struct work_struct *work)
kfree(eth_table);
/* Shoot off the ports which became invalid */
list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list) {
if (!nn->port || nn->port->type != NFP_PORT_INVALID)
continue;
......@@ -604,6 +608,8 @@ int nfp_net_refresh_eth_port(struct nfp_port *port)
struct nfp_eth_table *eth_table;
int ret;
clear_bit(NFP_PORT_CHANGED, &port->flags);
eth_table = nfp_eth_read_ports(cpp);
if (!eth_table) {
nfp_err(cpp, "Error refreshing port state table!\n");
......
......@@ -50,10 +50,21 @@ enum nfp_port_type {
NFP_PORT_PHYS_PORT,
};
/**
* enum nfp_port_flags - port flags (can be type-specific)
* @NFP_PORT_CHANGED: port state has changed since last eth table refresh;
* for NFP_PORT_PHYS_PORT, never set otherwise; must hold
* rtnl_lock to clear
*/
enum nfp_port_flags {
NFP_PORT_CHANGED = 0,
};
/**
* struct nfp_port - structure representing NFP port
* @netdev: backpointer to associated netdev
* @type: what port type does the entity represent
* @flags: port flags
* @app: backpointer to the app structure
* @eth_id: for %NFP_PORT_PHYS_PORT port ID in NFP enumeration scheme
* @eth_port: for %NFP_PORT_PHYS_PORT translated ETH Table port entry
......@@ -62,6 +73,8 @@ struct nfp_port {
struct net_device *netdev;
enum nfp_port_type type;
unsigned long flags;
struct nfp_app *app;
unsigned int eth_id;
......
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