static int bnxt_req_msix_vecs(struct bnxt_en_dev *edev, int ulp_id,
struct bnxt_msix_entry *ent, int num_msix)
{
struct net_device *dev = edev->net;
struct bnxt *bp = netdev_priv(dev);
int max_idx, max_cp_rings;
int avail_msix, idx;
int rc = 0;
ASSERT_RTNL();
if (ulp_id != BNXT_ROCE_ULP)
return -EINVAL;
if (!(bp->flags & BNXT_FLAG_USING_MSIX))
return -ENODEV;
if (edev->ulp_tbl[ulp_id].msix_requested)
return -EAGAIN;
max_cp_rings = bnxt_get_max_func_cp_rings(bp);
avail_msix = bnxt_get_avail_msix(bp, num_msix);
if (!avail_msix)
return -ENOMEM;
if (avail_msix > num_msix)
avail_msix = num_msix;
if (BNXT_NEW_RM(bp)) {
idx = bp->cp_nr_rings;
} else {
max_idx = min_t(int, bp->total_irqs, max_cp_rings);
idx = max_idx - avail_msix;
}
edev->ulp_tbl[ulp_id].msix_base = idx;
edev->ulp_tbl[ulp_id].msix_requested = avail_msix;
if (bp->total_irqs < (idx + avail_msix)) {
if (netif_running(dev)) {
bnxt_close_nic(bp, true, false);
rc = bnxt_open_nic(bp, true, false);
} else {
rc = bnxt_reserve_rings(bp);
}
}
if (rc) {
edev->ulp_tbl[ulp_id].msix_requested = 0;
return -EAGAIN;
}
if (BNXT_NEW_RM(bp)) {
struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
avail_msix = hw_resc->resv_cp_rings - bp->cp_nr_rings;
edev->ulp_tbl[ulp_id].msix_requested = avail_msix;
}
bnxt_fill_msix_vecs(bp, ent);
edev->flags |= BNXT_EN_FLAG_MSIX_REQUESTED;
return avail_msix;
}
static int bnxt_set_channels(struct net_device *dev,
struct ethtool_channels *channel)
{
struct bnxt *bp = netdev_priv(dev);
int max_rx_rings, max_tx_rings, tcs;
u32 rc = 0;
if (channel->other_count || channel->combined_count ||
!channel->rx_count || !channel->tx_count)
return -EINVAL;
bnxt_get_max_rings(bp, &max_rx_rings, &max_tx_rings);
tcs = netdev_get_num_tc(dev);
if (tcs > 1)
max_tx_rings /= tcs;
if (channel->rx_count > max_rx_rings ||
channel->tx_count > max_tx_rings)
return -EINVAL;
if (netif_running(dev)) {
if (BNXT_PF(bp)) {
/* TODO CHIMP_FW: Send message to all VF's
* before PF unload
*/
}
rc = bnxt_close_nic(bp, true, false);
if (rc) {
netdev_err(bp->dev, "Set channel failure rc :%x\n",
rc);
return rc;
}
}
bp->rx_nr_rings = channel->rx_count;
bp->tx_nr_rings_per_tc = channel->tx_count;
bp->tx_nr_rings = bp->tx_nr_rings_per_tc;
if (tcs > 1)
bp->tx_nr_rings = bp->tx_nr_rings_per_tc * tcs;
bp->cp_nr_rings = max_t(int, bp->tx_nr_rings, bp->rx_nr_rings);
bp->num_stat_ctxs = bp->cp_nr_rings;
if (netif_running(dev)) {
rc = bnxt_open_nic(bp, true, false);
if ((!rc) && BNXT_PF(bp)) {
/* TODO CHIMP_FW: Send message to all VF's
* to renable
*/
}
}
return rc;
}
static int bnxt_free_msix_vecs(struct bnxt_en_dev *edev, int ulp_id)
{
struct net_device *dev = edev->net;
struct bnxt *bp = netdev_priv(dev);
ASSERT_RTNL();
if (ulp_id != BNXT_ROCE_ULP)
return -EINVAL;
if (!(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
return 0;
edev->ulp_tbl[ulp_id].msix_requested = 0;
edev->flags &= ~BNXT_EN_FLAG_MSIX_REQUESTED;
if (netif_running(dev)) {
bnxt_close_nic(bp, true, false);
bnxt_open_nic(bp, true, false);
}
return 0;
}
static int bnxt_set_ringparam(struct net_device *dev,
struct ethtool_ringparam *ering)
{
struct bnxt *bp = netdev_priv(dev);
if ((ering->rx_pending > BNXT_MAX_RX_DESC_CNT) ||
(ering->tx_pending > BNXT_MAX_TX_DESC_CNT) ||
(ering->tx_pending <= MAX_SKB_FRAGS))
return -EINVAL;
if (netif_running(dev))
bnxt_close_nic(bp, false, false);
bp->rx_ring_size = ering->rx_pending;
bp->tx_ring_size = ering->tx_pending;
bnxt_set_ring_params(bp);
if (netif_running(dev))
return bnxt_open_nic(bp, false, false);
return 0;
}
static int bnxt_set_channels(struct net_device *dev,
struct ethtool_channels *channel)
{
struct bnxt *bp = netdev_priv(dev);
int max_rx_rings, max_tx_rings, tcs;
u32 rc = 0;
bool sh = false;
if (channel->other_count)
return -EINVAL;
if (!channel->combined_count &&
(!channel->rx_count || !channel->tx_count))
return -EINVAL;
if (channel->combined_count &&
(channel->rx_count || channel->tx_count))
return -EINVAL;
if (channel->combined_count)
sh = true;
bnxt_get_max_rings(bp, &max_rx_rings, &max_tx_rings, sh);
tcs = netdev_get_num_tc(dev);
if (tcs > 1)
max_tx_rings /= tcs;
if (sh && (channel->combined_count > max_rx_rings ||
channel->combined_count > max_tx_rings))
return -ENOMEM;
if (!sh && (channel->rx_count > max_rx_rings ||
channel->tx_count > max_tx_rings))
return -ENOMEM;
if (netif_running(dev)) {
if (BNXT_PF(bp)) {
/* TODO CHIMP_FW: Send message to all VF's
* before PF unload
*/
}
rc = bnxt_close_nic(bp, true, false);
if (rc) {
netdev_err(bp->dev, "Set channel failure rc :%x\n",
rc);
return rc;
}
}
if (sh) {
bp->flags |= BNXT_FLAG_SHARED_RINGS;
bp->rx_nr_rings = channel->combined_count;
bp->tx_nr_rings_per_tc = channel->combined_count;
} else {
bp->flags &= ~BNXT_FLAG_SHARED_RINGS;
bp->rx_nr_rings = channel->rx_count;
bp->tx_nr_rings_per_tc = channel->tx_count;
}
bp->tx_nr_rings = bp->tx_nr_rings_per_tc;
if (tcs > 1)
bp->tx_nr_rings = bp->tx_nr_rings_per_tc * tcs;
bp->cp_nr_rings = sh ? max_t(int, bp->tx_nr_rings, bp->rx_nr_rings) :
bp->tx_nr_rings + bp->rx_nr_rings;
bp->num_stat_ctxs = bp->cp_nr_rings;
/* After changing number of rx channels, update NTUPLE feature. */
netdev_update_features(dev);
if (netif_running(dev)) {
rc = bnxt_open_nic(bp, true, false);
if ((!rc) && BNXT_PF(bp)) {
/* TODO CHIMP_FW: Send message to all VF's
* to renable
*/
}
}
return rc;
}
