diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/efx.c')
-rw-r--r-- | drivers/net/ethernet/sfc/efx.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index f358709fab67..033907e6fdb0 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -1472,6 +1472,12 @@ static int efx_allocate_msix_channels(struct efx_nic *efx, n_xdp_tx = num_possible_cpus(); n_xdp_ev = DIV_ROUND_UP(n_xdp_tx, EFX_TXQ_TYPES); + vec_count = pci_msix_vec_count(efx->pci_dev); + if (vec_count < 0) + return vec_count; + + max_channels = min_t(unsigned int, vec_count, max_channels); + /* Check resources. * We need a channel per event queue, plus a VI per tx queue. * This may be more pessimistic than it needs to be. @@ -1493,11 +1499,6 @@ static int efx_allocate_msix_channels(struct efx_nic *efx, n_xdp_tx, n_xdp_ev); } - n_channels = min(n_channels, max_channels); - - vec_count = pci_msix_vec_count(efx->pci_dev); - if (vec_count < 0) - return vec_count; if (vec_count < n_channels) { netif_err(efx, drv, efx->net_dev, "WARNING: Insufficient MSI-X vectors available (%d < %u).\n", @@ -1507,11 +1508,9 @@ static int efx_allocate_msix_channels(struct efx_nic *efx, n_channels = vec_count; } - efx->n_channels = n_channels; + n_channels = min(n_channels, max_channels); - /* Do not create the PTP TX queue(s) if PTP uses the MC directly. */ - if (extra_channels && !efx_ptp_use_mac_tx_timestamps(efx)) - n_channels--; + efx->n_channels = n_channels; /* Ignore XDP tx channels when creating rx channels. */ n_channels -= efx->n_xdp_channels; @@ -1531,11 +1530,10 @@ static int efx_allocate_msix_channels(struct efx_nic *efx, efx->n_rx_channels = n_channels; } - if (efx->n_xdp_channels) - efx->xdp_channel_offset = efx->tx_channel_offset + - efx->n_tx_channels; - else - efx->xdp_channel_offset = efx->n_channels; + efx->n_rx_channels = min(efx->n_rx_channels, parallelism); + efx->n_tx_channels = min(efx->n_tx_channels, parallelism); + + efx->xdp_channel_offset = n_channels; netif_dbg(efx, drv, efx->net_dev, "Allocating %u RX channels\n", @@ -1550,6 +1548,7 @@ static int efx_allocate_msix_channels(struct efx_nic *efx, static int efx_probe_interrupts(struct efx_nic *efx) { unsigned int extra_channels = 0; + unsigned int rss_spread; unsigned int i, j; int rc; @@ -1631,8 +1630,7 @@ static int efx_probe_interrupts(struct efx_nic *efx) for (i = 0; i < EFX_MAX_EXTRA_CHANNELS; i++) { if (!efx->extra_channel_type[i]) continue; - if (efx->interrupt_mode != EFX_INT_MODE_MSIX || - efx->n_channels <= extra_channels) { + if (j <= efx->tx_channel_offset + efx->n_tx_channels) { efx->extra_channel_type[i]->handle_no_channel(efx); } else { --j; @@ -1643,16 +1641,17 @@ static int efx_probe_interrupts(struct efx_nic *efx) } } + rss_spread = efx->n_rx_channels; /* RSS might be usable on VFs even if it is disabled on the PF */ #ifdef CONFIG_SFC_SRIOV if (efx->type->sriov_wanted) { - efx->rss_spread = ((efx->n_rx_channels > 1 || + efx->rss_spread = ((rss_spread > 1 || !efx->type->sriov_wanted(efx)) ? - efx->n_rx_channels : efx_vf_size(efx)); + rss_spread : efx_vf_size(efx)); return 0; } #endif - efx->rss_spread = efx->n_rx_channels; + efx->rss_spread = rss_spread; return 0; } |