diff options
| author | Íñigo Huguet <ihuguet@redhat.com> | 2022-05-27 11:05:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-05-29 14:12:53 +0300 |
| commit | c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2 (patch) | |
| tree | 867c175ff7def0b0928c68105300da5f05322f16 | |
| parent | 2e102b53f8a778f872dc137f4c7ac548705817aa (diff) | |
| download | linux-c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2.tar.xz | |
sfc: fix wrong tx channel offset with efx_separate_tx_channels
tx_channel_offset is calculated in efx_allocate_msix_channels, but it is
also calculated again in efx_set_channels because it was originally done
there, and when efx_allocate_msix_channels was introduced it was
forgotten to be removed from efx_set_channels.
Moreover, the old calculation is wrong when using
efx_separate_tx_channels because now we can have XDP channels after the
TX channels, so n_channels - n_tx_channels doesn't point to the first TX
channel.
Remove the old calculation from efx_set_channels, and add the
initialization of this variable if MSI or legacy interrupts are used,
next to the initialization of the rest of the related variables, where
it was missing.
Fixes: 3990a8fffbda ("sfc: allocate channels for XDP tx queues")
Reported-by: Tianhao Zhao <tizhao@redhat.com>
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/sfc/efx_channels.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/ethernet/sfc/efx_channels.c b/drivers/net/ethernet/sfc/efx_channels.c index f4919e7ee77b..032b8c0bd788 100644 --- a/drivers/net/ethernet/sfc/efx_channels.c +++ b/drivers/net/ethernet/sfc/efx_channels.c @@ -298,6 +298,7 @@ int efx_probe_interrupts(struct efx_nic *efx) efx->n_channels = 1; efx->n_rx_channels = 1; efx->n_tx_channels = 1; + efx->tx_channel_offset = 0; efx->n_xdp_channels = 0; efx->xdp_channel_offset = efx->n_channels; rc = pci_enable_msi(efx->pci_dev); @@ -318,6 +319,7 @@ int efx_probe_interrupts(struct efx_nic *efx) efx->n_channels = 1 + (efx_separate_tx_channels ? 1 : 0); efx->n_rx_channels = 1; efx->n_tx_channels = 1; + efx->tx_channel_offset = 1; efx->n_xdp_channels = 0; efx->xdp_channel_offset = efx->n_channels; efx->legacy_irq = efx->pci_dev->irq; @@ -954,10 +956,6 @@ int efx_set_channels(struct efx_nic *efx) struct efx_channel *channel; int rc; - efx->tx_channel_offset = - efx_separate_tx_channels ? - efx->n_channels - efx->n_tx_channels : 0; - if (efx->xdp_tx_queue_count) { EFX_WARN_ON_PARANOID(efx->xdp_tx_queues); |