diff options
| author | Netanel Belgazal <netanel@amazon.com> | 2017-06-23 11:21:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-23 14:15:10 -0400 |
| commit | 06443684daede6ded1fab8f8729249436fb0cd8e (patch) | |
| tree | 6eaf3e369d014d4c12443c43f056174ebc8a6e67 /drivers/net/ethernet/amazon/ena/ena_netdev.h | |
| parent | ad974baef2a17a170fe837ad19f10dcab63e9470 (diff) | |
net: ena: allow the driver to work with small number of msix vectors
Current driver tries to allocate msix vectors as the number of the
negotiated io queues. (with another msix vector for management).
If pci_alloc_irq_vectors() fails, the driver aborts the probe
and the ENA network device is never brought up.
With this patch, the driver's logic will reduce the number of IO
queues to the number of allocated msix vectors (minus one for management)
instead of failing probe().
Signed-off-by: Netanel Belgazal <netanel@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_netdev.h')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h index 5edc3da96ce5..86b0f0dbae65 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.h +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h @@ -58,7 +58,10 @@ #define DEVICE_NAME "Elastic Network Adapter (ENA)" /* 1 for AENQ + ADMIN */ -#define ENA_MAX_MSIX_VEC(io_queues) (1 + (io_queues)) +#define ENA_ADMIN_MSIX_VEC 1 +#define ENA_MAX_MSIX_VEC(io_queues) (ENA_ADMIN_MSIX_VEC + (io_queues)) + +#define ENA_MIN_MSIX_VEC 2 #define ENA_REG_BAR 0 #define ENA_MEM_BAR 2 @@ -267,6 +270,7 @@ enum ena_flags_t { ENA_FLAG_DEVICE_RUNNING, ENA_FLAG_DEV_UP, ENA_FLAG_LINK_UP, + ENA_FLAG_MSIX_ENABLED, ENA_FLAG_TRIGGER_RESET }; |