diff options
Diffstat (limited to 'drivers/net/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 61 |
1 files changed, 28 insertions, 33 deletions
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index d68331c7fb5d..2e6fd89f2a72 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -85,9 +85,13 @@ do {if (net_ratelimit()) EFX_LOG(efx, fmt, ##args); } while (0) #define EFX_MAX_CHANNELS 32 #define EFX_MAX_RX_QUEUES EFX_MAX_CHANNELS -#define EFX_TX_QUEUE_OFFLOAD_CSUM 0 -#define EFX_TX_QUEUE_NO_CSUM 1 -#define EFX_TX_QUEUE_COUNT 2 +/* Checksum generation is a per-queue option in hardware, so each + * queue visible to the networking core is backed by two hardware TX + * queues. */ +#define EFX_MAX_CORE_TX_QUEUES EFX_MAX_CHANNELS +#define EFX_TXQ_TYPE_OFFLOAD 1 +#define EFX_TXQ_TYPES 2 +#define EFX_MAX_TX_QUEUES (EFX_TXQ_TYPES * EFX_MAX_CORE_TX_QUEUES) /** * struct efx_special_buffer - An Efx special buffer @@ -187,7 +191,7 @@ struct efx_tx_buffer { struct efx_tx_queue { /* Members which don't change on the fast path */ struct efx_nic *efx ____cacheline_aligned_in_smp; - int queue; + unsigned queue; struct efx_channel *channel; struct efx_nic *nic; struct efx_tx_buffer *buffer; @@ -306,11 +310,6 @@ struct efx_buffer { }; -/* Flags for channel->used_flags */ -#define EFX_USED_BY_RX 1 -#define EFX_USED_BY_TX 2 -#define EFX_USED_BY_RX_TX (EFX_USED_BY_RX | EFX_USED_BY_TX) - enum efx_rx_alloc_method { RX_ALLOC_METHOD_AUTO = 0, RX_ALLOC_METHOD_SKB = 1, @@ -327,7 +326,6 @@ enum efx_rx_alloc_method { * @efx: Associated Efx NIC * @channel: Channel instance number * @name: Name for channel and IRQ - * @used_flags: Channel is used by net driver * @enabled: Channel enabled indicator * @irq: IRQ number (MSI and MSI-X only) * @irq_moderation: IRQ moderation value (in hardware ticks) @@ -352,12 +350,14 @@ enum efx_rx_alloc_method { * @n_rx_frm_trunc: Count of RX_FRM_TRUNC errors * @n_rx_overlength: Count of RX_OVERLENGTH errors * @n_skbuff_leaks: Count of skbuffs leaked due to RX overrun + * @tx_queue: Pointer to first TX queue, or %NULL if not used for TX + * @tx_stop_count: Core TX queue stop count + * @tx_stop_lock: Core TX queue stop lock */ struct efx_channel { struct efx_nic *efx; int channel; char name[IFNAMSIZ + 6]; - int used_flags; bool enabled; int irq; unsigned int irq_moderation; @@ -389,6 +389,9 @@ struct efx_channel { struct efx_rx_buffer *rx_pkt; bool rx_pkt_csummed; + struct efx_tx_queue *tx_queue; + atomic_t tx_stop_count; + spinlock_t tx_stop_lock; }; enum efx_led_mode { @@ -661,8 +664,9 @@ union efx_multicast_hash { * @rx_queue: RX DMA queues * @channel: Channels * @next_buffer_table: First available buffer table id - * @n_rx_queues: Number of RX queues * @n_channels: Number of channels in use + * @n_rx_channels: Number of channels used for RX (= number of RX queues) + * @n_tx_channels: Number of channels used for TX * @rx_buffer_len: RX buffer length * @rx_buffer_order: Order (log2) of number of pages for each RX buffer * @int_error_count: Number of internal errors seen recently @@ -693,8 +697,6 @@ union efx_multicast_hash { * @port_initialized: Port initialized? * @net_dev: Operating system network device. Consider holding the rtnl lock * @rx_checksum_enabled: RX checksumming enabled - * @netif_stop_count: Port stop count - * @netif_stop_lock: Port stop lock * @mac_stats: MAC statistics. These include all statistics the MACs * can provide. Generic code converts these into a standard * &struct net_device_stats. @@ -742,13 +744,14 @@ struct efx_nic { enum nic_state state; enum reset_type reset_pending; - struct efx_tx_queue tx_queue[EFX_TX_QUEUE_COUNT]; + struct efx_tx_queue tx_queue[EFX_MAX_TX_QUEUES]; struct efx_rx_queue rx_queue[EFX_MAX_RX_QUEUES]; struct efx_channel channel[EFX_MAX_CHANNELS]; unsigned next_buffer_table; - int n_rx_queues; - int n_channels; + unsigned n_channels; + unsigned n_rx_channels; + unsigned n_tx_channels; unsigned int rx_buffer_len; unsigned int rx_buffer_order; @@ -780,9 +783,6 @@ struct efx_nic { struct net_device *net_dev; bool rx_checksum_enabled; - atomic_t netif_stop_count; - spinlock_t netif_stop_lock; - struct efx_mac_stats mac_stats; struct efx_buffer stats_buffer; spinlock_t stats_lock; @@ -928,31 +928,26 @@ struct efx_nic_type { /* Iterate over all used channels */ #define efx_for_each_channel(_channel, _efx) \ for (_channel = &((_efx)->channel[0]); \ - _channel < &((_efx)->channel[EFX_MAX_CHANNELS]); \ - _channel++) \ - if (!_channel->used_flags) \ - continue; \ - else + _channel < &((_efx)->channel[(efx)->n_channels]); \ + _channel++) /* Iterate over all used TX queues */ #define efx_for_each_tx_queue(_tx_queue, _efx) \ for (_tx_queue = &((_efx)->tx_queue[0]); \ - _tx_queue < &((_efx)->tx_queue[EFX_TX_QUEUE_COUNT]); \ + _tx_queue < &((_efx)->tx_queue[EFX_TXQ_TYPES * \ + (_efx)->n_tx_channels]); \ _tx_queue++) /* Iterate over all TX queues belonging to a channel */ #define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ - for (_tx_queue = &((_channel)->efx->tx_queue[0]); \ - _tx_queue < &((_channel)->efx->tx_queue[EFX_TX_QUEUE_COUNT]); \ - _tx_queue++) \ - if (_tx_queue->channel != (_channel)) \ - continue; \ - else + for (_tx_queue = (_channel)->tx_queue; \ + _tx_queue && _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES; \ + _tx_queue++) /* Iterate over all used RX queues */ #define efx_for_each_rx_queue(_rx_queue, _efx) \ for (_rx_queue = &((_efx)->rx_queue[0]); \ - _rx_queue < &((_efx)->rx_queue[(_efx)->n_rx_queues]); \ + _rx_queue < &((_efx)->rx_queue[(_efx)->n_rx_channels]); \ _rx_queue++) /* Iterate over all RX queues belonging to a channel */ |