diff options
Diffstat (limited to 'drivers/net/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/sfc/net_driver.h | 117 |
1 files changed, 74 insertions, 43 deletions
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h index 64e7caa4bbb5..0a7e26d73b52 100644 --- a/drivers/net/sfc/net_driver.h +++ b/drivers/net/sfc/net_driver.h @@ -29,6 +29,7 @@ #include <linux/device.h> #include <linux/highmem.h> #include <linux/workqueue.h> +#include <linux/vmalloc.h> #include <linux/i2c.h> #include "enum.h" @@ -137,6 +138,7 @@ struct efx_tx_buffer { * @channel: The associated channel * @buffer: The software buffer ring * @txd: The hardware descriptor ring + * @ptr_mask: The size of the ring minus 1. * @flushed: Used when handling queue flushing * @read_count: Current read pointer. * This is the number of buffers that have been removed from both rings. @@ -170,6 +172,7 @@ struct efx_tx_queue { struct efx_nic *nic; struct efx_tx_buffer *buffer; struct efx_special_buffer txd; + unsigned int ptr_mask; enum efx_flush_state flushed; /* Members used mainly on the completion path */ @@ -225,10 +228,9 @@ struct efx_rx_page_state { /** * struct efx_rx_queue - An Efx RX queue * @efx: The associated Efx NIC - * @queue: DMA queue number - * @channel: The associated channel * @buffer: The software buffer ring * @rxd: The hardware descriptor ring + * @ptr_mask: The size of the ring minus 1. * @added_count: Number of buffers added to the receive queue. * @notified_count: Number of buffers given to NIC (<= @added_count). * @removed_count: Number of buffers removed from the receive queue. @@ -240,9 +242,6 @@ struct efx_rx_page_state { * @min_fill: RX descriptor minimum non-zero fill level. * This records the minimum fill level observed when a ring * refill was triggered. - * @min_overfill: RX descriptor minimum overflow fill level. - * This records the minimum fill level at which RX queue - * overflow was observed. It should never be set. * @alloc_page_count: RX allocation strategy counter. * @alloc_skb_count: RX allocation strategy counter. * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). @@ -250,10 +249,9 @@ struct efx_rx_page_state { */ struct efx_rx_queue { struct efx_nic *efx; - int queue; - struct efx_channel *channel; struct efx_rx_buffer *buffer; struct efx_special_buffer rxd; + unsigned int ptr_mask; int added_count; int notified_count; @@ -302,7 +300,6 @@ enum efx_rx_alloc_method { * * @efx: Associated Efx NIC * @channel: Channel instance number - * @name: Name for channel and IRQ * @enabled: Channel enabled indicator * @irq: IRQ number (MSI and MSI-X only) * @irq_moderation: IRQ moderation value (in hardware ticks) @@ -311,6 +308,7 @@ enum efx_rx_alloc_method { * @reset_work: Scheduled reset work thread * @work_pending: Is work pending via NAPI? * @eventq: Event queue buffer + * @eventq_mask: Event queue pointer mask * @eventq_read_ptr: Event queue read pointer * @last_eventq_read_ptr: Last event queue read pointer value. * @magic_count: Event queue test event count @@ -327,14 +325,14 @@ 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 + * @rx_queue: RX queue for this channel * @tx_stop_count: Core TX queue stop count * @tx_stop_lock: Core TX queue stop lock + * @tx_queue: TX queues for this channel */ struct efx_channel { struct efx_nic *efx; int channel; - char name[IFNAMSIZ + 6]; bool enabled; int irq; unsigned int irq_moderation; @@ -342,6 +340,7 @@ struct efx_channel { struct napi_struct napi_str; bool work_pending; struct efx_special_buffer eventq; + unsigned int eventq_mask; unsigned int eventq_read_ptr; unsigned int last_eventq_read_ptr; unsigned int magic_count; @@ -366,9 +365,12 @@ struct efx_channel { struct efx_rx_buffer *rx_pkt; bool rx_pkt_csummed; - struct efx_tx_queue *tx_queue; + struct efx_rx_queue rx_queue; + atomic_t tx_stop_count; spinlock_t tx_stop_lock; + + struct efx_tx_queue tx_queue[2]; }; enum efx_led_mode { @@ -385,11 +387,6 @@ extern const unsigned int efx_loopback_mode_max; #define LOOPBACK_MODE(efx) \ STRING_TABLE_LOOKUP((efx)->loopback_mode, efx_loopback_mode) -extern const char *efx_interrupt_mode_names[]; -extern const unsigned int efx_interrupt_mode_max; -#define INT_MODE(efx) \ - STRING_TABLE_LOOKUP(efx->interrupt_mode, efx_interrupt_mode) - extern const char *efx_reset_type_names[]; extern const unsigned int efx_reset_type_max; #define RESET_TYPE(type) \ @@ -404,8 +401,6 @@ enum efx_int_mode { }; #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI) -#define EFX_IS10G(efx) ((efx)->link_state.speed == 10000) - enum nic_state { STATE_INIT = 0, STATE_RUNNING = 1, @@ -618,6 +613,8 @@ union efx_multicast_hash { efx_oword_t oword[EFX_MCAST_HASH_ENTRIES / sizeof(efx_oword_t) / 8]; }; +struct efx_filter_state; + /** * struct efx_nic - an Efx NIC * @name: Device name (net device name or bus id before net device registered) @@ -641,6 +638,9 @@ union efx_multicast_hash { * @tx_queue: TX DMA queues * @rx_queue: RX DMA queues * @channel: Channels + * @channel_name: Names for channels and their IRQs + * @rxq_entries: Size of receive queues requested by user. + * @txq_entries: Size of transmit queues requested by user. * @next_buffer_table: First available buffer table id * @n_channels: Number of channels in use * @n_rx_channels: Number of channels used for RX (= number of RX queues) @@ -724,10 +724,11 @@ struct efx_nic { enum nic_state state; enum reset_type reset_pending; - 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]; + struct efx_channel *channel[EFX_MAX_CHANNELS]; + char channel_name[EFX_MAX_CHANNELS][IFNAMSIZ + 6]; + unsigned rxq_entries; + unsigned txq_entries; unsigned next_buffer_table; unsigned n_channels; unsigned n_rx_channels; @@ -794,6 +795,8 @@ struct efx_nic { u64 loopback_modes; void *loopback_selftest; + + struct efx_filter_state *filter_state; }; static inline int efx_dev_registered(struct efx_nic *efx) @@ -909,39 +912,67 @@ struct efx_nic_type { * *************************************************************************/ +static inline struct efx_channel * +efx_get_channel(struct efx_nic *efx, unsigned index) +{ + EFX_BUG_ON_PARANOID(index >= efx->n_channels); + return efx->channel[index]; +} + /* Iterate over all used channels */ #define efx_for_each_channel(_channel, _efx) \ - for (_channel = &((_efx)->channel[0]); \ - _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_TXQ_TYPES * \ - (_efx)->n_tx_channels]); \ - _tx_queue++) + for (_channel = (_efx)->channel[0]; \ + _channel; \ + _channel = (_channel->channel + 1 < (_efx)->n_channels) ? \ + (_efx)->channel[_channel->channel + 1] : NULL) + +extern struct efx_tx_queue * +efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type); + +static inline struct efx_tx_queue * +efx_channel_get_tx_queue(struct efx_channel *channel, unsigned type) +{ + struct efx_tx_queue *tx_queue = channel->tx_queue; + EFX_BUG_ON_PARANOID(type >= EFX_TXQ_TYPES); + return tx_queue->channel ? tx_queue + type : NULL; +} /* Iterate over all TX queues belonging to a channel */ #define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ - for (_tx_queue = (_channel)->tx_queue; \ + for (_tx_queue = efx_channel_get_tx_queue(channel, 0); \ _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_channels]); \ - _rx_queue++) +static inline struct efx_rx_queue * +efx_get_rx_queue(struct efx_nic *efx, unsigned index) +{ + EFX_BUG_ON_PARANOID(index >= efx->n_rx_channels); + return &efx->channel[index]->rx_queue; +} + +static inline struct efx_rx_queue * +efx_channel_get_rx_queue(struct efx_channel *channel) +{ + return channel->channel < channel->efx->n_rx_channels ? + &channel->rx_queue : NULL; +} /* Iterate over all RX queues belonging to a channel */ #define efx_for_each_channel_rx_queue(_rx_queue, _channel) \ - for (_rx_queue = &((_channel)->efx->rx_queue[(_channel)->channel]); \ + for (_rx_queue = efx_channel_get_rx_queue(channel); \ _rx_queue; \ - _rx_queue = NULL) \ - if (_rx_queue->channel != (_channel)) \ - continue; \ - else + _rx_queue = NULL) + +static inline struct efx_channel * +efx_rx_queue_channel(struct efx_rx_queue *rx_queue) +{ + return container_of(rx_queue, struct efx_channel, rx_queue); +} + +static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue) +{ + return efx_rx_queue_channel(rx_queue)->channel; +} /* Returns a pointer to the specified receive buffer in the RX * descriptor queue. @@ -949,7 +980,7 @@ struct efx_nic_type { static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue, unsigned int index) { - return (&rx_queue->buffer[index]); + return &rx_queue->buffer[index]; } /* Set bit in a little-endian bitfield */ |