diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index 99d8c82124bb..f97f828a0898 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -189,13 +189,17 @@ struct efx_tx_buffer { * @channel: The associated channel * @core_txq: The networking core TX queue structure * @buffer: The software buffer ring - * @tsoh_page: Array of pages of TSO header buffers + * @cb_page: Array of pages of copy buffers. Carved up according to + * %EFX_TX_CB_ORDER into %EFX_TX_CB_SIZE-sized chunks. * @txd: The hardware descriptor ring * @ptr_mask: The size of the ring minus 1. * @piobuf: PIO buffer region for this TX queue (shared with its partner). * Size of the region is efx_piobuf_size. * @piobuf_offset: Buffer offset to be specified in PIO descriptors * @initialised: Has hardware queue been initialised? + * @tx_min_size: Minimum transmit size for this queue. Depends on HW. + * @handle_tso: TSO xmit preparation handler. Sets up the TSO metadata and + * may also map tx data, depending on the nature of the TSO implementation. * @read_count: Current read pointer. * This is the number of buffers that have been removed from both rings. * @old_write_count: The value of @write_count when last checked. @@ -221,9 +225,11 @@ struct efx_tx_buffer { * @tso_long_headers: Number of packets with headers too long for standard * blocks * @tso_packets: Number of packets via the TSO xmit path + * @tso_fallbacks: Number of times TSO fallback used * @pushes: Number of times the TX push feature has been used * @pio_packets: Number of times the TX PIO feature has been used * @xmit_more_available: Are any packets waiting to be pushed to the NIC + * @cb_packets: Number of times the TX copybreak feature has been used * @empty_read_count: If the completion path has seen the queue as empty * and the transmission path has not yet checked this, the value of * @read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0. @@ -236,12 +242,16 @@ struct efx_tx_queue { struct efx_channel *channel; struct netdev_queue *core_txq; struct efx_tx_buffer *buffer; - struct efx_buffer *tsoh_page; + struct efx_buffer *cb_page; struct efx_special_buffer txd; unsigned int ptr_mask; void __iomem *piobuf; unsigned int piobuf_offset; bool initialised; + unsigned int tx_min_size; + + /* Function pointers used in the fast path. */ + int (*handle_tso)(struct efx_tx_queue*, struct sk_buff*, bool *); /* Members used mainly on the completion path */ unsigned int read_count ____cacheline_aligned_in_smp; @@ -257,9 +267,11 @@ struct efx_tx_queue { unsigned int tso_bursts; unsigned int tso_long_headers; unsigned int tso_packets; + unsigned int tso_fallbacks; unsigned int pushes; unsigned int pio_packets; bool xmit_more_available; + unsigned int cb_packets; /* Statistics to supplement MAC stats */ unsigned long tx_packets; @@ -269,6 +281,9 @@ struct efx_tx_queue { atomic_t flush_outstanding; }; +#define EFX_TX_CB_ORDER 7 +#define EFX_TX_CB_SIZE (1 << EFX_TX_CB_ORDER) - NET_IP_ALIGN + /** * struct efx_rx_buffer - An Efx RX data buffer * @dma_addr: DMA base address of the buffer @@ -853,6 +868,7 @@ struct vfdi_status; * @rx_hash_key: Toeplitz hash key for RSS * @rx_indir_table: Indirection table for RSS * @rx_scatter: Scatter mode enabled for receives + * @rx_hash_udp_4tuple: UDP 4-tuple hashing enabled * @int_error_count: Number of internal errors seen recently * @int_error_expire: Time at which error count will be expired * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will @@ -990,6 +1006,7 @@ struct efx_nic { u8 rx_hash_key[40]; u32 rx_indir_table[128]; bool rx_scatter; + bool rx_hash_udp_4tuple; unsigned int_error_count; unsigned long int_error_expire; @@ -1210,6 +1227,8 @@ struct efx_mtd_partition { * and tx_type will already have been validated but this operation * must validate and update rx_filter. * @set_mac_address: Set the MAC address of the device + * @tso_versions: Returns mask of firmware-assisted TSO versions supported. + * If %NULL, then device does not support any TSO version. * @revision: Hardware architecture revision * @txd_ptr_tbl_base: TX descriptor ring base address * @rxd_ptr_tbl_base: RX descriptor ring base address @@ -1286,6 +1305,8 @@ struct efx_nic_type { void (*tx_init)(struct efx_tx_queue *tx_queue); void (*tx_remove)(struct efx_tx_queue *tx_queue); void (*tx_write)(struct efx_tx_queue *tx_queue); + unsigned int (*tx_limit_len)(struct efx_tx_queue *tx_queue, + dma_addr_t dma_addr, unsigned int len); int (*rx_push_rss_config)(struct efx_nic *efx, bool user, const u32 *rx_indir_table); int (*rx_probe)(struct efx_rx_queue *rx_queue); @@ -1364,6 +1385,7 @@ struct efx_nic_type { void (*vswitching_remove)(struct efx_nic *efx); int (*get_mac_address)(struct efx_nic *efx, unsigned char *perm_addr); int (*set_mac_address)(struct efx_nic *efx); + u32 (*tso_versions)(struct efx_nic *efx); int revision; unsigned int txd_ptr_tbl_base; @@ -1543,4 +1565,32 @@ static inline netdev_features_t efx_supported_features(const struct efx_nic *efx return net_dev->features | net_dev->hw_features; } +/* Get the current TX queue insert index. */ +static inline unsigned int +efx_tx_queue_get_insert_index(const struct efx_tx_queue *tx_queue) +{ + return tx_queue->insert_count & tx_queue->ptr_mask; +} + +/* Get a TX buffer. */ +static inline struct efx_tx_buffer * +__efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) +{ + return &tx_queue->buffer[efx_tx_queue_get_insert_index(tx_queue)]; +} + +/* Get a TX buffer, checking it's not currently in use. */ +static inline struct efx_tx_buffer * +efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) +{ + struct efx_tx_buffer *buffer = + __efx_tx_queue_get_insert_buffer(tx_queue); + + EFX_BUG_ON_PARANOID(buffer->len); + EFX_BUG_ON_PARANOID(buffer->flags); + EFX_BUG_ON_PARANOID(buffer->unmap_len); + + return buffer; +} + #endif /* EFX_NET_DRIVER_H */ |