diff options
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_netdev.h')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.h | 97 |
1 files changed, 87 insertions, 10 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h index efbcffd22215..8795e0b1dc3c 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.h +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h @@ -34,7 +34,9 @@ #define ENA_H #include <linux/bitops.h> +#include <linux/dim.h> #include <linux/etherdevice.h> +#include <linux/if_vlan.h> #include <linux/inetdevice.h> #include <linux/interrupt.h> #include <linux/netdevice.h> @@ -81,6 +83,8 @@ #define ENA_DEFAULT_RING_SIZE (1024) #define ENA_MIN_RING_SIZE (256) +#define ENA_MIN_NUM_IO_QUEUES (1) + #define ENA_TX_WAKEUP_THRESH (MAX_SKB_FRAGS + 2) #define ENA_DEFAULT_RX_COPYBREAK (256 - NET_IP_ALIGN) @@ -126,6 +130,8 @@ #define ENA_IO_TXQ_IDX(q) (2 * (q)) #define ENA_IO_RXQ_IDX(q) (2 * (q) + 1) +#define ENA_IO_TXQ_IDX_TO_COMBINED_IDX(q) ((q) / 2) +#define ENA_IO_RXQ_IDX_TO_COMBINED_IDX(q) (((q) - 1) / 2) #define ENA_MGMNT_IRQ_IDX 0 #define ENA_IO_IRQ_FIRST_IDX 1 @@ -139,6 +145,18 @@ #define ENA_MMIO_DISABLE_REG_READ BIT(0) +/* The max MTU size is configured to be the ethernet frame size without + * the overhead of the ethernet header, which can have a VLAN header, and + * a frame check sequence (FCS). + * The buffer size we share with the device is defined to be ENA_PAGE_SIZE + */ + +#define ENA_XDP_MAX_MTU (ENA_PAGE_SIZE - ETH_HLEN - ETH_FCS_LEN - \ + VLAN_HLEN - XDP_PACKET_HEADROOM) + +#define ENA_IS_XDP_INDEX(adapter, index) (((index) >= (adapter)->xdp_first_ring) && \ + ((index) < (adapter)->xdp_first_ring + (adapter)->xdp_num_queues)) + struct ena_irq { irq_handler_t handler; void *data; @@ -152,17 +170,20 @@ struct ena_napi { struct napi_struct napi ____cacheline_aligned; struct ena_ring *tx_ring; struct ena_ring *rx_ring; + struct ena_ring *xdp_ring; + bool first_interrupt; u32 qid; + struct dim dim; }; struct ena_calc_queue_size_ctx { struct ena_com_dev_get_features_ctx *get_feat_ctx; struct ena_com_dev *ena_dev; struct pci_dev *pdev; - u16 tx_queue_size; - u16 rx_queue_size; - u16 max_tx_queue_size; - u16 max_rx_queue_size; + u32 tx_queue_size; + u32 rx_queue_size; + u32 max_tx_queue_size; + u32 max_rx_queue_size; u16 max_tx_sgl_size; u16 max_rx_sgl_size; }; @@ -176,6 +197,17 @@ struct ena_tx_buffer { /* num of buffers used by this skb */ u32 num_of_bufs; + /* XDP buffer structure which is used for sending packets in + * the xdp queues + */ + struct xdp_frame *xdpf; + /* The rx page for the rx buffer that was received in rx and + * re transmitted on xdp tx queues as a result of XDP_TX action. + * We need to free the page once we finished cleaning the buffer in + * clean_xdp_irq() + */ + struct page *xdp_rx_page; + /* Indicate if bufs[0] map the linear data of the skb. */ u8 map_linear_data; @@ -254,10 +286,13 @@ struct ena_ring { struct ena_adapter *adapter; struct ena_com_io_cq *ena_com_io_cq; struct ena_com_io_sq *ena_com_io_sq; + struct bpf_prog *xdp_bpf_prog; + struct xdp_rxq_info xdp_rxq; u16 next_to_use; u16 next_to_clean; u16 rx_copybreak; + u16 rx_headroom; u16 qid; u16 mtu; u16 sgl_size; @@ -278,8 +313,7 @@ struct ena_ring { struct ena_com_rx_buf_info ena_bufs[ENA_PKT_MAX_BUFS]; u32 smoothed_interval; u32 per_napi_packets; - u32 per_napi_bytes; - enum ena_intr_moder_level moder_tbl_idx; + u16 non_empty_napi_events; struct u64_stats_sync syncp; union { struct ena_stats_tx tx_stats; @@ -323,15 +357,13 @@ struct ena_adapter { u32 rx_copybreak; u32 max_mtu; - int num_queues; + u32 num_io_queues; + u32 max_num_io_queues; int msix_vecs; u32 missing_tx_completion_threshold; - u32 tx_usecs, rx_usecs; /* interrupt moderation */ - u32 tx_frames, rx_frames; /* interrupt moderation */ - u32 requested_tx_ring_size; u32 requested_rx_ring_size; @@ -378,6 +410,10 @@ struct ena_adapter { u32 last_monitored_tx_qid; enum ena_regs_reset_reason_types reset_reason; + + struct bpf_prog *xdp_bpf_prog; + u32 xdp_first_ring; + u32 xdp_num_queues; }; void ena_set_ethtool_ops(struct net_device *netdev); @@ -390,6 +426,47 @@ int ena_update_queue_sizes(struct ena_adapter *adapter, u32 new_tx_size, u32 new_rx_size); +int ena_update_queue_count(struct ena_adapter *adapter, u32 new_channel_count); + int ena_get_sset_count(struct net_device *netdev, int sset); +enum ena_xdp_errors_t { + ENA_XDP_ALLOWED = 0, + ENA_XDP_CURRENT_MTU_TOO_LARGE, + ENA_XDP_NO_ENOUGH_QUEUES, +}; + +static inline bool ena_xdp_queues_present(struct ena_adapter *adapter) +{ + return adapter->xdp_first_ring != 0; +} + +static inline bool ena_xdp_present(struct ena_adapter *adapter) +{ + return !!adapter->xdp_bpf_prog; +} + +static inline bool ena_xdp_present_ring(struct ena_ring *ring) +{ + return !!ring->xdp_bpf_prog; +} + +static inline int ena_xdp_legal_queue_count(struct ena_adapter *adapter, + u32 queues) +{ + return 2 * queues <= adapter->max_num_io_queues; +} + +static inline enum ena_xdp_errors_t ena_xdp_allowed(struct ena_adapter *adapter) +{ + enum ena_xdp_errors_t rc = ENA_XDP_ALLOWED; + + if (adapter->netdev->mtu > ENA_XDP_MAX_MTU) + rc = ENA_XDP_CURRENT_MTU_TOO_LARGE; + else if (!ena_xdp_legal_queue_count(adapter, adapter->num_io_queues)) + rc = ENA_XDP_NO_ENOUGH_QUEUES; + + return rc; +} + #endif /* !(ENA_H) */ |
