diff options
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve.h')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve.h | 186 |
1 files changed, 121 insertions, 65 deletions
diff --git a/drivers/net/ethernet/google/gve/gve.h b/drivers/net/ethernet/google/gve/gve.h index b80349154604..ae1e21c9b0a5 100644 --- a/drivers/net/ethernet/google/gve/gve.h +++ b/drivers/net/ethernet/google/gve/gve.h @@ -9,6 +9,7 @@ #include <linux/dma-mapping.h> #include <linux/dmapool.h> +#include <linux/ethtool_netlink.h> #include <linux/netdevice.h> #include <linux/pci.h> #include <linux/u64_stats_sync.h> @@ -49,16 +50,23 @@ /* PTYPEs are always 10 bits. */ #define GVE_NUM_PTYPES 1024 +/* Default minimum ring size */ +#define GVE_DEFAULT_MIN_TX_RING_SIZE 256 +#define GVE_DEFAULT_MIN_RX_RING_SIZE 512 + #define GVE_DEFAULT_RX_BUFFER_SIZE 2048 +#define GVE_MAX_RX_BUFFER_SIZE 4096 + #define GVE_DEFAULT_RX_BUFFER_OFFSET 2048 #define GVE_XDP_ACTIONS 5 #define GVE_GQ_TX_MIN_PKT_DESC_BYTES 182 +#define GVE_DEFAULT_HEADER_BUFFER_SIZE 128 + #define DQO_QPL_DEFAULT_TX_PAGES 512 -#define DQO_QPL_DEFAULT_RX_PAGES 2048 /* Maximum TSO size supported on DQO */ #define GVE_DQO_TX_MAX 0x3FFFF @@ -150,6 +158,11 @@ struct gve_rx_compl_queue_dqo { u32 mask; /* Mask for indices to the size of the ring */ }; +struct gve_header_buf { + u8 *data; + dma_addr_t addr; +}; + /* Stores state for tracking buffers posted to HW */ struct gve_rx_buf_state_dqo { /* The page posted to HW. */ @@ -252,19 +265,26 @@ struct gve_rx_ring { /* track number of used buffers */ u16 used_buf_states_cnt; + + /* Address info of the buffers for header-split */ + struct gve_header_buf hdr_bufs; } dqo; }; u64 rbytes; /* free-running bytes received */ + u64 rx_hsplit_bytes; /* free-running header bytes received */ u64 rpackets; /* free-running packets received */ u32 cnt; /* free-running total number of completed packets */ u32 fill_cnt; /* free-running total number of descs and buffs posted */ u32 mask; /* masks the cnt and fill_cnt to the size of the ring */ + u64 rx_hsplit_pkt; /* free-running packets with headers split */ u64 rx_copybreak_pkt; /* free-running count of copybreak packets */ u64 rx_copied_pkt; /* free-running total number of copied packets */ u64 rx_skb_alloc_fail; /* free-running count of skb alloc fails */ u64 rx_buf_alloc_fail; /* free-running count of buffer alloc fails */ u64 rx_desc_err_dropped_pkt; /* free-running count of packets dropped by descriptor error */ + /* free-running count of unsplit packets due to header buffer overflow or hdr_len is 0 */ + u64 rx_hsplit_unsplit_pkt; u64 rx_cont_packet_cnt; /* free-running multi-fragment packets received */ u64 rx_frag_flip_cnt; /* free-running count of rx segments where page_flip was used */ u64 rx_frag_copy_cnt; /* free-running count of rx segments copied */ @@ -590,6 +610,7 @@ struct gve_notify_block { struct gve_priv *priv; struct gve_tx_ring *tx; /* tx rings on this block */ struct gve_rx_ring *rx; /* rx rings on this block */ + u32 irq; }; /* Tracks allowed and current queue settings */ @@ -604,11 +625,6 @@ struct gve_qpl_config { unsigned long *qpl_id_map; /* bitmap of used qpl ids */ }; -struct gve_options_dqo_rda { - u16 tx_comp_ring_entries; /* number of tx_comp descriptors */ - u16 rx_buff_ring_entries; /* number of rx_buff descriptors */ -}; - struct gve_irq_db { __be32 index; } ____cacheline_aligned; @@ -622,6 +638,34 @@ struct gve_ptype_lut { struct gve_ptype ptypes[GVE_NUM_PTYPES]; }; +/* Parameters for allocating resources for tx queues */ +struct gve_tx_alloc_rings_cfg { + struct gve_queue_config *qcfg; + + u16 ring_size; + u16 start_idx; + u16 num_rings; + bool raw_addressing; + + /* Allocated resources are returned here */ + struct gve_tx_ring *tx; +}; + +/* Parameters for allocating resources for rx queues */ +struct gve_rx_alloc_rings_cfg { + /* tx config is also needed to determine QPL ids */ + struct gve_queue_config *qcfg; + struct gve_queue_config *qcfg_tx; + + u16 ring_size; + u16 packet_buffer_size; + bool raw_addressing; + bool enable_header_split; + + /* Allocated resources are returned here */ + struct gve_rx_ring *rx; +}; + /* GVE_QUEUE_FORMAT_UNSPECIFIED must be zero since 0 is the default value * when the entire configure_device_resources command is zeroed out and the * queue_format is not specified. @@ -638,7 +682,6 @@ struct gve_priv { struct net_device *dev; struct gve_tx_ring *tx; /* array of tx_cfg.num_queues */ struct gve_rx_ring *rx; /* array of rx_cfg.num_queues */ - struct gve_queue_page_list *qpls; /* array of num qpls */ struct gve_notify_block *ntfy_blocks; /* array of num_ntfy_blks */ struct gve_irq_db *irq_db_indices; /* array of num_ntfy_blks */ dma_addr_t irq_db_indices_bus; @@ -651,9 +694,13 @@ struct gve_priv { u16 num_event_counters; u16 tx_desc_cnt; /* num desc per ring */ u16 rx_desc_cnt; /* num desc per ring */ + u16 max_tx_desc_cnt; + u16 max_rx_desc_cnt; + u16 min_tx_desc_cnt; + u16 min_rx_desc_cnt; + bool modify_ring_size_enabled; + bool default_min_ring_size; u16 tx_pages_per_qpl; /* Suggested number of pages per qpl for TX queues by NIC */ - u16 rx_pages_per_qpl; /* Suggested number of pages per qpl for RX queues by NIC */ - u16 rx_data_slot_cnt; /* rx buffer length */ u64 max_registered_pages; u64 num_registered_pages; /* num pages registered with NIC */ struct bpf_prog *xdp_prog; /* XDP BPF program */ @@ -663,7 +710,6 @@ struct gve_priv { u16 num_xdp_queues; struct gve_queue_config tx_cfg; struct gve_queue_config rx_cfg; - struct gve_qpl_config qpl_cfg; /* map used QPL ids */ u32 num_ntfy_blks; /* spilt between TX and RX so must be even */ struct gve_registers __iomem *reg_bar0; /* see gve_register.h */ @@ -725,17 +771,20 @@ struct gve_priv { u64 link_speed; bool up_before_suspend; /* True if dev was up before suspend */ - struct gve_options_dqo_rda options_dqo_rda; struct gve_ptype_lut *ptype_lut_dqo; /* Must be a power of two. */ - int data_buffer_size_dqo; + u16 data_buffer_size_dqo; + u16 max_rx_buffer_size; /* device limit */ enum gve_queue_format queue_format; /* Interrupt coalescing settings */ u32 tx_coalesce_usecs; u32 rx_coalesce_usecs; + + u16 header_buf_size; /* device configured, header-split supported if non-zero */ + bool header_split_enabled; /* True if the header split is enabled by the user */ }; enum gve_service_task_flags_bit { @@ -917,14 +966,14 @@ static inline bool gve_is_qpl(struct gve_priv *priv) priv->queue_format == GVE_DQO_QPL_FORMAT; } -/* Returns the number of tx queue page lists - */ -static inline u32 gve_num_tx_qpls(struct gve_priv *priv) +/* Returns the number of tx queue page lists */ +static inline u32 gve_num_tx_qpls(const struct gve_queue_config *tx_cfg, + int num_xdp_queues, + bool is_qpl) { - if (!gve_is_qpl(priv)) + if (!is_qpl) return 0; - - return priv->tx_cfg.num_queues + priv->num_xdp_queues; + return tx_cfg->num_queues + num_xdp_queues; } /* Returns the number of XDP tx queue page lists @@ -937,14 +986,13 @@ static inline u32 gve_num_xdp_qpls(struct gve_priv *priv) return priv->num_xdp_queues; } -/* Returns the number of rx queue page lists - */ -static inline u32 gve_num_rx_qpls(struct gve_priv *priv) +/* Returns the number of rx queue page lists */ +static inline u32 gve_num_rx_qpls(const struct gve_queue_config *rx_cfg, + bool is_qpl) { - if (!gve_is_qpl(priv)) + if (!is_qpl) return 0; - - return priv->rx_cfg.num_queues; + return rx_cfg->num_queues; } static inline u32 gve_tx_qpl_id(struct gve_priv *priv, int tx_qid) @@ -957,59 +1005,34 @@ static inline u32 gve_rx_qpl_id(struct gve_priv *priv, int rx_qid) return priv->tx_cfg.max_queues + rx_qid; } -static inline u32 gve_tx_start_qpl_id(struct gve_priv *priv) -{ - return gve_tx_qpl_id(priv, 0); -} - -static inline u32 gve_rx_start_qpl_id(struct gve_priv *priv) +static inline u32 gve_get_rx_qpl_id(const struct gve_queue_config *tx_cfg, int rx_qid) { - return gve_rx_qpl_id(priv, 0); + return tx_cfg->max_queues + rx_qid; } -/* Returns a pointer to the next available tx qpl in the list of qpls - */ -static inline -struct gve_queue_page_list *gve_assign_tx_qpl(struct gve_priv *priv, int tx_qid) +static inline u32 gve_tx_start_qpl_id(struct gve_priv *priv) { - int id = gve_tx_qpl_id(priv, tx_qid); - - /* QPL already in use */ - if (test_bit(id, priv->qpl_cfg.qpl_id_map)) - return NULL; - - set_bit(id, priv->qpl_cfg.qpl_id_map); - return &priv->qpls[id]; + return gve_tx_qpl_id(priv, 0); } -/* Returns a pointer to the next available rx qpl in the list of qpls - */ -static inline -struct gve_queue_page_list *gve_assign_rx_qpl(struct gve_priv *priv, int rx_qid) +static inline u32 gve_rx_start_qpl_id(const struct gve_queue_config *tx_cfg) { - int id = gve_rx_qpl_id(priv, rx_qid); - - /* QPL already in use */ - if (test_bit(id, priv->qpl_cfg.qpl_id_map)) - return NULL; - - set_bit(id, priv->qpl_cfg.qpl_id_map); - return &priv->qpls[id]; + return gve_get_rx_qpl_id(tx_cfg, 0); } -/* Unassigns the qpl with the given id - */ -static inline void gve_unassign_qpl(struct gve_priv *priv, int id) +static inline u32 gve_get_rx_pages_per_qpl_dqo(u32 rx_desc_cnt) { - clear_bit(id, priv->qpl_cfg.qpl_id_map); + /* For DQO, page count should be more than ring size for + * out-of-order completions. Set it to two times of ring size. + */ + return 2 * rx_desc_cnt; } -/* Returns the correct dma direction for tx and rx qpls - */ +/* Returns the correct dma direction for tx and rx qpls */ static inline enum dma_data_direction gve_qpl_dma_dir(struct gve_priv *priv, int id) { - if (id < gve_rx_start_qpl_id(priv)) + if (id < gve_rx_start_qpl_id(&priv->tx_cfg)) return DMA_TO_DEVICE; else return DMA_FROM_DEVICE; @@ -1036,12 +1059,21 @@ static inline u32 gve_xdp_tx_start_queue_id(struct gve_priv *priv) return gve_xdp_tx_queue_id(priv, 0); } +/* gqi napi handler defined in gve_main.c */ +int gve_napi_poll(struct napi_struct *napi, int budget); + /* buffers */ int gve_alloc_page(struct gve_priv *priv, struct device *dev, struct page **page, dma_addr_t *dma, enum dma_data_direction, gfp_t gfp_flags); void gve_free_page(struct device *dev, struct page *page, dma_addr_t dma, enum dma_data_direction); +/* qpls */ +struct gve_queue_page_list *gve_alloc_queue_page_list(struct gve_priv *priv, + u32 id, int pages); +void gve_free_queue_page_list(struct gve_priv *priv, + struct gve_queue_page_list *qpl, + u32 id); /* tx handling */ netdev_tx_t gve_tx(struct sk_buff *skb, struct net_device *dev); int gve_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, @@ -1051,8 +1083,12 @@ int gve_xdp_xmit_one(struct gve_priv *priv, struct gve_tx_ring *tx, void gve_xdp_tx_flush(struct gve_priv *priv, u32 xdp_qid); bool gve_tx_poll(struct gve_notify_block *block, int budget); bool gve_xdp_poll(struct gve_notify_block *block, int budget); -int gve_tx_alloc_rings(struct gve_priv *priv, int start_id, int num_rings); -void gve_tx_free_rings_gqi(struct gve_priv *priv, int start_id, int num_rings); +int gve_tx_alloc_rings_gqi(struct gve_priv *priv, + struct gve_tx_alloc_rings_cfg *cfg); +void gve_tx_free_rings_gqi(struct gve_priv *priv, + struct gve_tx_alloc_rings_cfg *cfg); +void gve_tx_start_ring_gqi(struct gve_priv *priv, int idx); +void gve_tx_stop_ring_gqi(struct gve_priv *priv, int idx); u32 gve_tx_load_event_counter(struct gve_priv *priv, struct gve_tx_ring *tx); bool gve_tx_clean_pending(struct gve_priv *priv, struct gve_tx_ring *tx); @@ -1060,11 +1096,31 @@ bool gve_tx_clean_pending(struct gve_priv *priv, struct gve_tx_ring *tx); void gve_rx_write_doorbell(struct gve_priv *priv, struct gve_rx_ring *rx); int gve_rx_poll(struct gve_notify_block *block, int budget); bool gve_rx_work_pending(struct gve_rx_ring *rx); +int gve_rx_alloc_ring_gqi(struct gve_priv *priv, + struct gve_rx_alloc_rings_cfg *cfg, + struct gve_rx_ring *rx, + int idx); +void gve_rx_free_ring_gqi(struct gve_priv *priv, struct gve_rx_ring *rx, + struct gve_rx_alloc_rings_cfg *cfg); int gve_rx_alloc_rings(struct gve_priv *priv); -void gve_rx_free_rings_gqi(struct gve_priv *priv); +int gve_rx_alloc_rings_gqi(struct gve_priv *priv, + struct gve_rx_alloc_rings_cfg *cfg); +void gve_rx_free_rings_gqi(struct gve_priv *priv, + struct gve_rx_alloc_rings_cfg *cfg); +void gve_rx_start_ring_gqi(struct gve_priv *priv, int idx); +void gve_rx_stop_ring_gqi(struct gve_priv *priv, int idx); +u16 gve_get_pkt_buf_size(const struct gve_priv *priv, bool enable_hplit); +bool gve_header_split_supported(const struct gve_priv *priv); +int gve_set_hsplit_config(struct gve_priv *priv, u8 tcp_data_split); /* Reset */ void gve_schedule_reset(struct gve_priv *priv); int gve_reset(struct gve_priv *priv, bool attempt_teardown); +void gve_get_curr_alloc_cfgs(struct gve_priv *priv, + struct gve_tx_alloc_rings_cfg *tx_alloc_cfg, + struct gve_rx_alloc_rings_cfg *rx_alloc_cfg); +int gve_adjust_config(struct gve_priv *priv, + struct gve_tx_alloc_rings_cfg *tx_alloc_cfg, + struct gve_rx_alloc_rings_cfg *rx_alloc_cfg); int gve_adjust_queues(struct gve_priv *priv, struct gve_queue_config new_rx_config, struct gve_queue_config new_tx_config); |