/* SPDX-License-Identifier: GPL-2.0-only */ /**************************************************************************** * Driver for Solarflare network controllers and boards * Copyright 2005-2006 Fen Systems Ltd. * Copyright 2006-2013 Solarflare Communications Inc. */ #ifndef EFX_EFX_H #define EFX_EFX_H #include <linux/indirect_call_wrapper.h> #include "net_driver.h" #include "ef100_rx.h" #include "ef100_tx.h" #include "efx_common.h" #include "filter.h" int efx_net_open(struct net_device *net_dev); int efx_net_stop(struct net_device *net_dev); /* TX */ void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue); netdev_tx_t efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev); netdev_tx_t __efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb); static inline netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb) { … } void efx_xmit_done_single(struct efx_tx_queue *tx_queue); extern unsigned int efx_piobuf_size; /* RX */ void __efx_rx_packet(struct efx_channel *channel); void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, unsigned int n_frags, unsigned int len, u16 flags); static inline void efx_rx_flush_packet(struct efx_channel *channel) { … } static inline bool efx_rx_buf_hash_valid(struct efx_nic *efx, const u8 *prefix) { … } /* Maximum number of TCP segments we support for soft-TSO */ #define EFX_TSO_MAX_SEGS … /* The smallest [rt]xq_entries that the driver supports. RX minimum * is a bit arbitrary. For TX, we must have space for at least 2 * TSO skbs. */ #define EFX_RXQ_MIN_ENT … #define EFX_TXQ_MIN_ENT(efx) … /* All EF10 architecture NICs steal one bit of the DMAQ size for various * other purposes when counting TxQ entries, so we halve the queue size. */ #define EFX_TXQ_MAX_ENT(efx) … static inline bool efx_rss_enabled(struct efx_nic *efx) { … } /* Filters */ /** * efx_filter_insert_filter - add or replace a filter * @efx: NIC in which to insert the filter * @spec: Specification for the filter * @replace_equal: Flag for whether the specified filter may replace an * existing filter with equal priority * * On success, return the filter ID. * On failure, return a negative error code. * * If existing filters have equal match values to the new filter spec, * then the new filter might replace them or the function might fail, * as follows. * * 1. If the existing filters have lower priority, or @replace_equal * is set and they have equal priority, replace them. * * 2. If the existing filters have higher priority, return -%EPERM. * * 3. If !efx_filter_is_mc_recipient(@spec), or the NIC does not * support delivery to multiple recipients, return -%EEXIST. * * This implies that filters for multiple multicast recipients must * all be inserted with the same priority and @replace_equal = %false. */ static inline s32 efx_filter_insert_filter(struct efx_nic *efx, struct efx_filter_spec *spec, bool replace_equal) { … } /** * efx_filter_remove_id_safe - remove a filter by ID, carefully * @efx: NIC from which to remove the filter * @priority: Priority of filter, as passed to @efx_filter_insert_filter * @filter_id: ID of filter, as returned by @efx_filter_insert_filter * * This function will range-check @filter_id, so it is safe to call * with a value passed from userland. */ static inline int efx_filter_remove_id_safe(struct efx_nic *efx, enum efx_filter_priority priority, u32 filter_id) { … } /** * efx_filter_get_filter_safe - retrieve a filter by ID, carefully * @efx: NIC from which to remove the filter * @priority: Priority of filter, as passed to @efx_filter_insert_filter * @filter_id: ID of filter, as returned by @efx_filter_insert_filter * @spec: Buffer in which to store filter specification * * This function will range-check @filter_id, so it is safe to call * with a value passed from userland. */ static inline int efx_filter_get_filter_safe(struct efx_nic *efx, enum efx_filter_priority priority, u32 filter_id, struct efx_filter_spec *spec) { … } static inline u32 efx_filter_count_rx_used(struct efx_nic *efx, enum efx_filter_priority priority) { … } static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx) { … } static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx, enum efx_filter_priority priority, u32 *buf, u32 size) { … } /* RSS contexts */ static inline bool efx_rss_active(struct efx_rss_context_priv *ctx) { … } /* Ethtool support */ extern const struct ethtool_ops efx_ethtool_ops; /* Global */ unsigned int efx_usecs_to_ticks(struct efx_nic *efx, unsigned int usecs); unsigned int efx_ticks_to_usecs(struct efx_nic *efx, unsigned int ticks); int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, unsigned int rx_usecs, bool rx_adaptive, bool rx_may_override_tx); void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, unsigned int *rx_usecs, bool *rx_adaptive); /* Update the generic software stats in the passed stats array */ void efx_update_sw_stats(struct efx_nic *efx, u64 *stats); /* MTD */ #ifdef CONFIG_SFC_MTD int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts, size_t n_parts, size_t sizeof_part); static inline int efx_mtd_probe(struct efx_nic *efx) { … } void efx_mtd_rename(struct efx_nic *efx); void efx_mtd_remove(struct efx_nic *efx); #else static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; } static inline void efx_mtd_rename(struct efx_nic *efx) {} static inline void efx_mtd_remove(struct efx_nic *efx) {} #endif #ifdef CONFIG_SFC_SRIOV static inline unsigned int efx_vf_size(struct efx_nic *efx) { … } #endif static inline void efx_device_detach_sync(struct efx_nic *efx) { … } static inline void efx_device_attach_if_not_resetting(struct efx_nic *efx) { … } static inline bool efx_rwsem_assert_write_locked(struct rw_semaphore *sem) { … } int efx_xdp_tx_buffers(struct efx_nic *efx, int n, struct xdp_frame **xdpfs, bool flush); #endif /* EFX_EFX_H */
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