mirror of https://gitee.com/openkylin/linux.git
220 lines
6.9 KiB
C
220 lines
6.9 KiB
C
/* 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 "net_driver.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);
|
|
void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
|
|
void efx_xmit_done_single(struct efx_tx_queue *tx_queue);
|
|
int efx_setup_tc(struct net_device *net_dev, enum tc_setup_type type,
|
|
void *type_data);
|
|
extern unsigned int efx_piobuf_size;
|
|
extern bool efx_separate_tx_channels;
|
|
|
|
/* 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)
|
|
{
|
|
if (channel->rx_pkt_n_frags)
|
|
__efx_rx_packet(channel);
|
|
}
|
|
|
|
/* Maximum number of TCP segments we support for soft-TSO */
|
|
#define EFX_TSO_MAX_SEGS 100
|
|
|
|
/* 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 128U
|
|
#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(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) (EFX_WORKAROUND_EF10(efx) ? \
|
|
EFX_MAX_DMAQ_SIZE / 2 : EFX_MAX_DMAQ_SIZE)
|
|
|
|
static inline bool efx_rss_enabled(struct efx_nic *efx)
|
|
{
|
|
return efx->rss_spread > 1;
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
return efx->type->filter_insert(efx, spec, 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)
|
|
{
|
|
return efx->type->filter_remove_safe(efx, priority, 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)
|
|
{
|
|
return efx->type->filter_get_safe(efx, priority, filter_id, spec);
|
|
}
|
|
|
|
static inline u32 efx_filter_count_rx_used(struct efx_nic *efx,
|
|
enum efx_filter_priority priority)
|
|
{
|
|
return efx->type->filter_count_rx_used(efx, priority);
|
|
}
|
|
static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx)
|
|
{
|
|
return efx->type->filter_get_rx_id_limit(efx);
|
|
}
|
|
static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx,
|
|
enum efx_filter_priority priority,
|
|
u32 *buf, u32 size)
|
|
{
|
|
return efx->type->filter_get_rx_ids(efx, priority, buf, size);
|
|
}
|
|
|
|
/* RSS contexts */
|
|
static inline bool efx_rss_active(struct efx_rss_context *ctx)
|
|
{
|
|
return ctx->context_id != EFX_MCDI_RSS_CONTEXT_INVALID;
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
return efx->type->mtd_probe(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)
|
|
{
|
|
return 1 << efx->vi_scale;
|
|
}
|
|
#endif
|
|
|
|
static inline void efx_device_detach_sync(struct efx_nic *efx)
|
|
{
|
|
struct net_device *dev = efx->net_dev;
|
|
|
|
/* Lock/freeze all TX queues so that we can be sure the
|
|
* TX scheduler is stopped when we're done and before
|
|
* netif_device_present() becomes false.
|
|
*/
|
|
netif_tx_lock_bh(dev);
|
|
netif_device_detach(dev);
|
|
netif_tx_unlock_bh(dev);
|
|
}
|
|
|
|
static inline void efx_device_attach_if_not_resetting(struct efx_nic *efx)
|
|
{
|
|
if ((efx->state != STATE_DISABLED) && !efx->reset_pending)
|
|
netif_device_attach(efx->net_dev);
|
|
}
|
|
|
|
static inline bool efx_rwsem_assert_write_locked(struct rw_semaphore *sem)
|
|
{
|
|
if (WARN_ON(down_read_trylock(sem))) {
|
|
up_read(sem);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
int efx_xdp_tx_buffers(struct efx_nic *efx, int n, struct xdp_frame **xdpfs,
|
|
bool flush);
|
|
|
|
#endif /* EFX_EFX_H */
|