Quelle efx.h
Sprache: 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 <linux/indirect_call_wrapper.h>
#include "net_driver.h"
#include "filter.h"
/* TX */
void efx_siena_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
netdev_tx_t efx_siena_hard_start_xmit(struct sk_buff *skb,
struct net_device *net_dev);
netdev_tx_t __efx_siena_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)
{
return INDIRECT_CALL_1(tx_queue->efx->type->tx_enqueue,
__efx_siena_enqueue_skb, tx_queue, skb);
}
int efx_siena_setup_tc(struct net_device *net_dev, enum tc_setup_type type,
void *type_data);
/* RX */
void __efx_siena_rx_packet(struct efx_channel *channel);
void efx_siena_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_siena_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 128 U
#define EFX_TXQ_MIN_ENT(efx) (2 * efx_siena_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_siena_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_siena_ethtool_ops;
/* Global */
unsigned int efx_siena_usecs_to_ticks(struct efx_nic *efx, unsigned int usecs);
int efx_siena_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_siena_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_siena_update_sw_stats(struct efx_nic *efx, u64 *stats);
/* MTD */
#ifdef CONFIG_SFC_SIENA_MTD
int efx_siena_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_siena_mtd_rename(struct efx_nic *efx);
void efx_siena_mtd_remove(struct efx_nic *efx);
#else
static inline int efx_mtd_probe(struct efx_nic *efx) { return 0 ; }
static inline void efx_siena_mtd_rename(struct efx_nic *efx) {}
static inline void efx_siena_mtd_remove(struct efx_nic *efx) {}
#endif
#ifdef CONFIG_SFC_SIENA_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_siena_xdp_tx_buffers(struct efx_nic *efx, int n,
struct xdp_frame **xdpfs, bool flush);
#endif /* EFX_EFX_H */
Messung V0.5 in Prozent C=92 H=100 G=95
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-03)
¤
*© Formatika GbR, Deutschland
2026-10-10
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