Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ben Hutchings |
660 |
68.68% |
32 |
58.18% |
| Edward Cree |
78 |
8.12% |
5 |
9.09% |
| Bert Kenward |
49 |
5.10% |
3 |
5.45% |
| Shradha Shah |
47 |
4.89% |
3 |
5.45% |
| Daniel Pieczko |
35 |
3.64% |
1 |
1.82% |
| Peter Dunning |
34 |
3.54% |
1 |
1.82% |
| Charles McLachlan |
21 |
2.19% |
1 |
1.82% |
| Steve Hodgson |
16 |
1.66% |
1 |
1.82% |
| Tom Zhao |
9 |
0.94% |
1 |
1.82% |
| Jiri Pirko |
6 |
0.62% |
2 |
3.64% |
| Thomas Gleixner |
2 |
0.21% |
1 |
1.82% |
| David S. Miller |
1 |
0.10% |
1 |
1.82% |
| Alex Maftei (amaftei) |
1 |
0.10% |
1 |
1.82% |
| John Fastabend |
1 |
0.10% |
1 |
1.82% |
| Stephen Hemminger |
1 |
0.10% |
1 |
1.82% |
| Total |
961 |
|
55 |
|
/* 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);
}
#define EFX_MAX_DMAQ_SIZE 4096UL
#define EFX_DEFAULT_DMAQ_SIZE 1024UL
#define EFX_MIN_DMAQ_SIZE 512UL
#define EFX_MAX_EVQ_SIZE 16384UL
#define EFX_MIN_EVQ_SIZE 512UL
/* 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);
}
#ifdef CONFIG_RFS_ACCEL
int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
u16 rxq_index, u32 flow_id);
bool __efx_filter_rfs_expire(struct efx_channel *channel, unsigned int quota);
#endif
/* 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);
/* Dummy PHY ops for PHY drivers */
int efx_port_dummy_op_int(struct efx_nic *efx);
void efx_port_dummy_op_void(struct efx_nic *efx);
/* 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_schedule_channel(struct efx_channel *channel)
{
netif_vdbg(channel->efx, intr, channel->efx->net_dev,
"channel %d scheduling NAPI poll on CPU%d\n",
channel->channel, raw_smp_processor_id());
napi_schedule(&channel->napi_str);
}
static inline void efx_schedule_channel_irq(struct efx_channel *channel)
{
channel->event_test_cpu = raw_smp_processor_id();
efx_schedule_channel(channel);
}
void efx_link_clear_advertising(struct efx_nic *efx);
void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
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 */