mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
3.2 KiB
118 lines
3.2 KiB
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ |
|
/* |
|
* Copyright(c) 2020 Intel Corporation. |
|
* |
|
*/ |
|
|
|
#ifndef HFI1_NETDEV_H |
|
#define HFI1_NETDEV_H |
|
|
|
#include "hfi.h" |
|
|
|
#include <linux/netdevice.h> |
|
#include <linux/xarray.h> |
|
|
|
/** |
|
* struct hfi1_netdev_rxq - Receive Queue for HFI |
|
* dummy netdev. Both IPoIB and VNIC netdevices will be working on |
|
* top of this device. |
|
* @napi: napi object |
|
* @priv: ptr to netdev_priv |
|
* @rcd: ptr to receive context data |
|
*/ |
|
struct hfi1_netdev_rxq { |
|
struct napi_struct napi; |
|
struct hfi1_netdev_priv *priv; |
|
struct hfi1_ctxtdata *rcd; |
|
}; |
|
|
|
/* |
|
* Number of netdev contexts used. Ensure it is less than or equal to |
|
* max queues supported by VNIC (HFI1_VNIC_MAX_QUEUE). |
|
*/ |
|
#define HFI1_MAX_NETDEV_CTXTS 8 |
|
|
|
/* Number of NETDEV RSM entries */ |
|
#define NUM_NETDEV_MAP_ENTRIES HFI1_MAX_NETDEV_CTXTS |
|
|
|
/** |
|
* struct hfi1_netdev_priv: data required to setup and run HFI netdev. |
|
* @dd: hfi1_devdata |
|
* @rxq: pointer to dummy netdev receive queues. |
|
* @num_rx_q: number of receive queues |
|
* @rmt_index: first free index in RMT Array |
|
* @msix_start: first free MSI-X interrupt vector. |
|
* @dev_tbl: netdev table for unique identifier VNIC and IPoIb VLANs. |
|
* @enabled: atomic counter of netdevs enabling receive queues. |
|
* When 0 NAPI will be disabled. |
|
* @netdevs: atomic counter of netdevs using dummy netdev. |
|
* When 0 receive queues will be freed. |
|
*/ |
|
struct hfi1_netdev_priv { |
|
struct hfi1_devdata *dd; |
|
struct hfi1_netdev_rxq *rxq; |
|
int num_rx_q; |
|
int rmt_start; |
|
struct xarray dev_tbl; |
|
/* count of enabled napi polls */ |
|
atomic_t enabled; |
|
/* count of netdevs on top */ |
|
atomic_t netdevs; |
|
}; |
|
|
|
static inline |
|
struct hfi1_netdev_priv *hfi1_netdev_priv(struct net_device *dev) |
|
{ |
|
return (struct hfi1_netdev_priv *)&dev[1]; |
|
} |
|
|
|
static inline |
|
int hfi1_netdev_ctxt_count(struct hfi1_devdata *dd) |
|
{ |
|
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev); |
|
|
|
return priv->num_rx_q; |
|
} |
|
|
|
static inline |
|
struct hfi1_ctxtdata *hfi1_netdev_get_ctxt(struct hfi1_devdata *dd, int ctxt) |
|
{ |
|
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev); |
|
|
|
return priv->rxq[ctxt].rcd; |
|
} |
|
|
|
static inline |
|
int hfi1_netdev_get_free_rmt_idx(struct hfi1_devdata *dd) |
|
{ |
|
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev); |
|
|
|
return priv->rmt_start; |
|
} |
|
|
|
static inline |
|
void hfi1_netdev_set_free_rmt_idx(struct hfi1_devdata *dd, int rmt_idx) |
|
{ |
|
struct hfi1_netdev_priv *priv = hfi1_netdev_priv(dd->dummy_netdev); |
|
|
|
priv->rmt_start = rmt_idx; |
|
} |
|
|
|
u32 hfi1_num_netdev_contexts(struct hfi1_devdata *dd, u32 available_contexts, |
|
struct cpumask *cpu_mask); |
|
|
|
void hfi1_netdev_enable_queues(struct hfi1_devdata *dd); |
|
void hfi1_netdev_disable_queues(struct hfi1_devdata *dd); |
|
int hfi1_netdev_rx_init(struct hfi1_devdata *dd); |
|
int hfi1_netdev_rx_destroy(struct hfi1_devdata *dd); |
|
int hfi1_netdev_alloc(struct hfi1_devdata *dd); |
|
void hfi1_netdev_free(struct hfi1_devdata *dd); |
|
int hfi1_netdev_add_data(struct hfi1_devdata *dd, int id, void *data); |
|
void *hfi1_netdev_remove_data(struct hfi1_devdata *dd, int id); |
|
void *hfi1_netdev_get_data(struct hfi1_devdata *dd, int id); |
|
void *hfi1_netdev_get_first_data(struct hfi1_devdata *dd, int *start_id); |
|
|
|
/* chip.c */ |
|
int hfi1_netdev_rx_napi(struct napi_struct *napi, int budget); |
|
|
|
#endif /* HFI1_NETDEV_H */
|
|
|