1018825a95
Because linux/err.h is unreferenced in smc_loopback.h file, so remove it. Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: D. Wythe <alibuda@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Shared Memory Communications Direct over loopback-ism device.
|
|
*
|
|
* SMC-D loopback-ism device structure definitions.
|
|
*
|
|
* Copyright (c) 2024, Alibaba Inc.
|
|
*
|
|
* Author: Wen Gu <guwen@linux.alibaba.com>
|
|
* Tony Lu <tonylu@linux.alibaba.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef _SMC_LOOPBACK_H
|
|
#define _SMC_LOOPBACK_H
|
|
|
|
#include <linux/device.h>
|
|
#include <net/smc.h>
|
|
|
|
#if IS_ENABLED(CONFIG_SMC_LO)
|
|
#define SMC_LO_MAX_DMBS 5000
|
|
#define SMC_LO_DMBS_HASH_BITS 12
|
|
#define SMC_LO_RESERVED_CHID 0xFFFF
|
|
|
|
struct smc_lo_dmb_node {
|
|
struct hlist_node list;
|
|
u64 token;
|
|
u32 len;
|
|
u32 sba_idx;
|
|
void *cpu_addr;
|
|
dma_addr_t dma_addr;
|
|
refcount_t refcnt;
|
|
};
|
|
|
|
struct smc_lo_dev {
|
|
struct smcd_dev *smcd;
|
|
struct device dev;
|
|
u16 chid;
|
|
struct smcd_gid local_gid;
|
|
atomic_t dmb_cnt;
|
|
rwlock_t dmb_ht_lock;
|
|
DECLARE_BITMAP(sba_idx_mask, SMC_LO_MAX_DMBS);
|
|
DECLARE_HASHTABLE(dmb_ht, SMC_LO_DMBS_HASH_BITS);
|
|
wait_queue_head_t ldev_release;
|
|
};
|
|
|
|
int smc_loopback_init(void);
|
|
void smc_loopback_exit(void);
|
|
#else
|
|
static inline int smc_loopback_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void smc_loopback_exit(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SMC_LOOPBACK_H */
|