mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
net/smc: add sysctl interface for SMC
This patch add sysctl interface to support container environment for SMC as we talk in the mail list. Link: https://lore.kernel.org/netdev/20220224020253.GF5443@linux.alibaba.com Co-developed-by: Tony Lu <tonylu@linux.alibaba.com> Signed-off-by: Tony Lu <tonylu@linux.alibaba.com> Signed-off-by: Dust Li <dust.li@linux.alibaba.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
1e385c0824
commit
462791bbfa
|
@ -14,5 +14,8 @@ struct netns_smc {
|
|||
struct smc_stats_rsn *fback_rsn;
|
||||
|
||||
bool limit_smc_hs; /* constraint on handshake */
|
||||
#ifdef CONFIG_SYSCTL
|
||||
struct ctl_table_header *smc_hdr;
|
||||
#endif
|
||||
};
|
||||
#endif
|
||||
|
|
|
@ -4,4 +4,4 @@ obj-$(CONFIG_SMC) += smc.o
|
|||
obj-$(CONFIG_SMC_DIAG) += smc_diag.o
|
||||
smc-y := af_smc.o smc_pnet.o smc_ib.o smc_clc.o smc_core.o smc_wr.o smc_llc.o
|
||||
smc-y += smc_cdc.o smc_tx.o smc_rx.o smc_close.o smc_ism.o smc_netlink.o smc_stats.o
|
||||
smc-y += smc_tracepoint.o
|
||||
smc-y += smc_tracepoint.o smc_sysctl.o
|
||||
|
|
|
@ -51,6 +51,7 @@
|
|||
#include "smc_close.h"
|
||||
#include "smc_stats.h"
|
||||
#include "smc_tracepoint.h"
|
||||
#include "smc_sysctl.h"
|
||||
|
||||
static DEFINE_MUTEX(smc_server_lgr_pending); /* serialize link group
|
||||
* creation on server
|
||||
|
@ -3273,9 +3274,17 @@ static int __init smc_init(void)
|
|||
goto out_sock;
|
||||
}
|
||||
|
||||
rc = smc_sysctl_init();
|
||||
if (rc) {
|
||||
pr_err("%s: sysctl_init fails with %d\n", __func__, rc);
|
||||
goto out_ulp;
|
||||
}
|
||||
|
||||
static_branch_enable(&tcp_have_smc);
|
||||
return 0;
|
||||
|
||||
out_ulp:
|
||||
tcp_unregister_ulp(&smc_ulp_ops);
|
||||
out_sock:
|
||||
sock_unregister(PF_SMC);
|
||||
out_proto6:
|
||||
|
@ -3303,6 +3312,7 @@ static int __init smc_init(void)
|
|||
static void __exit smc_exit(void)
|
||||
{
|
||||
static_branch_disable(&tcp_have_smc);
|
||||
smc_sysctl_exit();
|
||||
tcp_unregister_ulp(&smc_ulp_ops);
|
||||
sock_unregister(PF_SMC);
|
||||
smc_core_exit();
|
||||
|
|
70
net/smc/smc_sysctl.c
Normal file
70
net/smc/smc_sysctl.c
Normal file
|
@ -0,0 +1,70 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Shared Memory Communications over RDMA (SMC-R) and RoCE
|
||||
*
|
||||
* smc_sysctl.c: sysctl interface to SMC subsystem.
|
||||
*
|
||||
* Copyright (c) 2022, Alibaba Inc.
|
||||
*
|
||||
* Author: Tony Lu <tonylu@linux.alibaba.com>
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/sysctl.h>
|
||||
#include <net/net_namespace.h>
|
||||
|
||||
#include "smc_sysctl.h"
|
||||
|
||||
static struct ctl_table smc_table[] = {
|
||||
{ }
|
||||
};
|
||||
|
||||
static __net_init int smc_sysctl_init_net(struct net *net)
|
||||
{
|
||||
struct ctl_table *table;
|
||||
|
||||
table = smc_table;
|
||||
if (!net_eq(net, &init_net)) {
|
||||
int i;
|
||||
|
||||
table = kmemdup(table, sizeof(smc_table), GFP_KERNEL);
|
||||
if (!table)
|
||||
goto err_alloc;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(smc_table) - 1; i++)
|
||||
table[i].data += (void *)net - (void *)&init_net;
|
||||
}
|
||||
|
||||
net->smc.smc_hdr = register_net_sysctl(net, "net/smc", table);
|
||||
if (!net->smc.smc_hdr)
|
||||
goto err_reg;
|
||||
|
||||
return 0;
|
||||
|
||||
err_reg:
|
||||
if (!net_eq(net, &init_net))
|
||||
kfree(table);
|
||||
err_alloc:
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
static __net_exit void smc_sysctl_exit_net(struct net *net)
|
||||
{
|
||||
unregister_net_sysctl_table(net->smc.smc_hdr);
|
||||
}
|
||||
|
||||
static struct pernet_operations smc_sysctl_ops __net_initdata = {
|
||||
.init = smc_sysctl_init_net,
|
||||
.exit = smc_sysctl_exit_net,
|
||||
};
|
||||
|
||||
int __init smc_sysctl_init(void)
|
||||
{
|
||||
return register_pernet_subsys(&smc_sysctl_ops);
|
||||
}
|
||||
|
||||
void smc_sysctl_exit(void)
|
||||
{
|
||||
unregister_pernet_subsys(&smc_sysctl_ops);
|
||||
}
|
32
net/smc/smc_sysctl.h
Normal file
32
net/smc/smc_sysctl.h
Normal file
|
@ -0,0 +1,32 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* Shared Memory Communications over RDMA (SMC-R) and RoCE
|
||||
*
|
||||
* smc_sysctl.c: sysctl interface to SMC subsystem.
|
||||
*
|
||||
* Copyright (c) 2022, Alibaba Inc.
|
||||
*
|
||||
* Author: Tony Lu <tonylu@linux.alibaba.com>
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _SMC_SYSCTL_H
|
||||
#define _SMC_SYSCTL_H
|
||||
|
||||
#ifdef CONFIG_SYSCTL
|
||||
|
||||
int smc_sysctl_init(void);
|
||||
void smc_sysctl_exit(void);
|
||||
|
||||
#else
|
||||
|
||||
int smc_sysctl_init(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
void smc_sysctl_exit(void) { }
|
||||
|
||||
#endif /* CONFIG_SYSCTL */
|
||||
|
||||
#endif /* _SMC_SYSCTL_H */
|
Loading…
Reference in a new issue