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Diffstat (limited to 'net/mptcp/ctrl.c')
-rw-r--r--net/mptcp/ctrl.c32
1 files changed, 28 insertions, 4 deletions
diff --git a/net/mptcp/ctrl.c b/net/mptcp/ctrl.c
index 2963ba84e2..98b1dd498f 100644
--- a/net/mptcp/ctrl.c
+++ b/net/mptcp/ctrl.c
@@ -92,7 +92,7 @@ static void mptcp_pernet_set_defaults(struct mptcp_pernet *pernet)
pernet->allow_join_initial_addr_port = 1;
pernet->stale_loss_cnt = 4;
pernet->pm_type = MPTCP_PM_TYPE_KERNEL;
- strcpy(pernet->scheduler, "default");
+ strscpy(pernet->scheduler, "default", sizeof(pernet->scheduler));
}
#ifdef CONFIG_SYSCTL
@@ -133,6 +133,24 @@ static int proc_scheduler(struct ctl_table *ctl, int write,
return ret;
}
+static int proc_available_schedulers(struct ctl_table *ctl,
+ int write, void *buffer,
+ size_t *lenp, loff_t *ppos)
+{
+ struct ctl_table tbl = { .maxlen = MPTCP_SCHED_BUF_MAX, };
+ int ret;
+
+ tbl.data = kmalloc(tbl.maxlen, GFP_USER);
+ if (!tbl.data)
+ return -ENOMEM;
+
+ mptcp_get_available_schedulers(tbl.data, MPTCP_SCHED_BUF_MAX);
+ ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
+ kfree(tbl.data);
+
+ return ret;
+}
+
static struct ctl_table mptcp_sysctl_table[] = {
{
.procname = "enabled",
@@ -188,12 +206,17 @@ static struct ctl_table mptcp_sysctl_table[] = {
.proc_handler = proc_scheduler,
},
{
+ .procname = "available_schedulers",
+ .maxlen = MPTCP_SCHED_BUF_MAX,
+ .mode = 0644,
+ .proc_handler = proc_available_schedulers,
+ },
+ {
.procname = "close_timeout",
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
- {}
};
static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet)
@@ -215,7 +238,8 @@ static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet)
table[4].data = &pernet->stale_loss_cnt;
table[5].data = &pernet->pm_type;
table[6].data = &pernet->scheduler;
- table[7].data = &pernet->close_timeout;
+ /* table[7] is for available_schedulers which is read-only info */
+ table[8].data = &pernet->close_timeout;
hdr = register_net_sysctl_sz(net, MPTCP_SYSCTL_PATH, table,
ARRAY_SIZE(mptcp_sysctl_table));
@@ -235,7 +259,7 @@ err_alloc:
static void mptcp_pernet_del_table(struct mptcp_pernet *pernet)
{
- struct ctl_table *table = pernet->ctl_table_hdr->ctl_table_arg;
+ const struct ctl_table *table = pernet->ctl_table_hdr->ctl_table_arg;
unregister_net_sysctl_table(pernet->ctl_table_hdr);