diff options
Diffstat (limited to 'net/mptcp/ctrl.c')
| -rw-r--r-- | net/mptcp/ctrl.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/mptcp/ctrl.c b/net/mptcp/ctrl.c index 4d8b31f32eb5..d9290c5bb6c7 100644 --- a/net/mptcp/ctrl.c +++ b/net/mptcp/ctrl.c @@ -253,6 +253,24 @@ static int proc_pm_type(const struct ctl_table *ctl, int write, return ret; } +static int proc_available_path_managers(const struct ctl_table *ctl, + int write, void *buffer, + size_t *lenp, loff_t *ppos) +{ + struct ctl_table tbl = { .maxlen = MPTCP_PM_BUF_MAX, }; + int ret; + + tbl.data = kmalloc(tbl.maxlen, GFP_USER); + if (!tbl.data) + return -ENOMEM; + + mptcp_pm_get_available(tbl.data, MPTCP_PM_BUF_MAX); + ret = proc_dostring(&tbl, write, buffer, lenp, ppos); + kfree(tbl.data); + + return ret; +} + static struct ctl_table mptcp_sysctl_table[] = { { .procname = "enabled", @@ -338,6 +356,12 @@ static struct ctl_table mptcp_sysctl_table[] = { .mode = 0644, .proc_handler = proc_path_manager, }, + { + .procname = "available_path_managers", + .maxlen = MPTCP_PM_BUF_MAX, + .mode = 0444, + .proc_handler = proc_available_path_managers, + }, }; static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet) @@ -364,6 +388,7 @@ static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet) table[9].data = &pernet->blackhole_timeout; table[10].data = &pernet->syn_retrans_before_tcp_fallback; table[11].data = &pernet->path_manager; + /* table[12] is for available_path_managers which is read-only info */ hdr = register_net_sysctl_sz(net, MPTCP_SYSCTL_PATH, table, ARRAY_SIZE(mptcp_sysctl_table)); |