diff options
| author | Matthieu Baerts <matthieu.baerts@tessares.net> | 2021-05-28 02:54:29 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-05-28 23:59:16 +0300 |
| commit | 804c72eeecd2cd38567b64f868cc8c63202cf1a2 (patch) | |
| tree | 20fd7d39deaebf9a3830ef666dec6d10fea88735 /net/mptcp | |
| parent | eb5fb629f56da3f40f496c807da44a7ce7644779 (diff) | |
| download | linux-804c72eeecd2cd38567b64f868cc8c63202cf1a2.tar.xz | |
mptcp: support SYSCTL only if enabled
Since the introduction of the sysctl support in MPTCP with
commit 784325e9f037 ("mptcp: new sysctl to control the activation per NS"),
we don't check CONFIG_SYSCTL.
Until now, that was not an issue: the register and unregister functions
were replaced by NO-OP one if SYSCTL was not enabled in the config. The
only thing we could have avoid is not to reserve memory for the table
but that's for the moment only a small table per net-ns.
But the following commit is going to use SYSCTL_ZERO and SYSCTL_ONE
which are not be defined if SYSCTL is not enabled in the config. This
causes 'undefined reference' errors from the linker.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/ctrl.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/net/mptcp/ctrl.c b/net/mptcp/ctrl.c index 96ba616f59bf..a3b15ed60b77 100644 --- a/net/mptcp/ctrl.c +++ b/net/mptcp/ctrl.c @@ -4,7 +4,9 @@ * Copyright (c) 2019, Tessares SA. */ +#ifdef CONFIG_SYSCTL #include <linux/sysctl.h> +#endif #include <net/net_namespace.h> #include <net/netns/generic.h> @@ -15,7 +17,9 @@ static int mptcp_pernet_id; struct mptcp_pernet { +#ifdef CONFIG_SYSCTL struct ctl_table_header *ctl_table_hdr; +#endif int mptcp_enabled; unsigned int add_addr_timeout; @@ -36,6 +40,13 @@ unsigned int mptcp_get_add_addr_timeout(struct net *net) return mptcp_get_pernet(net)->add_addr_timeout; } +static void mptcp_pernet_set_defaults(struct mptcp_pernet *pernet) +{ + pernet->mptcp_enabled = 1; + pernet->add_addr_timeout = TCP_RTO_MAX; +} + +#ifdef CONFIG_SYSCTL static struct ctl_table mptcp_sysctl_table[] = { { .procname = "enabled", @@ -55,12 +66,6 @@ static struct ctl_table mptcp_sysctl_table[] = { {} }; -static void mptcp_pernet_set_defaults(struct mptcp_pernet *pernet) -{ - pernet->mptcp_enabled = 1; - pernet->add_addr_timeout = TCP_RTO_MAX; -} - static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet) { struct ctl_table_header *hdr; @@ -100,6 +105,17 @@ static void mptcp_pernet_del_table(struct mptcp_pernet *pernet) kfree(table); } +#else + +static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet) +{ + return 0; +} + +static void mptcp_pernet_del_table(struct mptcp_pernet *pernet) {} + +#endif /* CONFIG_SYSCTL */ + static int __net_init mptcp_net_init(struct net *net) { struct mptcp_pernet *pernet = mptcp_get_pernet(net); |