From: Kishen Maloor kishen.maloor@intel.com

This change updates mptcp_pm_nl_create_listen_socket() to create listening sockets bound to IPv6 addresses (where IPv6 is supported).

Cc: stable@vger.kernel.org Fixes: 1729cf186d8a ("mptcp: create the listening socket for new port") Acked-by: Geliang Tang geliang.tang@suse.com Signed-off-by: Kishen Maloor kishen.maloor@intel.com Signed-off-by: Mat Martineau mathew.j.martineau@linux.intel.com --- net/mptcp/pm_netlink.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 782b1d452269..356f596e2032 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -925,6 +925,7 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, static int mptcp_pm_nl_create_listen_socket(struct sock *sk, struct mptcp_pm_addr_entry *entry) { + int addrlen = sizeof(struct sockaddr_in); struct sockaddr_storage addr; struct mptcp_sock *msk; struct socket *ssock; @@ -949,8 +950,11 @@ static int mptcp_pm_nl_create_listen_socket(struct sock *sk, }

mptcp_info2sockaddr(&entry->addr, &addr, entry->addr.family); - err = kernel_bind(ssock, (struct sockaddr *)&addr, - sizeof(struct sockaddr_in)); +#if IS_ENABLED(CONFIG_MPTCP_IPV6) + if (entry->addr.family == AF_INET6) + addrlen = sizeof(struct sockaddr_in6); +#endif + err = kernel_bind(ssock, (struct sockaddr *)&addr, addrlen); if (err) { pr_warn("kernel_bind error, err=%d", err); goto out;