diff options
| author | Florian Westphal <fw@strlen.de> | 2021-11-19 12:41:36 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-20 14:11:00 +0000 |
| commit | c9406a23c1161c3a9a672d055ec840b00d730a6f (patch) | |
| tree | 0a8c74f196dbe48a517405854b5ca45871ee834a /net/mptcp/sockopt.c | |
| parent | ffcacff87cd65dc09b97982acf3a771713983a28 (diff) | |
mptcp: sockopt: add SOL_IP freebind & transparent options
These options also need to be set before bind, so do the sync of msk to
new ssk socket a bit earlier.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp/sockopt.c')
| -rw-r--r-- | net/mptcp/sockopt.c | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index b452571e8d9b..fb43e145cb57 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -390,6 +390,8 @@ static int mptcp_setsockopt_v6(struct mptcp_sock *msk, int optname, switch (optname) { case IPV6_V6ONLY: + case IPV6_TRANSPARENT: + case IPV6_FREEBIND: lock_sock(sk); ssock = __mptcp_nmpc_socket(msk); if (!ssock) { @@ -398,8 +400,24 @@ static int mptcp_setsockopt_v6(struct mptcp_sock *msk, int optname, } ret = tcp_setsockopt(ssock->sk, SOL_IPV6, optname, optval, optlen); - if (ret == 0) + if (ret != 0) { + release_sock(sk); + return ret; + } + + sockopt_seq_inc(msk); + + switch (optname) { + case IPV6_V6ONLY: sk->sk_ipv6only = ssock->sk->sk_ipv6only; + break; + case IPV6_TRANSPARENT: + inet_sk(sk)->transparent = inet_sk(ssock->sk)->transparent; + break; + case IPV6_FREEBIND: + inet_sk(sk)->freebind = inet_sk(ssock->sk)->freebind; + break; + } release_sock(sk); break; @@ -598,6 +616,46 @@ static int mptcp_setsockopt_sol_tcp_congestion(struct mptcp_sock *msk, sockptr_t return ret; } +static int mptcp_setsockopt_sol_ip_set_transparent(struct mptcp_sock *msk, int optname, + sockptr_t optval, unsigned int optlen) +{ + struct sock *sk = (struct sock *)msk; + struct inet_sock *issk; + struct socket *ssock; + int err; + + err = ip_setsockopt(sk, SOL_IP, optname, optval, optlen); + if (err != 0) + return err; + + lock_sock(sk); + + ssock = __mptcp_nmpc_socket(msk); + if (!ssock) { + release_sock(sk); + return -EINVAL; + } + + issk = inet_sk(ssock->sk); + + switch (optname) { + case IP_FREEBIND: + issk->freebind = inet_sk(sk)->freebind; + break; + case IP_TRANSPARENT: + issk->transparent = inet_sk(sk)->transparent; + break; + default: + release_sock(sk); + WARN_ON_ONCE(1); + return -EOPNOTSUPP; + } + + sockopt_seq_inc(msk); + release_sock(sk); + return 0; +} + static int mptcp_setsockopt_v4_set_tos(struct mptcp_sock *msk, int optname, sockptr_t optval, unsigned int optlen) { @@ -627,6 +685,9 @@ static int mptcp_setsockopt_v4(struct mptcp_sock *msk, int optname, sockptr_t optval, unsigned int optlen) { switch (optname) { + case IP_FREEBIND: + case IP_TRANSPARENT: + return mptcp_setsockopt_sol_ip_set_transparent(msk, optname, optval, optlen); case IP_TOS: return mptcp_setsockopt_v4_set_tos(msk, optname, optval, optlen); } @@ -1068,6 +1129,9 @@ static void sync_socket_options(struct mptcp_sock *msk, struct sock *ssk) if (inet_csk(sk)->icsk_ca_ops != inet_csk(ssk)->icsk_ca_ops) tcp_set_congestion_control(ssk, msk->ca_name, false, true); + + inet_sk(ssk)->transparent = inet_sk(sk)->transparent; + inet_sk(ssk)->freebind = inet_sk(sk)->freebind; } static void __mptcp_sockopt_sync(struct mptcp_sock *msk, struct sock *ssk) |