6.6-stable review patch. If anyone has any objections, please let me know.
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From: Paolo Abeni pabeni@redhat.com
commit 7f71a337b5152ea0e7bef408d1af53778a919316 upstream.
Most TCP-level socket options get an integer from user space, and set the corresponding field under the msk-level socket lock.
Reduce the code duplication moving such operations in the common code.
Signed-off-by: Paolo Abeni pabeni@redhat.com Reviewed-by: Mat Martineau martineau@kernel.org Signed-off-by: Matthieu Baerts (NGI0) matttbe@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Stable-dep-of: bd11dc4fb969 ("mptcp: fix full TCP keep-alive support") [ Without TCP_NOTSENT_LOWAT support, as it is not in this version, see commit 29b5e5ef8739 ("mptcp: implement TCP_NOTSENT_LOWAT support") ] Signed-off-by: Matthieu Baerts (NGI0) matttbe@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/mptcp/sockopt.c | 61 ++++++++++++++++++++++------------------------------ 1 file changed, 26 insertions(+), 35 deletions(-)
--- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -621,18 +621,11 @@ static int mptcp_setsockopt_sol_tcp_cong return ret; }
-static int mptcp_setsockopt_sol_tcp_cork(struct mptcp_sock *msk, sockptr_t optval, - unsigned int optlen) +static int __mptcp_setsockopt_sol_tcp_cork(struct mptcp_sock *msk, int val) { struct mptcp_subflow_context *subflow; struct sock *sk = (struct sock *)msk; - int val, ret;
- ret = mptcp_get_int_option(msk, optval, optlen, &val); - if (ret) - return ret; - - lock_sock(sk); sockopt_seq_inc(msk); msk->cork = !!val; mptcp_for_each_subflow(msk, subflow) { @@ -644,23 +637,15 @@ static int mptcp_setsockopt_sol_tcp_cork } if (!val) mptcp_check_and_set_pending(sk); - release_sock(sk);
return 0; }
-static int mptcp_setsockopt_sol_tcp_nodelay(struct mptcp_sock *msk, sockptr_t optval, - unsigned int optlen) +static int __mptcp_setsockopt_sol_tcp_nodelay(struct mptcp_sock *msk, int val) { struct mptcp_subflow_context *subflow; struct sock *sk = (struct sock *)msk; - int val, ret; - - ret = mptcp_get_int_option(msk, optval, optlen, &val); - if (ret) - return ret;
- lock_sock(sk); sockopt_seq_inc(msk); msk->nodelay = !!val; mptcp_for_each_subflow(msk, subflow) { @@ -672,8 +657,6 @@ static int mptcp_setsockopt_sol_tcp_node } if (val) mptcp_check_and_set_pending(sk); - release_sock(sk); - return 0; }
@@ -786,25 +769,10 @@ static int mptcp_setsockopt_sol_tcp(stru int ret, val;
switch (optname) { - case TCP_INQ: - ret = mptcp_get_int_option(msk, optval, optlen, &val); - if (ret) - return ret; - if (val < 0 || val > 1) - return -EINVAL; - - lock_sock(sk); - msk->recvmsg_inq = !!val; - release_sock(sk); - return 0; case TCP_ULP: return -EOPNOTSUPP; case TCP_CONGESTION: return mptcp_setsockopt_sol_tcp_congestion(msk, optval, optlen); - case TCP_CORK: - return mptcp_setsockopt_sol_tcp_cork(msk, optval, optlen); - case TCP_NODELAY: - return mptcp_setsockopt_sol_tcp_nodelay(msk, optval, optlen); case TCP_DEFER_ACCEPT: /* See tcp.c: TCP_DEFER_ACCEPT does not fail */ mptcp_setsockopt_first_sf_only(msk, SOL_TCP, optname, optval, optlen); @@ -817,7 +785,30 @@ static int mptcp_setsockopt_sol_tcp(stru optval, optlen); }
- return -EOPNOTSUPP; + ret = mptcp_get_int_option(msk, optval, optlen, &val); + if (ret) + return ret; + + lock_sock(sk); + switch (optname) { + case TCP_INQ: + if (val < 0 || val > 1) + ret = -EINVAL; + else + msk->recvmsg_inq = !!val; + break; + case TCP_CORK: + ret = __mptcp_setsockopt_sol_tcp_cork(msk, val); + break; + case TCP_NODELAY: + ret = __mptcp_setsockopt_sol_tcp_nodelay(msk, val); + break; + default: + ret = -ENOPROTOOPT; + } + + release_sock(sk); + return ret; }
int mptcp_setsockopt(struct sock *sk, int level, int optname,