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| author | Paolo Abeni <pabeni@redhat.com> | 2020-06-29 22:26:24 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-29 17:29:38 -0700 |
| commit | 76660afbb7a1ac6bef0be34c4c6e76d7e07b74d7 (patch) | |
| tree | f68c5ed74955d0e8a67cd4b787d7483829647812 /net | |
| parent | fa68018dc45e3faee9d866d5dc484d141e8f1093 (diff) | |
| download | linux-76660afbb7a1ac6bef0be34c4c6e76d7e07b74d7.tar.gz linux-76660afbb7a1ac6bef0be34c4c6e76d7e07b74d7.tar.bz2 linux-76660afbb7a1ac6bef0be34c4c6e76d7e07b74d7.zip | |
mptcp: __mptcp_tcp_fallback() returns a struct sock
Currently __mptcp_tcp_fallback() always return NULL
on incoming connections, because MPTCP does not create
the additional socket for the first subflow.
Since the previous commit no __mptcp_tcp_fallback()
caller needs a struct socket, so let __mptcp_tcp_fallback()
return the first subflow sock and cope correctly even with
incoming connections.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mptcp/protocol.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index ad619bda71cc..f2b2bd37e371 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -76,14 +76,14 @@ static bool mptcp_is_tcpsk(struct sock *sk) return false; } -static struct socket *__mptcp_tcp_fallback(struct mptcp_sock *msk) +static struct sock *__mptcp_tcp_fallback(struct mptcp_sock *msk) { sock_owned_by_me((const struct sock *)msk); if (likely(!__mptcp_check_fallback(msk))) return NULL; - return msk->subflow; + return msk->first; } static int __mptcp_socket_create(struct mptcp_sock *msk) @@ -1498,7 +1498,7 @@ static int mptcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen) { struct mptcp_sock *msk = mptcp_sk(sk); - struct socket *ssock; + struct sock *ssk; pr_debug("msk=%p", msk); @@ -1509,11 +1509,10 @@ static int mptcp_setsockopt(struct sock *sk, int level, int optname, * to the one remaining subflow. */ lock_sock(sk); - ssock = __mptcp_tcp_fallback(msk); + ssk = __mptcp_tcp_fallback(msk); release_sock(sk); - if (ssock) - return tcp_setsockopt(ssock->sk, level, optname, optval, - optlen); + if (ssk) + return tcp_setsockopt(ssk, level, optname, optval, optlen); return -EOPNOTSUPP; } @@ -1522,7 +1521,7 @@ static int mptcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *option) { struct mptcp_sock *msk = mptcp_sk(sk); - struct socket *ssock; + struct sock *ssk; pr_debug("msk=%p", msk); @@ -1533,11 +1532,10 @@ static int mptcp_getsockopt(struct sock *sk, int level, int optname, * to the one remaining subflow. */ lock_sock(sk); - ssock = __mptcp_tcp_fallback(msk); + ssk = __mptcp_tcp_fallback(msk); release_sock(sk); - if (ssock) - return tcp_getsockopt(ssock->sk, level, optname, optval, - option); + if (ssk) + return tcp_getsockopt(ssk, level, optname, optval, option); return -EOPNOTSUPP; } |