diff options
| author | Florian Westphal <fw@strlen.de> | 2021-04-16 02:44:56 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-17 01:23:10 +0300 |
| commit | 5d0a6bc82d38d773c20b44aa1b9f312c4294b594 (patch) | |
| tree | 38a3193aa1434150a94dcb21ab286ea8b1cc00f1 /net/mptcp | |
| parent | 1b3e7ede1365a24db1b4fd837e58a595f52fa4ad (diff) | |
| download | linux-5d0a6bc82d38d773c20b44aa1b9f312c4294b594.tar.xz | |
mptcp: setsockopt: handle receive/send buffer and device bind
Similar to previous patch: needs to be mirrored to all subflows.
Device bind is simpler: it is only done on the initial (listener) sk.
Acked-by: Paolo Abeni <pabeni@redhat.com>
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')
| -rw-r--r-- | net/mptcp/sockopt.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index 9be4c94ff4d4..bfb9db04d26b 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -85,6 +85,16 @@ static void mptcp_sol_socket_sync_intval(struct mptcp_sock *msk, int optname, in case SO_PRIORITY: ssk->sk_priority = val; break; + case SO_SNDBUF: + case SO_SNDBUFFORCE: + ssk->sk_userlocks |= SOCK_SNDBUF_LOCK; + WRITE_ONCE(ssk->sk_sndbuf, sk->sk_sndbuf); + break; + case SO_RCVBUF: + case SO_RCVBUFFORCE: + ssk->sk_userlocks |= SOCK_RCVBUF_LOCK; + WRITE_ONCE(ssk->sk_rcvbuf, sk->sk_rcvbuf); + break; } subflow->setsockopt_seq = msk->setsockopt_seq; @@ -123,6 +133,10 @@ static int mptcp_setsockopt_sol_socket_int(struct mptcp_sock *msk, int optname, mptcp_sol_socket_sync_intval(msk, optname, val); return 0; case SO_PRIORITY: + case SO_SNDBUF: + case SO_SNDBUFFORCE: + case SO_RCVBUF: + case SO_RCVBUFFORCE: return mptcp_sol_socket_intval(msk, optname, val); } @@ -139,6 +153,8 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname, switch (optname) { case SO_REUSEPORT: case SO_REUSEADDR: + case SO_BINDTODEVICE: + case SO_BINDTOIFINDEX: lock_sock(sk); ssock = __mptcp_nmpc_socket(msk); if (!ssock) { @@ -152,11 +168,19 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname, sk->sk_reuseport = ssock->sk->sk_reuseport; else if (optname == SO_REUSEADDR) sk->sk_reuse = ssock->sk->sk_reuse; + else if (optname == SO_BINDTODEVICE) + sk->sk_bound_dev_if = ssock->sk->sk_bound_dev_if; + else if (optname == SO_BINDTOIFINDEX) + sk->sk_bound_dev_if = ssock->sk->sk_bound_dev_if; } release_sock(sk); return ret; case SO_KEEPALIVE: case SO_PRIORITY: + case SO_SNDBUF: + case SO_SNDBUFFORCE: + case SO_RCVBUF: + case SO_RCVBUFFORCE: return mptcp_setsockopt_sol_socket_int(msk, optname, optval, optlen); } @@ -460,6 +484,7 @@ int mptcp_getsockopt(struct sock *sk, int level, int optname, static void sync_socket_options(struct mptcp_sock *msk, struct sock *ssk) { + static const unsigned int tx_rx_locks = SOCK_RCVBUF_LOCK | SOCK_SNDBUF_LOCK; struct sock *sk = (struct sock *)msk; if (ssk->sk_prot->keepalive) { @@ -470,6 +495,33 @@ static void sync_socket_options(struct mptcp_sock *msk, struct sock *ssk) } ssk->sk_priority = sk->sk_priority; + ssk->sk_bound_dev_if = sk->sk_bound_dev_if; + ssk->sk_incoming_cpu = sk->sk_incoming_cpu; + + if (sk->sk_userlocks & tx_rx_locks) { + ssk->sk_userlocks |= sk->sk_userlocks & tx_rx_locks; + if (sk->sk_userlocks & SOCK_SNDBUF_LOCK) + WRITE_ONCE(ssk->sk_sndbuf, sk->sk_sndbuf); + if (sk->sk_userlocks & SOCK_RCVBUF_LOCK) + WRITE_ONCE(ssk->sk_rcvbuf, sk->sk_rcvbuf); + } + + if (sock_flag(sk, SOCK_LINGER)) { + ssk->sk_lingertime = sk->sk_lingertime; + sock_set_flag(ssk, SOCK_LINGER); + } else { + sock_reset_flag(ssk, SOCK_LINGER); + } + + if (sk->sk_mark != ssk->sk_mark) { + ssk->sk_mark = sk->sk_mark; + sk_dst_reset(ssk); + } + + sock_valbool_flag(ssk, SOCK_DBG, sock_flag(sk, SOCK_DBG)); + + if (inet_csk(sk)->icsk_ca_ops != inet_csk(ssk)->icsk_ca_ops) + tcp_set_congestion_control(ssk, inet_csk(sk)->icsk_ca_ops->name, false, true); } static void __mptcp_sockopt_sync(struct mptcp_sock *msk, struct sock *ssk) |