mptcp: setsockopt: add SO_INCOMING_CPU

Replicate to all subflows.

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>

diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c
index 1ad6092..7eb6374 100644 (file)
--- a/net/mptcp/sockopt.c
+++ b/net/mptcp/sockopt.c
@@ -101,6 +101,9 @@ static void mptcp_sol_socket_sync_intval(struct mptcp_sock *msk, int optname, in
                                sk_dst_reset(ssk);
                        }
                        break;
+               case SO_INCOMING_CPU:
+                       WRITE_ONCE(ssk->sk_incoming_cpu, val);
+                       break;
                }
 
                subflow->setsockopt_seq = msk->setsockopt_seq;
@@ -125,6 +128,15 @@ static int mptcp_sol_socket_intval(struct mptcp_sock *msk, int optname, int val)
        return 0;
 }
 
+static void mptcp_so_incoming_cpu(struct mptcp_sock *msk, int val)
+{
+       struct sock *sk = (struct sock *)msk;
+
+       WRITE_ONCE(sk->sk_incoming_cpu, val);
+
+       mptcp_sol_socket_sync_intval(msk, SO_INCOMING_CPU, val);
+}
+
 static int mptcp_setsockopt_sol_socket_int(struct mptcp_sock *msk, int optname,
                                           sockptr_t optval, unsigned int optlen)
 {
@@ -145,6 +157,9 @@ static int mptcp_setsockopt_sol_socket_int(struct mptcp_sock *msk, int optname,
        case SO_RCVBUF:
        case SO_RCVBUFFORCE:
                return mptcp_sol_socket_intval(msk, optname, val);
+       case SO_INCOMING_CPU:
+               mptcp_so_incoming_cpu(msk, val);
+               return 0;
        }
 
        return -ENOPROTOOPT;
@@ -230,6 +245,7 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname,
        case SO_RCVBUF:
        case SO_RCVBUFFORCE:
        case SO_MARK:
+       case SO_INCOMING_CPU:
                return mptcp_setsockopt_sol_socket_int(msk, optname, optval, optlen);
        case SO_LINGER:
                return mptcp_setsockopt_sol_socket_linger(msk, optval, optlen);