tcp: annotate tp->rcv_nxt lockless reads

[linux-2.6-block.git] / net / ipv4 / tcp_minisocks.c

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index bb140a5db8c066e57f1018fd47bccd4628def642..adc6ce486a383caad502db05f51cdc7205fe009c 100644 (file)
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -462,6 +462,7 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
        struct tcp_request_sock *treq = tcp_rsk(req);
        struct inet_connection_sock *newicsk;
        struct tcp_sock *oldtp, *newtp;
+       u32 seq;
 
        if (!newsk)
                return NULL;
@@ -475,8 +476,10 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
        /* Now setup tcp_sock */
        newtp->pred_flags = 0;
 
-       newtp->rcv_wup = newtp->copied_seq =
-       newtp->rcv_nxt = treq->rcv_isn + 1;
+       seq = treq->rcv_isn + 1;
+       newtp->rcv_wup = seq;
+       newtp->copied_seq = seq;
+       WRITE_ONCE(newtp->rcv_nxt, seq);
        newtp->segs_in = 1;
 
        newtp->snd_sml = newtp->snd_una =
@@ -541,7 +544,7 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
        newtp->rx_opt.mss_clamp = req->mss;
        tcp_ecn_openreq_child(newtp, req);
        newtp->fastopen_req = NULL;
-       newtp->fastopen_rsk = NULL;
+       RCU_INIT_POINTER(newtp->fastopen_rsk, NULL);
 
        __TCP_INC_STATS(sock_net(sk), TCP_MIB_PASSIVEOPENS);