diff options
Diffstat (limited to 'net/tipc/socket.c')
| -rw-r--r-- | net/tipc/socket.c | 48 |
1 files changed, 36 insertions, 12 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 0a2eac309177..50145c95ac96 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -201,6 +201,11 @@ static bool tsk_conn_cong(struct tipc_sock *tsk) return tsk->snt_unacked > tsk->snd_win; } +static u16 tsk_blocks(int len) +{ + return ((len / FLOWCTL_BLK_SZ) + 1); +} + /* tsk_blocks(): translate a buffer size in bytes to number of * advertisable blocks, taking into account the ratio truesize(len)/len * We can trust that this ratio is always < 4 for len >= FLOWCTL_BLK_SZ @@ -831,6 +836,7 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m, struct tipc_group *grp = tsk->group; struct tipc_nlist *dsts = tipc_group_dests(grp); struct tipc_mc_method *method = &tsk->mc_method; + int blks = tsk_blocks(MCAST_H_SIZE + dlen); struct tipc_msg *hdr = &tsk->phdr; int mtu = tipc_bcast_get_mtu(net); struct sk_buff_head pkts; @@ -839,14 +845,15 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m, if (!dsts->local && !dsts->remote) return -EHOSTUNREACH; - /* Block or return if any destination link is congested */ - rc = tipc_wait_for_cond(sock, &timeout, !tsk->cong_link_cnt); + /* Block or return if any destination link or member is congested */ + rc = tipc_wait_for_cond(sock, &timeout, !tsk->cong_link_cnt && + !tipc_group_bc_cong(grp, blks)); if (unlikely(rc)) return rc; /* Complete message header */ msg_set_type(hdr, TIPC_GRP_BCAST_MSG); - msg_set_hdr_sz(hdr, MCAST_H_SIZE); + msg_set_hdr_sz(hdr, GROUP_H_SIZE); msg_set_destport(hdr, 0); msg_set_destnode(hdr, 0); msg_set_nameinst(hdr, 0); @@ -864,9 +871,8 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m, if (unlikely(rc)) return rc; - /* Update broadcast sequence number */ - tipc_group_update_bc_members(tsk->group); - + /* Update broadcast sequence number and send windows */ + tipc_group_update_bc_members(tsk->group, blks); return dlen; } @@ -1024,7 +1030,7 @@ static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dlen) if (unlikely(dlen > TIPC_MAX_USER_MSG_SIZE)) return -EMSGSIZE; - if (unlikely(grp)) + if (unlikely(grp && !dest)) return tipc_send_group_bcast(sock, m, dlen, timeout); if (unlikely(!dest)) { @@ -1420,6 +1426,7 @@ static int tipc_recvmsg(struct socket *sock, struct msghdr *m, bool connected = !tipc_sk_type_connectionless(sk); struct tipc_sock *tsk = tipc_sk(sk); int rc, err, hlen, dlen, copy; + struct sk_buff_head xmitq; struct tipc_msg *hdr; struct sk_buff *skb; bool grp_evt; @@ -1436,8 +1443,8 @@ static int tipc_recvmsg(struct socket *sock, struct msghdr *m, } timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); + /* Step rcv queue to first msg with data or error; wait if necessary */ do { - /* Look at first msg in receive queue; wait if necessary */ rc = tipc_wait_for_rcvmsg(sock, &timeout); if (unlikely(rc)) goto exit; @@ -1485,12 +1492,21 @@ static int tipc_recvmsg(struct socket *sock, struct msghdr *m, if (unlikely(flags & MSG_PEEK)) goto exit; + /* Send group flow control advertisement when applicable */ + if (tsk->group && msg_in_group(hdr) && !grp_evt) { + skb_queue_head_init(&xmitq); + tipc_group_update_rcv_win(tsk->group, tsk_blocks(hlen + dlen), + msg_orignode(hdr), msg_origport(hdr), + &xmitq); + tipc_node_distr_xmit(sock_net(sk), &xmitq); + } + tsk_advance_rx_queue(sk); if (likely(!connected)) goto exit; - /* Send connection flow control ack when applicable */ + /* Send connection flow control advertisement when applicable */ tsk->rcv_unacked += tsk_inc(tsk, hlen + dlen); if (tsk->rcv_unacked >= tsk->rcv_win / TIPC_ACK_RATE) tipc_sk_send_ack(tsk); @@ -1650,6 +1666,7 @@ static void tipc_sk_proto_rcv(struct sock *sk, struct tipc_sock *tsk = tipc_sk(sk); struct tipc_msg *hdr = buf_msg(skb); struct tipc_group *grp = tsk->group; + bool wakeup = false; switch (msg_user(hdr)) { case CONN_MANAGER: @@ -1658,19 +1675,23 @@ static void tipc_sk_proto_rcv(struct sock *sk, case SOCK_WAKEUP: tipc_dest_del(&tsk->cong_links, msg_orignode(hdr), 0); tsk->cong_link_cnt--; - sk->sk_write_space(sk); + wakeup = true; break; case GROUP_PROTOCOL: - tipc_group_proto_rcv(grp, hdr, inputq, xmitq); + tipc_group_proto_rcv(grp, &wakeup, hdr, inputq, xmitq); break; case TOP_SRV: - tipc_group_member_evt(tsk->group, skb, inputq, xmitq); + tipc_group_member_evt(tsk->group, &wakeup, &sk->sk_rcvbuf, + skb, inputq, xmitq); skb = NULL; break; default: break; } + if (wakeup) + sk->sk_write_space(sk); + kfree_skb(skb); } @@ -1785,6 +1806,9 @@ static unsigned int rcvbuf_limit(struct sock *sk, struct sk_buff *skb) struct tipc_sock *tsk = tipc_sk(sk); struct tipc_msg *hdr = buf_msg(skb); + if (unlikely(msg_in_group(hdr))) + return sk->sk_rcvbuf; + if (unlikely(!msg_connected(hdr))) return sk->sk_rcvbuf << msg_importance(hdr); |