diff options
Diffstat (limited to 'net/tipc/port.c')
| -rw-r--r-- | net/tipc/port.c | 72 |
1 files changed, 54 insertions, 18 deletions
diff --git a/net/tipc/port.c b/net/tipc/port.c index d91efc69e6f9..94d2904cce66 100644 --- a/net/tipc/port.c +++ b/net/tipc/port.c @@ -116,13 +116,13 @@ int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, ibuf = skb_copy(buf, GFP_ATOMIC); if (ibuf == NULL) { tipc_port_list_free(&dports); - buf_discard(buf); + kfree_skb(buf); return -ENOMEM; } } res = tipc_bclink_send_msg(buf); if ((res < 0) && (dports.count != 0)) - buf_discard(ibuf); + kfree_skb(ibuf); } else { ibuf = buf; } @@ -187,7 +187,7 @@ void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp) } } exit: - buf_discard(buf); + kfree_skb(buf); tipc_port_list_free(dp); } @@ -400,15 +400,16 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err) /* send self-abort message when rejecting on a connected port */ if (msg_connected(msg)) { - struct sk_buff *abuf = NULL; struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); if (p_ptr) { + struct sk_buff *abuf = NULL; + if (p_ptr->connected) abuf = port_build_self_abort_msg(p_ptr, err); tipc_port_unlock(p_ptr); + tipc_net_route_msg(abuf); } - tipc_net_route_msg(abuf); } /* send returned message & dispose of rejected message */ @@ -419,7 +420,7 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err) else tipc_link_send(rbuf, src_node, msg_link_selector(rmsg)); exit: - buf_discard(buf); + kfree_skb(buf); return data_sz; } @@ -567,7 +568,7 @@ void tipc_port_recv_proto_msg(struct sk_buff *buf) tipc_port_unlock(p_ptr); exit: tipc_net_route_msg(r_buf); - buf_discard(buf); + kfree_skb(buf); } static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id) @@ -758,7 +759,7 @@ static void port_dispatcher_sigh(void *dummy) } } if (buf) - buf_discard(buf); + kfree_skb(buf); buf = next; continue; err: @@ -812,7 +813,7 @@ err: } } if (buf) - buf_discard(buf); + kfree_skb(buf); buf = next; continue; reject: @@ -1053,8 +1054,6 @@ int tipc_connect2port(u32 ref, struct tipc_portid const *peer) msg = &p_ptr->phdr; msg_set_destnode(msg, peer->node); msg_set_destport(msg, peer->ref); - msg_set_orignode(msg, tipc_own_addr); - msg_set_origport(msg, p_ptr->ref); msg_set_type(msg, TIPC_CONN_MSG); msg_set_lookup_scope(msg, 0); msg_set_hdr_sz(msg, SHORT_H_SIZE); @@ -1132,6 +1131,49 @@ int tipc_shutdown(u32 ref) return tipc_disconnect(ref); } +/** + * tipc_port_recv_msg - receive message from lower layer and deliver to port user + */ + +int tipc_port_recv_msg(struct sk_buff *buf) +{ + struct tipc_port *p_ptr; + struct tipc_msg *msg = buf_msg(buf); + u32 destport = msg_destport(msg); + u32 dsz = msg_data_sz(msg); + u32 err; + + /* forward unresolved named message */ + if (unlikely(!destport)) { + tipc_net_route_msg(buf); + return dsz; + } + + /* validate destination & pass to port, otherwise reject message */ + p_ptr = tipc_port_lock(destport); + if (likely(p_ptr)) { + if (likely(p_ptr->connected)) { + if ((unlikely(msg_origport(msg) != + tipc_peer_port(p_ptr))) || + (unlikely(msg_orignode(msg) != + tipc_peer_node(p_ptr))) || + (unlikely(!msg_connected(msg)))) { + err = TIPC_ERR_NO_PORT; + tipc_port_unlock(p_ptr); + goto reject; + } + } + err = p_ptr->dispatcher(p_ptr, buf); + tipc_port_unlock(p_ptr); + if (likely(!err)) + return dsz; + } else { + err = TIPC_ERR_NO_PORT; + } +reject: + return tipc_reject_msg(buf, err); +} + /* * tipc_port_recv_sections(): Concatenate and deliver sectioned * message for this node. @@ -1210,8 +1252,6 @@ int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, msg = &p_ptr->phdr; msg_set_type(msg, TIPC_NAMED_MSG); - msg_set_orignode(msg, tipc_own_addr); - msg_set_origport(msg, ref); msg_set_hdr_sz(msg, NAMED_H_SIZE); msg_set_nametype(msg, name->type); msg_set_nameinst(msg, name->instance); @@ -1220,7 +1260,7 @@ int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, msg_set_destnode(msg, destnode); msg_set_destport(msg, destport); - if (likely(destport)) { + if (likely(destport || destnode)) { if (likely(destnode == tipc_own_addr)) res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, total_len); @@ -1261,8 +1301,6 @@ int tipc_send2port(u32 ref, struct tipc_portid const *dest, msg = &p_ptr->phdr; msg_set_type(msg, TIPC_DIRECT_MSG); msg_set_lookup_scope(msg, 0); - msg_set_orignode(msg, tipc_own_addr); - msg_set_origport(msg, ref); msg_set_destnode(msg, dest->node); msg_set_destport(msg, dest->ref); msg_set_hdr_sz(msg, BASIC_H_SIZE); @@ -1301,8 +1339,6 @@ int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, msg = &p_ptr->phdr; msg_set_type(msg, TIPC_DIRECT_MSG); - msg_set_orignode(msg, tipc_own_addr); - msg_set_origport(msg, ref); msg_set_destnode(msg, dest->node); msg_set_destport(msg, dest->ref); msg_set_hdr_sz(msg, BASIC_H_SIZE); |