X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=net%2Ftipc%2Fport.c;h=e70d27ea6578a3138c34761e5bba9414a2bd6af5;hb=e66d90fb4abd0a27ee96f57a32fb561221c4d6ae;hp=f508614ca59b4125fa77e94728057205bf9f8f57;hpb=6e5565f949af1322f8f3d3f43d044645ae448499;p=linux-2.6 diff --git a/net/tipc/port.c b/net/tipc/port.c index f508614ca5..e70d27ea65 100644 --- a/net/tipc/port.c +++ b/net/tipc/port.c @@ -2,7 +2,7 @@ * net/tipc/port.c: TIPC port code * * Copyright (c) 1992-2007, Ericsson AB - * Copyright (c) 2004-2007, Wind River Systems + * Copyright (c) 2004-2008, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -211,12 +211,12 @@ exit: } /** - * tipc_createport_raw - create a native TIPC port + * tipc_createport_raw - create a generic TIPC port * - * Returns local port reference + * Returns pointer to (locked) TIPC port, or NULL if unable to create it */ -u32 tipc_createport_raw(void *usr_handle, +struct tipc_port *tipc_createport_raw(void *usr_handle, u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), void (*wakeup)(struct tipc_port *), const u32 importance) @@ -228,25 +228,21 @@ u32 tipc_createport_raw(void *usr_handle, p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); if (!p_ptr) { warn("Port creation failed, no memory\n"); - return 0; + return NULL; } ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); if (!ref) { warn("Port creation failed, reference table exhausted\n"); kfree(p_ptr); - return 0; + return NULL; } - tipc_port_lock(ref); p_ptr->publ.usr_handle = usr_handle; p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; p_ptr->publ.ref = ref; msg = &p_ptr->publ.phdr; - msg_init(msg, DATA_LOW, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, 0); - msg_set_orignode(msg, tipc_own_addr); - msg_set_prevnode(msg, tipc_own_addr); + msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); msg_set_origport(msg, ref); - msg_set_importance(msg,importance); p_ptr->last_in_seqno = 41; p_ptr->sent = 1; INIT_LIST_HEAD(&p_ptr->wait_list); @@ -261,8 +257,7 @@ u32 tipc_createport_raw(void *usr_handle, INIT_LIST_HEAD(&p_ptr->port_list); list_add_tail(&p_ptr->port_list, &ports); spin_unlock_bh(&tipc_port_list_lock); - tipc_port_unlock(p_ptr); - return ref; + return &(p_ptr->publ); } int tipc_deleteport(u32 ref) @@ -296,7 +291,7 @@ int tipc_deleteport(u32 ref) kfree(p_ptr); dbg("Deleted port %u\n", ref); tipc_net_route_msg(buf); - return TIPC_OK; + return 0; } /** @@ -341,7 +336,7 @@ int tipc_portunreliable(u32 ref, unsigned int *isunreliable) return -EINVAL; *isunreliable = port_unreliable(p_ptr); tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) @@ -353,7 +348,7 @@ int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) return -EINVAL; msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } static int port_unreturnable(struct port *p_ptr) @@ -370,7 +365,7 @@ int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) return -EINVAL; *isunrejectable = port_unreturnable(p_ptr); tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) @@ -382,7 +377,7 @@ int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) return -EINVAL; msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } /* @@ -401,10 +396,10 @@ static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, buf = buf_acquire(LONG_H_SIZE); if (buf) { msg = buf_msg(buf); - msg_init(msg, usr, type, err, LONG_H_SIZE, destnode); + msg_init(msg, usr, type, LONG_H_SIZE, destnode); + msg_set_errcode(msg, err); msg_set_destport(msg, destport); msg_set_origport(msg, origport); - msg_set_destnode(msg, destnode); msg_set_orignode(msg, orignode); msg_set_transp_seqno(msg, seqno); msg_set_msgcnt(msg, ack); @@ -413,13 +408,6 @@ static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, return buf; } -int tipc_set_msg_option(struct tipc_port *tp_ptr, const char *opt, const u32 sz) -{ - msg_expand(&tp_ptr->phdr, msg_destnode(&tp_ptr->phdr)); - msg_set_options(&tp_ptr->phdr, opt, sz); - return TIPC_OK; -} - int tipc_reject_msg(struct sk_buff *buf, u32 err) { struct tipc_msg *msg = buf_msg(buf); @@ -452,17 +440,19 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err) return data_sz; } rmsg = buf_msg(rbuf); - msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg)); + msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); + msg_set_errcode(rmsg, err); msg_set_destport(rmsg, msg_origport(msg)); - msg_set_prevnode(rmsg, tipc_own_addr); msg_set_origport(rmsg, msg_destport(msg)); - if (msg_short(msg)) + if (msg_short(msg)) { msg_set_orignode(rmsg, tipc_own_addr); - else + /* leave name type & instance as zeroes */ + } else { msg_set_orignode(rmsg, msg_destnode(msg)); + msg_set_nametype(rmsg, msg_nametype(msg)); + msg_set_nameinst(rmsg, msg_nameinst(msg)); + } msg_set_size(rmsg, data_sz + hdr_sz); - msg_set_nametype(rmsg, msg_nametype(msg)); - msg_set_nameinst(rmsg, msg_nameinst(msg)); skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); /* send self-abort message when rejecting on a connected port */ @@ -632,7 +622,7 @@ void tipc_port_recv_proto_msg(struct sk_buff *buf) msg_orignode(msg), msg_destport(msg), tipc_own_addr, - DATA_HIGH, + TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, err, 0, @@ -784,6 +774,7 @@ void tipc_port_reinit(void) msg = &p_ptr->publ.phdr; if (msg_orignode(msg) == tipc_own_addr) break; + msg_set_prevnode(msg, tipc_own_addr); msg_set_orignode(msg, tipc_own_addr); } spin_unlock_bh(&tipc_port_list_lock); @@ -844,16 +835,13 @@ static void port_dispatcher_sigh(void *dummy) u32 peer_node = port_peernode(p_ptr); tipc_port_unlock(p_ptr); + if (unlikely(!cb)) + goto reject; if (unlikely(!connected)) { - if (unlikely(published)) + if (tipc_connect2port(dref, &orig)) goto reject; - tipc_connect2port(dref,&orig); - } - if (unlikely(msg_origport(msg) != peer_port)) - goto reject; - if (unlikely(msg_orignode(msg) != peer_node)) - goto reject; - if (unlikely(!cb)) + } else if ((msg_origport(msg) != peer_port) || + (msg_orignode(msg) != peer_node)) goto reject; if (unlikely(++p_ptr->publ.conn_unacked >= TIPC_FLOW_CONTROL_WIN)) @@ -868,9 +856,7 @@ static void port_dispatcher_sigh(void *dummy) tipc_msg_event cb = up_ptr->msg_cb; tipc_port_unlock(p_ptr); - if (unlikely(connected)) - goto reject; - if (unlikely(!cb)) + if (unlikely(!cb || connected)) goto reject; skb_pull(buf, msg_hdr_sz(msg)); cb(usr_handle, dref, &buf, msg_data(msg), @@ -883,11 +869,7 @@ static void port_dispatcher_sigh(void *dummy) tipc_named_msg_event cb = up_ptr->named_msg_cb; tipc_port_unlock(p_ptr); - if (unlikely(connected)) - goto reject; - if (unlikely(!cb)) - goto reject; - if (unlikely(!published)) + if (unlikely(!cb || connected || !published)) goto reject; dseq.type = msg_nametype(msg); dseq.lower = msg_nameinst(msg); @@ -914,11 +896,10 @@ err: u32 peer_node = port_peernode(p_ptr); tipc_port_unlock(p_ptr); - if (!connected || !cb) - break; - if (msg_origport(msg) != peer_port) + if (!cb || !connected) break; - if (msg_orignode(msg) != peer_node) + if ((msg_origport(msg) != peer_port) || + (msg_orignode(msg) != peer_node)) break; tipc_disconnect(dref); skb_pull(buf, msg_hdr_sz(msg)); @@ -930,7 +911,7 @@ err: tipc_msg_err_event cb = up_ptr->err_cb; tipc_port_unlock(p_ptr); - if (connected || !cb) + if (!cb || connected) break; skb_pull(buf, msg_hdr_sz(msg)); cb(usr_handle, dref, &buf, msg_data(msg), @@ -943,7 +924,7 @@ err: up_ptr->named_err_cb; tipc_port_unlock(p_ptr); - if (connected || !cb) + if (!cb || connected) break; dseq.type = msg_nametype(msg); dseq.lower = msg_nameinst(msg); @@ -982,7 +963,7 @@ static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) tipc_k_signal((Handler)port_dispatcher_sigh, 0); } spin_unlock_bh(&queue_lock); - return TIPC_OK; + return 0; } /* @@ -1059,15 +1040,14 @@ int tipc_createport(u32 user_ref, { struct user_port *up_ptr; struct port *p_ptr; - u32 ref; up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); if (!up_ptr) { warn("Port creation failed, no memory\n"); return -ENOMEM; } - ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance); - p_ptr = tipc_port_lock(ref); + p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, + port_wakeup, importance); if (!p_ptr) { kfree(up_ptr); return -ENOMEM; @@ -1087,16 +1067,15 @@ int tipc_createport(u32 user_ref, INIT_LIST_HEAD(&up_ptr->uport_list); tipc_reg_add_port(up_ptr); *portref = p_ptr->publ.ref; - dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } int tipc_ownidentity(u32 ref, struct tipc_portid *id) { id->ref = ref; id->node = tipc_own_addr; - return TIPC_OK; + return 0; } int tipc_portimportance(u32 ref, unsigned int *importance) @@ -1108,7 +1087,7 @@ int tipc_portimportance(u32 ref, unsigned int *importance) return -EINVAL; *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } int tipc_set_portimportance(u32 ref, unsigned int imp) @@ -1123,7 +1102,7 @@ int tipc_set_portimportance(u32 ref, unsigned int imp) return -EINVAL; msg_set_importance(&p_ptr->publ.phdr, (u32)imp); tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } @@ -1158,7 +1137,7 @@ int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) list_add(&publ->pport_list, &p_ptr->publications); p_ptr->pub_count++; p_ptr->publ.published = 1; - res = TIPC_OK; + res = 0; } exit: tipc_port_unlock(p_ptr); @@ -1181,7 +1160,7 @@ int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) tipc_nametbl_withdraw(publ->type, publ->lower, publ->ref, publ->key); } - res = TIPC_OK; + res = 0; } else { list_for_each_entry_safe(publ, tpubl, &p_ptr->publications, pport_list) { @@ -1195,7 +1174,7 @@ int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) break; tipc_nametbl_withdraw(publ->type, publ->lower, publ->ref, publ->key); - res = TIPC_OK; + res = 0; break; } } @@ -1239,13 +1218,35 @@ int tipc_connect2port(u32 ref, struct tipc_portid const *peer) tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, (void *)(unsigned long)ref, (net_ev_handler)port_handle_node_down); - res = TIPC_OK; + res = 0; exit: tipc_port_unlock(p_ptr); p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); return res; } +/** + * tipc_disconnect_port - disconnect port from peer + * + * Port must be locked. + */ + +int tipc_disconnect_port(struct tipc_port *tp_ptr) +{ + int res; + + if (tp_ptr->connected) { + tp_ptr->connected = 0; + /* let timer expire on it's own to avoid deadlock! */ + tipc_nodesub_unsubscribe( + &((struct port *)tp_ptr)->subscription); + res = 0; + } else { + res = -ENOTCONN; + } + return res; +} + /* * tipc_disconnect(): Disconnect port form peer. * This is a node local operation. @@ -1254,17 +1255,12 @@ exit: int tipc_disconnect(u32 ref) { struct port *p_ptr; - int res = -ENOTCONN; + int res; p_ptr = tipc_port_lock(ref); if (!p_ptr) return -EINVAL; - if (p_ptr->publ.connected) { - p_ptr->publ.connected = 0; - /* let timer expire on it's own to avoid deadlock! */ - tipc_nodesub_unsubscribe(&p_ptr->subscription); - res = TIPC_OK; - } + res = tipc_disconnect_port((struct tipc_port *)p_ptr); tipc_port_unlock(p_ptr); return res; } @@ -1309,7 +1305,7 @@ int tipc_isconnected(u32 ref, int *isconnected) return -EINVAL; *isconnected = p_ptr->publ.connected; tipc_port_unlock(p_ptr); - return TIPC_OK; + return 0; } int tipc_peer(u32 ref, struct tipc_portid *peer) @@ -1323,7 +1319,7 @@ int tipc_peer(u32 ref, struct tipc_portid *peer) if (p_ptr->publ.connected) { peer->ref = port_peerport(p_ptr); peer->node = port_peernode(p_ptr); - res = TIPC_OK; + res = 0; } else res = -ENOTCONN; tipc_port_unlock(p_ptr);