diff options
Diffstat (limited to 'net/tipc/port.c')
| -rw-r--r-- | net/tipc/port.c | 1578 |
1 files changed, 385 insertions, 1193 deletions
diff --git a/net/tipc/port.c b/net/tipc/port.c index e70d27ea657..5fd7acce01e 100644 --- a/net/tipc/port.c +++ b/net/tipc/port.c @@ -1,8 +1,8 @@ /* * net/tipc/port.c: TIPC port code * - * Copyright (c) 1992-2007, Ericsson AB - * Copyright (c) 2004-2008, Wind River Systems + * Copyright (c) 1992-2007, 2014, Ericsson AB + * Copyright (c) 2004-2008, 2010-2013, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -36,15 +36,9 @@ #include "core.h" #include "config.h" -#include "dbg.h" #include "port.h" -#include "addr.h" -#include "link.h" -#include "node.h" #include "name_table.h" -#include "user_reg.h" -#include "msg.h" -#include "bcast.h" +#include "socket.h" /* Connection management: */ #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ @@ -53,101 +47,89 @@ #define MAX_REJECT_SIZE 1024 -static struct sk_buff *msg_queue_head = NULL; -static struct sk_buff *msg_queue_tail = NULL; - DEFINE_SPINLOCK(tipc_port_list_lock); -static DEFINE_SPINLOCK(queue_lock); static LIST_HEAD(ports); static void port_handle_node_down(unsigned long ref); -static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err); -static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err); +static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err); +static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err); static void port_timeout(unsigned long ref); - -static u32 port_peernode(struct port *p_ptr) -{ - return msg_destnode(&p_ptr->publ.phdr); -} - -static u32 port_peerport(struct port *p_ptr) -{ - return msg_destport(&p_ptr->publ.phdr); -} - -static u32 port_out_seqno(struct port *p_ptr) +/** + * tipc_port_peer_msg - verify message was sent by connected port's peer + * + * Handles cases where the node's network address has changed from + * the default of <0.0.0> to its configured setting. + */ +int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg) { - return msg_transp_seqno(&p_ptr->publ.phdr); -} + u32 peernode; + u32 orignode; -static void port_incr_out_seqno(struct port *p_ptr) -{ - struct tipc_msg *m = &p_ptr->publ.phdr; + if (msg_origport(msg) != tipc_port_peerport(p_ptr)) + return 0; - if (likely(!msg_routed(m))) - return; - msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); + orignode = msg_orignode(msg); + peernode = tipc_port_peernode(p_ptr); + return (orignode == peernode) || + (!orignode && (peernode == tipc_own_addr)) || + (!peernode && (orignode == tipc_own_addr)); } /** - * tipc_multicast - send a multicast message to local and remote destinations + * tipc_port_mcast_xmit - send a multicast message to local and remote + * destinations */ - -int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain, - u32 num_sect, struct iovec const *msg_sect) +int tipc_port_mcast_xmit(struct tipc_port *oport, + struct tipc_name_seq const *seq, + struct iovec const *msg_sect, + unsigned int len) { struct tipc_msg *hdr; struct sk_buff *buf; struct sk_buff *ibuf = NULL; - struct port_list dports = {0, NULL, }; - struct port *oport = tipc_port_deref(ref); + struct tipc_port_list dports = {0, NULL, }; int ext_targets; int res; - if (unlikely(!oport)) - return -EINVAL; - /* Create multicast message */ - - hdr = &oport->publ.phdr; + hdr = &oport->phdr; msg_set_type(hdr, TIPC_MCAST_MSG); + msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); + msg_set_destport(hdr, 0); + msg_set_destnode(hdr, 0); msg_set_nametype(hdr, seq->type); msg_set_namelower(hdr, seq->lower); msg_set_nameupper(hdr, seq->upper); msg_set_hdr_sz(hdr, MCAST_H_SIZE); - res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, - !oport->user_port, &buf); + res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); if (unlikely(!buf)) return res; /* Figure out where to send multicast message */ - ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, TIPC_NODE_SCOPE, &dports); /* Send message to destinations (duplicate it only if necessary) */ - if (ext_targets) { if (dports.count != 0) { 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); - } + res = tipc_bclink_xmit(buf); + if ((res < 0) && (dports.count != 0)) + kfree_skb(ibuf); } else { ibuf = buf; } if (res >= 0) { if (ibuf) - tipc_port_recv_mcast(ibuf, &dports); + tipc_port_mcast_rcv(ibuf, &dports); } else { tipc_port_list_free(&dports); } @@ -155,22 +137,20 @@ int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain, } /** - * tipc_port_recv_mcast - deliver multicast message to all destination ports + * tipc_port_mcast_rcv - deliver multicast message to all destination ports * * If there is no port list, perform a lookup to create one */ - -void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) +void tipc_port_mcast_rcv(struct sk_buff *buf, struct tipc_port_list *dp) { - struct tipc_msg* msg; - struct port_list dports = {0, NULL, }; - struct port_list *item = dp; + struct tipc_msg *msg; + struct tipc_port_list dports = {0, NULL, }; + struct tipc_port_list *item = dp; int cnt = 0; msg = buf_msg(buf); /* Create destination port list, if one wasn't supplied */ - if (dp == NULL) { tipc_nametbl_mc_translate(msg_nametype(msg), msg_namelower(msg), @@ -181,11 +161,11 @@ void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) } /* Deliver a copy of message to each destination port */ - if (dp->count != 0) { + msg_set_destnode(msg, tipc_own_addr); if (dp->count == 1) { msg_set_destport(msg, dp->ports[0]); - tipc_port_recv_msg(buf); + tipc_sk_rcv(buf); tipc_port_list_free(dp); return; } @@ -194,216 +174,107 @@ void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); if (b == NULL) { - warn("Unable to deliver multicast message(s)\n"); - msg_dbg(msg, "LOST:"); + pr_warn("Unable to deliver multicast message(s)\n"); goto exit; } - if ((index == 0) && (cnt != 0)) { + if ((index == 0) && (cnt != 0)) item = item->next; - } - msg_set_destport(buf_msg(b),item->ports[index]); - tipc_port_recv_msg(b); + msg_set_destport(buf_msg(b), item->ports[index]); + tipc_sk_rcv(b); } } exit: - buf_discard(buf); + kfree_skb(buf); tipc_port_list_free(dp); } -/** - * tipc_createport_raw - create a generic TIPC port + +void tipc_port_wakeup(struct tipc_port *port) +{ + tipc_sock_wakeup(tipc_port_to_sock(port)); +} + +/* tipc_port_init - intiate TIPC port and lock it * - * Returns pointer to (locked) TIPC port, or NULL if unable to create it + * Returns obtained reference if initialization is successful, zero otherwise */ - -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) +u32 tipc_port_init(struct tipc_port *p_ptr, + const unsigned int importance) { - struct port *p_ptr; struct tipc_msg *msg; u32 ref; - p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); - if (!p_ptr) { - warn("Port creation failed, no memory\n"); - return NULL; - } - ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); + ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); if (!ref) { - warn("Port creation failed, reference table exhausted\n"); - kfree(p_ptr); - return NULL; + pr_warn("Port registration failed, ref. table exhausted\n"); + return 0; } - 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, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); - msg_set_origport(msg, ref); - p_ptr->last_in_seqno = 41; - p_ptr->sent = 1; + p_ptr->max_pkt = MAX_PKT_DEFAULT; + p_ptr->ref = ref; INIT_LIST_HEAD(&p_ptr->wait_list); INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); - p_ptr->congested_link = NULL; - p_ptr->dispatcher = dispatcher; - p_ptr->wakeup = wakeup; - p_ptr->user_port = NULL; k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); - spin_lock_bh(&tipc_port_list_lock); INIT_LIST_HEAD(&p_ptr->publications); INIT_LIST_HEAD(&p_ptr->port_list); + + /* + * Must hold port list lock while initializing message header template + * to ensure a change to node's own network address doesn't result + * in template containing out-dated network address information + */ + spin_lock_bh(&tipc_port_list_lock); + msg = &p_ptr->phdr; + tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); + msg_set_origport(msg, ref); list_add_tail(&p_ptr->port_list, &ports); spin_unlock_bh(&tipc_port_list_lock); - return &(p_ptr->publ); + return ref; } -int tipc_deleteport(u32 ref) +void tipc_port_destroy(struct tipc_port *p_ptr) { - struct port *p_ptr; struct sk_buff *buf = NULL; - tipc_withdraw(ref, 0, NULL); - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; + tipc_withdraw(p_ptr, 0, NULL); - tipc_ref_discard(ref); - tipc_port_unlock(p_ptr); + spin_lock_bh(p_ptr->lock); + tipc_ref_discard(p_ptr->ref); + spin_unlock_bh(p_ptr->lock); k_cancel_timer(&p_ptr->timer); - if (p_ptr->publ.connected) { + if (p_ptr->connected) { buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); tipc_nodesub_unsubscribe(&p_ptr->subscription); } - if (p_ptr->user_port) { - tipc_reg_remove_port(p_ptr->user_port); - kfree(p_ptr->user_port); - } spin_lock_bh(&tipc_port_list_lock); list_del(&p_ptr->port_list); list_del(&p_ptr->wait_list); spin_unlock_bh(&tipc_port_list_lock); k_term_timer(&p_ptr->timer); - kfree(p_ptr); - dbg("Deleted port %u\n", ref); tipc_net_route_msg(buf); - return 0; -} - -/** - * tipc_get_port() - return port associated with 'ref' - * - * Note: Port is not locked. - */ - -struct tipc_port *tipc_get_port(const u32 ref) -{ - return (struct tipc_port *)tipc_ref_deref(ref); -} - -/** - * tipc_get_handle - return user handle associated to port 'ref' - */ - -void *tipc_get_handle(const u32 ref) -{ - struct port *p_ptr; - void * handle; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return NULL; - handle = p_ptr->publ.usr_handle; - tipc_port_unlock(p_ptr); - return handle; -} - -static int port_unreliable(struct port *p_ptr) -{ - return msg_src_droppable(&p_ptr->publ.phdr); -} - -int tipc_portunreliable(u32 ref, unsigned int *isunreliable) -{ - struct port *p_ptr; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - *isunreliable = port_unreliable(p_ptr); - tipc_port_unlock(p_ptr); - return 0; -} - -int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) -{ - struct port *p_ptr; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); - tipc_port_unlock(p_ptr); - return 0; -} - -static int port_unreturnable(struct port *p_ptr) -{ - return msg_dest_droppable(&p_ptr->publ.phdr); -} - -int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) -{ - struct port *p_ptr; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - *isunrejectable = port_unreturnable(p_ptr); - tipc_port_unlock(p_ptr); - return 0; -} - -int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) -{ - struct port *p_ptr; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); - tipc_port_unlock(p_ptr); - return 0; } /* - * port_build_proto_msg(): build a port level protocol - * or a connection abortion message. Called with - * tipc_port lock on. + * port_build_proto_msg(): create connection protocol message for port + * + * On entry the port must be locked and connected. */ -static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, - u32 origport, u32 orignode, - u32 usr, u32 type, u32 err, - u32 seqno, u32 ack) +static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, + u32 type, u32 ack) { struct sk_buff *buf; struct tipc_msg *msg; - buf = buf_acquire(LONG_H_SIZE); + buf = tipc_buf_acquire(INT_H_SIZE); if (buf) { msg = buf_msg(buf); - 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_orignode(msg, orignode); - msg_set_transp_seqno(msg, seqno); + tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, + tipc_port_peernode(p_ptr)); + msg_set_destport(msg, tipc_port_peerport(p_ptr)); + msg_set_origport(msg, p_ptr->ref); msg_set_msgcnt(msg, ack); - msg_dbg(msg, "PORT>SEND>:"); } return buf; } @@ -414,75 +285,80 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err) struct sk_buff *rbuf; struct tipc_msg *rmsg; int hdr_sz; - u32 imp = msg_importance(msg); + u32 imp; u32 data_sz = msg_data_sz(msg); - - if (data_sz > MAX_REJECT_SIZE) - data_sz = MAX_REJECT_SIZE; - if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) - imp++; - msg_dbg(msg, "port->rej: "); + u32 src_node; + u32 rmsg_sz; /* discard rejected message if it shouldn't be returned to sender */ - if (msg_errcode(msg) || msg_dest_droppable(msg)) { - buf_discard(buf); - return data_sz; + if (WARN(!msg_isdata(msg), + "attempt to reject message with user=%u", msg_user(msg))) { + dump_stack(); + goto exit; } + if (msg_errcode(msg) || msg_dest_droppable(msg)) + goto exit; + + /* + * construct returned message by copying rejected message header and + * data (or subset), then updating header fields that need adjusting + */ + hdr_sz = msg_hdr_sz(msg); + rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); + + rbuf = tipc_buf_acquire(rmsg_sz); + if (rbuf == NULL) + goto exit; - /* construct rejected message */ - if (msg_mcast(msg)) - hdr_sz = MCAST_H_SIZE; - else - hdr_sz = LONG_H_SIZE; - rbuf = buf_acquire(data_sz + hdr_sz); - if (rbuf == NULL) { - buf_discard(buf); - return data_sz; - } rmsg = buf_msg(rbuf); - 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_origport(rmsg, msg_destport(msg)); - if (msg_short(msg)) { - msg_set_orignode(rmsg, tipc_own_addr); - /* 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)); + skb_copy_to_linear_data(rbuf, msg, rmsg_sz); + + if (msg_connected(rmsg)) { + imp = msg_importance(rmsg); + if (imp < TIPC_CRITICAL_IMPORTANCE) + msg_set_importance(rmsg, ++imp); } - msg_set_size(rmsg, data_sz + hdr_sz); - skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); + msg_set_non_seq(rmsg, 0); + msg_set_size(rmsg, rmsg_sz); + msg_set_errcode(rmsg, err); + msg_set_prevnode(rmsg, tipc_own_addr); + msg_swap_words(rmsg, 4, 5); + if (!msg_short(rmsg)) + msg_swap_words(rmsg, 6, 7); /* send self-abort message when rejecting on a connected port */ if (msg_connected(msg)) { - struct sk_buff *abuf = NULL; - struct port *p_ptr = tipc_port_lock(msg_destport(msg)); + struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); if (p_ptr) { - if (p_ptr->publ.connected) + 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 rejected message */ - buf_discard(buf); - tipc_net_route_msg(rbuf); + /* send returned message & dispose of rejected message */ + src_node = msg_prevnode(msg); + if (in_own_node(src_node)) + tipc_sk_rcv(rbuf); + else + tipc_link_xmit(rbuf, src_node, msg_link_selector(rmsg)); +exit: + kfree_skb(buf); return data_sz; } -int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, - struct iovec const *msg_sect, u32 num_sect, - int err) +int tipc_port_iovec_reject(struct tipc_port *p_ptr, struct tipc_msg *hdr, + struct iovec const *msg_sect, unsigned int len, + int err) { struct sk_buff *buf; int res; - res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, - !p_ptr->user_port, &buf); + res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); if (!buf) return res; @@ -491,13 +367,13 @@ int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, static void port_timeout(unsigned long ref) { - struct port *p_ptr = tipc_port_lock(ref); + struct tipc_port *p_ptr = tipc_port_lock(ref); struct sk_buff *buf = NULL; if (!p_ptr) return; - if (!p_ptr->publ.connected) { + if (!p_ptr->connected) { tipc_port_unlock(p_ptr); return; } @@ -506,16 +382,7 @@ static void port_timeout(unsigned long ref) if (p_ptr->probing_state == PROBING) { buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); } else { - buf = port_build_proto_msg(port_peerport(p_ptr), - port_peernode(p_ptr), - p_ptr->publ.ref, - tipc_own_addr, - CONN_MANAGER, - CONN_PROBE, - TIPC_OK, - port_out_seqno(p_ptr), - 0); - port_incr_out_seqno(p_ptr); + buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); p_ptr->probing_state = PROBING; k_start_timer(&p_ptr->timer, p_ptr->probing_interval); } @@ -526,8 +393,8 @@ static void port_timeout(unsigned long ref) static void port_handle_node_down(unsigned long ref) { - struct port *p_ptr = tipc_port_lock(ref); - struct sk_buff* buf = NULL; + struct tipc_port *p_ptr = tipc_port_lock(ref); + struct sk_buff *buf = NULL; if (!p_ptr) return; @@ -537,623 +404,225 @@ static void port_handle_node_down(unsigned long ref) } -static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) +static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) { - u32 imp = msg_importance(&p_ptr->publ.phdr); + struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); - if (!p_ptr->publ.connected) - return NULL; - if (imp < TIPC_CRITICAL_IMPORTANCE) - imp++; - return port_build_proto_msg(p_ptr->publ.ref, - tipc_own_addr, - port_peerport(p_ptr), - port_peernode(p_ptr), - imp, - TIPC_CONN_MSG, - err, - p_ptr->last_in_seqno + 1, - 0); + if (buf) { + struct tipc_msg *msg = buf_msg(buf); + msg_swap_words(msg, 4, 5); + msg_swap_words(msg, 6, 7); + } + return buf; } -static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) +static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) { - u32 imp = msg_importance(&p_ptr->publ.phdr); + struct sk_buff *buf; + struct tipc_msg *msg; + u32 imp; - if (!p_ptr->publ.connected) + if (!p_ptr->connected) return NULL; - if (imp < TIPC_CRITICAL_IMPORTANCE) - imp++; - return port_build_proto_msg(port_peerport(p_ptr), - port_peernode(p_ptr), - p_ptr->publ.ref, - tipc_own_addr, - imp, - TIPC_CONN_MSG, - err, - port_out_seqno(p_ptr), - 0); + + buf = tipc_buf_acquire(BASIC_H_SIZE); + if (buf) { + msg = buf_msg(buf); + memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); + msg_set_hdr_sz(msg, BASIC_H_SIZE); + msg_set_size(msg, BASIC_H_SIZE); + imp = msg_importance(msg); + if (imp < TIPC_CRITICAL_IMPORTANCE) + msg_set_importance(msg, ++imp); + msg_set_errcode(msg, err); + } + return buf; } -void tipc_port_recv_proto_msg(struct sk_buff *buf) +void tipc_port_proto_rcv(struct sk_buff *buf) { struct tipc_msg *msg = buf_msg(buf); - struct port *p_ptr = tipc_port_lock(msg_destport(msg)); - u32 err = TIPC_OK; + struct tipc_port *p_ptr; struct sk_buff *r_buf = NULL; - struct sk_buff *abort_buf = NULL; - - msg_dbg(msg, "PORT<RECV<:"); - - if (!p_ptr) { - err = TIPC_ERR_NO_PORT; - } else if (p_ptr->publ.connected) { - if (port_peernode(p_ptr) != msg_orignode(msg)) - err = TIPC_ERR_NO_PORT; - if (port_peerport(p_ptr) != msg_origport(msg)) - err = TIPC_ERR_NO_PORT; - if (!err && msg_routed(msg)) { - u32 seqno = msg_transp_seqno(msg); - u32 myno = ++p_ptr->last_in_seqno; - if (seqno != myno) { - err = TIPC_ERR_NO_PORT; - abort_buf = port_build_self_abort_msg(p_ptr, err); - } - } - if (msg_type(msg) == CONN_ACK) { - int wakeup = tipc_port_congested(p_ptr) && - p_ptr->publ.congested && - p_ptr->wakeup; - p_ptr->acked += msg_msgcnt(msg); - if (tipc_port_congested(p_ptr)) - goto exit; - p_ptr->publ.congested = 0; - if (!wakeup) - goto exit; - p_ptr->wakeup(&p_ptr->publ); - goto exit; + u32 destport = msg_destport(msg); + int wakeable; + + /* Validate connection */ + p_ptr = tipc_port_lock(destport); + if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { + r_buf = tipc_buf_acquire(BASIC_H_SIZE); + if (r_buf) { + msg = buf_msg(r_buf); + tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, + BASIC_H_SIZE, msg_orignode(msg)); + msg_set_errcode(msg, TIPC_ERR_NO_PORT); + msg_set_origport(msg, destport); + msg_set_destport(msg, msg_origport(msg)); } - } else if (p_ptr->publ.published) { - err = TIPC_ERR_NO_PORT; - } - if (err) { - r_buf = port_build_proto_msg(msg_origport(msg), - msg_orignode(msg), - msg_destport(msg), - tipc_own_addr, - TIPC_HIGH_IMPORTANCE, - TIPC_CONN_MSG, - err, - 0, - 0); + if (p_ptr) + tipc_port_unlock(p_ptr); goto exit; } - /* All is fine */ - if (msg_type(msg) == CONN_PROBE) { - r_buf = port_build_proto_msg(msg_origport(msg), - msg_orignode(msg), - msg_destport(msg), - tipc_own_addr, - CONN_MANAGER, - CONN_PROBE_REPLY, - TIPC_OK, - port_out_seqno(p_ptr), - 0); + /* Process protocol message sent by peer */ + switch (msg_type(msg)) { + case CONN_ACK: + wakeable = tipc_port_congested(p_ptr) && p_ptr->congested; + p_ptr->acked += msg_msgcnt(msg); + if (!tipc_port_congested(p_ptr)) { + p_ptr->congested = 0; + if (wakeable) + tipc_port_wakeup(p_ptr); + } + break; + case CONN_PROBE: + r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); + break; + default: + /* CONN_PROBE_REPLY or unrecognized - no action required */ + break; } p_ptr->probing_state = CONFIRMED; - port_incr_out_seqno(p_ptr); + tipc_port_unlock(p_ptr); exit: - if (p_ptr) - tipc_port_unlock(p_ptr); tipc_net_route_msg(r_buf); - tipc_net_route_msg(abort_buf); - buf_discard(buf); + kfree_skb(buf); } -static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) +static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id) { struct publication *publ; + int ret; if (full_id) - tipc_printf(buf, "<%u.%u.%u:%u>:", - tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), - tipc_node(tipc_own_addr), p_ptr->publ.ref); + ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:", + tipc_zone(tipc_own_addr), + tipc_cluster(tipc_own_addr), + tipc_node(tipc_own_addr), p_ptr->ref); else - tipc_printf(buf, "%-10u:", p_ptr->publ.ref); - - if (p_ptr->publ.connected) { - u32 dport = port_peerport(p_ptr); - u32 destnode = port_peernode(p_ptr); - - tipc_printf(buf, " connected to <%u.%u.%u:%u>", - tipc_zone(destnode), tipc_cluster(destnode), - tipc_node(destnode), dport); - if (p_ptr->publ.conn_type != 0) - tipc_printf(buf, " via {%u,%u}", - p_ptr->publ.conn_type, - p_ptr->publ.conn_instance); - } - else if (p_ptr->publ.published) { - tipc_printf(buf, " bound to"); + ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref); + + if (p_ptr->connected) { + u32 dport = tipc_port_peerport(p_ptr); + u32 destnode = tipc_port_peernode(p_ptr); + + ret += tipc_snprintf(buf + ret, len - ret, + " connected to <%u.%u.%u:%u>", + tipc_zone(destnode), + tipc_cluster(destnode), + tipc_node(destnode), dport); + if (p_ptr->conn_type != 0) + ret += tipc_snprintf(buf + ret, len - ret, + " via {%u,%u}", p_ptr->conn_type, + p_ptr->conn_instance); + } else if (p_ptr->published) { + ret += tipc_snprintf(buf + ret, len - ret, " bound to"); list_for_each_entry(publ, &p_ptr->publications, pport_list) { if (publ->lower == publ->upper) - tipc_printf(buf, " {%u,%u}", publ->type, - publ->lower); + ret += tipc_snprintf(buf + ret, len - ret, + " {%u,%u}", publ->type, + publ->lower); else - tipc_printf(buf, " {%u,%u,%u}", publ->type, - publ->lower, publ->upper); + ret += tipc_snprintf(buf + ret, len - ret, + " {%u,%u,%u}", publ->type, + publ->lower, publ->upper); } } - tipc_printf(buf, "\n"); + ret += tipc_snprintf(buf + ret, len - ret, "\n"); + return ret; } -#define MAX_PORT_QUERY 32768 - struct sk_buff *tipc_port_get_ports(void) { struct sk_buff *buf; struct tlv_desc *rep_tlv; - struct print_buf pb; - struct port *p_ptr; - int str_len; + char *pb; + int pb_len; + struct tipc_port *p_ptr; + int str_len = 0; - buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); + buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); if (!buf) return NULL; rep_tlv = (struct tlv_desc *)buf->data; + pb = TLV_DATA(rep_tlv); + pb_len = ULTRA_STRING_MAX_LEN; - tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); spin_lock_bh(&tipc_port_list_lock); list_for_each_entry(p_ptr, &ports, port_list) { - spin_lock_bh(p_ptr->publ.lock); - port_print(p_ptr, &pb, 0); - spin_unlock_bh(p_ptr->publ.lock); + spin_lock_bh(p_ptr->lock); + str_len += port_print(p_ptr, pb, pb_len, 0); + spin_unlock_bh(p_ptr->lock); } spin_unlock_bh(&tipc_port_list_lock); - str_len = tipc_printbuf_validate(&pb); - + str_len += 1; /* for "\0" */ skb_put(buf, TLV_SPACE(str_len)); TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); return buf; } -#if 0 - -#define MAX_PORT_STATS 2000 - -struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) -{ - u32 ref; - struct port *p_ptr; - struct sk_buff *buf; - struct tlv_desc *rep_tlv; - struct print_buf pb; - int str_len; - - if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) - return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); - - ref = *(u32 *)TLV_DATA(req_tlv_area); - ref = ntohl(ref); - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return cfg_reply_error_string("port not found"); - - buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); - if (!buf) { - tipc_port_unlock(p_ptr); - return NULL; - } - rep_tlv = (struct tlv_desc *)buf->data; - - tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); - port_print(p_ptr, &pb, 1); - /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ - tipc_port_unlock(p_ptr); - str_len = tipc_printbuf_validate(&pb); - - skb_put(buf, TLV_SPACE(str_len)); - TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); - - return buf; -} - -#endif - void tipc_port_reinit(void) { - struct port *p_ptr; + struct tipc_port *p_ptr; struct tipc_msg *msg; spin_lock_bh(&tipc_port_list_lock); list_for_each_entry(p_ptr, &ports, port_list) { - msg = &p_ptr->publ.phdr; - if (msg_orignode(msg) == tipc_own_addr) - break; + msg = &p_ptr->phdr; msg_set_prevnode(msg, tipc_own_addr); msg_set_orignode(msg, tipc_own_addr); } spin_unlock_bh(&tipc_port_list_lock); } - -/* - * port_dispatcher_sigh(): Signal handler for messages destinated - * to the tipc_port interface. - */ - -static void port_dispatcher_sigh(void *dummy) -{ - struct sk_buff *buf; - - spin_lock_bh(&queue_lock); - buf = msg_queue_head; - msg_queue_head = NULL; - spin_unlock_bh(&queue_lock); - - while (buf) { - struct port *p_ptr; - struct user_port *up_ptr; - struct tipc_portid orig; - struct tipc_name_seq dseq; - void *usr_handle; - int connected; - int published; - u32 message_type; - - struct sk_buff *next = buf->next; - struct tipc_msg *msg = buf_msg(buf); - u32 dref = msg_destport(msg); - - message_type = msg_type(msg); - if (message_type > TIPC_DIRECT_MSG) - goto reject; /* Unsupported message type */ - - p_ptr = tipc_port_lock(dref); - if (!p_ptr) - goto reject; /* Port deleted while msg in queue */ - - orig.ref = msg_origport(msg); - orig.node = msg_orignode(msg); - up_ptr = p_ptr->user_port; - usr_handle = up_ptr->usr_handle; - connected = p_ptr->publ.connected; - published = p_ptr->publ.published; - - if (unlikely(msg_errcode(msg))) - goto err; - - switch (message_type) { - - case TIPC_CONN_MSG:{ - tipc_conn_msg_event cb = up_ptr->conn_msg_cb; - u32 peer_port = port_peerport(p_ptr); - u32 peer_node = port_peernode(p_ptr); - - tipc_port_unlock(p_ptr); - if (unlikely(!cb)) - goto reject; - if (unlikely(!connected)) { - if (tipc_connect2port(dref, &orig)) - goto reject; - } 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)) - tipc_acknowledge(dref, - p_ptr->publ.conn_unacked); - skb_pull(buf, msg_hdr_sz(msg)); - cb(usr_handle, dref, &buf, msg_data(msg), - msg_data_sz(msg)); - break; - } - case TIPC_DIRECT_MSG:{ - tipc_msg_event cb = up_ptr->msg_cb; - - tipc_port_unlock(p_ptr); - if (unlikely(!cb || connected)) - goto reject; - skb_pull(buf, msg_hdr_sz(msg)); - cb(usr_handle, dref, &buf, msg_data(msg), - msg_data_sz(msg), msg_importance(msg), - &orig); - break; - } - case TIPC_MCAST_MSG: - case TIPC_NAMED_MSG:{ - tipc_named_msg_event cb = up_ptr->named_msg_cb; - - tipc_port_unlock(p_ptr); - if (unlikely(!cb || connected || !published)) - goto reject; - dseq.type = msg_nametype(msg); - dseq.lower = msg_nameinst(msg); - dseq.upper = (message_type == TIPC_NAMED_MSG) - ? dseq.lower : msg_nameupper(msg); - skb_pull(buf, msg_hdr_sz(msg)); - cb(usr_handle, dref, &buf, msg_data(msg), - msg_data_sz(msg), msg_importance(msg), - &orig, &dseq); - break; - } - } - if (buf) - buf_discard(buf); - buf = next; - continue; -err: - switch (message_type) { - - case TIPC_CONN_MSG:{ - tipc_conn_shutdown_event cb = - up_ptr->conn_err_cb; - u32 peer_port = port_peerport(p_ptr); - u32 peer_node = port_peernode(p_ptr); - - tipc_port_unlock(p_ptr); - if (!cb || !connected) - break; - if ((msg_origport(msg) != peer_port) || - (msg_orignode(msg) != peer_node)) - break; - tipc_disconnect(dref); - skb_pull(buf, msg_hdr_sz(msg)); - cb(usr_handle, dref, &buf, msg_data(msg), - msg_data_sz(msg), msg_errcode(msg)); - break; - } - case TIPC_DIRECT_MSG:{ - tipc_msg_err_event cb = up_ptr->err_cb; - - tipc_port_unlock(p_ptr); - if (!cb || connected) - break; - skb_pull(buf, msg_hdr_sz(msg)); - cb(usr_handle, dref, &buf, msg_data(msg), - msg_data_sz(msg), msg_errcode(msg), &orig); - break; - } - case TIPC_MCAST_MSG: - case TIPC_NAMED_MSG:{ - tipc_named_msg_err_event cb = - up_ptr->named_err_cb; - - tipc_port_unlock(p_ptr); - if (!cb || connected) - break; - dseq.type = msg_nametype(msg); - dseq.lower = msg_nameinst(msg); - dseq.upper = (message_type == TIPC_NAMED_MSG) - ? dseq.lower : msg_nameupper(msg); - skb_pull(buf, msg_hdr_sz(msg)); - cb(usr_handle, dref, &buf, msg_data(msg), - msg_data_sz(msg), msg_errcode(msg), &dseq); - break; - } - } - if (buf) - buf_discard(buf); - buf = next; - continue; -reject: - tipc_reject_msg(buf, TIPC_ERR_NO_PORT); - buf = next; - } -} - -/* - * port_dispatcher(): Dispatcher for messages destinated - * to the tipc_port interface. Called with port locked. - */ - -static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) -{ - buf->next = NULL; - spin_lock_bh(&queue_lock); - if (msg_queue_head) { - msg_queue_tail->next = buf; - msg_queue_tail = buf; - } else { - msg_queue_tail = msg_queue_head = buf; - tipc_k_signal((Handler)port_dispatcher_sigh, 0); - } - spin_unlock_bh(&queue_lock); - return 0; -} - -/* - * Wake up port after congestion: Called with port locked, - * - */ - -static void port_wakeup_sh(unsigned long ref) -{ - struct port *p_ptr; - struct user_port *up_ptr; - tipc_continue_event cb = NULL; - void *uh = NULL; - - p_ptr = tipc_port_lock(ref); - if (p_ptr) { - up_ptr = p_ptr->user_port; - if (up_ptr) { - cb = up_ptr->continue_event_cb; - uh = up_ptr->usr_handle; - } - tipc_port_unlock(p_ptr); - } - if (cb) - cb(uh, ref); -} - - -static void port_wakeup(struct tipc_port *p_ptr) -{ - tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); -} - void tipc_acknowledge(u32 ref, u32 ack) { - struct port *p_ptr; + struct tipc_port *p_ptr; struct sk_buff *buf = NULL; p_ptr = tipc_port_lock(ref); if (!p_ptr) return; - if (p_ptr->publ.connected) { - p_ptr->publ.conn_unacked -= ack; - buf = port_build_proto_msg(port_peerport(p_ptr), - port_peernode(p_ptr), - ref, - tipc_own_addr, - CONN_MANAGER, - CONN_ACK, - TIPC_OK, - port_out_seqno(p_ptr), - ack); + if (p_ptr->connected) { + p_ptr->conn_unacked -= ack; + buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); } tipc_port_unlock(p_ptr); tipc_net_route_msg(buf); } -/* - * tipc_createport(): user level call. Will add port to - * registry if non-zero user_ref. - */ - -int tipc_createport(u32 user_ref, - void *usr_handle, - unsigned int importance, - tipc_msg_err_event error_cb, - tipc_named_msg_err_event named_error_cb, - tipc_conn_shutdown_event conn_error_cb, - tipc_msg_event msg_cb, - tipc_named_msg_event named_msg_cb, - tipc_conn_msg_event conn_msg_cb, - tipc_continue_event continue_event_cb,/* May be zero */ - u32 *portref) -{ - struct user_port *up_ptr; - struct port *p_ptr; - - up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); - if (!up_ptr) { - warn("Port creation failed, no memory\n"); - return -ENOMEM; - } - p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, - port_wakeup, importance); - if (!p_ptr) { - kfree(up_ptr); - return -ENOMEM; - } - - p_ptr->user_port = up_ptr; - up_ptr->user_ref = user_ref; - up_ptr->usr_handle = usr_handle; - up_ptr->ref = p_ptr->publ.ref; - up_ptr->err_cb = error_cb; - up_ptr->named_err_cb = named_error_cb; - up_ptr->conn_err_cb = conn_error_cb; - up_ptr->msg_cb = msg_cb; - up_ptr->named_msg_cb = named_msg_cb; - up_ptr->conn_msg_cb = conn_msg_cb; - up_ptr->continue_event_cb = continue_event_cb; - INIT_LIST_HEAD(&up_ptr->uport_list); - tipc_reg_add_port(up_ptr); - *portref = p_ptr->publ.ref; - tipc_port_unlock(p_ptr); - return 0; -} - -int tipc_ownidentity(u32 ref, struct tipc_portid *id) -{ - id->ref = ref; - id->node = tipc_own_addr; - return 0; -} - -int tipc_portimportance(u32 ref, unsigned int *importance) -{ - struct port *p_ptr; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); - tipc_port_unlock(p_ptr); - return 0; -} - -int tipc_set_portimportance(u32 ref, unsigned int imp) -{ - struct port *p_ptr; - - if (imp > TIPC_CRITICAL_IMPORTANCE) - return -EINVAL; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - msg_set_importance(&p_ptr->publ.phdr, (u32)imp); - tipc_port_unlock(p_ptr); - return 0; -} - - -int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) +int tipc_publish(struct tipc_port *p_ptr, unsigned int scope, + struct tipc_name_seq const *seq) { - struct port *p_ptr; struct publication *publ; u32 key; - int res = -EINVAL; - p_ptr = tipc_port_lock(ref); - if (!p_ptr) + if (p_ptr->connected) return -EINVAL; + key = p_ptr->ref + p_ptr->pub_count + 1; + if (key == p_ptr->ref) + return -EADDRINUSE; - dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " - "lower = %u, upper = %u\n", - ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); - if (p_ptr->publ.connected) - goto exit; - if (seq->lower > seq->upper) - goto exit; - if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) - goto exit; - key = ref + p_ptr->pub_count + 1; - if (key == ref) { - res = -EADDRINUSE; - goto exit; - } publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, - scope, p_ptr->publ.ref, key); + scope, p_ptr->ref, key); if (publ) { list_add(&publ->pport_list, &p_ptr->publications); p_ptr->pub_count++; - p_ptr->publ.published = 1; - res = 0; + p_ptr->published = 1; + return 0; } -exit: - tipc_port_unlock(p_ptr); - return res; + return -EINVAL; } -int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) +int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope, + struct tipc_name_seq const *seq) { - struct port *p_ptr; struct publication *publ; struct publication *tpubl; int res = -EINVAL; - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; if (!seq) { list_for_each_entry_safe(publ, tpubl, &p_ptr->publications, pport_list) { @@ -1179,528 +648,251 @@ int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) } } if (list_empty(&p_ptr->publications)) - p_ptr->publ.published = 0; - tipc_port_unlock(p_ptr); + p_ptr->published = 0; return res; } -int tipc_connect2port(u32 ref, struct tipc_portid const *peer) +int tipc_port_connect(u32 ref, struct tipc_portid const *peer) { - struct port *p_ptr; - struct tipc_msg *msg; - int res = -EINVAL; + struct tipc_port *p_ptr; + int res; p_ptr = tipc_port_lock(ref); if (!p_ptr) return -EINVAL; - if (p_ptr->publ.published || p_ptr->publ.connected) + res = __tipc_port_connect(ref, p_ptr, peer); + tipc_port_unlock(p_ptr); + return res; +} + +/* + * __tipc_port_connect - connect to a remote peer + * + * Port must be locked. + */ +int __tipc_port_connect(u32 ref, struct tipc_port *p_ptr, + struct tipc_portid const *peer) +{ + struct tipc_msg *msg; + int res = -EINVAL; + + if (p_ptr->published || p_ptr->connected) goto exit; if (!peer->ref) goto exit; - msg = &p_ptr->publ.phdr; + 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->publ.ref); - msg_set_transp_seqno(msg, 42); msg_set_type(msg, TIPC_CONN_MSG); - if (!may_route(peer->node)) - msg_set_hdr_sz(msg, SHORT_H_SIZE); - else - msg_set_hdr_sz(msg, LONG_H_SIZE); + msg_set_lookup_scope(msg, 0); + msg_set_hdr_sz(msg, SHORT_H_SIZE); p_ptr->probing_interval = PROBING_INTERVAL; p_ptr->probing_state = CONFIRMED; - p_ptr->publ.connected = 1; + p_ptr->connected = 1; k_start_timer(&p_ptr->timer, p_ptr->probing_interval); - tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, + tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, (void *)(unsigned long)ref, (net_ev_handler)port_handle_node_down); res = 0; exit: - tipc_port_unlock(p_ptr); - p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); + p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); return res; } -/** - * tipc_disconnect_port - disconnect port from peer +/* + * __tipc_disconnect - disconnect port from peer * * Port must be locked. */ - -int tipc_disconnect_port(struct tipc_port *tp_ptr) +int __tipc_port_disconnect(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; + tipc_nodesub_unsubscribe(&tp_ptr->subscription); + return 0; } - return res; + + return -ENOTCONN; } /* - * tipc_disconnect(): Disconnect port form peer. + * tipc_port_disconnect(): Disconnect port form peer. * This is a node local operation. */ - -int tipc_disconnect(u32 ref) +int tipc_port_disconnect(u32 ref) { - struct port *p_ptr; + struct tipc_port *p_ptr; int res; p_ptr = tipc_port_lock(ref); if (!p_ptr) return -EINVAL; - res = tipc_disconnect_port((struct tipc_port *)p_ptr); + res = __tipc_port_disconnect(p_ptr); tipc_port_unlock(p_ptr); return res; } /* - * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect + * tipc_port_shutdown(): Send a SHUTDOWN msg to peer and disconnect */ -int tipc_shutdown(u32 ref) +int tipc_port_shutdown(u32 ref) { - struct port *p_ptr; + struct tipc_port *p_ptr; struct sk_buff *buf = NULL; p_ptr = tipc_port_lock(ref); if (!p_ptr) return -EINVAL; - if (p_ptr->publ.connected) { - u32 imp = msg_importance(&p_ptr->publ.phdr); - if (imp < TIPC_CRITICAL_IMPORTANCE) - imp++; - buf = port_build_proto_msg(port_peerport(p_ptr), - port_peernode(p_ptr), - ref, - tipc_own_addr, - imp, - TIPC_CONN_MSG, - TIPC_CONN_SHUTDOWN, - port_out_seqno(p_ptr), - 0); - } + buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); tipc_port_unlock(p_ptr); tipc_net_route_msg(buf); - return tipc_disconnect(ref); -} - -int tipc_isconnected(u32 ref, int *isconnected) -{ - struct port *p_ptr; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - *isconnected = p_ptr->publ.connected; - tipc_port_unlock(p_ptr); - return 0; + return tipc_port_disconnect(ref); } -int tipc_peer(u32 ref, struct tipc_portid *peer) -{ - struct port *p_ptr; - int res; - - p_ptr = tipc_port_lock(ref); - if (!p_ptr) - return -EINVAL; - if (p_ptr->publ.connected) { - peer->ref = port_peerport(p_ptr); - peer->node = port_peernode(p_ptr); - res = 0; - } else - res = -ENOTCONN; - tipc_port_unlock(p_ptr); - return res; -} - -int tipc_ref_valid(u32 ref) -{ - /* Works irrespective of type */ - return !!tipc_ref_deref(ref); -} - - /* - * tipc_port_recv_sections(): Concatenate and deliver sectioned - * message for this node. + * tipc_port_iovec_rcv: Concatenate and deliver sectioned + * message for this node. */ - -int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, - struct iovec const *msg_sect) +static int tipc_port_iovec_rcv(struct tipc_port *sender, + struct iovec const *msg_sect, + unsigned int len) { struct sk_buff *buf; int res; - res = msg_build(&sender->publ.phdr, msg_sect, num_sect, - MAX_MSG_SIZE, !sender->user_port, &buf); + res = tipc_msg_build(&sender->phdr, msg_sect, len, MAX_MSG_SIZE, &buf); if (likely(buf)) - tipc_port_recv_msg(buf); + tipc_sk_rcv(buf); return res; } /** * tipc_send - send message sections on connection */ - -int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) +int tipc_send(struct tipc_port *p_ptr, + struct iovec const *msg_sect, + unsigned int len) { - struct port *p_ptr; u32 destnode; int res; - p_ptr = tipc_port_deref(ref); - if (!p_ptr || !p_ptr->publ.connected) + if (!p_ptr->connected) return -EINVAL; - p_ptr->publ.congested = 1; + p_ptr->congested = 1; if (!tipc_port_congested(p_ptr)) { - destnode = port_peernode(p_ptr); - if (likely(destnode != tipc_own_addr)) - res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, - destnode); + destnode = tipc_port_peernode(p_ptr); + if (likely(!in_own_node(destnode))) + res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, + destnode); else - res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); + res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); if (likely(res != -ELINKCONG)) { - port_incr_out_seqno(p_ptr); - p_ptr->publ.congested = 0; - p_ptr->sent++; + p_ptr->congested = 0; + if (res > 0) + p_ptr->sent++; return res; } } - if (port_unreliable(p_ptr)) { - p_ptr->publ.congested = 0; - /* Just calculate msg length and return */ - return msg_calc_data_size(msg_sect, num_sect); + if (tipc_port_unreliable(p_ptr)) { + p_ptr->congested = 0; + return len; } return -ELINKCONG; } /** - * tipc_send_buf - send message buffer on connection - */ - -int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) -{ - struct port *p_ptr; - struct tipc_msg *msg; - u32 destnode; - u32 hsz; - u32 sz; - u32 res; - - p_ptr = tipc_port_deref(ref); - if (!p_ptr || !p_ptr->publ.connected) - return -EINVAL; - - msg = &p_ptr->publ.phdr; - hsz = msg_hdr_sz(msg); - sz = hsz + dsz; - msg_set_size(msg, sz); - if (skb_cow(buf, hsz)) - return -ENOMEM; - - skb_push(buf, hsz); - skb_copy_to_linear_data(buf, msg, hsz); - destnode = msg_destnode(msg); - p_ptr->publ.congested = 1; - if (!tipc_port_congested(p_ptr)) { - if (likely(destnode != tipc_own_addr)) - res = tipc_send_buf_fast(buf, destnode); - else { - tipc_port_recv_msg(buf); - res = sz; - } - if (likely(res != -ELINKCONG)) { - port_incr_out_seqno(p_ptr); - p_ptr->sent++; - p_ptr->publ.congested = 0; - return res; - } - } - if (port_unreliable(p_ptr)) { - p_ptr->publ.congested = 0; - return dsz; - } - return -ELINKCONG; -} - -/** - * tipc_forward2name - forward message sections to port name - */ - -int tipc_forward2name(u32 ref, - struct tipc_name const *name, - u32 domain, - u32 num_sect, - struct iovec const *msg_sect, - struct tipc_portid const *orig, - unsigned int importance) -{ - struct port *p_ptr; - struct tipc_msg *msg; - u32 destnode = domain; - u32 destport = 0; - int res; - - p_ptr = tipc_port_deref(ref); - if (!p_ptr || p_ptr->publ.connected) - return -EINVAL; - - msg = &p_ptr->publ.phdr; - msg_set_type(msg, TIPC_NAMED_MSG); - msg_set_orignode(msg, orig->node); - msg_set_origport(msg, orig->ref); - msg_set_hdr_sz(msg, LONG_H_SIZE); - msg_set_nametype(msg, name->type); - msg_set_nameinst(msg, name->instance); - msg_set_lookup_scope(msg, addr_scope(domain)); - if (importance <= TIPC_CRITICAL_IMPORTANCE) - msg_set_importance(msg,importance); - destport = tipc_nametbl_translate(name->type, name->instance, &destnode); - msg_set_destnode(msg, destnode); - msg_set_destport(msg, destport); - - if (likely(destport || destnode)) { - p_ptr->sent++; - if (likely(destnode == tipc_own_addr)) - return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); - res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, - destnode); - if (likely(res != -ELINKCONG)) - return res; - if (port_unreliable(p_ptr)) { - /* Just calculate msg length and return */ - return msg_calc_data_size(msg_sect, num_sect); - } - return -ELINKCONG; - } - return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, - TIPC_ERR_NO_NAME); -} - -/** * tipc_send2name - send message sections to port name */ - -int tipc_send2name(u32 ref, +int tipc_send2name(struct tipc_port *p_ptr, struct tipc_name const *name, unsigned int domain, - unsigned int num_sect, - struct iovec const *msg_sect) -{ - struct tipc_portid orig; - - orig.ref = ref; - orig.node = tipc_own_addr; - return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, - TIPC_PORT_IMPORTANCE); -} - -/** - * tipc_forward_buf2name - forward message buffer to port name - */ - -int tipc_forward_buf2name(u32 ref, - struct tipc_name const *name, - u32 domain, - struct sk_buff *buf, - unsigned int dsz, - struct tipc_portid const *orig, - unsigned int importance) + struct iovec const *msg_sect, + unsigned int len) { - struct port *p_ptr; struct tipc_msg *msg; u32 destnode = domain; - u32 destport = 0; + u32 destport; int res; - p_ptr = (struct port *)tipc_ref_deref(ref); - if (!p_ptr || p_ptr->publ.connected) + if (p_ptr->connected) return -EINVAL; - msg = &p_ptr->publ.phdr; - if (importance <= TIPC_CRITICAL_IMPORTANCE) - msg_set_importance(msg, importance); + msg = &p_ptr->phdr; msg_set_type(msg, TIPC_NAMED_MSG); - msg_set_orignode(msg, orig->node); - msg_set_origport(msg, orig->ref); + msg_set_hdr_sz(msg, NAMED_H_SIZE); msg_set_nametype(msg, name->type); msg_set_nameinst(msg, name->instance); - msg_set_lookup_scope(msg, addr_scope(domain)); - msg_set_hdr_sz(msg, LONG_H_SIZE); - msg_set_size(msg, LONG_H_SIZE + dsz); + msg_set_lookup_scope(msg, tipc_addr_scope(domain)); destport = tipc_nametbl_translate(name->type, name->instance, &destnode); msg_set_destnode(msg, destnode); msg_set_destport(msg, destport); - msg_dbg(msg, "forw2name ==> "); - if (skb_cow(buf, LONG_H_SIZE)) - return -ENOMEM; - skb_push(buf, LONG_H_SIZE); - skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); - msg_dbg(buf_msg(buf),"PREP:"); + if (likely(destport || destnode)) { - p_ptr->sent++; - if (destnode == tipc_own_addr) - return tipc_port_recv_msg(buf); - res = tipc_send_buf_fast(buf, destnode); - if (likely(res != -ELINKCONG)) + if (likely(in_own_node(destnode))) + res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); + else if (tipc_own_addr) + res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, + destnode); + else + res = tipc_port_iovec_reject(p_ptr, msg, msg_sect, + len, TIPC_ERR_NO_NODE); + if (likely(res != -ELINKCONG)) { + if (res > 0) + p_ptr->sent++; return res; - if (port_unreliable(p_ptr)) - return dsz; - return -ELINKCONG; - } - return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); -} - -/** - * tipc_send_buf2name - send message buffer to port name - */ - -int tipc_send_buf2name(u32 ref, - struct tipc_name const *dest, - u32 domain, - struct sk_buff *buf, - unsigned int dsz) -{ - struct tipc_portid orig; - - orig.ref = ref; - orig.node = tipc_own_addr; - return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, - TIPC_PORT_IMPORTANCE); -} - -/** - * tipc_forward2port - forward message sections to port identity - */ - -int tipc_forward2port(u32 ref, - struct tipc_portid const *dest, - unsigned int num_sect, - struct iovec const *msg_sect, - struct tipc_portid const *orig, - unsigned int importance) -{ - struct port *p_ptr; - struct tipc_msg *msg; - int res; - - p_ptr = tipc_port_deref(ref); - if (!p_ptr || p_ptr->publ.connected) - return -EINVAL; + } + if (tipc_port_unreliable(p_ptr)) + return len; - msg = &p_ptr->publ.phdr; - msg_set_type(msg, TIPC_DIRECT_MSG); - msg_set_orignode(msg, orig->node); - msg_set_origport(msg, orig->ref); - msg_set_destnode(msg, dest->node); - msg_set_destport(msg, dest->ref); - msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); - if (importance <= TIPC_CRITICAL_IMPORTANCE) - msg_set_importance(msg, importance); - p_ptr->sent++; - if (dest->node == tipc_own_addr) - return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); - res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); - if (likely(res != -ELINKCONG)) - return res; - if (port_unreliable(p_ptr)) { - /* Just calculate msg length and return */ - return msg_calc_data_size(msg_sect, num_sect); + return -ELINKCONG; } - return -ELINKCONG; + return tipc_port_iovec_reject(p_ptr, msg, msg_sect, len, + TIPC_ERR_NO_NAME); } /** * tipc_send2port - send message sections to port identity */ - -int tipc_send2port(u32 ref, +int tipc_send2port(struct tipc_port *p_ptr, struct tipc_portid const *dest, - unsigned int num_sect, - struct iovec const *msg_sect) -{ - struct tipc_portid orig; - - orig.ref = ref; - orig.node = tipc_own_addr; - return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, - TIPC_PORT_IMPORTANCE); -} - -/** - * tipc_forward_buf2port - forward message buffer to port identity - */ -int tipc_forward_buf2port(u32 ref, - struct tipc_portid const *dest, - struct sk_buff *buf, - unsigned int dsz, - struct tipc_portid const *orig, - unsigned int importance) + struct iovec const *msg_sect, + unsigned int len) { - struct port *p_ptr; struct tipc_msg *msg; int res; - p_ptr = (struct port *)tipc_ref_deref(ref); - if (!p_ptr || p_ptr->publ.connected) + if (p_ptr->connected) return -EINVAL; - msg = &p_ptr->publ.phdr; + msg = &p_ptr->phdr; msg_set_type(msg, TIPC_DIRECT_MSG); - msg_set_orignode(msg, orig->node); - msg_set_origport(msg, orig->ref); + msg_set_lookup_scope(msg, 0); msg_set_destnode(msg, dest->node); msg_set_destport(msg, dest->ref); - msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); - if (importance <= TIPC_CRITICAL_IMPORTANCE) - msg_set_importance(msg, importance); - msg_set_size(msg, DIR_MSG_H_SIZE + dsz); - if (skb_cow(buf, DIR_MSG_H_SIZE)) - return -ENOMEM; - - skb_push(buf, DIR_MSG_H_SIZE); - skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); - msg_dbg(msg, "buf2port: "); - p_ptr->sent++; - if (dest->node == tipc_own_addr) - return tipc_port_recv_msg(buf); - res = tipc_send_buf_fast(buf, dest->node); - if (likely(res != -ELINKCONG)) - return res; - if (port_unreliable(p_ptr)) - return dsz; - return -ELINKCONG; -} + msg_set_hdr_sz(msg, BASIC_H_SIZE); -/** - * tipc_send_buf2port - send message buffer to port identity - */ - -int tipc_send_buf2port(u32 ref, - struct tipc_portid const *dest, - struct sk_buff *buf, - unsigned int dsz) -{ - struct tipc_portid orig; + if (in_own_node(dest->node)) + res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); + else if (tipc_own_addr) + res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, + dest->node); + else + res = tipc_port_iovec_reject(p_ptr, msg, msg_sect, len, + TIPC_ERR_NO_NODE); + if (likely(res != -ELINKCONG)) { + if (res > 0) + p_ptr->sent++; + return res; + } + if (tipc_port_unreliable(p_ptr)) + return len; - orig.ref = ref; - orig.node = tipc_own_addr; - return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, - TIPC_PORT_IMPORTANCE); + return -ELINKCONG; } - |