diff options
-rw-r--r-- | net/tipc/port.c | 90 | ||||
-rw-r--r-- | net/tipc/port.h | 11 | ||||
-rw-r--r-- | net/tipc/socket.c | 158 |
3 files changed, 110 insertions, 149 deletions
diff --git a/net/tipc/port.c b/net/tipc/port.c index 5fd7acc..8350ec9 100644 --- a/net/tipc/port.c +++ b/net/tipc/port.c @@ -806,93 +806,3 @@ int tipc_send(struct tipc_port *p_ptr, } return -ELINKCONG; } - -/** - * tipc_send2name - send message sections to port name - */ -int tipc_send2name(struct tipc_port *p_ptr, - struct tipc_name const *name, - unsigned int domain, - struct iovec const *msg_sect, - unsigned int len) -{ - struct tipc_msg *msg; - u32 destnode = domain; - u32 destport; - int res; - - if (p_ptr->connected) - return -EINVAL; - - msg = &p_ptr->phdr; - msg_set_type(msg, TIPC_NAMED_MSG); - 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, tipc_addr_scope(domain)); - destport = tipc_nametbl_translate(name->type, name->instance, &destnode); - msg_set_destnode(msg, destnode); - msg_set_destport(msg, destport); - - if (likely(destport || destnode)) { - 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 (tipc_port_unreliable(p_ptr)) - return len; - - 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(struct tipc_port *p_ptr, - struct tipc_portid const *dest, - struct iovec const *msg_sect, - unsigned int len) -{ - struct tipc_msg *msg; - int res; - - if (p_ptr->connected) - return -EINVAL; - - msg = &p_ptr->phdr; - msg_set_type(msg, TIPC_DIRECT_MSG); - msg_set_lookup_scope(msg, 0); - msg_set_destnode(msg, dest->node); - msg_set_destport(msg, dest->ref); - msg_set_hdr_sz(msg, BASIC_H_SIZE); - - 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; - - return -ELINKCONG; -} diff --git a/net/tipc/port.h b/net/tipc/port.h index cf4ca5b..e566d55 100644 --- a/net/tipc/port.h +++ b/net/tipc/port.h @@ -140,17 +140,6 @@ int tipc_send(struct tipc_port *port, struct iovec const *msg_sect, unsigned int len); -int tipc_send2name(struct tipc_port *port, - struct tipc_name const *name, - u32 domain, - struct iovec const *msg_sect, - unsigned int len); - -int tipc_send2port(struct tipc_port *port, - struct tipc_portid const *dest, - struct iovec const *msg_sect, - unsigned int len); - int tipc_port_mcast_xmit(struct tipc_port *port, struct tipc_name_seq const *seq, struct iovec const *msg, diff --git a/net/tipc/socket.c b/net/tipc/socket.c index e642ed5..5690751 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -36,8 +36,9 @@ #include "core.h" #include "port.h" +#include "name_table.h" #include "node.h" - +#include "link.h" #include <linux/export.h> #include "link.h" @@ -545,6 +546,8 @@ static int dest_name_check(struct sockaddr_tipc *dest, struct msghdr *m) { struct tipc_cfg_msg_hdr hdr; + if (unlikely(dest->addrtype == TIPC_ADDR_ID)) + return 0; if (likely(dest->addr.name.name.type >= TIPC_RESERVED_TYPES)) return 0; if (likely(dest->addr.name.name.type == TIPC_TOP_SRV)) @@ -587,13 +590,49 @@ static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p) return 0; } +/** + * tipc_sendmcast - send multicast message + * @sock: socket structure + * @seq: destination address + * @iov: message data to send + * @dsz: total length of message data + * @timeo: timeout to wait for wakeup + * + * Called from function tipc_sendmsg(), which has done all sanity checks + * Returns the number of bytes sent on success, or errno + */ +static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq, + struct iovec *iov, size_t dsz, long timeo) +{ + struct sock *sk = sock->sk; + struct tipc_sock *tsk = tipc_sk(sk); + int rc; + + do { + if (sock->state != SS_READY) { + rc = -EOPNOTSUPP; + break; + } + rc = tipc_port_mcast_xmit(&tsk->port, seq, iov, dsz); + if (likely(rc >= 0)) { + if (sock->state != SS_READY) + sock->state = SS_CONNECTING; + break; + } + if (rc != -ELINKCONG) + break; + rc = tipc_wait_for_sndmsg(sock, &timeo); + } while (!rc); + + return rc; +} /** * tipc_sendmsg - send message in connectionless manner * @iocb: if NULL, indicates that socket lock is already held * @sock: socket structure * @m: message to send - * @total_len: length of message + * @dsz: amount of user data to be sent * * Message must have an destination specified explicitly. * Used for SOCK_RDM and SOCK_DGRAM messages, @@ -603,93 +642,116 @@ static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p) * Returns the number of bytes sent on success, or errno otherwise */ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock, - struct msghdr *m, size_t total_len) + struct msghdr *m, size_t dsz) { + DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); struct sock *sk = sock->sk; struct tipc_sock *tsk = tipc_sk(sk); struct tipc_port *port = &tsk->port; - DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name); - int needs_conn; + struct tipc_msg *mhdr = &port->phdr; + struct iovec *iov = m->msg_iov; + u32 dnode, dport; + struct sk_buff *buf; + struct tipc_name_seq *seq = &dest->addr.nameseq; + u32 mtu; long timeo; - int res = -EINVAL; + int rc = -EINVAL; if (unlikely(!dest)) return -EDESTADDRREQ; + if (unlikely((m->msg_namelen < sizeof(*dest)) || (dest->family != AF_TIPC))) return -EINVAL; - if (total_len > TIPC_MAX_USER_MSG_SIZE) + + if (dsz > TIPC_MAX_USER_MSG_SIZE) return -EMSGSIZE; if (iocb) lock_sock(sk); - needs_conn = (sock->state != SS_READY); - if (unlikely(needs_conn)) { + if (unlikely(sock->state != SS_READY)) { if (sock->state == SS_LISTENING) { - res = -EPIPE; + rc = -EPIPE; goto exit; } if (sock->state != SS_UNCONNECTED) { - res = -EISCONN; + rc = -EISCONN; goto exit; } if (tsk->port.published) { - res = -EOPNOTSUPP; + rc = -EOPNOTSUPP; goto exit; } if (dest->addrtype == TIPC_ADDR_NAME) { tsk->port.conn_type = dest->addr.name.name.type; tsk->port.conn_instance = dest->addr.name.name.instance; } - - /* Abort any pending connection attempts (very unlikely) */ - reject_rx_queue(sk); } + rc = dest_name_check(dest, m); + if (rc) + goto exit; timeo = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT); - do { - if (dest->addrtype == TIPC_ADDR_NAME) { - res = dest_name_check(dest, m); - if (res) - break; - res = tipc_send2name(port, - &dest->addr.name.name, - dest->addr.name.domain, - m->msg_iov, - total_len); - } else if (dest->addrtype == TIPC_ADDR_ID) { - res = tipc_send2port(port, - &dest->addr.id, - m->msg_iov, - total_len); - } else if (dest->addrtype == TIPC_ADDR_MCAST) { - if (needs_conn) { - res = -EOPNOTSUPP; - break; - } - res = dest_name_check(dest, m); - if (res) - break; - res = tipc_port_mcast_xmit(port, - &dest->addr.nameseq, - m->msg_iov, - total_len); + + if (dest->addrtype == TIPC_ADDR_MCAST) { + rc = tipc_sendmcast(sock, seq, iov, dsz, timeo); + goto exit; + } else if (dest->addrtype == TIPC_ADDR_NAME) { + u32 type = dest->addr.name.name.type; + u32 inst = dest->addr.name.name.instance; + u32 domain = dest->addr.name.domain; + + dnode = domain; + msg_set_type(mhdr, TIPC_NAMED_MSG); + msg_set_hdr_sz(mhdr, NAMED_H_SIZE); + msg_set_nametype(mhdr, type); + msg_set_nameinst(mhdr, inst); + msg_set_lookup_scope(mhdr, tipc_addr_scope(domain)); + dport = tipc_nametbl_translate(type, inst, &dnode); + msg_set_destnode(mhdr, dnode); + msg_set_destport(mhdr, dport); + if (unlikely(!dport && !dnode)) { + rc = -EHOSTUNREACH; + goto exit; } - if (likely(res != -ELINKCONG)) { - if (needs_conn && (res >= 0)) + } else if (dest->addrtype == TIPC_ADDR_ID) { + dnode = dest->addr.id.node; + msg_set_type(mhdr, TIPC_DIRECT_MSG); + msg_set_lookup_scope(mhdr, 0); + msg_set_destnode(mhdr, dnode); + msg_set_destport(mhdr, dest->addr.id.ref); + msg_set_hdr_sz(mhdr, BASIC_H_SIZE); + } + +new_mtu: + mtu = tipc_node_get_mtu(dnode, tsk->port.ref); + rc = tipc_msg_build2(mhdr, iov, 0, dsz, mtu, &buf); + if (rc < 0) + goto exit; + + do { + rc = tipc_link_xmit2(buf, dnode, tsk->port.ref); + if (likely(rc >= 0)) { + if (sock->state != SS_READY) sock->state = SS_CONNECTING; + rc = dsz; break; } - res = tipc_wait_for_sndmsg(sock, &timeo); - if (res) + if (rc == -EMSGSIZE) + goto new_mtu; + + if (rc != -ELINKCONG) break; - } while (1); + + rc = tipc_wait_for_sndmsg(sock, &timeo); + } while (!rc); exit: if (iocb) release_sock(sk); - return res; + + return rc; } static int tipc_wait_for_sndpkt(struct socket *sock, long *timeo_p) |