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Diffstat (limited to 'net/tipc/socket.c')
-rw-r--r--net/tipc/socket.c158
1 files changed, 110 insertions, 48 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index e642ed5b3602..5690751cbfa5 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)
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-21 02:41:39 +0000