[DLM] lowcomms style

Replace some printk with log_print, and fix some simple cases of lines
over 80.  Also, return -ENOTCONN if lowcomms_start fails due to no local
IP address being available.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 5c33233..27970a5 100644 (file)
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -395,7 +395,8 @@ static void sctp_init_failed(void)
 }
 
 /* Something happened to an association */
-static void process_sctp_notification(struct connection *con, struct msghdr *msg, char *buf)
+static void process_sctp_notification(struct connection *con,
+                                     struct msghdr *msg, char *buf)
 {
        union sctp_notification *sn = (union sctp_notification *)buf;
 
@@ -422,7 +423,7 @@ static void process_sctp_notification(struct connection *con, struct msghdr *msg
                         */
                        if ((int)sn->sn_assoc_change.sac_assoc_id <= 0) {
                                log_print("COMM_UP for invalid assoc ID %d",
-                                         (int)sn->sn_assoc_change.sac_assoc_id);
+                                        (int)sn->sn_assoc_change.sac_assoc_id);
                                sctp_init_failed();
                                return;
                        }
@@ -465,10 +466,12 @@ static void process_sctp_notification(struct connection *con, struct msghdr *msg
 
                        /* Peel off a new sock */
                        parg.associd = sn->sn_assoc_change.sac_assoc_id;
-                       ret = kernel_getsockopt(con->sock, IPPROTO_SCTP, SCTP_SOCKOPT_PEELOFF,
+                       ret = kernel_getsockopt(con->sock, IPPROTO_SCTP,
+                                               SCTP_SOCKOPT_PEELOFF,
                                                (void *)&parg, &parglen);
                        if (ret) {
-                               log_print("Can't peel off a socket for connection %d to node %d: err=%d\n",
+                               log_print("Can't peel off a socket for "
+                                         "connection %d to node %d: err=%d\n",
                                          parg.associd, nodeid, ret);
                        }
                        file = fget(parg.sd);
@@ -478,7 +481,7 @@ static void process_sctp_notification(struct connection *con, struct msghdr *msg
                        put_unused_fd(parg.sd);
 
                        log_print("got new/restarted association %d nodeid %d",
-                                 (int)sn->sn_assoc_change.sac_assoc_id, nodeid);
+                                (int)sn->sn_assoc_change.sac_assoc_id, nodeid);
 
                        /* Send any pending writes */
                        clear_bit(CF_CONNECT_PENDING, &new_con->flags);
@@ -587,7 +590,7 @@ static int receive_from_sock(struct connection *con)
                msg.msg_controllen = sizeof(incmsg);
 
                process_sctp_notification(con, &msg,
-                                         page_address(con->rx_page) + con->cb.base);
+                               page_address(con->rx_page) + con->cb.base);
                mutex_unlock(&con->sock_mutex);
                return 0;
        }
@@ -601,10 +604,10 @@ static int receive_from_sock(struct connection *con)
                                          con->cb.base, con->cb.len,
                                          PAGE_CACHE_SIZE);
        if (ret == -EBADMSG) {
-               printk(KERN_INFO "dlm: lowcomms: addr=%p, base=%u, len=%u, "
-                      "iov_len=%u, iov_base[0]=%p, read=%d\n",
-                      page_address(con->rx_page), con->cb.base, con->cb.len,
-                      len, iov[0].iov_base, r);
+               log_print("lowcomms: addr=%p, base=%u, len=%u, "
+                         "iov_len=%u, iov_base[0]=%p, read=%d",
+                         page_address(con->rx_page), con->cb.base, con->cb.len,
+                         len, iov[0].iov_base, r);
        }
        if (ret < 0)
                goto out_close;
@@ -680,7 +683,7 @@ static int tcp_accept_from_sock(struct connection *con)
        /* Get the new node's NODEID */
        make_sockaddr(&peeraddr, 0, &len);
        if (dlm_addr_to_nodeid(&peeraddr, &nodeid)) {
-               printk("dlm: connect from non cluster node\n");
+               log_print("connect from non cluster node");
                sock_release(newsock);
                mutex_unlock(&con->sock_mutex);
                return -1;
@@ -705,7 +708,7 @@ static int tcp_accept_from_sock(struct connection *con)
                if (!othercon) {
                        othercon = kmem_cache_zalloc(con_cache, GFP_KERNEL);
                        if (!othercon) {
-                               printk("dlm: failed to allocate incoming socket\n");
+                               log_print("failed to allocate incoming socket");
                                mutex_unlock(&newcon->sock_mutex);
                                result = -ENOMEM;
                                goto accept_err;
@@ -748,7 +751,7 @@ accept_err:
        sock_release(newsock);
 
        if (result != -EAGAIN)
-               printk("dlm: error accepting connection from node: %d\n", result);
+               log_print("error accepting connection from node: %d", result);
        return result;
 }
 
@@ -826,7 +829,8 @@ static void sctp_init_assoc(struct connection *con)
 
        ret = kernel_sendmsg(base_con->sock, &outmessage, iov, 1, len);
        if (ret < 0) {
-               log_print("Send first packet to node %d failed: %d", con->nodeid, ret);
+               log_print("Send first packet to node %d failed: %d",
+                         con->nodeid, ret);
 
                /* Try again later */
                clear_bit(CF_CONNECT_PENDING, &con->flags);
@@ -929,9 +933,10 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
                addr_len = sizeof(struct sockaddr_in6);
 
        /* Create a socket to communicate with */
-       result = sock_create_kern(dlm_local_addr[0]->ss_family, SOCK_STREAM, IPPROTO_TCP, &sock);
+       result = sock_create_kern(dlm_local_addr[0]->ss_family, SOCK_STREAM,
+                                 IPPROTO_TCP, &sock);
        if (result < 0) {
-               printk("dlm: Can't create listening comms socket\n");
+               log_print("Can't create listening comms socket");
                goto create_out;
        }
 
@@ -939,8 +944,7 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
                                   (char *)&one, sizeof(one));
 
        if (result < 0) {
-               printk("dlm: Failed to set SO_REUSEADDR on socket: result=%d\n",
-                      result);
+               log_print("Failed to set SO_REUSEADDR on socket: %d", result);
        }
        sock->sk->sk_user_data = con;
        con->rx_action = tcp_accept_from_sock;
@@ -951,7 +955,7 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
        make_sockaddr(saddr, dlm_config.ci_tcp_port, &addr_len);
        result = sock->ops->bind(sock, (struct sockaddr *) saddr, addr_len);
        if (result < 0) {
-               printk("dlm: Can't bind to port %d\n", dlm_config.ci_tcp_port);
+               log_print("Can't bind to port %d", dlm_config.ci_tcp_port);
                sock_release(sock);
                sock = NULL;
                con->sock = NULL;
@@ -960,12 +964,12 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
        result = kernel_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
                                 (char *)&one, sizeof(one));
        if (result < 0) {
-               printk("dlm: Set keepalive failed: %d\n", result);
+               log_print("Set keepalive failed: %d", result);
        }
 
        result = sock->ops->listen(sock, 5);
        if (result < 0) {
-               printk("dlm: Can't listen on port %d\n", dlm_config.ci_tcp_port);
+               log_print("Can't listen on port %d", dlm_config.ci_tcp_port);
                sock_release(sock);
                sock = NULL;
                goto create_out;
@@ -994,8 +998,11 @@ static void init_local(void)
        }
 }
 
-/* Bind to an IP address. SCTP allows multiple address so it can do multi-homing */
-static int add_sctp_bind_addr(struct connection *sctp_con, struct sockaddr_storage *addr, int addr_len, int num)
+/* Bind to an IP address. SCTP allows multiple address so it can do
+   multi-homing */
+static int add_sctp_bind_addr(struct connection *sctp_con,
+                             struct sockaddr_storage *addr,
+                             int addr_len, int num)
 {
        int result = 0;
 
@@ -1048,10 +1055,10 @@ static int sctp_listen_for_all(void)
        result = kernel_setsockopt(sock, SOL_SOCKET, SO_RCVBUF,
                                 (char *)&bufsize, sizeof(bufsize));
        if (result)
-               log_print("Error increasing buffer space on socket: %d", result);
+               log_print("Error increasing buffer space on socket %d", result);
 
        result = kernel_setsockopt(sock, SOL_SCTP, SCTP_EVENTS,
-                                      (char *)&subscribe, sizeof(subscribe));
+                                  (char *)&subscribe, sizeof(subscribe));
        if (result < 0) {
                log_print("Failed to set SCTP_EVENTS on socket: result=%d",
                          result);
@@ -1102,7 +1109,8 @@ static int tcp_listen_for_all(void)
 
        /* We don't support multi-homed hosts */
        if (dlm_local_addr[1] != NULL) {
-               log_print("TCP protocol can't handle multi-homed hosts, try SCTP");
+               log_print("TCP protocol can't handle multi-homed hosts, "
+                         "try SCTP");
                return -EINVAL;
        }
 
@@ -1148,8 +1156,7 @@ static struct writequeue_entry *new_writequeue_entry(struct connection *con,
        return entry;
 }
 
-void *dlm_lowcomms_get_buffer(int nodeid, int len,
-                             gfp_t allocation, char **ppc)
+void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc)
 {
        struct connection *con;
        struct writequeue_entry *e;
@@ -1253,8 +1260,7 @@ static void send_to_sock(struct connection *con)
                                goto out;
                        if (ret <= 0)
                                goto send_error;
-               }
-               else {
+               } else {
                        /* Don't starve people filling buffers */
                        cond_resched();
                }
@@ -1426,6 +1432,7 @@ int dlm_lowcomms_start(void)
 
        init_local();
        if (!dlm_local_count) {
+               error = -ENOTCONN;
                log_print("no local IP address has been set");
                goto out;
        }