dlm: print error from kernel_sendpage
Print a dlm-specific error when a socket error occurs
when sending a dlm message.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index c6da6c3..87e9d79 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -124,6 +124,7 @@
struct connection *othercon;
struct work_struct rwork; /* Receive workqueue */
struct work_struct swork; /* Send workqueue */
+ void (*orig_error_report)(struct sock *sk);
};
#define sock2con(x) ((struct connection *)(x)->sk_user_data)
@@ -464,6 +465,43 @@
return 0;
}
+static void lowcomms_error_report(struct sock *sk)
+{
+ struct connection *con = sock2con(sk);
+ struct sockaddr_storage saddr;
+
+ if (nodeid_to_addr(con->nodeid, &saddr, NULL, false)) {
+ printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
+ "sending to node %d, port %d, "
+ "sk_err=%d/%d\n", dlm_our_nodeid(),
+ con->nodeid, dlm_config.ci_tcp_port,
+ sk->sk_err, sk->sk_err_soft);
+ return;
+ } else if (saddr.ss_family == AF_INET) {
+ struct sockaddr_in *sin4 = (struct sockaddr_in *)&saddr;
+
+ printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
+ "sending to node %d at %pI4, port %d, "
+ "sk_err=%d/%d\n", dlm_our_nodeid(),
+ con->nodeid, &sin4->sin_addr.s_addr,
+ dlm_config.ci_tcp_port, sk->sk_err,
+ sk->sk_err_soft);
+ } else {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&saddr;
+
+ printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
+ "sending to node %d at %u.%u.%u.%u, "
+ "port %d, sk_err=%d/%d\n", dlm_our_nodeid(),
+ con->nodeid, sin6->sin6_addr.s6_addr32[0],
+ sin6->sin6_addr.s6_addr32[1],
+ sin6->sin6_addr.s6_addr32[2],
+ sin6->sin6_addr.s6_addr32[3],
+ dlm_config.ci_tcp_port, sk->sk_err,
+ sk->sk_err_soft);
+ }
+ con->orig_error_report(sk);
+}
+
/* Make a socket active */
static void add_sock(struct socket *sock, struct connection *con)
{
@@ -475,6 +513,8 @@
con->sock->sk->sk_state_change = lowcomms_state_change;
con->sock->sk->sk_user_data = con;
con->sock->sk->sk_allocation = GFP_NOFS;
+ con->orig_error_report = con->sock->sk->sk_error_report;
+ con->sock->sk->sk_error_report = lowcomms_error_report;
}
/* Add the port number to an IPv6 or 4 sockaddr and return the address