From b3a5bbfd780d9e9291f5f257be06e9ad6db11657 Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Thu, 27 Aug 2015 09:34:47 -0500 Subject: 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 Signed-off-by: David Teigland --- fs/dlm/lowcomms.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'fs/dlm') diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index c6da6c33ae46..87e9d796cf7d 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -124,6 +124,7 @@ struct connection { 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 @@ int dlm_lowcomms_connect_node(int nodeid) 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 @@ static void add_sock(struct socket *sock, struct connection *con) 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 -- cgit v1.2.3-58-ga151