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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>
This commit is contained in:
Bob Peterson 2015-08-27 09:34:47 -05:00 committed by David Teigland
parent b96f465035
commit b3a5bbfd78
1 changed files with 40 additions and 0 deletions
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40
fs/dlm/lowcomms.c
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@ -124,6 +124,7 @@ struct connection {
struct connection *othercon; struct connection *othercon;
struct work_struct rwork; /* Receive workqueue */ struct work_struct rwork; /* Receive workqueue */
struct work_struct swork; /* Send workqueue */ struct work_struct swork; /* Send workqueue */
void (*orig_error_report)(struct sock *sk);
}; };
#define sock2con(x) ((struct connection *)(x)->sk_user_data) #define sock2con(x) ((struct connection *)(x)->sk_user_data)
@ -464,6 +465,43 @@ int dlm_lowcomms_connect_node(int nodeid)
return 0; 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 */ /* Make a socket active */
static void add_sock(struct socket *sock, struct connection *con) 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_state_change = lowcomms_state_change;
con->sock->sk->sk_user_data = con; con->sock->sk->sk_user_data = con;
con->sock->sk->sk_allocation = GFP_NOFS; 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 /* Add the port number to an IPv6 or 4 sockaddr and return the address