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iscsi-scst: add target_ip attribute

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It adds target_ip attribute containing target IP address in each
/sys/kernel/scst_tgt/targets/iscsi/TARGET/sessions/INITIATOR/INITIATOR_IP subdirectory.

It's useful to simplify monitoring management utilities



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@7067 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2016-12-20 05:53:48 +00:00
parent 80e49beea8
commit bb2f47e7a8
1 changed files with 68 additions and 0 deletions
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68
iscsi-scst/kernel/conn.c
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@@ -184,6 +184,66 @@ static ssize_t iscsi_conn_ip_show(struct kobject *kobj,
static struct kobj_attribute iscsi_conn_ip_attr =
__ATTR(ip, S_IRUGO, iscsi_conn_ip_show, NULL);
static ssize_t iscsi_get_target_ip(struct iscsi_conn *conn,
char *buf, int size)
{
int pos;
struct sock *sk;
TRACE_ENTRY();
sk = conn->sock->sk;
switch (sk->sk_family) {
case AF_INET:
pos = scnprintf(buf, size,
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)
"%u.%u.%u.%u", NIPQUAD(inet_sk(sk)->saddr));
#else
"%pI4", &inet_sk(sk)->inet_saddr);
#endif
break;
case AF_INET6:
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
pos = scnprintf(buf, size,
"[%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x]",
NIP6(inet6_sk(sk)->saddr));
#else
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
pos = scnprintf(buf, size, "[%p6]", &inet6_sk(sk)->saddr);
#else
pos = scnprintf(buf, size, "[%p6]", &sk->sk_v6_rcv_saddr);
#endif
#endif
break;
default:
pos = scnprintf(buf, size, "Unknown family %d",
sk->sk_family);
break;
}
TRACE_EXIT_RES(pos);
return pos;
}
static ssize_t iscsi_conn_target_ip_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
int pos;
struct iscsi_conn *conn;
TRACE_ENTRY();
conn = container_of(kobj, struct iscsi_conn, conn_kobj);
pos = iscsi_get_target_ip(conn, buf, SCST_SYSFS_BLOCK_SIZE);
TRACE_EXIT_RES(pos);
return pos;
}
static struct kobj_attribute iscsi_conn_target_ip_attr =
__ATTR(target_ip, S_IRUGO, iscsi_conn_target_ip_show, NULL);
static ssize_t iscsi_conn_cid_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@@ -304,6 +364,14 @@ restart:
goto out_err;
}
res = sysfs_create_file(&conn->conn_kobj,
&iscsi_conn_target_ip_attr.attr);
if (res != 0) {
PRINT_ERROR("Unable create sysfs attribute %s for conn %s",
iscsi_conn_target_ip_attr.attr.name, addr);
goto out_err;
}
out:
TRACE_EXIT_RES(res);
return res;