target/iscsi: Fix np_ip bracket issue by removing np_ip

commit 76c28f1fcfeb42b47f798fe498351ee1d60086ae upstream.

Revert commit 1997e6259, which causes double brackets on ipv6
inaddr_any addresses.

Since we have np_sockaddr, if we need a textual representation we can
use "%pISc".

Change iscsit_add_network_portal() and iscsit_add_np() signatures to remove
*ip_str parameter.

Fix and extend some comments earlier in the function.

Tested to work for :: and ::1 via iscsiadm, previously :: failed, see
https://bugzilla.redhat.com/show_bug.cgi?id=1249107 .

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 0ab6e2e..330bbe8 100644 (file)
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -341,7 +341,6 @@ static struct iscsi_np *iscsit_get_np(
 
 struct iscsi_np *iscsit_add_np(
        struct __kernel_sockaddr_storage *sockaddr,
-       char *ip_str,
        int network_transport)
 {
        struct sockaddr_in *sock_in;
@@ -370,11 +369,9 @@ struct iscsi_np *iscsit_add_np(
        np->np_flags |= NPF_IP_NETWORK;
        if (sockaddr->ss_family == AF_INET6) {
                sock_in6 = (struct sockaddr_in6 *)sockaddr;
-               snprintf(np->np_ip, IPV6_ADDRESS_SPACE, "%s", ip_str);
                np->np_port = ntohs(sock_in6->sin6_port);
        } else {
                sock_in = (struct sockaddr_in *)sockaddr;
-               sprintf(np->np_ip, "%s", ip_str);
                np->np_port = ntohs(sock_in->sin_port);
        }
 
@@ -411,8 +408,8 @@ struct iscsi_np *iscsit_add_np(
        list_add_tail(&np->np_list, &g_np_list);
        mutex_unlock(&np_lock);
 
-       pr_debug("CORE[0] - Added Network Portal: %s:%hu on %s\n",
-               np->np_ip, np->np_port, np->np_transport->name);
+       pr_debug("CORE[0] - Added Network Portal: %pISc:%hu on %s\n",
+               &np->np_sockaddr, np->np_port, np->np_transport->name);
 
        return np;
 }
@@ -481,8 +478,8 @@ int iscsit_del_np(struct iscsi_np *np)
        list_del(&np->np_list);
        mutex_unlock(&np_lock);
 
-       pr_debug("CORE[0] - Removed Network Portal: %s:%hu on %s\n",
-               np->np_ip, np->np_port, np->np_transport->name);
+       pr_debug("CORE[0] - Removed Network Portal: %pISc:%hu on %s\n",
+               &np->np_sockaddr, np->np_port, np->np_transport->name);
 
        iscsit_put_transport(np->np_transport);
        kfree(np);
@@ -3467,7 +3464,6 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
                                                tpg_np_list) {
                                struct iscsi_np *np = tpg_np->tpg_np;
                                bool inaddr_any = iscsit_check_inaddr_any(np);
-                               char *fmt_str;
 
                                if (np->np_network_transport != network_transport)
                                        continue;
@@ -3495,15 +3491,18 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
                                        }
                                }
 
-                               if (np->np_sockaddr.ss_family == AF_INET6)
-                                       fmt_str = "TargetAddress=[%s]:%hu,%hu";
-                               else
-                                       fmt_str = "TargetAddress=%s:%hu,%hu";
-
-                               len = sprintf(buf, fmt_str,
-                                       inaddr_any ? conn->local_ip : np->np_ip,
-                                       np->np_port,
-                                       tpg->tpgt);
+                               if (inaddr_any) {
+                                       len = sprintf(buf, "TargetAddress="
+                                                     "%s:%hu,%hu",
+                                                     conn->local_ip,
+                                                     np->np_port,
+                                                     tpg->tpgt);
+                               } else {
+                                       len = sprintf(buf, "TargetAddress="
+                                                     "%pISpc,%hu",
+                                                     &np->np_sockaddr,
+                                                     tpg->tpgt);
+                               }
                                len += 1;
 
                                if ((len + payload_len) > buffer_len) {

diff --git a/drivers/target/iscsi/iscsi_target.h b/drivers/target/iscsi/iscsi_target.h
index 7d0f9c0..d294f03 100644 (file)
--- a/drivers/target/iscsi/iscsi_target.h
+++ b/drivers/target/iscsi/iscsi_target.h
@@ -13,7 +13,7 @@ extern int iscsit_deaccess_np(struct iscsi_np *, struct iscsi_portal_group *,
 extern bool iscsit_check_np_match(struct __kernel_sockaddr_storage *,
                                struct iscsi_np *, int);
 extern struct iscsi_np *iscsit_add_np(struct __kernel_sockaddr_storage *,
-                               char *, int);
+                               int);
 extern int iscsit_reset_np_thread(struct iscsi_np *, struct iscsi_tpg_np *,
                                struct iscsi_portal_group *, bool);
 extern int iscsit_del_np(struct iscsi_np *);

diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 469fce4..6f2fb54 100644 (file)
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -100,7 +100,7 @@ static ssize_t lio_target_np_store_sctp(
                 * Use existing np->np_sockaddr for SCTP network portal reference
                 */
                tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
-                                       np->np_ip, tpg_np, ISCSI_SCTP_TCP);
+                                       tpg_np, ISCSI_SCTP_TCP);
                if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
                        goto out;
        } else {
@@ -178,7 +178,7 @@ static ssize_t lio_target_np_store_iser(
                }
 
                tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
-                               np->np_ip, tpg_np, ISCSI_INFINIBAND);
+                               tpg_np, ISCSI_INFINIBAND);
                if (IS_ERR(tpg_np_iser)) {
                        rc = PTR_ERR(tpg_np_iser);
                        goto out;
@@ -249,8 +249,8 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
                        return ERR_PTR(-EINVAL);
                }
                str++; /* Skip over leading "[" */
-               *str2 = '\0'; /* Terminate the IPv6 address */
-               str2++; /* Skip over the "]" */
+               *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
+               str2++; /* Skip over the \0 */
                port_str = strstr(str2, ":");
                if (!port_str) {
                        pr_err("Unable to locate \":port\""
@@ -317,7 +317,7 @@ static struct se_tpg_np *lio_target_call_addnptotpg(
         * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
         *
         */
-       tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
+       tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
                                ISCSI_TCP);
        if (IS_ERR(tpg_np)) {
                iscsit_put_tpg(tpg);
@@ -345,8 +345,8 @@ static void lio_target_call_delnpfromtpg(
 
        se_tpg = &tpg->tpg_se_tpg;
        pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
-               " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
-               tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
+               " PORTAL: %pISc:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
+               tpg->tpgt, &tpg_np->tpg_np->np_sockaddr, tpg_np->tpg_np->np_port);
 
        ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
        if (ret < 0)

diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index c3bccad..39654e9 100644 (file)
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -879,8 +879,8 @@ static void iscsi_handle_login_thread_timeout(unsigned long data)
        struct iscsi_np *np = (struct iscsi_np *) data;
 
        spin_lock_bh(&np->np_thread_lock);
-       pr_err("iSCSI Login timeout on Network Portal %s:%hu\n",
-                       np->np_ip, np->np_port);
+       pr_err("iSCSI Login timeout on Network Portal %pISc:%hu\n",
+                       &np->np_sockaddr, np->np_port);
 
        if (np->np_login_timer_flags & ISCSI_TF_STOP) {
                spin_unlock_bh(&np->np_thread_lock);
@@ -1358,8 +1358,8 @@ static int __iscsi_target_login_thread(struct iscsi_np *np)
        spin_lock_bh(&np->np_thread_lock);
        if (np->np_thread_state != ISCSI_NP_THREAD_ACTIVE) {
                spin_unlock_bh(&np->np_thread_lock);
-               pr_err("iSCSI Network Portal on %s:%hu currently not"
-                       " active.\n", np->np_ip, np->np_port);
+               pr_err("iSCSI Network Portal on %pISc:%hu currently not"
+                       " active.\n", &np->np_sockaddr, np->np_port);
                iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
                                ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE);
                goto new_sess_out;

diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
index 5e3295f..3bc7d62 100644 (file)
--- a/drivers/target/iscsi/iscsi_target_tpg.c
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -460,7 +460,6 @@ static bool iscsit_tpg_check_network_portal(
 struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
        struct iscsi_portal_group *tpg,
        struct __kernel_sockaddr_storage *sockaddr,
-       char *ip_str,
        struct iscsi_tpg_np *tpg_np_parent,
        int network_transport)
 {
@@ -470,8 +469,8 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
        if (!tpg_np_parent) {
                if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
                                network_transport)) {
-                       pr_err("Network Portal: %s already exists on a"
-                               " different TPG on %s\n", ip_str,
+                       pr_err("Network Portal: %pISc already exists on a"
+                               " different TPG on %s\n", sockaddr,
                                tpg->tpg_tiqn->tiqn);
                        return ERR_PTR(-EEXIST);
                }
@@ -484,7 +483,7 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
                return ERR_PTR(-ENOMEM);
        }
 
-       np = iscsit_add_np(sockaddr, ip_str, network_transport);
+       np = iscsit_add_np(sockaddr, network_transport);
        if (IS_ERR(np)) {
                kfree(tpg_np);
                return ERR_CAST(np);
@@ -514,8 +513,8 @@ struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
                spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
        }
 
-       pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n",
-               tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
+       pr_debug("CORE[%s] - Added Network Portal: %pISc:%hu,%hu on %s\n",
+               tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
                np->np_transport->name);
 
        return tpg_np;
@@ -528,8 +527,8 @@ static int iscsit_tpg_release_np(
 {
        iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);
 
-       pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n",
-               tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
+       pr_debug("CORE[%s] - Removed Network Portal: %pISc:%hu,%hu on %s\n",
+               tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
                np->np_transport->name);
 
        tpg_np->tpg_np = NULL;

diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h
index 95ff5bd..28abda8 100644 (file)
--- a/drivers/target/iscsi/iscsi_target_tpg.h
+++ b/drivers/target/iscsi/iscsi_target_tpg.h
@@ -22,7 +22,7 @@ extern struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(struct iscsi_session
 extern void iscsit_tpg_del_external_nps(struct iscsi_tpg_np *);
 extern struct iscsi_tpg_np *iscsit_tpg_locate_child_np(struct iscsi_tpg_np *, int);
 extern struct iscsi_tpg_np *iscsit_tpg_add_network_portal(struct iscsi_portal_group *,
-                       struct __kernel_sockaddr_storage *, char *, struct iscsi_tpg_np *,
+                       struct __kernel_sockaddr_storage *, struct iscsi_tpg_np *,
                        int);
 extern int iscsit_tpg_del_network_portal(struct iscsi_portal_group *,
                        struct iscsi_tpg_np *);

diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h
index 73abbc5..7bd03f8 100644 (file)
--- a/include/target/iscsi/iscsi_target_core.h
+++ b/include/target/iscsi/iscsi_target_core.h
@@ -787,7 +787,6 @@ struct iscsi_np {
        enum iscsi_timer_flags_table np_login_timer_flags;
        u32                     np_exports;
        enum np_flags_table     np_flags;
-       unsigned char           np_ip[IPV6_ADDRESS_SPACE];
        u16                     np_port;
        spinlock_t              np_thread_lock;
        struct completion       np_restart_comp;