From mboxrd@z Thu Jan 1 00:00:00 1970 From: michaelc@cs.wisc.edu Subject: [PATCH 18/19] iscsi class, qla4xxx, iscsi_tcp: export local address Date: Wed, 30 May 2007 12:57:24 -0500 Message-ID: <11805478643847-git-send-email-michaelc@cs.wisc.edu> References: <11805478452886-git-send-email-michaelc@cs.wisc.edu> <11805478461587-git-send-email-michaelc@cs.wisc.edu> <11805478472375-git-send-email-michaelc@cs.wisc.edu> <11805478483268-git-send-email-michaelc@cs.wisc.edu> <1180547849438-git-send-email-michaelc@cs.wisc.edu> <11805478511328-git-send-email-michaelc@cs.wisc.edu> <11805478523188-git-send-email-michaelc@cs.wisc.edu> <11805478531743-git-send-email-michaelc@cs.wisc.edu> <11805478543860-git-send-email-michaelc@cs.wisc.edu> <11805478564182-git-send-email-michaelc@cs.wisc.edu> <1180547857548-git-send-email-michaelc@cs.wisc.edu> <118054785852-git-send-email-michaelc@cs.wisc.edu> <11805478592848-git-send-email-michaelc@cs.wisc.edu> <11805478601019-git-send-email-michaelc@cs.wisc.edu> <11805478611832-git-send-email-michaelc@cs.wisc.edu> <11805478623536-git-send-email-michaelc@cs.wisc.edu> <11805478623287-git-send-email-michaelc@cs.w isc.edu> <11805478632103-git-send-email-michaelc@cs.wisc.edu> Reply-To: michaelc@cs.wisc.edu Return-path: Received: from mx1.redhat.com ([66.187.233.31]:51658 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753654AbXE3R5w (ORCPT ); Wed, 30 May 2007 13:57:52 -0400 In-Reply-To: <11805478632103-git-send-email-michaelc@cs.wisc.edu> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: Mike Christie From: Mike Christie This patch exports the local address for the session. For qla4xxx this is the ip of the hba's port. For software this is the src addr of the socket. Signed-off-by: Mike Christie --- drivers/scsi/iscsi_tcp.c | 127 +++++++++++++++++++++++++++-------- drivers/scsi/qla4xxx/ql4_os.c | 8 ++ drivers/scsi/scsi_transport_iscsi.c | 4 + include/scsi/iscsi_if.h | 2 + include/scsi/libiscsi.h | 8 ++ 5 files changed, 118 insertions(+), 31 deletions(-) diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 7ce177e..da66fb5 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -1870,18 +1870,22 @@ tcp_conn_alloc_fail: static void iscsi_tcp_release_conn(struct iscsi_conn *conn) { + struct iscsi_session *session = conn->session; struct iscsi_tcp_conn *tcp_conn = conn->dd_data; + struct socket *sock = tcp_conn->sock; - if (!tcp_conn->sock) + if (!sock) return; - sock_hold(tcp_conn->sock->sk); + sock_hold(sock->sk); iscsi_conn_restore_callbacks(tcp_conn); - sock_put(tcp_conn->sock->sk); + sock_put(sock->sk); - sockfd_put(tcp_conn->sock); + spin_lock_bh(&session->lock); tcp_conn->sock = NULL; conn->recv_lock = NULL; + spin_unlock_bh(&session->lock); + sockfd_put(sock); } static void @@ -1912,6 +1916,46 @@ iscsi_tcp_conn_stop(struct iscsi_cls_con tcp_conn->hdr_size = sizeof(struct iscsi_hdr); } +static int iscsi_tcp_get_addr(struct iscsi_conn *conn, struct socket *sock, + char *buf, int *port, + int (*getname)(struct socket *, struct sockaddr *, + int *addrlen)) +{ + struct sockaddr_storage *addr; + struct sockaddr_in6 *sin6; + struct sockaddr_in *sin; + int rc = 0, len; + + addr = kmalloc(GFP_KERNEL, sizeof(*addr)); + if (!addr) + return -ENOMEM; + + if (getname(sock, (struct sockaddr *) addr, &len)) { + rc = -ENODEV; + goto free_addr; + } + + switch (addr->ss_family) { + case AF_INET: + sin = (struct sockaddr_in *)addr; + spin_lock_bh(&conn->session->lock); + sprintf(buf, NIPQUAD_FMT, NIPQUAD(sin->sin_addr.s_addr)); + *port = be16_to_cpu(sin->sin_port); + spin_unlock_bh(&conn->session->lock); + break; + case AF_INET6: + sin6 = (struct sockaddr_in6 *)addr; + spin_lock_bh(&conn->session->lock); + sprintf(buf, NIP6_FMT, NIP6(sin6->sin6_addr)); + *port = be16_to_cpu(sin6->sin6_port); + spin_unlock_bh(&conn->session->lock); + break; + } +free_addr: + kfree(addr); + return rc; +} + static int iscsi_tcp_conn_bind(struct iscsi_cls_session *cls_session, struct iscsi_cls_conn *cls_conn, uint64_t transport_eph, @@ -1929,10 +1973,24 @@ iscsi_tcp_conn_bind(struct iscsi_cls_ses printk(KERN_ERR "iscsi_tcp: sockfd_lookup failed %d\n", err); return -EEXIST; } + /* + * copy these values now because if we drop the session + * userspace may still want to query the values since we will + * be using them for the reconnect + */ + err = iscsi_tcp_get_addr(conn, sock, conn->portal_address, + &conn->portal_port, kernel_getpeername); + if (err) + goto free_socket; + + err = iscsi_tcp_get_addr(conn, sock, conn->local_address, + &conn->local_port, kernel_getsockname); + if (err) + goto free_socket; err = iscsi_conn_bind(cls_session, cls_conn, is_leading); if (err) - return err; + goto free_socket; /* bind iSCSI connection and socket */ tcp_conn->sock = sock; @@ -1956,8 +2014,11 @@ iscsi_tcp_conn_bind(struct iscsi_cls_ses * set receive state machine into initial state */ tcp_conn->in_progress = IN_PROGRESS_WAIT_HEADER; - return 0; + +free_socket: + sockfd_put(sock); + return err; } /* called with host lock */ @@ -2077,33 +2138,18 @@ iscsi_tcp_conn_get_param(struct iscsi_cl enum iscsi_param param, char *buf) { struct iscsi_conn *conn = cls_conn->dd_data; - struct iscsi_tcp_conn *tcp_conn = conn->dd_data; - struct inet_sock *inet; - struct ipv6_pinfo *np; - struct sock *sk; int len; switch(param) { case ISCSI_PARAM_CONN_PORT: - if (!tcp_conn->sock) - return -EINVAL; - - inet = inet_sk(tcp_conn->sock->sk); - len = sprintf(buf, "%hu\n", be16_to_cpu(inet->dport)); + spin_lock_bh(&conn->session->lock); + len = sprintf(buf, "%hu\n", conn->portal_port); + spin_unlock_bh(&conn->session->lock); break; case ISCSI_PARAM_CONN_ADDRESS: - if (!tcp_conn->sock) - return -EINVAL; - - sk = tcp_conn->sock->sk; - if (sk->sk_family == PF_INET) { - inet = inet_sk(sk); - len = sprintf(buf, NIPQUAD_FMT "\n", - NIPQUAD(inet->daddr)); - } else { - np = inet6_sk(sk); - len = sprintf(buf, NIP6_FMT "\n", NIP6(np->daddr)); - } + spin_lock_bh(&conn->session->lock); + len = sprintf(buf, "%s\n", conn->portal_address); + spin_unlock_bh(&conn->session->lock); break; default: return iscsi_conn_get_param(cls_conn, param, buf); @@ -2112,6 +2158,29 @@ iscsi_tcp_conn_get_param(struct iscsi_cl return len; } +static int +iscsi_tcp_host_get_param(struct Scsi_Host *shost, enum iscsi_host_param param, + char *buf) +{ + struct iscsi_session *session = iscsi_hostdata(shost->hostdata); + int len; + + switch (param) { + case ISCSI_HOST_PARAM_IPADDRESS: + spin_lock_bh(&session->lock); + if (!session->leadconn) + len = -ENODEV; + else + len = sprintf(buf, "%s\n", + session->leadconn->local_address); + spin_unlock_bh(&session->lock); + break; + default: + return iscsi_host_get_param(shost, param, buf); + } + return len; +} + static void iscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *stats) { @@ -2233,7 +2302,7 @@ static struct iscsi_transport iscsi_tcp_ ISCSI_TARGET_NAME | ISCSI_TPGT | ISCSI_USERNAME | ISCSI_PASSWORD | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN, - .host_param_mask = ISCSI_HOST_HWADDRESS | + .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS | ISCSI_HOST_INITIATOR_NAME, .host_template = &iscsi_sht, .conndata_size = sizeof(struct iscsi_conn), @@ -2252,7 +2321,7 @@ static struct iscsi_transport iscsi_tcp_ .start_conn = iscsi_conn_start, .stop_conn = iscsi_tcp_conn_stop, /* iscsi host params */ - .get_host_param = iscsi_host_get_param, + .get_host_param = iscsi_tcp_host_get_param, .set_host_param = iscsi_host_set_param, /* IO */ .send_pdu = iscsi_conn_send_pdu, diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index 315ab69..b87b460 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -106,6 +106,7 @@ static struct iscsi_transport qla4xxx_is .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | ISCSI_TARGET_NAME | ISCSI_TPGT, .host_param_mask = ISCSI_HOST_HWADDRESS | + ISCSI_HOST_IPADDRESS | ISCSI_HOST_INITIATOR_NAME, .sessiondata_size = sizeof(struct ddb_entry), .host_template = &qla4xxx_driver_template, @@ -192,8 +193,13 @@ static int qla4xxx_host_get_param(struct case ISCSI_HOST_PARAM_HWADDRESS: len = format_addr(buf, ha->my_mac, MAC_ADDR_LEN); break; + case ISCSI_HOST_PARAM_IPADDRESS: + len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], + ha->ip_address[1], ha->ip_address[2], + ha->ip_address[3]); + break; case ISCSI_HOST_PARAM_INITIATOR_NAME: - len = sprintf(buf, ha->name_string); + len = sprintf(buf, "%s\n", ha->name_string); break; default: return -ENOSYS; diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index 859bd21..9b54eea 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -32,7 +32,7 @@ #include #define ISCSI_SESSION_ATTRS 15 #define ISCSI_CONN_ATTRS 11 -#define ISCSI_HOST_ATTRS 2 +#define ISCSI_HOST_ATTRS 3 #define ISCSI_TRANSPORT_VERSION "2.0-724" struct iscsi_internal { @@ -1261,6 +1261,7 @@ #define iscsi_host_attr(field, param) static ISCSI_CLASS_ATTR(host, field, S_IRUGO, show_host_param_##param, \ NULL); +iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS); iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS); iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME); @@ -1398,6 +1399,7 @@ iscsi_register_transport(struct iscsi_tr priv->t.host_size = sizeof(struct iscsi_host); transport_container_register(&priv->t.host_attrs); + SETUP_HOST_RD_ATTR(ipaddress, ISCSI_HOST_IPADDRESS); SETUP_HOST_RD_ATTR(hwaddress, ISCSI_HOST_HWADDRESS); SETUP_HOST_RD_ATTR(initiatorname, ISCSI_HOST_INITIATOR_NAME); BUG_ON(count > ISCSI_HOST_ATTRS); diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h index 81a5425..6429980 100644 --- a/include/scsi/iscsi_if.h +++ b/include/scsi/iscsi_if.h @@ -271,11 +271,13 @@ #define ISCSI_PASSWORD_IN (1 << ISCSI_P enum iscsi_host_param { ISCSI_HOST_PARAM_HWADDRESS, ISCSI_HOST_PARAM_INITIATOR_NAME, + ISCSI_HOST_PARAM_IPADDRESS, ISCSI_HOST_PARAM_MAX, }; #define ISCSI_HOST_HWADDRESS (1 << ISCSI_HOST_PARAM_HWADDRESS) #define ISCSI_HOST_INITIATOR_NAME (1 << ISCSI_HOST_PARAM_INITIATOR_NAME) +#define ISCSI_HOST_IPADDRESS (1 << ISCSI_HOST_PARAM_IPADDRESS) #define iscsi_ptr(_handle) ((void*)(unsigned long)_handle) #define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr) diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 2f303a3..eea33f7 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -72,6 +72,8 @@ #define ISCSI_CID_MASK (0xffff << ISCS #define ISCSI_AGE_SHIFT 28 #define ISCSI_AGE_MASK (0xf << ISCSI_AGE_SHIFT) +#define ISCSI_ADDRESS_BUF_LEN 64 + struct iscsi_mgmt_task { /* * Becuae LLDs allocate their hdr differently, this is a pointer to @@ -174,6 +176,12 @@ struct iscsi_conn { /* values userspace uses to id a conn */ int persistent_port; char *persistent_address; + /* remote portal currently connected to */ + int portal_port; + char portal_address[ISCSI_ADDRESS_BUF_LEN]; + /* local address */ + int local_port; + char local_address[ISCSI_ADDRESS_BUF_LEN]; /* MIB-statistics */ uint64_t txdata_octets; -- 1.4.1.1