diff options
-rw-r--r-- | drivers/scsi/scsi_transport_iscsi.c | 101 | ||||
-rw-r--r-- | include/scsi/iscsi_if.h | 29 | ||||
-rw-r--r-- | include/scsi/scsi_transport_iscsi.h | 4 |
3 files changed, 133 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index a20f1813cb51..7bf0dec46271 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -727,10 +727,11 @@ static void iscsi_session_release(struct device *dev) kfree(session); } -static int iscsi_is_session_dev(const struct device *dev) +int iscsi_is_session_dev(const struct device *dev) { return dev->release == iscsi_session_release; } +EXPORT_SYMBOL_GPL(iscsi_is_session_dev); static int iscsi_iter_session_fn(struct device *dev, void *data) { @@ -2002,6 +2003,96 @@ iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev) } static int +iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh) +{ + struct iscsi_uevent *ev = NLMSG_DATA(nlh); + struct Scsi_Host *shost = NULL; + struct iscsi_chap_rec *chap_rec; + struct iscsi_internal *priv; + struct sk_buff *skbchap; + struct nlmsghdr *nlhchap; + struct iscsi_uevent *evchap; + uint32_t chap_buf_size; + int len, err = 0; + char *buf; + + if (!transport->get_chap) + return -EINVAL; + + priv = iscsi_if_transport_lookup(transport); + if (!priv) + return -EINVAL; + + chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec)); + len = NLMSG_SPACE(sizeof(*ev) + chap_buf_size); + + shost = scsi_host_lookup(ev->u.get_chap.host_no); + if (!shost) { + printk(KERN_ERR "%s: failed. Cound not find host no %u\n", + __func__, ev->u.get_chap.host_no); + return -ENODEV; + } + + do { + int actual_size; + + skbchap = alloc_skb(len, GFP_KERNEL); + if (!skbchap) { + printk(KERN_ERR "can not deliver chap: OOM\n"); + err = -ENOMEM; + goto exit_get_chap; + } + + nlhchap = __nlmsg_put(skbchap, 0, 0, 0, + (len - sizeof(*nlhchap)), 0); + evchap = NLMSG_DATA(nlhchap); + memset(evchap, 0, sizeof(*evchap)); + evchap->transport_handle = iscsi_handle(transport); + evchap->type = nlh->nlmsg_type; + evchap->u.get_chap.host_no = ev->u.get_chap.host_no; + evchap->u.get_chap.chap_tbl_idx = ev->u.get_chap.chap_tbl_idx; + evchap->u.get_chap.num_entries = ev->u.get_chap.num_entries; + buf = (char *) ((char *)evchap + sizeof(*evchap)); + memset(buf, 0, chap_buf_size); + + err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx, + &evchap->u.get_chap.num_entries, buf); + + actual_size = NLMSG_SPACE(sizeof(*ev) + chap_buf_size); + skb_trim(skbchap, NLMSG_ALIGN(actual_size)); + nlhchap->nlmsg_len = actual_size; + + err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID, + GFP_KERNEL); + } while (err < 0 && err != -ECONNREFUSED); + +exit_get_chap: + scsi_host_put(shost); + return err; +} + +static int iscsi_delete_chap(struct iscsi_transport *transport, + struct iscsi_uevent *ev) +{ + struct Scsi_Host *shost; + int err = 0; + + if (!transport->delete_chap) + return -ENOSYS; + + shost = scsi_host_lookup(ev->u.delete_chap.host_no); + if (!shost) { + printk(KERN_ERR "%s could not find host no %u\n", + __func__, ev->u.delete_chap.host_no); + return -ENODEV; + } + + err = transport->delete_chap(shost, ev->u.delete_chap.chap_tbl_idx); + scsi_host_put(shost); + return err; +} + +static int iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) { int err = 0; @@ -2149,6 +2240,12 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) case ISCSI_UEVENT_PING: err = iscsi_send_ping(transport, ev); break; + case ISCSI_UEVENT_GET_CHAP: + err = iscsi_get_chap(transport, nlh); + break; + case ISCSI_UEVENT_DELETE_CHAP: + err = iscsi_delete_chap(transport, ev); + break; default: err = -ENOSYS; break; @@ -2198,6 +2295,8 @@ iscsi_if_rx(struct sk_buff *skb) */ if (ev->type == ISCSI_UEVENT_GET_STATS && !err) break; + if (ev->type == ISCSI_UEVENT_GET_CHAP && !err) + break; err = iscsi_if_send_reply(group, nlh->nlmsg_seq, nlh->nlmsg_type, 0, 0, ev, sizeof(*ev)); } while (err < 0 && err != -ECONNREFUSED && err != -ESRCH); diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h index 7ff9678b7e79..228a8af05129 100644 --- a/include/scsi/iscsi_if.h +++ b/include/scsi/iscsi_if.h @@ -61,6 +61,8 @@ enum iscsi_uevent_e { ISCSI_UEVENT_PATH_UPDATE = UEVENT_BASE + 20, ISCSI_UEVENT_SET_IFACE_PARAMS = UEVENT_BASE + 21, ISCSI_UEVENT_PING = UEVENT_BASE + 22, + ISCSI_UEVENT_GET_CHAP = UEVENT_BASE + 23, + ISCSI_UEVENT_DELETE_CHAP = UEVENT_BASE + 24, /* up events */ ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1, @@ -196,6 +198,18 @@ struct iscsi_uevent { uint32_t pid; /* unique ping id associated with each ping request */ } iscsi_ping; + struct msg_get_chap { + uint32_t host_no; + uint32_t num_entries; /* number of CHAP entries + * on request, number of + * valid CHAP entries on + * response */ + uint16_t chap_tbl_idx; + } get_chap; + struct msg_delete_chap { + uint32_t host_no; + uint16_t chap_tbl_idx; + } delete_chap; } u; union { /* messages k -> u */ @@ -548,4 +562,19 @@ struct iscsi_stats { __attribute__ ((aligned (sizeof(uint64_t)))); }; +enum chap_type_e { + CHAP_TYPE_OUT, + CHAP_TYPE_IN, +}; + +#define ISCSI_CHAP_AUTH_NAME_MAX_LEN 256 +#define ISCSI_CHAP_AUTH_SECRET_MAX_LEN 256 +struct iscsi_chap_rec { + uint16_t chap_tbl_idx; + enum chap_type_e chap_type; + char username[ISCSI_CHAP_AUTH_NAME_MAX_LEN]; + uint8_t password[ISCSI_CHAP_AUTH_SECRET_MAX_LEN]; + uint8_t password_length; +} __packed; + #endif diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index aede513f99bd..53f0b361d668 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -147,6 +147,9 @@ struct iscsi_transport { int (*send_ping) (struct Scsi_Host *shost, uint32_t iface_num, uint32_t iface_type, uint32_t payload_size, uint32_t pid, struct sockaddr *dst_addr); + int (*get_chap) (struct Scsi_Host *shost, uint16_t chap_tbl_idx, + uint32_t *num_entries, char *buf); + int (*delete_chap) (struct Scsi_Host *shost, uint16_t chap_tbl_idx); }; /* @@ -325,5 +328,6 @@ extern void iscsi_destroy_iface(struct iscsi_iface *iface); extern struct iscsi_iface *iscsi_lookup_iface(int handle); extern char *iscsi_get_port_speed_name(struct Scsi_Host *shost); extern char *iscsi_get_port_state_name(struct Scsi_Host *shost); +extern int iscsi_is_session_dev(const struct device *dev); #endif |