From: Adheer Chandravanshi <[email protected]> For offload iSCSI like qla4xxx, CHAP entries are stored in adapter's flash. This patch adds support to add/update CHAP entries in adapter's flash using iscsi tools, like Open-iSCSI.
Signed-off-by: Adheer Chandravanshi <[email protected]> Signed-off-by: Vikas Chaudhary <[email protected]> --- drivers/scsi/scsi_transport_iscsi.c | 26 ++++++++++++++++++++++++++ include/scsi/iscsi_if.h | 17 +++++++++++++++++ include/scsi/scsi_transport_iscsi.h | 1 + 3 files changed, 44 insertions(+), 0 deletions(-) diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index e4a989f..63a6ca4 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -2744,6 +2744,28 @@ exit_get_chap: return err; } +static int iscsi_set_chap(struct iscsi_transport *transport, + struct iscsi_uevent *ev, uint32_t len) +{ + char *data = (char *)ev + sizeof(*ev); + struct Scsi_Host *shost; + int err = 0; + + if (!transport->set_chap) + return -ENOSYS; + + shost = scsi_host_lookup(ev->u.set_path.host_no); + if (!shost) { + pr_err("%s could not find host no %u\n", + __func__, ev->u.set_path.host_no); + return -ENODEV; + } + + err = transport->set_chap(shost, data, len); + scsi_host_put(shost); + return err; +} + static int iscsi_delete_chap(struct iscsi_transport *transport, struct iscsi_uevent *ev) { @@ -3234,6 +3256,10 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) case ISCSI_UEVENT_LOGOUT_FLASHNODE_SID: err = iscsi_logout_flashnode_sid(transport, ev); break; + case ISCSI_UEVENT_SET_CHAP: + err = iscsi_set_chap(transport, ev, + nlmsg_attrlen(nlh, sizeof(*ev))); + break; default: err = -ENOSYS; break; diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h index 13d81c5..5d6ed6c 100644 --- a/include/scsi/iscsi_if.h +++ b/include/scsi/iscsi_if.h @@ -69,6 +69,7 @@ enum iscsi_uevent_e { ISCSI_UEVENT_LOGIN_FLASHNODE = UEVENT_BASE + 28, ISCSI_UEVENT_LOGOUT_FLASHNODE = UEVENT_BASE + 29, ISCSI_UEVENT_LOGOUT_FLASHNODE_SID = UEVENT_BASE + 30, + ISCSI_UEVENT_SET_CHAP = UEVENT_BASE + 31, /* up events */ ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1, @@ -309,8 +310,16 @@ enum iscsi_param_type { ISCSI_HOST_PARAM, /* iscsi_host_param */ ISCSI_NET_PARAM, /* iscsi_net_param */ ISCSI_FLASHNODE_PARAM, /* iscsi_flashnode_param */ + ISCSI_CHAP_PARAM, /* iscsi_chap_param */ }; +/* structure for minimalist usecase */ +struct iscsi_param_info { + uint32_t len; /* Actual length of the param value */ + uint16_t param; /* iscsi param */ + uint8_t value[0]; /* length sized value follows */ +} __packed; + struct iscsi_iface_param_info { uint32_t iface_num; /* iface number, 0 - n */ uint32_t len; /* Actual length of the param */ @@ -739,6 +748,14 @@ enum chap_type_e { CHAP_TYPE_IN, }; +enum iscsi_chap_param { + ISCSI_CHAP_PARAM_INDEX, + ISCSI_CHAP_PARAM_CHAP_TYPE, + ISCSI_CHAP_PARAM_USERNAME, + ISCSI_CHAP_PARAM_PASSWORD, + ISCSI_CHAP_PARAM_PASSWORD_LEN +}; + #define ISCSI_CHAP_AUTH_NAME_MAX_LEN 256 #define ISCSI_CHAP_AUTH_SECRET_MAX_LEN 256 struct iscsi_chap_rec { diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h index d0f1602..fe7c8f3 100644 --- a/include/scsi/scsi_transport_iscsi.h +++ b/include/scsi/scsi_transport_iscsi.h @@ -152,6 +152,7 @@ struct iscsi_transport { 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); + int (*set_chap) (struct Scsi_Host *shost, void *data, int len); int (*get_flashnode_param) (struct iscsi_bus_flash_session *fnode_sess, int param, char *buf); int (*set_flashnode_param) (struct iscsi_bus_flash_session *fnode_sess, -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
