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iscsi: fix ISID interpretation in login requests

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The ISID field is a 6-byte field in network (big-endian) byte order.

The previous code was casting the uint8_t isid[6] value into uint64_t,
which was actually casting the address of the first byte of isid (not
the contents of the array), and it was also not correctly converting
byte order.

Change-Id: Idd114e06d30040cf28931d7da7ffdc8d6c45e82a
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2017-05-02 13:22:00 -07:00
parent b0091cfe5c
commit cce22074a7
1 changed files with 16 additions and 5 deletions
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21
lib/iscsi/iscsi.c
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@ -224,6 +224,17 @@ spdk_gen_random(uint8_t *buf, size_t len)
#endif /* USE_RANDOM */
}
static uint64_t
spdk_iscsi_get_isid(const uint8_t isid[6])
{
return (uint64_t)isid[0] << 40 |
(uint64_t)isid[1] << 32 |
(uint64_t)isid[2] << 24 |
(uint64_t)isid[3] << 16 |
(uint64_t)isid[4] << 8 |
(uint64_t)isid[5];
}
static int
spdk_bin2hex(char *buf, size_t len, const uint8_t *data, size_t data_len)
{
@ -1345,7 +1356,7 @@ spdk_iscsi_op_login_check_session(struct spdk_iscsi_conn *conn,
rsph = (struct iscsi_bhs_login_rsp *) & (rsp_pdu->bhs);
/* check existing session */
SPDK_TRACELOG(SPDK_TRACE_ISCSI, "isid=%"PRIx64", tsih=%u, cid=%u\n",
(uint64_t)rsph->isid, from_be16(&rsph->tsih), cid);
spdk_iscsi_get_isid(rsph->isid), from_be16(&rsph->tsih), cid);
if (rsph->tsih != 0) {
/* multiple connections */
rc = spdk_append_iscsi_sess(conn, initiator_port_name,
@ -1353,7 +1364,7 @@ spdk_iscsi_op_login_check_session(struct spdk_iscsi_conn *conn,
if (rc < 0) {
SPDK_ERRLOG("isid=%"PRIx64", tsih=%u, cid=%u:"
"spdk_append_iscsi_sess() failed\n",
(uint64_t)rsph->isid, from_be16(&rsph->tsih),
spdk_iscsi_get_isid(rsph->isid), from_be16(&rsph->tsih),
cid);
/* Can't include in session */
rsph->status_class = ISCSI_CLASS_INITIATOR_ERROR;
@ -1558,7 +1569,7 @@ spdk_iscsi_op_login_initialize_port(struct spdk_iscsi_conn *conn,
snprintf(conn->initiator_name, sizeof(conn->initiator_name),
"%s", val);
snprintf(initiator_port_name, name_length,
"%s,i,0x%12.12" PRIx64, val, (uint64_t)rsph->isid);
"%s,i,0x%12.12" PRIx64, val, spdk_iscsi_get_isid(rsph->isid));
spdk_strlwr(conn->initiator_name);
spdk_strlwr(initiator_port_name);
SPDK_TRACELOG(SPDK_TRACE_DEBUG, "Initiator name: %s\n",
@ -1603,9 +1614,9 @@ spdk_iscsi_op_login_set_conn_info(struct spdk_iscsi_conn *conn,
/* initialize parameters */
conn->StatSN = from_be32(&rsph->stat_sn);
spdk_scsi_port_construct(&conn->sess->initiator_port,
(uint64_t)rsph->isid, 0,
spdk_iscsi_get_isid(rsph->isid), 0,
initiator_port_name);
conn->sess->isid = (uint64_t)rsph->isid;
conn->sess->isid = spdk_iscsi_get_isid(rsph->isid);
conn->sess->target = target;
/* Discovery sessions will not have a target. */