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Remove ISCSI_MAX_DATA_SEGMENT_LENGTH, using negotiated value.

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MFC after:	2 weeks
This commit is contained in:
Alexander Motin 2017-01-20 17:14:10 +00:00
parent d6a85ec2ee
commit 625571de20
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=312543
1 changed files with 27 additions and 23 deletions
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50
usr.sbin/iscsid/pdu.c
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@ -106,13 +106,15 @@ pdu_new_response(struct pdu *request)
static void
pdu_receive_proxy(struct pdu *pdu)
{
struct connection *conn;
struct iscsi_daemon_receive *idr;
size_t len;
int error;
assert(pdu->pdu_connection->conn_conf.isc_iser != 0);
conn = pdu->pdu_connection;
assert(conn->conn_conf.isc_iser != 0);
pdu->pdu_data = malloc(ISCSI_MAX_DATA_SEGMENT_LENGTH);
pdu->pdu_data = malloc(conn->conn_max_recv_data_segment_length);
if (pdu->pdu_data == NULL)
log_err(1, "malloc");
@ -120,12 +122,12 @@ pdu_receive_proxy(struct pdu *pdu)
if (idr == NULL)
log_err(1, "calloc");
idr->idr_session_id = pdu->pdu_connection->conn_session_id;
idr->idr_session_id = conn->conn_session_id;
idr->idr_bhs = pdu->pdu_bhs;
idr->idr_data_segment_len = ISCSI_MAX_DATA_SEGMENT_LENGTH;
idr->idr_data_segment_len = conn->conn_max_recv_data_segment_length;
idr->idr_data_segment = pdu->pdu_data;
error = ioctl(pdu->pdu_connection->conn_iscsi_fd, ISCSIDRECEIVE, idr);
error = ioctl(conn->conn_iscsi_fd, ISCSIDRECEIVE, idr);
if (error != 0)
log_err(1, "ISCSIDRECEIVE");
@ -134,7 +136,7 @@ pdu_receive_proxy(struct pdu *pdu)
log_errx(1, "protocol error: non-empty AHS");
len = pdu_data_segment_length(pdu);
assert(len <= ISCSI_MAX_DATA_SEGMENT_LENGTH);
assert(len <= (size_t)conn->conn_max_recv_data_segment_length);
pdu->pdu_data_len = len;
free(idr);
@ -143,10 +145,12 @@ pdu_receive_proxy(struct pdu *pdu)
static void
pdu_send_proxy(struct pdu *pdu)
{
struct connection *conn;
struct iscsi_daemon_send *ids;
int error;
assert(pdu->pdu_connection->conn_conf.isc_iser != 0);
conn = pdu->pdu_connection;
assert(conn->conn_conf.isc_iser != 0);
pdu_set_data_segment_length(pdu, pdu->pdu_data_len);
@ -154,12 +158,12 @@ pdu_send_proxy(struct pdu *pdu)
if (ids == NULL)
log_err(1, "calloc");
ids->ids_session_id = pdu->pdu_connection->conn_session_id;
ids->ids_session_id = conn->conn_session_id;
ids->ids_bhs = pdu->pdu_bhs;
ids->ids_data_segment_len = pdu->pdu_data_len;
ids->ids_data_segment = pdu->pdu_data;
error = ioctl(pdu->pdu_connection->conn_iscsi_fd, ISCSIDSEND, ids);
error = ioctl(conn->conn_iscsi_fd, ISCSIDSEND, ids);
if (error != 0)
log_err(1, "ISCSIDSEND");
@ -204,18 +208,18 @@ pdu_read(const struct connection *conn, char *data, size_t len)
void
pdu_receive(struct pdu *pdu)
{
struct connection *conn;
size_t len, padding;
char dummy[4];
conn = pdu->pdu_connection;
#ifdef ICL_KERNEL_PROXY
if (pdu->pdu_connection->conn_conf.isc_iser != 0)
if (conn->conn_conf.isc_iser != 0)
return (pdu_receive_proxy(pdu));
#endif
assert(conn->conn_conf.isc_iser == 0);
assert(pdu->pdu_connection->conn_conf.isc_iser == 0);
pdu_read(pdu->pdu_connection,
(char *)pdu->pdu_bhs, sizeof(*pdu->pdu_bhs));
pdu_read(conn, (char *)pdu->pdu_bhs, sizeof(*pdu->pdu_bhs));
len = pdu_ahs_length(pdu);
if (len > 0)
@ -223,10 +227,10 @@ pdu_receive(struct pdu *pdu)
len = pdu_data_segment_length(pdu);
if (len > 0) {
if (len > ISCSI_MAX_DATA_SEGMENT_LENGTH) {
if (len > (size_t)conn->conn_max_recv_data_segment_length) {
log_errx(1, "protocol error: received PDU "
"with DataSegmentLength exceeding %d",
ISCSI_MAX_DATA_SEGMENT_LENGTH);
conn->conn_max_recv_data_segment_length);
}
pdu->pdu_data_len = len;
@ -234,14 +238,12 @@ pdu_receive(struct pdu *pdu)
if (pdu->pdu_data == NULL)
log_err(1, "malloc");
pdu_read(pdu->pdu_connection,
(char *)pdu->pdu_data, pdu->pdu_data_len);
pdu_read(conn, (char *)pdu->pdu_data, pdu->pdu_data_len);
padding = pdu_padding(pdu);
if (padding != 0) {
assert(padding < sizeof(dummy));
pdu_read(pdu->pdu_connection,
(char *)dummy, padding);
pdu_read(conn, (char *)dummy, padding);
}
}
}
@ -249,18 +251,20 @@ pdu_receive(struct pdu *pdu)
void
pdu_send(struct pdu *pdu)
{
struct connection *conn;
ssize_t ret, total_len;
size_t padding;
uint32_t zero = 0;
struct iovec iov[3];
int iovcnt;
conn = pdu->pdu_connection;
#ifdef ICL_KERNEL_PROXY
if (pdu->pdu_connection->conn_conf.isc_iser != 0)
if (conn->conn_conf.isc_iser != 0)
return (pdu_send_proxy(pdu));
#endif
assert(pdu->pdu_connection->conn_conf.isc_iser == 0);
assert(conn->conn_conf.isc_iser == 0);
pdu_set_data_segment_length(pdu, pdu->pdu_data_len);
iov[0].iov_base = pdu->pdu_bhs;
@ -284,7 +288,7 @@ pdu_send(struct pdu *pdu)
}
}
ret = writev(pdu->pdu_connection->conn_socket, iov, iovcnt);
ret = writev(conn->conn_socket, iov, iovcnt);
if (ret < 0) {
if (timed_out())
log_errx(1, "exiting due to timeout");