static void
pdu_send_proxy(struct pdu *pdu)
{
struct iscsi_daemon_send *ids;
int error;
assert(pdu->pdu_connection->conn_conf.isc_iser != 0);
pdu_set_data_segment_length(pdu, pdu->pdu_data_len);
ids = calloc(1, sizeof(*ids));
if (ids == NULL)
log_err(1, "calloc");
ids->ids_session_id = pdu->pdu_connection->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);
if (error != 0)
log_err(1, "ISCSIDSEND");
free(ids);
}
static void
pdu_send_proxy(struct pdu *pdu)
{
assert(proxy_mode);
pdu_set_data_segment_length(pdu, pdu->pdu_data_len);
kernel_send(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 (conn->conn_conf.isc_iser != 0)
return (pdu_send_proxy(pdu));
#endif
assert(conn->conn_conf.isc_iser == 0);
pdu_set_data_segment_length(pdu, pdu->pdu_data_len);
iov[0].iov_base = pdu->pdu_bhs;
iov[0].iov_len = sizeof(*pdu->pdu_bhs);
total_len = iov[0].iov_len;
iovcnt = 1;
if (pdu->pdu_data_len > 0) {
iov[1].iov_base = pdu->pdu_data;
iov[1].iov_len = pdu->pdu_data_len;
total_len += iov[1].iov_len;
iovcnt = 2;
padding = pdu_padding(pdu);
if (padding > 0) {
assert(padding < sizeof(zero));
iov[2].iov_base = &zero;
iov[2].iov_len = padding;
total_len += iov[2].iov_len;
iovcnt = 3;
}
}
ret = writev(conn->conn_socket, iov, iovcnt);
if (ret < 0) {
if (timed_out())
log_errx(1, "exiting due to timeout");
log_err(1, "writev");
}
if (ret != total_len)
log_errx(1, "short write");
}