/* initialize port attributes */
static int rxe_init_port_param(struct rxe_dev *rxe, unsigned int port_num)
{
struct rxe_port *port = &rxe->port[port_num - 1];
port->attr.state = RXE_PORT_STATE;
port->attr.max_mtu = RXE_PORT_MAX_MTU;
port->attr.active_mtu = RXE_PORT_ACTIVE_MTU;
port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN;
port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS;
port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ;
port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR;
port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR;
port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN;
port->attr.lid = RXE_PORT_LID;
port->attr.sm_lid = RXE_PORT_SM_LID;
port->attr.lmc = RXE_PORT_LMC;
port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM;
port->attr.sm_sl = RXE_PORT_SM_SL;
port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT;
port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY;
port->attr.active_width = RXE_PORT_ACTIVE_WIDTH;
port->attr.active_speed = RXE_PORT_ACTIVE_SPEED;
port->attr.phys_state = RXE_PORT_PHYS_STATE;
port->mtu_cap =
rxe_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU);
port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX);
return 0;
}
int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu,
unsigned int port_num)
{
struct rxe_port *port = &rxe->port[port_num - 1];
enum rxe_mtu mtu;
mtu = eth_mtu_int_to_enum(ndev_mtu);
if (!mtu)
return -EINVAL;
/* Set the port mtu to min(feasible, preferred) */
mtu = min_t(enum rxe_mtu, mtu, rxe->pref_mtu);
port->attr.active_mtu = (enum ib_mtu __force)mtu;
port->mtu_cap = rxe_mtu_enum_to_int(mtu);
return 0;
}
/* called by the modify qp verb */
int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
struct ib_udata *udata)
{
int err;
struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
union ib_gid sgid;
struct ib_gid_attr sgid_attr;
/* TODO should handle error by leaving old resources intact */
if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
int max_rd_atomic = __roundup_pow_of_two(attr->max_rd_atomic);
free_rd_atomic_resources(qp);
err = alloc_rd_atomic_resources(qp, max_rd_atomic);
if (err)
return err;
qp->attr.max_rd_atomic = max_rd_atomic;
atomic_set(&qp->req.rd_atomic, max_rd_atomic);
}
if (mask & IB_QP_CUR_STATE)
qp->attr.cur_qp_state = attr->qp_state;
if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify;
if (mask & IB_QP_ACCESS_FLAGS)
qp->attr.qp_access_flags = attr->qp_access_flags;
if (mask & IB_QP_PKEY_INDEX)
qp->attr.pkey_index = attr->pkey_index;
if (mask & IB_QP_PORT)
qp->attr.port_num = attr->port_num;
if (mask & IB_QP_QKEY)
qp->attr.qkey = attr->qkey;
if (mask & IB_QP_AV) {
rcu_read_lock();
ib_get_cached_gid(&rxe->ib_dev, 1,
attr->ah_attr.grh.sgid_index, &sgid,
&sgid_attr);
rcu_read_unlock();
rxe_av_from_attr(rxe, attr->port_num, &qp->pri_av,
&attr->ah_attr);
qp->pri_av.network_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
rxe_av_fill_ip_info(rxe, &qp->pri_av, &attr->ah_attr, &sgid);
}
if (mask & IB_QP_ALT_PATH) {
rcu_read_lock();
ib_get_cached_gid(&rxe->ib_dev, 1,
attr->alt_ah_attr.grh.sgid_index, &sgid,
&sgid_attr);
rcu_read_unlock();
rxe_av_from_attr(rxe, attr->alt_port_num, &qp->alt_av,
&attr->alt_ah_attr);
qp->alt_av.network_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
rxe_av_fill_ip_info(rxe, &qp->alt_av, &attr->alt_ah_attr, &sgid);
qp->attr.alt_port_num = attr->alt_port_num;
qp->attr.alt_pkey_index = attr->alt_pkey_index;
qp->attr.alt_timeout = attr->alt_timeout;
}
if (mask & IB_QP_PATH_MTU) {
qp->attr.path_mtu = attr->path_mtu;
qp->mtu = rxe_mtu_enum_to_int((enum rxe_mtu)attr->path_mtu);
}
if (mask & IB_QP_TIMEOUT) {
qp->attr.timeout = attr->timeout;
if (attr->timeout == 0) {
qp->qp_timeout_jiffies = 0;
} else {
int j = usecs_to_jiffies(4ULL << attr->timeout);
qp->qp_timeout_jiffies = j ? j : 1;
}
}
if (mask & IB_QP_RETRY_CNT) {
qp->attr.retry_cnt = attr->retry_cnt;
qp->comp.retry_cnt = attr->retry_cnt;
pr_debug("set retry count = %d\n", attr->retry_cnt);
}
if (mask & IB_QP_RNR_RETRY) {
qp->attr.rnr_retry = attr->rnr_retry;
qp->comp.rnr_retry = attr->rnr_retry;
pr_debug("set rnr retry count = %d\n", attr->rnr_retry);
}
if (mask & IB_QP_RQ_PSN) {
qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
qp->resp.psn = qp->attr.rq_psn;
pr_debug("set resp psn = 0x%x\n", qp->resp.psn);
}
if (mask & IB_QP_MIN_RNR_TIMER) {
qp->attr.min_rnr_timer = attr->min_rnr_timer;
pr_debug("set min rnr timer = 0x%x\n",
attr->min_rnr_timer);
}
if (mask & IB_QP_SQ_PSN) {
qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
qp->req.psn = qp->attr.sq_psn;
qp->comp.psn = qp->attr.sq_psn;
pr_debug("set req psn = 0x%x\n", qp->req.psn);
}
if (mask & IB_QP_MAX_DEST_RD_ATOMIC) {
qp->attr.max_dest_rd_atomic =
__roundup_pow_of_two(attr->max_dest_rd_atomic);
}
if (mask & IB_QP_PATH_MIG_STATE)
qp->attr.path_mig_state = attr->path_mig_state;
if (mask & IB_QP_DEST_QPN)
qp->attr.dest_qp_num = attr->dest_qp_num;
if (mask & IB_QP_STATE) {
qp->attr.qp_state = attr->qp_state;
switch (attr->qp_state) {
case IB_QPS_RESET:
pr_debug("qp state -> RESET\n");
rxe_qp_reset(qp);
break;
case IB_QPS_INIT:
pr_debug("qp state -> INIT\n");
qp->req.state = QP_STATE_INIT;
qp->resp.state = QP_STATE_INIT;
break;
case IB_QPS_RTR:
pr_debug("qp state -> RTR\n");
qp->resp.state = QP_STATE_READY;
break;
case IB_QPS_RTS:
pr_debug("qp state -> RTS\n");
qp->req.state = QP_STATE_READY;
break;
case IB_QPS_SQD:
pr_debug("qp state -> SQD\n");
rxe_qp_drain(qp);
break;
case IB_QPS_SQE:
pr_warn("qp state -> SQE !!?\n");
/* Not possible from modify_qp. */
break;
case IB_QPS_ERR:
pr_debug("qp state -> ERR\n");
rxe_qp_error(qp);
break;
}
}
return 0;
}
/* called by the modify qp verb, this routine
checks all the parameters before making any changes */
int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
struct ib_qp_attr *attr, int mask)
{
enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ?
attr->cur_qp_state : qp->attr.qp_state;
enum ib_qp_state new_state = (mask & IB_QP_STATE) ?
attr->qp_state : cur_state;
if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask,
IB_LINK_LAYER_ETHERNET)) {
pr_warn("invalid mask or state for qp\n");
goto err1;
}
if (mask & IB_QP_STATE) {
if (cur_state == IB_QPS_SQD) {
if (qp->req.state == QP_STATE_DRAIN &&
new_state != IB_QPS_ERR)
goto err1;
}
}
if (mask & IB_QP_PORT) {
if (attr->port_num < 1 || attr->port_num > rxe->num_ports) {
pr_warn("invalid port %d\n", attr->port_num);
goto err1;
}
}
if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap,
qp->srq != NULL))
goto err1;
if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr))
goto err1;
if (mask & IB_QP_ALT_PATH && rxe_av_chk_attr(rxe, &attr->alt_ah_attr))
goto err1;
if (mask & IB_QP_PATH_MTU) {
struct rxe_port *port = &rxe->port[qp->attr.port_num - 1];
enum rxe_mtu max_mtu = (enum rxe_mtu __force)port->attr.max_mtu;
enum rxe_mtu mtu = (enum rxe_mtu __force)attr->path_mtu;
if (mtu > max_mtu) {
pr_debug("invalid mtu (%d) > (%d)\n",
rxe_mtu_enum_to_int(mtu),
rxe_mtu_enum_to_int(max_mtu));
goto err1;
}
}
if (mask & IB_QP_MAX_QP_RD_ATOMIC) {
if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) {
pr_warn("invalid max_rd_atomic %d > %d\n",
attr->max_rd_atomic,
rxe->attr.max_qp_rd_atom);
goto err1;
}
}
if (mask & IB_QP_TIMEOUT) {
if (attr->timeout > 31) {
pr_warn("invalid QP timeout %d > 31\n",
attr->timeout);
goto err1;
}
}
return 0;
err1:
return -EINVAL;
}