Orange Pi5 kernel

Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
*/
#include "rxe.h"
#include "rxe_loc.h"
int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid,
<------><------> struct rxe_mc_grp **grp_p)
{
<------>int err;
<------>struct rxe_mc_grp *grp;
<------>if (rxe->attr.max_mcast_qp_attach == 0) {
<------><------>err = -EINVAL;
<------><------>goto err1;
<------>}
<------>grp = rxe_pool_get_key(&rxe->mc_grp_pool, mgid);
<------>if (grp)
<------><------>goto done;
<------>grp = rxe_alloc(&rxe->mc_grp_pool);
<------>if (!grp) {
<------><------>err = -ENOMEM;
<------><------>goto err1;
<------>}
<------>INIT_LIST_HEAD(&grp->qp_list);
<------>spin_lock_init(&grp->mcg_lock);
<------>grp->rxe = rxe;
<------>rxe_add_key(grp, mgid);
<------>err = rxe_mcast_add(rxe, mgid);
<------>if (err)
<------><------>goto err2;
done:
<------>*grp_p = grp;
<------>return 0;
err2:
<------>rxe_drop_ref(grp);
err1:
<------>return err;
}
int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
<------><------><------> struct rxe_mc_grp *grp)
{
<------>int err;
<------>struct rxe_mc_elem *elem;
<------>/* check to see of the qp is already a member of the group */
<------>spin_lock_bh(&qp->grp_lock);
<------>spin_lock_bh(&grp->mcg_lock);
<------>list_for_each_entry(elem, &grp->qp_list, qp_list) {
<------><------>if (elem->qp == qp) {
<------><------><------>err = 0;
<------><------><------>goto out;
<------><------>}
<------>}
<------>if (grp->num_qp >= rxe->attr.max_mcast_qp_attach) {
<------><------>err = -ENOMEM;
<------><------>goto out;
<------>}
<------>elem = rxe_alloc(&rxe->mc_elem_pool);
<------>if (!elem) {
<------><------>err = -ENOMEM;
<------><------>goto out;
<------>}
<------>/* each qp holds a ref on the grp */
<------>rxe_add_ref(grp);
<------>grp->num_qp++;
<------>elem->qp = qp;
<------>elem->grp = grp;
<------>list_add(&elem->qp_list, &grp->qp_list);
<------>list_add(&elem->grp_list, &qp->grp_list);
<------>err = 0;
out:
<------>spin_unlock_bh(&grp->mcg_lock);
<------>spin_unlock_bh(&qp->grp_lock);
<------>return err;
}
int rxe_mcast_drop_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
<------><------><------> union ib_gid *mgid)
{
<------>struct rxe_mc_grp *grp;
<------>struct rxe_mc_elem *elem, *tmp;
<------>grp = rxe_pool_get_key(&rxe->mc_grp_pool, mgid);
<------>if (!grp)
<------><------>goto err1;
<------>spin_lock_bh(&qp->grp_lock);
<------>spin_lock_bh(&grp->mcg_lock);
<------>list_for_each_entry_safe(elem, tmp, &grp->qp_list, qp_list) {
<------><------>if (elem->qp == qp) {
<------><------><------>list_del(&elem->qp_list);
<------><------><------>list_del(&elem->grp_list);
<------><------><------>grp->num_qp--;
<------><------><------>spin_unlock_bh(&grp->mcg_lock);
<------><------><------>spin_unlock_bh(&qp->grp_lock);
<------><------><------>rxe_drop_ref(elem);
<------><------><------>rxe_drop_ref(grp); /* ref held by QP */
<------><------><------>rxe_drop_ref(grp); /* ref from get_key */
<------><------><------>return 0;
<------><------>}
<------>}
<------>spin_unlock_bh(&grp->mcg_lock);
<------>spin_unlock_bh(&qp->grp_lock);
<------>rxe_drop_ref(grp); /* ref from get_key */
err1:
<------>return -EINVAL;
}
void rxe_drop_all_mcast_groups(struct rxe_qp *qp)
{
<------>struct rxe_mc_grp *grp;
<------>struct rxe_mc_elem *elem;
<------>while (1) {
<------><------>spin_lock_bh(&qp->grp_lock);
<------><------>if (list_empty(&qp->grp_list)) {
<------><------><------>spin_unlock_bh(&qp->grp_lock);
<------><------><------>break;
<------><------>}
<------><------>elem = list_first_entry(&qp->grp_list, struct rxe_mc_elem,
<------><------><------><------><------>grp_list);
<------><------>list_del(&elem->grp_list);
<------><------>spin_unlock_bh(&qp->grp_lock);
<------><------>grp = elem->grp;
<------><------>spin_lock_bh(&grp->mcg_lock);
<------><------>list_del(&elem->qp_list);
<------><------>grp->num_qp--;
<------><------>spin_unlock_bh(&grp->mcg_lock);
<------><------>rxe_drop_ref(grp);
<------><------>rxe_drop_ref(elem);
<------>}
}
void rxe_mc_cleanup(struct rxe_pool_entry *arg)
{
<------>struct rxe_mc_grp *grp = container_of(arg, typeof(*grp), pelem);
<------>struct rxe_dev *rxe = grp->rxe;
<------>rxe_drop_key(grp);
<------>rxe_mcast_delete(rxe, &grp->mgid);
}