+++ /dev/null
-/*
- * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
- * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <linux/string.h>
-#include <linux/etherdevice.h>
-
-#include <linux/mlx4/cmd.h>
-
-#include "mlx4.h"
-
-#define MGM_QPN_MASK 0x00FFFFFF
-#define MGM_BLCK_LB_BIT 30
-
-static const u8 zero_gid[16]; /* automatically initialized to 0 */
-
-static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,
- struct mlx4_cmd_mailbox *mailbox)
-{
- return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
- MLX4_CMD_TIME_CLASS_A);
-}
-
-static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index,
- struct mlx4_cmd_mailbox *mailbox)
-{
- return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
- MLX4_CMD_TIME_CLASS_A);
-}
-
-static int mlx4_WRITE_PROMISC(struct mlx4_dev *dev, u8 vep_num, u8 port, u8 steer,
- struct mlx4_cmd_mailbox *mailbox)
-{
- u32 in_mod;
-
- in_mod = (u32) vep_num << 24 | (u32) port << 16 | steer << 1;
- return mlx4_cmd(dev, mailbox->dma, in_mod, 0x1,
- MLX4_CMD_WRITE_MCG, MLX4_CMD_TIME_CLASS_A);
-}
-
-static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
- u16 *hash, u8 op_mod)
-{
- u64 imm;
- int err;
-
- err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod,
- MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A);
-
- if (!err)
- *hash = imm;
-
- return err;
-}
-
-static struct mlx4_promisc_qp *get_promisc_qp(struct mlx4_dev *dev, u8 pf_num,
- enum mlx4_steer_type steer,
- u32 qpn)
-{
- struct mlx4_steer *s_steer = &mlx4_priv(dev)->steer[pf_num];
- struct mlx4_promisc_qp *pqp;
-
- list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
- if (pqp->qpn == qpn)
- return pqp;
- }
- /* not found */
- return NULL;
-}
-
-/*
- * Add new entry to steering data structure.
- * All promisc QPs should be added as well
- */
-static int new_steering_entry(struct mlx4_dev *dev, u8 vep_num, u8 port,
- enum mlx4_steer_type steer,
- unsigned int index, u32 qpn)
-{
- struct mlx4_steer *s_steer;
- struct mlx4_cmd_mailbox *mailbox;
- struct mlx4_mgm *mgm;
- u32 members_count;
- struct mlx4_steer_index *new_entry;
- struct mlx4_promisc_qp *pqp;
- struct mlx4_promisc_qp *dqp = NULL;
- u32 prot;
- int err;
- u8 pf_num;
-
- pf_num = (dev->caps.num_ports == 1) ? vep_num : (vep_num << 1) | (port - 1);
- s_steer = &mlx4_priv(dev)->steer[pf_num];
- new_entry = kzalloc(sizeof *new_entry, GFP_KERNEL);
- if (!new_entry)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&new_entry->duplicates);
- new_entry->index = index;
- list_add_tail(&new_entry->list, &s_steer->steer_entries[steer]);
-
- /* If the given qpn is also a promisc qp,
- * it should be inserted to duplicates list
- */
- pqp = get_promisc_qp(dev, pf_num, steer, qpn);
- if (pqp) {
- dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
- if (!dqp) {
- err = -ENOMEM;
- goto out_alloc;
- }
- dqp->qpn = qpn;
- list_add_tail(&dqp->list, &new_entry->duplicates);
- }
-
- /* if no promisc qps for this vep, we are done */
- if (list_empty(&s_steer->promisc_qps[steer]))
- return 0;
-
- /* now need to add all the promisc qps to the new
- * steering entry, as they should also receive the packets
- * destined to this address */
- mailbox = mlx4_alloc_cmd_mailbox(dev);
- if (IS_ERR(mailbox)) {
- err = -ENOMEM;
- goto out_alloc;
- }
- mgm = mailbox->buf;
-
- err = mlx4_READ_ENTRY(dev, index, mailbox);
- if (err)
- goto out_mailbox;
-
- members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
- prot = be32_to_cpu(mgm->members_count) >> 30;
- list_for_each_entry(pqp, &s_steer->promisc_qps[steer], list) {
- /* don't add already existing qpn */
- if (pqp->qpn == qpn)
- continue;
- if (members_count == MLX4_QP_PER_MGM) {
- /* out of space */
- err = -ENOMEM;
- goto out_mailbox;
- }
-
- /* add the qpn */
- mgm->qp[members_count++] = cpu_to_be32(pqp->qpn & MGM_QPN_MASK);
- }
- /* update the qps count and update the entry with all the promisc qps*/
- mgm->members_count = cpu_to_be32(members_count | (prot << 30));
- err = mlx4_WRITE_ENTRY(dev, index, mailbox);
-
-out_mailbox:
- mlx4_free_cmd_mailbox(dev, mailbox);
- if (!err)
- return 0;
-out_alloc:
- if (dqp) {
- list_del(&dqp->list);
- kfree(dqp);
- }
- list_del(&new_entry->list);
- kfree(new_entry);
- return err;
-}
-
-/* update the data structures with existing steering entry */
-static int existing_steering_entry(struct mlx4_dev *dev, u8 vep_num, u8 port,
- enum mlx4_steer_type steer,
- unsigned int index, u32 qpn)
-{
- struct mlx4_steer *s_steer;
- struct mlx4_steer_index *tmp_entry, *entry = NULL;
- struct mlx4_promisc_qp *pqp;
- struct mlx4_promisc_qp *dqp;
- u8 pf_num;
-
- pf_num = (dev->caps.num_ports == 1) ? vep_num : (vep_num << 1) | (port - 1);
- s_steer = &mlx4_priv(dev)->steer[pf_num];
-
- pqp = get_promisc_qp(dev, pf_num, steer, qpn);
- if (!pqp)
- return 0; /* nothing to do */
-
- list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
- if (tmp_entry->index == index) {
- entry = tmp_entry;
- break;
- }
- }
- if (unlikely(!entry)) {
- mlx4_warn(dev, "Steering entry at index %x is not registered\n", index);
- return -EINVAL;
- }
-
- /* the given qpn is listed as a promisc qpn
- * we need to add it as a duplicate to this entry
- * for future references */
- list_for_each_entry(dqp, &entry->duplicates, list) {
- if (qpn == dqp->qpn)
- return 0; /* qp is already duplicated */
- }
-
- /* add the qp as a duplicate on this index */
- dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
- if (!dqp)
- return -ENOMEM;
- dqp->qpn = qpn;
- list_add_tail(&dqp->list, &entry->duplicates);
-
- return 0;
-}
-
-/* Check whether a qpn is a duplicate on steering entry
- * If so, it should not be removed from mgm */
-static bool check_duplicate_entry(struct mlx4_dev *dev, u8 vep_num, u8 port,
- enum mlx4_steer_type steer,
- unsigned int index, u32 qpn)
-{
- struct mlx4_steer *s_steer;
- struct mlx4_steer_index *tmp_entry, *entry = NULL;
- struct mlx4_promisc_qp *dqp, *tmp_dqp;
- u8 pf_num;
-
- pf_num = (dev->caps.num_ports == 1) ? vep_num : (vep_num << 1) | (port - 1);
- s_steer = &mlx4_priv(dev)->steer[pf_num];
-
- /* if qp is not promisc, it cannot be duplicated */
- if (!get_promisc_qp(dev, pf_num, steer, qpn))
- return false;
-
- /* The qp is promisc qp so it is a duplicate on this index
- * Find the index entry, and remove the duplicate */
- list_for_each_entry(tmp_entry, &s_steer->steer_entries[steer], list) {
- if (tmp_entry->index == index) {
- entry = tmp_entry;
- break;
- }
- }
- if (unlikely(!entry)) {
- mlx4_warn(dev, "Steering entry for index %x is not registered\n", index);
- return false;
- }
- list_for_each_entry_safe(dqp, tmp_dqp, &entry->duplicates, list) {
- if (dqp->qpn == qpn) {
- list_del(&dqp->list);
- kfree(dqp);
- }
- }
- return true;
-}
-
-/* I a steering entry contains only promisc QPs, it can be removed. */
-static bool can_remove_steering_entry(struct mlx4_dev *dev, u8 vep_num, u8 port,
- enum mlx4_steer_type steer,
- unsigned int index, u32 tqpn)
-{
- struct mlx4_steer *s_steer;
- struct mlx4_cmd_mailbox *mailbox;
- struct mlx4_mgm *mgm;
- struct mlx4_steer_index *entry = NULL, *tmp_entry;
- u32 qpn;
- u32 members_count;
- bool ret = false;
- int i;
- u8 pf_num;
-
- pf_num = (dev->caps.num_ports == 1) ? vep_num : (vep_num << 1) | (port - 1);
- s_steer = &mlx4_priv(dev)->steer[pf_num];
-
- mailbox = mlx4_alloc_cmd_mailbox(dev);
- if (IS_ERR(mailbox))
- return false;
- mgm = mailbox->buf;
-
- if (mlx4_READ_ENTRY(dev, index, mailbox))
- goto out;
- members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
- for (i = 0; i < members_count; i++) {
- qpn = be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK;
- if (!get_promisc_qp(dev, pf_num, steer, qpn) && qpn != tqpn) {
- /* the qp is not promisc, the entry can't be removed */
- goto out;
- }
- }
- /* All the qps currently registered for this entry are promiscuous,
- * Checking for duplicates */
- ret = true;
- list_for_each_entry_safe(entry, tmp_entry, &s_steer->steer_entries[steer], list) {
- if (entry->index == index) {
- if (list_empty(&entry->duplicates)) {
- list_del(&entry->list);
- kfree(entry);
- } else {
- /* This entry contains duplicates so it shouldn't be removed */
- ret = false;
- goto out;
- }
- }
- }
-
-out:
- mlx4_free_cmd_mailbox(dev, mailbox);
- return ret;
-}
-
-static int add_promisc_qp(struct mlx4_dev *dev, u8 vep_num, u8 port,
- enum mlx4_steer_type steer, u32 qpn)
-{
- struct mlx4_steer *s_steer;
- struct mlx4_cmd_mailbox *mailbox;
- struct mlx4_mgm *mgm;
- struct mlx4_steer_index *entry;
- struct mlx4_promisc_qp *pqp;
- struct mlx4_promisc_qp *dqp;
- u32 members_count;
- u32 prot;
- int i;
- bool found;
- int last_index;
- int err;
- u8 pf_num;
- struct mlx4_priv *priv = mlx4_priv(dev);
- pf_num = (dev->caps.num_ports == 1) ? vep_num : (vep_num << 1) | (port - 1);
- s_steer = &mlx4_priv(dev)->steer[pf_num];
-
- mutex_lock(&priv->mcg_table.mutex);
-
- if (get_promisc_qp(dev, pf_num, steer, qpn)) {
- err = 0; /* Noting to do, already exists */
- goto out_mutex;
- }
-
- pqp = kmalloc(sizeof *pqp, GFP_KERNEL);
- if (!pqp) {
- err = -ENOMEM;
- goto out_mutex;
- }
- pqp->qpn = qpn;
-
- mailbox = mlx4_alloc_cmd_mailbox(dev);
- if (IS_ERR(mailbox)) {
- err = -ENOMEM;
- goto out_alloc;
- }
- mgm = mailbox->buf;
-
- /* the promisc qp needs to be added for each one of the steering
- * entries, if it already exists, needs to be added as a duplicate
- * for this entry */
- list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
- err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
- if (err)
- goto out_mailbox;
-
- members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
- prot = be32_to_cpu(mgm->members_count) >> 30;
- found = false;
- for (i = 0; i < members_count; i++) {
- if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn) {
- /* Entry already exists, add to duplicates */
- dqp = kmalloc(sizeof *dqp, GFP_KERNEL);
- if (!dqp)
- goto out_mailbox;
- dqp->qpn = qpn;
- list_add_tail(&dqp->list, &entry->duplicates);
- found = true;
- }
- }
- if (!found) {
- /* Need to add the qpn to mgm */
- if (members_count == MLX4_QP_PER_MGM) {
- /* entry is full */
- err = -ENOMEM;
- goto out_mailbox;
- }
- mgm->qp[members_count++] = cpu_to_be32(qpn & MGM_QPN_MASK);
- mgm->members_count = cpu_to_be32(members_count | (prot << 30));
- err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
- if (err)
- goto out_mailbox;
- }
- last_index = entry->index;
- }
-
- /* add the new qpn to list of promisc qps */
- list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
- /* now need to add all the promisc qps to default entry */
- memset(mgm, 0, sizeof *mgm);
- members_count = 0;
- list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
- mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
- mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
-
- err = mlx4_WRITE_PROMISC(dev, vep_num, port, steer, mailbox);
- if (err)
- goto out_list;
-
- mlx4_free_cmd_mailbox(dev, mailbox);
- mutex_unlock(&priv->mcg_table.mutex);
- return 0;
-
-out_list:
- list_del(&pqp->list);
-out_mailbox:
- mlx4_free_cmd_mailbox(dev, mailbox);
-out_alloc:
- kfree(pqp);
-out_mutex:
- mutex_unlock(&priv->mcg_table.mutex);
- return err;
-}
-
-static int remove_promisc_qp(struct mlx4_dev *dev, u8 vep_num, u8 port,
- enum mlx4_steer_type steer, u32 qpn)
-{
- struct mlx4_priv *priv = mlx4_priv(dev);
- struct mlx4_steer *s_steer;
- struct mlx4_cmd_mailbox *mailbox;
- struct mlx4_mgm *mgm;
- struct mlx4_steer_index *entry;
- struct mlx4_promisc_qp *pqp;
- struct mlx4_promisc_qp *dqp;
- u32 members_count;
- bool found;
- bool back_to_list = false;
- int loc, i;
- int err;
- u8 pf_num;
-
- pf_num = (dev->caps.num_ports == 1) ? vep_num : (vep_num << 1) | (port - 1);
- s_steer = &mlx4_priv(dev)->steer[pf_num];
- mutex_lock(&priv->mcg_table.mutex);
-
- pqp = get_promisc_qp(dev, pf_num, steer, qpn);
- if (unlikely(!pqp)) {
- mlx4_warn(dev, "QP %x is not promiscuous QP\n", qpn);
- /* nothing to do */
- err = 0;
- goto out_mutex;
- }
-
- /*remove from list of promisc qps */
- list_del(&pqp->list);
-
- /* set the default entry not to include the removed one */
- mailbox = mlx4_alloc_cmd_mailbox(dev);
- if (IS_ERR(mailbox)) {
- err = -ENOMEM;
- back_to_list = true;
- goto out_list;
- }
- mgm = mailbox->buf;
- members_count = 0;
- list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list)
- mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK);
- mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30);
-
- err = mlx4_WRITE_PROMISC(dev, vep_num, port, steer, mailbox);
- if (err)
- goto out_mailbox;
-
- /* remove the qp from all the steering entries*/
- list_for_each_entry(entry, &s_steer->steer_entries[steer], list) {
- found = false;
- list_for_each_entry(dqp, &entry->duplicates, list) {
- if (dqp->qpn == qpn) {
- found = true;
- break;
- }
- }
- if (found) {
- /* a duplicate, no need to change the mgm,
- * only update the duplicates list */
- list_del(&dqp->list);
- kfree(dqp);
- } else {
- err = mlx4_READ_ENTRY(dev, entry->index, mailbox);
- if (err)
- goto out_mailbox;
- members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
- for (loc = -1, i = 0; i < members_count; ++i)
- if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qpn)
- loc = i;
-
- mgm->members_count = cpu_to_be32(--members_count |
- (MLX4_PROT_ETH << 30));
- mgm->qp[loc] = mgm->qp[i - 1];
- mgm->qp[i - 1] = 0;
-
- err = mlx4_WRITE_ENTRY(dev, entry->index, mailbox);
- if (err)
- goto out_mailbox;
- }
-
- }
-
-out_mailbox:
- mlx4_free_cmd_mailbox(dev, mailbox);
-out_list:
- if (back_to_list)
- list_add_tail(&pqp->list, &s_steer->promisc_qps[steer]);
- else
- kfree(pqp);
-out_mutex:
- mutex_unlock(&priv->mcg_table.mutex);
- return err;
-}
-
-/*
- * Caller must hold MCG table semaphore. gid and mgm parameters must
- * be properly aligned for command interface.
- *
- * Returns 0 unless a firmware command error occurs.
- *
- * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
- * and *mgm holds MGM entry.
- *
- * if GID is found in AMGM, *index = index in AMGM, *prev = index of
- * previous entry in hash chain and *mgm holds AMGM entry.
- *
- * If no AMGM exists for given gid, *index = -1, *prev = index of last
- * entry in hash chain and *mgm holds end of hash chain.
- */
-static int find_entry(struct mlx4_dev *dev, u8 port,
- u8 *gid, enum mlx4_protocol prot,
- enum mlx4_steer_type steer,
- struct mlx4_cmd_mailbox *mgm_mailbox,
- u16 *hash, int *prev, int *index)
-{
- struct mlx4_cmd_mailbox *mailbox;
- struct mlx4_mgm *mgm = mgm_mailbox->buf;
- u8 *mgid;
- int err;
- u8 op_mod = (prot == MLX4_PROT_ETH) ?
- !!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) : 0;
-
- mailbox = mlx4_alloc_cmd_mailbox(dev);
- if (IS_ERR(mailbox))
- return -ENOMEM;
- mgid = mailbox->buf;
-
- memcpy(mgid, gid, 16);
-
- err = mlx4_GID_HASH(dev, mailbox, hash, op_mod);
- mlx4_free_cmd_mailbox(dev, mailbox);
- if (err)
- return err;
-
- if (0)
- mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, *hash);
-
- *index = *hash;
- *prev = -1;
-
- do {
- err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox);
- if (err)
- return err;
-
- if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
- if (*index != *hash) {
- mlx4_err(dev, "Found zero MGID in AMGM.\n");
- err = -EINVAL;
- }
- return err;
- }
-
- if (!memcmp(mgm->gid, gid, 16) &&
- be32_to_cpu(mgm->members_count) >> 30 == prot)
- return err;
-
- *prev = *index;
- *index = be32_to_cpu(mgm->next_gid_index) >> 6;
- } while (*index);
-
- *index = -1;
- return err;
-}
-
-int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
- int block_mcast_loopback, enum mlx4_protocol prot,
- enum mlx4_steer_type steer)
-{
- struct mlx4_priv *priv = mlx4_priv(dev);
- struct mlx4_cmd_mailbox *mailbox;
- struct mlx4_mgm *mgm;
- u32 members_count;
- u16 hash;
- int index, prev;
- int link = 0;
- int i;
- int err;
- u8 port = gid[5];
- u8 new_entry = 0;
-
- mailbox = mlx4_alloc_cmd_mailbox(dev);
- if (IS_ERR(mailbox))
- return PTR_ERR(mailbox);
- mgm = mailbox->buf;
-
- mutex_lock(&priv->mcg_table.mutex);
- err = find_entry(dev, port, gid, prot, steer,
- mailbox, &hash, &prev, &index);
- if (err)
- goto out;
-
- if (index != -1) {
- if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) {
- new_entry = 1;
- memcpy(mgm->gid, gid, 16);
- }
- } else {
- link = 1;
-
- index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
- if (index == -1) {
- mlx4_err(dev, "No AMGM entries left\n");
- err = -ENOMEM;
- goto out;
- }
- index += dev->caps.num_mgms;
-
- memset(mgm, 0, sizeof *mgm);
- memcpy(mgm->gid, gid, 16);
- }
-
- members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
- if (members_count == MLX4_QP_PER_MGM) {
- mlx4_err(dev, "MGM at index %x is full.\n", index);
- err = -ENOMEM;
- goto out;
- }
-
- for (i = 0; i < members_count; ++i)
- if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) {
- mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
- err = 0;
- goto out;
- }
-
- if (block_mcast_loopback)
- mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) |
- (1U << MGM_BLCK_LB_BIT));
- else
- mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK);
-
- mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30);
-
- err = mlx4_WRITE_ENTRY(dev, index, mailbox);
- if (err)
- goto out;
-
- if (!link)
- goto out;
-
- err = mlx4_READ_ENTRY(dev, prev, mailbox);
- if (err)
- goto out;
-
- mgm->next_gid_index = cpu_to_be32(index << 6);
-
- err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
- if (err)
- goto out;
-
-out:
- if (prot == MLX4_PROT_ETH) {
- /* manage the steering entry for promisc mode */
- if (new_entry)
- new_steering_entry(dev, 0, port, steer, index, qp->qpn);
- else
- existing_steering_entry(dev, 0, port, steer,
- index, qp->qpn);
- }
- if (err && link && index != -1) {
- if (index < dev->caps.num_mgms)
- mlx4_warn(dev, "Got AMGM index %d < %d",
- index, dev->caps.num_mgms);
- else
- mlx4_bitmap_free(&priv->mcg_table.bitmap,
- index - dev->caps.num_mgms);
- }
- mutex_unlock(&priv->mcg_table.mutex);
-
- mlx4_free_cmd_mailbox(dev, mailbox);
- return err;
-}
-
-int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
- enum mlx4_protocol prot, enum mlx4_steer_type steer)
-{
- struct mlx4_priv *priv = mlx4_priv(dev);
- struct mlx4_cmd_mailbox *mailbox;
- struct mlx4_mgm *mgm;
- u32 members_count;
- u16 hash;
- int prev, index;
- int i, loc;
- int err;
- u8 port = gid[5];
- bool removed_entry = false;
-
- mailbox = mlx4_alloc_cmd_mailbox(dev);
- if (IS_ERR(mailbox))
- return PTR_ERR(mailbox);
- mgm = mailbox->buf;
-
- mutex_lock(&priv->mcg_table.mutex);
-
- err = find_entry(dev, port, gid, prot, steer,
- mailbox, &hash, &prev, &index);
- if (err)
- goto out;
-
- if (index == -1) {
- mlx4_err(dev, "MGID %pI6 not found\n", gid);
- err = -EINVAL;
- goto out;
- }
-
- /* if this pq is also a promisc qp, it shouldn't be removed */
- if (prot == MLX4_PROT_ETH &&
- check_duplicate_entry(dev, 0, port, steer, index, qp->qpn))
- goto out;
-
- members_count = be32_to_cpu(mgm->members_count) & 0xffffff;
- for (loc = -1, i = 0; i < members_count; ++i)
- if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn)
- loc = i;
-
- if (loc == -1) {
- mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
- err = -EINVAL;
- goto out;
- }
-
-
- mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30);
- mgm->qp[loc] = mgm->qp[i - 1];
- mgm->qp[i - 1] = 0;
-
- if (prot == MLX4_PROT_ETH)
- removed_entry = can_remove_steering_entry(dev, 0, port, steer, index, qp->qpn);
- if (i != 1 && (prot != MLX4_PROT_ETH || !removed_entry)) {
- err = mlx4_WRITE_ENTRY(dev, index, mailbox);
- goto out;
- }
-
- /* We are going to delete the entry, members count should be 0 */
- mgm->members_count = cpu_to_be32((u32) prot << 30);
-
- if (prev == -1) {
- /* Remove entry from MGM */
- int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
- if (amgm_index) {
- err = mlx4_READ_ENTRY(dev, amgm_index, mailbox);
- if (err)
- goto out;
- } else
- memset(mgm->gid, 0, 16);
-
- err = mlx4_WRITE_ENTRY(dev, index, mailbox);
- if (err)
- goto out;
-
- if (amgm_index) {
- if (amgm_index < dev->caps.num_mgms)
- mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d",
- index, amgm_index, dev->caps.num_mgms);
- else
- mlx4_bitmap_free(&priv->mcg_table.bitmap,
- amgm_index - dev->caps.num_mgms);
- }
- } else {
- /* Remove entry from AMGM */
- int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
- err = mlx4_READ_ENTRY(dev, prev, mailbox);
- if (err)
- goto out;
-
- mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
-
- err = mlx4_WRITE_ENTRY(dev, prev, mailbox);
- if (err)
- goto out;
-
- if (index < dev->caps.num_mgms)
- mlx4_warn(dev, "entry %d had next AMGM index %d < %d",
- prev, index, dev->caps.num_mgms);
- else
- mlx4_bitmap_free(&priv->mcg_table.bitmap,
- index - dev->caps.num_mgms);
- }
-
-out:
- mutex_unlock(&priv->mcg_table.mutex);
-
- mlx4_free_cmd_mailbox(dev, mailbox);
- return err;
-}
-
-
-int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
- int block_mcast_loopback, enum mlx4_protocol prot)
-{
- enum mlx4_steer_type steer;
-
- steer = (is_valid_ether_addr(&gid[10])) ? MLX4_UC_STEER : MLX4_MC_STEER;
-
- if (prot == MLX4_PROT_ETH &&
- !(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
- return 0;
-
- if (prot == MLX4_PROT_ETH)
- gid[7] |= (steer << 1);
-
- return mlx4_qp_attach_common(dev, qp, gid,
- block_mcast_loopback, prot,
- steer);
-}
-EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
-
-int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
- enum mlx4_protocol prot)
-{
- enum mlx4_steer_type steer;
-
- steer = (is_valid_ether_addr(&gid[10])) ? MLX4_UC_STEER : MLX4_MC_STEER;
-
- if (prot == MLX4_PROT_ETH &&
- !(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
- return 0;
-
- if (prot == MLX4_PROT_ETH) {
- gid[7] |= (steer << 1);
- }
-
- return mlx4_qp_detach_common(dev, qp, gid, prot, steer);
-}
-EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
-
-
-int mlx4_multicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
-{
- if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
- return 0;
-
-
- return add_promisc_qp(dev, 0, port, MLX4_MC_STEER, qpn);
-}
-EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_add);
-
-int mlx4_multicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
-{
- if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
- return 0;
-
-
- return remove_promisc_qp(dev, 0, port, MLX4_MC_STEER, qpn);
-}
-EXPORT_SYMBOL_GPL(mlx4_multicast_promisc_remove);
-
-int mlx4_unicast_promisc_add(struct mlx4_dev *dev, u32 qpn, u8 port)
-{
- if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
- return 0;
-
-
- return add_promisc_qp(dev, 0, port, MLX4_UC_STEER, qpn);
-}
-EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_add);
-
-int mlx4_unicast_promisc_remove(struct mlx4_dev *dev, u32 qpn, u8 port)
-{
- if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER))
- return 0;
-
- return remove_promisc_qp(dev, 0, port, MLX4_UC_STEER, qpn);
-}
-EXPORT_SYMBOL_GPL(mlx4_unicast_promisc_remove);
-
-int mlx4_init_mcg_table(struct mlx4_dev *dev)
-{
- struct mlx4_priv *priv = mlx4_priv(dev);
- int err;
-
- err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
- dev->caps.num_amgms - 1, 0, 0);
- if (err)
- return err;
-
- mutex_init(&priv->mcg_table.mutex);
-
- return 0;
-}
-
-void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
-{
- mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
-}
git.openpandora.org / pandora-kernel.git / blobdiff