mlx5_gid.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 2017, Mellanox Technologies. All rights reserved.
    3  *
    4  * This software is available to you under a choice of one of two
    5  * licenses.  You may choose to be licensed under the terms of the GNU
    6  * General Public License (GPL) Version 2, available from the file
    7  * COPYING in the main directory of this source tree, or the
    8  * OpenIB.org BSD license below:
    9  *
   10  *     Redistribution and use in source and binary forms, with or
   11  *     without modification, are permitted provided that the following
   12  *     conditions are met:
   13  *
   14  *      - Redistributions of source code must retain the above
   15  *        copyright notice, this list of conditions and the following
   16  *        disclaimer.
   17  *
   18  *      - Redistributions in binary form must reproduce the above
   19  *        copyright notice, this list of conditions and the following
   20  *        disclaimer in the documentation and/or other materials
   21  *        provided with the distribution.
   22  *
   23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   30  * SOFTWARE.
   31  *
   32  * $FreeBSD$
   33  */
   34 
   35 #include <linux/etherdevice.h>
   36 #include <dev/mlx5/driver.h>
   37 #include <dev/mlx5/mlx5_core/mlx5_core.h>
   38 #include <dev/mlx5/mlx5_lib/mlx5.h>
   39 
   40 void mlx5_init_reserved_gids(struct mlx5_core_dev *dev)
   41 {
   42         unsigned int tblsz = MLX5_CAP_ROCE(dev, roce_address_table_size);
   43 
   44         ida_init(&dev->roce.reserved_gids.ida);
   45         dev->roce.reserved_gids.start = tblsz;
   46         dev->roce.reserved_gids.count = 0;
   47 }
   48 
   49 void mlx5_cleanup_reserved_gids(struct mlx5_core_dev *dev)
   50 {
   51         WARN_ON(!ida_is_empty(&dev->roce.reserved_gids.ida));
   52         dev->roce.reserved_gids.start = 0;
   53         dev->roce.reserved_gids.count = 0;
   54         ida_destroy(&dev->roce.reserved_gids.ida);
   55 }
   56 
   57 int mlx5_core_reserve_gids(struct mlx5_core_dev *dev, unsigned int count)
   58 {
   59         if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) {
   60                 mlx5_core_err(dev, "Cannot reserve GIDs when interfaces are up\n");
   61                 return -EPERM;
   62         }
   63         if (dev->roce.reserved_gids.start < count) {
   64                 mlx5_core_warn(dev, "GID table exhausted attempting to reserve %d more GIDs\n",
   65                                count);
   66                 return -ENOMEM;
   67         }
   68         if (dev->roce.reserved_gids.count + count > MLX5_MAX_RESERVED_GIDS) {
   69                 mlx5_core_warn(dev, "Unable to reserve %d more GIDs\n", count);
   70                 return -ENOMEM;
   71         }
   72 
   73         dev->roce.reserved_gids.start -= count;
   74         dev->roce.reserved_gids.count += count;
   75         mlx5_core_dbg(dev, "Reserved %u GIDs starting at %u\n",
   76                       dev->roce.reserved_gids.count,
   77                       dev->roce.reserved_gids.start);
   78         return 0;
   79 }
   80 
   81 void mlx5_core_unreserve_gids(struct mlx5_core_dev *dev, unsigned int count)
   82 {
   83         WARN(test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state), "Unreserving GIDs when interfaces are up");
   84         WARN(count > dev->roce.reserved_gids.count, "Unreserving %u GIDs when only %u reserved",
   85              count, dev->roce.reserved_gids.count);
   86 
   87         dev->roce.reserved_gids.start += count;
   88         dev->roce.reserved_gids.count -= count;
   89         mlx5_core_dbg(dev, "%u GIDs starting at %u left reserved\n",
   90                       dev->roce.reserved_gids.count,
   91                       dev->roce.reserved_gids.start);
   92 }
   93 
   94 int mlx5_core_reserved_gid_alloc(struct mlx5_core_dev *dev, int *gid_index)
   95 {
   96         int end = dev->roce.reserved_gids.start +
   97                   dev->roce.reserved_gids.count;
   98         int index = 0;
   99 
  100         index = ida_simple_get(&dev->roce.reserved_gids.ida,
  101                                dev->roce.reserved_gids.start, end,
  102                                GFP_KERNEL);
  103         if (index < 0)
  104                 return index;
  105 
  106         mlx5_core_dbg(dev, "Allocating reserved GID %u\n", index);
  107         *gid_index = index;
  108         return 0;
  109 }
  110 
  111 void mlx5_core_reserved_gid_free(struct mlx5_core_dev *dev, int gid_index)
  112 {
  113         mlx5_core_dbg(dev, "Freeing reserved GID %u\n", gid_index);
  114         ida_simple_remove(&dev->roce.reserved_gids.ida, gid_index);
  115 }
  116 
  117 unsigned int mlx5_core_reserved_gids_count(struct mlx5_core_dev *dev)
  118 {
  119         return dev->roce.reserved_gids.count;
  120 }
  121 EXPORT_SYMBOL_GPL(mlx5_core_reserved_gids_count);
  122 
  123 int mlx5_core_roce_gid_set(struct mlx5_core_dev *dev, unsigned int index,
  124                            u8 roce_version, u8 roce_l3_type, const u8 *gid,
  125                            const u8 *mac, bool vlan, u16 vlan_id)
  126 {
  127 #define MLX5_SET_RA(p, f, v) MLX5_SET(roce_addr_layout, p, f, v)
  128         u32  in[MLX5_ST_SZ_DW(set_roce_address_in)] = {0};
  129         u32 out[MLX5_ST_SZ_DW(set_roce_address_out)] = {0};
  130         void *in_addr = MLX5_ADDR_OF(set_roce_address_in, in, roce_address);
  131         char *addr_l3_addr = MLX5_ADDR_OF(roce_addr_layout, in_addr,
  132                                           source_l3_address);
  133         void *addr_mac = MLX5_ADDR_OF(roce_addr_layout, in_addr,
  134                                       source_mac_47_32);
  135         int gidsz = MLX5_FLD_SZ_BYTES(roce_addr_layout, source_l3_address);
  136 
  137         if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
  138                 return -EINVAL;
  139 
  140         if (gid) {
  141                 if (vlan) {
  142                         MLX5_SET_RA(in_addr, vlan_valid, 1);
  143                         MLX5_SET_RA(in_addr, vlan_id, vlan_id);
  144                 }
  145 
  146                 ether_addr_copy(addr_mac, mac);
  147                 MLX5_SET_RA(in_addr, roce_version, roce_version);
  148                 MLX5_SET_RA(in_addr, roce_l3_type, roce_l3_type);
  149                 memcpy(addr_l3_addr, gid, gidsz);
  150         }
  151 
  152         MLX5_SET(set_roce_address_in, in, roce_address_index, index);
  153         MLX5_SET(set_roce_address_in, in, opcode, MLX5_CMD_OP_SET_ROCE_ADDRESS);
  154         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
  155 }
  156 EXPORT_SYMBOL(mlx5_core_roce_gid_set);

Cache object: 66242e6354883abde86c097f11c24da3

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/dev/mlx5/mlx5_lib/mlx5_gid.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mlx5/mlx5_lib/mlx5_gid.c