/* * Copyright (c) 2006 Oracle. 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/kernel.h> #include <linux/sysctl.h> #include <linux/proc_fs.h> #include "iw.h" static struct ctl_table_header *rds_iw_sysctl_hdr; unsigned long rds_iw_sysctl_max_send_wr = RDS_IW_DEFAULT_SEND_WR; unsigned long rds_iw_sysctl_max_recv_wr = RDS_IW_DEFAULT_RECV_WR; unsigned long rds_iw_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE; static unsigned long rds_iw_sysctl_max_wr_min = 1; /* hardware will fail CQ creation long before this */ static unsigned long rds_iw_sysctl_max_wr_max = (u32)~0; unsigned long rds_iw_sysctl_max_unsig_wrs = 16; static unsigned long rds_iw_sysctl_max_unsig_wr_min = 1; static unsigned long rds_iw_sysctl_max_unsig_wr_max = 64; unsigned long rds_iw_sysctl_max_unsig_bytes = (16 << 20); static unsigned long rds_iw_sysctl_max_unsig_bytes_min = 1; static unsigned long rds_iw_sysctl_max_unsig_bytes_max = ~0UL; unsigned int rds_iw_sysctl_flow_control = 1; ctl_table rds_iw_sysctl_table[] = { { .ctl_name = CTL_UNNUMBERED, .procname = "max_send_wr", .data = &rds_iw_sysctl_max_send_wr, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &proc_doulongvec_minmax, .extra1 = &rds_iw_sysctl_max_wr_min, .extra2 = &rds_iw_sysctl_max_wr_max, }, { .ctl_name = CTL_UNNUMBERED, .procname = "max_recv_wr", .data = &rds_iw_sysctl_max_recv_wr, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &proc_doulongvec_minmax, .extra1 = &rds_iw_sysctl_max_wr_min, .extra2 = &rds_iw_sysctl_max_wr_max, }, { .ctl_name = CTL_UNNUMBERED, .procname = "max_unsignaled_wr", .data = &rds_iw_sysctl_max_unsig_wrs, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &proc_doulongvec_minmax, .extra1 = &rds_iw_sysctl_max_unsig_wr_min, .extra2 = &rds_iw_sysctl_max_unsig_wr_max, }, { .ctl_name = CTL_UNNUMBERED, .procname = "max_unsignaled_bytes", .data = &rds_iw_sysctl_max_unsig_bytes, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &proc_doulongvec_minmax, .extra1 = &rds_iw_sysctl_max_unsig_bytes_min, .extra2 = &rds_iw_sysctl_max_unsig_bytes_max, }, { .ctl_name = CTL_UNNUMBERED, .procname = "max_recv_allocation", .data = &rds_iw_sysctl_max_recv_allocation, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &proc_doulongvec_minmax, }, { .ctl_name = CTL_UNNUMBERED, .procname = "flow_control", .data = &rds_iw_sysctl_flow_control, .maxlen = sizeof(rds_iw_sysctl_flow_control), .mode = 0644, .proc_handler = &proc_dointvec, }, { .ctl_name = 0} }; static struct ctl_path rds_iw_sysctl_path[] = { { .procname = "net", .ctl_name = CTL_NET, }, { .procname = "rds", .ctl_name = CTL_UNNUMBERED, }, { .procname = "iw", .ctl_name = CTL_UNNUMBERED, }, { } }; void rds_iw_sysctl_exit(void) { if (rds_iw_sysctl_hdr) unregister_sysctl_table(rds_iw_sysctl_hdr); } int __init rds_iw_sysctl_init(void) { rds_iw_sysctl_hdr = register_sysctl_paths(rds_iw_sysctl_path, rds_iw_sysctl_table); if (rds_iw_sysctl_hdr == NULL) return -ENOMEM; return 0; }