diff options
Diffstat (limited to 'net/rds/ib_sysctl.c')
| -rw-r--r-- | net/rds/ib_sysctl.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/net/rds/ib_sysctl.c b/net/rds/ib_sysctl.c new file mode 100644 index 00000000000..d87830db93a --- /dev/null +++ b/net/rds/ib_sysctl.c @@ -0,0 +1,137 @@ +/* + * 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 "ib.h" + +static struct ctl_table_header *rds_ib_sysctl_hdr; + +unsigned long rds_ib_sysctl_max_send_wr = RDS_IB_DEFAULT_SEND_WR; +unsigned long rds_ib_sysctl_max_recv_wr = RDS_IB_DEFAULT_RECV_WR; +unsigned long rds_ib_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE; +static unsigned long rds_ib_sysctl_max_wr_min = 1; +/* hardware will fail CQ creation long before this */ +static unsigned long rds_ib_sysctl_max_wr_max = (u32)~0; + +unsigned long rds_ib_sysctl_max_unsig_wrs = 16; +static unsigned long rds_ib_sysctl_max_unsig_wr_min = 1; +static unsigned long rds_ib_sysctl_max_unsig_wr_max = 64; + +unsigned long rds_ib_sysctl_max_unsig_bytes = (16 << 20); +static unsigned long rds_ib_sysctl_max_unsig_bytes_min = 1; +static unsigned long rds_ib_sysctl_max_unsig_bytes_max = ~0UL; + +unsigned int rds_ib_sysctl_flow_control = 1; + +ctl_table rds_ib_sysctl_table[] = { + { + .ctl_name = CTL_UNNUMBERED, + .procname = "max_send_wr", + .data = &rds_ib_sysctl_max_send_wr, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = &proc_doulongvec_minmax, + .extra1 = &rds_ib_sysctl_max_wr_min, + .extra2 = &rds_ib_sysctl_max_wr_max, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "max_recv_wr", + .data = &rds_ib_sysctl_max_recv_wr, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = &proc_doulongvec_minmax, + .extra1 = &rds_ib_sysctl_max_wr_min, + .extra2 = &rds_ib_sysctl_max_wr_max, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "max_unsignaled_wr", + .data = &rds_ib_sysctl_max_unsig_wrs, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = &proc_doulongvec_minmax, + .extra1 = &rds_ib_sysctl_max_unsig_wr_min, + .extra2 = &rds_ib_sysctl_max_unsig_wr_max, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "max_unsignaled_bytes", + .data = &rds_ib_sysctl_max_unsig_bytes, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = &proc_doulongvec_minmax, + .extra1 = &rds_ib_sysctl_max_unsig_bytes_min, + .extra2 = &rds_ib_sysctl_max_unsig_bytes_max, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "max_recv_allocation", + .data = &rds_ib_sysctl_max_recv_allocation, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = &proc_doulongvec_minmax, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "flow_control", + .data = &rds_ib_sysctl_flow_control, + .maxlen = sizeof(rds_ib_sysctl_flow_control), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { .ctl_name = 0} +}; + +static struct ctl_path rds_ib_sysctl_path[] = { + { .procname = "net", .ctl_name = CTL_NET, }, + { .procname = "rds", .ctl_name = CTL_UNNUMBERED, }, + { .procname = "ib", .ctl_name = CTL_UNNUMBERED, }, + { } +}; + +void rds_ib_sysctl_exit(void) +{ + if (rds_ib_sysctl_hdr) + unregister_sysctl_table(rds_ib_sysctl_hdr); +} + +int __init rds_ib_sysctl_init(void) +{ + rds_ib_sysctl_hdr = register_sysctl_paths(rds_ib_sysctl_path, rds_ib_sysctl_table); + if (rds_ib_sysctl_hdr == NULL) + return -ENOMEM; + return 0; +} |