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33#include <linux/kernel.h>
34#include <linux/sysctl.h>
35#include <linux/proc_fs.h>
36
37#include "iw.h"
38
39static struct ctl_table_header *rds_iw_sysctl_hdr;
40
41unsigned long rds_iw_sysctl_max_send_wr = RDS_IW_DEFAULT_SEND_WR;
42unsigned long rds_iw_sysctl_max_recv_wr = RDS_IW_DEFAULT_RECV_WR;
43unsigned long rds_iw_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE;
44static unsigned long rds_iw_sysctl_max_wr_min = 1;
45
46static unsigned long rds_iw_sysctl_max_wr_max = (u32)~0;
47
48unsigned long rds_iw_sysctl_max_unsig_wrs = 16;
49static unsigned long rds_iw_sysctl_max_unsig_wr_min = 1;
50static unsigned long rds_iw_sysctl_max_unsig_wr_max = 64;
51
52unsigned long rds_iw_sysctl_max_unsig_bytes = (16 << 20);
53static unsigned long rds_iw_sysctl_max_unsig_bytes_min = 1;
54static unsigned long rds_iw_sysctl_max_unsig_bytes_max = ~0UL;
55
56unsigned int rds_iw_sysctl_flow_control = 1;
57
58ctl_table rds_iw_sysctl_table[] = {
59 {
60 .ctl_name = CTL_UNNUMBERED,
61 .procname = "max_send_wr",
62 .data = &rds_iw_sysctl_max_send_wr,
63 .maxlen = sizeof(unsigned long),
64 .mode = 0644,
65 .proc_handler = &proc_doulongvec_minmax,
66 .extra1 = &rds_iw_sysctl_max_wr_min,
67 .extra2 = &rds_iw_sysctl_max_wr_max,
68 },
69 {
70 .ctl_name = CTL_UNNUMBERED,
71 .procname = "max_recv_wr",
72 .data = &rds_iw_sysctl_max_recv_wr,
73 .maxlen = sizeof(unsigned long),
74 .mode = 0644,
75 .proc_handler = &proc_doulongvec_minmax,
76 .extra1 = &rds_iw_sysctl_max_wr_min,
77 .extra2 = &rds_iw_sysctl_max_wr_max,
78 },
79 {
80 .ctl_name = CTL_UNNUMBERED,
81 .procname = "max_unsignaled_wr",
82 .data = &rds_iw_sysctl_max_unsig_wrs,
83 .maxlen = sizeof(unsigned long),
84 .mode = 0644,
85 .proc_handler = &proc_doulongvec_minmax,
86 .extra1 = &rds_iw_sysctl_max_unsig_wr_min,
87 .extra2 = &rds_iw_sysctl_max_unsig_wr_max,
88 },
89 {
90 .ctl_name = CTL_UNNUMBERED,
91 .procname = "max_unsignaled_bytes",
92 .data = &rds_iw_sysctl_max_unsig_bytes,
93 .maxlen = sizeof(unsigned long),
94 .mode = 0644,
95 .proc_handler = &proc_doulongvec_minmax,
96 .extra1 = &rds_iw_sysctl_max_unsig_bytes_min,
97 .extra2 = &rds_iw_sysctl_max_unsig_bytes_max,
98 },
99 {
100 .ctl_name = CTL_UNNUMBERED,
101 .procname = "max_recv_allocation",
102 .data = &rds_iw_sysctl_max_recv_allocation,
103 .maxlen = sizeof(unsigned long),
104 .mode = 0644,
105 .proc_handler = &proc_doulongvec_minmax,
106 },
107 {
108 .ctl_name = CTL_UNNUMBERED,
109 .procname = "flow_control",
110 .data = &rds_iw_sysctl_flow_control,
111 .maxlen = sizeof(rds_iw_sysctl_flow_control),
112 .mode = 0644,
113 .proc_handler = &proc_dointvec,
114 },
115 { .ctl_name = 0}
116};
117
118static struct ctl_path rds_iw_sysctl_path[] = {
119 { .procname = "net", .ctl_name = CTL_NET, },
120 { .procname = "rds", .ctl_name = CTL_UNNUMBERED, },
121 { .procname = "iw", .ctl_name = CTL_UNNUMBERED, },
122 { }
123};
124
125void rds_iw_sysctl_exit(void)
126{
127 if (rds_iw_sysctl_hdr)
128 unregister_sysctl_table(rds_iw_sysctl_hdr);
129}
130
131int __init rds_iw_sysctl_init(void)
132{
133 rds_iw_sysctl_hdr = register_sysctl_paths(rds_iw_sysctl_path, rds_iw_sysctl_table);
134 if (rds_iw_sysctl_hdr == NULL)
135 return -ENOMEM;
136 return 0;
137}
138