ctrl.c (6da14d74e2bd07bca2cba10878dda5dc0485d59c) ctrl.c (ff5a0b421cb23bf6b2898939ffef5b683045d9d3)
1// SPDX-License-Identifier: GPL-2.0
2/* Multipath TCP
3 *
4 * Copyright (c) 2019, Tessares SA.
5 */
6
7#ifdef CONFIG_SYSCTL
8#include <linux/sysctl.h>

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17
18static int mptcp_pernet_id;
19struct mptcp_pernet {
20#ifdef CONFIG_SYSCTL
21 struct ctl_table_header *ctl_table_hdr;
22#endif
23
24 unsigned int add_addr_timeout;
1// SPDX-License-Identifier: GPL-2.0
2/* Multipath TCP
3 *
4 * Copyright (c) 2019, Tessares SA.
5 */
6
7#ifdef CONFIG_SYSCTL
8#include <linux/sysctl.h>

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17
18static int mptcp_pernet_id;
19struct mptcp_pernet {
20#ifdef CONFIG_SYSCTL
21 struct ctl_table_header *ctl_table_hdr;
22#endif
23
24 unsigned int add_addr_timeout;
25 unsigned int stale_loss_cnt;
25 u8 mptcp_enabled;
26 u8 checksum_enabled;
27 u8 allow_join_initial_addr_port;
28};
29
30static struct mptcp_pernet *mptcp_get_pernet(const struct net *net)
31{
32 return net_generic(net, mptcp_pernet_id);

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47 return mptcp_get_pernet(net)->checksum_enabled;
48}
49
50int mptcp_allow_join_id0(const struct net *net)
51{
52 return mptcp_get_pernet(net)->allow_join_initial_addr_port;
53}
54
26 u8 mptcp_enabled;
27 u8 checksum_enabled;
28 u8 allow_join_initial_addr_port;
29};
30
31static struct mptcp_pernet *mptcp_get_pernet(const struct net *net)
32{
33 return net_generic(net, mptcp_pernet_id);

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48 return mptcp_get_pernet(net)->checksum_enabled;
49}
50
51int mptcp_allow_join_id0(const struct net *net)
52{
53 return mptcp_get_pernet(net)->allow_join_initial_addr_port;
54}
55
56unsigned int mptcp_stale_loss_cnt(const struct net *net)
57{
58 return mptcp_get_pernet(net)->stale_loss_cnt;
59}
60
55static void mptcp_pernet_set_defaults(struct mptcp_pernet *pernet)
56{
57 pernet->mptcp_enabled = 1;
58 pernet->add_addr_timeout = TCP_RTO_MAX;
59 pernet->checksum_enabled = 0;
60 pernet->allow_join_initial_addr_port = 1;
61static void mptcp_pernet_set_defaults(struct mptcp_pernet *pernet)
62{
63 pernet->mptcp_enabled = 1;
64 pernet->add_addr_timeout = TCP_RTO_MAX;
65 pernet->checksum_enabled = 0;
66 pernet->allow_join_initial_addr_port = 1;
67 pernet->stale_loss_cnt = 4;
61}
62
63#ifdef CONFIG_SYSCTL
64static struct ctl_table mptcp_sysctl_table[] = {
65 {
66 .procname = "enabled",
67 .maxlen = sizeof(u8),
68 .mode = 0644,

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90 {
91 .procname = "allow_join_initial_addr_port",
92 .maxlen = sizeof(u8),
93 .mode = 0644,
94 .proc_handler = proc_dou8vec_minmax,
95 .extra1 = SYSCTL_ZERO,
96 .extra2 = SYSCTL_ONE
97 },
68}
69
70#ifdef CONFIG_SYSCTL
71static struct ctl_table mptcp_sysctl_table[] = {
72 {
73 .procname = "enabled",
74 .maxlen = sizeof(u8),
75 .mode = 0644,

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97 {
98 .procname = "allow_join_initial_addr_port",
99 .maxlen = sizeof(u8),
100 .mode = 0644,
101 .proc_handler = proc_dou8vec_minmax,
102 .extra1 = SYSCTL_ZERO,
103 .extra2 = SYSCTL_ONE
104 },
105 {
106 .procname = "stale_loss_cnt",
107 .maxlen = sizeof(unsigned int),
108 .mode = 0644,
109 .proc_handler = proc_douintvec_minmax,
110 },
98 {}
99};
100
101static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet)
102{
103 struct ctl_table_header *hdr;
104 struct ctl_table *table;
105
106 table = mptcp_sysctl_table;
107 if (!net_eq(net, &init_net)) {
108 table = kmemdup(table, sizeof(mptcp_sysctl_table), GFP_KERNEL);
109 if (!table)
110 goto err_alloc;
111 }
112
113 table[0].data = &pernet->mptcp_enabled;
114 table[1].data = &pernet->add_addr_timeout;
115 table[2].data = &pernet->checksum_enabled;
116 table[3].data = &pernet->allow_join_initial_addr_port;
111 {}
112};
113
114static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet)
115{
116 struct ctl_table_header *hdr;
117 struct ctl_table *table;
118
119 table = mptcp_sysctl_table;
120 if (!net_eq(net, &init_net)) {
121 table = kmemdup(table, sizeof(mptcp_sysctl_table), GFP_KERNEL);
122 if (!table)
123 goto err_alloc;
124 }
125
126 table[0].data = &pernet->mptcp_enabled;
127 table[1].data = &pernet->add_addr_timeout;
128 table[2].data = &pernet->checksum_enabled;
129 table[3].data = &pernet->allow_join_initial_addr_port;
130 table[4].data = &pernet->stale_loss_cnt;
117
118 hdr = register_net_sysctl(net, MPTCP_SYSCTL_PATH, table);
119 if (!hdr)
120 goto err_reg;
121
122 pernet->ctl_table_hdr = hdr;
123
124 return 0;

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132 hdr = register_net_sysctl(net, MPTCP_SYSCTL_PATH, table);
133 if (!hdr)
134 goto err_reg;
135
136 pernet->ctl_table_hdr = hdr;
137
138 return 0;

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