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-rw-r--r--include/linux/sysctl.h16
-rw-r--r--net/dccp/Makefile2
-rw-r--r--net/dccp/dccp.h14
-rw-r--r--net/dccp/options.c22
-rw-r--r--net/dccp/proto.c9
-rw-r--r--net/dccp/sysctl.c124
6 files changed, 176 insertions, 11 deletions
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index b686548f32e..dfcf449afc7 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -211,6 +211,7 @@ enum
NET_SCTP=17,
NET_LLC=18,
NET_NETFILTER=19,
+ NET_DCCP=20,
};
/* /proc/sys/kernel/random */
@@ -571,6 +572,21 @@ enum {
__NET_NEIGH_MAX
};
+/* /proc/sys/net/dccp */
+enum {
+ NET_DCCP_DEFAULT=1,
+};
+
+/* /proc/sys/net/dccp/default */
+enum {
+ NET_DCCP_DEFAULT_SEQ_WINDOW = 1,
+ NET_DCCP_DEFAULT_RX_CCID = 2,
+ NET_DCCP_DEFAULT_TX_CCID = 3,
+ NET_DCCP_DEFAULT_ACK_RATIO = 4,
+ NET_DCCP_DEFAULT_SEND_ACKVEC = 5,
+ NET_DCCP_DEFAULT_SEND_NDP = 6,
+};
+
/* /proc/sys/net/ipx */
enum {
NET_IPX_PPROP_BROADCASTING=1,
diff --git a/net/dccp/Makefile b/net/dccp/Makefile
index 5736acea1c8..7af0569fe4c 100644
--- a/net/dccp/Makefile
+++ b/net/dccp/Makefile
@@ -11,6 +11,8 @@ dccp-$(CONFIG_IP_DCCP_ACKVEC) += ackvec.o
obj-$(CONFIG_INET_DCCP_DIAG) += dccp_diag.o
+dccp-$(CONFIG_SYSCTL) += sysctl.o
+
dccp_diag-y := diag.o
obj-y += ccids/
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 1764adb4f15..f059541f5a1 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -433,4 +433,18 @@ static inline void timeval_sub_usecs(struct timeval *tv,
}
}
+#ifdef CONFIG_SYSCTL
+extern int dccp_sysctl_init(void);
+extern void dccp_sysctl_exit(void);
+#else
+static inline int dccp_sysctl_init(void)
+{
+ return 0;
+}
+
+static inline void dccp_sysctl_exit(void)
+{
+}
+#endif
+
#endif /* _DCCP_H */
diff --git a/net/dccp/options.c b/net/dccp/options.c
index 7d73b33a604..3ecd319c0f5 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -23,19 +23,21 @@
#include "dccp.h"
#include "feat.h"
-/* stores the default values for new connection. may be changed with sysctl */
-static const struct dccp_options dccpo_default_values = {
- .dccpo_sequence_window = DCCPF_INITIAL_SEQUENCE_WINDOW,
- .dccpo_rx_ccid = DCCPF_INITIAL_CCID,
- .dccpo_tx_ccid = DCCPF_INITIAL_CCID,
- .dccpo_ack_ratio = DCCPF_INITIAL_ACK_RATIO,
- .dccpo_send_ack_vector = DCCPF_INITIAL_SEND_ACK_VECTOR,
- .dccpo_send_ndp_count = DCCPF_INITIAL_SEND_NDP_COUNT,
-};
+int dccp_feat_default_sequence_window = DCCPF_INITIAL_SEQUENCE_WINDOW;
+int dccp_feat_default_rx_ccid = DCCPF_INITIAL_CCID;
+int dccp_feat_default_tx_ccid = DCCPF_INITIAL_CCID;
+int dccp_feat_default_ack_ratio = DCCPF_INITIAL_ACK_RATIO;
+int dccp_feat_default_send_ack_vector = DCCPF_INITIAL_SEND_ACK_VECTOR;
+int dccp_feat_default_send_ndp_count = DCCPF_INITIAL_SEND_NDP_COUNT;
void dccp_options_init(struct dccp_options *dccpo)
{
- memcpy(dccpo, &dccpo_default_values, sizeof(*dccpo));
+ dccpo->dccpo_sequence_window = dccp_feat_default_sequence_window;
+ dccpo->dccpo_rx_ccid = dccp_feat_default_rx_ccid;
+ dccpo->dccpo_tx_ccid = dccp_feat_default_tx_ccid;
+ dccpo->dccpo_ack_ratio = dccp_feat_default_ack_ratio;
+ dccpo->dccpo_send_ack_vector = dccp_feat_default_send_ack_vector;
+ dccpo->dccpo_send_ndp_count = dccp_feat_default_send_ndp_count;
}
static u32 dccp_decode_value_var(const unsigned char *bf, const u8 len)
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 53735ee2bbd..6403e9306dd 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -934,11 +934,17 @@ static int __init dccp_init(void)
if (rc)
goto out_unregister_protosw;
- rc = dccp_ctl_sock_init();
+ rc = dccp_sysctl_init();
if (rc)
goto out_ackvec_exit;
+
+ rc = dccp_ctl_sock_init();
+ if (rc)
+ goto out_sysctl_exit;
out:
return rc;
+out_sysctl_exit:
+ dccp_sysctl_exit();
out_ackvec_exit:
dccp_ackvec_exit();
out_unregister_protosw:
@@ -983,6 +989,7 @@ static void __exit dccp_fini(void)
kmem_cache_destroy(dccp_hashinfo.bind_bucket_cachep);
proto_unregister(&dccp_prot);
dccp_ackvec_exit();
+ dccp_sysctl_exit();
}
module_init(dccp_init);
diff --git a/net/dccp/sysctl.c b/net/dccp/sysctl.c
new file mode 100644
index 00000000000..64c89e9c229
--- /dev/null
+++ b/net/dccp/sysctl.c
@@ -0,0 +1,124 @@
+/*
+ * net/dccp/sysctl.c
+ *
+ * An implementation of the DCCP protocol
+ * Arnaldo Carvalho de Melo <acme@mandriva.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License v2
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+
+#ifndef CONFIG_SYSCTL
+#error This file should not be compiled without CONFIG_SYSCTL defined
+#endif
+
+extern int dccp_feat_default_sequence_window;
+extern int dccp_feat_default_rx_ccid;
+extern int dccp_feat_default_tx_ccid;
+extern int dccp_feat_default_ack_ratio;
+extern int dccp_feat_default_send_ack_vector;
+extern int dccp_feat_default_send_ndp_count;
+
+static struct ctl_table dccp_default_table[] = {
+ {
+ .ctl_name = NET_DCCP_DEFAULT_SEQ_WINDOW,
+ .procname = "seq_window",
+ .data = &dccp_feat_default_sequence_window,
+ .maxlen = sizeof(dccp_feat_default_sequence_window),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .ctl_name = NET_DCCP_DEFAULT_RX_CCID,
+ .procname = "rx_ccid",
+ .data = &dccp_feat_default_rx_ccid,
+ .maxlen = sizeof(dccp_feat_default_rx_ccid),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .ctl_name = NET_DCCP_DEFAULT_TX_CCID,
+ .procname = "tx_ccid",
+ .data = &dccp_feat_default_tx_ccid,
+ .maxlen = sizeof(dccp_feat_default_tx_ccid),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .ctl_name = NET_DCCP_DEFAULT_ACK_RATIO,
+ .procname = "ack_ratio",
+ .data = &dccp_feat_default_ack_ratio,
+ .maxlen = sizeof(dccp_feat_default_ack_ratio),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .ctl_name = NET_DCCP_DEFAULT_SEND_ACKVEC,
+ .procname = "send_ackvec",
+ .data = &dccp_feat_default_send_ack_vector,
+ .maxlen = sizeof(dccp_feat_default_send_ack_vector),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ {
+ .ctl_name = NET_DCCP_DEFAULT_SEND_NDP,
+ .procname = "send_ndp",
+ .data = &dccp_feat_default_send_ndp_count,
+ .maxlen = sizeof(dccp_feat_default_send_ndp_count),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+ { .ctl_name = 0, }
+};
+
+static struct ctl_table dccp_table[] = {
+ {
+ .ctl_name = NET_DCCP_DEFAULT,
+ .procname = "default",
+ .mode = 0555,
+ .child = dccp_default_table,
+ },
+ { .ctl_name = 0, },
+};
+
+static struct ctl_table dccp_dir_table[] = {
+ {
+ .ctl_name = NET_DCCP,
+ .procname = "dccp",
+ .mode = 0555,
+ .child = dccp_table,
+ },
+ { .ctl_name = 0, },
+};
+
+static struct ctl_table dccp_root_table[] = {
+ {
+ .ctl_name = CTL_NET,
+ .procname = "net",
+ .mode = 0555,
+ .child = dccp_dir_table,
+ },
+ { .ctl_name = 0, },
+};
+
+static struct ctl_table_header *dccp_table_header;
+
+int __init dccp_sysctl_init(void)
+{
+ dccp_table_header = register_sysctl_table(dccp_root_table, 1);
+
+ return dccp_table_header != NULL ? 0 : -ENOMEM;
+}
+
+void dccp_sysctl_exit(void)
+{
+ if (dccp_table_header != NULL) {
+ unregister_sysctl_table(dccp_table_header);
+ dccp_table_header = NULL;
+ }
+}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 12:20:16 +0000