修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/net/sctp/sysctl.c
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@@ -79,17 +79,18 @@
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 	{ /* sentinel */ }
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 };
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+/* The following index defines are used in sctp_sysctl_net_register().
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+ * If you add new items to the sctp_net_table, please ensure that
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+ * the index values of these defines hold the same meaning indicated by
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+ * their macro names when they appear in sctp_net_table.
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+ */
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+#define SCTP_RTO_MIN_IDX       0
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+#define SCTP_RTO_MAX_IDX       1
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+#define SCTP_PF_RETRANS_IDX    2
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+#define SCTP_PS_RETRANS_IDX    3
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+
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 static struct ctl_table sctp_net_table[] = {
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-	{
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-		.procname	= "rto_initial",
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-		.data		= &init_net.sctp.rto_initial,
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-		.maxlen		= sizeof(unsigned int),
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-		.mode		= 0644,
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-		.proc_handler	= proc_dointvec_minmax,
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-		.extra1         = SYSCTL_ONE,
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-		.extra2         = &timer_max
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-	},
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-	{
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+	[SCTP_RTO_MIN_IDX] = {
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 		.procname	= "rto_min",
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 		.data		= &init_net.sctp.rto_min,
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 		.maxlen		= sizeof(unsigned int),
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@@ -98,13 +99,40 @@
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 		.extra1         = SYSCTL_ONE,
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 		.extra2         = &init_net.sctp.rto_max
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 	},
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-	{
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+	[SCTP_RTO_MAX_IDX] =  {
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 		.procname	= "rto_max",
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 		.data		= &init_net.sctp.rto_max,
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 		.maxlen		= sizeof(unsigned int),
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 		.mode		= 0644,
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 		.proc_handler	= proc_sctp_do_rto_max,
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 		.extra1         = &init_net.sctp.rto_min,
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+		.extra2         = &timer_max
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+	},
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+	[SCTP_PF_RETRANS_IDX] = {
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+		.procname	= "pf_retrans",
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+		.data		= &init_net.sctp.pf_retrans,
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+		.maxlen		= sizeof(int),
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+		.mode		= 0644,
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+		.proc_handler	= proc_dointvec_minmax,
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+		.extra1		= SYSCTL_ZERO,
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+		.extra2		= &init_net.sctp.ps_retrans,
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+	},
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+	[SCTP_PS_RETRANS_IDX] = {
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+		.procname	= "ps_retrans",
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+		.data		= &init_net.sctp.ps_retrans,
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+		.maxlen		= sizeof(int),
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+		.mode		= 0644,
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+		.proc_handler	= proc_dointvec_minmax,
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+		.extra1		= &init_net.sctp.pf_retrans,
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+		.extra2		= &ps_retrans_max,
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+	},
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+	{
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+		.procname	= "rto_initial",
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+		.data		= &init_net.sctp.rto_initial,
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+		.maxlen		= sizeof(unsigned int),
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+		.mode		= 0644,
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+		.proc_handler	= proc_dointvec_minmax,
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+		.extra1         = SYSCTL_ONE,
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 		.extra2         = &timer_max
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 	},
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 	{
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@@ -201,24 +229,6 @@
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 		.proc_handler	= proc_dointvec_minmax,
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 		.extra1		= SYSCTL_ONE,
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 		.extra2		= SYSCTL_INT_MAX,
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-	},
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-	{
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-		.procname	= "pf_retrans",
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-		.data		= &init_net.sctp.pf_retrans,
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-		.maxlen		= sizeof(int),
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-		.mode		= 0644,
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-		.proc_handler	= proc_dointvec_minmax,
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-		.extra1		= SYSCTL_ZERO,
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-		.extra2		= &init_net.sctp.ps_retrans,
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-	},
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-	{
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-		.procname	= "ps_retrans",
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-		.data		= &init_net.sctp.ps_retrans,
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-		.maxlen		= sizeof(int),
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-		.mode		= 0644,
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-		.proc_handler	= proc_dointvec_minmax,
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-		.extra1		= &init_net.sctp.pf_retrans,
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-		.extra2		= &ps_retrans_max,
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 	},
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 	{
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 		.procname	= "sndbuf_policy",
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@@ -489,6 +499,11 @@
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 	for (i = 0; table[i].data; i++)
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 		table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
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+	table[SCTP_RTO_MIN_IDX].extra2 = &net->sctp.rto_max;
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+	table[SCTP_RTO_MAX_IDX].extra1 = &net->sctp.rto_min;
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+	table[SCTP_PF_RETRANS_IDX].extra2 = &net->sctp.ps_retrans;
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+	table[SCTP_PS_RETRANS_IDX].extra1 = &net->sctp.pf_retrans;
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+
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 	net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
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 	if (net->sctp.sysctl_header == NULL) {
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 		kfree(table);