patch-2.3.99-pre2 linux/net/ipv4/netfilter/ipt_tos.c
Next file: linux/net/ipv4/netfilter/ipt_unclean.c
Previous file: linux/net/ipv4/netfilter/ipt_state.c
Back to the patch index
Back to the overall index
- Lines: 54
- Date:
Fri Mar 17 10:56:20 2000
- Orig file:
v2.3.99-pre1/linux/net/ipv4/netfilter/ipt_tos.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.99-pre1/linux/net/ipv4/netfilter/ipt_tos.c linux/net/ipv4/netfilter/ipt_tos.c
@@ -0,0 +1,53 @@
+/* Kernel module to match TOS values. */
+#include <linux/module.h>
+#include <linux/skbuff.h>
+
+#include <linux/netfilter_ipv4/ipt_tos.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+
+EXPORT_NO_SYMBOLS;
+
+static int
+match(const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ const void *matchinfo,
+ int offset,
+ const void *hdr,
+ u_int16_t datalen,
+ int *hotdrop)
+{
+ const struct ipt_tos_info *info = matchinfo;
+ const struct iphdr *iph = skb->nh.iph;
+
+ return (iph->tos == info->tos) ^ info->invert;
+}
+
+static int
+checkentry(const char *tablename,
+ const struct ipt_ip *ip,
+ void *matchinfo,
+ unsigned int matchsize,
+ unsigned int hook_mask)
+{
+ if (matchsize != IPT_ALIGN(sizeof(struct ipt_tos_info)))
+ return 0;
+
+ return 1;
+}
+
+static struct ipt_match tos_match
+= { { NULL, NULL }, "tos", &match, &checkentry, THIS_MODULE };
+
+static int __init init(void)
+{
+ return ipt_register_match(&tos_match);
+}
+
+static void __exit fini(void)
+{
+ ipt_unregister_match(&tos_match);
+}
+
+module_init(init);
+module_exit(fini);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)