Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/sched/em_nbyte.c b/net/sched/em_nbyte.c
new file mode 100644
index 0000000..71ea926
--- /dev/null
+++ b/net/sched/em_nbyte.c
@@ -0,0 +1,82 @@
+/*
+ * net/sched/em_nbyte.c N-Byte ematch
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: Thomas Graf <tgraf@suug.ch>
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/skbuff.h>
+#include <linux/tc_ematch/tc_em_nbyte.h>
+#include <net/pkt_cls.h>
+
+struct nbyte_data
+{
+ struct tcf_em_nbyte hdr;
+ char pattern[0];
+};
+
+static int em_nbyte_change(struct tcf_proto *tp, void *data, int data_len,
+ struct tcf_ematch *em)
+{
+ struct tcf_em_nbyte *nbyte = data;
+
+ if (data_len < sizeof(*nbyte) ||
+ data_len < (sizeof(*nbyte) + nbyte->len))
+ return -EINVAL;
+
+ em->datalen = sizeof(*nbyte) + nbyte->len;
+ em->data = (unsigned long) kmalloc(em->datalen, GFP_KERNEL);
+ if (em->data == 0UL)
+ return -ENOBUFS;
+
+ memcpy((void *) em->data, data, em->datalen);
+
+ return 0;
+}
+
+static int em_nbyte_match(struct sk_buff *skb, struct tcf_ematch *em,
+ struct tcf_pkt_info *info)
+{
+ struct nbyte_data *nbyte = (struct nbyte_data *) em->data;
+ unsigned char *ptr = tcf_get_base_ptr(skb, nbyte->hdr.layer);
+
+ ptr += nbyte->hdr.off;
+
+ if (!tcf_valid_offset(skb, ptr, nbyte->hdr.len))
+ return 0;
+
+ return !memcmp(ptr + nbyte->hdr.off, nbyte->pattern, nbyte->hdr.len);
+}
+
+static struct tcf_ematch_ops em_nbyte_ops = {
+ .kind = TCF_EM_NBYTE,
+ .change = em_nbyte_change,
+ .match = em_nbyte_match,
+ .owner = THIS_MODULE,
+ .link = LIST_HEAD_INIT(em_nbyte_ops.link)
+};
+
+static int __init init_em_nbyte(void)
+{
+ return tcf_em_register(&em_nbyte_ops);
+}
+
+static void __exit exit_em_nbyte(void)
+{
+ tcf_em_unregister(&em_nbyte_ops);
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(init_em_nbyte);
+module_exit(exit_em_nbyte);