diff options
Diffstat (limited to 'net/sched/em_nbyte.c')
| -rw-r--r-- | net/sched/em_nbyte.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/net/sched/em_nbyte.c b/net/sched/em_nbyte.c index 07c10bac06a0..c65ffa5fff94 100644 --- a/net/sched/em_nbyte.c +++ b/net/sched/em_nbyte.c @@ -1,11 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * 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> */ @@ -20,7 +16,7 @@ struct nbyte_data { struct tcf_em_nbyte hdr; - char pattern[0]; + char pattern[]; }; static int em_nbyte_change(struct net *net, void *data, int data_len, @@ -35,7 +31,7 @@ static int em_nbyte_change(struct net *net, void *data, int data_len, em->datalen = sizeof(*nbyte) + nbyte->len; em->data = (unsigned long)kmemdup(data, em->datalen, GFP_KERNEL); if (em->data == 0UL) - return -ENOBUFS; + return -ENOMEM; return 0; } @@ -46,6 +42,8 @@ static int em_nbyte_match(struct sk_buff *skb, struct tcf_ematch *em, struct nbyte_data *nbyte = (struct nbyte_data *) em->data; unsigned char *ptr = tcf_get_base_ptr(skb, nbyte->hdr.layer); + if (!ptr) + return 0; ptr += nbyte->hdr.off; if (!tcf_valid_offset(skb, ptr, nbyte->hdr.len)) @@ -72,6 +70,7 @@ static void __exit exit_em_nbyte(void) tcf_em_unregister(&em_nbyte_ops); } +MODULE_DESCRIPTION("ematch classifier for arbitrary skb multi-bytes"); MODULE_LICENSE("GPL"); module_init(init_em_nbyte); |