diff options
Diffstat (limited to 'net/802/psnap.c')
| -rw-r--r-- | net/802/psnap.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/net/802/psnap.c b/net/802/psnap.c index db6baf7cf6e9..389df460c8c4 100644 --- a/net/802/psnap.c +++ b/net/802/psnap.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * SNAP data link layer. Derived from 802.2 * * Alan Cox <alan@lxorguk.ukuu.org.uk>, * from the 802.2 layer by Greg Page. * Merged in additions from Greg Page's psnap.c. - * - * 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. */ #include <linux/module.h> @@ -34,7 +30,7 @@ static struct datalink_proto *find_snap_client(const unsigned char *desc) { struct datalink_proto *proto = NULL, *p; - list_for_each_entry_rcu(p, &snap_list, node) { + list_for_each_entry_rcu(p, &snap_list, node, lockdep_is_held(&snap_lock)) { if (!memcmp(p->type, desc, 5)) { proto = p; break; @@ -59,11 +55,11 @@ static int snap_rcv(struct sk_buff *skb, struct net_device *dev, goto drop; rcu_read_lock(); - proto = find_snap_client(skb_transport_header(skb)); + proto = find_snap_client(skb->data); if (proto) { /* Pass the frame on. */ - skb->transport_header += 5; skb_pull_rcsum(skb, 5); + skb_reset_transport_header(skb); rc = proto->rcvfunc(skb, dev, &snap_packet_type, orig_dev); } rcu_read_unlock(); @@ -83,7 +79,7 @@ drop: * Put a SNAP header on a frame and pass to 802.2 */ static int snap_request(struct datalink_proto *dl, - struct sk_buff *skb, u8 *dest) + struct sk_buff *skb, const u8 *dest) { memcpy(skb_push(skb, 5), dl->type, 5); llc_build_and_send_ui_pkt(snap_sap, skb, dest, snap_sap->laddr.lsap); @@ -164,4 +160,5 @@ void unregister_snap_client(struct datalink_proto *proto) kfree(proto); } +MODULE_DESCRIPTION("SNAP data link layer. Derived from 802.2"); MODULE_LICENSE("GPL"); |