mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git
synced 2026-04-03 23:38:12 -04:00
b7405dcf73
bond_header_parse() can loop if a stack of two bonding devices is setup,
because skb->dev always points to the hierarchy top.
Add new "const struct net_device *dev" parameter to
(struct header_ops)->parse() method to make sure the recursion
is bounded, and that the final leaf parse method is called.
Fixes: 950803f725 ("bonding: fix type confusion in bond_setup_by_slave()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiayuan Chen <jiayuan.chen@shopee.com>
Tested-by: Jiayuan Chen <jiayuan.chen@shopee.com>
Cc: Jay Vosburgh <jv@jvosburgh.net>
Cc: Andrew Lunn <andrew+netdev@lunn.ch>
Link: https://patch.msgid.link/20260315104152.1436867-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Global definitions for the Ethernet IEEE 802.3 interface.
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*
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* Version: @(#)if_ether.h 1.0.1a 02/08/94
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*
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* Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Donald Becker, <becker@super.org>
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* Alan Cox, <alan@lxorguk.ukuu.org.uk>
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* Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
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*/
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#ifndef _LINUX_IF_ETHER_H
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#define _LINUX_IF_ETHER_H
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#include <linux/skbuff.h>
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#include <uapi/linux/if_ether.h>
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/* XX:XX:XX:XX:XX:XX */
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#define MAC_ADDR_STR_LEN (3 * ETH_ALEN - 1)
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static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
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{
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return (struct ethhdr *)skb_mac_header(skb);
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}
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/* Prefer this version in TX path, instead of
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* skb_reset_mac_header() + eth_hdr()
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*/
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static inline struct ethhdr *skb_eth_hdr(const struct sk_buff *skb)
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{
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return (struct ethhdr *)skb->data;
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}
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static inline struct ethhdr *inner_eth_hdr(const struct sk_buff *skb)
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{
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return (struct ethhdr *)skb_inner_mac_header(skb);
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}
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int eth_header_parse(const struct sk_buff *skb, const struct net_device *dev,
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unsigned char *haddr);
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extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
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#endif /* _LINUX_IF_ETHER_H */
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