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ethernet: constify eth_get_headlen()'s data argument 

It's used only for flow dissection, which now takes constant data
pointers.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Lobakin 2021-03-14 11:11:41 +00:00 committed by David S. Miller
parent 805a25f3a1
commit 59753ce8b1
2 changed files with 2 additions and 2 deletions
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2
include/linux/etherdevice.h
View File

@ -29,7 +29,7 @@ struct device;
int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr);
unsigned char *arch_get_platform_mac_address(void);
int nvmem_get_mac_address(struct device *dev, void *addrbuf);
u32 eth_get_headlen(const struct net_device *dev, void *data, unsigned int len);
u32 eth_get_headlen(const struct net_device *dev, const void *data, u32 len);
__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
extern const struct header_ops eth_header_ops;

2
net/ethernet/eth.c
View File

@ -122,7 +122,7 @@ EXPORT_SYMBOL(eth_header);
* Make a best effort attempt to pull the length for all of the headers for
* a given frame in a linear buffer.
*/
u32 eth_get_headlen(const struct net_device *dev, void *data, unsigned int len)
u32 eth_get_headlen(const struct net_device *dev, const void *data, u32 len)
{
const unsigned int flags = FLOW_DISSECTOR_F_PARSE_1ST_FRAG;
const struct ethhdr *eth = (const struct ethhdr *)data;