system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-06 18:01:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

eth: Move IPv4/IPv6 multicast address bases to their own symbols

Browse source 
As these addresses can be useful outside of checking if an address
is a multicast address (for example in device drivers) make them
accessible to users of etherdevice.h to avoid code duplication.

Signed-off-by: Diogo Ivo <diogo.ivo@siemens.com>
Reviewed-by: MD Danish Anwar <danishanwar@ti.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Diogo Ivo 2024-04-03 11:48:12 +01:00 committed by Paolo Abeni
parent dc073430db
commit e1900d7ba9
1 changed files with 8 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
include/linux/etherdevice.h
View file

@ -71,6 +71,12 @@ static const u8 eth_reserved_addr_base[ETH_ALEN] __aligned(2) =
{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
#define eth_stp_addr eth_reserved_addr_base
static const u8 eth_ipv4_mcast_addr_base[ETH_ALEN] __aligned(2) =
{ 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
static const u8 eth_ipv6_mcast_addr_base[ETH_ALEN] __aligned(2) =
{ 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
/**
* is_link_local_ether_addr - Determine if given Ethernet address is link-local
* @addr: Pointer to a six-byte array containing the Ethernet address
@ -430,18 +436,16 @@ static inline bool ether_addr_equal_masked(const u8 *addr1, const u8 *addr2,
static inline bool ether_addr_is_ipv4_mcast(const u8 *addr)
{
u8 base[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
u8 mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
return ether_addr_equal_masked(addr, base, mask);
return ether_addr_equal_masked(addr, eth_ipv4_mcast_addr_base, mask);
}
static inline bool ether_addr_is_ipv6_mcast(const u8 *addr)
{
u8 base[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
u8 mask[ETH_ALEN] = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
return ether_addr_equal_masked(addr, base, mask);
return ether_addr_equal_masked(addr, eth_ipv6_mcast_addr_base, mask);
}
static inline bool ether_addr_is_ip_mcast(const u8 *addr)