linux-toradex.git/include/linux/etherdevice.h, branch v6.6-rc5

net: add helper eth_addr_add()

2023-02-06T18:06:58+00:00

Add a helper to add an offset to a ethernet address. This comes in handy
if you have a base ethernet address for multiple interfaces.

Signed-off-by: Michael Walle 
Reviewed-by: Andrew Lunn 
Acked-by: Jakub Kicinski 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20230206134356.839737-9-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

ethernet: Add helpers to recognize addresses mapped to IP multicast

2022-08-29T11:57:38+00:00

IP multicast must sometimes be discriminated from non-IP multicast,
e.g. when determining the forwarding behavior of a given group in the
presence of multicast router ports on an offloaded bridge. Therefore,
provide helpers to identify these groups.

Signed-off-by: Casper Andersson 
Signed-off-by: David S. Miller

etherdevice: Adjust ether_addr* prototypes to silence -Wstringop-overead

2022-02-13T15:59:38+00:00

With GCC 12, -Wstringop-overread was warning about an implicit cast from
char[6] to char[8]. However, the extra 2 bytes are always thrown away,
alignment doesn't matter, and the risk of hitting the edge of unallocated
memory has been accepted, so this prototype can just be converted to a
regular char *. Silences:

net/core/dev.c: In function ‘bpf_prog_run_generic_xdp’: net/core/dev.c:4618:21: warning: ‘ether_addr_equal_64bits’ reading 8 bytes from a region of size 6 [-Wstringop-overread]
 4618 |         orig_host = ether_addr_equal_64bits(eth->h_dest, > skb->dev->dev_addr);
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/core/dev.c:4618:21: note: referencing argument 1 of type ‘const u8[8]’ {aka ‘const unsigned char[8]’}
net/core/dev.c:4618:21: note: referencing argument 2 of type ‘const u8[8]’ {aka ‘const unsigned char[8]’}
In file included from net/core/dev.c:91: include/linux/etherdevice.h:375:20: note: in a call to function ‘ether_addr_equal_64bits’
  375 | static inline bool ether_addr_equal_64bits(const u8 addr1[6+2],
      |                    ^~~~~~~~~~~~~~~~~~~~~~~

Reported-by: Marc Kleine-Budde 
Tested-by: Marc Kleine-Budde 
Link: https://lore.kernel.org/netdev/20220212090811.uuzk6d76agw2vv73@pengutronix.de
Cc: Jakub Kicinski 
Cc: "David S. Miller" 
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook 
Signed-off-by: David S. Miller

ethernet: add a helper for assigning port addresses

2021-10-19T11:46:24+00:00

We have 5 drivers which offset base MAC addr by port id.
Create a helper for them.

This helper takes care of overflows, which some drivers
did not do, please complain if that's going to break
anything!

Signed-off-by: Jakub Kicinski 
Reviewed-by: Vladimir Oltean 
Reviewed-by: Shannon Nelson 
Reviewed-by: Ido Schimmel 
Signed-off-by: David S. Miller

ethernet: remove random_ether_addr()

2021-10-14T16:24:09+00:00

random_ether_addr() was the original name of the helper which
was kept for backward compatibility (?) after the rename in
commit 0a4dd594982a ("etherdevice: Rename random_ether_addr
to eth_random_addr").

We have a single random_ether_addr() caller left in tree
while there are 70 callers of eth_random_addr().
Time to drop this define.

Reviewed-by: Simon Horman 
Link: https://lore.kernel.org/r/20211013205450.328092-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

ethernet: make eth_hw_addr_random() use dev_addr_set()

2021-10-14T16:22:13+00:00

Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Signed-off-by: Jakub Kicinski

eth: platform: add a helper for loading netdev->dev_addr

2021-10-08T13:54:33+00:00

Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

There is a handful of drivers which pass netdev->dev_addr as
the destination buffer to eth_platform_get_mac_address().
Add a helper which takes a dev pointer instead, so it can call
an appropriate helper.

Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2021-10-07T22:24:06+00:00

No conflicts.

Signed-off-by: Jakub Kicinski

eth: fwnode: add a helper for loading netdev->dev_addr

2021-10-07T12:39:51+00:00

Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

There is a handful of drivers which pass netdev->dev_addr as
the destination buffer to device_get_mac_address(). Add a helper
which takes a dev pointer instead, so it can call an appropriate
helper.

Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller

eth: fwnode: remove the addr len from mac helpers

2021-10-07T12:39:51+00:00

All callers pass in ETH_ALEN and the function itself
will return -EINVAL for any other address length.
Just assume it's ETH_ALEN like all other mac address
helpers (nvm, of, platform).

Signed-off-by: Jakub Kicinski 
Signed-off-by: David S. Miller