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author | Claudiu Manoil <claudiu.manoil@nxp.com> | 2019-05-21 19:52:55 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2019-05-22 12:08:43 -0700 |
commit | 40a1578d631a8ac1cf0ef797c435114107747859 (patch) | |
tree | 9d53e1ae9ea1efb170babf1d107f9246ac53cdff /Documentation | |
parent | 7dc2bccab0ee37ac28096b8fcdc390a679a15841 (diff) | |
download | linux-40a1578d631a8ac1cf0ef797c435114107747859.tar.bz2 |
ocelot: Dont allocate another multicast list, use __dev_mc_sync
Doing kmalloc in atomic context is always an issue,
more so for a list that can grow significantly.
Turns out that the driver only uses the duplicated
list of multicast mac addresses to keep track of
what addresses to delete from h/w before committing
the new list from kernel to h/w back again via set_rx_mode,
every time this list gets updated by the kernel.
Given that the h/w knows how to add and delete mac addresses
based on the mac address value alone, __dev_mc_sync should be
the much better choice of kernel API for these operations
avoiding the considerable overhead of maintaining a duplicated
list in the driver.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Tested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions