]> git.baikalelectronics.ru Git - kernel.git/commit
net: mvpp2: Add TCAM entry to drop flow control pause frames
authorStefan Chulski <stefanc@marvell.com>
Thu, 17 Dec 2020 18:30:17 +0000 (20:30 +0200)
committerJakub Kicinski <kuba@kernel.org>
Sat, 19 Dec 2020 18:11:56 +0000 (10:11 -0800)
commit55ad55ad7837c5968efd08e25e48fe30a68e390d
treed70a7b80fe5379ba5e031cd03676c26f896b80f6
parent03f4ffdc467af9dcde5cd6cc6015bc7461cdbd15
net: mvpp2: Add TCAM entry to drop flow control pause frames

Issue:
Flow control frame used to pause GoP(MAC) was delivered to the CPU
and created a load on the CPU. Since XOFF/XON frames are used only
by MAC, these frames should be dropped inside MAC.

Fix:
According to 802.3-2012 - IEEE Standard for Ethernet pause frame
has unique destination MAC address 01-80-C2-00-00-01.
Add TCAM parser entry to track and drop pause frames by destination MAC.

Fixes: dc37d05f9885 ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Link: https://lore.kernel.org/r/1608229817-21951-1-git-send-email-stefanc@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.c
drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.h