qed: Prevent over-usage of vlan credits by PF
authorYuval Mintz <Yuval.Mintz@qlogic.com>
Wed, 27 Jul 2016 11:45:24 +0000 (14:45 +0300)
committerDavid S. Miller <davem@davemloft.net>
Sun, 31 Jul 2016 03:34:03 +0000 (20:34 -0700)
commit25eb8d46e4a0ad7aea11e73e47c20c0e400e57f1
tree672895221de189c9970f4874f2cd90fe91946592
parentd572c4308fdecc95a84e747b8a13c2fa10a5fff6
qed: Prevent over-usage of vlan credits by PF

Each PF/VF has a limited number of vlan filters for
configuration purposes; This information is passed to qede
and is used to prevent over-usage - once a vlan is to be
configured and no filter credit is available, the driver
would switch into working in vlan-promisc mode.

Problem is the credit pool is shared by both PFs and VFs,
and currently PFs aren't deducting the filters that are
reserved for their VFs from their quota, which may lead
to some vlan filters failing unknowingly due to lack of credit.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/qlogic/qed/qed_l2.c