qed: Consider TX tcs while deriving the max num_queues for PF.

BugLink: https://bugs.launchpad.net/bugs/1837813
[ Upstream commit fb1faab74ddef9ec2d841d54e5d0912a097b3abe ]

Max supported queues is derived incorrectly in the case of multi-CoS.
Need to consider TCs while calculating num_queues for PF.

Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c
index 4ffdde755db7e228ab30400516fee4b732559977..62cde3854a5cd42dc99bd40e9276e5d115bdd427 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_l2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c
@@ -2170,7 +2170,7 @@ static int qed_fill_eth_dev_info(struct qed_dev *cdev,
                        u16 num_queues = 0;
 
                        /* Since the feature controls only queue-zones,
-                        * make sure we have the contexts [rx, tx, xdp] to
+                        * make sure we have the contexts [rx, xdp, tcs] to
                         * match.
                         */
                        for_each_hwfn(cdev, i) {
@@ -2180,7 +2180,8 @@ static int qed_fill_eth_dev_info(struct qed_dev *cdev,
                                u16 cids;
 
                                cids = hwfn->pf_params.eth_pf_params.num_cons;
-                               num_queues += min_t(u16, l2_queues, cids / 3);
+                               cids /= (2 + info->num_tc);
+                               num_queues += min_t(u16, l2_queues, cids);
                        }
 
                        /* queues might theoretically be >256, but interrupts'