netdev - [PATCH net-next 10/15] bnxt_en: Set the db_offset on 57500 chips for the RDMA MSIX entries.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon,  4 May 2020 04:50:36 -0400
From:   Michael Chan <michael.chan@...adcom.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org
Subject: [PATCH net-next 10/15] bnxt_en: Set the db_offset on 57500 chips for the RDMA MSIX entries.

The driver provides completion ring or NQ doorbell offset for each
MSIX entry requested by the RDMA driver.  The NQ offset on 57500
chips is different than legacy chips.  Set it correctly based on
chip type for correctness.  The RDMA driver is ignoring this field
for the 57500 chips so it is not causing any problem.

Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
index 4a316c4..4b40778 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
@@ -104,7 +104,13 @@ static void bnxt_fill_msix_vecs(struct bnxt *bp, struct bnxt_msix_entry *ent)
 	for (i = 0; i < num_msix; i++) {
 		ent[i].vector = bp->irq_tbl[idx + i].vector;
 		ent[i].ring_idx = idx + i;
-		ent[i].db_offset = (idx + i) * 0x80;
+		if (bp->flags & BNXT_FLAG_CHIP_P5) {
+			ent[i].db_offset = DB_PF_OFFSET_P5;
+			if (BNXT_VF(bp))
+				ent[i].db_offset = DB_VF_OFFSET_P5;
+		} else {
+			ent[i].db_offset = (idx + i) * 0x80;
+		}
 	}
 }

-- 
2.5.1