RDMA: Constify netdev->dev_addr accesses

mainline inclusion
from mainline-v5.15-rc5
commit fd92213e
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4QOTS
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?id=fd92213e9af3b8e5cb3b4d3bf925c9baafb46c9e

---------------------------------------------------------------------

netdev->dev_addr will become const soon, make sure drivers propagate the
qualifier.

Link: https://lore.kernel.org/r/20211019182604.1441387-4-kuba@kernel.orgSigned-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NLeon Romanovsky <leonro@nvidia.com>
Acked-by: NDennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>
sigend-off-by: NGuofeng Yue <yueguofeng@hisilicon.com>
Reviewed-by: NYangyang Li <liyangyang20@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/infiniband/hw/bnxt_re/qplib_res.c

@@ -572,7 +572,7 @@ int bnxt_qplib_alloc_ctx(struct bnxt_qplib_res *res,
 }
 
 /* GUID */
-void bnxt_qplib_get_guid(u8 *dev_addr, u8 *guid)
+void bnxt_qplib_get_guid(const u8 *dev_addr, u8 *guid)
 {
 	u8 mac[ETH_ALEN];
 

drivers/infiniband/hw/bnxt_re/qplib_res.h

@@ -351,7 +351,7 @@ void bnxt_qplib_free_hwq(struct bnxt_qplib_res *res,
 			 struct bnxt_qplib_hwq *hwq);
 int bnxt_qplib_alloc_init_hwq(struct bnxt_qplib_hwq *hwq,
 			      struct bnxt_qplib_hwq_attr *hwq_attr);
-void bnxt_qplib_get_guid(u8 *dev_addr, u8 *guid);
+void bnxt_qplib_get_guid(const u8 *dev_addr, u8 *guid);
 int bnxt_qplib_alloc_pd(struct bnxt_qplib_pd_tbl *pd_tbl,
 			struct bnxt_qplib_pd *pd);
 int bnxt_qplib_dealloc_pd(struct bnxt_qplib_res *res,

drivers/infiniband/hw/bnxt_re/qplib_sp.c

@@ -275,8 +275,8 @@ int bnxt_qplib_del_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 }
 
 int bnxt_qplib_add_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
-			struct bnxt_qplib_gid *gid, u8 *smac, u16 vlan_id,
-			bool update, u32 *index)
+			struct bnxt_qplib_gid *gid, const u8 *smac,
+			u16 vlan_id, bool update, u32 *index)
 {
 	struct bnxt_qplib_res *res = to_bnxt_qplib(sgid_tbl,
 						   struct bnxt_qplib_res,
@@ -367,7 +367,7 @@ int bnxt_qplib_add_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 
 int bnxt_qplib_update_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 			   struct bnxt_qplib_gid *gid, u16 gid_idx,
-			   u8 *smac)
+			   const u8 *smac)
 {
 	struct bnxt_qplib_res *res = to_bnxt_qplib(sgid_tbl,
 						   struct bnxt_qplib_res,

drivers/infiniband/hw/bnxt_re/qplib_sp.h

@@ -227,10 +227,11 @@ int bnxt_qplib_get_sgid(struct bnxt_qplib_res *res,
 int bnxt_qplib_del_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
 			struct bnxt_qplib_gid *gid, u16 vlan_id, bool update);
 int bnxt_qplib_add_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
-			struct bnxt_qplib_gid *gid, u8 *mac, u16 vlan_id,
+			struct bnxt_qplib_gid *gid, const u8 *mac, u16 vlan_id,
 			bool update, u32 *index);
 int bnxt_qplib_update_sgid(struct bnxt_qplib_sgid_tbl *sgid_tbl,
-			   struct bnxt_qplib_gid *gid, u16 gid_idx, u8 *smac);
+			   struct bnxt_qplib_gid *gid, u16 gid_idx,
+			   const u8 *smac);
 int bnxt_qplib_get_pkey(struct bnxt_qplib_res *res,
 			struct bnxt_qplib_pkey_tbl *pkey_tbl, u16 index,
 			u16 *pkey);

drivers/infiniband/hw/hfi1/ipoib_main.c

@@ -11,7 +11,7 @@
 #include "ipoib.h"
 #include "hfi.h"
 
-static u32 qpn_from_mac(u8 *mac_arr)
+static u32 qpn_from_mac(const u8 *mac_arr)
 {
 	return (u32)mac_arr[1] << 16 | mac_arr[2] << 8 | mac_arr[3];
 }

drivers/infiniband/hw/hns/hns_roce_device.h

@@ -859,7 +859,8 @@ struct hns_roce_hw {
 	bool (*chk_mbox_avail)(struct hns_roce_dev *hr_dev, bool *is_busy);
 	int (*set_gid)(struct hns_roce_dev *hr_dev, int gid_index,
 		       const union ib_gid *gid, const struct ib_gid_attr *attr);
-	int (*set_mac)(struct hns_roce_dev *hr_dev, u8 phy_port, u8 *addr);
+	int (*set_mac)(struct hns_roce_dev *hr_dev, u8 phy_port,
+		       const u8 *addr);
 	int (*write_mtpt)(struct hns_roce_dev *hr_dev, void *mb_buf,
 			  struct hns_roce_mr *mr);
 	int (*rereg_write_mtpt)(struct hns_roce_dev *hr_dev,

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -2975,7 +2975,7 @@ static int hns_roce_v2_set_gid(struct hns_roce_dev *hr_dev, int gid_index,
 }
 
 static int hns_roce_v2_set_mac(struct hns_roce_dev *hr_dev, u8 phy_port,
-			       u8 *addr)
+			       const u8 *addr)
 {
 	struct hns_roce_cmq_desc desc;
 	struct hns_roce_cfg_smac_tb *smac_tb =
@@ -4300,10 +4300,10 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
 	dma_addr_t trrl_ba;
 	dma_addr_t irrl_ba;
 	enum ib_mtu ib_mtu;
+	const u8 *smac;
 	u8 lp_pktn_ini;
 	u64 *mtts;
 	u8 *dmac;
-	u8 *smac;
 	int mtu;
 	int port;
 	int ret;
@@ -4356,7 +4356,7 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
 
 	port = (attr_mask & IB_QP_PORT) ? (attr->port_num - 1) : hr_qp->port;
 
-	smac = (u8 *)hr_dev->dev_addr[port];
+	smac = (const u8 *)hr_dev->dev_addr[port];
 	dmac = (u8 *)attr->ah_attr.roce.dmac;
 	/* when dmac equals smac or loop_idc is 1, it should loopback */
 	if (ether_addr_equal_unaligned(dmac, smac) ||

drivers/infiniband/hw/hns/hns_roce_main.c

@@ -41,7 +41,8 @@
 #include "hns_roce_device.h"
 #include "hns_roce_hem.h"
 
-static int hns_roce_set_mac(struct hns_roce_dev *hr_dev, u8 port, u8 *addr)
+static int hns_roce_set_mac(struct hns_roce_dev *hr_dev, u32 port,
+			    const u8 *addr)
 {
 	u8 phy_port;
 	u32 i;

drivers/infiniband/hw/usnic/usnic_fwd.c

@@ -103,7 +103,7 @@ void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev)
 	kfree(ufdev);
 }
 
-void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN])
+void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, const char mac[ETH_ALEN])
 {
 	spin_lock(&ufdev->lock);
 	memcpy(&ufdev->mac, mac, sizeof(ufdev->mac));

drivers/infiniband/hw/usnic/usnic_fwd.h

@@ -74,7 +74,7 @@ struct usnic_filter_action {
 struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev);
 void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev);
 
-void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN]);
+void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, const char mac[ETH_ALEN]);
 void usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr);
 void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev);
 void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev);