Merge branch 'thunderx-next'

Aleksey Makarov says:

====================
net: thunderx: fix problems reported by static check tools

These are fixes for the problems that were reported by static check tools.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cavium/thunder/nic.h

@@ -11,6 +11,7 @@
 
 #include <linux/netdevice.h>
 #include <linux/interrupt.h>
+#include <linux/pci.h>
 #include "thunder_bgx.h"
 
 /* PCI device IDs */
@@ -300,7 +301,7 @@ struct nic_cfg_msg {
 	u8    vf_id;
 	u8    tns_mode;
 	u8    node_id;
-	u64   mac_addr;
+	u8    mac_addr[ETH_ALEN];
 };
 
 /* Qset configuration */
@@ -330,7 +331,7 @@ struct sq_cfg_msg {
 struct set_mac_msg {
 	u8    msg;
 	u8    vf_id;
-	u64   addr;
+	u8    mac_addr[ETH_ALEN];
 };
 
 /* Set Maximum frame size */
@@ -398,15 +399,22 @@ union nic_mbx {
 	struct bgx_link_status  link_status;
 };
 
+#define NIC_NODE_ID_MASK	0x03
+#define NIC_NODE_ID_SHIFT	44
+
+static inline int nic_get_node_id(struct pci_dev *pdev)
+{
+	u64 addr = pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM);
+	return ((addr >> NIC_NODE_ID_SHIFT) & NIC_NODE_ID_MASK);
+}
+
 int nicvf_set_real_num_queues(struct net_device *netdev,
 			      int tx_queues, int rx_queues);
 int nicvf_open(struct net_device *netdev);
 int nicvf_stop(struct net_device *netdev);
 int nicvf_send_msg_to_pf(struct nicvf *vf, union nic_mbx *mbx);
-void nicvf_config_cpi(struct nicvf *nic);
 void nicvf_config_rss(struct nicvf *nic);
 void nicvf_set_rss_key(struct nicvf *nic);
-void nicvf_free_skb(struct nicvf *nic, struct sk_buff *skb);
 void nicvf_set_ethtool_ops(struct net_device *netdev);
 void nicvf_update_stats(struct nicvf *nic);
 void nicvf_update_lmac_stats(struct nicvf *nic);

drivers/net/ethernet/cavium/thunder/nic_main.c

@@ -23,8 +23,6 @@
 struct nicpf {
 	struct pci_dev		*pdev;
 	u8			rev_id;
-#define NIC_NODE_ID_MASK	0x300000000000
-#define NIC_NODE_ID(x)		((x & NODE_ID_MASK) >> 44)
 	u8			node;
 	unsigned int		flags;
 	u8			num_vf_en;      /* No of VF enabled */
@@ -494,7 +492,6 @@ static void nic_handle_mbx_intr(struct nicpf *nic, int vf)
 	u64 *mbx_data;
 	u64 mbx_addr;
 	u64 reg_addr;
-	u64 mac_addr;
 	int bgx, lmac;
 	int i;
 	int ret = 0;
@@ -557,12 +554,7 @@ static void nic_handle_mbx_intr(struct nicpf *nic, int vf)
 		lmac = mbx.mac.vf_id;
 		bgx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lmac]);
 		lmac = NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lmac]);
-#ifdef __BIG_ENDIAN
-		mac_addr = cpu_to_be64(mbx.nic_cfg.mac_addr) << 16;
-#else
-		mac_addr = cpu_to_be64(mbx.nic_cfg.mac_addr) >> 16;
-#endif
-		bgx_set_lmac_mac(nic->node, bgx, lmac, (u8 *)&mac_addr);
+		bgx_set_lmac_mac(nic->node, bgx, lmac, mbx.mac.mac_addr);
 		break;
 	case NIC_MBOX_MSG_SET_MAX_FRS:
 		ret = nic_update_hw_frs(nic, mbx.frs.max_frs,
@@ -851,7 +843,7 @@ static int nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	pci_read_config_byte(pdev, PCI_REVISION_ID, &nic->rev_id);
 
-	nic->node = NIC_NODE_ID(pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM));
+	nic->node = nic_get_node_id(pdev);
 
 	nic_set_lmac_vf_mapping(nic);
 

drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c

@@ -504,8 +504,7 @@ static int nicvf_set_rxfh(struct net_device *dev, const u32 *indir,
 	}
 
 	/* We do not allow change in unsupported parameters */
-	if (hkey ||
-	    (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
 		return -EOPNOTSUPP;
 
 	rss->enable = true;

drivers/net/ethernet/cavium/thunder/nicvf_main.c

@@ -50,10 +50,6 @@ module_param(cpi_alg, int, S_IRUGO);
 MODULE_PARM_DESC(cpi_alg,
 		 "PFC algorithm (0=none, 1=VLAN, 2=VLAN16, 3=IP Diffserv)");
 
-static int nicvf_enable_msix(struct nicvf *nic);
-static netdev_tx_t nicvf_xmit(struct sk_buff *skb, struct net_device *netdev);
-static void nicvf_read_bgx_stats(struct nicvf *nic, struct bgx_stats_msg *bgx);
-
 static inline void nicvf_set_rx_frame_cnt(struct nicvf *nic,
 					  struct sk_buff *skb)
 {
@@ -110,17 +106,23 @@ u64 nicvf_queue_reg_read(struct nicvf *nic, u64 offset, u64 qidx)
 
 /* VF -> PF mailbox communication */
 
+static void nicvf_write_to_mbx(struct nicvf *nic, union nic_mbx *mbx)
+{
+	u64 *msg = (u64 *)mbx;
+
+	nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 0, msg[0]);
+	nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 8, msg[1]);
+}
+
 int nicvf_send_msg_to_pf(struct nicvf *nic, union nic_mbx *mbx)
 {
 	int timeout = NIC_MBOX_MSG_TIMEOUT;
 	int sleep = 10;
-	u64 *msg = (u64 *)mbx;
 
 	nic->pf_acked = false;
 	nic->pf_nacked = false;
 
-	nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 0, msg[0]);
-	nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 8, msg[1]);
+	nicvf_write_to_mbx(nic, mbx);
 
 	/* Wait for previous message to be acked, timeout 2sec */
 	while (!nic->pf_acked) {
@@ -146,12 +148,13 @@ int nicvf_send_msg_to_pf(struct nicvf *nic, union nic_mbx *mbx)
 static int nicvf_check_pf_ready(struct nicvf *nic)
 {
 	int timeout = 5000, sleep = 20;
+	union nic_mbx mbx = {};
+
+	mbx.msg.msg = NIC_MBOX_MSG_READY;
 
 	nic->pf_ready_to_rcv_msg = false;
 
-	nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 0,
-			le64_to_cpu(NIC_MBOX_MSG_READY));
-	nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 8, 1ULL);
+	nicvf_write_to_mbx(nic, &mbx);
 
 	while (!nic->pf_ready_to_rcv_msg) {
 		msleep(sleep);
@@ -167,6 +170,14 @@ static int nicvf_check_pf_ready(struct nicvf *nic)
 	return 1;
 }
 
+static void nicvf_read_bgx_stats(struct nicvf *nic, struct bgx_stats_msg *bgx)
+{
+	if (bgx->rx)
+		nic->bgx_stats.rx_stats[bgx->idx] = bgx->stats;
+	else
+		nic->bgx_stats.tx_stats[bgx->idx] = bgx->stats;
+}
+
 static void  nicvf_handle_mbx_intr(struct nicvf *nic)
 {
 	union nic_mbx mbx = {};
@@ -190,8 +201,7 @@ static void  nicvf_handle_mbx_intr(struct nicvf *nic)
 		nic->vf_id = mbx.nic_cfg.vf_id & 0x7F;
 		nic->tns_mode = mbx.nic_cfg.tns_mode & 0x7F;
 		nic->node = mbx.nic_cfg.node_id;
-		ether_addr_copy(nic->netdev->dev_addr,
-				(u8 *)&mbx.nic_cfg.mac_addr);
+		ether_addr_copy(nic->netdev->dev_addr, mbx.nic_cfg.mac_addr);
 		nic->link_up = false;
 		nic->duplex = 0;
 		nic->speed = 0;
@@ -241,18 +251,15 @@ static void  nicvf_handle_mbx_intr(struct nicvf *nic)
 static int nicvf_hw_set_mac_addr(struct nicvf *nic, struct net_device *netdev)
 {
 	union nic_mbx mbx = {};
-	int i;
 
 	mbx.mac.msg = NIC_MBOX_MSG_SET_MAC;
 	mbx.mac.vf_id = nic->vf_id;
-	for (i = 0; i < ETH_ALEN; i++)
-		mbx.mac.addr = (mbx.mac.addr << 8) |
-				     netdev->dev_addr[i];
+	ether_addr_copy(mbx.mac.mac_addr, netdev->dev_addr);
 
 	return nicvf_send_msg_to_pf(nic, &mbx);
 }
 
-void nicvf_config_cpi(struct nicvf *nic)
+static void nicvf_config_cpi(struct nicvf *nic)
 {
 	union nic_mbx mbx = {};
 
@@ -264,7 +271,7 @@ void nicvf_config_cpi(struct nicvf *nic)
 	nicvf_send_msg_to_pf(nic, &mbx);
 }
 
-void nicvf_get_rss_size(struct nicvf *nic)
+static void nicvf_get_rss_size(struct nicvf *nic)
 {
 	union nic_mbx mbx = {};
 
@@ -326,11 +333,11 @@ static int nicvf_rss_init(struct nicvf *nic)
 	rss->enable = true;
 
 	/* Using the HW reset value for now */
-	rss->key[0] = 0xFEED0BADFEED0BAD;
-	rss->key[1] = 0xFEED0BADFEED0BAD;
-	rss->key[2] = 0xFEED0BADFEED0BAD;
-	rss->key[3] = 0xFEED0BADFEED0BAD;
-	rss->key[4] = 0xFEED0BADFEED0BAD;
+	rss->key[0] = 0xFEED0BADFEED0BADULL;
+	rss->key[1] = 0xFEED0BADFEED0BADULL;
+	rss->key[2] = 0xFEED0BADFEED0BADULL;
+	rss->key[3] = 0xFEED0BADFEED0BADULL;
+	rss->key[4] = 0xFEED0BADFEED0BADULL;
 
 	nicvf_set_rss_key(nic);
 
@@ -368,7 +375,9 @@ int nicvf_set_real_num_queues(struct net_device *netdev,
 static int nicvf_init_resources(struct nicvf *nic)
 {
 	int err;
-	u64 mbx_addr = NIC_VF_PF_MAILBOX_0_1;
+	union nic_mbx mbx = {};
+
+	mbx.msg.msg = NIC_MBOX_MSG_CFG_DONE;
 
 	/* Enable Qset */
 	nicvf_qset_config(nic, true);
@@ -382,9 +391,7 @@ static int nicvf_init_resources(struct nicvf *nic)
 	}
 
 	/* Send VF config done msg to PF */
-	nicvf_reg_write(nic, mbx_addr, le64_to_cpu(NIC_MBOX_MSG_CFG_DONE));
-	mbx_addr += (NIC_PF_VF_MAILBOX_SIZE - 1) * 8;
-	nicvf_reg_write(nic, mbx_addr, 1ULL);
+	nicvf_write_to_mbx(nic, &mbx);
 
 	return 0;
 }
@@ -572,7 +579,7 @@ static int nicvf_poll(struct napi_struct *napi, int budget)
  *
  * As of now only CQ errors are handled
  */
-void nicvf_handle_qs_err(unsigned long data)
+static void nicvf_handle_qs_err(unsigned long data)
 {
 	struct nicvf *nic = (struct nicvf *)data;
 	struct queue_set *qs = nic->qs;
@@ -1040,14 +1047,6 @@ static int nicvf_set_mac_address(struct net_device *netdev, void *p)
 	return 0;
 }
 
-static void nicvf_read_bgx_stats(struct nicvf *nic, struct bgx_stats_msg *bgx)
-{
-	if (bgx->rx)
-		nic->bgx_stats.rx_stats[bgx->idx] = bgx->stats;
-	else
-		nic->bgx_stats.tx_stats[bgx->idx] = bgx->stats;
-}
-
 void nicvf_update_lmac_stats(struct nicvf *nic)
 {
 	int stat = 0;
@@ -1138,7 +1137,7 @@ void nicvf_update_stats(struct nicvf *nic)
 		nicvf_update_sq_stats(nic, qidx);
 }
 
-struct rtnl_link_stats64 *nicvf_get_stats64(struct net_device *netdev,
+static struct rtnl_link_stats64 *nicvf_get_stats64(struct net_device *netdev,
 					    struct rtnl_link_stats64 *stats)
 {
 	struct nicvf *nic = netdev_priv(netdev);

drivers/net/ethernet/cavium/thunder/nicvf_queues.c

@@ -62,8 +62,7 @@ static int nicvf_alloc_q_desc_mem(struct nicvf *nic, struct q_desc_mem *dmem,
 
 	/* Align memory address for 'align_bytes' */
 	dmem->phys_base = NICVF_ALIGNED_ADDR((u64)dmem->dma, align_bytes);
-	dmem->base = (void *)((u8 *)dmem->unalign_base +
-			      (dmem->phys_base - dmem->dma));
+	dmem->base = dmem->unalign_base + (dmem->phys_base - dmem->dma);
 	return 0;
 }
 
@@ -228,7 +227,7 @@ static void nicvf_free_rbdr(struct nicvf *nic, struct rbdr *rbdr)
 
 /* Refill receive buffer descriptors with new buffers.
  */
-void nicvf_refill_rbdr(struct nicvf *nic, gfp_t gfp)
+static void nicvf_refill_rbdr(struct nicvf *nic, gfp_t gfp)
 {
 	struct queue_set *qs = nic->qs;
 	int rbdr_idx = qs->rbdr_cnt;
@@ -357,7 +356,9 @@ static int nicvf_init_snd_queue(struct nicvf *nic,
 		return err;
 
 	sq->desc = sq->dmem.base;
-	sq->skbuff = kcalloc(q_len, sizeof(u64), GFP_ATOMIC);
+	sq->skbuff = kcalloc(q_len, sizeof(u64), GFP_KERNEL);
+	if (!sq->skbuff)
+		return -ENOMEM;
 	sq->head = 0;
 	sq->tail = 0;
 	atomic_set(&sq->free_cnt, q_len - 1);

drivers/net/ethernet/cavium/thunder/thunder_bgx.c

@@ -38,7 +38,7 @@ struct lmac {
 	bool			is_sgmii;
 	struct delayed_work	dwork;
 	struct workqueue_struct *check_link;
-} lmac;
+};
 
 struct bgx {
 	u8			bgx_id;
@@ -50,9 +50,9 @@ struct bgx {
 	int			use_training;
 	void __iomem		*reg_base;
 	struct pci_dev		*pdev;
-} bgx;
+};
 
-struct bgx *bgx_vnic[MAX_BGX_THUNDER];
+static struct bgx *bgx_vnic[MAX_BGX_THUNDER];
 static int lmac_count; /* Total no of LMACs in system */
 
 static int bgx_xaui_check_link(struct lmac *lmac);
@@ -163,7 +163,7 @@ void bgx_get_lmac_link_state(int node, int bgx_idx, int lmacid, void *status)
 }
 EXPORT_SYMBOL(bgx_get_lmac_link_state);
 
-const char *bgx_get_lmac_mac(int node, int bgx_idx, int lmacid)
+const u8 *bgx_get_lmac_mac(int node, int bgx_idx, int lmacid)
 {
 	struct bgx *bgx = bgx_vnic[(node * MAX_BGX_PER_CN88XX) + bgx_idx];
 
@@ -174,7 +174,7 @@ const char *bgx_get_lmac_mac(int node, int bgx_idx, int lmacid)
 }
 EXPORT_SYMBOL(bgx_get_lmac_mac);
 
-void bgx_set_lmac_mac(int node, int bgx_idx, int lmacid, const char *mac)
+void bgx_set_lmac_mac(int node, int bgx_idx, int lmacid, const u8 *mac)
 {
 	struct bgx *bgx = bgx_vnic[(node * MAX_BGX_PER_CN88XX) + bgx_idx];
 
@@ -253,7 +253,7 @@ static void bgx_sgmii_change_link_state(struct lmac *lmac)
 	bgx_reg_write(bgx, lmac->lmacid, BGX_CMRX_CFG, cmr_cfg);
 }
 
-void bgx_lmac_handler(struct net_device *netdev)
+static void bgx_lmac_handler(struct net_device *netdev)
 {
 	struct lmac *lmac = container_of(netdev, struct lmac, netdev);
 	struct phy_device *phydev = lmac->phydev;
@@ -655,7 +655,7 @@ static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid)
 	return 0;
 }
 
-void bgx_lmac_disable(struct bgx *bgx, u8 lmacid)
+static void bgx_lmac_disable(struct bgx *bgx, u8 lmacid)
 {
 	struct lmac *lmac;
 	u64 cmrx_cfg;
@@ -894,8 +894,8 @@ static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto err_release_regions;
 	}
 	bgx->bgx_id = (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24) & 1;
-	bgx->bgx_id += NODE_ID(pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM))
-							* MAX_BGX_PER_CN88XX;
+	bgx->bgx_id += nic_get_node_id(pdev) * MAX_BGX_PER_CN88XX;
+
 	bgx_vnic[bgx->bgx_id] = bgx;
 	bgx_get_qlm_mode(bgx);
 

drivers/net/ethernet/cavium/thunder/thunder_bgx.h

@@ -20,9 +20,6 @@
 
 #define    MAX_LMAC	(MAX_BGX_PER_CN88XX * MAX_LMAC_PER_BGX)
 
-#define    NODE_ID_MASK				0x300000000000
-#define    NODE_ID(x)				((x & NODE_ID_MASK) >> 44)
-
 /* Registers */
 #define BGX_CMRX_CFG			0x00
 #define  CMR_PKT_TX_EN				BIT_ULL(13)
@@ -186,8 +183,8 @@ enum MCAST_MODE {
 void bgx_add_dmac_addr(u64 dmac, int node, int bgx_idx, int lmac);
 unsigned bgx_get_map(int node);
 int bgx_get_lmac_count(int node, int bgx);
-const char *bgx_get_lmac_mac(int node, int bgx_idx, int lmacid);
-void bgx_set_lmac_mac(int node, int bgx_idx, int lmacid, const char *mac);
+const u8 *bgx_get_lmac_mac(int node, int bgx_idx, int lmacid);
+void bgx_set_lmac_mac(int node, int bgx_idx, int lmacid, const u8 *mac);
 void bgx_get_lmac_link_state(int node, int bgx_idx, int lmacid, void *status);
 u64 bgx_get_rx_stats(int node, int bgx_idx, int lmac, int idx);
 u64 bgx_get_tx_stats(int node, int bgx_idx, int lmac, int idx);