[next-queue,1/1] ixgbe: cleanup sparse warnings

Message ID 1523644117-5126-1-git-send-email-cathy.zhou@oracle.com
State Accepted
Delegated to: Jeff Kirsher
Headers show
Series
  • [next-queue,1/1] ixgbe: cleanup sparse warnings
Related show

Commit Message

cathy.zhou@oracle.com April 13, 2018, 6:28 p.m.
From: Cathy Zhou <cathy.zhou@oracle.COM>

Sparse complains valid conversions between restricted types, force
attribute is used to avoid those warnings.

Signed-off-by: Cathy Zhou <cathy.zhou@oracle.COM>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c  | 13 ++++++-----
 drivers/net/ethernet/intel/ixgbe/ixgbe_common.c |  2 +-
 drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c   |  2 +-
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c  | 25 +++++++++++++--------
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c   | 29 +++++++++++++++----------
 drivers/net/ethernet/intel/ixgbe/ixgbe_model.h  | 16 +++++++-------
 drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c   |  9 ++++----
 7 files changed, 55 insertions(+), 41 deletions(-)

Comments

Bowers, AndrewX April 18, 2018, 6:31 p.m. | #1
> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces@osuosl.org] On
> Behalf Of cathy.zhou@oracle.com
> Sent: Friday, April 13, 2018 11:29 AM
> To: Kirsher, Jeffrey T <jeffrey.t.kirsher@intel.com>; intel-wired-
> lan@lists.osuosl.org
> Cc: netdev@vger.kernel.org
> Subject: [Intel-wired-lan] [next-queue PATCH 1/1] ixgbe: cleanup sparse
> warnings
> 
> From: Cathy Zhou <cathy.zhou@oracle.COM>
> 
> Sparse complains valid conversions between restricted types, force attribute
> is used to avoid those warnings.
> 
> Signed-off-by: Cathy Zhou <cathy.zhou@oracle.COM>
> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
> ---
>  drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c  | 13 ++++++-----
> drivers/net/ethernet/intel/ixgbe/ixgbe_common.c |  2 +-
>  drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c   |  2 +-
>  drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c  | 25 +++++++++++++--------
>  drivers/net/ethernet/intel/ixgbe/ixgbe_main.c   | 29 +++++++++++++++----
> ------
>  drivers/net/ethernet/intel/ixgbe/ixgbe_model.h  | 16 +++++++-------
>  drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c   |  9 ++++----
>  7 files changed, 55 insertions(+), 41 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers@intel.com>

Patch

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
index 66a74f4651e8..898b47b1a854 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
@@ -1462,7 +1462,8 @@  void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
 {
 
 	u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
-	u32 bucket_hash = 0, hi_dword = 0;
+	u32 bucket_hash = 0;
+	__be32 hi_dword = 0;
 	int i;
 
 	/* Apply masks to input data */
@@ -1501,7 +1502,7 @@  void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
 	 * Limit hash to 13 bits since max bucket count is 8K.
 	 * Store result at the end of the input stream.
 	 */
-	input->formatted.bkt_hash = bucket_hash & 0x1FFF;
+	input->formatted.bkt_hash = (__force __be16)(bucket_hash & 0x1FFF);
 }
 
 /**
@@ -1610,7 +1611,7 @@  s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
 		return IXGBE_ERR_CONFIG;
 	}
 
-	switch (input_mask->formatted.flex_bytes & 0xFFFF) {
+	switch ((__force u16)input_mask->formatted.flex_bytes & 0xFFFF) {
 	case 0x0000:
 		/* Mask Flex Bytes */
 		fdirm |= IXGBE_FDIRM_FLEX;
@@ -1680,13 +1681,13 @@  s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
 	IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, fdirport);
 
 	/* record vlan (little-endian) and flex_bytes(big-endian) */
-	fdirvlan = IXGBE_STORE_AS_BE16(input->formatted.flex_bytes);
+	fdirvlan = IXGBE_STORE_AS_BE16((__force u16)input->formatted.flex_bytes);
 	fdirvlan <<= IXGBE_FDIRVLAN_FLEX_SHIFT;
 	fdirvlan |= ntohs(input->formatted.vlan_id);
 	IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, fdirvlan);
 
 	/* configure FDIRHASH register */
-	fdirhash = input->formatted.bkt_hash;
+	fdirhash = (__force u32)input->formatted.bkt_hash;
 	fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
 	IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
 
@@ -1724,7 +1725,7 @@  s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
 	s32 err;
 
 	/* configure FDIRHASH register */
-	fdirhash = input->formatted.bkt_hash;
+	fdirhash = (__force u32)input->formatted.bkt_hash;
 	fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
 	IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 633be93f3dbb..7db2722366c2 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -3652,7 +3652,7 @@  s32 ixgbe_hic_unlocked(struct ixgbe_hw *hw, u32 *buffer, u32 length,
 	 */
 	for (i = 0; i < dword_len; i++)
 		IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
-				      i, cpu_to_le32(buffer[i]));
+				      i, (__force u32)cpu_to_le32(buffer[i]));
 
 	/* Setting this bit tells the ARC that a new command is pending. */
 	IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
index 7a09a40e4472..4e4c5eeda50d 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
@@ -465,7 +465,7 @@  int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter,
 	case cpu_to_le32(IXGBE_RXDADV_STAT_FCSTAT_FCPRSP):
 		dma_unmap_sg(&adapter->pdev->dev, ddp->sgl,
 			     ddp->sgc, DMA_FROM_DEVICE);
-		ddp->err = ddp_err;
+		ddp->err = (__force u32)ddp_err;
 		ddp->sgl = NULL;
 		ddp->sgc = 0;
 		/* fall through */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
index 68af127987bc..33e8c588ff51 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c
@@ -43,8 +43,9 @@  static void ixgbe_ipsec_set_tx_sa(struct ixgbe_hw *hw, u16 idx,
 	int i;
 
 	for (i = 0; i < 4; i++)
-		IXGBE_WRITE_REG(hw, IXGBE_IPSTXKEY(i), cpu_to_be32(key[3 - i]));
-	IXGBE_WRITE_REG(hw, IXGBE_IPSTXSALT, cpu_to_be32(salt));
+		IXGBE_WRITE_REG(hw, IXGBE_IPSTXKEY(i),
+				(__force u32)cpu_to_be32(key[3 - i]));
+	IXGBE_WRITE_REG(hw, IXGBE_IPSTXSALT, (__force u32)cpu_to_be32(salt));
 	IXGBE_WRITE_FLUSH(hw);
 
 	reg = IXGBE_READ_REG(hw, IXGBE_IPSTXIDX);
@@ -93,7 +94,8 @@  static void ixgbe_ipsec_set_rx_sa(struct ixgbe_hw *hw, u16 idx, __be32 spi,
 	int i;
 
 	/* store the SPI (in bigendian) and IPidx */
-	IXGBE_WRITE_REG(hw, IXGBE_IPSRXSPI, cpu_to_le32(spi));
+	IXGBE_WRITE_REG(hw, IXGBE_IPSRXSPI,
+			(__force u32)cpu_to_le32((__force u32)spi));
 	IXGBE_WRITE_REG(hw, IXGBE_IPSRXIPIDX, ip_idx);
 	IXGBE_WRITE_FLUSH(hw);
 
@@ -101,8 +103,9 @@  static void ixgbe_ipsec_set_rx_sa(struct ixgbe_hw *hw, u16 idx, __be32 spi,
 
 	/* store the key, salt, and mode */
 	for (i = 0; i < 4; i++)
-		IXGBE_WRITE_REG(hw, IXGBE_IPSRXKEY(i), cpu_to_be32(key[3 - i]));
-	IXGBE_WRITE_REG(hw, IXGBE_IPSRXSALT, cpu_to_be32(salt));
+		IXGBE_WRITE_REG(hw, IXGBE_IPSRXKEY(i),
+				(__force u32)cpu_to_be32(key[3 - i]));
+	IXGBE_WRITE_REG(hw, IXGBE_IPSRXSALT, (__force u32)cpu_to_be32(salt));
 	IXGBE_WRITE_REG(hw, IXGBE_IPSRXMOD, mode);
 	IXGBE_WRITE_FLUSH(hw);
 
@@ -121,7 +124,8 @@  static void ixgbe_ipsec_set_rx_ip(struct ixgbe_hw *hw, u16 idx, __be32 addr[])
 
 	/* store the ip address */
 	for (i = 0; i < 4; i++)
-		IXGBE_WRITE_REG(hw, IXGBE_IPSRXIPADDR(i), cpu_to_le32(addr[i]));
+		IXGBE_WRITE_REG(hw, IXGBE_IPSRXIPADDR(i),
+				(__force u32)cpu_to_le32((__force u32)addr[i]));
 	IXGBE_WRITE_FLUSH(hw);
 
 	ixgbe_ipsec_set_rx_item(hw, idx, ips_rx_ip_tbl);
@@ -391,7 +395,8 @@  static struct xfrm_state *ixgbe_ipsec_find_rx_state(struct ixgbe_ipsec *ipsec,
 	struct xfrm_state *ret = NULL;
 
 	rcu_read_lock();
-	hash_for_each_possible_rcu(ipsec->rx_sa_list, rsa, hlist, spi)
+	hash_for_each_possible_rcu(ipsec->rx_sa_list, rsa, hlist,
+				   (__force u32)spi) {
 		if (spi == rsa->xs->id.spi &&
 		    ((ip4 && *daddr == rsa->xs->id.daddr.a4) ||
 		      (!ip4 && !memcmp(daddr, &rsa->xs->id.daddr.a6,
@@ -401,6 +406,7 @@  static struct xfrm_state *ixgbe_ipsec_find_rx_state(struct ixgbe_ipsec *ipsec,
 			xfrm_state_hold(ret);
 			break;
 		}
+	}
 	rcu_read_unlock();
 	return ret;
 }
@@ -593,7 +599,7 @@  static int ixgbe_ipsec_add_sa(struct xfrm_state *xs)
 
 		/* hash the new entry for faster search in Rx path */
 		hash_add_rcu(ipsec->rx_sa_list, &ipsec->rx_tbl[sa_idx].hlist,
-			     rsa.xs->id.spi);
+			     (__force u64)rsa.xs->id.spi);
 	} else {
 		struct tx_sa tsa;
 
@@ -677,7 +683,8 @@  static void ixgbe_ipsec_del_sa(struct xfrm_state *xs)
 			if (!ipsec->ip_tbl[ipi].ref_cnt) {
 				memset(&ipsec->ip_tbl[ipi], 0,
 				       sizeof(struct rx_ip_sa));
-				ixgbe_ipsec_set_rx_ip(hw, ipi, zerobuf);
+				ixgbe_ipsec_set_rx_ip(hw, ipi,
+						      (__force __be32 *)zerobuf);
 			}
 		}
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index afadba99f7b8..ef40b226edfc 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -752,8 +752,8 @@  static void ixgbe_dump(struct ixgbe_adapter *adapter)
 					ring_desc = "";
 				pr_info("T [0x%03X]    %016llX %016llX %016llX %08X %p %016llX %p%s",
 					i,
-					le64_to_cpu(u0->a),
-					le64_to_cpu(u0->b),
+					le64_to_cpu((__force __le64)u0->a),
+					le64_to_cpu((__force __le64)u0->b),
 					(u64)dma_unmap_addr(tx_buffer, dma),
 					dma_unmap_len(tx_buffer, len),
 					tx_buffer->next_to_watch,
@@ -864,15 +864,15 @@  static void ixgbe_dump(struct ixgbe_adapter *adapter)
 				/* Descriptor Done */
 				pr_info("RWB[0x%03X]     %016llX %016llX ---------------- %p%s\n",
 					i,
-					le64_to_cpu(u0->a),
-					le64_to_cpu(u0->b),
+					le64_to_cpu((__force __le64)u0->a),
+					le64_to_cpu((__force __le64)u0->b),
 					rx_buffer_info->skb,
 					ring_desc);
 			} else {
 				pr_info("R  [0x%03X]     %016llX %016llX %016llX %p%s\n",
 					i,
-					le64_to_cpu(u0->a),
-					le64_to_cpu(u0->b),
+					le64_to_cpu((__force __le64)u0->a),
+					le64_to_cpu((__force __le64)u0->b),
 					(u64)rx_buffer_info->dma,
 					rx_buffer_info->skb,
 					ring_desc);
@@ -7801,7 +7801,7 @@  static int ixgbe_tso(struct ixgbe_ring *tx_ring,
 
 	/* remove payload length from inner checksum */
 	paylen = skb->len - l4_offset;
-	csum_replace_by_diff(&l4.tcp->check, htonl(paylen));
+	csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen));
 
 	/* update gso size and bytecount with header size */
 	first->gso_segs = skb_shinfo(skb)->gso_segs;
@@ -9109,7 +9109,8 @@  static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input,
 
 		for (j = 0; field_ptr[j].val; j++) {
 			if (field_ptr[j].off == off) {
-				field_ptr[j].val(input, mask, val, m);
+				field_ptr[j].val(input, mask, (__force u32)val,
+						 (__force u32)m);
 				input->filter.formatted.flow_type |=
 					field_ptr[j].type;
 				found_entry = true;
@@ -9118,8 +9119,10 @@  static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input,
 		}
 		if (nexthdr) {
 			if (nexthdr->off == cls->knode.sel->keys[i].off &&
-			    nexthdr->val == cls->knode.sel->keys[i].val &&
-			    nexthdr->mask == cls->knode.sel->keys[i].mask)
+			    nexthdr->val ==
+			    (__force u32)cls->knode.sel->keys[i].val &&
+			    nexthdr->mask ==
+			    (__force u32)cls->knode.sel->keys[i].mask)
 				found_jump_field = true;
 			else
 				continue;
@@ -9223,7 +9226,8 @@  static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter,
 		for (i = 0; nexthdr[i].jump; i++) {
 			if (nexthdr[i].o != cls->knode.sel->offoff ||
 			    nexthdr[i].s != cls->knode.sel->offshift ||
-			    nexthdr[i].m != cls->knode.sel->offmask)
+			    nexthdr[i].m !=
+			    (__force u32)cls->knode.sel->offmask)
 				return err;
 
 			jump = kzalloc(sizeof(*jump), GFP_KERNEL);
@@ -9970,7 +9974,8 @@  static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog)
 		}
 	} else {
 		for (i = 0; i < adapter->num_rx_queues; i++)
-			xchg(&adapter->rx_ring[i]->xdp_prog, adapter->xdp_prog);
+			(void)xchg(&adapter->rx_ring[i]->xdp_prog,
+			    adapter->xdp_prog);
 	}
 
 	if (old_prog)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_model.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_model.h
index 72446644f9fa..57de21a299ea 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_model.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_model.h
@@ -53,8 +53,8 @@  static inline int ixgbe_mat_prgm_sip(struct ixgbe_fdir_filter *input,
 				     union ixgbe_atr_input *mask,
 				     u32 val, u32 m)
 {
-	input->filter.formatted.src_ip[0] = val;
-	mask->formatted.src_ip[0] = m;
+	input->filter.formatted.src_ip[0] = (__force __be32)val;
+	mask->formatted.src_ip[0] = (__force __be32)m;
 	return 0;
 }
 
@@ -62,8 +62,8 @@  static inline int ixgbe_mat_prgm_dip(struct ixgbe_fdir_filter *input,
 				     union ixgbe_atr_input *mask,
 				     u32 val, u32 m)
 {
-	input->filter.formatted.dst_ip[0] = val;
-	mask->formatted.dst_ip[0] = m;
+	input->filter.formatted.dst_ip[0] = (__force __be32)val;
+	mask->formatted.dst_ip[0] = (__force __be32)m;
 	return 0;
 }
 
@@ -79,10 +79,10 @@  static inline int ixgbe_mat_prgm_ports(struct ixgbe_fdir_filter *input,
 				       union ixgbe_atr_input *mask,
 				       u32 val, u32 m)
 {
-	input->filter.formatted.src_port = val & 0xffff;
-	mask->formatted.src_port = m & 0xffff;
-	input->filter.formatted.dst_port = val >> 16;
-	mask->formatted.dst_port = m >> 16;
+	input->filter.formatted.src_port = (__force __be16)(val & 0xffff);
+	mask->formatted.src_port = (__force __be16)(m & 0xffff);
+	input->filter.formatted.dst_port = (__force __be16)(val >> 16);
+	mask->formatted.dst_port = (__force __be16)(m >> 16);
 
 	return 0;
 };
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
index 3123267dfba9..336f3218177a 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -898,8 +898,9 @@  static s32 ixgbe_read_ee_hostif_buffer_X550(struct ixgbe_hw *hw,
 		buffer.hdr.req.checksum = FW_DEFAULT_CHECKSUM;
 
 		/* convert offset from words to bytes */
-		buffer.address = cpu_to_be32((offset + current_word) * 2);
-		buffer.length = cpu_to_be16(words_to_read * 2);
+		buffer.address = (__force u32)cpu_to_be32((offset +
+							   current_word) * 2);
+		buffer.length = (__force u16)cpu_to_be16(words_to_read * 2);
 		buffer.pad2 = 0;
 		buffer.pad3 = 0;
 
@@ -1109,9 +1110,9 @@  static s32 ixgbe_read_ee_hostif_X550(struct ixgbe_hw *hw, u16 offset, u16 *data)
 	buffer.hdr.req.checksum = FW_DEFAULT_CHECKSUM;
 
 	/* convert offset from words to bytes */
-	buffer.address = cpu_to_be32(offset * 2);
+	buffer.address = (__force u32)cpu_to_be32(offset * 2);
 	/* one word */
-	buffer.length = cpu_to_be16(sizeof(u16));
+	buffer.length = (__force u16)cpu_to_be16(sizeof(u16));
 
 	status = hw->mac.ops.acquire_swfw_sync(hw, mask);
 	if (status)