i40e: don't use arrays for (src|dst)_ip

The code originally included src_ip and dst_ip with enough space to
support ipv6 filters. However, no actual support for ipv6 filters has
been implemented. Thus, remove the arrays and just use __be32 values.
Should ipv6 support be added in the future, we can replace these with
a union that has sizes for both values.

Change-Id: I1bc04032244a80eb6ebc8a4e6c723a4a665c1dd5
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e.h

@@ -208,8 +208,8 @@ struct i40e_fdir_filter {
 	u8 flow_type;
 	u8 ip4_proto;
 	/* TX packet view of src and dst */
-	__be32 dst_ip[4];
-	__be32 src_ip[4];
+	__be32 dst_ip;
+	__be32 src_ip;
 	__be16 src_port;
 	__be16 dst_port;
 	__be32 sctp_v_tag;

drivers/net/ethernet/intel/i40e/i40e_ethtool.c

@@ -2406,8 +2406,8 @@ static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
 	 */
 	fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
 	fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
-	fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip[0];
-	fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip[0];
+	fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
+	fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
 
 	if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
 		fsp->ring_cookie = RX_CLS_FLOW_DISC;
@@ -2630,8 +2630,8 @@ static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
 static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule,
 				      struct i40e_fdir_filter *input)
 {
-	if ((rule->dst_ip[0] != input->dst_ip[0]) ||
-	    (rule->src_ip[0] != input->src_ip[0]) ||
+	if ((rule->dst_ip != input->dst_ip) ||
+	    (rule->src_ip != input->src_ip) ||
 	    (rule->dst_port != input->dst_port) ||
 	    (rule->src_port != input->src_port))
 		return false;
@@ -2807,8 +2807,8 @@ static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
 	 */
 	input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
 	input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
-	input->dst_ip[0] = fsp->h_u.tcp_ip4_spec.ip4src;
-	input->src_ip[0] = fsp->h_u.tcp_ip4_spec.ip4dst;
+	input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
+	input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
 
 	if (ntohl(fsp->m_ext.data[1])) {
 		vf_id = ntohl(fsp->h_ext.data[1]);

drivers/net/ethernet/intel/i40e/i40e_txrx.c

@@ -219,9 +219,9 @@ static int i40e_add_del_fdir_udpv4(struct i40e_vsi *vsi,
 	udp = (struct udphdr *)(raw_packet + IP_HEADER_OFFSET
 	      + sizeof(struct iphdr));
 
-	ip->daddr = fd_data->dst_ip[0];
+	ip->daddr = fd_data->dst_ip;
 	udp->dest = fd_data->dst_port;
-	ip->saddr = fd_data->src_ip[0];
+	ip->saddr = fd_data->src_ip;
 	udp->source = fd_data->src_port;
 
 	fd_data->pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
@@ -281,9 +281,9 @@ static int i40e_add_del_fdir_tcpv4(struct i40e_vsi *vsi,
 	tcp = (struct tcphdr *)(raw_packet + IP_HEADER_OFFSET
 	      + sizeof(struct iphdr));
 
-	ip->daddr = fd_data->dst_ip[0];
+	ip->daddr = fd_data->dst_ip;
 	tcp->dest = fd_data->dst_port;
-	ip->saddr = fd_data->src_ip[0];
+	ip->saddr = fd_data->src_ip;
 	tcp->source = fd_data->src_port;
 
 	if (add) {
@@ -359,8 +359,8 @@ static int i40e_add_del_fdir_ipv4(struct i40e_vsi *vsi,
 		memcpy(raw_packet, packet, I40E_IP_DUMMY_PACKET_LEN);
 		ip = (struct iphdr *)(raw_packet + IP_HEADER_OFFSET);
 
-		ip->saddr = fd_data->src_ip[0];
-		ip->daddr = fd_data->dst_ip[0];
+		ip->saddr = fd_data->src_ip;
+		ip->daddr = fd_data->dst_ip;
 		ip->protocol = 0;
 
 		fd_data->pctype = i;