liquidio: New driver FW command structure

This patch is for new driver/firmware control command structure
(octnic_packet_params and octnic_cmd_setup ) and resultant code changes.
Signed-off-by: NDerek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: NSatanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: NFelix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: NRaghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/cavium/liquidio/lio_main.c

@@ -2704,68 +2704,6 @@ static inline int send_nic_timestamp_pkt(struct octeon_device *oct,
 	return retval;
 }
 
-static inline int is_ipv4(struct sk_buff *skb)
-{
-	return (skb->protocol == htons(ETH_P_IP)) &&
-	       (ip_hdr(skb)->version == 4);
-}
-
-static inline int is_vlan(struct sk_buff *skb)
-{
-	return skb->protocol == htons(ETH_P_8021Q);
-}
-
-static inline int is_ip_fragmented(struct sk_buff *skb)
-{
-	/* The Don't fragment and Reserved flag fields are ignored.
-	 * IP is fragmented if
-	 * -  the More fragments bit is set (indicating this IP is a fragment
-	 * with more to follow; the current offset could be 0 ).
-	 * -  ths offset field is non-zero.
-	 */
-	return (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) ? 1 : 0;
-}
-
-static inline int is_ipv6(struct sk_buff *skb)
-{
-	return (skb->protocol == htons(ETH_P_IPV6)) &&
-	       (ipv6_hdr(skb)->version == 6);
-}
-
-static inline int is_with_extn_hdr(struct sk_buff *skb)
-{
-	return (ipv6_hdr(skb)->nexthdr != IPPROTO_TCP) &&
-	       (ipv6_hdr(skb)->nexthdr != IPPROTO_UDP);
-}
-
-static inline int is_tcpudp(struct sk_buff *skb)
-{
-	return (ip_hdr(skb)->protocol == IPPROTO_TCP) ||
-	       (ip_hdr(skb)->protocol == IPPROTO_UDP);
-}
-
-static inline u32 get_ipv4_5tuple_tag(struct sk_buff *skb)
-{
-	u32 tag;
-	struct iphdr *iphdr = ip_hdr(skb);
-
-	tag = crc32(0, &iphdr->protocol, 1);
-	tag = crc32(tag, (u8 *)&iphdr->saddr, 8);
-	tag = crc32(tag, skb_transport_header(skb), 4);
-	return tag;
-}
-
-static inline u32 get_ipv6_5tuple_tag(struct sk_buff *skb)
-{
-	u32 tag;
-	struct ipv6hdr *ipv6hdr = ipv6_hdr(skb);
-
-	tag = crc32(0, &ipv6hdr->nexthdr, 1);
-	tag = crc32(tag, (u8 *)&ipv6hdr->saddr, 32);
-	tag = crc32(tag, skb_transport_header(skb), 4);
-	return tag;
-}
-
 /** \brief Transmit networks packets to the Octeon interface
  * @param skbuff   skbuff struct to be passed to network layer.
  * @param netdev    pointer to network device
@@ -2852,52 +2790,11 @@ static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
 
 	cmdsetup.u64 = 0;
 	cmdsetup.s.ifidx = lio->linfo.ifidx;
+	cmdsetup.s.iq_no = iq_no;
 
-	if (skb->ip_summed == CHECKSUM_PARTIAL) {
-		if (is_ipv4(skb) && !is_ip_fragmented(skb) && is_tcpudp(skb)) {
-			tag = get_ipv4_5tuple_tag(skb);
-
-			cmdsetup.s.cksum_offset = sizeof(struct ethhdr) + 1;
-
-			if (ip_hdr(skb)->ihl > 5)
-				cmdsetup.s.ipv4opts_ipv6exthdr =
-						OCT_PKT_PARAM_IPV4OPTS;
-
-		} else if (is_ipv6(skb)) {
-			tag = get_ipv6_5tuple_tag(skb);
+	if (skb->ip_summed == CHECKSUM_PARTIAL)
+		cmdsetup.s.transport_csum = 1;
 
-			cmdsetup.s.cksum_offset = sizeof(struct ethhdr) + 1;
-
-			if (is_with_extn_hdr(skb))
-				cmdsetup.s.ipv4opts_ipv6exthdr =
-						OCT_PKT_PARAM_IPV6EXTHDR;
-
-		} else if (is_vlan(skb)) {
-			if (vlan_eth_hdr(skb)->h_vlan_encapsulated_proto
-				== htons(ETH_P_IP) &&
-				!is_ip_fragmented(skb) && is_tcpudp(skb)) {
-				tag = get_ipv4_5tuple_tag(skb);
-
-				cmdsetup.s.cksum_offset =
-					sizeof(struct vlan_ethhdr) + 1;
-
-				if (ip_hdr(skb)->ihl > 5)
-					cmdsetup.s.ipv4opts_ipv6exthdr =
-						OCT_PKT_PARAM_IPV4OPTS;
-
-			} else if (vlan_eth_hdr(skb)->h_vlan_encapsulated_proto
-				== htons(ETH_P_IPV6)) {
-				tag = get_ipv6_5tuple_tag(skb);
-
-				cmdsetup.s.cksum_offset =
-					sizeof(struct vlan_ethhdr) + 1;
-
-				if (is_with_extn_hdr(skb))
-					cmdsetup.s.ipv4opts_ipv6exthdr =
-						OCT_PKT_PARAM_IPV6EXTHDR;
-			}
-		}
-	}
 	if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
 		skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
 		cmdsetup.s.timestamp = 1;

drivers/net/ethernet/cavium/liquidio/liquidio_common.h

@@ -463,30 +463,27 @@ union octeon_rh {
 
 #define  OCT_RH_SIZE   (sizeof(union  octeon_rh))
 
-#define OCT_PKT_PARAM_IPV4OPTS   1
-#define OCT_PKT_PARAM_IPV6EXTHDR 2
-
 union octnic_packet_params {
 	u32 u32;
 	struct {
 #ifdef __BIG_ENDIAN_BITFIELD
-		u32 reserved:6;
+		u32 reserved:16;
+		u32 ip_csum:1;		/* Perform IP header checksum(s) */
+		/* Perform Outer transport header checksum */
+		u32 transport_csum:1;
+		/* Find tunnel, and perform transport csum. */
 		u32 tnl_csum:1;
-		u32 ip_csum:1;
-		u32 ipv4opts_ipv6exthdr:2;
-		u32 ipsec_ops:4;
-		u32 tsflag:1;
-		u32 csoffset:9;
+		u32 tsflag:1;		/* Timestamp this packet */
+		u32 ipsec_ops:4;	/* IPsec operation */
 		u32 ifidx:8;
 #else
 		u32 ifidx:8;
-		u32 csoffset:9;
-		u32 tsflag:1;
 		u32 ipsec_ops:4;
-		u32 ipv4opts_ipv6exthdr:2;
-		u32 ip_csum:1;
+		u32 tsflag:1;
 		u32 tnl_csum:1;
-		u32 reserved:6;
+		u32 transport_csum:1;
+		u32 ip_csum:1;
+		u32 reserved:16;
 #endif
 	} s;
 };

drivers/net/ethernet/cavium/liquidio/octeon_nic.h

@@ -94,15 +94,15 @@ struct octnic_data_pkt {
  */
 union octnic_cmd_setup {
 	struct {
-		u32 ifidx:8;
-		u32 cksum_offset:7;
+		u32 iq_no:8;
 		u32 gather:1;
 		u32 timestamp:1;
-		u32 ipv4opts_ipv6exthdr:2;
 		u32 ip_csum:1;
+		u32 transport_csum:1;
 		u32 tnl_csum:1;
-
+		u32 ifidx:8;
 		u32 rsvd:11;
+
 		union {
 			u32 datasize;
 			u32 gatherptrs;
@@ -172,13 +172,8 @@ octnet_prepare_pci_cmd(struct octeon_instr_64B *cmd,
 
 	packet_params.u32 = 0;
 
-	if (setup->s.cksum_offset) {
-		packet_params.s.csoffset = setup->s.cksum_offset;
-		packet_params.s.ipv4opts_ipv6exthdr =
-						setup->s.ipv4opts_ipv6exthdr;
-	}
-
 	packet_params.s.ip_csum = setup->s.ip_csum;
+	packet_params.s.transport_csum = setup->s.transport_csum;
 	packet_params.s.tnl_csum = setup->s.tnl_csum;
 	packet_params.s.ifidx = setup->s.ifidx;
 	packet_params.s.tsflag = setup->s.timestamp;