net/ionic: allow separate L3 and L4 checksum offload

[ upstream commit f603eeb ]

DTS, at least, expects to be able to specify L4 checksum offload
without L3 csum offload. Split up the flag checks.

Fixes: a27d901 ("net/ionic: add Rx and Tx handling")

Signed-off-by: Andrew Boyer <aboyer@pensando.io>

drivers/net/ionic/ionic_rxtx.c

@@ -448,18 +448,22 @@ ionic_tx(struct ionic_queue *q, struct rte_mbuf *txm,
 	uint8_t flags = 0;
 
 	if ((ol_flags & PKT_TX_IP_CKSUM) &&
-			(offloads & DEV_TX_OFFLOAD_IPV4_CKSUM)) {
+	    (offloads & DEV_TX_OFFLOAD_IPV4_CKSUM)) {
 		opcode = IONIC_TXQ_DESC_OPCODE_CSUM_HW;
 		flags |= IONIC_TXQ_DESC_FLAG_CSUM_L3;
-		if (((ol_flags & PKT_TX_TCP_CKSUM) &&
-				(offloads & DEV_TX_OFFLOAD_TCP_CKSUM)) ||
-				((ol_flags & PKT_TX_UDP_CKSUM) &&
-				(offloads & DEV_TX_OFFLOAD_UDP_CKSUM)))
-			flags |= IONIC_TXQ_DESC_FLAG_CSUM_L4;
-	} else {
-		stats->no_csum++;
 	}
 
+	if (((ol_flags & PKT_TX_TCP_CKSUM) &&
+	     (offloads & DEV_TX_OFFLOAD_TCP_CKSUM)) ||
+	    ((ol_flags & PKT_TX_UDP_CKSUM) &&
+	     (offloads & DEV_TX_OFFLOAD_UDP_CKSUM))) {
+		opcode = IONIC_TXQ_DESC_OPCODE_CSUM_HW;
+		flags |= IONIC_TXQ_DESC_FLAG_CSUM_L4;
+	}
+
+	if (opcode == IONIC_TXQ_DESC_OPCODE_CSUM_NONE)
+		stats->no_csum++;
+
 	has_vlan = (ol_flags & PKT_TX_VLAN_PKT);
 	encap = ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
 			(ol_flags & PKT_TX_OUTER_UDP_CKSUM)) &&