net:ethernet:aquantia: Fix for LSO with IPv6.

Fix Context Command bit: L3 type = "0" for IPv4, "1" for IPv6.

Fixes: bab6de8fd180 ("net: ethernet: aquantia:
 Atlantic A0 and B0 specific functions.")

Signed-off-by: Pavel Belous <pavel.belous@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

@@ -487,6 +487,9 @@ static unsigned int aq_nic_map_skb(struct aq_nic_s *self,
 		dx_buff->mss = skb_shinfo(skb)->gso_size;
 		dx_buff->is_txc = 1U;
 
+		dx_buff->is_ipv6 =
+			(ip_hdr(skb)->version == 6) ? 1U : 0U;
+
 		dx = aq_ring_next_dx(ring, dx);
 		dx_buff = &ring->buff_ring[dx];
 		++ret;

drivers/net/ethernet/aquantia/atlantic/aq_ring.h

@@ -58,7 +58,8 @@ struct __packed aq_ring_buff_s {
 			u8 len_l2;
 			u8 len_l3;
 			u8 len_l4;
-			u8 rsvd2;
+			u8 is_ipv6:1;
+			u8 rsvd2:7;
 			u32 len_pkt;
 		};
 	};

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c

@@ -433,6 +433,9 @@ static int hw_atl_a0_hw_ring_tx_xmit(struct aq_hw_s *self,
 				    buff->len_l3 +
 				    buff->len_l2);
 			is_gso = true;
+
+			if (buff->is_ipv6)
+				txd->ctl |= HW_ATL_A0_TXD_CTL_CMD_IPV6;
 		} else {
 			buff_pa_len = buff->len;
 

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c

@@ -471,6 +471,9 @@ static int hw_atl_b0_hw_ring_tx_xmit(struct aq_hw_s *self,
 				    buff->len_l3 +
 				    buff->len_l2);
 			is_gso = true;
+
+			if (buff->is_ipv6)
+				txd->ctl |= HW_ATL_B0_TXD_CTL_CMD_IPV6;
 		} else {
 			buff_pa_len = buff->len;