[PATCH v3 net 4/5] net:ethernet:aquantia: Fix for LSO with IPv6.

[Pavel Belous]

From: Pavel Belous <pavel.bel...@aquantia.com>

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.bel...@aquantia.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_nic.c           | 3 +++
 drivers/net/ethernet/aquantia/atlantic/aq_ring.h          | 3 ++-
 drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c | 3 +++
 drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 3 +++
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c 
b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
index db2b51d..cdb0299 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/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;
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h 
b/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
index 2572546..eecd6d1 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
+++ b/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;
                };
        };
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c 
b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
index a2b746a..a536875 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
+++ b/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;
 
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c 
b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
index cab2931..69488c9 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
+++ b/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;
 
-- 
2.7.4