[PATCH net-next 1/2] udp: add a GSO type for UDPv6

From: Huazhong Tan
Date: Sat Sep 05 2020 - 02:14:12 EST

In some cases, for UDP GSO, UDPv4 and UDPv6 need to be handled
separately, for example, checksum offload, so add new GSO type
SKB_GSO_UDPV6_L4 for UDPv6, and the old SKB_GSO_UDP_L4 stands
for UDPv4.

Signed-off-by: Huazhong Tan <tanhuazhong@xxxxxxxxxx>
---
drivers/net/bonding/bond_main.c | 4 +++-
drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 3 ++-
.../net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 1 +
.../net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c | 1 +
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 2 +-
drivers/net/ethernet/chelsio/cxgb4/sge.c | 17 ++++++++---------
drivers/net/ethernet/intel/i40e/i40e_main.c | 1 +
drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +-
drivers/net/ethernet/intel/ice/ice_main.c | 3 ++-
drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +-
drivers/net/ethernet/intel/igb/igb_main.c | 9 ++++++---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 9 ++++++---
.../net/ethernet/marvell/octeontx2/nic/otx2_common.c | 2 +-
drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 2 +-
drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c | 2 +-
drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c | 2 +-
.../net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h | 2 +-
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 9 ++++++---
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 2 +-
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 11 +++++++----
drivers/net/team/team.c | 5 +++--
include/linux/netdev_features.h | 4 +++-
include/linux/netdevice.h | 1 +
include/linux/skbuff.h | 8 ++++++++
include/linux/udp.h | 4 ++--
net/core/filter.c | 6 ++----
net/core/skbuff.c | 2 +-
net/ethtool/common.c | 1 +
net/ipv6/udp.c | 2 +-
net/ipv6/udp_offload.c | 6 +++---
30 files changed, 77 insertions(+), 48 deletions(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index c5d3032..12b1ced 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1292,6 +1292,7 @@ static void bond_compute_features(struct bonding *bond)
bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX |
+ NETIF_F_GSO_UDPV6_L4 |
NETIF_F_GSO_UDP_L4;
#ifdef CONFIG_XFRM_OFFLOAD
bond_dev->hw_enc_features |= xfrm_features;
@@ -4716,7 +4717,8 @@ void bond_setup(struct net_device *bond_dev)
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER;

- bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
+ bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;
#ifdef CONFIG_XFRM_OFFLOAD
bond_dev->hw_features |= BOND_XFRM_FEATURES;
#endif /* CONFIG_XFRM_OFFLOAD */
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
index c6bdf1d..d8d288e 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -372,7 +372,8 @@ void aq_nic_ndev_init(struct aq_nic_s *self)
self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
NETIF_F_RXHASH | NETIF_F_SG |
NETIF_F_LRO | NETIF_F_TSO | NETIF_F_TSO6;
- self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4;
+ self->ndev->gso_partial_features = NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;
self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;

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 8941ac4d..41522a3 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
@@ -48,6 +48,7 @@
NETIF_F_HW_VLAN_CTAG_RX | \
NETIF_F_HW_VLAN_CTAG_TX | \
NETIF_F_GSO_UDP_L4 | \
+ NETIF_F_GSO_UDPV6_L4 | \
NETIF_F_GSO_PARTIAL | \
NETIF_F_HW_TC, \
.hw_priv_flags = IFF_UNICAST_FLT, \
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
index 92f6404..c96d216 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c
@@ -49,6 +49,7 @@ static int hw_atl2_act_rslvr_table_set(struct aq_hw_s *self, u8 location,
NETIF_F_HW_VLAN_CTAG_RX | \
NETIF_F_HW_VLAN_CTAG_TX | \
NETIF_F_GSO_UDP_L4 | \
+ NETIF_F_GSO_UDPV6_L4 | \
NETIF_F_GSO_PARTIAL | \
NETIF_F_HW_TC, \
.hw_priv_flags = IFF_UNICAST_FLT, \
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index de078a5..45c0cb6 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -6213,7 +6213,7 @@ static void free_some_resources(struct adapter *adapter)
}

#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN | \
- NETIF_F_GSO_UDP_L4)
+ NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_UDPV6_L4)
#define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \
NETIF_F_GRO | NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA)
#define SEGMENT_SIZE 128
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index fddd70e..c96a0af 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -735,7 +735,7 @@ static inline int is_eth_imm(const struct sk_buff *skb, unsigned int chip_ver)
chip_ver > CHELSIO_T5) {
hdrlen = sizeof(struct cpl_tx_tnl_lso);
hdrlen += sizeof(struct cpl_tx_pkt_core);
- } else if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ } else if (skb_is_gso_udp(skb)) {
return 0;
} else {
hdrlen = skb_shinfo(skb)->gso_size ?
@@ -782,7 +782,7 @@ static inline unsigned int calc_tx_flits(const struct sk_buff *skb,
if (skb->encapsulation && chip_ver > CHELSIO_T5) {
hdrlen = sizeof(struct fw_eth_tx_pkt_wr) +
sizeof(struct cpl_tx_tnl_lso);
- } else if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ } else if (skb_is_gso_udp(skb)) {
u32 pkt_hdrlen;

pkt_hdrlen = eth_get_headlen(skb->dev, skb->data,
@@ -1498,14 +1498,15 @@ static netdev_tx_t cxgb4_eth_xmit(struct sk_buff *skb, struct net_device *dev)
eowr = (void *)&q->q.desc[q->q.pidx];
wr->equiq_to_len16 = htonl(wr_mid);
wr->r3 = cpu_to_be64(0);
- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
+ if (skb_is_gso_udp(skb))
end = (u64 *)eowr + flits;
else
end = (u64 *)wr + flits;

len = immediate ? skb->len : 0;
len += sizeof(*cpl);
- if (ssi->gso_size && !(ssi->gso_type & SKB_GSO_UDP_L4)) {
+ if (ssi->gso_size &&
+ !(ssi->gso_type & (SKB_GSO_UDP_L4 | SKB_GSO_UDPV6_L4))) {
struct cpl_tx_pkt_lso_core *lso = (void *)(wr + 1);
struct cpl_tx_tnl_lso *tnl_lso = (void *)(wr + 1);

@@ -2061,8 +2062,7 @@ static inline u8 ethofld_calc_tx_flits(struct adapter *adap,
u32 wrlen;

wrlen = sizeof(struct fw_eth_tx_eo_wr) + sizeof(struct cpl_tx_pkt_core);
- if (skb_shinfo(skb)->gso_size &&
- !(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4))
+ if (skb_shinfo(skb)->gso_size && !skb_is_gso_udp(skb))
wrlen += sizeof(struct cpl_tx_pkt_lso_core);

wrlen += roundup(hdr_len, 16);
@@ -2097,8 +2097,7 @@ static void *write_eo_wr(struct adapter *adap, struct sge_eosw_txq *eosw_txq,

wrlen16 = DIV_ROUND_UP(wrlen, 16);
immd_len = sizeof(struct cpl_tx_pkt_core);
- if (skb_shinfo(skb)->gso_size &&
- !(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4))
+ if (skb_shinfo(skb)->gso_size && !skb_is_gso_udp(skb))
immd_len += sizeof(struct cpl_tx_pkt_lso_core);
immd_len += hdr_len;

@@ -2259,7 +2258,7 @@ static int ethofld_hard_xmit(struct net_device *dev,
}

if (skb_shinfo(skb)->gso_size) {
- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
+ if (skb_is_gso_udp(skb))
eohw_txq->uso++;
else
eohw_txq->tso++;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 05c6d3e..7d4488f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -13015,6 +13015,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4 |
NETIF_F_SCTP_CRC |
NETIF_F_RXHASH |
NETIF_F_RXCSUM |
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 91ab824..1c5b621 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2957,7 +2957,7 @@ static int i40e_tso(struct i40e_tx_buffer *first, u8 *hdr_len,
/* remove payload length from inner checksum */
paylen = skb->len - l4_offset;

- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ if (skb_shinfo(skb)->gso_type & skb_is_gso_udp(skb)) {
csum_replace_by_diff(&l4.udp->check, (__force __wsum)htonl(paylen));
/* compute length of segmentation header */
*hdr_len = sizeof(*l4.udp) + l4_offset;
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 2297ee7..c3c8337 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -2919,7 +2919,8 @@ static void ice_set_netdev_features(struct net_device *netdev)
NETIF_F_GSO_PARTIAL |
NETIF_F_GSO_IPXIP4 |
NETIF_F_GSO_IPXIP6 |
- NETIF_F_GSO_UDP_L4;
+ NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;

netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_GRE_CSUM;
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index eae7526..f8b6471 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -2153,7 +2153,7 @@ int ice_tso(struct ice_tx_buf *first, struct ice_tx_offload_params *off)
/* remove payload length from checksum */
paylen = skb->len - l4_start;

- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ if (skb_shinfo(skb)->gso_type & skb_is_gso_udp(skb)) {
csum_replace_by_diff(&l4.udp->check,
(__force __wsum)htonl(paylen));
/* compute length of UDP segmentation header */
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 698bb6a..188532a 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2510,6 +2510,7 @@ igb_features_check(struct sk_buff *skb, struct net_device *dev,
return features & ~(NETIF_F_HW_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4 |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_TSO |
NETIF_F_TSO6);
@@ -2519,6 +2520,7 @@ igb_features_check(struct sk_buff *skb, struct net_device *dev,
return features & ~(NETIF_F_HW_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4 |
NETIF_F_TSO |
NETIF_F_TSO6);

@@ -3115,7 +3117,8 @@ static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
NETIF_F_HW_CSUM;

if (hw->mac.type >= e1000_82576)
- netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4;
+ netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;

if (hw->mac.type >= e1000_i350)
netdev->features |= NETIF_F_HW_TC;
@@ -5728,8 +5731,8 @@ static int igb_tso(struct igb_ring *tx_ring,
l4.hdr = skb_checksum_start(skb);

/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
- type_tucmd = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ?
- E1000_ADVTXD_TUCMD_L4T_UDP : E1000_ADVTXD_TUCMD_L4T_TCP;
+ type_tucmd = skb_is_gso_udp(skb) ?
+ E1000_ADVTXD_TUCMD_L4T_UDP : E1000_ADVTXD_TUCMD_L4T_TCP;

/* initialize outer IP header fields */
if (ip.v4->version == 4) {
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 0b675c3..f3738592 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7957,8 +7957,8 @@ static int ixgbe_tso(struct ixgbe_ring *tx_ring,
l4.hdr = skb_checksum_start(skb);

/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
- type_tucmd = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ?
- IXGBE_ADVTXD_TUCMD_L4T_UDP : IXGBE_ADVTXD_TUCMD_L4T_TCP;
+ type_tucmd = skb_is_gso_udp(skb) ?
+ IXGBE_ADVTXD_TUCMD_L4T_UDP : IXGBE_ADVTXD_TUCMD_L4T_TCP;

/* initialize outer IP header fields */
if (ip.v4->version == 4) {
@@ -10057,6 +10057,7 @@ ixgbe_features_check(struct sk_buff *skb, struct net_device *dev,
return features & ~(NETIF_F_HW_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4 |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_TSO |
NETIF_F_TSO6);
@@ -10066,6 +10067,7 @@ ixgbe_features_check(struct sk_buff *skb, struct net_device *dev,
return features & ~(NETIF_F_HW_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4 |
NETIF_F_TSO |
NETIF_F_TSO6);

@@ -10788,7 +10790,8 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
IXGBE_GSO_PARTIAL_FEATURES;

if (hw->mac.type >= ixgbe_mac_82599EB)
- netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4;
+ netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;

#ifdef CONFIG_IXGBE_IPSEC
#define IXGBE_ESP_FEATURES (NETIF_F_HW_ESP | \
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index 820fc66..dea624a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -451,7 +451,7 @@ void otx2_setup_segmentation(struct otx2_nic *pfvf)
mutex_unlock(&pfvf->mbox.lock);
netdev_info(pfvf->netdev,
"Failed to get LSO index for UDP GSO offload, disabling\n");
- pfvf->netdev->hw_features &= ~NETIF_F_GSO_UDP_L4;
+ pfvf->netdev->hw_features &= ~(NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_UDPV6_L4);
}

void otx2_config_irq_coalescing(struct otx2_nic *pfvf, int qidx)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index aac2845..5c29b2c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -2095,7 +2095,7 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
netdev->hw_features = (NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM | NETIF_F_RXHASH |
NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
- NETIF_F_GSO_UDP_L4);
+ NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_UDPV6_L4);
netdev->features |= netdev->hw_features;

netdev->hw_features |= NETIF_F_LOOPBACK | NETIF_F_RXALL;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
index faaa322..9e726c4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
@@ -529,7 +529,7 @@ static void otx2_sqe_add_ext(struct otx2_nic *pfvf, struct otx2_snd_queue *sq,

ipv6_hdr(skb)->payload_len =
htons(ext->lso_sb - skb_network_offset(skb));
- } else if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ } else if (skb_is_gso_udp(skb)) {
__be16 l3_proto = vlan_get_protocol(skb);
struct udphdr *udph = udp_hdr(skb);
u16 iplen;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index 70e0d4c..f3a01fb 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -554,7 +554,7 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM | NETIF_F_RXHASH |
NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
- NETIF_F_GSO_UDP_L4;
+ NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_UDPV6_L4;
netdev->features = netdev->hw_features;

netdev->gso_max_segs = OTX2_MAX_GSO_SEGS;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h
index 110476b..e6f098d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h
@@ -114,7 +114,7 @@ static inline bool mlx5e_accel_tx_begin(struct net_device *dev,
struct sk_buff *skb,
struct mlx5e_accel_tx_state *state)
{
- if (skb_is_gso(skb) && skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
+ if (skb_is_gso(skb) && skb_is_gso_udp(skb))
mlx5e_udp_gso_handle_tx_skb(skb);

#ifdef CONFIG_MLX5_EN_TLS
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 2683462..7417f3d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4890,9 +4890,12 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
}

netdev->hw_features |= NETIF_F_GSO_PARTIAL;
- netdev->gso_partial_features |= NETIF_F_GSO_UDP_L4;
- netdev->hw_features |= NETIF_F_GSO_UDP_L4;
- netdev->features |= NETIF_F_GSO_UDP_L4;
+ netdev->gso_partial_features |= NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;
+ netdev->hw_features |= NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;
+ netdev->features |= NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;

mlx5_query_port_fcs(mdev, &fcs_supported, &fcs_enabled);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
index da596de..0a17ce9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -172,7 +172,7 @@ mlx5e_tx_get_gso_ihs(struct mlx5e_txqsq *sq, struct sk_buff *skb)
stats->tso_inner_packets++;
stats->tso_inner_bytes += skb->len - ihs;
} else {
- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
+ if (skb_is_gso_udp(skb))
ihs = skb_transport_offset(skb) + sizeof(struct udphdr);
else
ihs = skb_transport_offset(skb) + tcp_hdrlen(skb);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 89b2b34..3b6c033 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3061,7 +3061,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
first_tx = tx_q->cur_tx;

/* Compute header lengths */
- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ if (skb_is_gso_udp(skb)) {
proto_hdr_len = skb_transport_offset(skb) + sizeof(struct udphdr);
hdr = sizeof(struct udphdr);
} else {
@@ -3313,7 +3313,8 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
if (skb_is_gso(skb) && priv->tso) {
if (gso & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))
return stmmac_tso_xmit(skb, dev);
- if (priv->plat->has_gmac4 && (gso & SKB_GSO_UDP_L4))
+ if (priv->plat->has_gmac4 &&
+ (gso & (SKB_GSO_UDP_L4 | SKB_GSO_UDPV6_L4)))
return stmmac_tso_xmit(skb, dev);
}

@@ -4236,7 +4237,8 @@ static u16 stmmac_select_queue(struct net_device *dev, struct sk_buff *skb,
{
int gso = skb_shinfo(skb)->gso_type;

- if (gso & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6 | SKB_GSO_UDP_L4)) {
+ if (gso & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6 | SKB_GSO_UDP_L4 |
+ SKB_GSO_UDPV6_L4)) {
/*
* There is no way to determine the number of TSO/USO
* capable Queues. Let's use always the Queue 0
@@ -4837,7 +4839,8 @@ int stmmac_dvr_probe(struct device *device,
if ((priv->plat->tso_en) && (priv->dma_cap.tsoen)) {
ndev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
if (priv->plat->has_gmac4)
- ndev->hw_features |= NETIF_F_GSO_UDP_L4;
+ ndev->hw_features |= NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;
priv->tso = true;
dev_info(priv->device, "TSO feature enabled\n");
}
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 8c1e027..576da5f 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1010,7 +1010,8 @@ static void __team_compute_features(struct team *team)
team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX |
- NETIF_F_GSO_UDP_L4;
+ NETIF_F_GSO_UDP_L4 |
+ NETIF_F_GSO_UDPV6_L4;
team->dev->hard_header_len = max_hard_header_len;

team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
@@ -2174,7 +2175,7 @@ static void team_setup(struct net_device *dev)
NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_CTAG_FILTER;

- dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
+ dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4 | NETIF_F_GSO_UDPV6_L4;
dev->features |= dev->hw_features;
dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
}
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 2cc3cf8..4806a9f 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -54,8 +54,9 @@ enum {
NETIF_F_GSO_UDP_BIT, /* ... UFO, deprecated except tuntap */
NETIF_F_GSO_UDP_L4_BIT, /* ... UDP payload GSO (not UFO) */
NETIF_F_GSO_FRAGLIST_BIT, /* ... Fraglist GSO */
+ NETIF_F_GSO_UDPV6_L4_BIT, /* ... UDPv6 payload GSO (not UFO) */
/**/NETIF_F_GSO_LAST = /* last bit, see GSO_MASK */
- NETIF_F_GSO_FRAGLIST_BIT,
+ NETIF_F_GSO_UDPV6_L4_BIT,

NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */
@@ -157,6 +158,7 @@ enum {
#define NETIF_F_GRO_FRAGLIST __NETIF_F(GRO_FRAGLIST)
#define NETIF_F_GSO_FRAGLIST __NETIF_F(GSO_FRAGLIST)
#define NETIF_F_HW_MACSEC __NETIF_F(HW_MACSEC)
+#define NETIF_F_GSO_UDPV6_L4 __NETIF_F(GSO_UDPV6_L4)

/* Finds the next feature with the highest number of the range of start till 0.
*/
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 7f9fcfd..7ad7f6e 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4760,6 +4760,7 @@ static inline bool net_gso_ok(netdev_features_t features, int gso_type)
BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT));
BUILD_BUG_ON(SKB_GSO_FRAGLIST != (NETIF_F_GSO_FRAGLIST >> NETIF_F_GSO_SHIFT));
+ BUILD_BUG_ON(SKB_GSO_UDPV6_L4 != (NETIF_F_GSO_UDPV6_L4 >> NETIF_F_GSO_SHIFT));

return (features & feature) == feature;
}
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 46881d9..10b3264 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -596,6 +596,8 @@ enum {
SKB_GSO_UDP_L4 = 1 << 17,

SKB_GSO_FRAGLIST = 1 << 18,
+
+ SKB_GSO_UDPV6_L4 = 1 << 19,
};

#if BITS_PER_LONG > 32
@@ -4454,6 +4456,12 @@ static inline bool skb_is_gso_tcp(const struct sk_buff *skb)
return skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6);
}

+/* Note: Should be called only if skb_is_gso(skb) is true */
+static inline bool skb_is_gso_udp(const struct sk_buff *skb)
+{
+ return skb_shinfo(skb)->gso_type & (SKB_GSO_UDP_L4 | SKB_GSO_UDPV6_L4);
+}
+
static inline void skb_gso_reset(struct sk_buff *skb)
{
skb_shinfo(skb)->gso_size = 0;
diff --git a/include/linux/udp.h b/include/linux/udp.h
index aa84597..b151804 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -123,7 +123,7 @@ static inline void udp_cmsg_recv(struct msghdr *msg, struct sock *sk,
{
int gso_size;

- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ if (skb_is_gso_udp(skb)) {
gso_size = skb_shinfo(skb)->gso_size;
put_cmsg(msg, SOL_UDP, UDP_GRO, sizeof(gso_size), &gso_size);
}
@@ -132,7 +132,7 @@ static inline void udp_cmsg_recv(struct msghdr *msg, struct sock *sk,
static inline bool udp_unexpected_gso(struct sock *sk, struct sk_buff *skb)
{
return !udp_sk(sk)->gro_enabled && skb_is_gso(skb) &&
- skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4;
+ skb_is_gso_udp(skb);
}

#define udp_portaddr_for_each_entry(__sk, list) \
diff --git a/net/core/filter.c b/net/core/filter.c
index 47eef9a..a68f178 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -3083,8 +3083,7 @@ static int bpf_skb_net_grow(struct sk_buff *skb, u32 off, u32 len_diff,

if (skb_is_gso(skb) && !skb_is_gso_tcp(skb)) {
/* udp gso_size delineates datagrams, only allow if fixed */
- if (!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ||
- !(flags & BPF_F_ADJ_ROOM_FIXED_GSO))
+ if (!skb_is_gso_udp(skb) || !(flags & BPF_F_ADJ_ROOM_FIXED_GSO))
return -ENOTSUPP;
}

@@ -3181,8 +3180,7 @@ static int bpf_skb_net_shrink(struct sk_buff *skb, u32 off, u32 len_diff,

if (skb_is_gso(skb) && !skb_is_gso_tcp(skb)) {
/* udp gso_size delineates datagrams, only allow if fixed */
- if (!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ||
- !(flags & BPF_F_ADJ_ROOM_FIXED_GSO))
+ if (!skb_is_gso_udp(skb) || !(flags & BPF_F_ADJ_ROOM_FIXED_GSO))
return -ENOTSUPP;
}

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index a5c11aa..f233567 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -5263,7 +5263,7 @@ static unsigned int skb_gso_transport_seglen(const struct sk_buff *skb)
thlen = tcp_hdrlen(skb);
} else if (unlikely(skb_is_gso_sctp(skb))) {
thlen = sizeof(struct sctphdr);
- } else if (shinfo->gso_type & SKB_GSO_UDP_L4) {
+ } else if (shinfo->gso_type & (SKB_GSO_UDP_L4 | SKB_GSO_UDPV6_L4)) {
thlen = sizeof(struct udphdr);
}
/* UFO sets gso_size to the size of the fragmentation
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index ed19573..134491b 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -47,6 +47,7 @@ const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
[NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
[NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation",
[NETIF_F_GSO_FRAGLIST_BIT] = "tx-gso-list",
+ [NETIF_F_GSO_UDPV6_L4_BIT] = "tx-udpv6-segmentation",

[NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
[NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 29d9691..df5cc92 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1204,7 +1204,7 @@ static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6,

if (datalen > cork->gso_size) {
skb_shinfo(skb)->gso_size = cork->gso_size;
- skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
+ skb_shinfo(skb)->gso_type = SKB_GSO_UDPV6_L4;
skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(datalen,
cork->gso_size);
}
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index 584157a..a02c9c3 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -39,13 +39,13 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
const struct ipv6hdr *ipv6h;
struct udphdr *uh;

- if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDP_L4)))
+ if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDPV6_L4)))
goto out;

if (!pskb_may_pull(skb, sizeof(struct udphdr)))
goto out;

- if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
+ if (skb_shinfo(skb)->gso_type & SKB_GSO_UDPV6_L4)
return __udp_gso_segment(skb, features);

/* Do software UFO. Complete and fill in the UDP checksum as HW cannot
@@ -153,7 +153,7 @@ INDIRECT_CALLABLE_SCOPE int udp6_gro_complete(struct sk_buff *skb, int nhoff)
if (NAPI_GRO_CB(skb)->is_flist) {
uh->len = htons(skb->len - nhoff);

- skb_shinfo(skb)->gso_type |= (SKB_GSO_FRAGLIST|SKB_GSO_UDP_L4);
+ skb_shinfo(skb)->gso_type |= (SKB_GSO_FRAGLIST | SKB_GSO_UDPV6_L4);
skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count;

if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
--
2.7.4