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-rw-r--r--drivers/net/ethernet/amd/xgbe/xgbe.h3
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_netdev.c3
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_tx.c47
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_main.c1
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_rx.c2
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/en_tx.c111
-rw-r--r--drivers/net/ethernet/sfc/ef100_nic.c3
-rw-r--r--drivers/net/ethernet/sfc/falcon/tx.c3
-rw-r--r--drivers/net/ethernet/sfc/tx_common.c3
-rw-r--r--drivers/net/ethernet/synopsys/dwc-xlgmac.h3
-rw-r--r--drivers/net/hyperv/rndis_filter.c2
-rw-r--r--drivers/net/loopback.c2
-rw-r--r--drivers/net/veth.c1
-rw-r--r--drivers/scsi/fcoe/fcoe.c2
14 files changed, 146 insertions, 40 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h
index 607a2c90513b..d9547552ceef 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe.h
@@ -151,7 +151,8 @@
#define XGBE_TX_MAX_BUF_SIZE (0x3fff & ~(64 - 1))
/* Descriptors required for maximum contiguous TSO/GSO packet */
-#define XGBE_TX_MAX_SPLIT ((GSO_MAX_SIZE / XGBE_TX_MAX_BUF_SIZE) + 1)
+#define XGBE_TX_MAX_SPLIT \
+ ((GSO_LEGACY_MAX_SIZE / XGBE_TX_MAX_BUF_SIZE) + 1)
/* Maximum possible descriptors needed for an SKB:
* - Maximum number of SKB frags
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index c61dc7ae0c05..ca4b93a01034 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -3417,6 +3417,9 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
dev->min_mtu = ETH_MIN_MTU;
dev->max_mtu = priv->max_mtu;
+ /* supports LSOv2 packets. */
+ netif_set_tso_max_size(dev, GSO_MAX_SIZE);
+
mdev->pndev[port] = dev;
mdev->upper[port] = NULL;
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
index f777151d226f..af3b2b59a2a6 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -43,6 +43,7 @@
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/indirect_call_wrapper.h>
+#include <net/ipv6.h>
#include "mlx4_en.h"
@@ -634,19 +635,28 @@ static int get_real_size(const struct sk_buff *skb,
struct net_device *dev,
int *lso_header_size,
bool *inline_ok,
- void **pfrag)
+ void **pfrag,
+ int *hopbyhop)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
int real_size;
if (shinfo->gso_size) {
*inline_ok = false;
- if (skb->encapsulation)
+ *hopbyhop = 0;
+ if (skb->encapsulation) {
*lso_header_size = (skb_inner_transport_header(skb) - skb->data) + inner_tcp_hdrlen(skb);
- else
+ } else {
+ /* Detects large IPV6 TCP packets and prepares for removal of
+ * HBH header that has been pushed by ip6_xmit(),
+ * mainly so that tcpdump can dissect them.
+ */
+ if (ipv6_has_hopopt_jumbo(skb))
+ *hopbyhop = sizeof(struct hop_jumbo_hdr);
*lso_header_size = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ }
real_size = CTRL_SIZE + shinfo->nr_frags * DS_SIZE +
- ALIGN(*lso_header_size + 4, DS_SIZE);
+ ALIGN(*lso_header_size - *hopbyhop + 4, DS_SIZE);
if (unlikely(*lso_header_size != skb_headlen(skb))) {
/* We add a segment for the skb linear buffer only if
* it contains data */
@@ -873,6 +883,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
int desc_size;
int real_size;
u32 index, bf_index;
+ struct ipv6hdr *h6;
__be32 op_own;
int lso_header_size;
void *fragptr = NULL;
@@ -881,6 +892,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
bool stop_queue;
bool inline_ok;
u8 data_offset;
+ int hopbyhop;
bool bf_ok;
tx_ind = skb_get_queue_mapping(skb);
@@ -890,7 +902,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
goto tx_drop;
real_size = get_real_size(skb, shinfo, dev, &lso_header_size,
- &inline_ok, &fragptr);
+ &inline_ok, &fragptr, &hopbyhop);
if (unlikely(!real_size))
goto tx_drop_count;
@@ -943,7 +955,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
data = &tx_desc->data;
data_offset = offsetof(struct mlx4_en_tx_desc, data);
} else {
- int lso_align = ALIGN(lso_header_size + 4, DS_SIZE);
+ int lso_align = ALIGN(lso_header_size - hopbyhop + 4, DS_SIZE);
data = (void *)&tx_desc->lso + lso_align;
data_offset = offsetof(struct mlx4_en_tx_desc, lso) + lso_align;
@@ -1008,14 +1020,31 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
((ring->prod & ring->size) ?
cpu_to_be32(MLX4_EN_BIT_DESC_OWN) : 0);
+ lso_header_size -= hopbyhop;
/* Fill in the LSO prefix */
tx_desc->lso.mss_hdr_size = cpu_to_be32(
shinfo->gso_size << 16 | lso_header_size);
- /* Copy headers;
- * note that we already verified that it is linear */
- memcpy(tx_desc->lso.header, skb->data, lso_header_size);
+ if (unlikely(hopbyhop)) {
+ /* remove the HBH header.
+ * Layout: [Ethernet header][IPv6 header][HBH][TCP header]
+ */
+ memcpy(tx_desc->lso.header, skb->data, ETH_HLEN + sizeof(*h6));
+ h6 = (struct ipv6hdr *)((char *)tx_desc->lso.header + ETH_HLEN);
+ h6->nexthdr = IPPROTO_TCP;
+ /* Copy the TCP header after the IPv6 one */
+ memcpy(h6 + 1,
+ skb->data + ETH_HLEN + sizeof(*h6) +
+ sizeof(struct hop_jumbo_hdr),
+ tcp_hdrlen(skb));
+ /* Leave ipv6 payload_len set to 0, as LSO v2 specs request. */
+ } else {
+ /* Copy headers;
+ * note that we already verified that it is linear
+ */
+ memcpy(tx_desc->lso.header, skb->data, lso_header_size);
+ }
ring->tso_packets++;
i = shinfo->gso_segs;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index d27986869b8b..bf3bca79e160 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4920,6 +4920,7 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
netdev->priv_flags |= IFF_UNICAST_FLT;
+ netif_set_tso_max_size(netdev, GSO_MAX_SIZE);
mlx5e_set_netdev_dev_addr(netdev);
mlx5e_ipsec_build_netdev(priv);
mlx5e_ktls_build_netdev(priv);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index fb11081001a0..24de37b79f5a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -2038,7 +2038,7 @@ mlx5e_hw_gro_skb_has_enough_space(struct sk_buff *skb, u16 data_bcnt)
{
int nr_frags = skb_shinfo(skb)->nr_frags;
- return PAGE_SIZE * nr_frags + data_bcnt <= GSO_MAX_SIZE;
+ return PAGE_SIZE * nr_frags + data_bcnt <= GRO_LEGACY_MAX_SIZE;
}
static void
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
index 5855d8f9c509..50d14cec4894 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -40,6 +40,7 @@
#include "en_accel/en_accel.h"
#include "en_accel/ipsec_rxtx.h"
#include "en/ptp.h"
+#include <net/ipv6.h>
static void mlx5e_dma_unmap_wqe_err(struct mlx5e_txqsq *sq, u8 num_dma)
{
@@ -91,6 +92,13 @@ static inline u16 mlx5e_calc_min_inline(enum mlx5_inline_modes mode,
return min_t(u16, hlen, skb_headlen(skb));
}
+#define MLX5_UNSAFE_MEMCPY_DISCLAIMER \
+ "This copy has been bounds-checked earlier in " \
+ "mlx5i_sq_calc_wqe_attr() and intentionally " \
+ "crosses a flex array boundary. Since it is " \
+ "performance sensitive, splitting the copy is " \
+ "undesirable."
+
static inline void mlx5e_insert_vlan(void *start, struct sk_buff *skb, u16 ihs)
{
struct vlan_ethhdr *vhdr = (struct vlan_ethhdr *)start;
@@ -100,7 +108,10 @@ static inline void mlx5e_insert_vlan(void *start, struct sk_buff *skb, u16 ihs)
memcpy(&vhdr->addrs, skb->data, cpy1_sz);
vhdr->h_vlan_proto = skb->vlan_proto;
vhdr->h_vlan_TCI = cpu_to_be16(skb_vlan_tag_get(skb));
- memcpy(&vhdr->h_vlan_encapsulated_proto, skb->data + cpy1_sz, cpy2_sz);
+ unsafe_memcpy(&vhdr->h_vlan_encapsulated_proto,
+ skb->data + cpy1_sz,
+ cpy2_sz,
+ MLX5_UNSAFE_MEMCPY_DISCLAIMER);
}
static inline void
@@ -130,23 +141,32 @@ mlx5e_txwqe_build_eseg_csum(struct mlx5e_txqsq *sq, struct sk_buff *skb,
sq->stats->csum_none++;
}
+/* Returns the number of header bytes that we plan
+ * to inline later in the transmit descriptor
+ */
static inline u16
-mlx5e_tx_get_gso_ihs(struct mlx5e_txqsq *sq, struct sk_buff *skb)
+mlx5e_tx_get_gso_ihs(struct mlx5e_txqsq *sq, struct sk_buff *skb, int *hopbyhop)
{
struct mlx5e_sq_stats *stats = sq->stats;
u16 ihs;
+ *hopbyhop = 0;
if (skb->encapsulation) {
ihs = skb_inner_transport_offset(skb) + inner_tcp_hdrlen(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_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
ihs = skb_transport_offset(skb) + sizeof(struct udphdr);
- else
+ } else {
ihs = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ if (ipv6_has_hopopt_jumbo(skb)) {
+ *hopbyhop = sizeof(struct hop_jumbo_hdr);
+ ihs -= sizeof(struct hop_jumbo_hdr);
+ }
+ }
stats->tso_packets++;
- stats->tso_bytes += skb->len - ihs;
+ stats->tso_bytes += skb->len - ihs - *hopbyhop;
}
return ihs;
@@ -208,6 +228,7 @@ struct mlx5e_tx_attr {
__be16 mss;
u16 insz;
u8 opcode;
+ u8 hopbyhop;
};
struct mlx5e_tx_wqe_attr {
@@ -244,14 +265,16 @@ static void mlx5e_sq_xmit_prepare(struct mlx5e_txqsq *sq, struct sk_buff *skb,
struct mlx5e_sq_stats *stats = sq->stats;
if (skb_is_gso(skb)) {
- u16 ihs = mlx5e_tx_get_gso_ihs(sq, skb);
+ int hopbyhop;
+ u16 ihs = mlx5e_tx_get_gso_ihs(sq, skb, &hopbyhop);
*attr = (struct mlx5e_tx_attr) {
.opcode = MLX5_OPCODE_LSO,
.mss = cpu_to_be16(skb_shinfo(skb)->gso_size),
.ihs = ihs,
.num_bytes = skb->len + (skb_shinfo(skb)->gso_segs - 1) * ihs,
- .headlen = skb_headlen(skb) - ihs,
+ .headlen = skb_headlen(skb) - ihs - hopbyhop,
+ .hopbyhop = hopbyhop,
};
stats->packets += skb_shinfo(skb)->gso_segs;
@@ -365,7 +388,8 @@ mlx5e_sq_xmit_wqe(struct mlx5e_txqsq *sq, struct sk_buff *skb,
struct mlx5_wqe_eth_seg *eseg;
struct mlx5_wqe_data_seg *dseg;
struct mlx5e_tx_wqe_info *wi;
-
+ u16 ihs = attr->ihs;
+ struct ipv6hdr *h6;
struct mlx5e_sq_stats *stats = sq->stats;
int num_dma;
@@ -379,21 +403,40 @@ mlx5e_sq_xmit_wqe(struct mlx5e_txqsq *sq, struct sk_buff *skb,
eseg->mss = attr->mss;
- if (attr->ihs) {
- if (skb_vlan_tag_present(skb)) {
- eseg->inline_hdr.sz |= cpu_to_be16(attr->ihs + VLAN_HLEN);
- mlx5e_insert_vlan(eseg->inline_hdr.start, skb, attr->ihs);
+ if (ihs) {
+ u8 *start = eseg->inline_hdr.start;
+
+ if (unlikely(attr->hopbyhop)) {
+ /* remove the HBH header.
+ * Layout: [Ethernet header][IPv6 header][HBH][TCP header]
+ */
+ if (skb_vlan_tag_present(skb)) {
+ mlx5e_insert_vlan(start, skb, ETH_HLEN + sizeof(*h6));
+ ihs += VLAN_HLEN;
+ h6 = (struct ipv6hdr *)(start + sizeof(struct vlan_ethhdr));
+ } else {
+ unsafe_memcpy(start, skb->data,
+ ETH_HLEN + sizeof(*h6),
+ MLX5_UNSAFE_MEMCPY_DISCLAIMER);
+ h6 = (struct ipv6hdr *)(start + ETH_HLEN);
+ }
+ h6->nexthdr = IPPROTO_TCP;
+ /* Copy the TCP header after the IPv6 one */
+ memcpy(h6 + 1,
+ skb->data + ETH_HLEN + sizeof(*h6) +
+ sizeof(struct hop_jumbo_hdr),
+ tcp_hdrlen(skb));
+ /* Leave ipv6 payload_len set to 0, as LSO v2 specs request. */
+ } else if (skb_vlan_tag_present(skb)) {
+ mlx5e_insert_vlan(start, skb, ihs);
+ ihs += VLAN_HLEN;
stats->added_vlan_packets++;
} else {
- eseg->inline_hdr.sz |= cpu_to_be16(attr->ihs);
- unsafe_memcpy(eseg->inline_hdr.start, skb->data, attr->ihs,
- /* This copy has been bounds-checked earlier in
- * mlx5i_sq_calc_wqe_attr() and intentionally
- * crosses a flex array boundary. Since it is
- * performance sensitive, splitting the copy is
- * undesirable.
- */);
+ unsafe_memcpy(eseg->inline_hdr.start, skb->data,
+ attr->ihs,
+ MLX5_UNSAFE_MEMCPY_DISCLAIMER);
}
+ eseg->inline_hdr.sz |= cpu_to_be16(ihs);
dseg += wqe_attr->ds_cnt_inl;
} else if (skb_vlan_tag_present(skb)) {
eseg->insert.type = cpu_to_be16(MLX5_ETH_WQE_INSERT_VLAN);
@@ -404,7 +447,7 @@ mlx5e_sq_xmit_wqe(struct mlx5e_txqsq *sq, struct sk_buff *skb,
}
dseg += wqe_attr->ds_cnt_ids;
- num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + attr->ihs,
+ num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + attr->ihs + attr->hopbyhop,
attr->headlen, dseg);
if (unlikely(num_dma < 0))
goto err_drop;
@@ -924,12 +967,34 @@ void mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
eseg->mss = attr.mss;
if (attr.ihs) {
- memcpy(eseg->inline_hdr.start, skb->data, attr.ihs);
+ if (unlikely(attr.hopbyhop)) {
+ struct ipv6hdr *h6;
+
+ /* remove the HBH header.
+ * Layout: [Ethernet header][IPv6 header][HBH][TCP header]
+ */
+ unsafe_memcpy(eseg->inline_hdr.start, skb->data,
+ ETH_HLEN + sizeof(*h6),
+ MLX5_UNSAFE_MEMCPY_DISCLAIMER);
+ h6 = (struct ipv6hdr *)((char *)eseg->inline_hdr.start + ETH_HLEN);
+ h6->nexthdr = IPPROTO_TCP;
+ /* Copy the TCP header after the IPv6 one */
+ unsafe_memcpy(h6 + 1,
+ skb->data + ETH_HLEN + sizeof(*h6) +
+ sizeof(struct hop_jumbo_hdr),
+ tcp_hdrlen(skb),
+ MLX5_UNSAFE_MEMCPY_DISCLAIMER);
+ /* Leave ipv6 payload_len set to 0, as LSO v2 specs request. */
+ } else {
+ unsafe_memcpy(eseg->inline_hdr.start, skb->data,
+ attr.ihs,
+ MLX5_UNSAFE_MEMCPY_DISCLAIMER);
+ }
eseg->inline_hdr.sz = cpu_to_be16(attr.ihs);
dseg += wqe_attr.ds_cnt_inl;
}
- num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + attr.ihs,
+ num_dma = mlx5e_txwqe_build_dsegs(sq, skb, skb->data + attr.ihs + attr.hopbyhop,
attr.headlen, dseg);
if (unlikely(num_dma < 0))
goto err_drop;
diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index a69d756e09b9..b2536d2c218a 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -1008,7 +1008,8 @@ static int ef100_process_design_param(struct efx_nic *efx,
}
return 0;
case ESE_EF100_DP_GZ_TSO_MAX_PAYLOAD_LEN:
- nic_data->tso_max_payload_len = min_t(u64, reader->value, GSO_MAX_SIZE);
+ nic_data->tso_max_payload_len = min_t(u64, reader->value,
+ GSO_LEGACY_MAX_SIZE);
netif_set_tso_max_size(efx->net_dev,
nic_data->tso_max_payload_len);
return 0;
diff --git a/drivers/net/ethernet/sfc/falcon/tx.c b/drivers/net/ethernet/sfc/falcon/tx.c
index f7306e93a8b8..b9369483758c 100644
--- a/drivers/net/ethernet/sfc/falcon/tx.c
+++ b/drivers/net/ethernet/sfc/falcon/tx.c
@@ -98,7 +98,8 @@ unsigned int ef4_tx_max_skb_descs(struct ef4_nic *efx)
/* Possibly more for PCIe page boundaries within input fragments */
if (PAGE_SIZE > EF4_PAGE_SIZE)
max_descs += max_t(unsigned int, MAX_SKB_FRAGS,
- DIV_ROUND_UP(GSO_MAX_SIZE, EF4_PAGE_SIZE));
+ DIV_ROUND_UP(GSO_LEGACY_MAX_SIZE,
+ EF4_PAGE_SIZE));
return max_descs;
}
diff --git a/drivers/net/ethernet/sfc/tx_common.c b/drivers/net/ethernet/sfc/tx_common.c
index 9bc8281b7f5b..658ea2d34070 100644
--- a/drivers/net/ethernet/sfc/tx_common.c
+++ b/drivers/net/ethernet/sfc/tx_common.c
@@ -416,7 +416,8 @@ unsigned int efx_tx_max_skb_descs(struct efx_nic *efx)
/* Possibly more for PCIe page boundaries within input fragments */
if (PAGE_SIZE > EFX_PAGE_SIZE)
max_descs += max_t(unsigned int, MAX_SKB_FRAGS,
- DIV_ROUND_UP(GSO_MAX_SIZE, EFX_PAGE_SIZE));
+ DIV_ROUND_UP(GSO_LEGACY_MAX_SIZE,
+ EFX_PAGE_SIZE));
return max_descs;
}
diff --git a/drivers/net/ethernet/synopsys/dwc-xlgmac.h b/drivers/net/ethernet/synopsys/dwc-xlgmac.h
index 98e3a271e017..a848e10f3ea4 100644
--- a/drivers/net/ethernet/synopsys/dwc-xlgmac.h
+++ b/drivers/net/ethernet/synopsys/dwc-xlgmac.h
@@ -38,7 +38,8 @@
#define XLGMAC_RX_DESC_MAX_DIRTY (XLGMAC_RX_DESC_CNT >> 3)
/* Descriptors required for maximum contiguous TSO/GSO packet */
-#define XLGMAC_TX_MAX_SPLIT ((GSO_MAX_SIZE / XLGMAC_TX_MAX_BUF_SIZE) + 1)
+#define XLGMAC_TX_MAX_SPLIT \
+ ((GSO_LEGACY_MAX_SIZE / XLGMAC_TX_MAX_BUF_SIZE) + 1)
/* Maximum possible descriptors needed for a SKB */
#define XLGMAC_TX_MAX_DESC_NR (MAX_SKB_FRAGS + XLGMAC_TX_MAX_SPLIT + 2)
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 866af2cc27a3..6da36cb8af80 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -1349,7 +1349,7 @@ static int rndis_netdev_set_hwcaps(struct rndis_device *rndis_device,
struct net_device_context *net_device_ctx = netdev_priv(net);
struct ndis_offload hwcaps;
struct ndis_offload_params offloads;
- unsigned int gso_max_size = GSO_MAX_SIZE;
+ unsigned int gso_max_size = GSO_LEGACY_MAX_SIZE;
int ret;
/* Find HW offload capabilities */
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 720394c0639b..14e8d04cb434 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -191,6 +191,8 @@ static void gen_lo_setup(struct net_device *dev,
dev->netdev_ops = dev_ops;
dev->needs_free_netdev = true;
dev->priv_destructor = dev_destructor;
+
+ netif_set_tso_max_size(dev, GSO_MAX_SIZE);
}
/* The loopback device is special. There is only one instance
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index f474e79a7745..466da01ba2e3 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1647,6 +1647,7 @@ static void veth_setup(struct net_device *dev)
dev->hw_features = VETH_FEATURES;
dev->hw_enc_features = VETH_FEATURES;
dev->mpls_features = NETIF_F_HW_CSUM | NETIF_F_GSO_SOFTWARE;
+ netif_set_tso_max_size(dev, GSO_MAX_SIZE);
}
/*
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 44ca6110213c..79b2827e4081 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -667,7 +667,7 @@ static void fcoe_netdev_features_change(struct fc_lport *lport,
if (netdev->features & NETIF_F_FSO) {
lport->seq_offload = 1;
- lport->lso_max = netdev->gso_max_size;
+ lport->lso_max = min(netdev->gso_max_size, GSO_LEGACY_MAX_SIZE);
FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n",
lport->lso_max);
} else {
generated by cgit v1.2.3-71-gd317 (git 2.46.0) at 2026-01-01 11:34:04 +0000