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Message-ID: <20240821150700.1760518-6-aleksander.lobakin@intel.com>
Date: Wed, 21 Aug 2024 17:06:59 +0200
From: Alexander Lobakin <aleksander.lobakin@...el.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: Alexander Lobakin <aleksander.lobakin@...el.com>,
David Ahern <dsahern@...nel.org>,
Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
Andrew Lunn <andrew@...n.ch>,
Willem de Bruijn <willemdebruijn.kernel@...il.com>,
nex.sw.ncis.osdt.itp.upstreaming@...el.com,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next v4 5/6] netdev_features: convert NETIF_F_FCOE_MTU to dev->fcoe_mtu
Ability to handle maximum FCoE frames of 2158 bytes can never be changed
and thus more of an attribute, not a toggleable feature.
Move it from netdev_features_t to "cold" priv flags (bitfield bool) and
free yet another feature bit.
Signed-off-by: Alexander Lobakin <aleksander.lobakin@...el.com>
---
.../networking/net_cachelines/net_device.rst | 1 +
include/linux/netdev_features.h | 5 +----
include/linux/netdevice.h | 2 ++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c | 6 ++----
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c | 2 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c | 4 ++--
drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c | 2 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 11 ++++-------
drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 4 ++--
drivers/scsi/fcoe/fcoe.c | 4 ++--
net/8021q/vlan_dev.c | 1 +
net/ethtool/common.c | 1 -
12 files changed, 19 insertions(+), 24 deletions(-)
diff --git a/Documentation/networking/net_cachelines/net_device.rst b/Documentation/networking/net_cachelines/net_device.rst
index e65ffdfc9e0a..c3bbf101a887 100644
--- a/Documentation/networking/net_cachelines/net_device.rst
+++ b/Documentation/networking/net_cachelines/net_device.rst
@@ -167,6 +167,7 @@ unsigned:1 threaded -
unsigned_long:1 see_all_hwtstamp_requests
unsigned_long:1 change_proto_down
unsigned_long:1 netns_local
+unsigned_long:1 fcoe_mtu
struct_list_head net_notifier_list
struct_macsec_ops* macsec_ops
struct_udp_tunnel_nic_info* udp_tunnel_nic_info
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 3bacd4b1adc9..1e9c4da181af 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -55,7 +55,6 @@ enum {
NETIF_F_FCOE_CRC_BIT, /* FCoE CRC32 */
NETIF_F_SCTP_CRC_BIT, /* SCTP checksum offload */
- NETIF_F_FCOE_MTU_BIT, /* Supports max FCoE MTU, 2158 bytes*/
NETIF_F_NTUPLE_BIT, /* N-tuple filters supported */
NETIF_F_RXHASH_BIT, /* Receive hashing offload */
NETIF_F_RXCSUM_BIT, /* Receive checksumming offload */
@@ -102,7 +101,6 @@ enum {
#define __NETIF_F(name) __NETIF_F_BIT(NETIF_F_##name##_BIT)
#define NETIF_F_FCOE_CRC __NETIF_F(FCOE_CRC)
-#define NETIF_F_FCOE_MTU __NETIF_F(FCOE_MTU)
#define NETIF_F_FRAGLIST __NETIF_F(FRAGLIST)
#define NETIF_F_FSO __NETIF_F(FSO)
#define NETIF_F_GRO __NETIF_F(GRO)
@@ -207,8 +205,7 @@ static inline int find_next_netdev_feature(u64 feature, unsigned long start)
#define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | \
NETIF_F_TSO_ECN | NETIF_F_TSO_MANGLEID)
-#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
- NETIF_F_FSO)
+#define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FSO)
/* List of features with software fallbacks. */
#define NETIF_F_GSO_SOFTWARE (NETIF_F_ALL_TSO | NETIF_F_GSO_SCTP | \
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 1d5359ad87e1..cbfa6b42eabb 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1963,6 +1963,7 @@ enum netdev_reg_state {
* HWTSTAMP_SOURCE_NETDEV
* @change_proto_down: device supports setting carrier via IFLA_PROTO_DOWN
* @netns_local: interface can't change network namespaces
+ * @fcoe_mtu: device supports maximum FCoE MTU, 2158 bytes
*
* @net_notifier_list: List of per-net netdev notifier block
* that follow this device when it is moved
@@ -2356,6 +2357,7 @@ struct net_device {
unsigned long see_all_hwtstamp_requests:1;
unsigned long change_proto_down:1;
unsigned long netns_local:1;
+ unsigned long fcoe_mtu:1;
struct list_head net_notifier_list;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c
index 33b2c0c45509..f6f745f5c022 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c
@@ -81,8 +81,7 @@ int cxgb_fcoe_enable(struct net_device *netdev)
netdev->features |= NETIF_F_FCOE_CRC;
netdev->vlan_features |= NETIF_F_FCOE_CRC;
- netdev->features |= NETIF_F_FCOE_MTU;
- netdev->vlan_features |= NETIF_F_FCOE_MTU;
+ netdev->fcoe_mtu = true;
netdev_features_change(netdev);
@@ -112,8 +111,7 @@ int cxgb_fcoe_disable(struct net_device *netdev)
netdev->features &= ~NETIF_F_FCOE_CRC;
netdev->vlan_features &= ~NETIF_F_FCOE_CRC;
- netdev->features &= ~NETIF_F_FCOE_MTU;
- netdev->vlan_features &= ~NETIF_F_FCOE_MTU;
+ netdev->fcoe_mtu = false;
netdev_features_change(netdev);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
index e85f7d2e8810..f2709b10c2e5 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
@@ -317,7 +317,7 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
#ifdef IXGBE_FCOE
- if (adapter->netdev->features & NETIF_F_FCOE_MTU)
+ if (adapter->netdev->fcoe_mtu)
max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
#endif
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
index 18d63c8c2ff4..955dced844a9 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
@@ -858,7 +858,7 @@ int ixgbe_fcoe_enable(struct net_device *netdev)
/* enable FCoE and notify stack */
adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
- netdev->features |= NETIF_F_FCOE_MTU;
+ netdev->fcoe_mtu = true;
netdev_features_change(netdev);
/* release existing queues and reallocate them */
@@ -898,7 +898,7 @@ int ixgbe_fcoe_disable(struct net_device *netdev)
/* disable FCoE and notify stack */
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
- netdev->features &= ~NETIF_F_FCOE_MTU;
+ netdev->fcoe_mtu = false;
netdev_features_change(netdev);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
index 0ee943db3dc9..16fa621ce0ff 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
@@ -981,7 +981,7 @@ static int ixgbe_alloc_q_vector(struct ixgbe_adapter *adapter,
set_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state);
#ifdef IXGBE_FCOE
- if (adapter->netdev->features & NETIF_F_FCOE_MTU) {
+ if (adapter->netdev->fcoe_mtu) {
struct ixgbe_ring_feature *f;
f = &adapter->ring_feature[RING_F_FCOE];
if ((rxr_idx >= f->offset) &&
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 8057cef61f39..8b8404d8c946 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -5079,7 +5079,7 @@ static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
netif_set_tso_max_size(adapter->netdev, 32768);
#ifdef IXGBE_FCOE
- if (adapter->netdev->features & NETIF_F_FCOE_MTU)
+ if (adapter->netdev->fcoe_mtu)
max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
#endif
@@ -5136,8 +5136,7 @@ static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb)
#ifdef IXGBE_FCOE
/* FCoE traffic class uses FCOE jumbo frames */
- if ((dev->features & NETIF_F_FCOE_MTU) &&
- (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
+ if (dev->fcoe_mtu && tc < IXGBE_FCOE_JUMBO_FRAME_SIZE &&
(pb == ixgbe_fcoe_get_tc(adapter)))
tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
#endif
@@ -5197,8 +5196,7 @@ static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb)
#ifdef IXGBE_FCOE
/* FCoE traffic class uses FCOE jumbo frames */
- if ((dev->features & NETIF_F_FCOE_MTU) &&
- (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
+ if (dev->fcoe_mtu && tc < IXGBE_FCOE_JUMBO_FRAME_SIZE &&
(pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up)))
tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
#endif
@@ -11096,8 +11094,7 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
NETIF_F_FCOE_CRC;
netdev->vlan_features |= NETIF_F_FSO |
- NETIF_F_FCOE_CRC |
- NETIF_F_FCOE_MTU;
+ NETIF_F_FCOE_CRC;
}
#endif /* IXGBE_FCOE */
if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index fcfd0a075eee..e71715f5da22 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -495,7 +495,7 @@ static int ixgbe_set_vf_lpe(struct ixgbe_adapter *adapter, u32 max_frame, u32 vf
int err = 0;
#ifdef CONFIG_FCOE
- if (dev->features & NETIF_F_FCOE_MTU)
+ if (dev->fcoe_mtu)
pf_max_frame = max_t(int, pf_max_frame,
IXGBE_FCOE_JUMBO_FRAME_SIZE);
@@ -857,7 +857,7 @@ static void ixgbe_set_vf_rx_tx(struct ixgbe_adapter *adapter, int vf)
int pf_max_frame = dev->mtu + ETH_HLEN;
#if IS_ENABLED(CONFIG_FCOE)
- if (dev->features & NETIF_F_FCOE_MTU)
+ if (dev->fcoe_mtu)
pf_max_frame = max_t(int, pf_max_frame,
IXGBE_FCOE_JUMBO_FRAME_SIZE);
#endif /* CONFIG_FCOE */
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index f1429f270170..39aec710660c 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -722,7 +722,7 @@ static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev)
* will return 0, so do this first.
*/
mfs = netdev->mtu;
- if (netdev->features & NETIF_F_FCOE_MTU) {
+ if (netdev->fcoe_mtu) {
mfs = FCOE_MTU;
FCOE_NETDEV_DBG(netdev, "Supports FCOE_MTU of %d bytes\n", mfs);
}
@@ -1863,7 +1863,7 @@ static int fcoe_device_notification(struct notifier_block *notifier,
case NETDEV_CHANGE:
break;
case NETDEV_CHANGEMTU:
- if (netdev->features & NETIF_F_FCOE_MTU)
+ if (netdev->fcoe_mtu)
break;
mfs = netdev->mtu - (sizeof(struct fcoe_hdr) +
sizeof(struct fcoe_crc_eof));
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 3ca485537d77..09b46b057ab2 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -571,6 +571,7 @@ static int vlan_dev_init(struct net_device *dev)
dev->features |= dev->hw_features;
dev->lltx = true;
+ dev->fcoe_mtu = true;
netif_inherit_tso_max(dev, real_dev);
if (dev->features & NETIF_F_VLAN_FEATURES)
netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index ca8e64162104..00f93c58b319 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -50,7 +50,6 @@ const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
[NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
[NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
- [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
[NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
[NETIF_F_RXHASH_BIT] = "rx-hashing",
[NETIF_F_RXCSUM_BIT] = "rx-checksum",
--
2.46.0
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