diff options
| author | Alexander Lobakin <aleksander.lobakin@intel.com> | 2024-08-29 15:33:37 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-09-03 12:36:43 +0300 |
| commit | 00d066a4d4edbe559ba6c35153da71d4b2b8a383 (patch) | |
| tree | 33338a01e63fe69c377f5bb6d7aadbbd12c61c4a /include/linux | |
| parent | beb5a9bea8239cdf4adf6b62672e30db3e9fa5ce (diff) | |
| download | linux-00d066a4d4edbe559ba6c35153da71d4b2b8a383.tar.xz | |
netdev_features: convert NETIF_F_LLTX to dev->lltx
NETIF_F_LLTX can't be changed via Ethtool and is not a feature,
rather an attribute, very similar to IFF_NO_QUEUE (and hot).
Free one netdev_features_t bit and make it a "hot" private flag.
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netdev_features.h | 6 | ||||
| -rw-r--r-- | include/linux/netdevice.h | 10 |
2 files changed, 9 insertions, 7 deletions
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 7c2d77d75a88..a2e20b517584 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -24,8 +24,7 @@ enum { NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */ NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */ NETIF_F_GSO_BIT, /* Enable software GSO. */ - NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */ - /* do not use LLTX in new drivers */ + __UNUSED_NETIF_F_12, NETIF_F_NETNS_LOCAL_BIT, /* Does not change network namespaces */ NETIF_F_GRO_BIT, /* Generic receive offload */ NETIF_F_LRO_BIT, /* large receive offload */ @@ -120,7 +119,6 @@ enum { #define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX) #define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM) #define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM) -#define NETIF_F_LLTX __NETIF_F(LLTX) #define NETIF_F_LOOPBACK __NETIF_F(LOOPBACK) #define NETIF_F_LRO __NETIF_F(LRO) #define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL) @@ -193,7 +191,7 @@ static inline int find_next_netdev_feature(u64 feature, unsigned long start) /* Features valid for ethtool to change */ /* = all defined minus driver/device-class-related */ #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \ - NETIF_F_LLTX | NETIF_F_NETNS_LOCAL) + NETIF_F_NETNS_LOCAL) /* remember that ((t)1 << t_BITS) is undefined in C99 */ #define NETIF_F_ETHTOOL_BITS ((__NETIF_F_BIT(NETDEV_FEATURE_COUNT - 1) | \ diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d6f35c9d8580..e22ca5e07490 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1720,6 +1720,9 @@ enum netdev_reg_state { * * @priv_flags: flags invisible to userspace defined as bits, see * enum netdev_priv_flags for the definitions + * @lltx: device supports lockless Tx. Deprecated for real HW + * drivers. Mainly used by logical interfaces, such as + * bonding and tunnels * * @name: This is the first field of the "visible" part of this structure * (i.e. as seen by users in the "Space.c" file). It is the name @@ -2018,6 +2021,7 @@ struct net_device { __cacheline_group_begin(net_device_read_tx); struct_group(priv_flags_fast, unsigned long priv_flags:32; + unsigned long lltx:1; ); const struct net_device_ops *netdev_ops; const struct header_ops *header_ops; @@ -4433,7 +4437,7 @@ static inline void netif_tx_unlock_bh(struct net_device *dev) } #define HARD_TX_LOCK(dev, txq, cpu) { \ - if ((dev->features & NETIF_F_LLTX) == 0) { \ + if (!(dev)->lltx) { \ __netif_tx_lock(txq, cpu); \ } else { \ __netif_tx_acquire(txq); \ @@ -4441,12 +4445,12 @@ static inline void netif_tx_unlock_bh(struct net_device *dev) } #define HARD_TX_TRYLOCK(dev, txq) \ - (((dev->features & NETIF_F_LLTX) == 0) ? \ + (!(dev)->lltx ? \ __netif_tx_trylock(txq) : \ __netif_tx_acquire(txq)) #define HARD_TX_UNLOCK(dev, txq) { \ - if ((dev->features & NETIF_F_LLTX) == 0) { \ + if (!(dev)->lltx) { \ __netif_tx_unlock(txq); \ } else { \ __netif_tx_release(txq); \ |