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xdp: add xdp_set_features_flag utility routine
Introduce xdp_set_features_flag utility routine in order to update dynamically xdp_features according to the dynamic hw configuration via ethtool (e.g. changing number of hw rx/tx queues). Add xdp_clear_features_flag() in order to clear all xdp_feature flag. Reviewed-by: Shay Agroskin <shayagr@amazon.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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bf51d27704
commit
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5 changed files with 35 additions and 7 deletions
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@ -9,6 +9,7 @@ definitions:
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-
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type: flags
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name: xdp-act
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render-max: true
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entries:
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-
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name: basic
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@ -428,12 +428,18 @@ MAX_XDP_METADATA_KFUNC,
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#ifdef CONFIG_NET
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u32 bpf_xdp_metadata_kfunc_id(int id);
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bool bpf_dev_bound_kfunc_id(u32 btf_id);
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void xdp_set_features_flag(struct net_device *dev, xdp_features_t val);
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void xdp_features_set_redirect_target(struct net_device *dev, bool support_sg);
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void xdp_features_clear_redirect_target(struct net_device *dev);
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#else
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static inline u32 bpf_xdp_metadata_kfunc_id(int id) { return 0; }
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static inline bool bpf_dev_bound_kfunc_id(u32 btf_id) { return false; }
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static inline void
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xdp_set_features_flag(struct net_device *dev, xdp_features_t val)
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{
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}
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static inline void
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xdp_features_set_redirect_target(struct net_device *dev, bool support_sg)
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{
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@ -445,4 +451,9 @@ xdp_features_clear_redirect_target(struct net_device *dev)
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}
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#endif
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static inline void xdp_clear_features_flag(struct net_device *dev)
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{
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xdp_set_features_flag(dev, 0);
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}
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#endif /* __LINUX_NET_XDP_H__ */
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@ -33,6 +33,8 @@ enum netdev_xdp_act {
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NETDEV_XDP_ACT_HW_OFFLOAD = 16,
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NETDEV_XDP_ACT_RX_SG = 32,
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NETDEV_XDP_ACT_NDO_XMIT_SG = 64,
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NETDEV_XDP_ACT_MASK = 127,
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};
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enum {
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@ -774,20 +774,32 @@ static int __init xdp_metadata_init(void)
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}
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late_initcall(xdp_metadata_init);
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void xdp_set_features_flag(struct net_device *dev, xdp_features_t val)
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{
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val &= NETDEV_XDP_ACT_MASK;
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if (dev->xdp_features == val)
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return;
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dev->xdp_features = val;
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call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev);
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}
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EXPORT_SYMBOL_GPL(xdp_set_features_flag);
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void xdp_features_set_redirect_target(struct net_device *dev, bool support_sg)
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{
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dev->xdp_features |= NETDEV_XDP_ACT_NDO_XMIT;
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if (support_sg)
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dev->xdp_features |= NETDEV_XDP_ACT_NDO_XMIT_SG;
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xdp_features_t val = (dev->xdp_features | NETDEV_XDP_ACT_NDO_XMIT);
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call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev);
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if (support_sg)
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val |= NETDEV_XDP_ACT_NDO_XMIT_SG;
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xdp_set_features_flag(dev, val);
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}
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EXPORT_SYMBOL_GPL(xdp_features_set_redirect_target);
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void xdp_features_clear_redirect_target(struct net_device *dev)
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{
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dev->xdp_features &= ~(NETDEV_XDP_ACT_NDO_XMIT |
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NETDEV_XDP_ACT_NDO_XMIT_SG);
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call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev);
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xdp_features_t val = dev->xdp_features;
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val &= ~(NETDEV_XDP_ACT_NDO_XMIT | NETDEV_XDP_ACT_NDO_XMIT_SG);
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xdp_set_features_flag(dev, val);
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}
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EXPORT_SYMBOL_GPL(xdp_features_clear_redirect_target);
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@ -33,6 +33,8 @@ enum netdev_xdp_act {
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NETDEV_XDP_ACT_HW_OFFLOAD = 16,
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NETDEV_XDP_ACT_RX_SG = 32,
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NETDEV_XDP_ACT_NDO_XMIT_SG = 64,
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NETDEV_XDP_ACT_MASK = 127,
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};
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enum {
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