xdp: Make cpumap flush_list common for all map instances

The cpumap flush list is used to track entries that need to flushed from via the xdp_do_flush_map() function. This list used to be per-map, but there is really no reason for that. Instead make the flush list global for all devmaps, which simplifies __cpu_map_flush() and cpu_map_alloc().

Björn Töpel committed 6 years ago

Commit cdfafe91 parent 96360003 files · +21 −21Browse files

Showing the changes to include/linux (1 of 3 files). Show all

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include/linux/bpf.h+2−2

@@ -966,7 +966,7 @@ int dev_map_generic_redirect(struct bpf_dtab_netdev dst, struct sk_buff skb, · 965 unmodified lines
966	struct bpf_prog *xdp_prog);	966	struct bpf_prog *xdp_prog);
967		967
968	struct bpf_cpu_map_entry __cpu_map_lookup_elem(struct bpf_map map, u32 key);	968	struct bpf_cpu_map_entry __cpu_map_lookup_elem(struct bpf_map map, u32 key);
969	void __cpu_map_flush(struct bpf_map *map);	969	void __cpu_map_flush(void);
970	int cpu_map_enqueue(struct bpf_cpu_map_entry rcpu, struct xdp_buff xdp,	970	int cpu_map_enqueue(struct bpf_cpu_map_entry rcpu, struct xdp_buff xdp,
971	struct net_device *dev_rx);	971	struct net_device *dev_rx);
972		972
@@ -1097,7 +1097,7 @@ struct bpf_cpu_map_entry __cpu_map_lookup_elem(struct bpf_map map, u32 key) · 124 unmodified lines
1097	return NULL;	1097	return NULL;
1098	}	1098	}
1099		1099
1100	static inline void __cpu_map_flush(struct bpf_map *map)	1100	static inline void __cpu_map_flush(void)
1101	{	1101	{
1102	}	1102	}
1103		1103