cpu_map_build_skb

Name:cpu_map_build_skb

Proto:static struct sk_buff *cpu_map_build_skb(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf, struct sk_buff *skb)

Type:struct sk_buff

Parameter:

Type	Parameter	Name
struct bpf_cpu_map_entry *	rcpu
struct xdp_frame *	xdpf
struct sk_buff *	skb

172

hard_start_headroom = sizeof(structxdp_frame) + headroom

191

frame_size = SKB_DATA_ALIGN(len + hard_start_headroom) + SKB_DATA_ALIGN(sizeof(structskb_shared_info))

194

pkt_data_start = data - hard_start_headroom

195

skb = build_skb_around(skb, pkt_data_start, frame_size)

196

If Value for the false possibility is greater at compile time(!skb) Then Return NULL

199

skb_reserve - adjust headroom*@skb: buffer to alter*@len: bytes to move* Increase the headroom of an empty &sk_buff by reducing the tail* room. This is only allowed for an empty buffer.

200

__skb_put(skb, len)

201

If metasize Then skb_metadata_set(skb, metasize)

205

protocol = eth_type_trans(skb, used by cpumap )

214

xdp_release_frame(xdpf)

217

Clear kernel pointers in xdp_frame

219

Return skb

**Caller**
Name	Describe
cpu_map_kthread_run

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