70 static __always_inline int send_icmp4_too_big(struct xdp_md *xdp)  in send_icmp4_too_big()  argument
74 	if (bpf_xdp_adjust_head(xdp, 0 - headroom))  in send_icmp4_too_big()
76 	void *data = (void *)(long)xdp->data;  in send_icmp4_too_big()
77 	void *data_end = (void *)(long)xdp->data_end;  in send_icmp4_too_big()
120 static __always_inline int handle_ipv4(struct xdp_md *xdp)  in handle_ipv4()  argument
122 	void *data_end = (void *)(long)xdp->data_end;  in handle_ipv4()
123 	void *data = (void *)(long)xdp->data;  in handle_ipv4()
129 		if (bpf_xdp_adjust_tail(xdp, 0 - offset))  in handle_ipv4()
131 		return send_icmp4_too_big(xdp);  in handle_ipv4()
137 int _xdp_icmp(struct xdp_md *xdp)  in _xdp_icmp()  argument
139 	void *data_end = (void *)(long)xdp->data_end;  in _xdp_icmp()
140 	void *data = (void *)(long)xdp->data;  in _xdp_icmp()
150 		return handle_ipv4(xdp);  in _xdp_icmp()