1882 	zc->copybuf_len = err;  in receive_fallback_to_copy()
1883 	if (likely(zc->copybuf_len)) {  in receive_fallback_to_copy()
1923 				  s32 copybuf_len,  in tcp_zc_handle_leftover()  argument
1926 	u32 offset, copylen = min_t(u32, copybuf_len, zc->recv_skip_hint);  in tcp_zc_handle_leftover()
1941 	zc->copybuf_len = tcp_copy_straggler_data(zc, skb, copylen, &offset,  in tcp_zc_handle_leftover()
1943 	return zc->copybuf_len < 0 ? 0 : copylen;  in tcp_zc_handle_leftover()
2061 	s32 copybuf_len = zc->copybuf_len;  in tcp_zerocopy_receive()  local
2072 	zc->copybuf_len = 0;  in tcp_zerocopy_receive()
2083 	if (inq && inq <= copybuf_len)  in tcp_zerocopy_receive()
2176 		copylen = tcp_zc_handle_leftover(zc, sk, skb, &seq, copybuf_len, tss);  in tcp_zerocopy_receive()
4196 		case offsetofend(struct tcp_zerocopy_receive, copybuf_len):  in do_tcp_getsockopt()