4  * SPDX-License-Identifier: Apache-2.0
18 #define B_BETTER	  (-1)
19 #define B_BETTER_TOPOLOGY (-2)
21 static int btca_port_id_cmp(const struct ptp_port_id *p1, const struct ptp_port_id *p2)  in btca_port_id_cmp()
23 	int diff = memcmp(&p1->clk_id, &p2->clk_id, sizeof(p1->clk_id));  in btca_port_id_cmp()
26 		diff = p1->port_number - p2->port_number;  in btca_port_id_cmp()
32 static int btca_ds_cmp2(const struct ptp_dataset *a, const struct ptp_dataset *b)  in btca_ds_cmp2()  argument
34 	int diff;  in btca_ds_cmp2()
36 	if (b->steps_rm + 1 < a->steps_rm) {  in btca_ds_cmp2()
39 	if (a->steps_rm + 1 < b->steps_rm) {  in btca_ds_cmp2()
42 	if (a->steps_rm > b->steps_rm) {  in btca_ds_cmp2()
43 		diff = btca_port_id_cmp(&a->receiver, &a->sender);  in btca_ds_cmp2()
50 		/* error-1 */  in btca_ds_cmp2()
53 	if (a->steps_rm < b->steps_rm) {  in btca_ds_cmp2()
54 		diff = btca_port_id_cmp(&b->receiver, &b->sender);  in btca_ds_cmp2()
61 		/* error-1 */  in btca_ds_cmp2()
65 	diff = btca_port_id_cmp(&a->sender, &b->sender);  in btca_ds_cmp2()
73 	if (a->receiver.port_number > b->receiver.port_number) {  in btca_ds_cmp2()
76 	if (a->receiver.port_number > b->receiver.port_number) {  in btca_ds_cmp2()
79 	/* error-2 */  in btca_ds_cmp2()
83 int ptp_btca_ds_cmp(const struct ptp_dataset *a, const struct ptp_dataset *b)  in ptp_btca_ds_cmp()  argument
85 	if (a == b) {  in ptp_btca_ds_cmp()
88 	if (a && !b) {  in ptp_btca_ds_cmp()
91 	if (!a && b) {  in ptp_btca_ds_cmp()
95 	int id_diff = memcmp(&a->clk_id, &b->clk_id, sizeof(a->clk_id));  in ptp_btca_ds_cmp()
98 		return btca_ds_cmp2(a, b);  in ptp_btca_ds_cmp()
100 	if (a->priority1 > b->priority1) {  in ptp_btca_ds_cmp()
103 	if (a->clk_quality.cls > b->clk_quality.cls) {  in ptp_btca_ds_cmp()
106 	if (a->clk_quality.accuracy > b->clk_quality.accuracy) {  in ptp_btca_ds_cmp()
109 	if (a->clk_quality.offset_scaled_log_variance > b->clk_quality.offset_scaled_log_variance) {  in ptp_btca_ds_cmp()
112 	if (a->priority2 > b->priority2) {  in ptp_btca_ds_cmp()
132 	if (clk_default->clk_quality.cls <= 127) {  in ptp_btca_state_decision()
146 	if (clk_best_foreign->port == port) {  in ptp_btca_state_decision()