1134 	int	flag;  member
1235 					state->flag |= FLAG_ORIG_SACK_ACKED;  in tcp_sacktag_one()
1253 		state->flag |= FLAG_DATA_SACKED;  in tcp_sacktag_one()
1653 	state.flag = 0;  in tcp_sacktag_write_queue()
1666 		state.flag |= FLAG_DSACKING_ACK;  in tcp_sacktag_write_queue()
1838 	return state.flag;  in tcp_sacktag_write_queue()
2003 static bool tcp_check_sack_reneging(struct sock *sk, int flag)  in tcp_check_sack_reneging()  argument
2005 	if (flag & FLAG_SACK_RENEGING) {  in tcp_check_sack_reneging()
2042 static bool tcp_pause_early_retransmit(struct sock *sk, int flag)  in tcp_pause_early_retransmit()  argument
2052 	    (flag & FLAG_ECE) || !tp->srtt_us)  in tcp_pause_early_retransmit()
2159 static bool tcp_time_to_recover(struct sock *sk, int flag)  in tcp_time_to_recover()  argument
2203 		return !tcp_pause_early_retransmit(sk, flag);  in tcp_time_to_recover()
2573 static void tcp_try_to_open(struct sock *sk, int flag, const int prior_unsacked)  in tcp_try_to_open()  argument
2582 	if (flag & FLAG_ECE)  in tcp_try_to_open()
2696 static void tcp_process_loss(struct sock *sk, int flag, bool is_dupack)  in tcp_process_loss()  argument
2701 	if ((flag & FLAG_SND_UNA_ADVANCED) &&  in tcp_process_loss()
2709 		if ((flag & FLAG_ORIG_SACK_ACKED) &&  in tcp_process_loss()
2714 			if (flag & FLAG_DATA_SACKED || is_dupack)  in tcp_process_loss()
2716 		} else if (flag & FLAG_SND_UNA_ADVANCED && !recovered) {  in tcp_process_loss()
2737 		else if (flag & FLAG_SND_UNA_ADVANCED)  in tcp_process_loss()
2790 				  bool is_dupack, int flag)  in tcp_fastretrans_alert()  argument
2794 	bool do_lost = is_dupack || ((flag & FLAG_DATA_SACKED) &&  in tcp_fastretrans_alert()
2805 	if (flag & FLAG_ECE)  in tcp_fastretrans_alert()
2809 	if (tcp_check_sack_reneging(sk, flag))  in tcp_fastretrans_alert()
2844 		if (!(flag & FLAG_SND_UNA_ADVANCED)) {  in tcp_fastretrans_alert()
2860 		tcp_process_loss(sk, flag, is_dupack);  in tcp_fastretrans_alert()
2866 			if (flag & FLAG_SND_UNA_ADVANCED)  in tcp_fastretrans_alert()
2875 		if (!tcp_time_to_recover(sk, flag)) {  in tcp_fastretrans_alert()
2876 			tcp_try_to_open(sk, flag, prior_unsacked);  in tcp_fastretrans_alert()
2892 		tcp_enter_recovery(sk, (flag & FLAG_ECE));  in tcp_fastretrans_alert()
2902 static inline bool tcp_ack_update_rtt(struct sock *sk, const int flag,  in tcp_ack_update_rtt()  argument
2912 	if (flag & FLAG_RETRANS_DATA_ACKED)  in tcp_ack_update_rtt()
2925 	    flag & FLAG_ACKED)  in tcp_ack_update_rtt()
3071 	int flag = 0;  in tcp_clean_rtx_queue()  local
3102 			flag |= FLAG_RETRANS_DATA_ACKED;  in tcp_clean_rtx_queue()
3111 				flag |= FLAG_ORIG_SACK_ACKED;  in tcp_clean_rtx_queue()
3130 			flag |= FLAG_DATA_ACKED;  in tcp_clean_rtx_queue()
3132 			flag |= FLAG_SYN_ACKED;  in tcp_clean_rtx_queue()
3151 		flag |= FLAG_SACK_RENEGING;  in tcp_clean_rtx_queue()
3159 	rtt_update = tcp_ack_update_rtt(sk, flag, seq_rtt_us, sack_rtt_us);  in tcp_clean_rtx_queue()
3161 	if (flag & FLAG_ACKED) {  in tcp_clean_rtx_queue()
3224 	return flag;  in tcp_clean_rtx_queue()
3248 static inline bool tcp_ack_is_dubious(const struct sock *sk, const int flag)  in tcp_ack_is_dubious()  argument
3250 	return !(flag & FLAG_NOT_DUP) || (flag & FLAG_CA_ALERT) ||  in tcp_ack_is_dubious()
3255 static inline bool tcp_may_raise_cwnd(const struct sock *sk, const int flag)  in tcp_may_raise_cwnd()  argument
3267 		return flag & FLAG_FORWARD_PROGRESS;  in tcp_may_raise_cwnd()
3269 	return flag & FLAG_DATA_ACKED;  in tcp_may_raise_cwnd()
3315 	int flag = 0;  in tcp_ack_update_window()  local
3322 		flag |= FLAG_WIN_UPDATE;  in tcp_ack_update_window()
3343 	return flag;  in tcp_ack_update_window()
3429 static void tcp_process_tlp_ack(struct sock *sk, u32 ack, int flag)  in tcp_process_tlp_ack()  argument
3436 	if (flag & FLAG_DSACKING_ACK) {  in tcp_process_tlp_ack()
3449 	} else if (!(flag & (FLAG_SND_UNA_ADVANCED |  in tcp_process_tlp_ack()
3465 static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)  in tcp_ack()  argument
3505 		flag |= FLAG_SND_UNA_ADVANCED;  in tcp_ack()
3514 	if (flag & FLAG_UPDATE_TS_RECENT)  in tcp_ack()
3517 	if (!(flag & FLAG_SLOWPATH) && after(ack, prior_snd_una)) {  in tcp_ack()
3524 		flag |= FLAG_WIN_UPDATE;  in tcp_ack()
3533 			flag |= FLAG_DATA;  in tcp_ack()
3537 		flag |= tcp_ack_update_window(sk, skb, ack, ack_seq);  in tcp_ack()
3540 			flag |= tcp_sacktag_write_queue(sk, skb, prior_snd_una,  in tcp_ack()
3544 			flag |= FLAG_ECE;  in tcp_ack()
3548 		if (flag & FLAG_WIN_UPDATE)  in tcp_ack()
3565 	flag |= tcp_clean_rtx_queue(sk, prior_fackets, prior_snd_una,  in tcp_ack()
3570 	if (tcp_may_raise_cwnd(sk, flag))  in tcp_ack()
3573 	if (tcp_ack_is_dubious(sk, flag)) {  in tcp_ack()
3574 		is_dupack = !(flag & (FLAG_SND_UNA_ADVANCED | FLAG_NOT_DUP));  in tcp_ack()
3576 				      is_dupack, flag);  in tcp_ack()
3579 		tcp_process_tlp_ack(sk, ack, flag);  in tcp_ack()
3581 	if ((flag & FLAG_FORWARD_PROGRESS) || !(flag & FLAG_NOT_DUP)) {  in tcp_ack()
3594 	if (flag & FLAG_DSACKING_ACK)  in tcp_ack()
3596 				      is_dupack, flag);  in tcp_ack()
3605 		tcp_process_tlp_ack(sk, ack, flag);  in tcp_ack()
3617 		flag |= tcp_sacktag_write_queue(sk, skb, prior_snd_una,  in tcp_ack()
3620 				      is_dupack, flag);  in tcp_ack()