tcp: bool conversions
bool conversions where possible. __inline__ -> inline space cleanups Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
David S. Miller
parent
e005d193d5
commit
a2a385d627
@ -263,14 +263,14 @@ extern int tcp_memory_pressure;
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* and worry about wraparound (automatic with unsigned arithmetic).
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*/
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static inline int before(__u32 seq1, __u32 seq2)
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static inline bool before(__u32 seq1, __u32 seq2)
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{
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return (__s32)(seq1-seq2) < 0;
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}
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#define after(seq2, seq1) before(seq1, seq2)
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/* is s2<=s1<=s3 ? */
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static inline int between(__u32 seq1, __u32 seq2, __u32 seq3)
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static inline bool between(__u32 seq1, __u32 seq2, __u32 seq3)
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{
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return seq3 - seq2 >= seq1 - seq2;
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}
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@ -305,7 +305,7 @@ static inline void tcp_synq_overflow(struct sock *sk)
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}
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/* syncookies: no recent synqueue overflow on this listening socket? */
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static inline int tcp_synq_no_recent_overflow(const struct sock *sk)
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static inline bool tcp_synq_no_recent_overflow(const struct sock *sk)
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{
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unsigned long last_overflow = tcp_sk(sk)->rx_opt.ts_recent_stamp;
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return time_after(jiffies, last_overflow + TCP_TIMEOUT_FALLBACK);
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@ -383,7 +383,7 @@ extern struct sock * tcp_check_req(struct sock *sk,struct sk_buff *skb,
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struct request_sock **prev);
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extern int tcp_child_process(struct sock *parent, struct sock *child,
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struct sk_buff *skb);
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extern int tcp_use_frto(struct sock *sk);
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extern bool tcp_use_frto(struct sock *sk);
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extern void tcp_enter_frto(struct sock *sk);
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extern void tcp_enter_loss(struct sock *sk, int how);
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extern void tcp_clear_retrans(struct tcp_sock *tp);
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@ -470,7 +470,7 @@ static inline __u32 cookie_v6_init_sequence(struct sock *sk,
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extern void __tcp_push_pending_frames(struct sock *sk, unsigned int cur_mss,
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int nonagle);
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extern int tcp_may_send_now(struct sock *sk);
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extern bool tcp_may_send_now(struct sock *sk);
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extern int tcp_retransmit_skb(struct sock *, struct sk_buff *);
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extern void tcp_retransmit_timer(struct sock *sk);
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extern void tcp_xmit_retransmit_queue(struct sock *);
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@ -484,9 +484,9 @@ extern int tcp_write_wakeup(struct sock *);
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extern void tcp_send_fin(struct sock *sk);
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extern void tcp_send_active_reset(struct sock *sk, gfp_t priority);
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extern int tcp_send_synack(struct sock *);
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extern int tcp_syn_flood_action(struct sock *sk,
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const struct sk_buff *skb,
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const char *proto);
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extern bool tcp_syn_flood_action(struct sock *sk,
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const struct sk_buff *skb,
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const char *proto);
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extern void tcp_push_one(struct sock *, unsigned int mss_now);
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extern void tcp_send_ack(struct sock *sk);
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extern void tcp_send_delayed_ack(struct sock *sk);
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@ -794,12 +794,12 @@ static inline int tcp_is_sack(const struct tcp_sock *tp)
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return tp->rx_opt.sack_ok;
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}
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static inline int tcp_is_reno(const struct tcp_sock *tp)
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static inline bool tcp_is_reno(const struct tcp_sock *tp)
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{
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return !tcp_is_sack(tp);
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}
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static inline int tcp_is_fack(const struct tcp_sock *tp)
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static inline bool tcp_is_fack(const struct tcp_sock *tp)
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{
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return tp->rx_opt.sack_ok & TCP_FACK_ENABLED;
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}
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@ -901,7 +901,7 @@ static inline u32 tcp_wnd_end(const struct tcp_sock *tp)
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{
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return tp->snd_una + tp->snd_wnd;
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}
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extern int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight);
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extern bool tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight);
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static inline void tcp_minshall_update(struct tcp_sock *tp, unsigned int mss,
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const struct sk_buff *skb)
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@ -944,7 +944,7 @@ static inline __sum16 __tcp_checksum_complete(struct sk_buff *skb)
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return __skb_checksum_complete(skb);
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}
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static inline int tcp_checksum_complete(struct sk_buff *skb)
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static inline bool tcp_checksum_complete(struct sk_buff *skb)
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{
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return !skb_csum_unnecessary(skb) &&
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__tcp_checksum_complete(skb);
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@ -974,12 +974,12 @@ static inline void tcp_prequeue_init(struct tcp_sock *tp)
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*
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* NOTE: is this not too big to inline?
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*/
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static inline int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
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static inline bool tcp_prequeue(struct sock *sk, struct sk_buff *skb)
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{
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struct tcp_sock *tp = tcp_sk(sk);
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if (sysctl_tcp_low_latency || !tp->ucopy.task)
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return 0;
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return false;
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__skb_queue_tail(&tp->ucopy.prequeue, skb);
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tp->ucopy.memory += skb->truesize;
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@ -1003,7 +1003,7 @@ static inline int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
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(3 * tcp_rto_min(sk)) / 4,
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TCP_RTO_MAX);
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}
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return 1;
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return true;
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}
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@ -1108,28 +1108,28 @@ static inline int tcp_fin_time(const struct sock *sk)
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return fin_timeout;
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}
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static inline int tcp_paws_check(const struct tcp_options_received *rx_opt,
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int paws_win)
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static inline bool tcp_paws_check(const struct tcp_options_received *rx_opt,
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int paws_win)
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{
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if ((s32)(rx_opt->ts_recent - rx_opt->rcv_tsval) <= paws_win)
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return 1;
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return true;
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if (unlikely(get_seconds() >= rx_opt->ts_recent_stamp + TCP_PAWS_24DAYS))
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return 1;
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return true;
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/*
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* Some OSes send SYN and SYNACK messages with tsval=0 tsecr=0,
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* then following tcp messages have valid values. Ignore 0 value,
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* or else 'negative' tsval might forbid us to accept their packets.
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*/
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if (!rx_opt->ts_recent)
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return 1;
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return 0;
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return true;
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return false;
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}
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static inline int tcp_paws_reject(const struct tcp_options_received *rx_opt,
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int rst)
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static inline bool tcp_paws_reject(const struct tcp_options_received *rx_opt,
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int rst)
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{
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if (tcp_paws_check(rx_opt, 0))
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return 0;
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return false;
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/* RST segments are not recommended to carry timestamp,
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and, if they do, it is recommended to ignore PAWS because
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@ -1144,8 +1144,8 @@ static inline int tcp_paws_reject(const struct tcp_options_received *rx_opt,
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However, we can relax time bounds for RST segments to MSL.
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*/
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if (rst && get_seconds() >= rx_opt->ts_recent_stamp + TCP_PAWS_MSL)
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return 0;
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return 1;
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return false;
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return true;
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}
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static inline void tcp_mib_init(struct net *net)
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@ -1383,7 +1383,7 @@ static inline void tcp_unlink_write_queue(struct sk_buff *skb, struct sock *sk)
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__skb_unlink(skb, &sk->sk_write_queue);
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}
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static inline int tcp_write_queue_empty(struct sock *sk)
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static inline bool tcp_write_queue_empty(struct sock *sk)
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{
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return skb_queue_empty(&sk->sk_write_queue);
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}
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@ -1440,7 +1440,7 @@ static inline void tcp_highest_sack_combine(struct sock *sk,
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/* Determines whether this is a thin stream (which may suffer from
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* increased latency). Used to trigger latency-reducing mechanisms.
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*/
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static inline unsigned int tcp_stream_is_thin(struct tcp_sock *tp)
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static inline bool tcp_stream_is_thin(struct tcp_sock *tp)
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{
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return tp->packets_out < 4 && !tcp_in_initial_slowstart(tp);
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}
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@ -593,7 +593,7 @@ static inline void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb)
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tp->pushed_seq = tp->write_seq;
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}
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static inline int forced_push(const struct tcp_sock *tp)
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static inline bool forced_push(const struct tcp_sock *tp)
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{
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return after(tp->write_seq, tp->pushed_seq + (tp->max_window >> 1));
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}
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@ -1082,7 +1082,7 @@ new_segment:
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if (err)
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goto do_fault;
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} else {
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int merge = 0;
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bool merge = false;
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int i = skb_shinfo(skb)->nr_frags;
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struct page *page = sk->sk_sndmsg_page;
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int off;
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@ -1096,7 +1096,7 @@ new_segment:
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off != PAGE_SIZE) {
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/* We can extend the last page
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* fragment. */
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merge = 1;
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merge = true;
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} else if (i == MAX_SKB_FRAGS || !sg) {
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/* Need to add new fragment and cannot
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* do this because interface is non-SG,
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@ -1293,7 +1293,7 @@ static int tcp_peek_sndq(struct sock *sk, struct msghdr *msg, int len)
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void tcp_cleanup_rbuf(struct sock *sk, int copied)
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{
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struct tcp_sock *tp = tcp_sk(sk);
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int time_to_ack = 0;
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bool time_to_ack = false;
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struct sk_buff *skb = skb_peek(&sk->sk_receive_queue);
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@ -1319,7 +1319,7 @@ void tcp_cleanup_rbuf(struct sock *sk, int copied)
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((icsk->icsk_ack.pending & ICSK_ACK_PUSHED) &&
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!icsk->icsk_ack.pingpong)) &&
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!atomic_read(&sk->sk_rmem_alloc)))
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time_to_ack = 1;
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time_to_ack = true;
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}
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/* We send an ACK if we can now advertise a non-zero window
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@ -1341,7 +1341,7 @@ void tcp_cleanup_rbuf(struct sock *sk, int copied)
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* "Lots" means "at least twice" here.
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*/
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if (new_window && new_window >= 2 * rcv_window_now)
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time_to_ack = 1;
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time_to_ack = true;
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}
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}
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if (time_to_ack)
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@ -2171,7 +2171,7 @@ EXPORT_SYMBOL(tcp_close);
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/* These states need RST on ABORT according to RFC793 */
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static inline int tcp_need_reset(int state)
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static inline bool tcp_need_reset(int state)
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{
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return (1 << state) &
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(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT | TCPF_FIN_WAIT1 |
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@ -2245,7 +2245,7 @@ int tcp_disconnect(struct sock *sk, int flags)
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}
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EXPORT_SYMBOL(tcp_disconnect);
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static inline int tcp_can_repair_sock(struct sock *sk)
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static inline bool tcp_can_repair_sock(const struct sock *sk)
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{
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return capable(CAP_NET_ADMIN) &&
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((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_ESTABLISHED));
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@ -3172,13 +3172,13 @@ out_free:
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struct tcp_md5sig_pool __percpu *tcp_alloc_md5sig_pool(struct sock *sk)
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{
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struct tcp_md5sig_pool __percpu *pool;
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int alloc = 0;
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bool alloc = false;
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retry:
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spin_lock_bh(&tcp_md5sig_pool_lock);
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pool = tcp_md5sig_pool;
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if (tcp_md5sig_users++ == 0) {
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alloc = 1;
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alloc = true;
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spin_unlock_bh(&tcp_md5sig_pool_lock);
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} else if (!pool) {
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tcp_md5sig_users--;
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@ -280,19 +280,19 @@ int tcp_set_congestion_control(struct sock *sk, const char *name)
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/* RFC2861 Check whether we are limited by application or congestion window
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* This is the inverse of cwnd check in tcp_tso_should_defer
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*/
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int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
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bool tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
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{
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const struct tcp_sock *tp = tcp_sk(sk);
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u32 left;
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if (in_flight >= tp->snd_cwnd)
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return 1;
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return true;
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left = tp->snd_cwnd - in_flight;
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if (sk_can_gso(sk) &&
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left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd &&
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left * tp->mss_cache < sk->sk_gso_max_size)
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return 1;
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return true;
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return left <= tcp_max_tso_deferred_mss(tp);
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}
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EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited);
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@ -15,7 +15,7 @@
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/* Tcp Hybla structure. */
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struct hybla {
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u8 hybla_en;
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bool hybla_en;
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u32 snd_cwnd_cents; /* Keeps increment values when it is <1, <<7 */
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u32 rho; /* Rho parameter, integer part */
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u32 rho2; /* Rho * Rho, integer part */
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@ -24,8 +24,7 @@ struct hybla {
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u32 minrtt; /* Minimum smoothed round trip time value seen */
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};
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/* Hybla reference round trip time (default= 1/40 sec = 25 ms),
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expressed in jiffies */
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/* Hybla reference round trip time (default= 1/40 sec = 25 ms), in ms */
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static int rtt0 = 25;
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module_param(rtt0, int, 0644);
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MODULE_PARM_DESC(rtt0, "reference rout trip time (ms)");
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@ -39,7 +38,7 @@ static inline void hybla_recalc_param (struct sock *sk)
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ca->rho_3ls = max_t(u32, tcp_sk(sk)->srtt / msecs_to_jiffies(rtt0), 8);
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ca->rho = ca->rho_3ls >> 3;
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ca->rho2_7ls = (ca->rho_3ls * ca->rho_3ls) << 1;
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ca->rho2 = ca->rho2_7ls >>7;
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ca->rho2 = ca->rho2_7ls >> 7;
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}
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static void hybla_init(struct sock *sk)
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@ -52,7 +51,7 @@ static void hybla_init(struct sock *sk)
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ca->rho_3ls = 0;
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ca->rho2_7ls = 0;
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ca->snd_cwnd_cents = 0;
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ca->hybla_en = 1;
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ca->hybla_en = true;
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tp->snd_cwnd = 2;
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tp->snd_cwnd_clamp = 65535;
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@ -67,6 +66,7 @@ static void hybla_init(struct sock *sk)
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static void hybla_state(struct sock *sk, u8 ca_state)
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{
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struct hybla *ca = inet_csk_ca(sk);
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ca->hybla_en = (ca_state == TCP_CA_Open);
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}
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@ -196,9 +196,10 @@ static void tcp_enter_quickack_mode(struct sock *sk)
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* and the session is not interactive.
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*/
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static inline int tcp_in_quickack_mode(const struct sock *sk)
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static inline bool tcp_in_quickack_mode(const struct sock *sk)
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{
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const struct inet_connection_sock *icsk = inet_csk(sk);
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return icsk->icsk_ack.quick && !icsk->icsk_ack.pingpong;
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}
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@ -253,11 +254,11 @@ static inline void TCP_ECN_rcv_syn(struct tcp_sock *tp, const struct tcphdr *th)
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tp->ecn_flags &= ~TCP_ECN_OK;
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}
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static inline int TCP_ECN_rcv_ecn_echo(const struct tcp_sock *tp, const struct tcphdr *th)
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static bool TCP_ECN_rcv_ecn_echo(const struct tcp_sock *tp, const struct tcphdr *th)
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{
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if (th->ece && !th->syn && (tp->ecn_flags & TCP_ECN_OK))
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return 1;
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return 0;
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return true;
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return false;
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}
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/* Buffer size and advertised window tuning.
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@ -1123,36 +1124,36 @@ static void tcp_skb_mark_lost_uncond_verify(struct tcp_sock *tp,
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* the exact amount is rather hard to quantify. However, tp->max_window can
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* be used as an exaggerated estimate.
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*/
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static int tcp_is_sackblock_valid(struct tcp_sock *tp, int is_dsack,
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u32 start_seq, u32 end_seq)
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static bool tcp_is_sackblock_valid(struct tcp_sock *tp, bool is_dsack,
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u32 start_seq, u32 end_seq)
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{
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/* Too far in future, or reversed (interpretation is ambiguous) */
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if (after(end_seq, tp->snd_nxt) || !before(start_seq, end_seq))
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return 0;
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return false;
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/* Nasty start_seq wrap-around check (see comments above) */
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if (!before(start_seq, tp->snd_nxt))
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return 0;
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return false;
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/* In outstanding window? ...This is valid exit for D-SACKs too.
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* start_seq == snd_una is non-sensical (see comments above)
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*/
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if (after(start_seq, tp->snd_una))
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return 1;
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return true;
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if (!is_dsack || !tp->undo_marker)
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return 0;
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return false;
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/* ...Then it's D-SACK, and must reside below snd_una completely */
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if (after(end_seq, tp->snd_una))
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return 0;
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return false;
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if (!before(start_seq, tp->undo_marker))
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return 1;
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return true;
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/* Too old */
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if (!after(end_seq, tp->undo_marker))
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return 0;
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return false;
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/* Undo_marker boundary crossing (overestimates a lot). Known already:
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* start_seq < undo_marker and end_seq >= undo_marker.
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@ -1224,17 +1225,17 @@ static void tcp_mark_lost_retrans(struct sock *sk)
|
||||
tp->lost_retrans_low = new_low_seq;
|
||||
}
|
||||
|
||||
static int tcp_check_dsack(struct sock *sk, const struct sk_buff *ack_skb,
|
||||
struct tcp_sack_block_wire *sp, int num_sacks,
|
||||
u32 prior_snd_una)
|
||||
static bool tcp_check_dsack(struct sock *sk, const struct sk_buff *ack_skb,
|
||||
struct tcp_sack_block_wire *sp, int num_sacks,
|
||||
u32 prior_snd_una)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
u32 start_seq_0 = get_unaligned_be32(&sp[0].start_seq);
|
||||
u32 end_seq_0 = get_unaligned_be32(&sp[0].end_seq);
|
||||
int dup_sack = 0;
|
||||
bool dup_sack = false;
|
||||
|
||||
if (before(start_seq_0, TCP_SKB_CB(ack_skb)->ack_seq)) {
|
||||
dup_sack = 1;
|
||||
dup_sack = true;
|
||||
tcp_dsack_seen(tp);
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPDSACKRECV);
|
||||
} else if (num_sacks > 1) {
|
||||
@ -1243,7 +1244,7 @@ static int tcp_check_dsack(struct sock *sk, const struct sk_buff *ack_skb,
|
||||
|
||||
if (!after(end_seq_0, end_seq_1) &&
|
||||
!before(start_seq_0, start_seq_1)) {
|
||||
dup_sack = 1;
|
||||
dup_sack = true;
|
||||
tcp_dsack_seen(tp);
|
||||
NET_INC_STATS_BH(sock_net(sk),
|
||||
LINUX_MIB_TCPDSACKOFORECV);
|
||||
@ -1274,9 +1275,10 @@ struct tcp_sacktag_state {
|
||||
* FIXME: this could be merged to shift decision code
|
||||
*/
|
||||
static int tcp_match_skb_to_sack(struct sock *sk, struct sk_buff *skb,
|
||||
u32 start_seq, u32 end_seq)
|
||||
u32 start_seq, u32 end_seq)
|
||||
{
|
||||
int in_sack, err;
|
||||
int err;
|
||||
bool in_sack;
|
||||
unsigned int pkt_len;
|
||||
unsigned int mss;
|
||||
|
||||
@ -1322,7 +1324,7 @@ static int tcp_match_skb_to_sack(struct sock *sk, struct sk_buff *skb,
|
||||
static u8 tcp_sacktag_one(struct sock *sk,
|
||||
struct tcp_sacktag_state *state, u8 sacked,
|
||||
u32 start_seq, u32 end_seq,
|
||||
int dup_sack, int pcount)
|
||||
bool dup_sack, int pcount)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
int fack_count = state->fack_count;
|
||||
@ -1402,10 +1404,10 @@ static u8 tcp_sacktag_one(struct sock *sk,
|
||||
/* Shift newly-SACKed bytes from this skb to the immediately previous
|
||||
* already-SACKed sk_buff. Mark the newly-SACKed bytes as such.
|
||||
*/
|
||||
static int tcp_shifted_skb(struct sock *sk, struct sk_buff *skb,
|
||||
struct tcp_sacktag_state *state,
|
||||
unsigned int pcount, int shifted, int mss,
|
||||
int dup_sack)
|
||||
static bool tcp_shifted_skb(struct sock *sk, struct sk_buff *skb,
|
||||
struct tcp_sacktag_state *state,
|
||||
unsigned int pcount, int shifted, int mss,
|
||||
bool dup_sack)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
struct sk_buff *prev = tcp_write_queue_prev(sk, skb);
|
||||
@ -1455,7 +1457,7 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *skb,
|
||||
if (skb->len > 0) {
|
||||
BUG_ON(!tcp_skb_pcount(skb));
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SACKSHIFTED);
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Whole SKB was eaten :-) */
|
||||
@ -1478,7 +1480,7 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *skb,
|
||||
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SACKMERGED);
|
||||
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
/* I wish gso_size would have a bit more sane initialization than
|
||||
@ -1501,7 +1503,7 @@ static int skb_can_shift(const struct sk_buff *skb)
|
||||
static struct sk_buff *tcp_shift_skb_data(struct sock *sk, struct sk_buff *skb,
|
||||
struct tcp_sacktag_state *state,
|
||||
u32 start_seq, u32 end_seq,
|
||||
int dup_sack)
|
||||
bool dup_sack)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
struct sk_buff *prev;
|
||||
@ -1640,14 +1642,14 @@ static struct sk_buff *tcp_sacktag_walk(struct sk_buff *skb, struct sock *sk,
|
||||
struct tcp_sack_block *next_dup,
|
||||
struct tcp_sacktag_state *state,
|
||||
u32 start_seq, u32 end_seq,
|
||||
int dup_sack_in)
|
||||
bool dup_sack_in)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
struct sk_buff *tmp;
|
||||
|
||||
tcp_for_write_queue_from(skb, sk) {
|
||||
int in_sack = 0;
|
||||
int dup_sack = dup_sack_in;
|
||||
bool dup_sack = dup_sack_in;
|
||||
|
||||
if (skb == tcp_send_head(sk))
|
||||
break;
|
||||
@ -1662,7 +1664,7 @@ static struct sk_buff *tcp_sacktag_walk(struct sk_buff *skb, struct sock *sk,
|
||||
next_dup->start_seq,
|
||||
next_dup->end_seq);
|
||||
if (in_sack > 0)
|
||||
dup_sack = 1;
|
||||
dup_sack = true;
|
||||
}
|
||||
|
||||
/* skb reference here is a bit tricky to get right, since
|
||||
@ -1767,7 +1769,7 @@ tcp_sacktag_write_queue(struct sock *sk, const struct sk_buff *ack_skb,
|
||||
struct sk_buff *skb;
|
||||
int num_sacks = min(TCP_NUM_SACKS, (ptr[1] - TCPOLEN_SACK_BASE) >> 3);
|
||||
int used_sacks;
|
||||
int found_dup_sack = 0;
|
||||
bool found_dup_sack = false;
|
||||
int i, j;
|
||||
int first_sack_index;
|
||||
|
||||
@ -1798,7 +1800,7 @@ tcp_sacktag_write_queue(struct sock *sk, const struct sk_buff *ack_skb,
|
||||
used_sacks = 0;
|
||||
first_sack_index = 0;
|
||||
for (i = 0; i < num_sacks; i++) {
|
||||
int dup_sack = !i && found_dup_sack;
|
||||
bool dup_sack = !i && found_dup_sack;
|
||||
|
||||
sp[used_sacks].start_seq = get_unaligned_be32(&sp_wire[i].start_seq);
|
||||
sp[used_sacks].end_seq = get_unaligned_be32(&sp_wire[i].end_seq);
|
||||
@ -1865,7 +1867,7 @@ tcp_sacktag_write_queue(struct sock *sk, const struct sk_buff *ack_skb,
|
||||
while (i < used_sacks) {
|
||||
u32 start_seq = sp[i].start_seq;
|
||||
u32 end_seq = sp[i].end_seq;
|
||||
int dup_sack = (found_dup_sack && (i == first_sack_index));
|
||||
bool dup_sack = (found_dup_sack && (i == first_sack_index));
|
||||
struct tcp_sack_block *next_dup = NULL;
|
||||
|
||||
if (found_dup_sack && ((i + 1) == first_sack_index))
|
||||
@ -1967,9 +1969,9 @@ out:
|
||||
}
|
||||
|
||||
/* Limits sacked_out so that sum with lost_out isn't ever larger than
|
||||
* packets_out. Returns zero if sacked_out adjustement wasn't necessary.
|
||||
* packets_out. Returns false if sacked_out adjustement wasn't necessary.
|
||||
*/
|
||||
static int tcp_limit_reno_sacked(struct tcp_sock *tp)
|
||||
static bool tcp_limit_reno_sacked(struct tcp_sock *tp)
|
||||
{
|
||||
u32 holes;
|
||||
|
||||
@ -1978,9 +1980,9 @@ static int tcp_limit_reno_sacked(struct tcp_sock *tp)
|
||||
|
||||
if ((tp->sacked_out + holes) > tp->packets_out) {
|
||||
tp->sacked_out = tp->packets_out - holes;
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* If we receive more dupacks than we expected counting segments
|
||||
@ -2034,40 +2036,40 @@ static int tcp_is_sackfrto(const struct tcp_sock *tp)
|
||||
/* F-RTO can only be used if TCP has never retransmitted anything other than
|
||||
* head (SACK enhanced variant from Appendix B of RFC4138 is more robust here)
|
||||
*/
|
||||
int tcp_use_frto(struct sock *sk)
|
||||
bool tcp_use_frto(struct sock *sk)
|
||||
{
|
||||
const struct tcp_sock *tp = tcp_sk(sk);
|
||||
const struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
struct sk_buff *skb;
|
||||
|
||||
if (!sysctl_tcp_frto)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
/* MTU probe and F-RTO won't really play nicely along currently */
|
||||
if (icsk->icsk_mtup.probe_size)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
if (tcp_is_sackfrto(tp))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
/* Avoid expensive walking of rexmit queue if possible */
|
||||
if (tp->retrans_out > 1)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
skb = tcp_write_queue_head(sk);
|
||||
if (tcp_skb_is_last(sk, skb))
|
||||
return 1;
|
||||
return true;
|
||||
skb = tcp_write_queue_next(sk, skb); /* Skips head */
|
||||
tcp_for_write_queue_from(skb, sk) {
|
||||
if (skb == tcp_send_head(sk))
|
||||
break;
|
||||
if (TCP_SKB_CB(skb)->sacked & TCPCB_RETRANS)
|
||||
return 0;
|
||||
return false;
|
||||
/* Short-circuit when first non-SACKed skb has been checked */
|
||||
if (!(TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED))
|
||||
break;
|
||||
}
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
/* RTO occurred, but do not yet enter Loss state. Instead, defer RTO
|
||||
@ -2303,7 +2305,7 @@ void tcp_enter_loss(struct sock *sk, int how)
|
||||
*
|
||||
* Do processing similar to RTO timeout.
|
||||
*/
|
||||
static int tcp_check_sack_reneging(struct sock *sk, int flag)
|
||||
static bool tcp_check_sack_reneging(struct sock *sk, int flag)
|
||||
{
|
||||
if (flag & FLAG_SACK_RENEGING) {
|
||||
struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
@ -2314,9 +2316,9 @@ static int tcp_check_sack_reneging(struct sock *sk, int flag)
|
||||
tcp_retransmit_skb(sk, tcp_write_queue_head(sk));
|
||||
inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
|
||||
icsk->icsk_rto, TCP_RTO_MAX);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
static inline int tcp_fackets_out(const struct tcp_sock *tp)
|
||||
@ -2472,28 +2474,28 @@ static inline int tcp_head_timedout(const struct sock *sk)
|
||||
* Main question: may we further continue forward transmission
|
||||
* with the same cwnd?
|
||||
*/
|
||||
static int tcp_time_to_recover(struct sock *sk, int flag)
|
||||
static bool tcp_time_to_recover(struct sock *sk, int flag)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
__u32 packets_out;
|
||||
|
||||
/* Do not perform any recovery during F-RTO algorithm */
|
||||
if (tp->frto_counter)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
/* Trick#1: The loss is proven. */
|
||||
if (tp->lost_out)
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
/* Not-A-Trick#2 : Classic rule... */
|
||||
if (tcp_dupack_heuristics(tp) > tp->reordering)
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
/* Trick#3 : when we use RFC2988 timer restart, fast
|
||||
* retransmit can be triggered by timeout of queue head.
|
||||
*/
|
||||
if (tcp_is_fack(tp) && tcp_head_timedout(sk))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
/* Trick#4: It is still not OK... But will it be useful to delay
|
||||
* recovery more?
|
||||
@ -2505,7 +2507,7 @@ static int tcp_time_to_recover(struct sock *sk, int flag)
|
||||
/* We have nothing to send. This connection is limited
|
||||
* either by receiver window or by application.
|
||||
*/
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
/* If a thin stream is detected, retransmit after first
|
||||
@ -2516,7 +2518,7 @@ static int tcp_time_to_recover(struct sock *sk, int flag)
|
||||
if ((tp->thin_dupack || sysctl_tcp_thin_dupack) &&
|
||||
tcp_stream_is_thin(tp) && tcp_dupack_heuristics(tp) > 1 &&
|
||||
tcp_is_sack(tp) && !tcp_send_head(sk))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
/* Trick#6: TCP early retransmit, per RFC5827. To avoid spurious
|
||||
* retransmissions due to small network reorderings, we implement
|
||||
@ -2528,7 +2530,7 @@ static int tcp_time_to_recover(struct sock *sk, int flag)
|
||||
!tcp_may_send_now(sk))
|
||||
return !tcp_pause_early_retransmit(sk, flag);
|
||||
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* New heuristics: it is possible only after we switched to restart timer
|
||||
@ -2767,7 +2769,7 @@ static inline int tcp_may_undo(const struct tcp_sock *tp)
|
||||
}
|
||||
|
||||
/* People celebrate: "We love our President!" */
|
||||
static int tcp_try_undo_recovery(struct sock *sk)
|
||||
static bool tcp_try_undo_recovery(struct sock *sk)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
|
||||
@ -2792,10 +2794,10 @@ static int tcp_try_undo_recovery(struct sock *sk)
|
||||
* is ACKed. For Reno it is MUST to prevent false
|
||||
* fast retransmits (RFC2582). SACK TCP is safe. */
|
||||
tcp_moderate_cwnd(tp);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
tcp_set_ca_state(sk, TCP_CA_Open);
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Try to undo cwnd reduction, because D-SACKs acked all retransmitted data */
|
||||
@ -2825,19 +2827,19 @@ static void tcp_try_undo_dsack(struct sock *sk)
|
||||
* that successive retransmissions of a segment must not advance
|
||||
* retrans_stamp under any conditions.
|
||||
*/
|
||||
static int tcp_any_retrans_done(const struct sock *sk)
|
||||
static bool tcp_any_retrans_done(const struct sock *sk)
|
||||
{
|
||||
const struct tcp_sock *tp = tcp_sk(sk);
|
||||
struct sk_buff *skb;
|
||||
|
||||
if (tp->retrans_out)
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
skb = tcp_write_queue_head(sk);
|
||||
if (unlikely(skb && TCP_SKB_CB(skb)->sacked & TCPCB_EVER_RETRANS))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Undo during fast recovery after partial ACK. */
|
||||
@ -2871,7 +2873,7 @@ static int tcp_try_undo_partial(struct sock *sk, int acked)
|
||||
}
|
||||
|
||||
/* Undo during loss recovery after partial ACK. */
|
||||
static int tcp_try_undo_loss(struct sock *sk)
|
||||
static bool tcp_try_undo_loss(struct sock *sk)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
|
||||
@ -2893,9 +2895,9 @@ static int tcp_try_undo_loss(struct sock *sk)
|
||||
tp->undo_marker = 0;
|
||||
if (tcp_is_sack(tp))
|
||||
tcp_set_ca_state(sk, TCP_CA_Open);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
static inline void tcp_complete_cwr(struct sock *sk)
|
||||
@ -3370,7 +3372,7 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets,
|
||||
const struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
struct sk_buff *skb;
|
||||
u32 now = tcp_time_stamp;
|
||||
int fully_acked = 1;
|
||||
int fully_acked = true;
|
||||
int flag = 0;
|
||||
u32 pkts_acked = 0;
|
||||
u32 reord = tp->packets_out;
|
||||
@ -3394,7 +3396,7 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets,
|
||||
if (!acked_pcount)
|
||||
break;
|
||||
|
||||
fully_acked = 0;
|
||||
fully_acked = false;
|
||||
} else {
|
||||
acked_pcount = tcp_skb_pcount(skb);
|
||||
}
|
||||
@ -3673,7 +3675,7 @@ static void tcp_undo_spur_to_response(struct sock *sk, int flag)
|
||||
* to prove that the RTO is indeed spurious. It transfers the control
|
||||
* from F-RTO to the conventional RTO recovery
|
||||
*/
|
||||
static int tcp_process_frto(struct sock *sk, int flag)
|
||||
static bool tcp_process_frto(struct sock *sk, int flag)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
|
||||
@ -3689,7 +3691,7 @@ static int tcp_process_frto(struct sock *sk, int flag)
|
||||
|
||||
if (!before(tp->snd_una, tp->frto_highmark)) {
|
||||
tcp_enter_frto_loss(sk, (tp->frto_counter == 1 ? 2 : 3), flag);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
if (!tcp_is_sackfrto(tp)) {
|
||||
@ -3698,19 +3700,19 @@ static int tcp_process_frto(struct sock *sk, int flag)
|
||||
* data, winupdate
|
||||
*/
|
||||
if (!(flag & FLAG_ANY_PROGRESS) && (flag & FLAG_NOT_DUP))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
if (!(flag & FLAG_DATA_ACKED)) {
|
||||
tcp_enter_frto_loss(sk, (tp->frto_counter == 1 ? 0 : 3),
|
||||
flag);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
} else {
|
||||
if (!(flag & FLAG_DATA_ACKED) && (tp->frto_counter == 1)) {
|
||||
/* Prevent sending of new data. */
|
||||
tp->snd_cwnd = min(tp->snd_cwnd,
|
||||
tcp_packets_in_flight(tp));
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
if ((tp->frto_counter >= 2) &&
|
||||
@ -3720,10 +3722,10 @@ static int tcp_process_frto(struct sock *sk, int flag)
|
||||
/* RFC4138 shortcoming (see comment above) */
|
||||
if (!(flag & FLAG_FORWARD_PROGRESS) &&
|
||||
(flag & FLAG_NOT_DUP))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
tcp_enter_frto_loss(sk, 3, flag);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
@ -3735,7 +3737,7 @@ static int tcp_process_frto(struct sock *sk, int flag)
|
||||
if (!tcp_may_send_now(sk))
|
||||
tcp_enter_frto_loss(sk, 2, flag);
|
||||
|
||||
return 1;
|
||||
return true;
|
||||
} else {
|
||||
switch (sysctl_tcp_frto_response) {
|
||||
case 2:
|
||||
@ -3752,7 +3754,7 @@ static int tcp_process_frto(struct sock *sk, int flag)
|
||||
tp->undo_marker = 0;
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSPURIOUSRTOS);
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* This routine deals with incoming acks, but not outgoing ones. */
|
||||
@ -3770,7 +3772,7 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
|
||||
int prior_sacked = tp->sacked_out;
|
||||
int pkts_acked = 0;
|
||||
int newly_acked_sacked = 0;
|
||||
int frto_cwnd = 0;
|
||||
bool frto_cwnd = false;
|
||||
|
||||
/* If the ack is older than previous acks
|
||||
* then we can probably ignore it.
|
||||
@ -4025,7 +4027,7 @@ void tcp_parse_options(const struct sk_buff *skb, struct tcp_options_received *o
|
||||
}
|
||||
EXPORT_SYMBOL(tcp_parse_options);
|
||||
|
||||
static int tcp_parse_aligned_timestamp(struct tcp_sock *tp, const struct tcphdr *th)
|
||||
static bool tcp_parse_aligned_timestamp(struct tcp_sock *tp, const struct tcphdr *th)
|
||||
{
|
||||
const __be32 *ptr = (const __be32 *)(th + 1);
|
||||
|
||||
@ -4036,31 +4038,31 @@ static int tcp_parse_aligned_timestamp(struct tcp_sock *tp, const struct tcphdr
|
||||
tp->rx_opt.rcv_tsval = ntohl(*ptr);
|
||||
++ptr;
|
||||
tp->rx_opt.rcv_tsecr = ntohl(*ptr);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Fast parse options. This hopes to only see timestamps.
|
||||
* If it is wrong it falls back on tcp_parse_options().
|
||||
*/
|
||||
static int tcp_fast_parse_options(const struct sk_buff *skb,
|
||||
const struct tcphdr *th,
|
||||
struct tcp_sock *tp, const u8 **hvpp)
|
||||
static bool tcp_fast_parse_options(const struct sk_buff *skb,
|
||||
const struct tcphdr *th,
|
||||
struct tcp_sock *tp, const u8 **hvpp)
|
||||
{
|
||||
/* In the spirit of fast parsing, compare doff directly to constant
|
||||
* values. Because equality is used, short doff can be ignored here.
|
||||
*/
|
||||
if (th->doff == (sizeof(*th) / 4)) {
|
||||
tp->rx_opt.saw_tstamp = 0;
|
||||
return 0;
|
||||
return false;
|
||||
} else if (tp->rx_opt.tstamp_ok &&
|
||||
th->doff == ((sizeof(*th) + TCPOLEN_TSTAMP_ALIGNED) / 4)) {
|
||||
if (tcp_parse_aligned_timestamp(tp, th))
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
tcp_parse_options(skb, &tp->rx_opt, hvpp, 1);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_TCP_MD5SIG
|
||||
@ -4301,7 +4303,7 @@ static void tcp_fin(struct sock *sk)
|
||||
}
|
||||
}
|
||||
|
||||
static inline int tcp_sack_extend(struct tcp_sack_block *sp, u32 seq,
|
||||
static inline bool tcp_sack_extend(struct tcp_sack_block *sp, u32 seq,
|
||||
u32 end_seq)
|
||||
{
|
||||
if (!after(seq, sp->end_seq) && !after(sp->start_seq, end_seq)) {
|
||||
@ -4309,9 +4311,9 @@ static inline int tcp_sack_extend(struct tcp_sack_block *sp, u32 seq,
|
||||
sp->start_seq = seq;
|
||||
if (after(end_seq, sp->end_seq))
|
||||
sp->end_seq = end_seq;
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
static void tcp_dsack_set(struct sock *sk, u32 seq, u32 end_seq)
|
||||
@ -4507,7 +4509,7 @@ static void tcp_ofo_queue(struct sock *sk)
|
||||
}
|
||||
}
|
||||
|
||||
static int tcp_prune_ofo_queue(struct sock *sk);
|
||||
static bool tcp_prune_ofo_queue(struct sock *sk);
|
||||
static int tcp_prune_queue(struct sock *sk);
|
||||
|
||||
static int tcp_try_rmem_schedule(struct sock *sk, unsigned int size)
|
||||
@ -5092,10 +5094,10 @@ static void tcp_collapse_ofo_queue(struct sock *sk)
|
||||
* Purge the out-of-order queue.
|
||||
* Return true if queue was pruned.
|
||||
*/
|
||||
static int tcp_prune_ofo_queue(struct sock *sk)
|
||||
static bool tcp_prune_ofo_queue(struct sock *sk)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
int res = 0;
|
||||
bool res = false;
|
||||
|
||||
if (!skb_queue_empty(&tp->out_of_order_queue)) {
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_OFOPRUNED);
|
||||
@ -5109,7 +5111,7 @@ static int tcp_prune_ofo_queue(struct sock *sk)
|
||||
if (tp->rx_opt.sack_ok)
|
||||
tcp_sack_reset(&tp->rx_opt);
|
||||
sk_mem_reclaim(sk);
|
||||
res = 1;
|
||||
res = true;
|
||||
}
|
||||
return res;
|
||||
}
|
||||
@ -5186,7 +5188,7 @@ void tcp_cwnd_application_limited(struct sock *sk)
|
||||
tp->snd_cwnd_stamp = tcp_time_stamp;
|
||||
}
|
||||
|
||||
static int tcp_should_expand_sndbuf(const struct sock *sk)
|
||||
static bool tcp_should_expand_sndbuf(const struct sock *sk)
|
||||
{
|
||||
const struct tcp_sock *tp = tcp_sk(sk);
|
||||
|
||||
@ -5194,21 +5196,21 @@ static int tcp_should_expand_sndbuf(const struct sock *sk)
|
||||
* not modify it.
|
||||
*/
|
||||
if (sk->sk_userlocks & SOCK_SNDBUF_LOCK)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
/* If we are under global TCP memory pressure, do not expand. */
|
||||
if (sk_under_memory_pressure(sk))
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
/* If we are under soft global TCP memory pressure, do not expand. */
|
||||
if (sk_memory_allocated(sk) >= sk_prot_mem_limits(sk, 0))
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
/* If we filled the congestion window, do not expand. */
|
||||
if (tp->packets_out >= tp->snd_cwnd)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
/* When incoming ACK allowed to free some skb from write_queue,
|
||||
@ -5434,16 +5436,16 @@ static inline int tcp_checksum_complete_user(struct sock *sk,
|
||||
}
|
||||
|
||||
#ifdef CONFIG_NET_DMA
|
||||
static int tcp_dma_try_early_copy(struct sock *sk, struct sk_buff *skb,
|
||||
static bool tcp_dma_try_early_copy(struct sock *sk, struct sk_buff *skb,
|
||||
int hlen)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
int chunk = skb->len - hlen;
|
||||
int dma_cookie;
|
||||
int copied_early = 0;
|
||||
bool copied_early = false;
|
||||
|
||||
if (tp->ucopy.wakeup)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list)
|
||||
tp->ucopy.dma_chan = net_dma_find_channel();
|
||||
@ -5459,7 +5461,7 @@ static int tcp_dma_try_early_copy(struct sock *sk, struct sk_buff *skb,
|
||||
goto out;
|
||||
|
||||
tp->ucopy.dma_cookie = dma_cookie;
|
||||
copied_early = 1;
|
||||
copied_early = true;
|
||||
|
||||
tp->ucopy.len -= chunk;
|
||||
tp->copied_seq += chunk;
|
||||
|
||||
@ -866,14 +866,14 @@ static void tcp_v4_reqsk_destructor(struct request_sock *req)
|
||||
}
|
||||
|
||||
/*
|
||||
* Return 1 if a syncookie should be sent
|
||||
* Return true if a syncookie should be sent
|
||||
*/
|
||||
int tcp_syn_flood_action(struct sock *sk,
|
||||
bool tcp_syn_flood_action(struct sock *sk,
|
||||
const struct sk_buff *skb,
|
||||
const char *proto)
|
||||
{
|
||||
const char *msg = "Dropping request";
|
||||
int want_cookie = 0;
|
||||
bool want_cookie = false;
|
||||
struct listen_sock *lopt;
|
||||
|
||||
|
||||
@ -881,7 +881,7 @@ int tcp_syn_flood_action(struct sock *sk,
|
||||
#ifdef CONFIG_SYN_COOKIES
|
||||
if (sysctl_tcp_syncookies) {
|
||||
msg = "Sending cookies";
|
||||
want_cookie = 1;
|
||||
want_cookie = true;
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPREQQFULLDOCOOKIES);
|
||||
} else
|
||||
#endif
|
||||
@ -1196,7 +1196,7 @@ clear_hash_noput:
|
||||
}
|
||||
EXPORT_SYMBOL(tcp_v4_md5_hash_skb);
|
||||
|
||||
static int tcp_v4_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
|
||||
static bool tcp_v4_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
|
||||
{
|
||||
/*
|
||||
* This gets called for each TCP segment that arrives
|
||||
@ -1219,16 +1219,16 @@ static int tcp_v4_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
|
||||
|
||||
/* We've parsed the options - do we have a hash? */
|
||||
if (!hash_expected && !hash_location)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
if (hash_expected && !hash_location) {
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5NOTFOUND);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
if (!hash_expected && hash_location) {
|
||||
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5UNEXPECTED);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Okay, so this is hash_expected and hash_location -
|
||||
@ -1244,9 +1244,9 @@ static int tcp_v4_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
|
||||
&iph->daddr, ntohs(th->dest),
|
||||
genhash ? " tcp_v4_calc_md5_hash failed"
|
||||
: "");
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
#endif
|
||||
@ -1280,7 +1280,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
|
||||
__be32 saddr = ip_hdr(skb)->saddr;
|
||||
__be32 daddr = ip_hdr(skb)->daddr;
|
||||
__u32 isn = TCP_SKB_CB(skb)->when;
|
||||
int want_cookie = 0;
|
||||
bool want_cookie = false;
|
||||
|
||||
/* Never answer to SYNs send to broadcast or multicast */
|
||||
if (skb_rtable(skb)->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST))
|
||||
@ -1339,7 +1339,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
|
||||
while (l-- > 0)
|
||||
*c++ ^= *hash_location++;
|
||||
|
||||
want_cookie = 0; /* not our kind of cookie */
|
||||
want_cookie = false; /* not our kind of cookie */
|
||||
tmp_ext.cookie_out_never = 0; /* false */
|
||||
tmp_ext.cookie_plus = tmp_opt.cookie_plus;
|
||||
} else if (!tp->rx_opt.cookie_in_always) {
|
||||
@ -2073,7 +2073,7 @@ static void *listening_get_idx(struct seq_file *seq, loff_t *pos)
|
||||
return rc;
|
||||
}
|
||||
|
||||
static inline int empty_bucket(struct tcp_iter_state *st)
|
||||
static inline bool empty_bucket(struct tcp_iter_state *st)
|
||||
{
|
||||
return hlist_nulls_empty(&tcp_hashinfo.ehash[st->bucket].chain) &&
|
||||
hlist_nulls_empty(&tcp_hashinfo.ehash[st->bucket].twchain);
|
||||
|
||||
@ -55,7 +55,7 @@ EXPORT_SYMBOL_GPL(tcp_death_row);
|
||||
* state.
|
||||
*/
|
||||
|
||||
static int tcp_remember_stamp(struct sock *sk)
|
||||
static bool tcp_remember_stamp(struct sock *sk)
|
||||
{
|
||||
const struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
@ -72,13 +72,13 @@ static int tcp_remember_stamp(struct sock *sk)
|
||||
}
|
||||
if (release_it)
|
||||
inet_putpeer(peer);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
static int tcp_tw_remember_stamp(struct inet_timewait_sock *tw)
|
||||
static bool tcp_tw_remember_stamp(struct inet_timewait_sock *tw)
|
||||
{
|
||||
struct sock *sk = (struct sock *) tw;
|
||||
struct inet_peer *peer;
|
||||
@ -94,17 +94,17 @@ static int tcp_tw_remember_stamp(struct inet_timewait_sock *tw)
|
||||
peer->tcp_ts = tcptw->tw_ts_recent;
|
||||
}
|
||||
inet_putpeer(peer);
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
static __inline__ int tcp_in_window(u32 seq, u32 end_seq, u32 s_win, u32 e_win)
|
||||
static bool tcp_in_window(u32 seq, u32 end_seq, u32 s_win, u32 e_win)
|
||||
{
|
||||
if (seq == s_win)
|
||||
return 1;
|
||||
return true;
|
||||
if (after(end_seq, s_win) && before(seq, e_win))
|
||||
return 1;
|
||||
return true;
|
||||
return seq == e_win && seq == end_seq;
|
||||
}
|
||||
|
||||
@ -143,7 +143,7 @@ tcp_timewait_state_process(struct inet_timewait_sock *tw, struct sk_buff *skb,
|
||||
struct tcp_options_received tmp_opt;
|
||||
const u8 *hash_location;
|
||||
struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw);
|
||||
int paws_reject = 0;
|
||||
bool paws_reject = false;
|
||||
|
||||
tmp_opt.saw_tstamp = 0;
|
||||
if (th->doff > (sizeof(*th) >> 2) && tcptw->tw_ts_recent_stamp) {
|
||||
@ -316,7 +316,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
|
||||
struct inet_timewait_sock *tw = NULL;
|
||||
const struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
const struct tcp_sock *tp = tcp_sk(sk);
|
||||
int recycle_ok = 0;
|
||||
bool recycle_ok = false;
|
||||
|
||||
if (tcp_death_row.sysctl_tw_recycle && tp->rx_opt.ts_recent_stamp)
|
||||
recycle_ok = tcp_remember_stamp(sk);
|
||||
@ -575,7 +575,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
|
||||
struct sock *child;
|
||||
const struct tcphdr *th = tcp_hdr(skb);
|
||||
__be32 flg = tcp_flag_word(th) & (TCP_FLAG_RST|TCP_FLAG_SYN|TCP_FLAG_ACK);
|
||||
int paws_reject = 0;
|
||||
bool paws_reject = false;
|
||||
|
||||
tmp_opt.saw_tstamp = 0;
|
||||
if (th->doff > (sizeof(struct tcphdr)>>2)) {
|
||||
|
||||
@ -370,7 +370,7 @@ static void tcp_init_nondata_skb(struct sk_buff *skb, u32 seq, u8 flags)
|
||||
TCP_SKB_CB(skb)->end_seq = seq;
|
||||
}
|
||||
|
||||
static inline int tcp_urg_mode(const struct tcp_sock *tp)
|
||||
static inline bool tcp_urg_mode(const struct tcp_sock *tp)
|
||||
{
|
||||
return tp->snd_una != tp->snd_up;
|
||||
}
|
||||
@ -1391,20 +1391,20 @@ static int tcp_init_tso_segs(const struct sock *sk, struct sk_buff *skb,
|
||||
}
|
||||
|
||||
/* Minshall's variant of the Nagle send check. */
|
||||
static inline int tcp_minshall_check(const struct tcp_sock *tp)
|
||||
static inline bool tcp_minshall_check(const struct tcp_sock *tp)
|
||||
{
|
||||
return after(tp->snd_sml, tp->snd_una) &&
|
||||
!after(tp->snd_sml, tp->snd_nxt);
|
||||
}
|
||||
|
||||
/* Return 0, if packet can be sent now without violation Nagle's rules:
|
||||
/* Return false, if packet can be sent now without violation Nagle's rules:
|
||||
* 1. It is full sized.
|
||||
* 2. Or it contains FIN. (already checked by caller)
|
||||
* 3. Or TCP_CORK is not set, and TCP_NODELAY is set.
|
||||
* 4. Or TCP_CORK is not set, and all sent packets are ACKed.
|
||||
* With Minshall's modification: all sent small packets are ACKed.
|
||||
*/
|
||||
static inline int tcp_nagle_check(const struct tcp_sock *tp,
|
||||
static inline bool tcp_nagle_check(const struct tcp_sock *tp,
|
||||
const struct sk_buff *skb,
|
||||
unsigned int mss_now, int nonagle)
|
||||
{
|
||||
@ -1413,11 +1413,11 @@ static inline int tcp_nagle_check(const struct tcp_sock *tp,
|
||||
(!nonagle && tp->packets_out && tcp_minshall_check(tp)));
|
||||
}
|
||||
|
||||
/* Return non-zero if the Nagle test allows this packet to be
|
||||
/* Return true if the Nagle test allows this packet to be
|
||||
* sent now.
|
||||
*/
|
||||
static inline int tcp_nagle_test(const struct tcp_sock *tp, const struct sk_buff *skb,
|
||||
unsigned int cur_mss, int nonagle)
|
||||
static inline bool tcp_nagle_test(const struct tcp_sock *tp, const struct sk_buff *skb,
|
||||
unsigned int cur_mss, int nonagle)
|
||||
{
|
||||
/* Nagle rule does not apply to frames, which sit in the middle of the
|
||||
* write_queue (they have no chances to get new data).
|
||||
@ -1426,24 +1426,25 @@ static inline int tcp_nagle_test(const struct tcp_sock *tp, const struct sk_buff
|
||||
* argument based upon the location of SKB in the send queue.
|
||||
*/
|
||||
if (nonagle & TCP_NAGLE_PUSH)
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
/* Don't use the nagle rule for urgent data (or for the final FIN).
|
||||
* Nagle can be ignored during F-RTO too (see RFC4138).
|
||||
*/
|
||||
if (tcp_urg_mode(tp) || (tp->frto_counter == 2) ||
|
||||
(TCP_SKB_CB(skb)->tcp_flags & TCPHDR_FIN))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
if (!tcp_nagle_check(tp, skb, cur_mss, nonagle))
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Does at least the first segment of SKB fit into the send window? */
|
||||
static inline int tcp_snd_wnd_test(const struct tcp_sock *tp, const struct sk_buff *skb,
|
||||
unsigned int cur_mss)
|
||||
static bool tcp_snd_wnd_test(const struct tcp_sock *tp,
|
||||
const struct sk_buff *skb,
|
||||
unsigned int cur_mss)
|
||||
{
|
||||
u32 end_seq = TCP_SKB_CB(skb)->end_seq;
|
||||
|
||||
@ -1476,7 +1477,7 @@ static unsigned int tcp_snd_test(const struct sock *sk, struct sk_buff *skb,
|
||||
}
|
||||
|
||||
/* Test if sending is allowed right now. */
|
||||
int tcp_may_send_now(struct sock *sk)
|
||||
bool tcp_may_send_now(struct sock *sk)
|
||||
{
|
||||
const struct tcp_sock *tp = tcp_sk(sk);
|
||||
struct sk_buff *skb = tcp_send_head(sk);
|
||||
@ -1546,7 +1547,7 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len,
|
||||
*
|
||||
* This algorithm is from John Heffner.
|
||||
*/
|
||||
static int tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
|
||||
static bool tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
const struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
@ -1606,11 +1607,11 @@ static int tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
|
||||
/* Ok, it looks like it is advisable to defer. */
|
||||
tp->tso_deferred = 1 | (jiffies << 1);
|
||||
|
||||
return 1;
|
||||
return true;
|
||||
|
||||
send_now:
|
||||
tp->tso_deferred = 0;
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
/* Create a new MTU probe if we are ready.
|
||||
@ -1752,11 +1753,11 @@ static int tcp_mtu_probe(struct sock *sk)
|
||||
* snd_up-64k-mss .. snd_up cannot be large. However, taking into
|
||||
* account rare use of URG, this is not a big flaw.
|
||||
*
|
||||
* Returns 1, if no segments are in flight and we have queued segments, but
|
||||
* cannot send anything now because of SWS or another problem.
|
||||
* Returns true, if no segments are in flight and we have queued segments,
|
||||
* but cannot send anything now because of SWS or another problem.
|
||||
*/
|
||||
static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
|
||||
int push_one, gfp_t gfp)
|
||||
static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
|
||||
int push_one, gfp_t gfp)
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
struct sk_buff *skb;
|
||||
@ -1770,7 +1771,7 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
|
||||
/* Do MTU probing. */
|
||||
result = tcp_mtu_probe(sk);
|
||||
if (!result) {
|
||||
return 0;
|
||||
return false;
|
||||
} else if (result > 0) {
|
||||
sent_pkts = 1;
|
||||
}
|
||||
@ -1829,7 +1830,7 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
|
||||
|
||||
if (likely(sent_pkts)) {
|
||||
tcp_cwnd_validate(sk);
|
||||
return 0;
|
||||
return false;
|
||||
}
|
||||
return !tp->packets_out && tcp_send_head(sk);
|
||||
}
|
||||
@ -2028,22 +2029,22 @@ static void tcp_collapse_retrans(struct sock *sk, struct sk_buff *skb)
|
||||
}
|
||||
|
||||
/* Check if coalescing SKBs is legal. */
|
||||
static int tcp_can_collapse(const struct sock *sk, const struct sk_buff *skb)
|
||||
static bool tcp_can_collapse(const struct sock *sk, const struct sk_buff *skb)
|
||||
{
|
||||
if (tcp_skb_pcount(skb) > 1)
|
||||
return 0;
|
||||
return false;
|
||||
/* TODO: SACK collapsing could be used to remove this condition */
|
||||
if (skb_shinfo(skb)->nr_frags != 0)
|
||||
return 0;
|
||||
return false;
|
||||
if (skb_cloned(skb))
|
||||
return 0;
|
||||
return false;
|
||||
if (skb == tcp_send_head(sk))
|
||||
return 0;
|
||||
return false;
|
||||
/* Some heurestics for collapsing over SACK'd could be invented */
|
||||
if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Collapse packets in the retransmit queue to make to create
|
||||
@ -2054,7 +2055,7 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *to,
|
||||
{
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
struct sk_buff *skb = to, *tmp;
|
||||
int first = 1;
|
||||
bool first = true;
|
||||
|
||||
if (!sysctl_tcp_retrans_collapse)
|
||||
return;
|
||||
@ -2068,7 +2069,7 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *to,
|
||||
space -= skb->len;
|
||||
|
||||
if (first) {
|
||||
first = 0;
|
||||
first = false;
|
||||
continue;
|
||||
}
|
||||
|
||||
@ -2208,18 +2209,18 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
|
||||
/* Check if we forward retransmits are possible in the current
|
||||
* window/congestion state.
|
||||
*/
|
||||
static int tcp_can_forward_retransmit(struct sock *sk)
|
||||
static bool tcp_can_forward_retransmit(struct sock *sk)
|
||||
{
|
||||
const struct inet_connection_sock *icsk = inet_csk(sk);
|
||||
const struct tcp_sock *tp = tcp_sk(sk);
|
||||
|
||||
/* Forward retransmissions are possible only during Recovery. */
|
||||
if (icsk->icsk_ca_state != TCP_CA_Recovery)
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
/* No forward retransmissions in Reno are possible. */
|
||||
if (tcp_is_reno(tp))
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
/* Yeah, we have to make difficult choice between forward transmission
|
||||
* and retransmission... Both ways have their merits...
|
||||
@ -2230,9 +2231,9 @@ static int tcp_can_forward_retransmit(struct sock *sk)
|
||||
*/
|
||||
|
||||
if (tcp_may_send_now(sk))
|
||||
return 0;
|
||||
return false;
|
||||
|
||||
return 1;
|
||||
return true;
|
||||
}
|
||||
|
||||
/* This gets called after a retransmit timeout, and the initially
|
||||
|
||||
@ -1055,7 +1055,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
|
||||
struct tcp_sock *tp = tcp_sk(sk);
|
||||
__u32 isn = TCP_SKB_CB(skb)->when;
|
||||
struct dst_entry *dst = NULL;
|
||||
int want_cookie = 0;
|
||||
bool want_cookie = false;
|
||||
|
||||
if (skb->protocol == htons(ETH_P_IP))
|
||||
return tcp_v4_conn_request(sk, skb);
|
||||
@ -1116,7 +1116,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
|
||||
while (l-- > 0)
|
||||
*c++ ^= *hash_location++;
|
||||
|
||||
want_cookie = 0; /* not our kind of cookie */
|
||||
want_cookie = false; /* not our kind of cookie */
|
||||
tmp_ext.cookie_out_never = 0; /* false */
|
||||
tmp_ext.cookie_plus = tmp_opt.cookie_plus;
|
||||
} else if (!tp->rx_opt.cookie_in_always) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user