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Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c214
1 files changed, 108 insertions, 106 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index eb97787be75..b961ef54b17 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -196,9 +196,10 @@ static void tcp_enter_quickack_mode(struct sock *sk)
* and the session is not interactive.
*/
-static inline int tcp_in_quickack_mode(const struct sock *sk)
+static inline bool tcp_in_quickack_mode(const struct sock *sk)
{
const struct inet_connection_sock *icsk = inet_csk(sk);
+
return icsk->icsk_ack.quick && !icsk->icsk_ack.pingpong;
}
@@ -253,11 +254,11 @@ static inline void TCP_ECN_rcv_syn(struct tcp_sock *tp, const struct tcphdr *th)
tp->ecn_flags &= ~TCP_ECN_OK;
}
-static inline int TCP_ECN_rcv_ecn_echo(const struct tcp_sock *tp, const struct tcphdr *th)
+static bool TCP_ECN_rcv_ecn_echo(const struct tcp_sock *tp, const struct tcphdr *th)
{
if (th->ece && !th->syn && (tp->ecn_flags & TCP_ECN_OK))
- return 1;
- return 0;
+ return true;
+ return false;
}
/* Buffer size and advertised window tuning.
@@ -1123,36 +1124,36 @@ static void tcp_skb_mark_lost_uncond_verify(struct tcp_sock *tp,
* the exact amount is rather hard to quantify. However, tp->max_window can
* be used as an exaggerated estimate.
*/
-static int tcp_is_sackblock_valid(struct tcp_sock *tp, int is_dsack,
- u32 start_seq, u32 end_seq)
+static bool tcp_is_sackblock_valid(struct tcp_sock *tp, bool is_dsack,
+ u32 start_seq, u32 end_seq)
{
/* Too far in future, or reversed (interpretation is ambiguous) */
if (after(end_seq, tp->snd_nxt) || !before(start_seq, end_seq))
- return 0;
+ return false;
/* Nasty start_seq wrap-around check (see comments above) */
if (!before(start_seq, tp->snd_nxt))
- return 0;
+ return false;
/* In outstanding window? ...This is valid exit for D-SACKs too.
* start_seq == snd_una is non-sensical (see comments above)
*/
if (after(start_seq, tp->snd_una))
- return 1;
+ return true;
if (!is_dsack || !tp->undo_marker)
- return 0;
+ return false;
/* ...Then it's D-SACK, and must reside below snd_una completely */
if (after(end_seq, tp->snd_una))
- return 0;
+ return false;
if (!before(start_seq, tp->undo_marker))
- return 1;
+ return true;
/* Too old */
if (!after(end_seq, tp->undo_marker))
- return 0;
+ return false;
/* Undo_marker boundary crossing (overestimates a lot). Known already:
* start_seq < undo_marker and end_seq >= undo_marker.
@@ -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;
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 12:30:13 +0000