If the timeout argument is non-zero, the return value is the number of
milliseconds spent waiting for the semaphore to be signaled. If the
semaphore wasn't signaled within the specified time, the return value is
- 0xffffffff. If the thread didn't have to wait for the semaphore (i.e., it
- was already signaled), the function may return zero.
+ SYS_ARCH_TIMEOUT. If the thread didn't have to wait for the semaphore
+ (i.e., it was already signaled), the function may return zero.
Notice that lwIP implements a function with a similar name,
sys_sem_wait(), that uses the sys_arch_sem_wait() function.
should be dropped.
The return values are the same as for the sys_arch_sem_wait() function:
- Number of milliseconds spent waitng or 0xffffffff if there was a timeout.
+ Number of milliseconds spent waiting or SYS_ARCH_TIMEOUT if there was a
+ timeout.
Note that a function with a similar name, sys_mbox_fetch(), is
implemented by lwIP.
if (conn->callback)
(*conn->callback)(conn, NETCONN_EVT_RCVMINUS, len);
- /* If we are closed, we indicate that we no longer wish to recieve
+ /* If we are closed, we indicate that we no longer wish to receive
data by setting conn->recvmbox to SYS_MBOX_NULL. */
if (p == NULL) {
memp_freep(MEMP_NETBUF, buf);
/* send ICMP destination protocol unreachable */
icmp_dest_unreach(p, ICMP_DUR_PROTO);
pbuf_free(p);
- DEBUGF(IP_DEBUG, ("Unsupported transportation protocol %u\n",
+ DEBUGF(IP_DEBUG, ("Unsupported transport protocol %u\n",
iphdr->nexthdr));
#ifdef IP_STATS
if (timeouts->next->time > 0) {
time = sys_arch_mbox_fetch(mbox, msg, timeouts->next->time);
} else {
- time = 0xffffffff;
+ time = SYS_ARCH_TIMEOUT;
}
- if (time == 0xffffffff) {
- /* If time == 0xffffffff, a timeout occured before a message could be
- fetched. We should now call the timeout handler and
+ if (time == SYS_ARCH_TIMEOUT) {
+ /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
+ could be fetched. We should now call the timeout handler and
deallocate the memory allocated for the timeout. */
tmptimeout = timeouts->next;
timeouts->next = tmptimeout->next;
/* We try again to fetch a message from the mbox. */
goto again;
} else {
- /* If time != 0xffffffff, a message was received before the timeout
+ /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
occured. The time variable is set to the number of
milliseconds we waited for the message. */
if (time <= timeouts->next->time) {
if (timeouts->next->time > 0) {
time = sys_arch_sem_wait(sem, timeouts->next->time);
} else {
- time = 0xffffffff;
+ time = SYS_ARCH_TIMEOUT;
}
- if (time == 0xffffffff) {
- /* If time == 0xffffffff, a timeout occured before a message could be
- fetched. We should now call the timeout handler and
+ if (time == SYS_ARCH_TIMEOUT) {
+ /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
+ could be fetched. We should now call the timeout handler and
deallocate the memory allocated for the timeout. */
tmptimeout = timeouts->next;
timeouts->next = tmptimeout->next;
/* We try again to fetch a message from the mbox. */
goto again;
} else {
- /* If time != 0xffffffff, a message was received before the timeout
+ /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
occured. The time variable is set to the number of
milliseconds we waited for the message. */
if (time <= timeouts->next->time) {
struct tcp_pcb *tcp_tmp_pcb;
-#define MIN(x,y) (x) < (y)? (x): (y)
+#define LWIP_MIN(x,y) (x) < (y)? (x): (y)
static u8_t tcp_timer;
}
tcp_rexmit(pcb);
/* Reduce congestion window and ssthresh. */
- eff_wnd = MIN(pcb->cwnd, pcb->snd_wnd);
+ eff_wnd = LWIP_MIN(pcb->cwnd, pcb->snd_wnd);
pcb->ssthresh = eff_wnd >> 1;
if (pcb->ssthresh < pcb->mss) {
pcb->ssthresh = pcb->mss * 2;
#include "lwip/stats.h"
#if LWIP_TCP
-#define MIN(x,y) (x) < (y)? (x): (y)
+#define LWIP_MIN(x,y) (x) < (y)? (x): (y)
return ERR_OK;
}
- wnd = MIN(pcb->snd_wnd, pcb->cwnd);
+ wnd = LWIP_MIN(pcb->snd_wnd, pcb->cwnd);
seg = pcb->unsent;
u16_t acked;
- u16_t snd_buf; /* Avaliable buffer space for sending (in bytes). */
- u8_t snd_queuelen; /* Avaliable buffer space for sending (in tcp_segs). */
+ u16_t snd_buf; /* Available buffer space for sending (in bytes). */
+ u8_t snd_queuelen; /* Available buffer space for sending (in tcp_segs). */
/* These are ordered by sequence number: */
extern struct tcp_pcb *tcp_tmp_pcb; /* Only used for temporary storage. */
-/* Axoims about the above lists:
+/* Axioms about the above lists:
1) Every TCP PCB that is not CLOSED is in one of the lists.
2) A PCB is only in one of the lists.
3) All PCBs in the tcp_listen_pcbs list is in LISTEN state.