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et/devif/devif_callback.c: devif_event_trigger shouldn't return true if triggers & DEVPOLL_MASK equal zero()

This commit is contained in:
Xiang Xiao 2019-11-24 10:11:19 -06:00 committed by Gregory Nutt
parent 9efadaefc1
commit cf9f2c56cb
2 changed files with 5 additions and 3 deletions
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6
include/nuttx/net/netconfig.h
View File

@ -533,7 +533,8 @@
# define MIN_TCP_MSS __MIN_TCP_MSS(__IPv6_HDRLEN) # define MIN_TCP_MSS __MIN_TCP_MSS(__IPv6_HDRLEN)
#endif #endif
/* How long a connection should stay in the TIME_WAIT state. /* How long a connection should stay in the TIME_WAIT state (in units of
* seconds).
* *
* TIME_WAIT is often also known as the 2MSL wait state. This is because * TIME_WAIT is often also known as the 2MSL wait state. This is because
* the socket that transitions to TIME_WAIT stays there for a period that * the socket that transitions to TIME_WAIT stays there for a period that
@ -542,7 +543,8 @@
* being discarded. This time limit is ultimately bounded by the TTL field * being discarded. This time limit is ultimately bounded by the TTL field
* in the IP datagram that is used to transmit the TCP segment. RFC 793 * in the IP datagram that is used to transmit the TCP segment. RFC 793
* specifies MSL as 2 minutes but most systems permit this value to be tuned. * specifies MSL as 2 minutes but most systems permit this value to be tuned.
* Here a default of 2 minutes is used, half the value specified by RFC 793. * Here a default TIME_WAIT (2MSL) 2 minutes is used, half the value
* specified by RFC 793.
*/ */
#ifdef CONFIG_NET_TCP_WAIT_TIMEOUT #ifdef CONFIG_NET_TCP_WAIT_TIMEOUT

2
net/devif/devif_callback.c
View File

@ -194,7 +194,7 @@ static bool devif_event_trigger(uint16_t events, uint16_t triggers)
if ((events & DEVPOLL_MASK) == (triggers & DEVPOLL_MASK)) if ((events & DEVPOLL_MASK) == (triggers & DEVPOLL_MASK))
{ {
return true; return (triggers & DEVPOLL_MASK) != 0;
} }
/* No.. this event set will not generate the callback */ /* No.. this event set will not generate the callback */