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Protect against priority inversion for linux (#194) 

Set priority inheritance for mutex
pull/200/head
wanga 2018-08-08 00:00:30 +08:00 committed by nakarlsson
parent 5b2c51b65c
commit 2e165bee41
1 changed files with 6 additions and 3 deletions
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9
oshw/linux/nicdrv.c
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@ -95,6 +95,7 @@ int ecx_setupnic(ecx_portt *port, const char *ifname, int secondary)
struct ifreq ifr;
struct sockaddr_ll sll;
int *psock;
pthread_mutexattr_t mutexattr;
rval = 0;
if (secondary)
@ -123,9 +124,11 @@ int ecx_setupnic(ecx_portt *port, const char *ifname, int secondary)
}
else
{
pthread_mutex_init(&(port->getindex_mutex), NULL);
pthread_mutex_init(&(port->tx_mutex) , NULL);
pthread_mutex_init(&(port->rx_mutex) , NULL);
pthread_mutexattr_init(&mutexattr);
pthread_mutexattr_setprotocol(&mutexattr , PTHREAD_PRIO_INHERIT);
pthread_mutex_init(&(port->getindex_mutex), &mutexattr);
pthread_mutex_init(&(port->tx_mutex) , &mutexattr);
pthread_mutex_init(&(port->rx_mutex) , &mutexattr);
port->sockhandle = -1;
port->lastidx = 0;
port->redstate = ECT_RED_NONE;