Remove a useless variable from the file descriptor array data type.

It was a cute idea to have the raw Ethernet layer use just one socket,
but it ended up not working on some specific PTP time stamping hardware.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>

clock.c

@@ -275,7 +275,7 @@ void clock_install_fda(struct clock *c, struct port *p, struct fdarray fda)
 		if (p == c->port[i])
 			break;
 	}
-	for (j = 0; j < fda.cnt; j++) {
+	for (j = 0; j < N_POLLFD; j++) {
 		k = N_POLLFD * i + j;
 		c->pollfd[k].fd = fda.fd[j];
 		c->pollfd[k].events = POLLIN|POLLPRI;
@@ -375,7 +375,7 @@ void clock_remove_fda(struct clock *c, struct port *p, struct fdarray fda)
 		if (p == c->port[i])
 			break;
 	}
-	for (j = 0; j < fda.cnt; j++) {
+	for (j = 0; j < N_POLLFD; j++) {
 		k = N_POLLFD * i + j;
 		c->pollfd[k].fd = -1;
 		c->pollfd[k].events = 0;

fd.h

@@ -35,7 +35,6 @@ enum {
 
 struct fdarray {
 	int fd[N_POLLFD];
-	int cnt;
 };
 
 #endif

port.c

@@ -546,7 +546,6 @@ static int port_initialize(struct port *p)
 
 	for (i = 0; i < N_TIMER_FDS; i++) {
 		p->fda.fd[FD_ANNOUNCE_TIMER + i] = fd[i];
-		p->fda.cnt++;
 	}
 
 	if (port_set_announce_tmo(p))

raw.c

@@ -190,7 +190,6 @@ static int raw_open(struct transport *t, char *name,
 
 	fda->fd[FD_EVENT] = efd;
 	fda->fd[FD_GENERAL] = gfd;
-	fda->cnt = 2;
 	return 0;
 
 no_timestamping:

udp.c

@@ -149,7 +149,6 @@ static int udp_open(struct transport *t, char *name, struct fdarray *fda,
 
 	fda->fd[FD_EVENT] = efd;
 	fda->fd[FD_GENERAL] = gfd;
-	fda->cnt = 2;
 	return 0;
 
 no_timestamping: