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Diffstat (limited to 'erts/emulator/drivers/common/inet_drv.c')
-rw-r--r--erts/emulator/drivers/common/inet_drv.c113
1 files changed, 68 insertions, 45 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 31c9ce2d0b..49ce0c7600 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -574,7 +574,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
driver_select(port, e, mode | (on?ERL_DRV_USE:0), on)
#define sock_select(d, flags, onoff) do { \
- ASSERT(!(d)->is_ignored); \
+ ASSERT(!INET_IGNORED(d)); \
(d)->event_mask = (onoff) ? \
((d)->event_mask | (flags)) : \
((d)->event_mask & ~(flags)); \
@@ -894,6 +894,15 @@ static size_t my_strnlen(const char *s, size_t maxlen)
#define INET_CMSG_RECVTCLASS (1 << 1) /* am_recvtclass, am_tclass */
#define INET_CMSG_RECVTTL (1 << 2) /* am_recvttl, am_ttl */
+/* Inet flags */
+#define INET_FLG_BUFFER_SET (1 << 0) /* am_buffer has been set by user */
+#define INET_FLG_IS_IGNORED (1 << 1) /* If a fd is ignored by the inet_drv.
+ This flag should be set to true when
+ the fd is used outside of inet_drv. */
+#define INET_FLG_IS_IGNORED_RD (1 << 2)
+#define INET_FLG_IS_IGNORED_WR (1 << 3)
+#define INET_FLG_IS_IGNORED_PASS (1 << 4)
+
/*
** End of interface constants.
**--------------------------------------------------------------------------*/
@@ -939,10 +948,11 @@ static size_t my_strnlen(const char *s, size_t maxlen)
#define INET_IFNAMSIZ 16
/* INET Ignore states */
-#define INET_IGNORE_NONE 0
-#define INET_IGNORE_READ (1 << 0)
-#define INET_IGNORE_WRITE (1 << 1)
-#define INET_IGNORE_PASSIVE (1 << 2)
+#define INET_IGNORE_CLEAR(desc) ((desc)->flags & ~(INET_IGNORE_READ|INET_IGNORE_WRITE|INET_IGNORE_PASSIVE))
+#define INET_IGNORED(desc) ((desc)->flags & INET_FLG_IS_IGNORED)
+#define INET_IGNORE_READ (INET_FLG_IS_IGNORED|INET_FLG_IS_IGNORED_RD)
+#define INET_IGNORE_WRITE (INET_FLG_IS_IGNORED|INET_FLG_IS_IGNORED_WR)
+#define INET_IGNORE_PASSIVE (INET_FLG_IS_IGNORED|INET_FLG_IS_IGNORED_PASS)
/* Max length of Erlang Term Buffer (for outputting structured terms): */
#ifdef HAVE_SCTP
@@ -1124,9 +1134,7 @@ typedef struct {
double send_avg; /* average packet size sent */
subs_list empty_out_q_subs; /* Empty out queue subscribers */
- int is_ignored; /* if a fd is ignored by the inet_drv.
- This flag should be set to true when
- the fd is used outside of inet_drv. */
+ int flags;
#ifdef HAVE_SETNS
char *netns; /* Socket network namespace name
as full file path */
@@ -4547,7 +4555,7 @@ static void desc_close(inet_descriptor* desc)
* We should close the fd here, but the other driver might still
* be selecting on it.
*/
- if (!desc->is_ignored)
+ if (!INET_IGNORED(desc))
driver_select(desc->port,(ErlDrvEvent)(long)desc->event,
ERL_DRV_USE, 0);
else
@@ -6308,6 +6316,7 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
(long)desc->port, desc->s, ival));
if (ival < INET_MIN_BUFFER) ival = INET_MIN_BUFFER;
desc->bufsz = ival;
+ desc->flags |= INET_FLG_BUFFER_SET;
continue;
case INET_LOPT_ACTIVE:
@@ -6503,6 +6512,16 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
case INET_OPT_RCVBUF: type = SO_RCVBUF;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_RCVBUF=%d\r\n",
(long)desc->port, desc->s, ival));
+ if (!(desc->flags & INET_FLG_BUFFER_SET)) {
+ /* make sure we have desc->bufsz >= SO_RCVBUF */
+ if (ival > (1 << 16) && desc->stype == SOCK_DGRAM && !IS_SCTP(desc))
+ /* For UDP we don't want to automatically
+ set the buffer size to be larger than
+ the theoretical max MTU */
+ desc->bufsz = 1 << 16;
+ else if (ival > desc->bufsz)
+ desc->bufsz = ival;
+ }
break;
case INET_OPT_LINGER: type = SO_LINGER;
if (len < 4)
@@ -6748,23 +6767,17 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
}
DEBUGF(("inet_set_opts(%ld): s=%d returned %d\r\n",
(long)desc->port, desc->s, res));
- if (type == SO_RCVBUF) {
- /* make sure we have desc->bufsz >= SO_RCVBUF */
- if (ival > (1 << 16) && desc->stype == SOCK_DGRAM && !IS_SCTP(desc))
- /* For UDP we don't want to automatically
- set the buffer size to be larger than
- the theoretical max MTU */
- desc->bufsz = 1 << 16;
- else if (ival > desc->bufsz)
- desc->bufsz = ival;
- }
}
if ( ((desc->stype == SOCK_STREAM) && IS_CONNECTED(desc)) ||
((desc->stype == SOCK_DGRAM) && IS_OPEN(desc))) {
- if (desc->active != old_active)
+ if (desc->active != old_active) {
+ /* Need to cancel the read_packet timer if we go from active to passive. */
+ if (desc->active == INET_PASSIVE && desc->stype == SOCK_DGRAM)
+ driver_cancel_timer(desc->port);
sock_select(desc, (FD_READ|FD_CLOSE), (desc->active>0));
+ }
/* XXX: UDP sockets could also trigger immediate read here NIY */
if ((desc->stype==SOCK_STREAM) && desc->active) {
@@ -6906,6 +6919,7 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
if (desc->bufsz < INET_MIN_BUFFER)
desc->bufsz = INET_MIN_BUFFER;
+ desc->flags |= INET_FLG_BUFFER_SET;
res = 0; /* This does not affect the kernel buffer size */
continue;
@@ -7027,6 +7041,7 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
smaller than the kernel one: */
if (desc->bufsz <= arg.ival)
desc->bufsz = arg.ival;
+ desc->flags |= INET_FLG_BUFFER_SET;
break;
}
case INET_OPT_SNDBUF:
@@ -7037,10 +7052,6 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
- /* Adjust the size of the user-level recv buffer, so it's not
- smaller than the kernel one: */
- if (desc->bufsz <= arg.ival)
- desc->bufsz = arg.ival;
break;
}
case INET_OPT_REUSEADDR:
@@ -9097,7 +9108,7 @@ static ErlDrvData inet_start(ErlDrvPort port, int size, int protocol)
sys_memzero((char *)&desc->remote,sizeof(desc->remote));
- desc->is_ignored = 0;
+ desc->flags = 0;
#ifdef HAVE_SETNS
desc->netns = NULL;
@@ -9499,19 +9510,19 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
if (desc->stype != SOCK_STREAM)
return ctl_error(EINVAL, rbuf, rsize);
- if (*buf == 1 && !desc->is_ignored) {
+ if (*buf == 1 && !INET_IGNORED(desc)) {
sock_select(desc, (FD_READ|FD_WRITE|FD_CLOSE|ERL_DRV_USE_NO_CALLBACK), 0);
if (desc->active)
- desc->is_ignored = INET_IGNORE_READ;
+ desc->flags |= INET_IGNORE_READ;
else
- desc->is_ignored = INET_IGNORE_PASSIVE;
- } else if (*buf == 0 && desc->is_ignored) {
+ desc->flags |= INET_IGNORE_PASSIVE;
+ } else if (*buf == 0 && INET_IGNORED(desc)) {
int flags = FD_CLOSE;
- if (desc->is_ignored & INET_IGNORE_READ)
+ if (desc->flags & INET_IGNORE_READ)
flags |= FD_READ;
- if (desc->is_ignored & INET_IGNORE_WRITE)
+ if (desc->flags & INET_IGNORE_WRITE)
flags |= FD_WRITE;
- desc->is_ignored = INET_IGNORE_NONE;
+ desc->flags = INET_IGNORE_CLEAR(desc);
if (flags != FD_CLOSE)
sock_select(desc, flags, 1);
} else
@@ -10226,17 +10237,17 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
if (enq_async(INETP(desc), tbuf, TCP_REQ_RECV) < 0)
return ctl_error(EALREADY, rbuf, rsize);
- if (INETP(desc)->is_ignored || tcp_recv(desc, n) == 0) {
+ if (INET_IGNORED(INETP(desc)) || tcp_recv(desc, n) == 0) {
if (timeout == 0)
async_error_am(INETP(desc), am_timeout);
else {
if (timeout != INET_INFINITY)
add_multi_timer(desc, INETP(desc)->port, 0,
timeout, &tcp_inet_recv_timeout);
- if (!INETP(desc)->is_ignored)
+ if (!INET_IGNORED(INETP(desc)))
sock_select(INETP(desc),(FD_READ|FD_CLOSE),1);
else
- INETP(desc)->is_ignored |= INET_IGNORE_READ;
+ INETP(desc)->flags |= INET_IGNORE_READ;
}
}
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
@@ -11103,7 +11114,7 @@ static int tcp_inet_input(tcp_descriptor* desc, HANDLE event)
#ifdef DEBUG
long port = (long) desc->inet.port; /* Used after driver_exit() */
#endif
- ASSERT(!INETP(desc)->is_ignored);
+ ASSERT(!INET_IGNORED(INETP(desc)));
DEBUGF(("tcp_inet_input(%ld) {s=%d\r\n", port, desc->inet.s));
/* XXX fprintf(stderr,"tcp_inet_input(%ld) {s=%d}\r\n",(long) desc->inet.port, desc->inet.s); */
if (desc->inet.state == INET_STATE_ACCEPTING) {
@@ -11438,8 +11449,8 @@ static int tcp_sendv(tcp_descriptor* desc, ErlIOVec* ev)
DEBUGF(("tcp_sendv(%ld): s=%d, about to send "LLU","LLU" bytes\r\n",
(long)desc->inet.port, desc->inet.s, (llu_t)h_len, (llu_t)len));
- if (INETP(desc)->is_ignored) {
- INETP(desc)->is_ignored |= INET_IGNORE_WRITE;
+ if (INET_IGNORED(INETP(desc))) {
+ INETP(desc)->flags |= INET_IGNORE_WRITE;
n = 0;
} else if (desc->tcp_add_flags & TCP_ADDF_DELAY_SEND) {
driver_enqv(ix, ev, 0);
@@ -11474,7 +11485,7 @@ static int tcp_sendv(tcp_descriptor* desc, ErlIOVec* ev)
DEBUGF(("tcp_sendv(%ld): s=%d, Send failed, queuing\r\n",
(long)desc->inet.port, desc->inet.s));
driver_enqv(ix, ev, n);
- if (!INETP(desc)->is_ignored)
+ if (!INET_IGNORED(INETP(desc)))
sock_select(INETP(desc),(FD_WRITE|FD_CLOSE), 1);
}
return 0;
@@ -11543,8 +11554,8 @@ static int tcp_send(tcp_descriptor* desc, char* ptr, ErlDrvSizeT len)
DEBUGF(("tcp_send(%ld): s=%d, about to send "LLU","LLU" bytes\r\n",
(long)desc->inet.port, desc->inet.s, (llu_t)h_len, (llu_t)len));
- if (INETP(desc)->is_ignored) {
- INETP(desc)->is_ignored |= INET_IGNORE_WRITE;
+ if (INET_IGNORED(INETP(desc))) {
+ INETP(desc)->flags |= INET_IGNORE_WRITE;
n = 0;
} else if (desc->tcp_add_flags & TCP_ADDF_DELAY_SEND) {
sock_send(desc->inet.s, buf, 0, 0);
@@ -11577,7 +11588,7 @@ static int tcp_send(tcp_descriptor* desc, char* ptr, ErlDrvSizeT len)
n -= h_len;
driver_enq(ix, ptr+n, len-n);
}
- if (!INETP(desc)->is_ignored)
+ if (!INET_IGNORED(INETP(desc)))
sock_select(INETP(desc),(FD_WRITE|FD_CLOSE), 1);
}
return 0;
@@ -11858,7 +11869,7 @@ static int tcp_inet_output(tcp_descriptor* desc, HANDLE event)
int ret = 0;
ErlDrvPort ix = desc->inet.port;
- ASSERT(!INETP(desc)->is_ignored);
+ ASSERT(!INET_IGNORED(INETP(desc)));
DEBUGF(("tcp_inet_output(%ld) {s=%d\r\n",
(long)desc->inet.port, desc->inet.s));
if (desc->inet.state == INET_STATE_CONNECTING) {
@@ -12532,9 +12543,12 @@ static void packet_inet_timeout(ErlDrvData e)
{
udp_descriptor * udesc = (udp_descriptor*) e;
inet_descriptor * desc = INETP(udesc);
- if (!(desc->active))
+ if (!(desc->active)) {
sock_select(desc, FD_READ, 0);
- async_error_am (desc, am_timeout);
+ async_error_am (desc, am_timeout);
+ } else {
+ (void)packet_inet_input(udesc, desc->s);
+ }
}
@@ -12890,6 +12904,15 @@ static int packet_inet_input(udp_descriptor* udesc, HANDLE event)
sock_select(desc, FD_READ, 1);
}
#endif
+
+ /* We set a timer on the port to trigger now.
+ This emulates a "yield" operation as that is
+ what we want to do here. We do *NOT* do a deselect
+ as that is expensive, instead we check if the
+ socket it still active when the timeout triggers
+ and if it is not, then we just ignore the timeout */
+ driver_set_timer(desc->port, 0);
+
return count;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 07:11:55 +0000