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author | Lukas Larsson <[email protected]> | 2018-12-10 10:40:29 +0100 |
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committer | Lukas Larsson <[email protected]> | 2019-02-18 20:33:52 +0100 |
commit | 615208dc834999db41d03e3259ebd6f8d1afeba1 (patch) | |
tree | 15cbbd80e87a7f727d034f4a2fed0e6fe2422e94 /erts/emulator/drivers/common/inet_drv.c | |
parent | 934f9974eb6bec43cd9445ec0f5019a4d1389428 (diff) | |
download | otp-615208dc834999db41d03e3259ebd6f8d1afeba1.tar.gz otp-615208dc834999db41d03e3259ebd6f8d1afeba1.tar.bz2 otp-615208dc834999db41d03e3259ebd6f8d1afeba1.zip |
erts: Only change inet buffer if not set
We only want to autoupdate update the buffer if recbuf
is set if the buffer has not been set before.
Diffstat (limited to 'erts/emulator/drivers/common/inet_drv.c')
-rw-r--r-- | erts/emulator/drivers/common/inet_drv.c | 87 |
1 files changed, 49 insertions, 38 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c index 31c9ce2d0b..2d2ef62bef 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) @@ -6748,16 +6767,6 @@ 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)) || @@ -6906,6 +6915,7 @@ 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 +7037,7 @@ 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: @@ -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) { |