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comparison netio.c @ 1047:e6c4cd0510d9 fastopen

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ignore any sendmsg() errors
author Matt Johnston <matt@ucc.asn.au>
date Thu, 26 Feb 2015 23:43:12 +0800
parents 8ed1d37e75a6
children 9cec9ed503bb
comparison
equal deleted inserted replaced
1035:8ed1d37e75a6 1047:e6c4cd0510d9
101 if (c->writequeue) { 101 if (c->writequeue) {
102 int iovlen; /* Linux msg_iovlen is a size_t */ 102 int iovlen; /* Linux msg_iovlen is a size_t */
103 message.msg_iov = packet_queue_to_iovec(c->writequeue, &iovlen); 103 message.msg_iov = packet_queue_to_iovec(c->writequeue, &iovlen);
104 message.msg_iovlen = iovlen; 104 message.msg_iovlen = iovlen;
105 res = sendmsg(c->sock, &message, MSG_FASTOPEN); 105 res = sendmsg(c->sock, &message, MSG_FASTOPEN);
106 if (res < 0 && errno == EOPNOTSUPP) { 106 if (res < 0) {
107 TRACE(("Fastopen not supported")); 107 /* Not entirely sure which kind of errors are normal - 2.6.32 seems to
108 return EPIPE for any (nonblocking?) sendmsg(). just fall back */
109 TRACE(("sendmsg tcp_fastopen failed, falling back. %s", strerror(errno)));
108 /* No kernel MSG_FASTOPEN support. Fall back below */ 110 /* No kernel MSG_FASTOPEN support. Fall back below */
109 fastopen = 0; 111 fastopen = 0;
110 /* Set to NULL to avoid trying again */ 112 /* Set to NULL to avoid trying again */
111 c->writequeue = NULL; 113 c->writequeue = NULL;
112 } 114 }