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author | rodrigc <rodrigc@FreeBSD.org> | 2011-06-15 22:08:18 +0000 |
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committer | rodrigc <rodrigc@FreeBSD.org> | 2011-06-15 22:08:18 +0000 |
commit | 62ae73089f3deb0888395da5a9f0c6f1e1c4b811 (patch) | |
tree | 7a2ffef9e79f1d468f4833cb8f95b7787ac2053d | |
parent | d05f25ce84fa1850102baa6610eb2566f980b41c (diff) | |
download | FreeBSD-src-62ae73089f3deb0888395da5a9f0c6f1e1c4b811.zip FreeBSD-src-62ae73089f3deb0888395da5a9f0c6f1e1c4b811.tar.gz |
Currently tftp code in the loader retransmits the previous packet if it receives any
unwanted packet(non-tftp). Change this to retransmit the packet(request or ack) only after
a timeout.
Obtained from: Juniper Networks
Fixed by: Santhanakrishnan Balraj <sbalraj at juniper dot net>
-rw-r--r-- | lib/libstand/tftp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/libstand/tftp.c b/lib/libstand/tftp.c index 5cb8762..b8da31a 100644 --- a/lib/libstand/tftp.c +++ b/lib/libstand/tftp.c @@ -443,11 +443,15 @@ sendrecv_tftp(d, sproc, sbuf, ssize, rproc, rbuf, rsize) continue; } +recvnext: /* Try to get a packet and process it. */ cc = (*rproc)(d, rbuf, rsize, tleft); /* Return on data, EOF or real error. */ if (cc != -1 || errno != 0) return (cc); + if ((getsecs() - t1) < tleft) { + goto recvnext; + } /* Timed out or didn't get the packet we're waiting for */ tleft += MINTMO; |