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annotate src/os/unix/ngx_sunpro_sparc64.il @ 7870:e169cce912c7 quic

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Avoid retransmitting of packets with discarded keys. Sections 4.10.1 and 4.10.2 of quic transport describe discarding of initial and handshake keys. Since the keys are discarded, we no longer need to retransmit packets and corresponding queues should be emptied. This patch removes previously added workaround that did not require acknowledgement for initial packets, resulting in avoiding retransmission, which is wrong because a packet could be lost and we have to retransmit it.
author Vladimir Homutov <vl@nginx.com>
date Mon, 18 May 2020 13:54:53 +0300
parents d620f497c50f
children
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1 /
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2 / Copyright (C) Igor Sysoev
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d620f497c50f Copyright updated.
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3 / Copyright (C) Nginx, Inc.
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7 / "casa [%o2] 0x80, %o1, %o0" and
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8 / "casxa [%o2] 0x80, %o1, %o0" do the following:
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10 / if ([%o2] == %o1) {
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11 / swap(%o0, [%o2]);
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12 / } else {
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13 / %o0 = [%o2];
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14 / }
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17 / ngx_atomic_uint_t ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old,
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18 / ngx_atomic_t *lock);
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19 /
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20 / the arguments are passed in the %o0, %o1, %o2
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21 / the result is returned in the %o0
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23 .inline ngx_casa,0
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24 casa [%o2] 0x80, %o1, %o0
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25 .end
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28 / ngx_atomic_uint_t ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old,
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29 / ngx_atomic_t *lock);
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30 /
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31 / the arguments are passed in the %o0, %o1, %o2
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32 / the result is returned in the %o0
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34 .inline ngx_casxa,0
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35 casxa [%o2] 0x80, %o1, %o0
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36 .end