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reschedule acknack when suppressing ack or nack #1693

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reschedule acknack when suppressing ack or nack #1693

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5dd23ae
reschedule acknack when suppressing ack or nack
May 16, 2023
d019fc4
reschedule acknack when suppressing ack or nack
May 16, 2023
c64c21c
Merge branch 'update_acknack' of github.com:MarcelJordense/cyclonedds…
MarcelJordense May 23, 2023
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16 changes: 13 additions & 3 deletions src/core/ddsi/src/ddsi_acknack.c
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Original file line number Diff line number Diff line change
Expand Up @@ -231,7 +231,7 @@ static void add_acknack (struct ddsi_xmsg *msg, const struct ddsi_proxy_writer *
ddsi_security_encode_datareader_submsg (msg, sm_marker, pwr, &rwn->rd_guid);
}

static enum ddsi_add_acknack_result get_acknack_info (const struct ddsi_proxy_writer *pwr, const struct ddsi_pwr_rd_match *rwn, struct ddsi_last_nack_summary *nack_summary, struct ddsi_add_acknack_info *info, bool ackdelay_passed, bool nackdelay_passed)
static enum ddsi_add_acknack_result get_acknack_info (const struct ddsi_proxy_writer *pwr, const struct ddsi_pwr_rd_match *rwn, struct ddsi_last_nack_summary *nack_summary, struct ddsi_add_acknack_info *info, bool ackdelay_passed, bool nackdelay_passed, bool *reschedule)
{
/* If pwr->have_seen_heartbeat == 0, no heartbeat has been received
by this proxy writer yet, so we'll be sending a pre-emptive
Expand All @@ -250,6 +250,7 @@ static enum ddsi_add_acknack_result get_acknack_info (const struct ddsi_proxy_wr
nack_summary->seq_end_p1 = 0;
nack_summary->frag_base = 0;
nack_summary->frag_end_p1 = 0;
*reschedule = rwn->ack_requested;
result = AANR_ACK;
}
else
Expand All @@ -274,6 +275,7 @@ static enum ddsi_add_acknack_result get_acknack_info (const struct ddsi_proxy_wr
nack_summary->frag_end_p1 = frag_end_p1;
nack_summary->seq_base = seq_base;
nack_summary->frag_base = frag_base;
*reschedule = true;

// [seq_base:0 .. seq_end_p1:0) and [seq_end_p1:frag_base .. seq_end_p1:frag_end_p1) if frag_end_p1 > 0
if (seq_base > rwn->last_nack.seq_end_p1 || (seq_base == rwn->last_nack.seq_end_p1 && frag_base >= rwn->last_nack.frag_end_p1))
Expand Down Expand Up @@ -358,8 +360,9 @@ void ddsi_sched_acknack_if_needed (struct ddsi_xevent *ev, struct ddsi_proxy_wri
const bool nackdelay_passed = (tnow.v >= ddsrt_mtime_add_duration (rwn->t_last_nack, gv->config.nack_delay).v);
struct ddsi_add_acknack_info info;
struct ddsi_last_nack_summary nack_summary;
bool reschedule;
const enum ddsi_add_acknack_result aanr =
get_acknack_info (pwr, rwn, &nack_summary, &info, ackdelay_passed, nackdelay_passed);
get_acknack_info (pwr, rwn, &nack_summary, &info, ackdelay_passed, nackdelay_passed, &reschedule);
if (aanr == AANR_SUPPRESSED_ACK)
; // nothing to be done now
else if (avoid_suppressed_nack && aanr == AANR_SUPPRESSED_NACK)
Expand All @@ -373,15 +376,22 @@ static struct ddsi_xmsg *make_and_resched_acknack (struct ddsi_xevent *ev, struc
struct ddsi_domaingv * const gv = pwr->e.gv;
struct ddsi_xmsg *msg;
struct ddsi_add_acknack_info info;
bool reschedule;

struct ddsi_last_nack_summary nack_summary;
const enum ddsi_add_acknack_result aanr =
get_acknack_info (pwr, rwn, &nack_summary, &info,
tnow.v >= ddsrt_mtime_add_duration (rwn->t_last_ack, gv->config.ack_delay).v,
tnow.v >= ddsrt_mtime_add_duration (rwn->t_last_nack, gv->config.nack_delay).v);
tnow.v >= ddsrt_mtime_add_duration (rwn->t_last_nack, gv->config.nack_delay).v, &reschedule);

if (aanr == AANR_SUPPRESSED_ACK)
{
if (reschedule)
{
(void) ddsi_resched_xevent_if_earlier (ev, ddsrt_mtime_add_duration (rwn->t_last_nack, gv->config.nack_delay));
}
return NULL;
}
else if (avoid_suppressed_nack && aanr == AANR_SUPPRESSED_NACK)
{
(void) ddsi_resched_xevent_if_earlier (ev, ddsrt_mtime_add_duration (rwn->t_last_nack, gv->config.nack_delay));
Expand Down