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examples/l3fwd: skip Tx queue drain on first FIB iteration

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The commit a8f8b672d5 ("examples/l3fwd: skip Tx queue drain on first iteration")
implemented a change to the EM and LPM lookup methods to
prevent the Tx queue drain running in the first iteration of their
packet processing loops.

This patch applies the same change into the new FIB lookup method.

Signed-off-by: Conor Walsh <conor.walsh@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
This commit is contained in:
Conor Walsh 2021-04-21 12:48:42 +00:00 committed by Thomas Monjalon
parent 5be3505717
commit 91470c0ddf
1 changed files with 5 additions and 4 deletions
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9
examples/l3fwd/l3fwd_fib.c
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@ -179,8 +179,6 @@ fib_main_loop(__rte_unused void *dummy)
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
US_PER_S * BURST_TX_DRAIN_US;
prev_tsc = 0;
lcore_id = rte_lcore_id();
qconf = &lcore_conf[lcore_id];
@ -200,9 +198,10 @@ fib_main_loop(__rte_unused void *dummy)
lcore_id, portid, queueid);
}
while (!force_quit) {
cur_tsc = rte_rdtsc();
prev_tsc = cur_tsc;
cur_tsc = rte_rdtsc();
while (!force_quit) {
/* TX burst queue drain. */
diff_tsc = cur_tsc - prev_tsc;
@ -233,6 +232,8 @@ fib_main_loop(__rte_unused void *dummy)
/* Use fib to lookup port IDs and transmit them. */
fib_send_packets(nb_rx, pkts_burst, portid, qconf);
}
cur_tsc = rte_rdtsc();
}
return 0;