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authorPablo de Lara <pablo.de.lara.guarch@intel.com>2016-07-06 10:38:50 +0100
committerThomas Monjalon <thomas.monjalon@6wind.com>2016-07-11 17:21:21 +0200
commit268ca73585ea84207fc0505e0db1ab97099ffa07 (patch)
treedf33054be0eb28c83afacca803595e025e02ea15 /examples
parent516c26da83a322f4b9ce0f550c6d343c2cfc3ffb (diff)
downloaddpdk-268ca73585ea84207fc0505e0db1ab97099ffa07.zip
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examples/l2fwd-crypto: flush buffers
Crypto operations are enqueued in the crypto devices when the crypto device buffers are full (MAX_PKT_BURST), in order to be more efficient. The problem is that operations might be stuck in those buffers, if they never get full, and therefore, those operations will never be performed. Therefore, it is necessary to have a buffer flush mechanism, similar to the one used for flush the TX buffers, so eventually, all packets received are ciphered and sent out. Fixes: 387259bd6c67 ("examples/l2fwd-crypto: add sample application") Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Diffstat (limited to 'examples')
-rw-r--r--examples/l2fwd-crypto/main.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/examples/l2fwd-crypto/main.c b/examples/l2fwd-crypto/main.c
index 8dc616d..23b20b1 100644
--- a/examples/l2fwd-crypto/main.c
+++ b/examples/l2fwd-crypto/main.c
@@ -628,7 +628,7 @@ l2fwd_main_loop(struct l2fwd_crypto_options *options)
unsigned lcore_id = rte_lcore_id();
uint64_t prev_tsc = 0, diff_tsc, cur_tsc, timer_tsc = 0;
- unsigned i, j, portid, nb_rx;
+ unsigned i, j, portid, nb_rx, len;
struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
US_PER_S * BURST_TX_DRAIN_US;
@@ -727,10 +727,18 @@ l2fwd_main_loop(struct l2fwd_crypto_options *options)
cur_tsc = rte_rdtsc();
/*
- * TX burst queue drain
+ * Crypto device/TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
+ /* Enqueue all crypto ops remaining in buffers */
+ for (i = 0; i < qconf->nb_crypto_devs; i++) {
+ cparams = &port_cparams[i];
+ len = qconf->op_buf[cparams->dev_id].len;
+ l2fwd_crypto_send_burst(qconf, len, cparams);
+ qconf->op_buf[cparams->dev_id].len = 0;
+ }
+ /* Transmit all packets remaining in buffers */
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
if (qconf->pkt_buf[portid].len == 0)
continue;