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From: Andriy Berestovskyy <Andriy.Berestovskyy@caviumnetworks.com>
To: Konstantin Ananyev <konstantin.ananyev@intel.com>
Cc: dev@dpdk.org
Date: Mon, 10 Apr 2017 16:30:54 +0200
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Subject: [dpdk-dev] [PATCH 1/3] examples/ip_fragmentation: limit max frame
size
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Some PMDs do not support 9,5K jumbo frames, so the example fails.
Limit the frame size to the maximum supported by the underlying NIC.
Signed-off-by: Andriy Berestovskyy <Andriy.Berestovskyy@caviumnetworks.com>
---
examples/ip_fragmentation/main.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/examples/ip_fragmentation/main.c b/examples/ip_fragmentation/main.c
index 8d2ec43..31499c3 100644
--- a/examples/ip_fragmentation/main.c
+++ b/examples/ip_fragmentation/main.c
@@ -168,7 +168,7 @@ struct lcore_queue_conf {
} __rte_cache_aligned;
struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
-static const struct rte_eth_conf port_conf = {
+static struct rte_eth_conf port_conf = {
.rxmode = {
.max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
.split_hdr_size = 0,
@@ -915,6 +915,11 @@ main(int argc, char **argv)
qconf = &lcore_queue_conf[rx_lcore_id];
+ /* limit the frame size to the maximum supported by NIC */
+ rte_eth_dev_info_get(portid, &dev_info);
+ port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
+ dev_info.max_rx_pktlen, port_conf.rxmode.max_rx_pkt_len);
+
/* get the lcore_id for this port */
while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
@@ -980,7 +985,6 @@ main(int argc, char **argv)
printf("txq=%u,%d ", lcore_id, queueid);
fflush(stdout);
- rte_eth_dev_info_get(portid, &dev_info);
txconf = &dev_info.default_txconf;
txconf->txq_flags = 0;
ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
--
2.7.4