[dpdk-dev] [PATCH v2] ether: use a default for max Rx frame size in configure()
Andriy Berestovskyy
Andriy.Berestovskyy at caviumnetworks.com
Fri Mar 24 12:52:05 CET 2017
At the moment rte_eth_dev_configure() behaves inconsistent:
- for normal frames: out of range max_rx_pkt_len uses a default
- for jumbo frames: out of range max_rx_pkt_len gives an error
This patch fixes this inconsistency by using a default value
for max_rx_pkt_len both for normal and jumbo frames.
Signed-off-by: Andriy Berestovskyy <Andriy.Berestovskyy at caviumnetworks.com>
---
Notes:
v2 changes:
- reword the commit title according to the check-git-log.sh
lib/librte_ether/rte_ethdev.c | 20 +++++---------------
lib/librte_ether/rte_ethdev.h | 6 +++++-
2 files changed, 10 insertions(+), 16 deletions(-)
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index eb0a94a..f560051 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -856,21 +856,11 @@ rte_eth_dev_configure(uint8_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
* length is supported by the configured device.
*/
if (dev_conf->rxmode.jumbo_frame == 1) {
- if (dev_conf->rxmode.max_rx_pkt_len >
- dev_info.max_rx_pktlen) {
- RTE_PMD_DEBUG_TRACE("ethdev port_id=%d max_rx_pkt_len %u"
- " > max valid value %u\n",
- port_id,
- (unsigned)dev_conf->rxmode.max_rx_pkt_len,
- (unsigned)dev_info.max_rx_pktlen);
- return -EINVAL;
- } else if (dev_conf->rxmode.max_rx_pkt_len < ETHER_MIN_LEN) {
- RTE_PMD_DEBUG_TRACE("ethdev port_id=%d max_rx_pkt_len %u"
- " < min valid value %u\n",
- port_id,
- (unsigned)dev_conf->rxmode.max_rx_pkt_len,
- (unsigned)ETHER_MIN_LEN);
- return -EINVAL;
+ if (dev_conf->rxmode.max_rx_pkt_len > dev_info.max_rx_pktlen ||
+ dev_conf->rxmode.max_rx_pkt_len < ETHER_MIN_LEN) {
+ /* Use maximum frame size the NIC supports */
+ dev->data->dev_conf.rxmode.max_rx_pkt_len =
+ dev_info.max_rx_pktlen;
}
} else {
if (dev_conf->rxmode.max_rx_pkt_len < ETHER_MIN_LEN ||
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 4be217c..2adfd77 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -349,7 +349,11 @@ enum rte_eth_tx_mq_mode {
struct rte_eth_rxmode {
/** The multi-queue packet distribution mode to be used, e.g. RSS. */
enum rte_eth_rx_mq_mode mq_mode;
- uint32_t max_rx_pkt_len; /**< Only used if jumbo_frame enabled. */
+ /**
+ * Desired maximum RX frame size. Too short or too long size will be
+ * substituted by a default value.
+ */
+ uint32_t max_rx_pkt_len;
uint16_t split_hdr_size; /**< hdr buf size (header_split enabled).*/
__extension__
uint16_t header_split : 1, /**< Header Split enable. */
--
2.7.4
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