[dpdk-stable] patch 'ethdev: fix type and scope of variables in Rx burst' has been queued to stable release 18.02.2
luca.boccassi at gmail.com
luca.boccassi at gmail.com
Wed May 23 14:09:43 CEST 2018
Hi,
FYI, your patch has been queued to stable release 18.02.2
Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/25/18. So please
shout if anyone has objections.
Thanks.
Luca Boccassi
---
>From c09ee80e3258d36d8ac4304003f4c101ad73d9ad Mon Sep 17 00:00:00 2001
From: Andy Green <andy at warmcat.com>
Date: Tue, 22 May 2018 09:24:47 +0800
Subject: [PATCH] ethdev: fix type and scope of variables in Rx burst
[ upstream commit 3291abb5a2a5f24c109ab74e6aad0545927333a7 ]
GCC 8.1 warned:
In function 'rte_eth_rx_burst':
rte_ethdev.h:3836:18: warning: conversion to 'int16_t'
{aka 'short int'} from 'uint16_t' {aka 'short unsigned int'}
may change the sign of the result [-Wsign-conversion]
int16_t nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
^
rte_ethdev.h:3844:50: warning: conversion to 'uint16_t'
{aka 'short unsigned int'} from 'int16_t' {aka 'short int'}
may change the sign of the result [-Wsign-conversion]
nb_rx = cb->fn.rx(port_id, queue_id, rx_pkts, nb_rx,
^~~~~
rte_ethdev.h:3844:12: warning: conversion to 'int16_t'
{aka 'short int'} from 'uint16_t' {aka 'short unsigned int'}
may change the sign of the result [-Wsign-conversion]
nb_rx = cb->fn.rx(port_id, queue_id, rx_pkts, nb_rx,
^~
rte_ethdev.h:3851:9: warning: conversion to 'uint16_t'
{aka 'short unsigned int'} from 'int16_t' {aka 'short int'}
may change the sign of the result [-Wsign-conversion]
return nb_rx;
^~~~~
The second part of the patch is solved by its own basic
block because it is inside a preprocessor conditional.
Bringing the declaration of the var to the top of the
function would require that also being given its own
preprocessor conditional, or a (void)var to avoid an
unused var warning. The basic block is no worse than
those imho.
Fixes: 467465d86df1 ("ethdev: add packet count parameter to Rx callback")
Fixes: 4dc294158cac ("ethdev: support optional Rx and Tx callbacks")
Signed-off-by: Andy Green <andy at warmcat.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
lib/librte_ether/rte_ethdev.h | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 877c13cd2..822af90de 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -3624,6 +3624,7 @@ rte_eth_rx_burst(uint16_t port_id, uint16_t queue_id,
struct rte_mbuf **rx_pkts, const uint16_t nb_pkts)
{
struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+ uint16_t nb_rx;
#ifdef RTE_LIBRTE_ETHDEV_DEBUG
RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, 0);
@@ -3634,13 +3635,14 @@ rte_eth_rx_burst(uint16_t port_id, uint16_t queue_id,
return 0;
}
#endif
- int16_t nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
- rx_pkts, nb_pkts);
+ nb_rx = (*dev->rx_pkt_burst)(dev->data->rx_queues[queue_id],
+ rx_pkts, nb_pkts);
#ifdef RTE_ETHDEV_RXTX_CALLBACKS
- struct rte_eth_rxtx_callback *cb = dev->post_rx_burst_cbs[queue_id];
+ if (unlikely(dev->post_rx_burst_cbs[queue_id] != NULL)) {
+ struct rte_eth_rxtx_callback *cb =
+ dev->post_rx_burst_cbs[queue_id];
- if (unlikely(cb != NULL)) {
do {
nb_rx = cb->fn.rx(port_id, queue_id, rx_pkts, nb_rx,
nb_pkts, cb->param);
--
2.14.2
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