[dpdk-dev] [PATCH v3 1/5] net/af_xdp: introduce AF XDP PMD driver
Stephen Hemminger
stephen at networkplumber.org
Thu Mar 21 16:24:15 CET 2019
On Thu, 21 Mar 2019 17:18:41 +0800
Xiaolong Ye <xiaolong.ye at intel.com> wrote:
> +
> +static inline int
> +reserve_fill_queue(struct xsk_umem_info *umem, int reserve_size)
> +{
> + struct xsk_ring_prod *fq = &umem->fq;
> + uint32_t idx;
> + void *addr = NULL;
> + int i, ret;
> +
> + ret = xsk_ring_prod__reserve(fq, reserve_size, &idx);
> + if (!ret) {
> + RTE_LOG(ERR, AF_XDP, "Failed to reserve enough fq descs.\n");
> + return ret;
> + }
> +
> + for (i = 0; i < reserve_size; i++) {
> + __u64 *fq_addr;
> + rte_ring_dequeue(umem->buf_ring, &addr);
You should check return value of dequeue, otherwise static checkers will
(rightly) complain that "everyone else checks return value of of rte_ring_dequeue()
why not here?"
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