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Date: Fri, 22 Mar 2019 10:05:05 +0800
From: Ye Xiaolong <xiaolong.ye@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: dev@dpdk.org, Qi Zhang <qi.z.zhang@intel.com>,
 Karlsson Magnus <magnus.karlsson@intel.com>,
 Topel Bjorn <bjorn.topel@intel.com>
Message-ID: <20190322020505.GF84243@intel.com>
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 <20190321091845.78495-1-xiaolong.ye@intel.com>
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 <20190321082551.56907fa9@shemminger-XPS-13-9360>
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Subject: Re: [dpdk-dev] [PATCH v3 1/5] net/af_xdp: introduce AF XDP PMD
	driver
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On 03/21, Stephen Hemminger wrote:
>On Thu, 21 Mar 2019 17:18:41 +0800
>Xiaolong Ye <xiaolong.ye@intel.com> wrote:
>
>> +	for (i = 0; i < rcvd; i++) {
>> +		const struct xdp_desc *desc;
>> +		uint64_t addr;
>> +		uint32_t len;
>> +		void *pkt;
>> +
>> +		desc = xsk_ring_cons__rx_desc(rx, idx_rx++);
>> +		addr = desc->addr;
>> +		len = desc->len;
>> +		pkt = xsk_umem__get_data(rxq->umem->buffer, addr);
>> +
>> +		mbuf = rte_pktmbuf_alloc(rxq->mb_pool);
>
>You could use rte_pktmbuf_alloc_bulk to get the mbufs in one call
>before doing this. It saves rcvd-1 atomic operations.

Got it, will do.