[PATCH v3 12/13] net/nfp: nfdk packet xmit function

Thomas Monjalon thomas at monjalon.net
Wed Jun 22 18:03:43 CEST 2022


17/06/2022 11:34, Jin Liu:
> +		if (unlikely(pkt->nb_segs > 1 &&
> +				!(hw->cap & NFP_NET_CFG_CTRL_GATHER))) {
> +			PMD_INIT_LOG(INFO, "NFP_NET_CFG_CTRL_GATHER not set");
> +			rte_panic("Multisegment packet unsupported\n");
> +		}
[...]
> +		if (round_down(txq->wr_p, NFDK_TX_DESC_BLOCK_CNT) !=
> +			round_down(txq->wr_p + used_descs - 1, NFDK_TX_DESC_BLOCK_CNT)) {
> +			rte_panic("Used descs cross block boundary\n");
> +		}

You cannot use rte_panic in a driver or library.
It will make the user experience terrible.
If there is a failure, please log an error and return appropriately.

There is a check in the CI to avoid such use:
https://patches.dpdk.org/project/dpdk/patch/20220617093444.2004000-13-jin.liu@corigine.com/
https://mails.dpdk.org/archives/test-report/2022-June/290206.html

It seems you've ignored this critical warning.

I don't want to let new occurences of rte_panic enter in drivers,
so I'll drop this patch from the main branch.
Please re-submit without rte_panic.




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