net/sfc: validate Rx queue buffers setup

[dpdk.git] / drivers / net / sfc / sfc_rx.c

diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index 0a37776..a6b9aea 100644 (file)
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -172,6 +172,7 @@ sfc_rx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
             const struct rte_eth_rxconf *rx_conf,
             struct rte_mempool *mb_pool)
 {
+       const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
        int rc;
        uint16_t buf_size;
        struct sfc_rxq_info *rxq_info;
@@ -187,6 +188,19 @@ sfc_rx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
        if (buf_size == 0) {
                sfc_err(sa, "RxQ %u mbuf pool object size is too small",
                        sw_index);
+               rc = EINVAL;
+               goto fail_bad_conf;
+       }
+
+       if ((buf_size < sa->port.pdu + encp->enc_rx_prefix_size) &&
+           !sa->eth_dev->data->dev_conf.rxmode.enable_scatter) {
+               sfc_err(sa, "Rx scatter is disabled and RxQ %u mbuf pool "
+                       "object size is too small", sw_index);
+               sfc_err(sa, "RxQ %u calculated Rx buffer size is %u vs "
+                       "PDU size %u plus Rx prefix %u bytes",
+                       sw_index, buf_size, (unsigned int)sa->port.pdu,
+                       encp->enc_rx_prefix_size);
+               rc = EINVAL;
                goto fail_bad_conf;
        }