net/enic: fix packet loss after MTU change

[dpdk.git] / drivers / net / enic / enic_main.c

diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 40dbec7..7932605 100644 (file)
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -156,16 +156,17 @@ void enic_dev_stats_clear(struct enic *enic)
        enic_clear_soft_stats(enic);
 }
 
-void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
+int enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 {
        struct vnic_stats *stats;
        struct enic_soft_stats *soft_stats = &enic->soft_stats;
        int64_t rx_truncated;
        uint64_t rx_packet_errors;
+       int ret = vnic_dev_stats_dump(enic->vdev, &stats);
 
-       if (vnic_dev_stats_dump(enic->vdev, &stats)) {
+       if (ret) {
                dev_err(enic, "Error in getting stats\n");
-               return;
+               return ret;
        }
 
        /* The number of truncated packets can only be calculated by
@@ -191,6 +192,7 @@ void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
        r_stats->imissed = stats->rx.rx_no_bufs + rx_truncated;
 
        r_stats->rx_nombuf = rte_atomic64_read(&soft_stats->rx_nombuf);
+       return 0;
 }
 
 void enic_del_mac_address(struct enic *enic, int mac_index)
@@ -224,7 +226,7 @@ enic_free_rq_buf(struct rte_mbuf **mbuf)
                return;
 
        rte_pktmbuf_free(*mbuf);
-       mbuf = NULL;
+       *mbuf = NULL;
 }
 
 void enic_init_vnic_resources(struct enic *enic)
@@ -368,6 +370,7 @@ enic_alloc_consistent(void *priv, size_t size,
                pr_err("%s : Failed to allocate memory for memzone list\n",
                       __func__);
                rte_memzone_free(rz);
+               return NULL;
        }
 
        mze->rz = rz;
@@ -1116,11 +1119,12 @@ static int
 enic_reinit_rq(struct enic *enic, unsigned int rq_idx)
 {
        struct vnic_rq *sop_rq, *data_rq;
-       unsigned int cq_idx = enic_cq_rq(enic, rq_idx);
+       unsigned int cq_idx;
        int rc = 0;
 
        sop_rq = &enic->rq[enic_rte_rq_idx_to_sop_idx(rq_idx)];
        data_rq = &enic->rq[enic_rte_rq_idx_to_data_idx(rq_idx)];
+       cq_idx = rq_idx;
 
        vnic_cq_clean(&enic->cq[cq_idx]);
        vnic_cq_init(&enic->cq[cq_idx],
@@ -1180,6 +1184,9 @@ int enic_set_mtu(struct enic *enic, uint16_t new_mtu)
        old_mtu = eth_dev->data->mtu;
        config_mtu = enic->config.mtu;
 
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return -E_RTE_SECONDARY;
+
        if (new_mtu > enic->max_mtu) {
                dev_err(enic,
                        "MTU not updated: requested (%u) greater than max (%u)\n",
@@ -1331,6 +1338,10 @@ int enic_probe(struct enic *enic)
 
        dev_debug(enic, " Initializing ENIC PMD\n");
 
+       /* if this is a secondary process the hardware is already initialized */
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return 0;
+
        enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
        enic->bar0.len = pdev->mem_resource[0].len;