net/af_xdp: fix creating multiple instance

Naming the buf_ring and umem memzone dynamically allows
to create multiple af_xdp vdevs.

Fixes: f1debd77efaf ("net/af_xdp: introduce AF_XDP PMD")

Reported-by: Markus Theil <markus.theil@tu-ilmenau.de>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>

diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c b/drivers/net/af_xdp/rte_eth_af_xdp.c
index 497e2cf..acf9ad6 100644 (file)
--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
@@ -473,7 +473,7 @@ xdp_umem_destroy(struct xsk_umem_info *umem)
 }
 
 static struct
-xsk_umem_info *xdp_umem_configure(void)
+xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals)
 {
        struct xsk_umem_info *umem;
        const struct rte_memzone *mz;
@@ -482,6 +482,8 @@ xsk_umem_info *xdp_umem_configure(void)
                .comp_size = ETH_AF_XDP_DFLT_NUM_DESCS,
                .frame_size = ETH_AF_XDP_FRAME_SIZE,
                .frame_headroom = ETH_AF_XDP_DATA_HEADROOM };
+       char ring_name[RTE_RING_NAMESIZE];
+       char mz_name[RTE_MEMZONE_NAMESIZE];
        int ret;
        uint64_t i;
 
@@ -491,7 +493,9 @@ xsk_umem_info *xdp_umem_configure(void)
                return NULL;
        }
 
-       umem->buf_ring = rte_ring_create("af_xdp_ring",
+       snprintf(ring_name, sizeof(ring_name), "af_xdp_ring_%s_%u",
+                      internals->if_name, internals->queue_idx);
+       umem->buf_ring = rte_ring_create(ring_name,
                                         ETH_AF_XDP_NUM_BUFFERS,
                                         rte_socket_id(),
                                         0x0);
@@ -505,7 +509,9 @@ xsk_umem_info *xdp_umem_configure(void)
                                 (void *)(i * ETH_AF_XDP_FRAME_SIZE +
                                          ETH_AF_XDP_DATA_HEADROOM));
 
-       mz = rte_memzone_reserve_aligned("af_xdp uemem",
+       snprintf(mz_name, sizeof(mz_name), "af_xdp_umem_%s_%u",
+                      internals->if_name, internals->queue_idx);
+       mz = rte_memzone_reserve_aligned(mz_name,
                        ETH_AF_XDP_NUM_BUFFERS * ETH_AF_XDP_FRAME_SIZE,
                        rte_socket_id(), RTE_MEMZONE_IOVA_CONTIG,
                        getpagesize());
@@ -541,7 +547,7 @@ xsk_configure(struct pmd_internals *internals, struct pkt_rx_queue *rxq,
        int ret = 0;
        int reserve_size;
 
-       rxq->umem = xdp_umem_configure();
+       rxq->umem = xdp_umem_configure(internals);
        if (rxq->umem == NULL)
                return -ENOMEM;