ixgbe: setup xdp_rxq_info

Driver hook points for xdp_rxq_info:
 * reg  : ixgbe_setup_rx_resources()
 * unreg: ixgbe_free_rx_resources()

Tested on actual hardware.

V2: Fix ixgbe_set_ringparam, clear xdp_rxq_info in temp_ring

Cc: intel-wired-lan@lists.osuosl.org
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 468c355..8611763 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -53,6 +53,7 @@
 #include <linux/dca.h>
 #endif
 
+#include <net/xdp.h>
 #include <net/busy_poll.h>
 
 /* common prefix used by pr_<> macros */
@@ -371,6 +372,7 @@ struct ixgbe_ring {
                struct ixgbe_tx_queue_stats tx_stats;
                struct ixgbe_rx_queue_stats rx_stats;
        };
+       struct xdp_rxq_info xdp_rxq;
 } ____cacheline_internodealigned_in_smp;
 
 enum ixgbe_ring_f_enum {

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 0aad1c2..0aaf70b 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1156,6 +1156,10 @@ static int ixgbe_set_ringparam(struct net_device *netdev,
                        memcpy(&temp_ring[i], adapter->rx_ring[i],
                               sizeof(struct ixgbe_ring));
 
+                       /* Clear copied XDP RX-queue info */
+                       memset(&temp_ring[i].xdp_rxq, 0,
+                              sizeof(temp_ring[i].xdp_rxq));
+
                        temp_ring[i].count = new_rx_count;
                        err = ixgbe_setup_rx_resources(adapter, &temp_ring[i]);
                        if (err) {

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 7737a05..95aba97 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -2318,12 +2318,14 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
 #endif /* IXGBE_FCOE */
        u16 cleaned_count = ixgbe_desc_unused(rx_ring);
        bool xdp_xmit = false;
+       struct xdp_buff xdp;
+
+       xdp.rxq = &rx_ring->xdp_rxq;
 
        while (likely(total_rx_packets < budget)) {
                union ixgbe_adv_rx_desc *rx_desc;
                struct ixgbe_rx_buffer *rx_buffer;
                struct sk_buff *skb;
-               struct xdp_buff xdp;
                unsigned int size;
 
                /* return some buffers to hardware, one at a time is too slow */
@@ -6444,6 +6446,11 @@ int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
        rx_ring->next_to_clean = 0;
        rx_ring->next_to_use = 0;
 
+       /* XDP RX-queue info */
+       if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, adapter->netdev,
+                            rx_ring->queue_index) < 0)
+               goto err;
+
        rx_ring->xdp_prog = adapter->xdp_prog;
 
        return 0;
@@ -6541,6 +6548,7 @@ void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
        ixgbe_clean_rx_ring(rx_ring);
 
        rx_ring->xdp_prog = NULL;
+       xdp_rxq_info_unreg(&rx_ring->xdp_rxq);
        vfree(rx_ring->rx_buffer_info);
        rx_ring->rx_buffer_info = NULL;