drivers/net/af_xdp/compat.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2020 Intel Corporation.
   3  */
   4
   5 #include <bpf/xsk.h>
   6 #include <linux/version.h>
   7
   8 #if KERNEL_VERSION(5, 10, 0) <= LINUX_VERSION_CODE && \
   9         defined(RTE_LIBRTE_AF_XDP_PMD_SHARED_UMEM)
  10 #define ETH_AF_XDP_SHARED_UMEM 1
  11 #endif
  12
  13 #ifdef ETH_AF_XDP_SHARED_UMEM
  14 static __rte_always_inline int
  15 create_shared_socket(struct xsk_socket **xsk_ptr,
  16                           const char *ifname,
  17                           __u32 queue_id, struct xsk_umem *umem,
  18                           struct xsk_ring_cons *rx,
  19                           struct xsk_ring_prod *tx,
  20                           struct xsk_ring_prod *fill,
  21                           struct xsk_ring_cons *comp,
  22                           const struct xsk_socket_config *config)
  23 {
  24         return xsk_socket__create_shared(xsk_ptr, ifname, queue_id, umem, rx,
  25                                                 tx, fill, comp, config);
  26 }
  27 #else
  28 static __rte_always_inline int
  29 create_shared_socket(struct xsk_socket **xsk_ptr __rte_unused,
  30                           const char *ifname __rte_unused,
  31                           __u32 queue_id __rte_unused,
  32                           struct xsk_umem *umem __rte_unused,
  33                           struct xsk_ring_cons *rx __rte_unused,
  34                           struct xsk_ring_prod *tx __rte_unused,
  35                           struct xsk_ring_prod *fill __rte_unused,
  36                           struct xsk_ring_cons *comp __rte_unused,
  37                           const struct xsk_socket_config *config __rte_unused)
  38 {
  39         return -1;
  40 }
  41 #endif
  42
  43 #ifdef XDP_USE_NEED_WAKEUP
  44 static int
  45 rx_syscall_needed(struct xsk_ring_prod *q, uint32_t busy_budget)
  46 {
  47         return xsk_ring_prod__needs_wakeup(q) | busy_budget;
  48 }
  49 static int
  50 tx_syscall_needed(struct xsk_ring_prod *q)
  51 {
  52         return xsk_ring_prod__needs_wakeup(q);
  53 }
  54 #else
  55 static int
  56 rx_syscall_needed(struct xsk_ring_prod *q __rte_unused, uint32_t busy_budget)
  57 {
  58         return busy_budget;
  59 }
  60 static int
  61 tx_syscall_needed(struct xsk_ring_prod *q __rte_unused)
  62 {
  63         return 1;
  64 }
  65 #endif