ceph/src/seastar/dpdk/app/test-pmd/macswap.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Intel Corporation
   3  */
   4
   5 #ifndef _MACSWAP_H_
   6 #define _MACSWAP_H_
   7
   8 #include "macswap_common.h"
   9
  10 static inline void
  11 do_macswap(struct rte_mbuf *pkts[], uint16_t nb,
  12                 struct rte_port *txp)
  13 {
  14         struct ether_hdr *eth_hdr;
  15         struct rte_mbuf *mb;
  16         struct ether_addr addr;
  17         uint64_t ol_flags;
  18         int i;
  19
  20         ol_flags = ol_flags_init(txp->dev_conf.txmode.offloads);
  21         vlan_qinq_set(pkts, nb, ol_flags,
  22                         txp->tx_vlan_id, txp->tx_vlan_id_outer);
  23
  24         for (i = 0; i < nb; i++) {
  25                 if (likely(i < nb - 1))
  26                         rte_prefetch0(rte_pktmbuf_mtod(pkts[i+1], void *));
  27                 mb = pkts[i];
  28
  29                 eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
  30
  31                 /* Swap dest and src mac addresses. */
  32                 ether_addr_copy(&eth_hdr->d_addr, &addr);
  33                 ether_addr_copy(&eth_hdr->s_addr, &eth_hdr->d_addr);
  34                 ether_addr_copy(&addr, &eth_hdr->s_addr);
  35
  36                 mbuf_field_set(mb, ol_flags);
  37         }
  38 }
  39
  40 #endif /* _MACSWAP_H_ */