hi all:
In the
drivers/PF_RING_aware/non-ZC-drivers/intel/ixgbe/ixgbe-3.19.1/src/ixgbe_main.c
############################################
1881 static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
1882 struct ixgbe_ring *rx_ring,
1883 union ixgbe_adv_rx_desc *rx_desc,
1884 struct sk_buff *skb)
1885 {
1886 #ifdef CONFIG_NET_RX_BUSY_POLL
1887 skb_mark_napi_id(skb, &q_vector->napi);
1888
1889 if (ixgbe_qv_busy_polling(q_vector)) {
1890 netif_receive_skb(skb);
1891 /* exit early if we busy polled */
1892 return;
1893 }
1894 #endif
1895
1896 #ifndef IXGBE_NO_LRO
1897 if (ixgbe_can_lro(rx_ring, rx_desc, skb))
1898 ixgbe_lro_receive(q_vector, skb);
1899 else
1900 #endif
1901 #ifdef HAVE_PF_RING
1902 {
1903 int rc, debug = 0;
1904
1905 if((rc = pf_ring_handle_skb(q_vector, skb)) <= 0) {
1906 if(unlikely(debug)) printk("[IXGBE] Standard Linux
path [rc=%d]\n", rc);
1907 #endif
1908 #ifdef HAVE_VLAN_RX_REGISTER
1909 ixgbe_receive_skb(q_vector, skb);
1910 #else
1911 napi_gro_receive(&q_vector->napi, skb);
1912 #endif
1913 #ifdef HAVE_PF_RING
1914 } else {
1915 if(unlikely(debug)) printk("[ixgbe] pf_ring path
[rc=%d]\n", rc);
1916 }
1917 }
1918 #endif
############################################
I think the print messages in line 1906 maybe error, because the
"pf_ring_handle_skb" let the packet pass by PF_RING path not standard
linux path."rc" should represent the result of PF_RING path.
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