if the rx descriptor reports the rss hash, use it for the mbuf flowid.

ok jmatthew@

diff --git a/sys/dev/pci/if_ixl.c b/sys/dev/pci/if_ixl.c
index 9bd9011..10fe6a6 100644 (file)
--- a/sys/dev/pci/if_ixl.c
+++ b/sys/dev/pci/if_ixl.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_ixl.c,v 1.71 2020/12/22 06:55:16 dlg Exp $ */
+/*     $OpenBSD: if_ixl.c,v 1.72 2021/01/25 11:11:22 dlg Exp $ */
 
 /*
  * Copyright (c) 2013-2015, Intel Corporation
@@ -837,7 +837,8 @@ struct ixl_rx_rd_desc_32 {
 } __packed __aligned(16);
 
 struct ixl_rx_wb_desc_16 {
-       uint64_t                qword0;
+       uint32_t                _reserved1;
+       uint32_t                filter_status;
        uint64_t                qword1;
 #define IXL_RX_DESC_DD                 (1 << 0)
 #define IXL_RX_DESC_EOP                        (1 << 1)
@@ -3180,6 +3181,13 @@ ixl_rxeof(struct ixl_softc *sc, struct ixl_rx_ring *rxr)
                if (ISSET(word, IXL_RX_DESC_EOP)) {
                        if (!ISSET(word,
                            IXL_RX_DESC_RXE | IXL_RX_DESC_OVERSIZE)) {
+                               if ((word & IXL_RX_DESC_FLTSTAT_MASK) ==
+                                   IXL_RX_DESC_FLTSTAT_RSS) {
+                                       m->m_pkthdr.ph_flowid =
+                                           lemtoh32(&rxd->filter_status);
+                                       m->m_pkthdr.csum_flags |= M_FLOWID;
+                               }
+
                                ml_enqueue(&ml, m);
                        } else {
                                ifp->if_ierrors++; /* XXX */