ix(4): fix Rx hash type

[Kevin Lo]

Hi,

The diff below fixes Rx desc RSS type.  This matches what Linux and FreeBSD do.
ok?

Index: sys/dev/pci/if_ix.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/if_ix.c,v
retrieving revision 1.178
diff -u -p -u -p -r1.178 if_ix.c
--- sys/dev/pci/if_ix.c 22 Dec 2020 23:25:37 -0000      1.178
+++ sys/dev/pci/if_ix.c 14 Jul 2021 05:41:08 -0000
@@ -3071,7 +3071,8 @@ ixgbe_rxeof(struct rx_ring *rxr)
 
        i = rxr->next_to_check;
        while (if_rxr_inuse(&rxr->rx_ring) > 0) {
-               uint32_t hash, hashtype;
+               uint32_t hash;
+               uint16_t hashtype;
 
                bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map,
                    dsize * i, dsize, BUS_DMASYNC_POSTREAD);
@@ -3101,7 +3102,8 @@ ixgbe_rxeof(struct rx_ring *rxr)
                vtag = letoh16(rxdesc->wb.upper.vlan);
                eop = ((staterr & IXGBE_RXD_STAT_EOP) != 0);
                hash = lemtoh32(&rxdesc->wb.lower.hi_dword.rss);
-               hashtype = lemtoh32(&rxdesc->wb.lower.lo_dword.data) &
+               hashtype =
+                   lemtoh16(&rxdesc->wb.lower.lo_dword.hs_rss.pkt_info) &
                    IXGBE_RXDADV_RSSTYPE_MASK;
 
                if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {