[dpdk-dev] [PATCH] vpmd: rss hash ol_flag

[Tomasz Kulasek]

This patch adds management of PKT_RX_FDIR and PKT_RX_RSS_HASH ol_flags in vPMD.

Signed-off-by: Tomasz Kulasek <tomaszx.kulasek at intel.com>
---
 drivers/net/ixgbe/ixgbe_rxtx_vec.c |   41 +++++++++++++++++++++++++++---------
 1 file changed, 31 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec.c 
b/drivers/net/ixgbe/ixgbe_rxtx_vec.c
index abd10f6..bc30173 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx_vec.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx_vec.c
@@ -134,25 +134,38 @@ ixgbe_rxq_rearm(struct ixgbe_rx_queue *rxq)
  */
 #ifdef RTE_IXGBE_RX_OLFLAGS_ENABLE

-#define OLFLAGS_MASK     ((uint16_t)(PKT_RX_VLAN_PKT | PKT_RX_IPV4_HDR |\
-                                    PKT_RX_IPV4_HDR_EXT | PKT_RX_IPV6_HDR |\
-                                    PKT_RX_IPV6_HDR_EXT))
-#define OLFLAGS_MASK_V   (((uint64_t)OLFLAGS_MASK << 48) | \
-                         ((uint64_t)OLFLAGS_MASK << 32) | \
-                         ((uint64_t)OLFLAGS_MASK << 16) | \
-                         ((uint64_t)OLFLAGS_MASK))
-#define PTYPE_SHIFT    (1)
-#define VTAG_SHIFT     (3)
+#define OLFLAGS_MASK   ((uint16_t)(PKT_RX_VLAN_PKT | PKT_RX_IPV4_HDR |\
+                                               PKT_RX_IPV4_HDR_EXT | 
PKT_RX_IPV6_HDR |\
+                                               PKT_RX_IPV6_HDR_EXT))
+#define PTYPE_SHIFT            (1)
+#define VTAG_SHIFT             (3)

 static inline void
 desc_to_olflags_v(__m128i descs[4], struct rte_mbuf **rx_pkts)
 {
        __m128i ptype0, ptype1, vtag0, vtag1;
+
        union {
                uint16_t e[4];
                uint64_t dword;
        } vol;

+       /* pkt type + vlan olflags mask */
+       const __m128i pkttype_msk = _mm_set_epi16(
+                       0x0000, 0x0000, 0x0000, 0x0000,
+                       OLFLAGS_MASK, OLFLAGS_MASK, OLFLAGS_MASK, OLFLAGS_MASK);
+
+       /* mask everything except rss type */
+       const __m128i rsstype_msk = _mm_set_epi16(
+                       0x0000, 0x0000, 0x0000, 0x0000,
+                       0x000F, 0x000F, 0x000F, 0x000F);
+
+       /* rss type to PKT_RX_RSS_HASH translation */
+       const __m128i rss_flags = _mm_set_epi8(PKT_RX_FDIR, 0, 0, 0,
+                       0, 0, 0, PKT_RX_RSS_HASH,
+                       PKT_RX_RSS_HASH, 0, PKT_RX_RSS_HASH, 0,
+                       PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, 0);
+
        ptype0 = _mm_unpacklo_epi16(descs[0], descs[1]);
        ptype1 = _mm_unpacklo_epi16(descs[2], descs[3]);
        vtag0 = _mm_unpackhi_epi16(descs[0], descs[1]);
@@ -161,17 +174,25 @@ desc_to_olflags_v(__m128i descs[4], struct rte_mbuf 
**rx_pkts)
        ptype1 = _mm_unpacklo_epi32(ptype0, ptype1);
        vtag1 = _mm_unpacklo_epi32(vtag0, vtag1);

+       ptype0 = _mm_and_si128(ptype1, rsstype_msk);
+       ptype0 = _mm_shuffle_epi8(rss_flags, ptype0);
+
        ptype1 = _mm_slli_epi16(ptype1, PTYPE_SHIFT);
        vtag1 = _mm_srli_epi16(vtag1, VTAG_SHIFT);

        ptype1 = _mm_or_si128(ptype1, vtag1);
-       vol.dword = _mm_cvtsi128_si64(ptype1) & OLFLAGS_MASK_V;
+       ptype1 = _mm_and_si128(ptype1, pkttype_msk);
+
+       ptype0 = _mm_or_si128(ptype0, ptype1);
+
+       vol.dword = _mm_cvtsi128_si64(ptype0);

        rx_pkts[0]->ol_flags = vol.e[0];
        rx_pkts[1]->ol_flags = vol.e[1];
        rx_pkts[2]->ol_flags = vol.e[2];
        rx_pkts[3]->ol_flags = vol.e[3];
 }
+
 #else
 #define desc_to_olflags_v(desc, rx_pkts) do {} while (0)
 #endif
-- 
1.7.9.5