[dpdk-dev] [PATCH 10/12] net/iavf: support flow mark in SSE path

[Leyi Rong <leyi.rong@intel.com>]

Support Flow Director mark ID parsing from Flex
Rx descriptor in SSE path.

Signed-off-by: Leyi Rong <leyi.rong@intel.com>
---
 drivers/net/iavf/iavf_rxtx_vec_sse.c | 48 +++++++++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/drivers/net/iavf/iavf_rxtx_vec_sse.c b/drivers/net/iavf/iavf_rxtx_vec_sse.c
index 9c1f2a445..eb784938f 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_sse.c
+++ b/drivers/net/iavf/iavf_rxtx_vec_sse.c
@@ -189,6 +189,25 @@ desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
 	_mm_store_si128((__m128i *)&rx_pkts[3]->rearm_data, rearm3);
 }
 
+static inline __m128i
+flex_rxd_to_fdir_flags_vec(const __m128i fdir_id0_3)
+{
+#define FDID_MIS_MAGIC 0xFFFFFFFF
+	RTE_BUILD_BUG_ON(PKT_RX_FDIR != (1 << 2));
+	RTE_BUILD_BUG_ON(PKT_RX_FDIR_ID != (1 << 13));
+	const __m128i pkt_fdir_bit = _mm_set1_epi32(PKT_RX_FDIR |
+			PKT_RX_FDIR_ID);
+	/* desc->flow_id field == 0xFFFFFFFF means fdir mismatch */
+	const __m128i fdir_mis_mask = _mm_set1_epi32(FDID_MIS_MAGIC);
+	__m128i fdir_mask = _mm_cmpeq_epi32(fdir_id0_3,
+			fdir_mis_mask);
+	/* this XOR op results to bit-reverse the fdir_mask */
+	fdir_mask = _mm_xor_si128(fdir_mask, fdir_mis_mask);
+	const __m128i fdir_flags = _mm_and_si128(fdir_mask, pkt_fdir_bit);
+
+	return fdir_flags;
+}
+
 static inline void
 flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
 		       struct rte_mbuf **rx_pkts)
@@ -267,6 +286,32 @@ flex_desc_to_olflags_v(struct iavf_rx_queue *rxq, __m128i descs[4],
 	/* merge the flags */
 	flags = _mm_or_si128(flags, rss_vlan);
 
+	if (rxq->vsi->adapter->fdir_enabled) {
+		const __m128i fdir_id0_1 =
+			_mm_unpackhi_epi32(descs[0], descs[1]);
+
+		const __m128i fdir_id2_3 =
+			_mm_unpackhi_epi32(descs[2], descs[3]);
+
+		const __m128i fdir_id0_3 =
+			_mm_unpackhi_epi64(fdir_id0_1, fdir_id2_3);
+
+		const __m128i fdir_flags =
+			flex_rxd_to_fdir_flags_vec(fdir_id0_3);
+
+		/* merge with fdir_flags */
+		flags = _mm_or_si128(flags, fdir_flags);
+
+		/* write fdir_id to mbuf if FDIR match */
+		uint32_t fdir_id_extr, i;
+
+		for (i = 0; i < IAVF_VPMD_DESCS_PER_LOOP; i++) {
+			fdir_id_extr = _mm_extract_epi32(fdir_id0_3, i);
+			if (fdir_id_extr != FDID_MIS_MAGIC)
+				rx_pkts[i]->hash.fdir.hi = fdir_id_extr;
+		}
+	} /* if() on fdir_enabled */
+
 	/**
 	 * At this point, we have the 4 sets of flags in the low 16-bits
 	 * of each 32-bit value in flags.
@@ -604,7 +649,8 @@ _recv_raw_pkts_vec_flex_rxd(struct iavf_rx_queue *rxq,
 	const __m128i zero = _mm_setzero_si128();
 	/* mask to shuffle from desc. to mbuf */
 	const __m128i shuf_msk = _mm_set_epi8
-			(15, 14, 13, 12,  /* octet 12~15, 32 bits rss */
+			(0xFF, 0xFF,
+			 0xFF, 0xFF,  /* rss not supported */
 			 11, 10,      /* octet 10~11, 16 bits vlan_macip */
 			 5, 4,        /* octet 4~5, 16 bits data_len */
 			 0xFF, 0xFF,  /* skip high 16 bits pkt_len, zero out */
-- 
2.17.1