From: "Chen Jing D(Mark)" <jing.d.c...@intel.com>
Using SSE instructions to parse error flags in HW Rx descriptor,
then set corresponding bits of mbuf.
Signed-off-by: Chen Jing D(Mark) <jing.d.chen at intel.com>
---
doc/guides/rel_notes/release_2_3.rst | 2 +
drivers/net/fm10k/fm10k_rxtx_vec.c | 42 +++++++++++++++++++++++++++++++++-
2 files changed, 43 insertions(+), 1 deletions(-)
diff --git a/doc/guides/rel_notes/release_2_3.rst
b/doc/guides/rel_notes/release_2_3.rst
index 99de186..19e8aa2 100644
--- a/doc/guides/rel_notes/release_2_3.rst
+++ b/doc/guides/rel_notes/release_2_3.rst
@@ -3,7 +3,9 @@ DPDK Release 2.3
New Features
------------
+* **Handle error flags in fm10k vector RX func**
+ * Parse err flags in Rx desc and set error bits in mbuf with vector
instructions.
Resolved Issues
---------------
diff --git a/drivers/net/fm10k/fm10k_rxtx_vec.c
b/drivers/net/fm10k/fm10k_rxtx_vec.c
index 2a57eef..0c48a48 100644
--- a/drivers/net/fm10k/fm10k_rxtx_vec.c
+++ b/drivers/net/fm10k/fm10k_rxtx_vec.c
@@ -61,11 +61,17 @@ fm10k_reset_tx_queue(struct fm10k_tx_queue *txq);
#define L3TYPE_SHIFT (4)
/* L4 type shift */
#define L4TYPE_SHIFT (7)
+/* HBO flag shift */
+#define HBOFLAG_SHIFT (10)
+/* RXE flag shift */
+#define RXEFLAG_SHIFT (13)
+/* IPE/L4E flag shift */
+#define L3L4EFLAG_SHIFT (14)
static inline void
fm10k_desc_to_olflags_v(__m128i descs[4], struct rte_mbuf **rx_pkts)
{
- __m128i ptype0, ptype1, vtag0, vtag1;
+ __m128i ptype0, ptype1, vtag0, vtag1, eflag0, eflag1, cksumflag;
union {
uint16_t e[4];
uint64_t dword;
@@ -81,12 +87,29 @@ fm10k_desc_to_olflags_v(__m128i descs[4], struct rte_mbuf
**rx_pkts)
0x0000, 0x0000, 0x0000, 0x0000,
0x000F, 0x000F, 0x000F, 0x000F);
+ /* mask for HBO and RXE flag flags */
+ const __m128i rxe_msk = _mm_set_epi16(
+ 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0001, 0x0001, 0x0001, 0x0001);
+
+ const __m128i l3l4cksum_flag = _mm_set_epi8(0, 0, 0, 0,
+ 0, 0, 0, 0,
+ 0, 0, 0, 0,
+ PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD,
+ PKT_RX_IP_CKSUM_BAD, PKT_RX_L4_CKSUM_BAD, 0);
+
+ const __m128i rxe_flag = _mm_set_epi8(0, 0, 0, 0,
+ 0, 0, 0, 0,
+ 0, 0, 0, 0,
+ 0, 0, PKT_RX_RECIP_ERR, 0);
+
/* map rss type to rss hash flag */
const __m128i rss_flags = _mm_set_epi8(0, 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);
+ /* Calculate RSS_hash and Vlan fields */
ptype0 = _mm_unpacklo_epi16(descs[0], descs[1]);
ptype1 = _mm_unpacklo_epi16(descs[2], descs[3]);
vtag0 = _mm_unpackhi_epi16(descs[0], descs[1]);
@@ -97,10 +120,27 @@ fm10k_desc_to_olflags_v(__m128i descs[4], struct rte_mbuf
**rx_pkts)
ptype0 = _mm_shuffle_epi8(rss_flags, ptype0);
vtag1 = _mm_unpacklo_epi32(vtag0, vtag1);
+ eflag0 = vtag1;
+ cksumflag = vtag1;
vtag1 = _mm_srli_epi16(vtag1, VP_SHIFT);
vtag1 = _mm_and_si128(vtag1, pkttype_msk);
vtag1 = _mm_or_si128(ptype0, vtag1);
+
+ /* Process err flags, simply set RECIP_ERR bit if HBO/IXE is set */
+ eflag1 = _mm_srli_epi16(eflag0, RXEFLAG_SHIFT);
+ eflag0 = _mm_srli_epi16(eflag0, HBOFLAG_SHIFT);
+ eflag0 = _mm_or_si128(eflag0, eflag1);
+ eflag0 = _mm_and_si128(eflag1, rxe_msk);
+ eflag0 = _mm_shuffle_epi8(rxe_flag, eflag0);
+
+ vtag1 = _mm_or_si128(eflag0, vtag1);
+
+ /* Process L4/L3 checksum error flags */
+ cksumflag = _mm_srli_epi16(cksumflag, L3L4EFLAG_SHIFT);
+ cksumflag = _mm_shuffle_epi8(l3l4cksum_flag, cksumflag);
+ vtag1 = _mm_or_si128(cksumflag, vtag1);
+
vol.dword = _mm_cvtsi128_si64(vtag1);
rx_pkts[0]->ol_flags = vol.e[0];
--
1.7.7.6
