[dpdk-dev] [PATCH 2/5] net/fm10k: implement new Rx checksum flag

[Xiao Wang]

Add CKSUM_GOOD flag to distinguish a good checksum from an unknown one.

Signed-off-by: Xiao Wang <xiao.w.wang at intel.com>
---
 drivers/net/fm10k/fm10k_rxtx.c     | 4 ++++
 drivers/net/fm10k/fm10k_rxtx_vec.c | 7 +++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
index bf5888b..32cc7ff 100644
--- a/drivers/net/fm10k/fm10k_rxtx.c
+++ b/drivers/net/fm10k/fm10k_rxtx.c
@@ -101,11 +101,15 @@ rx_desc_to_ol_flags(struct rte_mbuf *m, const union 
fm10k_rx_desc *d)
                (FM10K_RXD_STATUS_IPCS | FM10K_RXD_STATUS_IPE)) ==
                (FM10K_RXD_STATUS_IPCS | FM10K_RXD_STATUS_IPE)))
                m->ol_flags |= PKT_RX_IP_CKSUM_BAD;
+       else
+               m->ol_flags |= PKT_RX_IP_CKSUM_GOOD;

        if (unlikely((d->d.staterr &
                (FM10K_RXD_STATUS_L4CS | FM10K_RXD_STATUS_L4E)) ==
                (FM10K_RXD_STATUS_L4CS | FM10K_RXD_STATUS_L4E)))
                m->ol_flags |= PKT_RX_L4_CKSUM_BAD;
+       else
+               m->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 }

 uint16_t
diff --git a/drivers/net/fm10k/fm10k_rxtx_vec.c 
b/drivers/net/fm10k/fm10k_rxtx_vec.c
index 9ea747e..8c08b44 100644
--- a/drivers/net/fm10k/fm10k_rxtx_vec.c
+++ b/drivers/net/fm10k/fm10k_rxtx_vec.c
@@ -95,8 +95,10 @@ fm10k_desc_to_olflags_v(__m128i descs[4], struct rte_mbuf 
**rx_pkts)
        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);
+                       (PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD) >> 1,
+                       (PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_GOOD) >> 1,
+                       (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_BAD) >> 1,
+                       (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD) >> 1);

        const __m128i rxe_flag = _mm_set_epi8(0, 0, 0, 0,
                        0, 0, 0, 0,
@@ -139,6 +141,7 @@ fm10k_desc_to_olflags_v(__m128i descs[4], struct rte_mbuf 
**rx_pkts)
        /* Process L4/L3 checksum error flags */
        cksumflag = _mm_srli_epi16(cksumflag, L3L4EFLAG_SHIFT);
        cksumflag = _mm_shuffle_epi8(l3l4cksum_flag, cksumflag);
+       cksumflag = _mm_slli_epi16(cksumflag, 1);
        vtag1 = _mm_or_si128(cksumflag, vtag1);

        vol.dword = _mm_cvtsi128_si64(vtag1);
-- 
1.9.3