@@ -257,6 +257,16 @@ RSS isn't supported when QinQ is enabled
Due to FW limitation, IXGBE doesn't support RSS when QinQ is enabled currently.
+UDP with zero checksum is reported as error
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Intel 82599 10 Gigabit Ethernet Controller Specification Update (Revision 2.87)
+Errata: 44 Integrity Error Reported for IPv4/UDP Packets With Zero Checksum
+
+To support UDP zero checksum, the zero and bad UDP checksum packet is marked as
+PKT_RX_L4_CKSUM_UNKNOWN, so the application needs to recompute the checksum to
+validate it.
+
Inline crypto processing support
--------------------------------
@@ -1466,7 +1466,8 @@ rx_desc_status_to_pkt_flags(uint32_t rx_status, uint64_t vlan_flags)
}
static inline uint64_t
-rx_desc_error_to_pkt_flags(uint32_t rx_status)
+rx_desc_error_to_pkt_flags(uint32_t rx_status, uint16_t pkt_info,
+ uint8_t rx_udp_csum_zero_err)
{
uint64_t pkt_flags;
@@ -1483,6 +1484,15 @@ rx_desc_error_to_pkt_flags(uint32_t rx_status)
pkt_flags = error_to_pkt_flags_map[(rx_status >>
IXGBE_RXDADV_ERR_CKSUM_BIT) & IXGBE_RXDADV_ERR_CKSUM_MSK];
+ /* Mask out the bad UDP checksum error if the hardware has UDP zero
+ * checksum error issue, so that the software application will then
+ * have to recompute the checksum itself if needed.
+ */
+ if ((rx_status & IXGBE_RXDADV_ERR_TCPE) &&
+ (pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
+ rx_udp_csum_zero_err)
+ pkt_flags &= ~PKT_RX_L4_CKSUM_BAD;
+
if ((rx_status & IXGBE_RXD_STAT_OUTERIPCS) &&
(rx_status & IXGBE_RXDADV_ERR_OUTERIPER)) {
pkt_flags |= PKT_RX_EIP_CKSUM_BAD;
@@ -1569,7 +1579,9 @@ ixgbe_rx_scan_hw_ring(struct ixgbe_rx_queue *rxq)
/* convert descriptor fields to rte mbuf flags */
pkt_flags = rx_desc_status_to_pkt_flags(s[j],
vlan_flags);
- pkt_flags |= rx_desc_error_to_pkt_flags(s[j]);
+ pkt_flags |= rx_desc_error_to_pkt_flags(s[j],
+ (uint16_t)pkt_info[j],
+ rxq->rx_udp_csum_zero_err);
pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags
((uint16_t)pkt_info[j]);
mb->ol_flags = pkt_flags;
@@ -1902,7 +1914,9 @@ ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
rxm->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan);
pkt_flags = rx_desc_status_to_pkt_flags(staterr, vlan_flags);
- pkt_flags = pkt_flags | rx_desc_error_to_pkt_flags(staterr);
+ pkt_flags = pkt_flags |
+ rx_desc_error_to_pkt_flags(staterr, (uint16_t)pkt_info,
+ rxq->rx_udp_csum_zero_err);
pkt_flags = pkt_flags |
ixgbe_rxd_pkt_info_to_pkt_flags((uint16_t)pkt_info);
rxm->ol_flags = pkt_flags;
@@ -1995,7 +2009,8 @@ ixgbe_fill_cluster_head_buf(
head->vlan_tci = rte_le_to_cpu_16(desc->wb.upper.vlan);
pkt_info = rte_le_to_cpu_32(desc->wb.lower.lo_dword.data);
pkt_flags = rx_desc_status_to_pkt_flags(staterr, rxq->vlan_flags);
- pkt_flags |= rx_desc_error_to_pkt_flags(staterr);
+ pkt_flags |= rx_desc_error_to_pkt_flags(staterr, (uint16_t)pkt_info,
+ rxq->rx_udp_csum_zero_err);
pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags((uint16_t)pkt_info);
head->ol_flags = pkt_flags;
head->packet_type =
@@ -3116,6 +3131,13 @@ ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
else
rxq->pkt_type_mask = IXGBE_PACKET_TYPE_MASK_82599;
+ /*
+ * 82599 errata, UDP frames with a 0 checksum can be marked as checksum
+ * errors.
+ */
+ if (hw->mac.type == ixgbe_mac_82599EB)
+ rxq->rx_udp_csum_zero_err = 1;
+
/*
* Allocate RX ring hardware descriptors. A memzone large enough to
* handle the maximum ring size is allocated in order to allow for
@@ -129,6 +129,8 @@ struct ixgbe_rx_queue {
uint8_t crc_len; /**< 0 if CRC stripped, 4 otherwise. */
uint8_t drop_en; /**< If not 0, set SRRCTL.Drop_En. */
uint8_t rx_deferred_start; /**< not in global dev start. */
+ /** UDP frames with a 0 checksum can be marked as checksum errors. */
+ uint8_t rx_udp_csum_zero_err;
/** flags to set in mbuf when a vlan is detected. */
uint64_t vlan_flags;
uint64_t offloads; /**< Rx offloads with DEV_RX_OFFLOAD_* */
@@ -132,9 +132,9 @@ desc_to_olflags_v_ipsec(__m128i descs[4], struct rte_mbuf **rx_pkts)
static inline void
desc_to_olflags_v(__m128i descs[4], __m128i mbuf_init, uint8_t vlan_flags,
- struct rte_mbuf **rx_pkts)
+ uint16_t udp_p_flag, struct rte_mbuf **rx_pkts)
{
- __m128i ptype0, ptype1, vtag0, vtag1, csum;
+ __m128i ptype0, ptype1, vtag0, vtag1, csum, udp_csum_skip;
__m128i rearm0, rearm1, rearm2, rearm3;
/* mask everything except rss type */
@@ -161,6 +161,7 @@ desc_to_olflags_v(__m128i descs[4], __m128i mbuf_init, uint8_t vlan_flags,
(IXGBE_RXDADV_ERR_TCPE | IXGBE_RXDADV_ERR_IPE) >> 16,
IXGBE_RXD_STAT_VP, IXGBE_RXD_STAT_VP,
IXGBE_RXD_STAT_VP, IXGBE_RXD_STAT_VP);
+
/* map vlan present (0x8), IPE (0x2), L4E (0x1) to ol_flags */
const __m128i vlan_csum_map_lo = _mm_set_epi8(
0, 0, 0, 0,
@@ -182,12 +183,23 @@ desc_to_olflags_v(__m128i descs[4], __m128i mbuf_init, uint8_t vlan_flags,
0, PKT_RX_L4_CKSUM_GOOD >> sizeof(uint8_t), 0,
PKT_RX_L4_CKSUM_GOOD >> sizeof(uint8_t));
+ /* mask everything except UDP header present if specified */
+ const __m128i udp_hdr_p_msk = _mm_set_epi16
+ (0, 0, 0, 0,
+ udp_p_flag, udp_p_flag, udp_p_flag, udp_p_flag);
+
+ const __m128i udp_csum_bad_shuf = _mm_set_epi8
+ (0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, ~(uint8_t)PKT_RX_L4_CKSUM_BAD, 0xFF);
+
ptype0 = _mm_unpacklo_epi16(descs[0], descs[1]);
ptype1 = _mm_unpacklo_epi16(descs[2], descs[3]);
vtag0 = _mm_unpackhi_epi16(descs[0], descs[1]);
vtag1 = _mm_unpackhi_epi16(descs[2], descs[3]);
ptype0 = _mm_unpacklo_epi32(ptype0, ptype1);
+ /* save the UDP header present information */
+ udp_csum_skip = _mm_and_si128(ptype0, udp_hdr_p_msk);
ptype0 = _mm_and_si128(ptype0, rsstype_msk);
ptype0 = _mm_shuffle_epi8(rss_flags, ptype0);
@@ -215,6 +227,15 @@ desc_to_olflags_v(__m128i descs[4], __m128i mbuf_init, uint8_t vlan_flags,
vtag1 = _mm_or_si128(ptype0, vtag1);
+ /* convert the UDP header present 0x200 to 0x1 for aligning with each
+ * PKT_RX_L4_CKSUM_BAD value in low byte of 16 bits word ol_flag in
+ * vtag1 (4x16). Then mask out the bad checksum value by shuffle and
+ * bit-mask.
+ */
+ udp_csum_skip = _mm_srli_epi16(udp_csum_skip, 9);
+ udp_csum_skip = _mm_shuffle_epi8(udp_csum_bad_shuf, udp_csum_skip);
+ vtag1 = _mm_and_si128(vtag1, udp_csum_skip);
+
/*
* At this point, we have the 4 sets of flags in the low 64-bits
* of vtag1 (4x16).
@@ -341,6 +362,7 @@ _recv_raw_pkts_vec(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,
__m128i dd_check, eop_check;
__m128i mbuf_init;
uint8_t vlan_flags;
+ uint16_t udp_p_flag = 0; /* Rx Descriptor UDP header present */
/* nb_pkts has to be floor-aligned to RTE_IXGBE_DESCS_PER_LOOP */
nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_IXGBE_DESCS_PER_LOOP);
@@ -365,6 +387,9 @@ _recv_raw_pkts_vec(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,
rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)))
return 0;
+ if (rxq->rx_udp_csum_zero_err)
+ udp_p_flag = IXGBE_RXDADV_PKTTYPE_UDP;
+
/* 4 packets DD mask */
dd_check = _mm_set_epi64x(0x0000000100000001LL, 0x0000000100000001LL);
@@ -477,7 +502,8 @@ _recv_raw_pkts_vec(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,
sterr_tmp1 = _mm_unpackhi_epi32(descs[1], descs[0]);
/* set ol_flags with vlan packet type */
- desc_to_olflags_v(descs, mbuf_init, vlan_flags, &rx_pkts[pos]);
+ desc_to_olflags_v(descs, mbuf_init, vlan_flags, udp_p_flag,
+ &rx_pkts[pos]);
#ifdef RTE_LIB_SECURITY
if (unlikely(use_ipsec))