From 04a681426d4999f9ff5278a3cc2c8127d25b6f76 Mon Sep 17 00:00:00 2001 From: Rahul Gupta Date: Wed, 17 Jul 2019 16:11:30 +0530 Subject: [PATCH] net/bnxt: fix L4 checksum error indication in Rx Update ol_flags correctly for checksum errors in case of tunnel and non-tunnel packet. Fixes: 65ee636872eb ("net/bnxt: fix Rx checksum flags") Cc: stable@dpdk.org Signed-off-by: Rahul Gupta Signed-off-by: Ajit Khaparde --- drivers/net/bnxt/bnxt_rxr.c | 43 ++++++++++--- drivers/net/bnxt/bnxt_rxr.h | 120 ++++++++++++++++++++++++++++++------ 2 files changed, 133 insertions(+), 30 deletions(-) diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c index 44303f3b02..54a2cf5fd3 100644 --- a/drivers/net/bnxt/bnxt_rxr.c +++ b/drivers/net/bnxt/bnxt_rxr.c @@ -362,6 +362,7 @@ static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt, int rc = 0; uint8_t agg_buf = 0; uint16_t cmp_type; + uint32_t flags2_f = 0; rxcmp = (struct rx_pkt_cmpl *) &cpr->cp_desc_ring[cp_cons]; @@ -440,19 +441,41 @@ static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt, mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED; } - if (likely(RX_CMP_IP_CS_OK(rxcmp1))) - mbuf->ol_flags |= PKT_RX_IP_CKSUM_GOOD; - else if (likely(RX_CMP_IP_CS_UNKNOWN(rxcmp1))) - mbuf->ol_flags |= PKT_RX_IP_CKSUM_UNKNOWN; - else + flags2_f = flags2_0xf(rxcmp1); + /* IP Checksum */ + if (unlikely(((IS_IP_NONTUNNEL_PKT(flags2_f)) && + (RX_CMP_IP_CS_ERROR(rxcmp1))) || + (IS_IP_TUNNEL_PKT(flags2_f) && + (RX_CMP_IP_OUTER_CS_ERROR(rxcmp1))))) { mbuf->ol_flags |= PKT_RX_IP_CKSUM_BAD; + } else if (unlikely(RX_CMP_IP_CS_UNKNOWN(rxcmp1))) { + mbuf->ol_flags |= PKT_RX_IP_CKSUM_UNKNOWN; + } else { + mbuf->ol_flags |= PKT_RX_IP_CKSUM_GOOD; + } - if (likely(RX_CMP_L4_CS_OK(rxcmp1))) - mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD; - else if (likely(RX_CMP_L4_CS_UNKNOWN(rxcmp1))) + /* L4 Checksum */ + if (likely(IS_L4_NONTUNNEL_PKT(flags2_f))) { + if (unlikely(RX_CMP_L4_INNER_CS_ERR2(rxcmp1))) + mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD; + else + mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD; + } else if (IS_L4_TUNNEL_PKT(flags2_f)) { + if (unlikely(RX_CMP_L4_INNER_CS_ERR2(rxcmp1))) + mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD; + else + mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD; + if (unlikely(RX_CMP_L4_OUTER_CS_ERR2(rxcmp1))) { + mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_BAD; + } else if (unlikely(IS_L4_TUNNEL_PKT_ONLY_INNER_L4_CS + (flags2_f))) { + mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_UNKNOWN; + } else { + mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_GOOD; + } + } else if (unlikely(RX_CMP_L4_CS_UNKNOWN(rxcmp1))) { mbuf->ol_flags |= PKT_RX_L4_CKSUM_UNKNOWN; - else - mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD; + } mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1); diff --git a/drivers/net/bnxt/bnxt_rxr.h b/drivers/net/bnxt/bnxt_rxr.h index 6523b94c61..6a80c37c81 100644 --- a/drivers/net/bnxt/bnxt_rxr.h +++ b/drivers/net/bnxt/bnxt_rxr.h @@ -24,36 +24,116 @@ #define BNXT_TPA_OUTER_L3_OFF(hdr_info) \ ((hdr_info) & 0x1ff) -#define RX_CMP_L4_CS_BITS \ - rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_L4_CS_CALC | \ - RX_PKT_CMPL_FLAGS2_T_L4_CS_CALC) - -#define RX_CMP_L4_CS_ERR_BITS \ - rte_cpu_to_le_32(RX_PKT_CMPL_ERRORS_L4_CS_ERROR | \ - RX_PKT_CMPL_ERRORS_T_L4_CS_ERROR) +#define flags2_0xf(rxcmp1) \ + (((rxcmp1)->flags2) & 0xf) -#define RX_CMP_L4_CS_OK(rxcmp1) \ - (((rxcmp1)->flags2 & RX_CMP_L4_CS_BITS) && \ - !((rxcmp1)->errors_v2 & RX_CMP_L4_CS_ERR_BITS)) +/* IP non tunnel can be with or without L4- + * Ether / (vlan) / IP|IP6 / UDP|TCP|SCTP Or + * Ether / (vlan) / outer IP|IP6 / ICMP + * we use '==' instead of '&' because tunnel pkts have all 4 fields set. + */ +#define IS_IP_NONTUNNEL_PKT(flags2_f) \ + ( \ + ((flags2_f) == \ + (rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_CS_CALC))) || \ + ((flags2_f) == \ + (rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_CS_CALC | \ + RX_PKT_CMPL_FLAGS2_L4_CS_CALC))) \ + ) + +/* IP Tunnel pkt must have atleast tunnel-IP-calc set. + * again tunnel ie outer L4 is optional bcoz of + * Ether / (vlan) / outer IP|IP6 / GRE / Ether / IP|IP6 / UDP|TCP|SCTP + * Ether / (vlan) / outer IP|IP6 / outer UDP / VxLAN / Ether / IP|IP6 / + * UDP|TCP|SCTP + * Ether / (vlan) / outer IP|IP6 / outer UDP / VXLAN-GPE / Ether / IP|IP6 / + * UDP|TCP|SCTP + * Ether / (vlan) / outer IP|IP6 / outer UDP / VXLAN-GPE / IP|IP6 / + * UDP|TCP|SCTP + * Ether / (vlan) / outer IP|IP6 / GRE / IP|IP6 / UDP|TCP|SCTP + * Ether / (vlan) / outer IP|IP6 / IP|IP6 / UDP|TCP|SCTP + * also inner L3 chksum error is not taken into consideration by DPDK. + */ +#define IS_IP_TUNNEL_PKT(flags2_f) \ + ((flags2_f) & rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC)) -#define RX_CMP_L4_CS_UNKNOWN(rxcmp1) \ - !((rxcmp1)->flags2 & RX_CMP_L4_CS_BITS) +/* RX_PKT_CMPL_ERRORS_IP_CS_ERROR only for Non-tunnel pkts. + * For tunnel pkts RX_PKT_CMPL_ERRORS_IP_CS_ERROR is not accounted and treated + * as good csum pkt. + */ +#define RX_CMP_IP_CS_ERROR(rxcmp1) \ + ((rxcmp1)->errors_v2 & \ + rte_cpu_to_le_32(RX_PKT_CMPL_ERRORS_IP_CS_ERROR)) -#define RX_CMP_IP_CS_ERR_BITS \ - rte_cpu_to_le_32(RX_PKT_CMPL_ERRORS_IP_CS_ERROR | \ - RX_PKT_CMPL_ERRORS_T_IP_CS_ERROR) +#define RX_CMP_IP_OUTER_CS_ERROR(rxcmp1) \ + ((rxcmp1)->errors_v2 & \ + rte_cpu_to_le_32(RX_PKT_CMPL_ERRORS_T_IP_CS_ERROR)) #define RX_CMP_IP_CS_BITS \ rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_CS_CALC | \ RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC) -#define RX_CMP_IP_CS_OK(rxcmp1) \ - (((rxcmp1)->flags2 & RX_CMP_IP_CS_BITS) && \ - !((rxcmp1)->errors_v2 & RX_CMP_IP_CS_ERR_BITS)) - -#define RX_CMP_IP_CS_UNKNOWN(rxcmp1) \ +#define RX_CMP_IP_CS_UNKNOWN(rxcmp1) \ !((rxcmp1)->flags2 & RX_CMP_IP_CS_BITS) +/* L4 non tunnel pkt- + * Ether / (vlan) / IP6 / UDP|TCP|SCTP + */ +#define IS_L4_NONTUNNEL_PKT(flags2_f) \ + ( \ + ((flags2_f) == \ + (rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_CS_CALC | \ + RX_PKT_CMPL_FLAGS2_L4_CS_CALC)))) + +/* L4 tunnel pkt- + * Outer L4 is not mandatory. Eg: GRE- + * Ether / (vlan) / outer IP|IP6 / GRE / Ether / IP|IP6 / UDP|TCP|SCTP + * Ether / (vlan) / outer IP|IP6 / outer UDP / VxLAN / Ether / IP|IP6 / + * UDP|TCP|SCTP + */ +#define IS_L4_TUNNEL_PKT_INNER_OUTER_L4_CS(flags2_f) \ + ((flags2_f) == \ + (rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_CS_CALC | \ + RX_PKT_CMPL_FLAGS2_L4_CS_CALC | \ + RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC | \ + RX_PKT_CMPL_FLAGS2_T_L4_CS_CALC))) + +#define IS_L4_TUNNEL_PKT_ONLY_INNER_L4_CS(flags2_f) \ + ((flags2_f) == \ + (rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_CS_CALC | \ + RX_PKT_CMPL_FLAGS2_L4_CS_CALC | \ + RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC))) + +#define IS_L4_TUNNEL_PKT(flags2_f) \ + ( \ + IS_L4_TUNNEL_PKT_INNER_OUTER_L4_CS(flags2_f) || \ + IS_L4_TUNNEL_PKT_ONLY_INNER_L4_CS(flags2_f) \ + ) + +#define RX_CMP_L4_CS_BITS \ + rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_L4_CS_CALC) + +#define RX_CMP_L4_CS_UNKNOWN(rxcmp1) \ + !((rxcmp1)->flags2 & RX_CMP_L4_CS_BITS) + +#define RX_CMP_T_L4_CS_BITS \ + rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_T_L4_CS_CALC) + +#define RX_CMP_T_L4_CS_UNKNOWN(rxcmp1) \ + !((rxcmp1)->flags2 & RX_CMP_T_L4_CS_BITS) + +/* Outer L4 chksum error + */ +#define RX_CMP_L4_OUTER_CS_ERR2(rxcmp1) \ + ((rxcmp1)->errors_v2 & \ + rte_cpu_to_le_32(RX_PKT_CMPL_ERRORS_T_L4_CS_ERROR)) + +/* Inner L4 chksum error + */ +#define RX_CMP_L4_INNER_CS_ERR2(rxcmp1) \ + ((rxcmp1)->errors_v2 & \ + rte_cpu_to_le_32(RX_PKT_CMPL_ERRORS_L4_CS_ERROR)) + #define BNXT_RX_POST_THRESH 32 enum pkt_hash_types { -- 2.20.1