From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shreyansh Jain Subject: [PATCH 36/38] net/dpaa: add support for checksum offload Date: Fri, 16 Jun 2017 11:11:06 +0530 Message-ID: <1497591668-3320-37-git-send-email-shreyansh.jain@nxp.com> References: <1497591668-3320-1-git-send-email-shreyansh.jain@nxp.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , To: Return-path: Received: from NAM01-BY2-obe.outbound.protection.outlook.com (mail-by2nam01on0061.outbound.protection.outlook.com [104.47.34.61]) by dpdk.org (Postfix) with ESMTP id 6FCEA2BB9 for ; Fri, 16 Jun 2017 07:33:36 +0200 (CEST) In-Reply-To: <1497591668-3320-1-git-send-email-shreyansh.jain@nxp.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Hemant Agrawal Signed-off-by: Shreyansh Jain --- doc/guides/nics/features/dpaa.ini | 2 + drivers/net/dpaa/dpaa_ethdev.c | 4 ++ drivers/net/dpaa/dpaa_rxtx.c | 88 +++++++++++++++++++++++++++++++++++++++ drivers/net/dpaa/dpaa_rxtx.h | 19 +++++++++ 4 files changed, 113 insertions(+) diff --git a/doc/guides/nics/features/dpaa.ini b/doc/guides/nics/features/dpaa.ini index 2e19664..c8e3561 100644 --- a/doc/guides/nics/features/dpaa.ini +++ b/doc/guides/nics/features/dpaa.ini @@ -14,6 +14,8 @@ Allmulticast mode = Y Unicast MAC filter = Y RSS hash = Y Flow control = Y +L3 checksum offload = Y +L4 checksum offload = Y Packet type parsing = Y Basic stats = Y ARMv8 = Y diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c index 4d2bae0..da14a1c 100644 --- a/drivers/net/dpaa/dpaa_ethdev.c +++ b/drivers/net/dpaa/dpaa_ethdev.c @@ -184,6 +184,10 @@ static void dpaa_eth_dev_info(struct rte_eth_dev *dev, (DEV_RX_OFFLOAD_IPV4_CKSUM | DEV_RX_OFFLOAD_UDP_CKSUM | DEV_RX_OFFLOAD_TCP_CKSUM); + dev_info->tx_offload_capa = + (DEV_TX_OFFLOAD_IPV4_CKSUM | + DEV_TX_OFFLOAD_UDP_CKSUM | + DEV_TX_OFFLOAD_TCP_CKSUM); } static int dpaa_eth_link_update(struct rte_eth_dev *dev, diff --git a/drivers/net/dpaa/dpaa_rxtx.c b/drivers/net/dpaa/dpaa_rxtx.c index e2db3cc..eef0d49 100644 --- a/drivers/net/dpaa/dpaa_rxtx.c +++ b/drivers/net/dpaa/dpaa_rxtx.c @@ -195,6 +195,82 @@ static inline void dpaa_eth_packet_info(struct rte_mbuf *m, m->ol_flags |= PKT_RX_VLAN_PKT; } +static inline void dpaa_checksum(struct rte_mbuf *mbuf) +{ + struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *); + char *l3_hdr = (char *)eth_hdr + mbuf->l2_len; + struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr; + struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr; + + PMD_TX_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf); + + if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV4_EXT)) { + ipv4_hdr = (struct ipv4_hdr *)l3_hdr; + ipv4_hdr->hdr_checksum = 0; + ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr); + } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6_EXT)) + ipv6_hdr = (struct ipv6_hdr *)l3_hdr; + + if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) { + struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr + + mbuf->l3_len); + tcp_hdr->cksum = 0; + if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4)) + tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, + tcp_hdr); + else /* assume ethertype == ETHER_TYPE_IPv6 */ + tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr, + tcp_hdr); + } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == + RTE_PTYPE_L4_UDP) { + struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr + + mbuf->l3_len); + udp_hdr->dgram_cksum = 0; + if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4)) + udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, + udp_hdr); + else /* assume ethertype == ETHER_TYPE_IPv6 */ + udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr, + udp_hdr); + } +} + +static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf, + struct qm_fd *fd, char *prs_buf) +{ + struct dpaa_eth_parse_results_t *prs; + + PMD_TX_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf); + + prs = GET_TX_PRS(prs_buf); + prs->l3r = 0; + prs->l4r = 0; + if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV4_EXT)) + prs->l3r = DPAA_L3_PARSE_RESULT_IPV4; + else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6_EXT)) + prs->l3r = DPAA_L3_PARSE_RESULT_IPV6; + + if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) + prs->l4r = DPAA_L4_PARSE_RESULT_TCP; + else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP) + prs->l4r = DPAA_L4_PARSE_RESULT_UDP; + + prs->ip_off[0] = mbuf->l2_len; + prs->l4_off = mbuf->l3_len + mbuf->l2_len; + /* Enable L3 (and L4, if TCP or UDP) HW checksum*/ + fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC; +} + static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd, uint32_t ifid) { @@ -363,6 +439,18 @@ dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) } rte_pktmbuf_free(mbuf); } + if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) { + if (mbuf->data_off < DEFAULT_TX_ICEOF + + sizeof(struct dpaa_eth_parse_results_t)) { + PMD_DRV_LOG(DEBUG, "Checksum offload Err: " + "Not enough Headroom " + "space for correct Checksum offload." + "So Calculating checksum in Software."); + dpaa_checksum(mbuf); + } else + dpaa_checksum_offload(mbuf, &fd_arr[loop], + mbuf->buf_addr); + } } else { PMD_DRV_LOG(DEBUG, "Number of Segments not supported"); /* Set frames_to_send & nb_bufs so that diff --git a/drivers/net/dpaa/dpaa_rxtx.h b/drivers/net/dpaa/dpaa_rxtx.h index f688934..b1c292b 100644 --- a/drivers/net/dpaa/dpaa_rxtx.h +++ b/drivers/net/dpaa/dpaa_rxtx.h @@ -41,6 +41,22 @@ /* IC offsets from buffer header address */ #define DEFAULT_RX_ICEOF 16 +#define DEFAULT_TX_ICEOF 16 + +/* + * Values for the L3R field of the FM Parse Results + */ +/* L3 Type field: First IP Present IPv4 */ +#define DPAA_L3_PARSE_RESULT_IPV4 0x80 +/* L3 Type field: First IP Present IPv6 */ +#define DPAA_L3_PARSE_RESULT_IPV6 0x40 +/* Values for the L4R field of the FM Parse Results + * See $8.8.4.7.20 - L4 HXS - L4 Results from DPAA-Rev2 Reference Manual. + */ +/* L4 Type field: UDP */ +#define DPAA_L4_PARSE_RESULT_UDP 0x40 +/* L4 Type field: TCP */ +#define DPAA_L4_PARSE_RESULT_TCP 0x20 #define DPAA_MAX_DEQUEUE_NUM_FRAMES 63 /**