#ifndef __CN9K_TX_H__
#define __CN9K_TX_H__
+#define NIX_TX_OFFLOAD_NONE (0)
+#define NIX_TX_OFFLOAD_L3_L4_CSUM_F BIT(0)
+#define NIX_TX_OFFLOAD_OL3_OL4_CSUM_F BIT(1)
#define NIX_TX_OFFLOAD_VLAN_QINQ_F BIT(2)
+#define NIX_TX_OFFLOAD_MBUF_NOFF_F BIT(3)
#define NIX_TX_OFFLOAD_TSO_F BIT(4)
+/* Flags to control xmit_prepare function.
+ * Defining it from backwards to denote its been
+ * not used as offload flags to pick function
+ */
+#define NIX_TX_MULTI_SEG_F BIT(15)
+
+#define NIX_TX_NEED_SEND_HDR_W1 \
+ (NIX_TX_OFFLOAD_L3_L4_CSUM_F | NIX_TX_OFFLOAD_OL3_OL4_CSUM_F | \
+ NIX_TX_OFFLOAD_VLAN_QINQ_F | NIX_TX_OFFLOAD_TSO_F)
+
#define NIX_TX_NEED_EXT_HDR \
(NIX_TX_OFFLOAD_VLAN_QINQ_F | NIX_TX_OFFLOAD_TSO_F)
+#define NIX_XMIT_FC_OR_RETURN(txq, pkts) \
+ do { \
+ /* Cached value is low, Update the fc_cache_pkts */ \
+ if (unlikely((txq)->fc_cache_pkts < (pkts))) { \
+ /* Multiply with sqe_per_sqb to express in pkts */ \
+ (txq)->fc_cache_pkts = \
+ ((txq)->nb_sqb_bufs_adj - *(txq)->fc_mem) \
+ << (txq)->sqes_per_sqb_log2; \
+ /* Check it again for the room */ \
+ if (unlikely((txq)->fc_cache_pkts < (pkts))) \
+ return 0; \
+ } \
+ } while (0)
+
+/* Function to determine no of tx subdesc required in case ext
+ * sub desc is enabled.
+ */
+static __rte_always_inline int
+cn9k_nix_tx_ext_subs(const uint16_t flags)
+{
+ return (flags &
+ (NIX_TX_OFFLOAD_VLAN_QINQ_F | NIX_TX_OFFLOAD_TSO_F)) ? 1 : 0;
+}
+
+static __rte_always_inline void
+cn9k_nix_xmit_prepare_tso(struct rte_mbuf *m, const uint64_t flags)
+{
+ uint64_t mask, ol_flags = m->ol_flags;
+
+ if (flags & NIX_TX_OFFLOAD_TSO_F && (ol_flags & PKT_TX_TCP_SEG)) {
+ uintptr_t mdata = rte_pktmbuf_mtod(m, uintptr_t);
+ uint16_t *iplen, *oiplen, *oudplen;
+ uint16_t lso_sb, paylen;
+
+ mask = -!!(ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6));
+ lso_sb = (mask & (m->outer_l2_len + m->outer_l3_len)) +
+ m->l2_len + m->l3_len + m->l4_len;
+
+ /* Reduce payload len from base headers */
+ paylen = m->pkt_len - lso_sb;
+
+ /* Get iplen position assuming no tunnel hdr */
+ iplen = (uint16_t *)(mdata + m->l2_len +
+ (2 << !!(ol_flags & PKT_TX_IPV6)));
+ /* Handle tunnel tso */
+ if ((flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) &&
+ (ol_flags & PKT_TX_TUNNEL_MASK)) {
+ const uint8_t is_udp_tun =
+ (CNXK_NIX_UDP_TUN_BITMASK >>
+ ((ol_flags & PKT_TX_TUNNEL_MASK) >> 45)) &
+ 0x1;
+
+ oiplen = (uint16_t *)(mdata + m->outer_l2_len +
+ (2 << !!(ol_flags &
+ PKT_TX_OUTER_IPV6)));
+ *oiplen = rte_cpu_to_be_16(rte_be_to_cpu_16(*oiplen) -
+ paylen);
+
+ /* Update format for UDP tunneled packet */
+ if (is_udp_tun) {
+ oudplen = (uint16_t *)(mdata + m->outer_l2_len +
+ m->outer_l3_len + 4);
+ *oudplen = rte_cpu_to_be_16(
+ rte_be_to_cpu_16(*oudplen) - paylen);
+ }
+
+ /* Update iplen position to inner ip hdr */
+ iplen = (uint16_t *)(mdata + lso_sb - m->l3_len -
+ m->l4_len +
+ (2 << !!(ol_flags & PKT_TX_IPV6)));
+ }
+
+ *iplen = rte_cpu_to_be_16(rte_be_to_cpu_16(*iplen) - paylen);
+ }
+}
+
+static __rte_always_inline void
+cn9k_nix_xmit_prepare(struct rte_mbuf *m, uint64_t *cmd, const uint16_t flags,
+ const uint64_t lso_tun_fmt)
+{
+ struct nix_send_ext_s *send_hdr_ext;
+ struct nix_send_hdr_s *send_hdr;
+ uint64_t ol_flags = 0, mask;
+ union nix_send_hdr_w1_u w1;
+ union nix_send_sg_s *sg;
+
+ send_hdr = (struct nix_send_hdr_s *)cmd;
+ if (flags & NIX_TX_NEED_EXT_HDR) {
+ send_hdr_ext = (struct nix_send_ext_s *)(cmd + 2);
+ sg = (union nix_send_sg_s *)(cmd + 4);
+ /* Clear previous markings */
+ send_hdr_ext->w0.lso = 0;
+ send_hdr_ext->w1.u = 0;
+ } else {
+ sg = (union nix_send_sg_s *)(cmd + 2);
+ }
+
+ if (flags & NIX_TX_NEED_SEND_HDR_W1) {
+ ol_flags = m->ol_flags;
+ w1.u = 0;
+ }
+
+ if (!(flags & NIX_TX_MULTI_SEG_F)) {
+ send_hdr->w0.total = m->data_len;
+ send_hdr->w0.aura =
+ roc_npa_aura_handle_to_aura(m->pool->pool_id);
+ }
+
+ /*
+ * L3type: 2 => IPV4
+ * 3 => IPV4 with csum
+ * 4 => IPV6
+ * L3type and L3ptr needs to be set for either
+ * L3 csum or L4 csum or LSO
+ *
+ */
+
+ if ((flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) &&
+ (flags & NIX_TX_OFFLOAD_L3_L4_CSUM_F)) {
+ const uint8_t csum = !!(ol_flags & PKT_TX_OUTER_UDP_CKSUM);
+ const uint8_t ol3type =
+ ((!!(ol_flags & PKT_TX_OUTER_IPV4)) << 1) +
+ ((!!(ol_flags & PKT_TX_OUTER_IPV6)) << 2) +
+ !!(ol_flags & PKT_TX_OUTER_IP_CKSUM);
+
+ /* Outer L3 */
+ w1.ol3type = ol3type;
+ mask = 0xffffull << ((!!ol3type) << 4);
+ w1.ol3ptr = ~mask & m->outer_l2_len;
+ w1.ol4ptr = ~mask & (w1.ol3ptr + m->outer_l3_len);
+
+ /* Outer L4 */
+ w1.ol4type = csum + (csum << 1);
+
+ /* Inner L3 */
+ w1.il3type = ((!!(ol_flags & PKT_TX_IPV4)) << 1) +
+ ((!!(ol_flags & PKT_TX_IPV6)) << 2);
+ w1.il3ptr = w1.ol4ptr + m->l2_len;
+ w1.il4ptr = w1.il3ptr + m->l3_len;
+ /* Increment it by 1 if it is IPV4 as 3 is with csum */
+ w1.il3type = w1.il3type + !!(ol_flags & PKT_TX_IP_CKSUM);
+
+ /* Inner L4 */
+ w1.il4type = (ol_flags & PKT_TX_L4_MASK) >> 52;
+
+ /* In case of no tunnel header use only
+ * shift IL3/IL4 fields a bit to use
+ * OL3/OL4 for header checksum
+ */
+ mask = !ol3type;
+ w1.u = ((w1.u & 0xFFFFFFFF00000000) >> (mask << 3)) |
+ ((w1.u & 0X00000000FFFFFFFF) >> (mask << 4));
+
+ } else if (flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) {
+ const uint8_t csum = !!(ol_flags & PKT_TX_OUTER_UDP_CKSUM);
+ const uint8_t outer_l2_len = m->outer_l2_len;
+
+ /* Outer L3 */
+ w1.ol3ptr = outer_l2_len;
+ w1.ol4ptr = outer_l2_len + m->outer_l3_len;
+ /* Increment it by 1 if it is IPV4 as 3 is with csum */
+ w1.ol3type = ((!!(ol_flags & PKT_TX_OUTER_IPV4)) << 1) +
+ ((!!(ol_flags & PKT_TX_OUTER_IPV6)) << 2) +
+ !!(ol_flags & PKT_TX_OUTER_IP_CKSUM);
+
+ /* Outer L4 */
+ w1.ol4type = csum + (csum << 1);
+
+ } else if (flags & NIX_TX_OFFLOAD_L3_L4_CSUM_F) {
+ const uint8_t l2_len = m->l2_len;
+
+ /* Always use OLXPTR and OLXTYPE when only
+ * when one header is present
+ */
+
+ /* Inner L3 */
+ w1.ol3ptr = l2_len;
+ w1.ol4ptr = l2_len + m->l3_len;
+ /* Increment it by 1 if it is IPV4 as 3 is with csum */
+ w1.ol3type = ((!!(ol_flags & PKT_TX_IPV4)) << 1) +
+ ((!!(ol_flags & PKT_TX_IPV6)) << 2) +
+ !!(ol_flags & PKT_TX_IP_CKSUM);
+
+ /* Inner L4 */
+ w1.ol4type = (ol_flags & PKT_TX_L4_MASK) >> 52;
+ }
+
+ if (flags & NIX_TX_NEED_EXT_HDR && flags & NIX_TX_OFFLOAD_VLAN_QINQ_F) {
+ send_hdr_ext->w1.vlan1_ins_ena = !!(ol_flags & PKT_TX_VLAN);
+ /* HW will update ptr after vlan0 update */
+ send_hdr_ext->w1.vlan1_ins_ptr = 12;
+ send_hdr_ext->w1.vlan1_ins_tci = m->vlan_tci;
+
+ send_hdr_ext->w1.vlan0_ins_ena = !!(ol_flags & PKT_TX_QINQ);
+ /* 2B before end of l2 header */
+ send_hdr_ext->w1.vlan0_ins_ptr = 12;
+ send_hdr_ext->w1.vlan0_ins_tci = m->vlan_tci_outer;
+ }
+
+ if (flags & NIX_TX_OFFLOAD_TSO_F && (ol_flags & PKT_TX_TCP_SEG)) {
+ uint16_t lso_sb;
+ uint64_t mask;
+
+ mask = -(!w1.il3type);
+ lso_sb = (mask & w1.ol4ptr) + (~mask & w1.il4ptr) + m->l4_len;
+
+ send_hdr_ext->w0.lso_sb = lso_sb;
+ send_hdr_ext->w0.lso = 1;
+ send_hdr_ext->w0.lso_mps = m->tso_segsz;
+ send_hdr_ext->w0.lso_format =
+ NIX_LSO_FORMAT_IDX_TSOV4 + !!(ol_flags & PKT_TX_IPV6);
+ w1.ol4type = NIX_SENDL4TYPE_TCP_CKSUM;
+
+ /* Handle tunnel tso */
+ if ((flags & NIX_TX_OFFLOAD_OL3_OL4_CSUM_F) &&
+ (ol_flags & PKT_TX_TUNNEL_MASK)) {
+ const uint8_t is_udp_tun =
+ (CNXK_NIX_UDP_TUN_BITMASK >>
+ ((ol_flags & PKT_TX_TUNNEL_MASK) >> 45)) &
+ 0x1;
+ uint8_t shift = is_udp_tun ? 32 : 0;
+
+ shift += (!!(ol_flags & PKT_TX_OUTER_IPV6) << 4);
+ shift += (!!(ol_flags & PKT_TX_IPV6) << 3);
+
+ w1.il4type = NIX_SENDL4TYPE_TCP_CKSUM;
+ w1.ol4type = is_udp_tun ? NIX_SENDL4TYPE_UDP_CKSUM : 0;
+ /* Update format for UDP tunneled packet */
+ send_hdr_ext->w0.lso_format = (lso_tun_fmt >> shift);
+ }
+ }
+
+ if (flags & NIX_TX_NEED_SEND_HDR_W1)
+ send_hdr->w1.u = w1.u;
+
+ if (!(flags & NIX_TX_MULTI_SEG_F)) {
+ sg->seg1_size = m->data_len;
+ *(rte_iova_t *)(++sg) = rte_mbuf_data_iova(m);
+
+ if (flags & NIX_TX_OFFLOAD_MBUF_NOFF_F) {
+ /* DF bit = 1 if refcount of current mbuf or parent mbuf
+ * is greater than 1
+ * DF bit = 0 otherwise
+ */
+ send_hdr->w0.df = cnxk_nix_prefree_seg(m);
+ /* Ensuring mbuf fields which got updated in
+ * cnxk_nix_prefree_seg are written before LMTST.
+ */
+ rte_io_wmb();
+ }
+ /* Mark mempool object as "put" since it is freed by NIX */
+ if (!send_hdr->w0.df)
+ __mempool_check_cookies(m->pool, (void **)&m, 1, 0);
+ }
+}
+
+static __rte_always_inline void
+cn9k_nix_xmit_one(uint64_t *cmd, void *lmt_addr, const rte_iova_t io_addr,
+ const uint32_t flags)
+{
+ uint64_t lmt_status;
+
+ do {
+ roc_lmt_mov(lmt_addr, cmd, cn9k_nix_tx_ext_subs(flags));
+ lmt_status = roc_lmt_submit_ldeor(io_addr);
+ } while (lmt_status == 0);
+}
+
+static __rte_always_inline void
+cn9k_nix_xmit_prep_lmt(uint64_t *cmd, void *lmt_addr, const uint32_t flags)
+{
+ roc_lmt_mov(lmt_addr, cmd, cn9k_nix_tx_ext_subs(flags));
+}
+
+static __rte_always_inline uint64_t
+cn9k_nix_xmit_submit_lmt(const rte_iova_t io_addr)
+{
+ return roc_lmt_submit_ldeor(io_addr);
+}
+
+static __rte_always_inline uint64_t
+cn9k_nix_xmit_submit_lmt_release(const rte_iova_t io_addr)
+{
+ return roc_lmt_submit_ldeorl(io_addr);
+}
+
+static __rte_always_inline uint16_t
+cn9k_nix_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t pkts,
+ uint64_t *cmd, const uint16_t flags)
+{
+ struct cn9k_eth_txq *txq = tx_queue;
+ const rte_iova_t io_addr = txq->io_addr;
+ void *lmt_addr = txq->lmt_addr;
+ uint64_t lso_tun_fmt;
+ uint16_t i;
+
+ NIX_XMIT_FC_OR_RETURN(txq, pkts);
+
+ roc_lmt_mov(cmd, &txq->cmd[0], cn9k_nix_tx_ext_subs(flags));
+
+ /* Perform header writes before barrier for TSO */
+ if (flags & NIX_TX_OFFLOAD_TSO_F) {
+ lso_tun_fmt = txq->lso_tun_fmt;
+
+ for (i = 0; i < pkts; i++)
+ cn9k_nix_xmit_prepare_tso(tx_pkts[i], flags);
+ }
+
+ /* Lets commit any changes in the packet here as no further changes
+ * to the packet will be done unless no fast free is enabled.
+ */
+ if (!(flags & NIX_TX_OFFLOAD_MBUF_NOFF_F))
+ rte_io_wmb();
+
+ for (i = 0; i < pkts; i++) {
+ cn9k_nix_xmit_prepare(tx_pkts[i], cmd, flags, lso_tun_fmt);
+ cn9k_nix_xmit_one(cmd, lmt_addr, io_addr, flags);
+ }
+
+ /* Reduce the cached count */
+ txq->fc_cache_pkts -= pkts;
+
+ return pkts;
+}
+
+#define L3L4CSUM_F NIX_TX_OFFLOAD_L3_L4_CSUM_F
+#define OL3OL4CSUM_F NIX_TX_OFFLOAD_OL3_OL4_CSUM_F
+#define VLAN_F NIX_TX_OFFLOAD_VLAN_QINQ_F
+#define NOFF_F NIX_TX_OFFLOAD_MBUF_NOFF_F
+#define TSO_F NIX_TX_OFFLOAD_TSO_F
+
+/* [TSO] [NOFF] [VLAN] [OL3OL4CSUM] [L3L4CSUM] */
+#define NIX_TX_FASTPATH_MODES \
+T(no_offload, 0, 0, 0, 0, 0, 4, \
+ NIX_TX_OFFLOAD_NONE) \
+T(l3l4csum, 0, 0, 0, 0, 1, 4, \
+ L3L4CSUM_F) \
+T(ol3ol4csum, 0, 0, 0, 1, 0, 4, \
+ OL3OL4CSUM_F) \
+T(ol3ol4csum_l3l4csum, 0, 0, 0, 1, 1, 4, \
+ OL3OL4CSUM_F | L3L4CSUM_F) \
+T(vlan, 0, 0, 1, 0, 0, 6, \
+ VLAN_F) \
+T(vlan_l3l4csum, 0, 0, 1, 0, 1, 6, \
+ VLAN_F | L3L4CSUM_F) \
+T(vlan_ol3ol4csum, 0, 0, 1, 1, 0, 6, \
+ VLAN_F | OL3OL4CSUM_F) \
+T(vlan_ol3ol4csum_l3l4csum, 0, 0, 1, 1, 1, 6, \
+ VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F) \
+T(noff, 0, 1, 0, 0, 0, 4, \
+ NOFF_F) \
+T(noff_l3l4csum, 0, 1, 0, 0, 1, 4, \
+ NOFF_F | L3L4CSUM_F) \
+T(noff_ol3ol4csum, 0, 1, 0, 1, 0, 4, \
+ NOFF_F | OL3OL4CSUM_F) \
+T(noff_ol3ol4csum_l3l4csum, 0, 1, 0, 1, 1, 4, \
+ NOFF_F | OL3OL4CSUM_F | L3L4CSUM_F) \
+T(noff_vlan, 0, 1, 1, 0, 0, 6, \
+ NOFF_F | VLAN_F) \
+T(noff_vlan_l3l4csum, 0, 1, 1, 0, 1, 6, \
+ NOFF_F | VLAN_F | L3L4CSUM_F) \
+T(noff_vlan_ol3ol4csum, 0, 1, 1, 1, 0, 6, \
+ NOFF_F | VLAN_F | OL3OL4CSUM_F) \
+T(noff_vlan_ol3ol4csum_l3l4csum, 0, 1, 1, 1, 1, 6, \
+ NOFF_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F) \
+T(tso, 1, 0, 0, 0, 0, 6, \
+ TSO_F) \
+T(tso_l3l4csum, 1, 0, 0, 0, 1, 6, \
+ TSO_F | L3L4CSUM_F) \
+T(tso_ol3ol4csum, 1, 0, 0, 1, 0, 6, \
+ TSO_F | OL3OL4CSUM_F) \
+T(tso_ol3ol4csum_l3l4csum, 1, 0, 0, 1, 1, 6, \
+ TSO_F | OL3OL4CSUM_F | L3L4CSUM_F) \
+T(tso_vlan, 1, 0, 1, 0, 0, 6, \
+ TSO_F | VLAN_F) \
+T(tso_vlan_l3l4csum, 1, 0, 1, 0, 1, 6, \
+ TSO_F | VLAN_F | L3L4CSUM_F) \
+T(tso_vlan_ol3ol4csum, 1, 0, 1, 1, 0, 6, \
+ TSO_F | VLAN_F | OL3OL4CSUM_F) \
+T(tso_vlan_ol3ol4csum_l3l4csum, 1, 0, 1, 1, 1, 6, \
+ TSO_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F) \
+T(tso_noff, 1, 1, 0, 0, 0, 6, \
+ TSO_F | NOFF_F) \
+T(tso_noff_l3l4csum, 1, 1, 0, 0, 1, 6, \
+ TSO_F | NOFF_F | L3L4CSUM_F) \
+T(tso_noff_ol3ol4csum, 1, 1, 0, 1, 0, 6, \
+ TSO_F | NOFF_F | OL3OL4CSUM_F) \
+T(tso_noff_ol3ol4csum_l3l4csum, 1, 1, 0, 1, 1, 6, \
+ TSO_F | NOFF_F | OL3OL4CSUM_F | L3L4CSUM_F) \
+T(tso_noff_vlan, 1, 1, 1, 0, 0, 6, \
+ TSO_F | NOFF_F | VLAN_F) \
+T(tso_noff_vlan_l3l4csum, 1, 1, 1, 0, 1, 6, \
+ TSO_F | NOFF_F | VLAN_F | L3L4CSUM_F) \
+T(tso_noff_vlan_ol3ol4csum, 1, 1, 1, 1, 0, 6, \
+ TSO_F | NOFF_F | VLAN_F | OL3OL4CSUM_F) \
+T(tso_noff_vlan_ol3ol4csum_l3l4csum, 1, 1, 1, 1, 1, 6, \
+ TSO_F | NOFF_F | VLAN_F | OL3OL4CSUM_F | L3L4CSUM_F)
+
+#define T(name, f4, f3, f2, f1, f0, sz, flags) \
+ uint16_t __rte_noinline __rte_hot cn9k_nix_xmit_pkts_##name( \
+ void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t pkts);
+
+NIX_TX_FASTPATH_MODES
+#undef T
+
#endif /* __CN9K_TX_H__ */
git.droids-corp.org / dpdk.git / commitdiff