1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 Cavium, Inc
5 #ifndef __OCTEONTX_RXTX_H__
6 #define __OCTEONTX_RXTX_H__
8 #include <rte_ethdev_driver.h>
10 #define OFFLOAD_FLAGS \
11 uint16_t rx_offload_flags; \
12 uint16_t tx_offload_flags
14 #define BIT(nr) (1UL << (nr))
16 #define OCCTX_RX_OFFLOAD_NONE (0)
17 #define OCCTX_RX_OFFLOAD_RSS_F BIT(0)
18 #define OCCTX_RX_MULTI_SEG_F BIT(15)
20 #define OCCTX_TX_OFFLOAD_NONE (0)
21 #define OCCTX_TX_OFFLOAD_MBUF_NOFF_F BIT(3)
23 #define OCCTX_TX_MULTI_SEG_F BIT(15)
24 /* Packet type table */
25 #define PTYPE_SIZE OCCTX_PKI_LTYPE_LAST
27 static const uint32_t __rte_cache_aligned
28 ptype_table[PTYPE_SIZE][PTYPE_SIZE][PTYPE_SIZE] = {
29 [LC_NONE][LE_NONE][LF_NONE] = RTE_PTYPE_UNKNOWN,
30 [LC_NONE][LE_NONE][LF_IPSEC_ESP] = RTE_PTYPE_UNKNOWN,
31 [LC_NONE][LE_NONE][LF_IPFRAG] = RTE_PTYPE_L4_FRAG,
32 [LC_NONE][LE_NONE][LF_IPCOMP] = RTE_PTYPE_UNKNOWN,
33 [LC_NONE][LE_NONE][LF_TCP] = RTE_PTYPE_L4_TCP,
34 [LC_NONE][LE_NONE][LF_UDP] = RTE_PTYPE_L4_UDP,
35 [LC_NONE][LE_NONE][LF_GRE] = RTE_PTYPE_TUNNEL_GRE,
36 [LC_NONE][LE_NONE][LF_UDP_GENEVE] = RTE_PTYPE_TUNNEL_GENEVE,
37 [LC_NONE][LE_NONE][LF_UDP_VXLAN] = RTE_PTYPE_TUNNEL_VXLAN,
38 [LC_NONE][LE_NONE][LF_NVGRE] = RTE_PTYPE_TUNNEL_NVGRE,
40 [LC_IPV4][LE_NONE][LF_NONE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_UNKNOWN,
41 [LC_IPV4][LE_NONE][LF_IPSEC_ESP] =
42 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L3_IPV4,
43 [LC_IPV4][LE_NONE][LF_IPFRAG] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG,
44 [LC_IPV4][LE_NONE][LF_IPCOMP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_UNKNOWN,
45 [LC_IPV4][LE_NONE][LF_TCP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP,
46 [LC_IPV4][LE_NONE][LF_UDP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP,
47 [LC_IPV4][LE_NONE][LF_GRE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_GRE,
48 [LC_IPV4][LE_NONE][LF_UDP_GENEVE] =
49 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_GENEVE,
50 [LC_IPV4][LE_NONE][LF_UDP_VXLAN] =
51 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_VXLAN,
52 [LC_IPV4][LE_NONE][LF_NVGRE] =
53 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_NVGRE,
55 [LC_IPV4_OPT][LE_NONE][LF_NONE] =
56 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_UNKNOWN,
57 [LC_IPV4_OPT][LE_NONE][LF_IPSEC_ESP] =
58 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L3_IPV4,
59 [LC_IPV4_OPT][LE_NONE][LF_IPFRAG] =
60 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_FRAG,
61 [LC_IPV4_OPT][LE_NONE][LF_IPCOMP] =
62 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_UNKNOWN,
63 [LC_IPV4_OPT][LE_NONE][LF_TCP] =
64 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP,
65 [LC_IPV4_OPT][LE_NONE][LF_UDP] =
66 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP,
67 [LC_IPV4_OPT][LE_NONE][LF_GRE] =
68 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_GRE,
69 [LC_IPV4_OPT][LE_NONE][LF_UDP_GENEVE] =
70 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_GENEVE,
71 [LC_IPV4_OPT][LE_NONE][LF_UDP_VXLAN] =
72 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_VXLAN,
73 [LC_IPV4_OPT][LE_NONE][LF_NVGRE] =
74 RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_NVGRE,
76 [LC_IPV6][LE_NONE][LF_NONE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_UNKNOWN,
77 [LC_IPV6][LE_NONE][LF_IPSEC_ESP] =
78 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L3_IPV4,
79 [LC_IPV6][LE_NONE][LF_IPFRAG] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG,
80 [LC_IPV6][LE_NONE][LF_IPCOMP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_UNKNOWN,
81 [LC_IPV6][LE_NONE][LF_TCP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP,
82 [LC_IPV6][LE_NONE][LF_UDP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP,
83 [LC_IPV6][LE_NONE][LF_GRE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_GRE,
84 [LC_IPV6][LE_NONE][LF_UDP_GENEVE] =
85 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_GENEVE,
86 [LC_IPV6][LE_NONE][LF_UDP_VXLAN] =
87 RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_VXLAN,
88 [LC_IPV6][LE_NONE][LF_NVGRE] =
89 RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_NVGRE,
90 [LC_IPV6_OPT][LE_NONE][LF_NONE] =
91 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_UNKNOWN,
92 [LC_IPV6_OPT][LE_NONE][LF_IPSEC_ESP] =
93 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L3_IPV4,
94 [LC_IPV6_OPT][LE_NONE][LF_IPFRAG] =
95 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_FRAG,
96 [LC_IPV6_OPT][LE_NONE][LF_IPCOMP] =
97 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_UNKNOWN,
98 [LC_IPV6_OPT][LE_NONE][LF_TCP] =
99 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP,
100 [LC_IPV6_OPT][LE_NONE][LF_UDP] =
101 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP,
102 [LC_IPV6_OPT][LE_NONE][LF_GRE] =
103 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_GRE,
104 [LC_IPV6_OPT][LE_NONE][LF_UDP_GENEVE] =
105 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_GENEVE,
106 [LC_IPV6_OPT][LE_NONE][LF_UDP_VXLAN] =
107 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_VXLAN,
108 [LC_IPV6_OPT][LE_NONE][LF_NVGRE] =
109 RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_NVGRE,
114 static __rte_always_inline uint64_t
115 octeontx_pktmbuf_detach(struct rte_mbuf *m)
117 struct rte_mempool *mp = m->pool;
118 uint32_t mbuf_size, buf_len;
123 /* Update refcount of direct mbuf */
124 md = rte_mbuf_from_indirect(m);
125 refcount = rte_mbuf_refcnt_update(md, -1);
127 priv_size = rte_pktmbuf_priv_size(mp);
128 mbuf_size = (uint32_t)(sizeof(struct rte_mbuf) + priv_size);
129 buf_len = rte_pktmbuf_data_room_size(mp);
131 m->priv_size = priv_size;
132 m->buf_addr = (char *)m + mbuf_size;
133 m->buf_iova = rte_mempool_virt2iova(m) + mbuf_size;
134 m->buf_len = (uint16_t)buf_len;
135 rte_pktmbuf_reset_headroom(m);
141 /* Now indirect mbuf is safe to free */
145 rte_mbuf_refcnt_set(md, 1);
156 static __rte_always_inline uint64_t
157 octeontx_prefree_seg(struct rte_mbuf *m)
159 if (likely(rte_mbuf_refcnt_read(m) == 1)) {
160 if (!RTE_MBUF_DIRECT(m))
161 return octeontx_pktmbuf_detach(m);
166 } else if (rte_mbuf_refcnt_update(m, -1) == 0) {
167 if (!RTE_MBUF_DIRECT(m))
168 return octeontx_pktmbuf_detach(m);
170 rte_mbuf_refcnt_set(m, 1);
176 /* Mbuf is having refcount more than 1 so need not to be freed */
180 static __rte_always_inline uint16_t
181 __octeontx_xmit_prepare(struct rte_mbuf *tx_pkt, uint64_t *cmd_buf,
184 uint16_t gaura_id, nb_desc = 0;
186 /* Setup PKO_SEND_HDR_S */
187 cmd_buf[nb_desc++] = tx_pkt->data_len & 0xffff;
188 cmd_buf[nb_desc++] = 0x0;
190 /* SEND_HDR[DF] bit controls if buffer is to be freed or
191 * not, as SG_DESC[I] and SEND_HDR[II] are clear.
193 if (flag & OCCTX_TX_OFFLOAD_MBUF_NOFF_F)
194 cmd_buf[0] |= (octeontx_prefree_seg(tx_pkt) <<
197 /* Mark mempool object as "put" since it is freed by PKO */
198 if (!(cmd_buf[0] & (1ULL << 58)))
199 __mempool_check_cookies(tx_pkt->pool, (void **)&tx_pkt,
201 /* Get the gaura Id */
202 gaura_id = octeontx_fpa_bufpool_gpool((uintptr_t)
203 tx_pkt->pool->pool_id);
205 /* Setup PKO_SEND_BUFLINK_S */
206 cmd_buf[nb_desc++] = PKO_SEND_BUFLINK_SUBDC |
207 PKO_SEND_BUFLINK_LDTYPE(0x1ull) |
208 PKO_SEND_BUFLINK_GAUAR((long)gaura_id) |
210 cmd_buf[nb_desc++] = rte_mbuf_data_iova(tx_pkt);
215 static __rte_always_inline uint16_t
216 __octeontx_xmit_mseg_prepare(struct rte_mbuf *tx_pkt, uint64_t *cmd_buf,
219 uint16_t nb_segs, nb_desc = 0;
220 uint16_t gaura_id, len = 0;
221 struct rte_mbuf *m_next = NULL;
223 nb_segs = tx_pkt->nb_segs;
224 /* Setup PKO_SEND_HDR_S */
225 cmd_buf[nb_desc++] = tx_pkt->pkt_len & 0xffff;
226 cmd_buf[nb_desc++] = 0x0;
229 m_next = tx_pkt->next;
230 /* To handle case where mbufs belong to diff pools, like
233 gaura_id = octeontx_fpa_bufpool_gpool((uintptr_t)
234 tx_pkt->pool->pool_id);
236 /* Setup PKO_SEND_GATHER_S */
237 cmd_buf[nb_desc] = PKO_SEND_GATHER_SUBDC |
238 PKO_SEND_GATHER_LDTYPE(0x1ull) |
239 PKO_SEND_GATHER_GAUAR((long)gaura_id) |
242 /* SG_DESC[I] bit controls if buffer is to be freed or
243 * not, as SEND_HDR[DF] and SEND_HDR[II] are clear.
245 if (flag & OCCTX_TX_OFFLOAD_MBUF_NOFF_F) {
247 (octeontx_prefree_seg(tx_pkt) << 57);
250 /* Mark mempool object as "put" since it is freed by
253 if (!(cmd_buf[nb_desc] & (1ULL << 57))) {
255 __mempool_check_cookies(tx_pkt->pool,
256 (void **)&tx_pkt, 1, 0);
260 cmd_buf[nb_desc++] = rte_mbuf_data_iova(tx_pkt);
263 len += tx_pkt->data_len;
270 static __rte_always_inline uint16_t
271 __octeontx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
272 uint16_t nb_pkts, uint64_t *cmd_buf,
273 const uint16_t flags)
275 struct octeontx_txq *txq = tx_queue;
276 octeontx_dq_t *dq = &txq->dq;
277 uint16_t count = 0, nb_desc;
280 while (count < nb_pkts) {
281 if (unlikely(*((volatile int64_t *)dq->fc_status_va) < 0))
284 if (flags & OCCTX_TX_MULTI_SEG_F) {
285 nb_desc = __octeontx_xmit_mseg_prepare(tx_pkts[count],
288 nb_desc = __octeontx_xmit_prepare(tx_pkts[count],
292 octeontx_reg_lmtst(dq->lmtline_va, dq->ioreg_va, cmd_buf,
301 octeontx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
303 #define NOFF_F OCCTX_TX_OFFLOAD_MBUF_NOFF_F
304 #define MULT_F OCCTX_TX_MULTI_SEG_F
305 /* [NOFF] [MULTI_SEG] */
306 #define OCCTX_TX_FASTPATH_MODES \
307 T(no_offload, 0, 0, 4, OCCTX_TX_OFFLOAD_NONE) \
308 T(mseg, 0, 1, 14, MULT_F) \
309 T(noff, 1, 0, 4, NOFF_F) \
310 T(noff_mseg, 1, 1, 14, NOFF_F | MULT_F)
312 #endif /* __OCTEONTX_RXTX_H__ */