From: Hemant Agrawal Date: Thu, 22 Jun 2017 13:57:17 +0000 (+0530) Subject: net/dpaa2: add support for multi seg buffers X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=774e9ea919923143e0b93628ae10abf3e2a345d9;p=dpdk.git net/dpaa2: add support for multi seg buffers Signed-off-by: Hemant Agrawal --- diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h index 429eaee158..f9f4e295e3 100644 --- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h +++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h @@ -156,6 +156,19 @@ struct qbman_fle { uint32_t reserved[3]; /* Not used currently */ }; +struct qbman_sge { + uint32_t addr_lo; + uint32_t addr_hi; + uint32_t length; + uint32_t fin_bpid_offset; +}; + +/* There are three types of frames: Single, Scatter Gather and Frame Lists */ +enum qbman_fd_format { + qbman_fd_single = 0, + qbman_fd_list, + qbman_fd_sg +}; /*Macros to define operations on FD*/ #define DPAA2_SET_FD_ADDR(fd, addr) do { \ fd->simple.addr_lo = lower_32_bits((uint64_t)(addr)); \ @@ -185,7 +198,7 @@ struct qbman_fle { #define DPAA2_SET_FLE_OFFSET(fle, offset) \ ((fle)->fin_bpid_offset |= (uint32_t)(offset) << 16) #define DPAA2_SET_FLE_BPID(fle, bpid) ((fle)->fin_bpid_offset |= (uint64_t)bpid) -#define DPAA2_GET_FLE_BPID(fle, bpid) (fle->fin_bpid_offset & 0x000000ff) +#define DPAA2_GET_FLE_BPID(fle) ((fle)->fin_bpid_offset & 0x000000ff) #define DPAA2_SET_FLE_FIN(fle) (fle->fin_bpid_offset |= (uint64_t)1 << 31) #define DPAA2_SET_FLE_IVP(fle) (((fle)->fin_bpid_offset |= 0x00004000)) #define DPAA2_SET_FD_COMPOUND_FMT(fd) \ @@ -197,6 +210,7 @@ struct qbman_fle { #define DPAA2_GET_FD_BPID(fd) (((fd)->simple.bpid_offset & 0x00003FFF)) #define DPAA2_GET_FD_IVP(fd) ((fd->simple.bpid_offset & 0x00004000) >> 14) #define DPAA2_GET_FD_OFFSET(fd) (((fd)->simple.bpid_offset & 0x0FFF0000) >> 16) +#define DPAA2_GET_FLE_OFFSET(fle) (((fle)->fin_bpid_offset & 0x0FFF0000) >> 16) #define DPAA2_SET_FLE_SG_EXT(fle) (fle->fin_bpid_offset |= (uint64_t)1 << 29) #define DPAA2_IS_SET_FLE_SG_EXT(fle) \ ((fle->fin_bpid_offset & ((uint64_t)1 << 29)) ? 1 : 0) @@ -206,6 +220,17 @@ struct qbman_fle { #define DPAA2_ASAL_VAL (DPAA2_MBUF_HW_ANNOTATION / 64) +#define DPAA2_FD_SET_FORMAT(fd, format) do { \ + (fd)->simple.bpid_offset &= 0xCFFFFFFF; \ + (fd)->simple.bpid_offset |= (uint32_t)format << 28; \ +} while (0) +#define DPAA2_FD_GET_FORMAT(fd) (((fd)->simple.bpid_offset >> 28) & 0x3) + +#define DPAA2_SG_SET_FINAL(sg, fin) do { \ + (sg)->fin_bpid_offset &= 0x7FFFFFFF; \ + (sg)->fin_bpid_offset |= (uint32_t)fin << 31; \ +} while (0) +#define DPAA2_SG_IS_FINAL(sg) (!!((sg)->fin_bpid_offset >> 31)) /* Only Enqueue Error responses will be * pushed on FQID_ERR of Enqueue FQ */ diff --git a/drivers/net/dpaa2/dpaa2_rxtx.c b/drivers/net/dpaa2/dpaa2_rxtx.c index e4bf14a0ca..6572f2577d 100644 --- a/drivers/net/dpaa2/dpaa2_rxtx.c +++ b/drivers/net/dpaa2/dpaa2_rxtx.c @@ -132,6 +132,66 @@ dpaa2_dev_rx_offload(uint64_t hw_annot_addr, struct rte_mbuf *mbuf) mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD; } +static inline struct rte_mbuf *__attribute__((hot)) +eth_sg_fd_to_mbuf(const struct qbman_fd *fd) +{ + struct qbman_sge *sgt, *sge; + dma_addr_t sg_addr; + int i = 0; + uint64_t fd_addr; + struct rte_mbuf *first_seg, *next_seg, *cur_seg, *temp; + + fd_addr = (uint64_t)DPAA2_IOVA_TO_VADDR(DPAA2_GET_FD_ADDR(fd)); + + /* Get Scatter gather table address */ + sgt = (struct qbman_sge *)(fd_addr + DPAA2_GET_FD_OFFSET(fd)); + + sge = &sgt[i++]; + sg_addr = (uint64_t)DPAA2_IOVA_TO_VADDR(DPAA2_GET_FLE_ADDR(sge)); + + /* First Scatter gather entry */ + first_seg = DPAA2_INLINE_MBUF_FROM_BUF(sg_addr, + rte_dpaa2_bpid_info[DPAA2_GET_FD_BPID(fd)].meta_data_size); + /* Prepare all the metadata for first segment */ + first_seg->buf_addr = (uint8_t *)sg_addr; + first_seg->ol_flags = 0; + first_seg->data_off = DPAA2_GET_FLE_OFFSET(sge); + first_seg->data_len = sge->length & 0x1FFFF; + first_seg->pkt_len = DPAA2_GET_FD_LEN(fd); + first_seg->nb_segs = 1; + first_seg->next = NULL; + + first_seg->packet_type = dpaa2_dev_rx_parse( + (uint64_t)DPAA2_IOVA_TO_VADDR(DPAA2_GET_FD_ADDR(fd)) + + DPAA2_FD_PTA_SIZE); + dpaa2_dev_rx_offload((uint64_t)DPAA2_IOVA_TO_VADDR( + DPAA2_GET_FD_ADDR(fd)) + + DPAA2_FD_PTA_SIZE, first_seg); + rte_mbuf_refcnt_set(first_seg, 1); + cur_seg = first_seg; + while (!DPAA2_SG_IS_FINAL(sge)) { + sge = &sgt[i++]; + sg_addr = (uint64_t)DPAA2_IOVA_TO_VADDR( + DPAA2_GET_FLE_ADDR(sge)); + next_seg = DPAA2_INLINE_MBUF_FROM_BUF(sg_addr, + rte_dpaa2_bpid_info[DPAA2_GET_FLE_BPID(sge)].meta_data_size); + next_seg->buf_addr = (uint8_t *)sg_addr; + next_seg->data_off = DPAA2_GET_FLE_OFFSET(sge); + next_seg->data_len = sge->length & 0x1FFFF; + first_seg->nb_segs += 1; + rte_mbuf_refcnt_set(next_seg, 1); + cur_seg->next = next_seg; + next_seg->next = NULL; + cur_seg = next_seg; + } + temp = DPAA2_INLINE_MBUF_FROM_BUF(fd_addr, + rte_dpaa2_bpid_info[DPAA2_GET_FD_BPID(fd)].meta_data_size); + rte_mbuf_refcnt_set(temp, 1); + rte_pktmbuf_free_seg(temp); + + return (void *)first_seg; +} + static inline struct rte_mbuf *__attribute__((hot)) eth_fd_to_mbuf(const struct qbman_fd *fd) { @@ -171,7 +231,81 @@ eth_fd_to_mbuf(const struct qbman_fd *fd) return mbuf; } -static void __rte_noinline __attribute__((hot)) +static int __attribute__ ((noinline)) __attribute__((hot)) +eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf, + struct qbman_fd *fd, uint16_t bpid) +{ + struct rte_mbuf *cur_seg = mbuf, *prev_seg, *mi, *temp; + struct qbman_sge *sgt, *sge = NULL; + int i; + + /* First Prepare FD to be transmited*/ + /* Resetting the buffer pool id and offset field*/ + fd->simple.bpid_offset = 0; + + temp = rte_pktmbuf_alloc(mbuf->pool); + if (temp == NULL) { + PMD_TX_LOG(ERR, "No memory to allocate S/G table"); + return -ENOMEM; + } + + DPAA2_SET_FD_ADDR(fd, DPAA2_MBUF_VADDR_TO_IOVA(temp)); + DPAA2_SET_FD_LEN(fd, mbuf->pkt_len); + DPAA2_SET_FD_OFFSET(fd, temp->data_off); + DPAA2_SET_FD_BPID(fd, bpid); + DPAA2_SET_FD_ASAL(fd, DPAA2_ASAL_VAL); + DPAA2_FD_SET_FORMAT(fd, qbman_fd_sg); + /*Set Scatter gather table and Scatter gather entries*/ + sgt = (struct qbman_sge *)( + (uint64_t)DPAA2_IOVA_TO_VADDR(DPAA2_GET_FD_ADDR(fd)) + + DPAA2_GET_FD_OFFSET(fd)); + + for (i = 0; i < mbuf->nb_segs; i++) { + sge = &sgt[i]; + /*Resetting the buffer pool id and offset field*/ + sge->fin_bpid_offset = 0; + DPAA2_SET_FLE_ADDR(sge, DPAA2_MBUF_VADDR_TO_IOVA(cur_seg)); + DPAA2_SET_FLE_OFFSET(sge, cur_seg->data_off); + sge->length = cur_seg->data_len; + if (RTE_MBUF_DIRECT(cur_seg)) { + if (rte_mbuf_refcnt_read(cur_seg) > 1) { + /* If refcnt > 1, invalid bpid is set to ensure + * buffer is not freed by HW + */ + DPAA2_SET_FLE_IVP(sge); + rte_mbuf_refcnt_update(cur_seg, -1); + } else + DPAA2_SET_FLE_BPID(sge, + mempool_to_bpid(cur_seg->pool)); + cur_seg = cur_seg->next; + } else { + /* Get owner MBUF from indirect buffer */ + mi = rte_mbuf_from_indirect(cur_seg); + if (rte_mbuf_refcnt_read(mi) > 1) { + /* If refcnt > 1, invalid bpid is set to ensure + * owner buffer is not freed by HW + */ + DPAA2_SET_FLE_IVP(sge); + } else { + DPAA2_SET_FLE_BPID(sge, + mempool_to_bpid(mi->pool)); + rte_mbuf_refcnt_update(mi, 1); + } + prev_seg = cur_seg; + cur_seg = cur_seg->next; + prev_seg->next = NULL; + rte_pktmbuf_free(prev_seg); + } + } + DPAA2_SG_SET_FINAL(sge, true); + return 0; +} + +static void +eth_mbuf_to_fd(struct rte_mbuf *mbuf, + struct qbman_fd *fd, uint16_t bpid) __attribute__((unused)); + +static void __attribute__ ((noinline)) __attribute__((hot)) eth_mbuf_to_fd(struct rte_mbuf *mbuf, struct qbman_fd *fd, uint16_t bpid) { @@ -190,8 +324,22 @@ eth_mbuf_to_fd(struct rte_mbuf *mbuf, DPAA2_GET_FD_OFFSET(fd), DPAA2_GET_FD_ADDR(fd), rte_dpaa2_bpid_info[DPAA2_GET_FD_BPID(fd)].meta_data_size, DPAA2_GET_FD_BPID(fd), DPAA2_GET_FD_LEN(fd)); -} + if (RTE_MBUF_DIRECT(mbuf)) { + if (rte_mbuf_refcnt_read(mbuf) > 1) { + DPAA2_SET_FD_IVP(fd); + rte_mbuf_refcnt_update(mbuf, -1); + } + } else { + struct rte_mbuf *mi; + mi = rte_mbuf_from_indirect(mbuf); + if (rte_mbuf_refcnt_read(mi) > 1) + DPAA2_SET_FD_IVP(fd); + else + rte_mbuf_refcnt_update(mi, 1); + rte_pktmbuf_free(mbuf); + } +} static inline int __attribute__((hot)) eth_copy_mbuf_to_fd(struct rte_mbuf *mbuf, @@ -325,10 +473,11 @@ dpaa2_dev_prefetch_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) rte_prefetch0((void *)((uint64_t)DPAA2_GET_FD_ADDR(fd[num_rx]) + DPAA2_FD_PTA_SIZE + 16)); - bufs[num_rx] = eth_fd_to_mbuf(fd[num_rx]); + if (unlikely(DPAA2_FD_GET_FORMAT(fd[num_rx]) == qbman_fd_sg)) + bufs[num_rx] = eth_sg_fd_to_mbuf(fd[num_rx]); + else + bufs[num_rx] = eth_fd_to_mbuf(fd[num_rx]); bufs[num_rx]->port = dev->data->port_id; - if (dev->data->dev_conf.rxmode.hw_vlan_strip) - rte_vlan_strip(bufs[num_rx]); if (dev->data->dev_conf.rxmode.hw_vlan_strip) rte_vlan_strip(bufs[num_rx]); @@ -379,6 +528,7 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) uint32_t loop; int32_t ret; struct qbman_fd fd_arr[MAX_TX_RING_SLOTS]; + struct rte_mbuf *mi; uint32_t frames_to_send; struct rte_mempool *mp; struct qbman_eq_desc eqdesc; @@ -419,8 +569,17 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) fd_arr[loop].simple.frc = 0; DPAA2_RESET_FD_CTRL((&fd_arr[loop])); DPAA2_SET_FD_FLC((&fd_arr[loop]), NULL); - mp = (*bufs)->pool; + if (RTE_MBUF_DIRECT(*bufs)) { + mp = (*bufs)->pool; + } else { + mi = rte_mbuf_from_indirect(*bufs); + mp = mi->pool; + } /* Not a hw_pkt pool allocated frame */ + if (!mp) { + PMD_TX_LOG(ERR, "err: no bpool attached"); + goto skip_tx; + } if (mp->ops_index != priv->bp_list->dpaa2_ops_index) { PMD_TX_LOG(ERR, "non hw offload bufffer "); /* alloc should be from the default buffer pool @@ -429,11 +588,16 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) if (priv->bp_list) { bpid = priv->bp_list->buf_pool.bpid; } else { - PMD_TX_LOG(ERR, "errr: why no bpool" - " attached"); + PMD_TX_LOG(ERR, + "err: no bpool attached"); num_tx = 0; goto skip_tx; } + if (unlikely((*bufs)->nb_segs > 1)) { + PMD_TX_LOG(ERR, "S/G support not added" + " for non hw offload buffer"); + goto skip_tx; + } if (eth_copy_mbuf_to_fd(*bufs, &fd_arr[loop], bpid)) { bufs++; @@ -441,7 +605,14 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts) } } else { bpid = mempool_to_bpid(mp); - eth_mbuf_to_fd(*bufs, &fd_arr[loop], bpid); + if (unlikely((*bufs)->nb_segs > 1)) { + if (eth_mbuf_to_sg_fd(*bufs, + &fd_arr[loop], bpid)) + goto skip_tx; + } else { + eth_mbuf_to_fd(*bufs, + &fd_arr[loop], bpid); + } } bufs++; }