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numam-dpdk/drivers/net/dpaa/dpaa_rxtx.c
Santosh Shukla 455da54539 mbuf: rename physical address to IOVA 
Rename buf_physaddr to buf_iova.
Keep the deprecated name in an anonymous union to avoid breaking
the API.

Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Reviewed-by: Anatoly Burakov <anatoly.burakov@intel.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
2017-11-06 22:44:26 +01:00

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/*-
* BSD LICENSE
*
* Copyright 2016 Freescale Semiconductor, Inc. All rights reserved.
* Copyright 2017 NXP.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Freescale Semiconductor, Inc nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* System headers */
#include <inttypes.h>
#include <unistd.h>
#include <stdio.h>
#include <limits.h>
#include <sched.h>
#include <pthread.h>
#include <rte_byteorder.h>
#include <rte_common.h>
#include <rte_interrupts.h>
#include <rte_log.h>
#include <rte_debug.h>
#include <rte_pci.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_memory.h>
#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_alarm.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_malloc.h>
#include <rte_ring.h>
#include <rte_ip.h>
#include <rte_tcp.h>
#include <rte_udp.h>
#include "dpaa_ethdev.h"
#include "dpaa_rxtx.h"
#include <rte_dpaa_bus.h>
#include <dpaa_mempool.h>
#include <fsl_usd.h>
#include <fsl_qman.h>
#include <fsl_bman.h>
#include <of.h>
#include <netcfg.h>
#define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
do { \
(_fd)->cmd = 0; \
(_fd)->opaque_addr = 0; \
(_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
(_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
(_fd)->opaque |= (_mbuf)->pkt_len; \
(_fd)->addr = (_mbuf)->buf_iova; \
(_fd)->bpid = _bpid; \
} while (0)
#if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
void dpaa_display_frame(const struct qm_fd *fd)
{
int ii;
char *ptr;
printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
__func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
fd->offset, fd->length20, fd->status);
ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
ptr += fd->offset;
printf("%02x ", *ptr);
for (ii = 1; ii < fd->length20; ii++) {
printf("%02x ", *ptr);
if ((ii % 16) == 0)
printf("\n");
ptr++;
}
printf("\n");
}
#else
#define dpaa_display_frame(a)
#endif
static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
uint64_t prs __rte_unused)
{
DPAA_DP_LOG(DEBUG, "Slow parsing");
/*TBD:XXX: to be implemented*/
}
static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
uint64_t fd_virt_addr)
{
struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
switch (prs) {
case DPAA_PKT_TYPE_NONE:
m->packet_type = 0;
break;
case DPAA_PKT_TYPE_ETHER:
m->packet_type = RTE_PTYPE_L2_ETHER;
break;
case DPAA_PKT_TYPE_IPV4:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4;
break;
case DPAA_PKT_TYPE_IPV6:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6;
break;
case DPAA_PKT_TYPE_IPV4_FRAG:
case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
break;
case DPAA_PKT_TYPE_IPV6_FRAG:
case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
break;
case DPAA_PKT_TYPE_IPV4_EXT:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4_EXT;
break;
case DPAA_PKT_TYPE_IPV6_EXT:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6_EXT;
break;
case DPAA_PKT_TYPE_IPV4_TCP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
break;
case DPAA_PKT_TYPE_IPV6_TCP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
break;
case DPAA_PKT_TYPE_IPV4_UDP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
break;
case DPAA_PKT_TYPE_IPV6_UDP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
break;
case DPAA_PKT_TYPE_IPV4_EXT_UDP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
break;
case DPAA_PKT_TYPE_IPV6_EXT_UDP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
break;
case DPAA_PKT_TYPE_IPV4_EXT_TCP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
break;
case DPAA_PKT_TYPE_IPV6_EXT_TCP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
break;
case DPAA_PKT_TYPE_IPV4_SCTP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
break;
case DPAA_PKT_TYPE_IPV6_SCTP:
m->packet_type = RTE_PTYPE_L2_ETHER |
RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
break;
/* More switch cases can be added */
default:
dpaa_slow_parsing(m, prs);
}
m->tx_offload = annot->parse.ip_off[0];
m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
<< DPAA_PKT_L3_LEN_SHIFT;
/* Set the hash values */
m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash));
m->ol_flags = PKT_RX_RSS_HASH;
/* All packets with Bad checksum are dropped by interface (and
* corresponding notification issued to RX error queues).
*/
m->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
/* Check if Vlan is present */
if (prs & DPAA_PARSE_VLAN_MASK)
m->ol_flags |= PKT_RX_VLAN;
/* Packet received without stripping the vlan */
}
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;
DPAA_DP_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;
DPAA_DP_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;
}
struct rte_mbuf *
dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid)
{
struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
struct qm_sg_entry *sgt, *sg_temp;
void *vaddr, *sg_vaddr;
int i = 0;
uint8_t fd_offset = fd->offset;
DPAA_DP_LOG(DEBUG, "Received an SG frame");
vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
if (!vaddr) {
DPAA_PMD_ERR("unable to convert physical address");
return NULL;
}
sgt = vaddr + fd_offset;
sg_temp = &sgt[i++];
hw_sg_to_cpu(sg_temp);
temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
bp_info->meta_data_size);
first_seg->data_off = sg_temp->offset;
first_seg->data_len = sg_temp->length;
first_seg->pkt_len = sg_temp->length;
rte_mbuf_refcnt_set(first_seg, 1);
first_seg->port = ifid;
first_seg->nb_segs = 1;
first_seg->ol_flags = 0;
prev_seg = first_seg;
while (i < DPAA_SGT_MAX_ENTRIES) {
sg_temp = &sgt[i++];
hw_sg_to_cpu(sg_temp);
sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
bp_info->meta_data_size);
cur_seg->data_off = sg_temp->offset;
cur_seg->data_len = sg_temp->length;
first_seg->pkt_len += sg_temp->length;
first_seg->nb_segs += 1;
rte_mbuf_refcnt_set(cur_seg, 1);
prev_seg->next = cur_seg;
if (sg_temp->final) {
cur_seg->next = NULL;
break;
}
prev_seg = cur_seg;
}
dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
rte_pktmbuf_free_seg(temp);
return first_seg;
}
static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd,
uint32_t ifid)
{
struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
struct rte_mbuf *mbuf;
void *ptr;
uint8_t format =
(fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
uint16_t offset =
(fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK;
DPAA_DP_LOG(DEBUG, " FD--->MBUF");
if (unlikely(format == qm_fd_sg))
return dpaa_eth_sg_to_mbuf(fd, ifid);
/* Ignoring case when format != qm_fd_contig */
dpaa_display_frame(fd);
ptr = rte_dpaa_mem_ptov(fd->addr);
/* Ignoring case when ptr would be NULL. That is only possible incase
* of a corrupted packet
*/
mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
/* Prefetch the Parse results and packet data to L1 */
rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
rte_prefetch0((void *)((uint8_t *)ptr + offset));
mbuf->data_off = offset;
mbuf->data_len = length;
mbuf->pkt_len = length;
mbuf->port = ifid;
mbuf->nb_segs = 1;
mbuf->ol_flags = 0;
mbuf->next = NULL;
rte_mbuf_refcnt_set(mbuf, 1);
dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
return mbuf;
}
uint16_t dpaa_eth_queue_rx(void *q,
struct rte_mbuf **bufs,
uint16_t nb_bufs)
{
struct qman_fq *fq = q;
struct qm_dqrr_entry *dq;
uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
int ret;
ret = rte_dpaa_portal_init((void *)0);
if (ret) {
DPAA_PMD_ERR("Failure in affining portal");
return 0;
}
ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
if (ret)
return 0;
do {
dq = qman_dequeue(fq);
if (!dq)
continue;
bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
qman_dqrr_consume(fq, dq);
} while (fq->flags & QMAN_FQ_STATE_VDQCR);
return num_rx;
}
static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
{
int ret;
uint64_t buf = 0;
struct bm_buffer bufs;
ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
if (ret <= 0) {
DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
return (void *)buf;
}
DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
(uint64_t)bufs.addr, bufs.bpid);
buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
if (!buf)
goto out;
out:
return (void *)buf;
}
static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
struct dpaa_if *dpaa_intf)
{
struct rte_mbuf *dpaa_mbuf;
/* allocate pktbuffer on bpid for dpaa port */
dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
if (!dpaa_mbuf)
return NULL;
memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *)
((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
/* Copy only the required fields */
dpaa_mbuf->data_off = mbuf->data_off;
dpaa_mbuf->pkt_len = mbuf->pkt_len;
dpaa_mbuf->ol_flags = mbuf->ol_flags;
dpaa_mbuf->packet_type = mbuf->packet_type;
dpaa_mbuf->tx_offload = mbuf->tx_offload;
rte_pktmbuf_free(mbuf);
return dpaa_mbuf;
}
int
dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
struct qm_fd *fd,
uint32_t bpid)
{
struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
struct rte_mbuf *temp, *mi;
struct qm_sg_entry *sg_temp, *sgt;
int i = 0;
DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
temp = rte_pktmbuf_alloc(bp_info->mp);
if (!temp) {
DPAA_PMD_ERR("Failure in allocation of mbuf");
return -1;
}
if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
+ temp->data_off)) {
DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
return -1;
}
fd->cmd = 0;
fd->opaque_addr = 0;
if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
if (temp->data_off < DEFAULT_TX_ICEOF
+ sizeof(struct dpaa_eth_parse_results_t))
temp->data_off = DEFAULT_TX_ICEOF
+ sizeof(struct dpaa_eth_parse_results_t);
dcbz_64(temp->buf_addr);
dpaa_checksum_offload(mbuf, fd, temp->buf_addr);
}
sgt = temp->buf_addr + temp->data_off;
fd->format = QM_FD_SG;
fd->addr = temp->buf_iova;
fd->offset = temp->data_off;
fd->bpid = bpid;
fd->length20 = mbuf->pkt_len;
while (i < DPAA_SGT_MAX_ENTRIES) {
sg_temp = &sgt[i++];
sg_temp->opaque = 0;
sg_temp->val = 0;
sg_temp->addr = cur_seg->buf_iova;
sg_temp->offset = cur_seg->data_off;
sg_temp->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.
*/
sg_temp->bpid = 0xff;
rte_mbuf_refcnt_update(cur_seg, -1);
} else {
sg_temp->bpid =
DPAA_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.
*/
sg_temp->bpid = 0xff;
} else {
sg_temp->bpid = DPAA_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);
}
if (cur_seg == NULL) {
sg_temp->final = 1;
cpu_to_hw_sg(sg_temp);
break;
}
cpu_to_hw_sg(sg_temp);
}
return 0;
}
/* Handle mbufs which are not segmented (non SG) */
static inline void
tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf,
struct dpaa_bp_info *bp_info,
struct qm_fd *fd_arr)
{
struct rte_mbuf *mi = NULL;
if (RTE_MBUF_DIRECT(mbuf)) {
if (rte_mbuf_refcnt_read(mbuf) > 1) {
/* In case of direct mbuf and mbuf being cloned,
* BMAN should _not_ release buffer.
*/
DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
/* Buffer should be releasd by EAL */
rte_mbuf_refcnt_update(mbuf, -1);
} else {
/* In case of direct mbuf and no cloning, mbuf can be
* released by BMAN.
*/
DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
}
} else {
/* This is data-containing core mbuf: 'mi' */
mi = rte_mbuf_from_indirect(mbuf);
if (rte_mbuf_refcnt_read(mi) > 1) {
/* In case of indirect mbuf, and mbuf being cloned,
* BMAN should _not_ release it and let EAL release
* it through pktmbuf_free below.
*/
DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
} else {
/* In case of indirect mbuf, and no cloning, core mbuf
* should be released by BMAN.
* Increate refcnt of core mbuf so that when
* pktmbuf_free is called and mbuf is released, EAL
* doesn't try to release core mbuf which would have
* been released by BMAN.
*/
rte_mbuf_refcnt_update(mi, 1);
DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
}
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))) {
DPAA_DP_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, mbuf->buf_addr);
}
}
}
/* Handle all mbufs on dpaa BMAN managed pool */
static inline uint16_t
tx_on_dpaa_pool(struct rte_mbuf *mbuf,
struct dpaa_bp_info *bp_info,
struct qm_fd *fd_arr)
{
DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
if (mbuf->nb_segs == 1) {
/* Case for non-segmented buffers */
tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
} else if (mbuf->nb_segs > 1 &&
mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
return 1;
}
} else {
DPAA_PMD_DEBUG("Number of Segments not supported");
return 1;
}
return 0;
}
/* Handle all mbufs on an external pool (non-dpaa) */
static inline uint16_t
tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
struct qm_fd *fd_arr)
{
struct dpaa_if *dpaa_intf = txq->dpaa_intf;
struct rte_mbuf *dmable_mbuf;
DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
"Allocating an offloaded buffer");
dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
if (!dmable_mbuf) {
DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
return 1;
}
DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, dpaa_intf->bp_info->bpid);
return 0;
}
uint16_t
dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
{
struct rte_mbuf *mbuf, *mi = NULL;
struct rte_mempool *mp;
struct dpaa_bp_info *bp_info;
struct qm_fd fd_arr[MAX_TX_RING_SLOTS];
uint32_t frames_to_send, loop, i = 0;
uint16_t state;
int ret;
ret = rte_dpaa_portal_init((void *)0);
if (ret) {
DPAA_PMD_ERR("Failure in affining portal");
return 0;
}
DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
while (nb_bufs) {
frames_to_send = (nb_bufs >> 3) ? MAX_TX_RING_SLOTS : nb_bufs;
for (loop = 0; loop < frames_to_send; loop++, i++) {
mbuf = bufs[i];
if (RTE_MBUF_DIRECT(mbuf)) {
mp = mbuf->pool;
} else {
mi = rte_mbuf_from_indirect(mbuf);
mp = mi->pool;
}
bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
state = tx_on_dpaa_pool(mbuf, bp_info,
&fd_arr[loop]);
if (unlikely(state)) {
/* Set frames_to_send & nb_bufs so
* that packets are transmitted till
* previous frame.
*/
frames_to_send = loop;
nb_bufs = loop;
goto send_pkts;
}
} else {
state = tx_on_external_pool(q, mbuf,
&fd_arr[loop]);
if (unlikely(state)) {
/* Set frames_to_send & nb_bufs so
* that packets are transmitted till
* previous frame.
*/
frames_to_send = loop;
nb_bufs = loop;
goto send_pkts;
}
}
}
send_pkts:
loop = 0;
while (loop < frames_to_send) {
loop += qman_enqueue_multi(q, &fd_arr[loop],
frames_to_send - loop);
}
nb_bufs -= frames_to_send;
}
DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", i, q);
return i;
}
uint16_t dpaa_eth_tx_drop_all(void *q __rte_unused,
struct rte_mbuf **bufs __rte_unused,
uint16_t nb_bufs __rte_unused)
{
DPAA_DP_LOG(DEBUG, "Drop all packets");
/* Drop all incoming packets. No need to free packets here
* because the rte_eth f/w frees up the packets through tx_buffer
* callback in case this functions returns count less than nb_bufs
*/
return 0;
}
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