4 * Copyright 2012-2017 6WIND S.A.
5 * Copyright 2012-2017 Mellanox.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of 6WIND S.A. nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 * - RSS hash key and options cannot be modified.
37 * - Hardware counters aren't implemented.
51 #include <arpa/inet.h>
54 #include <sys/ioctl.h>
55 #include <sys/socket.h>
56 #include <netinet/in.h>
57 #include <linux/ethtool.h>
58 #include <linux/sockios.h>
61 #include <rte_ether.h>
62 #include <rte_ethdev.h>
63 #include <rte_ethdev_pci.h>
66 #include <rte_errno.h>
67 #include <rte_mempool.h>
68 #include <rte_prefetch.h>
69 #include <rte_malloc.h>
70 #include <rte_spinlock.h>
71 #include <rte_atomic.h>
72 #include <rte_version.h>
74 #include <rte_alarm.h>
75 #include <rte_memory.h>
77 #include <rte_kvargs.h>
79 /* Generated configuration header. */
80 #include "mlx4_autoconf.h"
84 #include "mlx4_flow.h"
86 /* Convenience macros for accessing mbuf fields. */
87 #define NEXT(m) ((m)->next)
88 #define DATA_LEN(m) ((m)->data_len)
89 #define PKT_LEN(m) ((m)->pkt_len)
90 #define DATA_OFF(m) ((m)->data_off)
91 #define SET_DATA_OFF(m, o) ((m)->data_off = (o))
92 #define NB_SEGS(m) ((m)->nb_segs)
93 #define PORT(m) ((m)->port)
95 /* Work Request ID data type (64 bit). */
104 #define WR_ID(o) (((wr_id_t *)&(o))->data)
106 /* Transpose flags. Useful to convert IBV to DPDK flags. */
107 #define TRANSPOSE(val, from, to) \
108 (((from) >= (to)) ? \
109 (((val) & (from)) / ((from) / (to))) : \
110 (((val) & (from)) * ((to) / (from))))
112 /* Local storage for secondary process data. */
113 struct mlx4_secondary_data
{
114 struct rte_eth_dev_data data
; /* Local device data. */
115 struct priv
*primary_priv
; /* Private structure from primary. */
116 struct rte_eth_dev_data
*shared_dev_data
; /* Shared device data. */
117 rte_spinlock_t lock
; /* Port configuration lock. */
118 } mlx4_secondary_data
[RTE_MAX_ETHPORTS
];
121 uint8_t active_ports
;
124 /* Available parameters list. */
125 const char *pmd_mlx4_init_params
[] = {
131 * Check if running as a secondary process.
134 * Nonzero if running as a secondary process.
137 mlx4_is_secondary(void)
139 return rte_eal_process_type() != RTE_PROC_PRIMARY
;
143 * Return private structure associated with an Ethernet device.
146 * Pointer to Ethernet device structure.
149 * Pointer to private structure.
152 mlx4_get_priv(struct rte_eth_dev
*dev
)
154 struct mlx4_secondary_data
*sd
;
156 if (!mlx4_is_secondary())
157 return dev
->data
->dev_private
;
158 sd
= &mlx4_secondary_data
[dev
->data
->port_id
];
159 return sd
->data
.dev_private
;
163 * Lock private structure to protect it from concurrent access in the
167 * Pointer to private structure.
169 void priv_lock(struct priv
*priv
)
171 rte_spinlock_lock(&priv
->lock
);
175 * Unlock private structure.
178 * Pointer to private structure.
180 void priv_unlock(struct priv
*priv
)
182 rte_spinlock_unlock(&priv
->lock
);
185 /* Allocate a buffer on the stack and fill it with a printf format string. */
186 #define MKSTR(name, ...) \
187 char name[snprintf(NULL, 0, __VA_ARGS__) + 1]; \
189 snprintf(name, sizeof(name), __VA_ARGS__)
192 * Get interface name from private structure.
195 * Pointer to private structure.
197 * Interface name output buffer.
200 * 0 on success, -1 on failure and errno is set.
203 priv_get_ifname(const struct priv
*priv
, char (*ifname
)[IF_NAMESIZE
])
207 unsigned int dev_type
= 0;
208 unsigned int dev_port_prev
= ~0u;
209 char match
[IF_NAMESIZE
] = "";
212 MKSTR(path
, "%s/device/net", priv
->ctx
->device
->ibdev_path
);
218 while ((dent
= readdir(dir
)) != NULL
) {
219 char *name
= dent
->d_name
;
221 unsigned int dev_port
;
224 if ((name
[0] == '.') &&
225 ((name
[1] == '\0') ||
226 ((name
[1] == '.') && (name
[2] == '\0'))))
229 MKSTR(path
, "%s/device/net/%s/%s",
230 priv
->ctx
->device
->ibdev_path
, name
,
231 (dev_type
? "dev_id" : "dev_port"));
233 file
= fopen(path
, "rb");
238 * Switch to dev_id when dev_port does not exist as
239 * is the case with Linux kernel versions < 3.15.
250 r
= fscanf(file
, (dev_type
? "%x" : "%u"), &dev_port
);
255 * Switch to dev_id when dev_port returns the same value for
256 * all ports. May happen when using a MOFED release older than
257 * 3.0 with a Linux kernel >= 3.15.
259 if (dev_port
== dev_port_prev
)
261 dev_port_prev
= dev_port
;
262 if (dev_port
== (priv
->port
- 1u))
263 snprintf(match
, sizeof(match
), "%s", name
);
266 if (match
[0] == '\0')
268 strncpy(*ifname
, match
, sizeof(*ifname
));
273 * Read from sysfs entry.
276 * Pointer to private structure.
278 * Entry name relative to sysfs path.
280 * Data output buffer.
285 * 0 on success, -1 on failure and errno is set.
288 priv_sysfs_read(const struct priv
*priv
, const char *entry
,
289 char *buf
, size_t size
)
291 char ifname
[IF_NAMESIZE
];
296 if (priv_get_ifname(priv
, &ifname
))
299 MKSTR(path
, "%s/device/net/%s/%s", priv
->ctx
->device
->ibdev_path
,
302 file
= fopen(path
, "rb");
305 ret
= fread(buf
, 1, size
, file
);
307 if (((size_t)ret
< size
) && (ferror(file
)))
317 * Write to sysfs entry.
320 * Pointer to private structure.
322 * Entry name relative to sysfs path.
329 * 0 on success, -1 on failure and errno is set.
332 priv_sysfs_write(const struct priv
*priv
, const char *entry
,
333 char *buf
, size_t size
)
335 char ifname
[IF_NAMESIZE
];
340 if (priv_get_ifname(priv
, &ifname
))
343 MKSTR(path
, "%s/device/net/%s/%s", priv
->ctx
->device
->ibdev_path
,
346 file
= fopen(path
, "wb");
349 ret
= fwrite(buf
, 1, size
, file
);
351 if (((size_t)ret
< size
) || (ferror(file
)))
361 * Get unsigned long sysfs property.
364 * Pointer to private structure.
366 * Entry name relative to sysfs path.
368 * Value output buffer.
371 * 0 on success, -1 on failure and errno is set.
374 priv_get_sysfs_ulong(struct priv
*priv
, const char *name
, unsigned long *value
)
377 unsigned long value_ret
;
380 ret
= priv_sysfs_read(priv
, name
, value_str
, (sizeof(value_str
) - 1));
382 DEBUG("cannot read %s value from sysfs: %s",
383 name
, strerror(errno
));
386 value_str
[ret
] = '\0';
388 value_ret
= strtoul(value_str
, NULL
, 0);
390 DEBUG("invalid %s value `%s': %s", name
, value_str
,
399 * Set unsigned long sysfs property.
402 * Pointer to private structure.
404 * Entry name relative to sysfs path.
409 * 0 on success, -1 on failure and errno is set.
412 priv_set_sysfs_ulong(struct priv
*priv
, const char *name
, unsigned long value
)
415 MKSTR(value_str
, "%lu", value
);
417 ret
= priv_sysfs_write(priv
, name
, value_str
, (sizeof(value_str
) - 1));
419 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
420 name
, value_str
, value
, strerror(errno
));
427 * Perform ifreq ioctl() on associated Ethernet device.
430 * Pointer to private structure.
432 * Request number to pass to ioctl().
434 * Interface request structure output buffer.
437 * 0 on success, -1 on failure and errno is set.
440 priv_ifreq(const struct priv
*priv
, int req
, struct ifreq
*ifr
)
442 int sock
= socket(PF_INET
, SOCK_DGRAM
, IPPROTO_IP
);
447 if (priv_get_ifname(priv
, &ifr
->ifr_name
) == 0)
448 ret
= ioctl(sock
, req
, ifr
);
457 * Pointer to private structure.
459 * MTU value output buffer.
462 * 0 on success, -1 on failure and errno is set.
465 priv_get_mtu(struct priv
*priv
, uint16_t *mtu
)
467 unsigned long ulong_mtu
;
469 if (priv_get_sysfs_ulong(priv
, "mtu", &ulong_mtu
) == -1)
479 * Pointer to private structure.
484 * 0 on success, -1 on failure and errno is set.
487 priv_set_mtu(struct priv
*priv
, uint16_t mtu
)
491 if (priv_set_sysfs_ulong(priv
, "mtu", mtu
) ||
492 priv_get_mtu(priv
, &new_mtu
))
504 * Pointer to private structure.
506 * Bitmask for flags that must remain untouched.
508 * Bitmask for flags to modify.
511 * 0 on success, -1 on failure and errno is set.
514 priv_set_flags(struct priv
*priv
, unsigned int keep
, unsigned int flags
)
518 if (priv_get_sysfs_ulong(priv
, "flags", &tmp
) == -1)
521 tmp
|= (flags
& (~keep
));
522 return priv_set_sysfs_ulong(priv
, "flags", tmp
);
525 /* Device configuration. */
528 txq_setup(struct rte_eth_dev
*dev
, struct txq
*txq
, uint16_t desc
,
529 unsigned int socket
, const struct rte_eth_txconf
*conf
);
532 txq_cleanup(struct txq
*txq
);
535 rxq_setup(struct rte_eth_dev
*dev
, struct rxq
*rxq
, uint16_t desc
,
536 unsigned int socket
, int inactive
, const struct rte_eth_rxconf
*conf
,
537 struct rte_mempool
*mp
);
540 rxq_cleanup(struct rxq
*rxq
);
543 * Ethernet device configuration.
545 * Prepare the driver for a given number of TX and RX queues.
546 * Allocate parent RSS queue when several RX queues are requested.
549 * Pointer to Ethernet device structure.
552 * 0 on success, errno value on failure.
555 dev_configure(struct rte_eth_dev
*dev
)
557 struct priv
*priv
= dev
->data
->dev_private
;
558 unsigned int rxqs_n
= dev
->data
->nb_rx_queues
;
559 unsigned int txqs_n
= dev
->data
->nb_tx_queues
;
563 priv
->rxqs
= (void *)dev
->data
->rx_queues
;
564 priv
->txqs
= (void *)dev
->data
->tx_queues
;
565 if (txqs_n
!= priv
->txqs_n
) {
566 INFO("%p: TX queues number update: %u -> %u",
567 (void *)dev
, priv
->txqs_n
, txqs_n
);
568 priv
->txqs_n
= txqs_n
;
570 if (rxqs_n
== priv
->rxqs_n
)
572 if (!rte_is_power_of_2(rxqs_n
)) {
575 n_active
= rte_align32pow2(rxqs_n
+ 1) >> 1;
576 WARN("%p: number of RX queues must be a power"
577 " of 2: %u queues among %u will be active",
578 (void *)dev
, n_active
, rxqs_n
);
581 INFO("%p: RX queues number update: %u -> %u",
582 (void *)dev
, priv
->rxqs_n
, rxqs_n
);
583 /* If RSS is enabled, disable it first. */
587 /* Only if there are no remaining child RX queues. */
588 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
589 if ((*priv
->rxqs
)[i
] != NULL
)
591 rxq_cleanup(&priv
->rxq_parent
);
596 /* Nothing else to do. */
597 priv
->rxqs_n
= rxqs_n
;
600 /* Allocate a new RSS parent queue if supported by hardware. */
602 ERROR("%p: only a single RX queue can be configured when"
603 " hardware doesn't support RSS",
607 /* Fail if hardware doesn't support that many RSS queues. */
608 if (rxqs_n
>= priv
->max_rss_tbl_sz
) {
609 ERROR("%p: only %u RX queues can be configured for RSS",
610 (void *)dev
, priv
->max_rss_tbl_sz
);
615 priv
->rxqs_n
= rxqs_n
;
616 ret
= rxq_setup(dev
, &priv
->rxq_parent
, 0, 0, 0, NULL
, NULL
);
619 /* Failure, rollback. */
627 * DPDK callback for Ethernet device configuration.
630 * Pointer to Ethernet device structure.
633 * 0 on success, negative errno value on failure.
636 mlx4_dev_configure(struct rte_eth_dev
*dev
)
638 struct priv
*priv
= dev
->data
->dev_private
;
641 if (mlx4_is_secondary())
642 return -E_RTE_SECONDARY
;
644 ret
= dev_configure(dev
);
650 static uint16_t mlx4_tx_burst(void *, struct rte_mbuf
**, uint16_t);
651 static uint16_t removed_rx_burst(void *, struct rte_mbuf
**, uint16_t);
654 * Configure secondary process queues from a private data pointer (primary
655 * or secondary) and update burst callbacks. Can take place only once.
657 * All queues must have been previously created by the primary process to
658 * avoid undefined behavior.
661 * Private data pointer from either primary or secondary process.
664 * Private data pointer from secondary process, NULL in case of error.
667 mlx4_secondary_data_setup(struct priv
*priv
)
669 unsigned int port_id
= 0;
670 struct mlx4_secondary_data
*sd
;
673 unsigned int nb_tx_queues
;
674 unsigned int nb_rx_queues
;
677 /* priv must be valid at this point. */
678 assert(priv
!= NULL
);
679 /* priv->dev must also be valid but may point to local memory from
680 * another process, possibly with the same address and must not
681 * be dereferenced yet. */
682 assert(priv
->dev
!= NULL
);
683 /* Determine port ID by finding out where priv comes from. */
685 sd
= &mlx4_secondary_data
[port_id
];
686 rte_spinlock_lock(&sd
->lock
);
687 /* Primary process? */
688 if (sd
->primary_priv
== priv
)
690 /* Secondary process? */
691 if (sd
->data
.dev_private
== priv
)
693 rte_spinlock_unlock(&sd
->lock
);
694 if (++port_id
== RTE_DIM(mlx4_secondary_data
))
697 /* Switch to secondary private structure. If private data has already
698 * been updated by another thread, there is nothing else to do. */
699 priv
= sd
->data
.dev_private
;
700 if (priv
->dev
->data
== &sd
->data
)
702 /* Sanity checks. Secondary private structure is supposed to point
703 * to local eth_dev, itself still pointing to the shared device data
704 * structure allocated by the primary process. */
705 assert(sd
->shared_dev_data
!= &sd
->data
);
706 assert(sd
->data
.nb_tx_queues
== 0);
707 assert(sd
->data
.tx_queues
== NULL
);
708 assert(sd
->data
.nb_rx_queues
== 0);
709 assert(sd
->data
.rx_queues
== NULL
);
710 assert(priv
!= sd
->primary_priv
);
711 assert(priv
->dev
->data
== sd
->shared_dev_data
);
712 assert(priv
->txqs_n
== 0);
713 assert(priv
->txqs
== NULL
);
714 assert(priv
->rxqs_n
== 0);
715 assert(priv
->rxqs
== NULL
);
716 nb_tx_queues
= sd
->shared_dev_data
->nb_tx_queues
;
717 nb_rx_queues
= sd
->shared_dev_data
->nb_rx_queues
;
718 /* Allocate local storage for queues. */
719 tx_queues
= rte_zmalloc("secondary ethdev->tx_queues",
720 sizeof(sd
->data
.tx_queues
[0]) * nb_tx_queues
,
721 RTE_CACHE_LINE_SIZE
);
722 rx_queues
= rte_zmalloc("secondary ethdev->rx_queues",
723 sizeof(sd
->data
.rx_queues
[0]) * nb_rx_queues
,
724 RTE_CACHE_LINE_SIZE
);
725 if (tx_queues
== NULL
|| rx_queues
== NULL
)
727 /* Lock to prevent control operations during setup. */
730 for (i
= 0; i
!= nb_tx_queues
; ++i
) {
731 struct txq
*primary_txq
= (*sd
->primary_priv
->txqs
)[i
];
734 if (primary_txq
== NULL
)
736 txq
= rte_calloc_socket("TXQ", 1, sizeof(*txq
), 0,
737 primary_txq
->socket
);
739 if (txq_setup(priv
->dev
,
741 primary_txq
->elts_n
* MLX4_PMD_SGE_WR_N
,
744 txq
->stats
.idx
= primary_txq
->stats
.idx
;
751 txq
= tx_queues
[--i
];
758 for (i
= 0; i
!= nb_rx_queues
; ++i
) {
759 struct rxq
*primary_rxq
= (*sd
->primary_priv
->rxqs
)[i
];
761 if (primary_rxq
== NULL
)
763 /* Not supported yet. */
766 /* Update everything. */
767 priv
->txqs
= (void *)tx_queues
;
768 priv
->txqs_n
= nb_tx_queues
;
769 priv
->rxqs
= (void *)rx_queues
;
770 priv
->rxqs_n
= nb_rx_queues
;
771 sd
->data
.rx_queues
= rx_queues
;
772 sd
->data
.tx_queues
= tx_queues
;
773 sd
->data
.nb_rx_queues
= nb_rx_queues
;
774 sd
->data
.nb_tx_queues
= nb_tx_queues
;
775 sd
->data
.dev_link
= sd
->shared_dev_data
->dev_link
;
776 sd
->data
.mtu
= sd
->shared_dev_data
->mtu
;
777 memcpy(sd
->data
.rx_queue_state
, sd
->shared_dev_data
->rx_queue_state
,
778 sizeof(sd
->data
.rx_queue_state
));
779 memcpy(sd
->data
.tx_queue_state
, sd
->shared_dev_data
->tx_queue_state
,
780 sizeof(sd
->data
.tx_queue_state
));
781 sd
->data
.dev_flags
= sd
->shared_dev_data
->dev_flags
;
782 /* Use local data from now on. */
784 priv
->dev
->data
= &sd
->data
;
786 priv
->dev
->tx_pkt_burst
= mlx4_tx_burst
;
787 priv
->dev
->rx_pkt_burst
= removed_rx_burst
;
790 /* More sanity checks. */
791 assert(priv
->dev
->tx_pkt_burst
== mlx4_tx_burst
);
792 assert(priv
->dev
->rx_pkt_burst
== removed_rx_burst
);
793 assert(priv
->dev
->data
== &sd
->data
);
794 rte_spinlock_unlock(&sd
->lock
);
800 rte_spinlock_unlock(&sd
->lock
);
804 /* TX queues handling. */
807 * Allocate TX queue elements.
810 * Pointer to TX queue structure.
812 * Number of elements to allocate.
815 * 0 on success, errno value on failure.
818 txq_alloc_elts(struct txq
*txq
, unsigned int elts_n
)
821 struct txq_elt (*elts
)[elts_n
] =
822 rte_calloc_socket("TXQ", 1, sizeof(*elts
), 0, txq
->socket
);
823 linear_t (*elts_linear
)[elts_n
] =
824 rte_calloc_socket("TXQ", 1, sizeof(*elts_linear
), 0,
826 struct ibv_mr
*mr_linear
= NULL
;
829 if ((elts
== NULL
) || (elts_linear
== NULL
)) {
830 ERROR("%p: can't allocate packets array", (void *)txq
);
835 ibv_reg_mr(txq
->priv
->pd
, elts_linear
, sizeof(*elts_linear
),
836 IBV_ACCESS_LOCAL_WRITE
);
837 if (mr_linear
== NULL
) {
838 ERROR("%p: unable to configure MR, ibv_reg_mr() failed",
843 for (i
= 0; (i
!= elts_n
); ++i
) {
844 struct txq_elt
*elt
= &(*elts
)[i
];
848 DEBUG("%p: allocated and configured %u WRs", (void *)txq
, elts_n
);
849 txq
->elts_n
= elts_n
;
854 /* Request send completion every MLX4_PMD_TX_PER_COMP_REQ packets or
855 * at least 4 times per ring. */
856 txq
->elts_comp_cd_init
=
857 ((MLX4_PMD_TX_PER_COMP_REQ
< (elts_n
/ 4)) ?
858 MLX4_PMD_TX_PER_COMP_REQ
: (elts_n
/ 4));
859 txq
->elts_comp_cd
= txq
->elts_comp_cd_init
;
860 txq
->elts_linear
= elts_linear
;
861 txq
->mr_linear
= mr_linear
;
865 if (mr_linear
!= NULL
)
866 claim_zero(ibv_dereg_mr(mr_linear
));
868 rte_free(elts_linear
);
871 DEBUG("%p: failed, freed everything", (void *)txq
);
877 * Free TX queue elements.
880 * Pointer to TX queue structure.
883 txq_free_elts(struct txq
*txq
)
885 unsigned int elts_n
= txq
->elts_n
;
886 unsigned int elts_head
= txq
->elts_head
;
887 unsigned int elts_tail
= txq
->elts_tail
;
888 struct txq_elt (*elts
)[elts_n
] = txq
->elts
;
889 linear_t (*elts_linear
)[elts_n
] = txq
->elts_linear
;
890 struct ibv_mr
*mr_linear
= txq
->mr_linear
;
892 DEBUG("%p: freeing WRs", (void *)txq
);
897 txq
->elts_comp_cd
= 0;
898 txq
->elts_comp_cd_init
= 0;
900 txq
->elts_linear
= NULL
;
901 txq
->mr_linear
= NULL
;
902 if (mr_linear
!= NULL
)
903 claim_zero(ibv_dereg_mr(mr_linear
));
905 rte_free(elts_linear
);
908 while (elts_tail
!= elts_head
) {
909 struct txq_elt
*elt
= &(*elts
)[elts_tail
];
911 assert(elt
->buf
!= NULL
);
912 rte_pktmbuf_free(elt
->buf
);
915 memset(elt
, 0x77, sizeof(*elt
));
917 if (++elts_tail
== elts_n
)
925 * Clean up a TX queue.
927 * Destroy objects, free allocated memory and reset the structure for reuse.
930 * Pointer to TX queue structure.
933 txq_cleanup(struct txq
*txq
)
935 struct ibv_exp_release_intf_params params
;
938 DEBUG("cleaning up %p", (void *)txq
);
940 if (txq
->if_qp
!= NULL
) {
941 assert(txq
->priv
!= NULL
);
942 assert(txq
->priv
->ctx
!= NULL
);
943 assert(txq
->qp
!= NULL
);
944 params
= (struct ibv_exp_release_intf_params
){
947 claim_zero(ibv_exp_release_intf(txq
->priv
->ctx
,
951 if (txq
->if_cq
!= NULL
) {
952 assert(txq
->priv
!= NULL
);
953 assert(txq
->priv
->ctx
!= NULL
);
954 assert(txq
->cq
!= NULL
);
955 params
= (struct ibv_exp_release_intf_params
){
958 claim_zero(ibv_exp_release_intf(txq
->priv
->ctx
,
963 claim_zero(ibv_destroy_qp(txq
->qp
));
965 claim_zero(ibv_destroy_cq(txq
->cq
));
966 if (txq
->rd
!= NULL
) {
967 struct ibv_exp_destroy_res_domain_attr attr
= {
971 assert(txq
->priv
!= NULL
);
972 assert(txq
->priv
->ctx
!= NULL
);
973 claim_zero(ibv_exp_destroy_res_domain(txq
->priv
->ctx
,
977 for (i
= 0; (i
!= elemof(txq
->mp2mr
)); ++i
) {
978 if (txq
->mp2mr
[i
].mp
== NULL
)
980 assert(txq
->mp2mr
[i
].mr
!= NULL
);
981 claim_zero(ibv_dereg_mr(txq
->mp2mr
[i
].mr
));
983 memset(txq
, 0, sizeof(*txq
));
987 * Manage TX completions.
989 * When sending a burst, mlx4_tx_burst() posts several WRs.
990 * To improve performance, a completion event is only required once every
991 * MLX4_PMD_TX_PER_COMP_REQ sends. Doing so discards completion information
992 * for other WRs, but this information would not be used anyway.
995 * Pointer to TX queue structure.
998 * 0 on success, -1 on failure.
1001 txq_complete(struct txq
*txq
)
1003 unsigned int elts_comp
= txq
->elts_comp
;
1004 unsigned int elts_tail
= txq
->elts_tail
;
1005 const unsigned int elts_n
= txq
->elts_n
;
1008 if (unlikely(elts_comp
== 0))
1011 DEBUG("%p: processing %u work requests completions",
1012 (void *)txq
, elts_comp
);
1014 wcs_n
= txq
->if_cq
->poll_cnt(txq
->cq
, elts_comp
);
1015 if (unlikely(wcs_n
== 0))
1017 if (unlikely(wcs_n
< 0)) {
1018 DEBUG("%p: ibv_poll_cq() failed (wcs_n=%d)",
1019 (void *)txq
, wcs_n
);
1023 assert(elts_comp
<= txq
->elts_comp
);
1025 * Assume WC status is successful as nothing can be done about it
1028 elts_tail
+= wcs_n
* txq
->elts_comp_cd_init
;
1029 if (elts_tail
>= elts_n
)
1030 elts_tail
-= elts_n
;
1031 txq
->elts_tail
= elts_tail
;
1032 txq
->elts_comp
= elts_comp
;
1036 struct mlx4_check_mempool_data
{
1042 /* Called by mlx4_check_mempool() when iterating the memory chunks. */
1043 static void mlx4_check_mempool_cb(struct rte_mempool
*mp
,
1044 void *opaque
, struct rte_mempool_memhdr
*memhdr
,
1047 struct mlx4_check_mempool_data
*data
= opaque
;
1052 /* It already failed, skip the next chunks. */
1055 /* It is the first chunk. */
1056 if (data
->start
== NULL
&& data
->end
== NULL
) {
1057 data
->start
= memhdr
->addr
;
1058 data
->end
= data
->start
+ memhdr
->len
;
1061 if (data
->end
== memhdr
->addr
) {
1062 data
->end
+= memhdr
->len
;
1065 if (data
->start
== (char *)memhdr
->addr
+ memhdr
->len
) {
1066 data
->start
-= memhdr
->len
;
1069 /* Error, mempool is not virtually contigous. */
1074 * Check if a mempool can be used: it must be virtually contiguous.
1077 * Pointer to memory pool.
1079 * Pointer to the start address of the mempool virtual memory area
1081 * Pointer to the end address of the mempool virtual memory area
1084 * 0 on success (mempool is virtually contiguous), -1 on error.
1086 static int mlx4_check_mempool(struct rte_mempool
*mp
, uintptr_t *start
,
1089 struct mlx4_check_mempool_data data
;
1091 memset(&data
, 0, sizeof(data
));
1092 rte_mempool_mem_iter(mp
, mlx4_check_mempool_cb
, &data
);
1093 *start
= (uintptr_t)data
.start
;
1094 *end
= (uintptr_t)data
.end
;
1099 /* For best performance, this function should not be inlined. */
1100 static struct ibv_mr
*mlx4_mp2mr(struct ibv_pd
*, struct rte_mempool
*)
1101 __attribute__((noinline
));
1104 * Register mempool as a memory region.
1107 * Pointer to protection domain.
1109 * Pointer to memory pool.
1112 * Memory region pointer, NULL in case of error.
1114 static struct ibv_mr
*
1115 mlx4_mp2mr(struct ibv_pd
*pd
, struct rte_mempool
*mp
)
1117 const struct rte_memseg
*ms
= rte_eal_get_physmem_layout();
1122 if (mlx4_check_mempool(mp
, &start
, &end
) != 0) {
1123 ERROR("mempool %p: not virtually contiguous",
1128 DEBUG("mempool %p area start=%p end=%p size=%zu",
1129 (void *)mp
, (void *)start
, (void *)end
,
1130 (size_t)(end
- start
));
1131 /* Round start and end to page boundary if found in memory segments. */
1132 for (i
= 0; (i
< RTE_MAX_MEMSEG
) && (ms
[i
].addr
!= NULL
); ++i
) {
1133 uintptr_t addr
= (uintptr_t)ms
[i
].addr
;
1134 size_t len
= ms
[i
].len
;
1135 unsigned int align
= ms
[i
].hugepage_sz
;
1137 if ((start
> addr
) && (start
< addr
+ len
))
1138 start
= RTE_ALIGN_FLOOR(start
, align
);
1139 if ((end
> addr
) && (end
< addr
+ len
))
1140 end
= RTE_ALIGN_CEIL(end
, align
);
1142 DEBUG("mempool %p using start=%p end=%p size=%zu for MR",
1143 (void *)mp
, (void *)start
, (void *)end
,
1144 (size_t)(end
- start
));
1145 return ibv_reg_mr(pd
,
1148 IBV_ACCESS_LOCAL_WRITE
);
1152 * Get Memory Pool (MP) from mbuf. If mbuf is indirect, the pool from which
1153 * the cloned mbuf is allocated is returned instead.
1159 * Memory pool where data is located for given mbuf.
1161 static struct rte_mempool
*
1162 txq_mb2mp(struct rte_mbuf
*buf
)
1164 if (unlikely(RTE_MBUF_INDIRECT(buf
)))
1165 return rte_mbuf_from_indirect(buf
)->pool
;
1170 * Get Memory Region (MR) <-> Memory Pool (MP) association from txq->mp2mr[].
1171 * Add MP to txq->mp2mr[] if it's not registered yet. If mp2mr[] is full,
1172 * remove an entry first.
1175 * Pointer to TX queue structure.
1177 * Memory Pool for which a Memory Region lkey must be returned.
1180 * mr->lkey on success, (uint32_t)-1 on failure.
1183 txq_mp2mr(struct txq
*txq
, struct rte_mempool
*mp
)
1188 for (i
= 0; (i
!= elemof(txq
->mp2mr
)); ++i
) {
1189 if (unlikely(txq
->mp2mr
[i
].mp
== NULL
)) {
1190 /* Unknown MP, add a new MR for it. */
1193 if (txq
->mp2mr
[i
].mp
== mp
) {
1194 assert(txq
->mp2mr
[i
].lkey
!= (uint32_t)-1);
1195 assert(txq
->mp2mr
[i
].mr
->lkey
== txq
->mp2mr
[i
].lkey
);
1196 return txq
->mp2mr
[i
].lkey
;
1199 /* Add a new entry, register MR first. */
1200 DEBUG("%p: discovered new memory pool \"%s\" (%p)",
1201 (void *)txq
, mp
->name
, (void *)mp
);
1202 mr
= mlx4_mp2mr(txq
->priv
->pd
, mp
);
1203 if (unlikely(mr
== NULL
)) {
1204 DEBUG("%p: unable to configure MR, ibv_reg_mr() failed.",
1206 return (uint32_t)-1;
1208 if (unlikely(i
== elemof(txq
->mp2mr
))) {
1209 /* Table is full, remove oldest entry. */
1210 DEBUG("%p: MR <-> MP table full, dropping oldest entry.",
1213 claim_zero(ibv_dereg_mr(txq
->mp2mr
[0].mr
));
1214 memmove(&txq
->mp2mr
[0], &txq
->mp2mr
[1],
1215 (sizeof(txq
->mp2mr
) - sizeof(txq
->mp2mr
[0])));
1217 /* Store the new entry. */
1218 txq
->mp2mr
[i
].mp
= mp
;
1219 txq
->mp2mr
[i
].mr
= mr
;
1220 txq
->mp2mr
[i
].lkey
= mr
->lkey
;
1221 DEBUG("%p: new MR lkey for MP \"%s\" (%p): 0x%08" PRIu32
,
1222 (void *)txq
, mp
->name
, (void *)mp
, txq
->mp2mr
[i
].lkey
);
1223 return txq
->mp2mr
[i
].lkey
;
1226 struct txq_mp2mr_mbuf_check_data
{
1231 * Callback function for rte_mempool_obj_iter() to check whether a given
1232 * mempool object looks like a mbuf.
1235 * The mempool pointer
1237 * Context data (struct txq_mp2mr_mbuf_check_data). Contains the
1242 * Object index, unused.
1245 txq_mp2mr_mbuf_check(struct rte_mempool
*mp
, void *arg
, void *obj
,
1246 uint32_t index __rte_unused
)
1248 struct txq_mp2mr_mbuf_check_data
*data
= arg
;
1249 struct rte_mbuf
*buf
= obj
;
1251 /* Check whether mbuf structure fits element size and whether mempool
1252 * pointer is valid. */
1253 if (sizeof(*buf
) > mp
->elt_size
|| buf
->pool
!= mp
)
1258 * Iterator function for rte_mempool_walk() to register existing mempools and
1259 * fill the MP to MR cache of a TX queue.
1262 * Memory Pool to register.
1264 * Pointer to TX queue structure.
1267 txq_mp2mr_iter(struct rte_mempool
*mp
, void *arg
)
1269 struct txq
*txq
= arg
;
1270 struct txq_mp2mr_mbuf_check_data data
= {
1274 /* Register mempool only if the first element looks like a mbuf. */
1275 if (rte_mempool_obj_iter(mp
, txq_mp2mr_mbuf_check
, &data
) == 0 ||
1281 #if MLX4_PMD_SGE_WR_N > 1
1284 * Copy scattered mbuf contents to a single linear buffer.
1286 * @param[out] linear
1287 * Linear output buffer.
1289 * Scattered input buffer.
1292 * Number of bytes copied to the output buffer or 0 if not large enough.
1295 linearize_mbuf(linear_t
*linear
, struct rte_mbuf
*buf
)
1297 unsigned int size
= 0;
1298 unsigned int offset
;
1301 unsigned int len
= DATA_LEN(buf
);
1305 if (unlikely(size
> sizeof(*linear
)))
1307 memcpy(&(*linear
)[offset
],
1308 rte_pktmbuf_mtod(buf
, uint8_t *),
1311 } while (buf
!= NULL
);
1316 * Handle scattered buffers for mlx4_tx_burst().
1319 * TX queue structure.
1321 * Number of segments in buf.
1323 * TX queue element to fill.
1325 * Buffer to process.
1327 * Index of the linear buffer to use if necessary (normally txq->elts_head).
1329 * Array filled with SGEs on success.
1332 * A structure containing the processed packet size in bytes and the
1333 * number of SGEs. Both fields are set to (unsigned int)-1 in case of
1336 static struct tx_burst_sg_ret
{
1337 unsigned int length
;
1340 tx_burst_sg(struct txq
*txq
, unsigned int segs
, struct txq_elt
*elt
,
1341 struct rte_mbuf
*buf
, unsigned int elts_head
,
1342 struct ibv_sge (*sges
)[MLX4_PMD_SGE_WR_N
])
1344 unsigned int sent_size
= 0;
1348 /* When there are too many segments, extra segments are
1349 * linearized in the last SGE. */
1350 if (unlikely(segs
> elemof(*sges
))) {
1351 segs
= (elemof(*sges
) - 1);
1354 /* Update element. */
1356 /* Register segments as SGEs. */
1357 for (j
= 0; (j
!= segs
); ++j
) {
1358 struct ibv_sge
*sge
= &(*sges
)[j
];
1361 /* Retrieve Memory Region key for this memory pool. */
1362 lkey
= txq_mp2mr(txq
, txq_mb2mp(buf
));
1363 if (unlikely(lkey
== (uint32_t)-1)) {
1364 /* MR does not exist. */
1365 DEBUG("%p: unable to get MP <-> MR association",
1367 /* Clean up TX element. */
1372 sge
->addr
= rte_pktmbuf_mtod(buf
, uintptr_t);
1374 rte_prefetch0((volatile void *)
1375 (uintptr_t)sge
->addr
);
1376 sge
->length
= DATA_LEN(buf
);
1378 sent_size
+= sge
->length
;
1381 /* If buf is not NULL here and is not going to be linearized,
1382 * nb_segs is not valid. */
1384 assert((buf
== NULL
) || (linearize
));
1385 /* Linearize extra segments. */
1387 struct ibv_sge
*sge
= &(*sges
)[segs
];
1388 linear_t
*linear
= &(*txq
->elts_linear
)[elts_head
];
1389 unsigned int size
= linearize_mbuf(linear
, buf
);
1391 assert(segs
== (elemof(*sges
) - 1));
1393 /* Invalid packet. */
1394 DEBUG("%p: packet too large to be linearized.",
1396 /* Clean up TX element. */
1400 /* If MLX4_PMD_SGE_WR_N is 1, free mbuf immediately. */
1401 if (elemof(*sges
) == 1) {
1403 struct rte_mbuf
*next
= NEXT(buf
);
1405 rte_pktmbuf_free_seg(buf
);
1407 } while (buf
!= NULL
);
1411 sge
->addr
= (uintptr_t)&(*linear
)[0];
1413 sge
->lkey
= txq
->mr_linear
->lkey
;
1415 /* Include last segment. */
1418 return (struct tx_burst_sg_ret
){
1419 .length
= sent_size
,
1423 return (struct tx_burst_sg_ret
){
1429 #endif /* MLX4_PMD_SGE_WR_N > 1 */
1432 * DPDK callback for TX.
1435 * Generic pointer to TX queue structure.
1437 * Packets to transmit.
1439 * Number of packets in array.
1442 * Number of packets successfully transmitted (<= pkts_n).
1445 mlx4_tx_burst(void *dpdk_txq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
1447 struct txq
*txq
= (struct txq
*)dpdk_txq
;
1448 unsigned int elts_head
= txq
->elts_head
;
1449 const unsigned int elts_n
= txq
->elts_n
;
1450 unsigned int elts_comp_cd
= txq
->elts_comp_cd
;
1451 unsigned int elts_comp
= 0;
1456 assert(elts_comp_cd
!= 0);
1458 max
= (elts_n
- (elts_head
- txq
->elts_tail
));
1462 assert(max
<= elts_n
);
1463 /* Always leave one free entry in the ring. */
1469 for (i
= 0; (i
!= max
); ++i
) {
1470 struct rte_mbuf
*buf
= pkts
[i
];
1471 unsigned int elts_head_next
=
1472 (((elts_head
+ 1) == elts_n
) ? 0 : elts_head
+ 1);
1473 struct txq_elt
*elt_next
= &(*txq
->elts
)[elts_head_next
];
1474 struct txq_elt
*elt
= &(*txq
->elts
)[elts_head
];
1475 unsigned int segs
= NB_SEGS(buf
);
1476 #ifdef MLX4_PMD_SOFT_COUNTERS
1477 unsigned int sent_size
= 0;
1479 uint32_t send_flags
= 0;
1481 /* Clean up old buffer. */
1482 if (likely(elt
->buf
!= NULL
)) {
1483 struct rte_mbuf
*tmp
= elt
->buf
;
1487 memset(elt
, 0x66, sizeof(*elt
));
1489 /* Faster than rte_pktmbuf_free(). */
1491 struct rte_mbuf
*next
= NEXT(tmp
);
1493 rte_pktmbuf_free_seg(tmp
);
1495 } while (tmp
!= NULL
);
1497 /* Request TX completion. */
1498 if (unlikely(--elts_comp_cd
== 0)) {
1499 elts_comp_cd
= txq
->elts_comp_cd_init
;
1501 send_flags
|= IBV_EXP_QP_BURST_SIGNALED
;
1503 /* Should we enable HW CKSUM offload */
1505 (PKT_TX_IP_CKSUM
| PKT_TX_TCP_CKSUM
| PKT_TX_UDP_CKSUM
)) {
1506 send_flags
|= IBV_EXP_QP_BURST_IP_CSUM
;
1507 /* HW does not support checksum offloads at arbitrary
1508 * offsets but automatically recognizes the packet
1509 * type. For inner L3/L4 checksums, only VXLAN (UDP)
1510 * tunnels are currently supported. */
1511 if (RTE_ETH_IS_TUNNEL_PKT(buf
->packet_type
))
1512 send_flags
|= IBV_EXP_QP_BURST_TUNNEL
;
1514 if (likely(segs
== 1)) {
1519 /* Retrieve buffer information. */
1520 addr
= rte_pktmbuf_mtod(buf
, uintptr_t);
1521 length
= DATA_LEN(buf
);
1522 /* Retrieve Memory Region key for this memory pool. */
1523 lkey
= txq_mp2mr(txq
, txq_mb2mp(buf
));
1524 if (unlikely(lkey
== (uint32_t)-1)) {
1525 /* MR does not exist. */
1526 DEBUG("%p: unable to get MP <-> MR"
1527 " association", (void *)txq
);
1528 /* Clean up TX element. */
1532 /* Update element. */
1535 rte_prefetch0((volatile void *)
1537 RTE_MBUF_PREFETCH_TO_FREE(elt_next
->buf
);
1538 /* Put packet into send queue. */
1539 #if MLX4_PMD_MAX_INLINE > 0
1540 if (length
<= txq
->max_inline
)
1541 err
= txq
->if_qp
->send_pending_inline
1548 err
= txq
->if_qp
->send_pending
1556 #ifdef MLX4_PMD_SOFT_COUNTERS
1557 sent_size
+= length
;
1560 #if MLX4_PMD_SGE_WR_N > 1
1561 struct ibv_sge sges
[MLX4_PMD_SGE_WR_N
];
1562 struct tx_burst_sg_ret ret
;
1564 ret
= tx_burst_sg(txq
, segs
, elt
, buf
, elts_head
,
1566 if (ret
.length
== (unsigned int)-1)
1568 RTE_MBUF_PREFETCH_TO_FREE(elt_next
->buf
);
1569 /* Put SG list into send queue. */
1570 err
= txq
->if_qp
->send_pending_sg_list
1577 #ifdef MLX4_PMD_SOFT_COUNTERS
1578 sent_size
+= ret
.length
;
1580 #else /* MLX4_PMD_SGE_WR_N > 1 */
1581 DEBUG("%p: TX scattered buffers support not"
1582 " compiled in", (void *)txq
);
1584 #endif /* MLX4_PMD_SGE_WR_N > 1 */
1586 elts_head
= elts_head_next
;
1587 #ifdef MLX4_PMD_SOFT_COUNTERS
1588 /* Increment sent bytes counter. */
1589 txq
->stats
.obytes
+= sent_size
;
1593 /* Take a shortcut if nothing must be sent. */
1594 if (unlikely(i
== 0))
1596 #ifdef MLX4_PMD_SOFT_COUNTERS
1597 /* Increment sent packets counter. */
1598 txq
->stats
.opackets
+= i
;
1600 /* Ring QP doorbell. */
1601 err
= txq
->if_qp
->send_flush(txq
->qp
);
1602 if (unlikely(err
)) {
1603 /* A nonzero value is not supposed to be returned.
1604 * Nothing can be done about it. */
1605 DEBUG("%p: send_flush() failed with error %d",
1608 txq
->elts_head
= elts_head
;
1609 txq
->elts_comp
+= elts_comp
;
1610 txq
->elts_comp_cd
= elts_comp_cd
;
1615 * DPDK callback for TX in secondary processes.
1617 * This function configures all queues from primary process information
1618 * if necessary before reverting to the normal TX burst callback.
1621 * Generic pointer to TX queue structure.
1623 * Packets to transmit.
1625 * Number of packets in array.
1628 * Number of packets successfully transmitted (<= pkts_n).
1631 mlx4_tx_burst_secondary_setup(void *dpdk_txq
, struct rte_mbuf
**pkts
,
1634 struct txq
*txq
= dpdk_txq
;
1635 struct priv
*priv
= mlx4_secondary_data_setup(txq
->priv
);
1636 struct priv
*primary_priv
;
1642 mlx4_secondary_data
[priv
->dev
->data
->port_id
].primary_priv
;
1643 /* Look for queue index in both private structures. */
1644 for (index
= 0; index
!= priv
->txqs_n
; ++index
)
1645 if (((*primary_priv
->txqs
)[index
] == txq
) ||
1646 ((*priv
->txqs
)[index
] == txq
))
1648 if (index
== priv
->txqs_n
)
1650 txq
= (*priv
->txqs
)[index
];
1651 return priv
->dev
->tx_pkt_burst(txq
, pkts
, pkts_n
);
1655 * Configure a TX queue.
1658 * Pointer to Ethernet device structure.
1660 * Pointer to TX queue structure.
1662 * Number of descriptors to configure in queue.
1664 * NUMA socket on which memory must be allocated.
1666 * Thresholds parameters.
1669 * 0 on success, errno value on failure.
1672 txq_setup(struct rte_eth_dev
*dev
, struct txq
*txq
, uint16_t desc
,
1673 unsigned int socket
, const struct rte_eth_txconf
*conf
)
1675 struct priv
*priv
= mlx4_get_priv(dev
);
1681 struct ibv_exp_query_intf_params params
;
1682 struct ibv_exp_qp_init_attr init
;
1683 struct ibv_exp_res_domain_init_attr rd
;
1684 struct ibv_exp_cq_init_attr cq
;
1685 struct ibv_exp_qp_attr mod
;
1687 enum ibv_exp_query_intf_status status
;
1690 (void)conf
; /* Thresholds configuration (ignored). */
1693 if ((desc
== 0) || (desc
% MLX4_PMD_SGE_WR_N
)) {
1694 ERROR("%p: invalid number of TX descriptors (must be a"
1695 " multiple of %d)", (void *)dev
, MLX4_PMD_SGE_WR_N
);
1698 desc
/= MLX4_PMD_SGE_WR_N
;
1699 /* MRs will be registered in mp2mr[] later. */
1700 attr
.rd
= (struct ibv_exp_res_domain_init_attr
){
1701 .comp_mask
= (IBV_EXP_RES_DOMAIN_THREAD_MODEL
|
1702 IBV_EXP_RES_DOMAIN_MSG_MODEL
),
1703 .thread_model
= IBV_EXP_THREAD_SINGLE
,
1704 .msg_model
= IBV_EXP_MSG_HIGH_BW
,
1706 tmpl
.rd
= ibv_exp_create_res_domain(priv
->ctx
, &attr
.rd
);
1707 if (tmpl
.rd
== NULL
) {
1709 ERROR("%p: RD creation failure: %s",
1710 (void *)dev
, strerror(ret
));
1713 attr
.cq
= (struct ibv_exp_cq_init_attr
){
1714 .comp_mask
= IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN
,
1715 .res_domain
= tmpl
.rd
,
1717 tmpl
.cq
= ibv_exp_create_cq(priv
->ctx
, desc
, NULL
, NULL
, 0, &attr
.cq
);
1718 if (tmpl
.cq
== NULL
) {
1720 ERROR("%p: CQ creation failure: %s",
1721 (void *)dev
, strerror(ret
));
1724 DEBUG("priv->device_attr.max_qp_wr is %d",
1725 priv
->device_attr
.max_qp_wr
);
1726 DEBUG("priv->device_attr.max_sge is %d",
1727 priv
->device_attr
.max_sge
);
1728 attr
.init
= (struct ibv_exp_qp_init_attr
){
1729 /* CQ to be associated with the send queue. */
1731 /* CQ to be associated with the receive queue. */
1734 /* Max number of outstanding WRs. */
1735 .max_send_wr
= ((priv
->device_attr
.max_qp_wr
< desc
) ?
1736 priv
->device_attr
.max_qp_wr
:
1738 /* Max number of scatter/gather elements in a WR. */
1739 .max_send_sge
= ((priv
->device_attr
.max_sge
<
1740 MLX4_PMD_SGE_WR_N
) ?
1741 priv
->device_attr
.max_sge
:
1743 #if MLX4_PMD_MAX_INLINE > 0
1744 .max_inline_data
= MLX4_PMD_MAX_INLINE
,
1747 .qp_type
= IBV_QPT_RAW_PACKET
,
1748 /* Do *NOT* enable this, completions events are managed per
1752 .res_domain
= tmpl
.rd
,
1753 .comp_mask
= (IBV_EXP_QP_INIT_ATTR_PD
|
1754 IBV_EXP_QP_INIT_ATTR_RES_DOMAIN
),
1756 tmpl
.qp
= ibv_exp_create_qp(priv
->ctx
, &attr
.init
);
1757 if (tmpl
.qp
== NULL
) {
1758 ret
= (errno
? errno
: EINVAL
);
1759 ERROR("%p: QP creation failure: %s",
1760 (void *)dev
, strerror(ret
));
1763 #if MLX4_PMD_MAX_INLINE > 0
1764 /* ibv_create_qp() updates this value. */
1765 tmpl
.max_inline
= attr
.init
.cap
.max_inline_data
;
1767 attr
.mod
= (struct ibv_exp_qp_attr
){
1768 /* Move the QP to this state. */
1769 .qp_state
= IBV_QPS_INIT
,
1770 /* Primary port number. */
1771 .port_num
= priv
->port
1773 ret
= ibv_exp_modify_qp(tmpl
.qp
, &attr
.mod
,
1774 (IBV_EXP_QP_STATE
| IBV_EXP_QP_PORT
));
1776 ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
1777 (void *)dev
, strerror(ret
));
1780 ret
= txq_alloc_elts(&tmpl
, desc
);
1782 ERROR("%p: TXQ allocation failed: %s",
1783 (void *)dev
, strerror(ret
));
1786 attr
.mod
= (struct ibv_exp_qp_attr
){
1787 .qp_state
= IBV_QPS_RTR
1789 ret
= ibv_exp_modify_qp(tmpl
.qp
, &attr
.mod
, IBV_EXP_QP_STATE
);
1791 ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
1792 (void *)dev
, strerror(ret
));
1795 attr
.mod
.qp_state
= IBV_QPS_RTS
;
1796 ret
= ibv_exp_modify_qp(tmpl
.qp
, &attr
.mod
, IBV_EXP_QP_STATE
);
1798 ERROR("%p: QP state to IBV_QPS_RTS failed: %s",
1799 (void *)dev
, strerror(ret
));
1802 attr
.params
= (struct ibv_exp_query_intf_params
){
1803 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
1804 .intf
= IBV_EXP_INTF_CQ
,
1807 tmpl
.if_cq
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
1808 if (tmpl
.if_cq
== NULL
) {
1809 ERROR("%p: CQ interface family query failed with status %d",
1810 (void *)dev
, status
);
1813 attr
.params
= (struct ibv_exp_query_intf_params
){
1814 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
1815 .intf
= IBV_EXP_INTF_QP_BURST
,
1817 #ifdef HAVE_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK
1818 /* MC loopback must be disabled when not using a VF. */
1821 IBV_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK
:
1825 tmpl
.if_qp
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
1826 if (tmpl
.if_qp
== NULL
) {
1827 ERROR("%p: QP interface family query failed with status %d",
1828 (void *)dev
, status
);
1831 /* Clean up txq in case we're reinitializing it. */
1832 DEBUG("%p: cleaning-up old txq just in case", (void *)txq
);
1835 DEBUG("%p: txq updated with %p", (void *)txq
, (void *)&tmpl
);
1836 /* Pre-register known mempools. */
1837 rte_mempool_walk(txq_mp2mr_iter
, txq
);
1847 * DPDK callback to configure a TX queue.
1850 * Pointer to Ethernet device structure.
1854 * Number of descriptors to configure in queue.
1856 * NUMA socket on which memory must be allocated.
1858 * Thresholds parameters.
1861 * 0 on success, negative errno value on failure.
1864 mlx4_tx_queue_setup(struct rte_eth_dev
*dev
, uint16_t idx
, uint16_t desc
,
1865 unsigned int socket
, const struct rte_eth_txconf
*conf
)
1867 struct priv
*priv
= dev
->data
->dev_private
;
1868 struct txq
*txq
= (*priv
->txqs
)[idx
];
1871 if (mlx4_is_secondary())
1872 return -E_RTE_SECONDARY
;
1874 DEBUG("%p: configuring queue %u for %u descriptors",
1875 (void *)dev
, idx
, desc
);
1876 if (idx
>= priv
->txqs_n
) {
1877 ERROR("%p: queue index out of range (%u >= %u)",
1878 (void *)dev
, idx
, priv
->txqs_n
);
1883 DEBUG("%p: reusing already allocated queue index %u (%p)",
1884 (void *)dev
, idx
, (void *)txq
);
1885 if (priv
->started
) {
1889 (*priv
->txqs
)[idx
] = NULL
;
1892 txq
= rte_calloc_socket("TXQ", 1, sizeof(*txq
), 0, socket
);
1894 ERROR("%p: unable to allocate queue index %u",
1900 ret
= txq_setup(dev
, txq
, desc
, socket
, conf
);
1904 txq
->stats
.idx
= idx
;
1905 DEBUG("%p: adding TX queue %p to list",
1906 (void *)dev
, (void *)txq
);
1907 (*priv
->txqs
)[idx
] = txq
;
1908 /* Update send callback. */
1909 dev
->tx_pkt_burst
= mlx4_tx_burst
;
1916 * DPDK callback to release a TX queue.
1919 * Generic TX queue pointer.
1922 mlx4_tx_queue_release(void *dpdk_txq
)
1924 struct txq
*txq
= (struct txq
*)dpdk_txq
;
1928 if (mlx4_is_secondary())
1934 for (i
= 0; (i
!= priv
->txqs_n
); ++i
)
1935 if ((*priv
->txqs
)[i
] == txq
) {
1936 DEBUG("%p: removing TX queue %p from list",
1937 (void *)priv
->dev
, (void *)txq
);
1938 (*priv
->txqs
)[i
] = NULL
;
1946 /* RX queues handling. */
1949 * Allocate RX queue elements with scattered packets support.
1952 * Pointer to RX queue structure.
1954 * Number of elements to allocate.
1956 * If not NULL, fetch buffers from this array instead of allocating them
1957 * with rte_pktmbuf_alloc().
1960 * 0 on success, errno value on failure.
1963 rxq_alloc_elts_sp(struct rxq
*rxq
, unsigned int elts_n
,
1964 struct rte_mbuf
**pool
)
1967 struct rxq_elt_sp (*elts
)[elts_n
] =
1968 rte_calloc_socket("RXQ elements", 1, sizeof(*elts
), 0,
1973 ERROR("%p: can't allocate packets array", (void *)rxq
);
1977 /* For each WR (packet). */
1978 for (i
= 0; (i
!= elts_n
); ++i
) {
1980 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
1981 struct ibv_recv_wr
*wr
= &elt
->wr
;
1982 struct ibv_sge (*sges
)[(elemof(elt
->sges
))] = &elt
->sges
;
1984 /* These two arrays must have the same size. */
1985 assert(elemof(elt
->sges
) == elemof(elt
->bufs
));
1988 wr
->next
= &(*elts
)[(i
+ 1)].wr
;
1989 wr
->sg_list
= &(*sges
)[0];
1990 wr
->num_sge
= elemof(*sges
);
1991 /* For each SGE (segment). */
1992 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
1993 struct ibv_sge
*sge
= &(*sges
)[j
];
1994 struct rte_mbuf
*buf
;
1998 assert(buf
!= NULL
);
1999 rte_pktmbuf_reset(buf
);
2001 buf
= rte_pktmbuf_alloc(rxq
->mp
);
2003 assert(pool
== NULL
);
2004 ERROR("%p: empty mbuf pool", (void *)rxq
);
2009 /* Headroom is reserved by rte_pktmbuf_alloc(). */
2010 assert(DATA_OFF(buf
) == RTE_PKTMBUF_HEADROOM
);
2011 /* Buffer is supposed to be empty. */
2012 assert(rte_pktmbuf_data_len(buf
) == 0);
2013 assert(rte_pktmbuf_pkt_len(buf
) == 0);
2014 /* sge->addr must be able to store a pointer. */
2015 assert(sizeof(sge
->addr
) >= sizeof(uintptr_t));
2017 /* The first SGE keeps its headroom. */
2018 sge
->addr
= rte_pktmbuf_mtod(buf
, uintptr_t);
2019 sge
->length
= (buf
->buf_len
-
2020 RTE_PKTMBUF_HEADROOM
);
2022 /* Subsequent SGEs lose theirs. */
2023 assert(DATA_OFF(buf
) == RTE_PKTMBUF_HEADROOM
);
2024 SET_DATA_OFF(buf
, 0);
2025 sge
->addr
= (uintptr_t)buf
->buf_addr
;
2026 sge
->length
= buf
->buf_len
;
2028 sge
->lkey
= rxq
->mr
->lkey
;
2029 /* Redundant check for tailroom. */
2030 assert(sge
->length
== rte_pktmbuf_tailroom(buf
));
2033 /* The last WR pointer must be NULL. */
2034 (*elts
)[(i
- 1)].wr
.next
= NULL
;
2035 DEBUG("%p: allocated and configured %u WRs (%zu segments)",
2036 (void *)rxq
, elts_n
, (elts_n
* elemof((*elts
)[0].sges
)));
2037 rxq
->elts_n
= elts_n
;
2039 rxq
->elts
.sp
= elts
;
2044 assert(pool
== NULL
);
2045 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2047 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
2049 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
2050 struct rte_mbuf
*buf
= elt
->bufs
[j
];
2053 rte_pktmbuf_free_seg(buf
);
2058 DEBUG("%p: failed, freed everything", (void *)rxq
);
2064 * Free RX queue elements with scattered packets support.
2067 * Pointer to RX queue structure.
2070 rxq_free_elts_sp(struct rxq
*rxq
)
2073 unsigned int elts_n
= rxq
->elts_n
;
2074 struct rxq_elt_sp (*elts
)[elts_n
] = rxq
->elts
.sp
;
2076 DEBUG("%p: freeing WRs", (void *)rxq
);
2078 rxq
->elts
.sp
= NULL
;
2081 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2083 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
2085 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
2086 struct rte_mbuf
*buf
= elt
->bufs
[j
];
2089 rte_pktmbuf_free_seg(buf
);
2096 * Allocate RX queue elements.
2099 * Pointer to RX queue structure.
2101 * Number of elements to allocate.
2103 * If not NULL, fetch buffers from this array instead of allocating them
2104 * with rte_pktmbuf_alloc().
2107 * 0 on success, errno value on failure.
2110 rxq_alloc_elts(struct rxq
*rxq
, unsigned int elts_n
, struct rte_mbuf
**pool
)
2113 struct rxq_elt (*elts
)[elts_n
] =
2114 rte_calloc_socket("RXQ elements", 1, sizeof(*elts
), 0,
2119 ERROR("%p: can't allocate packets array", (void *)rxq
);
2123 /* For each WR (packet). */
2124 for (i
= 0; (i
!= elts_n
); ++i
) {
2125 struct rxq_elt
*elt
= &(*elts
)[i
];
2126 struct ibv_recv_wr
*wr
= &elt
->wr
;
2127 struct ibv_sge
*sge
= &(*elts
)[i
].sge
;
2128 struct rte_mbuf
*buf
;
2132 assert(buf
!= NULL
);
2133 rte_pktmbuf_reset(buf
);
2135 buf
= rte_pktmbuf_alloc(rxq
->mp
);
2137 assert(pool
== NULL
);
2138 ERROR("%p: empty mbuf pool", (void *)rxq
);
2142 /* Configure WR. Work request ID contains its own index in
2143 * the elts array and the offset between SGE buffer header and
2145 WR_ID(wr
->wr_id
).id
= i
;
2146 WR_ID(wr
->wr_id
).offset
=
2147 (((uintptr_t)buf
->buf_addr
+ RTE_PKTMBUF_HEADROOM
) -
2149 wr
->next
= &(*elts
)[(i
+ 1)].wr
;
2152 /* Headroom is reserved by rte_pktmbuf_alloc(). */
2153 assert(DATA_OFF(buf
) == RTE_PKTMBUF_HEADROOM
);
2154 /* Buffer is supposed to be empty. */
2155 assert(rte_pktmbuf_data_len(buf
) == 0);
2156 assert(rte_pktmbuf_pkt_len(buf
) == 0);
2157 /* sge->addr must be able to store a pointer. */
2158 assert(sizeof(sge
->addr
) >= sizeof(uintptr_t));
2159 /* SGE keeps its headroom. */
2160 sge
->addr
= (uintptr_t)
2161 ((uint8_t *)buf
->buf_addr
+ RTE_PKTMBUF_HEADROOM
);
2162 sge
->length
= (buf
->buf_len
- RTE_PKTMBUF_HEADROOM
);
2163 sge
->lkey
= rxq
->mr
->lkey
;
2164 /* Redundant check for tailroom. */
2165 assert(sge
->length
== rte_pktmbuf_tailroom(buf
));
2166 /* Make sure elts index and SGE mbuf pointer can be deduced
2168 if ((WR_ID(wr
->wr_id
).id
!= i
) ||
2169 ((void *)((uintptr_t)sge
->addr
-
2170 WR_ID(wr
->wr_id
).offset
) != buf
)) {
2171 ERROR("%p: cannot store index and offset in WR ID",
2174 rte_pktmbuf_free(buf
);
2179 /* The last WR pointer must be NULL. */
2180 (*elts
)[(i
- 1)].wr
.next
= NULL
;
2181 DEBUG("%p: allocated and configured %u single-segment WRs",
2182 (void *)rxq
, elts_n
);
2183 rxq
->elts_n
= elts_n
;
2185 rxq
->elts
.no_sp
= elts
;
2190 assert(pool
== NULL
);
2191 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2192 struct rxq_elt
*elt
= &(*elts
)[i
];
2193 struct rte_mbuf
*buf
;
2195 if (elt
->sge
.addr
== 0)
2197 assert(WR_ID(elt
->wr
.wr_id
).id
== i
);
2198 buf
= (void *)((uintptr_t)elt
->sge
.addr
-
2199 WR_ID(elt
->wr
.wr_id
).offset
);
2200 rte_pktmbuf_free_seg(buf
);
2204 DEBUG("%p: failed, freed everything", (void *)rxq
);
2210 * Free RX queue elements.
2213 * Pointer to RX queue structure.
2216 rxq_free_elts(struct rxq
*rxq
)
2219 unsigned int elts_n
= rxq
->elts_n
;
2220 struct rxq_elt (*elts
)[elts_n
] = rxq
->elts
.no_sp
;
2222 DEBUG("%p: freeing WRs", (void *)rxq
);
2224 rxq
->elts
.no_sp
= NULL
;
2227 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2228 struct rxq_elt
*elt
= &(*elts
)[i
];
2229 struct rte_mbuf
*buf
;
2231 if (elt
->sge
.addr
== 0)
2233 assert(WR_ID(elt
->wr
.wr_id
).id
== i
);
2234 buf
= (void *)((uintptr_t)elt
->sge
.addr
-
2235 WR_ID(elt
->wr
.wr_id
).offset
);
2236 rte_pktmbuf_free_seg(buf
);
2242 * Delete flow steering rule.
2245 * Pointer to RX queue structure.
2247 * MAC address index.
2252 rxq_del_flow(struct rxq
*rxq
, unsigned int mac_index
, unsigned int vlan_index
)
2255 struct priv
*priv
= rxq
->priv
;
2256 const uint8_t (*mac
)[ETHER_ADDR_LEN
] =
2257 (const uint8_t (*)[ETHER_ADDR_LEN
])
2258 priv
->mac
[mac_index
].addr_bytes
;
2260 assert(rxq
->mac_flow
[mac_index
][vlan_index
] != NULL
);
2261 DEBUG("%p: removing MAC address %02x:%02x:%02x:%02x:%02x:%02x index %u"
2262 " (VLAN ID %" PRIu16
")",
2264 (*mac
)[0], (*mac
)[1], (*mac
)[2], (*mac
)[3], (*mac
)[4], (*mac
)[5],
2265 mac_index
, priv
->vlan_filter
[vlan_index
].id
);
2266 claim_zero(ibv_destroy_flow(rxq
->mac_flow
[mac_index
][vlan_index
]));
2267 rxq
->mac_flow
[mac_index
][vlan_index
] = NULL
;
2271 * Unregister a MAC address from a RX queue.
2274 * Pointer to RX queue structure.
2276 * MAC address index.
2279 rxq_mac_addr_del(struct rxq
*rxq
, unsigned int mac_index
)
2281 struct priv
*priv
= rxq
->priv
;
2283 unsigned int vlans
= 0;
2285 assert(mac_index
< elemof(priv
->mac
));
2286 if (!BITFIELD_ISSET(rxq
->mac_configured
, mac_index
))
2288 for (i
= 0; (i
!= elemof(priv
->vlan_filter
)); ++i
) {
2289 if (!priv
->vlan_filter
[i
].enabled
)
2291 rxq_del_flow(rxq
, mac_index
, i
);
2295 rxq_del_flow(rxq
, mac_index
, 0);
2297 BITFIELD_RESET(rxq
->mac_configured
, mac_index
);
2301 * Unregister all MAC addresses from a RX queue.
2304 * Pointer to RX queue structure.
2307 rxq_mac_addrs_del(struct rxq
*rxq
)
2309 struct priv
*priv
= rxq
->priv
;
2312 for (i
= 0; (i
!= elemof(priv
->mac
)); ++i
)
2313 rxq_mac_addr_del(rxq
, i
);
2316 static int rxq_promiscuous_enable(struct rxq
*);
2317 static void rxq_promiscuous_disable(struct rxq
*);
2320 * Add single flow steering rule.
2323 * Pointer to RX queue structure.
2325 * MAC address index to register.
2327 * VLAN index. Use -1 for a flow without VLAN.
2330 * 0 on success, errno value on failure.
2333 rxq_add_flow(struct rxq
*rxq
, unsigned int mac_index
, unsigned int vlan_index
)
2335 struct ibv_flow
*flow
;
2336 struct priv
*priv
= rxq
->priv
;
2337 const uint8_t (*mac
)[ETHER_ADDR_LEN
] =
2338 (const uint8_t (*)[ETHER_ADDR_LEN
])
2339 priv
->mac
[mac_index
].addr_bytes
;
2341 /* Allocate flow specification on the stack. */
2342 struct __attribute__((packed
)) {
2343 struct ibv_flow_attr attr
;
2344 struct ibv_flow_spec_eth spec
;
2346 struct ibv_flow_attr
*attr
= &data
.attr
;
2347 struct ibv_flow_spec_eth
*spec
= &data
.spec
;
2349 assert(mac_index
< elemof(priv
->mac
));
2350 assert((vlan_index
< elemof(priv
->vlan_filter
)) || (vlan_index
== -1u));
2352 * No padding must be inserted by the compiler between attr and spec.
2353 * This layout is expected by libibverbs.
2355 assert(((uint8_t *)attr
+ sizeof(*attr
)) == (uint8_t *)spec
);
2356 *attr
= (struct ibv_flow_attr
){
2357 .type
= IBV_FLOW_ATTR_NORMAL
,
2363 *spec
= (struct ibv_flow_spec_eth
){
2364 .type
= IBV_FLOW_SPEC_ETH
,
2365 .size
= sizeof(*spec
),
2368 (*mac
)[0], (*mac
)[1], (*mac
)[2],
2369 (*mac
)[3], (*mac
)[4], (*mac
)[5]
2371 .vlan_tag
= ((vlan_index
!= -1u) ?
2372 htons(priv
->vlan_filter
[vlan_index
].id
) :
2376 .dst_mac
= "\xff\xff\xff\xff\xff\xff",
2377 .vlan_tag
= ((vlan_index
!= -1u) ? htons(0xfff) : 0),
2380 DEBUG("%p: adding MAC address %02x:%02x:%02x:%02x:%02x:%02x index %u"
2381 " (VLAN %s %" PRIu16
")",
2383 (*mac
)[0], (*mac
)[1], (*mac
)[2], (*mac
)[3], (*mac
)[4], (*mac
)[5],
2385 ((vlan_index
!= -1u) ? "ID" : "index"),
2386 ((vlan_index
!= -1u) ? priv
->vlan_filter
[vlan_index
].id
: -1u));
2387 /* Create related flow. */
2389 flow
= ibv_create_flow(rxq
->qp
, attr
);
2391 /* It's not clear whether errno is always set in this case. */
2392 ERROR("%p: flow configuration failed, errno=%d: %s",
2394 (errno
? strerror(errno
) : "Unknown error"));
2399 if (vlan_index
== -1u)
2401 assert(rxq
->mac_flow
[mac_index
][vlan_index
] == NULL
);
2402 rxq
->mac_flow
[mac_index
][vlan_index
] = flow
;
2407 * Register a MAC address in a RX queue.
2410 * Pointer to RX queue structure.
2412 * MAC address index to register.
2415 * 0 on success, errno value on failure.
2418 rxq_mac_addr_add(struct rxq
*rxq
, unsigned int mac_index
)
2420 struct priv
*priv
= rxq
->priv
;
2422 unsigned int vlans
= 0;
2425 assert(mac_index
< elemof(priv
->mac
));
2426 if (BITFIELD_ISSET(rxq
->mac_configured
, mac_index
))
2427 rxq_mac_addr_del(rxq
, mac_index
);
2428 /* Fill VLAN specifications. */
2429 for (i
= 0; (i
!= elemof(priv
->vlan_filter
)); ++i
) {
2430 if (!priv
->vlan_filter
[i
].enabled
)
2432 /* Create related flow. */
2433 ret
= rxq_add_flow(rxq
, mac_index
, i
);
2438 /* Failure, rollback. */
2440 if (priv
->vlan_filter
[--i
].enabled
)
2441 rxq_del_flow(rxq
, mac_index
, i
);
2445 /* In case there is no VLAN filter. */
2447 ret
= rxq_add_flow(rxq
, mac_index
, -1);
2451 BITFIELD_SET(rxq
->mac_configured
, mac_index
);
2456 * Register all MAC addresses in a RX queue.
2459 * Pointer to RX queue structure.
2462 * 0 on success, errno value on failure.
2465 rxq_mac_addrs_add(struct rxq
*rxq
)
2467 struct priv
*priv
= rxq
->priv
;
2471 for (i
= 0; (i
!= elemof(priv
->mac
)); ++i
) {
2472 if (!BITFIELD_ISSET(priv
->mac_configured
, i
))
2474 ret
= rxq_mac_addr_add(rxq
, i
);
2477 /* Failure, rollback. */
2479 rxq_mac_addr_del(rxq
, --i
);
2487 * Unregister a MAC address.
2489 * In RSS mode, the MAC address is unregistered from the parent queue,
2490 * otherwise it is unregistered from each queue directly.
2493 * Pointer to private structure.
2495 * MAC address index.
2498 priv_mac_addr_del(struct priv
*priv
, unsigned int mac_index
)
2502 assert(mac_index
< elemof(priv
->mac
));
2503 if (!BITFIELD_ISSET(priv
->mac_configured
, mac_index
))
2506 rxq_mac_addr_del(&priv
->rxq_parent
, mac_index
);
2509 for (i
= 0; (i
!= priv
->dev
->data
->nb_rx_queues
); ++i
)
2510 rxq_mac_addr_del((*priv
->rxqs
)[i
], mac_index
);
2512 BITFIELD_RESET(priv
->mac_configured
, mac_index
);
2516 * Register a MAC address.
2518 * In RSS mode, the MAC address is registered in the parent queue,
2519 * otherwise it is registered in each queue directly.
2522 * Pointer to private structure.
2524 * MAC address index to use.
2526 * MAC address to register.
2529 * 0 on success, errno value on failure.
2532 priv_mac_addr_add(struct priv
*priv
, unsigned int mac_index
,
2533 const uint8_t (*mac
)[ETHER_ADDR_LEN
])
2538 assert(mac_index
< elemof(priv
->mac
));
2539 /* First, make sure this address isn't already configured. */
2540 for (i
= 0; (i
!= elemof(priv
->mac
)); ++i
) {
2541 /* Skip this index, it's going to be reconfigured. */
2544 if (!BITFIELD_ISSET(priv
->mac_configured
, i
))
2546 if (memcmp(priv
->mac
[i
].addr_bytes
, *mac
, sizeof(*mac
)))
2548 /* Address already configured elsewhere, return with error. */
2551 if (BITFIELD_ISSET(priv
->mac_configured
, mac_index
))
2552 priv_mac_addr_del(priv
, mac_index
);
2553 priv
->mac
[mac_index
] = (struct ether_addr
){
2555 (*mac
)[0], (*mac
)[1], (*mac
)[2],
2556 (*mac
)[3], (*mac
)[4], (*mac
)[5]
2559 /* If device isn't started, this is all we need to do. */
2560 if (!priv
->started
) {
2562 /* Verify that all queues have this index disabled. */
2563 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
2564 if ((*priv
->rxqs
)[i
] == NULL
)
2566 assert(!BITFIELD_ISSET
2567 ((*priv
->rxqs
)[i
]->mac_configured
, mac_index
));
2573 ret
= rxq_mac_addr_add(&priv
->rxq_parent
, mac_index
);
2578 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
2579 if ((*priv
->rxqs
)[i
] == NULL
)
2581 ret
= rxq_mac_addr_add((*priv
->rxqs
)[i
], mac_index
);
2584 /* Failure, rollback. */
2586 if ((*priv
->rxqs
)[(--i
)] != NULL
)
2587 rxq_mac_addr_del((*priv
->rxqs
)[i
], mac_index
);
2591 BITFIELD_SET(priv
->mac_configured
, mac_index
);
2596 * Enable allmulti mode in a RX queue.
2599 * Pointer to RX queue structure.
2602 * 0 on success, errno value on failure.
2605 rxq_allmulticast_enable(struct rxq
*rxq
)
2607 struct ibv_flow
*flow
;
2608 struct ibv_flow_attr attr
= {
2609 .type
= IBV_FLOW_ATTR_MC_DEFAULT
,
2611 .port
= rxq
->priv
->port
,
2615 DEBUG("%p: enabling allmulticast mode", (void *)rxq
);
2616 if (rxq
->allmulti_flow
!= NULL
)
2619 flow
= ibv_create_flow(rxq
->qp
, &attr
);
2621 /* It's not clear whether errno is always set in this case. */
2622 ERROR("%p: flow configuration failed, errno=%d: %s",
2624 (errno
? strerror(errno
) : "Unknown error"));
2629 rxq
->allmulti_flow
= flow
;
2630 DEBUG("%p: allmulticast mode enabled", (void *)rxq
);
2635 * Disable allmulti mode in a RX queue.
2638 * Pointer to RX queue structure.
2641 rxq_allmulticast_disable(struct rxq
*rxq
)
2643 DEBUG("%p: disabling allmulticast mode", (void *)rxq
);
2644 if (rxq
->allmulti_flow
== NULL
)
2646 claim_zero(ibv_destroy_flow(rxq
->allmulti_flow
));
2647 rxq
->allmulti_flow
= NULL
;
2648 DEBUG("%p: allmulticast mode disabled", (void *)rxq
);
2652 * Enable promiscuous mode in a RX queue.
2655 * Pointer to RX queue structure.
2658 * 0 on success, errno value on failure.
2661 rxq_promiscuous_enable(struct rxq
*rxq
)
2663 struct ibv_flow
*flow
;
2664 struct ibv_flow_attr attr
= {
2665 .type
= IBV_FLOW_ATTR_ALL_DEFAULT
,
2667 .port
= rxq
->priv
->port
,
2673 DEBUG("%p: enabling promiscuous mode", (void *)rxq
);
2674 if (rxq
->promisc_flow
!= NULL
)
2677 flow
= ibv_create_flow(rxq
->qp
, &attr
);
2679 /* It's not clear whether errno is always set in this case. */
2680 ERROR("%p: flow configuration failed, errno=%d: %s",
2682 (errno
? strerror(errno
) : "Unknown error"));
2687 rxq
->promisc_flow
= flow
;
2688 DEBUG("%p: promiscuous mode enabled", (void *)rxq
);
2693 * Disable promiscuous mode in a RX queue.
2696 * Pointer to RX queue structure.
2699 rxq_promiscuous_disable(struct rxq
*rxq
)
2703 DEBUG("%p: disabling promiscuous mode", (void *)rxq
);
2704 if (rxq
->promisc_flow
== NULL
)
2706 claim_zero(ibv_destroy_flow(rxq
->promisc_flow
));
2707 rxq
->promisc_flow
= NULL
;
2708 DEBUG("%p: promiscuous mode disabled", (void *)rxq
);
2712 * Clean up a RX queue.
2714 * Destroy objects, free allocated memory and reset the structure for reuse.
2717 * Pointer to RX queue structure.
2720 rxq_cleanup(struct rxq
*rxq
)
2722 struct ibv_exp_release_intf_params params
;
2724 DEBUG("cleaning up %p", (void *)rxq
);
2726 rxq_free_elts_sp(rxq
);
2729 if (rxq
->if_qp
!= NULL
) {
2730 assert(rxq
->priv
!= NULL
);
2731 assert(rxq
->priv
->ctx
!= NULL
);
2732 assert(rxq
->qp
!= NULL
);
2733 params
= (struct ibv_exp_release_intf_params
){
2736 claim_zero(ibv_exp_release_intf(rxq
->priv
->ctx
,
2740 if (rxq
->if_cq
!= NULL
) {
2741 assert(rxq
->priv
!= NULL
);
2742 assert(rxq
->priv
->ctx
!= NULL
);
2743 assert(rxq
->cq
!= NULL
);
2744 params
= (struct ibv_exp_release_intf_params
){
2747 claim_zero(ibv_exp_release_intf(rxq
->priv
->ctx
,
2751 if (rxq
->qp
!= NULL
) {
2752 rxq_promiscuous_disable(rxq
);
2753 rxq_allmulticast_disable(rxq
);
2754 rxq_mac_addrs_del(rxq
);
2755 claim_zero(ibv_destroy_qp(rxq
->qp
));
2757 if (rxq
->cq
!= NULL
)
2758 claim_zero(ibv_destroy_cq(rxq
->cq
));
2759 if (rxq
->rd
!= NULL
) {
2760 struct ibv_exp_destroy_res_domain_attr attr
= {
2764 assert(rxq
->priv
!= NULL
);
2765 assert(rxq
->priv
->ctx
!= NULL
);
2766 claim_zero(ibv_exp_destroy_res_domain(rxq
->priv
->ctx
,
2770 if (rxq
->mr
!= NULL
)
2771 claim_zero(ibv_dereg_mr(rxq
->mr
));
2772 memset(rxq
, 0, sizeof(*rxq
));
2776 * Translate RX completion flags to packet type.
2779 * RX completion flags returned by poll_length_flags().
2781 * @note: fix mlx4_dev_supported_ptypes_get() if any change here.
2784 * Packet type for struct rte_mbuf.
2786 static inline uint32_t
2787 rxq_cq_to_pkt_type(uint32_t flags
)
2791 if (flags
& IBV_EXP_CQ_RX_TUNNEL_PACKET
)
2794 IBV_EXP_CQ_RX_OUTER_IPV4_PACKET
,
2795 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN
) |
2797 IBV_EXP_CQ_RX_OUTER_IPV6_PACKET
,
2798 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN
) |
2800 IBV_EXP_CQ_RX_IPV4_PACKET
,
2801 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN
) |
2803 IBV_EXP_CQ_RX_IPV6_PACKET
,
2804 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN
);
2808 IBV_EXP_CQ_RX_IPV4_PACKET
,
2809 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN
) |
2811 IBV_EXP_CQ_RX_IPV6_PACKET
,
2812 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN
);
2817 * Translate RX completion flags to offload flags.
2820 * Pointer to RX queue structure.
2822 * RX completion flags returned by poll_length_flags().
2825 * Offload flags (ol_flags) for struct rte_mbuf.
2827 static inline uint32_t
2828 rxq_cq_to_ol_flags(const struct rxq
*rxq
, uint32_t flags
)
2830 uint32_t ol_flags
= 0;
2835 IBV_EXP_CQ_RX_IP_CSUM_OK
,
2836 PKT_RX_IP_CKSUM_GOOD
) |
2838 IBV_EXP_CQ_RX_TCP_UDP_CSUM_OK
,
2839 PKT_RX_L4_CKSUM_GOOD
);
2840 if ((flags
& IBV_EXP_CQ_RX_TUNNEL_PACKET
) && (rxq
->csum_l2tun
))
2843 IBV_EXP_CQ_RX_OUTER_IP_CSUM_OK
,
2844 PKT_RX_IP_CKSUM_GOOD
) |
2846 IBV_EXP_CQ_RX_OUTER_TCP_UDP_CSUM_OK
,
2847 PKT_RX_L4_CKSUM_GOOD
);
2852 mlx4_rx_burst(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
);
2855 * DPDK callback for RX with scattered packets support.
2858 * Generic pointer to RX queue structure.
2860 * Array to store received packets.
2862 * Maximum number of packets in array.
2865 * Number of packets successfully received (<= pkts_n).
2868 mlx4_rx_burst_sp(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
2870 struct rxq
*rxq
= (struct rxq
*)dpdk_rxq
;
2871 struct rxq_elt_sp (*elts
)[rxq
->elts_n
] = rxq
->elts
.sp
;
2872 const unsigned int elts_n
= rxq
->elts_n
;
2873 unsigned int elts_head
= rxq
->elts_head
;
2874 struct ibv_recv_wr head
;
2875 struct ibv_recv_wr
**next
= &head
.next
;
2876 struct ibv_recv_wr
*bad_wr
;
2878 unsigned int pkts_ret
= 0;
2881 if (unlikely(!rxq
->sp
))
2882 return mlx4_rx_burst(dpdk_rxq
, pkts
, pkts_n
);
2883 if (unlikely(elts
== NULL
)) /* See RTE_DEV_CMD_SET_MTU. */
2885 for (i
= 0; (i
!= pkts_n
); ++i
) {
2886 struct rxq_elt_sp
*elt
= &(*elts
)[elts_head
];
2887 struct ibv_recv_wr
*wr
= &elt
->wr
;
2888 uint64_t wr_id
= wr
->wr_id
;
2890 unsigned int pkt_buf_len
;
2891 struct rte_mbuf
*pkt_buf
= NULL
; /* Buffer returned in pkts. */
2892 struct rte_mbuf
**pkt_buf_next
= &pkt_buf
;
2893 unsigned int seg_headroom
= RTE_PKTMBUF_HEADROOM
;
2897 /* Sanity checks. */
2901 assert(wr_id
< rxq
->elts_n
);
2902 assert(wr
->sg_list
== elt
->sges
);
2903 assert(wr
->num_sge
== elemof(elt
->sges
));
2904 assert(elts_head
< rxq
->elts_n
);
2905 assert(rxq
->elts_head
< rxq
->elts_n
);
2906 ret
= rxq
->if_cq
->poll_length_flags(rxq
->cq
, NULL
, NULL
,
2908 if (unlikely(ret
< 0)) {
2912 DEBUG("rxq=%p, poll_length() failed (ret=%d)",
2914 /* ibv_poll_cq() must be used in case of failure. */
2915 wcs_n
= ibv_poll_cq(rxq
->cq
, 1, &wc
);
2916 if (unlikely(wcs_n
== 0))
2918 if (unlikely(wcs_n
< 0)) {
2919 DEBUG("rxq=%p, ibv_poll_cq() failed (wcs_n=%d)",
2920 (void *)rxq
, wcs_n
);
2924 if (unlikely(wc
.status
!= IBV_WC_SUCCESS
)) {
2925 /* Whatever, just repost the offending WR. */
2926 DEBUG("rxq=%p, wr_id=%" PRIu64
": bad work"
2927 " completion status (%d): %s",
2928 (void *)rxq
, wc
.wr_id
, wc
.status
,
2929 ibv_wc_status_str(wc
.status
));
2930 #ifdef MLX4_PMD_SOFT_COUNTERS
2931 /* Increment dropped packets counter. */
2932 ++rxq
->stats
.idropped
;
2934 /* Link completed WRs together for repost. */
2945 /* Link completed WRs together for repost. */
2949 * Replace spent segments with new ones, concatenate and
2950 * return them as pkt_buf.
2953 struct ibv_sge
*sge
= &elt
->sges
[j
];
2954 struct rte_mbuf
*seg
= elt
->bufs
[j
];
2955 struct rte_mbuf
*rep
;
2956 unsigned int seg_tailroom
;
2959 * Fetch initial bytes of packet descriptor into a
2960 * cacheline while allocating rep.
2963 rep
= rte_mbuf_raw_alloc(rxq
->mp
);
2964 if (unlikely(rep
== NULL
)) {
2966 * Unable to allocate a replacement mbuf,
2969 DEBUG("rxq=%p, wr_id=%" PRIu64
":"
2970 " can't allocate a new mbuf",
2971 (void *)rxq
, wr_id
);
2972 if (pkt_buf
!= NULL
) {
2973 *pkt_buf_next
= NULL
;
2974 rte_pktmbuf_free(pkt_buf
);
2976 /* Increase out of memory counters. */
2977 ++rxq
->stats
.rx_nombuf
;
2978 ++rxq
->priv
->dev
->data
->rx_mbuf_alloc_failed
;
2982 /* Poison user-modifiable fields in rep. */
2983 NEXT(rep
) = (void *)((uintptr_t)-1);
2984 SET_DATA_OFF(rep
, 0xdead);
2985 DATA_LEN(rep
) = 0xd00d;
2986 PKT_LEN(rep
) = 0xdeadd00d;
2987 NB_SEGS(rep
) = 0x2a;
2991 assert(rep
->buf_len
== seg
->buf_len
);
2992 /* Reconfigure sge to use rep instead of seg. */
2993 assert(sge
->lkey
== rxq
->mr
->lkey
);
2994 sge
->addr
= ((uintptr_t)rep
->buf_addr
+ seg_headroom
);
2997 /* Update pkt_buf if it's the first segment, or link
2998 * seg to the previous one and update pkt_buf_next. */
2999 *pkt_buf_next
= seg
;
3000 pkt_buf_next
= &NEXT(seg
);
3001 /* Update seg information. */
3002 seg_tailroom
= (seg
->buf_len
- seg_headroom
);
3003 assert(sge
->length
== seg_tailroom
);
3004 SET_DATA_OFF(seg
, seg_headroom
);
3005 if (likely(len
<= seg_tailroom
)) {
3007 DATA_LEN(seg
) = len
;
3010 assert(rte_pktmbuf_headroom(seg
) ==
3012 assert(rte_pktmbuf_tailroom(seg
) ==
3013 (seg_tailroom
- len
));
3016 DATA_LEN(seg
) = seg_tailroom
;
3017 PKT_LEN(seg
) = seg_tailroom
;
3019 assert(rte_pktmbuf_headroom(seg
) == seg_headroom
);
3020 assert(rte_pktmbuf_tailroom(seg
) == 0);
3021 /* Fix len and clear headroom for next segments. */
3022 len
-= seg_tailroom
;
3025 /* Update head and tail segments. */
3026 *pkt_buf_next
= NULL
;
3027 assert(pkt_buf
!= NULL
);
3029 NB_SEGS(pkt_buf
) = j
;
3030 PORT(pkt_buf
) = rxq
->port_id
;
3031 PKT_LEN(pkt_buf
) = pkt_buf_len
;
3032 pkt_buf
->packet_type
= rxq_cq_to_pkt_type(flags
);
3033 pkt_buf
->ol_flags
= rxq_cq_to_ol_flags(rxq
, flags
);
3035 /* Return packet. */
3036 *(pkts
++) = pkt_buf
;
3038 #ifdef MLX4_PMD_SOFT_COUNTERS
3039 /* Increase bytes counter. */
3040 rxq
->stats
.ibytes
+= pkt_buf_len
;
3043 if (++elts_head
>= elts_n
)
3047 if (unlikely(i
== 0))
3052 DEBUG("%p: reposting %d WRs", (void *)rxq
, i
);
3054 ret
= ibv_post_recv(rxq
->qp
, head
.next
, &bad_wr
);
3055 if (unlikely(ret
)) {
3056 /* Inability to repost WRs is fatal. */
3057 DEBUG("%p: ibv_post_recv(): failed for WR %p: %s",
3063 rxq
->elts_head
= elts_head
;
3064 #ifdef MLX4_PMD_SOFT_COUNTERS
3065 /* Increase packets counter. */
3066 rxq
->stats
.ipackets
+= pkts_ret
;
3072 * DPDK callback for RX.
3074 * The following function is the same as mlx4_rx_burst_sp(), except it doesn't
3075 * manage scattered packets. Improves performance when MRU is lower than the
3076 * size of the first segment.
3079 * Generic pointer to RX queue structure.
3081 * Array to store received packets.
3083 * Maximum number of packets in array.
3086 * Number of packets successfully received (<= pkts_n).
3089 mlx4_rx_burst(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
3091 struct rxq
*rxq
= (struct rxq
*)dpdk_rxq
;
3092 struct rxq_elt (*elts
)[rxq
->elts_n
] = rxq
->elts
.no_sp
;
3093 const unsigned int elts_n
= rxq
->elts_n
;
3094 unsigned int elts_head
= rxq
->elts_head
;
3095 struct ibv_sge sges
[pkts_n
];
3097 unsigned int pkts_ret
= 0;
3100 if (unlikely(rxq
->sp
))
3101 return mlx4_rx_burst_sp(dpdk_rxq
, pkts
, pkts_n
);
3102 for (i
= 0; (i
!= pkts_n
); ++i
) {
3103 struct rxq_elt
*elt
= &(*elts
)[elts_head
];
3104 struct ibv_recv_wr
*wr
= &elt
->wr
;
3105 uint64_t wr_id
= wr
->wr_id
;
3107 struct rte_mbuf
*seg
= (void *)((uintptr_t)elt
->sge
.addr
-
3108 WR_ID(wr_id
).offset
);
3109 struct rte_mbuf
*rep
;
3112 /* Sanity checks. */
3113 assert(WR_ID(wr_id
).id
< rxq
->elts_n
);
3114 assert(wr
->sg_list
== &elt
->sge
);
3115 assert(wr
->num_sge
== 1);
3116 assert(elts_head
< rxq
->elts_n
);
3117 assert(rxq
->elts_head
< rxq
->elts_n
);
3119 * Fetch initial bytes of packet descriptor into a
3120 * cacheline while allocating rep.
3122 rte_mbuf_prefetch_part1(seg
);
3123 rte_mbuf_prefetch_part2(seg
);
3124 ret
= rxq
->if_cq
->poll_length_flags(rxq
->cq
, NULL
, NULL
,
3126 if (unlikely(ret
< 0)) {
3130 DEBUG("rxq=%p, poll_length() failed (ret=%d)",
3132 /* ibv_poll_cq() must be used in case of failure. */
3133 wcs_n
= ibv_poll_cq(rxq
->cq
, 1, &wc
);
3134 if (unlikely(wcs_n
== 0))
3136 if (unlikely(wcs_n
< 0)) {
3137 DEBUG("rxq=%p, ibv_poll_cq() failed (wcs_n=%d)",
3138 (void *)rxq
, wcs_n
);
3142 if (unlikely(wc
.status
!= IBV_WC_SUCCESS
)) {
3143 /* Whatever, just repost the offending WR. */
3144 DEBUG("rxq=%p, wr_id=%" PRIu64
": bad work"
3145 " completion status (%d): %s",
3146 (void *)rxq
, wc
.wr_id
, wc
.status
,
3147 ibv_wc_status_str(wc
.status
));
3148 #ifdef MLX4_PMD_SOFT_COUNTERS
3149 /* Increment dropped packets counter. */
3150 ++rxq
->stats
.idropped
;
3152 /* Add SGE to array for repost. */
3161 rep
= rte_mbuf_raw_alloc(rxq
->mp
);
3162 if (unlikely(rep
== NULL
)) {
3164 * Unable to allocate a replacement mbuf,
3167 DEBUG("rxq=%p, wr_id=%" PRIu32
":"
3168 " can't allocate a new mbuf",
3169 (void *)rxq
, WR_ID(wr_id
).id
);
3170 /* Increase out of memory counters. */
3171 ++rxq
->stats
.rx_nombuf
;
3172 ++rxq
->priv
->dev
->data
->rx_mbuf_alloc_failed
;
3173 /* Add SGE to array for repost. */
3178 /* Reconfigure sge to use rep instead of seg. */
3179 elt
->sge
.addr
= (uintptr_t)rep
->buf_addr
+ RTE_PKTMBUF_HEADROOM
;
3180 assert(elt
->sge
.lkey
== rxq
->mr
->lkey
);
3181 WR_ID(wr
->wr_id
).offset
=
3182 (((uintptr_t)rep
->buf_addr
+ RTE_PKTMBUF_HEADROOM
) -
3184 assert(WR_ID(wr
->wr_id
).id
== WR_ID(wr_id
).id
);
3186 /* Add SGE to array for repost. */
3189 /* Update seg information. */
3190 SET_DATA_OFF(seg
, RTE_PKTMBUF_HEADROOM
);
3192 PORT(seg
) = rxq
->port_id
;
3195 DATA_LEN(seg
) = len
;
3196 seg
->packet_type
= rxq_cq_to_pkt_type(flags
);
3197 seg
->ol_flags
= rxq_cq_to_ol_flags(rxq
, flags
);
3199 /* Return packet. */
3202 #ifdef MLX4_PMD_SOFT_COUNTERS
3203 /* Increase bytes counter. */
3204 rxq
->stats
.ibytes
+= len
;
3207 if (++elts_head
>= elts_n
)
3211 if (unlikely(i
== 0))
3215 DEBUG("%p: reposting %u WRs", (void *)rxq
, i
);
3217 ret
= rxq
->if_qp
->recv_burst(rxq
->qp
, sges
, i
);
3218 if (unlikely(ret
)) {
3219 /* Inability to repost WRs is fatal. */
3220 DEBUG("%p: recv_burst(): failed (ret=%d)",
3225 rxq
->elts_head
= elts_head
;
3226 #ifdef MLX4_PMD_SOFT_COUNTERS
3227 /* Increase packets counter. */
3228 rxq
->stats
.ipackets
+= pkts_ret
;
3234 * DPDK callback for RX in secondary processes.
3236 * This function configures all queues from primary process information
3237 * if necessary before reverting to the normal RX burst callback.
3240 * Generic pointer to RX queue structure.
3242 * Array to store received packets.
3244 * Maximum number of packets in array.
3247 * Number of packets successfully received (<= pkts_n).
3250 mlx4_rx_burst_secondary_setup(void *dpdk_rxq
, struct rte_mbuf
**pkts
,
3253 struct rxq
*rxq
= dpdk_rxq
;
3254 struct priv
*priv
= mlx4_secondary_data_setup(rxq
->priv
);
3255 struct priv
*primary_priv
;
3261 mlx4_secondary_data
[priv
->dev
->data
->port_id
].primary_priv
;
3262 /* Look for queue index in both private structures. */
3263 for (index
= 0; index
!= priv
->rxqs_n
; ++index
)
3264 if (((*primary_priv
->rxqs
)[index
] == rxq
) ||
3265 ((*priv
->rxqs
)[index
] == rxq
))
3267 if (index
== priv
->rxqs_n
)
3269 rxq
= (*priv
->rxqs
)[index
];
3270 return priv
->dev
->rx_pkt_burst(rxq
, pkts
, pkts_n
);
3274 * Allocate a Queue Pair.
3275 * Optionally setup inline receive if supported.
3278 * Pointer to private structure.
3280 * Completion queue to associate with QP.
3282 * Number of descriptors in QP (hint only).
3285 * QP pointer or NULL in case of error.
3287 static struct ibv_qp
*
3288 rxq_setup_qp(struct priv
*priv
, struct ibv_cq
*cq
, uint16_t desc
,
3289 struct ibv_exp_res_domain
*rd
)
3291 struct ibv_exp_qp_init_attr attr
= {
3292 /* CQ to be associated with the send queue. */
3294 /* CQ to be associated with the receive queue. */
3297 /* Max number of outstanding WRs. */
3298 .max_recv_wr
= ((priv
->device_attr
.max_qp_wr
< desc
) ?
3299 priv
->device_attr
.max_qp_wr
:
3301 /* Max number of scatter/gather elements in a WR. */
3302 .max_recv_sge
= ((priv
->device_attr
.max_sge
<
3303 MLX4_PMD_SGE_WR_N
) ?
3304 priv
->device_attr
.max_sge
:
3307 .qp_type
= IBV_QPT_RAW_PACKET
,
3308 .comp_mask
= (IBV_EXP_QP_INIT_ATTR_PD
|
3309 IBV_EXP_QP_INIT_ATTR_RES_DOMAIN
),
3315 attr
.max_inl_recv
= priv
->inl_recv_size
;
3316 attr
.comp_mask
|= IBV_EXP_QP_INIT_ATTR_INL_RECV
;
3318 return ibv_exp_create_qp(priv
->ctx
, &attr
);
3324 * Allocate a RSS Queue Pair.
3325 * Optionally setup inline receive if supported.
3328 * Pointer to private structure.
3330 * Completion queue to associate with QP.
3332 * Number of descriptors in QP (hint only).
3334 * If nonzero, create a parent QP, otherwise a child.
3337 * QP pointer or NULL in case of error.
3339 static struct ibv_qp
*
3340 rxq_setup_qp_rss(struct priv
*priv
, struct ibv_cq
*cq
, uint16_t desc
,
3341 int parent
, struct ibv_exp_res_domain
*rd
)
3343 struct ibv_exp_qp_init_attr attr
= {
3344 /* CQ to be associated with the send queue. */
3346 /* CQ to be associated with the receive queue. */
3349 /* Max number of outstanding WRs. */
3350 .max_recv_wr
= ((priv
->device_attr
.max_qp_wr
< desc
) ?
3351 priv
->device_attr
.max_qp_wr
:
3353 /* Max number of scatter/gather elements in a WR. */
3354 .max_recv_sge
= ((priv
->device_attr
.max_sge
<
3355 MLX4_PMD_SGE_WR_N
) ?
3356 priv
->device_attr
.max_sge
:
3359 .qp_type
= IBV_QPT_RAW_PACKET
,
3360 .comp_mask
= (IBV_EXP_QP_INIT_ATTR_PD
|
3361 IBV_EXP_QP_INIT_ATTR_RES_DOMAIN
|
3362 IBV_EXP_QP_INIT_ATTR_QPG
),
3368 attr
.max_inl_recv
= priv
->inl_recv_size
,
3369 attr
.comp_mask
|= IBV_EXP_QP_INIT_ATTR_INL_RECV
;
3372 attr
.qpg
.qpg_type
= IBV_EXP_QPG_PARENT
;
3373 /* TSS isn't necessary. */
3374 attr
.qpg
.parent_attrib
.tss_child_count
= 0;
3375 attr
.qpg
.parent_attrib
.rss_child_count
=
3376 rte_align32pow2(priv
->rxqs_n
+ 1) >> 1;
3377 DEBUG("initializing parent RSS queue");
3379 attr
.qpg
.qpg_type
= IBV_EXP_QPG_CHILD_RX
;
3380 attr
.qpg
.qpg_parent
= priv
->rxq_parent
.qp
;
3381 DEBUG("initializing child RSS queue");
3383 return ibv_exp_create_qp(priv
->ctx
, &attr
);
3386 #endif /* RSS_SUPPORT */
3389 * Reconfigure a RX queue with new parameters.
3391 * rxq_rehash() does not allocate mbufs, which, if not done from the right
3392 * thread (such as a control thread), may corrupt the pool.
3393 * In case of failure, the queue is left untouched.
3396 * Pointer to Ethernet device structure.
3401 * 0 on success, errno value on failure.
3404 rxq_rehash(struct rte_eth_dev
*dev
, struct rxq
*rxq
)
3406 struct priv
*priv
= rxq
->priv
;
3407 struct rxq tmpl
= *rxq
;
3408 unsigned int mbuf_n
;
3409 unsigned int desc_n
;
3410 struct rte_mbuf
**pool
;
3412 struct ibv_exp_qp_attr mod
;
3413 struct ibv_recv_wr
*bad_wr
;
3414 unsigned int mb_len
;
3416 int parent
= (rxq
== &priv
->rxq_parent
);
3419 ERROR("%p: cannot rehash parent queue %p",
3420 (void *)dev
, (void *)rxq
);
3423 mb_len
= rte_pktmbuf_data_room_size(rxq
->mp
);
3424 DEBUG("%p: rehashing queue %p", (void *)dev
, (void *)rxq
);
3425 /* Number of descriptors and mbufs currently allocated. */
3426 desc_n
= (tmpl
.elts_n
* (tmpl
.sp
? MLX4_PMD_SGE_WR_N
: 1));
3428 /* Toggle RX checksum offload if hardware supports it. */
3429 if (priv
->hw_csum
) {
3430 tmpl
.csum
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3431 rxq
->csum
= tmpl
.csum
;
3433 if (priv
->hw_csum_l2tun
) {
3434 tmpl
.csum_l2tun
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3435 rxq
->csum_l2tun
= tmpl
.csum_l2tun
;
3437 /* Enable scattered packets support for this queue if necessary. */
3438 assert(mb_len
>= RTE_PKTMBUF_HEADROOM
);
3439 if (dev
->data
->dev_conf
.rxmode
.enable_scatter
&&
3440 (dev
->data
->dev_conf
.rxmode
.max_rx_pkt_len
>
3441 (mb_len
- RTE_PKTMBUF_HEADROOM
))) {
3443 desc_n
/= MLX4_PMD_SGE_WR_N
;
3446 DEBUG("%p: %s scattered packets support (%u WRs)",
3447 (void *)dev
, (tmpl
.sp
? "enabling" : "disabling"), desc_n
);
3448 /* If scatter mode is the same as before, nothing to do. */
3449 if (tmpl
.sp
== rxq
->sp
) {
3450 DEBUG("%p: nothing to do", (void *)dev
);
3453 /* Remove attached flows if RSS is disabled (no parent queue). */
3455 rxq_allmulticast_disable(&tmpl
);
3456 rxq_promiscuous_disable(&tmpl
);
3457 rxq_mac_addrs_del(&tmpl
);
3458 /* Update original queue in case of failure. */
3459 rxq
->allmulti_flow
= tmpl
.allmulti_flow
;
3460 rxq
->promisc_flow
= tmpl
.promisc_flow
;
3461 memcpy(rxq
->mac_configured
, tmpl
.mac_configured
,
3462 sizeof(rxq
->mac_configured
));
3463 memcpy(rxq
->mac_flow
, tmpl
.mac_flow
, sizeof(rxq
->mac_flow
));
3465 /* From now on, any failure will render the queue unusable.
3466 * Reinitialize QP. */
3467 mod
= (struct ibv_exp_qp_attr
){ .qp_state
= IBV_QPS_RESET
};
3468 err
= ibv_exp_modify_qp(tmpl
.qp
, &mod
, IBV_EXP_QP_STATE
);
3470 ERROR("%p: cannot reset QP: %s", (void *)dev
, strerror(err
));
3474 err
= ibv_resize_cq(tmpl
.cq
, desc_n
);
3476 ERROR("%p: cannot resize CQ: %s", (void *)dev
, strerror(err
));
3480 mod
= (struct ibv_exp_qp_attr
){
3481 /* Move the QP to this state. */
3482 .qp_state
= IBV_QPS_INIT
,
3483 /* Primary port number. */
3484 .port_num
= priv
->port
3486 err
= ibv_exp_modify_qp(tmpl
.qp
, &mod
,
3489 (parent
? IBV_EXP_QP_GROUP_RSS
: 0) |
3490 #endif /* RSS_SUPPORT */
3493 ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
3494 (void *)dev
, strerror(err
));
3498 /* Reconfigure flows. Do not care for errors. */
3500 rxq_mac_addrs_add(&tmpl
);
3502 rxq_promiscuous_enable(&tmpl
);
3504 rxq_allmulticast_enable(&tmpl
);
3505 /* Update original queue in case of failure. */
3506 rxq
->allmulti_flow
= tmpl
.allmulti_flow
;
3507 rxq
->promisc_flow
= tmpl
.promisc_flow
;
3508 memcpy(rxq
->mac_configured
, tmpl
.mac_configured
,
3509 sizeof(rxq
->mac_configured
));
3510 memcpy(rxq
->mac_flow
, tmpl
.mac_flow
, sizeof(rxq
->mac_flow
));
3512 /* Allocate pool. */
3513 pool
= rte_malloc(__func__
, (mbuf_n
* sizeof(*pool
)), 0);
3515 ERROR("%p: cannot allocate memory", (void *)dev
);
3518 /* Snatch mbufs from original queue. */
3521 struct rxq_elt_sp (*elts
)[rxq
->elts_n
] = rxq
->elts
.sp
;
3523 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
3524 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
3527 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
3528 assert(elt
->bufs
[j
] != NULL
);
3529 pool
[k
++] = elt
->bufs
[j
];
3533 struct rxq_elt (*elts
)[rxq
->elts_n
] = rxq
->elts
.no_sp
;
3535 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
3536 struct rxq_elt
*elt
= &(*elts
)[i
];
3537 struct rte_mbuf
*buf
= (void *)
3538 ((uintptr_t)elt
->sge
.addr
-
3539 WR_ID(elt
->wr
.wr_id
).offset
);
3541 assert(WR_ID(elt
->wr
.wr_id
).id
== i
);
3545 assert(k
== mbuf_n
);
3547 tmpl
.elts
.sp
= NULL
;
3548 assert((void *)&tmpl
.elts
.sp
== (void *)&tmpl
.elts
.no_sp
);
3550 rxq_alloc_elts_sp(&tmpl
, desc_n
, pool
) :
3551 rxq_alloc_elts(&tmpl
, desc_n
, pool
));
3553 ERROR("%p: cannot reallocate WRs, aborting", (void *)dev
);
3558 assert(tmpl
.elts_n
== desc_n
);
3559 assert(tmpl
.elts
.sp
!= NULL
);
3561 /* Clean up original data. */
3563 rte_free(rxq
->elts
.sp
);
3564 rxq
->elts
.sp
= NULL
;
3566 err
= ibv_post_recv(tmpl
.qp
,
3568 &(*tmpl
.elts
.sp
)[0].wr
:
3569 &(*tmpl
.elts
.no_sp
)[0].wr
),
3572 ERROR("%p: ibv_post_recv() failed for WR %p: %s",
3578 mod
= (struct ibv_exp_qp_attr
){
3579 .qp_state
= IBV_QPS_RTR
3581 err
= ibv_exp_modify_qp(tmpl
.qp
, &mod
, IBV_EXP_QP_STATE
);
3583 ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
3584 (void *)dev
, strerror(err
));
3592 * Configure a RX queue.
3595 * Pointer to Ethernet device structure.
3597 * Pointer to RX queue structure.
3599 * Number of descriptors to configure in queue.
3601 * NUMA socket on which memory must be allocated.
3603 * If true, the queue is disabled because its index is higher or
3604 * equal to the real number of queues, which must be a power of 2.
3606 * Thresholds parameters.
3608 * Memory pool for buffer allocations.
3611 * 0 on success, errno value on failure.
3614 rxq_setup(struct rte_eth_dev
*dev
, struct rxq
*rxq
, uint16_t desc
,
3615 unsigned int socket
, int inactive
, const struct rte_eth_rxconf
*conf
,
3616 struct rte_mempool
*mp
)
3618 struct priv
*priv
= dev
->data
->dev_private
;
3624 struct ibv_exp_qp_attr mod
;
3626 struct ibv_exp_query_intf_params params
;
3627 struct ibv_exp_cq_init_attr cq
;
3628 struct ibv_exp_res_domain_init_attr rd
;
3630 enum ibv_exp_query_intf_status status
;
3631 struct ibv_recv_wr
*bad_wr
;
3632 unsigned int mb_len
;
3634 int parent
= (rxq
== &priv
->rxq_parent
);
3636 (void)conf
; /* Thresholds configuration (ignored). */
3638 * If this is a parent queue, hardware must support RSS and
3639 * RSS must be enabled.
3641 assert((!parent
) || ((priv
->hw_rss
) && (priv
->rss
)));
3643 /* Even if unused, ibv_create_cq() requires at least one
3648 mb_len
= rte_pktmbuf_data_room_size(mp
);
3649 if ((desc
== 0) || (desc
% MLX4_PMD_SGE_WR_N
)) {
3650 ERROR("%p: invalid number of RX descriptors (must be a"
3651 " multiple of %d)", (void *)dev
, MLX4_PMD_SGE_WR_N
);
3654 /* Toggle RX checksum offload if hardware supports it. */
3656 tmpl
.csum
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3657 if (priv
->hw_csum_l2tun
)
3658 tmpl
.csum_l2tun
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3659 /* Enable scattered packets support for this queue if necessary. */
3660 assert(mb_len
>= RTE_PKTMBUF_HEADROOM
);
3661 if (dev
->data
->dev_conf
.rxmode
.max_rx_pkt_len
<=
3662 (mb_len
- RTE_PKTMBUF_HEADROOM
)) {
3664 } else if (dev
->data
->dev_conf
.rxmode
.enable_scatter
) {
3666 desc
/= MLX4_PMD_SGE_WR_N
;
3668 WARN("%p: the requested maximum Rx packet size (%u) is"
3669 " larger than a single mbuf (%u) and scattered"
3670 " mode has not been requested",
3672 dev
->data
->dev_conf
.rxmode
.max_rx_pkt_len
,
3673 mb_len
- RTE_PKTMBUF_HEADROOM
);
3675 DEBUG("%p: %s scattered packets support (%u WRs)",
3676 (void *)dev
, (tmpl
.sp
? "enabling" : "disabling"), desc
);
3677 /* Use the entire RX mempool as the memory region. */
3678 tmpl
.mr
= mlx4_mp2mr(priv
->pd
, mp
);
3679 if (tmpl
.mr
== NULL
) {
3681 ERROR("%p: MR creation failure: %s",
3682 (void *)dev
, strerror(ret
));
3686 attr
.rd
= (struct ibv_exp_res_domain_init_attr
){
3687 .comp_mask
= (IBV_EXP_RES_DOMAIN_THREAD_MODEL
|
3688 IBV_EXP_RES_DOMAIN_MSG_MODEL
),
3689 .thread_model
= IBV_EXP_THREAD_SINGLE
,
3690 .msg_model
= IBV_EXP_MSG_HIGH_BW
,
3692 tmpl
.rd
= ibv_exp_create_res_domain(priv
->ctx
, &attr
.rd
);
3693 if (tmpl
.rd
== NULL
) {
3695 ERROR("%p: RD creation failure: %s",
3696 (void *)dev
, strerror(ret
));
3699 attr
.cq
= (struct ibv_exp_cq_init_attr
){
3700 .comp_mask
= IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN
,
3701 .res_domain
= tmpl
.rd
,
3703 tmpl
.cq
= ibv_exp_create_cq(priv
->ctx
, desc
, NULL
, NULL
, 0, &attr
.cq
);
3704 if (tmpl
.cq
== NULL
) {
3706 ERROR("%p: CQ creation failure: %s",
3707 (void *)dev
, strerror(ret
));
3710 DEBUG("priv->device_attr.max_qp_wr is %d",
3711 priv
->device_attr
.max_qp_wr
);
3712 DEBUG("priv->device_attr.max_sge is %d",
3713 priv
->device_attr
.max_sge
);
3715 if (priv
->rss
&& !inactive
)
3716 tmpl
.qp
= rxq_setup_qp_rss(priv
, tmpl
.cq
, desc
, parent
,
3719 #endif /* RSS_SUPPORT */
3720 tmpl
.qp
= rxq_setup_qp(priv
, tmpl
.cq
, desc
, tmpl
.rd
);
3721 if (tmpl
.qp
== NULL
) {
3722 ret
= (errno
? errno
: EINVAL
);
3723 ERROR("%p: QP creation failure: %s",
3724 (void *)dev
, strerror(ret
));
3727 mod
= (struct ibv_exp_qp_attr
){
3728 /* Move the QP to this state. */
3729 .qp_state
= IBV_QPS_INIT
,
3730 /* Primary port number. */
3731 .port_num
= priv
->port
3733 ret
= ibv_exp_modify_qp(tmpl
.qp
, &mod
,
3736 (parent
? IBV_EXP_QP_GROUP_RSS
: 0) |
3737 #endif /* RSS_SUPPORT */
3740 ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
3741 (void *)dev
, strerror(ret
));
3744 if ((parent
) || (!priv
->rss
)) {
3745 /* Configure MAC and broadcast addresses. */
3746 ret
= rxq_mac_addrs_add(&tmpl
);
3748 ERROR("%p: QP flow attachment failed: %s",
3749 (void *)dev
, strerror(ret
));
3753 /* Allocate descriptors for RX queues, except for the RSS parent. */
3757 ret
= rxq_alloc_elts_sp(&tmpl
, desc
, NULL
);
3759 ret
= rxq_alloc_elts(&tmpl
, desc
, NULL
);
3761 ERROR("%p: RXQ allocation failed: %s",
3762 (void *)dev
, strerror(ret
));
3765 ret
= ibv_post_recv(tmpl
.qp
,
3767 &(*tmpl
.elts
.sp
)[0].wr
:
3768 &(*tmpl
.elts
.no_sp
)[0].wr
),
3771 ERROR("%p: ibv_post_recv() failed for WR %p: %s",
3778 mod
= (struct ibv_exp_qp_attr
){
3779 .qp_state
= IBV_QPS_RTR
3781 ret
= ibv_exp_modify_qp(tmpl
.qp
, &mod
, IBV_EXP_QP_STATE
);
3783 ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
3784 (void *)dev
, strerror(ret
));
3788 tmpl
.port_id
= dev
->data
->port_id
;
3789 DEBUG("%p: RTE port ID: %u", (void *)rxq
, tmpl
.port_id
);
3790 attr
.params
= (struct ibv_exp_query_intf_params
){
3791 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
3792 .intf
= IBV_EXP_INTF_CQ
,
3795 tmpl
.if_cq
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
3796 if (tmpl
.if_cq
== NULL
) {
3797 ERROR("%p: CQ interface family query failed with status %d",
3798 (void *)dev
, status
);
3801 attr
.params
= (struct ibv_exp_query_intf_params
){
3802 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
3803 .intf
= IBV_EXP_INTF_QP_BURST
,
3806 tmpl
.if_qp
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
3807 if (tmpl
.if_qp
== NULL
) {
3808 ERROR("%p: QP interface family query failed with status %d",
3809 (void *)dev
, status
);
3812 /* Clean up rxq in case we're reinitializing it. */
3813 DEBUG("%p: cleaning-up old rxq just in case", (void *)rxq
);
3816 DEBUG("%p: rxq updated with %p", (void *)rxq
, (void *)&tmpl
);
3826 * DPDK callback to configure a RX queue.
3829 * Pointer to Ethernet device structure.
3833 * Number of descriptors to configure in queue.
3835 * NUMA socket on which memory must be allocated.
3837 * Thresholds parameters.
3839 * Memory pool for buffer allocations.
3842 * 0 on success, negative errno value on failure.
3845 mlx4_rx_queue_setup(struct rte_eth_dev
*dev
, uint16_t idx
, uint16_t desc
,
3846 unsigned int socket
, const struct rte_eth_rxconf
*conf
,
3847 struct rte_mempool
*mp
)
3849 struct priv
*priv
= dev
->data
->dev_private
;
3850 struct rxq
*rxq
= (*priv
->rxqs
)[idx
];
3854 if (mlx4_is_secondary())
3855 return -E_RTE_SECONDARY
;
3857 DEBUG("%p: configuring queue %u for %u descriptors",
3858 (void *)dev
, idx
, desc
);
3859 if (idx
>= priv
->rxqs_n
) {
3860 ERROR("%p: queue index out of range (%u >= %u)",
3861 (void *)dev
, idx
, priv
->rxqs_n
);
3866 DEBUG("%p: reusing already allocated queue index %u (%p)",
3867 (void *)dev
, idx
, (void *)rxq
);
3868 if (priv
->started
) {
3872 (*priv
->rxqs
)[idx
] = NULL
;
3875 rxq
= rte_calloc_socket("RXQ", 1, sizeof(*rxq
), 0, socket
);
3877 ERROR("%p: unable to allocate queue index %u",
3883 if (idx
>= rte_align32pow2(priv
->rxqs_n
+ 1) >> 1)
3885 ret
= rxq_setup(dev
, rxq
, desc
, socket
, inactive
, conf
, mp
);
3889 rxq
->stats
.idx
= idx
;
3890 DEBUG("%p: adding RX queue %p to list",
3891 (void *)dev
, (void *)rxq
);
3892 (*priv
->rxqs
)[idx
] = rxq
;
3893 /* Update receive callback. */
3895 dev
->rx_pkt_burst
= mlx4_rx_burst_sp
;
3897 dev
->rx_pkt_burst
= mlx4_rx_burst
;
3904 * DPDK callback to release a RX queue.
3907 * Generic RX queue pointer.
3910 mlx4_rx_queue_release(void *dpdk_rxq
)
3912 struct rxq
*rxq
= (struct rxq
*)dpdk_rxq
;
3916 if (mlx4_is_secondary())
3922 assert(rxq
!= &priv
->rxq_parent
);
3923 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
3924 if ((*priv
->rxqs
)[i
] == rxq
) {
3925 DEBUG("%p: removing RX queue %p from list",
3926 (void *)priv
->dev
, (void *)rxq
);
3927 (*priv
->rxqs
)[i
] = NULL
;
3936 priv_dev_interrupt_handler_install(struct priv
*, struct rte_eth_dev
*);
3939 priv_dev_removal_interrupt_handler_install(struct priv
*, struct rte_eth_dev
*);
3942 priv_dev_link_interrupt_handler_install(struct priv
*, struct rte_eth_dev
*);
3945 * DPDK callback to start the device.
3947 * Simulate device start by attaching all configured flows.
3950 * Pointer to Ethernet device structure.
3953 * 0 on success, negative errno value on failure.
3956 mlx4_dev_start(struct rte_eth_dev
*dev
)
3958 struct priv
*priv
= dev
->data
->dev_private
;
3964 if (mlx4_is_secondary())
3965 return -E_RTE_SECONDARY
;
3967 if (priv
->started
) {
3971 DEBUG("%p: attaching configured flows to all RX queues", (void *)dev
);
3974 rxq
= &priv
->rxq_parent
;
3977 rxq
= (*priv
->rxqs
)[0];
3980 /* Iterate only once when RSS is enabled. */
3982 /* Ignore nonexistent RX queues. */
3985 ret
= rxq_mac_addrs_add(rxq
);
3986 if (!ret
&& priv
->promisc
)
3987 ret
= rxq_promiscuous_enable(rxq
);
3988 if (!ret
&& priv
->allmulti
)
3989 ret
= rxq_allmulticast_enable(rxq
);
3992 WARN("%p: QP flow attachment failed: %s",
3993 (void *)dev
, strerror(ret
));
3995 } while ((--r
) && ((rxq
= (*priv
->rxqs
)[++i
]), i
));
3996 ret
= priv_dev_link_interrupt_handler_install(priv
, dev
);
3998 ERROR("%p: LSC handler install failed",
4002 ret
= priv_dev_removal_interrupt_handler_install(priv
, dev
);
4004 ERROR("%p: RMV handler install failed",
4008 ret
= mlx4_priv_flow_start(priv
);
4010 ERROR("%p: flow start failed: %s",
4011 (void *)dev
, strerror(ret
));
4019 rxq
= (*priv
->rxqs
)[i
--];
4021 rxq_allmulticast_disable(rxq
);
4022 rxq_promiscuous_disable(rxq
);
4023 rxq_mac_addrs_del(rxq
);
4032 * DPDK callback to stop the device.
4034 * Simulate device stop by detaching all configured flows.
4037 * Pointer to Ethernet device structure.
4040 mlx4_dev_stop(struct rte_eth_dev
*dev
)
4042 struct priv
*priv
= dev
->data
->dev_private
;
4047 if (mlx4_is_secondary())
4050 if (!priv
->started
) {
4054 DEBUG("%p: detaching flows from all RX queues", (void *)dev
);
4057 rxq
= &priv
->rxq_parent
;
4060 rxq
= (*priv
->rxqs
)[0];
4063 mlx4_priv_flow_stop(priv
);
4064 /* Iterate only once when RSS is enabled. */
4066 /* Ignore nonexistent RX queues. */
4069 rxq_allmulticast_disable(rxq
);
4070 rxq_promiscuous_disable(rxq
);
4071 rxq_mac_addrs_del(rxq
);
4072 } while ((--r
) && ((rxq
= (*priv
->rxqs
)[++i
]), i
));
4077 * Dummy DPDK callback for TX.
4079 * This function is used to temporarily replace the real callback during
4080 * unsafe control operations on the queue, or in case of error.
4083 * Generic pointer to TX queue structure.
4085 * Packets to transmit.
4087 * Number of packets in array.
4090 * Number of packets successfully transmitted (<= pkts_n).
4093 removed_tx_burst(void *dpdk_txq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
4102 * Dummy DPDK callback for RX.
4104 * This function is used to temporarily replace the real callback during
4105 * unsafe control operations on the queue, or in case of error.
4108 * Generic pointer to RX queue structure.
4110 * Array to store received packets.
4112 * Maximum number of packets in array.
4115 * Number of packets successfully received (<= pkts_n).
4118 removed_rx_burst(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
4127 priv_dev_interrupt_handler_uninstall(struct priv
*, struct rte_eth_dev
*);
4130 priv_dev_removal_interrupt_handler_uninstall(struct priv
*,
4131 struct rte_eth_dev
*);
4134 priv_dev_link_interrupt_handler_uninstall(struct priv
*, struct rte_eth_dev
*);
4137 * DPDK callback to close the device.
4139 * Destroy all queues and objects, free memory.
4142 * Pointer to Ethernet device structure.
4145 mlx4_dev_close(struct rte_eth_dev
*dev
)
4147 struct priv
*priv
= mlx4_get_priv(dev
);
4154 DEBUG("%p: closing device \"%s\"",
4156 ((priv
->ctx
!= NULL
) ? priv
->ctx
->device
->name
: ""));
4157 /* Prevent crashes when queues are still in use. This is unfortunately
4158 * still required for DPDK 1.3 because some programs (such as testpmd)
4159 * never release them before closing the device. */
4160 dev
->rx_pkt_burst
= removed_rx_burst
;
4161 dev
->tx_pkt_burst
= removed_tx_burst
;
4162 if (priv
->rxqs
!= NULL
) {
4163 /* XXX race condition if mlx4_rx_burst() is still running. */
4165 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4166 tmp
= (*priv
->rxqs
)[i
];
4169 (*priv
->rxqs
)[i
] = NULL
;
4176 if (priv
->txqs
!= NULL
) {
4177 /* XXX race condition if mlx4_tx_burst() is still running. */
4179 for (i
= 0; (i
!= priv
->txqs_n
); ++i
) {
4180 tmp
= (*priv
->txqs
)[i
];
4183 (*priv
->txqs
)[i
] = NULL
;
4191 rxq_cleanup(&priv
->rxq_parent
);
4192 if (priv
->pd
!= NULL
) {
4193 assert(priv
->ctx
!= NULL
);
4194 claim_zero(ibv_dealloc_pd(priv
->pd
));
4195 claim_zero(ibv_close_device(priv
->ctx
));
4197 assert(priv
->ctx
== NULL
);
4198 priv_dev_removal_interrupt_handler_uninstall(priv
, dev
);
4199 priv_dev_link_interrupt_handler_uninstall(priv
, dev
);
4201 memset(priv
, 0, sizeof(*priv
));
4205 * Change the link state (UP / DOWN).
4208 * Pointer to Ethernet device private data.
4210 * Nonzero for link up, otherwise link down.
4213 * 0 on success, errno value on failure.
4216 priv_set_link(struct priv
*priv
, int up
)
4218 struct rte_eth_dev
*dev
= priv
->dev
;
4223 err
= priv_set_flags(priv
, ~IFF_UP
, IFF_UP
);
4226 for (i
= 0; i
< priv
->rxqs_n
; i
++)
4227 if ((*priv
->rxqs
)[i
]->sp
)
4229 /* Check if an sp queue exists.
4230 * Note: Some old frames might be received.
4232 if (i
== priv
->rxqs_n
)
4233 dev
->rx_pkt_burst
= mlx4_rx_burst
;
4235 dev
->rx_pkt_burst
= mlx4_rx_burst_sp
;
4236 dev
->tx_pkt_burst
= mlx4_tx_burst
;
4238 err
= priv_set_flags(priv
, ~IFF_UP
, ~IFF_UP
);
4241 dev
->rx_pkt_burst
= removed_rx_burst
;
4242 dev
->tx_pkt_burst
= removed_tx_burst
;
4248 * DPDK callback to bring the link DOWN.
4251 * Pointer to Ethernet device structure.
4254 * 0 on success, errno value on failure.
4257 mlx4_set_link_down(struct rte_eth_dev
*dev
)
4259 struct priv
*priv
= dev
->data
->dev_private
;
4263 err
= priv_set_link(priv
, 0);
4269 * DPDK callback to bring the link UP.
4272 * Pointer to Ethernet device structure.
4275 * 0 on success, errno value on failure.
4278 mlx4_set_link_up(struct rte_eth_dev
*dev
)
4280 struct priv
*priv
= dev
->data
->dev_private
;
4284 err
= priv_set_link(priv
, 1);
4289 * DPDK callback to get information about the device.
4292 * Pointer to Ethernet device structure.
4294 * Info structure output buffer.
4297 mlx4_dev_infos_get(struct rte_eth_dev
*dev
, struct rte_eth_dev_info
*info
)
4299 struct priv
*priv
= mlx4_get_priv(dev
);
4301 char ifname
[IF_NAMESIZE
];
4303 info
->pci_dev
= RTE_DEV_TO_PCI(dev
->device
);
4308 /* FIXME: we should ask the device for these values. */
4309 info
->min_rx_bufsize
= 32;
4310 info
->max_rx_pktlen
= 65536;
4312 * Since we need one CQ per QP, the limit is the minimum number
4313 * between the two values.
4315 max
= ((priv
->device_attr
.max_cq
> priv
->device_attr
.max_qp
) ?
4316 priv
->device_attr
.max_qp
: priv
->device_attr
.max_cq
);
4317 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
4320 info
->max_rx_queues
= max
;
4321 info
->max_tx_queues
= max
;
4322 /* Last array entry is reserved for broadcast. */
4323 info
->max_mac_addrs
= (elemof(priv
->mac
) - 1);
4324 info
->rx_offload_capa
=
4326 (DEV_RX_OFFLOAD_IPV4_CKSUM
|
4327 DEV_RX_OFFLOAD_UDP_CKSUM
|
4328 DEV_RX_OFFLOAD_TCP_CKSUM
) :
4330 info
->tx_offload_capa
=
4332 (DEV_TX_OFFLOAD_IPV4_CKSUM
|
4333 DEV_TX_OFFLOAD_UDP_CKSUM
|
4334 DEV_TX_OFFLOAD_TCP_CKSUM
) :
4336 if (priv_get_ifname(priv
, &ifname
) == 0)
4337 info
->if_index
= if_nametoindex(ifname
);
4340 ETH_LINK_SPEED_10G
|
4341 ETH_LINK_SPEED_20G
|
4342 ETH_LINK_SPEED_40G
|
4347 static const uint32_t *
4348 mlx4_dev_supported_ptypes_get(struct rte_eth_dev
*dev
)
4350 static const uint32_t ptypes
[] = {
4351 /* refers to rxq_cq_to_pkt_type() */
4354 RTE_PTYPE_INNER_L3_IPV4
,
4355 RTE_PTYPE_INNER_L3_IPV6
,
4359 if (dev
->rx_pkt_burst
== mlx4_rx_burst
||
4360 dev
->rx_pkt_burst
== mlx4_rx_burst_sp
)
4366 * DPDK callback to get device statistics.
4369 * Pointer to Ethernet device structure.
4371 * Stats structure output buffer.
4374 mlx4_stats_get(struct rte_eth_dev
*dev
, struct rte_eth_stats
*stats
)
4376 struct priv
*priv
= mlx4_get_priv(dev
);
4377 struct rte_eth_stats tmp
= {0};
4384 /* Add software counters. */
4385 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4386 struct rxq
*rxq
= (*priv
->rxqs
)[i
];
4390 idx
= rxq
->stats
.idx
;
4391 if (idx
< RTE_ETHDEV_QUEUE_STAT_CNTRS
) {
4392 #ifdef MLX4_PMD_SOFT_COUNTERS
4393 tmp
.q_ipackets
[idx
] += rxq
->stats
.ipackets
;
4394 tmp
.q_ibytes
[idx
] += rxq
->stats
.ibytes
;
4396 tmp
.q_errors
[idx
] += (rxq
->stats
.idropped
+
4397 rxq
->stats
.rx_nombuf
);
4399 #ifdef MLX4_PMD_SOFT_COUNTERS
4400 tmp
.ipackets
+= rxq
->stats
.ipackets
;
4401 tmp
.ibytes
+= rxq
->stats
.ibytes
;
4403 tmp
.ierrors
+= rxq
->stats
.idropped
;
4404 tmp
.rx_nombuf
+= rxq
->stats
.rx_nombuf
;
4406 for (i
= 0; (i
!= priv
->txqs_n
); ++i
) {
4407 struct txq
*txq
= (*priv
->txqs
)[i
];
4411 idx
= txq
->stats
.idx
;
4412 if (idx
< RTE_ETHDEV_QUEUE_STAT_CNTRS
) {
4413 #ifdef MLX4_PMD_SOFT_COUNTERS
4414 tmp
.q_opackets
[idx
] += txq
->stats
.opackets
;
4415 tmp
.q_obytes
[idx
] += txq
->stats
.obytes
;
4417 tmp
.q_errors
[idx
] += txq
->stats
.odropped
;
4419 #ifdef MLX4_PMD_SOFT_COUNTERS
4420 tmp
.opackets
+= txq
->stats
.opackets
;
4421 tmp
.obytes
+= txq
->stats
.obytes
;
4423 tmp
.oerrors
+= txq
->stats
.odropped
;
4425 #ifndef MLX4_PMD_SOFT_COUNTERS
4426 /* FIXME: retrieve and add hardware counters. */
4433 * DPDK callback to clear device statistics.
4436 * Pointer to Ethernet device structure.
4439 mlx4_stats_reset(struct rte_eth_dev
*dev
)
4441 struct priv
*priv
= mlx4_get_priv(dev
);
4448 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4449 if ((*priv
->rxqs
)[i
] == NULL
)
4451 idx
= (*priv
->rxqs
)[i
]->stats
.idx
;
4452 (*priv
->rxqs
)[i
]->stats
=
4453 (struct mlx4_rxq_stats
){ .idx
= idx
};
4455 for (i
= 0; (i
!= priv
->txqs_n
); ++i
) {
4456 if ((*priv
->txqs
)[i
] == NULL
)
4458 idx
= (*priv
->txqs
)[i
]->stats
.idx
;
4459 (*priv
->txqs
)[i
]->stats
=
4460 (struct mlx4_txq_stats
){ .idx
= idx
};
4462 #ifndef MLX4_PMD_SOFT_COUNTERS
4463 /* FIXME: reset hardware counters. */
4469 * DPDK callback to remove a MAC address.
4472 * Pointer to Ethernet device structure.
4474 * MAC address index.
4477 mlx4_mac_addr_remove(struct rte_eth_dev
*dev
, uint32_t index
)
4479 struct priv
*priv
= dev
->data
->dev_private
;
4481 if (mlx4_is_secondary())
4484 DEBUG("%p: removing MAC address from index %" PRIu32
,
4485 (void *)dev
, index
);
4486 /* Last array entry is reserved for broadcast. */
4487 if (index
>= (elemof(priv
->mac
) - 1))
4489 priv_mac_addr_del(priv
, index
);
4495 * DPDK callback to add a MAC address.
4498 * Pointer to Ethernet device structure.
4500 * MAC address to register.
4502 * MAC address index.
4504 * VMDq pool index to associate address with (ignored).
4507 mlx4_mac_addr_add(struct rte_eth_dev
*dev
, struct ether_addr
*mac_addr
,
4508 uint32_t index
, uint32_t vmdq
)
4510 struct priv
*priv
= dev
->data
->dev_private
;
4513 if (mlx4_is_secondary())
4517 DEBUG("%p: adding MAC address at index %" PRIu32
,
4518 (void *)dev
, index
);
4519 /* Last array entry is reserved for broadcast. */
4520 if (index
>= (elemof(priv
->mac
) - 1)) {
4524 re
= priv_mac_addr_add(priv
, index
,
4525 (const uint8_t (*)[ETHER_ADDR_LEN
])
4526 mac_addr
->addr_bytes
);
4533 * DPDK callback to set the primary MAC address.
4536 * Pointer to Ethernet device structure.
4538 * MAC address to register.
4541 mlx4_mac_addr_set(struct rte_eth_dev
*dev
, struct ether_addr
*mac_addr
)
4543 DEBUG("%p: setting primary MAC address", (void *)dev
);
4544 mlx4_mac_addr_remove(dev
, 0);
4545 mlx4_mac_addr_add(dev
, mac_addr
, 0, 0);
4549 * DPDK callback to enable promiscuous mode.
4552 * Pointer to Ethernet device structure.
4555 mlx4_promiscuous_enable(struct rte_eth_dev
*dev
)
4557 struct priv
*priv
= dev
->data
->dev_private
;
4561 if (mlx4_is_secondary())
4564 if (priv
->promisc
) {
4568 /* If device isn't started, this is all we need to do. */
4572 ret
= rxq_promiscuous_enable(&priv
->rxq_parent
);
4579 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4580 if ((*priv
->rxqs
)[i
] == NULL
)
4582 ret
= rxq_promiscuous_enable((*priv
->rxqs
)[i
]);
4585 /* Failure, rollback. */
4587 if ((*priv
->rxqs
)[--i
] != NULL
)
4588 rxq_promiscuous_disable((*priv
->rxqs
)[i
]);
4598 * DPDK callback to disable promiscuous mode.
4601 * Pointer to Ethernet device structure.
4604 mlx4_promiscuous_disable(struct rte_eth_dev
*dev
)
4606 struct priv
*priv
= dev
->data
->dev_private
;
4609 if (mlx4_is_secondary())
4612 if (!priv
->promisc
) {
4617 rxq_promiscuous_disable(&priv
->rxq_parent
);
4620 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
4621 if ((*priv
->rxqs
)[i
] != NULL
)
4622 rxq_promiscuous_disable((*priv
->rxqs
)[i
]);
4629 * DPDK callback to enable allmulti mode.
4632 * Pointer to Ethernet device structure.
4635 mlx4_allmulticast_enable(struct rte_eth_dev
*dev
)
4637 struct priv
*priv
= dev
->data
->dev_private
;
4641 if (mlx4_is_secondary())
4644 if (priv
->allmulti
) {
4648 /* If device isn't started, this is all we need to do. */
4652 ret
= rxq_allmulticast_enable(&priv
->rxq_parent
);
4659 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4660 if ((*priv
->rxqs
)[i
] == NULL
)
4662 ret
= rxq_allmulticast_enable((*priv
->rxqs
)[i
]);
4665 /* Failure, rollback. */
4667 if ((*priv
->rxqs
)[--i
] != NULL
)
4668 rxq_allmulticast_disable((*priv
->rxqs
)[i
]);
4678 * DPDK callback to disable allmulti mode.
4681 * Pointer to Ethernet device structure.
4684 mlx4_allmulticast_disable(struct rte_eth_dev
*dev
)
4686 struct priv
*priv
= dev
->data
->dev_private
;
4689 if (mlx4_is_secondary())
4692 if (!priv
->allmulti
) {
4697 rxq_allmulticast_disable(&priv
->rxq_parent
);
4700 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
4701 if ((*priv
->rxqs
)[i
] != NULL
)
4702 rxq_allmulticast_disable((*priv
->rxqs
)[i
]);
4709 * DPDK callback to retrieve physical link information.
4712 * Pointer to Ethernet device structure.
4713 * @param wait_to_complete
4714 * Wait for request completion (ignored).
4717 mlx4_link_update(struct rte_eth_dev
*dev
, int wait_to_complete
)
4719 const struct priv
*priv
= mlx4_get_priv(dev
);
4720 struct ethtool_cmd edata
= {
4724 struct rte_eth_link dev_link
;
4727 /* priv_lock() is not taken to allow concurrent calls. */
4731 (void)wait_to_complete
;
4732 if (priv_ifreq(priv
, SIOCGIFFLAGS
, &ifr
)) {
4733 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno
));
4736 memset(&dev_link
, 0, sizeof(dev_link
));
4737 dev_link
.link_status
= ((ifr
.ifr_flags
& IFF_UP
) &&
4738 (ifr
.ifr_flags
& IFF_RUNNING
));
4739 ifr
.ifr_data
= (void *)&edata
;
4740 if (priv_ifreq(priv
, SIOCETHTOOL
, &ifr
)) {
4741 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
4745 link_speed
= ethtool_cmd_speed(&edata
);
4746 if (link_speed
== -1)
4747 dev_link
.link_speed
= 0;
4749 dev_link
.link_speed
= link_speed
;
4750 dev_link
.link_duplex
= ((edata
.duplex
== DUPLEX_HALF
) ?
4751 ETH_LINK_HALF_DUPLEX
: ETH_LINK_FULL_DUPLEX
);
4752 dev_link
.link_autoneg
= !(dev
->data
->dev_conf
.link_speeds
&
4753 ETH_LINK_SPEED_FIXED
);
4754 if (memcmp(&dev_link
, &dev
->data
->dev_link
, sizeof(dev_link
))) {
4755 /* Link status changed. */
4756 dev
->data
->dev_link
= dev_link
;
4759 /* Link status is still the same. */
4764 mlx4_ibv_device_to_pci_addr(const struct ibv_device
*device
,
4765 struct rte_pci_addr
*pci_addr
);
4768 * DPDK callback to change the MTU.
4770 * Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
4771 * received). Use this as a hint to enable/disable scattered packets support
4772 * and improve performance when not needed.
4773 * Since failure is not an option, reconfiguring queues on the fly is not
4777 * Pointer to Ethernet device structure.
4782 * 0 on success, negative errno value on failure.
4785 mlx4_dev_set_mtu(struct rte_eth_dev
*dev
, uint16_t mtu
)
4787 struct priv
*priv
= dev
->data
->dev_private
;
4790 uint16_t (*rx_func
)(void *, struct rte_mbuf
**, uint16_t) =
4793 if (mlx4_is_secondary())
4794 return -E_RTE_SECONDARY
;
4796 /* Set kernel interface MTU first. */
4797 if (priv_set_mtu(priv
, mtu
)) {
4799 WARN("cannot set port %u MTU to %u: %s", priv
->port
, mtu
,
4803 DEBUG("adapter port %u MTU set to %u", priv
->port
, mtu
);
4805 /* Temporarily replace RX handler with a fake one, assuming it has not
4806 * been copied elsewhere. */
4807 dev
->rx_pkt_burst
= removed_rx_burst
;
4808 /* Make sure everyone has left mlx4_rx_burst() and uses
4809 * removed_rx_burst() instead. */
4812 /* Reconfigure each RX queue. */
4813 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4814 struct rxq
*rxq
= (*priv
->rxqs
)[i
];
4815 unsigned int max_frame_len
;
4819 /* Calculate new maximum frame length according to MTU. */
4820 max_frame_len
= (priv
->mtu
+ ETHER_HDR_LEN
+
4821 (ETHER_MAX_VLAN_FRAME_LEN
- ETHER_MAX_LEN
));
4822 /* Provide new values to rxq_setup(). */
4823 dev
->data
->dev_conf
.rxmode
.jumbo_frame
=
4824 (max_frame_len
> ETHER_MAX_LEN
);
4825 dev
->data
->dev_conf
.rxmode
.max_rx_pkt_len
= max_frame_len
;
4826 ret
= rxq_rehash(dev
, rxq
);
4828 /* Force SP RX if that queue requires it and abort. */
4830 rx_func
= mlx4_rx_burst_sp
;
4833 /* Reenable non-RSS queue attributes. No need to check
4834 * for errors at this stage. */
4836 rxq_mac_addrs_add(rxq
);
4838 rxq_promiscuous_enable(rxq
);
4840 rxq_allmulticast_enable(rxq
);
4842 /* Scattered burst function takes priority. */
4844 rx_func
= mlx4_rx_burst_sp
;
4846 /* Burst functions can now be called again. */
4848 dev
->rx_pkt_burst
= rx_func
;
4856 * DPDK callback to get flow control status.
4859 * Pointer to Ethernet device structure.
4860 * @param[out] fc_conf
4861 * Flow control output buffer.
4864 * 0 on success, negative errno value on failure.
4867 mlx4_dev_get_flow_ctrl(struct rte_eth_dev
*dev
, struct rte_eth_fc_conf
*fc_conf
)
4869 struct priv
*priv
= dev
->data
->dev_private
;
4871 struct ethtool_pauseparam ethpause
= {
4872 .cmd
= ETHTOOL_GPAUSEPARAM
4876 if (mlx4_is_secondary())
4877 return -E_RTE_SECONDARY
;
4878 ifr
.ifr_data
= (void *)ðpause
;
4880 if (priv_ifreq(priv
, SIOCETHTOOL
, &ifr
)) {
4882 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
4888 fc_conf
->autoneg
= ethpause
.autoneg
;
4889 if (ethpause
.rx_pause
&& ethpause
.tx_pause
)
4890 fc_conf
->mode
= RTE_FC_FULL
;
4891 else if (ethpause
.rx_pause
)
4892 fc_conf
->mode
= RTE_FC_RX_PAUSE
;
4893 else if (ethpause
.tx_pause
)
4894 fc_conf
->mode
= RTE_FC_TX_PAUSE
;
4896 fc_conf
->mode
= RTE_FC_NONE
;
4906 * DPDK callback to modify flow control parameters.
4909 * Pointer to Ethernet device structure.
4910 * @param[in] fc_conf
4911 * Flow control parameters.
4914 * 0 on success, negative errno value on failure.
4917 mlx4_dev_set_flow_ctrl(struct rte_eth_dev
*dev
, struct rte_eth_fc_conf
*fc_conf
)
4919 struct priv
*priv
= dev
->data
->dev_private
;
4921 struct ethtool_pauseparam ethpause
= {
4922 .cmd
= ETHTOOL_SPAUSEPARAM
4926 if (mlx4_is_secondary())
4927 return -E_RTE_SECONDARY
;
4928 ifr
.ifr_data
= (void *)ðpause
;
4929 ethpause
.autoneg
= fc_conf
->autoneg
;
4930 if (((fc_conf
->mode
& RTE_FC_FULL
) == RTE_FC_FULL
) ||
4931 (fc_conf
->mode
& RTE_FC_RX_PAUSE
))
4932 ethpause
.rx_pause
= 1;
4934 ethpause
.rx_pause
= 0;
4936 if (((fc_conf
->mode
& RTE_FC_FULL
) == RTE_FC_FULL
) ||
4937 (fc_conf
->mode
& RTE_FC_TX_PAUSE
))
4938 ethpause
.tx_pause
= 1;
4940 ethpause
.tx_pause
= 0;
4943 if (priv_ifreq(priv
, SIOCETHTOOL
, &ifr
)) {
4945 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
4959 * Configure a VLAN filter.
4962 * Pointer to Ethernet device structure.
4964 * VLAN ID to filter.
4969 * 0 on success, errno value on failure.
4972 vlan_filter_set(struct rte_eth_dev
*dev
, uint16_t vlan_id
, int on
)
4974 struct priv
*priv
= dev
->data
->dev_private
;
4976 unsigned int j
= -1;
4978 DEBUG("%p: %s VLAN filter ID %" PRIu16
,
4979 (void *)dev
, (on
? "enable" : "disable"), vlan_id
);
4980 for (i
= 0; (i
!= elemof(priv
->vlan_filter
)); ++i
) {
4981 if (!priv
->vlan_filter
[i
].enabled
) {
4982 /* Unused index, remember it. */
4986 if (priv
->vlan_filter
[i
].id
!= vlan_id
)
4988 /* This VLAN ID is already known, use its index. */
4992 /* Check if there's room for another VLAN filter. */
4993 if (j
== (unsigned int)-1)
4996 * VLAN filters apply to all configured MAC addresses, flow
4997 * specifications must be reconfigured accordingly.
4999 priv
->vlan_filter
[j
].id
= vlan_id
;
5000 if ((on
) && (!priv
->vlan_filter
[j
].enabled
)) {
5002 * Filter is disabled, enable it.
5003 * Rehashing flows in all RX queues is necessary.
5006 rxq_mac_addrs_del(&priv
->rxq_parent
);
5008 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
5009 if ((*priv
->rxqs
)[i
] != NULL
)
5010 rxq_mac_addrs_del((*priv
->rxqs
)[i
]);
5011 priv
->vlan_filter
[j
].enabled
= 1;
5012 if (priv
->started
) {
5014 rxq_mac_addrs_add(&priv
->rxq_parent
);
5016 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
5017 if ((*priv
->rxqs
)[i
] == NULL
)
5019 rxq_mac_addrs_add((*priv
->rxqs
)[i
]);
5022 } else if ((!on
) && (priv
->vlan_filter
[j
].enabled
)) {
5024 * Filter is enabled, disable it.
5025 * Rehashing flows in all RX queues is necessary.
5028 rxq_mac_addrs_del(&priv
->rxq_parent
);
5030 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
5031 if ((*priv
->rxqs
)[i
] != NULL
)
5032 rxq_mac_addrs_del((*priv
->rxqs
)[i
]);
5033 priv
->vlan_filter
[j
].enabled
= 0;
5034 if (priv
->started
) {
5036 rxq_mac_addrs_add(&priv
->rxq_parent
);
5038 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
5039 if ((*priv
->rxqs
)[i
] == NULL
)
5041 rxq_mac_addrs_add((*priv
->rxqs
)[i
]);
5049 * DPDK callback to configure a VLAN filter.
5052 * Pointer to Ethernet device structure.
5054 * VLAN ID to filter.
5059 * 0 on success, negative errno value on failure.
5062 mlx4_vlan_filter_set(struct rte_eth_dev
*dev
, uint16_t vlan_id
, int on
)
5064 struct priv
*priv
= dev
->data
->dev_private
;
5067 if (mlx4_is_secondary())
5068 return -E_RTE_SECONDARY
;
5070 ret
= vlan_filter_set(dev
, vlan_id
, on
);
5076 const struct rte_flow_ops mlx4_flow_ops
= {
5077 .validate
= mlx4_flow_validate
,
5078 .create
= mlx4_flow_create
,
5079 .destroy
= mlx4_flow_destroy
,
5080 .flush
= mlx4_flow_flush
,
5085 * Manage filter operations.
5088 * Pointer to Ethernet device structure.
5089 * @param filter_type
5092 * Operation to perform.
5094 * Pointer to operation-specific structure.
5097 * 0 on success, negative errno value on failure.
5100 mlx4_dev_filter_ctrl(struct rte_eth_dev
*dev
,
5101 enum rte_filter_type filter_type
,
5102 enum rte_filter_op filter_op
,
5107 switch (filter_type
) {
5108 case RTE_ETH_FILTER_GENERIC
:
5109 if (filter_op
!= RTE_ETH_FILTER_GET
)
5111 *(const void **)arg
= &mlx4_flow_ops
;
5113 case RTE_ETH_FILTER_FDIR
:
5114 DEBUG("%p: filter type FDIR is not supported by this PMD",
5118 ERROR("%p: filter type (%d) not supported",
5119 (void *)dev
, filter_type
);
5125 static const struct eth_dev_ops mlx4_dev_ops
= {
5126 .dev_configure
= mlx4_dev_configure
,
5127 .dev_start
= mlx4_dev_start
,
5128 .dev_stop
= mlx4_dev_stop
,
5129 .dev_set_link_down
= mlx4_set_link_down
,
5130 .dev_set_link_up
= mlx4_set_link_up
,
5131 .dev_close
= mlx4_dev_close
,
5132 .promiscuous_enable
= mlx4_promiscuous_enable
,
5133 .promiscuous_disable
= mlx4_promiscuous_disable
,
5134 .allmulticast_enable
= mlx4_allmulticast_enable
,
5135 .allmulticast_disable
= mlx4_allmulticast_disable
,
5136 .link_update
= mlx4_link_update
,
5137 .stats_get
= mlx4_stats_get
,
5138 .stats_reset
= mlx4_stats_reset
,
5139 .queue_stats_mapping_set
= NULL
,
5140 .dev_infos_get
= mlx4_dev_infos_get
,
5141 .dev_supported_ptypes_get
= mlx4_dev_supported_ptypes_get
,
5142 .vlan_filter_set
= mlx4_vlan_filter_set
,
5143 .vlan_tpid_set
= NULL
,
5144 .vlan_strip_queue_set
= NULL
,
5145 .vlan_offload_set
= NULL
,
5146 .rx_queue_setup
= mlx4_rx_queue_setup
,
5147 .tx_queue_setup
= mlx4_tx_queue_setup
,
5148 .rx_queue_release
= mlx4_rx_queue_release
,
5149 .tx_queue_release
= mlx4_tx_queue_release
,
5151 .dev_led_off
= NULL
,
5152 .flow_ctrl_get
= mlx4_dev_get_flow_ctrl
,
5153 .flow_ctrl_set
= mlx4_dev_set_flow_ctrl
,
5154 .priority_flow_ctrl_set
= NULL
,
5155 .mac_addr_remove
= mlx4_mac_addr_remove
,
5156 .mac_addr_add
= mlx4_mac_addr_add
,
5157 .mac_addr_set
= mlx4_mac_addr_set
,
5158 .mtu_set
= mlx4_dev_set_mtu
,
5159 .filter_ctrl
= mlx4_dev_filter_ctrl
,
5163 * Get PCI information from struct ibv_device.
5166 * Pointer to Ethernet device structure.
5167 * @param[out] pci_addr
5168 * PCI bus address output buffer.
5171 * 0 on success, -1 on failure and errno is set.
5174 mlx4_ibv_device_to_pci_addr(const struct ibv_device
*device
,
5175 struct rte_pci_addr
*pci_addr
)
5179 MKSTR(path
, "%s/device/uevent", device
->ibdev_path
);
5181 file
= fopen(path
, "rb");
5184 while (fgets(line
, sizeof(line
), file
) == line
) {
5185 size_t len
= strlen(line
);
5188 /* Truncate long lines. */
5189 if (len
== (sizeof(line
) - 1))
5190 while (line
[(len
- 1)] != '\n') {
5194 line
[(len
- 1)] = ret
;
5196 /* Extract information. */
5199 "%" SCNx16
":%" SCNx8
":%" SCNx8
".%" SCNx8
"\n",
5203 &pci_addr
->function
) == 4) {
5213 * Get MAC address by querying netdevice.
5216 * struct priv for the requested device.
5218 * MAC address output buffer.
5221 * 0 on success, -1 on failure and errno is set.
5224 priv_get_mac(struct priv
*priv
, uint8_t (*mac
)[ETHER_ADDR_LEN
])
5226 struct ifreq request
;
5228 if (priv_ifreq(priv
, SIOCGIFHWADDR
, &request
))
5230 memcpy(mac
, request
.ifr_hwaddr
.sa_data
, ETHER_ADDR_LEN
);
5234 /* Support up to 32 adapters. */
5236 struct rte_pci_addr pci_addr
; /* associated PCI address */
5237 uint32_t ports
; /* physical ports bitfield. */
5241 * Get device index in mlx4_dev[] from PCI bus address.
5243 * @param[in] pci_addr
5244 * PCI bus address to look for.
5247 * mlx4_dev[] index on success, -1 on failure.
5250 mlx4_dev_idx(struct rte_pci_addr
*pci_addr
)
5255 assert(pci_addr
!= NULL
);
5256 for (i
= 0; (i
!= elemof(mlx4_dev
)); ++i
) {
5257 if ((mlx4_dev
[i
].pci_addr
.domain
== pci_addr
->domain
) &&
5258 (mlx4_dev
[i
].pci_addr
.bus
== pci_addr
->bus
) &&
5259 (mlx4_dev
[i
].pci_addr
.devid
== pci_addr
->devid
) &&
5260 (mlx4_dev
[i
].pci_addr
.function
== pci_addr
->function
))
5262 if ((mlx4_dev
[i
].ports
== 0) && (ret
== -1))
5269 * Retrieve integer value from environment variable.
5272 * Environment variable name.
5275 * Integer value, 0 if the variable is not set.
5278 mlx4_getenv_int(const char *name
)
5280 const char *val
= getenv(name
);
5288 mlx4_dev_link_status_handler(void *);
5290 mlx4_dev_interrupt_handler(void *);
5293 * Link/device status handler.
5296 * Pointer to private structure.
5298 * Pointer to the rte_eth_dev structure.
5300 * Pointer to event flags holder.
5306 priv_dev_status_handler(struct priv
*priv
, struct rte_eth_dev
*dev
,
5309 struct ibv_async_event event
;
5310 int port_change
= 0;
5314 /* Read all message and acknowledge them. */
5316 if (ibv_get_async_event(priv
->ctx
, &event
))
5318 if ((event
.event_type
== IBV_EVENT_PORT_ACTIVE
||
5319 event
.event_type
== IBV_EVENT_PORT_ERR
) &&
5320 (priv
->intr_conf
.lsc
== 1)) {
5323 } else if (event
.event_type
== IBV_EVENT_DEVICE_FATAL
&&
5324 priv
->intr_conf
.rmv
== 1) {
5325 *events
|= (1 << RTE_ETH_EVENT_INTR_RMV
);
5328 DEBUG("event type %d on port %d not handled",
5329 event
.event_type
, event
.element
.port_num
);
5330 ibv_ack_async_event(&event
);
5333 if (port_change
^ priv
->pending_alarm
) {
5334 struct rte_eth_link
*link
= &dev
->data
->dev_link
;
5336 priv
->pending_alarm
= 0;
5337 mlx4_link_update(dev
, 0);
5338 if (((link
->link_speed
== 0) && link
->link_status
) ||
5339 ((link
->link_speed
!= 0) && !link
->link_status
)) {
5340 /* Inconsistent status, check again later. */
5341 priv
->pending_alarm
= 1;
5342 rte_eal_alarm_set(MLX4_ALARM_TIMEOUT_US
,
5343 mlx4_dev_link_status_handler
,
5346 *events
|= (1 << RTE_ETH_EVENT_INTR_LSC
);
5353 * Handle delayed link status event.
5356 * Registered argument.
5359 mlx4_dev_link_status_handler(void *arg
)
5361 struct rte_eth_dev
*dev
= arg
;
5362 struct priv
*priv
= dev
->data
->dev_private
;
5367 assert(priv
->pending_alarm
== 1);
5368 ret
= priv_dev_status_handler(priv
, dev
, &events
);
5370 if (ret
> 0 && events
& (1 << RTE_ETH_EVENT_INTR_LSC
))
5371 _rte_eth_dev_callback_process(dev
, RTE_ETH_EVENT_INTR_LSC
, NULL
);
5375 * Handle interrupts from the NIC.
5377 * @param[in] intr_handle
5378 * Interrupt handler.
5380 * Callback argument.
5383 mlx4_dev_interrupt_handler(void *cb_arg
)
5385 struct rte_eth_dev
*dev
= cb_arg
;
5386 struct priv
*priv
= dev
->data
->dev_private
;
5392 ret
= priv_dev_status_handler(priv
, dev
, &ev
);
5395 for (i
= RTE_ETH_EVENT_UNKNOWN
;
5396 i
< RTE_ETH_EVENT_MAX
;
5398 if (ev
& (1 << i
)) {
5400 _rte_eth_dev_callback_process(dev
, i
, NULL
);
5405 WARN("%d event%s not processed", ret
,
5406 (ret
> 1 ? "s were" : " was"));
5411 * Uninstall interrupt handler.
5414 * Pointer to private structure.
5416 * Pointer to the rte_eth_dev structure.
5418 * 0 on success, negative errno value on failure.
5421 priv_dev_interrupt_handler_uninstall(struct priv
*priv
, struct rte_eth_dev
*dev
)
5425 if (priv
->intr_conf
.lsc
||
5426 priv
->intr_conf
.rmv
)
5428 ret
= rte_intr_callback_unregister(&priv
->intr_handle
,
5429 mlx4_dev_interrupt_handler
,
5432 ERROR("rte_intr_callback_unregister failed with %d"
5434 (errno
? " (errno: " : ""),
5435 (errno
? strerror(errno
) : ""),
5436 (errno
? ")" : ""));
5438 priv
->intr_handle
.fd
= 0;
5439 priv
->intr_handle
.type
= RTE_INTR_HANDLE_UNKNOWN
;
5444 * Install interrupt handler.
5447 * Pointer to private structure.
5449 * Pointer to the rte_eth_dev structure.
5451 * 0 on success, negative errno value on failure.
5454 priv_dev_interrupt_handler_install(struct priv
*priv
,
5455 struct rte_eth_dev
*dev
)
5460 /* Check whether the interrupt handler has already been installed
5461 * for either type of interrupt
5463 if (priv
->intr_conf
.lsc
&&
5464 priv
->intr_conf
.rmv
&&
5465 priv
->intr_handle
.fd
)
5467 assert(priv
->ctx
->async_fd
> 0);
5468 flags
= fcntl(priv
->ctx
->async_fd
, F_GETFL
);
5469 rc
= fcntl(priv
->ctx
->async_fd
, F_SETFL
, flags
| O_NONBLOCK
);
5471 INFO("failed to change file descriptor async event queue");
5472 dev
->data
->dev_conf
.intr_conf
.lsc
= 0;
5473 dev
->data
->dev_conf
.intr_conf
.rmv
= 0;
5476 priv
->intr_handle
.fd
= priv
->ctx
->async_fd
;
5477 priv
->intr_handle
.type
= RTE_INTR_HANDLE_EXT
;
5478 rc
= rte_intr_callback_register(&priv
->intr_handle
,
5479 mlx4_dev_interrupt_handler
,
5482 ERROR("rte_intr_callback_register failed "
5483 " (errno: %s)", strerror(errno
));
5491 * Uninstall interrupt handler.
5494 * Pointer to private structure.
5496 * Pointer to the rte_eth_dev structure.
5498 * 0 on success, negative value on error.
5501 priv_dev_removal_interrupt_handler_uninstall(struct priv
*priv
,
5502 struct rte_eth_dev
*dev
)
5504 if (dev
->data
->dev_conf
.intr_conf
.rmv
) {
5505 priv
->intr_conf
.rmv
= 0;
5506 return priv_dev_interrupt_handler_uninstall(priv
, dev
);
5512 * Uninstall interrupt handler.
5515 * Pointer to private structure.
5517 * Pointer to the rte_eth_dev structure.
5519 * 0 on success, negative value on error,
5522 priv_dev_link_interrupt_handler_uninstall(struct priv
*priv
,
5523 struct rte_eth_dev
*dev
)
5527 if (dev
->data
->dev_conf
.intr_conf
.lsc
) {
5528 priv
->intr_conf
.lsc
= 0;
5529 ret
= priv_dev_interrupt_handler_uninstall(priv
, dev
);
5533 if (priv
->pending_alarm
)
5534 if (rte_eal_alarm_cancel(mlx4_dev_link_status_handler
,
5536 ERROR("rte_eal_alarm_cancel failed "
5537 " (errno: %s)", strerror(rte_errno
));
5540 priv
->pending_alarm
= 0;
5545 * Install link interrupt handler.
5548 * Pointer to private structure.
5550 * Pointer to the rte_eth_dev structure.
5552 * 0 on success, negative value on error.
5555 priv_dev_link_interrupt_handler_install(struct priv
*priv
,
5556 struct rte_eth_dev
*dev
)
5560 if (dev
->data
->dev_conf
.intr_conf
.lsc
) {
5561 ret
= priv_dev_interrupt_handler_install(priv
, dev
);
5564 priv
->intr_conf
.lsc
= 1;
5570 * Install removal interrupt handler.
5573 * Pointer to private structure.
5575 * Pointer to the rte_eth_dev structure.
5577 * 0 on success, negative value on error.
5580 priv_dev_removal_interrupt_handler_install(struct priv
*priv
,
5581 struct rte_eth_dev
*dev
)
5585 if (dev
->data
->dev_conf
.intr_conf
.rmv
) {
5586 ret
= priv_dev_interrupt_handler_install(priv
, dev
);
5589 priv
->intr_conf
.rmv
= 1;
5595 * Verify and store value for device argument.
5598 * Key argument to verify.
5600 * Value associated with key.
5605 * 0 on success, negative errno value on failure.
5608 mlx4_arg_parse(const char *key
, const char *val
, void *out
)
5610 struct mlx4_conf
*conf
= out
;
5614 tmp
= strtoul(val
, NULL
, 0);
5616 WARN("%s: \"%s\" is not a valid integer", key
, val
);
5619 if (strcmp(MLX4_PMD_PORT_KVARG
, key
) == 0) {
5620 if (tmp
>= MLX4_PMD_MAX_PHYS_PORTS
) {
5621 ERROR("invalid port index %lu (max: %u)",
5622 tmp
, MLX4_PMD_MAX_PHYS_PORTS
- 1);
5625 conf
->active_ports
|= 1 << tmp
;
5627 WARN("%s: unknown parameter", key
);
5634 * Parse device parameters.
5637 * Device arguments structure.
5640 * 0 on success, negative errno value on failure.
5643 mlx4_args(struct rte_devargs
*devargs
, struct mlx4_conf
*conf
)
5645 struct rte_kvargs
*kvlist
;
5646 unsigned int arg_count
;
5650 if (devargs
== NULL
)
5652 kvlist
= rte_kvargs_parse(devargs
->args
, pmd_mlx4_init_params
);
5653 if (kvlist
== NULL
) {
5654 ERROR("failed to parse kvargs");
5657 /* Process parameters. */
5658 for (i
= 0; pmd_mlx4_init_params
[i
]; ++i
) {
5659 arg_count
= rte_kvargs_count(kvlist
, MLX4_PMD_PORT_KVARG
);
5660 while (arg_count
-- > 0) {
5661 ret
= rte_kvargs_process(kvlist
, MLX4_PMD_PORT_KVARG
,
5662 mlx4_arg_parse
, conf
);
5668 rte_kvargs_free(kvlist
);
5672 static struct rte_pci_driver mlx4_driver
;
5675 * DPDK callback to register a PCI device.
5677 * This function creates an Ethernet device for each port of a given
5680 * @param[in] pci_drv
5681 * PCI driver structure (mlx4_driver).
5682 * @param[in] pci_dev
5683 * PCI device information.
5686 * 0 on success, negative errno value on failure.
5689 mlx4_pci_probe(struct rte_pci_driver
*pci_drv
, struct rte_pci_device
*pci_dev
)
5691 struct ibv_device
**list
;
5692 struct ibv_device
*ibv_dev
;
5694 struct ibv_context
*attr_ctx
= NULL
;
5695 struct ibv_device_attr device_attr
;
5696 struct mlx4_conf conf
= {
5704 assert(pci_drv
== &mlx4_driver
);
5705 /* Get mlx4_dev[] index. */
5706 idx
= mlx4_dev_idx(&pci_dev
->addr
);
5708 ERROR("this driver cannot support any more adapters");
5711 DEBUG("using driver device index %d", idx
);
5713 /* Save PCI address. */
5714 mlx4_dev
[idx
].pci_addr
= pci_dev
->addr
;
5715 list
= ibv_get_device_list(&i
);
5718 if (errno
== ENOSYS
)
5719 ERROR("cannot list devices, is ib_uverbs loaded?");
5724 * For each listed device, check related sysfs entry against
5725 * the provided PCI ID.
5728 struct rte_pci_addr pci_addr
;
5731 DEBUG("checking device \"%s\"", list
[i
]->name
);
5732 if (mlx4_ibv_device_to_pci_addr(list
[i
], &pci_addr
))
5734 if ((pci_dev
->addr
.domain
!= pci_addr
.domain
) ||
5735 (pci_dev
->addr
.bus
!= pci_addr
.bus
) ||
5736 (pci_dev
->addr
.devid
!= pci_addr
.devid
) ||
5737 (pci_dev
->addr
.function
!= pci_addr
.function
))
5739 vf
= (pci_dev
->id
.device_id
==
5740 PCI_DEVICE_ID_MELLANOX_CONNECTX3VF
);
5741 INFO("PCI information matches, using device \"%s\" (VF: %s)",
5742 list
[i
]->name
, (vf
? "true" : "false"));
5743 attr_ctx
= ibv_open_device(list
[i
]);
5747 if (attr_ctx
== NULL
) {
5748 ibv_free_device_list(list
);
5751 ERROR("cannot access device, is mlx4_ib loaded?");
5754 ERROR("cannot use device, are drivers up to date?");
5762 DEBUG("device opened");
5763 if (ibv_query_device(attr_ctx
, &device_attr
))
5765 INFO("%u port(s) detected", device_attr
.phys_port_cnt
);
5767 if (mlx4_args(pci_dev
->device
.devargs
, &conf
)) {
5768 ERROR("failed to process device arguments");
5771 /* Use all ports when none are defined */
5772 if (conf
.active_ports
== 0) {
5773 for (i
= 0; i
< MLX4_PMD_MAX_PHYS_PORTS
; i
++)
5774 conf
.active_ports
|= 1 << i
;
5776 for (i
= 0; i
< device_attr
.phys_port_cnt
; i
++) {
5777 uint32_t port
= i
+ 1; /* ports are indexed from one */
5778 uint32_t test
= (1 << i
);
5779 struct ibv_context
*ctx
= NULL
;
5780 struct ibv_port_attr port_attr
;
5781 struct ibv_pd
*pd
= NULL
;
5782 struct priv
*priv
= NULL
;
5783 struct rte_eth_dev
*eth_dev
= NULL
;
5784 #ifdef HAVE_EXP_QUERY_DEVICE
5785 struct ibv_exp_device_attr exp_device_attr
;
5786 #endif /* HAVE_EXP_QUERY_DEVICE */
5787 struct ether_addr mac
;
5789 /* If port is not active, skip. */
5790 if (!(conf
.active_ports
& (1 << i
)))
5792 #ifdef HAVE_EXP_QUERY_DEVICE
5793 exp_device_attr
.comp_mask
= IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS
;
5795 exp_device_attr
.comp_mask
|= IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ
;
5796 #endif /* RSS_SUPPORT */
5797 #endif /* HAVE_EXP_QUERY_DEVICE */
5799 DEBUG("using port %u (%08" PRIx32
")", port
, test
);
5801 ctx
= ibv_open_device(ibv_dev
);
5805 /* Check port status. */
5806 err
= ibv_query_port(ctx
, port
, &port_attr
);
5808 ERROR("port query failed: %s", strerror(err
));
5812 if (port_attr
.link_layer
!= IBV_LINK_LAYER_ETHERNET
) {
5813 ERROR("port %d is not configured in Ethernet mode",
5818 if (port_attr
.state
!= IBV_PORT_ACTIVE
)
5819 DEBUG("port %d is not active: \"%s\" (%d)",
5820 port
, ibv_port_state_str(port_attr
.state
),
5823 /* Allocate protection domain. */
5824 pd
= ibv_alloc_pd(ctx
);
5826 ERROR("PD allocation failure");
5831 mlx4_dev
[idx
].ports
|= test
;
5833 /* from rte_ethdev.c */
5834 priv
= rte_zmalloc("ethdev private structure",
5836 RTE_CACHE_LINE_SIZE
);
5838 ERROR("priv allocation failure");
5844 priv
->device_attr
= device_attr
;
5847 priv
->mtu
= ETHER_MTU
;
5848 #ifdef HAVE_EXP_QUERY_DEVICE
5849 if (ibv_exp_query_device(ctx
, &exp_device_attr
)) {
5850 ERROR("ibv_exp_query_device() failed");
5854 if ((exp_device_attr
.exp_device_cap_flags
&
5855 IBV_EXP_DEVICE_QPG
) &&
5856 (exp_device_attr
.exp_device_cap_flags
&
5857 IBV_EXP_DEVICE_UD_RSS
) &&
5858 (exp_device_attr
.comp_mask
&
5859 IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ
) &&
5860 (exp_device_attr
.max_rss_tbl_sz
> 0)) {
5863 priv
->max_rss_tbl_sz
= exp_device_attr
.max_rss_tbl_sz
;
5867 priv
->max_rss_tbl_sz
= 0;
5869 priv
->hw_tss
= !!(exp_device_attr
.exp_device_cap_flags
&
5870 IBV_EXP_DEVICE_UD_TSS
);
5871 DEBUG("device flags: %s%s%s",
5872 (priv
->hw_qpg
? "IBV_DEVICE_QPG " : ""),
5873 (priv
->hw_tss
? "IBV_DEVICE_TSS " : ""),
5874 (priv
->hw_rss
? "IBV_DEVICE_RSS " : ""));
5876 DEBUG("maximum RSS indirection table size: %u",
5877 exp_device_attr
.max_rss_tbl_sz
);
5878 #endif /* RSS_SUPPORT */
5881 ((exp_device_attr
.exp_device_cap_flags
&
5882 IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT
) &&
5883 (exp_device_attr
.exp_device_cap_flags
&
5884 IBV_EXP_DEVICE_RX_CSUM_IP_PKT
));
5885 DEBUG("checksum offloading is %ssupported",
5886 (priv
->hw_csum
? "" : "not "));
5888 priv
->hw_csum_l2tun
= !!(exp_device_attr
.exp_device_cap_flags
&
5889 IBV_EXP_DEVICE_VXLAN_SUPPORT
);
5890 DEBUG("L2 tunnel checksum offloads are %ssupported",
5891 (priv
->hw_csum_l2tun
? "" : "not "));
5894 priv
->inl_recv_size
= mlx4_getenv_int("MLX4_INLINE_RECV_SIZE");
5896 if (priv
->inl_recv_size
) {
5897 exp_device_attr
.comp_mask
=
5898 IBV_EXP_DEVICE_ATTR_INLINE_RECV_SZ
;
5899 if (ibv_exp_query_device(ctx
, &exp_device_attr
)) {
5900 INFO("Couldn't query device for inline-receive"
5902 priv
->inl_recv_size
= 0;
5904 if ((unsigned)exp_device_attr
.inline_recv_sz
<
5905 priv
->inl_recv_size
) {
5906 INFO("Max inline-receive (%d) <"
5907 " requested inline-receive (%u)",
5908 exp_device_attr
.inline_recv_sz
,
5909 priv
->inl_recv_size
);
5910 priv
->inl_recv_size
=
5911 exp_device_attr
.inline_recv_sz
;
5914 INFO("Set inline receive size to %u",
5915 priv
->inl_recv_size
);
5917 #endif /* INLINE_RECV */
5918 #endif /* HAVE_EXP_QUERY_DEVICE */
5920 (void)mlx4_getenv_int
;
5922 /* Configure the first MAC address by default. */
5923 if (priv_get_mac(priv
, &mac
.addr_bytes
)) {
5924 ERROR("cannot get MAC address, is mlx4_en loaded?"
5925 " (errno: %s)", strerror(errno
));
5928 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
5930 mac
.addr_bytes
[0], mac
.addr_bytes
[1],
5931 mac
.addr_bytes
[2], mac
.addr_bytes
[3],
5932 mac
.addr_bytes
[4], mac
.addr_bytes
[5]);
5933 /* Register MAC and broadcast addresses. */
5934 claim_zero(priv_mac_addr_add(priv
, 0,
5935 (const uint8_t (*)[ETHER_ADDR_LEN
])
5937 claim_zero(priv_mac_addr_add(priv
, (elemof(priv
->mac
) - 1),
5938 &(const uint8_t [ETHER_ADDR_LEN
])
5939 { "\xff\xff\xff\xff\xff\xff" }));
5942 char ifname
[IF_NAMESIZE
];
5944 if (priv_get_ifname(priv
, &ifname
) == 0)
5945 DEBUG("port %u ifname is \"%s\"",
5946 priv
->port
, ifname
);
5948 DEBUG("port %u ifname is unknown", priv
->port
);
5951 /* Get actual MTU if possible. */
5952 priv_get_mtu(priv
, &priv
->mtu
);
5953 DEBUG("port %u MTU is %u", priv
->port
, priv
->mtu
);
5955 /* from rte_ethdev.c */
5957 char name
[RTE_ETH_NAME_MAX_LEN
];
5959 snprintf(name
, sizeof(name
), "%s port %u",
5960 ibv_get_device_name(ibv_dev
), port
);
5961 eth_dev
= rte_eth_dev_allocate(name
);
5963 if (eth_dev
== NULL
) {
5964 ERROR("can not allocate rte ethdev");
5969 /* Secondary processes have to use local storage for their
5970 * private data as well as a copy of eth_dev->data, but this
5971 * pointer must not be modified before burst functions are
5972 * actually called. */
5973 if (mlx4_is_secondary()) {
5974 struct mlx4_secondary_data
*sd
=
5975 &mlx4_secondary_data
[eth_dev
->data
->port_id
];
5977 sd
->primary_priv
= eth_dev
->data
->dev_private
;
5978 if (sd
->primary_priv
== NULL
) {
5979 ERROR("no private data for port %u",
5980 eth_dev
->data
->port_id
);
5984 sd
->shared_dev_data
= eth_dev
->data
;
5985 rte_spinlock_init(&sd
->lock
);
5986 memcpy(sd
->data
.name
, sd
->shared_dev_data
->name
,
5987 sizeof(sd
->data
.name
));
5988 sd
->data
.dev_private
= priv
;
5989 sd
->data
.rx_mbuf_alloc_failed
= 0;
5990 sd
->data
.mtu
= ETHER_MTU
;
5991 sd
->data
.port_id
= sd
->shared_dev_data
->port_id
;
5992 sd
->data
.mac_addrs
= priv
->mac
;
5993 eth_dev
->tx_pkt_burst
= mlx4_tx_burst_secondary_setup
;
5994 eth_dev
->rx_pkt_burst
= mlx4_rx_burst_secondary_setup
;
5996 eth_dev
->data
->dev_private
= priv
;
5997 eth_dev
->data
->mac_addrs
= priv
->mac
;
5999 eth_dev
->device
= &pci_dev
->device
;
6001 rte_eth_copy_pci_info(eth_dev
, pci_dev
);
6003 eth_dev
->device
->driver
= &mlx4_driver
.driver
;
6005 priv
->dev
= eth_dev
;
6006 eth_dev
->dev_ops
= &mlx4_dev_ops
;
6008 /* Bring Ethernet device up. */
6009 DEBUG("forcing Ethernet interface up");
6010 priv_set_flags(priv
, ~IFF_UP
, IFF_UP
);
6011 /* Update link status once if waiting for LSC. */
6012 if (eth_dev
->data
->dev_flags
& RTE_ETH_DEV_INTR_LSC
)
6013 mlx4_link_update(eth_dev
, 0);
6019 claim_zero(ibv_dealloc_pd(pd
));
6021 claim_zero(ibv_close_device(ctx
));
6023 rte_eth_dev_release_port(eth_dev
);
6028 * XXX if something went wrong in the loop above, there is a resource
6029 * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
6030 * long as the dpdk does not provide a way to deallocate a ethdev and a
6031 * way to enumerate the registered ethdevs to free the previous ones.
6034 /* no port found, complain */
6035 if (!mlx4_dev
[idx
].ports
) {
6042 claim_zero(ibv_close_device(attr_ctx
));
6044 ibv_free_device_list(list
);
6049 static const struct rte_pci_id mlx4_pci_id_map
[] = {
6051 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
6052 PCI_DEVICE_ID_MELLANOX_CONNECTX3
)
6055 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
6056 PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO
)
6059 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
6060 PCI_DEVICE_ID_MELLANOX_CONNECTX3VF
)
6067 static struct rte_pci_driver mlx4_driver
= {
6069 .name
= MLX4_DRIVER_NAME
6071 .id_table
= mlx4_pci_id_map
,
6072 .probe
= mlx4_pci_probe
,
6073 .drv_flags
= RTE_PCI_DRV_INTR_LSC
|
6074 RTE_PCI_DRV_INTR_RMV
,
6078 * Driver initialization routine.
6080 RTE_INIT(rte_mlx4_pmd_init
);
6082 rte_mlx4_pmd_init(void)
6084 RTE_BUILD_BUG_ON(sizeof(wr_id_t
) != sizeof(uint64_t));
6086 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
6087 * huge pages. Calling ibv_fork_init() during init allows
6088 * applications to use fork() safely for purposes other than
6089 * using this PMD, which is not supported in forked processes.
6091 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
6093 rte_pci_register(&mlx4_driver
);
6096 RTE_PMD_EXPORT_NAME(net_mlx4
, __COUNTER__
);
6097 RTE_PMD_REGISTER_PCI_TABLE(net_mlx4
, mlx4_pci_id_map
);
6098 RTE_PMD_REGISTER_KMOD_DEP(net_mlx4
,
6099 "* ib_uverbs & mlx4_en & mlx4_core & mlx4_ib");