4 * Copyright 2012-2015 6WIND S.A.
5 * Copyright 2012 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>
62 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
64 #pragma GCC diagnostic ignored "-Wpedantic"
66 #include <infiniband/verbs.h>
68 #pragma GCC diagnostic error "-Wpedantic"
71 /* DPDK headers don't like -pedantic. */
73 #pragma GCC diagnostic ignored "-Wpedantic"
75 #include <rte_ether.h>
76 #include <rte_ethdev.h>
79 #include <rte_errno.h>
80 #include <rte_mempool.h>
81 #include <rte_prefetch.h>
82 #include <rte_malloc.h>
83 #include <rte_spinlock.h>
84 #include <rte_atomic.h>
85 #include <rte_version.h>
87 #include <rte_alarm.h>
88 #include <rte_memory.h>
90 #pragma GCC diagnostic error "-Wpedantic"
93 /* Generated configuration header. */
94 #include "mlx4_autoconf.h"
99 /* Runtime logging through RTE_LOG() is enabled when not in debugging mode.
100 * Intermediate LOG_*() macros add the required end-of-line characters. */
102 #define INFO(...) DEBUG(__VA_ARGS__)
103 #define WARN(...) DEBUG(__VA_ARGS__)
104 #define ERROR(...) DEBUG(__VA_ARGS__)
106 #define LOG__(level, m, ...) \
107 RTE_LOG(level, PMD, MLX4_DRIVER_NAME ": " m "%c", __VA_ARGS__)
108 #define LOG_(level, ...) LOG__(level, __VA_ARGS__, '\n')
109 #define INFO(...) LOG_(INFO, __VA_ARGS__)
110 #define WARN(...) LOG_(WARNING, __VA_ARGS__)
111 #define ERROR(...) LOG_(ERR, __VA_ARGS__)
114 /* Convenience macros for accessing mbuf fields. */
115 #define NEXT(m) ((m)->next)
116 #define DATA_LEN(m) ((m)->data_len)
117 #define PKT_LEN(m) ((m)->pkt_len)
118 #define DATA_OFF(m) ((m)->data_off)
119 #define SET_DATA_OFF(m, o) ((m)->data_off = (o))
120 #define NB_SEGS(m) ((m)->nb_segs)
121 #define PORT(m) ((m)->port)
123 /* Work Request ID data type (64 bit). */
132 #define WR_ID(o) (((wr_id_t *)&(o))->data)
134 /* Transpose flags. Useful to convert IBV to DPDK flags. */
135 #define TRANSPOSE(val, from, to) \
136 (((from) >= (to)) ? \
137 (((val) & (from)) / ((from) / (to))) : \
138 (((val) & (from)) * ((to) / (from))))
140 struct mlx4_rxq_stats
{
141 unsigned int idx
; /**< Mapping index. */
142 #ifdef MLX4_PMD_SOFT_COUNTERS
143 uint64_t ipackets
; /**< Total of successfully received packets. */
144 uint64_t ibytes
; /**< Total of successfully received bytes. */
146 uint64_t idropped
; /**< Total of packets dropped when RX ring full. */
147 uint64_t rx_nombuf
; /**< Total of RX mbuf allocation failures. */
150 struct mlx4_txq_stats
{
151 unsigned int idx
; /**< Mapping index. */
152 #ifdef MLX4_PMD_SOFT_COUNTERS
153 uint64_t opackets
; /**< Total of successfully sent packets. */
154 uint64_t obytes
; /**< Total of successfully sent bytes. */
156 uint64_t odropped
; /**< Total of packets not sent when TX ring full. */
159 /* RX element (scattered packets). */
161 struct ibv_recv_wr wr
; /* Work Request. */
162 struct ibv_sge sges
[MLX4_PMD_SGE_WR_N
]; /* Scatter/Gather Elements. */
163 struct rte_mbuf
*bufs
[MLX4_PMD_SGE_WR_N
]; /* SGEs buffers. */
168 struct ibv_recv_wr wr
; /* Work Request. */
169 struct ibv_sge sge
; /* Scatter/Gather Element. */
170 /* mbuf pointer is derived from WR_ID(wr.wr_id).offset. */
173 /* RX queue descriptor. */
175 struct priv
*priv
; /* Back pointer to private data. */
176 struct rte_mempool
*mp
; /* Memory Pool for allocations. */
177 struct ibv_mr
*mr
; /* Memory Region (for mp). */
178 struct ibv_cq
*cq
; /* Completion Queue. */
179 struct ibv_qp
*qp
; /* Queue Pair. */
180 struct ibv_exp_qp_burst_family
*if_qp
; /* QP burst interface. */
181 struct ibv_exp_cq_family
*if_cq
; /* CQ interface. */
183 * Each VLAN ID requires a separate flow steering rule.
185 BITFIELD_DECLARE(mac_configured
, uint32_t, MLX4_MAX_MAC_ADDRESSES
);
186 struct ibv_flow
*mac_flow
[MLX4_MAX_MAC_ADDRESSES
][MLX4_MAX_VLAN_IDS
];
187 struct ibv_flow
*promisc_flow
; /* Promiscuous flow. */
188 struct ibv_flow
*allmulti_flow
; /* Multicast flow. */
189 unsigned int port_id
; /* Port ID for incoming packets. */
190 unsigned int elts_n
; /* (*elts)[] length. */
191 unsigned int elts_head
; /* Current index in (*elts)[]. */
193 struct rxq_elt_sp (*sp
)[]; /* Scattered RX elements. */
194 struct rxq_elt (*no_sp
)[]; /* RX elements. */
196 unsigned int sp
:1; /* Use scattered RX elements. */
197 unsigned int csum
:1; /* Enable checksum offloading. */
198 unsigned int csum_l2tun
:1; /* Same for L2 tunnels. */
199 struct mlx4_rxq_stats stats
; /* RX queue counters. */
200 unsigned int socket
; /* CPU socket ID for allocations. */
201 struct ibv_exp_res_domain
*rd
; /* Resource Domain. */
206 struct rte_mbuf
*buf
;
209 /* Linear buffer type. It is used when transmitting buffers with too many
210 * segments that do not fit the hardware queue (see max_send_sge).
211 * Extra segments are copied (linearized) in such buffers, replacing the
212 * last SGE during TX.
213 * The size is arbitrary but large enough to hold a jumbo frame with
214 * 8 segments considering mbuf.buf_len is about 2048 bytes. */
215 typedef uint8_t linear_t
[16384];
217 /* TX queue descriptor. */
219 struct priv
*priv
; /* Back pointer to private data. */
221 const struct rte_mempool
*mp
; /* Cached Memory Pool. */
222 struct ibv_mr
*mr
; /* Memory Region (for mp). */
223 uint32_t lkey
; /* mr->lkey */
224 } mp2mr
[MLX4_PMD_TX_MP_CACHE
]; /* MP to MR translation table. */
225 struct ibv_cq
*cq
; /* Completion Queue. */
226 struct ibv_qp
*qp
; /* Queue Pair. */
227 struct ibv_exp_qp_burst_family
*if_qp
; /* QP burst interface. */
228 struct ibv_exp_cq_family
*if_cq
; /* CQ interface. */
229 #if MLX4_PMD_MAX_INLINE > 0
230 uint32_t max_inline
; /* Max inline send size <= MLX4_PMD_MAX_INLINE. */
232 unsigned int elts_n
; /* (*elts)[] length. */
233 struct txq_elt (*elts
)[]; /* TX elements. */
234 unsigned int elts_head
; /* Current index in (*elts)[]. */
235 unsigned int elts_tail
; /* First element awaiting completion. */
236 unsigned int elts_comp
; /* Number of completion requests. */
237 unsigned int elts_comp_cd
; /* Countdown for next completion request. */
238 unsigned int elts_comp_cd_init
; /* Initial value for countdown. */
239 struct mlx4_txq_stats stats
; /* TX queue counters. */
240 linear_t (*elts_linear
)[]; /* Linearized buffers. */
241 struct ibv_mr
*mr_linear
; /* Memory Region for linearized buffers. */
242 unsigned int socket
; /* CPU socket ID for allocations. */
243 struct ibv_exp_res_domain
*rd
; /* Resource Domain. */
247 struct rte_eth_dev
*dev
; /* Ethernet device. */
248 struct ibv_context
*ctx
; /* Verbs context. */
249 struct ibv_device_attr device_attr
; /* Device properties. */
250 struct ibv_pd
*pd
; /* Protection Domain. */
252 * MAC addresses array and configuration bit-field.
253 * An extra entry that cannot be modified by the DPDK is reserved
254 * for broadcast frames (destination MAC address ff:ff:ff:ff:ff:ff).
256 struct ether_addr mac
[MLX4_MAX_MAC_ADDRESSES
];
257 BITFIELD_DECLARE(mac_configured
, uint32_t, MLX4_MAX_MAC_ADDRESSES
);
260 unsigned int enabled
:1; /* If enabled. */
261 unsigned int id
:12; /* VLAN ID (0-4095). */
262 } vlan_filter
[MLX4_MAX_VLAN_IDS
]; /* VLAN filters table. */
263 /* Device properties. */
264 uint16_t mtu
; /* Configured MTU. */
265 uint8_t port
; /* Physical port number. */
266 unsigned int started
:1; /* Device started, flows enabled. */
267 unsigned int promisc
:1; /* Device in promiscuous mode. */
268 unsigned int allmulti
:1; /* Device receives all multicast packets. */
269 unsigned int hw_qpg
:1; /* QP groups are supported. */
270 unsigned int hw_tss
:1; /* TSS is supported. */
271 unsigned int hw_rss
:1; /* RSS is supported. */
272 unsigned int hw_csum
:1; /* Checksum offload is supported. */
273 unsigned int hw_csum_l2tun
:1; /* Same for L2 tunnels. */
274 unsigned int rss
:1; /* RSS is enabled. */
275 unsigned int vf
:1; /* This is a VF device. */
276 unsigned int pending_alarm
:1; /* An alarm is pending. */
278 unsigned int inl_recv_size
; /* Inline recv size */
280 unsigned int max_rss_tbl_sz
; /* Maximum number of RSS queues. */
282 struct rxq rxq_parent
; /* Parent queue when RSS is enabled. */
283 unsigned int rxqs_n
; /* RX queues array size. */
284 unsigned int txqs_n
; /* TX queues array size. */
285 struct rxq
*(*rxqs
)[]; /* RX queues. */
286 struct txq
*(*txqs
)[]; /* TX queues. */
287 struct rte_intr_handle intr_handle
; /* Interrupt handler. */
288 rte_spinlock_t lock
; /* Lock for control functions. */
291 /* Local storage for secondary process data. */
292 struct mlx4_secondary_data
{
293 struct rte_eth_dev_data data
; /* Local device data. */
294 struct priv
*primary_priv
; /* Private structure from primary. */
295 struct rte_eth_dev_data
*shared_dev_data
; /* Shared device data. */
296 rte_spinlock_t lock
; /* Port configuration lock. */
297 } mlx4_secondary_data
[RTE_MAX_ETHPORTS
];
300 * Check if running as a secondary process.
303 * Nonzero if running as a secondary process.
306 mlx4_is_secondary(void)
308 return rte_eal_process_type() != RTE_PROC_PRIMARY
;
312 * Return private structure associated with an Ethernet device.
315 * Pointer to Ethernet device structure.
318 * Pointer to private structure.
321 mlx4_get_priv(struct rte_eth_dev
*dev
)
323 struct mlx4_secondary_data
*sd
;
325 if (!mlx4_is_secondary())
326 return dev
->data
->dev_private
;
327 sd
= &mlx4_secondary_data
[dev
->data
->port_id
];
328 return sd
->data
.dev_private
;
332 * Lock private structure to protect it from concurrent access in the
336 * Pointer to private structure.
339 priv_lock(struct priv
*priv
)
341 rte_spinlock_lock(&priv
->lock
);
345 * Unlock private structure.
348 * Pointer to private structure.
351 priv_unlock(struct priv
*priv
)
353 rte_spinlock_unlock(&priv
->lock
);
356 /* Allocate a buffer on the stack and fill it with a printf format string. */
357 #define MKSTR(name, ...) \
358 char name[snprintf(NULL, 0, __VA_ARGS__) + 1]; \
360 snprintf(name, sizeof(name), __VA_ARGS__)
363 * Get interface name from private structure.
366 * Pointer to private structure.
368 * Interface name output buffer.
371 * 0 on success, -1 on failure and errno is set.
374 priv_get_ifname(const struct priv
*priv
, char (*ifname
)[IF_NAMESIZE
])
378 unsigned int dev_type
= 0;
379 unsigned int dev_port_prev
= ~0u;
380 char match
[IF_NAMESIZE
] = "";
383 MKSTR(path
, "%s/device/net", priv
->ctx
->device
->ibdev_path
);
389 while ((dent
= readdir(dir
)) != NULL
) {
390 char *name
= dent
->d_name
;
392 unsigned int dev_port
;
395 if ((name
[0] == '.') &&
396 ((name
[1] == '\0') ||
397 ((name
[1] == '.') && (name
[2] == '\0'))))
400 MKSTR(path
, "%s/device/net/%s/%s",
401 priv
->ctx
->device
->ibdev_path
, name
,
402 (dev_type
? "dev_id" : "dev_port"));
404 file
= fopen(path
, "rb");
409 * Switch to dev_id when dev_port does not exist as
410 * is the case with Linux kernel versions < 3.15.
421 r
= fscanf(file
, (dev_type
? "%x" : "%u"), &dev_port
);
426 * Switch to dev_id when dev_port returns the same value for
427 * all ports. May happen when using a MOFED release older than
428 * 3.0 with a Linux kernel >= 3.15.
430 if (dev_port
== dev_port_prev
)
432 dev_port_prev
= dev_port
;
433 if (dev_port
== (priv
->port
- 1u))
434 snprintf(match
, sizeof(match
), "%s", name
);
437 if (match
[0] == '\0')
439 strncpy(*ifname
, match
, sizeof(*ifname
));
444 * Read from sysfs entry.
447 * Pointer to private structure.
449 * Entry name relative to sysfs path.
451 * Data output buffer.
456 * 0 on success, -1 on failure and errno is set.
459 priv_sysfs_read(const struct priv
*priv
, const char *entry
,
460 char *buf
, size_t size
)
462 char ifname
[IF_NAMESIZE
];
467 if (priv_get_ifname(priv
, &ifname
))
470 MKSTR(path
, "%s/device/net/%s/%s", priv
->ctx
->device
->ibdev_path
,
473 file
= fopen(path
, "rb");
476 ret
= fread(buf
, 1, size
, file
);
478 if (((size_t)ret
< size
) && (ferror(file
)))
488 * Write to sysfs entry.
491 * Pointer to private structure.
493 * Entry name relative to sysfs path.
500 * 0 on success, -1 on failure and errno is set.
503 priv_sysfs_write(const struct priv
*priv
, const char *entry
,
504 char *buf
, size_t size
)
506 char ifname
[IF_NAMESIZE
];
511 if (priv_get_ifname(priv
, &ifname
))
514 MKSTR(path
, "%s/device/net/%s/%s", priv
->ctx
->device
->ibdev_path
,
517 file
= fopen(path
, "wb");
520 ret
= fwrite(buf
, 1, size
, file
);
522 if (((size_t)ret
< size
) || (ferror(file
)))
532 * Get unsigned long sysfs property.
535 * Pointer to private structure.
537 * Entry name relative to sysfs path.
539 * Value output buffer.
542 * 0 on success, -1 on failure and errno is set.
545 priv_get_sysfs_ulong(struct priv
*priv
, const char *name
, unsigned long *value
)
548 unsigned long value_ret
;
551 ret
= priv_sysfs_read(priv
, name
, value_str
, (sizeof(value_str
) - 1));
553 DEBUG("cannot read %s value from sysfs: %s",
554 name
, strerror(errno
));
557 value_str
[ret
] = '\0';
559 value_ret
= strtoul(value_str
, NULL
, 0);
561 DEBUG("invalid %s value `%s': %s", name
, value_str
,
570 * Set unsigned long sysfs property.
573 * Pointer to private structure.
575 * Entry name relative to sysfs path.
580 * 0 on success, -1 on failure and errno is set.
583 priv_set_sysfs_ulong(struct priv
*priv
, const char *name
, unsigned long value
)
586 MKSTR(value_str
, "%lu", value
);
588 ret
= priv_sysfs_write(priv
, name
, value_str
, (sizeof(value_str
) - 1));
590 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
591 name
, value_str
, value
, strerror(errno
));
598 * Perform ifreq ioctl() on associated Ethernet device.
601 * Pointer to private structure.
603 * Request number to pass to ioctl().
605 * Interface request structure output buffer.
608 * 0 on success, -1 on failure and errno is set.
611 priv_ifreq(const struct priv
*priv
, int req
, struct ifreq
*ifr
)
613 int sock
= socket(PF_INET
, SOCK_DGRAM
, IPPROTO_IP
);
618 if (priv_get_ifname(priv
, &ifr
->ifr_name
) == 0)
619 ret
= ioctl(sock
, req
, ifr
);
628 * Pointer to private structure.
630 * MTU value output buffer.
633 * 0 on success, -1 on failure and errno is set.
636 priv_get_mtu(struct priv
*priv
, uint16_t *mtu
)
638 unsigned long ulong_mtu
;
640 if (priv_get_sysfs_ulong(priv
, "mtu", &ulong_mtu
) == -1)
650 * Pointer to private structure.
655 * 0 on success, -1 on failure and errno is set.
658 priv_set_mtu(struct priv
*priv
, uint16_t mtu
)
662 if (priv_set_sysfs_ulong(priv
, "mtu", mtu
) ||
663 priv_get_mtu(priv
, &new_mtu
))
675 * Pointer to private structure.
677 * Bitmask for flags that must remain untouched.
679 * Bitmask for flags to modify.
682 * 0 on success, -1 on failure and errno is set.
685 priv_set_flags(struct priv
*priv
, unsigned int keep
, unsigned int flags
)
689 if (priv_get_sysfs_ulong(priv
, "flags", &tmp
) == -1)
692 tmp
|= (flags
& (~keep
));
693 return priv_set_sysfs_ulong(priv
, "flags", tmp
);
696 /* Device configuration. */
699 txq_setup(struct rte_eth_dev
*dev
, struct txq
*txq
, uint16_t desc
,
700 unsigned int socket
, const struct rte_eth_txconf
*conf
);
703 txq_cleanup(struct txq
*txq
);
706 rxq_setup(struct rte_eth_dev
*dev
, struct rxq
*rxq
, uint16_t desc
,
707 unsigned int socket
, int inactive
, const struct rte_eth_rxconf
*conf
,
708 struct rte_mempool
*mp
);
711 rxq_cleanup(struct rxq
*rxq
);
714 * Ethernet device configuration.
716 * Prepare the driver for a given number of TX and RX queues.
717 * Allocate parent RSS queue when several RX queues are requested.
720 * Pointer to Ethernet device structure.
723 * 0 on success, errno value on failure.
726 dev_configure(struct rte_eth_dev
*dev
)
728 struct priv
*priv
= dev
->data
->dev_private
;
729 unsigned int rxqs_n
= dev
->data
->nb_rx_queues
;
730 unsigned int txqs_n
= dev
->data
->nb_tx_queues
;
734 priv
->rxqs
= (void *)dev
->data
->rx_queues
;
735 priv
->txqs
= (void *)dev
->data
->tx_queues
;
736 if (txqs_n
!= priv
->txqs_n
) {
737 INFO("%p: TX queues number update: %u -> %u",
738 (void *)dev
, priv
->txqs_n
, txqs_n
);
739 priv
->txqs_n
= txqs_n
;
741 if (rxqs_n
== priv
->rxqs_n
)
743 if (!rte_is_power_of_2(rxqs_n
)) {
746 n_active
= rte_align32pow2(rxqs_n
+ 1) >> 1;
747 WARN("%p: number of RX queues must be a power"
748 " of 2: %u queues among %u will be active",
749 (void *)dev
, n_active
, rxqs_n
);
752 INFO("%p: RX queues number update: %u -> %u",
753 (void *)dev
, priv
->rxqs_n
, rxqs_n
);
754 /* If RSS is enabled, disable it first. */
758 /* Only if there are no remaining child RX queues. */
759 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
760 if ((*priv
->rxqs
)[i
] != NULL
)
762 rxq_cleanup(&priv
->rxq_parent
);
767 /* Nothing else to do. */
768 priv
->rxqs_n
= rxqs_n
;
771 /* Allocate a new RSS parent queue if supported by hardware. */
773 ERROR("%p: only a single RX queue can be configured when"
774 " hardware doesn't support RSS",
778 /* Fail if hardware doesn't support that many RSS queues. */
779 if (rxqs_n
>= priv
->max_rss_tbl_sz
) {
780 ERROR("%p: only %u RX queues can be configured for RSS",
781 (void *)dev
, priv
->max_rss_tbl_sz
);
786 priv
->rxqs_n
= rxqs_n
;
787 ret
= rxq_setup(dev
, &priv
->rxq_parent
, 0, 0, 0, NULL
, NULL
);
790 /* Failure, rollback. */
798 * DPDK callback for Ethernet device configuration.
801 * Pointer to Ethernet device structure.
804 * 0 on success, negative errno value on failure.
807 mlx4_dev_configure(struct rte_eth_dev
*dev
)
809 struct priv
*priv
= dev
->data
->dev_private
;
812 if (mlx4_is_secondary())
813 return -E_RTE_SECONDARY
;
815 ret
= dev_configure(dev
);
821 static uint16_t mlx4_tx_burst(void *, struct rte_mbuf
**, uint16_t);
822 static uint16_t removed_rx_burst(void *, struct rte_mbuf
**, uint16_t);
825 * Configure secondary process queues from a private data pointer (primary
826 * or secondary) and update burst callbacks. Can take place only once.
828 * All queues must have been previously created by the primary process to
829 * avoid undefined behavior.
832 * Private data pointer from either primary or secondary process.
835 * Private data pointer from secondary process, NULL in case of error.
838 mlx4_secondary_data_setup(struct priv
*priv
)
840 unsigned int port_id
= 0;
841 struct mlx4_secondary_data
*sd
;
844 unsigned int nb_tx_queues
;
845 unsigned int nb_rx_queues
;
848 /* priv must be valid at this point. */
849 assert(priv
!= NULL
);
850 /* priv->dev must also be valid but may point to local memory from
851 * another process, possibly with the same address and must not
852 * be dereferenced yet. */
853 assert(priv
->dev
!= NULL
);
854 /* Determine port ID by finding out where priv comes from. */
856 sd
= &mlx4_secondary_data
[port_id
];
857 rte_spinlock_lock(&sd
->lock
);
858 /* Primary process? */
859 if (sd
->primary_priv
== priv
)
861 /* Secondary process? */
862 if (sd
->data
.dev_private
== priv
)
864 rte_spinlock_unlock(&sd
->lock
);
865 if (++port_id
== RTE_DIM(mlx4_secondary_data
))
868 /* Switch to secondary private structure. If private data has already
869 * been updated by another thread, there is nothing else to do. */
870 priv
= sd
->data
.dev_private
;
871 if (priv
->dev
->data
== &sd
->data
)
873 /* Sanity checks. Secondary private structure is supposed to point
874 * to local eth_dev, itself still pointing to the shared device data
875 * structure allocated by the primary process. */
876 assert(sd
->shared_dev_data
!= &sd
->data
);
877 assert(sd
->data
.nb_tx_queues
== 0);
878 assert(sd
->data
.tx_queues
== NULL
);
879 assert(sd
->data
.nb_rx_queues
== 0);
880 assert(sd
->data
.rx_queues
== NULL
);
881 assert(priv
!= sd
->primary_priv
);
882 assert(priv
->dev
->data
== sd
->shared_dev_data
);
883 assert(priv
->txqs_n
== 0);
884 assert(priv
->txqs
== NULL
);
885 assert(priv
->rxqs_n
== 0);
886 assert(priv
->rxqs
== NULL
);
887 nb_tx_queues
= sd
->shared_dev_data
->nb_tx_queues
;
888 nb_rx_queues
= sd
->shared_dev_data
->nb_rx_queues
;
889 /* Allocate local storage for queues. */
890 tx_queues
= rte_zmalloc("secondary ethdev->tx_queues",
891 sizeof(sd
->data
.tx_queues
[0]) * nb_tx_queues
,
892 RTE_CACHE_LINE_SIZE
);
893 rx_queues
= rte_zmalloc("secondary ethdev->rx_queues",
894 sizeof(sd
->data
.rx_queues
[0]) * nb_rx_queues
,
895 RTE_CACHE_LINE_SIZE
);
896 if (tx_queues
== NULL
|| rx_queues
== NULL
)
898 /* Lock to prevent control operations during setup. */
901 for (i
= 0; i
!= nb_tx_queues
; ++i
) {
902 struct txq
*primary_txq
= (*sd
->primary_priv
->txqs
)[i
];
905 if (primary_txq
== NULL
)
907 txq
= rte_calloc_socket("TXQ", 1, sizeof(*txq
), 0,
908 primary_txq
->socket
);
910 if (txq_setup(priv
->dev
,
912 primary_txq
->elts_n
* MLX4_PMD_SGE_WR_N
,
915 txq
->stats
.idx
= primary_txq
->stats
.idx
;
922 txq
= tx_queues
[--i
];
929 for (i
= 0; i
!= nb_rx_queues
; ++i
) {
930 struct rxq
*primary_rxq
= (*sd
->primary_priv
->rxqs
)[i
];
932 if (primary_rxq
== NULL
)
934 /* Not supported yet. */
937 /* Update everything. */
938 priv
->txqs
= (void *)tx_queues
;
939 priv
->txqs_n
= nb_tx_queues
;
940 priv
->rxqs
= (void *)rx_queues
;
941 priv
->rxqs_n
= nb_rx_queues
;
942 sd
->data
.rx_queues
= rx_queues
;
943 sd
->data
.tx_queues
= tx_queues
;
944 sd
->data
.nb_rx_queues
= nb_rx_queues
;
945 sd
->data
.nb_tx_queues
= nb_tx_queues
;
946 sd
->data
.dev_link
= sd
->shared_dev_data
->dev_link
;
947 sd
->data
.mtu
= sd
->shared_dev_data
->mtu
;
948 memcpy(sd
->data
.rx_queue_state
, sd
->shared_dev_data
->rx_queue_state
,
949 sizeof(sd
->data
.rx_queue_state
));
950 memcpy(sd
->data
.tx_queue_state
, sd
->shared_dev_data
->tx_queue_state
,
951 sizeof(sd
->data
.tx_queue_state
));
952 sd
->data
.dev_flags
= sd
->shared_dev_data
->dev_flags
;
953 /* Use local data from now on. */
955 priv
->dev
->data
= &sd
->data
;
957 priv
->dev
->tx_pkt_burst
= mlx4_tx_burst
;
958 priv
->dev
->rx_pkt_burst
= removed_rx_burst
;
961 /* More sanity checks. */
962 assert(priv
->dev
->tx_pkt_burst
== mlx4_tx_burst
);
963 assert(priv
->dev
->rx_pkt_burst
== removed_rx_burst
);
964 assert(priv
->dev
->data
== &sd
->data
);
965 rte_spinlock_unlock(&sd
->lock
);
971 rte_spinlock_unlock(&sd
->lock
);
975 /* TX queues handling. */
978 * Allocate TX queue elements.
981 * Pointer to TX queue structure.
983 * Number of elements to allocate.
986 * 0 on success, errno value on failure.
989 txq_alloc_elts(struct txq
*txq
, unsigned int elts_n
)
992 struct txq_elt (*elts
)[elts_n
] =
993 rte_calloc_socket("TXQ", 1, sizeof(*elts
), 0, txq
->socket
);
994 linear_t (*elts_linear
)[elts_n
] =
995 rte_calloc_socket("TXQ", 1, sizeof(*elts_linear
), 0,
997 struct ibv_mr
*mr_linear
= NULL
;
1000 if ((elts
== NULL
) || (elts_linear
== NULL
)) {
1001 ERROR("%p: can't allocate packets array", (void *)txq
);
1006 ibv_reg_mr(txq
->priv
->pd
, elts_linear
, sizeof(*elts_linear
),
1007 IBV_ACCESS_LOCAL_WRITE
);
1008 if (mr_linear
== NULL
) {
1009 ERROR("%p: unable to configure MR, ibv_reg_mr() failed",
1014 for (i
= 0; (i
!= elts_n
); ++i
) {
1015 struct txq_elt
*elt
= &(*elts
)[i
];
1019 DEBUG("%p: allocated and configured %u WRs", (void *)txq
, elts_n
);
1020 txq
->elts_n
= elts_n
;
1025 /* Request send completion every MLX4_PMD_TX_PER_COMP_REQ packets or
1026 * at least 4 times per ring. */
1027 txq
->elts_comp_cd_init
=
1028 ((MLX4_PMD_TX_PER_COMP_REQ
< (elts_n
/ 4)) ?
1029 MLX4_PMD_TX_PER_COMP_REQ
: (elts_n
/ 4));
1030 txq
->elts_comp_cd
= txq
->elts_comp_cd_init
;
1031 txq
->elts_linear
= elts_linear
;
1032 txq
->mr_linear
= mr_linear
;
1036 if (mr_linear
!= NULL
)
1037 claim_zero(ibv_dereg_mr(mr_linear
));
1039 rte_free(elts_linear
);
1042 DEBUG("%p: failed, freed everything", (void *)txq
);
1048 * Free TX queue elements.
1051 * Pointer to TX queue structure.
1054 txq_free_elts(struct txq
*txq
)
1056 unsigned int elts_n
= txq
->elts_n
;
1057 unsigned int elts_head
= txq
->elts_head
;
1058 unsigned int elts_tail
= txq
->elts_tail
;
1059 struct txq_elt (*elts
)[elts_n
] = txq
->elts
;
1060 linear_t (*elts_linear
)[elts_n
] = txq
->elts_linear
;
1061 struct ibv_mr
*mr_linear
= txq
->mr_linear
;
1063 DEBUG("%p: freeing WRs", (void *)txq
);
1068 txq
->elts_comp_cd
= 0;
1069 txq
->elts_comp_cd_init
= 0;
1071 txq
->elts_linear
= NULL
;
1072 txq
->mr_linear
= NULL
;
1073 if (mr_linear
!= NULL
)
1074 claim_zero(ibv_dereg_mr(mr_linear
));
1076 rte_free(elts_linear
);
1079 while (elts_tail
!= elts_head
) {
1080 struct txq_elt
*elt
= &(*elts
)[elts_tail
];
1082 assert(elt
->buf
!= NULL
);
1083 rte_pktmbuf_free(elt
->buf
);
1086 memset(elt
, 0x77, sizeof(*elt
));
1088 if (++elts_tail
== elts_n
)
1096 * Clean up a TX queue.
1098 * Destroy objects, free allocated memory and reset the structure for reuse.
1101 * Pointer to TX queue structure.
1104 txq_cleanup(struct txq
*txq
)
1106 struct ibv_exp_release_intf_params params
;
1109 DEBUG("cleaning up %p", (void *)txq
);
1111 if (txq
->if_qp
!= NULL
) {
1112 assert(txq
->priv
!= NULL
);
1113 assert(txq
->priv
->ctx
!= NULL
);
1114 assert(txq
->qp
!= NULL
);
1115 params
= (struct ibv_exp_release_intf_params
){
1118 claim_zero(ibv_exp_release_intf(txq
->priv
->ctx
,
1122 if (txq
->if_cq
!= NULL
) {
1123 assert(txq
->priv
!= NULL
);
1124 assert(txq
->priv
->ctx
!= NULL
);
1125 assert(txq
->cq
!= NULL
);
1126 params
= (struct ibv_exp_release_intf_params
){
1129 claim_zero(ibv_exp_release_intf(txq
->priv
->ctx
,
1133 if (txq
->qp
!= NULL
)
1134 claim_zero(ibv_destroy_qp(txq
->qp
));
1135 if (txq
->cq
!= NULL
)
1136 claim_zero(ibv_destroy_cq(txq
->cq
));
1137 if (txq
->rd
!= NULL
) {
1138 struct ibv_exp_destroy_res_domain_attr attr
= {
1142 assert(txq
->priv
!= NULL
);
1143 assert(txq
->priv
->ctx
!= NULL
);
1144 claim_zero(ibv_exp_destroy_res_domain(txq
->priv
->ctx
,
1148 for (i
= 0; (i
!= elemof(txq
->mp2mr
)); ++i
) {
1149 if (txq
->mp2mr
[i
].mp
== NULL
)
1151 assert(txq
->mp2mr
[i
].mr
!= NULL
);
1152 claim_zero(ibv_dereg_mr(txq
->mp2mr
[i
].mr
));
1154 memset(txq
, 0, sizeof(*txq
));
1158 * Manage TX completions.
1160 * When sending a burst, mlx4_tx_burst() posts several WRs.
1161 * To improve performance, a completion event is only required once every
1162 * MLX4_PMD_TX_PER_COMP_REQ sends. Doing so discards completion information
1163 * for other WRs, but this information would not be used anyway.
1166 * Pointer to TX queue structure.
1169 * 0 on success, -1 on failure.
1172 txq_complete(struct txq
*txq
)
1174 unsigned int elts_comp
= txq
->elts_comp
;
1175 unsigned int elts_tail
= txq
->elts_tail
;
1176 const unsigned int elts_n
= txq
->elts_n
;
1179 if (unlikely(elts_comp
== 0))
1182 DEBUG("%p: processing %u work requests completions",
1183 (void *)txq
, elts_comp
);
1185 wcs_n
= txq
->if_cq
->poll_cnt(txq
->cq
, elts_comp
);
1186 if (unlikely(wcs_n
== 0))
1188 if (unlikely(wcs_n
< 0)) {
1189 DEBUG("%p: ibv_poll_cq() failed (wcs_n=%d)",
1190 (void *)txq
, wcs_n
);
1194 assert(elts_comp
<= txq
->elts_comp
);
1196 * Assume WC status is successful as nothing can be done about it
1199 elts_tail
+= wcs_n
* txq
->elts_comp_cd_init
;
1200 if (elts_tail
>= elts_n
)
1201 elts_tail
-= elts_n
;
1202 txq
->elts_tail
= elts_tail
;
1203 txq
->elts_comp
= elts_comp
;
1207 struct mlx4_check_mempool_data
{
1213 /* Called by mlx4_check_mempool() when iterating the memory chunks. */
1214 static void mlx4_check_mempool_cb(struct rte_mempool
*mp
,
1215 void *opaque
, struct rte_mempool_memhdr
*memhdr
,
1218 struct mlx4_check_mempool_data
*data
= opaque
;
1223 /* It already failed, skip the next chunks. */
1226 /* It is the first chunk. */
1227 if (data
->start
== NULL
&& data
->end
== NULL
) {
1228 data
->start
= memhdr
->addr
;
1229 data
->end
= data
->start
+ memhdr
->len
;
1232 if (data
->end
== memhdr
->addr
) {
1233 data
->end
+= memhdr
->len
;
1236 if (data
->start
== (char *)memhdr
->addr
+ memhdr
->len
) {
1237 data
->start
-= memhdr
->len
;
1240 /* Error, mempool is not virtually contigous. */
1245 * Check if a mempool can be used: it must be virtually contiguous.
1248 * Pointer to memory pool.
1250 * Pointer to the start address of the mempool virtual memory area
1252 * Pointer to the end address of the mempool virtual memory area
1255 * 0 on success (mempool is virtually contiguous), -1 on error.
1257 static int mlx4_check_mempool(struct rte_mempool
*mp
, uintptr_t *start
,
1260 struct mlx4_check_mempool_data data
;
1262 memset(&data
, 0, sizeof(data
));
1263 rte_mempool_mem_iter(mp
, mlx4_check_mempool_cb
, &data
);
1264 *start
= (uintptr_t)data
.start
;
1265 *end
= (uintptr_t)data
.end
;
1270 /* For best performance, this function should not be inlined. */
1271 static struct ibv_mr
*mlx4_mp2mr(struct ibv_pd
*, struct rte_mempool
*)
1272 __attribute__((noinline
));
1275 * Register mempool as a memory region.
1278 * Pointer to protection domain.
1280 * Pointer to memory pool.
1283 * Memory region pointer, NULL in case of error.
1285 static struct ibv_mr
*
1286 mlx4_mp2mr(struct ibv_pd
*pd
, struct rte_mempool
*mp
)
1288 const struct rte_memseg
*ms
= rte_eal_get_physmem_layout();
1293 if (mlx4_check_mempool(mp
, &start
, &end
) != 0) {
1294 ERROR("mempool %p: not virtually contiguous",
1299 DEBUG("mempool %p area start=%p end=%p size=%zu",
1300 (void *)mp
, (void *)start
, (void *)end
,
1301 (size_t)(end
- start
));
1302 /* Round start and end to page boundary if found in memory segments. */
1303 for (i
= 0; (i
< RTE_MAX_MEMSEG
) && (ms
[i
].addr
!= NULL
); ++i
) {
1304 uintptr_t addr
= (uintptr_t)ms
[i
].addr
;
1305 size_t len
= ms
[i
].len
;
1306 unsigned int align
= ms
[i
].hugepage_sz
;
1308 if ((start
> addr
) && (start
< addr
+ len
))
1309 start
= RTE_ALIGN_FLOOR(start
, align
);
1310 if ((end
> addr
) && (end
< addr
+ len
))
1311 end
= RTE_ALIGN_CEIL(end
, align
);
1313 DEBUG("mempool %p using start=%p end=%p size=%zu for MR",
1314 (void *)mp
, (void *)start
, (void *)end
,
1315 (size_t)(end
- start
));
1316 return ibv_reg_mr(pd
,
1319 IBV_ACCESS_LOCAL_WRITE
);
1323 * Get Memory Pool (MP) from mbuf. If mbuf is indirect, the pool from which
1324 * the cloned mbuf is allocated is returned instead.
1330 * Memory pool where data is located for given mbuf.
1332 static struct rte_mempool
*
1333 txq_mb2mp(struct rte_mbuf
*buf
)
1335 if (unlikely(RTE_MBUF_INDIRECT(buf
)))
1336 return rte_mbuf_from_indirect(buf
)->pool
;
1341 * Get Memory Region (MR) <-> Memory Pool (MP) association from txq->mp2mr[].
1342 * Add MP to txq->mp2mr[] if it's not registered yet. If mp2mr[] is full,
1343 * remove an entry first.
1346 * Pointer to TX queue structure.
1348 * Memory Pool for which a Memory Region lkey must be returned.
1351 * mr->lkey on success, (uint32_t)-1 on failure.
1354 txq_mp2mr(struct txq
*txq
, struct rte_mempool
*mp
)
1359 for (i
= 0; (i
!= elemof(txq
->mp2mr
)); ++i
) {
1360 if (unlikely(txq
->mp2mr
[i
].mp
== NULL
)) {
1361 /* Unknown MP, add a new MR for it. */
1364 if (txq
->mp2mr
[i
].mp
== mp
) {
1365 assert(txq
->mp2mr
[i
].lkey
!= (uint32_t)-1);
1366 assert(txq
->mp2mr
[i
].mr
->lkey
== txq
->mp2mr
[i
].lkey
);
1367 return txq
->mp2mr
[i
].lkey
;
1370 /* Add a new entry, register MR first. */
1371 DEBUG("%p: discovered new memory pool \"%s\" (%p)",
1372 (void *)txq
, mp
->name
, (void *)mp
);
1373 mr
= mlx4_mp2mr(txq
->priv
->pd
, mp
);
1374 if (unlikely(mr
== NULL
)) {
1375 DEBUG("%p: unable to configure MR, ibv_reg_mr() failed.",
1377 return (uint32_t)-1;
1379 if (unlikely(i
== elemof(txq
->mp2mr
))) {
1380 /* Table is full, remove oldest entry. */
1381 DEBUG("%p: MR <-> MP table full, dropping oldest entry.",
1384 claim_zero(ibv_dereg_mr(txq
->mp2mr
[0].mr
));
1385 memmove(&txq
->mp2mr
[0], &txq
->mp2mr
[1],
1386 (sizeof(txq
->mp2mr
) - sizeof(txq
->mp2mr
[0])));
1388 /* Store the new entry. */
1389 txq
->mp2mr
[i
].mp
= mp
;
1390 txq
->mp2mr
[i
].mr
= mr
;
1391 txq
->mp2mr
[i
].lkey
= mr
->lkey
;
1392 DEBUG("%p: new MR lkey for MP \"%s\" (%p): 0x%08" PRIu32
,
1393 (void *)txq
, mp
->name
, (void *)mp
, txq
->mp2mr
[i
].lkey
);
1394 return txq
->mp2mr
[i
].lkey
;
1397 struct txq_mp2mr_mbuf_check_data
{
1402 * Callback function for rte_mempool_obj_iter() to check whether a given
1403 * mempool object looks like a mbuf.
1406 * The mempool pointer
1408 * Context data (struct txq_mp2mr_mbuf_check_data). Contains the
1413 * Object index, unused.
1416 txq_mp2mr_mbuf_check(struct rte_mempool
*mp
, void *arg
, void *obj
,
1417 uint32_t index __rte_unused
)
1419 struct txq_mp2mr_mbuf_check_data
*data
= arg
;
1420 struct rte_mbuf
*buf
= obj
;
1422 /* Check whether mbuf structure fits element size and whether mempool
1423 * pointer is valid. */
1424 if (sizeof(*buf
) > mp
->elt_size
|| buf
->pool
!= mp
)
1429 * Iterator function for rte_mempool_walk() to register existing mempools and
1430 * fill the MP to MR cache of a TX queue.
1433 * Memory Pool to register.
1435 * Pointer to TX queue structure.
1438 txq_mp2mr_iter(struct rte_mempool
*mp
, void *arg
)
1440 struct txq
*txq
= arg
;
1441 struct txq_mp2mr_mbuf_check_data data
= {
1445 /* Register mempool only if the first element looks like a mbuf. */
1446 if (rte_mempool_obj_iter(mp
, txq_mp2mr_mbuf_check
, &data
) == 0 ||
1452 #if MLX4_PMD_SGE_WR_N > 1
1455 * Copy scattered mbuf contents to a single linear buffer.
1457 * @param[out] linear
1458 * Linear output buffer.
1460 * Scattered input buffer.
1463 * Number of bytes copied to the output buffer or 0 if not large enough.
1466 linearize_mbuf(linear_t
*linear
, struct rte_mbuf
*buf
)
1468 unsigned int size
= 0;
1469 unsigned int offset
;
1472 unsigned int len
= DATA_LEN(buf
);
1476 if (unlikely(size
> sizeof(*linear
)))
1478 memcpy(&(*linear
)[offset
],
1479 rte_pktmbuf_mtod(buf
, uint8_t *),
1482 } while (buf
!= NULL
);
1487 * Handle scattered buffers for mlx4_tx_burst().
1490 * TX queue structure.
1492 * Number of segments in buf.
1494 * TX queue element to fill.
1496 * Buffer to process.
1498 * Index of the linear buffer to use if necessary (normally txq->elts_head).
1500 * Array filled with SGEs on success.
1503 * A structure containing the processed packet size in bytes and the
1504 * number of SGEs. Both fields are set to (unsigned int)-1 in case of
1507 static struct tx_burst_sg_ret
{
1508 unsigned int length
;
1511 tx_burst_sg(struct txq
*txq
, unsigned int segs
, struct txq_elt
*elt
,
1512 struct rte_mbuf
*buf
, unsigned int elts_head
,
1513 struct ibv_sge (*sges
)[MLX4_PMD_SGE_WR_N
])
1515 unsigned int sent_size
= 0;
1519 /* When there are too many segments, extra segments are
1520 * linearized in the last SGE. */
1521 if (unlikely(segs
> elemof(*sges
))) {
1522 segs
= (elemof(*sges
) - 1);
1525 /* Update element. */
1527 /* Register segments as SGEs. */
1528 for (j
= 0; (j
!= segs
); ++j
) {
1529 struct ibv_sge
*sge
= &(*sges
)[j
];
1532 /* Retrieve Memory Region key for this memory pool. */
1533 lkey
= txq_mp2mr(txq
, txq_mb2mp(buf
));
1534 if (unlikely(lkey
== (uint32_t)-1)) {
1535 /* MR does not exist. */
1536 DEBUG("%p: unable to get MP <-> MR association",
1538 /* Clean up TX element. */
1543 sge
->addr
= rte_pktmbuf_mtod(buf
, uintptr_t);
1545 rte_prefetch0((volatile void *)
1546 (uintptr_t)sge
->addr
);
1547 sge
->length
= DATA_LEN(buf
);
1549 sent_size
+= sge
->length
;
1552 /* If buf is not NULL here and is not going to be linearized,
1553 * nb_segs is not valid. */
1555 assert((buf
== NULL
) || (linearize
));
1556 /* Linearize extra segments. */
1558 struct ibv_sge
*sge
= &(*sges
)[segs
];
1559 linear_t
*linear
= &(*txq
->elts_linear
)[elts_head
];
1560 unsigned int size
= linearize_mbuf(linear
, buf
);
1562 assert(segs
== (elemof(*sges
) - 1));
1564 /* Invalid packet. */
1565 DEBUG("%p: packet too large to be linearized.",
1567 /* Clean up TX element. */
1571 /* If MLX4_PMD_SGE_WR_N is 1, free mbuf immediately. */
1572 if (elemof(*sges
) == 1) {
1574 struct rte_mbuf
*next
= NEXT(buf
);
1576 rte_pktmbuf_free_seg(buf
);
1578 } while (buf
!= NULL
);
1582 sge
->addr
= (uintptr_t)&(*linear
)[0];
1584 sge
->lkey
= txq
->mr_linear
->lkey
;
1586 /* Include last segment. */
1589 return (struct tx_burst_sg_ret
){
1590 .length
= sent_size
,
1594 return (struct tx_burst_sg_ret
){
1600 #endif /* MLX4_PMD_SGE_WR_N > 1 */
1603 * DPDK callback for TX.
1606 * Generic pointer to TX queue structure.
1608 * Packets to transmit.
1610 * Number of packets in array.
1613 * Number of packets successfully transmitted (<= pkts_n).
1616 mlx4_tx_burst(void *dpdk_txq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
1618 struct txq
*txq
= (struct txq
*)dpdk_txq
;
1619 unsigned int elts_head
= txq
->elts_head
;
1620 const unsigned int elts_n
= txq
->elts_n
;
1621 unsigned int elts_comp_cd
= txq
->elts_comp_cd
;
1622 unsigned int elts_comp
= 0;
1627 assert(elts_comp_cd
!= 0);
1629 max
= (elts_n
- (elts_head
- txq
->elts_tail
));
1633 assert(max
<= elts_n
);
1634 /* Always leave one free entry in the ring. */
1640 for (i
= 0; (i
!= max
); ++i
) {
1641 struct rte_mbuf
*buf
= pkts
[i
];
1642 unsigned int elts_head_next
=
1643 (((elts_head
+ 1) == elts_n
) ? 0 : elts_head
+ 1);
1644 struct txq_elt
*elt_next
= &(*txq
->elts
)[elts_head_next
];
1645 struct txq_elt
*elt
= &(*txq
->elts
)[elts_head
];
1646 unsigned int segs
= NB_SEGS(buf
);
1647 #ifdef MLX4_PMD_SOFT_COUNTERS
1648 unsigned int sent_size
= 0;
1650 uint32_t send_flags
= 0;
1652 /* Clean up old buffer. */
1653 if (likely(elt
->buf
!= NULL
)) {
1654 struct rte_mbuf
*tmp
= elt
->buf
;
1658 memset(elt
, 0x66, sizeof(*elt
));
1660 /* Faster than rte_pktmbuf_free(). */
1662 struct rte_mbuf
*next
= NEXT(tmp
);
1664 rte_pktmbuf_free_seg(tmp
);
1666 } while (tmp
!= NULL
);
1668 /* Request TX completion. */
1669 if (unlikely(--elts_comp_cd
== 0)) {
1670 elts_comp_cd
= txq
->elts_comp_cd_init
;
1672 send_flags
|= IBV_EXP_QP_BURST_SIGNALED
;
1674 /* Should we enable HW CKSUM offload */
1676 (PKT_TX_IP_CKSUM
| PKT_TX_TCP_CKSUM
| PKT_TX_UDP_CKSUM
)) {
1677 send_flags
|= IBV_EXP_QP_BURST_IP_CSUM
;
1678 /* HW does not support checksum offloads at arbitrary
1679 * offsets but automatically recognizes the packet
1680 * type. For inner L3/L4 checksums, only VXLAN (UDP)
1681 * tunnels are currently supported. */
1682 if (RTE_ETH_IS_TUNNEL_PKT(buf
->packet_type
))
1683 send_flags
|= IBV_EXP_QP_BURST_TUNNEL
;
1685 if (likely(segs
== 1)) {
1690 /* Retrieve buffer information. */
1691 addr
= rte_pktmbuf_mtod(buf
, uintptr_t);
1692 length
= DATA_LEN(buf
);
1693 /* Retrieve Memory Region key for this memory pool. */
1694 lkey
= txq_mp2mr(txq
, txq_mb2mp(buf
));
1695 if (unlikely(lkey
== (uint32_t)-1)) {
1696 /* MR does not exist. */
1697 DEBUG("%p: unable to get MP <-> MR"
1698 " association", (void *)txq
);
1699 /* Clean up TX element. */
1703 /* Update element. */
1706 rte_prefetch0((volatile void *)
1708 RTE_MBUF_PREFETCH_TO_FREE(elt_next
->buf
);
1709 /* Put packet into send queue. */
1710 #if MLX4_PMD_MAX_INLINE > 0
1711 if (length
<= txq
->max_inline
)
1712 err
= txq
->if_qp
->send_pending_inline
1719 err
= txq
->if_qp
->send_pending
1727 #ifdef MLX4_PMD_SOFT_COUNTERS
1728 sent_size
+= length
;
1731 #if MLX4_PMD_SGE_WR_N > 1
1732 struct ibv_sge sges
[MLX4_PMD_SGE_WR_N
];
1733 struct tx_burst_sg_ret ret
;
1735 ret
= tx_burst_sg(txq
, segs
, elt
, buf
, elts_head
,
1737 if (ret
.length
== (unsigned int)-1)
1739 RTE_MBUF_PREFETCH_TO_FREE(elt_next
->buf
);
1740 /* Put SG list into send queue. */
1741 err
= txq
->if_qp
->send_pending_sg_list
1748 #ifdef MLX4_PMD_SOFT_COUNTERS
1749 sent_size
+= ret
.length
;
1751 #else /* MLX4_PMD_SGE_WR_N > 1 */
1752 DEBUG("%p: TX scattered buffers support not"
1753 " compiled in", (void *)txq
);
1755 #endif /* MLX4_PMD_SGE_WR_N > 1 */
1757 elts_head
= elts_head_next
;
1758 #ifdef MLX4_PMD_SOFT_COUNTERS
1759 /* Increment sent bytes counter. */
1760 txq
->stats
.obytes
+= sent_size
;
1764 /* Take a shortcut if nothing must be sent. */
1765 if (unlikely(i
== 0))
1767 #ifdef MLX4_PMD_SOFT_COUNTERS
1768 /* Increment sent packets counter. */
1769 txq
->stats
.opackets
+= i
;
1771 /* Ring QP doorbell. */
1772 err
= txq
->if_qp
->send_flush(txq
->qp
);
1773 if (unlikely(err
)) {
1774 /* A nonzero value is not supposed to be returned.
1775 * Nothing can be done about it. */
1776 DEBUG("%p: send_flush() failed with error %d",
1779 txq
->elts_head
= elts_head
;
1780 txq
->elts_comp
+= elts_comp
;
1781 txq
->elts_comp_cd
= elts_comp_cd
;
1786 * DPDK callback for TX in secondary processes.
1788 * This function configures all queues from primary process information
1789 * if necessary before reverting to the normal TX burst callback.
1792 * Generic pointer to TX queue structure.
1794 * Packets to transmit.
1796 * Number of packets in array.
1799 * Number of packets successfully transmitted (<= pkts_n).
1802 mlx4_tx_burst_secondary_setup(void *dpdk_txq
, struct rte_mbuf
**pkts
,
1805 struct txq
*txq
= dpdk_txq
;
1806 struct priv
*priv
= mlx4_secondary_data_setup(txq
->priv
);
1807 struct priv
*primary_priv
;
1813 mlx4_secondary_data
[priv
->dev
->data
->port_id
].primary_priv
;
1814 /* Look for queue index in both private structures. */
1815 for (index
= 0; index
!= priv
->txqs_n
; ++index
)
1816 if (((*primary_priv
->txqs
)[index
] == txq
) ||
1817 ((*priv
->txqs
)[index
] == txq
))
1819 if (index
== priv
->txqs_n
)
1821 txq
= (*priv
->txqs
)[index
];
1822 return priv
->dev
->tx_pkt_burst(txq
, pkts
, pkts_n
);
1826 * Configure a TX queue.
1829 * Pointer to Ethernet device structure.
1831 * Pointer to TX queue structure.
1833 * Number of descriptors to configure in queue.
1835 * NUMA socket on which memory must be allocated.
1837 * Thresholds parameters.
1840 * 0 on success, errno value on failure.
1843 txq_setup(struct rte_eth_dev
*dev
, struct txq
*txq
, uint16_t desc
,
1844 unsigned int socket
, const struct rte_eth_txconf
*conf
)
1846 struct priv
*priv
= mlx4_get_priv(dev
);
1852 struct ibv_exp_query_intf_params params
;
1853 struct ibv_exp_qp_init_attr init
;
1854 struct ibv_exp_res_domain_init_attr rd
;
1855 struct ibv_exp_cq_init_attr cq
;
1856 struct ibv_exp_qp_attr mod
;
1858 enum ibv_exp_query_intf_status status
;
1861 (void)conf
; /* Thresholds configuration (ignored). */
1864 if ((desc
== 0) || (desc
% MLX4_PMD_SGE_WR_N
)) {
1865 ERROR("%p: invalid number of TX descriptors (must be a"
1866 " multiple of %d)", (void *)dev
, MLX4_PMD_SGE_WR_N
);
1869 desc
/= MLX4_PMD_SGE_WR_N
;
1870 /* MRs will be registered in mp2mr[] later. */
1871 attr
.rd
= (struct ibv_exp_res_domain_init_attr
){
1872 .comp_mask
= (IBV_EXP_RES_DOMAIN_THREAD_MODEL
|
1873 IBV_EXP_RES_DOMAIN_MSG_MODEL
),
1874 .thread_model
= IBV_EXP_THREAD_SINGLE
,
1875 .msg_model
= IBV_EXP_MSG_HIGH_BW
,
1877 tmpl
.rd
= ibv_exp_create_res_domain(priv
->ctx
, &attr
.rd
);
1878 if (tmpl
.rd
== NULL
) {
1880 ERROR("%p: RD creation failure: %s",
1881 (void *)dev
, strerror(ret
));
1884 attr
.cq
= (struct ibv_exp_cq_init_attr
){
1885 .comp_mask
= IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN
,
1886 .res_domain
= tmpl
.rd
,
1888 tmpl
.cq
= ibv_exp_create_cq(priv
->ctx
, desc
, NULL
, NULL
, 0, &attr
.cq
);
1889 if (tmpl
.cq
== NULL
) {
1891 ERROR("%p: CQ creation failure: %s",
1892 (void *)dev
, strerror(ret
));
1895 DEBUG("priv->device_attr.max_qp_wr is %d",
1896 priv
->device_attr
.max_qp_wr
);
1897 DEBUG("priv->device_attr.max_sge is %d",
1898 priv
->device_attr
.max_sge
);
1899 attr
.init
= (struct ibv_exp_qp_init_attr
){
1900 /* CQ to be associated with the send queue. */
1902 /* CQ to be associated with the receive queue. */
1905 /* Max number of outstanding WRs. */
1906 .max_send_wr
= ((priv
->device_attr
.max_qp_wr
< desc
) ?
1907 priv
->device_attr
.max_qp_wr
:
1909 /* Max number of scatter/gather elements in a WR. */
1910 .max_send_sge
= ((priv
->device_attr
.max_sge
<
1911 MLX4_PMD_SGE_WR_N
) ?
1912 priv
->device_attr
.max_sge
:
1914 #if MLX4_PMD_MAX_INLINE > 0
1915 .max_inline_data
= MLX4_PMD_MAX_INLINE
,
1918 .qp_type
= IBV_QPT_RAW_PACKET
,
1919 /* Do *NOT* enable this, completions events are managed per
1923 .res_domain
= tmpl
.rd
,
1924 .comp_mask
= (IBV_EXP_QP_INIT_ATTR_PD
|
1925 IBV_EXP_QP_INIT_ATTR_RES_DOMAIN
),
1927 tmpl
.qp
= ibv_exp_create_qp(priv
->ctx
, &attr
.init
);
1928 if (tmpl
.qp
== NULL
) {
1929 ret
= (errno
? errno
: EINVAL
);
1930 ERROR("%p: QP creation failure: %s",
1931 (void *)dev
, strerror(ret
));
1934 #if MLX4_PMD_MAX_INLINE > 0
1935 /* ibv_create_qp() updates this value. */
1936 tmpl
.max_inline
= attr
.init
.cap
.max_inline_data
;
1938 attr
.mod
= (struct ibv_exp_qp_attr
){
1939 /* Move the QP to this state. */
1940 .qp_state
= IBV_QPS_INIT
,
1941 /* Primary port number. */
1942 .port_num
= priv
->port
1944 ret
= ibv_exp_modify_qp(tmpl
.qp
, &attr
.mod
,
1945 (IBV_EXP_QP_STATE
| IBV_EXP_QP_PORT
));
1947 ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
1948 (void *)dev
, strerror(ret
));
1951 ret
= txq_alloc_elts(&tmpl
, desc
);
1953 ERROR("%p: TXQ allocation failed: %s",
1954 (void *)dev
, strerror(ret
));
1957 attr
.mod
= (struct ibv_exp_qp_attr
){
1958 .qp_state
= IBV_QPS_RTR
1960 ret
= ibv_exp_modify_qp(tmpl
.qp
, &attr
.mod
, IBV_EXP_QP_STATE
);
1962 ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
1963 (void *)dev
, strerror(ret
));
1966 attr
.mod
.qp_state
= IBV_QPS_RTS
;
1967 ret
= ibv_exp_modify_qp(tmpl
.qp
, &attr
.mod
, IBV_EXP_QP_STATE
);
1969 ERROR("%p: QP state to IBV_QPS_RTS failed: %s",
1970 (void *)dev
, strerror(ret
));
1973 attr
.params
= (struct ibv_exp_query_intf_params
){
1974 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
1975 .intf
= IBV_EXP_INTF_CQ
,
1978 tmpl
.if_cq
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
1979 if (tmpl
.if_cq
== NULL
) {
1980 ERROR("%p: CQ interface family query failed with status %d",
1981 (void *)dev
, status
);
1984 attr
.params
= (struct ibv_exp_query_intf_params
){
1985 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
1986 .intf
= IBV_EXP_INTF_QP_BURST
,
1988 #ifdef HAVE_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK
1989 /* MC loopback must be disabled when not using a VF. */
1992 IBV_EXP_QP_BURST_CREATE_DISABLE_ETH_LOOPBACK
:
1996 tmpl
.if_qp
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
1997 if (tmpl
.if_qp
== NULL
) {
1998 ERROR("%p: QP interface family query failed with status %d",
1999 (void *)dev
, status
);
2002 /* Clean up txq in case we're reinitializing it. */
2003 DEBUG("%p: cleaning-up old txq just in case", (void *)txq
);
2006 DEBUG("%p: txq updated with %p", (void *)txq
, (void *)&tmpl
);
2007 /* Pre-register known mempools. */
2008 rte_mempool_walk(txq_mp2mr_iter
, txq
);
2018 * DPDK callback to configure a TX queue.
2021 * Pointer to Ethernet device structure.
2025 * Number of descriptors to configure in queue.
2027 * NUMA socket on which memory must be allocated.
2029 * Thresholds parameters.
2032 * 0 on success, negative errno value on failure.
2035 mlx4_tx_queue_setup(struct rte_eth_dev
*dev
, uint16_t idx
, uint16_t desc
,
2036 unsigned int socket
, const struct rte_eth_txconf
*conf
)
2038 struct priv
*priv
= dev
->data
->dev_private
;
2039 struct txq
*txq
= (*priv
->txqs
)[idx
];
2042 if (mlx4_is_secondary())
2043 return -E_RTE_SECONDARY
;
2045 DEBUG("%p: configuring queue %u for %u descriptors",
2046 (void *)dev
, idx
, desc
);
2047 if (idx
>= priv
->txqs_n
) {
2048 ERROR("%p: queue index out of range (%u >= %u)",
2049 (void *)dev
, idx
, priv
->txqs_n
);
2054 DEBUG("%p: reusing already allocated queue index %u (%p)",
2055 (void *)dev
, idx
, (void *)txq
);
2056 if (priv
->started
) {
2060 (*priv
->txqs
)[idx
] = NULL
;
2063 txq
= rte_calloc_socket("TXQ", 1, sizeof(*txq
), 0, socket
);
2065 ERROR("%p: unable to allocate queue index %u",
2071 ret
= txq_setup(dev
, txq
, desc
, socket
, conf
);
2075 txq
->stats
.idx
= idx
;
2076 DEBUG("%p: adding TX queue %p to list",
2077 (void *)dev
, (void *)txq
);
2078 (*priv
->txqs
)[idx
] = txq
;
2079 /* Update send callback. */
2080 dev
->tx_pkt_burst
= mlx4_tx_burst
;
2087 * DPDK callback to release a TX queue.
2090 * Generic TX queue pointer.
2093 mlx4_tx_queue_release(void *dpdk_txq
)
2095 struct txq
*txq
= (struct txq
*)dpdk_txq
;
2099 if (mlx4_is_secondary())
2105 for (i
= 0; (i
!= priv
->txqs_n
); ++i
)
2106 if ((*priv
->txqs
)[i
] == txq
) {
2107 DEBUG("%p: removing TX queue %p from list",
2108 (void *)priv
->dev
, (void *)txq
);
2109 (*priv
->txqs
)[i
] = NULL
;
2117 /* RX queues handling. */
2120 * Allocate RX queue elements with scattered packets support.
2123 * Pointer to RX queue structure.
2125 * Number of elements to allocate.
2127 * If not NULL, fetch buffers from this array instead of allocating them
2128 * with rte_pktmbuf_alloc().
2131 * 0 on success, errno value on failure.
2134 rxq_alloc_elts_sp(struct rxq
*rxq
, unsigned int elts_n
,
2135 struct rte_mbuf
**pool
)
2138 struct rxq_elt_sp (*elts
)[elts_n
] =
2139 rte_calloc_socket("RXQ elements", 1, sizeof(*elts
), 0,
2144 ERROR("%p: can't allocate packets array", (void *)rxq
);
2148 /* For each WR (packet). */
2149 for (i
= 0; (i
!= elts_n
); ++i
) {
2151 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
2152 struct ibv_recv_wr
*wr
= &elt
->wr
;
2153 struct ibv_sge (*sges
)[(elemof(elt
->sges
))] = &elt
->sges
;
2155 /* These two arrays must have the same size. */
2156 assert(elemof(elt
->sges
) == elemof(elt
->bufs
));
2159 wr
->next
= &(*elts
)[(i
+ 1)].wr
;
2160 wr
->sg_list
= &(*sges
)[0];
2161 wr
->num_sge
= elemof(*sges
);
2162 /* For each SGE (segment). */
2163 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
2164 struct ibv_sge
*sge
= &(*sges
)[j
];
2165 struct rte_mbuf
*buf
;
2169 assert(buf
!= NULL
);
2170 rte_pktmbuf_reset(buf
);
2172 buf
= rte_pktmbuf_alloc(rxq
->mp
);
2174 assert(pool
== NULL
);
2175 ERROR("%p: empty mbuf pool", (void *)rxq
);
2180 /* Headroom is reserved by rte_pktmbuf_alloc(). */
2181 assert(DATA_OFF(buf
) == RTE_PKTMBUF_HEADROOM
);
2182 /* Buffer is supposed to be empty. */
2183 assert(rte_pktmbuf_data_len(buf
) == 0);
2184 assert(rte_pktmbuf_pkt_len(buf
) == 0);
2185 /* sge->addr must be able to store a pointer. */
2186 assert(sizeof(sge
->addr
) >= sizeof(uintptr_t));
2188 /* The first SGE keeps its headroom. */
2189 sge
->addr
= rte_pktmbuf_mtod(buf
, uintptr_t);
2190 sge
->length
= (buf
->buf_len
-
2191 RTE_PKTMBUF_HEADROOM
);
2193 /* Subsequent SGEs lose theirs. */
2194 assert(DATA_OFF(buf
) == RTE_PKTMBUF_HEADROOM
);
2195 SET_DATA_OFF(buf
, 0);
2196 sge
->addr
= (uintptr_t)buf
->buf_addr
;
2197 sge
->length
= buf
->buf_len
;
2199 sge
->lkey
= rxq
->mr
->lkey
;
2200 /* Redundant check for tailroom. */
2201 assert(sge
->length
== rte_pktmbuf_tailroom(buf
));
2204 /* The last WR pointer must be NULL. */
2205 (*elts
)[(i
- 1)].wr
.next
= NULL
;
2206 DEBUG("%p: allocated and configured %u WRs (%zu segments)",
2207 (void *)rxq
, elts_n
, (elts_n
* elemof((*elts
)[0].sges
)));
2208 rxq
->elts_n
= elts_n
;
2210 rxq
->elts
.sp
= elts
;
2215 assert(pool
== NULL
);
2216 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2218 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
2220 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
2221 struct rte_mbuf
*buf
= elt
->bufs
[j
];
2224 rte_pktmbuf_free_seg(buf
);
2229 DEBUG("%p: failed, freed everything", (void *)rxq
);
2235 * Free RX queue elements with scattered packets support.
2238 * Pointer to RX queue structure.
2241 rxq_free_elts_sp(struct rxq
*rxq
)
2244 unsigned int elts_n
= rxq
->elts_n
;
2245 struct rxq_elt_sp (*elts
)[elts_n
] = rxq
->elts
.sp
;
2247 DEBUG("%p: freeing WRs", (void *)rxq
);
2249 rxq
->elts
.sp
= NULL
;
2252 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2254 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
2256 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
2257 struct rte_mbuf
*buf
= elt
->bufs
[j
];
2260 rte_pktmbuf_free_seg(buf
);
2267 * Allocate RX queue elements.
2270 * Pointer to RX queue structure.
2272 * Number of elements to allocate.
2274 * If not NULL, fetch buffers from this array instead of allocating them
2275 * with rte_pktmbuf_alloc().
2278 * 0 on success, errno value on failure.
2281 rxq_alloc_elts(struct rxq
*rxq
, unsigned int elts_n
, struct rte_mbuf
**pool
)
2284 struct rxq_elt (*elts
)[elts_n
] =
2285 rte_calloc_socket("RXQ elements", 1, sizeof(*elts
), 0,
2290 ERROR("%p: can't allocate packets array", (void *)rxq
);
2294 /* For each WR (packet). */
2295 for (i
= 0; (i
!= elts_n
); ++i
) {
2296 struct rxq_elt
*elt
= &(*elts
)[i
];
2297 struct ibv_recv_wr
*wr
= &elt
->wr
;
2298 struct ibv_sge
*sge
= &(*elts
)[i
].sge
;
2299 struct rte_mbuf
*buf
;
2303 assert(buf
!= NULL
);
2304 rte_pktmbuf_reset(buf
);
2306 buf
= rte_pktmbuf_alloc(rxq
->mp
);
2308 assert(pool
== NULL
);
2309 ERROR("%p: empty mbuf pool", (void *)rxq
);
2313 /* Configure WR. Work request ID contains its own index in
2314 * the elts array and the offset between SGE buffer header and
2316 WR_ID(wr
->wr_id
).id
= i
;
2317 WR_ID(wr
->wr_id
).offset
=
2318 (((uintptr_t)buf
->buf_addr
+ RTE_PKTMBUF_HEADROOM
) -
2320 wr
->next
= &(*elts
)[(i
+ 1)].wr
;
2323 /* Headroom is reserved by rte_pktmbuf_alloc(). */
2324 assert(DATA_OFF(buf
) == RTE_PKTMBUF_HEADROOM
);
2325 /* Buffer is supposed to be empty. */
2326 assert(rte_pktmbuf_data_len(buf
) == 0);
2327 assert(rte_pktmbuf_pkt_len(buf
) == 0);
2328 /* sge->addr must be able to store a pointer. */
2329 assert(sizeof(sge
->addr
) >= sizeof(uintptr_t));
2330 /* SGE keeps its headroom. */
2331 sge
->addr
= (uintptr_t)
2332 ((uint8_t *)buf
->buf_addr
+ RTE_PKTMBUF_HEADROOM
);
2333 sge
->length
= (buf
->buf_len
- RTE_PKTMBUF_HEADROOM
);
2334 sge
->lkey
= rxq
->mr
->lkey
;
2335 /* Redundant check for tailroom. */
2336 assert(sge
->length
== rte_pktmbuf_tailroom(buf
));
2337 /* Make sure elts index and SGE mbuf pointer can be deduced
2339 if ((WR_ID(wr
->wr_id
).id
!= i
) ||
2340 ((void *)((uintptr_t)sge
->addr
-
2341 WR_ID(wr
->wr_id
).offset
) != buf
)) {
2342 ERROR("%p: cannot store index and offset in WR ID",
2345 rte_pktmbuf_free(buf
);
2350 /* The last WR pointer must be NULL. */
2351 (*elts
)[(i
- 1)].wr
.next
= NULL
;
2352 DEBUG("%p: allocated and configured %u single-segment WRs",
2353 (void *)rxq
, elts_n
);
2354 rxq
->elts_n
= elts_n
;
2356 rxq
->elts
.no_sp
= elts
;
2361 assert(pool
== NULL
);
2362 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2363 struct rxq_elt
*elt
= &(*elts
)[i
];
2364 struct rte_mbuf
*buf
;
2366 if (elt
->sge
.addr
== 0)
2368 assert(WR_ID(elt
->wr
.wr_id
).id
== i
);
2369 buf
= (void *)((uintptr_t)elt
->sge
.addr
-
2370 WR_ID(elt
->wr
.wr_id
).offset
);
2371 rte_pktmbuf_free_seg(buf
);
2375 DEBUG("%p: failed, freed everything", (void *)rxq
);
2381 * Free RX queue elements.
2384 * Pointer to RX queue structure.
2387 rxq_free_elts(struct rxq
*rxq
)
2390 unsigned int elts_n
= rxq
->elts_n
;
2391 struct rxq_elt (*elts
)[elts_n
] = rxq
->elts
.no_sp
;
2393 DEBUG("%p: freeing WRs", (void *)rxq
);
2395 rxq
->elts
.no_sp
= NULL
;
2398 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
2399 struct rxq_elt
*elt
= &(*elts
)[i
];
2400 struct rte_mbuf
*buf
;
2402 if (elt
->sge
.addr
== 0)
2404 assert(WR_ID(elt
->wr
.wr_id
).id
== i
);
2405 buf
= (void *)((uintptr_t)elt
->sge
.addr
-
2406 WR_ID(elt
->wr
.wr_id
).offset
);
2407 rte_pktmbuf_free_seg(buf
);
2413 * Delete flow steering rule.
2416 * Pointer to RX queue structure.
2418 * MAC address index.
2423 rxq_del_flow(struct rxq
*rxq
, unsigned int mac_index
, unsigned int vlan_index
)
2426 struct priv
*priv
= rxq
->priv
;
2427 const uint8_t (*mac
)[ETHER_ADDR_LEN
] =
2428 (const uint8_t (*)[ETHER_ADDR_LEN
])
2429 priv
->mac
[mac_index
].addr_bytes
;
2431 assert(rxq
->mac_flow
[mac_index
][vlan_index
] != NULL
);
2432 DEBUG("%p: removing MAC address %02x:%02x:%02x:%02x:%02x:%02x index %u"
2433 " (VLAN ID %" PRIu16
")",
2435 (*mac
)[0], (*mac
)[1], (*mac
)[2], (*mac
)[3], (*mac
)[4], (*mac
)[5],
2436 mac_index
, priv
->vlan_filter
[vlan_index
].id
);
2437 claim_zero(ibv_destroy_flow(rxq
->mac_flow
[mac_index
][vlan_index
]));
2438 rxq
->mac_flow
[mac_index
][vlan_index
] = NULL
;
2442 * Unregister a MAC address from a RX queue.
2445 * Pointer to RX queue structure.
2447 * MAC address index.
2450 rxq_mac_addr_del(struct rxq
*rxq
, unsigned int mac_index
)
2452 struct priv
*priv
= rxq
->priv
;
2454 unsigned int vlans
= 0;
2456 assert(mac_index
< elemof(priv
->mac
));
2457 if (!BITFIELD_ISSET(rxq
->mac_configured
, mac_index
))
2459 for (i
= 0; (i
!= elemof(priv
->vlan_filter
)); ++i
) {
2460 if (!priv
->vlan_filter
[i
].enabled
)
2462 rxq_del_flow(rxq
, mac_index
, i
);
2466 rxq_del_flow(rxq
, mac_index
, 0);
2468 BITFIELD_RESET(rxq
->mac_configured
, mac_index
);
2472 * Unregister all MAC addresses from a RX queue.
2475 * Pointer to RX queue structure.
2478 rxq_mac_addrs_del(struct rxq
*rxq
)
2480 struct priv
*priv
= rxq
->priv
;
2483 for (i
= 0; (i
!= elemof(priv
->mac
)); ++i
)
2484 rxq_mac_addr_del(rxq
, i
);
2487 static int rxq_promiscuous_enable(struct rxq
*);
2488 static void rxq_promiscuous_disable(struct rxq
*);
2491 * Add single flow steering rule.
2494 * Pointer to RX queue structure.
2496 * MAC address index to register.
2498 * VLAN index. Use -1 for a flow without VLAN.
2501 * 0 on success, errno value on failure.
2504 rxq_add_flow(struct rxq
*rxq
, unsigned int mac_index
, unsigned int vlan_index
)
2506 struct ibv_flow
*flow
;
2507 struct priv
*priv
= rxq
->priv
;
2508 const uint8_t (*mac
)[ETHER_ADDR_LEN
] =
2509 (const uint8_t (*)[ETHER_ADDR_LEN
])
2510 priv
->mac
[mac_index
].addr_bytes
;
2512 /* Allocate flow specification on the stack. */
2513 struct __attribute__((packed
)) {
2514 struct ibv_flow_attr attr
;
2515 struct ibv_flow_spec_eth spec
;
2517 struct ibv_flow_attr
*attr
= &data
.attr
;
2518 struct ibv_flow_spec_eth
*spec
= &data
.spec
;
2520 assert(mac_index
< elemof(priv
->mac
));
2521 assert((vlan_index
< elemof(priv
->vlan_filter
)) || (vlan_index
== -1u));
2523 * No padding must be inserted by the compiler between attr and spec.
2524 * This layout is expected by libibverbs.
2526 assert(((uint8_t *)attr
+ sizeof(*attr
)) == (uint8_t *)spec
);
2527 *attr
= (struct ibv_flow_attr
){
2528 .type
= IBV_FLOW_ATTR_NORMAL
,
2533 *spec
= (struct ibv_flow_spec_eth
){
2534 .type
= IBV_FLOW_SPEC_ETH
,
2535 .size
= sizeof(*spec
),
2538 (*mac
)[0], (*mac
)[1], (*mac
)[2],
2539 (*mac
)[3], (*mac
)[4], (*mac
)[5]
2541 .vlan_tag
= ((vlan_index
!= -1u) ?
2542 htons(priv
->vlan_filter
[vlan_index
].id
) :
2546 .dst_mac
= "\xff\xff\xff\xff\xff\xff",
2547 .vlan_tag
= ((vlan_index
!= -1u) ? htons(0xfff) : 0),
2550 DEBUG("%p: adding MAC address %02x:%02x:%02x:%02x:%02x:%02x index %u"
2551 " (VLAN %s %" PRIu16
")",
2553 (*mac
)[0], (*mac
)[1], (*mac
)[2], (*mac
)[3], (*mac
)[4], (*mac
)[5],
2555 ((vlan_index
!= -1u) ? "ID" : "index"),
2556 ((vlan_index
!= -1u) ? priv
->vlan_filter
[vlan_index
].id
: -1u));
2557 /* Create related flow. */
2559 flow
= ibv_create_flow(rxq
->qp
, attr
);
2561 /* It's not clear whether errno is always set in this case. */
2562 ERROR("%p: flow configuration failed, errno=%d: %s",
2564 (errno
? strerror(errno
) : "Unknown error"));
2569 if (vlan_index
== -1u)
2571 assert(rxq
->mac_flow
[mac_index
][vlan_index
] == NULL
);
2572 rxq
->mac_flow
[mac_index
][vlan_index
] = flow
;
2577 * Register a MAC address in a RX queue.
2580 * Pointer to RX queue structure.
2582 * MAC address index to register.
2585 * 0 on success, errno value on failure.
2588 rxq_mac_addr_add(struct rxq
*rxq
, unsigned int mac_index
)
2590 struct priv
*priv
= rxq
->priv
;
2592 unsigned int vlans
= 0;
2595 assert(mac_index
< elemof(priv
->mac
));
2596 if (BITFIELD_ISSET(rxq
->mac_configured
, mac_index
))
2597 rxq_mac_addr_del(rxq
, mac_index
);
2598 /* Fill VLAN specifications. */
2599 for (i
= 0; (i
!= elemof(priv
->vlan_filter
)); ++i
) {
2600 if (!priv
->vlan_filter
[i
].enabled
)
2602 /* Create related flow. */
2603 ret
= rxq_add_flow(rxq
, mac_index
, i
);
2608 /* Failure, rollback. */
2610 if (priv
->vlan_filter
[--i
].enabled
)
2611 rxq_del_flow(rxq
, mac_index
, i
);
2615 /* In case there is no VLAN filter. */
2617 ret
= rxq_add_flow(rxq
, mac_index
, -1);
2621 BITFIELD_SET(rxq
->mac_configured
, mac_index
);
2626 * Register all MAC addresses in a RX queue.
2629 * Pointer to RX queue structure.
2632 * 0 on success, errno value on failure.
2635 rxq_mac_addrs_add(struct rxq
*rxq
)
2637 struct priv
*priv
= rxq
->priv
;
2641 for (i
= 0; (i
!= elemof(priv
->mac
)); ++i
) {
2642 if (!BITFIELD_ISSET(priv
->mac_configured
, i
))
2644 ret
= rxq_mac_addr_add(rxq
, i
);
2647 /* Failure, rollback. */
2649 rxq_mac_addr_del(rxq
, --i
);
2657 * Unregister a MAC address.
2659 * In RSS mode, the MAC address is unregistered from the parent queue,
2660 * otherwise it is unregistered from each queue directly.
2663 * Pointer to private structure.
2665 * MAC address index.
2668 priv_mac_addr_del(struct priv
*priv
, unsigned int mac_index
)
2672 assert(mac_index
< elemof(priv
->mac
));
2673 if (!BITFIELD_ISSET(priv
->mac_configured
, mac_index
))
2676 rxq_mac_addr_del(&priv
->rxq_parent
, mac_index
);
2679 for (i
= 0; (i
!= priv
->dev
->data
->nb_rx_queues
); ++i
)
2680 rxq_mac_addr_del((*priv
->rxqs
)[i
], mac_index
);
2682 BITFIELD_RESET(priv
->mac_configured
, mac_index
);
2686 * Register a MAC address.
2688 * In RSS mode, the MAC address is registered in the parent queue,
2689 * otherwise it is registered in each queue directly.
2692 * Pointer to private structure.
2694 * MAC address index to use.
2696 * MAC address to register.
2699 * 0 on success, errno value on failure.
2702 priv_mac_addr_add(struct priv
*priv
, unsigned int mac_index
,
2703 const uint8_t (*mac
)[ETHER_ADDR_LEN
])
2708 assert(mac_index
< elemof(priv
->mac
));
2709 /* First, make sure this address isn't already configured. */
2710 for (i
= 0; (i
!= elemof(priv
->mac
)); ++i
) {
2711 /* Skip this index, it's going to be reconfigured. */
2714 if (!BITFIELD_ISSET(priv
->mac_configured
, i
))
2716 if (memcmp(priv
->mac
[i
].addr_bytes
, *mac
, sizeof(*mac
)))
2718 /* Address already configured elsewhere, return with error. */
2721 if (BITFIELD_ISSET(priv
->mac_configured
, mac_index
))
2722 priv_mac_addr_del(priv
, mac_index
);
2723 priv
->mac
[mac_index
] = (struct ether_addr
){
2725 (*mac
)[0], (*mac
)[1], (*mac
)[2],
2726 (*mac
)[3], (*mac
)[4], (*mac
)[5]
2729 /* If device isn't started, this is all we need to do. */
2730 if (!priv
->started
) {
2732 /* Verify that all queues have this index disabled. */
2733 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
2734 if ((*priv
->rxqs
)[i
] == NULL
)
2736 assert(!BITFIELD_ISSET
2737 ((*priv
->rxqs
)[i
]->mac_configured
, mac_index
));
2743 ret
= rxq_mac_addr_add(&priv
->rxq_parent
, mac_index
);
2748 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
2749 if ((*priv
->rxqs
)[i
] == NULL
)
2751 ret
= rxq_mac_addr_add((*priv
->rxqs
)[i
], mac_index
);
2754 /* Failure, rollback. */
2756 if ((*priv
->rxqs
)[(--i
)] != NULL
)
2757 rxq_mac_addr_del((*priv
->rxqs
)[i
], mac_index
);
2761 BITFIELD_SET(priv
->mac_configured
, mac_index
);
2766 * Enable allmulti mode in a RX queue.
2769 * Pointer to RX queue structure.
2772 * 0 on success, errno value on failure.
2775 rxq_allmulticast_enable(struct rxq
*rxq
)
2777 struct ibv_flow
*flow
;
2778 struct ibv_flow_attr attr
= {
2779 .type
= IBV_FLOW_ATTR_MC_DEFAULT
,
2781 .port
= rxq
->priv
->port
,
2785 DEBUG("%p: enabling allmulticast mode", (void *)rxq
);
2786 if (rxq
->allmulti_flow
!= NULL
)
2789 flow
= ibv_create_flow(rxq
->qp
, &attr
);
2791 /* It's not clear whether errno is always set in this case. */
2792 ERROR("%p: flow configuration failed, errno=%d: %s",
2794 (errno
? strerror(errno
) : "Unknown error"));
2799 rxq
->allmulti_flow
= flow
;
2800 DEBUG("%p: allmulticast mode enabled", (void *)rxq
);
2805 * Disable allmulti mode in a RX queue.
2808 * Pointer to RX queue structure.
2811 rxq_allmulticast_disable(struct rxq
*rxq
)
2813 DEBUG("%p: disabling allmulticast mode", (void *)rxq
);
2814 if (rxq
->allmulti_flow
== NULL
)
2816 claim_zero(ibv_destroy_flow(rxq
->allmulti_flow
));
2817 rxq
->allmulti_flow
= NULL
;
2818 DEBUG("%p: allmulticast mode disabled", (void *)rxq
);
2822 * Enable promiscuous mode in a RX queue.
2825 * Pointer to RX queue structure.
2828 * 0 on success, errno value on failure.
2831 rxq_promiscuous_enable(struct rxq
*rxq
)
2833 struct ibv_flow
*flow
;
2834 struct ibv_flow_attr attr
= {
2835 .type
= IBV_FLOW_ATTR_ALL_DEFAULT
,
2837 .port
= rxq
->priv
->port
,
2843 DEBUG("%p: enabling promiscuous mode", (void *)rxq
);
2844 if (rxq
->promisc_flow
!= NULL
)
2847 flow
= ibv_create_flow(rxq
->qp
, &attr
);
2849 /* It's not clear whether errno is always set in this case. */
2850 ERROR("%p: flow configuration failed, errno=%d: %s",
2852 (errno
? strerror(errno
) : "Unknown error"));
2857 rxq
->promisc_flow
= flow
;
2858 DEBUG("%p: promiscuous mode enabled", (void *)rxq
);
2863 * Disable promiscuous mode in a RX queue.
2866 * Pointer to RX queue structure.
2869 rxq_promiscuous_disable(struct rxq
*rxq
)
2873 DEBUG("%p: disabling promiscuous mode", (void *)rxq
);
2874 if (rxq
->promisc_flow
== NULL
)
2876 claim_zero(ibv_destroy_flow(rxq
->promisc_flow
));
2877 rxq
->promisc_flow
= NULL
;
2878 DEBUG("%p: promiscuous mode disabled", (void *)rxq
);
2882 * Clean up a RX queue.
2884 * Destroy objects, free allocated memory and reset the structure for reuse.
2887 * Pointer to RX queue structure.
2890 rxq_cleanup(struct rxq
*rxq
)
2892 struct ibv_exp_release_intf_params params
;
2894 DEBUG("cleaning up %p", (void *)rxq
);
2896 rxq_free_elts_sp(rxq
);
2899 if (rxq
->if_qp
!= NULL
) {
2900 assert(rxq
->priv
!= NULL
);
2901 assert(rxq
->priv
->ctx
!= NULL
);
2902 assert(rxq
->qp
!= NULL
);
2903 params
= (struct ibv_exp_release_intf_params
){
2906 claim_zero(ibv_exp_release_intf(rxq
->priv
->ctx
,
2910 if (rxq
->if_cq
!= NULL
) {
2911 assert(rxq
->priv
!= NULL
);
2912 assert(rxq
->priv
->ctx
!= NULL
);
2913 assert(rxq
->cq
!= NULL
);
2914 params
= (struct ibv_exp_release_intf_params
){
2917 claim_zero(ibv_exp_release_intf(rxq
->priv
->ctx
,
2921 if (rxq
->qp
!= NULL
) {
2922 rxq_promiscuous_disable(rxq
);
2923 rxq_allmulticast_disable(rxq
);
2924 rxq_mac_addrs_del(rxq
);
2925 claim_zero(ibv_destroy_qp(rxq
->qp
));
2927 if (rxq
->cq
!= NULL
)
2928 claim_zero(ibv_destroy_cq(rxq
->cq
));
2929 if (rxq
->rd
!= NULL
) {
2930 struct ibv_exp_destroy_res_domain_attr attr
= {
2934 assert(rxq
->priv
!= NULL
);
2935 assert(rxq
->priv
->ctx
!= NULL
);
2936 claim_zero(ibv_exp_destroy_res_domain(rxq
->priv
->ctx
,
2940 if (rxq
->mr
!= NULL
)
2941 claim_zero(ibv_dereg_mr(rxq
->mr
));
2942 memset(rxq
, 0, sizeof(*rxq
));
2946 * Translate RX completion flags to packet type.
2949 * RX completion flags returned by poll_length_flags().
2951 * @note: fix mlx4_dev_supported_ptypes_get() if any change here.
2954 * Packet type for struct rte_mbuf.
2956 static inline uint32_t
2957 rxq_cq_to_pkt_type(uint32_t flags
)
2961 if (flags
& IBV_EXP_CQ_RX_TUNNEL_PACKET
)
2964 IBV_EXP_CQ_RX_OUTER_IPV4_PACKET
, RTE_PTYPE_L3_IPV4
) |
2966 IBV_EXP_CQ_RX_OUTER_IPV6_PACKET
, RTE_PTYPE_L3_IPV6
) |
2968 IBV_EXP_CQ_RX_IPV4_PACKET
, RTE_PTYPE_INNER_L3_IPV4
) |
2970 IBV_EXP_CQ_RX_IPV6_PACKET
, RTE_PTYPE_INNER_L3_IPV6
);
2974 IBV_EXP_CQ_RX_IPV4_PACKET
, RTE_PTYPE_L3_IPV4
) |
2976 IBV_EXP_CQ_RX_IPV6_PACKET
, RTE_PTYPE_L3_IPV6
);
2981 * Translate RX completion flags to offload flags.
2984 * Pointer to RX queue structure.
2986 * RX completion flags returned by poll_length_flags().
2989 * Offload flags (ol_flags) for struct rte_mbuf.
2991 static inline uint32_t
2992 rxq_cq_to_ol_flags(const struct rxq
*rxq
, uint32_t flags
)
2994 uint32_t ol_flags
= 0;
2999 IBV_EXP_CQ_RX_IP_CSUM_OK
,
3000 PKT_RX_IP_CKSUM_GOOD
) |
3002 IBV_EXP_CQ_RX_TCP_UDP_CSUM_OK
,
3003 PKT_RX_L4_CKSUM_GOOD
);
3004 if ((flags
& IBV_EXP_CQ_RX_TUNNEL_PACKET
) && (rxq
->csum_l2tun
))
3007 IBV_EXP_CQ_RX_OUTER_IP_CSUM_OK
,
3008 PKT_RX_IP_CKSUM_GOOD
) |
3010 IBV_EXP_CQ_RX_OUTER_TCP_UDP_CSUM_OK
,
3011 PKT_RX_L4_CKSUM_GOOD
);
3016 mlx4_rx_burst(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
);
3019 * DPDK callback for RX with scattered packets support.
3022 * Generic pointer to RX queue structure.
3024 * Array to store received packets.
3026 * Maximum number of packets in array.
3029 * Number of packets successfully received (<= pkts_n).
3032 mlx4_rx_burst_sp(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
3034 struct rxq
*rxq
= (struct rxq
*)dpdk_rxq
;
3035 struct rxq_elt_sp (*elts
)[rxq
->elts_n
] = rxq
->elts
.sp
;
3036 const unsigned int elts_n
= rxq
->elts_n
;
3037 unsigned int elts_head
= rxq
->elts_head
;
3038 struct ibv_recv_wr head
;
3039 struct ibv_recv_wr
**next
= &head
.next
;
3040 struct ibv_recv_wr
*bad_wr
;
3042 unsigned int pkts_ret
= 0;
3045 if (unlikely(!rxq
->sp
))
3046 return mlx4_rx_burst(dpdk_rxq
, pkts
, pkts_n
);
3047 if (unlikely(elts
== NULL
)) /* See RTE_DEV_CMD_SET_MTU. */
3049 for (i
= 0; (i
!= pkts_n
); ++i
) {
3050 struct rxq_elt_sp
*elt
= &(*elts
)[elts_head
];
3051 struct ibv_recv_wr
*wr
= &elt
->wr
;
3052 uint64_t wr_id
= wr
->wr_id
;
3054 unsigned int pkt_buf_len
;
3055 struct rte_mbuf
*pkt_buf
= NULL
; /* Buffer returned in pkts. */
3056 struct rte_mbuf
**pkt_buf_next
= &pkt_buf
;
3057 unsigned int seg_headroom
= RTE_PKTMBUF_HEADROOM
;
3061 /* Sanity checks. */
3065 assert(wr_id
< rxq
->elts_n
);
3066 assert(wr
->sg_list
== elt
->sges
);
3067 assert(wr
->num_sge
== elemof(elt
->sges
));
3068 assert(elts_head
< rxq
->elts_n
);
3069 assert(rxq
->elts_head
< rxq
->elts_n
);
3070 ret
= rxq
->if_cq
->poll_length_flags(rxq
->cq
, NULL
, NULL
,
3072 if (unlikely(ret
< 0)) {
3076 DEBUG("rxq=%p, poll_length() failed (ret=%d)",
3078 /* ibv_poll_cq() must be used in case of failure. */
3079 wcs_n
= ibv_poll_cq(rxq
->cq
, 1, &wc
);
3080 if (unlikely(wcs_n
== 0))
3082 if (unlikely(wcs_n
< 0)) {
3083 DEBUG("rxq=%p, ibv_poll_cq() failed (wcs_n=%d)",
3084 (void *)rxq
, wcs_n
);
3088 if (unlikely(wc
.status
!= IBV_WC_SUCCESS
)) {
3089 /* Whatever, just repost the offending WR. */
3090 DEBUG("rxq=%p, wr_id=%" PRIu64
": bad work"
3091 " completion status (%d): %s",
3092 (void *)rxq
, wc
.wr_id
, wc
.status
,
3093 ibv_wc_status_str(wc
.status
));
3094 #ifdef MLX4_PMD_SOFT_COUNTERS
3095 /* Increment dropped packets counter. */
3096 ++rxq
->stats
.idropped
;
3098 /* Link completed WRs together for repost. */
3109 /* Link completed WRs together for repost. */
3113 * Replace spent segments with new ones, concatenate and
3114 * return them as pkt_buf.
3117 struct ibv_sge
*sge
= &elt
->sges
[j
];
3118 struct rte_mbuf
*seg
= elt
->bufs
[j
];
3119 struct rte_mbuf
*rep
;
3120 unsigned int seg_tailroom
;
3123 * Fetch initial bytes of packet descriptor into a
3124 * cacheline while allocating rep.
3127 rep
= rte_mbuf_raw_alloc(rxq
->mp
);
3128 if (unlikely(rep
== NULL
)) {
3130 * Unable to allocate a replacement mbuf,
3133 DEBUG("rxq=%p, wr_id=%" PRIu64
":"
3134 " can't allocate a new mbuf",
3135 (void *)rxq
, wr_id
);
3136 if (pkt_buf
!= NULL
) {
3137 *pkt_buf_next
= NULL
;
3138 rte_pktmbuf_free(pkt_buf
);
3140 /* Increase out of memory counters. */
3141 ++rxq
->stats
.rx_nombuf
;
3142 ++rxq
->priv
->dev
->data
->rx_mbuf_alloc_failed
;
3146 /* Poison user-modifiable fields in rep. */
3147 NEXT(rep
) = (void *)((uintptr_t)-1);
3148 SET_DATA_OFF(rep
, 0xdead);
3149 DATA_LEN(rep
) = 0xd00d;
3150 PKT_LEN(rep
) = 0xdeadd00d;
3151 NB_SEGS(rep
) = 0x2a;
3155 assert(rep
->buf_len
== seg
->buf_len
);
3156 /* Reconfigure sge to use rep instead of seg. */
3157 assert(sge
->lkey
== rxq
->mr
->lkey
);
3158 sge
->addr
= ((uintptr_t)rep
->buf_addr
+ seg_headroom
);
3161 /* Update pkt_buf if it's the first segment, or link
3162 * seg to the previous one and update pkt_buf_next. */
3163 *pkt_buf_next
= seg
;
3164 pkt_buf_next
= &NEXT(seg
);
3165 /* Update seg information. */
3166 seg_tailroom
= (seg
->buf_len
- seg_headroom
);
3167 assert(sge
->length
== seg_tailroom
);
3168 SET_DATA_OFF(seg
, seg_headroom
);
3169 if (likely(len
<= seg_tailroom
)) {
3171 DATA_LEN(seg
) = len
;
3174 assert(rte_pktmbuf_headroom(seg
) ==
3176 assert(rte_pktmbuf_tailroom(seg
) ==
3177 (seg_tailroom
- len
));
3180 DATA_LEN(seg
) = seg_tailroom
;
3181 PKT_LEN(seg
) = seg_tailroom
;
3183 assert(rte_pktmbuf_headroom(seg
) == seg_headroom
);
3184 assert(rte_pktmbuf_tailroom(seg
) == 0);
3185 /* Fix len and clear headroom for next segments. */
3186 len
-= seg_tailroom
;
3189 /* Update head and tail segments. */
3190 *pkt_buf_next
= NULL
;
3191 assert(pkt_buf
!= NULL
);
3193 NB_SEGS(pkt_buf
) = j
;
3194 PORT(pkt_buf
) = rxq
->port_id
;
3195 PKT_LEN(pkt_buf
) = pkt_buf_len
;
3196 pkt_buf
->packet_type
= rxq_cq_to_pkt_type(flags
);
3197 pkt_buf
->ol_flags
= rxq_cq_to_ol_flags(rxq
, flags
);
3199 /* Return packet. */
3200 *(pkts
++) = pkt_buf
;
3202 #ifdef MLX4_PMD_SOFT_COUNTERS
3203 /* Increase bytes counter. */
3204 rxq
->stats
.ibytes
+= pkt_buf_len
;
3207 if (++elts_head
>= elts_n
)
3211 if (unlikely(i
== 0))
3216 DEBUG("%p: reposting %d WRs", (void *)rxq
, i
);
3218 ret
= ibv_post_recv(rxq
->qp
, head
.next
, &bad_wr
);
3219 if (unlikely(ret
)) {
3220 /* Inability to repost WRs is fatal. */
3221 DEBUG("%p: ibv_post_recv(): failed for WR %p: %s",
3227 rxq
->elts_head
= elts_head
;
3228 #ifdef MLX4_PMD_SOFT_COUNTERS
3229 /* Increase packets counter. */
3230 rxq
->stats
.ipackets
+= pkts_ret
;
3236 * DPDK callback for RX.
3238 * The following function is the same as mlx4_rx_burst_sp(), except it doesn't
3239 * manage scattered packets. Improves performance when MRU is lower than the
3240 * size of the first segment.
3243 * Generic pointer to RX queue structure.
3245 * Array to store received packets.
3247 * Maximum number of packets in array.
3250 * Number of packets successfully received (<= pkts_n).
3253 mlx4_rx_burst(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
3255 struct rxq
*rxq
= (struct rxq
*)dpdk_rxq
;
3256 struct rxq_elt (*elts
)[rxq
->elts_n
] = rxq
->elts
.no_sp
;
3257 const unsigned int elts_n
= rxq
->elts_n
;
3258 unsigned int elts_head
= rxq
->elts_head
;
3259 struct ibv_sge sges
[pkts_n
];
3261 unsigned int pkts_ret
= 0;
3264 if (unlikely(rxq
->sp
))
3265 return mlx4_rx_burst_sp(dpdk_rxq
, pkts
, pkts_n
);
3266 for (i
= 0; (i
!= pkts_n
); ++i
) {
3267 struct rxq_elt
*elt
= &(*elts
)[elts_head
];
3268 struct ibv_recv_wr
*wr
= &elt
->wr
;
3269 uint64_t wr_id
= wr
->wr_id
;
3271 struct rte_mbuf
*seg
= (void *)((uintptr_t)elt
->sge
.addr
-
3272 WR_ID(wr_id
).offset
);
3273 struct rte_mbuf
*rep
;
3276 /* Sanity checks. */
3277 assert(WR_ID(wr_id
).id
< rxq
->elts_n
);
3278 assert(wr
->sg_list
== &elt
->sge
);
3279 assert(wr
->num_sge
== 1);
3280 assert(elts_head
< rxq
->elts_n
);
3281 assert(rxq
->elts_head
< rxq
->elts_n
);
3283 * Fetch initial bytes of packet descriptor into a
3284 * cacheline while allocating rep.
3286 rte_mbuf_prefetch_part1(seg
);
3287 rte_mbuf_prefetch_part2(seg
);
3288 ret
= rxq
->if_cq
->poll_length_flags(rxq
->cq
, NULL
, NULL
,
3290 if (unlikely(ret
< 0)) {
3294 DEBUG("rxq=%p, poll_length() failed (ret=%d)",
3296 /* ibv_poll_cq() must be used in case of failure. */
3297 wcs_n
= ibv_poll_cq(rxq
->cq
, 1, &wc
);
3298 if (unlikely(wcs_n
== 0))
3300 if (unlikely(wcs_n
< 0)) {
3301 DEBUG("rxq=%p, ibv_poll_cq() failed (wcs_n=%d)",
3302 (void *)rxq
, wcs_n
);
3306 if (unlikely(wc
.status
!= IBV_WC_SUCCESS
)) {
3307 /* Whatever, just repost the offending WR. */
3308 DEBUG("rxq=%p, wr_id=%" PRIu64
": bad work"
3309 " completion status (%d): %s",
3310 (void *)rxq
, wc
.wr_id
, wc
.status
,
3311 ibv_wc_status_str(wc
.status
));
3312 #ifdef MLX4_PMD_SOFT_COUNTERS
3313 /* Increment dropped packets counter. */
3314 ++rxq
->stats
.idropped
;
3316 /* Add SGE to array for repost. */
3325 rep
= rte_mbuf_raw_alloc(rxq
->mp
);
3326 if (unlikely(rep
== NULL
)) {
3328 * Unable to allocate a replacement mbuf,
3331 DEBUG("rxq=%p, wr_id=%" PRIu32
":"
3332 " can't allocate a new mbuf",
3333 (void *)rxq
, WR_ID(wr_id
).id
);
3334 /* Increase out of memory counters. */
3335 ++rxq
->stats
.rx_nombuf
;
3336 ++rxq
->priv
->dev
->data
->rx_mbuf_alloc_failed
;
3340 /* Reconfigure sge to use rep instead of seg. */
3341 elt
->sge
.addr
= (uintptr_t)rep
->buf_addr
+ RTE_PKTMBUF_HEADROOM
;
3342 assert(elt
->sge
.lkey
== rxq
->mr
->lkey
);
3343 WR_ID(wr
->wr_id
).offset
=
3344 (((uintptr_t)rep
->buf_addr
+ RTE_PKTMBUF_HEADROOM
) -
3346 assert(WR_ID(wr
->wr_id
).id
== WR_ID(wr_id
).id
);
3348 /* Add SGE to array for repost. */
3351 /* Update seg information. */
3352 SET_DATA_OFF(seg
, RTE_PKTMBUF_HEADROOM
);
3354 PORT(seg
) = rxq
->port_id
;
3357 DATA_LEN(seg
) = len
;
3358 seg
->packet_type
= rxq_cq_to_pkt_type(flags
);
3359 seg
->ol_flags
= rxq_cq_to_ol_flags(rxq
, flags
);
3361 /* Return packet. */
3364 #ifdef MLX4_PMD_SOFT_COUNTERS
3365 /* Increase bytes counter. */
3366 rxq
->stats
.ibytes
+= len
;
3369 if (++elts_head
>= elts_n
)
3373 if (unlikely(i
== 0))
3377 DEBUG("%p: reposting %u WRs", (void *)rxq
, i
);
3379 ret
= rxq
->if_qp
->recv_burst(rxq
->qp
, sges
, i
);
3380 if (unlikely(ret
)) {
3381 /* Inability to repost WRs is fatal. */
3382 DEBUG("%p: recv_burst(): failed (ret=%d)",
3387 rxq
->elts_head
= elts_head
;
3388 #ifdef MLX4_PMD_SOFT_COUNTERS
3389 /* Increase packets counter. */
3390 rxq
->stats
.ipackets
+= pkts_ret
;
3396 * DPDK callback for RX in secondary processes.
3398 * This function configures all queues from primary process information
3399 * if necessary before reverting to the normal RX burst callback.
3402 * Generic pointer to RX queue structure.
3404 * Array to store received packets.
3406 * Maximum number of packets in array.
3409 * Number of packets successfully received (<= pkts_n).
3412 mlx4_rx_burst_secondary_setup(void *dpdk_rxq
, struct rte_mbuf
**pkts
,
3415 struct rxq
*rxq
= dpdk_rxq
;
3416 struct priv
*priv
= mlx4_secondary_data_setup(rxq
->priv
);
3417 struct priv
*primary_priv
;
3423 mlx4_secondary_data
[priv
->dev
->data
->port_id
].primary_priv
;
3424 /* Look for queue index in both private structures. */
3425 for (index
= 0; index
!= priv
->rxqs_n
; ++index
)
3426 if (((*primary_priv
->rxqs
)[index
] == rxq
) ||
3427 ((*priv
->rxqs
)[index
] == rxq
))
3429 if (index
== priv
->rxqs_n
)
3431 rxq
= (*priv
->rxqs
)[index
];
3432 return priv
->dev
->rx_pkt_burst(rxq
, pkts
, pkts_n
);
3436 * Allocate a Queue Pair.
3437 * Optionally setup inline receive if supported.
3440 * Pointer to private structure.
3442 * Completion queue to associate with QP.
3444 * Number of descriptors in QP (hint only).
3447 * QP pointer or NULL in case of error.
3449 static struct ibv_qp
*
3450 rxq_setup_qp(struct priv
*priv
, struct ibv_cq
*cq
, uint16_t desc
,
3451 struct ibv_exp_res_domain
*rd
)
3453 struct ibv_exp_qp_init_attr attr
= {
3454 /* CQ to be associated with the send queue. */
3456 /* CQ to be associated with the receive queue. */
3459 /* Max number of outstanding WRs. */
3460 .max_recv_wr
= ((priv
->device_attr
.max_qp_wr
< desc
) ?
3461 priv
->device_attr
.max_qp_wr
:
3463 /* Max number of scatter/gather elements in a WR. */
3464 .max_recv_sge
= ((priv
->device_attr
.max_sge
<
3465 MLX4_PMD_SGE_WR_N
) ?
3466 priv
->device_attr
.max_sge
:
3469 .qp_type
= IBV_QPT_RAW_PACKET
,
3470 .comp_mask
= (IBV_EXP_QP_INIT_ATTR_PD
|
3471 IBV_EXP_QP_INIT_ATTR_RES_DOMAIN
),
3477 attr
.max_inl_recv
= priv
->inl_recv_size
;
3478 attr
.comp_mask
|= IBV_EXP_QP_INIT_ATTR_INL_RECV
;
3480 return ibv_exp_create_qp(priv
->ctx
, &attr
);
3486 * Allocate a RSS Queue Pair.
3487 * Optionally setup inline receive if supported.
3490 * Pointer to private structure.
3492 * Completion queue to associate with QP.
3494 * Number of descriptors in QP (hint only).
3496 * If nonzero, create a parent QP, otherwise a child.
3499 * QP pointer or NULL in case of error.
3501 static struct ibv_qp
*
3502 rxq_setup_qp_rss(struct priv
*priv
, struct ibv_cq
*cq
, uint16_t desc
,
3503 int parent
, struct ibv_exp_res_domain
*rd
)
3505 struct ibv_exp_qp_init_attr attr
= {
3506 /* CQ to be associated with the send queue. */
3508 /* CQ to be associated with the receive queue. */
3511 /* Max number of outstanding WRs. */
3512 .max_recv_wr
= ((priv
->device_attr
.max_qp_wr
< desc
) ?
3513 priv
->device_attr
.max_qp_wr
:
3515 /* Max number of scatter/gather elements in a WR. */
3516 .max_recv_sge
= ((priv
->device_attr
.max_sge
<
3517 MLX4_PMD_SGE_WR_N
) ?
3518 priv
->device_attr
.max_sge
:
3521 .qp_type
= IBV_QPT_RAW_PACKET
,
3522 .comp_mask
= (IBV_EXP_QP_INIT_ATTR_PD
|
3523 IBV_EXP_QP_INIT_ATTR_RES_DOMAIN
|
3524 IBV_EXP_QP_INIT_ATTR_QPG
),
3530 attr
.max_inl_recv
= priv
->inl_recv_size
,
3531 attr
.comp_mask
|= IBV_EXP_QP_INIT_ATTR_INL_RECV
;
3534 attr
.qpg
.qpg_type
= IBV_EXP_QPG_PARENT
;
3535 /* TSS isn't necessary. */
3536 attr
.qpg
.parent_attrib
.tss_child_count
= 0;
3537 attr
.qpg
.parent_attrib
.rss_child_count
=
3538 rte_align32pow2(priv
->rxqs_n
+ 1) >> 1;
3539 DEBUG("initializing parent RSS queue");
3541 attr
.qpg
.qpg_type
= IBV_EXP_QPG_CHILD_RX
;
3542 attr
.qpg
.qpg_parent
= priv
->rxq_parent
.qp
;
3543 DEBUG("initializing child RSS queue");
3545 return ibv_exp_create_qp(priv
->ctx
, &attr
);
3548 #endif /* RSS_SUPPORT */
3551 * Reconfigure a RX queue with new parameters.
3553 * rxq_rehash() does not allocate mbufs, which, if not done from the right
3554 * thread (such as a control thread), may corrupt the pool.
3555 * In case of failure, the queue is left untouched.
3558 * Pointer to Ethernet device structure.
3563 * 0 on success, errno value on failure.
3566 rxq_rehash(struct rte_eth_dev
*dev
, struct rxq
*rxq
)
3568 struct priv
*priv
= rxq
->priv
;
3569 struct rxq tmpl
= *rxq
;
3570 unsigned int mbuf_n
;
3571 unsigned int desc_n
;
3572 struct rte_mbuf
**pool
;
3574 struct ibv_exp_qp_attr mod
;
3575 struct ibv_recv_wr
*bad_wr
;
3576 unsigned int mb_len
;
3578 int parent
= (rxq
== &priv
->rxq_parent
);
3581 ERROR("%p: cannot rehash parent queue %p",
3582 (void *)dev
, (void *)rxq
);
3585 mb_len
= rte_pktmbuf_data_room_size(rxq
->mp
);
3586 DEBUG("%p: rehashing queue %p", (void *)dev
, (void *)rxq
);
3587 /* Number of descriptors and mbufs currently allocated. */
3588 desc_n
= (tmpl
.elts_n
* (tmpl
.sp
? MLX4_PMD_SGE_WR_N
: 1));
3590 /* Toggle RX checksum offload if hardware supports it. */
3591 if (priv
->hw_csum
) {
3592 tmpl
.csum
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3593 rxq
->csum
= tmpl
.csum
;
3595 if (priv
->hw_csum_l2tun
) {
3596 tmpl
.csum_l2tun
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3597 rxq
->csum_l2tun
= tmpl
.csum_l2tun
;
3599 /* Enable scattered packets support for this queue if necessary. */
3600 assert(mb_len
>= RTE_PKTMBUF_HEADROOM
);
3601 if ((dev
->data
->dev_conf
.rxmode
.jumbo_frame
) &&
3602 (dev
->data
->dev_conf
.rxmode
.max_rx_pkt_len
>
3603 (mb_len
- RTE_PKTMBUF_HEADROOM
))) {
3605 desc_n
/= MLX4_PMD_SGE_WR_N
;
3608 DEBUG("%p: %s scattered packets support (%u WRs)",
3609 (void *)dev
, (tmpl
.sp
? "enabling" : "disabling"), desc_n
);
3610 /* If scatter mode is the same as before, nothing to do. */
3611 if (tmpl
.sp
== rxq
->sp
) {
3612 DEBUG("%p: nothing to do", (void *)dev
);
3615 /* Remove attached flows if RSS is disabled (no parent queue). */
3617 rxq_allmulticast_disable(&tmpl
);
3618 rxq_promiscuous_disable(&tmpl
);
3619 rxq_mac_addrs_del(&tmpl
);
3620 /* Update original queue in case of failure. */
3621 rxq
->allmulti_flow
= tmpl
.allmulti_flow
;
3622 rxq
->promisc_flow
= tmpl
.promisc_flow
;
3623 memcpy(rxq
->mac_configured
, tmpl
.mac_configured
,
3624 sizeof(rxq
->mac_configured
));
3625 memcpy(rxq
->mac_flow
, tmpl
.mac_flow
, sizeof(rxq
->mac_flow
));
3627 /* From now on, any failure will render the queue unusable.
3628 * Reinitialize QP. */
3629 mod
= (struct ibv_exp_qp_attr
){ .qp_state
= IBV_QPS_RESET
};
3630 err
= ibv_exp_modify_qp(tmpl
.qp
, &mod
, IBV_EXP_QP_STATE
);
3632 ERROR("%p: cannot reset QP: %s", (void *)dev
, strerror(err
));
3636 err
= ibv_resize_cq(tmpl
.cq
, desc_n
);
3638 ERROR("%p: cannot resize CQ: %s", (void *)dev
, strerror(err
));
3642 mod
= (struct ibv_exp_qp_attr
){
3643 /* Move the QP to this state. */
3644 .qp_state
= IBV_QPS_INIT
,
3645 /* Primary port number. */
3646 .port_num
= priv
->port
3648 err
= ibv_exp_modify_qp(tmpl
.qp
, &mod
,
3651 (parent
? IBV_EXP_QP_GROUP_RSS
: 0) |
3652 #endif /* RSS_SUPPORT */
3655 ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
3656 (void *)dev
, strerror(err
));
3660 /* Reconfigure flows. Do not care for errors. */
3662 rxq_mac_addrs_add(&tmpl
);
3664 rxq_promiscuous_enable(&tmpl
);
3666 rxq_allmulticast_enable(&tmpl
);
3667 /* Update original queue in case of failure. */
3668 rxq
->allmulti_flow
= tmpl
.allmulti_flow
;
3669 rxq
->promisc_flow
= tmpl
.promisc_flow
;
3670 memcpy(rxq
->mac_configured
, tmpl
.mac_configured
,
3671 sizeof(rxq
->mac_configured
));
3672 memcpy(rxq
->mac_flow
, tmpl
.mac_flow
, sizeof(rxq
->mac_flow
));
3674 /* Allocate pool. */
3675 pool
= rte_malloc(__func__
, (mbuf_n
* sizeof(*pool
)), 0);
3677 ERROR("%p: cannot allocate memory", (void *)dev
);
3680 /* Snatch mbufs from original queue. */
3683 struct rxq_elt_sp (*elts
)[rxq
->elts_n
] = rxq
->elts
.sp
;
3685 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
3686 struct rxq_elt_sp
*elt
= &(*elts
)[i
];
3689 for (j
= 0; (j
!= elemof(elt
->bufs
)); ++j
) {
3690 assert(elt
->bufs
[j
] != NULL
);
3691 pool
[k
++] = elt
->bufs
[j
];
3695 struct rxq_elt (*elts
)[rxq
->elts_n
] = rxq
->elts
.no_sp
;
3697 for (i
= 0; (i
!= elemof(*elts
)); ++i
) {
3698 struct rxq_elt
*elt
= &(*elts
)[i
];
3699 struct rte_mbuf
*buf
= (void *)
3700 ((uintptr_t)elt
->sge
.addr
-
3701 WR_ID(elt
->wr
.wr_id
).offset
);
3703 assert(WR_ID(elt
->wr
.wr_id
).id
== i
);
3707 assert(k
== mbuf_n
);
3709 tmpl
.elts
.sp
= NULL
;
3710 assert((void *)&tmpl
.elts
.sp
== (void *)&tmpl
.elts
.no_sp
);
3712 rxq_alloc_elts_sp(&tmpl
, desc_n
, pool
) :
3713 rxq_alloc_elts(&tmpl
, desc_n
, pool
));
3715 ERROR("%p: cannot reallocate WRs, aborting", (void *)dev
);
3720 assert(tmpl
.elts_n
== desc_n
);
3721 assert(tmpl
.elts
.sp
!= NULL
);
3723 /* Clean up original data. */
3725 rte_free(rxq
->elts
.sp
);
3726 rxq
->elts
.sp
= NULL
;
3728 err
= ibv_post_recv(tmpl
.qp
,
3730 &(*tmpl
.elts
.sp
)[0].wr
:
3731 &(*tmpl
.elts
.no_sp
)[0].wr
),
3734 ERROR("%p: ibv_post_recv() failed for WR %p: %s",
3740 mod
= (struct ibv_exp_qp_attr
){
3741 .qp_state
= IBV_QPS_RTR
3743 err
= ibv_exp_modify_qp(tmpl
.qp
, &mod
, IBV_EXP_QP_STATE
);
3745 ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
3746 (void *)dev
, strerror(err
));
3754 * Configure a RX queue.
3757 * Pointer to Ethernet device structure.
3759 * Pointer to RX queue structure.
3761 * Number of descriptors to configure in queue.
3763 * NUMA socket on which memory must be allocated.
3765 * If true, the queue is disabled because its index is higher or
3766 * equal to the real number of queues, which must be a power of 2.
3768 * Thresholds parameters.
3770 * Memory pool for buffer allocations.
3773 * 0 on success, errno value on failure.
3776 rxq_setup(struct rte_eth_dev
*dev
, struct rxq
*rxq
, uint16_t desc
,
3777 unsigned int socket
, int inactive
, const struct rte_eth_rxconf
*conf
,
3778 struct rte_mempool
*mp
)
3780 struct priv
*priv
= dev
->data
->dev_private
;
3786 struct ibv_exp_qp_attr mod
;
3788 struct ibv_exp_query_intf_params params
;
3789 struct ibv_exp_cq_init_attr cq
;
3790 struct ibv_exp_res_domain_init_attr rd
;
3792 enum ibv_exp_query_intf_status status
;
3793 struct ibv_recv_wr
*bad_wr
;
3794 unsigned int mb_len
;
3796 int parent
= (rxq
== &priv
->rxq_parent
);
3798 (void)conf
; /* Thresholds configuration (ignored). */
3800 * If this is a parent queue, hardware must support RSS and
3801 * RSS must be enabled.
3803 assert((!parent
) || ((priv
->hw_rss
) && (priv
->rss
)));
3805 /* Even if unused, ibv_create_cq() requires at least one
3810 mb_len
= rte_pktmbuf_data_room_size(mp
);
3811 if ((desc
== 0) || (desc
% MLX4_PMD_SGE_WR_N
)) {
3812 ERROR("%p: invalid number of RX descriptors (must be a"
3813 " multiple of %d)", (void *)dev
, MLX4_PMD_SGE_WR_N
);
3816 /* Toggle RX checksum offload if hardware supports it. */
3818 tmpl
.csum
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3819 if (priv
->hw_csum_l2tun
)
3820 tmpl
.csum_l2tun
= !!dev
->data
->dev_conf
.rxmode
.hw_ip_checksum
;
3821 /* Enable scattered packets support for this queue if necessary. */
3822 assert(mb_len
>= RTE_PKTMBUF_HEADROOM
);
3823 if ((dev
->data
->dev_conf
.rxmode
.jumbo_frame
) &&
3824 (dev
->data
->dev_conf
.rxmode
.max_rx_pkt_len
>
3825 (mb_len
- RTE_PKTMBUF_HEADROOM
))) {
3827 desc
/= MLX4_PMD_SGE_WR_N
;
3829 DEBUG("%p: %s scattered packets support (%u WRs)",
3830 (void *)dev
, (tmpl
.sp
? "enabling" : "disabling"), desc
);
3831 /* Use the entire RX mempool as the memory region. */
3832 tmpl
.mr
= mlx4_mp2mr(priv
->pd
, mp
);
3833 if (tmpl
.mr
== NULL
) {
3835 ERROR("%p: MR creation failure: %s",
3836 (void *)dev
, strerror(ret
));
3840 attr
.rd
= (struct ibv_exp_res_domain_init_attr
){
3841 .comp_mask
= (IBV_EXP_RES_DOMAIN_THREAD_MODEL
|
3842 IBV_EXP_RES_DOMAIN_MSG_MODEL
),
3843 .thread_model
= IBV_EXP_THREAD_SINGLE
,
3844 .msg_model
= IBV_EXP_MSG_HIGH_BW
,
3846 tmpl
.rd
= ibv_exp_create_res_domain(priv
->ctx
, &attr
.rd
);
3847 if (tmpl
.rd
== NULL
) {
3849 ERROR("%p: RD creation failure: %s",
3850 (void *)dev
, strerror(ret
));
3853 attr
.cq
= (struct ibv_exp_cq_init_attr
){
3854 .comp_mask
= IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN
,
3855 .res_domain
= tmpl
.rd
,
3857 tmpl
.cq
= ibv_exp_create_cq(priv
->ctx
, desc
, NULL
, NULL
, 0, &attr
.cq
);
3858 if (tmpl
.cq
== NULL
) {
3860 ERROR("%p: CQ creation failure: %s",
3861 (void *)dev
, strerror(ret
));
3864 DEBUG("priv->device_attr.max_qp_wr is %d",
3865 priv
->device_attr
.max_qp_wr
);
3866 DEBUG("priv->device_attr.max_sge is %d",
3867 priv
->device_attr
.max_sge
);
3869 if (priv
->rss
&& !inactive
)
3870 tmpl
.qp
= rxq_setup_qp_rss(priv
, tmpl
.cq
, desc
, parent
,
3873 #endif /* RSS_SUPPORT */
3874 tmpl
.qp
= rxq_setup_qp(priv
, tmpl
.cq
, desc
, tmpl
.rd
);
3875 if (tmpl
.qp
== NULL
) {
3876 ret
= (errno
? errno
: EINVAL
);
3877 ERROR("%p: QP creation failure: %s",
3878 (void *)dev
, strerror(ret
));
3881 mod
= (struct ibv_exp_qp_attr
){
3882 /* Move the QP to this state. */
3883 .qp_state
= IBV_QPS_INIT
,
3884 /* Primary port number. */
3885 .port_num
= priv
->port
3887 ret
= ibv_exp_modify_qp(tmpl
.qp
, &mod
,
3890 (parent
? IBV_EXP_QP_GROUP_RSS
: 0) |
3891 #endif /* RSS_SUPPORT */
3894 ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
3895 (void *)dev
, strerror(ret
));
3898 if ((parent
) || (!priv
->rss
)) {
3899 /* Configure MAC and broadcast addresses. */
3900 ret
= rxq_mac_addrs_add(&tmpl
);
3902 ERROR("%p: QP flow attachment failed: %s",
3903 (void *)dev
, strerror(ret
));
3907 /* Allocate descriptors for RX queues, except for the RSS parent. */
3911 ret
= rxq_alloc_elts_sp(&tmpl
, desc
, NULL
);
3913 ret
= rxq_alloc_elts(&tmpl
, desc
, NULL
);
3915 ERROR("%p: RXQ allocation failed: %s",
3916 (void *)dev
, strerror(ret
));
3919 ret
= ibv_post_recv(tmpl
.qp
,
3921 &(*tmpl
.elts
.sp
)[0].wr
:
3922 &(*tmpl
.elts
.no_sp
)[0].wr
),
3925 ERROR("%p: ibv_post_recv() failed for WR %p: %s",
3932 mod
= (struct ibv_exp_qp_attr
){
3933 .qp_state
= IBV_QPS_RTR
3935 ret
= ibv_exp_modify_qp(tmpl
.qp
, &mod
, IBV_EXP_QP_STATE
);
3937 ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
3938 (void *)dev
, strerror(ret
));
3942 tmpl
.port_id
= dev
->data
->port_id
;
3943 DEBUG("%p: RTE port ID: %u", (void *)rxq
, tmpl
.port_id
);
3944 attr
.params
= (struct ibv_exp_query_intf_params
){
3945 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
3946 .intf
= IBV_EXP_INTF_CQ
,
3949 tmpl
.if_cq
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
3950 if (tmpl
.if_cq
== NULL
) {
3951 ERROR("%p: CQ interface family query failed with status %d",
3952 (void *)dev
, status
);
3955 attr
.params
= (struct ibv_exp_query_intf_params
){
3956 .intf_scope
= IBV_EXP_INTF_GLOBAL
,
3957 .intf
= IBV_EXP_INTF_QP_BURST
,
3960 tmpl
.if_qp
= ibv_exp_query_intf(priv
->ctx
, &attr
.params
, &status
);
3961 if (tmpl
.if_qp
== NULL
) {
3962 ERROR("%p: QP interface family query failed with status %d",
3963 (void *)dev
, status
);
3966 /* Clean up rxq in case we're reinitializing it. */
3967 DEBUG("%p: cleaning-up old rxq just in case", (void *)rxq
);
3970 DEBUG("%p: rxq updated with %p", (void *)rxq
, (void *)&tmpl
);
3980 * DPDK callback to configure a RX queue.
3983 * Pointer to Ethernet device structure.
3987 * Number of descriptors to configure in queue.
3989 * NUMA socket on which memory must be allocated.
3991 * Thresholds parameters.
3993 * Memory pool for buffer allocations.
3996 * 0 on success, negative errno value on failure.
3999 mlx4_rx_queue_setup(struct rte_eth_dev
*dev
, uint16_t idx
, uint16_t desc
,
4000 unsigned int socket
, const struct rte_eth_rxconf
*conf
,
4001 struct rte_mempool
*mp
)
4003 struct priv
*priv
= dev
->data
->dev_private
;
4004 struct rxq
*rxq
= (*priv
->rxqs
)[idx
];
4008 if (mlx4_is_secondary())
4009 return -E_RTE_SECONDARY
;
4011 DEBUG("%p: configuring queue %u for %u descriptors",
4012 (void *)dev
, idx
, desc
);
4013 if (idx
>= priv
->rxqs_n
) {
4014 ERROR("%p: queue index out of range (%u >= %u)",
4015 (void *)dev
, idx
, priv
->rxqs_n
);
4020 DEBUG("%p: reusing already allocated queue index %u (%p)",
4021 (void *)dev
, idx
, (void *)rxq
);
4022 if (priv
->started
) {
4026 (*priv
->rxqs
)[idx
] = NULL
;
4029 rxq
= rte_calloc_socket("RXQ", 1, sizeof(*rxq
), 0, socket
);
4031 ERROR("%p: unable to allocate queue index %u",
4037 if (idx
>= rte_align32pow2(priv
->rxqs_n
+ 1) >> 1)
4039 ret
= rxq_setup(dev
, rxq
, desc
, socket
, inactive
, conf
, mp
);
4043 rxq
->stats
.idx
= idx
;
4044 DEBUG("%p: adding RX queue %p to list",
4045 (void *)dev
, (void *)rxq
);
4046 (*priv
->rxqs
)[idx
] = rxq
;
4047 /* Update receive callback. */
4049 dev
->rx_pkt_burst
= mlx4_rx_burst_sp
;
4051 dev
->rx_pkt_burst
= mlx4_rx_burst
;
4058 * DPDK callback to release a RX queue.
4061 * Generic RX queue pointer.
4064 mlx4_rx_queue_release(void *dpdk_rxq
)
4066 struct rxq
*rxq
= (struct rxq
*)dpdk_rxq
;
4070 if (mlx4_is_secondary())
4076 assert(rxq
!= &priv
->rxq_parent
);
4077 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
4078 if ((*priv
->rxqs
)[i
] == rxq
) {
4079 DEBUG("%p: removing RX queue %p from list",
4080 (void *)priv
->dev
, (void *)rxq
);
4081 (*priv
->rxqs
)[i
] = NULL
;
4090 priv_dev_interrupt_handler_install(struct priv
*, struct rte_eth_dev
*);
4093 * DPDK callback to start the device.
4095 * Simulate device start by attaching all configured flows.
4098 * Pointer to Ethernet device structure.
4101 * 0 on success, negative errno value on failure.
4104 mlx4_dev_start(struct rte_eth_dev
*dev
)
4106 struct priv
*priv
= dev
->data
->dev_private
;
4111 if (mlx4_is_secondary())
4112 return -E_RTE_SECONDARY
;
4114 if (priv
->started
) {
4118 DEBUG("%p: attaching configured flows to all RX queues", (void *)dev
);
4121 rxq
= &priv
->rxq_parent
;
4124 rxq
= (*priv
->rxqs
)[0];
4127 /* Iterate only once when RSS is enabled. */
4131 /* Ignore nonexistent RX queues. */
4134 ret
= rxq_mac_addrs_add(rxq
);
4135 if (!ret
&& priv
->promisc
)
4136 ret
= rxq_promiscuous_enable(rxq
);
4137 if (!ret
&& priv
->allmulti
)
4138 ret
= rxq_allmulticast_enable(rxq
);
4141 WARN("%p: QP flow attachment failed: %s",
4142 (void *)dev
, strerror(ret
));
4145 rxq
= (*priv
->rxqs
)[--i
];
4147 rxq_allmulticast_disable(rxq
);
4148 rxq_promiscuous_disable(rxq
);
4149 rxq_mac_addrs_del(rxq
);
4155 } while ((--r
) && ((rxq
= (*priv
->rxqs
)[++i
]), i
));
4156 priv_dev_interrupt_handler_install(priv
, dev
);
4162 * DPDK callback to stop the device.
4164 * Simulate device stop by detaching all configured flows.
4167 * Pointer to Ethernet device structure.
4170 mlx4_dev_stop(struct rte_eth_dev
*dev
)
4172 struct priv
*priv
= dev
->data
->dev_private
;
4177 if (mlx4_is_secondary())
4180 if (!priv
->started
) {
4184 DEBUG("%p: detaching flows from all RX queues", (void *)dev
);
4187 rxq
= &priv
->rxq_parent
;
4190 rxq
= (*priv
->rxqs
)[0];
4193 /* Iterate only once when RSS is enabled. */
4195 /* Ignore nonexistent RX queues. */
4198 rxq_allmulticast_disable(rxq
);
4199 rxq_promiscuous_disable(rxq
);
4200 rxq_mac_addrs_del(rxq
);
4201 } while ((--r
) && ((rxq
= (*priv
->rxqs
)[++i
]), i
));
4206 * Dummy DPDK callback for TX.
4208 * This function is used to temporarily replace the real callback during
4209 * unsafe control operations on the queue, or in case of error.
4212 * Generic pointer to TX queue structure.
4214 * Packets to transmit.
4216 * Number of packets in array.
4219 * Number of packets successfully transmitted (<= pkts_n).
4222 removed_tx_burst(void *dpdk_txq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
4231 * Dummy DPDK callback for RX.
4233 * This function is used to temporarily replace the real callback during
4234 * unsafe control operations on the queue, or in case of error.
4237 * Generic pointer to RX queue structure.
4239 * Array to store received packets.
4241 * Maximum number of packets in array.
4244 * Number of packets successfully received (<= pkts_n).
4247 removed_rx_burst(void *dpdk_rxq
, struct rte_mbuf
**pkts
, uint16_t pkts_n
)
4256 priv_dev_interrupt_handler_uninstall(struct priv
*, struct rte_eth_dev
*);
4259 * DPDK callback to close the device.
4261 * Destroy all queues and objects, free memory.
4264 * Pointer to Ethernet device structure.
4267 mlx4_dev_close(struct rte_eth_dev
*dev
)
4269 struct priv
*priv
= mlx4_get_priv(dev
);
4276 DEBUG("%p: closing device \"%s\"",
4278 ((priv
->ctx
!= NULL
) ? priv
->ctx
->device
->name
: ""));
4279 /* Prevent crashes when queues are still in use. This is unfortunately
4280 * still required for DPDK 1.3 because some programs (such as testpmd)
4281 * never release them before closing the device. */
4282 dev
->rx_pkt_burst
= removed_rx_burst
;
4283 dev
->tx_pkt_burst
= removed_tx_burst
;
4284 if (priv
->rxqs
!= NULL
) {
4285 /* XXX race condition if mlx4_rx_burst() is still running. */
4287 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4288 tmp
= (*priv
->rxqs
)[i
];
4291 (*priv
->rxqs
)[i
] = NULL
;
4298 if (priv
->txqs
!= NULL
) {
4299 /* XXX race condition if mlx4_tx_burst() is still running. */
4301 for (i
= 0; (i
!= priv
->txqs_n
); ++i
) {
4302 tmp
= (*priv
->txqs
)[i
];
4305 (*priv
->txqs
)[i
] = NULL
;
4313 rxq_cleanup(&priv
->rxq_parent
);
4314 if (priv
->pd
!= NULL
) {
4315 assert(priv
->ctx
!= NULL
);
4316 claim_zero(ibv_dealloc_pd(priv
->pd
));
4317 claim_zero(ibv_close_device(priv
->ctx
));
4319 assert(priv
->ctx
== NULL
);
4320 priv_dev_interrupt_handler_uninstall(priv
, dev
);
4322 memset(priv
, 0, sizeof(*priv
));
4326 * Change the link state (UP / DOWN).
4329 * Pointer to Ethernet device private data.
4331 * Nonzero for link up, otherwise link down.
4334 * 0 on success, errno value on failure.
4337 priv_set_link(struct priv
*priv
, int up
)
4339 struct rte_eth_dev
*dev
= priv
->dev
;
4344 err
= priv_set_flags(priv
, ~IFF_UP
, IFF_UP
);
4347 for (i
= 0; i
< priv
->rxqs_n
; i
++)
4348 if ((*priv
->rxqs
)[i
]->sp
)
4350 /* Check if an sp queue exists.
4351 * Note: Some old frames might be received.
4353 if (i
== priv
->rxqs_n
)
4354 dev
->rx_pkt_burst
= mlx4_rx_burst
;
4356 dev
->rx_pkt_burst
= mlx4_rx_burst_sp
;
4357 dev
->tx_pkt_burst
= mlx4_tx_burst
;
4359 err
= priv_set_flags(priv
, ~IFF_UP
, ~IFF_UP
);
4362 dev
->rx_pkt_burst
= removed_rx_burst
;
4363 dev
->tx_pkt_burst
= removed_tx_burst
;
4369 * DPDK callback to bring the link DOWN.
4372 * Pointer to Ethernet device structure.
4375 * 0 on success, errno value on failure.
4378 mlx4_set_link_down(struct rte_eth_dev
*dev
)
4380 struct priv
*priv
= dev
->data
->dev_private
;
4384 err
= priv_set_link(priv
, 0);
4390 * DPDK callback to bring the link UP.
4393 * Pointer to Ethernet device structure.
4396 * 0 on success, errno value on failure.
4399 mlx4_set_link_up(struct rte_eth_dev
*dev
)
4401 struct priv
*priv
= dev
->data
->dev_private
;
4405 err
= priv_set_link(priv
, 1);
4410 * DPDK callback to get information about the device.
4413 * Pointer to Ethernet device structure.
4415 * Info structure output buffer.
4418 mlx4_dev_infos_get(struct rte_eth_dev
*dev
, struct rte_eth_dev_info
*info
)
4420 struct priv
*priv
= mlx4_get_priv(dev
);
4422 char ifname
[IF_NAMESIZE
];
4427 /* FIXME: we should ask the device for these values. */
4428 info
->min_rx_bufsize
= 32;
4429 info
->max_rx_pktlen
= 65536;
4431 * Since we need one CQ per QP, the limit is the minimum number
4432 * between the two values.
4434 max
= ((priv
->device_attr
.max_cq
> priv
->device_attr
.max_qp
) ?
4435 priv
->device_attr
.max_qp
: priv
->device_attr
.max_cq
);
4436 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
4439 info
->max_rx_queues
= max
;
4440 info
->max_tx_queues
= max
;
4441 /* Last array entry is reserved for broadcast. */
4442 info
->max_mac_addrs
= (elemof(priv
->mac
) - 1);
4443 info
->rx_offload_capa
=
4445 (DEV_RX_OFFLOAD_IPV4_CKSUM
|
4446 DEV_RX_OFFLOAD_UDP_CKSUM
|
4447 DEV_RX_OFFLOAD_TCP_CKSUM
) :
4449 info
->tx_offload_capa
=
4451 (DEV_TX_OFFLOAD_IPV4_CKSUM
|
4452 DEV_TX_OFFLOAD_UDP_CKSUM
|
4453 DEV_TX_OFFLOAD_TCP_CKSUM
) :
4455 if (priv_get_ifname(priv
, &ifname
) == 0)
4456 info
->if_index
= if_nametoindex(ifname
);
4459 ETH_LINK_SPEED_10G
|
4460 ETH_LINK_SPEED_20G
|
4461 ETH_LINK_SPEED_40G
|
4466 static const uint32_t *
4467 mlx4_dev_supported_ptypes_get(struct rte_eth_dev
*dev
)
4469 static const uint32_t ptypes
[] = {
4470 /* refers to rxq_cq_to_pkt_type() */
4473 RTE_PTYPE_INNER_L3_IPV4
,
4474 RTE_PTYPE_INNER_L3_IPV6
,
4478 if (dev
->rx_pkt_burst
== mlx4_rx_burst
||
4479 dev
->rx_pkt_burst
== mlx4_rx_burst_sp
)
4485 * DPDK callback to get device statistics.
4488 * Pointer to Ethernet device structure.
4490 * Stats structure output buffer.
4493 mlx4_stats_get(struct rte_eth_dev
*dev
, struct rte_eth_stats
*stats
)
4495 struct priv
*priv
= mlx4_get_priv(dev
);
4496 struct rte_eth_stats tmp
= {0};
4503 /* Add software counters. */
4504 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4505 struct rxq
*rxq
= (*priv
->rxqs
)[i
];
4509 idx
= rxq
->stats
.idx
;
4510 if (idx
< RTE_ETHDEV_QUEUE_STAT_CNTRS
) {
4511 #ifdef MLX4_PMD_SOFT_COUNTERS
4512 tmp
.q_ipackets
[idx
] += rxq
->stats
.ipackets
;
4513 tmp
.q_ibytes
[idx
] += rxq
->stats
.ibytes
;
4515 tmp
.q_errors
[idx
] += (rxq
->stats
.idropped
+
4516 rxq
->stats
.rx_nombuf
);
4518 #ifdef MLX4_PMD_SOFT_COUNTERS
4519 tmp
.ipackets
+= rxq
->stats
.ipackets
;
4520 tmp
.ibytes
+= rxq
->stats
.ibytes
;
4522 tmp
.ierrors
+= rxq
->stats
.idropped
;
4523 tmp
.rx_nombuf
+= rxq
->stats
.rx_nombuf
;
4525 for (i
= 0; (i
!= priv
->txqs_n
); ++i
) {
4526 struct txq
*txq
= (*priv
->txqs
)[i
];
4530 idx
= txq
->stats
.idx
;
4531 if (idx
< RTE_ETHDEV_QUEUE_STAT_CNTRS
) {
4532 #ifdef MLX4_PMD_SOFT_COUNTERS
4533 tmp
.q_opackets
[idx
] += txq
->stats
.opackets
;
4534 tmp
.q_obytes
[idx
] += txq
->stats
.obytes
;
4536 tmp
.q_errors
[idx
] += txq
->stats
.odropped
;
4538 #ifdef MLX4_PMD_SOFT_COUNTERS
4539 tmp
.opackets
+= txq
->stats
.opackets
;
4540 tmp
.obytes
+= txq
->stats
.obytes
;
4542 tmp
.oerrors
+= txq
->stats
.odropped
;
4544 #ifndef MLX4_PMD_SOFT_COUNTERS
4545 /* FIXME: retrieve and add hardware counters. */
4552 * DPDK callback to clear device statistics.
4555 * Pointer to Ethernet device structure.
4558 mlx4_stats_reset(struct rte_eth_dev
*dev
)
4560 struct priv
*priv
= mlx4_get_priv(dev
);
4567 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4568 if ((*priv
->rxqs
)[i
] == NULL
)
4570 idx
= (*priv
->rxqs
)[i
]->stats
.idx
;
4571 (*priv
->rxqs
)[i
]->stats
=
4572 (struct mlx4_rxq_stats
){ .idx
= idx
};
4574 for (i
= 0; (i
!= priv
->txqs_n
); ++i
) {
4575 if ((*priv
->txqs
)[i
] == NULL
)
4577 idx
= (*priv
->txqs
)[i
]->stats
.idx
;
4578 (*priv
->txqs
)[i
]->stats
=
4579 (struct mlx4_txq_stats
){ .idx
= idx
};
4581 #ifndef MLX4_PMD_SOFT_COUNTERS
4582 /* FIXME: reset hardware counters. */
4588 * DPDK callback to remove a MAC address.
4591 * Pointer to Ethernet device structure.
4593 * MAC address index.
4596 mlx4_mac_addr_remove(struct rte_eth_dev
*dev
, uint32_t index
)
4598 struct priv
*priv
= dev
->data
->dev_private
;
4600 if (mlx4_is_secondary())
4603 DEBUG("%p: removing MAC address from index %" PRIu32
,
4604 (void *)dev
, index
);
4605 /* Last array entry is reserved for broadcast. */
4606 if (index
>= (elemof(priv
->mac
) - 1))
4608 priv_mac_addr_del(priv
, index
);
4614 * DPDK callback to add a MAC address.
4617 * Pointer to Ethernet device structure.
4619 * MAC address to register.
4621 * MAC address index.
4623 * VMDq pool index to associate address with (ignored).
4626 mlx4_mac_addr_add(struct rte_eth_dev
*dev
, struct ether_addr
*mac_addr
,
4627 uint32_t index
, uint32_t vmdq
)
4629 struct priv
*priv
= dev
->data
->dev_private
;
4631 if (mlx4_is_secondary())
4635 DEBUG("%p: adding MAC address at index %" PRIu32
,
4636 (void *)dev
, index
);
4637 /* Last array entry is reserved for broadcast. */
4638 if (index
>= (elemof(priv
->mac
) - 1))
4640 priv_mac_addr_add(priv
, index
,
4641 (const uint8_t (*)[ETHER_ADDR_LEN
])
4642 mac_addr
->addr_bytes
);
4648 * DPDK callback to set the primary MAC address.
4651 * Pointer to Ethernet device structure.
4653 * MAC address to register.
4656 mlx4_mac_addr_set(struct rte_eth_dev
*dev
, struct ether_addr
*mac_addr
)
4658 DEBUG("%p: setting primary MAC address", (void *)dev
);
4659 mlx4_mac_addr_remove(dev
, 0);
4660 mlx4_mac_addr_add(dev
, mac_addr
, 0, 0);
4664 * DPDK callback to enable promiscuous mode.
4667 * Pointer to Ethernet device structure.
4670 mlx4_promiscuous_enable(struct rte_eth_dev
*dev
)
4672 struct priv
*priv
= dev
->data
->dev_private
;
4676 if (mlx4_is_secondary())
4679 if (priv
->promisc
) {
4683 /* If device isn't started, this is all we need to do. */
4687 ret
= rxq_promiscuous_enable(&priv
->rxq_parent
);
4694 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4695 if ((*priv
->rxqs
)[i
] == NULL
)
4697 ret
= rxq_promiscuous_enable((*priv
->rxqs
)[i
]);
4700 /* Failure, rollback. */
4702 if ((*priv
->rxqs
)[--i
] != NULL
)
4703 rxq_promiscuous_disable((*priv
->rxqs
)[i
]);
4713 * DPDK callback to disable promiscuous mode.
4716 * Pointer to Ethernet device structure.
4719 mlx4_promiscuous_disable(struct rte_eth_dev
*dev
)
4721 struct priv
*priv
= dev
->data
->dev_private
;
4724 if (mlx4_is_secondary())
4727 if (!priv
->promisc
) {
4732 rxq_promiscuous_disable(&priv
->rxq_parent
);
4735 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
4736 if ((*priv
->rxqs
)[i
] != NULL
)
4737 rxq_promiscuous_disable((*priv
->rxqs
)[i
]);
4744 * DPDK callback to enable allmulti mode.
4747 * Pointer to Ethernet device structure.
4750 mlx4_allmulticast_enable(struct rte_eth_dev
*dev
)
4752 struct priv
*priv
= dev
->data
->dev_private
;
4756 if (mlx4_is_secondary())
4759 if (priv
->allmulti
) {
4763 /* If device isn't started, this is all we need to do. */
4767 ret
= rxq_allmulticast_enable(&priv
->rxq_parent
);
4774 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4775 if ((*priv
->rxqs
)[i
] == NULL
)
4777 ret
= rxq_allmulticast_enable((*priv
->rxqs
)[i
]);
4780 /* Failure, rollback. */
4782 if ((*priv
->rxqs
)[--i
] != NULL
)
4783 rxq_allmulticast_disable((*priv
->rxqs
)[i
]);
4793 * DPDK callback to disable allmulti mode.
4796 * Pointer to Ethernet device structure.
4799 mlx4_allmulticast_disable(struct rte_eth_dev
*dev
)
4801 struct priv
*priv
= dev
->data
->dev_private
;
4804 if (mlx4_is_secondary())
4807 if (!priv
->allmulti
) {
4812 rxq_allmulticast_disable(&priv
->rxq_parent
);
4815 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
4816 if ((*priv
->rxqs
)[i
] != NULL
)
4817 rxq_allmulticast_disable((*priv
->rxqs
)[i
]);
4824 * DPDK callback to retrieve physical link information (unlocked version).
4827 * Pointer to Ethernet device structure.
4828 * @param wait_to_complete
4829 * Wait for request completion (ignored).
4832 mlx4_link_update_unlocked(struct rte_eth_dev
*dev
, int wait_to_complete
)
4834 struct priv
*priv
= mlx4_get_priv(dev
);
4835 struct ethtool_cmd edata
= {
4839 struct rte_eth_link dev_link
;
4844 (void)wait_to_complete
;
4845 if (priv_ifreq(priv
, SIOCGIFFLAGS
, &ifr
)) {
4846 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno
));
4849 memset(&dev_link
, 0, sizeof(dev_link
));
4850 dev_link
.link_status
= ((ifr
.ifr_flags
& IFF_UP
) &&
4851 (ifr
.ifr_flags
& IFF_RUNNING
));
4852 ifr
.ifr_data
= (void *)&edata
;
4853 if (priv_ifreq(priv
, SIOCETHTOOL
, &ifr
)) {
4854 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
4858 link_speed
= ethtool_cmd_speed(&edata
);
4859 if (link_speed
== -1)
4860 dev_link
.link_speed
= 0;
4862 dev_link
.link_speed
= link_speed
;
4863 dev_link
.link_duplex
= ((edata
.duplex
== DUPLEX_HALF
) ?
4864 ETH_LINK_HALF_DUPLEX
: ETH_LINK_FULL_DUPLEX
);
4865 dev_link
.link_autoneg
= !(dev
->data
->dev_conf
.link_speeds
&
4866 ETH_LINK_SPEED_FIXED
);
4867 if (memcmp(&dev_link
, &dev
->data
->dev_link
, sizeof(dev_link
))) {
4868 /* Link status changed. */
4869 dev
->data
->dev_link
= dev_link
;
4872 /* Link status is still the same. */
4877 * DPDK callback to retrieve physical link information.
4880 * Pointer to Ethernet device structure.
4881 * @param wait_to_complete
4882 * Wait for request completion (ignored).
4885 mlx4_link_update(struct rte_eth_dev
*dev
, int wait_to_complete
)
4887 struct priv
*priv
= mlx4_get_priv(dev
);
4893 ret
= mlx4_link_update_unlocked(dev
, wait_to_complete
);
4899 * DPDK callback to change the MTU.
4901 * Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
4902 * received). Use this as a hint to enable/disable scattered packets support
4903 * and improve performance when not needed.
4904 * Since failure is not an option, reconfiguring queues on the fly is not
4908 * Pointer to Ethernet device structure.
4913 * 0 on success, negative errno value on failure.
4916 mlx4_dev_set_mtu(struct rte_eth_dev
*dev
, uint16_t mtu
)
4918 struct priv
*priv
= dev
->data
->dev_private
;
4921 uint16_t (*rx_func
)(void *, struct rte_mbuf
**, uint16_t) =
4924 if (mlx4_is_secondary())
4925 return -E_RTE_SECONDARY
;
4927 /* Set kernel interface MTU first. */
4928 if (priv_set_mtu(priv
, mtu
)) {
4930 WARN("cannot set port %u MTU to %u: %s", priv
->port
, mtu
,
4934 DEBUG("adapter port %u MTU set to %u", priv
->port
, mtu
);
4936 /* Temporarily replace RX handler with a fake one, assuming it has not
4937 * been copied elsewhere. */
4938 dev
->rx_pkt_burst
= removed_rx_burst
;
4939 /* Make sure everyone has left mlx4_rx_burst() and uses
4940 * removed_rx_burst() instead. */
4943 /* Reconfigure each RX queue. */
4944 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
4945 struct rxq
*rxq
= (*priv
->rxqs
)[i
];
4946 unsigned int mb_len
;
4947 unsigned int max_frame_len
;
4952 /* Calculate new maximum frame length according to MTU and
4953 * toggle scattered support (sp) if necessary. */
4954 max_frame_len
= (priv
->mtu
+ ETHER_HDR_LEN
+
4955 (ETHER_MAX_VLAN_FRAME_LEN
- ETHER_MAX_LEN
));
4956 mb_len
= rte_pktmbuf_data_room_size(rxq
->mp
);
4957 assert(mb_len
>= RTE_PKTMBUF_HEADROOM
);
4958 sp
= (max_frame_len
> (mb_len
- RTE_PKTMBUF_HEADROOM
));
4959 /* Provide new values to rxq_setup(). */
4960 dev
->data
->dev_conf
.rxmode
.jumbo_frame
= sp
;
4961 dev
->data
->dev_conf
.rxmode
.max_rx_pkt_len
= max_frame_len
;
4962 ret
= rxq_rehash(dev
, rxq
);
4964 /* Force SP RX if that queue requires it and abort. */
4966 rx_func
= mlx4_rx_burst_sp
;
4969 /* Reenable non-RSS queue attributes. No need to check
4970 * for errors at this stage. */
4972 rxq_mac_addrs_add(rxq
);
4974 rxq_promiscuous_enable(rxq
);
4976 rxq_allmulticast_enable(rxq
);
4978 /* Scattered burst function takes priority. */
4980 rx_func
= mlx4_rx_burst_sp
;
4982 /* Burst functions can now be called again. */
4984 dev
->rx_pkt_burst
= rx_func
;
4992 * DPDK callback to get flow control status.
4995 * Pointer to Ethernet device structure.
4996 * @param[out] fc_conf
4997 * Flow control output buffer.
5000 * 0 on success, negative errno value on failure.
5003 mlx4_dev_get_flow_ctrl(struct rte_eth_dev
*dev
, struct rte_eth_fc_conf
*fc_conf
)
5005 struct priv
*priv
= dev
->data
->dev_private
;
5007 struct ethtool_pauseparam ethpause
= {
5008 .cmd
= ETHTOOL_GPAUSEPARAM
5012 if (mlx4_is_secondary())
5013 return -E_RTE_SECONDARY
;
5014 ifr
.ifr_data
= (void *)ðpause
;
5016 if (priv_ifreq(priv
, SIOCETHTOOL
, &ifr
)) {
5018 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
5024 fc_conf
->autoneg
= ethpause
.autoneg
;
5025 if (ethpause
.rx_pause
&& ethpause
.tx_pause
)
5026 fc_conf
->mode
= RTE_FC_FULL
;
5027 else if (ethpause
.rx_pause
)
5028 fc_conf
->mode
= RTE_FC_RX_PAUSE
;
5029 else if (ethpause
.tx_pause
)
5030 fc_conf
->mode
= RTE_FC_TX_PAUSE
;
5032 fc_conf
->mode
= RTE_FC_NONE
;
5042 * DPDK callback to modify flow control parameters.
5045 * Pointer to Ethernet device structure.
5046 * @param[in] fc_conf
5047 * Flow control parameters.
5050 * 0 on success, negative errno value on failure.
5053 mlx4_dev_set_flow_ctrl(struct rte_eth_dev
*dev
, struct rte_eth_fc_conf
*fc_conf
)
5055 struct priv
*priv
= dev
->data
->dev_private
;
5057 struct ethtool_pauseparam ethpause
= {
5058 .cmd
= ETHTOOL_SPAUSEPARAM
5062 if (mlx4_is_secondary())
5063 return -E_RTE_SECONDARY
;
5064 ifr
.ifr_data
= (void *)ðpause
;
5065 ethpause
.autoneg
= fc_conf
->autoneg
;
5066 if (((fc_conf
->mode
& RTE_FC_FULL
) == RTE_FC_FULL
) ||
5067 (fc_conf
->mode
& RTE_FC_RX_PAUSE
))
5068 ethpause
.rx_pause
= 1;
5070 ethpause
.rx_pause
= 0;
5072 if (((fc_conf
->mode
& RTE_FC_FULL
) == RTE_FC_FULL
) ||
5073 (fc_conf
->mode
& RTE_FC_TX_PAUSE
))
5074 ethpause
.tx_pause
= 1;
5076 ethpause
.tx_pause
= 0;
5079 if (priv_ifreq(priv
, SIOCETHTOOL
, &ifr
)) {
5081 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
5095 * Configure a VLAN filter.
5098 * Pointer to Ethernet device structure.
5100 * VLAN ID to filter.
5105 * 0 on success, errno value on failure.
5108 vlan_filter_set(struct rte_eth_dev
*dev
, uint16_t vlan_id
, int on
)
5110 struct priv
*priv
= dev
->data
->dev_private
;
5112 unsigned int j
= -1;
5114 DEBUG("%p: %s VLAN filter ID %" PRIu16
,
5115 (void *)dev
, (on
? "enable" : "disable"), vlan_id
);
5116 for (i
= 0; (i
!= elemof(priv
->vlan_filter
)); ++i
) {
5117 if (!priv
->vlan_filter
[i
].enabled
) {
5118 /* Unused index, remember it. */
5122 if (priv
->vlan_filter
[i
].id
!= vlan_id
)
5124 /* This VLAN ID is already known, use its index. */
5128 /* Check if there's room for another VLAN filter. */
5129 if (j
== (unsigned int)-1)
5132 * VLAN filters apply to all configured MAC addresses, flow
5133 * specifications must be reconfigured accordingly.
5135 priv
->vlan_filter
[j
].id
= vlan_id
;
5136 if ((on
) && (!priv
->vlan_filter
[j
].enabled
)) {
5138 * Filter is disabled, enable it.
5139 * Rehashing flows in all RX queues is necessary.
5142 rxq_mac_addrs_del(&priv
->rxq_parent
);
5144 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
5145 if ((*priv
->rxqs
)[i
] != NULL
)
5146 rxq_mac_addrs_del((*priv
->rxqs
)[i
]);
5147 priv
->vlan_filter
[j
].enabled
= 1;
5148 if (priv
->started
) {
5150 rxq_mac_addrs_add(&priv
->rxq_parent
);
5152 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
5153 if ((*priv
->rxqs
)[i
] == NULL
)
5155 rxq_mac_addrs_add((*priv
->rxqs
)[i
]);
5158 } else if ((!on
) && (priv
->vlan_filter
[j
].enabled
)) {
5160 * Filter is enabled, disable it.
5161 * Rehashing flows in all RX queues is necessary.
5164 rxq_mac_addrs_del(&priv
->rxq_parent
);
5166 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
)
5167 if ((*priv
->rxqs
)[i
] != NULL
)
5168 rxq_mac_addrs_del((*priv
->rxqs
)[i
]);
5169 priv
->vlan_filter
[j
].enabled
= 0;
5170 if (priv
->started
) {
5172 rxq_mac_addrs_add(&priv
->rxq_parent
);
5174 for (i
= 0; (i
!= priv
->rxqs_n
); ++i
) {
5175 if ((*priv
->rxqs
)[i
] == NULL
)
5177 rxq_mac_addrs_add((*priv
->rxqs
)[i
]);
5185 * DPDK callback to configure a VLAN filter.
5188 * Pointer to Ethernet device structure.
5190 * VLAN ID to filter.
5195 * 0 on success, negative errno value on failure.
5198 mlx4_vlan_filter_set(struct rte_eth_dev
*dev
, uint16_t vlan_id
, int on
)
5200 struct priv
*priv
= dev
->data
->dev_private
;
5203 if (mlx4_is_secondary())
5204 return -E_RTE_SECONDARY
;
5206 ret
= vlan_filter_set(dev
, vlan_id
, on
);
5212 static const struct eth_dev_ops mlx4_dev_ops
= {
5213 .dev_configure
= mlx4_dev_configure
,
5214 .dev_start
= mlx4_dev_start
,
5215 .dev_stop
= mlx4_dev_stop
,
5216 .dev_set_link_down
= mlx4_set_link_down
,
5217 .dev_set_link_up
= mlx4_set_link_up
,
5218 .dev_close
= mlx4_dev_close
,
5219 .promiscuous_enable
= mlx4_promiscuous_enable
,
5220 .promiscuous_disable
= mlx4_promiscuous_disable
,
5221 .allmulticast_enable
= mlx4_allmulticast_enable
,
5222 .allmulticast_disable
= mlx4_allmulticast_disable
,
5223 .link_update
= mlx4_link_update
,
5224 .stats_get
= mlx4_stats_get
,
5225 .stats_reset
= mlx4_stats_reset
,
5226 .queue_stats_mapping_set
= NULL
,
5227 .dev_infos_get
= mlx4_dev_infos_get
,
5228 .dev_supported_ptypes_get
= mlx4_dev_supported_ptypes_get
,
5229 .vlan_filter_set
= mlx4_vlan_filter_set
,
5230 .vlan_tpid_set
= NULL
,
5231 .vlan_strip_queue_set
= NULL
,
5232 .vlan_offload_set
= NULL
,
5233 .rx_queue_setup
= mlx4_rx_queue_setup
,
5234 .tx_queue_setup
= mlx4_tx_queue_setup
,
5235 .rx_queue_release
= mlx4_rx_queue_release
,
5236 .tx_queue_release
= mlx4_tx_queue_release
,
5238 .dev_led_off
= NULL
,
5239 .flow_ctrl_get
= mlx4_dev_get_flow_ctrl
,
5240 .flow_ctrl_set
= mlx4_dev_set_flow_ctrl
,
5241 .priority_flow_ctrl_set
= NULL
,
5242 .mac_addr_remove
= mlx4_mac_addr_remove
,
5243 .mac_addr_add
= mlx4_mac_addr_add
,
5244 .mac_addr_set
= mlx4_mac_addr_set
,
5245 .mtu_set
= mlx4_dev_set_mtu
,
5249 * Get PCI information from struct ibv_device.
5252 * Pointer to Ethernet device structure.
5253 * @param[out] pci_addr
5254 * PCI bus address output buffer.
5257 * 0 on success, -1 on failure and errno is set.
5260 mlx4_ibv_device_to_pci_addr(const struct ibv_device
*device
,
5261 struct rte_pci_addr
*pci_addr
)
5265 MKSTR(path
, "%s/device/uevent", device
->ibdev_path
);
5267 file
= fopen(path
, "rb");
5270 while (fgets(line
, sizeof(line
), file
) == line
) {
5271 size_t len
= strlen(line
);
5274 /* Truncate long lines. */
5275 if (len
== (sizeof(line
) - 1))
5276 while (line
[(len
- 1)] != '\n') {
5280 line
[(len
- 1)] = ret
;
5282 /* Extract information. */
5285 "%" SCNx16
":%" SCNx8
":%" SCNx8
".%" SCNx8
"\n",
5289 &pci_addr
->function
) == 4) {
5299 * Get MAC address by querying netdevice.
5302 * struct priv for the requested device.
5304 * MAC address output buffer.
5307 * 0 on success, -1 on failure and errno is set.
5310 priv_get_mac(struct priv
*priv
, uint8_t (*mac
)[ETHER_ADDR_LEN
])
5312 struct ifreq request
;
5314 if (priv_ifreq(priv
, SIOCGIFHWADDR
, &request
))
5316 memcpy(mac
, request
.ifr_hwaddr
.sa_data
, ETHER_ADDR_LEN
);
5320 /* Support up to 32 adapters. */
5322 struct rte_pci_addr pci_addr
; /* associated PCI address */
5323 uint32_t ports
; /* physical ports bitfield. */
5327 * Get device index in mlx4_dev[] from PCI bus address.
5329 * @param[in] pci_addr
5330 * PCI bus address to look for.
5333 * mlx4_dev[] index on success, -1 on failure.
5336 mlx4_dev_idx(struct rte_pci_addr
*pci_addr
)
5341 assert(pci_addr
!= NULL
);
5342 for (i
= 0; (i
!= elemof(mlx4_dev
)); ++i
) {
5343 if ((mlx4_dev
[i
].pci_addr
.domain
== pci_addr
->domain
) &&
5344 (mlx4_dev
[i
].pci_addr
.bus
== pci_addr
->bus
) &&
5345 (mlx4_dev
[i
].pci_addr
.devid
== pci_addr
->devid
) &&
5346 (mlx4_dev
[i
].pci_addr
.function
== pci_addr
->function
))
5348 if ((mlx4_dev
[i
].ports
== 0) && (ret
== -1))
5355 * Retrieve integer value from environment variable.
5358 * Environment variable name.
5361 * Integer value, 0 if the variable is not set.
5364 mlx4_getenv_int(const char *name
)
5366 const char *val
= getenv(name
);
5374 mlx4_dev_link_status_handler(void *);
5376 mlx4_dev_interrupt_handler(struct rte_intr_handle
*, void *);
5379 * Link status handler.
5382 * Pointer to private structure.
5384 * Pointer to the rte_eth_dev structure.
5387 * Nonzero if the callback process can be called immediately.
5390 priv_dev_link_status_handler(struct priv
*priv
, struct rte_eth_dev
*dev
)
5392 struct ibv_async_event event
;
5393 int port_change
= 0;
5396 /* Read all message and acknowledge them. */
5398 if (ibv_get_async_event(priv
->ctx
, &event
))
5401 if (event
.event_type
== IBV_EVENT_PORT_ACTIVE
||
5402 event
.event_type
== IBV_EVENT_PORT_ERR
)
5405 DEBUG("event type %d on port %d not handled",
5406 event
.event_type
, event
.element
.port_num
);
5407 ibv_ack_async_event(&event
);
5410 if (port_change
^ priv
->pending_alarm
) {
5411 struct rte_eth_link
*link
= &dev
->data
->dev_link
;
5413 priv
->pending_alarm
= 0;
5414 mlx4_link_update_unlocked(dev
, 0);
5415 if (((link
->link_speed
== 0) && link
->link_status
) ||
5416 ((link
->link_speed
!= 0) && !link
->link_status
)) {
5417 /* Inconsistent status, check again later. */
5418 priv
->pending_alarm
= 1;
5419 rte_eal_alarm_set(MLX4_ALARM_TIMEOUT_US
,
5420 mlx4_dev_link_status_handler
,
5429 * Handle delayed link status event.
5432 * Registered argument.
5435 mlx4_dev_link_status_handler(void *arg
)
5437 struct rte_eth_dev
*dev
= arg
;
5438 struct priv
*priv
= dev
->data
->dev_private
;
5442 assert(priv
->pending_alarm
== 1);
5443 ret
= priv_dev_link_status_handler(priv
, dev
);
5446 _rte_eth_dev_callback_process(dev
, RTE_ETH_EVENT_INTR_LSC
, NULL
);
5450 * Handle interrupts from the NIC.
5452 * @param[in] intr_handle
5453 * Interrupt handler.
5455 * Callback argument.
5458 mlx4_dev_interrupt_handler(struct rte_intr_handle
*intr_handle
, void *cb_arg
)
5460 struct rte_eth_dev
*dev
= cb_arg
;
5461 struct priv
*priv
= dev
->data
->dev_private
;
5466 ret
= priv_dev_link_status_handler(priv
, dev
);
5469 _rte_eth_dev_callback_process(dev
, RTE_ETH_EVENT_INTR_LSC
, NULL
);
5473 * Uninstall interrupt handler.
5476 * Pointer to private structure.
5478 * Pointer to the rte_eth_dev structure.
5481 priv_dev_interrupt_handler_uninstall(struct priv
*priv
, struct rte_eth_dev
*dev
)
5483 if (!dev
->data
->dev_conf
.intr_conf
.lsc
)
5485 rte_intr_callback_unregister(&priv
->intr_handle
,
5486 mlx4_dev_interrupt_handler
,
5488 if (priv
->pending_alarm
)
5489 rte_eal_alarm_cancel(mlx4_dev_link_status_handler
, dev
);
5490 priv
->pending_alarm
= 0;
5491 priv
->intr_handle
.fd
= 0;
5492 priv
->intr_handle
.type
= RTE_INTR_HANDLE_UNKNOWN
;
5496 * Install interrupt handler.
5499 * Pointer to private structure.
5501 * Pointer to the rte_eth_dev structure.
5504 priv_dev_interrupt_handler_install(struct priv
*priv
, struct rte_eth_dev
*dev
)
5508 if (!dev
->data
->dev_conf
.intr_conf
.lsc
)
5510 assert(priv
->ctx
->async_fd
> 0);
5511 flags
= fcntl(priv
->ctx
->async_fd
, F_GETFL
);
5512 rc
= fcntl(priv
->ctx
->async_fd
, F_SETFL
, flags
| O_NONBLOCK
);
5514 INFO("failed to change file descriptor async event queue");
5515 dev
->data
->dev_conf
.intr_conf
.lsc
= 0;
5517 priv
->intr_handle
.fd
= priv
->ctx
->async_fd
;
5518 priv
->intr_handle
.type
= RTE_INTR_HANDLE_EXT
;
5519 rte_intr_callback_register(&priv
->intr_handle
,
5520 mlx4_dev_interrupt_handler
,
5525 static struct eth_driver mlx4_driver
;
5528 * DPDK callback to register a PCI device.
5530 * This function creates an Ethernet device for each port of a given
5533 * @param[in] pci_drv
5534 * PCI driver structure (mlx4_driver).
5535 * @param[in] pci_dev
5536 * PCI device information.
5539 * 0 on success, negative errno value on failure.
5542 mlx4_pci_probe(struct rte_pci_driver
*pci_drv
, struct rte_pci_device
*pci_dev
)
5544 struct ibv_device
**list
;
5545 struct ibv_device
*ibv_dev
;
5547 struct ibv_context
*attr_ctx
= NULL
;
5548 struct ibv_device_attr device_attr
;
5554 assert(pci_drv
== &mlx4_driver
.pci_drv
);
5555 /* Get mlx4_dev[] index. */
5556 idx
= mlx4_dev_idx(&pci_dev
->addr
);
5558 ERROR("this driver cannot support any more adapters");
5561 DEBUG("using driver device index %d", idx
);
5563 /* Save PCI address. */
5564 mlx4_dev
[idx
].pci_addr
= pci_dev
->addr
;
5565 list
= ibv_get_device_list(&i
);
5568 if (errno
== ENOSYS
) {
5569 WARN("cannot list devices, is ib_uverbs loaded?");
5576 * For each listed device, check related sysfs entry against
5577 * the provided PCI ID.
5580 struct rte_pci_addr pci_addr
;
5583 DEBUG("checking device \"%s\"", list
[i
]->name
);
5584 if (mlx4_ibv_device_to_pci_addr(list
[i
], &pci_addr
))
5586 if ((pci_dev
->addr
.domain
!= pci_addr
.domain
) ||
5587 (pci_dev
->addr
.bus
!= pci_addr
.bus
) ||
5588 (pci_dev
->addr
.devid
!= pci_addr
.devid
) ||
5589 (pci_dev
->addr
.function
!= pci_addr
.function
))
5591 vf
= (pci_dev
->id
.device_id
==
5592 PCI_DEVICE_ID_MELLANOX_CONNECTX3VF
);
5593 INFO("PCI information matches, using device \"%s\" (VF: %s)",
5594 list
[i
]->name
, (vf
? "true" : "false"));
5595 attr_ctx
= ibv_open_device(list
[i
]);
5599 if (attr_ctx
== NULL
) {
5600 ibv_free_device_list(list
);
5603 WARN("cannot access device, is mlx4_ib loaded?");
5606 WARN("cannot use device, are drivers up to date?");
5614 DEBUG("device opened");
5615 if (ibv_query_device(attr_ctx
, &device_attr
))
5617 INFO("%u port(s) detected", device_attr
.phys_port_cnt
);
5619 for (i
= 0; i
< device_attr
.phys_port_cnt
; i
++) {
5620 uint32_t port
= i
+ 1; /* ports are indexed from one */
5621 uint32_t test
= (1 << i
);
5622 struct ibv_context
*ctx
= NULL
;
5623 struct ibv_port_attr port_attr
;
5624 struct ibv_pd
*pd
= NULL
;
5625 struct priv
*priv
= NULL
;
5626 struct rte_eth_dev
*eth_dev
= NULL
;
5627 #ifdef HAVE_EXP_QUERY_DEVICE
5628 struct ibv_exp_device_attr exp_device_attr
;
5629 #endif /* HAVE_EXP_QUERY_DEVICE */
5630 struct ether_addr mac
;
5632 #ifdef HAVE_EXP_QUERY_DEVICE
5633 exp_device_attr
.comp_mask
= IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS
;
5635 exp_device_attr
.comp_mask
|= IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ
;
5636 #endif /* RSS_SUPPORT */
5637 #endif /* HAVE_EXP_QUERY_DEVICE */
5639 DEBUG("using port %u (%08" PRIx32
")", port
, test
);
5641 ctx
= ibv_open_device(ibv_dev
);
5645 /* Check port status. */
5646 err
= ibv_query_port(ctx
, port
, &port_attr
);
5648 ERROR("port query failed: %s", strerror(err
));
5652 if (port_attr
.link_layer
!= IBV_LINK_LAYER_ETHERNET
) {
5653 ERROR("port %d is not configured in Ethernet mode",
5658 if (port_attr
.state
!= IBV_PORT_ACTIVE
)
5659 DEBUG("port %d is not active: \"%s\" (%d)",
5660 port
, ibv_port_state_str(port_attr
.state
),
5663 /* Allocate protection domain. */
5664 pd
= ibv_alloc_pd(ctx
);
5666 ERROR("PD allocation failure");
5671 mlx4_dev
[idx
].ports
|= test
;
5673 /* from rte_ethdev.c */
5674 priv
= rte_zmalloc("ethdev private structure",
5676 RTE_CACHE_LINE_SIZE
);
5678 ERROR("priv allocation failure");
5684 priv
->device_attr
= device_attr
;
5687 priv
->mtu
= ETHER_MTU
;
5688 #ifdef HAVE_EXP_QUERY_DEVICE
5689 if (ibv_exp_query_device(ctx
, &exp_device_attr
)) {
5690 ERROR("ibv_exp_query_device() failed");
5694 if ((exp_device_attr
.exp_device_cap_flags
&
5695 IBV_EXP_DEVICE_QPG
) &&
5696 (exp_device_attr
.exp_device_cap_flags
&
5697 IBV_EXP_DEVICE_UD_RSS
) &&
5698 (exp_device_attr
.comp_mask
&
5699 IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ
) &&
5700 (exp_device_attr
.max_rss_tbl_sz
> 0)) {
5703 priv
->max_rss_tbl_sz
= exp_device_attr
.max_rss_tbl_sz
;
5707 priv
->max_rss_tbl_sz
= 0;
5709 priv
->hw_tss
= !!(exp_device_attr
.exp_device_cap_flags
&
5710 IBV_EXP_DEVICE_UD_TSS
);
5711 DEBUG("device flags: %s%s%s",
5712 (priv
->hw_qpg
? "IBV_DEVICE_QPG " : ""),
5713 (priv
->hw_tss
? "IBV_DEVICE_TSS " : ""),
5714 (priv
->hw_rss
? "IBV_DEVICE_RSS " : ""));
5716 DEBUG("maximum RSS indirection table size: %u",
5717 exp_device_attr
.max_rss_tbl_sz
);
5718 #endif /* RSS_SUPPORT */
5721 ((exp_device_attr
.exp_device_cap_flags
&
5722 IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT
) &&
5723 (exp_device_attr
.exp_device_cap_flags
&
5724 IBV_EXP_DEVICE_RX_CSUM_IP_PKT
));
5725 DEBUG("checksum offloading is %ssupported",
5726 (priv
->hw_csum
? "" : "not "));
5728 priv
->hw_csum_l2tun
= !!(exp_device_attr
.exp_device_cap_flags
&
5729 IBV_EXP_DEVICE_VXLAN_SUPPORT
);
5730 DEBUG("L2 tunnel checksum offloads are %ssupported",
5731 (priv
->hw_csum_l2tun
? "" : "not "));
5734 priv
->inl_recv_size
= mlx4_getenv_int("MLX4_INLINE_RECV_SIZE");
5736 if (priv
->inl_recv_size
) {
5737 exp_device_attr
.comp_mask
=
5738 IBV_EXP_DEVICE_ATTR_INLINE_RECV_SZ
;
5739 if (ibv_exp_query_device(ctx
, &exp_device_attr
)) {
5740 INFO("Couldn't query device for inline-receive"
5742 priv
->inl_recv_size
= 0;
5744 if ((unsigned)exp_device_attr
.inline_recv_sz
<
5745 priv
->inl_recv_size
) {
5746 INFO("Max inline-receive (%d) <"
5747 " requested inline-receive (%u)",
5748 exp_device_attr
.inline_recv_sz
,
5749 priv
->inl_recv_size
);
5750 priv
->inl_recv_size
=
5751 exp_device_attr
.inline_recv_sz
;
5754 INFO("Set inline receive size to %u",
5755 priv
->inl_recv_size
);
5757 #endif /* INLINE_RECV */
5758 #endif /* HAVE_EXP_QUERY_DEVICE */
5760 (void)mlx4_getenv_int
;
5762 /* Configure the first MAC address by default. */
5763 if (priv_get_mac(priv
, &mac
.addr_bytes
)) {
5764 ERROR("cannot get MAC address, is mlx4_en loaded?"
5765 " (errno: %s)", strerror(errno
));
5768 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
5770 mac
.addr_bytes
[0], mac
.addr_bytes
[1],
5771 mac
.addr_bytes
[2], mac
.addr_bytes
[3],
5772 mac
.addr_bytes
[4], mac
.addr_bytes
[5]);
5773 /* Register MAC and broadcast addresses. */
5774 claim_zero(priv_mac_addr_add(priv
, 0,
5775 (const uint8_t (*)[ETHER_ADDR_LEN
])
5777 claim_zero(priv_mac_addr_add(priv
, (elemof(priv
->mac
) - 1),
5778 &(const uint8_t [ETHER_ADDR_LEN
])
5779 { "\xff\xff\xff\xff\xff\xff" }));
5782 char ifname
[IF_NAMESIZE
];
5784 if (priv_get_ifname(priv
, &ifname
) == 0)
5785 DEBUG("port %u ifname is \"%s\"",
5786 priv
->port
, ifname
);
5788 DEBUG("port %u ifname is unknown", priv
->port
);
5791 /* Get actual MTU if possible. */
5792 priv_get_mtu(priv
, &priv
->mtu
);
5793 DEBUG("port %u MTU is %u", priv
->port
, priv
->mtu
);
5795 /* from rte_ethdev.c */
5797 char name
[RTE_ETH_NAME_MAX_LEN
];
5799 snprintf(name
, sizeof(name
), "%s port %u",
5800 ibv_get_device_name(ibv_dev
), port
);
5801 eth_dev
= rte_eth_dev_allocate(name
);
5803 if (eth_dev
== NULL
) {
5804 ERROR("can not allocate rte ethdev");
5809 /* Secondary processes have to use local storage for their
5810 * private data as well as a copy of eth_dev->data, but this
5811 * pointer must not be modified before burst functions are
5812 * actually called. */
5813 if (mlx4_is_secondary()) {
5814 struct mlx4_secondary_data
*sd
=
5815 &mlx4_secondary_data
[eth_dev
->data
->port_id
];
5817 sd
->primary_priv
= eth_dev
->data
->dev_private
;
5818 if (sd
->primary_priv
== NULL
) {
5819 ERROR("no private data for port %u",
5820 eth_dev
->data
->port_id
);
5824 sd
->shared_dev_data
= eth_dev
->data
;
5825 rte_spinlock_init(&sd
->lock
);
5826 memcpy(sd
->data
.name
, sd
->shared_dev_data
->name
,
5827 sizeof(sd
->data
.name
));
5828 sd
->data
.dev_private
= priv
;
5829 sd
->data
.rx_mbuf_alloc_failed
= 0;
5830 sd
->data
.mtu
= ETHER_MTU
;
5831 sd
->data
.port_id
= sd
->shared_dev_data
->port_id
;
5832 sd
->data
.mac_addrs
= priv
->mac
;
5833 eth_dev
->tx_pkt_burst
= mlx4_tx_burst_secondary_setup
;
5834 eth_dev
->rx_pkt_burst
= mlx4_rx_burst_secondary_setup
;
5836 eth_dev
->data
->dev_private
= priv
;
5837 eth_dev
->data
->rx_mbuf_alloc_failed
= 0;
5838 eth_dev
->data
->mtu
= ETHER_MTU
;
5839 eth_dev
->data
->mac_addrs
= priv
->mac
;
5841 eth_dev
->pci_dev
= pci_dev
;
5843 rte_eth_copy_pci_info(eth_dev
, pci_dev
);
5845 eth_dev
->driver
= &mlx4_driver
;
5847 priv
->dev
= eth_dev
;
5848 eth_dev
->dev_ops
= &mlx4_dev_ops
;
5849 TAILQ_INIT(ð_dev
->link_intr_cbs
);
5851 /* Bring Ethernet device up. */
5852 DEBUG("forcing Ethernet interface up");
5853 priv_set_flags(priv
, ~IFF_UP
, IFF_UP
);
5859 claim_zero(ibv_dealloc_pd(pd
));
5861 claim_zero(ibv_close_device(ctx
));
5863 rte_eth_dev_release_port(eth_dev
);
5868 * XXX if something went wrong in the loop above, there is a resource
5869 * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
5870 * long as the dpdk does not provide a way to deallocate a ethdev and a
5871 * way to enumerate the registered ethdevs to free the previous ones.
5874 /* no port found, complain */
5875 if (!mlx4_dev
[idx
].ports
) {
5882 claim_zero(ibv_close_device(attr_ctx
));
5884 ibv_free_device_list(list
);
5889 static const struct rte_pci_id mlx4_pci_id_map
[] = {
5891 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
5892 PCI_DEVICE_ID_MELLANOX_CONNECTX3
)
5895 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
5896 PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO
)
5899 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX
,
5900 PCI_DEVICE_ID_MELLANOX_CONNECTX3VF
)
5907 static struct eth_driver mlx4_driver
= {
5910 .name
= MLX4_DRIVER_NAME
5912 .id_table
= mlx4_pci_id_map
,
5913 .probe
= mlx4_pci_probe
,
5914 .drv_flags
= RTE_PCI_DRV_INTR_LSC
,
5916 .dev_private_size
= sizeof(struct priv
)
5920 * Driver initialization routine.
5922 RTE_INIT(rte_mlx4_pmd_init
);
5924 rte_mlx4_pmd_init(void)
5926 RTE_BUILD_BUG_ON(sizeof(wr_id_t
) != sizeof(uint64_t));
5928 * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
5929 * huge pages. Calling ibv_fork_init() during init allows
5930 * applications to use fork() safely for purposes other than
5931 * using this PMD, which is not supported in forked processes.
5933 setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
5935 rte_eal_pci_register(&mlx4_driver
.pci_drv
);
5938 RTE_PMD_EXPORT_NAME(net_mlx4
, __COUNTER__
);
5939 RTE_PMD_REGISTER_PCI_TABLE(net_mlx4
, mlx4_pci_id_map
);