[dpdk-dev] [PATCH v3 07/10] net/bnx2x: serialize access to pf2vf mailbox
Chas Williams
3chas3 at gmail.com
Wed Oct 12 01:04:58 CEST 2016
The pf2vf mailbox can only be used by one thread at a time.
Fixes: 540a211084a7 ("bnx2x: driver core")
Signed-off-by: Chas Williams <3chas3 at gmail.com>
---
drivers/net/bnx2x/bnx2x.h | 12 +++--
drivers/net/bnx2x/bnx2x_ethdev.c | 2 +
drivers/net/bnx2x/bnx2x_vfpf.c | 113 +++++++++++++++++++++++++++------------
3 files changed, 88 insertions(+), 39 deletions(-)
diff --git a/drivers/net/bnx2x/bnx2x.h b/drivers/net/bnx2x/bnx2x.h
index 712ee6c..e4979ac 100644
--- a/drivers/net/bnx2x/bnx2x.h
+++ b/drivers/net/bnx2x/bnx2x.h
@@ -17,6 +17,7 @@
#define __BNX2X_H__
#include <rte_byteorder.h>
+#include <rte_spinlock.h>
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
#ifndef __LITTLE_ENDIAN
@@ -1028,12 +1029,13 @@ struct bnx2x_softc {
struct bnx2x_mac_ops mac_ops;
/* structures for VF mbox/response/bulletin */
- struct bnx2x_vf_mbx_msg *vf2pf_mbox;
- struct bnx2x_dma vf2pf_mbox_mapping;
- struct vf_acquire_resp_tlv acquire_resp;
+ struct bnx2x_vf_mbx_msg *vf2pf_mbox;
+ struct bnx2x_dma vf2pf_mbox_mapping;
+ struct vf_acquire_resp_tlv acquire_resp;
struct bnx2x_vf_bulletin *pf2vf_bulletin;
- struct bnx2x_dma pf2vf_bulletin_mapping;
- struct bnx2x_vf_bulletin old_bulletin;
+ struct bnx2x_dma pf2vf_bulletin_mapping;
+ struct bnx2x_vf_bulletin old_bulletin;
+ rte_spinlock_t vf2pf_lock;
int media;
diff --git a/drivers/net/bnx2x/bnx2x_ethdev.c b/drivers/net/bnx2x/bnx2x_ethdev.c
index 62595c2..f086188 100644
--- a/drivers/net/bnx2x/bnx2x_ethdev.c
+++ b/drivers/net/bnx2x/bnx2x_ethdev.c
@@ -575,6 +575,8 @@ bnx2x_common_dev_init(struct rte_eth_dev *eth_dev, int is_vf)
eth_dev->data->port_id, pci_dev->id.vendor_id, pci_dev->id.device_id);
if (IS_VF(sc)) {
+ rte_spinlock_init(&sc->vf2pf_lock);
+
if (bnx2x_dma_alloc(sc, sizeof(struct bnx2x_vf_mbx_msg),
&sc->vf2pf_mbox_mapping, "vf2pf_mbox",
RTE_CACHE_LINE_SIZE) != 0)
diff --git a/drivers/net/bnx2x/bnx2x_vfpf.c b/drivers/net/bnx2x/bnx2x_vfpf.c
index c8bcc69..340422d 100644
--- a/drivers/net/bnx2x/bnx2x_vfpf.c
+++ b/drivers/net/bnx2x/bnx2x_vfpf.c
@@ -78,10 +78,13 @@ bnx2x_add_tlv(__rte_unused struct bnx2x_softc *sc, void *tlvs_list,
/* Initiliaze header of the first tlv and clear mailbox*/
static void
-bnx2x_init_first_tlv(struct bnx2x_softc *sc, struct vf_first_tlv *first_tlv,
- uint16_t type, uint16_t length)
+bnx2x_vf_prep(struct bnx2x_softc *sc, struct vf_first_tlv *first_tlv,
+ uint16_t type, uint16_t length)
{
struct bnx2x_vf_mbx_msg *mbox = sc->vf2pf_mbox;
+
+ rte_spinlock_lock(&sc->vf2pf_lock);
+
PMD_DRV_LOG(DEBUG, "Preparing %d tlv for sending", type);
memset(mbox, 0, sizeof(struct bnx2x_vf_mbx_msg));
@@ -92,6 +95,17 @@ bnx2x_init_first_tlv(struct bnx2x_softc *sc, struct vf_first_tlv *first_tlv,
first_tlv->reply_offset = sizeof(mbox->query);
}
+/* releases the mailbox */
+static void
+bnx2x_vf_finalize(struct bnx2x_softc *sc,
+ __rte_unused struct vf_first_tlv *first_tlv)
+{
+ PMD_DRV_LOG(DEBUG, "done sending [%d] tlv over vf pf channel",
+ first_tlv->tl.type);
+
+ rte_spinlock_unlock(&sc->vf2pf_lock);
+}
+
#define BNX2X_VF_CMD_ADDR_LO PXP_VF_ADDR_CSDM_GLOBAL_START
#define BNX2X_VF_CMD_ADDR_HI BNX2X_VF_CMD_ADDR_LO + 4
#define BNX2X_VF_CMD_TRIGGER BNX2X_VF_CMD_ADDR_HI + 4
@@ -244,13 +258,16 @@ int bnx2x_vf_get_resources(struct bnx2x_softc *sc, uint8_t tx_count, uint8_t rx_
struct vf_acquire_tlv *acq = &sc->vf2pf_mbox->query[0].acquire;
int vf_id;
struct bnx2x_obtain_status obtain_status;
+ int rc = 0;
bnx2x_vf_close(sc);
- bnx2x_init_first_tlv(sc, &acq->first_tlv, BNX2X_VF_TLV_ACQUIRE, sizeof(*acq));
+ bnx2x_vf_prep(sc, &acq->first_tlv, BNX2X_VF_TLV_ACQUIRE, sizeof(*acq));
vf_id = bnx2x_read_vf_id(sc);
- if (vf_id < 0)
- return -EAGAIN;
+ if (vf_id < 0) {
+ rc = -EAGAIN;
+ goto out;
+ }
acq->vf_id = vf_id;
@@ -274,8 +291,10 @@ int bnx2x_vf_get_resources(struct bnx2x_softc *sc, uint8_t tx_count, uint8_t rx_
/* requesting the resources in loop */
obtain_status = bnx2x_loop_obtain_resources(sc);
- if (!obtain_status.success)
- return obtain_status.err_code;
+ if (!obtain_status.success) {
+ rc = obtain_status.err_code;
+ goto out;
+ }
struct vf_acquire_resp_tlv sc_resp = sc->acquire_resp;
@@ -306,7 +325,10 @@ int bnx2x_vf_get_resources(struct bnx2x_softc *sc, uint8_t tx_count, uint8_t rx_
else
eth_random_addr(sc->link_params.mac_addr);
- return 0;
+out:
+ bnx2x_vf_finalize(sc, &acq->first_tlv);
+
+ return rc;
}
/* Ask PF to release VF's resources */
@@ -319,8 +341,8 @@ bnx2x_vf_close(struct bnx2x_softc *sc)
if (vf_id >= 0) {
query = &sc->vf2pf_mbox->query[0].release;
- bnx2x_init_first_tlv(sc, &query->first_tlv, BNX2X_VF_TLV_RELEASE,
- sizeof(*query));
+ bnx2x_vf_prep(sc, &query->first_tlv, BNX2X_VF_TLV_RELEASE,
+ sizeof(*query));
query->vf_id = vf_id;
bnx2x_add_tlv(sc, query, query->first_tlv.tl.length,
@@ -330,6 +352,8 @@ bnx2x_vf_close(struct bnx2x_softc *sc)
bnx2x_do_req4pf(sc, sc->vf2pf_mbox_mapping.paddr);
if (reply->status != BNX2X_VF_STATUS_SUCCESS)
PMD_DRV_LOG(ERR, "Failed to release VF");
+
+ bnx2x_vf_finalize(sc, &query->first_tlv);
}
}
@@ -339,11 +363,11 @@ bnx2x_vf_init(struct bnx2x_softc *sc)
{
struct vf_init_tlv *query;
struct vf_common_reply_tlv *reply = &sc->vf2pf_mbox->resp.common_reply;
- int i;
+ int i, rc = 0;
query = &sc->vf2pf_mbox->query[0].init;
- bnx2x_init_first_tlv(sc, &query->first_tlv, BNX2X_VF_TLV_INIT,
- sizeof(*query));
+ bnx2x_vf_prep(sc, &query->first_tlv, BNX2X_VF_TLV_INIT,
+ sizeof(*query));
FOR_EACH_QUEUE(sc, i) {
query->sb_addr[i] = (unsigned long)(sc->fp[i].sb_dma.paddr);
@@ -360,11 +384,14 @@ bnx2x_vf_init(struct bnx2x_softc *sc)
bnx2x_do_req4pf(sc, sc->vf2pf_mbox_mapping.paddr);
if (reply->status != BNX2X_VF_STATUS_SUCCESS) {
PMD_DRV_LOG(ERR, "Failed to init VF");
- return -EINVAL;
+ rc = -EINVAL;
+ goto out;
}
PMD_DRV_LOG(DEBUG, "VF was initialized");
- return 0;
+out:
+ bnx2x_vf_finalize(sc, &query->first_tlv);
+ return rc;
}
void
@@ -379,9 +406,9 @@ bnx2x_vf_unload(struct bnx2x_softc *sc)
if (vf_id > 0) {
FOR_EACH_QUEUE(sc, i) {
query_op = &sc->vf2pf_mbox->query[0].q_op;
- bnx2x_init_first_tlv(sc, &query_op->first_tlv,
- BNX2X_VF_TLV_TEARDOWN_Q,
- sizeof(*query_op));
+ bnx2x_vf_prep(sc, &query_op->first_tlv,
+ BNX2X_VF_TLV_TEARDOWN_Q,
+ sizeof(*query_op));
query_op->vf_qid = i;
@@ -394,13 +421,15 @@ bnx2x_vf_unload(struct bnx2x_softc *sc)
if (reply->status != BNX2X_VF_STATUS_SUCCESS)
PMD_DRV_LOG(ERR,
"Bad reply for vf_q %d teardown", i);
+
+ bnx2x_vf_finalize(sc, &query_op->first_tlv);
}
bnx2x_vf_set_mac(sc, false);
query = &sc->vf2pf_mbox->query[0].close;
- bnx2x_init_first_tlv(sc, &query->first_tlv, BNX2X_VF_TLV_CLOSE,
- sizeof(*query));
+ bnx2x_vf_prep(sc, &query->first_tlv, BNX2X_VF_TLV_CLOSE,
+ sizeof(*query));
query->vf_id = vf_id;
@@ -412,6 +441,8 @@ bnx2x_vf_unload(struct bnx2x_softc *sc)
if (reply->status != BNX2X_VF_STATUS_SUCCESS)
PMD_DRV_LOG(ERR,
"Bad reply from PF for close message");
+
+ bnx2x_vf_finalize(sc, &query->first_tlv);
}
}
@@ -476,10 +507,11 @@ bnx2x_vf_setup_queue(struct bnx2x_softc *sc, struct bnx2x_fastpath *fp, int lead
struct vf_setup_q_tlv *query;
struct vf_common_reply_tlv *reply = &sc->vf2pf_mbox->resp.common_reply;
uint16_t flags = bnx2x_vf_q_flags(leading);
+ int rc = 0;
query = &sc->vf2pf_mbox->query[0].setup_q;
- bnx2x_init_first_tlv(sc, &query->first_tlv, BNX2X_VF_TLV_SETUP_Q,
- sizeof(*query));
+ bnx2x_vf_prep(sc, &query->first_tlv, BNX2X_VF_TLV_SETUP_Q,
+ sizeof(*query));
query->vf_qid = fp->index;
query->param_valid = VF_RXQ_VALID | VF_TXQ_VALID;
@@ -495,10 +527,12 @@ bnx2x_vf_setup_queue(struct bnx2x_softc *sc, struct bnx2x_fastpath *fp, int lead
if (reply->status != BNX2X_VF_STATUS_SUCCESS) {
PMD_DRV_LOG(ERR, "Failed to setup VF queue[%d]",
fp->index);
- return -EINVAL;
+ rc = -EINVAL;
}
- return 0;
+ bnx2x_vf_finalize(sc, &query->first_tlv);
+
+ return rc;
}
int
@@ -506,9 +540,10 @@ bnx2x_vf_set_mac(struct bnx2x_softc *sc, int set)
{
struct vf_set_q_filters_tlv *query;
struct vf_common_reply_tlv *reply;
+ int rc = 0;
query = &sc->vf2pf_mbox->query[0].set_q_filters;
- bnx2x_init_first_tlv(sc, &query->first_tlv, BNX2X_VF_TLV_SET_Q_FILTERS,
+ bnx2x_vf_prep(sc, &query->first_tlv, BNX2X_VF_TLV_SET_Q_FILTERS,
sizeof(*query));
query->vf_qid = sc->fp->index;
@@ -543,10 +578,12 @@ bnx2x_vf_set_mac(struct bnx2x_softc *sc, int set)
if (BNX2X_VF_STATUS_SUCCESS != reply->status) {
PMD_DRV_LOG(ERR, "Bad reply from PF for SET MAC message: %d",
reply->status);
- return -EINVAL;
+ rc = -EINVAL;
}
- return 0;
+ bnx2x_vf_finalize(sc, &query->first_tlv);
+
+ return rc;
}
int
@@ -555,10 +592,11 @@ bnx2x_vf_config_rss(struct bnx2x_softc *sc,
{
struct vf_rss_tlv *query;
struct vf_common_reply_tlv *reply = &sc->vf2pf_mbox->resp.common_reply;
+ int rc = 0;
query = &sc->vf2pf_mbox->query[0].update_rss;
- bnx2x_init_first_tlv(sc, &query->first_tlv, BNX2X_VF_TLV_UPDATE_RSS,
+ bnx2x_vf_prep(sc, &query->first_tlv, BNX2X_VF_TLV_UPDATE_RSS,
sizeof(*query));
/* add list termination tlv */
@@ -578,10 +616,12 @@ bnx2x_vf_config_rss(struct bnx2x_softc *sc,
bnx2x_do_req4pf(sc, sc->vf2pf_mbox_mapping.paddr);
if (reply->status != BNX2X_VF_STATUS_SUCCESS) {
PMD_DRV_LOG(ERR, "Failed to configure RSS");
- return -EINVAL;
+ rc = -EINVAL;
}
- return 0;
+ bnx2x_vf_finalize(sc, &query->first_tlv);
+
+ return rc;
}
int
@@ -589,9 +629,10 @@ bnx2x_vf_set_rx_mode(struct bnx2x_softc *sc)
{
struct vf_set_q_filters_tlv *query;
struct vf_common_reply_tlv *reply = &sc->vf2pf_mbox->resp.common_reply;
+ int rc = 0;
query = &sc->vf2pf_mbox->query[0].set_q_filters;
- bnx2x_init_first_tlv(sc, &query->first_tlv, BNX2X_VF_TLV_SET_Q_FILTERS,
+ bnx2x_vf_prep(sc, &query->first_tlv, BNX2X_VF_TLV_SET_Q_FILTERS,
sizeof(*query));
query->vf_qid = 0;
@@ -618,7 +659,8 @@ bnx2x_vf_set_rx_mode(struct bnx2x_softc *sc)
break;
default:
PMD_DRV_LOG(ERR, "BAD rx mode (%d)", sc->rx_mode);
- return -EINVAL;
+ rc = -EINVAL;
+ goto out;
}
bnx2x_add_tlv(sc, query, query->first_tlv.tl.length,
@@ -628,8 +670,11 @@ bnx2x_vf_set_rx_mode(struct bnx2x_softc *sc)
bnx2x_do_req4pf(sc, sc->vf2pf_mbox_mapping.paddr);
if (reply->status != BNX2X_VF_STATUS_SUCCESS) {
PMD_DRV_LOG(ERR, "Failed to set RX mode");
- return -EINVAL;
+ rc = -EINVAL;
}
- return 0;
+out:
+ bnx2x_vf_finalize(sc, &query->first_tlv);
+
+ return rc;
}
--
2.7.4
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