[dpdk-dev] [PATCH] event/octeontx2: unlink queues during port release
Shijith Thotton
sthotton at marvell.com
Wed Nov 18 09:54:11 CET 2020
Unlinking queues from port should be done during port release. Doing it
during device re-configuration could result in segfault as ports array
is re-allocated based on new number of ports.
Fixes: f7ac8b66b23c ("event/octeontx2: support linking queues to ports")
Cc: stable at dpdk.org
Signed-off-by: Shijith Thotton <sthotton at marvell.com>
Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
---
drivers/event/octeontx2/otx2_evdev.c | 98 +++++++++++++++++-----------
drivers/event/octeontx2/otx2_evdev.h | 12 ++++
2 files changed, 71 insertions(+), 39 deletions(-)
diff --git a/drivers/event/octeontx2/otx2_evdev.c b/drivers/event/octeontx2/otx2_evdev.c
index b31c26e95..ed29b8325 100644
--- a/drivers/event/octeontx2/otx2_evdev.c
+++ b/drivers/event/octeontx2/otx2_evdev.c
@@ -689,7 +689,36 @@ sso_lf_cfg(struct otx2_sso_evdev *dev, struct otx2_mbox *mbox,
static void
otx2_sso_port_release(void *port)
{
- rte_free(port);
+ struct otx2_ssogws_cookie *gws_cookie = ssogws_get_cookie(port);
+ struct otx2_sso_evdev *dev;
+ int i;
+
+ if (!gws_cookie->configured)
+ goto free;
+
+ dev = sso_pmd_priv(gws_cookie->event_dev);
+ if (dev->dual_ws) {
+ struct otx2_ssogws_dual *ws = port;
+
+ for (i = 0; i < dev->nb_event_queues; i++) {
+ sso_port_link_modify((struct otx2_ssogws *)
+ &ws->ws_state[0], i, false);
+ sso_port_link_modify((struct otx2_ssogws *)
+ &ws->ws_state[1], i, false);
+ }
+ memset(ws, 0, sizeof(*ws));
+ } else {
+ struct otx2_ssogws *ws = port;
+
+ for (i = 0; i < dev->nb_event_queues; i++)
+ sso_port_link_modify(ws, i, false);
+ memset(ws, 0, sizeof(*ws));
+ }
+
+ memset(gws_cookie, 0, sizeof(*gws_cookie));
+
+free:
+ rte_free(gws_cookie);
}
static void
@@ -699,33 +728,6 @@ otx2_sso_queue_release(struct rte_eventdev *event_dev, uint8_t queue_id)
RTE_SET_USED(queue_id);
}
-static void
-sso_clr_links(const struct rte_eventdev *event_dev)
-{
- struct otx2_sso_evdev *dev = sso_pmd_priv(event_dev);
- int i, j;
-
- for (i = 0; i < dev->nb_event_ports; i++) {
- if (dev->dual_ws) {
- struct otx2_ssogws_dual *ws;
-
- ws = event_dev->data->ports[i];
- for (j = 0; j < dev->nb_event_queues; j++) {
- sso_port_link_modify((struct otx2_ssogws *)
- &ws->ws_state[0], j, false);
- sso_port_link_modify((struct otx2_ssogws *)
- &ws->ws_state[1], j, false);
- }
- } else {
- struct otx2_ssogws *ws;
-
- ws = event_dev->data->ports[i];
- for (j = 0; j < dev->nb_event_queues; j++)
- sso_port_link_modify(ws, j, false);
- }
- }
-}
-
static void
sso_restore_links(const struct rte_eventdev *event_dev)
{
@@ -803,6 +805,7 @@ sso_configure_dual_ports(const struct rte_eventdev *event_dev)
}
for (i = 0; i < dev->nb_event_ports; i++) {
+ struct otx2_ssogws_cookie *gws_cookie;
struct otx2_ssogws_dual *ws;
uintptr_t base;
@@ -811,14 +814,20 @@ sso_configure_dual_ports(const struct rte_eventdev *event_dev)
} else {
/* Allocate event port memory */
ws = rte_zmalloc_socket("otx2_sso_ws",
- sizeof(struct otx2_ssogws_dual),
+ sizeof(struct otx2_ssogws_dual) +
+ RTE_CACHE_LINE_SIZE,
RTE_CACHE_LINE_SIZE,
event_dev->data->socket_id);
- }
- if (ws == NULL) {
- otx2_err("Failed to alloc memory for port=%d", i);
- rc = -ENOMEM;
- break;
+ if (ws == NULL) {
+ otx2_err("Failed to alloc memory for port=%d",
+ i);
+ rc = -ENOMEM;
+ break;
+ }
+
+ /* First cache line reserved for cookie */
+ ws = (struct otx2_ssogws_dual *)
+ ((uint8_t *)ws + RTE_CACHE_LINE_SIZE);
}
ws->port = i;
@@ -830,6 +839,10 @@ sso_configure_dual_ports(const struct rte_eventdev *event_dev)
sso_set_port_ops((struct otx2_ssogws *)&ws->ws_state[1], base);
vws++;
+ gws_cookie = ssogws_get_cookie(ws);
+ gws_cookie->event_dev = event_dev;
+ gws_cookie->configured = 1;
+
event_dev->data->ports[i] = ws;
}
@@ -866,6 +879,7 @@ sso_configure_ports(const struct rte_eventdev *event_dev)
}
for (i = 0; i < nb_lf; i++) {
+ struct otx2_ssogws_cookie *gws_cookie;
struct otx2_ssogws *ws;
uintptr_t base;
@@ -878,7 +892,8 @@ sso_configure_ports(const struct rte_eventdev *event_dev)
/* Allocate event port memory */
ws = rte_zmalloc_socket("otx2_sso_ws",
- sizeof(struct otx2_ssogws),
+ sizeof(struct otx2_ssogws) +
+ RTE_CACHE_LINE_SIZE,
RTE_CACHE_LINE_SIZE,
event_dev->data->socket_id);
if (ws == NULL) {
@@ -887,10 +902,18 @@ sso_configure_ports(const struct rte_eventdev *event_dev)
break;
}
+ /* First cache line reserved for cookie */
+ ws = (struct otx2_ssogws *)
+ ((uint8_t *)ws + RTE_CACHE_LINE_SIZE);
+
ws->port = i;
base = dev->bar2 + (RVU_BLOCK_ADDR_SSOW << 20 | i << 12);
sso_set_port_ops(ws, base);
+ gws_cookie = ssogws_get_cookie(ws);
+ gws_cookie->event_dev = event_dev;
+ gws_cookie->configured = 1;
+
event_dev->data->ports[i] = ws;
}
@@ -1099,11 +1122,8 @@ otx2_sso_configure(const struct rte_eventdev *event_dev)
return -EINVAL;
}
- if (dev->configured) {
+ if (dev->configured)
sso_unregister_irqs(event_dev);
- /* Clear any prior port-queue mapping. */
- sso_clr_links(event_dev);
- }
if (dev->nb_event_queues) {
/* Finit any previous queues. */
diff --git a/drivers/event/octeontx2/otx2_evdev.h b/drivers/event/octeontx2/otx2_evdev.h
index 547e29d4a..116f953f5 100644
--- a/drivers/event/octeontx2/otx2_evdev.h
+++ b/drivers/event/octeontx2/otx2_evdev.h
@@ -217,6 +217,18 @@ sso_pmd_priv(const struct rte_eventdev *event_dev)
return event_dev->data->dev_private;
}
+struct otx2_ssogws_cookie {
+ const struct rte_eventdev *event_dev;
+ bool configured;
+};
+
+static inline struct otx2_ssogws_cookie *
+ssogws_get_cookie(void *ws)
+{
+ return (struct otx2_ssogws_cookie *)
+ ((uint8_t *)ws - RTE_CACHE_LINE_SIZE);
+}
+
static const union mbuf_initializer mbuf_init = {
.fields = {
.data_off = RTE_PKTMBUF_HEADROOM,
--
2.25.1
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