[dpdk-dev] [PATCH 5/7] net/dpaa2: add per thread init PMD API
Hemant Agrawal
hemant.agrawal at nxp.com
Mon Jul 19 15:59:15 CEST 2021
From: Nipun Gupta <nipun.gupta at nxp.com>
DPAA2 hardware require a hardware portal context.
If a thread doing DPAA2 i/o do not have portal, it will
allocate it on run-time. This may cause a delay in the
datapath at run-time. To avoid it, it is better to allocate
a hw context portal at the start of thread expected to do
i/o with DPAA2 hardware.
This patch makes necessary changes for the same and creates
a pmd API to allocate a hw context portal for a thread.
Signed-off-by: Nipun Gupta <nipun.gupta at nxp.com>
---
drivers/bus/fslmc/portal/dpaa2_hw_dpio.c | 10 +++++-----
drivers/net/dpaa2/dpaa2_ethdev.c | 16 ++++++++++++++++
drivers/net/dpaa2/rte_pmd_dpaa2.h | 10 ++++++++++
drivers/net/dpaa2/version.map | 2 ++
4 files changed, 33 insertions(+), 5 deletions(-)
diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_dpio.c b/drivers/bus/fslmc/portal/dpaa2_hw_dpio.c
index c224a883ae..1a1e437ed1 100644
--- a/drivers/bus/fslmc/portal/dpaa2_hw_dpio.c
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_dpio.c
@@ -20,7 +20,8 @@
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/epoll.h>
-#include<sys/eventfd.h>
+#include <sys/eventfd.h>
+#include <sys/syscall.h>
#include <rte_mbuf.h>
#include <ethdev_driver.h>
@@ -168,7 +169,7 @@ dpaa2_affine_dpio_intr_to_respective_core(int32_t dpio_id, int cpu_id)
fclose(file);
}
-static int dpaa2_dpio_intr_init(struct dpaa2_dpio_dev *dpio_dev, int cpu_id)
+static int dpaa2_dpio_intr_init(struct dpaa2_dpio_dev *dpio_dev)
{
struct epoll_event epoll_ev;
int eventfd, dpio_epoll_fd, ret;
@@ -205,8 +206,6 @@ static int dpaa2_dpio_intr_init(struct dpaa2_dpio_dev *dpio_dev, int cpu_id)
}
dpio_dev->epoll_fd = dpio_epoll_fd;
- dpaa2_affine_dpio_intr_to_respective_core(dpio_dev->hw_id, cpu_id);
-
return 0;
}
@@ -242,10 +241,11 @@ dpaa2_configure_stashing(struct dpaa2_dpio_dev *dpio_dev, int cpu_id)
}
#ifdef RTE_EVENT_DPAA2
- if (dpaa2_dpio_intr_init(dpio_dev, cpu_id)) {
+ if (dpaa2_dpio_intr_init(dpio_dev)) {
DPAA2_BUS_ERR("Interrupt registration failed for dpio");
return -1;
}
+ dpaa2_affine_dpio_intr_to_respective_core(dpio_dev->hw_id, cpu_id);
#endif
return 0;
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 8b803b8542..d892819a7e 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -2382,6 +2382,22 @@ dpaa2_tm_ops_get(struct rte_eth_dev *dev __rte_unused, void *ops)
return 0;
}
+void
+rte_pmd_dpaa2_thread_init(void)
+{
+ int ret;
+
+ if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
+ ret = dpaa2_affine_qbman_swp();
+ if (ret) {
+ DPAA2_PMD_ERR(
+ "Failed to allocate IO portal, tid: %d\n",
+ rte_gettid());
+ return;
+ }
+ }
+}
+
static struct eth_dev_ops dpaa2_ethdev_ops = {
.dev_configure = dpaa2_eth_dev_configure,
.dev_start = dpaa2_dev_start,
diff --git a/drivers/net/dpaa2/rte_pmd_dpaa2.h b/drivers/net/dpaa2/rte_pmd_dpaa2.h
index 7204a8f951..84ac9d38d1 100644
--- a/drivers/net/dpaa2/rte_pmd_dpaa2.h
+++ b/drivers/net/dpaa2/rte_pmd_dpaa2.h
@@ -84,4 +84,14 @@ rte_pmd_dpaa2_set_custom_hash(uint16_t port_id,
uint16_t offset,
uint8_t size);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
+ *
+ * Do thread specific initialization
+ */
+__rte_experimental
+void
+rte_pmd_dpaa2_thread_init(void);
+
#endif /* _RTE_PMD_DPAA2_H */
diff --git a/drivers/net/dpaa2/version.map b/drivers/net/dpaa2/version.map
index b50da13bcb..49f69dacd2 100644
--- a/drivers/net/dpaa2/version.map
+++ b/drivers/net/dpaa2/version.map
@@ -6,6 +6,8 @@ EXPERIMENTAL {
# added in 21.05
rte_pmd_dpaa2_mux_rx_frame_len;
+ # added in 21.08
+ rte_pmd_dpaa2_thread_init;
};
INTERNAL {
--
2.17.1
More information about the dev
mailing list