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From: Shijith Thotton <shijith.thotton@caviumnetworks.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: dev@dpdk.org, Jerin Jacob <jerin.jacob@caviumnetworks.com>,
Derek Chickles <derek.chickles@caviumnetworks.com>,
Venkat Koppula <venkat.koppula@caviumnetworks.com>,
Srisivasubramanian S <ssrinivasan@caviumnetworks.com>,
Mallesham Jatharakonda <mjatharakonda@oneconvergence.com>
Date: Sat, 25 Mar 2017 11:54:26 +0530
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Subject: [dpdk-dev] [PATCH v3 15/46] net/liquidio: add APIs to allocate and
free SC buffer pool
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Soft command (SC) holds device control command and related information.
SC buffer pool holds buffers which are used during soft command
allocation.
Signed-off-by: Shijith Thotton <shijith.thotton@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Venkat Koppula <venkat.koppula@caviumnetworks.com>
Signed-off-by: Srisivasubramanian S <ssrinivasan@caviumnetworks.com>
Signed-off-by: Mallesham Jatharakonda <mjatharakonda@oneconvergence.com>
---
drivers/net/liquidio/lio_ethdev.c | 12 ++++++++++++
drivers/net/liquidio/lio_rxtx.c | 21 +++++++++++++++++++++
drivers/net/liquidio/lio_rxtx.h | 9 +++++++++
drivers/net/liquidio/lio_struct.h | 3 +++
4 files changed, 45 insertions(+)
diff --git a/drivers/net/liquidio/lio_ethdev.c b/drivers/net/liquidio/lio_ethdev.c
index 5d7d5a7..a1dcdf6 100644
--- a/drivers/net/liquidio/lio_ethdev.c
+++ b/drivers/net/liquidio/lio_ethdev.c
@@ -101,6 +101,12 @@
return -1;
}
+ /* Initialize soft command buffer pool */
+ if (lio_setup_sc_buffer_pool(lio_dev)) {
+ lio_dev_err(lio_dev, "sc buffer pool allocation failed\n");
+ return -1;
+ }
+
if (lio_dev->fn_list.setup_mbox(lio_dev)) {
lio_dev_err(lio_dev, "Mailbox setup failed\n");
goto error;
@@ -141,6 +147,7 @@
return 0;
error:
+ lio_free_sc_buffer_pool(lio_dev);
if (lio_dev->mbox[0])
lio_dev->fn_list.free_mbox(lio_dev);
if (lio_dev->instr_queue[0])
@@ -152,11 +159,16 @@
static int
lio_eth_dev_uninit(struct rte_eth_dev *eth_dev)
{
+ struct lio_device *lio_dev = LIO_DEV(eth_dev);
+
PMD_INIT_FUNC_TRACE();
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return -EPERM;
+ /* lio_free_sc_buffer_pool */
+ lio_free_sc_buffer_pool(lio_dev);
+
rte_free(eth_dev->data->mac_addrs);
eth_dev->data->mac_addrs = NULL;
diff --git a/drivers/net/liquidio/lio_rxtx.c b/drivers/net/liquidio/lio_rxtx.c
index 4a687d8..1c6ce59 100644
--- a/drivers/net/liquidio/lio_rxtx.c
+++ b/drivers/net/liquidio/lio_rxtx.c
@@ -206,3 +206,24 @@
lio_dev->instr_queue[0] = NULL;
lio_dev->num_iqs--;
}
+
+int
+lio_setup_sc_buffer_pool(struct lio_device *lio_dev)
+{
+ char sc_pool_name[RTE_MEMPOOL_NAMESIZE];
+ uint16_t buf_size;
+
+ buf_size = LIO_SOFT_COMMAND_BUFFER_SIZE + RTE_PKTMBUF_HEADROOM;
+ snprintf(sc_pool_name, sizeof(sc_pool_name),
+ "lio_sc_pool_%u", lio_dev->port_id);
+ lio_dev->sc_buf_pool = rte_pktmbuf_pool_create(sc_pool_name,
+ LIO_MAX_SOFT_COMMAND_BUFFERS,
+ 0, 0, buf_size, SOCKET_ID_ANY);
+ return 0;
+}
+
+void
+lio_free_sc_buffer_pool(struct lio_device *lio_dev)
+{
+ rte_mempool_free(lio_dev->sc_buf_pool);
+}
diff --git a/drivers/net/liquidio/lio_rxtx.h b/drivers/net/liquidio/lio_rxtx.h
index 33f178b..b308211 100644
--- a/drivers/net/liquidio/lio_rxtx.h
+++ b/drivers/net/liquidio/lio_rxtx.h
@@ -47,6 +47,15 @@ struct lio_request_list {
void *buf;
};
+/** The size of each buffer in soft command buffer pool */
+#define LIO_SOFT_COMMAND_BUFFER_SIZE 1536
+
+/** Maximum number of buffers to allocate into soft command buffer pool */
+#define LIO_MAX_SOFT_COMMAND_BUFFERS 255
+
+int lio_setup_sc_buffer_pool(struct lio_device *lio_dev);
+void lio_free_sc_buffer_pool(struct lio_device *lio_dev);
+
/** Setup instruction queue zero for the device
* @param lio_dev which lio device to setup
*
diff --git a/drivers/net/liquidio/lio_struct.h b/drivers/net/liquidio/lio_struct.h
index 2806c37..992ad39 100644
--- a/drivers/net/liquidio/lio_struct.h
+++ b/drivers/net/liquidio/lio_struct.h
@@ -277,6 +277,9 @@ struct lio_device {
uint32_t num_iqs;
+ /* The pool containing pre allocated buffers used for soft commands */
+ struct rte_mempool *sc_buf_pool;
+
/** The input instruction queues */
struct lio_instr_queue *instr_queue[LIO_MAX_POSSIBLE_INSTR_QUEUES];
--
1.8.3.1