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net/liquidio: add API to control Rx

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Enable or disable packet reception.

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>
This commit is contained in:
Shijith Thotton 2017-03-25 11:54:44 +05:30 committed by Ferruh Yigit
parent bc55e0545a
commit 432dbfde1d
2 changed files with 62 additions and 0 deletions
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3
drivers/net/liquidio/base/lio_hw_defs.h
View File

@ -128,6 +128,9 @@ enum octeon_tag_type {
#define LIO_MAX_RX_PKTLEN (64 * 1024)
/* NIC Command types */
#define LIO_CMD_RX_CTL 0x4
/* RX(packets coming from wire) Checksum verification flags */
/* TCP/UDP csum */
#define LIO_L4_CSUM_VERIFIED 0x1

59
drivers/net/liquidio/lio_ethdev.c
View File

@ -41,6 +41,61 @@
#include "lio_ethdev.h"
#include "lio_rxtx.h"
/* Wait for control command to reach nic. */
static uint16_t
lio_wait_for_ctrl_cmd(struct lio_device *lio_dev,
struct lio_dev_ctrl_cmd *ctrl_cmd)
{
uint16_t timeout = LIO_MAX_CMD_TIMEOUT;
while ((ctrl_cmd->cond == 0) && --timeout) {
lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);
rte_delay_ms(1);
}
return !timeout;
}
/**
* \brief Send Rx control command
* @param eth_dev Pointer to the structure rte_eth_dev
* @param start_stop whether to start or stop
*/
static int
lio_send_rx_ctrl_cmd(struct rte_eth_dev *eth_dev, int start_stop)
{
struct lio_device *lio_dev = LIO_DEV(eth_dev);
struct lio_dev_ctrl_cmd ctrl_cmd;
struct lio_ctrl_pkt ctrl_pkt;
/* flush added to prevent cmd failure
* incase the queue is full
*/
lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);
memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));
ctrl_cmd.eth_dev = eth_dev;
ctrl_cmd.cond = 0;
ctrl_pkt.ncmd.s.cmd = LIO_CMD_RX_CTL;
ctrl_pkt.ncmd.s.param1 = start_stop;
ctrl_pkt.ctrl_cmd = &ctrl_cmd;
if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
lio_dev_err(lio_dev, "Failed to send RX Control message\n");
return -1;
}
if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
lio_dev_err(lio_dev, "RX Control command timed out\n");
return -1;
}
return 0;
}
/**
* Atomically writes the link status information into global
* structure rte_eth_dev.
@ -402,6 +457,9 @@ lio_dev_start(struct rte_eth_dev *eth_dev)
if (lio_dev->fn_list.enable_io_queues(lio_dev))
return -1;
if (lio_send_rx_ctrl_cmd(eth_dev, 1))
return -1;
/* Ready for link status updates */
lio_dev->intf_open = 1;
rte_mb();
@ -420,6 +478,7 @@ lio_dev_start(struct rte_eth_dev *eth_dev)
dev_lsc_handle_error:
lio_dev->intf_open = 0;
lio_send_rx_ctrl_cmd(eth_dev, 0);
return ret;
}