d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ethdev: introduce FEC API

Browse Source 
This patch adds Forward error correction(FEC) support for ethdev.
Introduce APIs which support query and config FEC information in
hardware.

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Reviewed-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Reviewed-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Chengchang Tang <tangchengchang@huawei.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
This commit is contained in:
Min Hu (Connor) 2020-10-08 18:02:54 +08:00 committed by Ferruh Yigit
parent d38a06bf43
commit b7ccfb09da
5 changed files with 245 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
doc/guides/rel_notes/release_20_11.rst
View File

@ -55,6 +55,11 @@ New Features
Also, make sure to start the actual text at the margin.
=======================================================
* **Added the FEC API, for a generic FEC query and config.**
Added the FEC API which provides functions for query FEC capabilities and
current FEC mode from device. Also, API for configuring FEC mode is also provided.
* **Updated Broadcom bnxt driver.**
Updated the Broadcom bnxt driver with new features and improvements, including:

44
lib/librte_ethdev/rte_ethdev.c
View File

@ -3660,6 +3660,50 @@ rte_eth_led_off(uint16_t port_id)
return eth_err(port_id, (*dev->dev_ops->dev_led_off)(dev));
}
int
rte_eth_fec_get_capability(uint16_t port_id,
struct rte_eth_fec_capa *speed_fec_capa,
unsigned int num)
{
struct rte_eth_dev *dev;
int ret;
if (speed_fec_capa == NULL && num > 0)
return -EINVAL;
RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
dev = &rte_eth_devices[port_id];
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->fec_get_capability, -ENOTSUP);
ret = (*dev->dev_ops->fec_get_capability)(dev, speed_fec_capa, num);
return ret;
}
int
rte_eth_fec_get(uint16_t port_id, uint32_t *fec_capa)
{
struct rte_eth_dev *dev;
if (fec_capa == NULL)
return -EINVAL;
RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
dev = &rte_eth_devices[port_id];
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->fec_get, -ENOTSUP);
return eth_err(port_id, (*dev->dev_ops->fec_get)(dev, fec_capa));
}
int
rte_eth_fec_set(uint16_t port_id, uint32_t fec_capa)
{
struct rte_eth_dev *dev;
RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
dev = &rte_eth_devices[port_id];
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->fec_set, -ENOTSUP);
return eth_err(port_id, (*dev->dev_ops->fec_set)(dev, fec_capa));
}
/*
* Returns index into MAC address array of addr. Use 00:00:00:00:00:00 to find
* an empty spot.

105
lib/librte_ethdev/rte_ethdev.h
View File

@ -1544,6 +1544,29 @@ struct rte_eth_dcb_info {
struct rte_eth_dcb_tc_queue_mapping tc_queue;
};
/**
* This enum indicates the possible Forward Error Correction (FEC) modes
* of an ethdev port.
*/
enum rte_eth_fec_mode {
RTE_ETH_FEC_NOFEC = 0, /**< FEC is off */
RTE_ETH_FEC_AUTO, /**< FEC autonegotiation modes */
RTE_ETH_FEC_BASER, /**< FEC using common algorithm */
RTE_ETH_FEC_RS, /**< FEC using RS algorithm */
};
/* Translate from FEC mode to FEC capa */
#define RTE_ETH_FEC_MODE_TO_CAPA(x) (1U << (x))
/* This macro indicates FEC capa mask */
#define RTE_ETH_FEC_MODE_CAPA_MASK(x) (1U << (RTE_ETH_FEC_ ## x))
/* A structure used to get capabilities per link speed */
struct rte_eth_fec_capa {
uint32_t speed; /**< Link speed (see ETH_SPEED_NUM_*) */
uint32_t capa; /**< FEC capabilities bitmask */
};
#define RTE_ETH_ALL RTE_MAX_ETHPORTS
/* Macros to check for valid port */
@ -3390,6 +3413,88 @@ int rte_eth_led_on(uint16_t port_id);
*/
int rte_eth_led_off(uint16_t port_id);
/**
* @warning
* @b EXPERIMENTAL: this API may change, or be removed, without prior notice
*
* Get Forward Error Correction(FEC) capability.
*
* @param port_id
* The port identifier of the Ethernet device.
* @param speed_fec_capa
* speed_fec_capa is out only with per-speed capabilities.
* If set to NULL, the function returns the required number
* of required array entries.
* @param num
* a number of elements in an speed_fec_capa array.
*
* @return
* - A non-negative value lower or equal to num: success. The return value
* is the number of entries filled in the fec capa array.
* - A non-negative value higher than num: error, the given fec capa array
* is too small. The return value corresponds to the num that should
* be given to succeed. The entries in fec capa array are not valid and
* shall not be used by the caller.
* - (-ENOTSUP) if underlying hardware OR driver doesn't support.
* that operation.
* - (-EIO) if device is removed.
* - (-ENODEV) if *port_id* invalid.
* - (-EINVAL) if *num* or *speed_fec_capa* invalid
*/
__rte_experimental
int rte_eth_fec_get_capability(uint16_t port_id,
struct rte_eth_fec_capa *speed_fec_capa,
unsigned int num);
/**
* @warning
* @b EXPERIMENTAL: this API may change, or be removed, without prior notice
*
* Get current Forward Error Correction(FEC) mode.
* If link is down and AUTO is enabled, AUTO is returned, otherwise,
* configured FEC mode is returned.
* If link is up, current FEC mode is returned.
*
* @param port_id
* The port identifier of the Ethernet device.
* @param fec_capa
* A bitmask of enabled FEC modes. If AUTO bit is set, other
* bits specify FEC modes which may be negotiated. If AUTO
* bit is clear, specify FEC modes to be used (only one valid
* mode per speed may be set).
* @return
* - (0) if successful.
* - (-ENOTSUP) if underlying hardware OR driver doesn't support.
* that operation.
* - (-EIO) if device is removed.
* - (-ENODEV) if *port_id* invalid.
*/
__rte_experimental
int rte_eth_fec_get(uint16_t port_id, uint32_t *fec_capa);
/**
* @warning
* @b EXPERIMENTAL: this API may change, or be removed, without prior notice
*
* Set Forward Error Correction(FEC) mode.
*
* @param port_id
* The port identifier of the Ethernet device.
* @param fec_capa
* A bitmask of allowed FEC modes. If AUTO bit is set, other
* bits specify FEC modes which may be negotiated. If AUTO
* bit is clear, specify FEC modes to be used (only one valid
* mode per speed may be set).
* @return
* - (0) if successful.
* - (-EINVAL) if the FEC mode is not valid.
* - (-ENOTSUP) if underlying hardware OR driver doesn't support.
* - (-EIO) if device is removed.
* - (-ENODEV) if *port_id* invalid.
*/
__rte_experimental
int rte_eth_fec_set(uint16_t port_id, uint32_t fec_capa);
/**
* Get current status of the Ethernet link flow control for Ethernet device
*

88
lib/librte_ethdev/rte_ethdev_driver.h
View File

@ -574,6 +574,87 @@ typedef int (*eth_tx_hairpin_queue_setup_t)
uint16_t nb_tx_desc,
const struct rte_eth_hairpin_conf *hairpin_conf);
/**
* @internal
* Get Forward Error Correction(FEC) capability.
*
* @param dev
* ethdev handle of port.
* @param speed_fec_capa
* speed_fec_capa is out only with per-speed capabilities.
* @param num
* a number of elements in an speed_fec_capa array.
*
* @return
* Negative errno value on error, positive value on success.
*
* @retval positive value
* A non-negative value lower or equal to num: success. The return value
* is the number of entries filled in the fec capa array.
* A non-negative value higher than num: error, the given fec capa array
* is too small. The return value corresponds to the num that should
* be given to succeed. The entries in the fec capa array are not valid
* and shall not be used by the caller.
* @retval -ENOTSUP
* Operation is not supported.
* @retval -EIO
* Device is removed.
* @retval -EINVAL
* *num* or *speed_fec_capa* invalid.
*/
typedef int (*eth_fec_get_capability_t)(struct rte_eth_dev *dev,
struct rte_eth_fec_capa *speed_fec_capa, unsigned int num);
/**
* @internal
* Get Forward Error Correction(FEC) mode.
*
* @param dev
* ethdev handle of port.
* @param fec_capa
* a bitmask of enabled FEC modes. If AUTO bit is set, other
* bits specify FEC modes which may be negotiated. If AUTO
* bit is clear, specify FEC modes to be used (only one valid
* mode per speed may be set).
*
* @return
* Negative errno value on error, 0 on success.
*
* @retval 0
* Success, get FEC success.
* @retval -ENOTSUP
* Operation is not supported.
* @retval -EIO
* Device is removed.
*/
typedef int (*eth_fec_get_t)(struct rte_eth_dev *dev,
uint32_t *fec_capa);
/**
* @internal
* Set Forward Error Correction(FEC) mode.
*
* @param dev
* ethdev handle of port.
* @param fec_capa
* bitmask of allowed FEC modes. It must be only one
* if AUTO is disabled. If AUTO is enabled, other
* bits specify FEC modes which may be negotiated.
*
* @return
* Negative errno value on error, 0 on success.
*
* @retval 0
* Success, set FEC success.
* @retval -ENOTSUP
* Operation is not supported.
* @retval -EINVAL
* Unsupported FEC mode requested.
* @retval -EIO
* Device is removed.
*/
typedef int (*eth_fec_set_t)(struct rte_eth_dev *dev, uint32_t fec_capa);
/**
* @internal A structure containing the functions exported by an Ethernet driver.
*/
@ -713,6 +794,13 @@ struct eth_dev_ops {
/**< Set up device RX hairpin queue. */
eth_tx_hairpin_queue_setup_t tx_hairpin_queue_setup;
/**< Set up device TX hairpin queue. */
eth_fec_get_capability_t fec_get_capability;
/**< Get Forward Error Correction(FEC) capability. */
eth_fec_get_t fec_get;
/**< Get Forward Error Correction(FEC) mode. */
eth_fec_set_t fec_set;
/**< Set Forward Error Correction(FEC) mode. */
};
/**

3
lib/librte_ethdev/rte_ethdev_version.map
View File

@ -229,6 +229,9 @@ EXPERIMENTAL {
# added in 20.11
rte_eth_link_speed_to_str;
rte_eth_link_to_str;
rte_eth_fec_get_capability;
rte_eth_fec_get;
rte_eth_fec_set;
};
INTERNAL {