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numam-dpdk/drivers/net/bnxt/bnxt_txr.h

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net/bnxt: convert to SPDX license tag Update the license header on bnxt files to be the standard BSD-3-Clause license used for the rest of DPDK, bring the files in compliance with the DPDK licensing policy. Signed-off-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
2018-04-02 22:34:32 +00:00
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2014-2018 Broadcom
* All rights reserved.
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
*/
#ifndef _BNXT_TXR_H_
#define _BNXT_TXR_H_
net/bnxt: use I/O device memory read/write API Replace the raw I/O device memory read/write access with eal abstraction for I/O device memory read/write access to fix portability issues across different architectures. CC: Stephen Hurd <stephen.hurd@broadcom.com> CC: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com> Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2017-01-18 01:21:29 +00:00
#include <rte_io.h>
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
#define MAX_TX_RINGS 16
#define BNXT_TX_PUSH_THRESH 92
net/bnxt: check for error conditions in Tx path The HW can have limits on the minimum packet size it can support, or the maximum number of segments it can support. Check for such possibilities. Also check if we are going to have a 0 length buffer. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com> Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
2019-05-15 18:08:14 +00:00
#define BNXT_MAX_TSO_SEGS 32
#define BNXT_MIN_PKT_SIZE 52
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
net/bnxt: use I/O device memory read/write API Replace the raw I/O device memory read/write access with eal abstraction for I/O device memory read/write access to fix portability issues across different architectures. CC: Stephen Hurd <stephen.hurd@broadcom.com> CC: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com> Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2017-01-18 01:21:29 +00:00
#define B_TX_DB(db, prod) rte_write32((DB_KEY_TX | (prod)), db)
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
struct bnxt_tx_ring_info {
uint16_t tx_prod;
uint16_t tx_cons;
net/bnxt: refactor doorbell handling Reduce code duplication and prepare for newer controllers that use different doorbell protocols by refactoring doorbell handling code. Signed-off-by: Lance Richardson <lance.richardson@broadcom.com> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2019-06-02 17:42:42 +00:00
struct bnxt_db_info tx_db;
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
struct tx_bd_long *tx_desc_ring;
struct bnxt_sw_tx_bd *tx_buf_ring;
drivers/net: rename physical address type to IOVA Renamed data type from phys_addr_t to rte_iova_t. Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com> Reviewed-by: Anatoly Burakov <anatoly.burakov@intel.com> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2017-10-20 12:31:31 +00:00
rte_iova_t tx_desc_mapping;
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
#define BNXT_DEV_STATE_CLOSING 0x1
uint32_t dev_state;
struct bnxt_ring *tx_ring_struct;
};
struct bnxt_sw_tx_bd {
struct rte_mbuf *mbuf; /* mbuf associated with TX descriptor */
uint8_t is_gso;
unsigned short nr_bds;
};
net/bnxt: move Tx bd checking to header file To allow sharing of tx_bds_in_hw() and bnxt_tx_avail() between vector-mode and non-vector transmit functions, move these functions into bnxt_txr.h. Signed-off-by: Lance Richardson <lance.richardson@broadcom.com> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2019-05-29 21:02:21 +00:00
static inline uint32_t bnxt_tx_bds_in_hw(struct bnxt_tx_queue *txq)
{
return ((txq->tx_ring->tx_prod - txq->tx_ring->tx_cons) &
txq->tx_ring->tx_ring_struct->ring_mask);
}
static inline uint32_t bnxt_tx_avail(struct bnxt_tx_queue *txq)
{
/* Tell compiler to fetch tx indices from memory. */
rte_compiler_barrier();
return ((txq->tx_ring->tx_ring_struct->ring_size -
bnxt_tx_bds_in_hw(txq)) - 1);
}
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
void bnxt_free_tx_rings(struct bnxt *bp);
int bnxt_init_one_tx_ring(struct bnxt_tx_queue *txq);
net/bnxt: allocate Rx/Tx and completion rings Perform allocation and free()ing of ring and information structures for the TX, RX, and completion rings. The previous patches had so far provided top level stubs and generic ring support, while this patch does the real allocation and freeing of the memory specific to each different type of generic ring. For example bnxt_init_tx_ring_struct() or bnxt_init_rx_ring_struct() is now allocating memory based on the socked_id being provided. bnxt_tx_queue_setup_op() or bnxt_rx_queue_setup_op() have gone through some reformatting to perform a graceful cleanup in case memory allocation fails. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:15 +00:00
int bnxt_init_tx_ring_struct(struct bnxt_tx_queue *txq, unsigned int socket_id);
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
uint16_t bnxt_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
net/bnxt: prevent device access when device is in reset Refactor init and uninit functions so that the driver can fail the eth_dev_ops callbacks and accessing Tx and Rx queues when device is in reset or in error state. Transmit and receive queues are freed during reset cleanup and reallocated during recovery. So we block all data path handling in this state. The eth_dev dev_started field is updated depending on the status of the device. Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Santoshkumar Karanappa Rastapur <santosh.rastapur@broadcom.com> Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
2019-10-02 01:23:22 +00:00
uint16_t bnxt_dummy_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
net/bnxt: support NEON Add bnxt vector PMD support using NEON SIMD instructions. Also update the 20.08 release notes with this information. Signed-off-by: Lance Richardson <lance.richardson@broadcom.com> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
2020-07-07 22:22:25 +00:00
#if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64)
net/bnxt: implement SSE vector mode Introduce SSE vector mode support for the bnxt pmd. Signed-off-by: Lance Richardson <lance.richardson@broadcom.com> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2019-05-29 21:02:23 +00:00
uint16_t bnxt_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
#endif
net/bnxt: support Rx/Tx queue start/stop Currently this is implemented entirely in the PMD as there is no explicit support in the HW. Re-program the RSS Table without this queue on stop and add it back to the table on start. Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2018-01-26 17:31:58 +00:00
int bnxt_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id);
int bnxt_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id);
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
net/bnxt: set checksum offload flags correctly We are not correctly setting hw checksum offload for all the offload flags. This patch fixes that. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2017-09-28 21:43:30 +00:00
#define PKT_TX_OIP_IIP_TCP_UDP_CKSUM (PKT_TX_TCP_CKSUM | PKT_TX_UDP_CKSUM | \
PKT_TX_IP_CKSUM | PKT_TX_OUTER_IP_CKSUM)
net/bnxt: fix HW Tx checksum offload check Add more checks for checksum calculation offload. Also check for tunnel frames and select the proper buffer descriptor size. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Xiaoxin Peng <xiaoxin.peng@broadcom.com> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Jason He <jason.he@broadcom.com> Reviewed-by: Qingmin Liu <qingmin.liu@broadcom.com>
2018-06-28 20:15:33 +00:00
#define PKT_TX_OIP_IIP_UDP_CKSUM (PKT_TX_UDP_CKSUM | \
PKT_TX_IP_CKSUM | PKT_TX_OUTER_IP_CKSUM)
#define PKT_TX_OIP_IIP_TCP_CKSUM (PKT_TX_TCP_CKSUM | \
PKT_TX_IP_CKSUM | PKT_TX_OUTER_IP_CKSUM)
net/bnxt: set checksum offload flags correctly We are not correctly setting hw checksum offload for all the offload flags. This patch fixes that. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2017-09-28 21:43:30 +00:00
#define PKT_TX_IIP_TCP_UDP_CKSUM (PKT_TX_TCP_CKSUM | PKT_TX_UDP_CKSUM | \
PKT_TX_IP_CKSUM)
net/bnxt: fix HW Tx checksum offload check Add more checks for checksum calculation offload. Also check for tunnel frames and select the proper buffer descriptor size. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Xiaoxin Peng <xiaoxin.peng@broadcom.com> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Jason He <jason.he@broadcom.com> Reviewed-by: Qingmin Liu <qingmin.liu@broadcom.com>
2018-06-28 20:15:33 +00:00
#define PKT_TX_IIP_TCP_CKSUM (PKT_TX_TCP_CKSUM | PKT_TX_IP_CKSUM)
#define PKT_TX_IIP_UDP_CKSUM (PKT_TX_UDP_CKSUM | PKT_TX_IP_CKSUM)
net/bnxt: set checksum offload flags correctly We are not correctly setting hw checksum offload for all the offload flags. This patch fixes that. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2017-09-28 21:43:30 +00:00
#define PKT_TX_OIP_TCP_UDP_CKSUM (PKT_TX_TCP_CKSUM | PKT_TX_UDP_CKSUM | \
PKT_TX_OUTER_IP_CKSUM)
net/bnxt: fix HW Tx checksum offload check Add more checks for checksum calculation offload. Also check for tunnel frames and select the proper buffer descriptor size. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Xiaoxin Peng <xiaoxin.peng@broadcom.com> Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Jason He <jason.he@broadcom.com> Reviewed-by: Qingmin Liu <qingmin.liu@broadcom.com>
2018-06-28 20:15:33 +00:00
#define PKT_TX_OIP_UDP_CKSUM (PKT_TX_UDP_CKSUM | \
PKT_TX_OUTER_IP_CKSUM)
#define PKT_TX_OIP_TCP_CKSUM (PKT_TX_TCP_CKSUM | \
PKT_TX_OUTER_IP_CKSUM)
net/bnxt: set checksum offload flags correctly We are not correctly setting hw checksum offload for all the offload flags. This patch fixes that. Fixes: 6eb3cc2294fd ("net/bnxt: add initial Tx code") Cc: stable@dpdk.org Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
2017-09-28 21:43:30 +00:00
#define PKT_TX_OIP_IIP_CKSUM (PKT_TX_IP_CKSUM | \
PKT_TX_OUTER_IP_CKSUM)
#define PKT_TX_TCP_UDP_CKSUM (PKT_TX_TCP_CKSUM | PKT_TX_UDP_CKSUM)
#define TX_BD_FLG_TIP_IP_TCP_UDP_CHKSUM (TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM | \
TX_BD_LONG_LFLAGS_T_IP_CHKSUM | \
TX_BD_LONG_LFLAGS_IP_CHKSUM)
#define TX_BD_FLG_IP_TCP_UDP_CHKSUM (TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM | \
TX_BD_LONG_LFLAGS_IP_CHKSUM)
#define TX_BD_FLG_TIP_IP_CHKSUM (TX_BD_LONG_LFLAGS_T_IP_CHKSUM | \
TX_BD_LONG_LFLAGS_IP_CHKSUM)
#define TX_BD_FLG_TIP_TCP_UDP_CHKSUM (TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM | \
TX_BD_LONG_LFLAGS_T_IP_CHKSUM)
net/bnxt: add initial Tx code Initial implementation of tx_pkt_burst for transmit. bnxt_xmit_pkts() is the top level function that is called during Tx. bnxt_handle_tx_cp() is used to check and process the Tx completions generated for the Tx Buffer Descriptors sent by the hardware. This patch also adds code to allocate rings in the hardware. For each Tx queue allocated in the PMD driver, a corresponding ring in hardware will be created. Every time a Tx request is initiated via the bnxt_xmit_pkts() call, a Buffer Descriptor is created and is sent to the hardware via the associated Tx ring. On completing the Tx operation, the hardware will generates the status in the form of a completion. This completion is processed by the bnxt_handle_tx_cp() function. Functions like bnxt_init_tx_ring_struct() and bnxt_init_one_tx_ring() are used to initialize various members of the structure before starting Tx operations. Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Signed-off-by: Stephen Hurd <stephen.hurd@broadcom.com> Reviewed-by: David Christensen <david.christensen@broadcom.com>
2016-06-15 21:23:13 +00:00
#endif
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