4d44217b06
The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition.
If the Ether overhead is larger than 18 when it supports VLAN tag,
that will cause the jumbo flag rx offload is wrong when MTU size is
'RTE_ETHER_MTU'.
This fix will normalize the boundary condition with 'RTE_ETHER_MTU'
and overhead even though current overhead is 18.
Fixes: 5d5589b0c8 ("net/enetc: support MTU update and jumbo frames")
Cc: stable@dpdk.org
Signed-off-by: Steve Yang <stevex.yang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2018-2019 NXP
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*/
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#ifndef _ENETC_H_
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#define _ENETC_H_
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#include <rte_time.h>
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#include "base/enetc_hw.h"
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#define PCI_VENDOR_ID_FREESCALE 0x1957
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/* Max TX rings per ENETC. */
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#define MAX_TX_RINGS 2
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/* Max RX rings per ENTEC. */
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#define MAX_RX_RINGS 1
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/* Max BD counts per Ring. */
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#define MAX_BD_COUNT 64000
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/* Min BD counts per Ring. */
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#define MIN_BD_COUNT 32
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/* BD ALIGN */
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#define BD_ALIGN 8
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/* minimum frame size supported */
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#define ENETC_MAC_MINFRM_SIZE 68
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/* maximum frame size supported */
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#define ENETC_MAC_MAXFRM_SIZE 9600
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/* The max frame size with default MTU */
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#define ENETC_ETH_MAX_LEN (RTE_ETHER_MTU + \
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RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN)
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/*
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* upper_32_bits - return bits 32-63 of a number
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* @n: the number we're accessing
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*
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* A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
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* the "right shift count >= width of type" warning when that quantity is
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* 32-bits.
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*/
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#define upper_32_bits(n) ((uint32_t)(((n) >> 16) >> 16))
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/*
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* lower_32_bits - return bits 0-31 of a number
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* @n: the number we're accessing
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*/
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#define lower_32_bits(n) ((uint32_t)(n))
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#define ENETC_TXBD(BDR, i) (&(((struct enetc_tx_bd *)((BDR).bd_base))[i]))
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#define ENETC_RXBD(BDR, i) (&(((union enetc_rx_bd *)((BDR).bd_base))[i]))
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struct enetc_swbd {
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struct rte_mbuf *buffer_addr;
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};
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struct enetc_bdr {
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void *bd_base; /* points to Rx or Tx BD ring */
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struct enetc_swbd *q_swbd;
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union {
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void *tcir;
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void *rcir;
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};
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int bd_count; /* # of BDs */
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int next_to_use;
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int next_to_clean;
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uint16_t index;
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uint8_t crc_len; /* 0 if CRC stripped, 4 otherwise */
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union {
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void *tcisr; /* Tx */
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int next_to_alloc; /* Rx */
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};
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struct rte_mempool *mb_pool; /* mbuf pool to populate RX ring. */
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struct rte_eth_dev *ndev;
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};
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/*
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* Structure to store private data for each driver instance (for each port).
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*/
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struct enetc_eth_adapter {
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struct rte_eth_dev *ndev;
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struct enetc_eth_hw hw;
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};
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#define ENETC_DEV_PRIVATE(adapter) \
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((struct enetc_eth_adapter *)adapter)
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#define ENETC_DEV_PRIVATE_TO_HW(adapter) \
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(&((struct enetc_eth_adapter *)adapter)->hw)
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#define ENETC_DEV_PRIVATE_TO_STATS(adapter) \
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(&((struct enetc_eth_adapter *)adapter)->stats)
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#define ENETC_DEV_PRIVATE_TO_INTR(adapter) \
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(&((struct enetc_eth_adapter *)adapter)->intr)
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/*
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* RX/TX ENETC function prototypes
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*/
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uint16_t enetc_xmit_pkts(void *txq, struct rte_mbuf **tx_pkts,
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uint16_t nb_pkts);
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uint16_t enetc_recv_pkts(void *rxq, struct rte_mbuf **rx_pkts,
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uint16_t nb_pkts);
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int enetc_refill_rx_ring(struct enetc_bdr *rx_ring, const int buff_cnt);
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static inline int
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enetc_bd_unused(struct enetc_bdr *bdr)
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{
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if (bdr->next_to_clean > bdr->next_to_use)
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return bdr->next_to_clean - bdr->next_to_use - 1;
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return bdr->bd_count + bdr->next_to_clean - bdr->next_to_use - 1;
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}
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#endif /* _ENETC_H_ */
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