74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2016 Chelsio Communications, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#ifndef __CXGBIT_LRO_H__
|
|
#define __CXGBIT_LRO_H__
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#define LRO_FLUSH_LEN_MAX 65535
|
|
|
|
struct cxgbit_lro_cb {
|
|
struct cxgbit_sock *csk;
|
|
u32 pdu_totallen;
|
|
u32 offset;
|
|
u8 pdu_idx;
|
|
bool complete;
|
|
};
|
|
|
|
enum cxgbit_pducb_flags {
|
|
PDUCBF_RX_HDR = (1 << 0), /* received pdu header */
|
|
PDUCBF_RX_DATA = (1 << 1), /* received pdu payload */
|
|
PDUCBF_RX_STATUS = (1 << 2), /* received ddp status */
|
|
PDUCBF_RX_DATA_DDPD = (1 << 3), /* pdu payload ddp'd */
|
|
PDUCBF_RX_DDP_CMP = (1 << 4), /* ddp completion */
|
|
PDUCBF_RX_HCRC_ERR = (1 << 5), /* header digest error */
|
|
PDUCBF_RX_DCRC_ERR = (1 << 6), /* data digest error */
|
|
};
|
|
|
|
struct cxgbit_lro_pdu_cb {
|
|
u8 flags;
|
|
u8 frags;
|
|
u8 hfrag_idx;
|
|
u8 nr_dfrags;
|
|
u8 dfrag_idx;
|
|
bool complete;
|
|
u32 seq;
|
|
u32 pdulen;
|
|
u32 hlen;
|
|
u32 dlen;
|
|
u32 doffset;
|
|
u32 ddigest;
|
|
void *hdr;
|
|
};
|
|
|
|
#define LRO_SKB_MAX_HEADROOM \
|
|
(sizeof(struct cxgbit_lro_cb) + \
|
|
(MAX_SKB_FRAGS * sizeof(struct cxgbit_lro_pdu_cb)))
|
|
|
|
#define LRO_SKB_MIN_HEADROOM \
|
|
(sizeof(struct cxgbit_lro_cb) + \
|
|
sizeof(struct cxgbit_lro_pdu_cb))
|
|
|
|
#define cxgbit_skb_lro_cb(skb) ((struct cxgbit_lro_cb *)skb->data)
|
|
#define cxgbit_skb_lro_pdu_cb(skb, i) \
|
|
((struct cxgbit_lro_pdu_cb *)(skb->data + sizeof(struct cxgbit_lro_cb) \
|
|
+ (i * sizeof(struct cxgbit_lro_pdu_cb))))
|
|
|
|
#define CPL_RX_ISCSI_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */
|
|
#define CPL_RX_ISCSI_DDP_STATUS_PAD_SHIFT 19 /* pad error */
|
|
#define CPL_RX_ISCSI_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */
|
|
#define CPL_RX_ISCSI_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */
|
|
|
|
#endif /*__CXGBIT_LRO_H_*/
|