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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fc47ff6b1b
Comment from "Andrew Morton <akpm@linux-foundation.org>"
> +{
> + return (struct fcoe_softc *)lport_priv(lp);
unneeded/undesirable cast of void*. There are probably zillions of
instances of this - there always are.
This whole inline function was unnecessary. The FCoE layer knows
that it's data structure is stored in the lport private data, it
can just access it from lport_priv().
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
171 lines
4.6 KiB
C
171 lines
4.6 KiB
C
/*
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* Copyright(c) 2007 - 2008 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Maintained at www.Open-FCoE.org
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*/
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#ifndef _LIBFCOE_H
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#define _LIBFCOE_H
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <scsi/fc/fc_fcoe.h>
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#include <scsi/libfc.h>
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/*
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* this percpu struct for fcoe
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*/
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struct fcoe_percpu_s {
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int cpu;
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struct task_struct *thread;
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struct sk_buff_head fcoe_rx_list;
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struct page *crc_eof_page;
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int crc_eof_offset;
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};
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/*
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* the fcoe sw transport private data
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*/
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struct fcoe_softc {
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struct list_head list;
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struct fc_lport *lp;
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struct net_device *real_dev;
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struct net_device *phys_dev; /* device with ethtool_ops */
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struct packet_type fcoe_packet_type;
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struct sk_buff_head fcoe_pending_queue;
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u8 dest_addr[ETH_ALEN];
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u8 ctl_src_addr[ETH_ALEN];
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u8 data_src_addr[ETH_ALEN];
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/*
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* fcoe protocol address learning related stuff
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*/
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u16 flogi_oxid;
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u8 flogi_progress;
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u8 address_mode;
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};
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static inline struct net_device *fcoe_netdev(
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const struct fc_lport *lp)
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{
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return ((struct fcoe_softc *)lport_priv(lp))->real_dev;
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}
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static inline struct fcoe_hdr *skb_fcoe_header(const struct sk_buff *skb)
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{
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return (struct fcoe_hdr *)skb_network_header(skb);
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}
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static inline int skb_fcoe_offset(const struct sk_buff *skb)
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{
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return skb_network_offset(skb);
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}
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static inline struct fc_frame_header *skb_fc_header(const struct sk_buff *skb)
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{
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return (struct fc_frame_header *)skb_transport_header(skb);
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}
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static inline int skb_fc_offset(const struct sk_buff *skb)
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{
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return skb_transport_offset(skb);
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}
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static inline void skb_reset_fc_header(struct sk_buff *skb)
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{
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skb_reset_network_header(skb);
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skb_set_transport_header(skb, skb_network_offset(skb) +
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sizeof(struct fcoe_hdr));
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}
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static inline bool skb_fc_is_data(const struct sk_buff *skb)
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{
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return skb_fc_header(skb)->fh_r_ctl == FC_RCTL_DD_SOL_DATA;
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}
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static inline bool skb_fc_is_cmd(const struct sk_buff *skb)
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{
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return skb_fc_header(skb)->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD;
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}
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static inline bool skb_fc_has_exthdr(const struct sk_buff *skb)
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{
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return (skb_fc_header(skb)->fh_r_ctl == FC_RCTL_VFTH) ||
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(skb_fc_header(skb)->fh_r_ctl == FC_RCTL_IFRH) ||
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(skb_fc_header(skb)->fh_r_ctl == FC_RCTL_ENCH);
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}
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static inline bool skb_fc_is_roff(const struct sk_buff *skb)
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{
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return skb_fc_header(skb)->fh_f_ctl[2] & FC_FC_REL_OFF;
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}
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static inline u16 skb_fc_oxid(const struct sk_buff *skb)
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{
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return be16_to_cpu(skb_fc_header(skb)->fh_ox_id);
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}
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static inline u16 skb_fc_rxid(const struct sk_buff *skb)
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{
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return be16_to_cpu(skb_fc_header(skb)->fh_rx_id);
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}
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/* FIXME - DMA_BIDIRECTIONAL ? */
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#define skb_cb(skb) ((struct fcoe_rcv_info *)&((skb)->cb[0]))
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#define skb_cmd(skb) (skb_cb(skb)->fr_cmd)
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#define skb_dir(skb) (skb_cmd(skb)->sc_data_direction)
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static inline bool skb_fc_is_read(const struct sk_buff *skb)
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{
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if (skb_fc_is_cmd(skb) && skb_cmd(skb))
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return skb_dir(skb) == DMA_FROM_DEVICE;
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return false;
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}
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static inline bool skb_fc_is_write(const struct sk_buff *skb)
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{
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if (skb_fc_is_cmd(skb) && skb_cmd(skb))
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return skb_dir(skb) == DMA_TO_DEVICE;
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return false;
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}
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/* libfcoe funcs */
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int fcoe_reset(struct Scsi_Host *shost);
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u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
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unsigned int scheme, unsigned int port);
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u32 fcoe_fc_crc(struct fc_frame *fp);
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int fcoe_xmit(struct fc_lport *, struct fc_frame *);
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int fcoe_rcv(struct sk_buff *, struct net_device *,
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struct packet_type *, struct net_device *);
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int fcoe_percpu_receive_thread(void *arg);
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void fcoe_clean_pending_queue(struct fc_lport *lp);
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void fcoe_percpu_clean(struct fc_lport *lp);
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void fcoe_watchdog(ulong vp);
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int fcoe_link_ok(struct fc_lport *lp);
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struct fc_lport *fcoe_hostlist_lookup(const struct net_device *);
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int fcoe_hostlist_add(const struct fc_lport *);
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int fcoe_hostlist_remove(const struct fc_lport *);
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struct Scsi_Host *fcoe_host_alloc(struct scsi_host_template *, int);
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int fcoe_libfc_config(struct fc_lport *, struct libfc_function_template *);
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/* fcoe sw hba */
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int __init fcoe_sw_init(void);
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int __exit fcoe_sw_exit(void);
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#endif /* _LIBFCOE_H */
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