mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 09:36:42 +07:00
7a97bc03e0
When eth1394 was unable to acquire a transaction label, it just dropped outgoing packets without attempt to resend them later. The transmit queue is now halted if no tlabel is available to ->hard_start_xmit(). A workqueue job is then scheduled to catch the moment when ieee1394 recycled the next lot of tlabels. Fixes http://bugzilla.kernel.org/show_bug.cgi?id=8402 Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
236 lines
6.4 KiB
C
236 lines
6.4 KiB
C
/*
|
|
* eth1394.h -- Ethernet driver for Linux IEEE-1394 Subsystem
|
|
*
|
|
* Copyright (C) 2000 Bonin Franck <boninf@free.fr>
|
|
* (C) 2001 Ben Collins <bcollins@debian.org>
|
|
*
|
|
* Mainly based on work by Emanuel Pirker and Andreas E. Bombe
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef __ETH1394_H
|
|
#define __ETH1394_H
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
#include "ieee1394.h"
|
|
#include "ieee1394_types.h"
|
|
|
|
/* Register for incoming packets. This is 4096 bytes, which supports up to
|
|
* S3200 (per Table 16-3 of IEEE 1394b-2002). */
|
|
#define ETHER1394_REGION_ADDR_LEN 4096
|
|
|
|
/* GASP identifier numbers for IPv4 over IEEE 1394 */
|
|
#define ETHER1394_GASP_SPECIFIER_ID 0x00005E
|
|
#define ETHER1394_GASP_SPECIFIER_ID_HI ((0x00005E >> 8) & 0xffff)
|
|
#define ETHER1394_GASP_SPECIFIER_ID_LO (0x00005E & 0xff)
|
|
#define ETHER1394_GASP_VERSION 1
|
|
|
|
#define ETHER1394_GASP_OVERHEAD (2 * sizeof(quadlet_t)) /* for GASP header */
|
|
|
|
#define ETHER1394_GASP_BUFFERS 16
|
|
|
|
#define NODE_SET (ALL_NODES + 1) /* Node set == 64 */
|
|
|
|
enum eth1394_bc_states { ETHER1394_BC_ERROR,
|
|
ETHER1394_BC_RUNNING,
|
|
ETHER1394_BC_STOPPED };
|
|
|
|
|
|
/* Private structure for our ethernet driver */
|
|
struct eth1394_priv {
|
|
struct net_device_stats stats; /* Device stats */
|
|
struct hpsb_host *host; /* The card for this dev */
|
|
u16 bc_maxpayload; /* Max broadcast payload */
|
|
u8 bc_sspd; /* Max broadcast speed */
|
|
u64 local_fifo; /* Local FIFO Address */
|
|
spinlock_t lock; /* Private lock */
|
|
int broadcast_channel; /* Async stream Broadcast Channel */
|
|
enum eth1394_bc_states bc_state; /* broadcast channel state */
|
|
struct hpsb_iso *iso; /* Async stream recv handle */
|
|
int bc_dgl; /* Outgoing broadcast datagram label */
|
|
struct list_head ip_node_list; /* List of IP capable nodes */
|
|
struct unit_directory *ud_list[ALL_NODES]; /* Cached unit dir list */
|
|
|
|
struct work_struct wake; /* Wake up after xmit failure */
|
|
struct net_device *wake_dev; /* Stupid backlink for .wake */
|
|
nodeid_t wake_node; /* Destination of failed xmit */
|
|
};
|
|
|
|
|
|
/* Define a fake hardware header format for the networking core. Note that
|
|
* header size cannot exceed 16 bytes as that is the size of the header cache.
|
|
* Also, we do not need the source address in the header so we omit it and
|
|
* keep the header to under 16 bytes */
|
|
#define ETH1394_ALEN (8)
|
|
#define ETH1394_HLEN (10)
|
|
|
|
struct eth1394hdr {
|
|
unsigned char h_dest[ETH1394_ALEN]; /* destination eth1394 addr */
|
|
unsigned short h_proto; /* packet type ID field */
|
|
} __attribute__((packed));
|
|
|
|
static inline struct eth1394hdr *eth1394_hdr(const struct sk_buff *skb)
|
|
{
|
|
return (struct eth1394hdr *)skb_mac_header(skb);
|
|
}
|
|
|
|
typedef enum {ETH1394_GASP, ETH1394_WRREQ} eth1394_tx_type;
|
|
|
|
/* IP1394 headers */
|
|
|
|
/* Unfragmented */
|
|
#if defined __BIG_ENDIAN_BITFIELD
|
|
struct eth1394_uf_hdr {
|
|
u16 lf:2;
|
|
u16 res:14;
|
|
u16 ether_type; /* Ethernet packet type */
|
|
} __attribute__((packed));
|
|
#elif defined __LITTLE_ENDIAN_BITFIELD
|
|
struct eth1394_uf_hdr {
|
|
u16 res:14;
|
|
u16 lf:2;
|
|
u16 ether_type;
|
|
} __attribute__((packed));
|
|
#else
|
|
#error Unknown bit field type
|
|
#endif
|
|
|
|
/* First fragment */
|
|
#if defined __BIG_ENDIAN_BITFIELD
|
|
struct eth1394_ff_hdr {
|
|
u16 lf:2;
|
|
u16 res1:2;
|
|
u16 dg_size:12; /* Datagram size */
|
|
u16 ether_type; /* Ethernet packet type */
|
|
u16 dgl; /* Datagram label */
|
|
u16 res2;
|
|
} __attribute__((packed));
|
|
#elif defined __LITTLE_ENDIAN_BITFIELD
|
|
struct eth1394_ff_hdr {
|
|
u16 dg_size:12;
|
|
u16 res1:2;
|
|
u16 lf:2;
|
|
u16 ether_type;
|
|
u16 dgl;
|
|
u16 res2;
|
|
} __attribute__((packed));
|
|
#else
|
|
#error Unknown bit field type
|
|
#endif
|
|
|
|
/* XXX: Subsequent fragments, including last */
|
|
#if defined __BIG_ENDIAN_BITFIELD
|
|
struct eth1394_sf_hdr {
|
|
u16 lf:2;
|
|
u16 res1:2;
|
|
u16 dg_size:12; /* Datagram size */
|
|
u16 res2:4;
|
|
u16 fg_off:12; /* Fragment offset */
|
|
u16 dgl; /* Datagram label */
|
|
u16 res3;
|
|
} __attribute__((packed));
|
|
#elif defined __LITTLE_ENDIAN_BITFIELD
|
|
struct eth1394_sf_hdr {
|
|
u16 dg_size:12;
|
|
u16 res1:2;
|
|
u16 lf:2;
|
|
u16 fg_off:12;
|
|
u16 res2:4;
|
|
u16 dgl;
|
|
u16 res3;
|
|
} __attribute__((packed));
|
|
#else
|
|
#error Unknown bit field type
|
|
#endif
|
|
|
|
#if defined __BIG_ENDIAN_BITFIELD
|
|
struct eth1394_common_hdr {
|
|
u16 lf:2;
|
|
u16 pad1:14;
|
|
} __attribute__((packed));
|
|
#elif defined __LITTLE_ENDIAN_BITFIELD
|
|
struct eth1394_common_hdr {
|
|
u16 pad1:14;
|
|
u16 lf:2;
|
|
} __attribute__((packed));
|
|
#else
|
|
#error Unknown bit field type
|
|
#endif
|
|
|
|
struct eth1394_hdr_words {
|
|
u16 word1;
|
|
u16 word2;
|
|
u16 word3;
|
|
u16 word4;
|
|
};
|
|
|
|
union eth1394_hdr {
|
|
struct eth1394_common_hdr common;
|
|
struct eth1394_uf_hdr uf;
|
|
struct eth1394_ff_hdr ff;
|
|
struct eth1394_sf_hdr sf;
|
|
struct eth1394_hdr_words words;
|
|
};
|
|
|
|
/* End of IP1394 headers */
|
|
|
|
/* Fragment types */
|
|
#define ETH1394_HDR_LF_UF 0 /* unfragmented */
|
|
#define ETH1394_HDR_LF_FF 1 /* first fragment */
|
|
#define ETH1394_HDR_LF_LF 2 /* last fragment */
|
|
#define ETH1394_HDR_LF_IF 3 /* interior fragment */
|
|
|
|
#define IP1394_HW_ADDR_LEN 16 /* As per RFC */
|
|
|
|
/* Our arp packet (ARPHRD_IEEE1394) */
|
|
struct eth1394_arp {
|
|
u16 hw_type; /* 0x0018 */
|
|
u16 proto_type; /* 0x0806 */
|
|
u8 hw_addr_len; /* 16 */
|
|
u8 ip_addr_len; /* 4 */
|
|
u16 opcode; /* ARP Opcode */
|
|
/* Above is exactly the same format as struct arphdr */
|
|
|
|
u64 s_uniq_id; /* Sender's 64bit EUI */
|
|
u8 max_rec; /* Sender's max packet size */
|
|
u8 sspd; /* Sender's max speed */
|
|
u16 fifo_hi; /* hi 16bits of sender's FIFO addr */
|
|
u32 fifo_lo; /* lo 32bits of sender's FIFO addr */
|
|
u32 sip; /* Sender's IP Address */
|
|
u32 tip; /* IP Address of requested hw addr */
|
|
};
|
|
|
|
/* Network timeout */
|
|
#define ETHER1394_TIMEOUT 100000
|
|
|
|
/* This is our task struct. It's used for the packet complete callback. */
|
|
struct packet_task {
|
|
struct sk_buff *skb;
|
|
int outstanding_pkts;
|
|
eth1394_tx_type tx_type;
|
|
int max_payload;
|
|
struct hpsb_packet *packet;
|
|
struct eth1394_priv *priv;
|
|
union eth1394_hdr hdr;
|
|
u64 addr;
|
|
u16 dest_node;
|
|
};
|
|
|
|
#endif /* __ETH1394_H */
|