net.c revision 110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6
1c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason/* 2c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * IPv4 over IEEE 1394, per RFC 2734 3c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * 4c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Copyright (C) 2009 Jay Fenlason <fenlason@redhat.com> 5c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * 6c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * based on eth1394 by Ben Collins et al 7c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 8c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 9f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#include <linux/bug.h> 10c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/device.h> 11c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/ethtool.h> 12c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/firewire.h> 13c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/firewire-constants.h> 14c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/highmem.h> 15c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/in.h> 16c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/ip.h> 17f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#include <linux/jiffies.h> 18c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/mod_devicetable.h> 19c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/module.h> 20c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/moduleparam.h> 215a124d382ea5c97be43c779e4f481455e0287654Stefan Richter#include <linux/mutex.h> 22c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/netdevice.h> 23c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <linux/skbuff.h> 245a124d382ea5c97be43c779e4f481455e0287654Stefan Richter#include <linux/spinlock.h> 25c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 26c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <asm/unaligned.h> 27c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#include <net/arp.h> 28c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 29f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define FWNET_MAX_FRAGMENTS 25 /* arbitrary limit */ 30f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define FWNET_ISO_PAGE_COUNT (PAGE_SIZE < 16 * 1024 ? 4 : 2) 31c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 32f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define IEEE1394_BROADCAST_CHANNEL 31 33f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define IEEE1394_ALL_NODES (0xffc0 | 0x003f) 34f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define IEEE1394_MAX_PAYLOAD_S100 512 35f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define FWNET_NO_FIFO_ADDR (~0ULL) 36c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 37f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define IANA_SPECIFIER_ID 0x00005eU 38f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2734_SW_VERSION 0x000001U 39c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 40f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define IEEE1394_GASP_HDR_SIZE 8 41c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 42f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2374_UNFRAG_HDR_SIZE 4 43f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2374_FRAG_HDR_SIZE 8 44f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2374_FRAG_OVERHEAD 4 45c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 46f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2374_HDR_UNFRAG 0 /* unfragmented */ 47f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2374_HDR_FIRSTFRAG 1 /* first fragment */ 48f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2374_HDR_LASTFRAG 2 /* last fragment */ 49f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2374_HDR_INTFRAG 3 /* interior fragment */ 50c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 51f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define RFC2734_HW_ADDR_LEN 16 52c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 53f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstruct rfc2734_arp { 54f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be16 hw_type; /* 0x0018 */ 55f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be16 proto_type; /* 0x0806 */ 56f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u8 hw_addr_len; /* 16 */ 57f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u8 ip_addr_len; /* 4 */ 58f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be16 opcode; /* ARP Opcode */ 59f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* Above is exactly the same format as struct arphdr */ 60c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 61f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be64 s_uniq_id; /* Sender's 64bit EUI */ 62f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u8 max_rec; /* Sender's max packet size */ 63f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u8 sspd; /* Sender's max speed */ 64f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be16 fifo_hi; /* hi 16bits of sender's FIFO addr */ 65f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be32 fifo_lo; /* lo 32bits of sender's FIFO addr */ 66f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be32 sip; /* Sender's IP Address */ 67f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be32 tip; /* IP Address of requested hw addr */ 68f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter} __attribute__((packed)); 69c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 70f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter/* This header format is specific to this driver implementation. */ 71f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define FWNET_ALEN 8 72f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define FWNET_HLEN 10 73f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstruct fwnet_header { 74f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u8 h_dest[FWNET_ALEN]; /* destination address */ 75f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be16 h_proto; /* packet type ID field */ 76f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter} __attribute__((packed)); 77c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 78f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter/* IPv4 and IPv6 encapsulation header */ 79f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstruct rfc2734_header { 80c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u32 w0; 81c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u32 w1; 82c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 83c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 84f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_get_hdr_lf(h) (((h)->w0 & 0xc0000000) >> 30) 85f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_get_hdr_ether_type(h) (((h)->w0 & 0x0000ffff)) 86f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_get_hdr_dg_size(h) (((h)->w0 & 0x0fff0000) >> 16) 87f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_get_hdr_fg_off(h) (((h)->w0 & 0x00000fff)) 88f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_get_hdr_dgl(h) (((h)->w1 & 0xffff0000) >> 16) 89c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 90f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_set_hdr_lf(lf) ((lf) << 30) 91f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_set_hdr_ether_type(et) (et) 92f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_set_hdr_dg_size(dgs) ((dgs) << 16) 93f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_set_hdr_fg_off(fgo) (fgo) 94c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 95f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter#define fwnet_set_hdr_dgl(dgl) ((dgl) << 16) 96c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 97f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic inline void fwnet_make_uf_hdr(struct rfc2734_header *hdr, 98f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter unsigned ether_type) 99f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 100f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter hdr->w0 = fwnet_set_hdr_lf(RFC2374_HDR_UNFRAG) 101f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter | fwnet_set_hdr_ether_type(ether_type); 102f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter} 103c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 104f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic inline void fwnet_make_ff_hdr(struct rfc2734_header *hdr, 105f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter unsigned ether_type, unsigned dg_size, unsigned dgl) 106f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 107f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter hdr->w0 = fwnet_set_hdr_lf(RFC2374_HDR_FIRSTFRAG) 108f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter | fwnet_set_hdr_dg_size(dg_size) 109f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter | fwnet_set_hdr_ether_type(ether_type); 110f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter hdr->w1 = fwnet_set_hdr_dgl(dgl); 111f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter} 112c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 113f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic inline void fwnet_make_sf_hdr(struct rfc2734_header *hdr, 114f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter unsigned lf, unsigned dg_size, unsigned fg_off, unsigned dgl) 115f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 116f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter hdr->w0 = fwnet_set_hdr_lf(lf) 117f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter | fwnet_set_hdr_dg_size(dg_size) 118f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter | fwnet_set_hdr_fg_off(fg_off); 119f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter hdr->w1 = fwnet_set_hdr_dgl(dgl); 120f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter} 121c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 122c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason/* This list keeps track of what parts of the datagram have been filled in */ 123f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstruct fwnet_fragment_info { 124f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct list_head fi_link; 125c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 offset; 126c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 len; 127c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 128c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 129f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstruct fwnet_partial_datagram { 130f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct list_head pd_link; 131f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct list_head fi_list; 132c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct sk_buff *skb; 133c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* FIXME Why not use skb->data? */ 134c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason char *pbuf; 135c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 datagram_label; 136c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 ether_type; 137c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 datagram_size; 138c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 139c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1405a124d382ea5c97be43c779e4f481455e0287654Stefan Richterstatic DEFINE_MUTEX(fwnet_device_mutex); 1415a124d382ea5c97be43c779e4f481455e0287654Stefan Richterstatic LIST_HEAD(fwnet_device_list); 142c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 143f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstruct fwnet_device { 1445a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct list_head dev_link; 145c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason spinlock_t lock; 146f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter enum { 147f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter FWNET_BROADCAST_ERROR, 148f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter FWNET_BROADCAST_RUNNING, 149f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter FWNET_BROADCAST_STOPPED, 150f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter } broadcast_state; 151c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_iso_context *broadcast_rcv_context; 152c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_iso_buffer broadcast_rcv_buffer; 153c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason void **broadcast_rcv_buffer_ptrs; 154c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned broadcast_rcv_next_ptr; 155c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned num_broadcast_rcv_ptrs; 156c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned rcv_buffer_size; 157c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 158c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * This value is the maximum unfragmented datagram size that can be 159c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * sent by the hardware. It already has the GASP overhead and the 160c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * unfragmented datagram header overhead calculated into it. 161c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 162c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned broadcast_xmt_max_payload; 163c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 broadcast_xmt_datagramlabel; 164c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 165c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 166f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * The CSR address that remote nodes must send datagrams to for us to 167c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * receive them. 168c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 169c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_address_handler handler; 170c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u64 local_fifo; 171c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 172c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* List of packets to be sent */ 173c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct list_head packet_list; 174c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 175c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * List of packets that were broadcasted. When we get an ISO interrupt 176c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * one of them has been sent 177c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 178c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct list_head broadcasted_list; 179c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* List of packets that have been sent but not yet acked */ 180c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct list_head sent_list; 181c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1825a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct list_head peer_list; 183c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_card *card; 1845a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct net_device *netdev; 1855a124d382ea5c97be43c779e4f481455e0287654Stefan Richter}; 1865a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1875a124d382ea5c97be43c779e4f481455e0287654Stefan Richterstruct fwnet_peer { 1885a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct list_head peer_link; 1895a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_device *dev; 1905a124d382ea5c97be43c779e4f481455e0287654Stefan Richter u64 guid; 1915a124d382ea5c97be43c779e4f481455e0287654Stefan Richter u64 fifo; 1925a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1935a124d382ea5c97be43c779e4f481455e0287654Stefan Richter /* guarded by dev->lock */ 1945a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct list_head pd_list; /* received partial datagrams */ 1955a124d382ea5c97be43c779e4f481455e0287654Stefan Richter unsigned pdg_size; /* pd_list size */ 1965a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1975a124d382ea5c97be43c779e4f481455e0287654Stefan Richter u16 datagram_label; /* outgoing datagram label */ 1985a124d382ea5c97be43c779e4f481455e0287654Stefan Richter unsigned max_payload; /* includes RFC2374_FRAG_HDR_SIZE overhead */ 1995a124d382ea5c97be43c779e4f481455e0287654Stefan Richter int node_id; 2005a124d382ea5c97be43c779e4f481455e0287654Stefan Richter int generation; 2015a124d382ea5c97be43c779e4f481455e0287654Stefan Richter unsigned speed; 202c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 203c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 204c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason/* This is our task struct. It's used for the packet complete callback. */ 205f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstruct fwnet_packet_task { 206c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 207f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * ptask can actually be on dev->packet_list, dev->broadcasted_list, 208f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * or dev->sent_list depending on its current state. 209c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 210f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct list_head pt_link; 211c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_transaction transaction; 212f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct rfc2734_header hdr; 213c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct sk_buff *skb; 214f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_device *dev; 215f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 216c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int outstanding_pkts; 217c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned max_payload; 218c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u64 fifo_addr; 219c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 dest_node; 220c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u8 generation; 221c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u8 speed; 222c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 223c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 224f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter/* 225f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * saddr == NULL means use device source address. 226f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * daddr == NULL means leave destination address (eg unresolved arp). 227f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter */ 228f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_header_create(struct sk_buff *skb, struct net_device *net, 229f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter unsigned short type, const void *daddr, 230f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter const void *saddr, unsigned len) 231f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 232f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_header *h; 233c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 234f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter h = (struct fwnet_header *)skb_push(skb, sizeof(*h)); 235f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be16(type, &h->h_proto); 236c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 237f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (net->flags & (IFF_LOOPBACK | IFF_NOARP)) { 238f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter memset(h->h_dest, 0, net->addr_len); 239c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 240f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return net->hard_header_len; 241c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 242c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 243c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (daddr) { 244f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter memcpy(h->h_dest, daddr, net->addr_len); 245f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 246f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return net->hard_header_len; 247c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 248c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 249f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return -net->hard_header_len; 250c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 251c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 252f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_header_rebuild(struct sk_buff *skb) 253c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason{ 254f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_header *h = (struct fwnet_header *)skb->data; 255c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 256f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (get_unaligned_be16(&h->h_proto) == ETH_P_IP) 257f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return arp_find((unsigned char *)&h->h_dest, skb); 258c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 259f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_notify("%s: unable to resolve type %04x addresses\n", 260f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb->dev->name, be16_to_cpu(h->h_proto)); 261c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 262c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 263c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 264f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_header_cache(const struct neighbour *neigh, 265f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct hh_cache *hh) 266f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 267f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct net_device *net; 268f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_header *h; 269c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 270f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (hh->hh_type == cpu_to_be16(ETH_P_802_3)) 271c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return -1; 272f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net = neigh->dev; 273f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter h = (struct fwnet_header *)((u8 *)hh->hh_data + 16 - sizeof(*h)); 274f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter h->h_proto = hh->hh_type; 275f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter memcpy(h->h_dest, neigh->ha, net->addr_len); 276f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter hh->hh_len = FWNET_HLEN; 277c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 278c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 279c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 280c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 281c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason/* Called by Address Resolution module to notify changes in address. */ 282f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_header_cache_update(struct hh_cache *hh, 283f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter const struct net_device *net, const unsigned char *haddr) 284f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 285f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter memcpy((u8 *)hh->hh_data + 16 - FWNET_HLEN, haddr, net->addr_len); 286c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 287c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 288f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_header_parse(const struct sk_buff *skb, unsigned char *haddr) 289f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 290f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter memcpy(haddr, skb->dev->dev_addr, FWNET_ALEN); 291f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 292f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return FWNET_ALEN; 293c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 294c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 295f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic const struct header_ops fwnet_header_ops = { 296f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .create = fwnet_header_create, 297f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .rebuild = fwnet_header_rebuild, 298f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .cache = fwnet_header_cache, 299f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .cache_update = fwnet_header_cache_update, 300f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .parse = fwnet_header_parse, 301c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 302c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 303c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason/* FIXME: is this correct for all cases? */ 304f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic bool fwnet_frag_overlap(struct fwnet_partial_datagram *pd, 305f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter unsigned offset, unsigned len) 306c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason{ 307f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_fragment_info *fi; 308c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned end = offset + len; 309c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 310f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_for_each_entry(fi, &pd->fi_list, fi_link) 311f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (offset < fi->offset + fi->len && end > fi->offset) 312c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return true; 313f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 314c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return false; 315c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 316c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 317c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason/* Assumes that new fragment does not overlap any existing fragments */ 318f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct fwnet_fragment_info *fwnet_frag_new( 319f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_partial_datagram *pd, unsigned offset, unsigned len) 320f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 321f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_fragment_info *fi, *fi2, *new; 322c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct list_head *list; 323c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 324f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list = &pd->fi_list; 325f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_for_each_entry(fi, &pd->fi_list, fi_link) { 326c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (fi->offset + fi->len == offset) { 327c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* The new fragment can be tacked on to the end */ 328c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Did the new fragment plug a hole? */ 329f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fi2 = list_entry(fi->fi_link.next, 330f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_fragment_info, fi_link); 331c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (fi->offset + fi->len == fi2->offset) { 332c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* glue fragments together */ 333c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason fi->len += len + fi2->len; 334f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_del(&fi2->fi_link); 335c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason kfree(fi2); 336c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 337c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason fi->len += len; 338c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 339f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 340c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return fi; 341c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 342c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (offset + len == fi->offset) { 343c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* The new fragment can be tacked on to the beginning */ 344c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Did the new fragment plug a hole? */ 345f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fi2 = list_entry(fi->fi_link.prev, 346f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_fragment_info, fi_link); 347c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (fi2->offset + fi2->len == fi->offset) { 348c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* glue fragments together */ 349c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason fi2->len += fi->len + len; 350f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_del(&fi->fi_link); 351c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason kfree(fi); 352f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 353c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return fi2; 354c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 355c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason fi->offset = offset; 356c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason fi->len += len; 357f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 358c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return fi; 359c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 360c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (offset > fi->offset + fi->len) { 361f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list = &fi->fi_link; 362c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason break; 363c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 364c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (offset + len < fi->offset) { 365f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list = fi->fi_link.prev; 366c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason break; 367c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 368c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 369c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 370c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason new = kmalloc(sizeof(*new), GFP_ATOMIC); 371c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (!new) { 372f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("out of memory\n"); 373c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return NULL; 374c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 375c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 376c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason new->offset = offset; 377c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason new->len = len; 378f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_add(&new->fi_link, list); 379f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 380c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return new; 381c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 382c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 383f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct fwnet_partial_datagram *fwnet_pd_new(struct net_device *net, 384f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_peer *peer, u16 datagram_label, unsigned dg_size, 385f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter void *frag_buf, unsigned frag_off, unsigned frag_len) 386f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 387f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_partial_datagram *new; 388f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_fragment_info *fi; 389c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 390c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason new = kmalloc(sizeof(*new), GFP_ATOMIC); 391c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (!new) 392c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto fail; 393f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 394f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter INIT_LIST_HEAD(&new->fi_list); 395f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fi = fwnet_frag_new(new, frag_off, frag_len); 396f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (fi == NULL) 397c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto fail_w_new; 398f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 399c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason new->datagram_label = datagram_label; 400c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason new->datagram_size = dg_size; 401f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter new->skb = dev_alloc_skb(dg_size + net->hard_header_len + 15); 402f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (new->skb == NULL) 403c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto fail_w_fi; 404f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 405f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb_reserve(new->skb, (net->hard_header_len + 15) & ~15); 406c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason new->pbuf = skb_put(new->skb, dg_size); 407c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason memcpy(new->pbuf + frag_off, frag_buf, frag_len); 408f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_add_tail(&new->pd_link, &peer->pd_list); 409f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 410c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return new; 411c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 412c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlasonfail_w_fi: 413c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason kfree(fi); 414c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlasonfail_w_new: 415c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason kfree(new); 416c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlasonfail: 417f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("out of memory\n"); 418f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 419c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return NULL; 420c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 421c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 422f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct fwnet_partial_datagram *fwnet_pd_find(struct fwnet_peer *peer, 423f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u16 datagram_label) 424f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 425f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_partial_datagram *pd; 426c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 427f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_for_each_entry(pd, &peer->pd_list, pd_link) 428f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (pd->datagram_label == datagram_label) 429c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return pd; 430f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 431c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return NULL; 432c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 433c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 434c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 435f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_pd_delete(struct fwnet_partial_datagram *old) 436f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 437f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_fragment_info *fi, *n; 438c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 439f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_for_each_entry_safe(fi, n, &old->fi_list, fi_link) 440c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason kfree(fi); 441f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 442f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_del(&old->pd_link); 443c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason dev_kfree_skb_any(old->skb); 444c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason kfree(old); 445c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 446c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 447f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic bool fwnet_pd_update(struct fwnet_peer *peer, 448f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_partial_datagram *pd, void *frag_buf, 449f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter unsigned frag_off, unsigned frag_len) 450f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 451f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (fwnet_frag_new(pd, frag_off, frag_len) == NULL) 452c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return false; 453f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 454c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason memcpy(pd->pbuf + frag_off, frag_buf, frag_len); 455c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 456c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 457c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Move list entry to beginnig of list so that oldest partial 458c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * datagrams percolate to the end of the list 459c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 460f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_move_tail(&pd->pd_link, &peer->pd_list); 461f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 462c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return true; 463c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 464c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 465f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic bool fwnet_pd_is_complete(struct fwnet_partial_datagram *pd) 466f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 467f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_fragment_info *fi; 468c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 469f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fi = list_entry(pd->fi_list.next, struct fwnet_fragment_info, fi_link); 470c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 471f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return fi->len == pd->datagram_size; 472c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 473c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 4745a124d382ea5c97be43c779e4f481455e0287654Stefan Richter/* caller must hold dev->lock */ 475f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct fwnet_peer *fwnet_peer_find_by_guid(struct fwnet_device *dev, 476f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u64 guid) 477f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 4785a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_peer *peer; 479c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 4805a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_for_each_entry(peer, &dev->peer_list, peer_link) 4815a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (peer->guid == guid) 4825a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return peer; 483c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 4845a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return NULL; 485c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 486c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 4875a124d382ea5c97be43c779e4f481455e0287654Stefan Richter/* caller must hold dev->lock */ 488f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct fwnet_peer *fwnet_peer_find_by_node_id(struct fwnet_device *dev, 4895a124d382ea5c97be43c779e4f481455e0287654Stefan Richter int node_id, int generation) 490f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 4915a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_peer *peer; 492c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 4935a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_for_each_entry(peer, &dev->peer_list, peer_link) 4945a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (peer->node_id == node_id && 4955a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->generation == generation) 4965a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return peer; 497f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 4985a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return NULL; 499c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 500c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 5015a124d382ea5c97be43c779e4f481455e0287654Stefan Richter/* See IEEE 1394-2008 table 6-4, table 8-8, table 16-18. */ 5025a124d382ea5c97be43c779e4f481455e0287654Stefan Richterstatic unsigned fwnet_max_payload(unsigned max_rec, unsigned speed) 503f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 5045a124d382ea5c97be43c779e4f481455e0287654Stefan Richter max_rec = min(max_rec, speed + 8); 5055a124d382ea5c97be43c779e4f481455e0287654Stefan Richter max_rec = min(max_rec, 0xbU); /* <= 4096 */ 5065a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (max_rec < 8) { 5075a124d382ea5c97be43c779e4f481455e0287654Stefan Richter fw_notify("max_rec %x out of range\n", max_rec); 5085a124d382ea5c97be43c779e4f481455e0287654Stefan Richter max_rec = 8; 509c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 5105a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 5115a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return (1 << (max_rec + 1)) - RFC2374_FRAG_HDR_SIZE; 512c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 513c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 5145a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 515f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_finish_incoming_packet(struct net_device *net, 516f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct sk_buff *skb, u16 source_node_id, 517f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter bool is_broadcast, u16 ether_type) 518f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 519f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_device *dev; 520f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter static const __be64 broadcast_hw = cpu_to_be64(~0ULL); 521c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int status; 522f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be64 guid; 523c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 524f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev = netdev_priv(net); 525c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Write metadata, and then pass to the receive level */ 526f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb->dev = net; 527c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb->ip_summed = CHECKSUM_UNNECESSARY; /* don't check it */ 528c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 529c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 530c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Parse the encapsulation header. This actually does the job of 531c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * converting to an ethernet frame header, as well as arp 532c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * conversion if needed. ARP conversion is easier in this 533c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * direction, since we are using ethernet as our backend. 534c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 535c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 536c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * If this is an ARP packet, convert it. First, we want to make 537c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * use of some of the fields, since they tell us a little bit 538c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * about the sending machine. 539c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 540c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (ether_type == ETH_P_ARP) { 541f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct rfc2734_arp *arp1394; 542c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct arphdr *arp; 543c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned char *arp_ptr; 544c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u64 fifo_addr; 545f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u64 peer_guid; 5465a124d382ea5c97be43c779e4f481455e0287654Stefan Richter unsigned sspd; 547c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 max_payload; 548f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_peer *peer; 5495a124d382ea5c97be43c779e4f481455e0287654Stefan Richter unsigned long flags; 5505a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 5515a124d382ea5c97be43c779e4f481455e0287654Stefan Richter arp1394 = (struct rfc2734_arp *)skb->data; 5525a124d382ea5c97be43c779e4f481455e0287654Stefan Richter arp = (struct arphdr *)skb->data; 5535a124d382ea5c97be43c779e4f481455e0287654Stefan Richter arp_ptr = (unsigned char *)(arp + 1); 5545a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer_guid = get_unaligned_be64(&arp1394->s_uniq_id); 5555a124d382ea5c97be43c779e4f481455e0287654Stefan Richter fifo_addr = (u64)get_unaligned_be16(&arp1394->fifo_hi) << 32 5565a124d382ea5c97be43c779e4f481455e0287654Stefan Richter | get_unaligned_be32(&arp1394->fifo_lo); 557c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 558c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason sspd = arp1394->sspd; 559f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* Sanity check. OS X 10.3 PPC reportedly sends 131. */ 560f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (sspd > SCODE_3200) { 561f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_notify("sspd %x out of range\n", sspd); 5625a124d382ea5c97be43c779e4f481455e0287654Stefan Richter sspd = SCODE_3200; 563c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 5645a124d382ea5c97be43c779e4f481455e0287654Stefan Richter max_payload = fwnet_max_payload(arp1394->max_rec, sspd); 565c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 5665a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_lock_irqsave(&dev->lock, flags); 567f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter peer = fwnet_peer_find_by_guid(dev, peer_guid); 5685a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (peer) { 5695a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->fifo = fifo_addr; 5705a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 5715a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (peer->speed > sspd) 5725a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->speed = sspd; 5735a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (peer->max_payload > max_payload) 5745a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->max_payload = max_payload; 5755a124d382ea5c97be43c779e4f481455e0287654Stefan Richter } 5765a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 5775a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 578f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (!peer) { 579f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_notify("No peer for ARP packet from %016llx\n", 580f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter (unsigned long long)peer_guid); 581c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto failed_proto; 582c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 583f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 584c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 585c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Now that we're done with the 1394 specific stuff, we'll 586c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * need to alter some of the data. Believe it or not, all 587c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * that needs to be done is sender_IP_address needs to be 588c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * moved, the destination hardware address get stuffed 589c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * in and the hardware address length set to 8. 590c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * 591c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * IMPORTANT: The code below overwrites 1394 specific data 592c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * needed above so keep the munging of the data for the 593c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * higher level IP stack last. 594c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 595c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 596c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason arp->ar_hln = 8; 597f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* skip over sender unique id */ 598f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter arp_ptr += arp->ar_hln; 599f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* move sender IP addr */ 600f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned(arp1394->sip, (u32 *)arp_ptr); 601f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* skip over sender IP addr */ 602f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter arp_ptr += arp->ar_pln; 603c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 604c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (arp->ar_op == htons(ARPOP_REQUEST)) 605c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason memset(arp_ptr, 0, sizeof(u64)); 606c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason else 607f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter memcpy(arp_ptr, net->dev_addr, sizeof(u64)); 608c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 609c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 610c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Now add the ethernet header. */ 611f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter guid = cpu_to_be64(dev->card->guid); 612f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (dev_hard_header(skb, net, ether_type, 613f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter is_broadcast ? &broadcast_hw : &guid, 614f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter NULL, skb->len) >= 0) { 615f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_header *eth; 616c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 *rawp; 617c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason __be16 protocol; 618c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 619c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb_reset_mac_header(skb); 620c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb_pull(skb, sizeof(*eth)); 621f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter eth = (struct fwnet_header *)skb_mac_header(skb); 622c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (*eth->h_dest & 1) { 623f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (memcmp(eth->h_dest, net->broadcast, 624f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->addr_len) == 0) 625c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb->pkt_type = PACKET_BROADCAST; 626c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#if 0 627c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason else 628c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb->pkt_type = PACKET_MULTICAST; 629c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason#endif 630c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 631156ce867a6725ea8a24b452469a6dc9f3fa6a161Stefan Richter if (memcmp(eth->h_dest, net->dev_addr, net->addr_len)) 632c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb->pkt_type = PACKET_OTHERHOST; 633c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 634c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (ntohs(eth->h_proto) >= 1536) { 635c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason protocol = eth->h_proto; 636c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 637c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason rawp = (u16 *)skb->data; 638f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (*rawp == 0xffff) 639c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason protocol = htons(ETH_P_802_3); 640f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter else 641c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason protocol = htons(ETH_P_802_2); 642c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 643c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb->protocol = protocol; 644c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 645c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason status = netif_rx(skb); 646f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (status == NET_RX_DROP) { 647f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.rx_errors++; 648f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.rx_dropped++; 649c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 650f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.rx_packets++; 651f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.rx_bytes += skb->len; 652c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 653f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (netif_queue_stopped(net)) 654f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter netif_wake_queue(net); 655f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 656c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 657c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 658c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason failed_proto: 659f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.rx_errors++; 660f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.rx_dropped++; 661f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 662c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason dev_kfree_skb_any(skb); 663f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (netif_queue_stopped(net)) 664f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter netif_wake_queue(net); 665f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 666c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 667c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 668c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 669f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len, 6705a124d382ea5c97be43c779e4f481455e0287654Stefan Richter int source_node_id, int generation, 6715a124d382ea5c97be43c779e4f481455e0287654Stefan Richter bool is_broadcast) 672f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 673c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct sk_buff *skb; 6745a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct net_device *net = dev->netdev; 675f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct rfc2734_header hdr; 676c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned lf; 677c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned long flags; 678f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_peer *peer; 679f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_partial_datagram *pd; 680c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int fg_off; 681c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int dg_size; 682c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 datagram_label; 683c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int retval; 684c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 ether_type; 685c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 686f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter hdr.w0 = be32_to_cpu(buf[0]); 687f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter lf = fwnet_get_hdr_lf(&hdr); 688f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (lf == RFC2374_HDR_UNFRAG) { 689c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 690c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * An unfragmented datagram has been received by the ieee1394 691c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * bus. Build an skbuff around it so we can pass it to the 692c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * high level network layer. 693c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 694f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ether_type = fwnet_get_hdr_ether_type(&hdr); 695c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason buf++; 696f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter len -= RFC2374_UNFRAG_HDR_SIZE; 697c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 698f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb = dev_alloc_skb(len + net->hard_header_len + 15); 699c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (unlikely(!skb)) { 700f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("out of memory\n"); 701f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.rx_dropped++; 702f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 703c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return -1; 704c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 705f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb_reserve(skb, (net->hard_header_len + 15) & ~15); 706f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter memcpy(skb_put(skb, len), buf, len); 707f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 708f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return fwnet_finish_incoming_packet(net, skb, source_node_id, 709f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter is_broadcast, ether_type); 710c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 711c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* A datagram fragment has been received, now the fun begins. */ 712c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason hdr.w1 = ntohl(buf[1]); 713f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter buf += 2; 714f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter len -= RFC2374_FRAG_HDR_SIZE; 715f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (lf == RFC2374_HDR_FIRSTFRAG) { 716f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ether_type = fwnet_get_hdr_ether_type(&hdr); 717c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason fg_off = 0; 718c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 719f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ether_type = 0; 720f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fg_off = fwnet_get_hdr_fg_off(&hdr); 721c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 722f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter datagram_label = fwnet_get_hdr_dgl(&hdr); 723f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dg_size = fwnet_get_hdr_dg_size(&hdr); /* ??? + 1 */ 724f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 7255a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_lock_irqsave(&dev->lock, flags); 7265a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 7275a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer = fwnet_peer_find_by_node_id(dev, source_node_id, generation); 7285a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (!peer) 7295a124d382ea5c97be43c779e4f481455e0287654Stefan Richter goto bad_proto; 730f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 731f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter pd = fwnet_pd_find(peer, datagram_label); 732c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (pd == NULL) { 733f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter while (peer->pdg_size >= FWNET_MAX_FRAGMENTS) { 734c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* remove the oldest */ 735f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_pd_delete(list_first_entry(&peer->pd_list, 736f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_partial_datagram, pd_link)); 737f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter peer->pdg_size--; 738c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 739f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter pd = fwnet_pd_new(net, peer, datagram_label, 740f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dg_size, buf, fg_off, len); 741f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (pd == NULL) { 742c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason retval = -ENOMEM; 743c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto bad_proto; 744c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 745f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter peer->pdg_size++; 746c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 747f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (fwnet_frag_overlap(pd, fg_off, len) || 748f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter pd->datagram_size != dg_size) { 749c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 750c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Differing datagram sizes or overlapping fragments, 751f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * discard old datagram and start a new one. 752c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 753f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_pd_delete(pd); 754f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter pd = fwnet_pd_new(net, peer, datagram_label, 755f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dg_size, buf, fg_off, len); 756f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (pd == NULL) { 757c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason retval = -ENOMEM; 758f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter peer->pdg_size--; 759c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto bad_proto; 760c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 761c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 762f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (!fwnet_pd_update(peer, pd, buf, fg_off, len)) { 763c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 764c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Couldn't save off fragment anyway 765c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * so might as well obliterate the 766c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * datagram now. 767c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 768f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_pd_delete(pd); 769f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter peer->pdg_size--; 770c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto bad_proto; 771c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 772c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 773c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } /* new datagram or add to existing one */ 774c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 775f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (lf == RFC2374_HDR_FIRSTFRAG) 776c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason pd->ether_type = ether_type; 777f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 778f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (fwnet_pd_is_complete(pd)) { 779c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ether_type = pd->ether_type; 780f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter peer->pdg_size--; 781c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb = skb_get(pd->skb); 782f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_pd_delete(pd); 783f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 7845a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 785f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 786f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return fwnet_finish_incoming_packet(net, skb, source_node_id, 787f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter false, ether_type); 788c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 789c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 790c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Datagram is not complete, we're done for the 791c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * moment. 792c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 7935a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 794f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 795c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 796c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 797c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason bad_proto: 7985a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 799f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 800f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (netif_queue_stopped(net)) 801f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter netif_wake_queue(net); 802f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 803c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 804c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 805c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 806f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_receive_packet(struct fw_card *card, struct fw_request *r, 807f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter int tcode, int destination, int source, int generation, 808f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter int speed, unsigned long long offset, void *payload, 809f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter size_t length, void *callback_data) 810f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 81100635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter struct fwnet_device *dev = callback_data; 81200635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter int rcode; 813c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 81400635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter if (destination == IEEE1394_ALL_NODES) { 81500635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter kfree(r); 816f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 817c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return; 818c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 819f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 82000635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter if (offset != dev->handler.offset) 82100635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter rcode = RCODE_ADDRESS_ERROR; 82200635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter else if (tcode != TCODE_WRITE_BLOCK_REQUEST) 82300635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter rcode = RCODE_TYPE_ERROR; 82400635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter else if (fwnet_incoming_packet(dev, payload, length, 82500635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter source, generation, false) != 0) { 826f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("Incoming packet failure\n"); 82700635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter rcode = RCODE_CONFLICT_ERROR; 82800635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter } else 82900635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter rcode = RCODE_COMPLETE; 830f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 83100635b8ee2b5650fd01f5602ecfa289db336b570Stefan Richter fw_send_response(card, r, rcode); 832c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 833c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 834f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_receive_broadcast(struct fw_iso_context *context, 835f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u32 cycle, size_t header_length, void *header, void *data) 836f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 837f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_device *dev; 838c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_iso_packet packet; 839c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_card *card; 840f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be16 *hdr_ptr; 841f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be32 *buf_ptr; 842c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int retval; 843c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u32 length; 844c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 source_node_id; 845c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u32 specifier_id; 846c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u32 ver; 847c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned long offset; 848c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned long flags; 849c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 850f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev = data; 851f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter card = dev->card; 852c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason hdr_ptr = header; 853f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter length = be16_to_cpup(hdr_ptr); 854f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 855f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_lock_irqsave(&dev->lock, flags); 856f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 857f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter offset = dev->rcv_buffer_size * dev->broadcast_rcv_next_ptr; 858f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter buf_ptr = dev->broadcast_rcv_buffer_ptrs[dev->broadcast_rcv_next_ptr++]; 859f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (dev->broadcast_rcv_next_ptr == dev->num_broadcast_rcv_ptrs) 860f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_rcv_next_ptr = 0; 861f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 862f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 863c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 864c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason specifier_id = (be32_to_cpu(buf_ptr[0]) & 0xffff) << 8 865c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason | (be32_to_cpu(buf_ptr[1]) & 0xff000000) >> 24; 866f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ver = be32_to_cpu(buf_ptr[1]) & 0xffffff; 867c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason source_node_id = be32_to_cpu(buf_ptr[0]) >> 16; 868f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 869f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (specifier_id == IANA_SPECIFIER_ID && ver == RFC2734_SW_VERSION) { 870c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason buf_ptr += 2; 871f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter length -= IEEE1394_GASP_HDR_SIZE; 872f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_incoming_packet(dev, buf_ptr, length, 8735a124d382ea5c97be43c779e4f481455e0287654Stefan Richter source_node_id, -1, true); 874f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter } 875f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 876f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter packet.payload_length = dev->rcv_buffer_size; 877c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.interrupt = 1; 878c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.skip = 0; 879c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.tag = 3; 880c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.sy = 0; 881f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter packet.header_length = IEEE1394_GASP_HDR_SIZE; 882f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 883f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_lock_irqsave(&dev->lock, flags); 884c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 885f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter retval = fw_iso_context_queue(dev->broadcast_rcv_context, &packet, 886f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter &dev->broadcast_rcv_buffer, offset); 887f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 888f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 889f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 890f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (retval < 0) 891f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("requeue failed\n"); 892c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 893c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 894f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct kmem_cache *fwnet_packet_task_cache; 895f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 896110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richterstatic void fwnet_free_ptask(struct fwnet_packet_task *ptask) 897110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter{ 898110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter dev_kfree_skb_any(ptask->skb); 899110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter kmem_cache_free(fwnet_packet_task_cache, ptask); 900110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter} 901110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 902f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_send_packet(struct fwnet_packet_task *ptask); 903f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 904f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask) 905f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 906110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter struct fwnet_device *dev = ptask->dev; 907c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned long flags; 908110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter bool free; 909f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 910f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_lock_irqsave(&dev->lock, flags); 911f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 912110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter ptask->outstanding_pkts--; 913110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 914110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter /* Check whether we or the networking TX soft-IRQ is last user. */ 915110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter free = (ptask->outstanding_pkts == 0 && !list_empty(&ptask->pt_link)); 916110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 917110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter if (ptask->outstanding_pkts == 0) 918110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter list_del(&ptask->pt_link); 919110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 920110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 921f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 922f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (ptask->outstanding_pkts > 0) { 923c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 dg_size; 924c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 fg_off; 925c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 datagram_label; 926c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 lf; 927c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct sk_buff *skb; 928c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 929c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Update the ptask to point to the next fragment and send it */ 930f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter lf = fwnet_get_hdr_lf(&ptask->hdr); 931c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason switch (lf) { 932f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_LASTFRAG: 933f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_UNFRAG: 934c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason default: 935f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("Outstanding packet %x lf %x, header %x,%x\n", 936f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptask->outstanding_pkts, lf, ptask->hdr.w0, 937f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptask->hdr.w1); 938c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason BUG(); 939c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 940f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_FIRSTFRAG: 941c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Set frag type here for future interior fragments */ 942f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dg_size = fwnet_get_hdr_dg_size(&ptask->hdr); 943f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fg_off = ptask->max_payload - RFC2374_FRAG_HDR_SIZE; 944f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter datagram_label = fwnet_get_hdr_dgl(&ptask->hdr); 945c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason break; 946c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 947f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_INTFRAG: 948f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dg_size = fwnet_get_hdr_dg_size(&ptask->hdr); 949f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fg_off = fwnet_get_hdr_fg_off(&ptask->hdr) 950f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter + ptask->max_payload - RFC2374_FRAG_HDR_SIZE; 951f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter datagram_label = fwnet_get_hdr_dgl(&ptask->hdr); 952c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason break; 953c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 954c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb = ptask->skb; 955f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb_pull(skb, ptask->max_payload); 956f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (ptask->outstanding_pkts > 1) { 957f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_INTFRAG, 958f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dg_size, fg_off, datagram_label); 959c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 960f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_LASTFRAG, 961f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dg_size, fg_off, datagram_label); 962f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptask->max_payload = skb->len + RFC2374_FRAG_HDR_SIZE; 963c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 964f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_send_packet(ptask); 965c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 966110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 967110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter if (free) 968110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter fwnet_free_ptask(ptask); 969c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 970c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 971f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_write_complete(struct fw_card *card, int rcode, 972f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter void *payload, size_t length, void *data) 973f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 974f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_packet_task *ptask; 975c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 976c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ptask = data; 977c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 978f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (rcode == RCODE_COMPLETE) 979f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_transmit_packet_done(ptask); 980f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter else 981f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("fwnet_write_complete: failed: %x\n", rcode); 982c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* ??? error recovery */ 983c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 984c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 985f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_send_packet(struct fwnet_packet_task *ptask) 986f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 987f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_device *dev; 988c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned tx_len; 989f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct rfc2734_header *bufhdr; 990c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned long flags; 991110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter bool free; 992c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 993f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev = ptask->dev; 994c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason tx_len = ptask->max_payload; 995f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter switch (fwnet_get_hdr_lf(&ptask->hdr)) { 996f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_UNFRAG: 997f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter bufhdr = (struct rfc2734_header *) 998f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb_push(ptask->skb, RFC2374_UNFRAG_HDR_SIZE); 999f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be32(ptask->hdr.w0, &bufhdr->w0); 1000c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason break; 1001c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1002f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_FIRSTFRAG: 1003f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_INTFRAG: 1004f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter case RFC2374_HDR_LASTFRAG: 1005f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter bufhdr = (struct rfc2734_header *) 1006f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter skb_push(ptask->skb, RFC2374_FRAG_HDR_SIZE); 1007f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be32(ptask->hdr.w0, &bufhdr->w0); 1008f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be32(ptask->hdr.w1, &bufhdr->w1); 1009c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason break; 1010c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1011c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason default: 1012c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason BUG(); 1013c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1014f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (ptask->dest_node == IEEE1394_ALL_NODES) { 1015f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter u8 *p; 1016c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int generation; 1017f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter int node_id; 1018c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1019c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* ptask->generation may not have been set yet */ 1020f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter generation = dev->card->generation; 1021c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason smp_rmb(); 1022f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter node_id = dev->card->node_id; 1023f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1024f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter p = skb_push(ptask->skb, 8); 1025f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be32(node_id << 16 | IANA_SPECIFIER_ID >> 8, p); 1026f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be32((IANA_SPECIFIER_ID & 0xff) << 24 1027f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter | RFC2734_SW_VERSION, &p[4]); 1028f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1029f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* We should not transmit if broadcast_channel.valid == 0. */ 1030f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_send_request(dev->card, &ptask->transaction, 1031f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter TCODE_STREAM_DATA, 1032f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_stream_packet_destination_id(3, 1033f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter IEEE1394_BROADCAST_CHANNEL, 0), 1034f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter generation, SCODE_100, 0ULL, ptask->skb->data, 1035f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter tx_len + 8, fwnet_write_complete, ptask); 1036f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1037f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_lock_irqsave(&dev->lock, flags); 1038110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 1039110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter /* If the AT tasklet already ran, we may be last user. */ 1040110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link)); 1041110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter if (!free) 1042110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter list_add_tail(&ptask->pt_link, &dev->broadcasted_list); 1043110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 1044f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 1045f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1046110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter goto out; 1047c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1048f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1049f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_send_request(dev->card, &ptask->transaction, 1050f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter TCODE_WRITE_BLOCK_REQUEST, ptask->dest_node, 1051f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptask->generation, ptask->speed, ptask->fifo_addr, 1052f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptask->skb->data, tx_len, fwnet_write_complete, ptask); 1053f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1054f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_lock_irqsave(&dev->lock, flags); 1055110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 1056110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter /* If the AT tasklet already ran, we may be last user. */ 1057110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link)); 1058110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter if (!free) 1059110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter list_add_tail(&ptask->pt_link, &dev->sent_list); 1060110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 1061f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 1062f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 10635a124d382ea5c97be43c779e4f481455e0287654Stefan Richter dev->netdev->trans_start = jiffies; 1064110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter out: 1065110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter if (free) 1066110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter fwnet_free_ptask(ptask); 1067f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1068c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 1069c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1070c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1071f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_broadcast_start(struct fwnet_device *dev) 1072f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1073c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_iso_context *context; 1074c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int retval; 1075c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned num_packets; 1076c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned max_receive; 1077c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct fw_iso_packet packet; 1078c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned long offset; 1079c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned u; 1080c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1081f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (dev->local_fifo == FWNET_NO_FIFO_ADDR) { 1082f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* outside OHCI posted write area? */ 1083f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter static const struct fw_address_region region = { 1084f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .start = 0xffff00000000ULL, 1085f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .end = CSR_REGISTER_BASE, 1086f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter }; 1087f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1088f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->handler.length = 4096; 1089f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->handler.address_callback = fwnet_receive_packet; 1090f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->handler.callback_data = dev; 1091f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1092f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter retval = fw_core_add_address_handler(&dev->handler, ®ion); 1093f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (retval < 0) 1094c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto failed_initial; 1095f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1096f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->local_fifo = dev->handler.offset; 1097c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1098c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1099f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter max_receive = 1U << (dev->card->max_receive + 1); 1100f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter num_packets = (FWNET_ISO_PAGE_COUNT * PAGE_SIZE) / max_receive; 1101f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1102f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (!dev->broadcast_rcv_context) { 1103c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason void **ptrptr; 1104c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1105f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter context = fw_iso_context_create(dev->card, 1106f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter FW_ISO_CONTEXT_RECEIVE, IEEE1394_BROADCAST_CHANNEL, 1107f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->card->link_speed, 8, fwnet_receive_broadcast, dev); 1108c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (IS_ERR(context)) { 1109c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason retval = PTR_ERR(context); 1110c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto failed_context_create; 1111c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1112f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1113f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter retval = fw_iso_buffer_init(&dev->broadcast_rcv_buffer, 1114f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->card, FWNET_ISO_PAGE_COUNT, DMA_FROM_DEVICE); 1115f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (retval < 0) 1116c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto failed_buffer_init; 1117f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1118f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptrptr = kmalloc(sizeof(void *) * num_packets, GFP_KERNEL); 1119f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (!ptrptr) { 1120c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason retval = -ENOMEM; 1121c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto failed_ptrs_alloc; 1122c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1123f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1124f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_rcv_buffer_ptrs = ptrptr; 1125f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter for (u = 0; u < FWNET_ISO_PAGE_COUNT; u++) { 1126c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason void *ptr; 1127c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned v; 1128c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1129f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptr = kmap(dev->broadcast_rcv_buffer.pages[u]); 1130f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter for (v = 0; v < num_packets / FWNET_ISO_PAGE_COUNT; v++) 1131f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter *ptrptr++ = (void *) 1132f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ((char *)ptr + v * max_receive); 1133c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1134f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_rcv_context = context; 1135f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter } else { 1136f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter context = dev->broadcast_rcv_context; 1137f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter } 1138c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1139c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.payload_length = max_receive; 1140c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.interrupt = 1; 1141c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.skip = 0; 1142c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.tag = 3; 1143c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason packet.sy = 0; 1144f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter packet.header_length = IEEE1394_GASP_HDR_SIZE; 1145c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason offset = 0; 1146f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1147f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter for (u = 0; u < num_packets; u++) { 1148f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter retval = fw_iso_context_queue(context, &packet, 1149f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter &dev->broadcast_rcv_buffer, offset); 1150f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (retval < 0) 1151c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto failed_rcv_queue; 1152f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1153c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason offset += max_receive; 1154c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1155f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->num_broadcast_rcv_ptrs = num_packets; 1156f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->rcv_buffer_size = max_receive; 1157f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_rcv_next_ptr = 0U; 1158f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter retval = fw_iso_context_start(context, -1, 0, 1159f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter FW_ISO_CONTEXT_MATCH_ALL_TAGS); /* ??? sync */ 1160f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (retval < 0) 1161c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto failed_rcv_queue; 1162f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1163f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* FIXME: adjust it according to the min. speed of all known peers? */ 1164f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_xmt_max_payload = IEEE1394_MAX_PAYLOAD_S100 1165f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter - IEEE1394_GASP_HDR_SIZE - RFC2374_UNFRAG_HDR_SIZE; 1166f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_state = FWNET_BROADCAST_RUNNING; 1167f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1168c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 1169c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1170c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason failed_rcv_queue: 1171f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter kfree(dev->broadcast_rcv_buffer_ptrs); 1172f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_rcv_buffer_ptrs = NULL; 1173c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason failed_ptrs_alloc: 1174f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_iso_buffer_destroy(&dev->broadcast_rcv_buffer, dev->card); 1175c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason failed_buffer_init: 1176f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_iso_context_destroy(context); 1177f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_rcv_context = NULL; 1178c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason failed_context_create: 1179f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_core_remove_address_handler(&dev->handler); 1180c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason failed_initial: 1181f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->local_fifo = FWNET_NO_FIFO_ADDR; 1182f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1183c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return retval; 1184c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1185c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1186f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter/* ifup */ 1187f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_open(struct net_device *net) 1188f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1189f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_device *dev = netdev_priv(net); 1190c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason int ret; 1191c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1192f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (dev->broadcast_state == FWNET_BROADCAST_ERROR) { 1193f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ret = fwnet_broadcast_start(dev); 1194c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (ret) 1195c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return ret; 1196c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1197f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter netif_start_queue(net); 1198f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1199c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 1200c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1201c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1202f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter/* ifdown */ 1203f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_stop(struct net_device *net) 1204c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason{ 1205f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter netif_stop_queue(net); 1206f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1207f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter /* Deallocate iso context for use by other applications? */ 1208c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1209c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 1210c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1211c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1212424efe9caf6047ffbcd6b383ff4d2347254aabf1Stephen Hemmingerstatic netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net) 1213c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason{ 1214f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_header hdr_buf; 1215f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_device *dev = netdev_priv(net); 1216c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason __be16 proto; 1217c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 dest_node; 1218c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned max_payload; 1219c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 dg_size; 1220c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 *datagram_label_ptr; 1221f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_packet_task *ptask; 12225a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_peer *peer; 12235a124d382ea5c97be43c779e4f481455e0287654Stefan Richter unsigned long flags; 1224c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1225f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptask = kmem_cache_alloc(fwnet_packet_task_cache, GFP_ATOMIC); 1226c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (ptask == NULL) 1227c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto fail; 1228c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1229c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb = skb_share_check(skb, GFP_ATOMIC); 1230c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (!skb) 1231c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto fail; 1232c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1233c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 1234f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * Make a copy of the driver-specific header. 1235c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * We might need to rebuild the header on tx failure. 1236c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 1237c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason memcpy(&hdr_buf, skb->data, sizeof(hdr_buf)); 1238c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason skb_pull(skb, sizeof(hdr_buf)); 1239c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1240c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason proto = hdr_buf.h_proto; 1241c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason dg_size = skb->len; 1242c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 12435a124d382ea5c97be43c779e4f481455e0287654Stefan Richter /* serialize access to peer, including peer->datagram_label */ 12445a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_lock_irqsave(&dev->lock, flags); 12455a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1246c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 1247c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Set the transmission type for the packet. ARP packets and IP 1248c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * broadcast packets are sent via GASP. 1249c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 1250f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (memcmp(hdr_buf.h_dest, net->broadcast, FWNET_ALEN) == 0 1251c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason || proto == htons(ETH_P_ARP) 1252f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter || (proto == htons(ETH_P_IP) 1253f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter && IN_MULTICAST(ntohl(ip_hdr(skb)->daddr)))) { 12545a124d382ea5c97be43c779e4f481455e0287654Stefan Richter max_payload = dev->broadcast_xmt_max_payload; 1255f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter datagram_label_ptr = &dev->broadcast_xmt_datagramlabel; 1256f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 12575a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->fifo_addr = FWNET_NO_FIFO_ADDR; 12585a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->generation = 0; 12595a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->dest_node = IEEE1394_ALL_NODES; 12605a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->speed = SCODE_100; 1261c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 1262f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be64 guid = get_unaligned((__be64 *)hdr_buf.h_dest); 1263c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u8 generation; 1264c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1265f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter peer = fwnet_peer_find_by_guid(dev, be64_to_cpu(guid)); 12665a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (!peer || peer->fifo == FWNET_NO_FIFO_ADDR) 12675a124d382ea5c97be43c779e4f481455e0287654Stefan Richter goto fail_unlock; 1268c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 12695a124d382ea5c97be43c779e4f481455e0287654Stefan Richter generation = peer->generation; 12705a124d382ea5c97be43c779e4f481455e0287654Stefan Richter dest_node = peer->node_id; 12715a124d382ea5c97be43c779e4f481455e0287654Stefan Richter max_payload = peer->max_payload; 1272f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter datagram_label_ptr = &peer->datagram_label; 1273c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 12745a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->fifo_addr = peer->fifo; 12755a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->generation = generation; 12765a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->dest_node = dest_node; 12775a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ptask->speed = peer->speed; 1278c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1279c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1280c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* If this is an ARP packet, convert it */ 1281c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (proto == htons(ETH_P_ARP)) { 1282c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason struct arphdr *arp = (struct arphdr *)skb->data; 1283c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned char *arp_ptr = (unsigned char *)(arp + 1); 1284f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct rfc2734_arp *arp1394 = (struct rfc2734_arp *)skb->data; 1285f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter __be32 ipaddr; 1286f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1287f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ipaddr = get_unaligned((__be32 *)(arp_ptr + FWNET_ALEN)); 1288f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1289f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter arp1394->hw_addr_len = RFC2734_HW_ADDR_LEN; 1290f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter arp1394->max_rec = dev->card->max_receive; 1291f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter arp1394->sspd = dev->card->link_speed; 1292f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1293f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be16(dev->local_fifo >> 32, 1294f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter &arp1394->fifo_hi); 1295f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be32(dev->local_fifo & 0xffffffff, 1296f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter &arp1394->fifo_lo); 1297f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned(ipaddr, &arp1394->sip); 1298c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1299c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1300c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ptask->hdr.w0 = 0; 1301c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ptask->hdr.w1 = 0; 1302c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ptask->skb = skb; 1303f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter ptask->dev = dev; 1304f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1305c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Does it all fit in one packet? */ 1306f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (dg_size <= max_payload) { 1307f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_make_uf_hdr(&ptask->hdr, ntohs(proto)); 1308c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ptask->outstanding_pkts = 1; 1309f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter max_payload = dg_size + RFC2374_UNFRAG_HDR_SIZE; 1310c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } else { 1311c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason u16 datagram_label; 1312c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1313f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter max_payload -= RFC2374_FRAG_OVERHEAD; 1314c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason datagram_label = (*datagram_label_ptr)++; 1315f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_make_ff_hdr(&ptask->hdr, ntohs(proto), dg_size, 1316f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter datagram_label); 1317c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ptask->outstanding_pkts = DIV_ROUND_UP(dg_size, max_payload); 1318f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter max_payload += RFC2374_FRAG_HDR_SIZE; 1319c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 13205a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 13215a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 13225a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1323c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason ptask->max_payload = max_payload; 1324110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter INIT_LIST_HEAD(&ptask->pt_link); 1325110f82d7a2e0ff5a17617a9672f1ccb7e44bc0c6Stefan Richter 1326f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_send_packet(ptask); 1327f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1328c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return NETDEV_TX_OK; 1329c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 13305a124d382ea5c97be43c779e4f481455e0287654Stefan Richter fail_unlock: 13315a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irqrestore(&dev->lock, flags); 1332c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason fail: 1333c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (ptask) 1334f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter kmem_cache_free(fwnet_packet_task_cache, ptask); 1335c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1336c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (skb != NULL) 1337c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason dev_kfree_skb(skb); 1338c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1339f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.tx_dropped++; 1340f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->stats.tx_errors++; 1341c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1342c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 1343c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * FIXME: According to a patch from 2003-02-26, "returning non-zero 1344c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * causes serious problems" here, allegedly. Before that patch, 1345c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * -ERRNO was returned which is not appropriate under Linux 2.6. 1346c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Perhaps more needs to be done? Stop the queue in serious 1347c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * conditions and restart it elsewhere? 1348c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 1349c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return NETDEV_TX_OK; 1350c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1351c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1352f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_change_mtu(struct net_device *net, int new_mtu) 1353f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1354c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason if (new_mtu < 68) 1355c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return -EINVAL; 1356c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1357f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->mtu = new_mtu; 1358c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 1359c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1360c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1361f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_get_drvinfo(struct net_device *net, 1362f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct ethtool_drvinfo *info) 1363f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1364f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter strcpy(info->driver, KBUILD_MODNAME); 1365f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter strcpy(info->bus_info, "ieee1394"); 1366c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1367c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 13680fc0b732eaa38beb93a6fb62f77c7bd9622c76ecStephen Hemmingerstatic const struct ethtool_ops fwnet_ethtool_ops = { 1369f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .get_drvinfo = fwnet_get_drvinfo, 1370c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 1371c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1372f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic const struct net_device_ops fwnet_netdev_ops = { 1373f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .ndo_open = fwnet_open, 1374f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .ndo_stop = fwnet_stop, 1375f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .ndo_start_xmit = fwnet_tx, 1376f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .ndo_change_mtu = fwnet_change_mtu, 1377c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 1378c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1379f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_init_dev(struct net_device *net) 1380f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1381f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->header_ops = &fwnet_header_ops; 1382f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->netdev_ops = &fwnet_netdev_ops; 13831337f8535ac1f41915d9e8aa03d5a3edf2f7c0a5Stefan Richter net->watchdog_timeo = 2 * HZ; 1384f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->flags = IFF_BROADCAST | IFF_MULTICAST; 1385f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->features = NETIF_F_HIGHDMA; 1386f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->addr_len = FWNET_ALEN; 1387f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->hard_header_len = FWNET_HLEN; 1388f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->type = ARPHRD_IEEE1394; 13891337f8535ac1f41915d9e8aa03d5a3edf2f7c0a5Stefan Richter net->tx_queue_len = 10; 1390f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter SET_ETHTOOL_OPS(net, &fwnet_ethtool_ops); 1391c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1392c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 13935a124d382ea5c97be43c779e4f481455e0287654Stefan Richter/* caller must hold fwnet_device_mutex */ 13945a124d382ea5c97be43c779e4f481455e0287654Stefan Richterstatic struct fwnet_device *fwnet_dev_find(struct fw_card *card) 13955a124d382ea5c97be43c779e4f481455e0287654Stefan Richter{ 13965a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_device *dev; 13975a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 13985a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_for_each_entry(dev, &fwnet_device_list, dev_link) 13995a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (dev->card == card) 14005a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return dev; 14015a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 14025a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return NULL; 14035a124d382ea5c97be43c779e4f481455e0287654Stefan Richter} 14045a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 14055a124d382ea5c97be43c779e4f481455e0287654Stefan Richterstatic int fwnet_add_peer(struct fwnet_device *dev, 14065a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fw_unit *unit, struct fw_device *device) 14075a124d382ea5c97be43c779e4f481455e0287654Stefan Richter{ 14085a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_peer *peer; 14095a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 14105a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer = kmalloc(sizeof(*peer), GFP_KERNEL); 14115a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (!peer) 14125a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return -ENOMEM; 14135a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1414b01b4babbf204443b5a846a7494546501614cefcStefan Richter dev_set_drvdata(&unit->device, peer); 1415b01b4babbf204443b5a846a7494546501614cefcStefan Richter 14165a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->dev = dev; 14175a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4]; 14185a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->fifo = FWNET_NO_FIFO_ADDR; 14195a124d382ea5c97be43c779e4f481455e0287654Stefan Richter INIT_LIST_HEAD(&peer->pd_list); 14205a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->pdg_size = 0; 14215a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->datagram_label = 0; 14225a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->speed = device->max_speed; 14235a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->max_payload = fwnet_max_payload(device->max_rec, peer->speed); 14245a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 14255a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->generation = device->generation; 14265a124d382ea5c97be43c779e4f481455e0287654Stefan Richter smp_rmb(); 14275a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->node_id = device->node_id; 14285a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 14295a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_lock_irq(&dev->lock); 14305a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_add_tail(&peer->peer_link, &dev->peer_list); 14315a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irq(&dev->lock); 14325a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 14335a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return 0; 14345a124d382ea5c97be43c779e4f481455e0287654Stefan Richter} 14355a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1436f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_probe(struct device *_dev) 1437f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1438f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fw_unit *unit = fw_unit(_dev); 1439f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fw_device *device = fw_parent_device(unit); 1440f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fw_card *card = device->card; 1441f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct net_device *net; 1442b01b4babbf204443b5a846a7494546501614cefcStefan Richter bool allocated_netdev = false; 1443f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_device *dev; 1444c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason unsigned max_mtu; 14455a124d382ea5c97be43c779e4f481455e0287654Stefan Richter int ret; 1446c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 14475a124d382ea5c97be43c779e4f481455e0287654Stefan Richter mutex_lock(&fwnet_device_mutex); 1448c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 14495a124d382ea5c97be43c779e4f481455e0287654Stefan Richter dev = fwnet_dev_find(card); 14505a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (dev) { 14515a124d382ea5c97be43c779e4f481455e0287654Stefan Richter net = dev->netdev; 14525a124d382ea5c97be43c779e4f481455e0287654Stefan Richter goto have_dev; 1453c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 14545a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1455f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net = alloc_netdev(sizeof(*dev), "firewire%d", fwnet_init_dev); 1456f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (net == NULL) { 14575a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ret = -ENOMEM; 1458c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto out; 1459c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1460c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1461b01b4babbf204443b5a846a7494546501614cefcStefan Richter allocated_netdev = true; 1462f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter SET_NETDEV_DEV(net, card->device); 1463f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev = netdev_priv(net); 1464c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1465f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter spin_lock_init(&dev->lock); 1466f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_state = FWNET_BROADCAST_ERROR; 1467f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_rcv_context = NULL; 1468f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_xmt_max_payload = 0; 1469f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->broadcast_xmt_datagramlabel = 0; 1470c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1471f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->local_fifo = FWNET_NO_FIFO_ADDR; 1472c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1473f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter INIT_LIST_HEAD(&dev->packet_list); 1474f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter INIT_LIST_HEAD(&dev->broadcasted_list); 1475f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter INIT_LIST_HEAD(&dev->sent_list); 14765a124d382ea5c97be43c779e4f481455e0287654Stefan Richter INIT_LIST_HEAD(&dev->peer_list); 1477c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1478f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->card = card; 14795a124d382ea5c97be43c779e4f481455e0287654Stefan Richter dev->netdev = net; 1480c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1481c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* 1482c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * Use the RFC 2734 default 1500 octets or the maximum payload 1483c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason * as initial MTU 1484c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason */ 1485c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason max_mtu = (1 << (card->max_receive + 1)) 1486f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter - sizeof(struct rfc2734_header) - IEEE1394_GASP_HDR_SIZE; 1487f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->mtu = min(1500U, max_mtu); 1488c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1489c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason /* Set our hardware address while we're at it */ 1490f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be64(card->guid, net->dev_addr); 1491f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter put_unaligned_be64(~0ULL, net->broadcast); 14925a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ret = register_netdev(net); 14935a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (ret) { 1494f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_error("Cannot register the driver\n"); 1495c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason goto out; 1496c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1497c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 14985a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_add_tail(&dev->dev_link, &fwnet_device_list); 1499f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_notify("%s: IPv4 over FireWire on device %016llx\n", 1500f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter net->name, (unsigned long long)card->guid); 15015a124d382ea5c97be43c779e4f481455e0287654Stefan Richter have_dev: 15025a124d382ea5c97be43c779e4f481455e0287654Stefan Richter ret = fwnet_add_peer(dev, unit, device); 1503b01b4babbf204443b5a846a7494546501614cefcStefan Richter if (ret && allocated_netdev) { 15045a124d382ea5c97be43c779e4f481455e0287654Stefan Richter unregister_netdev(net); 15055a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_del(&dev->dev_link); 15065a124d382ea5c97be43c779e4f481455e0287654Stefan Richter } 1507c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason out: 1508b01b4babbf204443b5a846a7494546501614cefcStefan Richter if (ret && allocated_netdev) 1509f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter free_netdev(net); 1510f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 15115a124d382ea5c97be43c779e4f481455e0287654Stefan Richter mutex_unlock(&fwnet_device_mutex); 15125a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 15135a124d382ea5c97be43c779e4f481455e0287654Stefan Richter return ret; 15145a124d382ea5c97be43c779e4f481455e0287654Stefan Richter} 15155a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 15165a124d382ea5c97be43c779e4f481455e0287654Stefan Richterstatic void fwnet_remove_peer(struct fwnet_peer *peer) 15175a124d382ea5c97be43c779e4f481455e0287654Stefan Richter{ 15185a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_partial_datagram *pd, *pd_next; 15195a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 15205a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_lock_irq(&peer->dev->lock); 15215a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_del(&peer->peer_link); 15225a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irq(&peer->dev->lock); 15235a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 15245a124d382ea5c97be43c779e4f481455e0287654Stefan Richter list_for_each_entry_safe(pd, pd_next, &peer->pd_list, pd_link) 15255a124d382ea5c97be43c779e4f481455e0287654Stefan Richter fwnet_pd_delete(pd); 15265a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 15275a124d382ea5c97be43c779e4f481455e0287654Stefan Richter kfree(peer); 1528c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1529c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1530f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int fwnet_remove(struct device *_dev) 1531f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1532b01b4babbf204443b5a846a7494546501614cefcStefan Richter struct fwnet_peer *peer = dev_get_drvdata(_dev); 15335a124d382ea5c97be43c779e4f481455e0287654Stefan Richter struct fwnet_device *dev = peer->dev; 1534f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct net_device *net; 1535f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fwnet_packet_task *ptask, *pt_next; 1536f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 15375a124d382ea5c97be43c779e4f481455e0287654Stefan Richter mutex_lock(&fwnet_device_mutex); 1538c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 15395a124d382ea5c97be43c779e4f481455e0287654Stefan Richter fwnet_remove_peer(peer); 1540f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 15415a124d382ea5c97be43c779e4f481455e0287654Stefan Richter if (list_empty(&dev->peer_list)) { 15425a124d382ea5c97be43c779e4f481455e0287654Stefan Richter net = dev->netdev; 1543f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter unregister_netdev(net); 1544f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1545f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (dev->local_fifo != FWNET_NO_FIFO_ADDR) 1546f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_core_remove_address_handler(&dev->handler); 1547f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (dev->broadcast_rcv_context) { 1548f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_iso_context_stop(dev->broadcast_rcv_context); 1549f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_iso_buffer_destroy(&dev->broadcast_rcv_buffer, 1550f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev->card); 1551f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_iso_context_destroy(dev->broadcast_rcv_context); 1552c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1553f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_for_each_entry_safe(ptask, pt_next, 1554f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter &dev->packet_list, pt_link) { 1555f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev_kfree_skb_any(ptask->skb); 1556f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter kmem_cache_free(fwnet_packet_task_cache, ptask); 1557c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1558f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_for_each_entry_safe(ptask, pt_next, 1559f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter &dev->broadcasted_list, pt_link) { 1560f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev_kfree_skb_any(ptask->skb); 1561f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter kmem_cache_free(fwnet_packet_task_cache, ptask); 1562c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1563f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter list_for_each_entry_safe(ptask, pt_next, 1564f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter &dev->sent_list, pt_link) { 1565f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter dev_kfree_skb_any(ptask->skb); 1566f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter kmem_cache_free(fwnet_packet_task_cache, ptask); 1567c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1568b01b4babbf204443b5a846a7494546501614cefcStefan Richter list_del(&dev->dev_link); 1569b01b4babbf204443b5a846a7494546501614cefcStefan Richter 1570f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter free_netdev(net); 1571c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason } 1572f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 15735a124d382ea5c97be43c779e4f481455e0287654Stefan Richter mutex_unlock(&fwnet_device_mutex); 15745a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 1575c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason return 0; 1576c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1577c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1578f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter/* 1579f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * FIXME abort partially sent fragmented datagrams, 1580f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter * discard partially received fragmented datagrams 1581f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter */ 1582f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void fwnet_update(struct fw_unit *unit) 1583f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1584f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter struct fw_device *device = fw_parent_device(unit); 1585b01b4babbf204443b5a846a7494546501614cefcStefan Richter struct fwnet_peer *peer = dev_get_drvdata(&unit->device); 15865a124d382ea5c97be43c779e4f481455e0287654Stefan Richter int generation; 1587c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 15885a124d382ea5c97be43c779e4f481455e0287654Stefan Richter generation = device->generation; 15895a124d382ea5c97be43c779e4f481455e0287654Stefan Richter 15905a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_lock_irq(&peer->dev->lock); 15915a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->node_id = device->node_id; 15925a124d382ea5c97be43c779e4f481455e0287654Stefan Richter peer->generation = generation; 15935a124d382ea5c97be43c779e4f481455e0287654Stefan Richter spin_unlock_irq(&peer->dev->lock); 1594c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1595c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1596f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic const struct ieee1394_device_id fwnet_id_table[] = { 1597f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter { 1598f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .match_flags = IEEE1394_MATCH_SPECIFIER_ID | 1599f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter IEEE1394_MATCH_VERSION, 1600f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .specifier_id = IANA_SPECIFIER_ID, 1601f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .version = RFC2734_SW_VERSION, 1602f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter }, 1603f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter { } 1604f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter}; 1605f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1606f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct fw_driver fwnet_driver = { 1607c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason .driver = { 1608f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .owner = THIS_MODULE, 1609f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .name = "net", 1610f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .bus = &fw_bus_type, 1611f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .probe = fwnet_probe, 1612f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .remove = fwnet_remove, 1613c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason }, 1614f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .update = fwnet_update, 1615f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .id_table = fwnet_id_table, 1616f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter}; 1617f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1618f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic const u32 rfc2374_unit_directory_data[] = { 1619f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x00040000, /* directory_length */ 1620f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x1200005e, /* unit_specifier_id: IANA */ 1621f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x81000003, /* textual descriptor offset */ 1622f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x13000001, /* unit_sw_version: RFC 2734 */ 1623f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x81000005, /* textual descriptor offset */ 1624f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x00030000, /* descriptor_length */ 1625f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x00000000, /* text */ 1626f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x00000000, /* minimal ASCII, en */ 1627f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x49414e41, /* I A N A */ 1628f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x00030000, /* descriptor_length */ 1629f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x00000000, /* text */ 1630f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x00000000, /* minimal ASCII, en */ 1631f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 0x49507634, /* I P v 4 */ 1632f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter}; 1633f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1634f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic struct fw_descriptor rfc2374_unit_directory = { 1635f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .length = ARRAY_SIZE(rfc2374_unit_directory_data), 1636f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .key = (CSR_DIRECTORY | CSR_UNIT) << 24, 1637f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter .data = rfc2374_unit_directory_data 1638c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason}; 1639c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1640f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic int __init fwnet_init(void) 1641f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1642f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter int err; 1643f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1644f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter err = fw_core_add_descriptor(&rfc2374_unit_directory); 1645f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (err) 1646f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return err; 1647c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1648f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fwnet_packet_task_cache = kmem_cache_create("packet_task", 1649f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter sizeof(struct fwnet_packet_task), 0, 0, NULL); 1650f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (!fwnet_packet_task_cache) { 1651f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter err = -ENOMEM; 1652f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter goto out; 1653f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter } 1654f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1655f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter err = driver_register(&fwnet_driver.driver); 1656f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter if (!err) 1657f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return 0; 1658f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1659f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter kmem_cache_destroy(fwnet_packet_task_cache); 1660f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterout: 1661f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_core_remove_descriptor(&rfc2374_unit_directory); 1662f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter 1663f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter return err; 1664c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1665f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richtermodule_init(fwnet_init); 1666c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1667f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richterstatic void __exit fwnet_cleanup(void) 1668f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter{ 1669f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter driver_unregister(&fwnet_driver.driver); 1670f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter kmem_cache_destroy(fwnet_packet_task_cache); 1671f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richter fw_core_remove_descriptor(&rfc2374_unit_directory); 1672c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason} 1673f91e3bd842ec6f5cea245993926ee8ff26250467Stefan Richtermodule_exit(fwnet_cleanup); 1674c76acec6d55107b652a37c90b36c00bc8b04dabbJay Fenlason 1675f91e3bd842ec6f5cea245993926ee8ff26250467Stefan RichterMODULE_AUTHOR("Jay Fenlason <fenlason@redhat.com>"); 1676f91e3bd842ec6f5cea245993926ee8ff26250467Stefan RichterMODULE_DESCRIPTION("IPv4 over IEEE1394 as per RFC 2734"); 1677f91e3bd842ec6f5cea245993926ee8ff26250467Stefan RichterMODULE_LICENSE("GPL"); 1678f91e3bd842ec6f5cea245993926ee8ff26250467Stefan RichterMODULE_DEVICE_TABLE(ieee1394, fwnet_id_table); 1679