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authorStefan Richter <stefanr@s5r6.in-berlin.de>2009-06-07 16:57:53 -0400
committerStefan Richter <stefanr@s5r6.in-berlin.de>2009-06-14 08:26:29 -0400
commitf91e3bd842ec6f5cea245993926ee8ff26250467 (patch)
treec7b66078c862a85fdc7d21bc2eb61f9c32a530ca /drivers/firewire
parentb9530fd6c3f057bda258c8e2631ad1a25959f4a2 (diff)
firewire: net: style changes
Change names of types, variables, functions. Omit debug code. Use get_unaligned*, put_unaligned*. Annotate big endian data. Handle errors in __init. Change whitespace. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire')
-rw-r--r--drivers/firewire/core-card.c2
-rw-r--r--drivers/firewire/net.c2041
2 files changed, 966 insertions, 1077 deletions
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index cdab32b20675..8c45e43da7c5 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -430,7 +430,7 @@ void fw_card_initialize(struct fw_card *card,
430 430
431 INIT_DELAYED_WORK(&card->work, fw_card_bm_work); 431 INIT_DELAYED_WORK(&card->work, fw_card_bm_work);
432 card->netdev = NULL; 432 card->netdev = NULL;
433 INIT_LIST_HEAD(&card->ipv4_nodes); 433 INIT_LIST_HEAD(&card->peer_list);
434} 434}
435EXPORT_SYMBOL(fw_card_initialize); 435EXPORT_SYMBOL(fw_card_initialize);
436 436
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 15353886bd80..ba6f924b1b13 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -6,6 +6,7 @@
6 * based on eth1394 by Ben Collins et al 6 * based on eth1394 by Ben Collins et al
7 */ 7 */
8 8
9#include <linux/bug.h>
9#include <linux/device.h> 10#include <linux/device.h>
10#include <linux/ethtool.h> 11#include <linux/ethtool.h>
11#include <linux/firewire.h> 12#include <linux/firewire.h>
@@ -13,6 +14,7 @@
13#include <linux/highmem.h> 14#include <linux/highmem.h>
14#include <linux/in.h> 15#include <linux/in.h>
15#include <linux/ip.h> 16#include <linux/ip.h>
17#include <linux/jiffies.h>
16#include <linux/mod_devicetable.h> 18#include <linux/mod_devicetable.h>
17#include <linux/module.h> 19#include <linux/module.h>
18#include <linux/moduleparam.h> 20#include <linux/moduleparam.h>
@@ -22,181 +24,109 @@
22#include <asm/unaligned.h> 24#include <asm/unaligned.h>
23#include <net/arp.h> 25#include <net/arp.h>
24 26
25/* Things to potentially make runtime cofigurable */ 27#define FWNET_MAX_FRAGMENTS 25 /* arbitrary limit */
26/* must be at least as large as our maximum receive size */ 28#define FWNET_ISO_PAGE_COUNT (PAGE_SIZE < 16 * 1024 ? 4 : 2)
27#define FIFO_SIZE 4096
28/* Network timeout in glibbles */
29#define IPV4_TIMEOUT 100000
30 29
31/* Runitme configurable paramaters */ 30#define IEEE1394_BROADCAST_CHANNEL 31
32static int ipv4_mpd = 25; 31#define IEEE1394_ALL_NODES (0xffc0 | 0x003f)
33static int ipv4_max_xmt = 0; 32#define IEEE1394_MAX_PAYLOAD_S100 512
34/* 16k for receiving arp and broadcast packets. Enough? */ 33#define FWNET_NO_FIFO_ADDR (~0ULL)
35static int ipv4_iso_page_count = 4;
36 34
37MODULE_AUTHOR("Jay Fenlason (fenlason@redhat.com)"); 35#define IANA_SPECIFIER_ID 0x00005eU
38MODULE_DESCRIPTION("Firewire IPv4 Driver (IPv4-over-IEEE1394 as per RFC 2734)"); 36#define RFC2734_SW_VERSION 0x000001U
39MODULE_LICENSE("GPL");
40MODULE_DEVICE_TABLE(ieee1394, ipv4_id_table);
41module_param_named(max_partial_datagrams, ipv4_mpd, int, S_IRUGO | S_IWUSR);
42MODULE_PARM_DESC(max_partial_datagrams, "Maximum number of received"
43 " incomplete fragmented datagrams (default = 25).");
44
45/* Max xmt is useful for forcing fragmentation, which makes testing easier. */
46module_param_named(max_transmit, ipv4_max_xmt, int, S_IRUGO | S_IWUSR);
47MODULE_PARM_DESC(max_transmit, "Maximum datagram size to transmit"
48 " (larger datagrams will be fragmented) (default = 0 (use hardware defaults).");
49
50/* iso page count controls how many pages will be used for receiving broadcast packets. */
51module_param_named(iso_pages, ipv4_iso_page_count, int, S_IRUGO | S_IWUSR);
52MODULE_PARM_DESC(iso_pages, "Number of pages to use for receiving broadcast packets"
53 " (default = 4).");
54
55/* uncomment this line to do debugging */
56#define fw_debug(s, args...) printk(KERN_DEBUG KBUILD_MODNAME ": " s, ## args)
57
58/* comment out these lines to do debugging. */
59/* #undef fw_debug */
60/* #define fw_debug(s...) */
61/* #define print_hex_dump(l...) */
62
63/* Define a fake hardware header format for the networking core. Note that
64 * header size cannot exceed 16 bytes as that is the size of the header cache.
65 * Also, we do not need the source address in the header so we omit it and
66 * keep the header to under 16 bytes */
67#define IPV4_ALEN (8)
68/* This must equal sizeof(struct ipv4_ether_hdr) */
69#define IPV4_HLEN (10)
70
71/* FIXME: what's a good size for this? */
72#define INVALID_FIFO_ADDR (u64)~0ULL
73
74/* Things specified by standards */
75#define BROADCAST_CHANNEL 31
76
77#define S100_BUFFER_SIZE 512
78#define MAX_BUFFER_SIZE 4096
79
80#define IPV4_GASP_SPECIFIER_ID 0x00005EU
81#define IPV4_GASP_VERSION 0x00000001U
82
83#define IPV4_GASP_OVERHEAD (2 * sizeof(u32)) /* for GASP header */
84
85#define IPV4_UNFRAG_HDR_SIZE sizeof(u32)
86#define IPV4_FRAG_HDR_SIZE (2 * sizeof(u32))
87#define IPV4_FRAG_OVERHEAD sizeof(u32)
88
89#define ALL_NODES (0xffc0 | 0x003f)
90
91#define IPV4_HDR_UNFRAG 0 /* unfragmented */
92#define IPV4_HDR_FIRSTFRAG 1 /* first fragment */
93#define IPV4_HDR_LASTFRAG 2 /* last fragment */
94#define IPV4_HDR_INTFRAG 3 /* interior fragment */
95
96/* Our arp packet (ARPHRD_IEEE1394) */
97/* FIXME: note that this is probably bogus on weird-endian machines */
98struct ipv4_arp {
99 u16 hw_type; /* 0x0018 */
100 u16 proto_type; /* 0x0806 */
101 u8 hw_addr_len; /* 16 */
102 u8 ip_addr_len; /* 4 */
103 u16 opcode; /* ARP Opcode */
104 /* Above is exactly the same format as struct arphdr */
105
106 u64 s_uniq_id; /* Sender's 64bit EUI */
107 u8 max_rec; /* Sender's max packet size */
108 u8 sspd; /* Sender's max speed */
109 u16 fifo_hi; /* hi 16bits of sender's FIFO addr */
110 u32 fifo_lo; /* lo 32bits of sender's FIFO addr */
111 u32 sip; /* Sender's IP Address */
112 u32 tip; /* IP Address of requested hw addr */
113} __attribute__((packed));
114 37
115struct ipv4_ether_hdr { 38#define IEEE1394_GASP_HDR_SIZE 8
116 unsigned char h_dest[IPV4_ALEN]; /* destination address */
117 unsigned short h_proto; /* packet type ID field */
118} __attribute__((packed));
119 39
120static inline struct ipv4_ether_hdr *ipv4_ether_hdr(const struct sk_buff *skb) 40#define RFC2374_UNFRAG_HDR_SIZE 4
121{ 41#define RFC2374_FRAG_HDR_SIZE 8
122 return (struct ipv4_ether_hdr *)skb_mac_header(skb); 42#define RFC2374_FRAG_OVERHEAD 4
123}
124 43
125enum ipv4_tx_type { 44#define RFC2374_HDR_UNFRAG 0 /* unfragmented */
126 IPV4_UNKNOWN = 0, 45#define RFC2374_HDR_FIRSTFRAG 1 /* first fragment */
127 IPV4_GASP = 1, 46#define RFC2374_HDR_LASTFRAG 2 /* last fragment */
128 IPV4_WRREQ = 2, 47#define RFC2374_HDR_INTFRAG 3 /* interior fragment */
129};
130 48
131enum ipv4_broadcast_state { 49#define RFC2734_HW_ADDR_LEN 16
132 IPV4_BROADCAST_ERROR,
133 IPV4_BROADCAST_RUNNING,
134 IPV4_BROADCAST_STOPPED,
135};
136 50
137#define ipv4_get_hdr_lf(h) (((h)->w0&0xC0000000)>>30) 51struct rfc2734_arp {
138#define ipv4_get_hdr_ether_type(h) (((h)->w0&0x0000FFFF) ) 52 __be16 hw_type; /* 0x0018 */
139#define ipv4_get_hdr_dg_size(h) (((h)->w0&0x0FFF0000)>>16) 53 __be16 proto_type; /* 0x0806 */
140#define ipv4_get_hdr_fg_off(h) (((h)->w0&0x00000FFF) ) 54 u8 hw_addr_len; /* 16 */
141#define ipv4_get_hdr_dgl(h) (((h)->w1&0xFFFF0000)>>16) 55 u8 ip_addr_len; /* 4 */
56 __be16 opcode; /* ARP Opcode */
57 /* Above is exactly the same format as struct arphdr */
142 58
143#define ipv4_set_hdr_lf(lf) (( lf)<<30) 59 __be64 s_uniq_id; /* Sender's 64bit EUI */
144#define ipv4_set_hdr_ether_type(et) (( et) ) 60 u8 max_rec; /* Sender's max packet size */
145#define ipv4_set_hdr_dg_size(dgs) ((dgs)<<16) 61 u8 sspd; /* Sender's max speed */
146#define ipv4_set_hdr_fg_off(fgo) ((fgo) ) 62 __be16 fifo_hi; /* hi 16bits of sender's FIFO addr */
63 __be32 fifo_lo; /* lo 32bits of sender's FIFO addr */
64 __be32 sip; /* Sender's IP Address */
65 __be32 tip; /* IP Address of requested hw addr */
66} __attribute__((packed));
147 67
148#define ipv4_set_hdr_dgl(dgl) ((dgl)<<16) 68/* This header format is specific to this driver implementation. */
69#define FWNET_ALEN 8
70#define FWNET_HLEN 10
71struct fwnet_header {
72 u8 h_dest[FWNET_ALEN]; /* destination address */
73 __be16 h_proto; /* packet type ID field */
74} __attribute__((packed));
149 75
150struct ipv4_hdr { 76/* IPv4 and IPv6 encapsulation header */
77struct rfc2734_header {
151 u32 w0; 78 u32 w0;
152 u32 w1; 79 u32 w1;
153}; 80};
154 81
155static inline void ipv4_make_uf_hdr( struct ipv4_hdr *hdr, unsigned ether_type) { 82#define fwnet_get_hdr_lf(h) (((h)->w0 & 0xc0000000) >> 30)
156 hdr->w0 = ipv4_set_hdr_lf(IPV4_HDR_UNFRAG) 83#define fwnet_get_hdr_ether_type(h) (((h)->w0 & 0x0000ffff))
157 |ipv4_set_hdr_ether_type(ether_type); 84#define fwnet_get_hdr_dg_size(h) (((h)->w0 & 0x0fff0000) >> 16)
158 fw_debug ( "Setting unfragmented header %p to %x\n", hdr, hdr->w0 ); 85#define fwnet_get_hdr_fg_off(h) (((h)->w0 & 0x00000fff))
159} 86#define fwnet_get_hdr_dgl(h) (((h)->w1 & 0xffff0000) >> 16)
160 87
161static inline void ipv4_make_ff_hdr ( struct ipv4_hdr *hdr, unsigned ether_type, unsigned dg_size, unsigned dgl ) { 88#define fwnet_set_hdr_lf(lf) ((lf) << 30)
162 hdr->w0 = ipv4_set_hdr_lf(IPV4_HDR_FIRSTFRAG) 89#define fwnet_set_hdr_ether_type(et) (et)
163 |ipv4_set_hdr_dg_size(dg_size) 90#define fwnet_set_hdr_dg_size(dgs) ((dgs) << 16)
164 |ipv4_set_hdr_ether_type(ether_type); 91#define fwnet_set_hdr_fg_off(fgo) (fgo)
165 hdr->w1 = ipv4_set_hdr_dgl(dgl);
166 fw_debug ( "Setting fragmented header %p to first_frag %x,%x (et %x, dgs %x, dgl %x)\n", hdr, hdr->w0, hdr->w1,
167 ether_type, dg_size, dgl );
168}
169 92
170static inline void ipv4_make_sf_hdr ( struct ipv4_hdr *hdr, unsigned lf, unsigned dg_size, unsigned fg_off, unsigned dgl) { 93#define fwnet_set_hdr_dgl(dgl) ((dgl) << 16)
171 hdr->w0 = ipv4_set_hdr_lf(lf)
172 |ipv4_set_hdr_dg_size(dg_size)
173 |ipv4_set_hdr_fg_off(fg_off);
174 hdr->w1 = ipv4_set_hdr_dgl(dgl);
175 fw_debug ( "Setting fragmented header %p to %x,%x (lf %x, dgs %x, fo %x dgl %x)\n",
176 hdr, hdr->w0, hdr->w1,
177 lf, dg_size, fg_off, dgl );
178}
179 94
180/* End of IP1394 headers */ 95static inline void fwnet_make_uf_hdr(struct rfc2734_header *hdr,
96 unsigned ether_type)
97{
98 hdr->w0 = fwnet_set_hdr_lf(RFC2374_HDR_UNFRAG)
99 | fwnet_set_hdr_ether_type(ether_type);
100}
181 101
182/* Fragment types */ 102static inline void fwnet_make_ff_hdr(struct rfc2734_header *hdr,
183#define ETH1394_HDR_LF_UF 0 /* unfragmented */ 103 unsigned ether_type, unsigned dg_size, unsigned dgl)
184#define ETH1394_HDR_LF_FF 1 /* first fragment */ 104{
185#define ETH1394_HDR_LF_LF 2 /* last fragment */ 105 hdr->w0 = fwnet_set_hdr_lf(RFC2374_HDR_FIRSTFRAG)
186#define ETH1394_HDR_LF_IF 3 /* interior fragment */ 106 | fwnet_set_hdr_dg_size(dg_size)
107 | fwnet_set_hdr_ether_type(ether_type);
108 hdr->w1 = fwnet_set_hdr_dgl(dgl);
109}
187 110
188#define IP1394_HW_ADDR_LEN 16 /* As per RFC */ 111static inline void fwnet_make_sf_hdr(struct rfc2734_header *hdr,
112 unsigned lf, unsigned dg_size, unsigned fg_off, unsigned dgl)
113{
114 hdr->w0 = fwnet_set_hdr_lf(lf)
115 | fwnet_set_hdr_dg_size(dg_size)
116 | fwnet_set_hdr_fg_off(fg_off);
117 hdr->w1 = fwnet_set_hdr_dgl(dgl);
118}
189 119
190/* This list keeps track of what parts of the datagram have been filled in */ 120/* This list keeps track of what parts of the datagram have been filled in */
191struct ipv4_fragment_info { 121struct fwnet_fragment_info {
192 struct list_head fragment_info; 122 struct list_head fi_link;
193 u16 offset; 123 u16 offset;
194 u16 len; 124 u16 len;
195}; 125};
196 126
197struct ipv4_partial_datagram { 127struct fwnet_partial_datagram {
198 struct list_head pdg_list; 128 struct list_head pd_link;
199 struct list_head fragment_info; 129 struct list_head fi_list;
200 struct sk_buff *skb; 130 struct sk_buff *skb;
201 /* FIXME Why not use skb->data? */ 131 /* FIXME Why not use skb->data? */
202 char *pbuf; 132 char *pbuf;
@@ -208,40 +138,43 @@ struct ipv4_partial_datagram {
208/* 138/*
209 * We keep one of these for each IPv4 capable device attached to a fw_card. 139 * We keep one of these for each IPv4 capable device attached to a fw_card.
210 * The list of them is stored in the fw_card structure rather than in the 140 * The list of them is stored in the fw_card structure rather than in the
211 * ipv4_priv because the remote IPv4 nodes may be probed before the card is, 141 * fwnet_device because the remote IPv4 nodes may be probed before the card is,
212 * so we need a place to store them before the ipv4_priv structure is 142 * so we need a place to store them before the fwnet_device structure is
213 * allocated. 143 * allocated.
214 */ 144 */
215struct ipv4_node { 145struct fwnet_peer {
216 struct list_head ipv4_nodes; 146 struct list_head peer_link;
217 /* guid of the remote node */ 147 /* guid of the remote peer */
218 u64 guid; 148 u64 guid;
219 /* FIFO address to transmit datagrams to, or INVALID_FIFO_ADDR */ 149 /* FIFO address to transmit datagrams to, or FWNET_NO_FIFO_ADDR */
220 u64 fifo; 150 u64 fifo;
221 151
222 spinlock_t pdg_lock; /* partial datagram lock */ 152 spinlock_t pdg_lock; /* partial datagram lock */
223 /* List of partial datagrams received from this node */ 153 /* List of partial datagrams received from this peer */
224 struct list_head pdg_list; 154 struct list_head pd_list;
225 /* Number of entries in pdg_list at the moment */ 155 /* Number of entries in pd_list at the moment */
226 unsigned pdg_size; 156 unsigned pdg_size;
227 157
228 /* max payload to transmit to this remote node */ 158 /* max payload to transmit to this remote peer */
229 /* This already includes the IPV4_FRAG_HDR_SIZE overhead */ 159 /* This already includes the RFC2374_FRAG_HDR_SIZE overhead */
230 u16 max_payload; 160 u16 max_payload;
231 /* outgoing datagram label */ 161 /* outgoing datagram label */
232 u16 datagram_label; 162 u16 datagram_label;
233 /* Current node_id of the remote node */ 163 /* Current node_id of the remote peer */
234 u16 nodeid; 164 u16 node_id;
235 /* current generation of the remote node */ 165 /* current generation of the remote peer */
236 u8 generation; 166 u8 generation;
237 /* max speed that this node can receive at */ 167 /* max speed that this peer can receive at */
238 u8 xmt_speed; 168 u8 xmt_speed;
239}; 169};
240 170
241struct ipv4_priv { 171struct fwnet_device {
242 spinlock_t lock; 172 spinlock_t lock;
243 173 enum {
244 enum ipv4_broadcast_state broadcast_state; 174 FWNET_BROADCAST_ERROR,
175 FWNET_BROADCAST_RUNNING,
176 FWNET_BROADCAST_STOPPED,
177 } broadcast_state;
245 struct fw_iso_context *broadcast_rcv_context; 178 struct fw_iso_context *broadcast_rcv_context;
246 struct fw_iso_buffer broadcast_rcv_buffer; 179 struct fw_iso_buffer broadcast_rcv_buffer;
247 void **broadcast_rcv_buffer_ptrs; 180 void **broadcast_rcv_buffer_ptrs;
@@ -257,14 +190,12 @@ struct ipv4_priv {
257 u16 broadcast_xmt_datagramlabel; 190 u16 broadcast_xmt_datagramlabel;
258 191
259 /* 192 /*
260 * The csr address that remote nodes must send datagrams to for us to 193 * The CSR address that remote nodes must send datagrams to for us to
261 * receive them. 194 * receive them.
262 */ 195 */
263 struct fw_address_handler handler; 196 struct fw_address_handler handler;
264 u64 local_fifo; 197 u64 local_fifo;
265 198
266 /* Wake up to xmt */
267 /* struct work_struct wake;*/
268 /* List of packets to be sent */ 199 /* List of packets to be sent */
269 struct list_head packet_list; 200 struct list_head packet_list;
270 /* 201 /*
@@ -279,17 +210,17 @@ struct ipv4_priv {
279}; 210};
280 211
281/* This is our task struct. It's used for the packet complete callback. */ 212/* This is our task struct. It's used for the packet complete callback. */
282struct ipv4_packet_task { 213struct fwnet_packet_task {
283 /* 214 /*
284 * ptask can actually be on priv->packet_list, priv->broadcasted_list, 215 * ptask can actually be on dev->packet_list, dev->broadcasted_list,
285 * or priv->sent_list depending on its current state. 216 * or dev->sent_list depending on its current state.
286 */ 217 */
287 struct list_head packet_list; 218 struct list_head pt_link;
288 struct fw_transaction transaction; 219 struct fw_transaction transaction;
289 struct ipv4_hdr hdr; 220 struct rfc2734_header hdr;
290 struct sk_buff *skb; 221 struct sk_buff *skb;
291 struct ipv4_priv *priv; 222 struct fwnet_device *dev;
292 enum ipv4_tx_type tx_type; 223
293 int outstanding_pkts; 224 int outstanding_pkts;
294 unsigned max_payload; 225 unsigned max_payload;
295 u64 fifo_addr; 226 u64 fifo_addr;
@@ -298,243 +229,192 @@ struct ipv4_packet_task {
298 u8 speed; 229 u8 speed;
299}; 230};
300 231
301static struct kmem_cache *ipv4_packet_task_cache; 232/*
302 233 * saddr == NULL means use device source address.
303static const char ipv4_driver_name[] = "firewire-ipv4"; 234 * daddr == NULL means leave destination address (eg unresolved arp).
304 235 */
305static const struct ieee1394_device_id ipv4_id_table[] = { 236static int fwnet_header_create(struct sk_buff *skb, struct net_device *net,
306 { 237 unsigned short type, const void *daddr,
307 .match_flags = IEEE1394_MATCH_SPECIFIER_ID | 238 const void *saddr, unsigned len)
308 IEEE1394_MATCH_VERSION, 239{
309 .specifier_id = IPV4_GASP_SPECIFIER_ID, 240 struct fwnet_header *h;
310 .version = IPV4_GASP_VERSION,
311 },
312 { }
313};
314
315static u32 ipv4_unit_directory_data[] = {
316 0x00040000, /* unit directory */
317 0x12000000 | IPV4_GASP_SPECIFIER_ID, /* specifier ID */
318 0x81000003, /* text descriptor */
319 0x13000000 | IPV4_GASP_VERSION, /* version */
320 0x81000005, /* text descriptor */
321
322 0x00030000, /* Three quadlets */
323 0x00000000, /* Text */
324 0x00000000, /* Language 0 */
325 0x49414e41, /* I A N A */
326 0x00030000, /* Three quadlets */
327 0x00000000, /* Text */
328 0x00000000, /* Language 0 */
329 0x49507634, /* I P v 4 */
330};
331
332static struct fw_descriptor ipv4_unit_directory = {
333 .length = ARRAY_SIZE(ipv4_unit_directory_data),
334 .key = 0xd1000000,
335 .data = ipv4_unit_directory_data
336};
337
338static int ipv4_send_packet(struct ipv4_packet_task *ptask );
339
340/* ------------------------------------------------------------------ */
341/******************************************
342 * HW Header net device functions
343 ******************************************/
344 /* These functions have been adapted from net/ethernet/eth.c */
345
346/* Create a fake MAC header for an arbitrary protocol layer.
347 * saddr=NULL means use device source address
348 * daddr=NULL means leave destination address (eg unresolved arp). */
349 241
350static int ipv4_header ( struct sk_buff *skb, struct net_device *dev, 242 h = (struct fwnet_header *)skb_push(skb, sizeof(*h));
351 unsigned short type, const void *daddr, 243 put_unaligned_be16(type, &h->h_proto);
352 const void *saddr, unsigned len) {
353 struct ipv4_ether_hdr *eth;
354 244
355 eth = (struct ipv4_ether_hdr *)skb_push(skb, sizeof(*eth)); 245 if (net->flags & (IFF_LOOPBACK | IFF_NOARP)) {
356 eth->h_proto = htons(type); 246 memset(h->h_dest, 0, net->addr_len);
357 247
358 if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) { 248 return net->hard_header_len;
359 memset(eth->h_dest, 0, dev->addr_len);
360 return dev->hard_header_len;
361 } 249 }
362 250
363 if (daddr) { 251 if (daddr) {
364 memcpy(eth->h_dest, daddr, dev->addr_len); 252 memcpy(h->h_dest, daddr, net->addr_len);
365 return dev->hard_header_len; 253
254 return net->hard_header_len;
366 } 255 }
367 256
368 return -dev->hard_header_len; 257 return -net->hard_header_len;
369} 258}
370 259
371/* Rebuild the faked MAC header. This is called after an ARP 260static int fwnet_header_rebuild(struct sk_buff *skb)
372 * (or in future other address resolution) has completed on this
373 * sk_buff. We now let ARP fill in the other fields.
374 *
375 * This routine CANNOT use cached dst->neigh!
376 * Really, it is used only when dst->neigh is wrong.
377 */
378
379static int ipv4_rebuild_header(struct sk_buff *skb)
380{ 261{
381 struct ipv4_ether_hdr *eth; 262 struct fwnet_header *h = (struct fwnet_header *)skb->data;
382 263
383 eth = (struct ipv4_ether_hdr *)skb->data; 264 if (get_unaligned_be16(&h->h_proto) == ETH_P_IP)
384 if (eth->h_proto == htons(ETH_P_IP)) 265 return arp_find((unsigned char *)&h->h_dest, skb);
385 return arp_find((unsigned char *)&eth->h_dest, skb);
386 266
387 fw_notify ( "%s: unable to resolve type %04x addresses\n", 267 fw_notify("%s: unable to resolve type %04x addresses\n",
388 skb->dev->name,ntohs(eth->h_proto) ); 268 skb->dev->name, be16_to_cpu(h->h_proto));
389 return 0; 269 return 0;
390} 270}
391 271
392static int ipv4_header_cache(const struct neighbour *neigh, struct hh_cache *hh) { 272static int fwnet_header_cache(const struct neighbour *neigh,
393 unsigned short type = hh->hh_type; 273 struct hh_cache *hh)
394 struct net_device *dev; 274{
395 struct ipv4_ether_hdr *eth; 275 struct net_device *net;
276 struct fwnet_header *h;
396 277
397 if (type == htons(ETH_P_802_3)) 278 if (hh->hh_type == cpu_to_be16(ETH_P_802_3))
398 return -1; 279 return -1;
399 dev = neigh->dev; 280 net = neigh->dev;
400 eth = (struct ipv4_ether_hdr *)((u8 *)hh->hh_data + 16 - sizeof(*eth)); 281 h = (struct fwnet_header *)((u8 *)hh->hh_data + 16 - sizeof(*h));
401 eth->h_proto = type; 282 h->h_proto = hh->hh_type;
402 memcpy(eth->h_dest, neigh->ha, dev->addr_len); 283 memcpy(h->h_dest, neigh->ha, net->addr_len);
284 hh->hh_len = FWNET_HLEN;
403 285
404 hh->hh_len = IPV4_HLEN;
405 return 0; 286 return 0;
406} 287}
407 288
408/* Called by Address Resolution module to notify changes in address. */ 289/* Called by Address Resolution module to notify changes in address. */
409static void ipv4_header_cache_update(struct hh_cache *hh, const struct net_device *dev, const unsigned char * haddr ) { 290static void fwnet_header_cache_update(struct hh_cache *hh,
410 memcpy((u8 *)hh->hh_data + 16 - IPV4_HLEN, haddr, dev->addr_len); 291 const struct net_device *net, const unsigned char *haddr)
292{
293 memcpy((u8 *)hh->hh_data + 16 - FWNET_HLEN, haddr, net->addr_len);
411} 294}
412 295
413static int ipv4_header_parse(const struct sk_buff *skb, unsigned char *haddr) { 296static int fwnet_header_parse(const struct sk_buff *skb, unsigned char *haddr)
414 memcpy(haddr, skb->dev->dev_addr, IPV4_ALEN); 297{
415 return IPV4_ALEN; 298 memcpy(haddr, skb->dev->dev_addr, FWNET_ALEN);
299
300 return FWNET_ALEN;
416} 301}
417 302
418static const struct header_ops ipv4_header_ops = { 303static const struct header_ops fwnet_header_ops = {
419 .create = ipv4_header, 304 .create = fwnet_header_create,
420 .rebuild = ipv4_rebuild_header, 305 .rebuild = fwnet_header_rebuild,
421 .cache = ipv4_header_cache, 306 .cache = fwnet_header_cache,
422 .cache_update = ipv4_header_cache_update, 307 .cache_update = fwnet_header_cache_update,
423 .parse = ipv4_header_parse, 308 .parse = fwnet_header_parse,
424}; 309};
425 310
426/* ------------------------------------------------------------------ */
427
428/* FIXME: is this correct for all cases? */ 311/* FIXME: is this correct for all cases? */
429static bool ipv4_frag_overlap(struct ipv4_partial_datagram *pd, unsigned offset, unsigned len) 312static bool fwnet_frag_overlap(struct fwnet_partial_datagram *pd,
313 unsigned offset, unsigned len)
430{ 314{
431 struct ipv4_fragment_info *fi; 315 struct fwnet_fragment_info *fi;
432 unsigned end = offset + len; 316 unsigned end = offset + len;
433 317
434 list_for_each_entry(fi, &pd->fragment_info, fragment_info) { 318 list_for_each_entry(fi, &pd->fi_list, fi_link)
435 if (offset < fi->offset + fi->len && end > fi->offset) { 319 if (offset < fi->offset + fi->len && end > fi->offset)
436 fw_debug ( "frag_overlap pd %p fi %p (%x@%x) with %x@%x\n", pd, fi, fi->len, fi->offset, len, offset );
437 return true; 320 return true;
438 } 321
439 }
440 fw_debug ( "frag_overlap %p does not overlap with %x@%x\n", pd, len, offset );
441 return false; 322 return false;
442} 323}
443 324
444/* Assumes that new fragment does not overlap any existing fragments */ 325/* Assumes that new fragment does not overlap any existing fragments */
445static struct ipv4_fragment_info *ipv4_frag_new ( struct ipv4_partial_datagram *pd, unsigned offset, unsigned len ) { 326static struct fwnet_fragment_info *fwnet_frag_new(
446 struct ipv4_fragment_info *fi, *fi2, *new; 327 struct fwnet_partial_datagram *pd, unsigned offset, unsigned len)
328{
329 struct fwnet_fragment_info *fi, *fi2, *new;
447 struct list_head *list; 330 struct list_head *list;
448 331
449 fw_debug ( "frag_new pd %p %x@%x\n", pd, len, offset ); 332 list = &pd->fi_list;
450 list = &pd->fragment_info; 333 list_for_each_entry(fi, &pd->fi_list, fi_link) {
451 list_for_each_entry(fi, &pd->fragment_info, fragment_info) {
452 if (fi->offset + fi->len == offset) { 334 if (fi->offset + fi->len == offset) {
453 /* The new fragment can be tacked on to the end */ 335 /* The new fragment can be tacked on to the end */
454 /* Did the new fragment plug a hole? */ 336 /* Did the new fragment plug a hole? */
455 fi2 = list_entry(fi->fragment_info.next, struct ipv4_fragment_info, fragment_info); 337 fi2 = list_entry(fi->fi_link.next,
338 struct fwnet_fragment_info, fi_link);
456 if (fi->offset + fi->len == fi2->offset) { 339 if (fi->offset + fi->len == fi2->offset) {
457 fw_debug ( "pd %p: hole filling %p (%x@%x) and %p(%x@%x): now %x@%x\n", pd, fi, fi->len, fi->offset,
458 fi2, fi2->len, fi2->offset, fi->len + len + fi2->len, fi->offset );
459 /* glue fragments together */ 340 /* glue fragments together */
460 fi->len += len + fi2->len; 341 fi->len += len + fi2->len;
461 list_del(&fi2->fragment_info); 342 list_del(&fi2->fi_link);
462 kfree(fi2); 343 kfree(fi2);
463 } else { 344 } else {
464 fw_debug ( "pd %p: extending %p from %x@%x to %x@%x\n", pd, fi, fi->len, fi->offset, fi->len+len, fi->offset );
465 fi->len += len; 345 fi->len += len;
466 } 346 }
347
467 return fi; 348 return fi;
468 } 349 }
469 if (offset + len == fi->offset) { 350 if (offset + len == fi->offset) {
470 /* The new fragment can be tacked on to the beginning */ 351 /* The new fragment can be tacked on to the beginning */
471 /* Did the new fragment plug a hole? */ 352 /* Did the new fragment plug a hole? */
472 fi2 = list_entry(fi->fragment_info.prev, struct ipv4_fragment_info, fragment_info); 353 fi2 = list_entry(fi->fi_link.prev,
354 struct fwnet_fragment_info, fi_link);
473 if (fi2->offset + fi2->len == fi->offset) { 355 if (fi2->offset + fi2->len == fi->offset) {
474 /* glue fragments together */ 356 /* glue fragments together */
475 fw_debug ( "pd %p: extending %p and merging with %p from %x@%x to %x@%x\n",
476 pd, fi2, fi, fi2->len, fi2->offset, fi2->len + fi->len + len, fi2->offset );
477 fi2->len += fi->len + len; 357 fi2->len += fi->len + len;
478 list_del(&fi->fragment_info); 358 list_del(&fi->fi_link);
479 kfree(fi); 359 kfree(fi);
360
480 return fi2; 361 return fi2;
481 } 362 }
482 fw_debug ( "pd %p: extending %p from %x@%x to %x@%x\n", pd, fi, fi->len, fi->offset, offset, fi->len + len );
483 fi->offset = offset; 363 fi->offset = offset;
484 fi->len += len; 364 fi->len += len;
365
485 return fi; 366 return fi;
486 } 367 }
487 if (offset > fi->offset + fi->len) { 368 if (offset > fi->offset + fi->len) {
488 list = &fi->fragment_info; 369 list = &fi->fi_link;
489 break; 370 break;
490 } 371 }
491 if (offset + len < fi->offset) { 372 if (offset + len < fi->offset) {
492 list = fi->fragment_info.prev; 373 list = fi->fi_link.prev;
493 break; 374 break;
494 } 375 }
495 } 376 }
496 377
497 new = kmalloc(sizeof(*new), GFP_ATOMIC); 378 new = kmalloc(sizeof(*new), GFP_ATOMIC);
498 if (!new) { 379 if (!new) {
499 fw_error ( "out of memory in fragment handling!\n" ); 380 fw_error("out of memory\n");
500 return NULL; 381 return NULL;
501 } 382 }
502 383
503 new->offset = offset; 384 new->offset = offset;
504 new->len = len; 385 new->len = len;
505 list_add(&new->fragment_info, list); 386 list_add(&new->fi_link, list);
506 fw_debug ( "pd %p: new frag %p %x@%x\n", pd, new, new->len, new->offset ); 387
507 list_for_each_entry( fi, &pd->fragment_info, fragment_info )
508 fw_debug ( "fi %p %x@%x\n", fi, fi->len, fi->offset );
509 return new; 388 return new;
510} 389}
511 390
512/* ------------------------------------------------------------------ */ 391static struct fwnet_partial_datagram *fwnet_pd_new(struct net_device *net,
513 392 struct fwnet_peer *peer, u16 datagram_label, unsigned dg_size,
514static struct ipv4_partial_datagram *ipv4_pd_new(struct net_device *netdev, 393 void *frag_buf, unsigned frag_off, unsigned frag_len)
515 struct ipv4_node *node, u16 datagram_label, unsigned dg_size, u32 *frag_buf, 394{
516 unsigned frag_off, unsigned frag_len) { 395 struct fwnet_partial_datagram *new;
517 struct ipv4_partial_datagram *new; 396 struct fwnet_fragment_info *fi;
518 struct ipv4_fragment_info *fi;
519 397
520 new = kmalloc(sizeof(*new), GFP_ATOMIC); 398 new = kmalloc(sizeof(*new), GFP_ATOMIC);
521 if (!new) 399 if (!new)
522 goto fail; 400 goto fail;
523 INIT_LIST_HEAD(&new->fragment_info); 401
524 fi = ipv4_frag_new ( new, frag_off, frag_len); 402 INIT_LIST_HEAD(&new->fi_list);
525 if ( fi == NULL ) 403 fi = fwnet_frag_new(new, frag_off, frag_len);
404 if (fi == NULL)
526 goto fail_w_new; 405 goto fail_w_new;
406
527 new->datagram_label = datagram_label; 407 new->datagram_label = datagram_label;
528 new->datagram_size = dg_size; 408 new->datagram_size = dg_size;
529 new->skb = dev_alloc_skb(dg_size + netdev->hard_header_len + 15); 409 new->skb = dev_alloc_skb(dg_size + net->hard_header_len + 15);
530 if ( new->skb == NULL ) 410 if (new->skb == NULL)
531 goto fail_w_fi; 411 goto fail_w_fi;
532 skb_reserve(new->skb, (netdev->hard_header_len + 15) & ~15); 412
413 skb_reserve(new->skb, (net->hard_header_len + 15) & ~15);
533 new->pbuf = skb_put(new->skb, dg_size); 414 new->pbuf = skb_put(new->skb, dg_size);
534 memcpy(new->pbuf + frag_off, frag_buf, frag_len); 415 memcpy(new->pbuf + frag_off, frag_buf, frag_len);
535 list_add_tail(&new->pdg_list, &node->pdg_list); 416 list_add_tail(&new->pd_link, &peer->pd_list);
536 fw_debug ( "pd_new: new pd %p { dgl %u, dg_size %u, skb %p, pbuf %p } on node %p\n", 417
537 new, new->datagram_label, new->datagram_size, new->skb, new->pbuf, node );
538 return new; 418 return new;
539 419
540fail_w_fi: 420fail_w_fi:
@@ -542,174 +422,171 @@ fail_w_fi:
542fail_w_new: 422fail_w_new:
543 kfree(new); 423 kfree(new);
544fail: 424fail:
545 fw_error("ipv4_pd_new: no memory\n"); 425 fw_error("out of memory\n");
426
546 return NULL; 427 return NULL;
547} 428}
548 429
549static struct ipv4_partial_datagram *ipv4_pd_find(struct ipv4_node *node, u16 datagram_label) { 430static struct fwnet_partial_datagram *fwnet_pd_find(struct fwnet_peer *peer,
550 struct ipv4_partial_datagram *pd; 431 u16 datagram_label)
432{
433 struct fwnet_partial_datagram *pd;
551 434
552 list_for_each_entry(pd, &node->pdg_list, pdg_list) { 435 list_for_each_entry(pd, &peer->pd_list, pd_link)
553 if ( pd->datagram_label == datagram_label ) { 436 if (pd->datagram_label == datagram_label)
554 fw_debug ( "pd_find(node %p, label %u): pd %p\n", node, datagram_label, pd );
555 return pd; 437 return pd;
556 } 438
557 }
558 fw_debug ( "pd_find(node %p, label %u) no entry\n", node, datagram_label );
559 return NULL; 439 return NULL;
560} 440}
561 441
562 442
563static void ipv4_pd_delete ( struct ipv4_partial_datagram *old ) { 443static void fwnet_pd_delete(struct fwnet_partial_datagram *old)
564 struct ipv4_fragment_info *fi, *n; 444{
445 struct fwnet_fragment_info *fi, *n;
565 446
566 fw_debug ( "pd_delete %p\n", old ); 447 list_for_each_entry_safe(fi, n, &old->fi_list, fi_link)
567 list_for_each_entry_safe(fi, n, &old->fragment_info, fragment_info) {
568 fw_debug ( "Freeing fi %p\n", fi );
569 kfree(fi); 448 kfree(fi);
570 } 449
571 list_del(&old->pdg_list); 450 list_del(&old->pd_link);
572 dev_kfree_skb_any(old->skb); 451 dev_kfree_skb_any(old->skb);
573 kfree(old); 452 kfree(old);
574} 453}
575 454
576static bool ipv4_pd_update ( struct ipv4_node *node, struct ipv4_partial_datagram *pd, 455static bool fwnet_pd_update(struct fwnet_peer *peer,
577 u32 *frag_buf, unsigned frag_off, unsigned frag_len) { 456 struct fwnet_partial_datagram *pd, void *frag_buf,
578 fw_debug ( "pd_update node %p, pd %p, frag_buf %p, %x@%x\n", node, pd, frag_buf, frag_len, frag_off ); 457 unsigned frag_off, unsigned frag_len)
579 if ( ipv4_frag_new ( pd, frag_off, frag_len ) == NULL) 458{
459 if (fwnet_frag_new(pd, frag_off, frag_len) == NULL)
580 return false; 460 return false;
461
581 memcpy(pd->pbuf + frag_off, frag_buf, frag_len); 462 memcpy(pd->pbuf + frag_off, frag_buf, frag_len);
582 463
583 /* 464 /*
584 * Move list entry to beginnig of list so that oldest partial 465 * Move list entry to beginnig of list so that oldest partial
585 * datagrams percolate to the end of the list 466 * datagrams percolate to the end of the list
586 */ 467 */
587 list_move_tail(&pd->pdg_list, &node->pdg_list); 468 list_move_tail(&pd->pd_link, &peer->pd_list);
588 fw_debug ( "New pd list:\n" ); 469
589 list_for_each_entry ( pd, &node->pdg_list, pdg_list ) {
590 fw_debug ( "pd %p\n", pd );
591 }
592 return true; 470 return true;
593} 471}
594 472
595static bool ipv4_pd_is_complete ( struct ipv4_partial_datagram *pd ) { 473static bool fwnet_pd_is_complete(struct fwnet_partial_datagram *pd)
596 struct ipv4_fragment_info *fi; 474{
597 bool ret; 475 struct fwnet_fragment_info *fi;
598 476
599 fi = list_entry(pd->fragment_info.next, struct ipv4_fragment_info, fragment_info); 477 fi = list_entry(pd->fi_list.next, struct fwnet_fragment_info, fi_link);
600 478
601 ret = (fi->len == pd->datagram_size); 479 return fi->len == pd->datagram_size;
602 fw_debug ( "pd_is_complete (pd %p, dgs %x): fi %p (%x@%x) %s\n", pd, pd->datagram_size, fi, fi->len, fi->offset, ret ? "yes" : "no" );
603 return ret;
604} 480}
605 481
606/* ------------------------------------------------------------------ */ 482static int fwnet_peer_new(struct fw_card *card, struct fw_device *device)
483{
484 struct fwnet_peer *peer;
607 485
608static int ipv4_node_new ( struct fw_card *card, struct fw_device *device ) { 486 peer = kmalloc(sizeof(*peer), GFP_KERNEL);
609 struct ipv4_node *node; 487 if (!peer) {
488 fw_error("out of memory\n");
610 489
611 node = kmalloc ( sizeof(*node), GFP_KERNEL );
612 if ( ! node ) {
613 fw_error ( "allocate new node failed\n" );
614 return -ENOMEM; 490 return -ENOMEM;
615 } 491 }
616 node->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4]; 492 peer->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
617 node->fifo = INVALID_FIFO_ADDR; 493 peer->fifo = FWNET_NO_FIFO_ADDR;
618 INIT_LIST_HEAD(&node->pdg_list); 494 INIT_LIST_HEAD(&peer->pd_list);
619 spin_lock_init(&node->pdg_lock); 495 spin_lock_init(&peer->pdg_lock);
620 node->pdg_size = 0; 496 peer->pdg_size = 0;
621 node->generation = device->generation; 497 peer->generation = device->generation;
622 rmb(); 498 rmb();
623 node->nodeid = device->node_id; 499 peer->node_id = device->node_id;
624 /* FIXME what should it really be? */ 500 /* FIXME what should it really be? */
625 node->max_payload = S100_BUFFER_SIZE - IPV4_UNFRAG_HDR_SIZE; 501 peer->max_payload = IEEE1394_MAX_PAYLOAD_S100 - RFC2374_UNFRAG_HDR_SIZE;
626 node->datagram_label = 0U; 502 peer->datagram_label = 0U;
627 node->xmt_speed = device->max_speed; 503 peer->xmt_speed = device->max_speed;
628 list_add_tail ( &node->ipv4_nodes, &card->ipv4_nodes ); 504 list_add_tail(&peer->peer_link, &card->peer_list);
629 fw_debug ( "node_new: %p { guid %016llx, generation %u, nodeid %x, max_payload %x, xmt_speed %x } added\n", 505
630 node, (unsigned long long)node->guid, node->generation, node->nodeid, node->max_payload, node->xmt_speed );
631 return 0; 506 return 0;
632} 507}
633 508
634static struct ipv4_node *ipv4_node_find_by_guid(struct ipv4_priv *priv, u64 guid) { 509/* FIXME caller must take the lock, or peer needs to be reference-counted */
635 struct ipv4_node *node; 510static struct fwnet_peer *fwnet_peer_find_by_guid(struct fwnet_device *dev,
511 u64 guid)
512{
513 struct fwnet_peer *p, *peer = NULL;
636 unsigned long flags; 514 unsigned long flags;
637 515
638 spin_lock_irqsave(&priv->lock, flags); 516 spin_lock_irqsave(&dev->lock, flags);
639 list_for_each_entry(node, &priv->card->ipv4_nodes, ipv4_nodes) 517 list_for_each_entry(p, &dev->card->peer_list, peer_link)
640 if (node->guid == guid) { 518 if (p->guid == guid) {
641 /* FIXME: lock the node first? */ 519 peer = p;
642 spin_unlock_irqrestore ( &priv->lock, flags ); 520 break;
643 fw_debug ( "node_find_by_guid (%016llx) found %p\n", (unsigned long long)guid, node );
644 return node;
645 } 521 }
522 spin_unlock_irqrestore(&dev->lock, flags);
646 523
647 spin_unlock_irqrestore ( &priv->lock, flags ); 524 return peer;
648 fw_debug ( "node_find_by_guid (%016llx) not found\n", (unsigned long long)guid );
649 return NULL;
650} 525}
651 526
652static struct ipv4_node *ipv4_node_find_by_nodeid(struct ipv4_priv *priv, u16 nodeid) { 527/* FIXME caller must take the lock, or peer needs to be reference-counted */
653 struct ipv4_node *node; 528/* FIXME node_id doesn't mean anything without generation */
529static struct fwnet_peer *fwnet_peer_find_by_node_id(struct fwnet_device *dev,
530 u16 node_id)
531{
532 struct fwnet_peer *p, *peer = NULL;
654 unsigned long flags; 533 unsigned long flags;
655 534
656 spin_lock_irqsave(&priv->lock, flags); 535 spin_lock_irqsave(&dev->lock, flags);
657 list_for_each_entry(node, &priv->card->ipv4_nodes, ipv4_nodes) 536 list_for_each_entry(p, &dev->card->peer_list, peer_link)
658 if (node->nodeid == nodeid) { 537 if (p->node_id == node_id) {
659 /* FIXME: lock the node first? */ 538 peer = p;
660 spin_unlock_irqrestore ( &priv->lock, flags ); 539 break;
661 fw_debug ( "node_find_by_nodeid (%x) found %p\n", nodeid, node );
662 return node;
663 } 540 }
664 fw_debug ( "node_find_by_nodeid (%x) not found\n", nodeid ); 541 spin_unlock_irqrestore(&dev->lock, flags);
665 spin_unlock_irqrestore ( &priv->lock, flags ); 542
666 return NULL; 543 return peer;
667} 544}
668 545
669/* This is only complicated because we can't assume priv exists */ 546/* FIXME */
670static void ipv4_node_delete ( struct fw_card *card, struct fw_device *device ) { 547static void fwnet_peer_delete(struct fw_card *card, struct fw_device *device)
671 struct net_device *netdev; 548{
672 struct ipv4_priv *priv; 549 struct net_device *net;
673 struct ipv4_node *node; 550 struct fwnet_device *dev;
551 struct fwnet_peer *peer;
674 u64 guid; 552 u64 guid;
675 unsigned long flags; 553 unsigned long flags;
676 struct ipv4_partial_datagram *pd, *pd_next; 554 struct fwnet_partial_datagram *pd, *pd_next;
677 555
678 guid = (u64)device->config_rom[3] << 32 | device->config_rom[4]; 556 guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
679 netdev = card->netdev; 557 net = card->netdev;
680 if ( netdev ) 558 if (net)
681 priv = netdev_priv ( netdev ); 559 dev = netdev_priv(net);
682 else 560 else
683 priv = NULL; 561 dev = NULL;
684 if ( priv ) 562 if (dev)
685 spin_lock_irqsave ( &priv->lock, flags ); 563 spin_lock_irqsave(&dev->lock, flags);
686 list_for_each_entry( node, &card->ipv4_nodes, ipv4_nodes ) { 564
687 if ( node->guid == guid ) { 565 list_for_each_entry(peer, &card->peer_list, peer_link) {
688 list_del ( &node->ipv4_nodes ); 566 if (peer->guid == guid) {
689 list_for_each_entry_safe( pd, pd_next, &node->pdg_list, pdg_list ) 567 list_del(&peer->peer_link);
690 ipv4_pd_delete ( pd ); 568 list_for_each_entry_safe(pd, pd_next, &peer->pd_list,
569 pd_link)
570 fwnet_pd_delete(pd);
691 break; 571 break;
692 } 572 }
693 } 573 }
694 if ( priv ) 574 if (dev)
695 spin_unlock_irqrestore ( &priv->lock, flags ); 575 spin_unlock_irqrestore(&dev->lock, flags);
696} 576}
697 577
698/* ------------------------------------------------------------------ */ 578static int fwnet_finish_incoming_packet(struct net_device *net,
699 579 struct sk_buff *skb, u16 source_node_id,
700 580 bool is_broadcast, u16 ether_type)
701static int ipv4_finish_incoming_packet ( struct net_device *netdev, 581{
702 struct sk_buff *skb, u16 source_node_id, bool is_broadcast, u16 ether_type ) { 582 struct fwnet_device *dev;
703 struct ipv4_priv *priv; 583 static const __be64 broadcast_hw = cpu_to_be64(~0ULL);
704 static u64 broadcast_hw = ~0ULL;
705 int status; 584 int status;
706 u64 guid; 585 __be64 guid;
707 586
708 fw_debug ( "ipv4_finish_incoming_packet(%p, %p, %x, %s, %x\n", 587 dev = netdev_priv(net);
709 netdev, skb, source_node_id, is_broadcast ? "true" : "false", ether_type );
710 priv = netdev_priv(netdev);
711 /* Write metadata, and then pass to the receive level */ 588 /* Write metadata, and then pass to the receive level */
712 skb->dev = netdev; 589 skb->dev = net;
713 skb->ip_summed = CHECKSUM_UNNECESSARY; /* don't check it */ 590 skb->ip_summed = CHECKSUM_UNNECESSARY; /* don't check it */
714 591
715 /* 592 /*
@@ -724,73 +601,75 @@ static int ipv4_finish_incoming_packet ( struct net_device *netdev,
724 * about the sending machine. 601 * about the sending machine.
725 */ 602 */
726 if (ether_type == ETH_P_ARP) { 603 if (ether_type == ETH_P_ARP) {
727 struct ipv4_arp *arp1394; 604 struct rfc2734_arp *arp1394;
728 struct arphdr *arp; 605 struct arphdr *arp;
729 unsigned char *arp_ptr; 606 unsigned char *arp_ptr;
730 u64 fifo_addr; 607 u64 fifo_addr;
608 u64 peer_guid;
731 u8 max_rec; 609 u8 max_rec;
732 u8 sspd; 610 u8 sspd;
733 u16 max_payload; 611 u16 max_payload;
734 struct ipv4_node *node; 612 struct fwnet_peer *peer;
735 static const u16 ipv4_speed_to_max_payload[] = { 613 static const u16 fwnet_speed_to_max_payload[] = {
736 /* S100, S200, S400, S800, S1600, S3200 */ 614 /* S100, S200, S400, S800, S1600, S3200 */
737 512, 1024, 2048, 4096, 4096, 4096 615 512, 1024, 2048, 4096, 4096, 4096
738 }; 616 };
739 617
740 /* fw_debug ( "ARP packet\n" ); */ 618 arp1394 = (struct rfc2734_arp *)skb->data;
741 arp1394 = (struct ipv4_arp *)skb->data;
742 arp = (struct arphdr *)skb->data; 619 arp = (struct arphdr *)skb->data;
743 arp_ptr = (unsigned char *)(arp + 1); 620 arp_ptr = (unsigned char *)(arp + 1);
744 fifo_addr = (u64)ntohs(arp1394->fifo_hi) << 32 | 621 fifo_addr = (u64)ntohs(arp1394->fifo_hi) << 32
745 ntohl(arp1394->fifo_lo); 622 | ntohl(arp1394->fifo_lo);
746 max_rec = priv->card->max_receive; 623 max_rec = dev->card->max_receive;
747 if ( arp1394->max_rec < max_rec ) 624 if (arp1394->max_rec < max_rec)
748 max_rec = arp1394->max_rec; 625 max_rec = arp1394->max_rec;
749 sspd = arp1394->sspd; 626 sspd = arp1394->sspd;
750 /* 627 /* Sanity check. OS X 10.3 PPC reportedly sends 131. */
751 * Sanity check. MacOSX seems to be sending us 131 in this 628 if (sspd > SCODE_3200) {
752 * field (atleast on my Panther G5). Not sure why. 629 fw_notify("sspd %x out of range\n", sspd);
753 */
754 if (sspd > 5 ) {
755 fw_notify ( "sspd %x out of range\n", sspd );
756 sspd = 0; 630 sspd = 0;
757 } 631 }
758 632
759 max_payload = min(ipv4_speed_to_max_payload[sspd], 633 max_payload = min(fwnet_speed_to_max_payload[sspd],
760 (u16)(1 << (max_rec + 1))) - IPV4_UNFRAG_HDR_SIZE; 634 (u16)(1 << (max_rec + 1))) - RFC2374_UNFRAG_HDR_SIZE;
761 635
762 guid = be64_to_cpu(get_unaligned(&arp1394->s_uniq_id)); 636 peer_guid = get_unaligned_be64(&arp1394->s_uniq_id);
763 node = ipv4_node_find_by_guid(priv, guid); 637 peer = fwnet_peer_find_by_guid(dev, peer_guid);
764 if (!node) { 638 if (!peer) {
765 fw_notify ( "No node for ARP packet from %llx\n", guid ); 639 fw_notify("No peer for ARP packet from %016llx\n",
640 (unsigned long long)peer_guid);
766 goto failed_proto; 641 goto failed_proto;
767 } 642 }
768 if ( node->nodeid != source_node_id || node->generation != priv->card->generation ) { 643
769 fw_notify ( "Internal error: node->nodeid (%x) != soucre_node_id (%x) or node->generation (%x) != priv->card->generation(%x)\n", 644 /* FIXME don't use card->generation */
770 node->nodeid, source_node_id, node->generation, priv->card->generation ); 645 if (peer->node_id != source_node_id ||
771 node->nodeid = source_node_id; 646 peer->generation != dev->card->generation) {
772 node->generation = priv->card->generation; 647 fw_notify("Internal error: peer->node_id (%x) != "
648 "source_node_id (%x) or peer->generation (%x)"
649 " != dev->card->generation(%x)\n",
650 peer->node_id, source_node_id,
651 peer->generation, dev->card->generation);
652 peer->node_id = source_node_id;
653 peer->generation = dev->card->generation;
773 } 654 }
774 655
775 /* FIXME: for debugging */ 656 /* FIXME: for debugging */
776 if ( sspd > SCODE_400 ) 657 if (sspd > SCODE_400)
777 sspd = SCODE_400; 658 sspd = SCODE_400;
778 /* Update our speed/payload/fifo_offset table */ 659 /* Update our speed/payload/fifo_offset table */
779 /* 660 /*
780 * FIXME: this does not handle cases where two high-speed endpoints must use a slower speed because of 661 * FIXME: this does not handle cases where two high-speed endpoints must use a slower speed because of
781 * a lower speed hub between them. We need to look at the actual topology map here. 662 * a lower speed hub between them. We need to look at the actual topology map here.
782 */ 663 */
783 fw_debug ( "Setting node %p fifo %llx (was %llx), max_payload %x (was %x), speed %x (was %x)\n", 664 peer->fifo = fifo_addr;
784 node, fifo_addr, node->fifo, max_payload, node->max_payload, sspd, node->xmt_speed ); 665 peer->max_payload = max_payload;
785 node->fifo = fifo_addr;
786 node->max_payload = max_payload;
787 /* 666 /*
788 * Only allow speeds to go down from their initial value. 667 * Only allow speeds to go down from their initial value.
789 * Otherwise a local node that can only do S400 or slower may 668 * Otherwise a local peer that can only do S400 or slower may
790 * be told to transmit at S800 to a faster remote node. 669 * be told to transmit at S800 to a faster remote peer.
791 */ 670 */
792 if ( node->xmt_speed > sspd ) 671 if (peer->xmt_speed > sspd)
793 node->xmt_speed = sspd; 672 peer->xmt_speed = sspd;
794 673
795 /* 674 /*
796 * Now that we're done with the 1394 specific stuff, we'll 675 * Now that we're done with the 1394 specific stuff, we'll
@@ -805,248 +684,257 @@ static int ipv4_finish_incoming_packet ( struct net_device *netdev,
805 */ 684 */
806 685
807 arp->ar_hln = 8; 686 arp->ar_hln = 8;
808 arp_ptr += arp->ar_hln; /* skip over sender unique id */ 687 /* skip over sender unique id */
809 *(u32 *)arp_ptr = arp1394->sip; /* move sender IP addr */ 688 arp_ptr += arp->ar_hln;
810 arp_ptr += arp->ar_pln; /* skip over sender IP addr */ 689 /* move sender IP addr */
690 put_unaligned(arp1394->sip, (u32 *)arp_ptr);
691 /* skip over sender IP addr */
692 arp_ptr += arp->ar_pln;
811 693
812 if (arp->ar_op == htons(ARPOP_REQUEST)) 694 if (arp->ar_op == htons(ARPOP_REQUEST))
813 memset(arp_ptr, 0, sizeof(u64)); 695 memset(arp_ptr, 0, sizeof(u64));
814 else 696 else
815 memcpy(arp_ptr, netdev->dev_addr, sizeof(u64)); 697 memcpy(arp_ptr, net->dev_addr, sizeof(u64));
816 } 698 }
817 699
818 /* Now add the ethernet header. */ 700 /* Now add the ethernet header. */
819 guid = cpu_to_be64(priv->card->guid); 701 guid = cpu_to_be64(dev->card->guid);
820 if (dev_hard_header(skb, netdev, ether_type, is_broadcast ? &broadcast_hw : &guid, NULL, 702 if (dev_hard_header(skb, net, ether_type,
821 skb->len) >= 0) { 703 is_broadcast ? &broadcast_hw : &guid,
822 struct ipv4_ether_hdr *eth; 704 NULL, skb->len) >= 0) {
705 struct fwnet_header *eth;
823 u16 *rawp; 706 u16 *rawp;
824 __be16 protocol; 707 __be16 protocol;
825 708
826 skb_reset_mac_header(skb); 709 skb_reset_mac_header(skb);
827 skb_pull(skb, sizeof(*eth)); 710 skb_pull(skb, sizeof(*eth));
828 eth = ipv4_ether_hdr(skb); 711 eth = (struct fwnet_header *)skb_mac_header(skb);
829 if (*eth->h_dest & 1) { 712 if (*eth->h_dest & 1) {
830 if (memcmp(eth->h_dest, netdev->broadcast, netdev->addr_len) == 0) { 713 if (memcmp(eth->h_dest, net->broadcast,
831 fw_debug ( "Broadcast\n" ); 714 net->addr_len) == 0)
832 skb->pkt_type = PACKET_BROADCAST; 715 skb->pkt_type = PACKET_BROADCAST;
833 }
834#if 0 716#if 0
835 else 717 else
836 skb->pkt_type = PACKET_MULTICAST; 718 skb->pkt_type = PACKET_MULTICAST;
837#endif 719#endif
838 } else { 720 } else {
839 if (memcmp(eth->h_dest, netdev->dev_addr, netdev->addr_len)) { 721 if (memcmp(eth->h_dest, net->dev_addr, net->addr_len)) {
840 u64 a1, a2; 722 u64 a1, a2;
841 723
842 memcpy ( &a1, eth->h_dest, sizeof(u64)); 724 memcpy(&a1, eth->h_dest, sizeof(u64));
843 memcpy ( &a2, netdev->dev_addr, sizeof(u64)); 725 memcpy(&a2, net->dev_addr, sizeof(u64));
844 fw_debug ( "Otherhost %llx %llx %x\n", a1, a2, netdev->addr_len );
845 skb->pkt_type = PACKET_OTHERHOST; 726 skb->pkt_type = PACKET_OTHERHOST;
846 } 727 }
847 } 728 }
848 if (ntohs(eth->h_proto) >= 1536) { 729 if (ntohs(eth->h_proto) >= 1536) {
849 fw_debug ( " proto %x %x\n", eth->h_proto, ntohs(eth->h_proto) );
850 protocol = eth->h_proto; 730 protocol = eth->h_proto;
851 } else { 731 } else {
852 rawp = (u16 *)skb->data; 732 rawp = (u16 *)skb->data;
853 if (*rawp == 0xFFFF) { 733 if (*rawp == 0xffff)
854 fw_debug ( "proto 802_3\n" );
855 protocol = htons(ETH_P_802_3); 734 protocol = htons(ETH_P_802_3);
856 } else { 735 else
857 fw_debug ( "proto 802_2\n" );
858 protocol = htons(ETH_P_802_2); 736 protocol = htons(ETH_P_802_2);
859 }
860 } 737 }
861 skb->protocol = protocol; 738 skb->protocol = protocol;
862 } 739 }
863 status = netif_rx(skb); 740 status = netif_rx(skb);
864 if ( status == NET_RX_DROP) { 741 if (status == NET_RX_DROP) {
865 netdev->stats.rx_errors++; 742 net->stats.rx_errors++;
866 netdev->stats.rx_dropped++; 743 net->stats.rx_dropped++;
867 } else { 744 } else {
868 netdev->stats.rx_packets++; 745 net->stats.rx_packets++;
869 netdev->stats.rx_bytes += skb->len; 746 net->stats.rx_bytes += skb->len;
870 } 747 }
871 if (netif_queue_stopped(netdev)) 748 if (netif_queue_stopped(net))
872 netif_wake_queue(netdev); 749 netif_wake_queue(net);
750
873 return 0; 751 return 0;
874 752
875 failed_proto: 753 failed_proto:
876 netdev->stats.rx_errors++; 754 net->stats.rx_errors++;
877 netdev->stats.rx_dropped++; 755 net->stats.rx_dropped++;
756
878 dev_kfree_skb_any(skb); 757 dev_kfree_skb_any(skb);
879 if (netif_queue_stopped(netdev)) 758 if (netif_queue_stopped(net))
880 netif_wake_queue(netdev); 759 netif_wake_queue(net);
881 netdev->last_rx = jiffies; 760
761 net->last_rx = jiffies;
762
882 return 0; 763 return 0;
883} 764}
884 765
885/* ------------------------------------------------------------------ */ 766static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
886 767 u16 source_node_id, bool is_broadcast)
887static int ipv4_incoming_packet ( struct ipv4_priv *priv, u32 *buf, int len, u16 source_node_id, bool is_broadcast ) { 768{
888 struct sk_buff *skb; 769 struct sk_buff *skb;
889 struct net_device *netdev; 770 struct net_device *net;
890 struct ipv4_hdr hdr; 771 struct rfc2734_header hdr;
891 unsigned lf; 772 unsigned lf;
892 unsigned long flags; 773 unsigned long flags;
893 struct ipv4_node *node; 774 struct fwnet_peer *peer;
894 struct ipv4_partial_datagram *pd; 775 struct fwnet_partial_datagram *pd;
895 int fg_off; 776 int fg_off;
896 int dg_size; 777 int dg_size;
897 u16 datagram_label; 778 u16 datagram_label;
898 int retval; 779 int retval;
899 u16 ether_type; 780 u16 ether_type;
900 781
901 fw_debug ( "ipv4_incoming_packet(%p, %p, %d, %x, %s)\n", priv, buf, len, source_node_id, is_broadcast ? "true" : "false" ); 782 net = dev->card->netdev;
902 netdev = priv->card->netdev;
903 783
904 hdr.w0 = ntohl(buf[0]); 784 hdr.w0 = be32_to_cpu(buf[0]);
905 lf = ipv4_get_hdr_lf(&hdr); 785 lf = fwnet_get_hdr_lf(&hdr);
906 if ( lf == IPV4_HDR_UNFRAG ) { 786 if (lf == RFC2374_HDR_UNFRAG) {
907 /* 787 /*
908 * An unfragmented datagram has been received by the ieee1394 788 * An unfragmented datagram has been received by the ieee1394
909 * bus. Build an skbuff around it so we can pass it to the 789 * bus. Build an skbuff around it so we can pass it to the
910 * high level network layer. 790 * high level network layer.
911 */ 791 */
912 ether_type = ipv4_get_hdr_ether_type(&hdr); 792 ether_type = fwnet_get_hdr_ether_type(&hdr);
913 fw_debug ( "header w0 = %x, lf = %x, ether_type = %x\n", hdr.w0, lf, ether_type );
914 buf++; 793 buf++;
915 len -= IPV4_UNFRAG_HDR_SIZE; 794 len -= RFC2374_UNFRAG_HDR_SIZE;
916 795
917 skb = dev_alloc_skb(len + netdev->hard_header_len + 15); 796 skb = dev_alloc_skb(len + net->hard_header_len + 15);
918 if (unlikely(!skb)) { 797 if (unlikely(!skb)) {
919 fw_error ( "Out of memory for incoming packet\n"); 798 fw_error("out of memory\n");
920 netdev->stats.rx_dropped++; 799 net->stats.rx_dropped++;
800
921 return -1; 801 return -1;
922 } 802 }
923 skb_reserve(skb, (netdev->hard_header_len + 15) & ~15); 803 skb_reserve(skb, (net->hard_header_len + 15) & ~15);
924 memcpy(skb_put(skb, len), buf, len ); 804 memcpy(skb_put(skb, len), buf, len);
925 return ipv4_finish_incoming_packet(netdev, skb, source_node_id, is_broadcast, ether_type ); 805
806 return fwnet_finish_incoming_packet(net, skb, source_node_id,
807 is_broadcast, ether_type);
926 } 808 }
927 /* A datagram fragment has been received, now the fun begins. */ 809 /* A datagram fragment has been received, now the fun begins. */
928 hdr.w1 = ntohl(buf[1]); 810 hdr.w1 = ntohl(buf[1]);
929 buf +=2; 811 buf += 2;
930 len -= IPV4_FRAG_HDR_SIZE; 812 len -= RFC2374_FRAG_HDR_SIZE;
931 if ( lf ==IPV4_HDR_FIRSTFRAG ) { 813 if (lf == RFC2374_HDR_FIRSTFRAG) {
932 ether_type = ipv4_get_hdr_ether_type(&hdr); 814 ether_type = fwnet_get_hdr_ether_type(&hdr);
933 fg_off = 0; 815 fg_off = 0;
934 } else { 816 } else {
935 fg_off = ipv4_get_hdr_fg_off(&hdr); 817 ether_type = 0;
936 ether_type = 0; /* Shut up compiler! */ 818 fg_off = fwnet_get_hdr_fg_off(&hdr);
937 } 819 }
938 datagram_label = ipv4_get_hdr_dgl(&hdr); 820 datagram_label = fwnet_get_hdr_dgl(&hdr);
939 dg_size = ipv4_get_hdr_dg_size(&hdr); /* ??? + 1 */ 821 dg_size = fwnet_get_hdr_dg_size(&hdr); /* ??? + 1 */
940 fw_debug ( "fragmented: %x.%x = lf %x, ether_type %x, fg_off %x, dgl %x, dg_size %x\n", hdr.w0, hdr.w1, lf, ether_type, fg_off, datagram_label, dg_size ); 822 peer = fwnet_peer_find_by_node_id(dev, source_node_id);
941 node = ipv4_node_find_by_nodeid ( priv, source_node_id); 823
942 spin_lock_irqsave(&node->pdg_lock, flags); 824 spin_lock_irqsave(&peer->pdg_lock, flags);
943 pd = ipv4_pd_find( node, datagram_label ); 825
826 pd = fwnet_pd_find(peer, datagram_label);
944 if (pd == NULL) { 827 if (pd == NULL) {
945 while ( node->pdg_size >= ipv4_mpd ) { 828 while (peer->pdg_size >= FWNET_MAX_FRAGMENTS) {
946 /* remove the oldest */ 829 /* remove the oldest */
947 ipv4_pd_delete ( list_first_entry(&node->pdg_list, struct ipv4_partial_datagram, pdg_list) ); 830 fwnet_pd_delete(list_first_entry(&peer->pd_list,
948 node->pdg_size--; 831 struct fwnet_partial_datagram, pd_link));
832 peer->pdg_size--;
949 } 833 }
950 pd = ipv4_pd_new ( netdev, node, datagram_label, dg_size, 834 pd = fwnet_pd_new(net, peer, datagram_label,
951 buf, fg_off, len); 835 dg_size, buf, fg_off, len);
952 if ( pd == NULL) { 836 if (pd == NULL) {
953 retval = -ENOMEM; 837 retval = -ENOMEM;
954 goto bad_proto; 838 goto bad_proto;
955 } 839 }
956 node->pdg_size++; 840 peer->pdg_size++;
957 } else { 841 } else {
958 if (ipv4_frag_overlap(pd, fg_off, len) || pd->datagram_size != dg_size) { 842 if (fwnet_frag_overlap(pd, fg_off, len) ||
843 pd->datagram_size != dg_size) {
959 /* 844 /*
960 * Differing datagram sizes or overlapping fragments, 845 * Differing datagram sizes or overlapping fragments,
961 * Either way the remote machine is playing silly buggers 846 * discard old datagram and start a new one.
962 * with us: obliterate the old datagram and start a new one.
963 */ 847 */
964 ipv4_pd_delete ( pd ); 848 fwnet_pd_delete(pd);
965 pd = ipv4_pd_new ( netdev, node, datagram_label, 849 pd = fwnet_pd_new(net, peer, datagram_label,
966 dg_size, buf, fg_off, len); 850 dg_size, buf, fg_off, len);
967 if ( pd == NULL ) { 851 if (pd == NULL) {
968 retval = -ENOMEM; 852 retval = -ENOMEM;
969 node->pdg_size--; 853 peer->pdg_size--;
970 goto bad_proto; 854 goto bad_proto;
971 } 855 }
972 } else { 856 } else {
973 bool worked; 857 if (!fwnet_pd_update(peer, pd, buf, fg_off, len)) {
974
975 worked = ipv4_pd_update ( node, pd,
976 buf, fg_off, len );
977 if ( ! worked ) {
978 /* 858 /*
979 * Couldn't save off fragment anyway 859 * Couldn't save off fragment anyway
980 * so might as well obliterate the 860 * so might as well obliterate the
981 * datagram now. 861 * datagram now.
982 */ 862 */
983 ipv4_pd_delete ( pd ); 863 fwnet_pd_delete(pd);
984 node->pdg_size--; 864 peer->pdg_size--;
985 goto bad_proto; 865 goto bad_proto;
986 } 866 }
987 } 867 }
988 } /* new datagram or add to existing one */ 868 } /* new datagram or add to existing one */
989 869
990 if ( lf == IPV4_HDR_FIRSTFRAG ) 870 if (lf == RFC2374_HDR_FIRSTFRAG)
991 pd->ether_type = ether_type; 871 pd->ether_type = ether_type;
992 if ( ipv4_pd_is_complete ( pd ) ) { 872
873 if (fwnet_pd_is_complete(pd)) {
993 ether_type = pd->ether_type; 874 ether_type = pd->ether_type;
994 node->pdg_size--; 875 peer->pdg_size--;
995 skb = skb_get(pd->skb); 876 skb = skb_get(pd->skb);
996 ipv4_pd_delete ( pd ); 877 fwnet_pd_delete(pd);
997 spin_unlock_irqrestore(&node->pdg_lock, flags); 878
998 return ipv4_finish_incoming_packet ( netdev, skb, source_node_id, false, ether_type ); 879 spin_unlock_irqrestore(&peer->pdg_lock, flags);
880
881 return fwnet_finish_incoming_packet(net, skb, source_node_id,
882 false, ether_type);
999 } 883 }
1000 /* 884 /*
1001 * Datagram is not complete, we're done for the 885 * Datagram is not complete, we're done for the
1002 * moment. 886 * moment.
1003 */ 887 */
1004 spin_unlock_irqrestore(&node->pdg_lock, flags); 888 spin_unlock_irqrestore(&peer->pdg_lock, flags);
889
1005 return 0; 890 return 0;
1006 891
1007 bad_proto: 892 bad_proto:
1008 spin_unlock_irqrestore(&node->pdg_lock, flags); 893 spin_unlock_irqrestore(&peer->pdg_lock, flags);
1009 if (netif_queue_stopped(netdev)) 894
1010 netif_wake_queue(netdev); 895 if (netif_queue_stopped(net))
896 netif_wake_queue(net);
897
1011 return 0; 898 return 0;
1012} 899}
1013 900
1014static void ipv4_receive_packet ( struct fw_card *card, struct fw_request *r, 901static void fwnet_receive_packet(struct fw_card *card, struct fw_request *r,
1015 int tcode, int destination, int source, int generation, int speed, 902 int tcode, int destination, int source, int generation,
1016 unsigned long long offset, void *payload, size_t length, void *callback_data ) { 903 int speed, unsigned long long offset, void *payload,
1017 struct ipv4_priv *priv; 904 size_t length, void *callback_data)
905{
906 struct fwnet_device *dev;
1018 int status; 907 int status;
1019 908
1020 fw_debug ( "ipv4_receive_packet(%p,%p,%x,%x,%x,%x,%x,%llx,%p,%lx,%p)\n", 909 dev = callback_data;
1021 card, r, tcode, destination, source, generation, speed, offset, payload, 910 if (tcode != TCODE_WRITE_BLOCK_REQUEST
1022 (unsigned long)length, callback_data); 911 || destination != card->node_id /* <- FIXME */
1023 print_hex_dump ( KERN_DEBUG, "header: ", DUMP_PREFIX_OFFSET, 32, 1, payload, length, false ); 912 || generation != card->generation /* <- FIXME */
1024 priv = callback_data; 913 || offset != dev->handler.offset) {
1025 if ( tcode != TCODE_WRITE_BLOCK_REQUEST
1026 || destination != card->node_id
1027 || generation != card->generation
1028 || offset != priv->handler.offset ) {
1029 fw_send_response(card, r, RCODE_CONFLICT_ERROR); 914 fw_send_response(card, r, RCODE_CONFLICT_ERROR);
1030 fw_debug("Conflict error card node_id=%x, card generation=%x, local offset %llx\n", 915
1031 card->node_id, card->generation, (unsigned long long)priv->handler.offset );
1032 return; 916 return;
1033 } 917 }
1034 status = ipv4_incoming_packet ( priv, payload, length, source, false ); 918
1035 if ( status != 0 ) { 919 status = fwnet_incoming_packet(dev, payload, length, source, false);
1036 fw_error ( "Incoming packet failure\n" ); 920 if (status != 0) {
1037 fw_send_response ( card, r, RCODE_CONFLICT_ERROR ); 921 fw_error("Incoming packet failure\n");
922 fw_send_response(card, r, RCODE_CONFLICT_ERROR);
923
1038 return; 924 return;
1039 } 925 }
1040 fw_send_response ( card, r, RCODE_COMPLETE ); 926
927 fw_send_response(card, r, RCODE_COMPLETE);
1041} 928}
1042 929
1043static void ipv4_receive_broadcast(struct fw_iso_context *context, u32 cycle, 930static void fwnet_receive_broadcast(struct fw_iso_context *context,
1044 size_t header_length, void *header, void *data) { 931 u32 cycle, size_t header_length, void *header, void *data)
1045 struct ipv4_priv *priv; 932{
933 struct fwnet_device *dev;
1046 struct fw_iso_packet packet; 934 struct fw_iso_packet packet;
1047 struct fw_card *card; 935 struct fw_card *card;
1048 u16 *hdr_ptr; 936 __be16 *hdr_ptr;
1049 u32 *buf_ptr; 937 __be32 *buf_ptr;
1050 int retval; 938 int retval;
1051 u32 length; 939 u32 length;
1052 u16 source_node_id; 940 u16 source_node_id;
@@ -1055,70 +943,68 @@ static void ipv4_receive_broadcast(struct fw_iso_context *context, u32 cycle,
1055 unsigned long offset; 943 unsigned long offset;
1056 unsigned long flags; 944 unsigned long flags;
1057 945
1058 fw_debug ( "ipv4_receive_broadcast ( context=%p, cycle=%x, header_length=%lx, header=%p, data=%p )\n", context, cycle, (unsigned long)header_length, header, data ); 946 dev = data;
1059 print_hex_dump ( KERN_DEBUG, "header: ", DUMP_PREFIX_OFFSET, 32, 1, header, header_length, false ); 947 card = dev->card;
1060 priv = data;
1061 card = priv->card;
1062 hdr_ptr = header; 948 hdr_ptr = header;
1063 length = ntohs(hdr_ptr[0]); 949 length = be16_to_cpup(hdr_ptr);
1064 spin_lock_irqsave(&priv->lock,flags); 950
1065 offset = priv->rcv_buffer_size * priv->broadcast_rcv_next_ptr; 951 spin_lock_irqsave(&dev->lock, flags);
1066 buf_ptr = priv->broadcast_rcv_buffer_ptrs[priv->broadcast_rcv_next_ptr++]; 952
1067 if ( priv->broadcast_rcv_next_ptr == priv->num_broadcast_rcv_ptrs ) 953 offset = dev->rcv_buffer_size * dev->broadcast_rcv_next_ptr;
1068 priv->broadcast_rcv_next_ptr = 0; 954 buf_ptr = dev->broadcast_rcv_buffer_ptrs[dev->broadcast_rcv_next_ptr++];
1069 spin_unlock_irqrestore(&priv->lock,flags); 955 if (dev->broadcast_rcv_next_ptr == dev->num_broadcast_rcv_ptrs)
1070 fw_debug ( "length %u at %p\n", length, buf_ptr ); 956 dev->broadcast_rcv_next_ptr = 0;
1071 print_hex_dump ( KERN_DEBUG, "buffer: ", DUMP_PREFIX_OFFSET, 32, 1, buf_ptr, length, false ); 957
958 spin_unlock_irqrestore(&dev->lock, flags);
1072 959
1073 specifier_id = (be32_to_cpu(buf_ptr[0]) & 0xffff) << 8 960 specifier_id = (be32_to_cpu(buf_ptr[0]) & 0xffff) << 8
1074 | (be32_to_cpu(buf_ptr[1]) & 0xff000000) >> 24; 961 | (be32_to_cpu(buf_ptr[1]) & 0xff000000) >> 24;
1075 ver = be32_to_cpu(buf_ptr[1]) & 0xFFFFFF; 962 ver = be32_to_cpu(buf_ptr[1]) & 0xffffff;
1076 source_node_id = be32_to_cpu(buf_ptr[0]) >> 16; 963 source_node_id = be32_to_cpu(buf_ptr[0]) >> 16;
1077 /* fw_debug ( "source %x SpecID %x ver %x\n", source_node_id, specifier_id, ver ); */ 964
1078 if ( specifier_id == IPV4_GASP_SPECIFIER_ID && ver == IPV4_GASP_VERSION ) { 965 if (specifier_id == IANA_SPECIFIER_ID && ver == RFC2734_SW_VERSION) {
1079 buf_ptr += 2; 966 buf_ptr += 2;
1080 length -= IPV4_GASP_OVERHEAD; 967 length -= IEEE1394_GASP_HDR_SIZE;
1081 ipv4_incoming_packet(priv, buf_ptr, length, source_node_id, true); 968 fwnet_incoming_packet(dev, buf_ptr, length,
1082 } else 969 source_node_id, true);
1083 fw_debug ( "Ignoring packet: not GASP\n" ); 970 }
1084 packet.payload_length = priv->rcv_buffer_size; 971
972 packet.payload_length = dev->rcv_buffer_size;
1085 packet.interrupt = 1; 973 packet.interrupt = 1;
1086 packet.skip = 0; 974 packet.skip = 0;
1087 packet.tag = 3; 975 packet.tag = 3;
1088 packet.sy = 0; 976 packet.sy = 0;
1089 packet.header_length = IPV4_GASP_OVERHEAD; 977 packet.header_length = IEEE1394_GASP_HDR_SIZE;
1090 spin_lock_irqsave(&priv->lock,flags); 978
1091 retval = fw_iso_context_queue ( priv->broadcast_rcv_context, &packet, 979 spin_lock_irqsave(&dev->lock, flags);
1092 &priv->broadcast_rcv_buffer, offset );
1093 spin_unlock_irqrestore(&priv->lock,flags);
1094 if ( retval < 0 )
1095 fw_error ( "requeue failed\n" );
1096}
1097 980
1098static void debug_ptask ( struct ipv4_packet_task *ptask ) { 981 retval = fw_iso_context_queue(dev->broadcast_rcv_context, &packet,
1099 static const char *tx_types[] = { "Unknown", "GASP", "Write" }; 982 &dev->broadcast_rcv_buffer, offset);
1100 983
1101 fw_debug ( "packet %p { hdr { w0 %x w1 %x }, skb %p, priv %p," 984 spin_unlock_irqrestore(&dev->lock, flags);
1102 " tx_type %s, outstanding_pkts %d, max_payload %x, fifo %llx," 985
1103 " speed %x, dest_node %x, generation %x }\n", 986 if (retval < 0)
1104 ptask, ptask->hdr.w0, ptask->hdr.w1, ptask->skb, ptask->priv, 987 fw_error("requeue failed\n");
1105 ptask->tx_type > IPV4_WRREQ ? "Invalid" : tx_types[ptask->tx_type],
1106 ptask->outstanding_pkts, ptask->max_payload,
1107 ptask->fifo_addr, ptask->speed, ptask->dest_node, ptask->generation );
1108 print_hex_dump ( KERN_DEBUG, "packet :", DUMP_PREFIX_OFFSET, 32, 1,
1109 ptask->skb->data, ptask->skb->len, false );
1110} 988}
1111 989
1112static void ipv4_transmit_packet_done ( struct ipv4_packet_task *ptask ) { 990static struct kmem_cache *fwnet_packet_task_cache;
1113 struct ipv4_priv *priv; 991
992static int fwnet_send_packet(struct fwnet_packet_task *ptask);
993
994static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
995{
996 struct fwnet_device *dev;
1114 unsigned long flags; 997 unsigned long flags;
1115 998
1116 priv = ptask->priv; 999 dev = ptask->dev;
1117 spin_lock_irqsave ( &priv->lock, flags ); 1000
1118 list_del ( &ptask->packet_list ); 1001 spin_lock_irqsave(&dev->lock, flags);
1119 spin_unlock_irqrestore ( &priv->lock, flags ); 1002 list_del(&ptask->pt_link);
1120 ptask->outstanding_pkts--; 1003 spin_unlock_irqrestore(&dev->lock, flags);
1121 if ( ptask->outstanding_pkts > 0 ) { 1004
1005 ptask->outstanding_pkts--; /* FIXME access inside lock */
1006
1007 if (ptask->outstanding_pkts > 0) {
1122 u16 dg_size; 1008 u16 dg_size;
1123 u16 fg_off; 1009 u16 fg_off;
1124 u16 datagram_label; 1010 u16 datagram_label;
@@ -1126,133 +1012,139 @@ static void ipv4_transmit_packet_done ( struct ipv4_packet_task *ptask ) {
1126 struct sk_buff *skb; 1012 struct sk_buff *skb;
1127 1013
1128 /* Update the ptask to point to the next fragment and send it */ 1014 /* Update the ptask to point to the next fragment and send it */
1129 lf = ipv4_get_hdr_lf(&ptask->hdr); 1015 lf = fwnet_get_hdr_lf(&ptask->hdr);
1130 switch (lf) { 1016 switch (lf) {
1131 case IPV4_HDR_LASTFRAG: 1017 case RFC2374_HDR_LASTFRAG:
1132 case IPV4_HDR_UNFRAG: 1018 case RFC2374_HDR_UNFRAG:
1133 default: 1019 default:
1134 fw_error ( "Outstanding packet %x lf %x, header %x,%x\n", ptask->outstanding_pkts, lf, ptask->hdr.w0, ptask->hdr.w1 ); 1020 fw_error("Outstanding packet %x lf %x, header %x,%x\n",
1021 ptask->outstanding_pkts, lf, ptask->hdr.w0,
1022 ptask->hdr.w1);
1135 BUG(); 1023 BUG();
1136 1024
1137 case IPV4_HDR_FIRSTFRAG: 1025 case RFC2374_HDR_FIRSTFRAG:
1138 /* Set frag type here for future interior fragments */ 1026 /* Set frag type here for future interior fragments */
1139 dg_size = ipv4_get_hdr_dg_size(&ptask->hdr); 1027 dg_size = fwnet_get_hdr_dg_size(&ptask->hdr);
1140 fg_off = ptask->max_payload - IPV4_FRAG_HDR_SIZE; 1028 fg_off = ptask->max_payload - RFC2374_FRAG_HDR_SIZE;
1141 datagram_label = ipv4_get_hdr_dgl(&ptask->hdr); 1029 datagram_label = fwnet_get_hdr_dgl(&ptask->hdr);
1142 break; 1030 break;
1143 1031
1144 case IPV4_HDR_INTFRAG: 1032 case RFC2374_HDR_INTFRAG:
1145 dg_size = ipv4_get_hdr_dg_size(&ptask->hdr); 1033 dg_size = fwnet_get_hdr_dg_size(&ptask->hdr);
1146 fg_off = ipv4_get_hdr_fg_off(&ptask->hdr) + ptask->max_payload - IPV4_FRAG_HDR_SIZE; 1034 fg_off = fwnet_get_hdr_fg_off(&ptask->hdr)
1147 datagram_label = ipv4_get_hdr_dgl(&ptask->hdr); 1035 + ptask->max_payload - RFC2374_FRAG_HDR_SIZE;
1036 datagram_label = fwnet_get_hdr_dgl(&ptask->hdr);
1148 break; 1037 break;
1149 } 1038 }
1150 skb = ptask->skb; 1039 skb = ptask->skb;
1151 skb_pull ( skb, ptask->max_payload ); 1040 skb_pull(skb, ptask->max_payload);
1152 if ( ptask->outstanding_pkts > 1 ) { 1041 if (ptask->outstanding_pkts > 1) {
1153 ipv4_make_sf_hdr ( &ptask->hdr, 1042 fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_INTFRAG,
1154 IPV4_HDR_INTFRAG, dg_size, fg_off, datagram_label ); 1043 dg_size, fg_off, datagram_label);
1155 } else { 1044 } else {
1156 ipv4_make_sf_hdr ( &ptask->hdr, 1045 fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_LASTFRAG,
1157 IPV4_HDR_LASTFRAG, dg_size, fg_off, datagram_label ); 1046 dg_size, fg_off, datagram_label);
1158 ptask->max_payload = skb->len + IPV4_FRAG_HDR_SIZE; 1047 ptask->max_payload = skb->len + RFC2374_FRAG_HDR_SIZE;
1159
1160 } 1048 }
1161 ipv4_send_packet ( ptask ); 1049 fwnet_send_packet(ptask);
1162 } else { 1050 } else {
1163 dev_kfree_skb_any ( ptask->skb ); 1051 dev_kfree_skb_any(ptask->skb);
1164 kmem_cache_free( ipv4_packet_task_cache, ptask ); 1052 kmem_cache_free(fwnet_packet_task_cache, ptask);
1165 } 1053 }
1166} 1054}
1167 1055
1168static void ipv4_write_complete ( struct fw_card *card, int rcode, 1056static void fwnet_write_complete(struct fw_card *card, int rcode,
1169 void *payload, size_t length, void *data ) { 1057 void *payload, size_t length, void *data)
1170 struct ipv4_packet_task *ptask; 1058{
1059 struct fwnet_packet_task *ptask;
1171 1060
1172 ptask = data; 1061 ptask = data;
1173 fw_debug ( "ipv4_write_complete ( %p, %x, %p, %lx, %p )\n",
1174 card, rcode, payload, (unsigned long)length, data );
1175 debug_ptask ( ptask );
1176 1062
1177 if ( rcode == RCODE_COMPLETE ) { 1063 if (rcode == RCODE_COMPLETE)
1178 ipv4_transmit_packet_done ( ptask ); 1064 fwnet_transmit_packet_done(ptask);
1179 } else { 1065 else
1180 fw_error ( "ipv4_write_complete: failed: %x\n", rcode ); 1066 fw_error("fwnet_write_complete: failed: %x\n", rcode);
1181 /* ??? error recovery */ 1067 /* ??? error recovery */
1182 }
1183} 1068}
1184 1069
1185static int ipv4_send_packet ( struct ipv4_packet_task *ptask ) { 1070static int fwnet_send_packet(struct fwnet_packet_task *ptask)
1186 struct ipv4_priv *priv; 1071{
1072 struct fwnet_device *dev;
1187 unsigned tx_len; 1073 unsigned tx_len;
1188 struct ipv4_hdr *bufhdr; 1074 struct rfc2734_header *bufhdr;
1189 unsigned long flags; 1075 unsigned long flags;
1190 struct net_device *netdev; 1076 struct net_device *net;
1191#if 0 /* stefanr */
1192 int retval;
1193#endif
1194 1077
1195 fw_debug ( "ipv4_send_packet\n" ); 1078 dev = ptask->dev;
1196 debug_ptask ( ptask );
1197 priv = ptask->priv;
1198 tx_len = ptask->max_payload; 1079 tx_len = ptask->max_payload;
1199 switch (ipv4_get_hdr_lf(&ptask->hdr)) { 1080 switch (fwnet_get_hdr_lf(&ptask->hdr)) {
1200 case IPV4_HDR_UNFRAG: 1081 case RFC2374_HDR_UNFRAG:
1201 bufhdr = (struct ipv4_hdr *)skb_push(ptask->skb, IPV4_UNFRAG_HDR_SIZE); 1082 bufhdr = (struct rfc2734_header *)
1202 bufhdr->w0 = htonl(ptask->hdr.w0); 1083 skb_push(ptask->skb, RFC2374_UNFRAG_HDR_SIZE);
1084 put_unaligned_be32(ptask->hdr.w0, &bufhdr->w0);
1203 break; 1085 break;
1204 1086
1205 case IPV4_HDR_FIRSTFRAG: 1087 case RFC2374_HDR_FIRSTFRAG:
1206 case IPV4_HDR_INTFRAG: 1088 case RFC2374_HDR_INTFRAG:
1207 case IPV4_HDR_LASTFRAG: 1089 case RFC2374_HDR_LASTFRAG:
1208 bufhdr = (struct ipv4_hdr *)skb_push(ptask->skb, IPV4_FRAG_HDR_SIZE); 1090 bufhdr = (struct rfc2734_header *)
1209 bufhdr->w0 = htonl(ptask->hdr.w0); 1091 skb_push(ptask->skb, RFC2374_FRAG_HDR_SIZE);
1210 bufhdr->w1 = htonl(ptask->hdr.w1); 1092 put_unaligned_be32(ptask->hdr.w0, &bufhdr->w0);
1093 put_unaligned_be32(ptask->hdr.w1, &bufhdr->w1);
1211 break; 1094 break;
1212 1095
1213 default: 1096 default:
1214 BUG(); 1097 BUG();
1215 } 1098 }
1216 if ( ptask->tx_type == IPV4_GASP ) { 1099 if (ptask->dest_node == IEEE1394_ALL_NODES) {
1217 u32 *packets; 1100 u8 *p;
1218 int generation; 1101 int generation;
1219 int nodeid; 1102 int node_id;
1220 1103
1221 /* ptask->generation may not have been set yet */ 1104 /* ptask->generation may not have been set yet */
1222 generation = priv->card->generation; 1105 generation = dev->card->generation;
1223 smp_rmb(); 1106 smp_rmb();
1224 nodeid = priv->card->node_id; 1107 node_id = dev->card->node_id;
1225 packets = (u32 *)skb_push(ptask->skb, sizeof(u32)*2); 1108
1226 packets[0] = htonl(nodeid << 16 | (IPV4_GASP_SPECIFIER_ID>>8)); 1109 p = skb_push(ptask->skb, 8);
1227 packets[1] = htonl((IPV4_GASP_SPECIFIER_ID & 0xFF) << 24 | IPV4_GASP_VERSION); 1110 put_unaligned_be32(node_id << 16 | IANA_SPECIFIER_ID >> 8, p);
1228 fw_send_request ( priv->card, &ptask->transaction, TCODE_STREAM_DATA, 1111 put_unaligned_be32((IANA_SPECIFIER_ID & 0xff) << 24
1229 fw_stream_packet_destination_id(3, BROADCAST_CHANNEL, 0), 1112 | RFC2734_SW_VERSION, &p[4]);
1230 generation, SCODE_100, 0ULL, ptask->skb->data, tx_len + 8, ipv4_write_complete, ptask ); 1113
1231 spin_lock_irqsave(&priv->lock,flags); 1114 /* We should not transmit if broadcast_channel.valid == 0. */
1232 list_add_tail ( &ptask->packet_list, &priv->broadcasted_list ); 1115 fw_send_request(dev->card, &ptask->transaction,
1233 spin_unlock_irqrestore(&priv->lock,flags); 1116 TCODE_STREAM_DATA,
1234#if 0 /* stefanr */ 1117 fw_stream_packet_destination_id(3,
1235 return retval; 1118 IEEE1394_BROADCAST_CHANNEL, 0),
1236#else 1119 generation, SCODE_100, 0ULL, ptask->skb->data,
1120 tx_len + 8, fwnet_write_complete, ptask);
1121
1122 /* FIXME race? */
1123 spin_lock_irqsave(&dev->lock, flags);
1124 list_add_tail(&ptask->pt_link, &dev->broadcasted_list);
1125 spin_unlock_irqrestore(&dev->lock, flags);
1126
1237 return 0; 1127 return 0;
1238#endif
1239 } 1128 }
1240 fw_debug("send_request (%p, %p, WRITE_BLOCK, %x, %x, %x, %llx, %p, %d, %p, %p\n", 1129
1241 priv->card, &ptask->transaction, ptask->dest_node, ptask->generation, 1130 fw_send_request(dev->card, &ptask->transaction,
1242 ptask->speed, (unsigned long long)ptask->fifo_addr, ptask->skb->data, tx_len, 1131 TCODE_WRITE_BLOCK_REQUEST, ptask->dest_node,
1243 ipv4_write_complete, ptask ); 1132 ptask->generation, ptask->speed, ptask->fifo_addr,
1244 fw_send_request ( priv->card, &ptask->transaction, 1133 ptask->skb->data, tx_len, fwnet_write_complete, ptask);
1245 TCODE_WRITE_BLOCK_REQUEST, ptask->dest_node, ptask->generation, ptask->speed, 1134
1246 ptask->fifo_addr, ptask->skb->data, tx_len, ipv4_write_complete, ptask ); 1135 /* FIXME race? */
1247 spin_lock_irqsave(&priv->lock,flags); 1136 spin_lock_irqsave(&dev->lock, flags);
1248 list_add_tail ( &ptask->packet_list, &priv->sent_list ); 1137 list_add_tail(&ptask->pt_link, &dev->sent_list);
1249 spin_unlock_irqrestore(&priv->lock,flags); 1138 spin_unlock_irqrestore(&dev->lock, flags);
1250 netdev = priv->card->netdev; 1139
1251 netdev->trans_start = jiffies; 1140 net = dev->card->netdev;
1141 net->trans_start = jiffies;
1142
1252 return 0; 1143 return 0;
1253} 1144}
1254 1145
1255static int ipv4_broadcast_start ( struct ipv4_priv *priv ) { 1146static int fwnet_broadcast_start(struct fwnet_device *dev)
1147{
1256 struct fw_iso_context *context; 1148 struct fw_iso_context *context;
1257 int retval; 1149 int retval;
1258 unsigned num_packets; 1150 unsigned num_packets;
@@ -1260,150 +1152,151 @@ static int ipv4_broadcast_start ( struct ipv4_priv *priv ) {
1260 struct fw_iso_packet packet; 1152 struct fw_iso_packet packet;
1261 unsigned long offset; 1153 unsigned long offset;
1262 unsigned u; 1154 unsigned u;
1263 /* unsigned transmit_speed; */
1264 1155
1265#if 0 /* stefanr */ 1156 if (dev->local_fifo == FWNET_NO_FIFO_ADDR) {
1266 if ( priv->card->broadcast_channel != (BROADCAST_CHANNEL_VALID|BROADCAST_CHANNEL_INITIAL)) { 1157 /* outside OHCI posted write area? */
1267 fw_notify ( "Invalid broadcast channel %x\n", priv->card->broadcast_channel ); 1158 static const struct fw_address_region region = {
1268 /* FIXME: try again later? */ 1159 .start = 0xffff00000000ULL,
1269 /* return -EINVAL; */ 1160 .end = CSR_REGISTER_BASE,
1270 } 1161 };
1271#endif 1162
1272 if ( priv->local_fifo == INVALID_FIFO_ADDR ) { 1163 dev->handler.length = 4096;
1273 struct fw_address_region region; 1164 dev->handler.address_callback = fwnet_receive_packet;
1274 1165 dev->handler.callback_data = dev;
1275 priv->handler.length = FIFO_SIZE; 1166
1276 priv->handler.address_callback = ipv4_receive_packet; 1167 retval = fw_core_add_address_handler(&dev->handler, &region);
1277 priv->handler.callback_data = priv; 1168 if (retval < 0)
1278 /* FIXME: this is OHCI, but what about others? */
1279 region.start = 0xffff00000000ULL;
1280 region.end = 0xfffffffffffcULL;
1281
1282 retval = fw_core_add_address_handler ( &priv->handler, &region );
1283 if ( retval < 0 )
1284 goto failed_initial; 1169 goto failed_initial;
1285 priv->local_fifo = priv->handler.offset; 1170
1171 dev->local_fifo = dev->handler.offset;
1286 } 1172 }
1287 1173
1288 /* 1174 max_receive = 1U << (dev->card->max_receive + 1);
1289 * FIXME: rawiso limits us to PAGE_SIZE. This only matters if we ever have 1175 num_packets = (FWNET_ISO_PAGE_COUNT * PAGE_SIZE) / max_receive;
1290 * a machine with PAGE_SIZE < 4096 1176
1291 */ 1177 if (!dev->broadcast_rcv_context) {
1292 max_receive = 1U << (priv->card->max_receive + 1);
1293 num_packets = ( ipv4_iso_page_count * PAGE_SIZE ) / max_receive;
1294 if ( ! priv->broadcast_rcv_context ) {
1295 void **ptrptr; 1178 void **ptrptr;
1296 1179
1297 context = fw_iso_context_create ( priv->card, 1180 context = fw_iso_context_create(dev->card,
1298 FW_ISO_CONTEXT_RECEIVE, BROADCAST_CHANNEL, 1181 FW_ISO_CONTEXT_RECEIVE, IEEE1394_BROADCAST_CHANNEL,
1299 priv->card->link_speed, 8, ipv4_receive_broadcast, priv ); 1182 dev->card->link_speed, 8, fwnet_receive_broadcast, dev);
1300 if (IS_ERR(context)) { 1183 if (IS_ERR(context)) {
1301 retval = PTR_ERR(context); 1184 retval = PTR_ERR(context);
1302 goto failed_context_create; 1185 goto failed_context_create;
1303 } 1186 }
1304 retval = fw_iso_buffer_init ( &priv->broadcast_rcv_buffer, 1187
1305 priv->card, ipv4_iso_page_count, DMA_FROM_DEVICE ); 1188 retval = fw_iso_buffer_init(&dev->broadcast_rcv_buffer,
1306 if ( retval < 0 ) 1189 dev->card, FWNET_ISO_PAGE_COUNT, DMA_FROM_DEVICE);
1190 if (retval < 0)
1307 goto failed_buffer_init; 1191 goto failed_buffer_init;
1308 ptrptr = kmalloc ( sizeof(void*)*num_packets, GFP_KERNEL ); 1192
1309 if ( ! ptrptr ) { 1193 ptrptr = kmalloc(sizeof(void *) * num_packets, GFP_KERNEL);
1194 if (!ptrptr) {
1310 retval = -ENOMEM; 1195 retval = -ENOMEM;
1311 goto failed_ptrs_alloc; 1196 goto failed_ptrs_alloc;
1312 } 1197 }
1313 priv->broadcast_rcv_buffer_ptrs = ptrptr; 1198
1314 for ( u = 0; u < ipv4_iso_page_count; u++ ) { 1199 dev->broadcast_rcv_buffer_ptrs = ptrptr;
1200 for (u = 0; u < FWNET_ISO_PAGE_COUNT; u++) {
1315 void *ptr; 1201 void *ptr;
1316 unsigned v; 1202 unsigned v;
1317 1203
1318 ptr = kmap ( priv->broadcast_rcv_buffer.pages[u] ); 1204 ptr = kmap(dev->broadcast_rcv_buffer.pages[u]);
1319 for ( v = 0; v < num_packets / ipv4_iso_page_count; v++ ) 1205 for (v = 0; v < num_packets / FWNET_ISO_PAGE_COUNT; v++)
1320 *ptrptr++ = (void *)((char *)ptr + v * max_receive); 1206 *ptrptr++ = (void *)
1207 ((char *)ptr + v * max_receive);
1321 } 1208 }
1322 priv->broadcast_rcv_context = context; 1209 dev->broadcast_rcv_context = context;
1323 } else 1210 } else {
1324 context = priv->broadcast_rcv_context; 1211 context = dev->broadcast_rcv_context;
1212 }
1325 1213
1326 packet.payload_length = max_receive; 1214 packet.payload_length = max_receive;
1327 packet.interrupt = 1; 1215 packet.interrupt = 1;
1328 packet.skip = 0; 1216 packet.skip = 0;
1329 packet.tag = 3; 1217 packet.tag = 3;
1330 packet.sy = 0; 1218 packet.sy = 0;
1331 packet.header_length = IPV4_GASP_OVERHEAD; 1219 packet.header_length = IEEE1394_GASP_HDR_SIZE;
1332 offset = 0; 1220 offset = 0;
1333 for ( u = 0; u < num_packets; u++ ) { 1221
1334 retval = fw_iso_context_queue ( context, &packet, 1222 for (u = 0; u < num_packets; u++) {
1335 &priv->broadcast_rcv_buffer, offset ); 1223 retval = fw_iso_context_queue(context, &packet,
1336 if ( retval < 0 ) 1224 &dev->broadcast_rcv_buffer, offset);
1225 if (retval < 0)
1337 goto failed_rcv_queue; 1226 goto failed_rcv_queue;
1227
1338 offset += max_receive; 1228 offset += max_receive;
1339 } 1229 }
1340 priv->num_broadcast_rcv_ptrs = num_packets; 1230 dev->num_broadcast_rcv_ptrs = num_packets;
1341 priv->rcv_buffer_size = max_receive; 1231 dev->rcv_buffer_size = max_receive;
1342 priv->broadcast_rcv_next_ptr = 0U; 1232 dev->broadcast_rcv_next_ptr = 0U;
1343 retval = fw_iso_context_start ( context, -1, 0, FW_ISO_CONTEXT_MATCH_ALL_TAGS ); /* ??? sync */ 1233 retval = fw_iso_context_start(context, -1, 0,
1344 if ( retval < 0 ) 1234 FW_ISO_CONTEXT_MATCH_ALL_TAGS); /* ??? sync */
1235 if (retval < 0)
1345 goto failed_rcv_queue; 1236 goto failed_rcv_queue;
1346 /* FIXME: adjust this when we know the max receive speeds of all other IP nodes on the bus. */ 1237
1347 /* since we only xmt at S100 ??? */ 1238 /* FIXME: adjust it according to the min. speed of all known peers? */
1348 priv->broadcast_xmt_max_payload = S100_BUFFER_SIZE - IPV4_GASP_OVERHEAD - IPV4_UNFRAG_HDR_SIZE; 1239 dev->broadcast_xmt_max_payload = IEEE1394_MAX_PAYLOAD_S100
1349 priv->broadcast_state = IPV4_BROADCAST_RUNNING; 1240 - IEEE1394_GASP_HDR_SIZE - RFC2374_UNFRAG_HDR_SIZE;
1241 dev->broadcast_state = FWNET_BROADCAST_RUNNING;
1242
1350 return 0; 1243 return 0;
1351 1244
1352 failed_rcv_queue: 1245 failed_rcv_queue:
1353 kfree ( priv->broadcast_rcv_buffer_ptrs ); 1246 kfree(dev->broadcast_rcv_buffer_ptrs);
1354 priv->broadcast_rcv_buffer_ptrs = NULL; 1247 dev->broadcast_rcv_buffer_ptrs = NULL;
1355 failed_ptrs_alloc: 1248 failed_ptrs_alloc:
1356 fw_iso_buffer_destroy ( &priv->broadcast_rcv_buffer, priv->card ); 1249 fw_iso_buffer_destroy(&dev->broadcast_rcv_buffer, dev->card);
1357 failed_buffer_init: 1250 failed_buffer_init:
1358 fw_iso_context_destroy ( context ); 1251 fw_iso_context_destroy(context);
1359 priv->broadcast_rcv_context = NULL; 1252 dev->broadcast_rcv_context = NULL;
1360 failed_context_create: 1253 failed_context_create:
1361 fw_core_remove_address_handler ( &priv->handler ); 1254 fw_core_remove_address_handler(&dev->handler);
1362 failed_initial: 1255 failed_initial:
1363 priv->local_fifo = INVALID_FIFO_ADDR; 1256 dev->local_fifo = FWNET_NO_FIFO_ADDR;
1257
1364 return retval; 1258 return retval;
1365} 1259}
1366 1260
1367/* This is called after an "ifup" */ 1261/* ifup */
1368static int ipv4_open(struct net_device *dev) { 1262static int fwnet_open(struct net_device *net)
1369 struct ipv4_priv *priv; 1263{
1264 struct fwnet_device *dev = netdev_priv(net);
1370 int ret; 1265 int ret;
1371 1266
1372 priv = netdev_priv(dev); 1267 if (dev->broadcast_state == FWNET_BROADCAST_ERROR) {
1373 if (priv->broadcast_state == IPV4_BROADCAST_ERROR) { 1268 ret = fwnet_broadcast_start(dev);
1374 ret = ipv4_broadcast_start ( priv );
1375 if (ret) 1269 if (ret)
1376 return ret; 1270 return ret;
1377 } 1271 }
1378 netif_start_queue(dev); 1272 netif_start_queue(net);
1273
1379 return 0; 1274 return 0;
1380} 1275}
1381 1276
1382/* This is called after an "ifdown" */ 1277/* ifdown */
1383static int ipv4_stop(struct net_device *netdev) 1278static int fwnet_stop(struct net_device *net)
1384{ 1279{
1385 /* flush priv->wake */ 1280 netif_stop_queue(net);
1386 /* flush_scheduled_work(); */ 1281
1282 /* Deallocate iso context for use by other applications? */
1387 1283
1388 netif_stop_queue(netdev);
1389 return 0; 1284 return 0;
1390} 1285}
1391 1286
1392/* Transmit a packet (called by kernel) */ 1287static int fwnet_tx(struct sk_buff *skb, struct net_device *net)
1393static int ipv4_tx(struct sk_buff *skb, struct net_device *netdev)
1394{ 1288{
1395 struct ipv4_ether_hdr hdr_buf; 1289 struct fwnet_header hdr_buf;
1396 struct ipv4_priv *priv = netdev_priv(netdev); 1290 struct fwnet_device *dev = netdev_priv(net);
1397 __be16 proto; 1291 __be16 proto;
1398 u16 dest_node; 1292 u16 dest_node;
1399 enum ipv4_tx_type tx_type;
1400 unsigned max_payload; 1293 unsigned max_payload;
1401 u16 dg_size; 1294 u16 dg_size;
1402 u16 *datagram_label_ptr; 1295 u16 *datagram_label_ptr;
1403 struct ipv4_packet_task *ptask; 1296 struct fwnet_packet_task *ptask;
1404 struct ipv4_node *node = NULL; 1297 struct fwnet_peer *peer = NULL;
1405 1298
1406 ptask = kmem_cache_alloc(ipv4_packet_task_cache, GFP_ATOMIC); 1299 ptask = kmem_cache_alloc(fwnet_packet_task_cache, GFP_ATOMIC);
1407 if (ptask == NULL) 1300 if (ptask == NULL)
1408 goto fail; 1301 goto fail;
1409 1302
@@ -1412,7 +1305,7 @@ static int ipv4_tx(struct sk_buff *skb, struct net_device *netdev)
1412 goto fail; 1305 goto fail;
1413 1306
1414 /* 1307 /*
1415 * Get rid of the fake ipv4 header, but first make a copy. 1308 * Make a copy of the driver-specific header.
1416 * We might need to rebuild the header on tx failure. 1309 * We might need to rebuild the header on tx failure.
1417 */ 1310 */
1418 memcpy(&hdr_buf, skb->data, sizeof(hdr_buf)); 1311 memcpy(&hdr_buf, skb->data, sizeof(hdr_buf));
@@ -1425,110 +1318,95 @@ static int ipv4_tx(struct sk_buff *skb, struct net_device *netdev)
1425 * Set the transmission type for the packet. ARP packets and IP 1318 * Set the transmission type for the packet. ARP packets and IP
1426 * broadcast packets are sent via GASP. 1319 * broadcast packets are sent via GASP.
1427 */ 1320 */
1428 if ( memcmp(hdr_buf.h_dest, netdev->broadcast, IPV4_ALEN) == 0 1321 if (memcmp(hdr_buf.h_dest, net->broadcast, FWNET_ALEN) == 0
1429 || proto == htons(ETH_P_ARP) 1322 || proto == htons(ETH_P_ARP)
1430 || ( proto == htons(ETH_P_IP) 1323 || (proto == htons(ETH_P_IP)
1431 && IN_MULTICAST(ntohl(ip_hdr(skb)->daddr)) ) ) { 1324 && IN_MULTICAST(ntohl(ip_hdr(skb)->daddr)))) {
1432 /* fw_debug ( "transmitting arp or multicast packet\n" );*/ 1325 max_payload = dev->broadcast_xmt_max_payload;
1433 tx_type = IPV4_GASP; 1326 datagram_label_ptr = &dev->broadcast_xmt_datagramlabel;
1434 dest_node = ALL_NODES; 1327
1435 max_payload = priv->broadcast_xmt_max_payload; 1328 ptask->fifo_addr = FWNET_NO_FIFO_ADDR;
1436 /* BUG_ON(max_payload < S100_BUFFER_SIZE - IPV4_GASP_OVERHEAD); */ 1329 ptask->generation = 0;
1437 datagram_label_ptr = &priv->broadcast_xmt_datagramlabel; 1330 ptask->dest_node = IEEE1394_ALL_NODES;
1438 ptask->fifo_addr = INVALID_FIFO_ADDR; 1331 ptask->speed = SCODE_100;
1439 ptask->generation = 0U;
1440 ptask->dest_node = 0U;
1441 ptask->speed = 0;
1442 } else { 1332 } else {
1443 __be64 guid = get_unaligned((u64 *)hdr_buf.h_dest); 1333 __be64 guid = get_unaligned((__be64 *)hdr_buf.h_dest);
1444 u8 generation; 1334 u8 generation;
1445 1335
1446 node = ipv4_node_find_by_guid(priv, be64_to_cpu(guid)); 1336 peer = fwnet_peer_find_by_guid(dev, be64_to_cpu(guid));
1447 if (!node) { 1337 if (!peer)
1448 fw_debug ( "Normal packet but no node\n" );
1449 goto fail; 1338 goto fail;
1450 }
1451 1339
1452 if (node->fifo == INVALID_FIFO_ADDR) { 1340 if (peer->fifo == FWNET_NO_FIFO_ADDR)
1453 fw_debug ( "Normal packet but no fifo addr\n" );
1454 goto fail; 1341 goto fail;
1455 }
1456 1342
1457 /* fw_debug ( "Transmitting normal packet to %x at %llxx\n", node->nodeid, node->fifo ); */ 1343 generation = peer->generation;
1458 generation = node->generation; 1344 smp_rmb();
1459 dest_node = node->nodeid; 1345 dest_node = peer->node_id;
1460 max_payload = node->max_payload; 1346
1461 /* BUG_ON(max_payload < S100_BUFFER_SIZE - IPV4_FRAG_HDR_SIZE); */ 1347 max_payload = peer->max_payload;
1348 datagram_label_ptr = &peer->datagram_label;
1462 1349
1463 datagram_label_ptr = &node->datagram_label; 1350 ptask->fifo_addr = peer->fifo;
1464 tx_type = IPV4_WRREQ;
1465 ptask->fifo_addr = node->fifo;
1466 ptask->generation = generation; 1351 ptask->generation = generation;
1467 ptask->dest_node = dest_node; 1352 ptask->dest_node = dest_node;
1468 ptask->speed = node->xmt_speed; 1353 ptask->speed = peer->xmt_speed;
1469 } 1354 }
1470 1355
1471 /* If this is an ARP packet, convert it */ 1356 /* If this is an ARP packet, convert it */
1472 if (proto == htons(ETH_P_ARP)) { 1357 if (proto == htons(ETH_P_ARP)) {
1473 /* Convert a standard ARP packet to 1394 ARP. The first 8 bytes (the entire
1474 * arphdr) is the same format as the ip1394 header, so they overlap. The rest
1475 * needs to be munged a bit. The remainder of the arphdr is formatted based
1476 * on hwaddr len and ipaddr len. We know what they'll be, so it's easy to
1477 * judge.
1478 *
1479 * Now that the EUI is used for the hardware address all we need to do to make
1480 * this work for 1394 is to insert 2 quadlets that contain max_rec size,
1481 * speed, and unicast FIFO address information between the sender_unique_id
1482 * and the IP addresses.
1483 */
1484 struct arphdr *arp = (struct arphdr *)skb->data; 1358 struct arphdr *arp = (struct arphdr *)skb->data;
1485 unsigned char *arp_ptr = (unsigned char *)(arp + 1); 1359 unsigned char *arp_ptr = (unsigned char *)(arp + 1);
1486 struct ipv4_arp *arp1394 = (struct ipv4_arp *)skb->data; 1360 struct rfc2734_arp *arp1394 = (struct rfc2734_arp *)skb->data;
1487 u32 ipaddr; 1361 __be32 ipaddr;
1488 1362
1489 ipaddr = *(u32*)(arp_ptr + IPV4_ALEN); 1363 ipaddr = get_unaligned((__be32 *)(arp_ptr + FWNET_ALEN));
1490 arp1394->hw_addr_len = 16; 1364
1491 arp1394->max_rec = priv->card->max_receive; 1365 arp1394->hw_addr_len = RFC2734_HW_ADDR_LEN;
1492 arp1394->sspd = priv->card->link_speed; 1366 arp1394->max_rec = dev->card->max_receive;
1493 arp1394->fifo_hi = htons(priv->local_fifo >> 32); 1367 arp1394->sspd = dev->card->link_speed;
1494 arp1394->fifo_lo = htonl(priv->local_fifo & 0xFFFFFFFF); 1368
1495 arp1394->sip = ipaddr; 1369 put_unaligned_be16(dev->local_fifo >> 32,
1370 &arp1394->fifo_hi);
1371 put_unaligned_be32(dev->local_fifo & 0xffffffff,
1372 &arp1394->fifo_lo);
1373 put_unaligned(ipaddr, &arp1394->sip);
1496 } 1374 }
1497 if ( ipv4_max_xmt && max_payload > ipv4_max_xmt )
1498 max_payload = ipv4_max_xmt;
1499 1375
1500 ptask->hdr.w0 = 0; 1376 ptask->hdr.w0 = 0;
1501 ptask->hdr.w1 = 0; 1377 ptask->hdr.w1 = 0;
1502 ptask->skb = skb; 1378 ptask->skb = skb;
1503 ptask->priv = priv; 1379 ptask->dev = dev;
1504 ptask->tx_type = tx_type; 1380
1505 /* Does it all fit in one packet? */ 1381 /* Does it all fit in one packet? */
1506 if ( dg_size <= max_payload ) { 1382 if (dg_size <= max_payload) {
1507 ipv4_make_uf_hdr(&ptask->hdr, be16_to_cpu(proto)); 1383 fwnet_make_uf_hdr(&ptask->hdr, ntohs(proto));
1508 ptask->outstanding_pkts = 1; 1384 ptask->outstanding_pkts = 1;
1509 max_payload = dg_size + IPV4_UNFRAG_HDR_SIZE; 1385 max_payload = dg_size + RFC2374_UNFRAG_HDR_SIZE;
1510 } else { 1386 } else {
1511 u16 datagram_label; 1387 u16 datagram_label;
1512 1388
1513 max_payload -= IPV4_FRAG_OVERHEAD; 1389 max_payload -= RFC2374_FRAG_OVERHEAD;
1514 datagram_label = (*datagram_label_ptr)++; 1390 datagram_label = (*datagram_label_ptr)++;
1515 ipv4_make_ff_hdr(&ptask->hdr, be16_to_cpu(proto), dg_size, datagram_label ); 1391 fwnet_make_ff_hdr(&ptask->hdr, ntohs(proto), dg_size,
1392 datagram_label);
1516 ptask->outstanding_pkts = DIV_ROUND_UP(dg_size, max_payload); 1393 ptask->outstanding_pkts = DIV_ROUND_UP(dg_size, max_payload);
1517 max_payload += IPV4_FRAG_HDR_SIZE; 1394 max_payload += RFC2374_FRAG_HDR_SIZE;
1518 } 1395 }
1519 ptask->max_payload = max_payload; 1396 ptask->max_payload = max_payload;
1520 ipv4_send_packet ( ptask ); 1397 fwnet_send_packet(ptask);
1398
1521 return NETDEV_TX_OK; 1399 return NETDEV_TX_OK;
1522 1400
1523 fail: 1401 fail:
1524 if (ptask) 1402 if (ptask)
1525 kmem_cache_free(ipv4_packet_task_cache, ptask); 1403 kmem_cache_free(fwnet_packet_task_cache, ptask);
1526 1404
1527 if (skb != NULL) 1405 if (skb != NULL)
1528 dev_kfree_skb(skb); 1406 dev_kfree_skb(skb);
1529 1407
1530 netdev->stats.tx_dropped++; 1408 net->stats.tx_dropped++;
1531 netdev->stats.tx_errors++; 1409 net->stats.tx_errors++;
1532 1410
1533 /* 1411 /*
1534 * FIXME: According to a patch from 2003-02-26, "returning non-zero 1412 * FIXME: According to a patch from 2003-02-26, "returning non-zero
@@ -1540,280 +1418,291 @@ static int ipv4_tx(struct sk_buff *skb, struct net_device *netdev)
1540 return NETDEV_TX_OK; 1418 return NETDEV_TX_OK;
1541} 1419}
1542 1420
1543/* 1421static void fwnet_tx_timeout(struct net_device *net)
1544 * FIXME: What to do if we timeout? I think a host reset is probably in order, 1422{
1545 * so that's what we do. Should we increment the stat counters too? 1423 fw_error("%s: timeout\n", net->name);
1546 */
1547static void ipv4_tx_timeout(struct net_device *dev) {
1548 struct ipv4_priv *priv;
1549 1424
1550 priv = netdev_priv(dev); 1425 /* FIXME: What to do if we timeout? */
1551 fw_error ( "%s: Timeout, resetting host\n", dev->name );
1552#if 0 /* stefanr */
1553 fw_core_initiate_bus_reset ( priv->card, 1 );
1554#endif
1555} 1426}
1556 1427
1557static int ipv4_change_mtu ( struct net_device *dev, int new_mtu ) { 1428static int fwnet_change_mtu(struct net_device *net, int new_mtu)
1558#if 0 1429{
1559 int max_mtu;
1560 struct ipv4_priv *priv;
1561#endif
1562
1563 if (new_mtu < 68) 1430 if (new_mtu < 68)
1564 return -EINVAL; 1431 return -EINVAL;
1565 1432
1566#if 0 1433 net->mtu = new_mtu;
1567 priv = netdev_priv(dev);
1568 /* This is not actually true because we can fragment packets at the firewire layer */
1569 max_mtu = (1 << (priv->card->max_receive + 1))
1570 - sizeof(struct ipv4_hdr) - IPV4_GASP_OVERHEAD;
1571 if (new_mtu > max_mtu) {
1572 fw_notify ( "%s: Local node constrains MTU to %d\n", dev->name, max_mtu);
1573 return -ERANGE;
1574 }
1575#endif
1576 dev->mtu = new_mtu;
1577 return 0; 1434 return 0;
1578} 1435}
1579 1436
1580static void ipv4_get_drvinfo(struct net_device *dev, 1437static void fwnet_get_drvinfo(struct net_device *net,
1581struct ethtool_drvinfo *info) { 1438 struct ethtool_drvinfo *info)
1582 strcpy(info->driver, ipv4_driver_name); 1439{
1583 strcpy(info->bus_info, "ieee1394"); /* FIXME provide more detail? */ 1440 strcpy(info->driver, KBUILD_MODNAME);
1441 strcpy(info->bus_info, "ieee1394");
1584} 1442}
1585 1443
1586static struct ethtool_ops ipv4_ethtool_ops = { 1444static struct ethtool_ops fwnet_ethtool_ops = {
1587 .get_drvinfo = ipv4_get_drvinfo, 1445 .get_drvinfo = fwnet_get_drvinfo,
1588}; 1446};
1589 1447
1590static const struct net_device_ops ipv4_netdev_ops = { 1448static const struct net_device_ops fwnet_netdev_ops = {
1591 .ndo_open = ipv4_open, 1449 .ndo_open = fwnet_open,
1592 .ndo_stop = ipv4_stop, 1450 .ndo_stop = fwnet_stop,
1593 .ndo_start_xmit = ipv4_tx, 1451 .ndo_start_xmit = fwnet_tx,
1594 .ndo_tx_timeout = ipv4_tx_timeout, 1452 .ndo_tx_timeout = fwnet_tx_timeout,
1595 .ndo_change_mtu = ipv4_change_mtu, 1453 .ndo_change_mtu = fwnet_change_mtu,
1596}; 1454};
1597 1455
1598static void ipv4_init_dev ( struct net_device *dev ) { 1456static void fwnet_init_dev(struct net_device *net)
1599 dev->header_ops = &ipv4_header_ops; 1457{
1600 dev->netdev_ops = &ipv4_netdev_ops; 1458 net->header_ops = &fwnet_header_ops;
1601 SET_ETHTOOL_OPS(dev, &ipv4_ethtool_ops); 1459 net->netdev_ops = &fwnet_netdev_ops;
1602 1460 net->watchdog_timeo = 100000; /* ? FIXME */
1603 dev->watchdog_timeo = IPV4_TIMEOUT; 1461 net->flags = IFF_BROADCAST | IFF_MULTICAST;
1604 dev->flags = IFF_BROADCAST | IFF_MULTICAST; 1462 net->features = NETIF_F_HIGHDMA;
1605 dev->features = NETIF_F_HIGHDMA; 1463 net->addr_len = FWNET_ALEN;
1606 dev->addr_len = IPV4_ALEN; 1464 net->hard_header_len = FWNET_HLEN;
1607 dev->hard_header_len = IPV4_HLEN; 1465 net->type = ARPHRD_IEEE1394;
1608 dev->type = ARPHRD_IEEE1394; 1466 net->tx_queue_len = 1000; /* ? FIXME */
1609 1467 SET_ETHTOOL_OPS(net, &fwnet_ethtool_ops);
1610 /* FIXME: This value was copied from ether_setup(). Is it too much? */
1611 dev->tx_queue_len = 1000;
1612} 1468}
1613 1469
1614static int ipv4_probe ( struct device *dev ) { 1470/* FIXME create netdev upon first fw_unit of a card, not upon local fw_unit */
1615 struct fw_unit * unit; 1471static int fwnet_probe(struct device *_dev)
1616 struct fw_device *device; 1472{
1617 struct fw_card *card; 1473 struct fw_unit *unit = fw_unit(_dev);
1618 struct net_device *netdev; 1474 struct fw_device *device = fw_parent_device(unit);
1619 struct ipv4_priv *priv; 1475 struct fw_card *card = device->card;
1476 struct net_device *net;
1477 struct fwnet_device *dev;
1620 unsigned max_mtu; 1478 unsigned max_mtu;
1621 __be64 guid;
1622
1623 fw_debug("ipv4 Probing\n" );
1624 unit = fw_unit ( dev );
1625 device = fw_device ( unit->device.parent );
1626 card = device->card;
1627 1479
1628 if ( ! device->is_local ) { 1480 if (!device->is_local) {
1629 int added; 1481 int added;
1630 1482
1631 fw_debug ( "Non-local, adding remote node entry\n" ); 1483 added = fwnet_peer_new(card, device);
1632 added = ipv4_node_new ( card, device );
1633 return added; 1484 return added;
1634 } 1485 }
1635 fw_debug("ipv4 Local: adding netdev\n" ); 1486 net = alloc_netdev(sizeof(*dev), "firewire%d", fwnet_init_dev);
1636 netdev = alloc_netdev ( sizeof(*priv), "firewire%d", ipv4_init_dev ); 1487 if (net == NULL) {
1637 if ( netdev == NULL) { 1488 fw_error("out of memory\n");
1638 fw_error( "Out of memory\n");
1639 goto out; 1489 goto out;
1640 } 1490 }
1641 1491
1642 SET_NETDEV_DEV(netdev, card->device); 1492 SET_NETDEV_DEV(net, card->device);
1643 priv = netdev_priv(netdev); 1493 dev = netdev_priv(net);
1644 1494
1645 spin_lock_init(&priv->lock); 1495 spin_lock_init(&dev->lock);
1646 priv->broadcast_state = IPV4_BROADCAST_ERROR; 1496 dev->broadcast_state = FWNET_BROADCAST_ERROR;
1647 priv->broadcast_rcv_context = NULL; 1497 dev->broadcast_rcv_context = NULL;
1648 priv->broadcast_xmt_max_payload = 0; 1498 dev->broadcast_xmt_max_payload = 0;
1649 priv->broadcast_xmt_datagramlabel = 0; 1499 dev->broadcast_xmt_datagramlabel = 0;
1650 1500
1651 priv->local_fifo = INVALID_FIFO_ADDR; 1501 dev->local_fifo = FWNET_NO_FIFO_ADDR;
1652 1502
1653 /* INIT_WORK(&priv->wake, ipv4_handle_queue);*/ 1503 /* INIT_WORK(&dev->wake, fwnet_handle_queue);*/
1654 INIT_LIST_HEAD(&priv->packet_list); 1504 INIT_LIST_HEAD(&dev->packet_list);
1655 INIT_LIST_HEAD(&priv->broadcasted_list); 1505 INIT_LIST_HEAD(&dev->broadcasted_list);
1656 INIT_LIST_HEAD(&priv->sent_list ); 1506 INIT_LIST_HEAD(&dev->sent_list);
1657 1507
1658 priv->card = card; 1508 dev->card = card;
1659 1509
1660 /* 1510 /*
1661 * Use the RFC 2734 default 1500 octets or the maximum payload 1511 * Use the RFC 2734 default 1500 octets or the maximum payload
1662 * as initial MTU 1512 * as initial MTU
1663 */ 1513 */
1664 max_mtu = (1 << (card->max_receive + 1)) 1514 max_mtu = (1 << (card->max_receive + 1))
1665 - sizeof(struct ipv4_hdr) - IPV4_GASP_OVERHEAD; 1515 - sizeof(struct rfc2734_header) - IEEE1394_GASP_HDR_SIZE;
1666 netdev->mtu = min(1500U, max_mtu); 1516 net->mtu = min(1500U, max_mtu);
1667 1517
1668 /* Set our hardware address while we're at it */ 1518 /* Set our hardware address while we're at it */
1669 guid = cpu_to_be64(card->guid); 1519 put_unaligned_be64(card->guid, net->dev_addr);
1670 memcpy(netdev->dev_addr, &guid, sizeof(u64)); 1520 put_unaligned_be64(~0ULL, net->broadcast);
1671 memset(netdev->broadcast, 0xff, sizeof(u64)); 1521 if (register_netdev(net)) {
1672 if ( register_netdev ( netdev ) ) { 1522 fw_error("Cannot register the driver\n");
1673 fw_error ( "Cannot register the driver\n");
1674 goto out; 1523 goto out;
1675 } 1524 }
1676 1525
1677 fw_notify ( "%s: IPv4 over Firewire on device %016llx\n", 1526 fw_notify("%s: IPv4 over FireWire on device %016llx\n",
1678 netdev->name, card->guid ); 1527 net->name, (unsigned long long)card->guid);
1679 card->netdev = netdev; 1528 card->netdev = net;
1680 1529
1681 return 0 /* ipv4_new_node ( ud ) */; 1530 return 0;
1682 out: 1531 out:
1683 if ( netdev ) 1532 if (net)
1684 free_netdev ( netdev ); 1533 free_netdev(net);
1534
1685 return -ENOENT; 1535 return -ENOENT;
1686} 1536}
1687 1537
1538static int fwnet_remove(struct device *_dev)
1539{
1540 struct fw_unit *unit = fw_unit(_dev);
1541 struct fw_device *device = fw_parent_device(unit);
1542 struct fw_card *card = device->card;
1543 struct net_device *net;
1544 struct fwnet_device *dev;
1545 struct fwnet_peer *peer;
1546 struct fwnet_partial_datagram *pd, *pd_next;
1547 struct fwnet_packet_task *ptask, *pt_next;
1548
1549 if (!device->is_local) {
1550 fwnet_peer_delete(card, device);
1688 1551
1689static int ipv4_remove ( struct device *dev ) {
1690 struct fw_unit * unit;
1691 struct fw_device *device;
1692 struct fw_card *card;
1693 struct net_device *netdev;
1694 struct ipv4_priv *priv;
1695 struct ipv4_node *node;
1696 struct ipv4_partial_datagram *pd, *pd_next;
1697 struct ipv4_packet_task *ptask, *pt_next;
1698
1699 fw_debug("ipv4 Removing\n" );
1700 unit = fw_unit ( dev );
1701 device = fw_device ( unit->device.parent );
1702 card = device->card;
1703
1704 if ( ! device->is_local ) {
1705 fw_debug ( "Node %x is non-local, removing remote node entry\n", device->node_id );
1706 ipv4_node_delete ( card, device );
1707 return 0; 1552 return 0;
1708 } 1553 }
1709 netdev = card->netdev; 1554
1710 if ( netdev ) { 1555 net = card->netdev;
1711 fw_debug ( "Node %x is local: deleting netdev\n", device->node_id ); 1556 if (net) {
1712 priv = netdev_priv ( netdev ); 1557 dev = netdev_priv(net);
1713 unregister_netdev ( netdev ); 1558 unregister_netdev(net);
1714 fw_debug ( "unregistered\n" ); 1559
1715 if ( priv->local_fifo != INVALID_FIFO_ADDR ) 1560 if (dev->local_fifo != FWNET_NO_FIFO_ADDR)
1716 fw_core_remove_address_handler ( &priv->handler ); 1561 fw_core_remove_address_handler(&dev->handler);
1717 fw_debug ( "address handler gone\n" ); 1562 if (dev->broadcast_rcv_context) {
1718 if ( priv->broadcast_rcv_context ) { 1563 fw_iso_context_stop(dev->broadcast_rcv_context);
1719 fw_iso_context_stop ( priv->broadcast_rcv_context ); 1564 fw_iso_buffer_destroy(&dev->broadcast_rcv_buffer,
1720 fw_iso_buffer_destroy ( &priv->broadcast_rcv_buffer, priv->card ); 1565 dev->card);
1721 fw_iso_context_destroy ( priv->broadcast_rcv_context ); 1566 fw_iso_context_destroy(dev->broadcast_rcv_context);
1722 fw_debug ( "rcv stopped\n" );
1723 } 1567 }
1724 list_for_each_entry_safe( ptask, pt_next, &priv->packet_list, packet_list ) { 1568 list_for_each_entry_safe(ptask, pt_next,
1725 dev_kfree_skb_any ( ptask->skb ); 1569 &dev->packet_list, pt_link) {
1726 kmem_cache_free( ipv4_packet_task_cache, ptask ); 1570 dev_kfree_skb_any(ptask->skb);
1571 kmem_cache_free(fwnet_packet_task_cache, ptask);
1727 } 1572 }
1728 list_for_each_entry_safe( ptask, pt_next, &priv->broadcasted_list, packet_list ) { 1573 list_for_each_entry_safe(ptask, pt_next,
1729 dev_kfree_skb_any ( ptask->skb ); 1574 &dev->broadcasted_list, pt_link) {
1730 kmem_cache_free( ipv4_packet_task_cache, ptask ); 1575 dev_kfree_skb_any(ptask->skb);
1576 kmem_cache_free(fwnet_packet_task_cache, ptask);
1731 } 1577 }
1732 list_for_each_entry_safe( ptask, pt_next, &priv->sent_list, packet_list ) { 1578 list_for_each_entry_safe(ptask, pt_next,
1733 dev_kfree_skb_any ( ptask->skb ); 1579 &dev->sent_list, pt_link) {
1734 kmem_cache_free( ipv4_packet_task_cache, ptask ); 1580 dev_kfree_skb_any(ptask->skb);
1581 kmem_cache_free(fwnet_packet_task_cache, ptask);
1735 } 1582 }
1736 fw_debug ( "lists emptied\n" ); 1583 list_for_each_entry(peer, &card->peer_list, peer_link) {
1737 list_for_each_entry( node, &card->ipv4_nodes, ipv4_nodes ) { 1584 if (peer->pdg_size) {
1738 if ( node->pdg_size ) { 1585 list_for_each_entry_safe(pd, pd_next,
1739 list_for_each_entry_safe( pd, pd_next, &node->pdg_list, pdg_list ) 1586 &peer->pd_list, pd_link)
1740 ipv4_pd_delete ( pd ); 1587 fwnet_pd_delete(pd);
1741 node->pdg_size = 0; 1588 peer->pdg_size = 0;
1742 } 1589 }
1743 node->fifo = INVALID_FIFO_ADDR; 1590 peer->fifo = FWNET_NO_FIFO_ADDR;
1744 } 1591 }
1745 fw_debug ( "nodes cleaned up\n" ); 1592 free_netdev(net);
1746 free_netdev ( netdev );
1747 card->netdev = NULL; 1593 card->netdev = NULL;
1748 fw_debug ( "done\n" );
1749 } 1594 }
1595
1750 return 0; 1596 return 0;
1751} 1597}
1752 1598
1753static void ipv4_update ( struct fw_unit *unit ) { 1599/*
1754 struct fw_device *device; 1600 * FIXME abort partially sent fragmented datagrams,
1755 struct fw_card *card; 1601 * discard partially received fragmented datagrams
1602 */
1603static void fwnet_update(struct fw_unit *unit)
1604{
1605 struct fw_device *device = fw_parent_device(unit);
1606 struct net_device *net = device->card->netdev;
1607 struct fwnet_device *dev;
1608 struct fwnet_peer *peer;
1609 u64 guid;
1756 1610
1757 fw_debug ( "ipv4_update unit %p\n", unit ); 1611 if (net && !device->is_local) {
1758 device = fw_device ( unit->device.parent ); 1612 dev = netdev_priv(net);
1759 card = device->card; 1613 guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
1760 if ( ! device->is_local ) { 1614 peer = fwnet_peer_find_by_guid(dev, guid);
1761 struct ipv4_node *node; 1615 if (!peer) {
1762 u64 guid; 1616 fw_error("fwnet_update: no peer for device %016llx\n",
1763 struct net_device *netdev; 1617 (unsigned long long)guid);
1764 struct ipv4_priv *priv; 1618 return;
1765 1619 }
1766 netdev = card->netdev; 1620 peer->generation = device->generation;
1767 if ( netdev ) { 1621 rmb();
1768 priv = netdev_priv ( netdev ); 1622 peer->node_id = device->node_id;
1769 guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
1770 node = ipv4_node_find_by_guid ( priv, guid );
1771 if ( ! node ) {
1772 fw_error ( "ipv4_update: no node for device %llx\n", guid );
1773 return;
1774 }
1775 fw_debug ( "Non-local, updating remote node entry for guid %llx old generation %x, old nodeid %x\n", guid, node->generation, node->nodeid );
1776 node->generation = device->generation;
1777 rmb();
1778 node->nodeid = device->node_id;
1779 fw_debug ( "New generation %x, new nodeid %x\n", node->generation, node->nodeid );
1780 } else
1781 fw_error ( "nonlocal, but no netdev? How can that be?\n" );
1782 } else {
1783 /* FIXME: What do we need to do on bus reset? */
1784 fw_debug ( "Local, doing nothing\n" );
1785 } 1623 }
1786} 1624}
1787 1625
1788static struct fw_driver ipv4_driver = { 1626static const struct ieee1394_device_id fwnet_id_table[] = {
1627 {
1628 .match_flags = IEEE1394_MATCH_SPECIFIER_ID |
1629 IEEE1394_MATCH_VERSION,
1630 .specifier_id = IANA_SPECIFIER_ID,
1631 .version = RFC2734_SW_VERSION,
1632 },
1633 { }
1634};
1635
1636static struct fw_driver fwnet_driver = {
1789 .driver = { 1637 .driver = {
1790 .owner = THIS_MODULE, 1638 .owner = THIS_MODULE,
1791 .name = ipv4_driver_name, 1639 .name = "net",
1792 .bus = &fw_bus_type, 1640 .bus = &fw_bus_type,
1793 .probe = ipv4_probe, 1641 .probe = fwnet_probe,
1794 .remove = ipv4_remove, 1642 .remove = fwnet_remove,
1795 }, 1643 },
1796 .update = ipv4_update, 1644 .update = fwnet_update,
1797 .id_table = ipv4_id_table, 1645 .id_table = fwnet_id_table,
1646};
1647
1648static const u32 rfc2374_unit_directory_data[] = {
1649 0x00040000, /* directory_length */
1650 0x1200005e, /* unit_specifier_id: IANA */
1651 0x81000003, /* textual descriptor offset */
1652 0x13000001, /* unit_sw_version: RFC 2734 */
1653 0x81000005, /* textual descriptor offset */
1654 0x00030000, /* descriptor_length */
1655 0x00000000, /* text */
1656 0x00000000, /* minimal ASCII, en */
1657 0x49414e41, /* I A N A */
1658 0x00030000, /* descriptor_length */
1659 0x00000000, /* text */
1660 0x00000000, /* minimal ASCII, en */
1661 0x49507634, /* I P v 4 */
1662};
1663
1664static struct fw_descriptor rfc2374_unit_directory = {
1665 .length = ARRAY_SIZE(rfc2374_unit_directory_data),
1666 .key = (CSR_DIRECTORY | CSR_UNIT) << 24,
1667 .data = rfc2374_unit_directory_data
1798}; 1668};
1799 1669
1800static int __init ipv4_init ( void ) { 1670static int __init fwnet_init(void)
1801 int added; 1671{
1672 int err;
1673
1674 err = fw_core_add_descriptor(&rfc2374_unit_directory);
1675 if (err)
1676 return err;
1802 1677
1803 added = fw_core_add_descriptor ( &ipv4_unit_directory ); 1678 fwnet_packet_task_cache = kmem_cache_create("packet_task",
1804 if ( added < 0 ) 1679 sizeof(struct fwnet_packet_task), 0, 0, NULL);
1805 fw_error ( "Failed to add descriptor" ); 1680 if (!fwnet_packet_task_cache) {
1806 ipv4_packet_task_cache = kmem_cache_create("packet_task", 1681 err = -ENOMEM;
1807 sizeof(struct ipv4_packet_task), 0, 0, NULL); 1682 goto out;
1808 fw_debug("Adding ipv4 module\n" ); 1683 }
1809 return driver_register ( &ipv4_driver.driver ); 1684
1685 err = driver_register(&fwnet_driver.driver);
1686 if (!err)
1687 return 0;
1688
1689 kmem_cache_destroy(fwnet_packet_task_cache);
1690out:
1691 fw_core_remove_descriptor(&rfc2374_unit_directory);
1692
1693 return err;
1810} 1694}
1695module_init(fwnet_init);
1811 1696
1812static void __exit ipv4_cleanup ( void ) { 1697static void __exit fwnet_cleanup(void)
1813 fw_core_remove_descriptor ( &ipv4_unit_directory ); 1698{
1814 fw_debug("Removing ipv4 module\n" ); 1699 driver_unregister(&fwnet_driver.driver);
1815 driver_unregister ( &ipv4_driver.driver ); 1700 kmem_cache_destroy(fwnet_packet_task_cache);
1701 fw_core_remove_descriptor(&rfc2374_unit_directory);
1816} 1702}
1703module_exit(fwnet_cleanup);
1817 1704
1818module_init(ipv4_init); 1705MODULE_AUTHOR("Jay Fenlason <fenlason@redhat.com>");
1819module_exit(ipv4_cleanup); 1706MODULE_DESCRIPTION("IPv4 over IEEE1394 as per RFC 2734");
1707MODULE_LICENSE("GPL");
1708MODULE_DEVICE_TABLE(ieee1394, fwnet_id_table);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-10 18:51:23 -0500