* based on eth1394 by Ben Collins et al
*/
+#include <linux/bug.h>
#include <linux/device.h>
#include <linux/ethtool.h>
#include <linux/firewire.h>
#include <linux/highmem.h>
#include <linux/in.h>
#include <linux/ip.h>
+#include <linux/jiffies.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <asm/unaligned.h>
#include <net/arp.h>
-/* Things to potentially make runtime cofigurable */
-/* must be at least as large as our maximum receive size */
-#define FIFO_SIZE 4096
-/* Network timeout in glibbles */
-#define IPV4_TIMEOUT 100000
+#define FWNET_MAX_FRAGMENTS 25 /* arbitrary limit */
+#define FWNET_ISO_PAGE_COUNT (PAGE_SIZE < 16 * 1024 ? 4 : 2)
-/* Runitme configurable paramaters */
-static int ipv4_mpd = 25;
-static int ipv4_max_xmt = 0;
-/* 16k for receiving arp and broadcast packets. Enough? */
-static int ipv4_iso_page_count = 4;
+#define IEEE1394_BROADCAST_CHANNEL 31
+#define IEEE1394_ALL_NODES (0xffc0 | 0x003f)
+#define IEEE1394_MAX_PAYLOAD_S100 512
+#define FWNET_NO_FIFO_ADDR (~0ULL)
-MODULE_AUTHOR("Jay Fenlason (fenlason@redhat.com)");
-MODULE_DESCRIPTION("Firewire IPv4 Driver (IPv4-over-IEEE1394 as per RFC 2734)");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(ieee1394, ipv4_id_table);
-module_param_named(max_partial_datagrams, ipv4_mpd, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(max_partial_datagrams, "Maximum number of received"
- " incomplete fragmented datagrams (default = 25).");
-
-/* Max xmt is useful for forcing fragmentation, which makes testing easier. */
-module_param_named(max_transmit, ipv4_max_xmt, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(max_transmit, "Maximum datagram size to transmit"
- " (larger datagrams will be fragmented) (default = 0 (use hardware defaults).");
-
-/* iso page count controls how many pages will be used for receiving broadcast packets. */
-module_param_named(iso_pages, ipv4_iso_page_count, int, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(iso_pages, "Number of pages to use for receiving broadcast packets"
- " (default = 4).");
-
-/* uncomment this line to do debugging */
-#define fw_debug(s, args...) printk(KERN_DEBUG KBUILD_MODNAME ": " s, ## args)
-
-/* comment out these lines to do debugging. */
-/* #undef fw_debug */
-/* #define fw_debug(s...) */
-/* #define print_hex_dump(l...) */
-
-/* Define a fake hardware header format for the networking core. Note that
- * header size cannot exceed 16 bytes as that is the size of the header cache.
- * Also, we do not need the source address in the header so we omit it and
- * keep the header to under 16 bytes */
-#define IPV4_ALEN (8)
-/* This must equal sizeof(struct ipv4_ether_hdr) */
-#define IPV4_HLEN (10)
-
-/* FIXME: what's a good size for this? */
-#define INVALID_FIFO_ADDR (u64)~0ULL
-
-/* Things specified by standards */
-#define BROADCAST_CHANNEL 31
-
-#define S100_BUFFER_SIZE 512
-#define MAX_BUFFER_SIZE 4096
-
-#define IPV4_GASP_SPECIFIER_ID 0x00005EU
-#define IPV4_GASP_VERSION 0x00000001U
-
-#define IPV4_GASP_OVERHEAD (2 * sizeof(u32)) /* for GASP header */
-
-#define IPV4_UNFRAG_HDR_SIZE sizeof(u32)
-#define IPV4_FRAG_HDR_SIZE (2 * sizeof(u32))
-#define IPV4_FRAG_OVERHEAD sizeof(u32)
-
-#define ALL_NODES (0xffc0 | 0x003f)
-
-#define IPV4_HDR_UNFRAG 0 /* unfragmented */
-#define IPV4_HDR_FIRSTFRAG 1 /* first fragment */
-#define IPV4_HDR_LASTFRAG 2 /* last fragment */
-#define IPV4_HDR_INTFRAG 3 /* interior fragment */
-
-/* Our arp packet (ARPHRD_IEEE1394) */
-/* FIXME: note that this is probably bogus on weird-endian machines */
-struct ipv4_arp {
- u16 hw_type; /* 0x0018 */
- u16 proto_type; /* 0x0806 */
- u8 hw_addr_len; /* 16 */
- u8 ip_addr_len; /* 4 */
- u16 opcode; /* ARP Opcode */
- /* Above is exactly the same format as struct arphdr */
-
- u64 s_uniq_id; /* Sender's 64bit EUI */
- u8 max_rec; /* Sender's max packet size */
- u8 sspd; /* Sender's max speed */
- u16 fifo_hi; /* hi 16bits of sender's FIFO addr */
- u32 fifo_lo; /* lo 32bits of sender's FIFO addr */
- u32 sip; /* Sender's IP Address */
- u32 tip; /* IP Address of requested hw addr */
-} __attribute__((packed));
+#define IANA_SPECIFIER_ID 0x00005eU
+#define RFC2734_SW_VERSION 0x000001U
-struct ipv4_ether_hdr {
- unsigned char h_dest[IPV4_ALEN]; /* destination address */
- unsigned short h_proto; /* packet type ID field */
-} __attribute__((packed));
+#define IEEE1394_GASP_HDR_SIZE 8
-static inline struct ipv4_ether_hdr *ipv4_ether_hdr(const struct sk_buff *skb)
-{
- return (struct ipv4_ether_hdr *)skb_mac_header(skb);
-}
+#define RFC2374_UNFRAG_HDR_SIZE 4
+#define RFC2374_FRAG_HDR_SIZE 8
+#define RFC2374_FRAG_OVERHEAD 4
-enum ipv4_tx_type {
- IPV4_UNKNOWN = 0,
- IPV4_GASP = 1,
- IPV4_WRREQ = 2,
-};
+#define RFC2374_HDR_UNFRAG 0 /* unfragmented */
+#define RFC2374_HDR_FIRSTFRAG 1 /* first fragment */
+#define RFC2374_HDR_LASTFRAG 2 /* last fragment */
+#define RFC2374_HDR_INTFRAG 3 /* interior fragment */
-enum ipv4_broadcast_state {
- IPV4_BROADCAST_ERROR,
- IPV4_BROADCAST_RUNNING,
- IPV4_BROADCAST_STOPPED,
-};
+#define RFC2734_HW_ADDR_LEN 16
-#define ipv4_get_hdr_lf(h) (((h)->w0&0xC0000000)>>30)
-#define ipv4_get_hdr_ether_type(h) (((h)->w0&0x0000FFFF) )
-#define ipv4_get_hdr_dg_size(h) (((h)->w0&0x0FFF0000)>>16)
-#define ipv4_get_hdr_fg_off(h) (((h)->w0&0x00000FFF) )
-#define ipv4_get_hdr_dgl(h) (((h)->w1&0xFFFF0000)>>16)
+struct rfc2734_arp {
+ __be16 hw_type; /* 0x0018 */
+ __be16 proto_type; /* 0x0806 */
+ u8 hw_addr_len; /* 16 */
+ u8 ip_addr_len; /* 4 */
+ __be16 opcode; /* ARP Opcode */
+ /* Above is exactly the same format as struct arphdr */
-#define ipv4_set_hdr_lf(lf) (( lf)<<30)
-#define ipv4_set_hdr_ether_type(et) (( et) )
-#define ipv4_set_hdr_dg_size(dgs) ((dgs)<<16)
-#define ipv4_set_hdr_fg_off(fgo) ((fgo) )
+ __be64 s_uniq_id; /* Sender's 64bit EUI */
+ u8 max_rec; /* Sender's max packet size */
+ u8 sspd; /* Sender's max speed */
+ __be16 fifo_hi; /* hi 16bits of sender's FIFO addr */
+ __be32 fifo_lo; /* lo 32bits of sender's FIFO addr */
+ __be32 sip; /* Sender's IP Address */
+ __be32 tip; /* IP Address of requested hw addr */
+} __attribute__((packed));
-#define ipv4_set_hdr_dgl(dgl) ((dgl)<<16)
+/* This header format is specific to this driver implementation. */
+#define FWNET_ALEN 8
+#define FWNET_HLEN 10
+struct fwnet_header {
+ u8 h_dest[FWNET_ALEN]; /* destination address */
+ __be16 h_proto; /* packet type ID field */
+} __attribute__((packed));
-struct ipv4_hdr {
+/* IPv4 and IPv6 encapsulation header */
+struct rfc2734_header {
u32 w0;
u32 w1;
};
-static inline void ipv4_make_uf_hdr( struct ipv4_hdr *hdr, unsigned ether_type) {
- hdr->w0 = ipv4_set_hdr_lf(IPV4_HDR_UNFRAG)
- |ipv4_set_hdr_ether_type(ether_type);
- fw_debug ( "Setting unfragmented header %p to %x\n", hdr, hdr->w0 );
-}
+#define fwnet_get_hdr_lf(h) (((h)->w0 & 0xc0000000) >> 30)
+#define fwnet_get_hdr_ether_type(h) (((h)->w0 & 0x0000ffff))
+#define fwnet_get_hdr_dg_size(h) (((h)->w0 & 0x0fff0000) >> 16)
+#define fwnet_get_hdr_fg_off(h) (((h)->w0 & 0x00000fff))
+#define fwnet_get_hdr_dgl(h) (((h)->w1 & 0xffff0000) >> 16)
-static inline void ipv4_make_ff_hdr ( struct ipv4_hdr *hdr, unsigned ether_type, unsigned dg_size, unsigned dgl ) {
- hdr->w0 = ipv4_set_hdr_lf(IPV4_HDR_FIRSTFRAG)
- |ipv4_set_hdr_dg_size(dg_size)
- |ipv4_set_hdr_ether_type(ether_type);
- hdr->w1 = ipv4_set_hdr_dgl(dgl);
- fw_debug ( "Setting fragmented header %p to first_frag %x,%x (et %x, dgs %x, dgl %x)\n", hdr, hdr->w0, hdr->w1,
- ether_type, dg_size, dgl );
-}
+#define fwnet_set_hdr_lf(lf) ((lf) << 30)
+#define fwnet_set_hdr_ether_type(et) (et)
+#define fwnet_set_hdr_dg_size(dgs) ((dgs) << 16)
+#define fwnet_set_hdr_fg_off(fgo) (fgo)
-static inline void ipv4_make_sf_hdr ( struct ipv4_hdr *hdr, unsigned lf, unsigned dg_size, unsigned fg_off, unsigned dgl) {
- hdr->w0 = ipv4_set_hdr_lf(lf)
- |ipv4_set_hdr_dg_size(dg_size)
- |ipv4_set_hdr_fg_off(fg_off);
- hdr->w1 = ipv4_set_hdr_dgl(dgl);
- fw_debug ( "Setting fragmented header %p to %x,%x (lf %x, dgs %x, fo %x dgl %x)\n",
- hdr, hdr->w0, hdr->w1,
- lf, dg_size, fg_off, dgl );
-}
+#define fwnet_set_hdr_dgl(dgl) ((dgl) << 16)
-/* End of IP1394 headers */
+static inline void fwnet_make_uf_hdr(struct rfc2734_header *hdr,
+ unsigned ether_type)
+{
+ hdr->w0 = fwnet_set_hdr_lf(RFC2374_HDR_UNFRAG)
+ | fwnet_set_hdr_ether_type(ether_type);
+}
-/* Fragment types */
-#define ETH1394_HDR_LF_UF 0 /* unfragmented */
-#define ETH1394_HDR_LF_FF 1 /* first fragment */
-#define ETH1394_HDR_LF_LF 2 /* last fragment */
-#define ETH1394_HDR_LF_IF 3 /* interior fragment */
+static inline void fwnet_make_ff_hdr(struct rfc2734_header *hdr,
+ unsigned ether_type, unsigned dg_size, unsigned dgl)
+{
+ hdr->w0 = fwnet_set_hdr_lf(RFC2374_HDR_FIRSTFRAG)
+ | fwnet_set_hdr_dg_size(dg_size)
+ | fwnet_set_hdr_ether_type(ether_type);
+ hdr->w1 = fwnet_set_hdr_dgl(dgl);
+}
-#define IP1394_HW_ADDR_LEN 16 /* As per RFC */
+static inline void fwnet_make_sf_hdr(struct rfc2734_header *hdr,
+ unsigned lf, unsigned dg_size, unsigned fg_off, unsigned dgl)
+{
+ hdr->w0 = fwnet_set_hdr_lf(lf)
+ | fwnet_set_hdr_dg_size(dg_size)
+ | fwnet_set_hdr_fg_off(fg_off);
+ hdr->w1 = fwnet_set_hdr_dgl(dgl);
+}
/* This list keeps track of what parts of the datagram have been filled in */
-struct ipv4_fragment_info {
- struct list_head fragment_info;
+struct fwnet_fragment_info {
+ struct list_head fi_link;
u16 offset;
u16 len;
};
-struct ipv4_partial_datagram {
- struct list_head pdg_list;
- struct list_head fragment_info;
+struct fwnet_partial_datagram {
+ struct list_head pd_link;
+ struct list_head fi_list;
struct sk_buff *skb;
/* FIXME Why not use skb->data? */
char *pbuf;
/*
* We keep one of these for each IPv4 capable device attached to a fw_card.
* The list of them is stored in the fw_card structure rather than in the
- * ipv4_priv because the remote IPv4 nodes may be probed before the card is,
- * so we need a place to store them before the ipv4_priv structure is
+ * fwnet_device because the remote IPv4 nodes may be probed before the card is,
+ * so we need a place to store them before the fwnet_device structure is
* allocated.
*/
-struct ipv4_node {
- struct list_head ipv4_nodes;
- /* guid of the remote node */
+struct fwnet_peer {
+ struct list_head peer_link;
+ /* guid of the remote peer */
u64 guid;
- /* FIFO address to transmit datagrams to, or INVALID_FIFO_ADDR */
+ /* FIFO address to transmit datagrams to, or FWNET_NO_FIFO_ADDR */
u64 fifo;
spinlock_t pdg_lock; /* partial datagram lock */
- /* List of partial datagrams received from this node */
- struct list_head pdg_list;
- /* Number of entries in pdg_list at the moment */
+ /* List of partial datagrams received from this peer */
+ struct list_head pd_list;
+ /* Number of entries in pd_list at the moment */
unsigned pdg_size;
- /* max payload to transmit to this remote node */
- /* This already includes the IPV4_FRAG_HDR_SIZE overhead */
+ /* max payload to transmit to this remote peer */
+ /* This already includes the RFC2374_FRAG_HDR_SIZE overhead */
u16 max_payload;
/* outgoing datagram label */
u16 datagram_label;
- /* Current node_id of the remote node */
- u16 nodeid;
- /* current generation of the remote node */
+ /* Current node_id of the remote peer */
+ u16 node_id;
+ /* current generation of the remote peer */
u8 generation;
- /* max speed that this node can receive at */
+ /* max speed that this peer can receive at */
u8 xmt_speed;
};
-struct ipv4_priv {
+struct fwnet_device {
spinlock_t lock;
-
- enum ipv4_broadcast_state broadcast_state;
+ enum {
+ FWNET_BROADCAST_ERROR,
+ FWNET_BROADCAST_RUNNING,
+ FWNET_BROADCAST_STOPPED,
+ } broadcast_state;
struct fw_iso_context *broadcast_rcv_context;
struct fw_iso_buffer broadcast_rcv_buffer;
void **broadcast_rcv_buffer_ptrs;
u16 broadcast_xmt_datagramlabel;
/*
- * The csr address that remote nodes must send datagrams to for us to
+ * The CSR address that remote nodes must send datagrams to for us to
* receive them.
*/
struct fw_address_handler handler;
u64 local_fifo;
- /* Wake up to xmt */
- /* struct work_struct wake;*/
/* List of packets to be sent */
struct list_head packet_list;
/*
};
/* This is our task struct. It's used for the packet complete callback. */
-struct ipv4_packet_task {
+struct fwnet_packet_task {
/*
- * ptask can actually be on priv->packet_list, priv->broadcasted_list,
- * or priv->sent_list depending on its current state.
+ * ptask can actually be on dev->packet_list, dev->broadcasted_list,
+ * or dev->sent_list depending on its current state.
*/
- struct list_head packet_list;
+ struct list_head pt_link;
struct fw_transaction transaction;
- struct ipv4_hdr hdr;
+ struct rfc2734_header hdr;
struct sk_buff *skb;
- struct ipv4_priv *priv;
- enum ipv4_tx_type tx_type;
+ struct fwnet_device *dev;
+
int outstanding_pkts;
unsigned max_payload;
u64 fifo_addr;
u8 speed;
};
-static struct kmem_cache *ipv4_packet_task_cache;
-
-static const char ipv4_driver_name[] = "firewire-ipv4";
-
-static const struct ieee1394_device_id ipv4_id_table[] = {
- {
- .match_flags = IEEE1394_MATCH_SPECIFIER_ID |
- IEEE1394_MATCH_VERSION,
- .specifier_id = IPV4_GASP_SPECIFIER_ID,
- .version = IPV4_GASP_VERSION,
- },
- { }
-};
-
-static u32 ipv4_unit_directory_data[] = {
- 0x00040000, /* unit directory */
- 0x12000000 | IPV4_GASP_SPECIFIER_ID, /* specifier ID */
- 0x81000003, /* text descriptor */
- 0x13000000 | IPV4_GASP_VERSION, /* version */
- 0x81000005, /* text descriptor */
-
- 0x00030000, /* Three quadlets */
- 0x00000000, /* Text */
- 0x00000000, /* Language 0 */
- 0x49414e41, /* I A N A */
- 0x00030000, /* Three quadlets */
- 0x00000000, /* Text */
- 0x00000000, /* Language 0 */
- 0x49507634, /* I P v 4 */
-};
-
-static struct fw_descriptor ipv4_unit_directory = {
- .length = ARRAY_SIZE(ipv4_unit_directory_data),
- .key = 0xd1000000,
- .data = ipv4_unit_directory_data
-};
-
-static int ipv4_send_packet(struct ipv4_packet_task *ptask );
-
-/* ------------------------------------------------------------------ */
-/******************************************
- * HW Header net device functions
- ******************************************/
- /* These functions have been adapted from net/ethernet/eth.c */
-
-/* Create a fake MAC header for an arbitrary protocol layer.
- * saddr=NULL means use device source address
- * daddr=NULL means leave destination address (eg unresolved arp). */
+/*
+ * saddr == NULL means use device source address.
+ * daddr == NULL means leave destination address (eg unresolved arp).
+ */
+static int fwnet_header_create(struct sk_buff *skb, struct net_device *net,
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len)
+{
+ struct fwnet_header *h;
-static int ipv4_header ( struct sk_buff *skb, struct net_device *dev,
- unsigned short type, const void *daddr,
- const void *saddr, unsigned len) {
- struct ipv4_ether_hdr *eth;
+ h = (struct fwnet_header *)skb_push(skb, sizeof(*h));
+ put_unaligned_be16(type, &h->h_proto);
- eth = (struct ipv4_ether_hdr *)skb_push(skb, sizeof(*eth));
- eth->h_proto = htons(type);
+ if (net->flags & (IFF_LOOPBACK | IFF_NOARP)) {
+ memset(h->h_dest, 0, net->addr_len);
- if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) {
- memset(eth->h_dest, 0, dev->addr_len);
- return dev->hard_header_len;
+ return net->hard_header_len;
}
if (daddr) {
- memcpy(eth->h_dest, daddr, dev->addr_len);
- return dev->hard_header_len;
+ memcpy(h->h_dest, daddr, net->addr_len);
+
+ return net->hard_header_len;
}
- return -dev->hard_header_len;
+ return -net->hard_header_len;
}
-/* Rebuild the faked MAC header. This is called after an ARP
- * (or in future other address resolution) has completed on this
- * sk_buff. We now let ARP fill in the other fields.
- *
- * This routine CANNOT use cached dst->neigh!
- * Really, it is used only when dst->neigh is wrong.
- */
-
-static int ipv4_rebuild_header(struct sk_buff *skb)
+static int fwnet_header_rebuild(struct sk_buff *skb)
{
- struct ipv4_ether_hdr *eth;
+ struct fwnet_header *h = (struct fwnet_header *)skb->data;
- eth = (struct ipv4_ether_hdr *)skb->data;
- if (eth->h_proto == htons(ETH_P_IP))
- return arp_find((unsigned char *)ð->h_dest, skb);
+ if (get_unaligned_be16(&h->h_proto) == ETH_P_IP)
+ return arp_find((unsigned char *)&h->h_dest, skb);
- fw_notify ( "%s: unable to resolve type %04x addresses\n",
- skb->dev->name,ntohs(eth->h_proto) );
+ fw_notify("%s: unable to resolve type %04x addresses\n",
+ skb->dev->name, be16_to_cpu(h->h_proto));
return 0;
}
-static int ipv4_header_cache(const struct neighbour *neigh, struct hh_cache *hh) {
- unsigned short type = hh->hh_type;
- struct net_device *dev;
- struct ipv4_ether_hdr *eth;
+static int fwnet_header_cache(const struct neighbour *neigh,
+ struct hh_cache *hh)
+{
+ struct net_device *net;
+ struct fwnet_header *h;
- if (type == htons(ETH_P_802_3))
+ if (hh->hh_type == cpu_to_be16(ETH_P_802_3))
return -1;
- dev = neigh->dev;
- eth = (struct ipv4_ether_hdr *)((u8 *)hh->hh_data + 16 - sizeof(*eth));
- eth->h_proto = type;
- memcpy(eth->h_dest, neigh->ha, dev->addr_len);
+ net = neigh->dev;
+ h = (struct fwnet_header *)((u8 *)hh->hh_data + 16 - sizeof(*h));
+ h->h_proto = hh->hh_type;
+ memcpy(h->h_dest, neigh->ha, net->addr_len);
+ hh->hh_len = FWNET_HLEN;
- hh->hh_len = IPV4_HLEN;
return 0;
}
/* Called by Address Resolution module to notify changes in address. */
-static void ipv4_header_cache_update(struct hh_cache *hh, const struct net_device *dev, const unsigned char * haddr ) {
- memcpy((u8 *)hh->hh_data + 16 - IPV4_HLEN, haddr, dev->addr_len);
+static void fwnet_header_cache_update(struct hh_cache *hh,
+ const struct net_device *net, const unsigned char *haddr)
+{
+ memcpy((u8 *)hh->hh_data + 16 - FWNET_HLEN, haddr, net->addr_len);
}
-static int ipv4_header_parse(const struct sk_buff *skb, unsigned char *haddr) {
- memcpy(haddr, skb->dev->dev_addr, IPV4_ALEN);
- return IPV4_ALEN;
+static int fwnet_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+ memcpy(haddr, skb->dev->dev_addr, FWNET_ALEN);
+
+ return FWNET_ALEN;
}
-static const struct header_ops ipv4_header_ops = {
- .create = ipv4_header,
- .rebuild = ipv4_rebuild_header,
- .cache = ipv4_header_cache,
- .cache_update = ipv4_header_cache_update,
- .parse = ipv4_header_parse,
+static const struct header_ops fwnet_header_ops = {
+ .create = fwnet_header_create,
+ .rebuild = fwnet_header_rebuild,
+ .cache = fwnet_header_cache,
+ .cache_update = fwnet_header_cache_update,
+ .parse = fwnet_header_parse,
};
-/* ------------------------------------------------------------------ */
-
/* FIXME: is this correct for all cases? */
-static bool ipv4_frag_overlap(struct ipv4_partial_datagram *pd, unsigned offset, unsigned len)
+static bool fwnet_frag_overlap(struct fwnet_partial_datagram *pd,
+ unsigned offset, unsigned len)
{
- struct ipv4_fragment_info *fi;
+ struct fwnet_fragment_info *fi;
unsigned end = offset + len;
- list_for_each_entry(fi, &pd->fragment_info, fragment_info) {
- if (offset < fi->offset + fi->len && end > fi->offset) {
- fw_debug ( "frag_overlap pd %p fi %p (%x@%x) with %x@%x\n", pd, fi, fi->len, fi->offset, len, offset );
+ list_for_each_entry(fi, &pd->fi_list, fi_link)
+ if (offset < fi->offset + fi->len && end > fi->offset)
return true;
- }
- }
- fw_debug ( "frag_overlap %p does not overlap with %x@%x\n", pd, len, offset );
+
return false;
}
/* Assumes that new fragment does not overlap any existing fragments */
-static struct ipv4_fragment_info *ipv4_frag_new ( struct ipv4_partial_datagram *pd, unsigned offset, unsigned len ) {
- struct ipv4_fragment_info *fi, *fi2, *new;
+static struct fwnet_fragment_info *fwnet_frag_new(
+ struct fwnet_partial_datagram *pd, unsigned offset, unsigned len)
+{
+ struct fwnet_fragment_info *fi, *fi2, *new;
struct list_head *list;
- fw_debug ( "frag_new pd %p %x@%x\n", pd, len, offset );
- list = &pd->fragment_info;
- list_for_each_entry(fi, &pd->fragment_info, fragment_info) {
+ list = &pd->fi_list;
+ list_for_each_entry(fi, &pd->fi_list, fi_link) {
if (fi->offset + fi->len == offset) {
/* The new fragment can be tacked on to the end */
/* Did the new fragment plug a hole? */
- fi2 = list_entry(fi->fragment_info.next, struct ipv4_fragment_info, fragment_info);
+ fi2 = list_entry(fi->fi_link.next,
+ struct fwnet_fragment_info, fi_link);
if (fi->offset + fi->len == fi2->offset) {
- fw_debug ( "pd %p: hole filling %p (%x@%x) and %p(%x@%x): now %x@%x\n", pd, fi, fi->len, fi->offset,
- fi2, fi2->len, fi2->offset, fi->len + len + fi2->len, fi->offset );
/* glue fragments together */
fi->len += len + fi2->len;
- list_del(&fi2->fragment_info);
+ list_del(&fi2->fi_link);
kfree(fi2);
} else {
- fw_debug ( "pd %p: extending %p from %x@%x to %x@%x\n", pd, fi, fi->len, fi->offset, fi->len+len, fi->offset );
fi->len += len;
}
+
return fi;
}
if (offset + len == fi->offset) {
/* The new fragment can be tacked on to the beginning */
/* Did the new fragment plug a hole? */
- fi2 = list_entry(fi->fragment_info.prev, struct ipv4_fragment_info, fragment_info);
+ fi2 = list_entry(fi->fi_link.prev,
+ struct fwnet_fragment_info, fi_link);
if (fi2->offset + fi2->len == fi->offset) {
/* glue fragments together */
- fw_debug ( "pd %p: extending %p and merging with %p from %x@%x to %x@%x\n",
- pd, fi2, fi, fi2->len, fi2->offset, fi2->len + fi->len + len, fi2->offset );
fi2->len += fi->len + len;
- list_del(&fi->fragment_info);
+ list_del(&fi->fi_link);
kfree(fi);
+
return fi2;
}
- fw_debug ( "pd %p: extending %p from %x@%x to %x@%x\n", pd, fi, fi->len, fi->offset, offset, fi->len + len );
fi->offset = offset;
fi->len += len;
+
return fi;
}
if (offset > fi->offset + fi->len) {
- list = &fi->fragment_info;
+ list = &fi->fi_link;
break;
}
if (offset + len < fi->offset) {
- list = fi->fragment_info.prev;
+ list = fi->fi_link.prev;
break;
}
}
new = kmalloc(sizeof(*new), GFP_ATOMIC);
if (!new) {
- fw_error ( "out of memory in fragment handling!\n" );
+ fw_error("out of memory\n");
return NULL;
}
new->offset = offset;
new->len = len;
- list_add(&new->fragment_info, list);
- fw_debug ( "pd %p: new frag %p %x@%x\n", pd, new, new->len, new->offset );
- list_for_each_entry( fi, &pd->fragment_info, fragment_info )
- fw_debug ( "fi %p %x@%x\n", fi, fi->len, fi->offset );
+ list_add(&new->fi_link, list);
+
return new;
}
-/* ------------------------------------------------------------------ */
-
-static struct ipv4_partial_datagram *ipv4_pd_new(struct net_device *netdev,
- struct ipv4_node *node, u16 datagram_label, unsigned dg_size, u32 *frag_buf,
- unsigned frag_off, unsigned frag_len) {
- struct ipv4_partial_datagram *new;
- struct ipv4_fragment_info *fi;
+static struct fwnet_partial_datagram *fwnet_pd_new(struct net_device *net,
+ struct fwnet_peer *peer, u16 datagram_label, unsigned dg_size,
+ void *frag_buf, unsigned frag_off, unsigned frag_len)
+{
+ struct fwnet_partial_datagram *new;
+ struct fwnet_fragment_info *fi;
new = kmalloc(sizeof(*new), GFP_ATOMIC);
if (!new)
goto fail;
- INIT_LIST_HEAD(&new->fragment_info);
- fi = ipv4_frag_new ( new, frag_off, frag_len);
- if ( fi == NULL )
+
+ INIT_LIST_HEAD(&new->fi_list);
+ fi = fwnet_frag_new(new, frag_off, frag_len);
+ if (fi == NULL)
goto fail_w_new;
+
new->datagram_label = datagram_label;
new->datagram_size = dg_size;
- new->skb = dev_alloc_skb(dg_size + netdev->hard_header_len + 15);
- if ( new->skb == NULL )
+ new->skb = dev_alloc_skb(dg_size + net->hard_header_len + 15);
+ if (new->skb == NULL)
goto fail_w_fi;
- skb_reserve(new->skb, (netdev->hard_header_len + 15) & ~15);
+
+ skb_reserve(new->skb, (net->hard_header_len + 15) & ~15);
new->pbuf = skb_put(new->skb, dg_size);
memcpy(new->pbuf + frag_off, frag_buf, frag_len);
- list_add_tail(&new->pdg_list, &node->pdg_list);
- fw_debug ( "pd_new: new pd %p { dgl %u, dg_size %u, skb %p, pbuf %p } on node %p\n",
- new, new->datagram_label, new->datagram_size, new->skb, new->pbuf, node );
+ list_add_tail(&new->pd_link, &peer->pd_list);
+
return new;
fail_w_fi:
fail_w_new:
kfree(new);
fail:
- fw_error("ipv4_pd_new: no memory\n");
+ fw_error("out of memory\n");
+
return NULL;
}
-static struct ipv4_partial_datagram *ipv4_pd_find(struct ipv4_node *node, u16 datagram_label) {
- struct ipv4_partial_datagram *pd;
+static struct fwnet_partial_datagram *fwnet_pd_find(struct fwnet_peer *peer,
+ u16 datagram_label)
+{
+ struct fwnet_partial_datagram *pd;
- list_for_each_entry(pd, &node->pdg_list, pdg_list) {
- if ( pd->datagram_label == datagram_label ) {
- fw_debug ( "pd_find(node %p, label %u): pd %p\n", node, datagram_label, pd );
+ list_for_each_entry(pd, &peer->pd_list, pd_link)
+ if (pd->datagram_label == datagram_label)
return pd;
- }
- }
- fw_debug ( "pd_find(node %p, label %u) no entry\n", node, datagram_label );
+
return NULL;
}
-static void ipv4_pd_delete ( struct ipv4_partial_datagram *old ) {
- struct ipv4_fragment_info *fi, *n;
+static void fwnet_pd_delete(struct fwnet_partial_datagram *old)
+{
+ struct fwnet_fragment_info *fi, *n;
- fw_debug ( "pd_delete %p\n", old );
- list_for_each_entry_safe(fi, n, &old->fragment_info, fragment_info) {
- fw_debug ( "Freeing fi %p\n", fi );
+ list_for_each_entry_safe(fi, n, &old->fi_list, fi_link)
kfree(fi);
- }
- list_del(&old->pdg_list);
+
+ list_del(&old->pd_link);
dev_kfree_skb_any(old->skb);
kfree(old);
}
-static bool ipv4_pd_update ( struct ipv4_node *node, struct ipv4_partial_datagram *pd,
- u32 *frag_buf, unsigned frag_off, unsigned frag_len) {
- fw_debug ( "pd_update node %p, pd %p, frag_buf %p, %x@%x\n", node, pd, frag_buf, frag_len, frag_off );
- if ( ipv4_frag_new ( pd, frag_off, frag_len ) == NULL)
+static bool fwnet_pd_update(struct fwnet_peer *peer,
+ struct fwnet_partial_datagram *pd, void *frag_buf,
+ unsigned frag_off, unsigned frag_len)
+{
+ if (fwnet_frag_new(pd, frag_off, frag_len) == NULL)
return false;
+
memcpy(pd->pbuf + frag_off, frag_buf, frag_len);
/*
* Move list entry to beginnig of list so that oldest partial
* datagrams percolate to the end of the list
*/
- list_move_tail(&pd->pdg_list, &node->pdg_list);
- fw_debug ( "New pd list:\n" );
- list_for_each_entry ( pd, &node->pdg_list, pdg_list ) {
- fw_debug ( "pd %p\n", pd );
- }
+ list_move_tail(&pd->pd_link, &peer->pd_list);
+
return true;
}
-static bool ipv4_pd_is_complete ( struct ipv4_partial_datagram *pd ) {
- struct ipv4_fragment_info *fi;
- bool ret;
+static bool fwnet_pd_is_complete(struct fwnet_partial_datagram *pd)
+{
+ struct fwnet_fragment_info *fi;
- fi = list_entry(pd->fragment_info.next, struct ipv4_fragment_info, fragment_info);
+ fi = list_entry(pd->fi_list.next, struct fwnet_fragment_info, fi_link);
- ret = (fi->len == pd->datagram_size);
- 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" );
- return ret;
+ return fi->len == pd->datagram_size;
}
-/* ------------------------------------------------------------------ */
+static int fwnet_peer_new(struct fw_card *card, struct fw_device *device)
+{
+ struct fwnet_peer *peer;
-static int ipv4_node_new ( struct fw_card *card, struct fw_device *device ) {
- struct ipv4_node *node;
+ peer = kmalloc(sizeof(*peer), GFP_KERNEL);
+ if (!peer) {
+ fw_error("out of memory\n");
- node = kmalloc ( sizeof(*node), GFP_KERNEL );
- if ( ! node ) {
- fw_error ( "allocate new node failed\n" );
return -ENOMEM;
}
- node->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
- node->fifo = INVALID_FIFO_ADDR;
- INIT_LIST_HEAD(&node->pdg_list);
- spin_lock_init(&node->pdg_lock);
- node->pdg_size = 0;
- node->generation = device->generation;
+ peer->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
+ peer->fifo = FWNET_NO_FIFO_ADDR;
+ INIT_LIST_HEAD(&peer->pd_list);
+ spin_lock_init(&peer->pdg_lock);
+ peer->pdg_size = 0;
+ peer->generation = device->generation;
rmb();
- node->nodeid = device->node_id;
+ peer->node_id = device->node_id;
/* FIXME what should it really be? */
- node->max_payload = S100_BUFFER_SIZE - IPV4_UNFRAG_HDR_SIZE;
- node->datagram_label = 0U;
- node->xmt_speed = device->max_speed;
- list_add_tail ( &node->ipv4_nodes, &card->ipv4_nodes );
- fw_debug ( "node_new: %p { guid %016llx, generation %u, nodeid %x, max_payload %x, xmt_speed %x } added\n",
- node, (unsigned long long)node->guid, node->generation, node->nodeid, node->max_payload, node->xmt_speed );
+ peer->max_payload = IEEE1394_MAX_PAYLOAD_S100 - RFC2374_UNFRAG_HDR_SIZE;
+ peer->datagram_label = 0U;
+ peer->xmt_speed = device->max_speed;
+ list_add_tail(&peer->peer_link, &card->peer_list);
+
return 0;
}
-static struct ipv4_node *ipv4_node_find_by_guid(struct ipv4_priv *priv, u64 guid) {
- struct ipv4_node *node;
+/* FIXME caller must take the lock, or peer needs to be reference-counted */
+static struct fwnet_peer *fwnet_peer_find_by_guid(struct fwnet_device *dev,
+ u64 guid)
+{
+ struct fwnet_peer *p, *peer = NULL;
unsigned long flags;
- spin_lock_irqsave(&priv->lock, flags);
- list_for_each_entry(node, &priv->card->ipv4_nodes, ipv4_nodes)
- if (node->guid == guid) {
- /* FIXME: lock the node first? */
- spin_unlock_irqrestore ( &priv->lock, flags );
- fw_debug ( "node_find_by_guid (%016llx) found %p\n", (unsigned long long)guid, node );
- return node;
+ spin_lock_irqsave(&dev->lock, flags);
+ list_for_each_entry(p, &dev->card->peer_list, peer_link)
+ if (p->guid == guid) {
+ peer = p;
+ break;
}
+ spin_unlock_irqrestore(&dev->lock, flags);
- spin_unlock_irqrestore ( &priv->lock, flags );
- fw_debug ( "node_find_by_guid (%016llx) not found\n", (unsigned long long)guid );
- return NULL;
+ return peer;
}
-static struct ipv4_node *ipv4_node_find_by_nodeid(struct ipv4_priv *priv, u16 nodeid) {
- struct ipv4_node *node;
+/* FIXME caller must take the lock, or peer needs to be reference-counted */
+/* FIXME node_id doesn't mean anything without generation */
+static struct fwnet_peer *fwnet_peer_find_by_node_id(struct fwnet_device *dev,
+ u16 node_id)
+{
+ struct fwnet_peer *p, *peer = NULL;
unsigned long flags;
- spin_lock_irqsave(&priv->lock, flags);
- list_for_each_entry(node, &priv->card->ipv4_nodes, ipv4_nodes)
- if (node->nodeid == nodeid) {
- /* FIXME: lock the node first? */
- spin_unlock_irqrestore ( &priv->lock, flags );
- fw_debug ( "node_find_by_nodeid (%x) found %p\n", nodeid, node );
- return node;
+ spin_lock_irqsave(&dev->lock, flags);
+ list_for_each_entry(p, &dev->card->peer_list, peer_link)
+ if (p->node_id == node_id) {
+ peer = p;
+ break;
}
- fw_debug ( "node_find_by_nodeid (%x) not found\n", nodeid );
- spin_unlock_irqrestore ( &priv->lock, flags );
- return NULL;
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return peer;
}
-/* This is only complicated because we can't assume priv exists */
-static void ipv4_node_delete ( struct fw_card *card, struct fw_device *device ) {
- struct net_device *netdev;
- struct ipv4_priv *priv;
- struct ipv4_node *node;
+/* FIXME */
+static void fwnet_peer_delete(struct fw_card *card, struct fw_device *device)
+{
+ struct net_device *net;
+ struct fwnet_device *dev;
+ struct fwnet_peer *peer;
u64 guid;
unsigned long flags;
- struct ipv4_partial_datagram *pd, *pd_next;
+ struct fwnet_partial_datagram *pd, *pd_next;
guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
- netdev = card->netdev;
- if ( netdev )
- priv = netdev_priv ( netdev );
+ net = card->netdev;
+ if (net)
+ dev = netdev_priv(net);
else
- priv = NULL;
- if ( priv )
- spin_lock_irqsave ( &priv->lock, flags );
- list_for_each_entry( node, &card->ipv4_nodes, ipv4_nodes ) {
- if ( node->guid == guid ) {
- list_del ( &node->ipv4_nodes );
- list_for_each_entry_safe( pd, pd_next, &node->pdg_list, pdg_list )
- ipv4_pd_delete ( pd );
+ dev = NULL;
+ if (dev)
+ spin_lock_irqsave(&dev->lock, flags);
+
+ list_for_each_entry(peer, &card->peer_list, peer_link) {
+ if (peer->guid == guid) {
+ list_del(&peer->peer_link);
+ list_for_each_entry_safe(pd, pd_next, &peer->pd_list,
+ pd_link)
+ fwnet_pd_delete(pd);
break;
}
}
- if ( priv )
- spin_unlock_irqrestore ( &priv->lock, flags );
+ if (dev)
+ spin_unlock_irqrestore(&dev->lock, flags);
}
-/* ------------------------------------------------------------------ */
-
-
-static int ipv4_finish_incoming_packet ( struct net_device *netdev,
- struct sk_buff *skb, u16 source_node_id, bool is_broadcast, u16 ether_type ) {
- struct ipv4_priv *priv;
- static u64 broadcast_hw = ~0ULL;
+static int fwnet_finish_incoming_packet(struct net_device *net,
+ struct sk_buff *skb, u16 source_node_id,
+ bool is_broadcast, u16 ether_type)
+{
+ struct fwnet_device *dev;
+ static const __be64 broadcast_hw = cpu_to_be64(~0ULL);
int status;
- u64 guid;
+ __be64 guid;
- fw_debug ( "ipv4_finish_incoming_packet(%p, %p, %x, %s, %x\n",
- netdev, skb, source_node_id, is_broadcast ? "true" : "false", ether_type );
- priv = netdev_priv(netdev);
+ dev = netdev_priv(net);
/* Write metadata, and then pass to the receive level */
- skb->dev = netdev;
+ skb->dev = net;
skb->ip_summed = CHECKSUM_UNNECESSARY; /* don't check it */
/*
* about the sending machine.
*/
if (ether_type == ETH_P_ARP) {
- struct ipv4_arp *arp1394;
+ struct rfc2734_arp *arp1394;
struct arphdr *arp;
unsigned char *arp_ptr;
u64 fifo_addr;
+ u64 peer_guid;
u8 max_rec;
u8 sspd;
u16 max_payload;
- struct ipv4_node *node;
- static const u16 ipv4_speed_to_max_payload[] = {
+ struct fwnet_peer *peer;
+ static const u16 fwnet_speed_to_max_payload[] = {
/* S100, S200, S400, S800, S1600, S3200 */
512, 1024, 2048, 4096, 4096, 4096
};
- /* fw_debug ( "ARP packet\n" ); */
- arp1394 = (struct ipv4_arp *)skb->data;
+ arp1394 = (struct rfc2734_arp *)skb->data;
arp = (struct arphdr *)skb->data;
arp_ptr = (unsigned char *)(arp + 1);
- fifo_addr = (u64)ntohs(arp1394->fifo_hi) << 32 |
- ntohl(arp1394->fifo_lo);
- max_rec = priv->card->max_receive;
- if ( arp1394->max_rec < max_rec )
+ fifo_addr = (u64)ntohs(arp1394->fifo_hi) << 32
+ | ntohl(arp1394->fifo_lo);
+ max_rec = dev->card->max_receive;
+ if (arp1394->max_rec < max_rec)
max_rec = arp1394->max_rec;
sspd = arp1394->sspd;
- /*
- * Sanity check. MacOSX seems to be sending us 131 in this
- * field (atleast on my Panther G5). Not sure why.
- */
- if (sspd > 5 ) {
- fw_notify ( "sspd %x out of range\n", sspd );
+ /* Sanity check. OS X 10.3 PPC reportedly sends 131. */
+ if (sspd > SCODE_3200) {
+ fw_notify("sspd %x out of range\n", sspd);
sspd = 0;
}
- max_payload = min(ipv4_speed_to_max_payload[sspd],
- (u16)(1 << (max_rec + 1))) - IPV4_UNFRAG_HDR_SIZE;
+ max_payload = min(fwnet_speed_to_max_payload[sspd],
+ (u16)(1 << (max_rec + 1))) - RFC2374_UNFRAG_HDR_SIZE;
- guid = be64_to_cpu(get_unaligned(&arp1394->s_uniq_id));
- node = ipv4_node_find_by_guid(priv, guid);
- if (!node) {
- fw_notify ( "No node for ARP packet from %llx\n", guid );
+ peer_guid = get_unaligned_be64(&arp1394->s_uniq_id);
+ peer = fwnet_peer_find_by_guid(dev, peer_guid);
+ if (!peer) {
+ fw_notify("No peer for ARP packet from %016llx\n",
+ (unsigned long long)peer_guid);
goto failed_proto;
}
- if ( node->nodeid != source_node_id || node->generation != priv->card->generation ) {
- fw_notify ( "Internal error: node->nodeid (%x) != soucre_node_id (%x) or node->generation (%x) != priv->card->generation(%x)\n",
- node->nodeid, source_node_id, node->generation, priv->card->generation );
- node->nodeid = source_node_id;
- node->generation = priv->card->generation;
+
+ /* FIXME don't use card->generation */
+ if (peer->node_id != source_node_id ||
+ peer->generation != dev->card->generation) {
+ fw_notify("Internal error: peer->node_id (%x) != "
+ "source_node_id (%x) or peer->generation (%x)"
+ " != dev->card->generation(%x)\n",
+ peer->node_id, source_node_id,
+ peer->generation, dev->card->generation);
+ peer->node_id = source_node_id;
+ peer->generation = dev->card->generation;
}
/* FIXME: for debugging */
- if ( sspd > SCODE_400 )
+ if (sspd > SCODE_400)
sspd = SCODE_400;
/* Update our speed/payload/fifo_offset table */
/*
* FIXME: this does not handle cases where two high-speed endpoints must use a slower speed because of
* a lower speed hub between them. We need to look at the actual topology map here.
*/
- fw_debug ( "Setting node %p fifo %llx (was %llx), max_payload %x (was %x), speed %x (was %x)\n",
- node, fifo_addr, node->fifo, max_payload, node->max_payload, sspd, node->xmt_speed );
- node->fifo = fifo_addr;
- node->max_payload = max_payload;
+ peer->fifo = fifo_addr;
+ peer->max_payload = max_payload;
/*
* Only allow speeds to go down from their initial value.
- * Otherwise a local node that can only do S400 or slower may
- * be told to transmit at S800 to a faster remote node.
+ * Otherwise a local peer that can only do S400 or slower may
+ * be told to transmit at S800 to a faster remote peer.
*/
- if ( node->xmt_speed > sspd )
- node->xmt_speed = sspd;
+ if (peer->xmt_speed > sspd)
+ peer->xmt_speed = sspd;
/*
* Now that we're done with the 1394 specific stuff, we'll
*/
arp->ar_hln = 8;
- arp_ptr += arp->ar_hln; /* skip over sender unique id */
- *(u32 *)arp_ptr = arp1394->sip; /* move sender IP addr */
- arp_ptr += arp->ar_pln; /* skip over sender IP addr */
+ /* skip over sender unique id */
+ arp_ptr += arp->ar_hln;
+ /* move sender IP addr */
+ put_unaligned(arp1394->sip, (u32 *)arp_ptr);
+ /* skip over sender IP addr */
+ arp_ptr += arp->ar_pln;
if (arp->ar_op == htons(ARPOP_REQUEST))
memset(arp_ptr, 0, sizeof(u64));
else
- memcpy(arp_ptr, netdev->dev_addr, sizeof(u64));
+ memcpy(arp_ptr, net->dev_addr, sizeof(u64));
}
/* Now add the ethernet header. */
- guid = cpu_to_be64(priv->card->guid);
- if (dev_hard_header(skb, netdev, ether_type, is_broadcast ? &broadcast_hw : &guid, NULL,
- skb->len) >= 0) {
- struct ipv4_ether_hdr *eth;
+ guid = cpu_to_be64(dev->card->guid);
+ if (dev_hard_header(skb, net, ether_type,
+ is_broadcast ? &broadcast_hw : &guid,
+ NULL, skb->len) >= 0) {
+ struct fwnet_header *eth;
u16 *rawp;
__be16 protocol;
skb_reset_mac_header(skb);
skb_pull(skb, sizeof(*eth));
- eth = ipv4_ether_hdr(skb);
+ eth = (struct fwnet_header *)skb_mac_header(skb);
if (*eth->h_dest & 1) {
- if (memcmp(eth->h_dest, netdev->broadcast, netdev->addr_len) == 0) {
- fw_debug ( "Broadcast\n" );
+ if (memcmp(eth->h_dest, net->broadcast,
+ net->addr_len) == 0)
skb->pkt_type = PACKET_BROADCAST;
- }
#if 0
else
skb->pkt_type = PACKET_MULTICAST;
#endif
} else {
- if (memcmp(eth->h_dest, netdev->dev_addr, netdev->addr_len)) {
+ if (memcmp(eth->h_dest, net->dev_addr, net->addr_len)) {
u64 a1, a2;
- memcpy ( &a1, eth->h_dest, sizeof(u64));
- memcpy ( &a2, netdev->dev_addr, sizeof(u64));
- fw_debug ( "Otherhost %llx %llx %x\n", a1, a2, netdev->addr_len );
+ memcpy(&a1, eth->h_dest, sizeof(u64));
+ memcpy(&a2, net->dev_addr, sizeof(u64));
skb->pkt_type = PACKET_OTHERHOST;
}
}
if (ntohs(eth->h_proto) >= 1536) {
- fw_debug ( " proto %x %x\n", eth->h_proto, ntohs(eth->h_proto) );
protocol = eth->h_proto;
} else {
rawp = (u16 *)skb->data;
- if (*rawp == 0xFFFF) {
- fw_debug ( "proto 802_3\n" );
+ if (*rawp == 0xffff)
protocol = htons(ETH_P_802_3);
- } else {
- fw_debug ( "proto 802_2\n" );
+ else
protocol = htons(ETH_P_802_2);
- }
}
skb->protocol = protocol;
}
status = netif_rx(skb);
- if ( status == NET_RX_DROP) {
- netdev->stats.rx_errors++;
- netdev->stats.rx_dropped++;
+ if (status == NET_RX_DROP) {
+ net->stats.rx_errors++;
+ net->stats.rx_dropped++;
} else {
- netdev->stats.rx_packets++;
- netdev->stats.rx_bytes += skb->len;
+ net->stats.rx_packets++;
+ net->stats.rx_bytes += skb->len;
}
- if (netif_queue_stopped(netdev))
- netif_wake_queue(netdev);
+ if (netif_queue_stopped(net))
+ netif_wake_queue(net);
+
return 0;
failed_proto:
- netdev->stats.rx_errors++;
- netdev->stats.rx_dropped++;
+ net->stats.rx_errors++;
+ net->stats.rx_dropped++;
+
dev_kfree_skb_any(skb);
- if (netif_queue_stopped(netdev))
- netif_wake_queue(netdev);
- netdev->last_rx = jiffies;
+ if (netif_queue_stopped(net))
+ netif_wake_queue(net);
+
+ net->last_rx = jiffies;
+
return 0;
}
-/* ------------------------------------------------------------------ */
-
-static int ipv4_incoming_packet ( struct ipv4_priv *priv, u32 *buf, int len, u16 source_node_id, bool is_broadcast ) {
+static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
+ u16 source_node_id, bool is_broadcast)
+{
struct sk_buff *skb;
- struct net_device *netdev;
- struct ipv4_hdr hdr;
+ struct net_device *net;
+ struct rfc2734_header hdr;
unsigned lf;
unsigned long flags;
- struct ipv4_node *node;
- struct ipv4_partial_datagram *pd;
+ struct fwnet_peer *peer;
+ struct fwnet_partial_datagram *pd;
int fg_off;
int dg_size;
u16 datagram_label;
int retval;
u16 ether_type;
- fw_debug ( "ipv4_incoming_packet(%p, %p, %d, %x, %s)\n", priv, buf, len, source_node_id, is_broadcast ? "true" : "false" );
- netdev = priv->card->netdev;
+ net = dev->card->netdev;
- hdr.w0 = ntohl(buf[0]);
- lf = ipv4_get_hdr_lf(&hdr);
- if ( lf == IPV4_HDR_UNFRAG ) {
+ hdr.w0 = be32_to_cpu(buf[0]);
+ lf = fwnet_get_hdr_lf(&hdr);
+ if (lf == RFC2374_HDR_UNFRAG) {
/*
* An unfragmented datagram has been received by the ieee1394
* bus. Build an skbuff around it so we can pass it to the
* high level network layer.
*/
- ether_type = ipv4_get_hdr_ether_type(&hdr);
- fw_debug ( "header w0 = %x, lf = %x, ether_type = %x\n", hdr.w0, lf, ether_type );
+ ether_type = fwnet_get_hdr_ether_type(&hdr);
buf++;
- len -= IPV4_UNFRAG_HDR_SIZE;
+ len -= RFC2374_UNFRAG_HDR_SIZE;
- skb = dev_alloc_skb(len + netdev->hard_header_len + 15);
+ skb = dev_alloc_skb(len + net->hard_header_len + 15);
if (unlikely(!skb)) {
- fw_error ( "Out of memory for incoming packet\n");
- netdev->stats.rx_dropped++;
+ fw_error("out of memory\n");
+ net->stats.rx_dropped++;
+
return -1;
}
- skb_reserve(skb, (netdev->hard_header_len + 15) & ~15);
- memcpy(skb_put(skb, len), buf, len );
- return ipv4_finish_incoming_packet(netdev, skb, source_node_id, is_broadcast, ether_type );
+ skb_reserve(skb, (net->hard_header_len + 15) & ~15);
+ memcpy(skb_put(skb, len), buf, len);
+
+ return fwnet_finish_incoming_packet(net, skb, source_node_id,
+ is_broadcast, ether_type);
}
/* A datagram fragment has been received, now the fun begins. */
hdr.w1 = ntohl(buf[1]);
- buf +=2;
- len -= IPV4_FRAG_HDR_SIZE;
- if ( lf ==IPV4_HDR_FIRSTFRAG ) {
- ether_type = ipv4_get_hdr_ether_type(&hdr);
+ buf += 2;
+ len -= RFC2374_FRAG_HDR_SIZE;
+ if (lf == RFC2374_HDR_FIRSTFRAG) {
+ ether_type = fwnet_get_hdr_ether_type(&hdr);
fg_off = 0;
} else {
- fg_off = ipv4_get_hdr_fg_off(&hdr);
- ether_type = 0; /* Shut up compiler! */
+ ether_type = 0;
+ fg_off = fwnet_get_hdr_fg_off(&hdr);
}
- datagram_label = ipv4_get_hdr_dgl(&hdr);
- dg_size = ipv4_get_hdr_dg_size(&hdr); /* ??? + 1 */
- 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 );
- node = ipv4_node_find_by_nodeid ( priv, source_node_id);
- spin_lock_irqsave(&node->pdg_lock, flags);
- pd = ipv4_pd_find( node, datagram_label );
+ datagram_label = fwnet_get_hdr_dgl(&hdr);
+ dg_size = fwnet_get_hdr_dg_size(&hdr); /* ??? + 1 */
+ peer = fwnet_peer_find_by_node_id(dev, source_node_id);
+
+ spin_lock_irqsave(&peer->pdg_lock, flags);
+
+ pd = fwnet_pd_find(peer, datagram_label);
if (pd == NULL) {
- while ( node->pdg_size >= ipv4_mpd ) {
+ while (peer->pdg_size >= FWNET_MAX_FRAGMENTS) {
/* remove the oldest */
- ipv4_pd_delete ( list_first_entry(&node->pdg_list, struct ipv4_partial_datagram, pdg_list) );
- node->pdg_size--;
+ fwnet_pd_delete(list_first_entry(&peer->pd_list,
+ struct fwnet_partial_datagram, pd_link));
+ peer->pdg_size--;
}
- pd = ipv4_pd_new ( netdev, node, datagram_label, dg_size,
- buf, fg_off, len);
- if ( pd == NULL) {
+ pd = fwnet_pd_new(net, peer, datagram_label,
+ dg_size, buf, fg_off, len);
+ if (pd == NULL) {
retval = -ENOMEM;
goto bad_proto;
}
- node->pdg_size++;
+ peer->pdg_size++;
} else {
- if (ipv4_frag_overlap(pd, fg_off, len) || pd->datagram_size != dg_size) {
+ if (fwnet_frag_overlap(pd, fg_off, len) ||
+ pd->datagram_size != dg_size) {
/*
* Differing datagram sizes or overlapping fragments,
- * Either way the remote machine is playing silly buggers
- * with us: obliterate the old datagram and start a new one.
+ * discard old datagram and start a new one.
*/
- ipv4_pd_delete ( pd );
- pd = ipv4_pd_new ( netdev, node, datagram_label,
- dg_size, buf, fg_off, len);
- if ( pd == NULL ) {
+ fwnet_pd_delete(pd);
+ pd = fwnet_pd_new(net, peer, datagram_label,
+ dg_size, buf, fg_off, len);
+ if (pd == NULL) {
retval = -ENOMEM;
- node->pdg_size--;
+ peer->pdg_size--;
goto bad_proto;
}
} else {
- bool worked;
-
- worked = ipv4_pd_update ( node, pd,
- buf, fg_off, len );
- if ( ! worked ) {
+ if (!fwnet_pd_update(peer, pd, buf, fg_off, len)) {
/*
* Couldn't save off fragment anyway
* so might as well obliterate the
* datagram now.
*/
- ipv4_pd_delete ( pd );
- node->pdg_size--;
+ fwnet_pd_delete(pd);
+ peer->pdg_size--;
goto bad_proto;
}
}
} /* new datagram or add to existing one */
- if ( lf == IPV4_HDR_FIRSTFRAG )
+ if (lf == RFC2374_HDR_FIRSTFRAG)
pd->ether_type = ether_type;
- if ( ipv4_pd_is_complete ( pd ) ) {
+
+ if (fwnet_pd_is_complete(pd)) {
ether_type = pd->ether_type;
- node->pdg_size--;
+ peer->pdg_size--;
skb = skb_get(pd->skb);
- ipv4_pd_delete ( pd );
- spin_unlock_irqrestore(&node->pdg_lock, flags);
- return ipv4_finish_incoming_packet ( netdev, skb, source_node_id, false, ether_type );
+ fwnet_pd_delete(pd);
+
+ spin_unlock_irqrestore(&peer->pdg_lock, flags);
+
+ return fwnet_finish_incoming_packet(net, skb, source_node_id,
+ false, ether_type);
}
/*
* Datagram is not complete, we're done for the
* moment.
*/
- spin_unlock_irqrestore(&node->pdg_lock, flags);
+ spin_unlock_irqrestore(&peer->pdg_lock, flags);
+
return 0;
bad_proto:
- spin_unlock_irqrestore(&node->pdg_lock, flags);
- if (netif_queue_stopped(netdev))
- netif_wake_queue(netdev);
+ spin_unlock_irqrestore(&peer->pdg_lock, flags);
+
+ if (netif_queue_stopped(net))
+ netif_wake_queue(net);
+
return 0;
}
-static void ipv4_receive_packet ( struct fw_card *card, struct fw_request *r,
- int tcode, int destination, int source, int generation, int speed,
- unsigned long long offset, void *payload, size_t length, void *callback_data ) {
- struct ipv4_priv *priv;
+static void fwnet_receive_packet(struct fw_card *card, struct fw_request *r,
+ int tcode, int destination, int source, int generation,
+ int speed, unsigned long long offset, void *payload,
+ size_t length, void *callback_data)
+{
+ struct fwnet_device *dev;
int status;
- fw_debug ( "ipv4_receive_packet(%p,%p,%x,%x,%x,%x,%x,%llx,%p,%lx,%p)\n",
- card, r, tcode, destination, source, generation, speed, offset, payload,
- (unsigned long)length, callback_data);
- print_hex_dump ( KERN_DEBUG, "header: ", DUMP_PREFIX_OFFSET, 32, 1, payload, length, false );
- priv = callback_data;
- if ( tcode != TCODE_WRITE_BLOCK_REQUEST
- || destination != card->node_id
- || generation != card->generation
- || offset != priv->handler.offset ) {
+ dev = callback_data;
+ if (tcode != TCODE_WRITE_BLOCK_REQUEST
+ || destination != card->node_id /* <- FIXME */
+ || generation != card->generation /* <- FIXME */
+ || offset != dev->handler.offset) {
fw_send_response(card, r, RCODE_CONFLICT_ERROR);
- fw_debug("Conflict error card node_id=%x, card generation=%x, local offset %llx\n",
- card->node_id, card->generation, (unsigned long long)priv->handler.offset );
+
return;
}
- status = ipv4_incoming_packet ( priv, payload, length, source, false );
- if ( status != 0 ) {
- fw_error ( "Incoming packet failure\n" );
- fw_send_response ( card, r, RCODE_CONFLICT_ERROR );
+
+ status = fwnet_incoming_packet(dev, payload, length, source, false);
+ if (status != 0) {
+ fw_error("Incoming packet failure\n");
+ fw_send_response(card, r, RCODE_CONFLICT_ERROR);
+
return;
}
- fw_send_response ( card, r, RCODE_COMPLETE );
+
+ fw_send_response(card, r, RCODE_COMPLETE);
}
-static void ipv4_receive_broadcast(struct fw_iso_context *context, u32 cycle,
- size_t header_length, void *header, void *data) {
- struct ipv4_priv *priv;
+static void fwnet_receive_broadcast(struct fw_iso_context *context,
+ u32 cycle, size_t header_length, void *header, void *data)
+{
+ struct fwnet_device *dev;
struct fw_iso_packet packet;
struct fw_card *card;
- u16 *hdr_ptr;
- u32 *buf_ptr;
+ __be16 *hdr_ptr;
+ __be32 *buf_ptr;
int retval;
u32 length;
u16 source_node_id;
unsigned long offset;
unsigned long flags;
- 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 );
- print_hex_dump ( KERN_DEBUG, "header: ", DUMP_PREFIX_OFFSET, 32, 1, header, header_length, false );
- priv = data;
- card = priv->card;
+ dev = data;
+ card = dev->card;
hdr_ptr = header;
- length = ntohs(hdr_ptr[0]);
- spin_lock_irqsave(&priv->lock,flags);
- offset = priv->rcv_buffer_size * priv->broadcast_rcv_next_ptr;
- buf_ptr = priv->broadcast_rcv_buffer_ptrs[priv->broadcast_rcv_next_ptr++];
- if ( priv->broadcast_rcv_next_ptr == priv->num_broadcast_rcv_ptrs )
- priv->broadcast_rcv_next_ptr = 0;
- spin_unlock_irqrestore(&priv->lock,flags);
- fw_debug ( "length %u at %p\n", length, buf_ptr );
- print_hex_dump ( KERN_DEBUG, "buffer: ", DUMP_PREFIX_OFFSET, 32, 1, buf_ptr, length, false );
+ length = be16_to_cpup(hdr_ptr);
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ offset = dev->rcv_buffer_size * dev->broadcast_rcv_next_ptr;
+ buf_ptr = dev->broadcast_rcv_buffer_ptrs[dev->broadcast_rcv_next_ptr++];
+ if (dev->broadcast_rcv_next_ptr == dev->num_broadcast_rcv_ptrs)
+ dev->broadcast_rcv_next_ptr = 0;
+
+ spin_unlock_irqrestore(&dev->lock, flags);
specifier_id = (be32_to_cpu(buf_ptr[0]) & 0xffff) << 8
| (be32_to_cpu(buf_ptr[1]) & 0xff000000) >> 24;
- ver = be32_to_cpu(buf_ptr[1]) & 0xFFFFFF;
+ ver = be32_to_cpu(buf_ptr[1]) & 0xffffff;
source_node_id = be32_to_cpu(buf_ptr[0]) >> 16;
- /* fw_debug ( "source %x SpecID %x ver %x\n", source_node_id, specifier_id, ver ); */
- if ( specifier_id == IPV4_GASP_SPECIFIER_ID && ver == IPV4_GASP_VERSION ) {
+
+ if (specifier_id == IANA_SPECIFIER_ID && ver == RFC2734_SW_VERSION) {
buf_ptr += 2;
- length -= IPV4_GASP_OVERHEAD;
- ipv4_incoming_packet(priv, buf_ptr, length, source_node_id, true);
- } else
- fw_debug ( "Ignoring packet: not GASP\n" );
- packet.payload_length = priv->rcv_buffer_size;
+ length -= IEEE1394_GASP_HDR_SIZE;
+ fwnet_incoming_packet(dev, buf_ptr, length,
+ source_node_id, true);
+ }
+
+ packet.payload_length = dev->rcv_buffer_size;
packet.interrupt = 1;
packet.skip = 0;
packet.tag = 3;
packet.sy = 0;
- packet.header_length = IPV4_GASP_OVERHEAD;
- spin_lock_irqsave(&priv->lock,flags);
- retval = fw_iso_context_queue ( priv->broadcast_rcv_context, &packet,
- &priv->broadcast_rcv_buffer, offset );
- spin_unlock_irqrestore(&priv->lock,flags);
- if ( retval < 0 )
- fw_error ( "requeue failed\n" );
-}
+ packet.header_length = IEEE1394_GASP_HDR_SIZE;
+
+ spin_lock_irqsave(&dev->lock, flags);
-static void debug_ptask ( struct ipv4_packet_task *ptask ) {
- static const char *tx_types[] = { "Unknown", "GASP", "Write" };
-
- fw_debug ( "packet %p { hdr { w0 %x w1 %x }, skb %p, priv %p,"
- " tx_type %s, outstanding_pkts %d, max_payload %x, fifo %llx,"
- " speed %x, dest_node %x, generation %x }\n",
- ptask, ptask->hdr.w0, ptask->hdr.w1, ptask->skb, ptask->priv,
- ptask->tx_type > IPV4_WRREQ ? "Invalid" : tx_types[ptask->tx_type],
- ptask->outstanding_pkts, ptask->max_payload,
- ptask->fifo_addr, ptask->speed, ptask->dest_node, ptask->generation );
- print_hex_dump ( KERN_DEBUG, "packet :", DUMP_PREFIX_OFFSET, 32, 1,
- ptask->skb->data, ptask->skb->len, false );
+ retval = fw_iso_context_queue(dev->broadcast_rcv_context, &packet,
+ &dev->broadcast_rcv_buffer, offset);
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ if (retval < 0)
+ fw_error("requeue failed\n");
}
-static void ipv4_transmit_packet_done ( struct ipv4_packet_task *ptask ) {
- struct ipv4_priv *priv;
+static struct kmem_cache *fwnet_packet_task_cache;
+
+static int fwnet_send_packet(struct fwnet_packet_task *ptask);
+
+static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
+{
+ struct fwnet_device *dev;
unsigned long flags;
- priv = ptask->priv;
- spin_lock_irqsave ( &priv->lock, flags );
- list_del ( &ptask->packet_list );
- spin_unlock_irqrestore ( &priv->lock, flags );
- ptask->outstanding_pkts--;
- if ( ptask->outstanding_pkts > 0 ) {
+ dev = ptask->dev;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ list_del(&ptask->pt_link);
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ ptask->outstanding_pkts--; /* FIXME access inside lock */
+
+ if (ptask->outstanding_pkts > 0) {
u16 dg_size;
u16 fg_off;
u16 datagram_label;
struct sk_buff *skb;
/* Update the ptask to point to the next fragment and send it */
- lf = ipv4_get_hdr_lf(&ptask->hdr);
+ lf = fwnet_get_hdr_lf(&ptask->hdr);
switch (lf) {
- case IPV4_HDR_LASTFRAG:
- case IPV4_HDR_UNFRAG:
+ case RFC2374_HDR_LASTFRAG:
+ case RFC2374_HDR_UNFRAG:
default:
- fw_error ( "Outstanding packet %x lf %x, header %x,%x\n", ptask->outstanding_pkts, lf, ptask->hdr.w0, ptask->hdr.w1 );
+ fw_error("Outstanding packet %x lf %x, header %x,%x\n",
+ ptask->outstanding_pkts, lf, ptask->hdr.w0,
+ ptask->hdr.w1);
BUG();
- case IPV4_HDR_FIRSTFRAG:
+ case RFC2374_HDR_FIRSTFRAG:
/* Set frag type here for future interior fragments */
- dg_size = ipv4_get_hdr_dg_size(&ptask->hdr);
- fg_off = ptask->max_payload - IPV4_FRAG_HDR_SIZE;
- datagram_label = ipv4_get_hdr_dgl(&ptask->hdr);
+ dg_size = fwnet_get_hdr_dg_size(&ptask->hdr);
+ fg_off = ptask->max_payload - RFC2374_FRAG_HDR_SIZE;
+ datagram_label = fwnet_get_hdr_dgl(&ptask->hdr);
break;
- case IPV4_HDR_INTFRAG:
- dg_size = ipv4_get_hdr_dg_size(&ptask->hdr);
- fg_off = ipv4_get_hdr_fg_off(&ptask->hdr) + ptask->max_payload - IPV4_FRAG_HDR_SIZE;
- datagram_label = ipv4_get_hdr_dgl(&ptask->hdr);
+ case RFC2374_HDR_INTFRAG:
+ dg_size = fwnet_get_hdr_dg_size(&ptask->hdr);
+ fg_off = fwnet_get_hdr_fg_off(&ptask->hdr)
+ + ptask->max_payload - RFC2374_FRAG_HDR_SIZE;
+ datagram_label = fwnet_get_hdr_dgl(&ptask->hdr);
break;
}
skb = ptask->skb;
- skb_pull ( skb, ptask->max_payload );
- if ( ptask->outstanding_pkts > 1 ) {
- ipv4_make_sf_hdr ( &ptask->hdr,
- IPV4_HDR_INTFRAG, dg_size, fg_off, datagram_label );
+ skb_pull(skb, ptask->max_payload);
+ if (ptask->outstanding_pkts > 1) {
+ fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_INTFRAG,
+ dg_size, fg_off, datagram_label);
} else {
- ipv4_make_sf_hdr ( &ptask->hdr,
- IPV4_HDR_LASTFRAG, dg_size, fg_off, datagram_label );
- ptask->max_payload = skb->len + IPV4_FRAG_HDR_SIZE;
-
+ fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_LASTFRAG,
+ dg_size, fg_off, datagram_label);
+ ptask->max_payload = skb->len + RFC2374_FRAG_HDR_SIZE;
}
- ipv4_send_packet ( ptask );
+ fwnet_send_packet(ptask);
} else {
- dev_kfree_skb_any ( ptask->skb );
- kmem_cache_free( ipv4_packet_task_cache, ptask );
+ dev_kfree_skb_any(ptask->skb);
+ kmem_cache_free(fwnet_packet_task_cache, ptask);
}
}
-static void ipv4_write_complete ( struct fw_card *card, int rcode,
- void *payload, size_t length, void *data ) {
- struct ipv4_packet_task *ptask;
+static void fwnet_write_complete(struct fw_card *card, int rcode,
+ void *payload, size_t length, void *data)
+{
+ struct fwnet_packet_task *ptask;
ptask = data;
- fw_debug ( "ipv4_write_complete ( %p, %x, %p, %lx, %p )\n",
- card, rcode, payload, (unsigned long)length, data );
- debug_ptask ( ptask );
- if ( rcode == RCODE_COMPLETE ) {
- ipv4_transmit_packet_done ( ptask );
- } else {
- fw_error ( "ipv4_write_complete: failed: %x\n", rcode );
+ if (rcode == RCODE_COMPLETE)
+ fwnet_transmit_packet_done(ptask);
+ else
+ fw_error("fwnet_write_complete: failed: %x\n", rcode);
/* ??? error recovery */
- }
}
-static int ipv4_send_packet ( struct ipv4_packet_task *ptask ) {
- struct ipv4_priv *priv;
+static int fwnet_send_packet(struct fwnet_packet_task *ptask)
+{
+ struct fwnet_device *dev;
unsigned tx_len;
- struct ipv4_hdr *bufhdr;
+ struct rfc2734_header *bufhdr;
unsigned long flags;
- struct net_device *netdev;
-#if 0 /* stefanr */
- int retval;
-#endif
+ struct net_device *net;
- fw_debug ( "ipv4_send_packet\n" );
- debug_ptask ( ptask );
- priv = ptask->priv;
+ dev = ptask->dev;
tx_len = ptask->max_payload;
- switch (ipv4_get_hdr_lf(&ptask->hdr)) {
- case IPV4_HDR_UNFRAG:
- bufhdr = (struct ipv4_hdr *)skb_push(ptask->skb, IPV4_UNFRAG_HDR_SIZE);
- bufhdr->w0 = htonl(ptask->hdr.w0);
+ switch (fwnet_get_hdr_lf(&ptask->hdr)) {
+ case RFC2374_HDR_UNFRAG:
+ bufhdr = (struct rfc2734_header *)
+ skb_push(ptask->skb, RFC2374_UNFRAG_HDR_SIZE);
+ put_unaligned_be32(ptask->hdr.w0, &bufhdr->w0);
break;
- case IPV4_HDR_FIRSTFRAG:
- case IPV4_HDR_INTFRAG:
- case IPV4_HDR_LASTFRAG:
- bufhdr = (struct ipv4_hdr *)skb_push(ptask->skb, IPV4_FRAG_HDR_SIZE);
- bufhdr->w0 = htonl(ptask->hdr.w0);
- bufhdr->w1 = htonl(ptask->hdr.w1);
+ case RFC2374_HDR_FIRSTFRAG:
+ case RFC2374_HDR_INTFRAG:
+ case RFC2374_HDR_LASTFRAG:
+ bufhdr = (struct rfc2734_header *)
+ skb_push(ptask->skb, RFC2374_FRAG_HDR_SIZE);
+ put_unaligned_be32(ptask->hdr.w0, &bufhdr->w0);
+ put_unaligned_be32(ptask->hdr.w1, &bufhdr->w1);
break;
default:
BUG();
}
- if ( ptask->tx_type == IPV4_GASP ) {
- u32 *packets;
+ if (ptask->dest_node == IEEE1394_ALL_NODES) {
+ u8 *p;
int generation;
- int nodeid;
+ int node_id;
/* ptask->generation may not have been set yet */
- generation = priv->card->generation;
+ generation = dev->card->generation;
smp_rmb();
- nodeid = priv->card->node_id;
- packets = (u32 *)skb_push(ptask->skb, sizeof(u32)*2);
- packets[0] = htonl(nodeid << 16 | (IPV4_GASP_SPECIFIER_ID>>8));
- packets[1] = htonl((IPV4_GASP_SPECIFIER_ID & 0xFF) << 24 | IPV4_GASP_VERSION);
- fw_send_request ( priv->card, &ptask->transaction, TCODE_STREAM_DATA,
- fw_stream_packet_destination_id(3, BROADCAST_CHANNEL, 0),
- generation, SCODE_100, 0ULL, ptask->skb->data, tx_len + 8, ipv4_write_complete, ptask );
- spin_lock_irqsave(&priv->lock,flags);
- list_add_tail ( &ptask->packet_list, &priv->broadcasted_list );
- spin_unlock_irqrestore(&priv->lock,flags);
-#if 0 /* stefanr */
- return retval;
-#else
+ node_id = dev->card->node_id;
+
+ p = skb_push(ptask->skb, 8);
+ put_unaligned_be32(node_id << 16 | IANA_SPECIFIER_ID >> 8, p);
+ put_unaligned_be32((IANA_SPECIFIER_ID & 0xff) << 24
+ | RFC2734_SW_VERSION, &p[4]);
+
+ /* We should not transmit if broadcast_channel.valid == 0. */
+ fw_send_request(dev->card, &ptask->transaction,
+ TCODE_STREAM_DATA,
+ fw_stream_packet_destination_id(3,
+ IEEE1394_BROADCAST_CHANNEL, 0),
+ generation, SCODE_100, 0ULL, ptask->skb->data,
+ tx_len + 8, fwnet_write_complete, ptask);
+
+ /* FIXME race? */
+ spin_lock_irqsave(&dev->lock, flags);
+ list_add_tail(&ptask->pt_link, &dev->broadcasted_list);
+ spin_unlock_irqrestore(&dev->lock, flags);
+
return 0;
-#endif
}
- fw_debug("send_request (%p, %p, WRITE_BLOCK, %x, %x, %x, %llx, %p, %d, %p, %p\n",
- priv->card, &ptask->transaction, ptask->dest_node, ptask->generation,
- ptask->speed, (unsigned long long)ptask->fifo_addr, ptask->skb->data, tx_len,
- ipv4_write_complete, ptask );
- fw_send_request ( priv->card, &ptask->transaction,
- TCODE_WRITE_BLOCK_REQUEST, ptask->dest_node, ptask->generation, ptask->speed,
- ptask->fifo_addr, ptask->skb->data, tx_len, ipv4_write_complete, ptask );
- spin_lock_irqsave(&priv->lock,flags);
- list_add_tail ( &ptask->packet_list, &priv->sent_list );
- spin_unlock_irqrestore(&priv->lock,flags);
- netdev = priv->card->netdev;
- netdev->trans_start = jiffies;
+
+ fw_send_request(dev->card, &ptask->transaction,
+ TCODE_WRITE_BLOCK_REQUEST, ptask->dest_node,
+ ptask->generation, ptask->speed, ptask->fifo_addr,
+ ptask->skb->data, tx_len, fwnet_write_complete, ptask);
+
+ /* FIXME race? */
+ spin_lock_irqsave(&dev->lock, flags);
+ list_add_tail(&ptask->pt_link, &dev->sent_list);
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ net = dev->card->netdev;
+ net->trans_start = jiffies;
+
return 0;
}
-static int ipv4_broadcast_start ( struct ipv4_priv *priv ) {
+static int fwnet_broadcast_start(struct fwnet_device *dev)
+{
struct fw_iso_context *context;
int retval;
unsigned num_packets;
struct fw_iso_packet packet;
unsigned long offset;
unsigned u;
- /* unsigned transmit_speed; */
-#if 0 /* stefanr */
- if ( priv->card->broadcast_channel != (BROADCAST_CHANNEL_VALID|BROADCAST_CHANNEL_INITIAL)) {
- fw_notify ( "Invalid broadcast channel %x\n", priv->card->broadcast_channel );
- /* FIXME: try again later? */
- /* return -EINVAL; */
- }
-#endif
- if ( priv->local_fifo == INVALID_FIFO_ADDR ) {
- struct fw_address_region region;
-
- priv->handler.length = FIFO_SIZE;
- priv->handler.address_callback = ipv4_receive_packet;
- priv->handler.callback_data = priv;
- /* FIXME: this is OHCI, but what about others? */
- region.start = 0xffff00000000ULL;
- region.end = 0xfffffffffffcULL;
-
- retval = fw_core_add_address_handler ( &priv->handler, ®ion );
- if ( retval < 0 )
+ if (dev->local_fifo == FWNET_NO_FIFO_ADDR) {
+ /* outside OHCI posted write area? */
+ static const struct fw_address_region region = {
+ .start = 0xffff00000000ULL,
+ .end = CSR_REGISTER_BASE,
+ };
+
+ dev->handler.length = 4096;
+ dev->handler.address_callback = fwnet_receive_packet;
+ dev->handler.callback_data = dev;
+
+ retval = fw_core_add_address_handler(&dev->handler, ®ion);
+ if (retval < 0)
goto failed_initial;
- priv->local_fifo = priv->handler.offset;
+
+ dev->local_fifo = dev->handler.offset;
}
- /*
- * FIXME: rawiso limits us to PAGE_SIZE. This only matters if we ever have
- * a machine with PAGE_SIZE < 4096
- */
- max_receive = 1U << (priv->card->max_receive + 1);
- num_packets = ( ipv4_iso_page_count * PAGE_SIZE ) / max_receive;
- if ( ! priv->broadcast_rcv_context ) {
+ max_receive = 1U << (dev->card->max_receive + 1);
+ num_packets = (FWNET_ISO_PAGE_COUNT * PAGE_SIZE) / max_receive;
+
+ if (!dev->broadcast_rcv_context) {
void **ptrptr;
- context = fw_iso_context_create ( priv->card,
- FW_ISO_CONTEXT_RECEIVE, BROADCAST_CHANNEL,
- priv->card->link_speed, 8, ipv4_receive_broadcast, priv );
+ context = fw_iso_context_create(dev->card,
+ FW_ISO_CONTEXT_RECEIVE, IEEE1394_BROADCAST_CHANNEL,
+ dev->card->link_speed, 8, fwnet_receive_broadcast, dev);
if (IS_ERR(context)) {
retval = PTR_ERR(context);
goto failed_context_create;
}
- retval = fw_iso_buffer_init ( &priv->broadcast_rcv_buffer,
- priv->card, ipv4_iso_page_count, DMA_FROM_DEVICE );
- if ( retval < 0 )
+
+ retval = fw_iso_buffer_init(&dev->broadcast_rcv_buffer,
+ dev->card, FWNET_ISO_PAGE_COUNT, DMA_FROM_DEVICE);
+ if (retval < 0)
goto failed_buffer_init;
- ptrptr = kmalloc ( sizeof(void*)*num_packets, GFP_KERNEL );
- if ( ! ptrptr ) {
+
+ ptrptr = kmalloc(sizeof(void *) * num_packets, GFP_KERNEL);
+ if (!ptrptr) {
retval = -ENOMEM;
goto failed_ptrs_alloc;
}
- priv->broadcast_rcv_buffer_ptrs = ptrptr;
- for ( u = 0; u < ipv4_iso_page_count; u++ ) {
+
+ dev->broadcast_rcv_buffer_ptrs = ptrptr;
+ for (u = 0; u < FWNET_ISO_PAGE_COUNT; u++) {
void *ptr;
unsigned v;
- ptr = kmap ( priv->broadcast_rcv_buffer.pages[u] );
- for ( v = 0; v < num_packets / ipv4_iso_page_count; v++ )
- *ptrptr++ = (void *)((char *)ptr + v * max_receive);
+ ptr = kmap(dev->broadcast_rcv_buffer.pages[u]);
+ for (v = 0; v < num_packets / FWNET_ISO_PAGE_COUNT; v++)
+ *ptrptr++ = (void *)
+ ((char *)ptr + v * max_receive);
}
- priv->broadcast_rcv_context = context;
- } else
- context = priv->broadcast_rcv_context;
+ dev->broadcast_rcv_context = context;
+ } else {
+ context = dev->broadcast_rcv_context;
+ }
packet.payload_length = max_receive;
packet.interrupt = 1;
packet.skip = 0;
packet.tag = 3;
packet.sy = 0;
- packet.header_length = IPV4_GASP_OVERHEAD;
+ packet.header_length = IEEE1394_GASP_HDR_SIZE;
offset = 0;
- for ( u = 0; u < num_packets; u++ ) {
- retval = fw_iso_context_queue ( context, &packet,
- &priv->broadcast_rcv_buffer, offset );
- if ( retval < 0 )
+
+ for (u = 0; u < num_packets; u++) {
+ retval = fw_iso_context_queue(context, &packet,
+ &dev->broadcast_rcv_buffer, offset);
+ if (retval < 0)
goto failed_rcv_queue;
+
offset += max_receive;
}
- priv->num_broadcast_rcv_ptrs = num_packets;
- priv->rcv_buffer_size = max_receive;
- priv->broadcast_rcv_next_ptr = 0U;
- retval = fw_iso_context_start ( context, -1, 0, FW_ISO_CONTEXT_MATCH_ALL_TAGS ); /* ??? sync */
- if ( retval < 0 )
+ dev->num_broadcast_rcv_ptrs = num_packets;
+ dev->rcv_buffer_size = max_receive;
+ dev->broadcast_rcv_next_ptr = 0U;
+ retval = fw_iso_context_start(context, -1, 0,
+ FW_ISO_CONTEXT_MATCH_ALL_TAGS); /* ??? sync */
+ if (retval < 0)
goto failed_rcv_queue;
- /* FIXME: adjust this when we know the max receive speeds of all other IP nodes on the bus. */
- /* since we only xmt at S100 ??? */
- priv->broadcast_xmt_max_payload = S100_BUFFER_SIZE - IPV4_GASP_OVERHEAD - IPV4_UNFRAG_HDR_SIZE;
- priv->broadcast_state = IPV4_BROADCAST_RUNNING;
+
+ /* FIXME: adjust it according to the min. speed of all known peers? */
+ dev->broadcast_xmt_max_payload = IEEE1394_MAX_PAYLOAD_S100
+ - IEEE1394_GASP_HDR_SIZE - RFC2374_UNFRAG_HDR_SIZE;
+ dev->broadcast_state = FWNET_BROADCAST_RUNNING;
+
return 0;
failed_rcv_queue:
- kfree ( priv->broadcast_rcv_buffer_ptrs );
- priv->broadcast_rcv_buffer_ptrs = NULL;
+ kfree(dev->broadcast_rcv_buffer_ptrs);
+ dev->broadcast_rcv_buffer_ptrs = NULL;
failed_ptrs_alloc:
- fw_iso_buffer_destroy ( &priv->broadcast_rcv_buffer, priv->card );
+ fw_iso_buffer_destroy(&dev->broadcast_rcv_buffer, dev->card);
failed_buffer_init:
- fw_iso_context_destroy ( context );
- priv->broadcast_rcv_context = NULL;
+ fw_iso_context_destroy(context);
+ dev->broadcast_rcv_context = NULL;
failed_context_create:
- fw_core_remove_address_handler ( &priv->handler );
+ fw_core_remove_address_handler(&dev->handler);
failed_initial:
- priv->local_fifo = INVALID_FIFO_ADDR;
+ dev->local_fifo = FWNET_NO_FIFO_ADDR;
+
return retval;
}
-/* This is called after an "ifup" */
-static int ipv4_open(struct net_device *dev) {
- struct ipv4_priv *priv;
+/* ifup */
+static int fwnet_open(struct net_device *net)
+{
+ struct fwnet_device *dev = netdev_priv(net);
int ret;
- priv = netdev_priv(dev);
- if (priv->broadcast_state == IPV4_BROADCAST_ERROR) {
- ret = ipv4_broadcast_start ( priv );
+ if (dev->broadcast_state == FWNET_BROADCAST_ERROR) {
+ ret = fwnet_broadcast_start(dev);
if (ret)
return ret;
}
- netif_start_queue(dev);
+ netif_start_queue(net);
+
return 0;
}
-/* This is called after an "ifdown" */
-static int ipv4_stop(struct net_device *netdev)
+/* ifdown */
+static int fwnet_stop(struct net_device *net)
{
- /* flush priv->wake */
- /* flush_scheduled_work(); */
+ netif_stop_queue(net);
+
+ /* Deallocate iso context for use by other applications? */
- netif_stop_queue(netdev);
return 0;
}
-/* Transmit a packet (called by kernel) */
-static int ipv4_tx(struct sk_buff *skb, struct net_device *netdev)
+static int fwnet_tx(struct sk_buff *skb, struct net_device *net)
{
- struct ipv4_ether_hdr hdr_buf;
- struct ipv4_priv *priv = netdev_priv(netdev);
+ struct fwnet_header hdr_buf;
+ struct fwnet_device *dev = netdev_priv(net);
__be16 proto;
u16 dest_node;
- enum ipv4_tx_type tx_type;
unsigned max_payload;
u16 dg_size;
u16 *datagram_label_ptr;
- struct ipv4_packet_task *ptask;
- struct ipv4_node *node = NULL;
+ struct fwnet_packet_task *ptask;
+ struct fwnet_peer *peer = NULL;
- ptask = kmem_cache_alloc(ipv4_packet_task_cache, GFP_ATOMIC);
+ ptask = kmem_cache_alloc(fwnet_packet_task_cache, GFP_ATOMIC);
if (ptask == NULL)
goto fail;
goto fail;
/*
- * Get rid of the fake ipv4 header, but first make a copy.
+ * Make a copy of the driver-specific header.
* We might need to rebuild the header on tx failure.
*/
memcpy(&hdr_buf, skb->data, sizeof(hdr_buf));
* Set the transmission type for the packet. ARP packets and IP
* broadcast packets are sent via GASP.
*/
- if ( memcmp(hdr_buf.h_dest, netdev->broadcast, IPV4_ALEN) == 0
+ if (memcmp(hdr_buf.h_dest, net->broadcast, FWNET_ALEN) == 0
|| proto == htons(ETH_P_ARP)
- || ( proto == htons(ETH_P_IP)
- && IN_MULTICAST(ntohl(ip_hdr(skb)->daddr)) ) ) {
- /* fw_debug ( "transmitting arp or multicast packet\n" );*/
- tx_type = IPV4_GASP;
- dest_node = ALL_NODES;
- max_payload = priv->broadcast_xmt_max_payload;
- /* BUG_ON(max_payload < S100_BUFFER_SIZE - IPV4_GASP_OVERHEAD); */
- datagram_label_ptr = &priv->broadcast_xmt_datagramlabel;
- ptask->fifo_addr = INVALID_FIFO_ADDR;
- ptask->generation = 0U;
- ptask->dest_node = 0U;
- ptask->speed = 0;
+ || (proto == htons(ETH_P_IP)
+ && IN_MULTICAST(ntohl(ip_hdr(skb)->daddr)))) {
+ max_payload = dev->broadcast_xmt_max_payload;
+ datagram_label_ptr = &dev->broadcast_xmt_datagramlabel;
+
+ ptask->fifo_addr = FWNET_NO_FIFO_ADDR;
+ ptask->generation = 0;
+ ptask->dest_node = IEEE1394_ALL_NODES;
+ ptask->speed = SCODE_100;
} else {
- __be64 guid = get_unaligned((u64 *)hdr_buf.h_dest);
+ __be64 guid = get_unaligned((__be64 *)hdr_buf.h_dest);
u8 generation;
- node = ipv4_node_find_by_guid(priv, be64_to_cpu(guid));
- if (!node) {
- fw_debug ( "Normal packet but no node\n" );
+ peer = fwnet_peer_find_by_guid(dev, be64_to_cpu(guid));
+ if (!peer)
goto fail;
- }
- if (node->fifo == INVALID_FIFO_ADDR) {
- fw_debug ( "Normal packet but no fifo addr\n" );
+ if (peer->fifo == FWNET_NO_FIFO_ADDR)
goto fail;
- }
- /* fw_debug ( "Transmitting normal packet to %x at %llxx\n", node->nodeid, node->fifo ); */
- generation = node->generation;
- dest_node = node->nodeid;
- max_payload = node->max_payload;
- /* BUG_ON(max_payload < S100_BUFFER_SIZE - IPV4_FRAG_HDR_SIZE); */
+ generation = peer->generation;
+ smp_rmb();
+ dest_node = peer->node_id;
+
+ max_payload = peer->max_payload;
+ datagram_label_ptr = &peer->datagram_label;
- datagram_label_ptr = &node->datagram_label;
- tx_type = IPV4_WRREQ;
- ptask->fifo_addr = node->fifo;
+ ptask->fifo_addr = peer->fifo;
ptask->generation = generation;
ptask->dest_node = dest_node;
- ptask->speed = node->xmt_speed;
+ ptask->speed = peer->xmt_speed;
}
/* If this is an ARP packet, convert it */
if (proto == htons(ETH_P_ARP)) {
- /* Convert a standard ARP packet to 1394 ARP. The first 8 bytes (the entire
- * arphdr) is the same format as the ip1394 header, so they overlap. The rest
- * needs to be munged a bit. The remainder of the arphdr is formatted based
- * on hwaddr len and ipaddr len. We know what they'll be, so it's easy to
- * judge.
- *
- * Now that the EUI is used for the hardware address all we need to do to make
- * this work for 1394 is to insert 2 quadlets that contain max_rec size,
- * speed, and unicast FIFO address information between the sender_unique_id
- * and the IP addresses.
- */
struct arphdr *arp = (struct arphdr *)skb->data;
unsigned char *arp_ptr = (unsigned char *)(arp + 1);
- struct ipv4_arp *arp1394 = (struct ipv4_arp *)skb->data;
- u32 ipaddr;
-
- ipaddr = *(u32*)(arp_ptr + IPV4_ALEN);
- arp1394->hw_addr_len = 16;
- arp1394->max_rec = priv->card->max_receive;
- arp1394->sspd = priv->card->link_speed;
- arp1394->fifo_hi = htons(priv->local_fifo >> 32);
- arp1394->fifo_lo = htonl(priv->local_fifo & 0xFFFFFFFF);
- arp1394->sip = ipaddr;
+ struct rfc2734_arp *arp1394 = (struct rfc2734_arp *)skb->data;
+ __be32 ipaddr;
+
+ ipaddr = get_unaligned((__be32 *)(arp_ptr + FWNET_ALEN));
+
+ arp1394->hw_addr_len = RFC2734_HW_ADDR_LEN;
+ arp1394->max_rec = dev->card->max_receive;
+ arp1394->sspd = dev->card->link_speed;
+
+ put_unaligned_be16(dev->local_fifo >> 32,
+ &arp1394->fifo_hi);
+ put_unaligned_be32(dev->local_fifo & 0xffffffff,
+ &arp1394->fifo_lo);
+ put_unaligned(ipaddr, &arp1394->sip);
}
- if ( ipv4_max_xmt && max_payload > ipv4_max_xmt )
- max_payload = ipv4_max_xmt;
ptask->hdr.w0 = 0;
ptask->hdr.w1 = 0;
ptask->skb = skb;
- ptask->priv = priv;
- ptask->tx_type = tx_type;
+ ptask->dev = dev;
+
/* Does it all fit in one packet? */
- if ( dg_size <= max_payload ) {
- ipv4_make_uf_hdr(&ptask->hdr, be16_to_cpu(proto));
+ if (dg_size <= max_payload) {
+ fwnet_make_uf_hdr(&ptask->hdr, ntohs(proto));
ptask->outstanding_pkts = 1;
- max_payload = dg_size + IPV4_UNFRAG_HDR_SIZE;
+ max_payload = dg_size + RFC2374_UNFRAG_HDR_SIZE;
} else {
u16 datagram_label;
- max_payload -= IPV4_FRAG_OVERHEAD;
+ max_payload -= RFC2374_FRAG_OVERHEAD;
datagram_label = (*datagram_label_ptr)++;
- ipv4_make_ff_hdr(&ptask->hdr, be16_to_cpu(proto), dg_size, datagram_label );
+ fwnet_make_ff_hdr(&ptask->hdr, ntohs(proto), dg_size,
+ datagram_label);
ptask->outstanding_pkts = DIV_ROUND_UP(dg_size, max_payload);
- max_payload += IPV4_FRAG_HDR_SIZE;
+ max_payload += RFC2374_FRAG_HDR_SIZE;
}
ptask->max_payload = max_payload;
- ipv4_send_packet ( ptask );
+ fwnet_send_packet(ptask);
+
return NETDEV_TX_OK;
fail:
if (ptask)
- kmem_cache_free(ipv4_packet_task_cache, ptask);
+ kmem_cache_free(fwnet_packet_task_cache, ptask);
if (skb != NULL)
dev_kfree_skb(skb);
- netdev->stats.tx_dropped++;
- netdev->stats.tx_errors++;
+ net->stats.tx_dropped++;
+ net->stats.tx_errors++;
/*
* FIXME: According to a patch from 2003-02-26, "returning non-zero
return NETDEV_TX_OK;
}
-/*
- * FIXME: What to do if we timeout? I think a host reset is probably in order,
- * so that's what we do. Should we increment the stat counters too?
- */
-static void ipv4_tx_timeout(struct net_device *dev) {
- struct ipv4_priv *priv;
+static void fwnet_tx_timeout(struct net_device *net)
+{
+ fw_error("%s: timeout\n", net->name);
- priv = netdev_priv(dev);
- fw_error ( "%s: Timeout, resetting host\n", dev->name );
-#if 0 /* stefanr */
- fw_core_initiate_bus_reset ( priv->card, 1 );
-#endif
+ /* FIXME: What to do if we timeout? */
}
-static int ipv4_change_mtu ( struct net_device *dev, int new_mtu ) {
-#if 0
- int max_mtu;
- struct ipv4_priv *priv;
-#endif
-
+static int fwnet_change_mtu(struct net_device *net, int new_mtu)
+{
if (new_mtu < 68)
return -EINVAL;
-#if 0
- priv = netdev_priv(dev);
- /* This is not actually true because we can fragment packets at the firewire layer */
- max_mtu = (1 << (priv->card->max_receive + 1))
- - sizeof(struct ipv4_hdr) - IPV4_GASP_OVERHEAD;
- if (new_mtu > max_mtu) {
- fw_notify ( "%s: Local node constrains MTU to %d\n", dev->name, max_mtu);
- return -ERANGE;
- }
-#endif
- dev->mtu = new_mtu;
+ net->mtu = new_mtu;
return 0;
}
-static void ipv4_get_drvinfo(struct net_device *dev,
-struct ethtool_drvinfo *info) {
- strcpy(info->driver, ipv4_driver_name);
- strcpy(info->bus_info, "ieee1394"); /* FIXME provide more detail? */
+static void fwnet_get_drvinfo(struct net_device *net,
+ struct ethtool_drvinfo *info)
+{
+ strcpy(info->driver, KBUILD_MODNAME);
+ strcpy(info->bus_info, "ieee1394");
}
-static struct ethtool_ops ipv4_ethtool_ops = {
- .get_drvinfo = ipv4_get_drvinfo,
+static struct ethtool_ops fwnet_ethtool_ops = {
+ .get_drvinfo = fwnet_get_drvinfo,
};
-static const struct net_device_ops ipv4_netdev_ops = {
- .ndo_open = ipv4_open,
- .ndo_stop = ipv4_stop,
- .ndo_start_xmit = ipv4_tx,
- .ndo_tx_timeout = ipv4_tx_timeout,
- .ndo_change_mtu = ipv4_change_mtu,
+static const struct net_device_ops fwnet_netdev_ops = {
+ .ndo_open = fwnet_open,
+ .ndo_stop = fwnet_stop,
+ .ndo_start_xmit = fwnet_tx,
+ .ndo_tx_timeout = fwnet_tx_timeout,
+ .ndo_change_mtu = fwnet_change_mtu,
};
-static void ipv4_init_dev ( struct net_device *dev ) {
- dev->header_ops = &ipv4_header_ops;
- dev->netdev_ops = &ipv4_netdev_ops;
- SET_ETHTOOL_OPS(dev, &ipv4_ethtool_ops);
-
- dev->watchdog_timeo = IPV4_TIMEOUT;
- dev->flags = IFF_BROADCAST | IFF_MULTICAST;
- dev->features = NETIF_F_HIGHDMA;
- dev->addr_len = IPV4_ALEN;
- dev->hard_header_len = IPV4_HLEN;
- dev->type = ARPHRD_IEEE1394;
-
- /* FIXME: This value was copied from ether_setup(). Is it too much? */
- dev->tx_queue_len = 1000;
+static void fwnet_init_dev(struct net_device *net)
+{
+ net->header_ops = &fwnet_header_ops;
+ net->netdev_ops = &fwnet_netdev_ops;
+ net->watchdog_timeo = 100000; /* ? FIXME */
+ net->flags = IFF_BROADCAST | IFF_MULTICAST;
+ net->features = NETIF_F_HIGHDMA;
+ net->addr_len = FWNET_ALEN;
+ net->hard_header_len = FWNET_HLEN;
+ net->type = ARPHRD_IEEE1394;
+ net->tx_queue_len = 1000; /* ? FIXME */
+ SET_ETHTOOL_OPS(net, &fwnet_ethtool_ops);
}
-static int ipv4_probe ( struct device *dev ) {
- struct fw_unit * unit;
- struct fw_device *device;
- struct fw_card *card;
- struct net_device *netdev;
- struct ipv4_priv *priv;
+/* FIXME create netdev upon first fw_unit of a card, not upon local fw_unit */
+static int fwnet_probe(struct device *_dev)
+{
+ struct fw_unit *unit = fw_unit(_dev);
+ struct fw_device *device = fw_parent_device(unit);
+ struct fw_card *card = device->card;
+ struct net_device *net;
+ struct fwnet_device *dev;
unsigned max_mtu;
- __be64 guid;
-
- fw_debug("ipv4 Probing\n" );
- unit = fw_unit ( dev );
- device = fw_device ( unit->device.parent );
- card = device->card;
- if ( ! device->is_local ) {
+ if (!device->is_local) {
int added;
- fw_debug ( "Non-local, adding remote node entry\n" );
- added = ipv4_node_new ( card, device );
+ added = fwnet_peer_new(card, device);
return added;
}
- fw_debug("ipv4 Local: adding netdev\n" );
- netdev = alloc_netdev ( sizeof(*priv), "firewire%d", ipv4_init_dev );
- if ( netdev == NULL) {
- fw_error( "Out of memory\n");
+ net = alloc_netdev(sizeof(*dev), "firewire%d", fwnet_init_dev);
+ if (net == NULL) {
+ fw_error("out of memory\n");
goto out;
}
- SET_NETDEV_DEV(netdev, card->device);
- priv = netdev_priv(netdev);
+ SET_NETDEV_DEV(net, card->device);
+ dev = netdev_priv(net);
- spin_lock_init(&priv->lock);
- priv->broadcast_state = IPV4_BROADCAST_ERROR;
- priv->broadcast_rcv_context = NULL;
- priv->broadcast_xmt_max_payload = 0;
- priv->broadcast_xmt_datagramlabel = 0;
+ spin_lock_init(&dev->lock);
+ dev->broadcast_state = FWNET_BROADCAST_ERROR;
+ dev->broadcast_rcv_context = NULL;
+ dev->broadcast_xmt_max_payload = 0;
+ dev->broadcast_xmt_datagramlabel = 0;
- priv->local_fifo = INVALID_FIFO_ADDR;
+ dev->local_fifo = FWNET_NO_FIFO_ADDR;
- /* INIT_WORK(&priv->wake, ipv4_handle_queue);*/
- INIT_LIST_HEAD(&priv->packet_list);
- INIT_LIST_HEAD(&priv->broadcasted_list);
- INIT_LIST_HEAD(&priv->sent_list );
+ /* INIT_WORK(&dev->wake, fwnet_handle_queue);*/
+ INIT_LIST_HEAD(&dev->packet_list);
+ INIT_LIST_HEAD(&dev->broadcasted_list);
+ INIT_LIST_HEAD(&dev->sent_list);
- priv->card = card;
+ dev->card = card;
/*
* Use the RFC 2734 default 1500 octets or the maximum payload
* as initial MTU
*/
max_mtu = (1 << (card->max_receive + 1))
- - sizeof(struct ipv4_hdr) - IPV4_GASP_OVERHEAD;
- netdev->mtu = min(1500U, max_mtu);
+ - sizeof(struct rfc2734_header) - IEEE1394_GASP_HDR_SIZE;
+ net->mtu = min(1500U, max_mtu);
/* Set our hardware address while we're at it */
- guid = cpu_to_be64(card->guid);
- memcpy(netdev->dev_addr, &guid, sizeof(u64));
- memset(netdev->broadcast, 0xff, sizeof(u64));
- if ( register_netdev ( netdev ) ) {
- fw_error ( "Cannot register the driver\n");
+ put_unaligned_be64(card->guid, net->dev_addr);
+ put_unaligned_be64(~0ULL, net->broadcast);
+ if (register_netdev(net)) {
+ fw_error("Cannot register the driver\n");
goto out;
}
- fw_notify ( "%s: IPv4 over Firewire on device %016llx\n",
- netdev->name, card->guid );
- card->netdev = netdev;
+ fw_notify("%s: IPv4 over FireWire on device %016llx\n",
+ net->name, (unsigned long long)card->guid);
+ card->netdev = net;
- return 0 /* ipv4_new_node ( ud ) */;
+ return 0;
out:
- if ( netdev )
- free_netdev ( netdev );
+ if (net)
+ free_netdev(net);
+
return -ENOENT;
}
+static int fwnet_remove(struct device *_dev)
+{
+ struct fw_unit *unit = fw_unit(_dev);
+ struct fw_device *device = fw_parent_device(unit);
+ struct fw_card *card = device->card;
+ struct net_device *net;
+ struct fwnet_device *dev;
+ struct fwnet_peer *peer;
+ struct fwnet_partial_datagram *pd, *pd_next;
+ struct fwnet_packet_task *ptask, *pt_next;
+
+ if (!device->is_local) {
+ fwnet_peer_delete(card, device);
-static int ipv4_remove ( struct device *dev ) {
- struct fw_unit * unit;
- struct fw_device *device;
- struct fw_card *card;
- struct net_device *netdev;
- struct ipv4_priv *priv;
- struct ipv4_node *node;
- struct ipv4_partial_datagram *pd, *pd_next;
- struct ipv4_packet_task *ptask, *pt_next;
-
- fw_debug("ipv4 Removing\n" );
- unit = fw_unit ( dev );
- device = fw_device ( unit->device.parent );
- card = device->card;
-
- if ( ! device->is_local ) {
- fw_debug ( "Node %x is non-local, removing remote node entry\n", device->node_id );
- ipv4_node_delete ( card, device );
return 0;
}
- netdev = card->netdev;
- if ( netdev ) {
- fw_debug ( "Node %x is local: deleting netdev\n", device->node_id );
- priv = netdev_priv ( netdev );
- unregister_netdev ( netdev );
- fw_debug ( "unregistered\n" );
- if ( priv->local_fifo != INVALID_FIFO_ADDR )
- fw_core_remove_address_handler ( &priv->handler );
- fw_debug ( "address handler gone\n" );
- if ( priv->broadcast_rcv_context ) {
- fw_iso_context_stop ( priv->broadcast_rcv_context );
- fw_iso_buffer_destroy ( &priv->broadcast_rcv_buffer, priv->card );
- fw_iso_context_destroy ( priv->broadcast_rcv_context );
- fw_debug ( "rcv stopped\n" );
+
+ net = card->netdev;
+ if (net) {
+ dev = netdev_priv(net);
+ unregister_netdev(net);
+
+ if (dev->local_fifo != FWNET_NO_FIFO_ADDR)
+ fw_core_remove_address_handler(&dev->handler);
+ if (dev->broadcast_rcv_context) {
+ fw_iso_context_stop(dev->broadcast_rcv_context);
+ fw_iso_buffer_destroy(&dev->broadcast_rcv_buffer,
+ dev->card);
+ fw_iso_context_destroy(dev->broadcast_rcv_context);
}
- list_for_each_entry_safe( ptask, pt_next, &priv->packet_list, packet_list ) {
- dev_kfree_skb_any ( ptask->skb );
- kmem_cache_free( ipv4_packet_task_cache, ptask );
+ list_for_each_entry_safe(ptask, pt_next,
+ &dev->packet_list, pt_link) {
+ dev_kfree_skb_any(ptask->skb);
+ kmem_cache_free(fwnet_packet_task_cache, ptask);
}
- list_for_each_entry_safe( ptask, pt_next, &priv->broadcasted_list, packet_list ) {
- dev_kfree_skb_any ( ptask->skb );
- kmem_cache_free( ipv4_packet_task_cache, ptask );
+ list_for_each_entry_safe(ptask, pt_next,
+ &dev->broadcasted_list, pt_link) {
+ dev_kfree_skb_any(ptask->skb);
+ kmem_cache_free(fwnet_packet_task_cache, ptask);
}
- list_for_each_entry_safe( ptask, pt_next, &priv->sent_list, packet_list ) {
- dev_kfree_skb_any ( ptask->skb );
- kmem_cache_free( ipv4_packet_task_cache, ptask );
+ list_for_each_entry_safe(ptask, pt_next,
+ &dev->sent_list, pt_link) {
+ dev_kfree_skb_any(ptask->skb);
+ kmem_cache_free(fwnet_packet_task_cache, ptask);
}
- fw_debug ( "lists emptied\n" );
- list_for_each_entry( node, &card->ipv4_nodes, ipv4_nodes ) {
- if ( node->pdg_size ) {
- list_for_each_entry_safe( pd, pd_next, &node->pdg_list, pdg_list )
- ipv4_pd_delete ( pd );
- node->pdg_size = 0;
+ list_for_each_entry(peer, &card->peer_list, peer_link) {
+ if (peer->pdg_size) {
+ list_for_each_entry_safe(pd, pd_next,
+ &peer->pd_list, pd_link)
+ fwnet_pd_delete(pd);
+ peer->pdg_size = 0;
}
- node->fifo = INVALID_FIFO_ADDR;
+ peer->fifo = FWNET_NO_FIFO_ADDR;
}
- fw_debug ( "nodes cleaned up\n" );
- free_netdev ( netdev );
+ free_netdev(net);
card->netdev = NULL;
- fw_debug ( "done\n" );
}
+
return 0;
}
-static void ipv4_update ( struct fw_unit *unit ) {
- struct fw_device *device;
- struct fw_card *card;
+/*
+ * FIXME abort partially sent fragmented datagrams,
+ * discard partially received fragmented datagrams
+ */
+static void fwnet_update(struct fw_unit *unit)
+{
+ struct fw_device *device = fw_parent_device(unit);
+ struct net_device *net = device->card->netdev;
+ struct fwnet_device *dev;
+ struct fwnet_peer *peer;
+ u64 guid;
- fw_debug ( "ipv4_update unit %p\n", unit );
- device = fw_device ( unit->device.parent );
- card = device->card;
- if ( ! device->is_local ) {
- struct ipv4_node *node;
- u64 guid;
- struct net_device *netdev;
- struct ipv4_priv *priv;
-
- netdev = card->netdev;
- if ( netdev ) {
- priv = netdev_priv ( netdev );
- guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
- node = ipv4_node_find_by_guid ( priv, guid );
- if ( ! node ) {
- fw_error ( "ipv4_update: no node for device %llx\n", guid );
- return;
- }
- fw_debug ( "Non-local, updating remote node entry for guid %llx old generation %x, old nodeid %x\n", guid, node->generation, node->nodeid );
- node->generation = device->generation;
- rmb();
- node->nodeid = device->node_id;
- fw_debug ( "New generation %x, new nodeid %x\n", node->generation, node->nodeid );
- } else
- fw_error ( "nonlocal, but no netdev? How can that be?\n" );
- } else {
- /* FIXME: What do we need to do on bus reset? */
- fw_debug ( "Local, doing nothing\n" );
+ if (net && !device->is_local) {
+ dev = netdev_priv(net);
+ guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
+ peer = fwnet_peer_find_by_guid(dev, guid);
+ if (!peer) {
+ fw_error("fwnet_update: no peer for device %016llx\n",
+ (unsigned long long)guid);
+ return;
+ }
+ peer->generation = device->generation;
+ rmb();
+ peer->node_id = device->node_id;
}
}
-static struct fw_driver ipv4_driver = {
+static const struct ieee1394_device_id fwnet_id_table[] = {
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID |
+ IEEE1394_MATCH_VERSION,
+ .specifier_id = IANA_SPECIFIER_ID,
+ .version = RFC2734_SW_VERSION,
+ },
+ { }
+};
+
+static struct fw_driver fwnet_driver = {
.driver = {
- .owner = THIS_MODULE,
- .name = ipv4_driver_name,
- .bus = &fw_bus_type,
- .probe = ipv4_probe,
- .remove = ipv4_remove,
+ .owner = THIS_MODULE,
+ .name = "net",
+ .bus = &fw_bus_type,
+ .probe = fwnet_probe,
+ .remove = fwnet_remove,
},
- .update = ipv4_update,
- .id_table = ipv4_id_table,
+ .update = fwnet_update,
+ .id_table = fwnet_id_table,
+};
+
+static const u32 rfc2374_unit_directory_data[] = {
+ 0x00040000, /* directory_length */
+ 0x1200005e, /* unit_specifier_id: IANA */
+ 0x81000003, /* textual descriptor offset */
+ 0x13000001, /* unit_sw_version: RFC 2734 */
+ 0x81000005, /* textual descriptor offset */
+ 0x00030000, /* descriptor_length */
+ 0x00000000, /* text */
+ 0x00000000, /* minimal ASCII, en */
+ 0x49414e41, /* I A N A */
+ 0x00030000, /* descriptor_length */
+ 0x00000000, /* text */
+ 0x00000000, /* minimal ASCII, en */
+ 0x49507634, /* I P v 4 */
+};
+
+static struct fw_descriptor rfc2374_unit_directory = {
+ .length = ARRAY_SIZE(rfc2374_unit_directory_data),
+ .key = (CSR_DIRECTORY | CSR_UNIT) << 24,
+ .data = rfc2374_unit_directory_data
};
-static int __init ipv4_init ( void ) {
- int added;
+static int __init fwnet_init(void)
+{
+ int err;
+
+ err = fw_core_add_descriptor(&rfc2374_unit_directory);
+ if (err)
+ return err;
- added = fw_core_add_descriptor ( &ipv4_unit_directory );
- if ( added < 0 )
- fw_error ( "Failed to add descriptor" );
- ipv4_packet_task_cache = kmem_cache_create("packet_task",
- sizeof(struct ipv4_packet_task), 0, 0, NULL);
- fw_debug("Adding ipv4 module\n" );
- return driver_register ( &ipv4_driver.driver );
+ fwnet_packet_task_cache = kmem_cache_create("packet_task",
+ sizeof(struct fwnet_packet_task), 0, 0, NULL);
+ if (!fwnet_packet_task_cache) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = driver_register(&fwnet_driver.driver);
+ if (!err)
+ return 0;
+
+ kmem_cache_destroy(fwnet_packet_task_cache);
+out:
+ fw_core_remove_descriptor(&rfc2374_unit_directory);
+
+ return err;
}
+module_init(fwnet_init);
-static void __exit ipv4_cleanup ( void ) {
- fw_core_remove_descriptor ( &ipv4_unit_directory );
- fw_debug("Removing ipv4 module\n" );
- driver_unregister ( &ipv4_driver.driver );
+static void __exit fwnet_cleanup(void)
+{
+ driver_unregister(&fwnet_driver.driver);
+ kmem_cache_destroy(fwnet_packet_task_cache);
+ fw_core_remove_descriptor(&rfc2374_unit_directory);
}
+module_exit(fwnet_cleanup);
-module_init(ipv4_init);
-module_exit(ipv4_cleanup);
+MODULE_AUTHOR("Jay Fenlason <fenlason@redhat.com>");
+MODULE_DESCRIPTION("IPv4 over IEEE1394 as per RFC 2734");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(ieee1394, fwnet_id_table);
projects / profile / ivi / kernel-adaptation-intel-automotive.git / commitdiff