diff options
Diffstat (limited to 'net/atm')
-rw-r--r-- | net/atm/mpc.c | 445 |
1 files changed, 252 insertions, 193 deletions
diff --git a/net/atm/mpc.c b/net/atm/mpc.c index 3c45aef47b7e..55dba22e44b3 100644 --- a/net/atm/mpc.c +++ b/net/atm/mpc.c @@ -15,8 +15,8 @@ #include <net/sock.h> #include <linux/skbuff.h> #include <linux/ip.h> +#include <linux/uaccess.h> #include <asm/byteorder.h> -#include <asm/uaccess.h> #include <net/checksum.h> /* for ip_fast_csum() */ #include <net/arp.h> #include <net/dst.h> @@ -38,15 +38,17 @@ */ #if 0 -#define dprintk printk /* debug */ +#define dprintk(format, args...) printk(KERN_DEBUG format, ##args) /* debug */ #else -#define dprintk(format,args...) +#define dprintk(format, args...) \ + do { if (0) printk(KERN_DEBUG format, ##args); } while (0) #endif #if 0 -#define ddprintk printk /* more debug */ +#define ddprintk printk(KERN_DEBUG format, ##args) /* more debug */ #else -#define ddprintk(format,args...) +#define ddprintk(format, args...) \ + do { if (0) printk(KERN_DEBUG format, ##args); } while (0) #endif @@ -54,15 +56,19 @@ #define MPOA_TAG_LEN 4 /* mpc_daemon -> kernel */ -static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc); +static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void mps_death(struct k_message *msg, struct mpoa_client *mpc); -static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action); -static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc); -static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); -static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); +static void clean_up(struct k_message *msg, struct mpoa_client *mpc, + int action); +static void MPOA_cache_impos_rcvd(struct k_message *msg, + struct mpoa_client *mpc); +static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, + struct mpoa_client *mpc); +static void set_mps_mac_addr_rcvd(struct k_message *mesg, + struct mpoa_client *mpc); static const uint8_t *copy_macs(struct mpoa_client *mpc, const uint8_t *router_mac, @@ -76,10 +82,11 @@ static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb); static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb); static netdev_tx_t mpc_send_packet(struct sk_buff *skb, - struct net_device *dev); -static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev); + struct net_device *dev); +static int mpoa_event_listener(struct notifier_block *mpoa_notifier, + unsigned long event, void *dev); static void mpc_timer_refresh(void); -static void mpc_cache_check( unsigned long checking_time ); +static void mpc_cache_check(unsigned long checking_time); static struct llc_snap_hdr llc_snap_mpoa_ctrl = { 0xaa, 0xaa, 0x03, @@ -169,7 +176,7 @@ struct atm_mpoa_qos *atm_mpoa_add_qos(__be32 dst_ip, struct atm_qos *qos) entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL); if (entry == NULL) { - printk("mpoa: atm_mpoa_add_qos: out of memory\n"); + pr_info("mpoa: out of memory\n"); return entry; } @@ -187,10 +194,9 @@ struct atm_mpoa_qos *atm_mpoa_search_qos(__be32 dst_ip) struct atm_mpoa_qos *qos; qos = qos_head; - while( qos != NULL ){ - if(qos->ipaddr == dst_ip) { + while (qos) { + if (qos->ipaddr == dst_ip) break; - } qos = qos->next; } @@ -202,10 +208,10 @@ struct atm_mpoa_qos *atm_mpoa_search_qos(__be32 dst_ip) */ int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry) { - struct atm_mpoa_qos *curr; - if (entry == NULL) return 0; + if (entry == NULL) + return 0; if (entry == qos_head) { qos_head = qos_head->next; kfree(entry); @@ -236,9 +242,17 @@ void atm_mpoa_disp_qos(struct seq_file *m) while (qos != NULL) { seq_printf(m, "%pI4\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n", - &qos->ipaddr, - qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu, - qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu); + &qos->ipaddr, + qos->qos.txtp.max_pcr, + qos->qos.txtp.pcr, + qos->qos.txtp.min_pcr, + qos->qos.txtp.max_cdv, + qos->qos.txtp.max_sdu, + qos->qos.rxtp.max_pcr, + qos->qos.rxtp.pcr, + qos->qos.rxtp.min_pcr, + qos->qos.rxtp.max_cdv, + qos->qos.rxtp.max_sdu); qos = qos->next; } } @@ -258,7 +272,7 @@ static struct mpoa_client *alloc_mpc(void) { struct mpoa_client *mpc; - mpc = kzalloc(sizeof (struct mpoa_client), GFP_KERNEL); + mpc = kzalloc(sizeof(struct mpoa_client), GFP_KERNEL); if (mpc == NULL) return NULL; rwlock_init(&mpc->ingress_lock); @@ -268,7 +282,7 @@ static struct mpoa_client *alloc_mpc(void) mpc->parameters.mpc_p1 = MPC_P1; mpc->parameters.mpc_p2 = MPC_P2; - memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3)); + memset(mpc->parameters.mpc_p3, 0, sizeof(mpc->parameters.mpc_p3)); mpc->parameters.mpc_p4 = MPC_P4; mpc->parameters.mpc_p5 = MPC_P5; mpc->parameters.mpc_p6 = MPC_P6; @@ -290,7 +304,7 @@ static void start_mpc(struct mpoa_client *mpc, struct net_device *dev) dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name); if (!dev->netdev_ops) - printk("mpoa: (%s) start_mpc not starting\n", dev->name); + pr_info("(%s) not starting\n", dev->name); else { mpc->old_ops = dev->netdev_ops; mpc->new_ops = *mpc->old_ops; @@ -321,25 +335,18 @@ static const char *mpoa_device_type_string(char type) __attribute__ ((unused)); static const char *mpoa_device_type_string(char type) { - switch(type) { + switch (type) { case NON_MPOA: return "non-MPOA device"; - break; case MPS: return "MPS"; - break; case MPC: return "MPC"; - break; case MPS_AND_MPC: return "both MPS and MPC"; - break; - default: - return "unspecified (non-MPOA) device"; - break; } - return ""; /* not reached */ + return "unspecified (non-MPOA) device"; } /* @@ -368,22 +375,24 @@ static void lane2_assoc_ind(struct net_device *dev, const u8 *mac_addr, dprintk("total length of all TLVs %d\n", sizeoftlvs); mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */ if (mpc == NULL) { - printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name); + pr_info("(%s) no mpc\n", dev->name); return; } end_of_tlvs = tlvs + sizeoftlvs; while (end_of_tlvs - tlvs >= 5) { - type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3]; + type = ((tlvs[0] << 24) | (tlvs[1] << 16) | + (tlvs[2] << 8) | tlvs[3]); length = tlvs[4]; tlvs += 5; dprintk(" type 0x%x length %02x\n", type, length); if (tlvs + length > end_of_tlvs) { - printk("TLV value extends past its buffer, aborting parse\n"); + pr_info("TLV value extends past its buffer, aborting parse\n"); return; } if (type == 0) { - printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name); + pr_info("mpoa: (%s) TLV type was 0, returning\n", + dev->name); return; } @@ -393,39 +402,47 @@ static void lane2_assoc_ind(struct net_device *dev, const u8 *mac_addr, } mpoa_device_type = *tlvs++; number_of_mps_macs = *tlvs++; - dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type)); + dprintk("mpoa: (%s) MPOA device type '%s', ", + dev->name, mpoa_device_type_string(mpoa_device_type)); if (mpoa_device_type == MPS_AND_MPC && length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */ - printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", - dev->name); + pr_info("(%s) short MPOA Device Type TLV\n", + dev->name); continue; } - if ((mpoa_device_type == MPS || mpoa_device_type == MPC) - && length < 22 + number_of_mps_macs*ETH_ALEN) { - printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", - dev->name); + if ((mpoa_device_type == MPS || mpoa_device_type == MPC) && + length < 22 + number_of_mps_macs*ETH_ALEN) { + pr_info("(%s) short MPOA Device Type TLV\n", dev->name); continue; } - if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) { + if (mpoa_device_type != MPS && + mpoa_device_type != MPS_AND_MPC) { dprintk("ignoring non-MPS device\n"); - if (mpoa_device_type == MPC) tlvs += 20; + if (mpoa_device_type == MPC) + tlvs += 20; continue; /* we are only interested in MPSs */ } - if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) { - printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name); + if (number_of_mps_macs == 0 && + mpoa_device_type == MPS_AND_MPC) { + pr_info("(%s) MPS_AND_MPC has zero MACs\n", dev->name); continue; /* someone should read the spec */ } dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs); - /* ok, now we can go and tell our daemon the control address of MPS */ + /* + * ok, now we can go and tell our daemon + * the control address of MPS + */ send_set_mps_ctrl_addr(tlvs, mpc); - tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type); - if (tlvs == NULL) return; + tlvs = copy_macs(mpc, mac_addr, tlvs, + number_of_mps_macs, mpoa_device_type); + if (tlvs == NULL) + return; } if (end_of_tlvs - tlvs != 0) - printk("mpoa: (%s) lane2_assoc_ind: ignoring %Zd bytes of trailing TLV carbage\n", - dev->name, end_of_tlvs - tlvs); + pr_info("(%s) ignoring %Zd bytes of trailing TLV garbage\n", + dev->name, end_of_tlvs - tlvs); return; } @@ -443,11 +460,12 @@ static const uint8_t *copy_macs(struct mpoa_client *mpc, num_macs = (mps_macs > 1) ? mps_macs : 1; if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */ - if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs); + if (mpc->number_of_mps_macs != 0) + kfree(mpc->mps_macs); mpc->number_of_mps_macs = 0; - mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL); + mpc->mps_macs = kmalloc(num_macs * ETH_ALEN, GFP_KERNEL); if (mpc->mps_macs == NULL) { - printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name); + pr_info("(%s) out of mem\n", mpc->dev->name); return NULL; } } @@ -480,24 +498,30 @@ static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc) iph = (struct iphdr *)buff; ipaddr = iph->daddr; - ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr); + ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", + mpc->dev->name, ipaddr); entry = mpc->in_ops->get(ipaddr, mpc); if (entry == NULL) { entry = mpc->in_ops->add_entry(ipaddr, mpc); - if (entry != NULL) mpc->in_ops->put(entry); + if (entry != NULL) + mpc->in_ops->put(entry); return 1; } - if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */ - ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name); + /* threshold not exceeded or VCC not ready */ + if (mpc->in_ops->cache_hit(entry, mpc) != OPEN) { + ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", + mpc->dev->name); mpc->in_ops->put(entry); return 1; } - ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name); + ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", + mpc->dev->name); /* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */ if (iph->ttl <= 1) { - ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl); + ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", + mpc->dev->name, iph->ttl); mpc->in_ops->put(entry); return 1; } @@ -506,15 +530,18 @@ static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc) iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); if (entry->ctrl_info.tag != 0) { - ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag); + ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", + mpc->dev->name, entry->ctrl_info.tag); tagged_llc_snap_hdr.tag = entry->ctrl_info.tag; - skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ - skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */ + skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ + skb_push(skb, sizeof(tagged_llc_snap_hdr)); + /* add LLC/SNAP header */ skb_copy_to_linear_data(skb, &tagged_llc_snap_hdr, sizeof(tagged_llc_snap_hdr)); } else { - skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ - skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */ + skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ + skb_push(skb, sizeof(struct llc_snap_hdr)); + /* add LLC/SNAP header + tag */ skb_copy_to_linear_data(skb, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)); } @@ -539,8 +566,8 @@ static netdev_tx_t mpc_send_packet(struct sk_buff *skb, int i = 0; mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ - if(mpc == NULL) { - printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name); + if (mpc == NULL) { + pr_info("(%s) no MPC found\n", dev->name); goto non_ip; } @@ -556,14 +583,15 @@ static netdev_tx_t mpc_send_packet(struct sk_buff *skb, goto non_ip; while (i < mpc->number_of_mps_macs) { - if (!compare_ether_addr(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN))) - if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */ - return NETDEV_TX_OK; /* success! */ + if (!compare_ether_addr(eth->h_dest, + (mpc->mps_macs + i*ETH_ALEN))) + if (send_via_shortcut(skb, mpc) == 0) /* try shortcut */ + return NETDEV_TX_OK; i++; } - non_ip: - return mpc->old_ops->ndo_start_xmit(skb,dev); +non_ip: + return mpc->old_ops->ndo_start_xmit(skb, dev); } static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg) @@ -576,7 +604,8 @@ static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg) bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmmpc_ioc)); if (bytes_left != 0) { - printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left); + pr_info("mpoa:Short read (missed %d bytes) from userland\n", + bytes_left); return -EFAULT; } ipaddr = ioc_data.ipaddr; @@ -589,18 +618,20 @@ static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg) if (ioc_data.type == MPC_SOCKET_INGRESS) { in_entry = mpc->in_ops->get(ipaddr, mpc); - if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) { - printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n", + if (in_entry == NULL || + in_entry->entry_state < INGRESS_RESOLVED) { + pr_info("(%s) did not find RESOLVED entry from ingress cache\n", mpc->dev->name); - if (in_entry != NULL) mpc->in_ops->put(in_entry); + if (in_entry != NULL) + mpc->in_ops->put(in_entry); return -EINVAL; } - printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %pI4\n", - mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); + pr_info("(%s) attaching ingress SVC, entry = %pI4\n", + mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); in_entry->shortcut = vcc; mpc->in_ops->put(in_entry); } else { - printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name); + pr_info("(%s) attaching egress SVC\n", mpc->dev->name); } vcc->proto_data = mpc->dev; @@ -620,7 +651,7 @@ static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev) mpc = find_mpc_by_lec(dev); if (mpc == NULL) { - printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name); + pr_info("(%s) close for unknown MPC\n", dev->name); return; } @@ -628,19 +659,21 @@ static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev) in_entry = mpc->in_ops->get_by_vcc(vcc, mpc); if (in_entry) { dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %pI4\n", - mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); + mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); in_entry->shortcut = NULL; mpc->in_ops->put(in_entry); } eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc); if (eg_entry) { - dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name); + dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", + mpc->dev->name); eg_entry->shortcut = NULL; mpc->eg_ops->put(eg_entry); } if (in_entry == NULL && eg_entry == NULL) - dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name); + dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", + dev->name); return; } @@ -656,16 +689,19 @@ static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) ddprintk("mpoa: (%s) mpc_push:\n", dev->name); if (skb == NULL) { - dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name); + dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", + dev->name); mpc_vcc_close(vcc, dev); return; } skb->dev = dev; - if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) { + if (memcmp(skb->data, &llc_snap_mpoa_ctrl, + sizeof(struct llc_snap_hdr)) == 0) { struct sock *sk = sk_atm(vcc); - dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name); + dprintk("mpoa: (%s) mpc_push: control packet arrived\n", + dev->name); /* Pass control packets to daemon */ skb_queue_tail(&sk->sk_receive_queue, skb); sk->sk_data_ready(sk, skb->len); @@ -677,20 +713,23 @@ static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) mpc = find_mpc_by_lec(dev); if (mpc == NULL) { - printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name); + pr_info("(%s) unknown MPC\n", dev->name); return; } - if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */ - ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name); + if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, + sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */ + ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", + dev->name); - } else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */ - printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name); - printk(" mpc_push: non-tagged data unsupported, purging\n"); + } else if (memcmp(skb->data, &llc_snap_mpoa_data, + sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */ + pr_info("(%s) Unsupported non-tagged data packet arrived. Purging\n", + dev->name); dev_kfree_skb_any(skb); return; } else { - printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name); + pr_info("(%s) garbage arrived, purging\n", dev->name); dev_kfree_skb_any(skb); return; } @@ -700,8 +739,8 @@ static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) eg = mpc->eg_ops->get_by_tag(tag, mpc); if (eg == NULL) { - printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n", - dev->name,tag); + pr_info("mpoa: (%s) Didn't find egress cache entry, tag = %u\n", + dev->name, tag); purge_egress_shortcut(vcc, NULL); dev_kfree_skb_any(skb); return; @@ -713,13 +752,15 @@ static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) */ if (eg->shortcut == NULL) { eg->shortcut = vcc; - printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name); + pr_info("(%s) egress SVC in use\n", dev->name); } - skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */ - new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */ + skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); + /* get rid of LLC/SNAP header */ + new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); + /* LLC/SNAP is shorter than MAC header :( */ dev_kfree_skb_any(skb); - if (new_skb == NULL){ + if (new_skb == NULL) { mpc->eg_ops->put(eg); return; } @@ -752,7 +793,7 @@ static struct atm_dev mpc_dev = { /* members not explicitly initialised will be 0 */ }; -static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) +static int atm_mpoa_mpoad_attach(struct atm_vcc *vcc, int arg) { struct mpoa_client *mpc; struct lec_priv *priv; @@ -772,15 +813,17 @@ static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) mpc = find_mpc_by_itfnum(arg); if (mpc == NULL) { - dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg); + dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", + arg); mpc = alloc_mpc(); if (mpc == NULL) return -ENOMEM; mpc->dev_num = arg; - mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */ + mpc->dev = find_lec_by_itfnum(arg); + /* NULL if there was no lec */ } if (mpc->mpoad_vcc) { - printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg); + pr_info("mpoad is already present for itf %d\n", arg); return -EADDRINUSE; } @@ -796,8 +839,8 @@ static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) mpc->mpoad_vcc = vcc; vcc->dev = &mpc_dev; vcc_insert_socket(sk_atm(vcc)); - set_bit(ATM_VF_META,&vcc->flags); - set_bit(ATM_VF_READY,&vcc->flags); + set_bit(ATM_VF_META, &vcc->flags); + set_bit(ATM_VF_READY, &vcc->flags); if (mpc->dev) { char empty[ATM_ESA_LEN]; @@ -807,7 +850,7 @@ static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) /* set address if mpcd e.g. gets killed and restarted. * If we do not do it now we have to wait for the next LE_ARP */ - if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 ) + if (memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0) send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc); } @@ -819,7 +862,7 @@ static void send_set_mps_ctrl_addr(const char *addr, struct mpoa_client *mpc) { struct k_message mesg; - memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN); + memcpy(mpc->mps_ctrl_addr, addr, ATM_ESA_LEN); mesg.type = SET_MPS_CTRL_ADDR; memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN); @@ -835,11 +878,11 @@ static void mpoad_close(struct atm_vcc *vcc) mpc = find_mpc_by_vcc(vcc); if (mpc == NULL) { - printk("mpoa: mpoad_close: did not find MPC\n"); + pr_info("did not find MPC\n"); return; } if (!mpc->mpoad_vcc) { - printk("mpoa: mpoad_close: close for non-present mpoad\n"); + pr_info("close for non-present mpoad\n"); return; } @@ -859,7 +902,7 @@ static void mpoad_close(struct atm_vcc *vcc) kfree_skb(skb); } - printk("mpoa: (%s) going down\n", + pr_info("(%s) going down\n", (mpc->dev) ? mpc->dev->name : "<unknown>"); module_put(THIS_MODULE); @@ -873,15 +916,16 @@ static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb) { struct mpoa_client *mpc = find_mpc_by_vcc(vcc); - struct k_message *mesg = (struct k_message*)skb->data; + struct k_message *mesg = (struct k_message *)skb->data; atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); if (mpc == NULL) { - printk("mpoa: msg_from_mpoad: no mpc found\n"); + pr_info("no mpc found\n"); return 0; } - dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>"); - switch(mesg->type) { + dprintk("mpoa: (%s) msg_from_mpoad:", + (mpc->dev) ? mpc->dev->name : "<unknown>"); + switch (mesg->type) { case MPOA_RES_REPLY_RCVD: dprintk(" mpoa_res_reply_rcvd\n"); MPOA_res_reply_rcvd(mesg, mpc); @@ -942,7 +986,7 @@ int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc) struct sock *sk; if (mpc == NULL || !mpc->mpoad_vcc) { - printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type); + pr_info("mesg %d to a non-existent mpoad\n", mesg->type); return -ENXIO; } @@ -960,7 +1004,8 @@ int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc) return 0; } -static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr) +static int mpoa_event_listener(struct notifier_block *mpoa_notifier, + unsigned long event, void *dev_ptr) { struct net_device *dev; struct mpoa_client *mpc; @@ -983,10 +1028,10 @@ static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned lo mpc = find_mpc_by_itfnum(priv->itfnum); if (mpc == NULL) { dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n", - dev->name); + dev->name); mpc = alloc_mpc(); if (mpc == NULL) { - printk("mpoa: mpoa_event_listener: no new mpc"); + pr_info("no new mpc"); break; } } @@ -1010,9 +1055,8 @@ static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned lo mpc = find_mpc_by_lec(dev); if (mpc == NULL) break; - if (mpc->mpoad_vcc != NULL) { + if (mpc->mpoad_vcc != NULL) start_mpc(mpc, dev); - } break; case NETDEV_DOWN: /* the dev was ifconfig'ed down */ @@ -1022,9 +1066,8 @@ static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned lo mpc = find_mpc_by_lec(dev); if (mpc == NULL) break; - if (mpc->mpoad_vcc != NULL) { + if (mpc->mpoad_vcc != NULL) stop_mpc(mpc); - } break; case NETDEV_REBOOT: case NETDEV_CHANGE: @@ -1051,7 +1094,7 @@ static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) in_cache_entry *entry; entry = mpc->in_ops->get(dst_ip, mpc); - if(entry == NULL){ + if (entry == NULL) { entry = mpc->in_ops->add_entry(dst_ip, mpc); entry->entry_state = INGRESS_RESOLVING; msg->type = SND_MPOA_RES_RQST; @@ -1062,7 +1105,7 @@ static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) return; } - if(entry->entry_state == INGRESS_INVALID){ + if (entry->entry_state == INGRESS_INVALID) { entry->entry_state = INGRESS_RESOLVING; msg->type = SND_MPOA_RES_RQST; msg->content.in_info = entry->ctrl_info; @@ -1072,7 +1115,7 @@ static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) return; } - printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n", + pr_info("(%s) entry already in resolving state\n", (mpc->dev) ? mpc->dev->name : "<unknown>"); mpc->in_ops->put(entry); return; @@ -1082,22 +1125,24 @@ static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) * Things get complicated because we have to check if there's an egress * shortcut with suitable traffic parameters we could use. */ -static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry) +static void check_qos_and_open_shortcut(struct k_message *msg, + struct mpoa_client *client, + in_cache_entry *entry) { __be32 dst_ip = msg->content.in_info.in_dst_ip; struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip); eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client); - if(eg_entry && eg_entry->shortcut){ - if(eg_entry->shortcut->qos.txtp.traffic_class & - msg->qos.txtp.traffic_class & - (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){ - if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR) - entry->shortcut = eg_entry->shortcut; - else if(eg_entry->shortcut->qos.txtp.max_pcr > 0) - entry->shortcut = eg_entry->shortcut; + if (eg_entry && eg_entry->shortcut) { + if (eg_entry->shortcut->qos.txtp.traffic_class & + msg->qos.txtp.traffic_class & + (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)) { + if (eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR) + entry->shortcut = eg_entry->shortcut; + else if (eg_entry->shortcut->qos.txtp.max_pcr > 0) + entry->shortcut = eg_entry->shortcut; } - if(entry->shortcut){ + if (entry->shortcut) { dprintk("mpoa: (%s) using egress SVC to reach %pI4\n", client->dev->name, &dst_ip); client->eg_ops->put(eg_entry); @@ -1109,12 +1154,13 @@ static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_clien /* No luck in the egress cache we must open an ingress SVC */ msg->type = OPEN_INGRESS_SVC; - if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class)) - { + if (qos && + (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class)) { msg->qos = qos->qos; - printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name); - } - else memset(&msg->qos,0,sizeof(struct atm_qos)); + pr_info("(%s) trying to get a CBR shortcut\n", + client->dev->name); + } else + memset(&msg->qos, 0, sizeof(struct atm_qos)); msg_to_mpoad(msg, client); return; } @@ -1126,15 +1172,17 @@ static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc) dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %pI4\n", mpc->dev->name, &dst_ip); - ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry); - if(entry == NULL){ - printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name); + ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", + mpc->dev->name, entry); + if (entry == NULL) { + pr_info("(%s) ARGH, received res. reply for an entry that doesn't exist.\n", + mpc->dev->name); return; } ddprintk(" entry_state = %d ", entry->entry_state); if (entry->entry_state == INGRESS_RESOLVED) { - printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name); + pr_info("(%s) RESOLVED entry!\n", mpc->dev->name); mpc->in_ops->put(entry); return; } @@ -1145,15 +1193,16 @@ static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc) entry->refresh_time = 0; ddprintk("entry->shortcut = %p\n", entry->shortcut); - if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){ + if (entry->entry_state == INGRESS_RESOLVING && + entry->shortcut != NULL) { entry->entry_state = INGRESS_RESOLVED; mpc->in_ops->put(entry); return; /* Shortcut already open... */ } if (entry->shortcut != NULL) { - printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n", - mpc->dev->name); + pr_info("(%s) entry->shortcut != NULL, impossible!\n", + mpc->dev->name); mpc->in_ops->put(entry); return; } @@ -1172,9 +1221,9 @@ static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) __be32 mask = msg->ip_mask; in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); - if(entry == NULL){ - printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ip = %pI4\n", - mpc->dev->name, &dst_ip); + if (entry == NULL) { + pr_info("(%s) purge for a non-existing entry, ip = %pI4\n", + mpc->dev->name, &dst_ip); return; } @@ -1197,7 +1246,8 @@ static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc); if (entry == NULL) { - dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name); + dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", + mpc->dev->name); return; } @@ -1218,13 +1268,13 @@ static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry) dprintk("mpoa: purge_egress_shortcut: entering\n"); if (vcc == NULL) { - printk("mpoa: purge_egress_shortcut: vcc == NULL\n"); + pr_info("vcc == NULL\n"); return; } skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); if (skb == NULL) { - printk("mpoa: purge_egress_shortcut: out of memory\n"); + pr_info("out of memory\n"); return; } @@ -1249,14 +1299,14 @@ static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry) * Our MPS died. Tell our daemon to send NHRP data plane purge to each * of the egress shortcuts we have. */ -static void mps_death( struct k_message * msg, struct mpoa_client * mpc ) +static void mps_death(struct k_message *msg, struct mpoa_client *mpc) { eg_cache_entry *entry; dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name); - if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){ - printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name); + if (memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)) { + pr_info("(%s) wrong MPS\n", mpc->dev->name); return; } @@ -1275,20 +1325,21 @@ static void mps_death( struct k_message * msg, struct mpoa_client * mpc ) return; } -static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc) +static void MPOA_cache_impos_rcvd(struct k_message *msg, + struct mpoa_client *mpc) { uint16_t holding_time; eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc); holding_time = msg->content.eg_info.holding_time; dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n", - mpc->dev->name, entry, holding_time); - if(entry == NULL && holding_time) { + mpc->dev->name, entry, holding_time); + if (entry == NULL && holding_time) { entry = mpc->eg_ops->add_entry(msg, mpc); mpc->eg_ops->put(entry); return; } - if(holding_time){ + if (holding_time) { mpc->eg_ops->update(entry, holding_time); return; } @@ -1302,7 +1353,8 @@ static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * return; } -static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc) +static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, + struct mpoa_client *mpc) { struct lec_priv *priv; int i, retval ; @@ -1318,33 +1370,38 @@ static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *m memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN); dprintk("mpoa: (%s) setting MPC ctrl ATM address to ", - (mpc->dev) ? mpc->dev->name : "<unknown>"); + (mpc->dev) ? mpc->dev->name : "<unknown>"); for (i = 7; i < sizeof(tlv); i++) dprintk("%02x ", tlv[i]); dprintk("\n"); if (mpc->dev) { priv = netdev_priv(mpc->dev); - retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv)); + retval = priv->lane2_ops->associate_req(mpc->dev, + mpc->dev->dev_addr, + tlv, sizeof(tlv)); if (retval == 0) - printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name); + pr_info("(%s) MPOA device type TLV association failed\n", + mpc->dev->name); retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL); if (retval < 0) - printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name); + pr_info("(%s) targetless LE_ARP request failed\n", + mpc->dev->name); } return; } -static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client) +static void set_mps_mac_addr_rcvd(struct k_message *msg, + struct mpoa_client *client) { - if(client->number_of_mps_macs) + if (client->number_of_mps_macs) kfree(client->mps_macs); client->number_of_mps_macs = 0; client->mps_macs = kmemdup(msg->MPS_ctrl, ETH_ALEN, GFP_KERNEL); if (client->mps_macs == NULL) { - printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n"); + pr_info("out of memory\n"); return; } client->number_of_mps_macs = 1; @@ -1365,11 +1422,11 @@ static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action) /* FIXME: This knows too much of the cache structure */ read_lock_irq(&mpc->egress_lock); entry = mpc->eg_cache; - while (entry != NULL){ - msg->content.eg_info = entry->ctrl_info; - dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id); - msg_to_mpoad(msg, mpc); - entry = entry->next; + while (entry != NULL) { + msg->content.eg_info = entry->ctrl_info; + dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id); + msg_to_mpoad(msg, mpc); + entry = entry->next; } read_unlock_irq(&mpc->egress_lock); @@ -1388,20 +1445,22 @@ static void mpc_timer_refresh(void) return; } -static void mpc_cache_check( unsigned long checking_time ) +static void mpc_cache_check(unsigned long checking_time) |