cregit-Linux how code gets into the kernel

Release 4.7 net/irda/irlan/irlan_common.c

Directory: net/irda/irlan
/*********************************************************************
 *
 * Filename:      irlan_common.c
 * Version:       0.9
 * Description:   IrDA LAN Access Protocol Implementation
 * Status:        Experimental.
 * Author:        Dag Brattli <dagb@cs.uit.no>
 * Created at:    Sun Aug 31 20:14:37 1997
 * Modified at:   Sun Dec 26 21:53:10 1999
 * Modified by:   Dag Brattli <dagb@cs.uit.no>
 *
 *     Copyright (c) 1997, 1999 Dag Brattli <dagb@cs.uit.no>,
 *     All Rights Reserved.
 *
 *     This program is free software; you can redistribute it and/or
 *     modify it under the terms of the GNU General Public License as
 *     published by the Free Software Foundation; either version 2 of
 *     the License, or (at your option) any later version.
 *
 *     Neither Dag Brattli nor University of Tromsø admit liability nor
 *     provide warranty for any of this software. This material is
 *     provided "AS-IS" and at no charge.
 *
 ********************************************************************/

#include <linux/module.h>

#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/gfp.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/proc_fs.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/random.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <linux/moduleparam.h>
#include <linux/bitops.h>

#include <asm/byteorder.h>

#include <net/irda/irda.h>
#include <net/irda/irttp.h>
#include <net/irda/irlmp.h>
#include <net/irda/iriap.h>
#include <net/irda/timer.h>

#include <net/irda/irlan_common.h>
#include <net/irda/irlan_client.h>
#include <net/irda/irlan_provider.h>
#include <net/irda/irlan_eth.h>
#include <net/irda/irlan_filter.h>


/* extern char sysctl_devname[]; */

/*
 *  Master structure
 */
static LIST_HEAD(irlans);


static void *ckey;

static void *skey;

/* Module parameters */

static bool eth;   
/* Use "eth" or "irlan" name for devices */

static int access = ACCESS_PEER; 
/* PEER, DIRECT or HOSTED */

#ifdef CONFIG_PROC_FS

static const char *const irlan_access[] = {
	"UNKNOWN",
	"DIRECT",
	"PEER",
	"HOSTED"
};


static const char *const irlan_media[] = {
	"UNKNOWN",
	"802.3",
	"802.5"
};

extern struct proc_dir_entry *proc_irda;

static int irlan_seq_open(struct inode *inode, struct file *file);


static const struct file_operations irlan_fops = {
	.owner	 = THIS_MODULE,
	.open    = irlan_seq_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release,
};

extern struct proc_dir_entry *proc_irda;
#endif /* CONFIG_PROC_FS */

static struct irlan_cb __init *irlan_open(__u32 saddr, __u32 daddr);
static void __irlan_close(struct irlan_cb *self);
static int __irlan_insert_param(struct sk_buff *skb, char *param, int type,
				__u8 value_byte, __u16 value_short,
				__u8 *value_array, __u16 value_len);
static void irlan_open_unicast_addr(struct irlan_cb *self);
static void irlan_get_unicast_addr(struct irlan_cb *self);
void irlan_close_tsaps(struct irlan_cb *self);

/*
 * Function irlan_init (void)
 *
 *    Initialize IrLAN layer
 *
 */

static int __init irlan_init(void) { struct irlan_cb *new; __u16 hints; #ifdef CONFIG_PROC_FS { struct proc_dir_entry *proc; proc = proc_create("irlan", 0, proc_irda, &irlan_fops); if (!proc) { printk(KERN_ERR "irlan_init: can't create /proc entry!\n"); return -ENODEV; } } #endif /* CONFIG_PROC_FS */ hints = irlmp_service_to_hint(S_LAN); /* Register with IrLMP as a client */ ckey = irlmp_register_client(hints, &irlan_client_discovery_indication, NULL, NULL); if (!ckey) goto err_ckey; /* Register with IrLMP as a service */ skey = irlmp_register_service(hints); if (!skey) goto err_skey; /* Start the master IrLAN instance (the only one for now) */ new = irlan_open(DEV_ADDR_ANY, DEV_ADDR_ANY); if (!new) goto err_open; /* The master will only open its (listen) control TSAP */ irlan_provider_open_ctrl_tsap(new); /* Do some fast discovery! */ irlmp_discovery_request(DISCOVERY_DEFAULT_SLOTS); return 0; err_open: irlmp_unregister_service(skey); err_skey: irlmp_unregister_client(ckey); err_ckey: #ifdef CONFIG_PROC_FS remove_proc_entry("irlan", proc_irda); #endif /* CONFIG_PROC_FS */ return -ENOMEM; }

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akinobu mitaakinobu mita5732.95%18.33%
stephen hemmingerstephen hemminger2615.03%18.33%
wang chenwang chen42.31%18.33%
jean tourrilhesjean tourrilhes10.58%18.33%
Total173100.00%12100.00%


static void __exit irlan_cleanup(void) { struct irlan_cb *self, *next; irlmp_unregister_client(ckey); irlmp_unregister_service(skey); #ifdef CONFIG_PROC_FS remove_proc_entry("irlan", proc_irda); #endif /* CONFIG_PROC_FS */ /* Cleanup any leftover network devices */ rtnl_lock(); list_for_each_entry_safe(self, next, &irlans, dev_list) { __irlan_close(self); } rtnl_unlock(); }

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stephen hemmingerstephen hemminger2742.19%116.67%
jean tourrilhesjean tourrilhes23.12%233.33%
Total64100.00%6100.00%

/* * Function irlan_open (void) * * Open new instance of a client/provider, we should only register the * network device if this instance is ment for a particular client/provider */
static struct irlan_cb __init *irlan_open(__u32 saddr, __u32 daddr) { struct net_device *dev; struct irlan_cb *self; /* Create network device with irlan */ dev = alloc_irlandev(eth ? "eth%d" : "irlan%d"); if (!dev) return NULL; self = netdev_priv(dev); self->dev = dev; /* * Initialize local device structure */ self->magic = IRLAN_MAGIC; self->saddr = saddr; self->daddr = daddr; /* Provider access can only be PEER, DIRECT, or HOSTED */ self->provider.access_type = access; if (access == ACCESS_DIRECT) { /* * Since we are emulating an IrLAN sever we will have to * give ourself an ethernet address! */ dev->dev_addr[0] = 0x40; dev->dev_addr[1] = 0x00; dev->dev_addr[2] = 0x00; dev->dev_addr[3] = 0x00; get_random_bytes(dev->dev_addr+4, 1); get_random_bytes(dev->dev_addr+5, 1); } self->media = MEDIA_802_3; self->disconnect_reason = LM_USER_REQUEST; init_timer(&self->watchdog_timer); init_timer(&self->client.kick_timer); init_waitqueue_head(&self->open_wait); skb_queue_head_init(&self->client.txq); irlan_next_client_state(self, IRLAN_IDLE); irlan_next_provider_state(self, IRLAN_IDLE); if (register_netdev(dev)) { pr_debug("%s(), register_netdev() failed!\n", __func__); self = NULL; free_netdev(dev); } else { rtnl_lock(); list_add_rcu(&self->dev_list, &irlans); rtnl_unlock(); } return self; }

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jean tourrilhesjean tourrilhes6725.48%17.14%
stephen hemmingerstephen hemminger5621.29%17.14%
wang chenwang chen31.14%17.14%
adrian bunkadrian bunk10.38%17.14%
al viroal viro10.38%17.14%
joe perchesjoe perches10.38%17.14%
hideaki yoshifujihideaki yoshifuji10.38%17.14%
harvey harrisonharvey harrison10.38%17.14%
fabian frederickfabian frederick10.38%17.14%
Total263100.00%14100.00%

/* * Function __irlan_close (self) * * This function closes and deallocates the IrLAN client instances. Be * aware that other functions which calls client_close() must * remove self from irlans list first. */
static void __irlan_close(struct irlan_cb *self) { ASSERT_RTNL(); IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); del_timer_sync(&self->watchdog_timer); del_timer_sync(&self->client.kick_timer); /* Close all open connections and remove TSAPs */ irlan_close_tsaps(self); if (self->client.iriap) iriap_close(self->client.iriap); /* Remove frames queued on the control channel */ skb_queue_purge(&self->client.txq); /* Unregister and free self via destructor */ unregister_netdevice(self->dev); }

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stephen hemmingerstephen hemminger55.68%225.00%
jean tourrilhesjean tourrilhes55.68%337.50%
Total88100.00%8100.00%

/* Find any instance of irlan, used for client discovery wakeup */
struct irlan_cb *irlan_get_any(void) { struct irlan_cb *self; list_for_each_entry_rcu(self, &irlans, dev_list) { return self; } return NULL; }

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Total30100.00%1100.00%

/* * Function irlan_connect_indication (instance, sap, qos, max_sdu_size, skb) * * Here we receive the connect indication for the data channel * */
static void irlan_connect_indication(void *instance, void *sap, struct qos_info *qos, __u32 max_sdu_size, __u8 max_header_size, struct sk_buff *skb) { struct irlan_cb *self; struct tsap_cb *tsap; self = instance; tsap = sap; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); IRDA_ASSERT(tsap == self->tsap_data,return;); self->max_sdu_size = max_sdu_size; self->max_header_size = max_header_size; pr_debug("%s: We are now connected!\n", __func__); del_timer(&self->watchdog_timer); /* If you want to pass the skb to *both* state machines, you will * need to skb_clone() it, so that you don't free it twice. * As the state machines don't need it, git rid of it here... * Jean II */ if (skb) dev_kfree_skb(skb); irlan_do_provider_event(self, IRLAN_DATA_CONNECT_INDICATION, NULL); irlan_do_client_event(self, IRLAN_DATA_CONNECT_INDICATION, NULL); if (self->provider.access_type == ACCESS_PEER) { /* * Data channel is open, so we are now allowed to * configure the remote filter */ irlan_get_unicast_addr(self); irlan_open_unicast_addr(self); } /* Ready to transfer Ethernet frames (at last) */ netif_start_queue(self->dev); /* Clear reason */ }

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jean tourrilhesjean tourrilhes53.21%216.67%
adrian bunkadrian bunk10.64%18.33%
hideaki yoshifujihideaki yoshifuji10.64%18.33%
joe perchesjoe perches10.64%18.33%
harvey harrisonharvey harrison10.64%18.33%
Total156100.00%12100.00%


static void irlan_connect_confirm(void *instance, void *sap, struct qos_info *qos, __u32 max_sdu_size, __u8 max_header_size, struct sk_buff *skb) { struct irlan_cb *self; self = instance; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); self->max_sdu_size = max_sdu_size; self->max_header_size = max_header_size; /* TODO: we could set the MTU depending on the max_sdu_size */ pr_debug("%s: We are now connected!\n", __func__); del_timer(&self->watchdog_timer); /* * Data channel is open, so we are now allowed to configure the remote * filter */ irlan_get_unicast_addr(self); irlan_open_unicast_addr(self); /* Open broadcast and multicast filter by default */ irlan_set_broadcast_filter(self, TRUE); irlan_set_multicast_filter(self, TRUE); /* Ready to transfer Ethernet frames */ netif_start_queue(self->dev); self->disconnect_reason = 0; /* Clear reason */ wake_up_interruptible(&self->open_wait); }

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pre-gitpre-git12394.62%650.00%
jean tourrilhesjean tourrilhes32.31%216.67%
joe perchesjoe perches10.77%18.33%
hideaki yoshifujihideaki yoshifuji10.77%18.33%
adrian bunkadrian bunk10.77%18.33%
harvey harrisonharvey harrison10.77%18.33%
Total130100.00%12100.00%

/* * Function irlan_client_disconnect_indication (handle) * * Callback function for the IrTTP layer. Indicates a disconnection of * the specified connection (handle) */
static void irlan_disconnect_indication(void *instance, void *sap, LM_REASON reason, struct sk_buff *userdata) { struct irlan_cb *self; struct tsap_cb *tsap; pr_debug("%s(), reason=%d\n", __func__ , reason); self = instance; tsap = sap; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); IRDA_ASSERT(tsap != NULL, return;); IRDA_ASSERT(tsap->magic == TTP_TSAP_MAGIC, return;); IRDA_ASSERT(tsap == self->tsap_data, return;); pr_debug("IrLAN, data channel disconnected by peer!\n"); /* Save reason so we know if we should try to reconnect or not */ self->disconnect_reason = reason; switch (reason) { case LM_USER_REQUEST: /* User request */ pr_debug("%s(), User requested\n", __func__); break; case LM_LAP_DISCONNECT: /* Unexpected IrLAP disconnect */ pr_debug("%s(), Unexpected IrLAP disconnect\n", __func__); break; case LM_CONNECT_FAILURE: /* Failed to establish IrLAP connection */ pr_debug("%s(), IrLAP connect failed\n", __func__); break; case LM_LAP_RESET: /* IrLAP reset */ pr_debug("%s(), IrLAP reset\n", __func__); break; case LM_INIT_DISCONNECT: pr_debug("%s(), IrLMP connect failed\n", __func__); break; default: net_err_ratelimited("%s(), Unknown disconnect reason\n", __func__); break; } /* If you want to pass the skb to *both* state machines, you will * need to skb_clone() it, so that you don't free it twice. * As the state machines don't need it, git rid of it here... * Jean II */ if (userdata) dev_kfree_skb(userdata); irlan_do_client_event(self, IRLAN_LMP_DISCONNECT, NULL); irlan_do_provider_event(self, IRLAN_LMP_DISCONNECT, NULL); wake_up_interruptible(&self->open_wait); }

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pre-gitpre-git16178.16%327.27%
jean tourrilhesjean tourrilhes178.25%218.18%
linus torvaldslinus torvalds104.85%19.09%
joe perchesjoe perches83.88%218.18%
harvey harrisonharvey harrison73.40%19.09%
jeff garzikjeff garzik20.97%19.09%
adrian bunkadrian bunk10.49%19.09%
Total206100.00%11100.00%


void irlan_open_data_tsap(struct irlan_cb *self) { struct tsap_cb *tsap; notify_t notify; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); /* Check if already open */ if (self->tsap_data) return; irda_notify_init(&notify); notify.data_indication = irlan_eth_receive; notify.udata_indication = irlan_eth_receive; notify.connect_indication = irlan_connect_indication; notify.connect_confirm = irlan_connect_confirm; notify.flow_indication = irlan_eth_flow_indication; notify.disconnect_indication = irlan_disconnect_indication; notify.instance = self; strlcpy(notify.name, "IrLAN data", sizeof(notify.name)); tsap = irttp_open_tsap(LSAP_ANY, DEFAULT_INITIAL_CREDIT, &notify); if (!tsap) { pr_debug("%s(), Got no tsap!\n", __func__); return; } self->tsap_data = tsap; /* * This is the data TSAP selector which we will pass to the client * when the client ask for it. */ self->stsap_sel_data = self->tsap_data->stsap_sel; }

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jean tourrilhesjean tourrilhes106.76%333.33%
ben collinsben collins74.73%111.11%
harvey harrisonharvey harrison10.68%111.11%
joe perchesjoe perches10.68%111.11%
hideaki yoshifujihideaki yoshifuji10.68%111.11%
Total148100.00%9100.00%


void irlan_close_tsaps(struct irlan_cb *self) { IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); /* Disconnect and close all open TSAP connections */ if (self->tsap_data) { irttp_disconnect_request(self->tsap_data, NULL, P_NORMAL); irttp_close_tsap(self->tsap_data); self->tsap_data = NULL; } if (self->client.tsap_ctrl) { irttp_disconnect_request(self->client.tsap_ctrl, NULL, P_NORMAL); irttp_close_tsap(self->client.tsap_ctrl); self->client.tsap_ctrl = NULL; } if (self->provider.tsap_ctrl) { irttp_disconnect_request(self->provider.tsap_ctrl, NULL, P_NORMAL); irttp_close_tsap(self->provider.tsap_ctrl); self->provider.tsap_ctrl = NULL; } self->disconnect_reason = LM_USER_REQUEST; }

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/* * Function irlan_ias_register (self, tsap_sel) * * Register with LM-IAS * */
void irlan_ias_register(struct irlan_cb *self, __u8 tsap_sel) { struct ias_object *obj; struct ias_value *new_value; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); /* * Check if object has already been registered by a previous provider. * If that is the case, we just change the value of the attribute */ if (!irias_find_object("IrLAN")) { obj = irias_new_object("IrLAN", IAS_IRLAN_ID); irias_add_integer_attrib(obj, "IrDA:TinyTP:LsapSel", tsap_sel, IAS_KERNEL_ATTR); irias_insert_object(obj); } else { new_value = irias_new_integer_value(tsap_sel); irias_object_change_attribute("IrLAN", "IrDA:TinyTP:LsapSel", new_value); } /* Register PnP object only if not registered before */ if (!irias_find_object("PnP")) { obj = irias_new_object("PnP", IAS_PNP_ID); #if 0 irias_add_string_attrib(obj, "Name", sysctl_devname, IAS_KERNEL_ATTR); #else irias_add_string_attrib(obj, "Name", "Linux", IAS_KERNEL_ATTR); #endif irias_add_string_attrib(obj, "DeviceID", "HWP19F0", IAS_KERNEL_ATTR); irias_add_integer_attrib(obj, "CompCnt", 1, IAS_KERNEL_ATTR); if (self->provider.access_type == ACCESS_PEER) irias_add_string_attrib(obj, "Comp#01", "PNP8389", IAS_KERNEL_ATTR); else irias_add_string_attrib(obj, "Comp#01", "PNP8294", IAS_KERNEL_ATTR); irias_add_string_attrib(obj, "Manufacturer", "Linux-IrDA Project", IAS_KERNEL_ATTR); irias_insert_object(obj); } }

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hideaki yoshifujihideaki yoshifuji10.50%112.50%
steven colesteven cole10.50%112.50%
Total202100.00%8100.00%

/* * Function irlan_run_ctrl_tx_queue (self) * * Try to send the next command in the control transmit queue * */
int irlan_run_ctrl_tx_queue(struct irlan_cb *self) { struct sk_buff *skb; if (irda_lock(&self->client.tx_busy) == FALSE) return -EBUSY; skb = skb_dequeue(&self->client.txq); if (!skb) { self->client.tx_busy = FALSE; return 0; } /* Check that it's really possible to send commands */ if ((self->client.tsap_ctrl == NULL) || (self->client.state == IRLAN_IDLE)) { self->client.tx_busy = FALSE; dev_kfree_skb(skb); return -1; } pr_debug("%s(), sending ...\n", __func__); return irttp_data_request(self->client.tsap_ctrl, skb); }

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joe perchesjoe perches10.81%120.00%
harvey harrisonharvey harrison10.81%120.00%
Total124100.00%5100.00%

/* * Function irlan_ctrl_data_request (self, skb) * * This function makes sure that commands on the control channel is being * sent in a command/response fashion */
static void irlan_ctrl_data_request(struct irlan_cb *self, struct sk_buff *skb) { /* Queue command */ skb_queue_tail(&self->client.txq, skb); /* Try to send command */ irlan_run_ctrl_tx_queue(self); }

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/* * Function irlan_get_provider_info (self) * * Send Get Provider Information command to peer IrLAN layer * */
void irlan_get_provider_info(struct irlan_cb *self) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER, GFP_ATOMIC); if (!skb) return; /* Reserve space for TTP, LMP, and LAP header */ skb_reserve(skb, self->client.max_header_size); skb_put(skb, 2); frame = skb->data; frame[0] = CMD_GET_PROVIDER_INFO; frame[1] = 0x00; /* Zero parameters */ irlan_ctrl_data_request(self, skb); }

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samuel ortizsamuel ortiz66.19%228.57%
jean tourrilhesjean tourrilhes22.06%114.29%
Total97100.00%7100.00%

/* * Function irlan_open_data_channel (self) * * Send an Open Data Command to provider * */
void irlan_open_data_channel(struct irlan_cb *self) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER + IRLAN_STRING_PARAMETER_LEN("MEDIA", "802.3") + IRLAN_STRING_PARAMETER_LEN("ACCESS_TYPE", "DIRECT"), GFP_ATOMIC); if (!skb) return; skb_reserve(skb, self->client.max_header_size); skb_put(skb, 2); frame = skb->data; /* Build frame */ frame[0] = CMD_OPEN_DATA_CHANNEL; frame[1] = 0x02; /* Two parameters */ irlan_insert_string_param(skb, "MEDIA", "802.3"); irlan_insert_string_param(skb, "ACCESS_TYPE", "DIRECT"); /* irlan_insert_string_param(skb, "MODE", "UNRELIABLE"); */ /* self->use_udata = TRUE; */ irlan_ctrl_data_request(self, skb); }

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Total131100.00%7100.00%


void irlan_close_data_channel(struct irlan_cb *self) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); /* Check if the TSAP is still there */ if (self->client.tsap_ctrl == NULL) return; skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER + IRLAN_BYTE_PARAMETER_LEN("DATA_CHAN"), GFP_ATOMIC); if (!skb) return; skb_reserve(skb, self->client.max_header_size); skb_put(skb, 2); frame = skb->data; /* Build frame */ frame[0] = CMD_CLOSE_DATA_CHAN; frame[1] = 0x01; /* One parameter */ irlan_insert_byte_param(skb, "DATA_CHAN", self->dtsap_sel_data); irlan_ctrl_data_request(self, skb); }

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jean tourrilhesjean tourrilhes21.60%114.29%
Total125100.00%7100.00%

/* * Function irlan_open_unicast_addr (self) * * Make IrLAN provider accept ethernet frames addressed to the unicast * address. * */
static void irlan_open_unicast_addr(struct irlan_cb *self) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER + IRLAN_BYTE_PARAMETER_LEN("DATA_CHAN") + IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "DIRECTED") + IRLAN_STRING_PARAMETER_LEN("FILTER_MODE", "FILTER"), GFP_ATOMIC); if (!skb) return; /* Reserve space for TTP, LMP, and LAP header */ skb_reserve(skb, self->max_header_size); skb_put(skb, 2); frame = skb->data; frame[0] = CMD_FILTER_OPERATION; frame[1] = 0x03; /* Three parameters */ irlan_insert_byte_param(skb, "DATA_CHAN" , self->dtsap_sel_data); irlan_insert_string_param(skb, "FILTER_TYPE", "DIRECTED"); irlan_insert_string_param(skb, "FILTER_MODE", "FILTER"); irlan_ctrl_data_request(self, skb); }

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PersonTokensPropCommitsCommitProp
pre-gitpre-git11680.56%450.00%
samuel ortizsamuel ortiz2517.36%225.00%
jean tourrilhesjean tourrilhes21.39%112.50%
adrian bunkadrian bunk10.69%112.50%
Total144100.00%8100.00%

/* * Function irlan_set_broadcast_filter (self, status) * * Make IrLAN provider accept ethernet frames addressed to the broadcast * address. Be careful with the use of this one, since there may be a lot * of broadcast traffic out there. We can still function without this * one but then _we_ have to initiate all communication with other * hosts, since ARP request for this host will not be answered. */
void irlan_set_broadcast_filter(struct irlan_cb *self, int status) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER + IRLAN_BYTE_PARAMETER_LEN("DATA_CHAN") + IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "BROADCAST") + /* We may waste one byte here...*/ IRLAN_STRING_PARAMETER_LEN("FILTER_MODE", "FILTER"), GFP_ATOMIC); if (!skb) return; /* Reserve space for TTP, LMP, and LAP header */ skb_reserve(skb, self->client.max_header_size); skb_put(skb, 2); frame = skb->data; frame[0] = CMD_FILTER_OPERATION; frame[1] = 0x03; /* Three parameters */ irlan_insert_byte_param(skb, "DATA_CHAN", self->dtsap_sel_data); irlan_insert_string_param(skb, "FILTER_TYPE", "BROADCAST"); if (status) irlan_insert_string_param(skb, "FILTER_MODE", "FILTER"); else irlan_insert_string_param(skb, "FILTER_MODE", "NONE"); irlan_ctrl_data_request(self, skb); }

Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git13582.82%457.14%
samuel ortizsamuel ortiz2615.95%228.57%
jean tourrilhesjean tourrilhes21.23%114.29%
Total163100.00%7100.00%

/* * Function irlan_set_multicast_filter (self, status) * * Make IrLAN provider accept ethernet frames addressed to the multicast * address. * */
void irlan_set_multicast_filter(struct irlan_cb *self, int status) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER + IRLAN_BYTE_PARAMETER_LEN("DATA_CHAN") + IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "MULTICAST") + /* We may waste one byte here...*/ IRLAN_STRING_PARAMETER_LEN("FILTER_MODE", "NONE"), GFP_ATOMIC); if (!skb) return; /* Reserve space for TTP, LMP, and LAP header */ skb_reserve(skb, self->client.max_header_size); skb_put(skb, 2); frame = skb->data; frame[0] = CMD_FILTER_OPERATION; frame[1] = 0x03; /* Three parameters */ irlan_insert_byte_param(skb, "DATA_CHAN", self->dtsap_sel_data); irlan_insert_string_param(skb, "FILTER_TYPE", "MULTICAST"); if (status) irlan_insert_string_param(skb, "FILTER_MODE", "ALL"); else irlan_insert_string_param(skb, "FILTER_MODE", "NONE"); irlan_ctrl_data_request(self, skb); }

Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git13582.82%457.14%
samuel ortizsamuel ortiz2615.95%228.57%
jean tourrilhesjean tourrilhes21.23%114.29%
Total163100.00%7100.00%

/* * Function irlan_get_unicast_addr (self) * * Retrieves the unicast address from the IrLAN provider. This address * will be inserted into the devices structure, so the ethernet layer * can construct its packets. * */
static void irlan_get_unicast_addr(struct irlan_cb *self) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER + IRLAN_BYTE_PARAMETER_LEN("DATA_CHAN") + IRLAN_STRING_PARAMETER_LEN("FILTER_TYPE", "DIRECTED") + IRLAN_STRING_PARAMETER_LEN("FILTER_OPERATION", "DYNAMIC"), GFP_ATOMIC); if (!skb) return; /* Reserve space for TTP, LMP, and LAP header */ skb_reserve(skb, self->client.max_header_size); skb_put(skb, 2); frame = skb->data; frame[0] = CMD_FILTER_OPERATION; frame[1] = 0x03; /* Three parameters */ irlan_insert_byte_param(skb, "DATA_CHAN", self->dtsap_sel_data); irlan_insert_string_param(skb, "FILTER_TYPE", "DIRECTED"); irlan_insert_string_param(skb, "FILTER_OPERATION", "DYNAMIC"); irlan_ctrl_data_request(self, skb); }

Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git11880.82%450.00%
samuel ortizsamuel ortiz2517.12%225.00%
jean tourrilhesjean tourrilhes21.37%112.50%
adrian bunkadrian bunk10.68%112.50%
Total146100.00%8100.00%

/* * Function irlan_get_media_char (self) * * * */
void irlan_get_media_char(struct irlan_cb *self) { struct sk_buff *skb; __u8 *frame; IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); skb = alloc_skb(IRLAN_MAX_HEADER + IRLAN_CMD_HEADER + IRLAN_STRING_PARAMETER_LEN("MEDIA", "802.3"), GFP_ATOMIC); if (!skb) return; /* Reserve space for TTP, LMP, and LAP header */ skb_reserve(skb, self->client.max_header_size); skb_put(skb, 2); frame = skb->data; /* Build frame */ frame[0] = CMD_GET_MEDIA_CHAR; frame[1] = 0x01; /* One parameter */ irlan_insert_string_param(skb, "MEDIA", "802.3"); irlan_ctrl_data_request(self, skb); }

Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git9986.84%457.14%
samuel ortizsamuel ortiz1311.40%228.57%
jean tourrilhesjean tourrilhes21.75%114.29%
Total114100.00%7100.00%

/* * Function insert_byte_param (skb, param, value) * * Insert byte parameter into frame * */
int irlan_insert_byte_param(struct sk_buff *skb, char *param, __u8 value) { return __irlan_insert_param(skb, param, IRLAN_BYTE, value, 0, NULL, 0); }

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PersonTokensPropCommitsCommitProp
pre-gitpre-git35100.00%2100.00%
Total35100.00%2100.00%


int irlan_insert_short_param(struct sk_buff *skb, char *param, __u16 value) { return __irlan_insert_param(skb, param, IRLAN_SHORT, 0, value, NULL, 0); }

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PersonTokensPropCommitsCommitProp
pre-gitpre-git35100.00%2100.00%
Total35100.00%2100.00%

/* * Function insert_string (skb, param, value) * * Insert string parameter into frame * */
int irlan_insert_string_param(struct sk_buff *skb, char *param, char *string) { int string_len = strlen(string); return __irlan_insert_param(skb, param, IRLAN_ARRAY, 0, 0, string, string_len); }

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PersonTokensPropCommitsCommitProp
pre-gitpre-git44100.00%2100.00%
Total44100.00%2100.00%

/* * Function insert_array_param(skb, param, value, len_value) * * Insert array parameter into frame * */
int irlan_insert_array_param(struct sk_buff *skb, char *name, __u8 *array, __u16 array_len) { return __irlan_insert_param(skb, name, IRLAN_ARRAY, 0, 0, array, array_len); }

Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git39100.00%2100.00%
Total39100.00%2100.00%

/* * Function insert_param (skb, param, value, byte) * * Insert parameter at end of buffer, structure of a parameter is: * * ----------------------------------------------------------------------- * | Name Length[1] | Param Name[1..255] | Val Length[2] | Value[0..1016]| * ----------------------------------------------------------------------- */
static int __irlan_insert_param(struct sk_buff *skb, char *param, int type, __u8 value_byte, __u16 value_short, __u8 *value_array, __u16 value_len) { __u8 *frame; __u8 param_len; __le16 tmp_le; /* Temporary value in little endian format */ int n=0; if (skb == NULL) { pr_debug("%s(), Got NULL skb\n", __func__); return 0; } param_len = strlen(param); switch (type) { case IRLAN_BYTE: value_len = 1; break; case IRLAN_SHORT: value_len = 2; break; case IRLAN_ARRAY: IRDA_ASSERT(value_array != NULL, return 0;); IRDA_ASSERT(value_len > 0, return 0;); break; default: pr_debug("%s(), Unknown parameter type!\n", __func__); return 0; } /* Insert at end of sk-buffer */ frame = skb_tail_pointer(skb); /* Make space for data */ if (skb_tailroom(skb) < (param_len+value_len+3)) { pr_debug("%s(), No more space at end of skb\n", __func__); return 0; } skb_put(skb, param_len+value_len+3); /* Insert parameter length */ frame[n++] = param_len; /* Insert parameter */ memcpy(frame+n, param, param_len); n += param_len; /* Insert value length (2 byte little endian format, LSB first) */ tmp_le = cpu_to_le16(value_len); memcpy(frame+n, &tmp_le, 2); n += 2; /* To avoid alignment problems */ /* Insert value */ switch (type) { case IRLAN_BYTE: frame[n++] = value_byte; break; case IRLAN_SHORT: tmp_le = cpu_to_le16(value_short); memcpy(frame+n, &tmp_le, 2); n += 2; break; case IRLAN_ARRAY: memcpy(frame+n, value_array, value_len); n+=value_len; break; default: break; } IRDA_ASSERT(n == (param_len+value_len+3), return 0;); return param_len+value_len+3; }

Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git29193.87%333.33%
jean tourrilhesjean tourrilhes92.90%222.22%
joe perchesjoe perches30.97%111.11%
harvey harrisonharvey harrison30.97%111.11%
arnaldo carvalho de meloarnaldo carvalho de melo30.97%111.11%
al viroal viro10.32%111.11%
Total310100.00%9100.00%

/* * Function irlan_extract_param (buf, name, value, len) * * Extracts a single parameter name/value pair from buffer and updates * the buffer pointer to point to the next name/value pair. */
int irlan_extract_param(__u8 *buf, char *name, char *value, __u16 *len) { __u8 name_len; __u16 val_len; int n=0; /* get length of parameter name (1 byte) */ name_len = buf[n++]; if (name_len > 254) { pr_debug("%s(), name_len > 254\n", __func__); return -RSP_INVALID_COMMAND_FORMAT; } /* get parameter name */ memcpy(name, buf+n, name_len); name[name_len] = '\0'; n+=name_len; /* * Get length of parameter value (2 bytes in little endian * format) */ memcpy(&val_len, buf+n, 2); /* To avoid alignment problems */ le16_to_cpus(&val_len); n+=2; if (val_len >= 1016) { pr_debug("%s(), parameter length to long\n", __func__); return -RSP_INVALID_COMMAND_FORMAT; } *len = val_len; /* get parameter value */ memcpy(value, buf+n, val_len); value[val_len] = '\0'; n+=val_len; pr_debug("Parameter: %s ", name); pr_debug("Value: %s\n", value); return n; }

Contributors

PersonTokensPropCommitsCommitProp
pre-gitpre-git15992.98%444.44%
jean tourrilhesjean tourrilhes42.34%111.11%
joe perchesjoe perches42.34%111.11%
harvey harrisonharvey harrison21.17%111.11%
hideaki yoshifujihideaki yoshifuji10.58%111.11%
dan carpenterdan carpenter10.58%111.11%
Total171100.00%9100.00%

#ifdef CONFIG_PROC_FS /* * Start of reading /proc entries. * Return entry at pos, * or start_token to indicate print header line * or NULL if end of file */
static void *irlan_seq_start(struct seq_file *seq, loff_t *pos) { rcu_read_lock(); return seq_list_start_head(&irlans, *pos); }

Contributors

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stephen hemmingerstephen hemminger2068.97%133.33%
pre-gitpre-git517.24%133.33%
li zefanli zefan413.79%133.33%
Total29100.00%3100.00%

/* Return entry after v, and increment pos */
static void *irlan_seq_next(struct seq_file *seq, void *v, loff_t *pos) { return seq_list_next(v, &irlans, pos); }

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stephen hemmingerstephen hemminger2270.97%133.33%
li zefanli zefan516.13%133.33%
pre-gitpre-git412.90%133.33%
Total31100.00%3100.00%

/* End of reading /proc file */
static void irlan_seq_stop(struct seq_file *seq, void *v) { rcu_read_unlock(); }

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stephen hemmingerstephen hemminger1794.44%266.67%
jean tourrilhesjean tourrilhes15.56%133.33%
Total18100.00%3100.00%

/* * Show one entry in /proc file. */
static int irlan_seq_show(struct seq_file *seq, void *v) { if (v == &irlans) seq_puts(seq, "IrLAN instances:\n"); else { struct irlan_cb *self = list_entry(v, struct irlan_cb, dev_list); IRDA_ASSERT(self != NULL, return -1;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -1;); seq_printf(seq,"ifname: %s,\n", self->dev->name); seq_printf(seq,"client state: %s, ", irlan_state[ self->client.state]); seq_printf(seq,"provider state: %s,\n", irlan_state[ self->provider.state]); seq_printf(seq,"saddr: %#08x, ", self->saddr); seq_printf(seq,"daddr: %#08x\n", self->daddr); seq_printf(seq,"version: %d.%d,\n", self->version[1], self->version[0]); seq_printf(seq,"access type: %s\n", irlan_access[self->client.access_type]); seq_printf(seq,"media: %s\n", irlan_media[self->media]); seq_printf(seq,"local filter:\n"); seq_printf(seq,"remote filter: "); irlan_print_filter(seq, self->client.filter_type); seq_printf(seq,"tx busy: %s\n", netif_queue_stopped(self->dev) ? "TRUE" : "FALSE"); seq_putc(seq,'\n'); } return 0; }

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PersonTokensPropCommitsCommitProp
pre-gitpre-git15465.25%654.55%
stephen hemmingerstephen hemminger7029.66%327.27%
li zefanli zefan104.24%19.09%
jean tourrilhesjean tourrilhes20.85%19.09%
Total236100.00%11100.00%

static const struct seq_operations irlan_seq_ops = { .start = irlan_seq_start, .next = irlan_seq_next, .stop = irlan_seq_stop, .show = irlan_seq_show, };
static int irlan_seq_open(struct inode *inode, struct file *file) { return seq_open(file, &irlan_seq_ops); }

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stephen hemmingerstephen hemminger2392.00%150.00%
pre-gitpre-git28.00%150.00%
Total25100.00%2100.00%

#endif MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>"); MODULE_DESCRIPTION("The Linux IrDA LAN protocol"); MODULE_LICENSE("GPL"); module_param(eth, bool, 0); MODULE_PARM_DESC(eth, "Name devices ethX (0) or irlanX (1)"); module_param(access, int, 0); MODULE_PARM_DESC(access, "Access type DIRECT=1, PEER=2, HOSTED=3"); module_init(irlan_init); module_exit(irlan_cleanup);

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PersonTokensPropCommitsCommitProp
pre-gitpre-git326677.28%1628.57%
stephen hemmingerstephen hemminger3989.42%35.36%
jean tourrilhesjean tourrilhes1663.93%712.50%
samuel ortizsamuel ortiz1533.62%23.57%
akinobu mitaakinobu mita571.35%11.79%
adrian bunkadrian bunk410.97%23.57%
linus torvaldslinus torvalds270.64%23.57%
joe perchesjoe perches200.47%23.57%
li zefanli zefan190.45%11.79%
harvey harrisonharvey harrison170.40%11.79%
hideaki yoshifujihideaki yoshifuji130.31%11.79%
rusty russellrusty russell120.28%23.57%
wang chenwang chen70.17%23.57%
ben collinsben collins70.17%11.79%
alexey dobriyanalexey dobriyan30.07%11.79%
jan engelhardtjan engelhardt30.07%23.57%
tejun heotejun heo30.07%11.79%
arnaldo carvalho de meloarnaldo carvalho de melo30.07%11.79%
al viroal viro20.05%23.57%
fabian frederickfabian frederick20.05%11.79%
steven colesteven cole20.05%11.79%
jeff garzikjeff garzik20.05%11.79%
philippe de muyterphilippe de muyter10.02%11.79%
arjan van de venarjan van de ven10.02%11.79%
dan carpenterdan carpenter10.02%11.79%
Total4226100.00%56100.00%
Directory: net/irda/irlan
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