cregit-Linux how code gets into the kernel

Release 4.11 net/irda/irnetlink.c

Directory: net/irda
/*
 * IrDA netlink layer, for stack configuration.
 *
 * Copyright (c) 2007 Samuel Ortiz <samuel@sortiz.org>
 *
 * Partly based on the 802.11 nelink implementation
 * (see net/wireless/nl80211.c) which is:
 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/socket.h>
#include <linux/irda.h>
#include <linux/gfp.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/irda/irda.h>
#include <net/irda/irlap.h>
#include <net/genetlink.h>




static struct genl_family irda_nl_family;


static struct net_device * ifname_to_netdev(struct net *net, struct genl_info *info) { char * ifname; if (!info->attrs[IRDA_NL_ATTR_IFNAME]) return NULL; ifname = nla_data(info->attrs[IRDA_NL_ATTR_IFNAME]); pr_debug("%s(): Looking for %s\n", __func__, ifname); return dev_get_by_name(net, ifname); }

Contributors

PersonTokensPropCommitsCommitProp
Samuel Ortiz5585.94%125.00%
Eric W. Biedermann710.94%125.00%
Joe Perches11.56%125.00%
Harvey Harrison11.56%125.00%
Total64100.00%4100.00%


static int irda_nl_set_mode(struct sk_buff *skb, struct genl_info *info) { struct net_device * dev; struct irlap_cb * irlap; u32 mode; if (!info->attrs[IRDA_NL_ATTR_MODE]) return -EINVAL; mode = nla_get_u32(info->attrs[IRDA_NL_ATTR_MODE]); pr_debug("%s(): Switching to mode: %d\n", __func__, mode); dev = ifname_to_netdev(&init_net, info); if (!dev) return -ENODEV; irlap = (struct irlap_cb *)dev->atalk_ptr; if (!irlap) { dev_put(dev); return -ENODEV; } irlap->mode = mode; dev_put(dev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Samuel Ortiz11995.97%125.00%
Eric W. Biedermann32.42%125.00%
Harvey Harrison10.81%125.00%
Joe Perches10.81%125.00%
Total124100.00%4100.00%


static int irda_nl_get_mode(struct sk_buff *skb, struct genl_info *info) { struct net_device * dev; struct irlap_cb * irlap; struct sk_buff *msg; void *hdr; int ret = -ENOBUFS; dev = ifname_to_netdev(&init_net, info); if (!dev) return -ENODEV; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) { dev_put(dev); return -ENOMEM; } irlap = (struct irlap_cb *)dev->atalk_ptr; if (!irlap) { ret = -ENODEV; goto err_out; } hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &irda_nl_family, 0, IRDA_NL_CMD_GET_MODE); if (hdr == NULL) { ret = -EMSGSIZE; goto err_out; } if(nla_put_string(msg, IRDA_NL_ATTR_IFNAME, dev->name)) goto err_out; if(nla_put_u32(msg, IRDA_NL_ATTR_MODE, irlap->mode)) goto err_out; genlmsg_end(msg, hdr); return genlmsg_reply(msg, info); err_out: nlmsg_free(msg); dev_put(dev); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Samuel Ortiz20195.26%116.67%
Julius Volz41.90%116.67%
Eric W. Biedermann41.90%233.33%
Johannes Berg10.47%116.67%
Pablo Neira Ayuso10.47%116.67%
Total211100.00%6100.00%

static const struct nla_policy irda_nl_policy[IRDA_NL_ATTR_MAX + 1] = { [IRDA_NL_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, [IRDA_NL_ATTR_MODE] = { .type = NLA_U32 }, }; static const struct genl_ops irda_nl_ops[] = { { .cmd = IRDA_NL_CMD_SET_MODE, .doit = irda_nl_set_mode, .policy = irda_nl_policy, .flags = GENL_ADMIN_PERM, }, { .cmd = IRDA_NL_CMD_GET_MODE, .doit = irda_nl_get_mode, .policy = irda_nl_policy, /* can be retrieved by unprivileged users */ }, }; static struct genl_family irda_nl_family __ro_after_init = { .name = IRDA_NL_NAME, .hdrsize = 0, .version = IRDA_NL_VERSION, .maxattr = IRDA_NL_CMD_MAX, .module = THIS_MODULE, .ops = irda_nl_ops, .n_ops = ARRAY_SIZE(irda_nl_ops), };
int __init irda_nl_register(void) { return genl_register_family(&irda_nl_family); }

Contributors

PersonTokensPropCommitsCommitProp
Samuel Ortiz1386.67%133.33%
Johannes Berg213.33%266.67%
Total15100.00%3100.00%


void irda_nl_unregister(void) { genl_unregister_family(&irda_nl_family); }

Contributors

PersonTokensPropCommitsCommitProp
Samuel Ortiz13100.00%1100.00%
Total13100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Samuel Ortiz51586.55%214.29%
Johannes Berg508.40%428.57%
Eric W. Biedermann172.86%214.29%
Julius Volz40.67%17.14%
Tejun Heo30.50%17.14%
Joe Perches20.34%17.14%
Harvey Harrison20.34%17.14%
Pablo Neira Ayuso10.17%17.14%
Alexey Dobriyan10.17%17.14%
Total595100.00%14100.00%
Directory: net/irda
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