cregit-Linux how code gets into the kernel

Release 4.11 net/tipc/bearer.c

Directory: net/tipc
/*
 * net/tipc/bearer.c: TIPC bearer code
 *
 * Copyright (c) 1996-2006, 2013-2016, Ericsson AB
 * Copyright (c) 2004-2006, 2010-2013, Wind River Systems
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <net/sock.h>
#include "core.h"
#include "bearer.h"
#include "link.h"
#include "discover.h"
#include "monitor.h"
#include "bcast.h"
#include "netlink.h"
#include "udp_media.h"


#define MAX_ADDR_STR 60


static struct tipc_media * const media_info_array[] = {
	&eth_media_info,
#ifdef CONFIG_TIPC_MEDIA_IB
	&ib_media_info,
#endif
#ifdef CONFIG_TIPC_MEDIA_UDP
	&udp_media_info,
#endif
	NULL
};


static struct tipc_bearer *bearer_get(struct net *net, int bearer_id) { struct tipc_net *tn = tipc_net(net); return rcu_dereference_rtnl(tn->bearer_list[bearer_id]); }

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PersonTokensPropCommitsCommitProp
Jon Paul Maloy37100.00%1100.00%
Total37100.00%1100.00%

static void bearer_disable(struct net *net, struct tipc_bearer *b); /** * tipc_media_find - locates specified media object by name */
struct tipc_media *tipc_media_find(const char *name) { u32 i; for (i = 0; media_info_array[i] != NULL; i++) { if (!strcmp(media_info_array[i]->name, name)) break; } return media_info_array[i]; }

Contributors

PersonTokensPropCommitsCommitProp
Per Liden3869.09%116.67%
Jon Paul Maloy916.36%233.33%
Allan Stephens712.73%233.33%
Paul Gortmaker11.82%116.67%
Total55100.00%6100.00%

/** * media_find_id - locates specified media object by type identifier */
static struct tipc_media *media_find_id(u8 type) { u32 i; for (i = 0; media_info_array[i] != NULL; i++) { if (media_info_array[i]->type_id == type) break; } return media_info_array[i]; }

Contributors

PersonTokensPropCommitsCommitProp
Allan Stephens3672.00%233.33%
Jon Paul Maloy918.00%233.33%
Per Liden48.00%116.67%
Paul Gortmaker12.00%116.67%
Total50100.00%6100.00%

/** * tipc_media_addr_printf - record media address in print buffer */
void tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a) { char addr_str[MAX_ADDR_STR]; struct tipc_media *m; int ret; m = media_find_id(a->media_id); if (m && !m->addr2str(a, addr_str, sizeof(addr_str))) ret = scnprintf(buf, len, "%s(%s)", m->name, addr_str); else { u32 i; ret = scnprintf(buf, len, "UNKNOWN(%u)", a->media_id); for (i = 0; i < sizeof(a->value); i++) ret += scnprintf(buf - ret, len + ret, "-%02x", a->value[i]); } }

Contributors

PersonTokensPropCommitsCommitProp
Per Liden6446.72%220.00%
Allan Stephens3727.01%440.00%
Erik Hugne2719.71%110.00%
Jon Paul Maloy53.65%110.00%
Richard Alpe32.19%110.00%
Paul Gortmaker10.73%110.00%
Total137100.00%10100.00%

/** * bearer_name_validate - validate & (optionally) deconstruct bearer name * @name: ptr to bearer name string * @name_parts: ptr to area for bearer name components (or NULL if not needed) * * Returns 1 if bearer name is valid, otherwise 0. */
static int bearer_name_validate(const char *name, struct tipc_bearer_names *name_parts) { char name_copy[TIPC_MAX_BEARER_NAME]; char *media_name; char *if_name; u32 media_len; u32 if_len; /* copy bearer name & ensure length is OK */ name_copy[TIPC_MAX_BEARER_NAME - 1] = 0; /* need above in case non-Posix strncpy() doesn't pad with nulls */ strncpy(name_copy, name, TIPC_MAX_BEARER_NAME); if (name_copy[TIPC_MAX_BEARER_NAME - 1] != 0) return 0; /* ensure all component parts of bearer name are present */ media_name = name_copy; if_name = strchr(media_name, ':'); if (if_name == NULL) return 0; *(if_name++) = 0; media_len = if_name - media_name; if_len = strlen(if_name) + 1; /* validate component parts of bearer name */ if ((media_len <= 1) || (media_len > TIPC_MAX_MEDIA_NAME) || (if_len <= 1) || (if_len > TIPC_MAX_IF_NAME)) return 0; /* return bearer name components, if necessary */ if (name_parts) { strcpy(name_parts->media_name, media_name); strcpy(name_parts->if_name, if_name); } return 1; }

Contributors

PersonTokensPropCommitsCommitProp
Per Liden16997.13%133.33%
Allan Stephens42.30%133.33%
Paul Gortmaker10.57%133.33%
Total174100.00%3100.00%

/** * tipc_bearer_find - locates bearer object with matching bearer name */
struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name) { struct tipc_net *tn = net_generic(net, tipc_net_id); struct tipc_bearer *b; u32 i; for (i = 0; i < MAX_BEARERS; i++) { b = rtnl_dereference(tn->bearer_list[i]); if (b && (!strcmp(b->name, name))) return b; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Per Liden4855.81%112.50%
Ying Xue2933.72%337.50%
Jon Paul Maloy55.81%112.50%
Allan Stephens33.49%225.00%
Sam Ravnborg11.16%112.50%
Total86100.00%8100.00%

/* tipc_bearer_get_name - get the bearer name from its id. * @net: network namespace * @name: a pointer to the buffer where the name will be stored. * @bearer_id: the id to get the name from. */
int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id) { struct tipc_net *tn = tipc_net(net); struct tipc_bearer *b; if (bearer_id >= MAX_BEARERS) return -EINVAL; b = rtnl_dereference(tn->bearer_list[bearer_id]); if (!b) return -EINVAL; strcpy(name, b->name); return 0; }

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PersonTokensPropCommitsCommitProp
Parthasarathy Bhuvaragan75100.00%1100.00%
Total75100.00%1100.00%


void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest) { struct tipc_net *tn = net_generic(net, tipc_net_id); struct tipc_bearer *b; rcu_read_lock(); b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]); if (b) tipc_disc_add_dest(b->link_req); rcu_read_unlock(); }

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PersonTokensPropCommitsCommitProp
Ying Xue4470.97%233.33%
Per Liden1320.97%233.33%
Jon Paul Maloy46.45%116.67%
Allan Stephens11.61%116.67%
Total62100.00%6100.00%


void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest) { struct tipc_net *tn = net_generic(net, tipc_net_id); struct tipc_bearer *b; rcu_read_lock(); b = rcu_dereference_rtnl(tn->bearer_list[bearer_id]); if (b) tipc_disc_remove_dest(b->link_req); rcu_read_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Ying Xue4470.97%233.33%
Per Liden1320.97%233.33%
Jon Paul Maloy46.45%116.67%
Allan Stephens11.61%116.67%
Total62100.00%6100.00%

/** * tipc_enable_bearer - enable bearer with the given name */
static int tipc_enable_bearer(struct net *net, const char *name, u32 disc_domain, u32 priority, struct nlattr *attr[]) { struct tipc_net *tn = net_generic(net, tipc_net_id); struct tipc_bearer *b; struct tipc_media *m; struct tipc_bearer_names b_names; struct sk_buff *skb; char addr_string[16]; u32 bearer_id; u32 with_this_prio; u32 i; int res = -EINVAL; if (!tn->own_addr) { pr_warn("Bearer <%s> rejected, not supported in standalone mode\n", name); return -ENOPROTOOPT; } if (!bearer_name_validate(name, &b_names)) { pr_warn("Bearer <%s> rejected, illegal name\n", name); return -EINVAL; } if (tipc_addr_domain_valid(disc_domain) && (disc_domain != tn->own_addr)) { if (tipc_in_scope(disc_domain, tn->own_addr)) { disc_domain = tn->own_addr & TIPC_ZONE_CLUSTER_MASK; res = 0; /* accept any node in own cluster */ } else if (in_own_cluster_exact(net, disc_domain)) res = 0; /* accept specified node in own cluster */ } if (res) { pr_warn("Bearer <%s> rejected, illegal discovery domain\n", name); return -EINVAL; } if ((priority > TIPC_MAX_LINK_PRI) && (priority != TIPC_MEDIA_LINK_PRI)) { pr_warn("Bearer <%s> rejected, illegal priority\n", name); return -EINVAL; } m = tipc_media_find(b_names.media_name); if (!m) { pr_warn("Bearer <%s> rejected, media <%s> not registered\n", name, b_names.media_name); return -EINVAL; } if (priority == TIPC_MEDIA_LINK_PRI) priority = m->priority; restart: bearer_id = MAX_BEARERS; with_this_prio = 1; for (i = MAX_BEARERS; i-- != 0; ) { b = rtnl_dereference(tn->bearer_list[i]); if (!b) { bearer_id = i; continue; } if (!strcmp(name, b->name)) { pr_warn("Bearer <%s> rejected, already enabled\n", name); return -EINVAL; } if ((b->priority == priority) && (++with_this_prio > 2)) { if (priority-- == 0) { pr_warn("Bearer <%s> rejected, duplicate priority\n", name); return -EINVAL; } pr_warn("Bearer <%s> priority adjustment required %u->%u\n", name, priority + 1, priority); goto restart; } } if (bearer_id >= MAX_BEARERS) { pr_warn("Bearer <%s> rejected, bearer limit reached (%u)\n", name, MAX_BEARERS); return -EINVAL; } b = kzalloc(sizeof(*b), GFP_ATOMIC); if (!b) return -ENOMEM; strcpy(b->name, name); b->media = m; res = m->enable_media(net, b, attr); if (res) { pr_warn("Bearer <%s> rejected, enable failure (%d)\n", name, -res); return -EINVAL; } b->identity = bearer_id; b->tolerance = m->tolerance; b->window = m->window; b->domain = disc_domain; b->net_plane = bearer_id + 'A'; b->priority = priority; test_and_set_bit_lock(0, &b->up); res = tipc_disc_create(net, b, &b->bcast_addr, &skb); if (res) { bearer_disable(net, b); pr_warn("Bearer <%s> rejected, discovery object creation failed\n", name); return -EINVAL; } rcu_assign_pointer(tn->bearer_list[bearer_id], b); if (skb) tipc_bearer_xmit_skb(net, bearer_id, skb, &b->bcast_addr); if (tipc_mon_create(net, bearer_id)) return -ENOMEM; pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n", name, tipc_addr_string_fill(addr_string, disc_domain), priority); return res; }

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PersonTokensPropCommitsCommitProp
Per Liden30046.66%39.09%
Allan Stephens12319.13%927.27%
Ying Xue10716.64%927.27%
Jon Paul Maloy7812.13%412.12%
Erik Hugne253.89%39.09%
Paul Gortmaker60.93%26.06%
Ingo Molnar20.31%13.03%
Richard Alpe10.16%13.03%
Parthasarathy Bhuvaragan10.16%13.03%
Total643100.00%33100.00%

/** * tipc_reset_bearer - Reset all links established over this bearer */
static int tipc_reset_bearer(struct net *net, struct tipc_bearer *b) { pr_info("Resetting bearer <%s>\n", b->name); tipc_node_delete_links(net, b->identity); tipc_disc_reset(net, b); return 0; }

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PersonTokensPropCommitsCommitProp
Ying Xue1636.36%640.00%
Per Liden1022.73%16.67%
Allan Stephens715.91%320.00%
Erik Hugne613.64%320.00%
Jon Paul Maloy511.36%213.33%
Total44100.00%15100.00%

/* tipc_bearer_reset_all - reset all links on all bearers */
void tipc_bearer_reset_all(struct net *net) { struct tipc_bearer *b; int i; for (i = 0; i < MAX_BEARERS; i++) { b = bearer_get(net, i); if (b) clear_bit_unlock(0, &b->up); } for (i = 0; i < MAX_BEARERS; i++) { b = bearer_get(net, i); if (b) tipc_reset_bearer(net, b); } for (i = 0; i < MAX_BEARERS; i++) { b = bearer_get(net, i); if (b) test_and_set_bit_lock(0, &b->up); } }

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PersonTokensPropCommitsCommitProp
Jon Paul Maloy129100.00%2100.00%
Total129100.00%2100.00%

/** * bearer_disable * * Note: This routine assumes caller holds RTNL lock. */
static void bearer_disable(struct net *net, struct tipc_bearer *b) { struct tipc_net *tn = tipc_net(net); int bearer_id = b->identity; pr_info("Disabling bearer <%s>\n", b->name); clear_bit_unlock(0, &b->up); tipc_node_delete_links(net, bearer_id); b->media->disable_media(b); RCU_INIT_POINTER(b->media_ptr, NULL); if (b->link_req) tipc_disc_delete(b->link_req); RCU_INIT_POINTER(tn->bearer_list[bearer_id], NULL); kfree_rcu(b, rcu); tipc_mon_delete(net, bearer_id); }

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PersonTokensPropCommitsCommitProp
Jon Paul Maloy4740.52%631.58%
Ying Xue3530.17%526.32%
Per Liden1512.93%15.26%
Allan Stephens1311.21%526.32%
Ding Tianhong54.31%15.26%
Erik Hugne10.86%15.26%
Total116100.00%19100.00%


int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b, struct nlattr *attr[]) { struct net_device *dev; char *driver_name = strchr((const char *)b->name, ':') + 1; /* Find device with specified name */ dev = dev_get_by_name(net, driver_name); if (!dev) return -ENODEV; if (tipc_mtu_bad(dev, 0)) { dev_put(dev); return -EINVAL; } /* Associate TIPC bearer with L2 bearer */ rcu_assign_pointer(b->media_ptr, dev); memset(&b->bcast_addr, 0, sizeof(b->bcast_addr)); memcpy(b->bcast_addr.value, dev->broadcast, b->media->hwaddr_len); b->bcast_addr.media_id = b->media->type_id; b->bcast_addr.broadcast = TIPC_BROADCAST_SUPPORT; b->mtu = dev->mtu; b->media->raw2addr(b, &b->addr, (char *)dev->dev_addr); rcu_assign_pointer(dev->tipc_ptr, b); return 0; }

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PersonTokensPropCommitsCommitProp
Ying Xue15982.38%342.86%
Michal Kubeček2010.36%114.29%
Jon Paul Maloy84.15%228.57%
Erik Hugne63.11%114.29%
Total193100.00%7100.00%

/* tipc_disable_l2_media - detach TIPC bearer from an L2 interface * * Mark L2 bearer as inactive so that incoming buffers are thrown away */
void tipc_disable_l2_media(struct tipc_bearer *b) { struct net_device *dev; dev = (struct net_device *)rtnl_dereference(b->media_ptr); RCU_INIT_POINTER(dev->tipc_ptr, NULL); synchronize_net(); dev_put(dev); }

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Ying Xue46100.00%3100.00%
Total46100.00%3100.00%

/** * tipc_l2_send_msg - send a TIPC packet out over an L2 interface * @skb: the packet to be sent * @b: the bearer through which the packet is to be sent * @dest: peer destination address */
int tipc_l2_send_msg(struct net *net, struct sk_buff *skb, struct tipc_bearer *b, struct tipc_media_addr *dest) { struct net_device *dev; int delta; dev = (struct net_device *)rcu_dereference_rtnl(b->media_ptr); if (!dev) return 0; delta = SKB_DATA_ALIGN(dev->hard_header_len - skb_headroom(skb)); if ((delta > 0) && pskb_expand_head(skb, delta, 0, GFP_ATOMIC)) { kfree_skb(skb); return 0; } skb_reset_network_header(skb); skb->dev = dev; skb->protocol = htons(ETH_P_TIPC); dev_hard_header(skb, dev, ETH_P_TIPC, dest->value, dev->dev_addr, skb->len); dev_queue_xmit(skb); return 0; }

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PersonTokensPropCommitsCommitProp
Ying Xue12585.03%360.00%
Jon Paul Maloy2214.97%240.00%
Total147100.00%5100.00%


bool tipc_bearer_bcast_support(struct net *net, u32 bearer_id) { bool supp = false; struct tipc_bearer *b; rcu_read_lock(); b = bearer_get(net, bearer_id); if (b) supp = (b->bcast_addr.broadcast == TIPC_BROADCAST_SUPPORT); rcu_read_unlock(); return supp; }

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PersonTokensPropCommitsCommitProp
Jon Paul Maloy57100.00%1100.00%
Total57100.00%1100.00%


int tipc_bearer_mtu(struct net *net, u32 bearer_id) { int mtu = 0; struct tipc_bearer *b; rcu_read_lock(); b = rcu_dereference_rtnl(tipc_net(net)->bearer_list[bearer_id]); if (b) mtu = b->mtu; rcu_read_unlock(); return mtu; }

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Jon Paul Maloy57100.00%1100.00%
Total57100.00%1100.00%

/* tipc_bearer_xmit_skb - sends buffer to destination over bearer */
void tipc_bearer_xmit_skb(struct net *net, u32 bearer_id, struct sk_buff *skb, struct tipc_media_addr *dest) { struct tipc_msg *hdr = buf_msg(skb); struct tipc_bearer *b; rcu_read_lock(); b = bearer_get(net, bearer_id); if (likely(b && (test_bit(0, &b->up) || msg_is_reset(hdr)))) b->media->send_msg(net, skb, b, dest); else kfree_skb(skb); rcu_read_unlock(); }

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Jon Paul Maloy98100.00%3100.00%
Total98100.00%3100.00%

/* tipc_bearer_xmit() -send buffer to destination over bearer */
void tipc_bearer_xmit(struct net *net, u32 bearer_id, struct sk_buff_head *xmitq, struct tipc_media_addr *dst) { struct tipc_bearer *b; struct sk_buff *skb, *tmp; if (skb_queue_empty(xmitq)) return; rcu_read_lock(); b = bearer_get(net, bearer_id); if (unlikely(!b)) __skb_queue_purge(xmitq); skb_queue_walk_safe(xmitq, skb, tmp) { __skb_dequeue(xmitq); if (likely(test_bit(0, &b->up) || msg_is_reset(buf_msg(skb)))) b->media->send_msg(net, skb, b, dst); else kfree_skb(skb); } rcu_read_unlock(); }

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Jon Paul Maloy13099.24%375.00%
Wei Yongjun10.76%125.00%
Total131100.00%4100.00%

/* tipc_bearer_bc_xmit() - broadcast buffers to all destinations */
void tipc_bearer_bc_xmit(struct net *net, u32 bearer_id, struct sk_buff_head *xmitq) { struct tipc_net *tn = tipc_net(net); int net_id = tn->net_id; struct tipc_bearer *b; struct sk_buff *skb, *tmp; struct tipc_msg *hdr; rcu_read_lock(); b = bearer_get(net, bearer_id); if (unlikely(!b || !test_bit(0, &b->up))) __skb_queue_purge(xmitq); skb_queue_walk_safe(xmitq, skb, tmp) { hdr = buf_msg(skb); msg_set_non_seq(hdr, 1); msg_set_mc_netid(hdr, net_id); __skb_dequeue(xmitq); b->media->send_msg(net, skb, b, &b->bcast_addr); } rcu_read_unlock(); }

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PersonTokensPropCommitsCommitProp
Jon Paul Maloy146100.00%3100.00%
Total146100.00%3100.00%

/** * tipc_l2_rcv_msg - handle incoming TIPC message from an interface * @buf: the received packet * @dev: the net device that the packet was received on * @pt: the packet_type structure which was used to register this handler * @orig_dev: the original receive net device in case the device is a bond * * Accept only packets explicitly sent to this node, or broadcast packets; * ignores packets sent using interface multicast, and traffic sent to other * nodes (which can happen if interface is running in promiscuous mode). */
static int tipc_l2_rcv_msg(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) { struct tipc_bearer *b; rcu_read_lock(); b = rcu_dereference_rtnl(dev->tipc_ptr); if (likely(b && test_bit(0, &b->up) && (skb->pkt_type <= PACKET_BROADCAST))) { skb->next = NULL; tipc_rcv(dev_net(dev), skb, b); rcu_read_unlock(); return NET_RX_SUCCESS; } rcu_read_unlock(); kfree_skb(skb); return NET_RX_DROP; }

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Ying Xue8278.10%342.86%
Jon Paul Maloy2321.90%457.14%
Total105100.00%7100.00%

/** * tipc_l2_device_event - handle device events from network device * @nb: the context of the notification * @evt: the type of event * @ptr: the net device that the event was on * * This function is called by the Ethernet driver in case of link * change event. */
static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); struct net *net = dev_net(dev); struct tipc_bearer *b; b = rtnl_dereference(dev->tipc_ptr); if (!b) return NOTIFY_DONE; switch (evt) { case NETDEV_CHANGE: if (netif_carrier_ok(dev)) break; case NETDEV_UP: test_and_set_bit_lock(0, &b->up); break; case NETDEV_GOING_DOWN: clear_bit_unlock(0, &b->up); tipc_reset_bearer(net, b); break; case NETDEV_CHANGEMTU: if (tipc_mtu_bad(dev, 0)) { bearer_disable(net, b); break; } b->mtu = dev->mtu; tipc_reset_bearer(net, b); break; case NETDEV_CHANGEADDR: b->media->raw2addr(b, &b->addr, (char *)dev->dev_addr); tipc_reset_bearer(net, b); break; case NETDEV_UNREGISTER: case NETDEV_CHANGENAME: bearer_disable(dev_net(dev), b); break; } return NOTIFY_OK; }

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Ying Xue11154.41%541.67%
Jon Paul Maloy4622.55%541.67%
Michal Kubeček2713.24%18.33%
Erik Hugne209.80%18.33%
Total204100.00%12100.00%

static struct packet_type tipc_packet_type __read_mostly = { .type = htons(ETH_P_TIPC), .func = tipc_l2_rcv_msg, }; static struct notifier_block notifier = { .notifier_call = tipc_l2_device_event, .priority = 0, };
int tipc_bearer_setup(void) { int err; err = register_netdevice_notifier(&notifier); if (err) return err; dev_add_pack(&tipc_packet_type); return 0; }

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Ying Xue34100.00%2100.00%
Total34100.00%2100.00%


void tipc_bearer_cleanup(void) { unregister_netdevice_notifier(&notifier); dev_remove_pack(&tipc_packet_type); }

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Ying Xue19100.00%1100.00%
Total19100.00%1100.00%


void tipc_bearer_stop(struct net *net) { struct tipc_net *tn = net_generic(net, tipc_net_id); struct tipc_bearer *b; u32 i; for (i = 0; i < MAX_BEARERS; i++) { b = rtnl_dereference(tn->bearer_list[i]); if (b) { bearer_disable(net, b); tn->bearer_list[i] = NULL; } } }

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Ying Xue4354.43%457.14%
Per Liden3240.51%228.57%
Jon Paul Maloy45.06%114.29%
Total79100.00%7100.00%

/* Caller should hold rtnl_lock to protect the bearer */
static int __tipc_nl_add_bearer(struct tipc_nl_msg *msg, struct tipc_bearer *bearer, int nlflags) { void *hdr; struct nlattr *attrs; struct nlattr *prop; hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family, nlflags, TIPC_NL_BEARER_GET); if (!hdr) return -EMSGSIZE; attrs = nla_nest_start(msg->skb, TIPC_NLA_BEARER); if (!attrs) goto msg_full; if (nla_put_string(msg->skb, TIPC_NLA_BEARER_NAME, bearer->name)) goto attr_msg_full; prop = nla_nest_start(msg->skb, TIPC_NLA_BEARER_PROP); if (!prop) goto prop_msg_full; if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, bearer->priority)) goto prop_msg_full; if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, bearer->tolerance)) goto prop_msg_full; if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, bearer->window)) goto prop_msg_full; nla_nest_end(msg->skb, prop); #ifdef CONFIG_TIPC_MEDIA_UDP if (bearer->media->type_id == TIPC_MEDIA_TYPE_UDP) { if (tipc_udp_nl_add_bearer_data(msg, bearer)) goto attr_msg_full; } #endif nla_nest_end(msg->skb, attrs); genlmsg_end(msg->skb, hdr); return 0; prop_msg_full: nla_nest_cancel(msg->skb, prop); attr_msg_full: nla_nest_cancel(msg->skb, attrs); msg_full: genlmsg_cancel(msg->skb, hdr); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe26898.53%480.00%
Nicolas Dichtel41.47%120.00%
Total272100.00%5100.00%


int tipc_nl_bearer_dump(struct sk_buff *skb, struct netlink_callback *cb) { int err; int i = cb->args[0]; struct tipc_bearer *bearer; struct tipc_nl_msg msg; struct net *net = sock_net(skb->sk); struct tipc_net *tn = net_generic(net, tipc_net_id); if (i == MAX_BEARERS) return 0; msg.skb = skb; msg.portid = NETLINK_CB(cb->skb).portid; msg.seq = cb->nlh->nlmsg_seq; rtnl_lock(); for (i = 0; i < MAX_BEARERS; i++) { bearer = rtnl_dereference(tn->bearer_list[i]); if (!bearer) continue; err = __tipc_nl_add_bearer(&msg, bearer, NLM_F_MULTI); if (err) break; } rtnl_unlock(); cb->args[0] = i; return skb->len; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe14183.43%133.33%
Ying Xue2615.38%133.33%
Nicolas Dichtel21.18%133.33%
Total169100.00%3100.00%


int tipc_nl_bearer_get(struct sk_buff *skb, struct genl_info *info) { int err; char *name; struct sk_buff *rep; struct tipc_bearer *bearer; struct tipc_nl_msg msg; struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; struct net *net = genl_info_net(info); if (!info->attrs[TIPC_NLA_BEARER]) return -EINVAL; err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, info->attrs[TIPC_NLA_BEARER], tipc_nl_bearer_policy); if (err) return err; if (!attrs[TIPC_NLA_BEARER_NAME]) return -EINVAL; name = nla_data(attrs[TIPC_NLA_BEARER_NAME]); rep = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); if (!rep) return -ENOMEM; msg.skb = rep; msg.portid = info->snd_portid; msg.seq = info->snd_seq; rtnl_lock(); bearer = tipc_bearer_find(net, name); if (!bearer) { err = -EINVAL; goto err_out; } err = __tipc_nl_add_bearer(&msg, bearer, 0); if (err) goto err_out; rtnl_unlock(); return genlmsg_reply(rep, info); err_out: rtnl_unlock(); nlmsg_free(rep); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe21393.83%133.33%
Ying Xue125.29%133.33%
Nicolas Dichtel20.88%133.33%
Total227100.00%3100.00%


int tipc_nl_bearer_disable(struct sk_buff *skb, struct genl_info *info) { int err; char *name; struct tipc_bearer *bearer; struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; struct net *net = sock_net(skb->sk); if (!info->attrs[TIPC_NLA_BEARER]) return -EINVAL; err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, info->attrs[TIPC_NLA_BEARER], tipc_nl_bearer_policy); if (err) return err; if (!attrs[TIPC_NLA_BEARER_NAME]) return -EINVAL; name = nla_data(attrs[TIPC_NLA_BEARER_NAME]); rtnl_lock(); bearer = tipc_bearer_find(net, name); if (!bearer) { rtnl_unlock(); return -EINVAL; } bearer_disable(net, bearer); rtnl_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe13791.95%250.00%
Ying Xue128.05%250.00%
Total149100.00%4100.00%


int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info) { int err; char *bearer; struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; struct net *net = sock_net(skb->sk); struct tipc_net *tn = net_generic(net, tipc_net_id); u32 domain; u32 prio; prio = TIPC_MEDIA_LINK_PRI; domain = tn->own_addr & TIPC_ZONE_CLUSTER_MASK; if (!info->attrs[TIPC_NLA_BEARER]) return -EINVAL; err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, info->attrs[TIPC_NLA_BEARER], tipc_nl_bearer_policy); if (err) return err; if (!attrs[TIPC_NLA_BEARER_NAME]) return -EINVAL; bearer = nla_data(attrs[TIPC_NLA_BEARER_NAME]); if (attrs[TIPC_NLA_BEARER_DOMAIN]) domain = nla_get_u32(attrs[TIPC_NLA_BEARER_DOMAIN]); if (attrs[TIPC_NLA_BEARER_PROP]) { struct nlattr *props[TIPC_NLA_PROP_MAX + 1]; err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_BEARER_PROP], props); if (err) return err; if (props[TIPC_NLA_PROP_PRIO]) prio = nla_get_u32(props[TIPC_NLA_PROP_PRIO]); } rtnl_lock(); err = tipc_enable_bearer(net, bearer, domain, prio, attrs); if (err) { rtnl_unlock(); return err; } rtnl_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe21588.48%233.33%
Ying Xue2510.29%233.33%
Erik Hugne20.82%116.67%
Parthasarathy Bhuvaragan10.41%116.67%
Total243100.00%6100.00%


int tipc_nl_bearer_add(struct sk_buff *skb, struct genl_info *info) { int err; char *name; struct tipc_bearer *b; struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; struct net *net = sock_net(skb->sk); if (!info->attrs[TIPC_NLA_BEARER]) return -EINVAL; err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, info->attrs[TIPC_NLA_BEARER], tipc_nl_bearer_policy); if (err) return err; if (!attrs[TIPC_NLA_BEARER_NAME]) return -EINVAL; name = nla_data(attrs[TIPC_NLA_BEARER_NAME]); rtnl_lock(); b = tipc_bearer_find(net, name); if (!b) { rtnl_unlock(); return -EINVAL; } #ifdef CONFIG_TIPC_MEDIA_UDP if (attrs[TIPC_NLA_BEARER_UDP_OPTS]) { err = tipc_udp_nl_bearer_add(b, attrs[TIPC_NLA_BEARER_UDP_OPTS]); if (err) { rtnl_unlock(); return err; } } #endif rtnl_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe180100.00%1100.00%
Total180100.00%1100.00%


int tipc_nl_bearer_set(struct sk_buff *skb, struct genl_info *info) { int err; char *name; struct tipc_bearer *b; struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; struct net *net = sock_net(skb->sk); if (!info->attrs[TIPC_NLA_BEARER]) return -EINVAL; err = nla_parse_nested(attrs, TIPC_NLA_BEARER_MAX, info->attrs[TIPC_NLA_BEARER], tipc_nl_bearer_policy); if (err) return err; if (!attrs[TIPC_NLA_BEARER_NAME]) return -EINVAL; name = nla_data(attrs[TIPC_NLA_BEARER_NAME]); rtnl_lock(); b = tipc_bearer_find(net, name); if (!b) { rtnl_unlock(); return -EINVAL; } if (attrs[TIPC_NLA_BEARER_PROP]) { struct nlattr *props[TIPC_NLA_PROP_MAX + 1]; err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_BEARER_PROP], props); if (err) { rtnl_unlock(); return err; } if (props[TIPC_NLA_PROP_TOL]) b->tolerance = nla_get_u32(props[TIPC_NLA_PROP_TOL]); if (props[TIPC_NLA_PROP_PRIO]) b->priority = nla_get_u32(props[TIPC_NLA_PROP_PRIO]); if (props[TIPC_NLA_PROP_WIN]) b->window = nla_get_u32(props[TIPC_NLA_PROP_WIN]); } rtnl_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe23295.87%266.67%
Ying Xue104.13%133.33%
Total242100.00%3100.00%


static int __tipc_nl_add_media(struct tipc_nl_msg *msg, struct tipc_media *media, int nlflags) { void *hdr; struct nlattr *attrs; struct nlattr *prop; hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family, nlflags, TIPC_NL_MEDIA_GET); if (!hdr) return -EMSGSIZE; attrs = nla_nest_start(msg->skb, TIPC_NLA_MEDIA); if (!attrs) goto msg_full; if (nla_put_string(msg->skb, TIPC_NLA_MEDIA_NAME, media->name)) goto attr_msg_full; prop = nla_nest_start(msg->skb, TIPC_NLA_MEDIA_PROP); if (!prop) goto prop_msg_full; if (nla_put_u32(msg->skb, TIPC_NLA_PROP_PRIO, media->priority)) goto prop_msg_full; if (nla_put_u32(msg->skb, TIPC_NLA_PROP_TOL, media->tolerance)) goto prop_msg_full; if (nla_put_u32(msg->skb, TIPC_NLA_PROP_WIN, media->window)) goto prop_msg_full; nla_nest_end(msg->skb, prop); nla_nest_end(msg->skb, attrs); genlmsg_end(msg->skb, hdr); return 0; prop_msg_full: nla_nest_cancel(msg->skb, prop); attr_msg_full: nla_nest_cancel(msg->skb, attrs); msg_full: genlmsg_cancel(msg->skb, hdr); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe23998.35%375.00%
Nicolas Dichtel41.65%125.00%
Total243100.00%4100.00%


int tipc_nl_media_dump(struct sk_buff *skb, struct netlink_callback *cb) { int err; int i = cb->args[0]; struct tipc_nl_msg msg; if (i == MAX_MEDIA) return 0; msg.skb = skb; msg.portid = NETLINK_CB(cb->skb).portid; msg.seq = cb->nlh->nlmsg_seq; rtnl_lock(); for (; media_info_array[i] != NULL; i++) { err = __tipc_nl_add_media(&msg, media_info_array[i], NLM_F_MULTI); if (err) break; } rtnl_unlock(); cb->args[0] = i; return skb->len; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe12398.40%150.00%
Nicolas Dichtel21.60%150.00%
Total125100.00%2100.00%


int tipc_nl_media_get(struct sk_buff *skb, struct genl_info *info) { int err; char *name; struct tipc_nl_msg msg; struct tipc_media *media; struct sk_buff *rep; struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; if (!info->attrs[TIPC_NLA_MEDIA]) return -EINVAL; err = nla_parse_nested(attrs, TIPC_NLA_MEDIA_MAX, info->attrs[TIPC_NLA_MEDIA], tipc_nl_media_policy); if (err) return err; if (!attrs[TIPC_NLA_MEDIA_NAME]) return -EINVAL; name = nla_data(attrs[TIPC_NLA_MEDIA_NAME]); rep = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); if (!rep) return -ENOMEM; msg.skb = rep; msg.portid = info->snd_portid; msg.seq = info->snd_seq; rtnl_lock(); media = tipc_media_find(name); if (!media) { err = -EINVAL; goto err_out; } err = __tipc_nl_add_media(&msg, media, 0); if (err) goto err_out; rtnl_unlock(); return genlmsg_reply(rep, info); err_out: rtnl_unlock(); nlmsg_free(rep); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe21399.07%150.00%
Nicolas Dichtel20.93%150.00%
Total215100.00%2100.00%


int tipc_nl_media_set(struct sk_buff *skb, struct genl_info *info) { int err; char *name; struct tipc_media *m; struct nlattr *attrs[TIPC_NLA_BEARER_MAX + 1]; if (!info->attrs[TIPC_NLA_MEDIA]) return -EINVAL; err = nla_parse_nested(attrs, TIPC_NLA_MEDIA_MAX, info->attrs[TIPC_NLA_MEDIA], tipc_nl_media_policy); if (!attrs[TIPC_NLA_MEDIA_NAME]) return -EINVAL; name = nla_data(attrs[TIPC_NLA_MEDIA_NAME]); rtnl_lock(); m = tipc_media_find(name); if (!m) { rtnl_unlock(); return -EINVAL; } if (attrs[TIPC_NLA_MEDIA_PROP]) { struct nlattr *props[TIPC_NLA_PROP_MAX + 1]; err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_MEDIA_PROP], props); if (err) { rtnl_unlock(); return err; } if (props[TIPC_NLA_PROP_TOL]) m->tolerance = nla_get_u32(props[TIPC_NLA_PROP_TOL]); if (props[TIPC_NLA_PROP_PRIO]) m->priority = nla_get_u32(props[TIPC_NLA_PROP_PRIO]); if (props[TIPC_NLA_PROP_WIN]) m->window = nla_get_u32(props[TIPC_NLA_PROP_WIN]); } rtnl_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe221100.00%1100.00%
Total221100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Richard Alpe219640.62%1314.13%
Ying Xue103019.05%2122.83%
Jon Paul Maloy95217.61%1819.57%
Per Liden72313.37%33.26%
Allan Stephens2454.53%1920.65%
Erik Hugne961.78%55.43%
Parthasarathy Bhuvaragan781.44%22.17%
Michal Kubeček470.87%11.09%
Nicolas Dichtel160.30%11.09%
Paul Gortmaker110.20%22.17%
Ding Tianhong50.09%11.09%
Ingo Molnar20.04%11.09%
Patrick McHardy10.02%11.09%
Ben Hutchings10.02%11.09%
Joe Perches10.02%11.09%
Wei Yongjun10.02%11.09%
Sam Ravnborg10.02%11.09%
Total5406100.00%92100.00%
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