cregit-Linux how code gets into the kernel

Release 4.11 net/xfrm/xfrm_state.c

Directory: net/xfrm
/*
 * xfrm_state.c
 *
 * Changes:
 *      Mitsuru KANDA @USAGI
 *      Kazunori MIYAZAWA @USAGI
 *      Kunihiro Ishiguro <kunihiro@ipinfusion.com>
 *              IPv6 support
 *      YOSHIFUJI Hideaki @USAGI
 *              Split up af-specific functions
 *      Derek Atkins <derek@ihtfp.com>
 *              Add UDP Encapsulation
 *
 */

#include <linux/workqueue.h>
#include <net/xfrm.h>
#include <linux/pfkeyv2.h>
#include <linux/ipsec.h>
#include <linux/module.h>
#include <linux/cache.h>
#include <linux/audit.h>
#include <linux/uaccess.h>
#include <linux/ktime.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>

#include "xfrm_hash.h"


#define xfrm_state_deref_prot(table, net) \
	rcu_dereference_protected((table), lockdep_is_held(&(net)->xfrm.xfrm_state_lock))

static void xfrm_state_gc_task(struct work_struct *work);

/* Each xfrm_state may be linked to two tables:

   1. Hash table by (spi,daddr,ah/esp) to find SA by SPI. (input,ctl)
   2. Hash table by (daddr,family,reqid) to find what SAs exist for given
      destination/tunnel endpoint. (output)
 */


static unsigned int xfrm_state_hashmax __read_mostly = 1 * 1024 * 1024;

static __read_mostly seqcount_t xfrm_state_hash_generation = SEQCNT_ZERO(xfrm_state_hash_generation);

static DECLARE_WORK(xfrm_state_gc_work, xfrm_state_gc_task);
static HLIST_HEAD(xfrm_state_gc_list);


static inline bool xfrm_state_hold_rcu(struct xfrm_state __rcu *x) { return atomic_inc_not_zero(&x->refcnt); }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal22100.00%1100.00%
Total22100.00%1100.00%


static inline unsigned int xfrm_dst_hash(struct net *net, const xfrm_address_t *daddr, const xfrm_address_t *saddr, u32 reqid, unsigned short family) { return __xfrm_dst_hash(daddr, saddr, reqid, family, net->xfrm.state_hmask); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller3879.17%571.43%
Alexey Dobriyan1020.83%228.57%
Total48100.00%7100.00%


static inline unsigned int xfrm_src_hash(struct net *net, const xfrm_address_t *daddr, const xfrm_address_t *saddr, unsigned short family) { return __xfrm_src_hash(daddr, saddr, family, net->xfrm.state_hmask); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller2455.81%450.00%
Alexey Dobriyan1023.26%225.00%
Masahide Nakamura818.60%112.50%
Hideaki Yoshifuji / 吉藤英明12.33%112.50%
Total43100.00%8100.00%


static inline unsigned int xfrm_spi_hash(struct net *net, const xfrm_address_t *daddr, __be32 spi, u8 proto, unsigned short family) { return __xfrm_spi_hash(daddr, spi, proto, family, net->xfrm.state_hmask); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller3576.09%457.14%
Alexey Dobriyan1021.74%228.57%
Al Viro12.17%114.29%
Total46100.00%7100.00%


static void xfrm_hash_transfer(struct hlist_head *list, struct hlist_head *ndsttable, struct hlist_head *nsrctable, struct hlist_head *nspitable, unsigned int nhashmask) { struct hlist_node *tmp; struct xfrm_state *x; hlist_for_each_entry_safe(x, tmp, list, bydst) { unsigned int h; h = __xfrm_dst_hash(&x->id.daddr, &x->props.saddr, x->props.reqid, x->props.family, nhashmask); hlist_add_head_rcu(&x->bydst, ndsttable + h); h = __xfrm_src_hash(&x->id.daddr, &x->props.saddr, x->props.family, nhashmask); hlist_add_head_rcu(&x->bysrc, nsrctable + h); if (x->id.spi) { h = __xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto, x->props.family, nhashmask); hlist_add_head_rcu(&x->byspi, nspitable + h); } } }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller17489.69%350.00%
Masahide Nakamura178.76%233.33%
Florian Westphal31.55%116.67%
Total194100.00%6100.00%


static unsigned long xfrm_hash_new_size(unsigned int state_hmask) { return ((state_hmask + 1) << 1) * sizeof(struct hlist_head); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller2485.71%133.33%
Alexey Dobriyan414.29%266.67%
Total28100.00%3100.00%


static void xfrm_hash_resize(struct work_struct *work) { struct net *net = container_of(work, struct net, xfrm.state_hash_work); struct hlist_head *ndst, *nsrc, *nspi, *odst, *osrc, *ospi; unsigned long nsize, osize; unsigned int nhashmask, ohashmask; int i; nsize = xfrm_hash_new_size(net->xfrm.state_hmask); ndst = xfrm_hash_alloc(nsize); if (!ndst) return; nsrc = xfrm_hash_alloc(nsize); if (!nsrc) { xfrm_hash_free(ndst, nsize); return; } nspi = xfrm_hash_alloc(nsize); if (!nspi) { xfrm_hash_free(ndst, nsize); xfrm_hash_free(nsrc, nsize); return; } spin_lock_bh(&net->xfrm.xfrm_state_lock); write_seqcount_begin(&xfrm_state_hash_generation); nhashmask = (nsize / sizeof(struct hlist_head)) - 1U; odst = xfrm_state_deref_prot(net->xfrm.state_bydst, net); for (i = net->xfrm.state_hmask; i >= 0; i--) xfrm_hash_transfer(odst + i, ndst, nsrc, nspi, nhashmask); osrc = xfrm_state_deref_prot(net->xfrm.state_bysrc, net); ospi = xfrm_state_deref_prot(net->xfrm.state_byspi, net); ohashmask = net->xfrm.state_hmask; rcu_assign_pointer(net->xfrm.state_bydst, ndst); rcu_assign_pointer(net->xfrm.state_bysrc, nsrc); rcu_assign_pointer(net->xfrm.state_byspi, nspi); net->xfrm.state_hmask = nhashmask; write_seqcount_end(&xfrm_state_hash_generation); spin_unlock_bh(&net->xfrm.xfrm_state_lock); osize = (ohashmask + 1) * sizeof(struct hlist_head); synchronize_rcu(); xfrm_hash_free(odst, osize); xfrm_hash_free(osrc, osize); xfrm_hash_free(ospi, osize); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller21362.28%321.43%
Alexey Dobriyan6519.01%535.71%
Florian Westphal5114.91%321.43%
Fan Du82.34%17.14%
Ying Xue30.88%17.14%
David Howells20.58%17.14%
Total342100.00%14100.00%

static DEFINE_SPINLOCK(xfrm_state_afinfo_lock); static struct xfrm_state_afinfo __rcu *xfrm_state_afinfo[NPROTO]; static DEFINE_SPINLOCK(xfrm_state_gc_lock); int __xfrm_state_delete(struct xfrm_state *x); int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol); bool km_is_alive(const struct km_event *c); void km_state_expired(struct xfrm_state *x, int hard, u32 portid); static DEFINE_SPINLOCK(xfrm_type_lock);
int xfrm_register_type(const struct xfrm_type *type, unsigned short family) { struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family); const struct xfrm_type **typemap; int err = 0; if (unlikely(afinfo == NULL)) return -EAFNOSUPPORT; typemap = afinfo->type_map; spin_lock_bh(&xfrm_type_lock); if (likely(typemap[type->proto] == NULL)) typemap[type->proto] = type; else err = -EEXIST; spin_unlock_bh(&xfrm_type_lock); rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu8683.50%125.00%
Américo Wang1312.62%125.00%
Florian Westphal21.94%125.00%
Eric Dumazet21.94%125.00%
Total103100.00%4100.00%

EXPORT_SYMBOL(xfrm_register_type);
int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family) { struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family); const struct xfrm_type **typemap; int err = 0; if (unlikely(afinfo == NULL)) return -EAFNOSUPPORT; typemap = afinfo->type_map; spin_lock_bh(&xfrm_type_lock); if (unlikely(typemap[type->proto] != type)) err = -ENOENT; else typemap[type->proto] = NULL; spin_unlock_bh(&xfrm_type_lock); rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu8683.50%125.00%
Américo Wang1312.62%125.00%
Florian Westphal21.94%125.00%
Eric Dumazet21.94%125.00%
Total103100.00%4100.00%

EXPORT_SYMBOL(xfrm_unregister_type);
static const struct xfrm_type *xfrm_get_type(u8 proto, unsigned short family) { struct xfrm_state_afinfo *afinfo; const struct xfrm_type **typemap; const struct xfrm_type *type; int modload_attempted = 0; retry: afinfo = xfrm_state_get_afinfo(family); if (unlikely(afinfo == NULL)) return NULL; typemap = afinfo->type_map; type = READ_ONCE(typemap[proto]); if (unlikely(type && !try_module_get(type->owner))) type = NULL; rcu_read_unlock(); if (!type && !modload_attempted) { request_module("xfrm-type-%d-%d", family, proto); modload_attempted = 1; goto retry; } return type; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu11892.91%133.33%
Florian Westphal64.72%133.33%
Eric Dumazet32.36%133.33%
Total127100.00%3100.00%


static void xfrm_put_type(const struct xfrm_type *type) { module_put(type->owner); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu1894.74%150.00%
Eric Dumazet15.26%150.00%
Total19100.00%2100.00%

static DEFINE_SPINLOCK(xfrm_mode_lock);
int xfrm_register_mode(struct xfrm_mode *mode, int family) { struct xfrm_state_afinfo *afinfo; struct xfrm_mode **modemap; int err; if (unlikely(mode->encap >= XFRM_MODE_MAX)) return -EINVAL; afinfo = xfrm_state_get_afinfo(family); if (unlikely(afinfo == NULL)) return -EAFNOSUPPORT; err = -EEXIST; modemap = afinfo->mode_map; spin_lock_bh(&xfrm_mode_lock); if (modemap[mode->encap]) goto out; err = -ENOENT; if (!try_module_get(afinfo->owner)) goto out; mode->afinfo = afinfo; modemap[mode->encap] = mode; err = 0; out: spin_unlock_bh(&xfrm_mode_lock); rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu12789.44%250.00%
Américo Wang139.15%125.00%
Florian Westphal21.41%125.00%
Total142100.00%4100.00%

EXPORT_SYMBOL(xfrm_register_mode);
int xfrm_unregister_mode(struct xfrm_mode *mode, int family) { struct xfrm_state_afinfo *afinfo; struct xfrm_mode **modemap; int err; if (unlikely(mode->encap >= XFRM_MODE_MAX)) return -EINVAL; afinfo = xfrm_state_get_afinfo(family); if (unlikely(afinfo == NULL)) return -EAFNOSUPPORT; err = -ENOENT; modemap = afinfo->mode_map; spin_lock_bh(&xfrm_mode_lock); if (likely(modemap[mode->encap] == mode)) { modemap[mode->encap] = NULL; module_put(mode->afinfo->owner); err = 0; } spin_unlock_bh(&xfrm_mode_lock); rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu11488.37%250.00%
Américo Wang1310.08%125.00%
Florian Westphal21.55%125.00%
Total129100.00%4100.00%

EXPORT_SYMBOL(xfrm_unregister_mode);
static struct xfrm_mode *xfrm_get_mode(unsigned int encap, int family) { struct xfrm_state_afinfo *afinfo; struct xfrm_mode *mode; int modload_attempted = 0; if (unlikely(encap >= XFRM_MODE_MAX)) return NULL; retry: afinfo = xfrm_state_get_afinfo(family); if (unlikely(afinfo == NULL)) return NULL; mode = READ_ONCE(afinfo->mode_map[encap]); if (unlikely(mode && !try_module_get(mode->owner))) mode = NULL; rcu_read_unlock(); if (!mode && !modload_attempted) { request_module("xfrm-mode-%d-%d", family, encap); modload_attempted = 1; goto retry; } return mode; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu12095.24%150.00%
Florian Westphal64.76%150.00%
Total126100.00%2100.00%


static void xfrm_put_mode(struct xfrm_mode *mode) { module_put(mode->owner); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu18100.00%1100.00%
Total18100.00%1100.00%


static void xfrm_state_gc_destroy(struct xfrm_state *x) { tasklet_hrtimer_cancel(&x->mtimer); del_timer_sync(&x->rtimer); kfree(x->aead); kfree(x->aalg); kfree(x->ealg); kfree(x->calg); kfree(x->encap); kfree(x->coaddr); kfree(x->replay_esn); kfree(x->preplay_esn); if (x->inner_mode) xfrm_put_mode(x->inner_mode); if (x->inner_mode_iaf) xfrm_put_mode(x->inner_mode_iaf); if (x->outer_mode) xfrm_put_mode(x->outer_mode); if (x->type) { x->type->destructor(x); xfrm_put_type(x->type); } security_xfrm_state_free(x); kfree(x); }

Contributors

PersonTokensPropCommitsCommitProp
James Morris7447.44%216.67%
Herbert Xu2616.67%216.67%
Steffen Klassert148.97%18.33%
Kazunori Miyazawa138.33%18.33%
Ilan Tayari74.49%18.33%
Noriaki Takamiya74.49%18.33%
Jamal Hadi Salim74.49%18.33%
Trent Jaeger53.21%18.33%
Yury Polyanskiy21.28%18.33%
David S. Miller10.64%18.33%
Total156100.00%12100.00%


static void xfrm_state_gc_task(struct work_struct *work) { struct xfrm_state *x; struct hlist_node *tmp; struct hlist_head gc_list; spin_lock_bh(&xfrm_state_gc_lock); hlist_move_list(&xfrm_state_gc_list, &gc_list); spin_unlock_bh(&xfrm_state_gc_lock); synchronize_rcu(); hlist_for_each_entry_safe(x, tmp, &gc_list, gclist) xfrm_state_gc_destroy(x); }

Contributors

PersonTokensPropCommitsCommitProp
James Morris4164.06%112.50%
Herbert Xu1421.88%225.00%
Florian Westphal46.25%225.00%
David S. Miller23.12%112.50%
David Howells23.12%112.50%
Alexey Dobriyan11.56%112.50%
Total64100.00%8100.00%


static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me) { struct tasklet_hrtimer *thr = container_of(me, struct tasklet_hrtimer, timer); struct xfrm_state *x = container_of(thr, struct xfrm_state, mtimer); unsigned long now = get_seconds(); long next = LONG_MAX; int warn = 0; int err = 0; spin_lock(&x->lock); if (x->km.state == XFRM_STATE_DEAD) goto out; if (x->km.state == XFRM_STATE_EXPIRED) goto expired; if (x->lft.hard_add_expires_seconds) { long tmo = x->lft.hard_add_expires_seconds + x->curlft.add_time - now; if (tmo <= 0) { if (x->xflags & XFRM_SOFT_EXPIRE) { /* enter hard expire without soft expire first?! * setting a new date could trigger this. * workaround: fix x->curflt.add_time by below: */ x->curlft.add_time = now - x->saved_tmo - 1; tmo = x->lft.hard_add_expires_seconds - x->saved_tmo; } else goto expired; } if (tmo < next) next = tmo; } if (x->lft.hard_use_expires_seconds) { long tmo = x->lft.hard_use_expires_seconds + (x->curlft.use_time ? : now) - now; if (tmo <= 0) goto expired; if (tmo < next) next = tmo; } if (x->km.dying) goto resched; if (x->lft.soft_add_expires_seconds) { long tmo = x->lft.soft_add_expires_seconds + x->curlft.add_time - now; if (tmo <= 0) { warn = 1; x->xflags &= ~XFRM_SOFT_EXPIRE; } else if (tmo < next) { next = tmo; x->xflags |= XFRM_SOFT_EXPIRE; x->saved_tmo = tmo; } } if (x->lft.soft_use_expires_seconds) { long tmo = x->lft.soft_use_expires_seconds + (x->curlft.use_time ? : now) - now; if (tmo <= 0) warn = 1; else if (tmo < next) next = tmo; } x->km.dying = warn; if (warn) km_state_expired(x, 0, 0); resched: if (next != LONG_MAX) { tasklet_hrtimer_start(&x->mtimer, ktime_set(next, 0), HRTIMER_MODE_REL); } goto out; expired: if (x->km.state == XFRM_STATE_ACQ && x->id.spi == 0) x->km.state = XFRM_STATE_EXPIRED; err = __xfrm_state_delete(x); if (!err) km_state_expired(x, 1, 0); xfrm_audit_state_delete(x, err ? 0 : 1, true); out: spin_unlock(&x->lock); return HRTIMER_NORESTART; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Kuznetsov33266.94%213.33%
Fan Du6212.50%16.67%
Yury Polyanskiy408.06%16.67%
Joy Latten244.84%213.33%
Herbert Xu183.63%213.33%
David S. Miller122.42%320.00%
Jamal Hadi Salim40.81%16.67%
James Morris20.40%16.67%
Alexander Alemayhu10.20%16.67%
Tetsuo Handa10.20%16.67%
Total496100.00%15100.00%

static void xfrm_replay_timer_handler(unsigned long data);
struct xfrm_state *xfrm_state_alloc(struct net *net) { struct xfrm_state *x; x = kzalloc(sizeof(struct xfrm_state), GFP_ATOMIC); if (x) { write_pnet(&x->xs_net, net); atomic_set(&x->refcnt, 1); atomic_set(&x->tunnel_users, 0); INIT_LIST_HEAD(&x->km.all); INIT_HLIST_NODE(&x->bydst); INIT_HLIST_NODE(&x->bysrc); INIT_HLIST_NODE(&x->byspi); tasklet_hrtimer_init(&x->mtimer, xfrm_timer_handler, CLOCK_BOOTTIME, HRTIMER_MODE_ABS); setup_timer(&x->rtimer, xfrm_replay_timer_handler, (unsigned long)x); x->curlft.add_time = get_seconds(); x->lft.soft_byte_limit = XFRM_INF; x->lft.soft_packet_limit = XFRM_INF; x->lft.hard_byte_limit = XFRM_INF; x->lft.hard_packet_limit = XFRM_INF; x->replay_maxage = 0; x->replay_maxdiff = 0; x->inner_mode = NULL; x->inner_mode_iaf = NULL; spin_lock_init(&x->lock); } return x; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Kuznetsov10751.94%212.50%
Jamal Hadi Salim2411.65%16.25%
Alexey Dobriyan146.80%16.25%
Kazunori Miyazawa125.83%16.25%
James Morris125.83%212.50%
Timo Teräs83.88%16.25%
Pavel Emelyanov73.40%16.25%
Masahide Nakamura73.40%16.25%
Yury Polyanskiy41.94%16.25%
Andrew Morton41.94%16.25%
David S. Miller31.46%16.25%
Herbert Xu20.97%16.25%
Panagiotis Issaris10.49%16.25%
Fan Du10.49%16.25%
Total206100.00%16100.00%

EXPORT_SYMBOL(xfrm_state_alloc);
void __xfrm_state_destroy(struct xfrm_state *x) { WARN_ON(x->km.state != XFRM_STATE_DEAD); spin_lock_bh(&xfrm_state_gc_lock); hlist_add_head(&x->gclist, &xfrm_state_gc_list); spin_unlock_bh(&xfrm_state_gc_lock); schedule_work(&xfrm_state_gc_work); }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Kuznetsov2958.00%333.33%
James Morris1020.00%111.11%
Derek Atkins510.00%111.11%
Florian Westphal24.00%111.11%
Ilpo Järvinen24.00%111.11%
Herbert Xu24.00%222.22%
Total50100.00%9100.00%

EXPORT_SYMBOL(__xfrm_state_destroy);
int __xfrm_state_delete(struct xfrm_state *x) { struct net *net = xs_net(x); int err = -ESRCH; if (x->km.state != XFRM_STATE_DEAD) { x->km.state = XFRM_STATE_DEAD; spin_lock(&net->xfrm.xfrm_state_lock); list_del(&x->km.all); hlist_del_rcu(&x->bydst); hlist_del_rcu(&x->bysrc); if (x->id.spi) hlist_del_rcu(&x->byspi); net->xfrm.state_num--; spin_unlock(&net->xfrm.xfrm_state_lock); /* All xfrm_state objects are created by xfrm_state_alloc. * The xfrm_state_alloc call gives a reference, and that * is what we are dropping here. */ xfrm_state_put(x); err = 0; } return err; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Kuznetsov6248.44%318.75%
Alexey Dobriyan1511.72%212.50%
Jamal Hadi Salim1410.94%16.25%
Herbert Xu118.59%318.75%
Fan Du86.25%16.25%
Masahide Nakamura75.47%16.25%
James Morris53.91%212.50%
Florian Westphal32.34%16.25%
David S. Miller21.56%16.25%
Patrick McHardy10.78%16.25%
Total128100.00%16100.00%

EXPORT_SYMBOL(__xfrm_state_delete);
int xfrm_state_delete(struct xfrm_state *x) { int err; spin_lock_bh(&x->lock); err = __xfrm_state_delete(x); spin_unlock_bh(&x->lock); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Kuznetsov3076.92%150.00%
Jamal Hadi Salim923.08%150.00%
Total39100.00%2100.00%

EXPORT_SYMBOL(xfrm_state_delete); #ifdef CONFIG_SECURITY_NETWORK_XFRM
static inline int xfrm_state_flush_secctx_check(struct net *net, u8 proto, bool task_valid) { int i, err = 0; for (i = 0; i <= net->xfrm.state_hmask; i++) { struct xfrm_state *x; hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) { if (xfrm_id_proto_match(x->id.proto, proto) && (err = security_xfrm_state_delete(x)) != 0) { xfrm_audit_state_delete(x, 0, task_valid); return err; } } } return err; }

Contributors

PersonTokensPropCommitsCommitProp
Joy Latten7878.00%342.86%
Alexey Dobriyan1111.00%228.57%
Alexey Kuznetsov88.00%114.29%
Tetsuo Handa33.00%114.29%
Total100100.00%7100.00%

#else
static inline int xfrm_state_flush_secctx_check(struct net *net, u8 proto, bool task_valid) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Joy Latten1466.67%250.00%
Alexey Dobriyan523.81%125.00%
Tetsuo Handa29.52%125.00%
Total21100.00%4100.00%

#endif
int xfrm_state_flush(struct net *net, u8 proto, bool task_valid) { int i, err = 0, cnt = 0; spin_lock_bh(&net->xfrm.xfrm_state_lock); err = xfrm_state_flush_secctx_check(net, proto, task_valid); if (err) goto out; err = -ESRCH; for (i = 0; i <= net->xfrm.state_hmask; i++) { struct xfrm_state *x; restart: hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) { if (!xfrm_state_kern(x) && xfrm_id_proto_match(x->id.proto, proto)) { xfrm_state_hold(x); spin_unlock_bh(&net->xfrm.xfrm_state_lock); err = xfrm_state_delete(x); xfrm_audit_state_delete(x, err ? 0 : 1, task_valid); xfrm_state_put(x); if (!err) cnt++; spin_lock_bh(&net->xfrm.xfrm_state_lock); goto restart; } } } if (cnt) err = 0; out: spin_unlock_bh(&net->xfrm.xfrm_state_lock); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Joy Latten5828.86%320.00%
David S. Miller5828.86%213.33%
Alexey Kuznetsov2914.43%213.33%
Jamal Hadi Salim2110.45%16.67%
Alexey Dobriyan178.46%320.00%
Fan Du125.97%16.67%
Tetsuo Handa41.99%16.67%
Masahide Nakamura10.50%16.67%
James Morris10.50%16.67%
Total201100.00%15100.00%

EXPORT_SYMBOL(xfrm_state_flush);
void xfrm_sad_getinfo(struct net *net, struct xfrmk_sadinfo *si) { spin_lock_bh(&net->xfrm.xfrm_state_lock); si->sadcnt = net->xfrm.state_num; si->sadhcnt = net->xfrm.state_hmask; si->sadhmcnt = xfrm_state_hashmax; spin_unlock_bh(&net->xfrm.xfrm_state_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim3862.30%233.33%
Alexey Dobriyan1524.59%350.00%
Fan Du813.11%116.67%
Total61100.00%6100.00%

EXPORT_SYMBOL(xfrm_sad_getinfo);
static void xfrm_init_tempstate(struct xfrm_state *x, const struct flowi *fl, const struct xfrm_tmpl *tmpl, const xfrm_address_t *daddr, const xfrm_address_t *saddr, unsigned short family) { struct xfrm_state_afinfo *afinfo = xfrm_state_afinfo_get_rcu(family); if (!afinfo) return; afinfo->init_tempsel(&x->sel, fl); if (family != tmpl->encap_family) { afinfo = xfrm_state_afinfo_get_rcu(tmpl->encap_family); if (!afinfo) return; } afinfo->init_temprop(x, tmpl, daddr, saddr); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller6361.17%457.14%
Thomas Egerer3433.01%114.29%
Florian Westphal65.83%228.57%
Total103100.00%7100.00%


static struct xfrm_state *__xfrm_state_lookup(struct net *net, u32 mark, const xfrm_address_t *daddr, __be32 spi, u8 proto, unsigned short family) { unsigned int h = xfrm_spi_hash(net, daddr, spi, proto, family); struct xfrm_state *x; hlist_for_each_entry_rcu(x, net->xfrm.state_byspi + h, byspi) { if (x->props.family != family || x->id.spi != spi || x->id.proto != proto || !xfrm_addr_equal(&x->id.daddr, daddr, family)) continue; if ((mark & x->mark.m) != x->mark.v) continue; if (!xfrm_state_hold_rcu(x)) continue; return x; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller9467.63%218.18%
Jamal Hadi Salim2215.83%218.18%
Florian Westphal85.76%218.18%
Alexey Dobriyan75.04%218.18%
Wei Yongjun53.60%19.09%
Hideaki Yoshifuji / 吉藤英明21.44%19.09%
Al Viro10.72%19.09%
Total139100.00%11100.00%


static struct xfrm_state *__xfrm_state_lookup_byaddr(struct net *net, u32 mark, const xfrm_address_t *daddr, const xfrm_address_t *saddr, u8 proto, unsigned short family) { unsigned int h = xfrm_src_hash(net, daddr, saddr, family); struct xfrm_state *x; hlist_for_each_entry_rcu(x, net->xfrm.state_bysrc + h, bysrc) { if (x->props.family != family || x->id.proto != proto || !xfrm_addr_equal(&x->id.daddr, daddr, family) || !xfrm_addr_equal(&x->props.saddr, saddr, family)) continue; if ((mark & x->mark.m) != x->mark.v) continue; if (!xfrm_state_hold_rcu(x)) continue; return x; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller7954.11%318.75%
Jamal Hadi Salim2215.07%212.50%
Wei Yongjun106.85%16.25%
Alexey Kuznetsov96.16%212.50%
Florian Westphal85.48%212.50%
Alexey Dobriyan74.79%212.50%
Masahide Nakamura42.74%212.50%
Hideaki Yoshifuji / 吉藤英明42.74%16.25%
James Morris32.05%16.25%
Total146100.00%16100.00%


static inline struct xfrm_state * __xfrm_state_locate(struct xfrm_state *x, int use_spi, int family) { struct net *net = xs_net(x); u32 mark = x->mark.v & x->mark.m; if (use_spi) return __xfrm_state_lookup(net, mark, &x->id.daddr, x->id.spi, x->id.proto, family); else return __xfrm_state_lookup_byaddr(net, mark, &x->id.daddr, &x->props.saddr, x->id.proto, family); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller5045.87%125.00%
Hideaki Yoshifuji / 吉藤英明2623.85%125.00%
Jamal Hadi Salim1917.43%125.00%
Alexey Dobriyan1412.84%125.00%
Total109100.00%4100.00%


static void xfrm_hash_grow_check(struct net *net, int have_hash_collision) { if (have_hash_collision && (net->xfrm.state_hmask + 1) < xfrm_state_hashmax && net->xfrm.state_num > net->xfrm.state_hmask) schedule_work(&net->xfrm.state_hash_work); }

Contributors

PersonTokensPropCommitsCommitProp
Patrick McHardy2751.92%120.00%
Alexey Dobriyan2548.08%480.00%
Total52100.00%5100.00%


static void xfrm_state_look_at(struct xfrm_policy *pol, struct xfrm_state *x, const struct flowi *fl, unsigned short family, struct xfrm_state **best, int *acq_in_progress, int *error) { /* Resolution logic: * 1. There is a valid state with matching selector. Done. * 2. Valid state with inappropriate selector. Skip. * * Entering area of "sysdeps". * * 3. If state is not valid, selector is temporary, it selects * only session which triggered previous resolution. Key * manager will do something to install a state with proper * selector. */ if (x->km.state == XFRM_STATE_VALID) { if ((x->sel.family && !xfrm_selector_match(&x->sel, fl, x->sel.family)) || !security_xfrm_state_pol_flow_match(x, pol, fl)) return; if (!*best || (*best)->km.dying > x->km.dying || ((*best)->km.dying == x->km.dying && (*best)->curlft.add_time < x->curlft.add_time)) *best = x; } else if (x->km.state == XFRM_STATE_ACQ) { *acq_in_progress = 1; } else if (x->km.state == XFRM_STATE_ERROR || x->km.state == XFRM_STATE_EXPIRED) { if (xfrm_selector_match(&x->sel, fl, x->sel.family) && security_xfrm_state_pol_flow_match(x, pol, fl)) *error = -ESRCH; } }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller221100.00%2100.00%
Total221100.00%2100.00%


struct xfrm_state * xfrm_state_find(const xfrm_address_t *daddr, const xfrm_address_t *saddr, const struct flowi *fl, struct xfrm_tmpl *tmpl, struct xfrm_policy *pol, int *err, unsigned short family) { static xfrm_address_t saddr_wildcard = { }; struct net *net = xp_net(pol); unsigned int h, h_wildcard; struct xfrm_state *x, *x0, *to_put; int acquire_in_progress = 0; int error = 0; struct xfrm_state *best = NULL; u32 mark = pol->mark.v & pol->mark.m; unsigned short encap_family = tmpl->encap_family; unsigned int sequence; struct km_event c; to_put = NULL; sequence = read_seqcount_begin(&xfrm_state_hash_generation); rcu_read_lock(); h = xfrm_dst_hash(net, daddr, saddr, tmpl->reqid, encap_family); hlist_for_each_entry_rcu(x, net->xfrm.state_bydst + h, bydst) { if (x->props.family == encap_family && x->props.reqid == tmpl->reqid && (mark & x->mark.m) == x->mark.v && !(x->props.flags & XFRM_STATE_WILDRECV) && xfrm_state_addr_check(x, daddr, saddr, encap_family) && tmpl->mode == x->props.mode && tmpl->id.proto == x->id.proto && (tmpl->id.spi == x->id.spi || !tmpl->id.spi)) xfrm_state_look_at(pol, x, fl, encap_family, &best, &acquire_in_progress, &error); } if (best || acquire_in_progress) goto found; h_wildcard = xfrm_dst_hash(net, daddr, &saddr_wildcard, tmpl->reqid, encap_family); hlist_for_each_entry_rcu(x, net->xfrm.state_bydst + h_wildcard, bydst) { if (x->props.family == encap_family && x->props.reqid == tmpl->reqid && (mark & x->mark.m) == x->mark.v && !(x->props.flags & XFRM_STATE_WILDRECV) && xfrm_addr_equal(&x->id.daddr, daddr, encap_family) && tmpl->mode == x->props.mode && tmpl->id.proto == x->id.proto && (tmpl->id.spi == x->id.spi || !tmpl->id.spi)) xfrm_state_look_at(pol, x, fl, encap_family, &best, &acquire_in_progress, &error); } found: x = best; if (!x && !error && !acquire_in_progress) { if (tmpl->id.spi && (x0 = __xfrm_state_lookup(net, mark, daddr, tmpl->id.spi, tmpl->id.proto, encap_family)) != NULL) { to_put = x0; error = -EEXIST; goto out; } c.net = net; /* If the KMs have no listeners (yet...), avoid allocating an SA * for each and every packet - garbage collection might not * handle the flood. */ if (!km_is_alive(&c)) { error = -ESRCH; goto out; } x = xfrm_state_alloc(net); if (x == NULL) { error = -ENOMEM; goto out; } /* Initialize temporary state matching only * to current session. */ xfrm_init_tempstate(x, fl, tmpl, daddr, saddr, family); memcpy(&x->mark, &pol->mark, sizeof(x->mark)); error = security_xfrm_state_alloc_acquire(x, pol->security, fl->flowi_secid); if (error) { x->km.state = XFRM_STATE_DEAD; to_put = x; x = NULL; goto out; } if (km_query(x, tmpl, pol) == 0) { spin_lock_bh(&net->xfrm.xfrm_state_lock); x->km.state = XFRM_STATE_ACQ; list_add(&x->km.all, &net->xfrm.state_all); hlist_add_head_rcu(&x->bydst, net->xfrm.state_bydst + h); h = xfrm_src_hash(net, daddr, saddr, encap_family); hlist_add_head_rcu(&x->bysrc, net->xfrm.state_bysrc + h); if (x->id.spi) { h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto, encap_family); hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h); } x->lft.hard_add_expires_seconds = net->xfrm.sysctl_acq_expires; tasklet_hrtimer_start(&x->mtimer, ktime_set(net->xfrm.sysctl_acq_expires, 0), HRTIMER_MODE_REL); net->xfrm.state_num++; xfrm_hash_grow_check(net, x->bydst.next != NULL); spin_unlock_bh(&net->xfrm.xfrm_state_lock); } else { x->km.state = XFRM_STATE_DEAD; to_put = x; x = NULL; error = -ESRCH; } } out: if (x) { if (!xfrm_state_hold_rcu(x)) { *err = -EAGAIN; x = NULL; } } else { *err = acquire_in_progress ? -EAGAIN : error; } rcu_read_unlock(); if (to_put) xfrm_state_put(to_put); if (read_seqcount_retry(&xfrm_state_hash_generation, sequence)) { *err = -EAGAIN; if (x) { xfrm_state_put(x); x = NULL; } } return x; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Kuznetsov24225.05%59.80%
David S. Miller15716.25%713.73%
Patrick McHardy10010.35%47.84%
Florian Westphal969.94%47.84%
Jamal Hadi Salim697.14%23.92%
Hideaki Yoshifuji / 吉藤英明626.42%11.96%
Alexey Dobriyan596.11%1121.57%
Venkat Yekkirala394.04%11.96%
Horia Geantă303.11%11.96%
Masahide Nakamura232.38%35.88%
Herbert Xu222.28%35.88%
Thomas Egerer212.17%11.96%
Pavel Emelyanov141.45%11.96%
Yury Polyanskiy121.24%11.96%
Fan Du80.83%23.92%
Kunihiro Ishiguro60.62%11.96%
Nicolas Dichtel30.31%11.96%
Trent Jaeger20.21%11.96%
Joakim Koskela10.10%11.96%
Total966100.00%51100.00%


struct xfrm_state * xfrm_stateonly_find(struct net *net, u32 mark, xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, u8 mode, u8 proto, u32 reqid) { unsigned int h; struct xfrm_state *rx = NULL, *x = NULL; spin_lock_bh(&net->xfrm.xfrm_state_lock); h = xfrm_dst_hash(net, daddr, saddr, reqid, family); hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) { if (x->props.family == family && x->props.reqid == reqid && (mark & x->mark.m) == x->mark.v && !(x->props.flags & XFRM_STATE_WILDRECV) && xfrm_state_addr_check(x, daddr, saddr, family) && mode == x->props.mode && proto == x->id.proto && x->km.state == XFRM_STATE_VALID) { rx = x; break; } } if (rx) xfrm_state_hold(rx); spin_unlock_bh(&net->xfrm.xfrm_state_lock); return rx; }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim16584.18%337.50%
Pavel Emelyanov136.63%112.50%
Fan Du105.10%225.00%
Alexey Dobriyan84.08%225.00%
Total196100.00%8100.00%

EXPORT_SYMBOL(xfrm_stateonly_find);
struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, unsigned short family) { struct xfrm_state *x; struct xfrm_state_walk *w; spin_lock_bh(&net->xfrm.xfrm_state_lock); list_for_each_entry(w, &net->xfrm.state_all, all) { x = container_of(w, struct xfrm_state, km); if (x->props.family != family || x->id.spi != spi) continue; xfrm_state_hold(x); spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; } spin_unlock_bh(&net->xfrm.xfrm_state_lock); return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Fan Du10695.50%150.00%
Li RongQing54.50%150.00%
Total111100.00%2100.00%

EXPORT_SYMBOL(xfrm_state_lookup_byspi);
static void __xfrm_state_insert(struct xfrm_state *x) { struct net *net = xs_net(x); unsigned int h; list_add(&x->km.all, &net->xfrm.state_all); h = xfrm_dst_hash(net, &x->id.daddr, &x->props.saddr, x->props.reqid, x->props.family); hlist_add_head_rcu(&x->bydst, net->xfrm.state_bydst + h); h = xfrm_src_hash(net, &x->id.daddr, &x->props.saddr, x->props.family); hlist_add_head_rcu(&x->bysrc, net->xfrm.state_bysrc + h); if (x->id.spi) { h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto, x->props.family); hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h); } tasklet_hrtimer_start(&x->mtimer, ktime_set(1, 0), HRTIMER_MODE_REL); if (x->replay_maxage) mod_timer(&x->rtimer, jiffies + x->replay_maxage); net->xfrm.state_num++; xfrm_hash_grow_check(net, x->bydst.next != NULL); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller13052.21%726.92%
Alexey Dobriyan4618.47%726.92%
Hideaki Yoshifuji / 吉藤英明208.03%13.85%
Masahide Nakamura124.82%311.54%
Yury Polyanskiy104.02%13.85%
Timo Teräs93.61%13.85%
Alexey Kuznetsov72.81%13.85%
Kazunori Miyazawa52.01%13.85%
Herbert Xu52.01%27.69%
Florian Westphal31.20%13.85%
Kunihiro Ishiguro20.80%13.85%
Total249100.00%26100.00%

/* net->xfrm.xfrm_state_lock is held */
static void __xfrm_state_bump_genids(struct xfrm_state *xnew) { struct net *net = xs_net(xnew); unsigned short family = xnew->props.family; u32 reqid = xnew->props.reqid; struct xfrm_state *x; unsigned int h; u32 mark = xnew->mark.v & xnew->mark.m; h = xfrm_dst_hash(net, &xnew->id.daddr, &xnew->props.saddr, reqid, family); hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) { if (x->props.family == family && x->props.reqid == reqid && (mark & x->mark.m) == x->mark.v && xfrm_addr_equal(&x->id.daddr, &xnew->id.daddr, family) && xfrm_addr_equal(&x->props.saddr, &xnew->props.saddr, family)) x->genid++; } }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller12872.73%228.57%
Jamal Hadi Salim3117.61%114.29%
Alexey Dobriyan147.95%228.57%
Hideaki Yoshifuji / 吉藤英明21.14%114.29%
Herbert Xu10.57%114.29%
Total176100.00%7100.00%


void xfrm_state_insert(struct xfrm_state *x) { struct net *net = xs_net(x); spin_lock_bh(&net->xfrm.xfrm_state_lock); __xfrm_state_bump_genids(x); __xfrm_state_insert(x); spin_unlock_bh(&net->xfrm.xfrm_state_lock); }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller3264.00%266.67%
Fan Du1836.00%133.33%
Total50100.00%3100.00%

EXPORT_SYMBOL(xfrm_state_insert); /* net->xfrm.xfrm_state_lock is held */
static struct xfrm_state *__find_acq_core(struct net *net, const struct xfrm_mark *m, unsigned short family, u8 mode, u32 reqid, u8 proto, const xfrm_address_t *daddr, const xfrm_address_t *saddr, int create) { unsigned int h = xfrm_dst_hash(net, daddr, saddr, reqid, family); struct xfrm_state *x; u32 mark = m->v & m->m; hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) { if (x->props.reqid != reqid || x->props.mode != mode || x->props.family != family || x->km.state != XFRM_STATE_ACQ || x->id.spi != 0 || x->id.proto != proto || (mark & x->mark.m) != x->mark.v || !xfrm_addr_equal(&x->id.daddr, daddr, family) || !xfrm_addr_equal(&x->props.saddr, saddr, family)) continue; xfrm_state_hold(x); return x; } if (!create) return NULL; x = xfrm_state_alloc(net); if (likely(x)) { switch (family) { case AF_INET: x->sel.daddr.a4 = daddr->a4; x->sel.saddr.a4 = saddr->a4; x->sel.prefixlen_d = 32; x->sel.prefixlen_s = 32; x->props.saddr.a4 = saddr->a4; x->id.daddr.a4 = daddr->a4; break; case AF_INET6: x->sel.daddr.in6 = daddr->in6; x->sel.saddr.in6 = saddr->in6; x->sel.prefixlen_d = 128; x->sel.prefixlen_s = 128; x->props.saddr.in6 = saddr->in6; x->id.daddr.in6 = daddr->in6; break; } x->km.state = XFRM_STATE_ACQ; x->id.proto = proto; x->props.family = family; x->props.mode = mode; x->props.reqid = reqid; x->mark.v = m->v; x->mark.m = m->m; x->lft.hard_add_expires_seconds = net->xfrm.sysctl_acq_expires; xfrm_state_hold(x); tasklet_hrtimer_start(&x->mtimer, ktime_set(net->xfrm.sysctl_acq_expires, 0), HRTIMER_MODE_REL); list_add(&x->km.all, &net->xfrm.state_all); hlist_add_head_rcu(&x->bydst, net->xfrm.state_bydst + h); h = xfrm_src_hash(net, daddr, saddr, family); hlist_add_head_rcu(&x->bysrc, net->xfrm.state_bysrc + h); net->xfrm.state_num++; xfrm_hash_grow_check(net, x->bydst.next != NULL); } return x; }

Contributors

PersonTokensPropCommitsCommitProp
David S. Miller32660.15%718.42%
Jamal Hadi Salim6011.07%37.89%
Alexey Dobriyan499.04%1026.32%
Herbert Xu203.69%37.89%
Masahide Nakamura142.58%25.26%
Alexey Kuznetsov142.58%25.26%
Yury Polyanskiy122.21%12.63%
Jiri Benc122.21%12.63%
Hideaki Yoshifuji / 吉藤英明112.03%25.26%
Joy Latten81.48%12.63%
Wei Yongjun61.11%12.63%
Kunihiro Ishiguro50.92%12.63%
Florian Westphal20.37%12.63%
Mathias Krause10.18%12.63%
Kazunori Miyazawa10.18%12.63%
James Morris10.18%12.63%
Total542100.00%38100.00%

static struct xfrm_state *__xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq);
int xfrm_state_add(struct xfrm_state *x) { struct net *net = xs_net(x); struct xfrm_state *x1, *to_put; int family; int err; u32 mark = x->mark.v & x->mark.m; int use_spi = xfrm_id_proto_match(x->id.proto, IPSEC_PROTO_ANY); family = x->props.family; to_put = NULL; spin_lock_bh(&net->xfrm.xfrm_state_lock); x1 = __xfrm_state_locate(x, use_spi, family); if (x1) { to_put = x1; x1 = NULL; err = -EEXIST; goto out; } if (use_spi && x->km.seq) { x1 = __xfrm_find_acq_byseq(net, mark, x->km.seq); if (x1 && ((x1->id.proto != x->id.proto) || !xfrm_addr_equal(&x1->id.daddr, &x->id.daddr, family))) { to_put = x1; x1 = NULL; } } if (use_spi && !x1) x1 = __find_acq_core(net, &x->mark, family, x->props.mode, x->props.reqid, x->id.proto, &x->id.daddr, &x->props.saddr, 0); __xfrm_state_bump_genids(x); __xfrm_state_insert(x); err = 0; out: spin_unlock_bh(&net->xfrm.xfrm_state_lock); if (x1) { xfrm_state_delete(x1); xfrm_state_put(x1); } if (to_put) xfrm_state_put(to_put); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu18861.84%426.67%
David S. Miller309.87%426.67%
Jamal Hadi Salim227.24%16.67%
Masahide Nakamura206.58%16.67%
Joy Latten165.26%16.67%
Alexey Dobriyan144.61%16.67%
Fan Du82.63%16.67%
Hideaki Yoshifuji / 吉藤英明61.97%213.33%
Total304100.00%15100.00%

EXPORT_SYMBOL(xfrm_state_add); #ifdef CONFIG_XFRM_MIGRATE
static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig) { struct net *net = xs_net(orig); struct xfrm_state *x = xfrm_state_alloc(net); if (!x) goto out; memcpy(&x->id, &orig->id, sizeof(x->id)); memcpy(&x->sel, &orig->sel, sizeof(x->sel)); memcpy(&x->lft, &orig->lft, sizeof(x->lft)); x->props.mode = orig->props.mode; x->props.replay_window = orig->props.replay_window; x->props.reqid = orig->props.reqid; x->props.family = orig->props.family; x->props.saddr = orig->props.saddr; if (orig->aalg) { x->aalg = xfrm_algo_auth_clone(orig->aalg); if (!x->aalg) goto error; } x->props.aalgo = orig->props.aalgo; if (orig->aead) { x->aead = xfrm_algo_aead_clone(orig->aead); if (!x->aead) goto error; } if (orig->ealg) { x->ealg = xfrm_algo_clone(orig->ealg); if (!x->ealg) goto error; } x->props.ealgo = orig->props.ealgo; if (orig->calg) { x->calg = xfrm_algo_clone(orig->calg); if (!x->calg) goto error; } x->props.calgo = orig->props.calgo; if (orig->encap) { x->encap = kmemdup(orig->encap, sizeof(*x->encap), GFP_KERNEL); if (!x->encap) goto error; } if (orig->coaddr) { x->coaddr = kmemdup(orig->coaddr, sizeof(*x->coaddr), GFP_KERNEL); if (!x->coaddr) goto error; } if (orig->replay_esn) { if (xfrm_replay_clone(x, orig)) goto error; } memcpy(&x->mark, &orig->mark, sizeof(x->mark)); if (xfrm_init_state(x) < 0) goto error; x->props.flags = orig->props.flags; x->props.extra_flags = orig->props.extra_flags; x->tfcpad = orig->tfcpad; x->replay_maxdiff = orig->replay_maxdiff; x->replay_maxage = orig->replay_maxage; x->curlft.add_time = orig->curlft.add_time; x->km.state = orig->km.state; x->km.seq = orig->km.seq; return x; error: xfrm_state_put(x); out: return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Shinta Sugimoto41075.65%19.09%
Steffen Klassert7714.21%327.27%
Jamal Hadi Salim203.69%19.09%
Alexey Dobriyan132.40%218.18%
Nicolas Dichtel122.21%19.09%
Herbert Xu81.48%19.09%
Martin Willi10.18%19.09%
Eric Dumazet10.18%19.09%
Total542100.00%11100.00%


struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net) { unsigned int h; struct xfrm_state *x = NULL; spin_lock_bh(&net->xfrm.xfrm_state_lock); if (m->reqid) { h = xfrm_dst_hash(net, &m->old_daddr, &m->old_saddr, m->reqid, m->old_family); hlist_for_each_entry(x, net->xfrm.state_bydst+h, bydst) { if (x->props.mode != m->mode || x->id.proto != m->proto) continue; if (m->reqid && x->props.reqid != m->reqid) continue; if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr, m->old_family) || !xfrm_addr_equal(&x->props.saddr, &m->old_saddr, m->old_family)) continue; xfrm_state_hold(x); break; } } else { h = xfrm_src_hash(net, &m->old_daddr, &m->old_saddr, m->old_family); hlist_for_each_entry(x, net->xfrm.state_bysrc+h, bysrc) { if (x->props.mode != m->mode || x->id.proto != m->proto) continue; if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr, m->old_family) || !xfrm_addr_equal(&x->props.saddr, &m->old_saddr, m->old_family)) continue; xfrm_state_hold(x); break; } } spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; }

Contributors

PersonTokensPropCommitsCommitProp
Shinta Sugimoto24384.08%120.00%
Steffen Klassert258.65%120.00%
Fan Du93.11%120.00%
Hideaki Yoshifuji / 吉藤英明82.77%120.00%
Alexey Dobriyan41.38%120.00%
Total289100.00%5100.00%

EXPORT_SYMBOL(xfrm_migrate_state_find);
struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, struct xfrm_migrate *m) { struct xfrm_state *xc; xc = xfrm_state_clone(x); if (!xc) return NULL; memcpy(&xc->id.daddr, &m->new_daddr, sizeof(xc->id.daddr)); memcpy(&xc->props.saddr, &m->new_saddr, sizeof(xc->props.saddr)); /* add state */ if (xfrm_addr_equal(&x->id.daddr, &m->new_daddr, m->new_family)) { /* a care is needed when the destination address of the state is to be updated as it is a part of triplet */ xfrm_state_insert(xc); } else { if (xfrm_state_add(xc) < 0) goto error; } return xc; error: xfrm_state_put(xc); return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Shinta Sugimoto14198.60%133.33%
Hideaki Yoshifuji / 吉藤英明10.70%133.33%
Thomas Egerer10.70%133.33%
Total143100.00%3100.00%

EXPORT_SYMBOL(xfrm_state_migrate); #endif
int xfrm_state_update(struct xfrm_state *x) { struct xfrm_state *x1, *to_put; int err; int use_spi = xfrm_id_proto_match(x->id.proto, IPSEC_PROTO_ANY); struct net *net = xs_net(x); to_put = NULL; spin_lock_bh(&net->xfrm.xfrm_state_lock); x1 = __xfrm_state_locate(x, use_spi, x->props.family); err = -ESRCH; if (!x1) goto out; if (xfrm_state_kern(x1)) { to_put = x1; err = -EEXIST; goto out; } if (x1->km.state == XFRM_STATE_ACQ) { __xfrm_state_insert(x); x = NULL; } err = 0; out: spin_unlock_bh(&net->xfrm.xfrm_state_lock); if (to_put) xfrm_state_put(to_put); if (err) return err; if (!x) { xfrm_state_delete(x1); xfrm_state_put(x1); return 0; } err = -EINVAL; spin_lock_bh(&x1->lock); if (likely(x1->km.state == XFRM_STATE_VALID)) { if (x->encap && x1->encap) memcpy(x1->encap, x->encap, sizeof(*x1->encap)); if (x->coaddr && x1->coaddr) { memcpy(x1->coaddr, x->coaddr, sizeof(*x1->coaddr)); } if (!use_spi && memcmp(&x1->sel, &x->sel, sizeof(x1->sel))) memcpy(&x1->sel, &x->sel, sizeof(x1->sel)); memcpy(&x1->lft, &x->lft, sizeof(x1->lft)); x1->km.dying = 0; tasklet_hrtimer_start(&x1->mtimer, ktime_set(1, 0), HRTIMER_MODE_REL); if (x1->curlft.use_time) xfrm_state_check_expire(x1); err = 0; x->km.state = XFRM_STATE_DEAD; __xfrm_state_put(x); } spin_unlock_bh(&x1->lock); xfrm_state_put(x1); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu24760.99%433.33%
Noriaki Takamiya7618.77%18.33%
David S. Miller245.93%216.67%
Fan Du184.44%18.33%
Masahide Nakamura163.95%18.33%
Tushar Gohad133.21%18.33%
Yury Polyanskiy102.47%18.33%
Hideaki Yoshifuji / 吉藤英明10.25%18.33%
Total405100.00%12100.00%

EXPORT_SYMBOL(xfrm_state_update);
int xfrm_state_check_expire(struct xfrm_state *x) { if (!x->curlft.use_time) x->curlft.use_time = get_seconds(); if (x->curlft.bytes >= x->lft.hard_byte_limit || x->curlft.packets >= x->lft.hard_packet_limit) { x->km.state = XFRM_STATE_EXPIRED; tasklet_hrtimer_start(&x->mtimer, 0, HRTIMER_MODE_REL); return -EINVAL; } if (!x->km.dying && (x->curlft.bytes >= x->lft.soft_byte_limit || x->curlft.packets >= x->lft.soft_packet_limit)) { x->km.dying = 1; km_state_expired(x, 0, 0); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明5640.88%19.09%
Alexey Kuznetsov4129.93%218.18%
Herbert Xu1913.87%218.18%
Kazunori Miyazawa96.57%19.09%
Yury Polyanskiy53.65%19.09%
Kunihiro Ishiguro21.46%19.09%
Jamal Hadi Salim21.46%19.09%
James Morris21.46%19.09%
David S. Miller10.73%19.09%
Total137100.00%11100.00%

EXPORT_SYMBOL(xfrm_state_check_expire);
struct xfrm_state * xfrm_state_lookup(struct net *net, u32 mark, const xfrm_address_t *daddr, __be32 spi, u8 proto, unsigned short family) { struct xfrm_state *x; rcu_read_lock(); x = __xfrm_state_lookup(net, mark, daddr, spi, proto, family); rcu_read_unlock(); return x; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明3557.38%111.11%
Alexey Dobriyan711.48%111.11%
Jamal Hadi Salim58.20%111.11%
David S. Miller46.56%222.22%
Florian Westphal46.56%111.11%
Kazunori Miyazawa34.92%111.11%
Alexey Kuznetsov23.28%111.11%
Al Viro11.64%111.11%
Total61100.00%9100.00%

EXPORT_SYMBOL(xfrm_state_lookup);
struct xfrm_state * xfrm_state_lookup_byaddr(struct net *net, u32 mark, const xfrm_address_t *daddr, const xfrm_address_t *saddr, u8 proto, unsigned short family) { struct xfrm_state *x; spin_lock_bh(&net->xfrm.xfrm_state_lock); x = __xfrm_state_lookup_byaddr(net, mark, daddr, saddr, proto, family); spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; }

Contributors

PersonTokensPropCommitsCommitProp
Masahide Nakamura4963.64%114.29%
Fan Du810.39%114.29%
Alexey Dobriyan79.09%114.29%
Jamal Hadi Salim56.49%114.29%
David S. Miller56.49%228.57%
Hideaki Yoshifuji / 吉藤英明33.90%114.29%
Total77100.00%7100.00%

EXPORT_SYMBOL(xfrm_state_lookup_byaddr);
struct xfrm_state * xfrm_find_acq(struct net *net, const struct xfrm_mark *mark, u8 mode, u32 reqid, u8 proto, const xfrm_address_t *daddr, const xfrm_address_t *saddr, int create, unsigned short family) { struct xfrm_state *x; spin_lock_bh(&net->xfrm.xfrm_state_lock); x = __find_acq_core(net, mark, family, mode, reqid, proto, daddr, saddr, create); spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4951.58%18.33%
Kazunori Miyazawa1212.63%18.33%
Fan Du88.42%18.33%
Alexey Dobriyan77.37%18.33%
Jamal Hadi Salim77.37%18.33%
David S. Miller55.26%216.67%
Masahide Nakamura33.16%18.33%
Alexey Kuznetsov22.11%216.67%
Herbert Xu11.05%18.33%
Mathias Krause11.05%18.33%
Total95100.00%12100.00%

EXPORT_SYMBOL(xfrm_find_acq); #ifdef CONFIG_XFRM_SUB_POLICY
int xfrm_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n, unsigned short family, struct net *net) { int err = 0; struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family); if (!afinfo) return -EAFNOSUPPORT; spin_lock_bh(&net->xfrm.xfrm_state_lock); /*FIXME*/ if (afinfo->tmpl_sort) err = afinfo->tmpl_sort(dst, src, n); spin_unlock_bh(&net->xfrm.xfrm_state_lock); rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Masahide Nakamura8383.84%133.33%
Fan Du1414.14%133.33%
Florian Westphal22.02%133.33%
Total99100.00%3100.00%

EXPORT_SYMBOL(xfrm_tmpl_sort);
int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n, unsigned short family) { int err = 0; struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family); struct net *net = xs_net(*src); if (!afinfo) return -EAFNOSUPPORT; spin_lock_bh(&net->xfrm.xfrm_state_lock); if (afinfo->state_sort) err = afinfo->state_sort(dst, src, n); spin_unlock_bh(&net->xfrm.xfrm_state_lock); rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Masahide Nakamura8379.81%125.00%
Fan Du1817.31%125.00%
Florian Westphal21.92%125.00%
Steffen Klassert10.96%125.00%
Total104100.00%4100.00%

EXPORT_SYMBOL(xfrm_state_sort); #endif /* Silly enough, but I'm lazy to build resolution list */
static struct xfrm_state *__xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq) { int i; for (i = 0; i <= net->xfrm.state_hmask; i++) { struct xfrm_state *x; hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) { if (x->km.seq == seq && (mark & x->mark.m) == x->mark.v && x->km.state == XFRM_STATE_ACQ) { xfrm_state_hold(x); return x; } } } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明3634.95%16.67%
Jamal Hadi Salim1918.45%213.33%
Alexey Dobriyan1110.68%213.33%
David S. Miller98.74%320.00%
Patrick McHardy87.77%16.67%
Kazunori Miyazawa76.80%16.67%
Herbert Xu65.83%16.67%
Alexey Kuznetsov54.85%213.33%
James Morris10.97%16.67%
Kunihiro Ishiguro10.97%16.67%
Total103100.00%15100.00%


struct xfrm_state *xfrm_find_acq_byseq(struct net *net, u32 mark, u32 seq) { struct xfrm_state *x; spin_lock_bh(&net->xfrm.xfrm_state_lock); x = __xfrm_find_acq_byseq(net, mark, seq); spin_unlock_bh(&net->xfrm.xfrm_state_lock); return x; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu2849.12%120.00%
Alexey Kuznetsov915.79%120.00%
Fan Du814.04%120.00%
Alexey Dobriyan712.28%120.00%
Jamal Hadi Salim58.77%120.00%
Total57100.00%5100.00%

EXPORT_SYMBOL(xfrm_find_acq_byseq);
u32 xfrm_get_acqseq(void) { u32 res; static atomic_t acqseq; do { res = atomic_inc_return(&acqseq); } while (!res); return res; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明2264.71%150.00%
Jamal Hadi Salim1235.29%150.00%
Total34100.00%2100.00%

EXPORT_SYMBOL(xfrm_get_acqseq);
int verify_spi_info(u8 proto, u32 min, u32 max) { switch (proto) { case IPPROTO_AH: case IPPROTO_ESP: break; case IPPROTO_COMP: /* IPCOMP spi is 16-bits. */ if (max >= 0x10000) return -EINVAL; break; default: return -EINVAL; } if (min > max) return -EINVAL; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Fan Du60100.00%1100.00%
Total60100.00%1100.00%

EXPORT_SYMBOL(verify_spi_info);
int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high) { struct net *net = xs_net(x); unsigned int h; struct xfrm_state *x0; int err = -ENOENT; __be32 minspi = htonl(low); __be32 maxspi = htonl(high); u32 mark = x->mark.v & x->mark.m; spin_lock_bh(&x->lock); if (x->km.state == XFRM_STATE_DEAD) goto unlock; err = 0; if (x->id.spi) goto unlock; err = -ENOENT; if (minspi == maxspi) { x0 = xfrm_state_lookup(net, mark, &x->id.daddr, minspi, x->id.proto, x->props.family); if (x0) { xfrm_state_put(x0); goto unlock; } x->id.spi = minspi; } else { u32 spi = 0; for (h = 0; h < high-low+1; h++) { spi = low + prandom_u32()%(high-low+1); x0 = xfrm_state_lookup(net, mark, &x->id.daddr, htonl(spi), x->id.proto, x->props.family); if (x0 == NULL) { x->id.spi = htonl(spi); break; } xfrm_state_put(x0); } } if (x->id.spi) { spin_lock_bh(&net->xfrm.xfrm_state_lock); h = xfrm_spi_hash(net, &x->id.daddr, x->id.spi, x->id.proto, x->props.family); hlist_add_head_rcu(&x->byspi, net->xfrm.state_byspi + h); spin_unlock_bh(&net->xfrm.xfrm_state_lock); err = 0; } unlock: spin_unlock_bh(&x->lock); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明12935.05%212.50%
Herbert Xu8924.18%212.50%
Alexey Kuznetsov5514.95%16.25%
Kazunori Miyazawa3710.05%16.25%
Alexey Dobriyan225.98%425.00%
Jamal Hadi Salim195.16%16.25%
Fan Du82.17%16.25%
Al Viro51.36%16.25%
David S. Miller20.54%16.25%
Florian Westphal10.27%16.25%
Aruna-Hewapathirane10.27%16.25%
Total368100.00%16100.00%

EXPORT_SYMBOL(xfrm_alloc_spi);
static bool __xfrm_state_filter_match(struct xfrm_state *x, struct xfrm_address_filter *filter) { if (filter) { if ((filter->family == AF_INET || filter->family == AF_INET6) && x->props.family != filter->family) return false; return addr_match(&x->props.saddr, &filter->saddr, filter->splen) && addr_match(&x->id.daddr, &filter->daddr, filter->dplen); } return true; }

Contributors

PersonTokensPropCommitsCommitProp
Nicolas Dichtel93100.00%2100.00%
Total93100.00%2100.00%


int xfrm_state_walk(struct net *net, struct xfrm_state_walk *walk, int (*func)(struct xfrm_state *, int, void*), void *data) { struct xfrm_state *state; struct xfrm_state_walk *x; int err = 0; if (walk->seq != 0 && list_empty(&walk->all)) return 0; spin_lock_bh(&net->xfrm.xfrm_state_lock); if (list_empty(&walk->all)) x = list_first_entry(&net->xfrm.state_all, struct xfrm_state_walk, all); else x = list_first_entry(&walk->all, struct xfrm_state_walk, all); list_for_each_entry_from(x, &net->xfrm.state_all, all) { if (x->state == XFRM_STATE_DEAD) continue; state = container_of(x, struct xfrm_state, km); if (!xfrm_id_proto_match(state->id.proto, walk->proto)) continue; if (!__xfrm_state_filter_match(state, walk->filter)) continue; err = func(state, walk->seq, data); if (err) { list_move_tail(&walk->all, &x->all); goto out; } walk->seq++; } if (walk->seq == 0) { err = -ENOENT; goto out; } list_del_init(&walk->all); out: spin_unlock_bh(&net->xfrm.xfrm_state_lock); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu7026.52%213.33%
Hideaki Yoshifuji / 吉藤英明6223.48%16.67%
Timo Teräs5320.08%16.67%
Jamal Hadi Salim197.20%16.67%
Alexey Kuznetsov186.82%213.33%
Nicolas Dichtel134.92%16.67%
Alexey Dobriyan114.17%213.33%
Fan Du83.03%16.67%
Masahide Nakamura41.52%16.67%
Kazunori Miyazawa41.52%16.67%
Li RongQing10.38%16.67%
David S. Miller10.38%16.67%
Total264100.00%15100.00%

EXPORT_SYMBOL(xfrm_state_walk);
void xfrm_state_walk_init(struct xfrm_state_walk *walk, u8 proto, struct xfrm_address_filter *filter) { INIT_LIST_HEAD(&walk->all); walk->proto = proto; walk->state = XFRM_STATE_DEAD; walk->seq = 0; walk->filter = filter; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu3876.00%240.00%
Nicolas Dichtel1122.00%240.00%
Hideaki Yoshifuji / 吉藤英明12.00%120.00%
Total50100.00%5100.00%

EXPORT_SYMBOL(xfrm_state_walk_init);
void xfrm_state_walk_done(struct xfrm_state_walk *walk, struct net *net) { kfree(walk->filter); if (list_empty(&walk->all)) return; spin_lock_bh(&net->xfrm.xfrm_state_lock); list_del(&walk->all); spin_unlock_bh(&net->xfrm.xfrm_state_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu4065.57%350.00%
Fan Du1321.31%116.67%
Nicolas Dichtel711.48%116.67%
Chuck Ebbert11.64%116.67%
Total61100.00%6100.00%

EXPORT_SYMBOL(xfrm_state_walk_done);
static void xfrm_replay_timer_handler(unsigned long data) { struct xfrm_state *x = (struct xfrm_state *)data; spin_lock(&x->lock); if (x->km.state == XFRM_STATE_VALID) { if (xfrm_aevent_is_on(xs_net(x))) x->repl->notify(x, XFRM_REPLAY_TIMEOUT); else x->xflags |= XFRM_TIME_DEFER; } spin_unlock(&x->lock); }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim6785.90%250.00%
Alexey Dobriyan67.69%125.00%
Steffen Klassert56.41%125.00%
Total78100.00%4100.00%

static LIST_HEAD(xfrm_km_list);
void km_policy_notify(struct xfrm_policy *xp, int dir, const struct km_event *c) { struct xfrm_mgr *km; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) if (km->notify_policy) km->notify_policy(xp, dir, c); rcu_read_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim3156.36%116.67%
Hideaki Yoshifuji / 吉藤英明1120.00%116.67%
Américo Wang59.09%116.67%
Herbert Xu47.27%116.67%
Alexey Kuznetsov35.45%116.67%
David S. Miller11.82%116.67%
Total55100.00%6100.00%


void km_state_notify(struct xfrm_state *x, const struct km_event *c) { struct xfrm_mgr *km; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) if (km->notify) km->notify(x, c); rcu_read_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim2550.00%116.67%
Hideaki Yoshifuji / 吉藤英明1428.00%116.67%
Américo Wang510.00%116.67%
Alexey Kuznetsov36.00%116.67%
Kazunori Miyazawa24.00%116.67%
David S. Miller12.00%116.67%
Total50100.00%6100.00%

EXPORT_SYMBOL(km_policy_notify); EXPORT_SYMBOL(km_state_notify);
void km_state_expired(struct xfrm_state *x, int hard, u32 portid) { struct km_event c; c.data.hard = hard; c.portid = portid; c.event = XFRM_MSG_EXPIRE; km_state_notify(x, &c); }

Contributors

PersonTokensPropCommitsCommitProp
Jamal Hadi Salim4185.42%233.33%
Eric W. Biedermann36.25%116.67%
Herbert Xu36.25%233.33%
Alexey Kuznetsov12.08%116.67%
Total48100.00%6100.00%

EXPORT_SYMBOL(km_state_expired); /* * We send to all registered managers regardless of failure * We are happy with one success */
int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol) { int err = -EINVAL, acqret; struct xfrm_mgr *km; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) { acqret = km->acquire(x, t, pol); if (!acqret) err = acqret; } rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4358.11%114.29%
Jamal Hadi Salim810.81%114.29%
Alexey Kuznetsov79.46%228.57%
Kazunori Miyazawa68.11%114.29%
Kunihiro Ishiguro56.76%114.29%
Américo Wang56.76%114.29%
Total74100.00%7100.00%

EXPORT_SYMBOL(km_query);
int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport) { int err = -EINVAL; struct xfrm_mgr *km; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) { if (km->new_mapping) err = km->new_mapping(x, ipaddr, sport); if (!err) break; } rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Derek Atkins6691.67%133.33%
Américo Wang56.94%133.33%
Al Viro11.39%133.33%
Total72100.00%3100.00%

EXPORT_SYMBOL(km_new_mapping);
void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 portid) { struct km_event c; c.data.hard = hard; c.portid = portid; c.event = XFRM_MSG_POLEXPIRE; km_policy_notify(pol, dir, &c); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu2852.83%350.00%
Jamal Hadi Salim2241.51%233.33%
Eric W. Biedermann35.66%116.67%
Total53100.00%6100.00%

EXPORT_SYMBOL(km_policy_expired); #ifdef CONFIG_XFRM_MIGRATE
int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, const struct xfrm_migrate *m, int num_migrate, const struct xfrm_kmaddress *k) { int err = -EINVAL; int ret; struct xfrm_mgr *km; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) { if (km->migrate) { ret = km->migrate(sel, dir, type, m, num_migrate, k); if (!ret) err = ret; } } rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Shinta Sugimoto8685.15%125.00%
Arnaud Ebalard76.93%125.00%
Américo Wang54.95%125.00%
David S. Miller32.97%125.00%
Total101100.00%4100.00%

EXPORT_SYMBOL(km_migrate); #endif
int km_report(struct net *net, u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr) { int err = -EINVAL; int ret; struct xfrm_mgr *km; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) { if (km->report) { ret = km->report(net, proto, sel, addr); if (!ret) err = ret; } } rcu_read_unlock(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Masahide Nakamura7586.21%133.33%
Alexey Dobriyan78.05%133.33%
Américo Wang55.75%133.33%
Total87100.00%3100.00%

EXPORT_SYMBOL(km_report);
bool km_is_alive(const struct km_event *c) { struct xfrm_mgr *km; bool is_alive = false; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) { if (km->is_alive && km->is_alive(c)) { is_alive = true; break; } } rcu_read_unlock(); return is_alive; }

Contributors

PersonTokensPropCommitsCommitProp
Horia Geantă60100.00%1100.00%
Total60100.00%1100.00%

EXPORT_SYMBOL(km_is_alive);
int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen) { int err; u8 *data; struct xfrm_mgr *km; struct xfrm_policy *pol = NULL; if (optlen <= 0 || optlen > PAGE_SIZE) return -EMSGSIZE; data = kmalloc(optlen, GFP_KERNEL); if (!data) return -ENOMEM; err = -EFAULT; if (copy_from_user(data, optval, optlen)) goto out; err = -EINVAL; rcu_read_lock(); list_for_each_entry_rcu(km, &xfrm_km_list, list) { pol = km->compile_policy(sk, optname, data, optlen, &err); if (err >= 0) break; } rcu_read_unlock(); if (err >= 0) { xfrm_sk_policy_insert(sk, err, pol); xfrm_pol_put(pol); err = 0; } out: kfree(data); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明12873.99%116.67%
Kunihiro Ishiguro179.83%116.67%
Kazunori Miyazawa179.83%116.67%
Américo Wang52.89%116.67%
Herbert Xu52.89%116.67%
Al Viro10.58%116.67%
Total173100.00%6100.00%

EXPORT_SYMBOL(xfrm_user_policy); static DEFINE_SPINLOCK(xfrm_km_lock);
int xfrm_register_km(struct xfrm_mgr *km) { spin_lock_bh(&xfrm_km_lock); list_add_tail_rcu(&km->list, &xfrm_km_list); spin_unlock_bh(&xfrm_km_lock); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明1130.56%125.00%
Kunihiro Ishiguro1130.56%125.00%
Kazunori Miyazawa1130.56%125.00%
Américo Wang38.33%125.00%
Total36100.00%4100.00%

EXPORT_SYMBOL(xfrm_register_km);
int xfrm_unregister_km(struct xfrm_mgr *km) { spin_lock_bh(&xfrm_km_lock); list_del_rcu(&km->list); spin_unlock_bh(&xfrm_km_lock); synchronize_rcu(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kazunori Miyazawa1747.22%125.00%
Hideaki Yoshifuji / 吉藤英明925.00%125.00%
Américo Wang616.67%125.00%
Kunihiro Ishiguro411.11%125.00%
Total36100.00%4100.00%

EXPORT_SYMBOL(xfrm_unregister_km);
int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo) { int err = 0; if (WARN_ON(afinfo->family >= NPROTO)) return -EAFNOSUPPORT; spin_lock_bh(&xfrm_state_afinfo_lock); if (unlikely(xfrm_state_afinfo[afinfo->family] != NULL)) err = -EEXIST; else rcu_assign_pointer(xfrm_state_afinfo[afinfo->family], afinfo); spin_unlock_bh(&xfrm_state_afinfo_lock); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4355.84%116.67%
Kunihiro Ishiguro1418.18%116.67%
Kazunori Miyazawa1215.58%116.67%
Américo Wang67.79%116.67%
Florian Westphal11.30%116.67%
Li RongQing11.30%116.67%
Total77100.00%6100.00%

EXPORT_SYMBOL(xfrm_state_register_afinfo);
int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo) { int err = 0, family = afinfo->family; if (WARN_ON(family >= NPROTO)) return -EAFNOSUPPORT; spin_lock_bh(&xfrm_state_afinfo_lock); if (likely(xfrm_state_afinfo[afinfo->family] != NULL)) { if (rcu_access_pointer(xfrm_state_afinfo[family]) != afinfo) err = -EINVAL; else RCU_INIT_POINTER(xfrm_state_afinfo[afinfo->family], NULL); } spin_unlock_bh(&xfrm_state_afinfo_lock); synchronize_rcu(); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4444.90%120.00%
Kunihiro Ishiguro2020.41%120.00%
Kazunori Miyazawa1616.33%120.00%
Florian Westphal99.18%120.00%
Américo Wang99.18%120.00%
Total98100.00%5100.00%

EXPORT_SYMBOL(xfrm_state_unregister_afinfo);
struct xfrm_state_afinfo *xfrm_state_afinfo_get_rcu(unsigned int family) { if (unlikely(family >= NPROTO)) return NULL; return rcu_dereference(xfrm_state_afinfo[family]); }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal32100.00%1100.00%
Total32100.00%1100.00%


struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned int family) { struct xfrm_state_afinfo *afinfo; if (unlikely(family >= NPROTO)) return NULL; rcu_read_lock(); afinfo = rcu_dereference(xfrm_state_afinfo[family]); if (unlikely(!afinfo)) rcu_read_unlock(); return afinfo; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明3665.45%116.67%
Kazunori Miyazawa814.55%116.67%
Américo Wang712.73%116.67%
Herbert Xu35.45%233.33%
Kunihiro Ishiguro11.82%116.67%
Total55100.00%6100.00%

/* Temporarily located here until net/xfrm/xfrm_tunnel.c is created */
void xfrm_state_delete_tunnel(struct xfrm_state *x) { if (x->tunnel) { struct xfrm_state *t = x->tunnel; if (atomic_read(&t->tunnel_users) == 2) xfrm_state_delete(t); atomic_dec(&t->tunnel_users); xfrm_state_put(t); x->tunnel = NULL; } }

Contributors

PersonTokensPropCommitsCommitProp
James Morris63100.00%1100.00%
Total63100.00%1100.00%

EXPORT_SYMBOL(xfrm_state_delete_tunnel);
int xfrm_state_mtu(struct xfrm_state *x, int mtu) { const struct xfrm_type *type = READ_ONCE(x->type); if (x->km.state == XFRM_STATE_VALID && type && type->get_mtu) return type->get_mtu(x, mtu); return mtu - x->props.header_len; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu3963.93%125.00%
Florian Westphal1219.67%125.00%
Patrick McHardy1016.39%250.00%
Total61100.00%4100.00%


int __xfrm_init_state(struct xfrm_state *x, bool init_replay) { struct xfrm_state_afinfo *afinfo; struct xfrm_mode *inner_mode; int family = x->props.family; int err; err = -EAFNOSUPPORT; afinfo = xfrm_state_get_afinfo(family); if (!afinfo) goto error; err = 0; if (afinfo->init_flags) err = afinfo->init_flags(x); rcu_read_unlock(); if (err) goto error; err = -EPROTONOSUPPORT; if (x->sel.family != AF_UNSPEC) { inner_mode = xfrm_get_mode(x->props.mode, x->sel.family); if (inner_mode == NULL) goto error; if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL) && family != x->sel.family) { xfrm_put_mode(inner_mode); goto error; } x->inner_mode = inner_mode; } else { struct xfrm_mode *inner_mode_iaf; int iafamily = AF_INET; inner_mode = xfrm_get_mode(x->props.mode, x->props.family); if (inner_mode == NULL) goto error; if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL)) { xfrm_put_mode(inner_mode); goto error; } x->inner_mode = inner_mode; if (x->props.family == AF_INET) iafamily = AF_INET6; inner_mode_iaf = xfrm_get_mode(x->props.mode, iafamily); if (inner_mode_iaf) { if (inner_mode_iaf->flags & XFRM_MODE_FLAG_TUNNEL) x->inner_mode_iaf = inner_mode_iaf; else xfrm_put_mode(inner_mode_iaf); } } x->type = xfrm_get_type(x->id.proto, family); if (x->type == NULL) goto error; err = x->type->init_state(x); if (err) goto error; x->outer_mode = xfrm_get_mode(x->props.mode, family); if (x->outer_mode == NULL) { err = -EPROTONOSUPPORT; goto error; } if (init_replay) { err = xfrm_init_replay(x); if (err) goto error; } x->km.state = XFRM_STATE_VALID; error: return err; }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu21153.96%444.44%
Kazunori Miyazawa11228.64%111.11%
Martin Willi358.95%111.11%
Wei Yongjun246.14%111.11%
Julia Lawall71.79%111.11%
Florian Westphal20.51%111.11%
Total391100.00%9100.00%

EXPORT_SYMBOL(__xfrm_init_state);
int xfrm_init_state(struct xfrm_state *x) { return __xfrm_init_state(x, true); }

Contributors

PersonTokensPropCommitsCommitProp
Wei Yongjun18100.00%1100.00%
Total18100.00%1100.00%

EXPORT_SYMBOL(xfrm_init_state);
int __net_init xfrm_state_init(struct net *net) { unsigned int sz; INIT_LIST_HEAD(&net->xfrm.state_all); sz = sizeof(struct hlist_head) * 8; net->xfrm.state_bydst = xfrm_hash_alloc(sz); if (!net->xfrm.state_bydst) goto out_bydst; net->xfrm.state_bysrc = xfrm_hash_alloc(sz); if (!net->xfrm.state_bysrc) goto out_bysrc; net->xfrm.state_byspi = xfrm_hash_alloc(sz); if (!net->xfrm.state_byspi) goto out_byspi; net->xfrm.state_hmask = ((sz / sizeof(struct hlist_head)) - 1); net->xfrm.state_num = 0; INIT_WORK(&net->xfrm.state_hash_work, xfrm_hash_resize); spin_lock_init(&net->xfrm.xfrm_state_lock); return 0; out_byspi: xfrm_hash_free(net->xfrm.state_bysrc, sz); out_bysrc: xfrm_hash_free(net->xfrm.state_bydst, sz); out_bydst: return -ENOMEM; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan13269.84%956.25%
David S. Miller3719.58%212.50%
Kazunori Miyazawa105.29%16.25%
James Morris31.59%16.25%
Masahide Nakamura31.59%16.25%
Fan Du21.06%16.25%
Kunihiro Ishiguro21.06%16.25%
Total189100.00%16100.00%


void xfrm_state_fini(struct net *net) { unsigned int sz; flush_work(&net->xfrm.state_hash_work); xfrm_state_flush(net, IPSEC_PROTO_ANY, false); flush_work(&xfrm_state_gc_work); WARN_ON(!list_empty(&net->xfrm.state_all)); sz = (net->xfrm.state_hmask + 1) * sizeof(struct hlist_head); WARN_ON(!hlist_empty(net->xfrm.state_byspi)); xfrm_hash_free(net->xfrm.state_byspi, sz); WARN_ON(!hlist_empty(net->xfrm.state_bysrc)); xfrm_hash_free(net->xfrm.state_bysrc, sz); WARN_ON(!hlist_empty(net->xfrm.state_bydst)); xfrm_hash_free(net->xfrm.state_bydst, sz); }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan14198.60%777.78%
Tetsuo Handa10.70%111.11%
Florian Westphal10.70%111.11%
Total143100.00%9100.00%

#ifdef CONFIG_AUDITSYSCALL
static void xfrm_audit_helper_sainfo(struct xfrm_state *x, struct audit_buffer *audit_buf) { struct xfrm_sec_ctx *ctx = x->security; u32 spi = ntohl(x->id.spi); if (ctx) audit_log_format(audit_buf, " sec_alg=%u sec_doi=%u sec_obj=%s", ctx->ctx_alg, ctx->ctx_doi, ctx->ctx_str); switch (x->props.family) { case AF_INET: audit_log_format(audit_buf, " src=%pI4 dst=%pI4", &x->props.saddr.a4, &x->id.daddr.a4); break; case AF_INET6: audit_log_format(audit_buf, " src=%pI6 dst=%pI6", x->props.saddr.a6, x->id.daddr.a6); break; } audit_log_format(audit_buf, " spi=%u(0x%x)", spi, spi); }

Contributors

PersonTokensPropCommitsCommitProp
Joy Latten10072.99%120.00%
Paul Moore3324.09%240.00%
Harvey Harrison42.92%240.00%
Total137100.00%5100.00%


static void xfrm_audit_helper_pktinfo(struct sk_buff *skb, u16 family, struct audit_buffer *audit_buf) { const struct iphdr *iph4; const struct ipv6hdr *iph6; switch (family) { case AF_INET: iph4 = ip_hdr(skb); audit_log_format(audit_buf, " src=%pI4 dst=%pI4", &iph4->saddr, &iph4->daddr); break; case AF_INET6: iph6 = ipv6_hdr(skb); audit_log_format(audit_buf, " src=%pI6 dst=%pI6 flowlbl=0x%x%02x%02x", &iph6->saddr, &iph6->daddr, iph6->flow_lbl[0] & 0x0f, iph6->flow_lbl[1], iph6->flow_lbl[2]); break; } }

Contributors

PersonTokensPropCommitsCommitProp
Paul Moore10893.10%120.00%
Harvey Harrison65.17%360.00%
Eric Dumazet21.72%120.00%
Total116100.00%5100.00%


void xfrm_audit_state_add(struct xfrm_state *x, int result, bool task_valid) { struct audit_buffer *audit_buf; audit_buf = xfrm_audit_start("SAD-add"); if (audit_buf == NULL) return; xfrm_audit_helper_usrinfo(task_valid, audit_buf); xfrm_audit_helper_sainfo(x, audit_buf); audit_log_format(audit_buf, " res=%u", result); audit_log_end(audit_buf); }

Contributors

PersonTokensPropCommitsCommitProp
Joy Latten4571.43%120.00%
Paul Moore1422.22%240.00%
Tetsuo Handa34.76%120.00%
Eric Paris11.59%120.00%
Total63100.00%5100.00%

EXPORT_SYMBOL_GPL(xfrm_audit_state_add);
void xfrm_audit_state_delete(struct xfrm_state *x, int result, bool task_valid) { struct audit_buffer *audit_buf; audit_buf = xfrm_audit_start("SAD-delete"); if (audit_buf == NULL) return; xfrm_audit_helper_usrinfo(task_valid, audit_buf); xfrm_audit_helper_sainfo(x, audit_buf); audit_log_format(audit_buf, " res=%u", result); audit_log_end(audit_buf); }

Contributors

PersonTokensPropCommitsCommitProp
Joy Latten4571.43%120.00%
Paul Moore1422.22%240.00%
Tetsuo Handa34.76%120.00%
Eric Paris11.59%120.00%
Total63100.00%5100.00%

EXPORT_SYMBOL_GPL(xfrm_audit_state_delete);
void xfrm_audit_state_replay_overflow(struct xfrm_state *x, struct sk_buff *skb) { struct audit_buffer *audit_buf; u32 spi; audit_buf = xfrm_audit_start("SA-replay-overflow"); if (audit_buf == NULL) return; xfrm_audit_helper_pktinfo(skb, x->props.family, audit_buf); /* don't record the sequence number because it's inherent in this kind * of audit message */ spi = ntohl(x->id.spi); audit_log_format(audit_buf, " spi=%u(0x%x)", spi, spi); audit_log_end(audit_buf); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Moore78100.00%1100.00%
Total78100.00%1100.00%

EXPORT_SYMBOL_GPL(xfrm_audit_state_replay_overflow);
void xfrm_audit_state_replay(struct xfrm_state *x, struct sk_buff *skb, __be32 net_seq) { struct audit_buffer *audit_buf; u32 spi; audit_buf = xfrm_audit_start("SA-replayed-pkt"); if (audit_buf == NULL) return; xfrm_audit_helper_pktinfo(skb, x->props.family, audit_buf); spi = ntohl(x->id.spi); audit_log_format(audit_buf, " spi=%u(0x%x) seqno=%u", spi, spi, ntohl(net_seq)); audit_log_end(audit_buf); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Moore85100.00%1100.00%
Total85100.00%1100.00%

EXPORT_SYMBOL_GPL(xfrm_audit_state_replay);
void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family) { struct audit_buffer *audit_buf; audit_buf = xfrm_audit_start("SA-notfound"); if (audit_buf == NULL) return; xfrm_audit_helper_pktinfo(skb, family, audit_buf); audit_log_end(audit_buf); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Moore46100.00%1100.00%
Total46100.00%1100.00%

EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound_simple);
void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family, __be32 net_spi, __be32 net_seq) { struct audit_buffer *audit_buf; u32 spi; audit_buf = xfrm_audit_start("SA-notfound"); if (audit_buf == NULL) return; xfrm_audit_helper_pktinfo(skb, family, audit_buf); spi = ntohl(net_spi); audit_log_format(audit_buf, " spi=%u(0x%x) seqno=%u", spi, spi, ntohl(net_seq)); audit_log_end(audit_buf); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Moore78100.00%1100.00%
Total78100.00%1100.00%

EXPORT_SYMBOL_GPL(xfrm_audit_state_notfound);
void xfrm_audit_state_icvfail(struct xfrm_state *x, struct sk_buff *skb, u8 proto) { struct audit_buffer *audit_buf; __be32 net_spi; __be32 net_seq; audit_buf = xfrm_audit_start("SA-icv-failure"); if (audit_buf == NULL) return; xfrm_audit_helper_pktinfo(skb, x->props.family, audit_buf); if (xfrm_parse_spi(skb, proto, &net_spi, &net_seq) == 0) { u32 spi = ntohl(net_spi); audit_log_format(audit_buf, " spi=%u(0x%x) seqno=%u", spi, spi, ntohl(net_seq)); } audit_log_end(audit_buf); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Moore104100.00%1100.00%
Total104100.00%1100.00%

EXPORT_SYMBOL_GPL(xfrm_audit_state_icvfail); #endif /* CONFIG_AUDITSYSCALL */

Overall Contributors

PersonTokensPropCommitsCommitProp
David S. Miller204716.04%3012.93%
Herbert Xu188514.77%3012.93%
Alexey Kuznetsov10338.09%73.02%
Shinta Sugimoto9007.05%10.43%
Hideaki Yoshifuji / 吉藤英明8806.89%41.72%
Jamal Hadi Salim8766.86%146.03%
Alexey Dobriyan8006.27%2410.34%
Paul Moore5834.57%20.86%
Masahide Nakamura4553.56%93.88%
Fan Du4353.41%83.45%
Joy Latten4113.22%41.72%
Florian Westphal3382.65%146.03%
Kazunori Miyazawa3142.46%20.86%
James Morris2241.75%62.59%
Patrick McHardy1461.14%83.45%
Nicolas Dichtel1391.09%41.72%
Américo Wang1341.05%31.29%
Adrian Bunk1281.00%20.86%
Steffen Klassert1270.99%73.02%
Horia Geantă1050.82%10.43%
Yury Polyanskiy1040.81%10.43%
Kunihiro Ishiguro900.71%10.43%
Noriaki Takamiya830.65%10.43%
Derek Atkins710.56%10.43%
Timo Teräs700.55%10.43%
Wei Yongjun680.53%20.86%
Thomas Egerer560.44%20.86%
Venkat Yekkirala390.31%10.43%
Martin Willi360.28%20.86%
Pavel Emelyanov340.27%20.86%
Tetsuo Handa170.13%10.43%
Eric Dumazet160.13%41.72%
Tushar Gohad130.10%10.43%
Jiri Benc120.09%10.43%
Harvey Harrison100.08%31.29%
Al Viro100.08%52.16%
Trent Jaeger80.06%10.43%
Eric W. Biedermann70.05%10.43%
Li RongQing70.05%31.29%
Ilan Tayari70.05%10.43%
Julia Lawall70.05%10.43%
Arnaud Ebalard70.05%10.43%
David Howells40.03%10.43%
Andrew Morton40.03%10.43%
Thomas Gleixner40.03%10.43%
Ying Xue30.02%10.43%
Tejun Heo30.02%10.43%
Ilpo Järvinen20.02%10.43%
Cheng Renquan20.02%10.43%
Mathias Krause20.02%10.43%
Eric Paris20.02%10.43%
Chuck Ebbert10.01%10.43%
Joakim Koskela10.01%10.43%
Aruna-Hewapathirane10.01%10.43%
Linus Torvalds10.01%10.43%
Panagiotis Issaris10.01%10.43%
Alexander Alemayhu10.01%10.43%
Total12764100.00%232100.00%
Directory: net/xfrm
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