diff options
Diffstat (limited to 'net/xfrm/xfrm_state.c')
-rw-r--r-- | net/xfrm/xfrm_state.c | 74 |
1 files changed, 41 insertions, 33 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index ca6bee18346d..3d2fe7712ac5 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -751,7 +751,7 @@ xfrm_dev_state_flush_secctx_check(struct net *net, struct net_device *dev, bool for (i = 0; i <= net->xfrm.state_hmask; i++) { struct xfrm_state *x; - struct xfrm_state_offload *xso; + struct xfrm_dev_offload *xso; hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) { xso = &x->xso; @@ -835,7 +835,7 @@ int xfrm_dev_state_flush(struct net *net, struct net_device *dev, bool task_vali err = -ESRCH; for (i = 0; i <= net->xfrm.state_hmask; i++) { struct xfrm_state *x; - struct xfrm_state_offload *xso; + struct xfrm_dev_offload *xso; restart: hlist_for_each_entry(x, net->xfrm.state_bydst+i, bydst) { xso = &x->xso; @@ -1579,9 +1579,6 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, memcpy(&x->mark, &orig->mark, sizeof(x->mark)); memcpy(&x->props.smark, &orig->props.smark, sizeof(x->props.smark)); - if (xfrm_init_state(x) < 0) - goto error; - x->props.flags = orig->props.flags; x->props.extra_flags = orig->props.extra_flags; @@ -1595,6 +1592,7 @@ static struct xfrm_state *xfrm_state_clone(struct xfrm_state *orig, x->replay = orig->replay; x->preplay = orig->preplay; x->mapping_maxage = orig->mapping_maxage; + x->lastused = orig->lastused; x->new_mapping = 0; x->new_mapping_sport = 0; @@ -1606,7 +1604,8 @@ out: return NULL; } -struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net) +struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net, + u32 if_id) { unsigned int h; struct xfrm_state *x = NULL; @@ -1622,6 +1621,8 @@ struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *n continue; if (m->reqid && x->props.reqid != m->reqid) continue; + if (if_id != 0 && x->if_id != if_id) + continue; if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr, m->old_family) || !xfrm_addr_equal(&x->props.saddr, &m->old_saddr, @@ -1637,6 +1638,8 @@ struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *n if (x->props.mode != m->mode || x->id.proto != m->proto) continue; + if (if_id != 0 && x->if_id != if_id) + continue; if (!xfrm_addr_equal(&x->id.daddr, &m->old_daddr, m->old_family) || !xfrm_addr_equal(&x->props.saddr, &m->old_saddr, @@ -1663,6 +1666,11 @@ struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x, if (!xc) return NULL; + xc->props.family = m->new_family; + + if (xfrm_init_state(xc) < 0) + goto error; + memcpy(&xc->id.daddr, &m->new_daddr, sizeof(xc->id.daddr)); memcpy(&xc->props.saddr, &m->new_saddr, sizeof(xc->props.saddr)); @@ -2064,7 +2072,7 @@ int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high) } else { u32 spi = 0; for (h = 0; h < high-low+1; h++) { - spi = low + prandom_u32()%(high-low+1); + spi = low + prandom_u32_max(high - low + 1); x0 = xfrm_state_lookup(net, mark, &x->id.daddr, htonl(spi), x->id.proto, x->props.family); if (x0 == NULL) { newspi = htonl(spi); @@ -2474,22 +2482,20 @@ EXPORT_SYMBOL(xfrm_user_policy); static DEFINE_SPINLOCK(xfrm_km_lock); -int xfrm_register_km(struct xfrm_mgr *km) +void 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; } EXPORT_SYMBOL(xfrm_register_km); -int xfrm_unregister_km(struct xfrm_mgr *km) +void 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; } EXPORT_SYMBOL(xfrm_unregister_km); @@ -2572,7 +2578,7 @@ void xfrm_state_delete_tunnel(struct xfrm_state *x) } EXPORT_SYMBOL(xfrm_state_delete_tunnel); -u32 __xfrm_state_mtu(struct xfrm_state *x, int mtu) +u32 xfrm_state_mtu(struct xfrm_state *x, int mtu) { const struct xfrm_type *type = READ_ONCE(x->type); struct crypto_aead *aead; @@ -2603,19 +2609,10 @@ u32 __xfrm_state_mtu(struct xfrm_state *x, int mtu) return ((mtu - x->props.header_len - crypto_aead_authsize(aead) - net_adj) & ~(blksize - 1)) + net_adj - 2; } -EXPORT_SYMBOL_GPL(__xfrm_state_mtu); +EXPORT_SYMBOL_GPL(xfrm_state_mtu); -u32 xfrm_state_mtu(struct xfrm_state *x, int mtu) -{ - mtu = __xfrm_state_mtu(x, mtu); - - if (x->props.family == AF_INET6 && mtu < IPV6_MIN_MTU) - return IPV6_MIN_MTU; - - return mtu; -} - -int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload) +int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload, + struct netlink_ext_ack *extack) { const struct xfrm_mode *inner_mode; const struct xfrm_mode *outer_mode; @@ -2623,19 +2620,23 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload) int err; if (family == AF_INET && - xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc) + READ_ONCE(xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc)) x->props.flags |= XFRM_STATE_NOPMTUDISC; err = -EPROTONOSUPPORT; if (x->sel.family != AF_UNSPEC) { inner_mode = xfrm_get_mode(x->props.mode, x->sel.family); - if (inner_mode == NULL) + if (inner_mode == NULL) { + NL_SET_ERR_MSG(extack, "Requested mode not found"); goto error; + } if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL) && - family != x->sel.family) + family != x->sel.family) { + NL_SET_ERR_MSG(extack, "Only tunnel modes can accommodate a change of family"); goto error; + } x->inner_mode = *inner_mode; } else { @@ -2643,11 +2644,15 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload) int iafamily = AF_INET; inner_mode = xfrm_get_mode(x->props.mode, x->props.family); - if (inner_mode == NULL) + if (inner_mode == NULL) { + NL_SET_ERR_MSG(extack, "Requested mode not found"); goto error; + } - if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL)) + if (!(inner_mode->flags & XFRM_MODE_FLAG_TUNNEL)) { + NL_SET_ERR_MSG(extack, "Only tunnel modes can accommodate an AF_UNSPEC selector"); goto error; + } x->inner_mode = *inner_mode; @@ -2662,24 +2667,27 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload) } x->type = xfrm_get_type(x->id.proto, family); - if (x->type == NULL) + if (x->type == NULL) { + NL_SET_ERR_MSG(extack, "Requested type not found"); goto error; + } x->type_offload = xfrm_get_type_offload(x->id.proto, family, offload); - err = x->type->init_state(x); + err = x->type->init_state(x, extack); if (err) goto error; outer_mode = xfrm_get_mode(x->props.mode, family); if (!outer_mode) { + NL_SET_ERR_MSG(extack, "Requested mode not found"); err = -EPROTONOSUPPORT; goto error; } x->outer_mode = *outer_mode; if (init_replay) { - err = xfrm_init_replay(x); + err = xfrm_init_replay(x, extack); if (err) goto error; } @@ -2694,7 +2702,7 @@ int xfrm_init_state(struct xfrm_state *x) { int err; - err = __xfrm_init_state(x, true, false); + err = __xfrm_init_state(x, true, false, NULL); if (!err) x->km.state = XFRM_STATE_VALID; |