From fc34acd36eecdec95171b98ef2516e3d4daa5c41 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Tue, 25 Nov 2008 17:50:08 -0800 Subject: [PATCH] netns xfrm: xfrm_user module in netns Grab netns either from netlink socket, state or policy. SA and SPD flush are in init_net for now, this requires little attention, see below. Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller --- net/xfrm/xfrm_user.c | 76 ++++++++++++++++++++++++++------------------ 1 file changed, 45 insertions(+), 31 deletions(-) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 8b5b01dfb77a..ab8b138e5e2f 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -316,11 +316,12 @@ static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs) x->replay_maxdiff = nla_get_u32(rt); } -static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p, +static struct xfrm_state *xfrm_state_construct(struct net *net, + struct xfrm_usersa_info *p, struct nlattr **attrs, int *errp) { - struct xfrm_state *x = xfrm_state_alloc(&init_net); + struct xfrm_state *x = xfrm_state_alloc(net); int err = -ENOMEM; if (!x) @@ -391,6 +392,7 @@ error_no_put: static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct xfrm_usersa_info *p = nlmsg_data(nlh); struct xfrm_state *x; int err; @@ -403,7 +405,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh, if (err) return err; - x = xfrm_state_construct(p, attrs, &err); + x = xfrm_state_construct(net, p, attrs, &err); if (!x) return err; @@ -431,7 +433,8 @@ out: return err; } -static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p, +static struct xfrm_state *xfrm_user_state_lookup(struct net *net, + struct xfrm_usersa_id *p, struct nlattr **attrs, int *errp) { @@ -440,7 +443,7 @@ static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p, if (xfrm_id_proto_match(p->proto, IPSEC_PROTO_ANY)) { err = -ESRCH; - x = xfrm_state_lookup(&init_net, &p->daddr, p->spi, p->proto, p->family); + x = xfrm_state_lookup(net, &p->daddr, p->spi, p->proto, p->family); } else { xfrm_address_t *saddr = NULL; @@ -451,7 +454,7 @@ static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p, } err = -ESRCH; - x = xfrm_state_lookup_byaddr(&init_net, &p->daddr, saddr, + x = xfrm_state_lookup_byaddr(net, &p->daddr, saddr, p->proto, p->family); } @@ -464,6 +467,7 @@ static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p, static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct xfrm_state *x; int err = -ESRCH; struct km_event c; @@ -472,7 +476,7 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh, u32 sessionid = NETLINK_CB(skb).sessionid; u32 sid = NETLINK_CB(skb).sid; - x = xfrm_user_state_lookup(p, attrs, &err); + x = xfrm_user_state_lookup(net, p, attrs, &err); if (x == NULL) return err; @@ -615,6 +619,7 @@ static int xfrm_dump_sa_done(struct netlink_callback *cb) static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb) { + struct net *net = sock_net(skb->sk); struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1]; struct xfrm_dump_info info; @@ -631,7 +636,7 @@ static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb) xfrm_state_walk_init(walk, 0); } - (void) xfrm_state_walk(&init_net, walk, dump_one_state, &info); + (void) xfrm_state_walk(net, walk, dump_one_state, &info); return skb->len; } @@ -776,13 +781,13 @@ static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh, static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { - struct net *net = &init_net; + struct net *net = sock_net(skb->sk); struct xfrm_usersa_id *p = nlmsg_data(nlh); struct xfrm_state *x; struct sk_buff *resp_skb; int err = -ESRCH; - x = xfrm_user_state_lookup(p, attrs, &err); + x = xfrm_user_state_lookup(net, p, attrs, &err); if (x == NULL) goto out_noput; @@ -823,7 +828,7 @@ static int verify_userspi_info(struct xfrm_userspi_info *p) static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { - struct net *net = &init_net; + struct net *net = sock_net(skb->sk); struct xfrm_state *x; struct xfrm_userspi_info *p; struct sk_buff *resp_skb; @@ -1082,9 +1087,9 @@ static void copy_to_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_i p->share = XFRM_SHARE_ANY; /* XXX xp->share */ } -static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp) +static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp) { - struct xfrm_policy *xp = xfrm_policy_alloc(&init_net, GFP_KERNEL); + struct xfrm_policy *xp = xfrm_policy_alloc(net, GFP_KERNEL); int err; if (!xp) { @@ -1114,6 +1119,7 @@ static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p, static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct xfrm_userpolicy_info *p = nlmsg_data(nlh); struct xfrm_policy *xp; struct km_event c; @@ -1130,7 +1136,7 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh, if (err) return err; - xp = xfrm_policy_construct(p, attrs, &err); + xp = xfrm_policy_construct(net, p, attrs, &err); if (!xp) return err; @@ -1267,6 +1273,7 @@ static int xfrm_dump_policy_done(struct netlink_callback *cb) static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb) { + struct net *net = sock_net(skb->sk); struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1]; struct xfrm_dump_info info; @@ -1283,7 +1290,7 @@ static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb) xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY); } - (void) xfrm_policy_walk(&init_net, walk, dump_one_policy, &info); + (void) xfrm_policy_walk(net, walk, dump_one_policy, &info); return skb->len; } @@ -1315,7 +1322,7 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb, static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { - struct net *net = &init_net; + struct net *net = sock_net(skb->sk); struct xfrm_policy *xp; struct xfrm_userpolicy_id *p; u8 type = XFRM_POLICY_TYPE_MAIN; @@ -1395,6 +1402,7 @@ out: static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct km_event c; struct xfrm_usersa_flush *p = nlmsg_data(nlh); struct xfrm_audit audit_info; @@ -1403,7 +1411,7 @@ static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh, audit_info.loginuid = NETLINK_CB(skb).loginuid; audit_info.sessionid = NETLINK_CB(skb).sessionid; audit_info.secid = NETLINK_CB(skb).sid; - err = xfrm_state_flush(&init_net, p->proto, &audit_info); + err = xfrm_state_flush(net, p->proto, &audit_info); if (err) return err; c.data.proto = p->proto; @@ -1462,7 +1470,7 @@ nla_put_failure: static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { - struct net *net = &init_net; + struct net *net = sock_net(skb->sk); struct xfrm_state *x; struct sk_buff *r_skb; int err; @@ -1501,6 +1509,7 @@ static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh, static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct xfrm_state *x; struct km_event c; int err = - EINVAL; @@ -1515,7 +1524,7 @@ static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh, if (!(nlh->nlmsg_flags&NLM_F_REPLACE)) return err; - x = xfrm_state_lookup(&init_net, &p->sa_id.daddr, p->sa_id.spi, p->sa_id.proto, p->sa_id.family); + x = xfrm_state_lookup(net, &p->sa_id.daddr, p->sa_id.spi, p->sa_id.proto, p->sa_id.family); if (x == NULL) return -ESRCH; @@ -1540,6 +1549,7 @@ out: static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct km_event c; u8 type = XFRM_POLICY_TYPE_MAIN; int err; @@ -1552,7 +1562,7 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh, audit_info.loginuid = NETLINK_CB(skb).loginuid; audit_info.sessionid = NETLINK_CB(skb).sessionid; audit_info.secid = NETLINK_CB(skb).sid; - err = xfrm_policy_flush(&init_net, type, &audit_info); + err = xfrm_policy_flush(net, type, &audit_info); if (err) return err; c.data.type = type; @@ -1566,6 +1576,7 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh, static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct xfrm_policy *xp; struct xfrm_user_polexpire *up = nlmsg_data(nlh); struct xfrm_userpolicy_info *p = &up->pol; @@ -1577,7 +1588,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh, return err; if (p->index) - xp = xfrm_policy_byid(&init_net, type, p->dir, p->index, 0, &err); + xp = xfrm_policy_byid(net, type, p->dir, p->index, 0, &err); else { struct nlattr *rt = attrs[XFRMA_SEC_CTX]; struct xfrm_sec_ctx *ctx; @@ -1594,7 +1605,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh, if (err) return err; } - xp = xfrm_policy_bysel_ctx(&init_net, type, p->dir, &p->sel, ctx, 0, &err); + xp = xfrm_policy_bysel_ctx(net, type, p->dir, &p->sel, ctx, 0, &err); security_xfrm_policy_free(ctx); } if (xp == NULL) @@ -1629,12 +1640,13 @@ out: static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct xfrm_state *x; int err; struct xfrm_user_expire *ue = nlmsg_data(nlh); struct xfrm_usersa_info *p = &ue->state; - x = xfrm_state_lookup(&init_net, &p->id.daddr, p->id.spi, p->id.proto, p->family); + x = xfrm_state_lookup(net, &p->id.daddr, p->id.spi, p->id.proto, p->family); err = -ENOENT; if (x == NULL) @@ -1663,13 +1675,14 @@ out: static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh, struct nlattr **attrs) { + struct net *net = sock_net(skb->sk); struct xfrm_policy *xp; struct xfrm_user_tmpl *ut; int i; struct nlattr *rt = attrs[XFRMA_TMPL]; struct xfrm_user_acquire *ua = nlmsg_data(nlh); - struct xfrm_state *x = xfrm_state_alloc(&init_net); + struct xfrm_state *x = xfrm_state_alloc(net); int err = -ENOMEM; if (!x) @@ -1683,7 +1696,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh, } /* build an XP */ - xp = xfrm_policy_construct(&ua->policy, attrs, &err); + xp = xfrm_policy_construct(net, &ua->policy, attrs, &err); if (!xp) { kfree(x); return err; @@ -2041,7 +2054,7 @@ static int build_expire(struct sk_buff *skb, struct xfrm_state *x, struct km_eve static int xfrm_exp_state_notify(struct xfrm_state *x, struct km_event *c) { - struct net *net = &init_net; + struct net *net = xs_net(x); struct sk_buff *skb; skb = nlmsg_new(xfrm_expire_msgsize(), GFP_ATOMIC); @@ -2056,7 +2069,7 @@ static int xfrm_exp_state_notify(struct xfrm_state *x, struct km_event *c) static int xfrm_aevent_state_notify(struct xfrm_state *x, struct km_event *c) { - struct net *net = &init_net; + struct net *net = xs_net(x); struct sk_buff *skb; skb = nlmsg_new(xfrm_aevent_msgsize(), GFP_ATOMIC); @@ -2122,7 +2135,7 @@ static inline size_t xfrm_sa_len(struct xfrm_state *x) static int xfrm_notify_sa(struct xfrm_state *x, struct km_event *c) { - struct net *net = &init_net; + struct net *net = xs_net(x); struct xfrm_usersa_info *p; struct xfrm_usersa_id *id; struct nlmsghdr *nlh; @@ -2266,6 +2279,7 @@ static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt, static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt, u8 *data, int len, int *dir) { + struct net *net = sock_net(sk); struct xfrm_userpolicy_info *p = (struct xfrm_userpolicy_info *)data; struct xfrm_user_tmpl *ut = (struct xfrm_user_tmpl *) (p + 1); struct xfrm_policy *xp; @@ -2304,7 +2318,7 @@ static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt, if (p->dir > XFRM_POLICY_OUT) return NULL; - xp = xfrm_policy_alloc(&init_net, GFP_KERNEL); + xp = xfrm_policy_alloc(net, GFP_KERNEL); if (xp == NULL) { *dir = -ENOBUFS; return NULL; @@ -2357,7 +2371,7 @@ nlmsg_failure: static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c) { - struct net *net = &init_net; + struct net *net = xp_net(xp); struct sk_buff *skb; skb = nlmsg_new(xfrm_polexpire_msgsize(xp), GFP_ATOMIC); @@ -2372,7 +2386,7 @@ static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_eve static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c) { - struct net *net = &init_net; + struct net *net = xp_net(xp); struct xfrm_userpolicy_info *p; struct xfrm_userpolicy_id *id; struct nlmsghdr *nlh; -- 2.39.5