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Diffstat (limited to 'net/sctp/socket.c')
-rw-r--r--net/sctp/socket.c92
1 files changed, 83 insertions, 9 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index a60d1f8b41c..9e65758cb03 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -110,7 +110,6 @@ static int sctp_do_bind(struct sock *, union sctp_addr *, int);
static int sctp_autobind(struct sock *sk);
static void sctp_sock_migrate(struct sock *, struct sock *,
struct sctp_association *, sctp_socket_type_t);
-static char *sctp_hmac_alg = SCTP_COOKIE_HMAC_ALG;
extern struct kmem_cache *sctp_bucket_cachep;
extern long sysctl_sctp_mem[3];
@@ -336,6 +335,7 @@ static struct sctp_af *sctp_sockaddr_af(struct sctp_sock *opt,
/* Bind a local address either to an endpoint or to an association. */
SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
{
+ struct net *net = sock_net(sk);
struct sctp_sock *sp = sctp_sk(sk);
struct sctp_endpoint *ep = sp->ep;
struct sctp_bind_addr *bp = &ep->base.bind_addr;
@@ -379,7 +379,8 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
}
}
- if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
+ if (snum && snum < PROT_SOCK &&
+ !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE))
return -EACCES;
/* See if the address matches any of the addresses we may have
@@ -610,6 +611,7 @@ static int sctp_send_asconf_add_ip(struct sock *sk,
2*asoc->pathmtu, 4380));
trans->ssthresh = asoc->peer.i.a_rwnd;
trans->rto = asoc->rto_initial;
+ sctp_max_rto(asoc, trans);
trans->rtt = trans->srtt = trans->rttvar = 0;
sctp_transport_route(trans, NULL,
sctp_sk(asoc->base.sk));
@@ -1162,7 +1164,7 @@ static int __sctp_connect(struct sock* sk,
* be permitted to open new associations.
*/
if (ep->base.bind_addr.port < PROT_SOCK &&
- !capable(CAP_NET_BIND_SERVICE)) {
+ !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) {
err = -EACCES;
goto out_free;
}
@@ -1791,7 +1793,7 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
* associations.
*/
if (ep->base.bind_addr.port < PROT_SOCK &&
- !capable(CAP_NET_BIND_SERVICE)) {
+ !ns_capable(net->user_ns, CAP_NET_BIND_SERVICE)) {
err = -EACCES;
goto out_unlock;
}
@@ -1915,8 +1917,8 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
/* Break the message into multiple chunks of maximum size. */
datamsg = sctp_datamsg_from_user(asoc, sinfo, msg, msg_len);
- if (!datamsg) {
- err = -ENOMEM;
+ if (IS_ERR(datamsg)) {
+ err = PTR_ERR(datamsg);
goto out_free;
}
@@ -3890,6 +3892,8 @@ SCTP_STATIC int sctp_init_sock(struct sock *sk)
sp->default_rcv_context = 0;
sp->max_burst = net->sctp.max_burst;
+ sp->sctp_hmac_alg = net->sctp.sctp_hmac_alg;
+
/* Initialize default setup parameters. These parameters
* can be modified with the SCTP_INITMSG socket option or
* overridden by the SCTP_INIT CMSG.
@@ -5632,6 +5636,71 @@ static int sctp_getsockopt_paddr_thresholds(struct sock *sk,
return 0;
}
+/*
+ * SCTP_GET_ASSOC_STATS
+ *
+ * This option retrieves local per endpoint statistics. It is modeled
+ * after OpenSolaris' implementation
+ */
+static int sctp_getsockopt_assoc_stats(struct sock *sk, int len,
+ char __user *optval,
+ int __user *optlen)
+{
+ struct sctp_assoc_stats sas;
+ struct sctp_association *asoc = NULL;
+
+ /* User must provide at least the assoc id */
+ if (len < sizeof(sctp_assoc_t))
+ return -EINVAL;
+
+ if (copy_from_user(&sas, optval, len))
+ return -EFAULT;
+
+ asoc = sctp_id2assoc(sk, sas.sas_assoc_id);
+ if (!asoc)
+ return -EINVAL;
+
+ sas.sas_rtxchunks = asoc->stats.rtxchunks;
+ sas.sas_gapcnt = asoc->stats.gapcnt;
+ sas.sas_outofseqtsns = asoc->stats.outofseqtsns;
+ sas.sas_osacks = asoc->stats.osacks;
+ sas.sas_isacks = asoc->stats.isacks;
+ sas.sas_octrlchunks = asoc->stats.octrlchunks;
+ sas.sas_ictrlchunks = asoc->stats.ictrlchunks;
+ sas.sas_oodchunks = asoc->stats.oodchunks;
+ sas.sas_iodchunks = asoc->stats.iodchunks;
+ sas.sas_ouodchunks = asoc->stats.ouodchunks;
+ sas.sas_iuodchunks = asoc->stats.iuodchunks;
+ sas.sas_idupchunks = asoc->stats.idupchunks;
+ sas.sas_opackets = asoc->stats.opackets;
+ sas.sas_ipackets = asoc->stats.ipackets;
+
+ /* New high max rto observed, will return 0 if not a single
+ * RTO update took place. obs_rto_ipaddr will be bogus
+ * in such a case
+ */
+ sas.sas_maxrto = asoc->stats.max_obs_rto;
+ memcpy(&sas.sas_obs_rto_ipaddr, &asoc->stats.obs_rto_ipaddr,
+ sizeof(struct sockaddr_storage));
+
+ /* Mark beginning of a new observation period */
+ asoc->stats.max_obs_rto = asoc->rto_min;
+
+ /* Allow the struct to grow and fill in as much as possible */
+ len = min_t(size_t, len, sizeof(sas));
+
+ if (put_user(len, optlen))
+ return -EFAULT;
+
+ SCTP_DEBUG_PRINTK("sctp_getsockopt_assoc_stat(%d): %d\n",
+ len, sas.sas_assoc_id);
+
+ if (copy_to_user(optval, &sas, len))
+ return -EFAULT;
+
+ return 0;
+}
+
SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
@@ -5773,6 +5842,9 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname,
case SCTP_PEER_ADDR_THLDS:
retval = sctp_getsockopt_paddr_thresholds(sk, optval, len, optlen);
break;
+ case SCTP_GET_ASSOC_STATS:
+ retval = sctp_getsockopt_assoc_stats(sk, len, optval, optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;
@@ -5981,13 +6053,15 @@ SCTP_STATIC int sctp_listen_start(struct sock *sk, int backlog)
struct sctp_sock *sp = sctp_sk(sk);
struct sctp_endpoint *ep = sp->ep;
struct crypto_hash *tfm = NULL;
+ char alg[32];
/* Allocate HMAC for generating cookie. */
- if (!sctp_sk(sk)->hmac && sctp_hmac_alg) {
- tfm = crypto_alloc_hash(sctp_hmac_alg, 0, CRYPTO_ALG_ASYNC);
+ if (!sp->hmac && sp->sctp_hmac_alg) {
+ sprintf(alg, "hmac(%s)", sp->sctp_hmac_alg);
+ tfm = crypto_alloc_hash(alg, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
net_info_ratelimited("failed to load transform for %s: %ld\n",
- sctp_hmac_alg, PTR_ERR(tfm));
+ sp->sctp_hmac_alg, PTR_ERR(tfm));
return -ENOSYS;
}
sctp_sk(sk)->hmac = tfm;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-30 05:46:04 +0000