And so for me for SCTP :D -Kiran */
-static const char *sctp_conntrack_names[] = {
+static const char *const sctp_conntrack_names[] = {
"NONE",
"CLOSED",
"COOKIE_WAIT",
}
};
-static int sctp_pkt_to_tuple(const struct sk_buff *skb,
- unsigned int dataoff,
- struct nf_conntrack_tuple *tuple)
+static bool sctp_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
+ struct nf_conntrack_tuple *tuple)
{
- sctp_sctphdr_t _hdr, *hp;
+ const struct sctphdr *hp;
+ struct sctphdr _hdr;
/* Actually only need first 8 bytes. */
hp = skb_header_pointer(skb, dataoff, 8, &_hdr);
if (hp == NULL)
- return 0;
+ return false;
tuple->src.u.sctp.port = hp->source;
tuple->dst.u.sctp.port = hp->dest;
- return 1;
+ return true;
}
-static int sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
- const struct nf_conntrack_tuple *orig)
+static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
+ const struct nf_conntrack_tuple *orig)
{
tuple->src.u.sctp.port = orig->dst.u.sctp.port;
tuple->dst.u.sctp.port = orig->src.u.sctp.port;
- return 1;
+ return true;
}
/* Print out the per-protocol part of the tuple. */
{
enum sctp_conntrack new_state, old_state;
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
- sctp_sctphdr_t _sctph, *sh;
- sctp_chunkhdr_t _sch, *sch;
+ const struct sctphdr *sh;
+ struct sctphdr _sctph;
+ const struct sctp_chunkhdr *sch;
+ struct sctp_chunkhdr _sch;
u_int32_t offset, count;
unsigned long map[256 / sizeof(unsigned long)] = { 0 };
}
/* Called when a new connection for this protocol found. */
-static int sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
- unsigned int dataoff)
+static bool sctp_new(struct nf_conn *ct, const struct sk_buff *skb,
+ unsigned int dataoff)
{
enum sctp_conntrack new_state;
- sctp_sctphdr_t _sctph, *sh;
- sctp_chunkhdr_t _sch, *sch;
+ const struct sctphdr *sh;
+ struct sctphdr _sctph;
+ const struct sctp_chunkhdr *sch;
+ struct sctp_chunkhdr _sch;
u_int32_t offset, count;
unsigned long map[256 / sizeof(unsigned long)] = { 0 };
sh = skb_header_pointer(skb, dataoff, sizeof(_sctph), &_sctph);
if (sh == NULL)
- return 0;
+ return false;
if (do_basic_checks(ct, skb, dataoff, map) != 0)
- return 0;
+ return false;
/* If an OOTB packet has any of these chunks discard (Sec 8.4) */
if (test_bit(SCTP_CID_ABORT, map) ||
test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) ||
test_bit(SCTP_CID_COOKIE_ACK, map))
- return 0;
+ return false;
new_state = SCTP_CONNTRACK_MAX;
for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
if (new_state == SCTP_CONNTRACK_NONE ||
new_state == SCTP_CONNTRACK_MAX) {
pr_debug("nf_conntrack_sctp: invalid new deleting.\n");
- return 0;
+ return false;
}
/* Copy the vtag into the state info */
ih = skb_header_pointer(skb, offset + sizeof(sctp_chunkhdr_t),
sizeof(_inithdr), &_inithdr);
if (ih == NULL)
- return 0;
+ return false;
pr_debug("Setting vtag %x for new conn\n",
ih->init_tag);
ih->init_tag;
} else {
/* Sec 8.5.1 (A) */
- return 0;
+ return false;
}
}
/* If it is a shutdown ack OOTB packet, we expect a return
ct->proto.sctp.state = new_state;
}
- return 1;
+ return true;
}
+#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
+
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netfilter/nfnetlink_conntrack.h>
+
+static int sctp_to_nlattr(struct sk_buff *skb, struct nlattr *nla,
+ const struct nf_conn *ct)
+{
+ struct nlattr *nest_parms;
+
+ read_lock_bh(&sctp_lock);
+ nest_parms = nla_nest_start(skb, CTA_PROTOINFO_SCTP | NLA_F_NESTED);
+ if (!nest_parms)
+ goto nla_put_failure;
+
+ NLA_PUT_U8(skb, CTA_PROTOINFO_SCTP_STATE, ct->proto.sctp.state);
+
+ NLA_PUT_BE32(skb,
+ CTA_PROTOINFO_SCTP_VTAG_ORIGINAL,
+ ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL]);
+
+ NLA_PUT_BE32(skb,
+ CTA_PROTOINFO_SCTP_VTAG_REPLY,
+ ct->proto.sctp.vtag[IP_CT_DIR_REPLY]);
+
+ read_unlock_bh(&sctp_lock);
+
+ nla_nest_end(skb, nest_parms);
+
+ return 0;
+
+nla_put_failure:
+ read_unlock_bh(&sctp_lock);
+ return -1;
+}
+
+static const struct nla_policy sctp_nla_policy[CTA_PROTOINFO_SCTP_MAX+1] = {
+ [CTA_PROTOINFO_SCTP_STATE] = { .type = NLA_U8 },
+ [CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] = { .type = NLA_U32 },
+ [CTA_PROTOINFO_SCTP_VTAG_REPLY] = { .type = NLA_U32 },
+};
+
+static int nlattr_to_sctp(struct nlattr *cda[], struct nf_conn *ct)
+{
+ struct nlattr *attr = cda[CTA_PROTOINFO_SCTP];
+ struct nlattr *tb[CTA_PROTOINFO_SCTP_MAX+1];
+ int err;
+
+ /* updates may not contain the internal protocol info, skip parsing */
+ if (!attr)
+ return 0;
+
+ err = nla_parse_nested(tb,
+ CTA_PROTOINFO_SCTP_MAX,
+ attr,
+ sctp_nla_policy);
+ if (err < 0)
+ return err;
+
+ if (!tb[CTA_PROTOINFO_SCTP_STATE] ||
+ !tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] ||
+ !tb[CTA_PROTOINFO_SCTP_VTAG_REPLY])
+ return -EINVAL;
+
+ write_lock_bh(&sctp_lock);
+ ct->proto.sctp.state = nla_get_u8(tb[CTA_PROTOINFO_SCTP_STATE]);
+ ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] =
+ nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL]);
+ ct->proto.sctp.vtag[IP_CT_DIR_REPLY] =
+ nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_REPLY]);
+ write_unlock_bh(&sctp_lock);
+
+ return 0;
+}
+#endif
+
#ifdef CONFIG_SYSCTL
static unsigned int sctp_sysctl_table_users;
static struct ctl_table_header *sctp_sysctl_header;
.new = sctp_new,
.me = THIS_MODULE,
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
+ .to_nlattr = sctp_to_nlattr,
+ .from_nlattr = nlattr_to_sctp,
.tuple_to_nlattr = nf_ct_port_tuple_to_nlattr,
.nlattr_to_tuple = nf_ct_port_nlattr_to_tuple,
.nla_policy = nf_ct_port_nla_policy,
.new = sctp_new,
.me = THIS_MODULE,
#if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE)
+ .to_nlattr = sctp_to_nlattr,
+ .from_nlattr = nlattr_to_sctp,
.tuple_to_nlattr = nf_ct_port_tuple_to_nlattr,
.nlattr_to_tuple = nf_ct_port_nlattr_to_tuple,
.nla_policy = nf_ct_port_nla_policy,
projects / linux-2.6-omap-h63xx.git / blobdiff