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-rw-r--r--include/net/netlink.h389
1 files changed, 235 insertions, 154 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h
index cb1f3504687..2b47eaadba8 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -98,24 +98,14 @@
* nla_put_u16(skb, type, value) add u16 attribute to skb
* nla_put_u32(skb, type, value) add u32 attribute to skb
* nla_put_u64(skb, type, value) add u64 attribute to skb
+ * nla_put_s8(skb, type, value) add s8 attribute to skb
+ * nla_put_s16(skb, type, value) add s16 attribute to skb
+ * nla_put_s32(skb, type, value) add s32 attribute to skb
+ * nla_put_s64(skb, type, value) add s64 attribute to skb
* nla_put_string(skb, type, str) add string attribute to skb
* nla_put_flag(skb, type) add flag attribute to skb
* nla_put_msecs(skb, type, jiffies) add msecs attribute to skb
*
- * Exceptions Based Attribute Construction:
- * NLA_PUT(skb, type, len, data) add attribute to skb
- * NLA_PUT_U8(skb, type, value) add u8 attribute to skb
- * NLA_PUT_U16(skb, type, value) add u16 attribute to skb
- * NLA_PUT_U32(skb, type, value) add u32 attribute to skb
- * NLA_PUT_U64(skb, type, value) add u64 attribute to skb
- * NLA_PUT_STRING(skb, type, str) add string attribute to skb
- * NLA_PUT_FLAG(skb, type) add flag attribute to skb
- * NLA_PUT_MSECS(skb, type, jiffies) add msecs attribute to skb
- *
- * The meaning of these functions is equal to their lower case
- * variants but they jump to the label nla_put_failure in case
- * of a failure.
- *
* Nested Attributes Construction:
* nla_nest_start(skb, type) start a nested attribute
* nla_nest_end(skb, nla) finalize a nested attribute
@@ -135,6 +125,10 @@
* nla_get_u16(nla) get payload for a u16 attribute
* nla_get_u32(nla) get payload for a u32 attribute
* nla_get_u64(nla) get payload for a u64 attribute
+ * nla_get_s8(nla) get payload for a s8 attribute
+ * nla_get_s16(nla) get payload for a s16 attribute
+ * nla_get_s32(nla) get payload for a s32 attribute
+ * nla_get_s64(nla) get payload for a s64 attribute
* nla_get_flag(nla) return 1 if flag is true
* nla_get_msecs(nla) get payload for a msecs attribute
*
@@ -174,6 +168,10 @@ enum {
NLA_NESTED_COMPAT,
NLA_NUL_STRING,
NLA_BINARY,
+ NLA_S8,
+ NLA_S16,
+ NLA_S32,
+ NLA_S64,
__NLA_TYPE_MAX,
};
@@ -197,6 +195,8 @@ enum {
* NLA_NESTED_COMPAT Minimum length of structure payload
* NLA_U8, NLA_U16,
* NLA_U32, NLA_U64,
+ * NLA_S8, NLA_S16,
+ * NLA_S32, NLA_S64,
* NLA_MSECS Leaving the length field zero will verify the
* given type fits, using it verifies minimum length
* just like "All other"
@@ -217,52 +217,39 @@ struct nla_policy {
/**
* struct nl_info - netlink source information
* @nlh: Netlink message header of original request
- * @pid: Netlink PID of requesting application
+ * @portid: Netlink PORTID of requesting application
*/
struct nl_info {
struct nlmsghdr *nlh;
struct net *nl_net;
- u32 pid;
+ u32 portid;
};
-extern int netlink_rcv_skb(struct sk_buff *skb,
- int (*cb)(struct sk_buff *,
- struct nlmsghdr *));
-extern int nlmsg_notify(struct sock *sk, struct sk_buff *skb,
- u32 pid, unsigned int group, int report,
- gfp_t flags);
-
-extern int nla_validate(const struct nlattr *head,
- int len, int maxtype,
- const struct nla_policy *policy);
-extern int nla_parse(struct nlattr **tb, int maxtype,
- const struct nlattr *head, int len,
- const struct nla_policy *policy);
-extern int nla_policy_len(const struct nla_policy *, int);
-extern struct nlattr * nla_find(const struct nlattr *head,
- int len, int attrtype);
-extern size_t nla_strlcpy(char *dst, const struct nlattr *nla,
- size_t dstsize);
-extern int nla_memcpy(void *dest, const struct nlattr *src, int count);
-extern int nla_memcmp(const struct nlattr *nla, const void *data,
- size_t size);
-extern int nla_strcmp(const struct nlattr *nla, const char *str);
-extern struct nlattr * __nla_reserve(struct sk_buff *skb, int attrtype,
- int attrlen);
-extern void * __nla_reserve_nohdr(struct sk_buff *skb, int attrlen);
-extern struct nlattr * nla_reserve(struct sk_buff *skb, int attrtype,
- int attrlen);
-extern void * nla_reserve_nohdr(struct sk_buff *skb, int attrlen);
-extern void __nla_put(struct sk_buff *skb, int attrtype,
- int attrlen, const void *data);
-extern void __nla_put_nohdr(struct sk_buff *skb, int attrlen,
- const void *data);
-extern int nla_put(struct sk_buff *skb, int attrtype,
- int attrlen, const void *data);
-extern int nla_put_nohdr(struct sk_buff *skb, int attrlen,
- const void *data);
-extern int nla_append(struct sk_buff *skb, int attrlen,
- const void *data);
+int netlink_rcv_skb(struct sk_buff *skb,
+ int (*cb)(struct sk_buff *, struct nlmsghdr *));
+int nlmsg_notify(struct sock *sk, struct sk_buff *skb, u32 portid,
+ unsigned int group, int report, gfp_t flags);
+
+int nla_validate(const struct nlattr *head, int len, int maxtype,
+ const struct nla_policy *policy);
+int nla_parse(struct nlattr **tb, int maxtype, const struct nlattr *head,
+ int len, const struct nla_policy *policy);
+int nla_policy_len(const struct nla_policy *, int);
+struct nlattr *nla_find(const struct nlattr *head, int len, int attrtype);
+size_t nla_strlcpy(char *dst, const struct nlattr *nla, size_t dstsize);
+int nla_memcpy(void *dest, const struct nlattr *src, int count);
+int nla_memcmp(const struct nlattr *nla, const void *data, size_t size);
+int nla_strcmp(const struct nlattr *nla, const char *str);
+struct nlattr *__nla_reserve(struct sk_buff *skb, int attrtype, int attrlen);
+void *__nla_reserve_nohdr(struct sk_buff *skb, int attrlen);
+struct nlattr *nla_reserve(struct sk_buff *skb, int attrtype, int attrlen);
+void *nla_reserve_nohdr(struct sk_buff *skb, int attrlen);
+void __nla_put(struct sk_buff *skb, int attrtype, int attrlen,
+ const void *data);
+void __nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data);
+int nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
+int nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data);
+int nla_append(struct sk_buff *skb, int attrlen, const void *data);
/**************************************************************************
* Netlink Messages
@@ -441,45 +428,10 @@ static inline int nlmsg_report(const struct nlmsghdr *nlh)
nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \
nlmsg_attrlen(nlh, hdrlen), rem)
-#if 0
-/* FIXME: Enable once all users have been converted */
-
-/**
- * __nlmsg_put - Add a new netlink message to an skb
- * @skb: socket buffer to store message in
- * @pid: netlink process id
- * @seq: sequence number of message
- * @type: message type
- * @payload: length of message payload
- * @flags: message flags
- *
- * The caller is responsible to ensure that the skb provides enough
- * tailroom for both the netlink header and payload.
- */
-static inline struct nlmsghdr *__nlmsg_put(struct sk_buff *skb, u32 pid,
- u32 seq, int type, int payload,
- int flags)
-{
- struct nlmsghdr *nlh;
-
- nlh = (struct nlmsghdr *) skb_put(skb, nlmsg_total_size(payload));
- nlh->nlmsg_type = type;
- nlh->nlmsg_len = nlmsg_msg_size(payload);
- nlh->nlmsg_flags = flags;
- nlh->nlmsg_pid = pid;
- nlh->nlmsg_seq = seq;
-
- memset((unsigned char *) nlmsg_data(nlh) + payload, 0,
- nlmsg_padlen(payload));
-
- return nlh;
-}
-#endif
-
/**
* nlmsg_put - Add a new netlink message to an skb
* @skb: socket buffer to store message in
- * @pid: netlink process id
+ * @portid: netlink process id
* @seq: sequence number of message
* @type: message type
* @payload: length of message payload
@@ -488,13 +440,13 @@ static inline struct nlmsghdr *__nlmsg_put(struct sk_buff *skb, u32 pid,
* Returns NULL if the tailroom of the skb is insufficient to store
* the message header and payload.
*/
-static inline struct nlmsghdr *nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,
+static inline struct nlmsghdr *nlmsg_put(struct sk_buff *skb, u32 portid, u32 seq,
int type, int payload, int flags)
{
if (unlikely(skb_tailroom(skb) < nlmsg_total_size(payload)))
return NULL;
- return __nlmsg_put(skb, pid, seq, type, payload, flags);
+ return __nlmsg_put(skb, portid, seq, type, payload, flags);
}
/**
@@ -513,7 +465,7 @@ static inline struct nlmsghdr *nlmsg_put_answer(struct sk_buff *skb,
int type, int payload,
int flags)
{
- return nlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
+ return nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
type, payload, flags);
}
@@ -598,18 +550,18 @@ static inline void nlmsg_free(struct sk_buff *skb)
* nlmsg_multicast - multicast a netlink message
* @sk: netlink socket to spread messages to
* @skb: netlink message as socket buffer
- * @pid: own netlink pid to avoid sending to yourself
+ * @portid: own netlink portid to avoid sending to yourself
* @group: multicast group id
* @flags: allocation flags
*/
static inline int nlmsg_multicast(struct sock *sk, struct sk_buff *skb,
- u32 pid, unsigned int group, gfp_t flags)
+ u32 portid, unsigned int group, gfp_t flags)
{
int err;
NETLINK_CB(skb).dst_group = group;
- err = netlink_broadcast(sk, skb, pid, group, flags);
+ err = netlink_broadcast(sk, skb, portid, group, flags);
if (err > 0)
err = 0;
@@ -620,13 +572,13 @@ static inline int nlmsg_multicast(struct sock *sk, struct sk_buff *skb,
* nlmsg_unicast - unicast a netlink message
* @sk: netlink socket to spread message to
* @skb: netlink message as socket buffer
- * @pid: netlink pid of the destination socket
+ * @portid: netlink portid of the destination socket
*/
-static inline int nlmsg_unicast(struct sock *sk, struct sk_buff *skb, u32 pid)
+static inline int nlmsg_unicast(struct sock *sk, struct sk_buff *skb, u32 portid)
{
int err;
- err = netlink_unicast(sk, skb, pid, MSG_DONTWAIT);
+ err = netlink_unicast(sk, skb, portid, MSG_DONTWAIT);
if (err > 0)
err = 0;
@@ -807,6 +759,39 @@ static inline int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value)
}
/**
+ * nla_put_be16 - Add a __be16 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_be16(struct sk_buff *skb, int attrtype, __be16 value)
+{
+ return nla_put(skb, attrtype, sizeof(__be16), &value);
+}
+
+/**
+ * nla_put_net16 - Add 16-bit network byte order netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_net16(struct sk_buff *skb, int attrtype, __be16 value)
+{
+ return nla_put_be16(skb, attrtype | NLA_F_NET_BYTEORDER, value);
+}
+
+/**
+ * nla_put_le16 - Add a __le16 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_le16(struct sk_buff *skb, int attrtype, __le16 value)
+{
+ return nla_put(skb, attrtype, sizeof(__le16), &value);
+}
+
+/**
* nla_put_u32 - Add a u32 netlink attribute to a socket buffer
* @skb: socket buffer to add attribute to
* @attrtype: attribute type
@@ -818,7 +803,40 @@ static inline int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value)
}
/**
- * nla_put_64 - Add a u64 netlink attribute to a socket buffer
+ * nla_put_be32 - Add a __be32 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_be32(struct sk_buff *skb, int attrtype, __be32 value)
+{
+ return nla_put(skb, attrtype, sizeof(__be32), &value);
+}
+
+/**
+ * nla_put_net32 - Add 32-bit network byte order netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_net32(struct sk_buff *skb, int attrtype, __be32 value)
+{
+ return nla_put_be32(skb, attrtype | NLA_F_NET_BYTEORDER, value);
+}
+
+/**
+ * nla_put_le32 - Add a __le32 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_le32(struct sk_buff *skb, int attrtype, __le32 value)
+{
+ return nla_put(skb, attrtype, sizeof(__le32), &value);
+}
+
+/**
+ * nla_put_u64 - Add a u64 netlink attribute to a socket buffer
* @skb: socket buffer to add attribute to
* @attrtype: attribute type
* @value: numeric value
@@ -829,6 +847,83 @@ static inline int nla_put_u64(struct sk_buff *skb, int attrtype, u64 value)
}
/**
+ * nla_put_be64 - Add a __be64 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_be64(struct sk_buff *skb, int attrtype, __be64 value)
+{
+ return nla_put(skb, attrtype, sizeof(__be64), &value);
+}
+
+/**
+ * nla_put_net64 - Add 64-bit network byte order netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_net64(struct sk_buff *skb, int attrtype, __be64 value)
+{
+ return nla_put_be64(skb, attrtype | NLA_F_NET_BYTEORDER, value);
+}
+
+/**
+ * nla_put_le64 - Add a __le64 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_le64(struct sk_buff *skb, int attrtype, __le64 value)
+{
+ return nla_put(skb, attrtype, sizeof(__le64), &value);
+}
+
+/**
+ * nla_put_s8 - Add a s8 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s8(struct sk_buff *skb, int attrtype, s8 value)
+{
+ return nla_put(skb, attrtype, sizeof(s8), &value);
+}
+
+/**
+ * nla_put_s16 - Add a s16 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s16(struct sk_buff *skb, int attrtype, s16 value)
+{
+ return nla_put(skb, attrtype, sizeof(s16), &value);
+}
+
+/**
+ * nla_put_s32 - Add a s32 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s32(struct sk_buff *skb, int attrtype, s32 value)
+{
+ return nla_put(skb, attrtype, sizeof(s32), &value);
+}
+
+/**
+ * nla_put_s64 - Add a s64 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_s64(struct sk_buff *skb, int attrtype, s64 value)
+{
+ return nla_put(skb, attrtype, sizeof(s64), &value);
+}
+
+/**
* nla_put_string - Add a string netlink attribute to a socket buffer
* @skb: socket buffer to add attribute to
* @attrtype: attribute type
@@ -863,60 +958,6 @@ static inline int nla_put_msecs(struct sk_buff *skb, int attrtype,
return nla_put(skb, attrtype, sizeof(u64), &tmp);
}
-#define NLA_PUT(skb, attrtype, attrlen, data) \
- do { \
- if (unlikely(nla_put(skb, attrtype, attrlen, data) < 0)) \
- goto nla_put_failure; \
- } while(0)
-
-#define NLA_PUT_TYPE(skb, type, attrtype, value) \
- do { \
- type __tmp = value; \
- NLA_PUT(skb, attrtype, sizeof(type), &__tmp); \
- } while(0)
-
-#define NLA_PUT_U8(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, u8, attrtype, value)
-
-#define NLA_PUT_U16(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, u16, attrtype, value)
-
-#define NLA_PUT_LE16(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, __le16, attrtype, value)
-
-#define NLA_PUT_BE16(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, __be16, attrtype, value)
-
-#define NLA_PUT_NET16(skb, attrtype, value) \
- NLA_PUT_BE16(skb, attrtype | NLA_F_NET_BYTEORDER, value)
-
-#define NLA_PUT_U32(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, u32, attrtype, value)
-
-#define NLA_PUT_BE32(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, __be32, attrtype, value)
-
-#define NLA_PUT_NET32(skb, attrtype, value) \
- NLA_PUT_BE32(skb, attrtype | NLA_F_NET_BYTEORDER, value)
-
-#define NLA_PUT_U64(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, u64, attrtype, value)
-
-#define NLA_PUT_BE64(skb, attrtype, value) \
- NLA_PUT_TYPE(skb, __be64, attrtype, value)
-
-#define NLA_PUT_NET64(skb, attrtype, value) \
- NLA_PUT_BE64(skb, attrtype | NLA_F_NET_BYTEORDER, value)
-
-#define NLA_PUT_STRING(skb, attrtype, value) \
- NLA_PUT(skb, attrtype, strlen(value) + 1, value)
-
-#define NLA_PUT_FLAG(skb, attrtype) \
- NLA_PUT(skb, attrtype, 0, NULL)
-
-#define NLA_PUT_MSECS(skb, attrtype, jiffies) \
- NLA_PUT_U64(skb, attrtype, jiffies_to_msecs(jiffies))
-
/**
* nla_get_u32 - return payload of u32 attribute
* @nla: u32 netlink attribute
@@ -998,6 +1039,46 @@ static inline __be64 nla_get_be64(const struct nlattr *nla)
}
/**
+ * nla_get_s32 - return payload of s32 attribute
+ * @nla: s32 netlink attribute
+ */
+static inline s32 nla_get_s32(const struct nlattr *nla)
+{
+ return *(s32 *) nla_data(nla);
+}
+
+/**
+ * nla_get_s16 - return payload of s16 attribute
+ * @nla: s16 netlink attribute
+ */
+static inline s16 nla_get_s16(const struct nlattr *nla)
+{
+ return *(s16 *) nla_data(nla);
+}
+
+/**
+ * nla_get_s8 - return payload of s8 attribute
+ * @nla: s8 netlink attribute
+ */
+static inline s8 nla_get_s8(const struct nlattr *nla)
+{
+ return *(s8 *) nla_data(nla);
+}
+
+/**
+ * nla_get_s64 - return payload of s64 attribute
+ * @nla: s64 netlink attribute
+ */
+static inline s64 nla_get_s64(const struct nlattr *nla)
+{
+ s64 tmp;
+
+ nla_memcpy(&tmp, nla, sizeof(tmp));
+
+ return tmp;
+}
+
+/**
* nla_get_flag - return payload of flag attribute
* @nla: flag netlink attribute
*/
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 12:08:58 +0000