libnl 1.1
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Netlink Attributes Construction/Parsing Interface. More...
Data Structures | |
struct | nla_policy |
attribute validation policy More... | |
Size Calculations | |
int | nla_attr_size (int payload) |
length of attribute not including padding | |
int | nla_total_size (int payload) |
total length of attribute including padding | |
int | nla_padlen (int payload) |
length of padding at the tail of the attribute | |
Payload Access | |
int | nla_type (const struct nlattr *nla) |
attribute type | |
void * | nla_data (const struct nlattr *nla) |
head of payload | |
int | nla_len (const struct nlattr *nla) |
length of payload | |
Attribute Parsing | |
int | nla_ok (const struct nlattr *nla, int remaining) |
check if the netlink attribute fits into the remaining bytes | |
struct nlattr * | nla_next (const struct nlattr *nla, int *remaining) |
next netlink attribte in attribute stream | |
int | nla_parse (struct nlattr *tb[], int maxtype, struct nlattr *head, int len, struct nla_policy *policy) |
Parse a stream of attributes into a tb buffer. | |
int | nla_parse_nested (struct nlattr *tb[], int maxtype, struct nlattr *nla, struct nla_policy *policy) |
parse nested attributes | |
int | nla_validate (struct nlattr *head, int len, int maxtype, struct nla_policy *policy) |
Validate a stream of attributes. | |
struct nlattr * | nla_find (struct nlattr *head, int len, int attrtype) |
Find a specific attribute in a stream of attributes. | |
Utilities | |
int | nla_memcpy (void *dest, struct nlattr *src, int count) |
Copy a netlink attribute into another memory area. | |
size_t | nla_strlcpy (char *dst, const struct nlattr *nla, size_t dstsize) |
Copy string attribute payload into a sized buffer. | |
int | nla_memcmp (const struct nlattr *nla, const void *data, size_t size) |
Compare an attribute with sized memory area. | |
int | nla_strcmp (const struct nlattr *nla, const char *str) |
Compare a string attribute against a string. | |
Attribute Construction | |
struct nlattr * | nla_reserve (struct nl_msg *n, int attrtype, int attrlen) |
reserve room for attribute on the skb | |
int | nla_put (struct nl_msg *n, int attrtype, int attrlen, const void *data) |
Add a netlink attribute to a netlink message. | |
int | nla_put_nested (struct nl_msg *n, int attrtype, struct nl_msg *nested) |
Add a nested netlink attribute to a netlink message. | |
int | nla_put_u8 (struct nl_msg *n, int attrtype, uint8_t value) |
Add a u16 netlink attribute to a netlink message. | |
int | nla_put_u16 (struct nl_msg *n, int attrtype, uint16_t value) |
Add a u16 netlink attribute to a netlink message. | |
int | nla_put_u32 (struct nl_msg *n, int attrtype, uint32_t value) |
Add a u32 netlink attribute to a netlink message. | |
int | nla_put_u64 (struct nl_msg *n, int attrtype, uint64_t value) |
Add a u64 netlink attribute to a netlink message. | |
int | nla_put_string (struct nl_msg *n, int attrtype, const char *str) |
Add a string netlink attribute to a netlink message. | |
int | nla_put_flag (struct nl_msg *n, int attrtype) |
Add a flag netlink attribute to a netlink message. | |
int | nla_put_msecs (struct nl_msg *n, int attrtype, unsigned long msecs) |
Add a msecs netlink attribute to a netlink message. | |
int | nla_put_data (struct nl_msg *n, int attrtype, struct nl_data *data) |
Add an abstract data netlink attribute to a netlink message. | |
int | nla_put_addr (struct nl_msg *n, int attrtype, struct nl_addr *addr) |
Add an abstract address netlink attribute to a netlink message. | |
Attribute Nesting | |
struct nlattr * | nla_nest_start (struct nl_msg *n, int attrtype) |
Start a new level of nested attributes. | |
int | nla_nest_end (struct nl_msg *n, struct nlattr *start) |
Finalize nesting of attributes. | |
Attribute Reading | |
uint32_t | nla_get_u32 (struct nlattr *nla) |
Return payload of u32 attribute. | |
uint16_t | nla_get_u16 (struct nlattr *nla) |
Return payload of u16 attribute. | |
uint8_t | nla_get_u8 (struct nlattr *nla) |
Return payload of u8 attribute. | |
uint64_t | nla_get_u64 (struct nlattr *nla) |
Return payload of u64 attribute. | |
char * | nla_get_string (struct nlattr *nla) |
return payload of string attribute | |
int | nla_get_flag (struct nlattr *nla) |
Return payload of flag attribute. | |
unsigned long | nla_get_msecs (struct nlattr *nla) |
Return payload of msecs attribute. | |
struct nl_addr * | nla_get_addr (struct nlattr *nla, int family) |
Return payload of address attribute. | |
struct nl_data * | nla_get_data (struct nlattr *nla) |
Return payload of abstract data attribute. | |
Validation Policy Types | |
enum | { NLA_UNSPEC, NLA_U8, NLA_U16, NLA_U32, NLA_U64, NLA_STRING, NLA_FLAG, NLA_MSECS, NLA_NESTED, __NLA_TYPE_MAX } |
Standard attribute types to specify validation policy. More... | |
#define | NLA_TYPE_MAX (__NLA_TYPE_MAX - 1) |
Maximum netlink validation policy type. | |
Attribute Construction (Exception Based) | |
All these functions jump to nla_put_failure in case of a failure instead of returning an error code. | |
#define | NLA_PUT(n, attrtype, attrlen, data) |
Add a netlink attribute to a netlink message. | |
#define | NLA_PUT_TYPE(n, type, attrtype, value) |
Add a basic netlink attribute to a netlink message. | |
#define | NLA_PUT_U8(n, attrtype, value) NLA_PUT_TYPE(n, uint8_t, attrtype, value) |
Add a u8 netlink attribute to a netlink message. | |
#define | NLA_PUT_U16(n, attrtype, value) NLA_PUT_TYPE(n, uint16_t, attrtype, value) |
Add a u16 netlink attribute to a netlink message. | |
#define | NLA_PUT_U32(n, attrtype, value) NLA_PUT_TYPE(n, uint32_t, attrtype, value) |
Add a u32 netlink attribute to a netlink message. | |
#define | NLA_PUT_U64(n, attrtype, value) NLA_PUT_TYPE(n, uint64_t, attrtype, value) |
Add a u64 netlink attribute to a netlink message. | |
#define | NLA_PUT_STRING(n, attrtype, value) NLA_PUT(n, attrtype, strlen(value) + 1, value) |
Add a character string netlink attribute to a netlink message. | |
#define | NLA_PUT_FLAG(n, attrtype) NLA_PUT(n, attrtype, 0, NULL) |
Add a flag netlink attribute to a netlink message. | |
#define | NLA_PUT_MSECS(n, attrtype, msecs) NLA_PUT_U64(n, attrtype, msecs) |
Add a msecs netlink attribute to a netlink message. | |
#define | NLA_PUT_ADDR(n, attrtype, addr) |
Add a address attribute to a netlink message. | |
Iterators | |
#define | nla_for_each_attr(pos, head, len, rem) |
iterate over a stream of attributes | |
#define | nla_for_each_nested(pos, nla, rem) |
iterate over a stream of nested attributes |
<------- nla_total_size(payload) -------> <---- nla_attr_size(payload) -----> +----------+- - -+- - - - - - - - - +- - -+-------- - - | Header | Pad | Payload | Pad | Header +----------+- - -+- - - - - - - - - +- - -+-------- - - <- nla_len(nla) -> ^ nla_data(nla)----^ | nla_next(nla)-----------------------------'
<------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)--> +---------------------+- - -+- - - - - - - - - -+- - -+ | Header | Pad | Payload | Pad | | (struct nlattr) | ing | | ing | +---------------------+- - -+- - - - - - - - - -+- - -+ <-------------- nlattr->nla_len -------------->
<-------------------- NLA_ALIGN(...) -------------------> +---------------+- - - - - - - - - - - - - - - - - -+- - -+ | |+---------+---------+- - -+-------+| | | TLV Header || TLV 1 | TLV 2 | | TLV n || Pad | | |+---------+---------+- - -+-------+| | +---------------+- - - - - - - - - - - - - - - - - -+- - -+ <--------- nla_data(nla) --------->
int param1 = 10; char *param2 = "parameter text"; struct nl_msg *msg = nlmsg_alloc(); nla_put_u32(msg, 1, param1); nla_put_string(msg, 2, param2); nl_send_auto_complete(handle, nl_msg_get(msg)); nlmsg_free(msg);
struct nl_msg * nested_config(void) { int a = 5, int b = 10; struct nl_msg *n = nlmsg_alloc(); nla_put_u32(n, 10, a); nla_put_u32(n, 20, b); return n; } ... struct nl_msg *m = nlmsg_alloc(); struct nl_msg *nest = nested_config(); nla_put_nested(m, 1, nest); nl_send_auto_complete(handle, nl_msg_get(m)); nlmsg_free(nest); nlmsg_free(m);
#define NLA_PUT | ( | n, | |
attrtype, | |||
attrlen, | |||
data | |||
) |
#define NLA_PUT_TYPE | ( | n, | |
type, | |||
attrtype, | |||
value | |||
) |
#define nla_for_each_attr | ( | pos, | |
head, | |||
len, | |||
rem | |||
) |
pos | loop counter, set to current attribute |
head | head of attribute stream |
len | length of attribute stream |
rem | initialized to len, holds bytes currently remaining in stream |
Definition at line 264 of file attr.h.
Referenced by nla_find(), nla_parse(), and nla_validate().
#define nla_for_each_nested | ( | pos, | |
nla, | |||
rem | |||
) |
pos | loop counter, set to current attribute |
nla | attribute containing the nested attributes |
rem | initialized to len, holds bytes currently remaining in stream |
#define NLA_PUT_U8 | ( | n, | |
attrtype, | |||
value | |||
) | NLA_PUT_TYPE(n, uint8_t, attrtype, value) |
n | netlink message |
attrtype | attribute type |
value | numeric value |
Definition at line 183 of file attr.h.
Referenced by rtnl_link_build_change_request().
#define NLA_PUT_U16 | ( | n, | |
attrtype, | |||
value | |||
) | NLA_PUT_TYPE(n, uint16_t, attrtype, value) |
#define NLA_PUT_U32 | ( | n, | |
attrtype, | |||
value | |||
) | NLA_PUT_TYPE(n, uint32_t, attrtype, value) |
n | netlink message |
attrtype | attribute type |
value | numeric value |
Definition at line 201 of file attr.h.
Referenced by rtnl_link_build_change_request().
#define NLA_PUT_U64 | ( | n, | |
attrtype, | |||
value | |||
) | NLA_PUT_TYPE(n, uint64_t, attrtype, value) |
#define NLA_PUT_STRING | ( | n, | |
attrtype, | |||
value | |||
) | NLA_PUT(n, attrtype, strlen(value) + 1, value) |
n | netlink message |
attrtype | attribute type |
value | character string |
Definition at line 219 of file attr.h.
Referenced by rtnl_link_build_change_request().
#define NLA_PUT_FLAG | ( | n, | |
attrtype | |||
) | NLA_PUT(n, attrtype, 0, NULL) |
#define NLA_PUT_MSECS | ( | n, | |
attrtype, | |||
msecs | |||
) | NLA_PUT_U64(n, attrtype, msecs) |
#define NLA_PUT_ADDR | ( | n, | |
attrtype, | |||
addr | |||
) |
NLA_PUT(n, attrtype, nl_addr_get_len(addr), \ nl_addr_get_binary_addr(addr))
n | netlink message |
attrtype | attribute type |
addr | abstract address object |
Definition at line 245 of file attr.h.
Referenced by rtnl_link_build_change_request().
anonymous enum |
Definition at line 35 of file attr.h.
{ NLA_UNSPEC, /**< Unspecified type */ NLA_U8, /**< 8bit integer */ NLA_U16, /**< 16bit integer */ NLA_U32, /**< 32bit integer */ NLA_U64, /**< 64bit integer */ NLA_STRING, /**< character string */ NLA_FLAG, /**< flag */ NLA_MSECS, /**< micro seconds (64bit) */ NLA_NESTED, /**< nested attributes */ __NLA_TYPE_MAX, };
int nla_attr_size | ( | int | payload | ) |
payload | length of payload |
Definition at line 108 of file attr.c.
Referenced by nla_padlen(), nla_reserve(), and nla_total_size().
{
return NLA_HDRLEN + payload;
}
int nla_total_size | ( | int | payload | ) |
payload | length of payload |
Definition at line 117 of file attr.c.
References nla_attr_size().
Referenced by nla_padlen(), and nla_reserve().
{ return NLA_ALIGN(nla_attr_size(payload)); }
int nla_padlen | ( | int | payload | ) |
payload | length of payload |
Definition at line 126 of file attr.c.
References nla_attr_size(), and nla_total_size().
Referenced by nla_reserve().
{ return nla_total_size(payload) - nla_attr_size(payload); }
int nla_type | ( | const struct nlattr * | nla | ) |
nla | netlink attribute |
Definition at line 142 of file attr.c.
Referenced by nla_find(), and nla_parse().
{
return nla->nla_type & NLA_TYPE_MASK;
}
void* nla_data | ( | const struct nlattr * | nla | ) |
nla | netlink attribute |
Definition at line 151 of file attr.c.
Referenced by nla_get_addr(), nla_get_data(), nla_get_string(), nla_get_u16(), nla_get_u32(), nla_get_u8(), nla_memcmp(), nla_memcpy(), nla_parse_nested(), nla_put(), nla_strcmp(), and nla_strlcpy().
{ return (char *) nla + NLA_HDRLEN; }
int nla_len | ( | const struct nlattr * | nla | ) |
nla | netlink attribute |
Definition at line 160 of file attr.c.
Referenced by nla_get_addr(), nla_get_data(), nla_memcmp(), nla_memcpy(), nla_parse_nested(), nla_strcmp(), and nla_strlcpy().
{
return nla->nla_len - NLA_HDRLEN;
}
int nla_ok | ( | const struct nlattr * | nla, |
int | remaining | ||
) |
struct nlattr* nla_next | ( | const struct nlattr * | nla, |
int * | remaining | ||
) | [read] |
nla | netlink attribute |
remaining | number of bytes remaining in attribute stream |
Definition at line 192 of file attr.c.
{ int totlen = NLA_ALIGN(nla->nla_len); *remaining -= totlen; return (struct nlattr *) ((char *) nla + totlen); }
int nla_parse | ( | struct nlattr * | tb[], |
int | maxtype, | ||
struct nlattr * | head, | ||
int | len, | ||
struct nla_policy * | policy | ||
) |
tb | destination array with maxtype+1 elements |
maxtype | maximum attribute type to be expected |
head | head of attribute stream |
len | length of attribute stream |
policy | validation policy |
Parses a stream of attributes and stores a pointer to each attribute in the tb array accessable via the attribute type. Attributes with a type exceeding maxtype will be silently ignored for backwards compatibility reasons. policy may be set to NULL if no validation is required.
Definition at line 262 of file attr.c.
References nla_for_each_attr, and nla_type().
Referenced by nla_parse_nested(), and nlmsg_parse().
{ struct nlattr *nla; int rem, err; memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1)); nla_for_each_attr(nla, head, len, rem) { int type = nla_type(nla); if (type == 0) { fprintf(stderr, "Illegal nla->nla_type == 0\n"); continue; } if (type <= maxtype) { if (policy) { err = validate_nla(nla, maxtype, policy); if (err < 0) goto errout; } tb[type] = nla; } } if (rem > 0) fprintf(stderr, "netlink: %d bytes leftover after parsing " "attributes.\n", rem); err = 0; errout: return err; }
int nla_parse_nested | ( | struct nlattr * | tb[], |
int | maxtype, | ||
struct nlattr * | nla, | ||
struct nla_policy * | policy | ||
) |
tb | destination array with maxtype+1 elements |
maxtype | maximum attribute type to be expected |
nla | attribute containing the nested attributes |
policy | validation policy |
Definition at line 308 of file attr.c.
References nla_data(), nla_len(), and nla_parse().
int nla_validate | ( | struct nlattr * | head, |
int | len, | ||
int | maxtype, | ||
struct nla_policy * | policy | ||
) |
head | head of attribute stream |
len | length of attribute stream |
maxtype | maximum attribute type to be expected |
policy | validation policy |
Validates all attributes in the specified attribute stream against the specified policy. Attributes with a type exceeding maxtype will be ignored. See documenation of struct nla_policy for more details.
Definition at line 328 of file attr.c.
References nla_for_each_attr.
Referenced by nlmsg_validate().
{ struct nlattr *nla; int rem, err; nla_for_each_attr(nla, head, len, rem) { err = validate_nla(nla, maxtype, policy); if (err < 0) goto errout; } err = 0; errout: return err; }
struct nlattr* nla_find | ( | struct nlattr * | head, |
int | len, | ||
int | attrtype | ||
) | [read] |
head | head of attribute stream |
len | length of attribute stream |
attrtype | type of attribute to look for |
Definition at line 353 of file attr.c.
References nla_for_each_attr, and nla_type().
Referenced by nlmsg_find_attr().
{ struct nlattr *nla; int rem; nla_for_each_attr(nla, head, len, rem) if (nla_type(nla) == attrtype) return nla; return NULL; }
int nla_memcpy | ( | void * | dest, |
struct nlattr * | src, | ||
int | count | ||
) |
dest | where to copy to memcpy |
src | netlink attribute to copy from |
count | size of the destination area |
Note: The number of bytes copied is limited by the length of attribute's payload. memcpy
Definition at line 383 of file attr.c.
References nla_data(), and nla_len().
Referenced by nla_get_u64().
size_t nla_strlcpy | ( | char * | dst, |
const struct nlattr * | nla, | ||
size_t | dstsize | ||
) |
dst | where to copy the string to |
nla | attribute to copy the string from |
dstsize | size of destination buffer |
Copies at most dstsize - 1 bytes into the destination buffer. The result is always a valid NUL-terminated string. Unlike strlcpy the destination buffer is always padded out.
Definition at line 408 of file attr.c.
References nla_data(), and nla_len().
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 nl_msg * | n, |
int | attrtype, | ||
int | attrlen | ||
) | [read] |
n | netlink message |
attrtype | attribute type |
attrlen | length of attribute payload |
Adds a netlink attribute header to a netlink message and reserves room for the payload but does not copy it.
Definition at line 475 of file attr.c.
References nla_attr_size(), nla_padlen(), nla_total_size(), and nlmsg_data().
Referenced by nla_put().
{ struct nlattr *nla; int tlen; tlen = NLMSG_ALIGN(n->nm_nlh->nlmsg_len) + nla_total_size(attrlen); if ((tlen + n->nm_nlh->nlmsg_len) > n->nm_size) { nl_errno(ENOBUFS); return NULL; } nla = (struct nlattr *) nlmsg_tail(n->nm_nlh); nla->nla_type = attrtype; nla->nla_len = nla_attr_size(attrlen); memset((unsigned char *) nla + nla->nla_len, 0, nla_padlen(attrlen)); n->nm_nlh->nlmsg_len = tlen; NL_DBG(2, "msg %p: Reserved %d bytes at offset +%td for attr %d " "nlmsg_len=%d\n", n, attrlen, (void *) nla - nlmsg_data(n->nm_nlh), attrtype, n->nm_nlh->nlmsg_len); return nla; }
int nla_put | ( | struct nl_msg * | n, |
int | attrtype, | ||
int | attrlen, | ||
const void * | data | ||
) |
n | netlink message |
attrtype | attribute type |
attrlen | length of attribute payload |
data | head of attribute payload |
Definition at line 512 of file attr.c.
References nla_data(), nla_reserve(), and nlmsg_data().
Referenced by nla_nest_start(), nla_put_addr(), nla_put_data(), nla_put_flag(), nla_put_nested(), nla_put_string(), nla_put_u16(), nla_put_u32(), nla_put_u64(), and nla_put_u8().
{ struct nlattr *nla; nla = nla_reserve(n, attrtype, attrlen); if (!nla) return nl_errno(ENOMEM); memcpy(nla_data(nla), data, attrlen); NL_DBG(2, "msg %p: Wrote %d bytes at offset +%td for attr %d\n", n, attrlen, (void *) nla - nlmsg_data(n->nm_nlh), attrtype); return 0; }
int nla_put_nested | ( | struct nl_msg * | n, |
int | attrtype, | ||
struct nl_msg * | nested | ||
) |
n | netlink message |
attrtype | attribute type |
nested | netlink attribute to nest |
Definition at line 536 of file attr.c.
References nla_put(), nlmsg_data(), and nlmsg_len().
Referenced by rtnl_neightbl_build_change_request().
{ return nla_put(n, attrtype, nlmsg_len(nested->nm_nlh), nlmsg_data(nested->nm_nlh)); }
int nla_put_u8 | ( | struct nl_msg * | n, |
int | attrtype, | ||
uint8_t | value | ||
) |
int nla_put_u16 | ( | struct nl_msg * | n, |
int | attrtype, | ||
uint16_t | value | ||
) |
int nla_put_u32 | ( | struct nl_msg * | n, |
int | attrtype, | ||
uint32_t | value | ||
) |
n | netlink message |
attrtype | attribute type |
value | numeric value |
Definition at line 570 of file attr.c.
References nla_put().
Referenced by rtnl_neightbl_build_change_request().
{ return nla_put(n, attrtype, sizeof(uint32_t), &value); }
int nla_put_u64 | ( | struct nl_msg * | n, |
int | attrtype, | ||
uint64_t | value | ||
) |
n | netlink message |
attrtype | attribute type |
value | numeric value |
Definition at line 581 of file attr.c.
References nla_put().
Referenced by nla_put_msecs(), and rtnl_neightbl_build_change_request().
{ return nla_put(n, attrtype, sizeof(uint64_t), &value); }
int nla_put_string | ( | struct nl_msg * | n, |
int | attrtype, | ||
const char * | str | ||
) |
n | netlink message |
attrtype | attribute type |
str | NUL terminated string |
Definition at line 592 of file attr.c.
References nla_put().
Referenced by rtnl_neightbl_build_change_request().
{ return nla_put(n, attrtype, strlen(str) + 1, str); }
int nla_put_flag | ( | struct nl_msg * | n, |
int | attrtype | ||
) |
int nla_put_msecs | ( | struct nl_msg * | n, |
int | attrtype, | ||
unsigned long | msecs | ||
) |
n | netlink message |
attrtype | attribute type |
msecs | number of msecs |
Definition at line 613 of file attr.c.
References nla_put_u64().
{ return nla_put_u64(n, attrtype, msecs); }
int nla_put_data | ( | struct nl_msg * | n, |
int | attrtype, | ||
struct nl_data * | data | ||
) |
n | netlink message |
attrtype | attribute type |
data | abstract data |
Definition at line 624 of file attr.c.
References nl_data_get(), nl_data_get_size(), and nla_put().
{ return nla_put(n, attrtype, nl_data_get_size(data), nl_data_get(data)); }
int nla_put_addr | ( | struct nl_msg * | n, |
int | attrtype, | ||
struct nl_addr * | addr | ||
) |
n | netlink message |
attrtype | attribute type |
addr | abstract address |
Definition at line 636 of file attr.c.
References nl_addr_get_binary_addr(), nl_addr_get_len(), and nla_put().
{ return nla_put(n, attrtype, nl_addr_get_len(addr), nl_addr_get_binary_addr(addr)); }
struct nlattr* nla_nest_start | ( | struct nl_msg * | n, |
int | attrtype | ||
) | [read] |
n | netlink message |
attrtype | attribute type of container |
Definition at line 656 of file attr.c.
References nla_put().
Referenced by rtnl_link_build_change_request().
{ struct nlattr *start = (struct nlattr *) nlmsg_tail(n->nm_nlh); if (nla_put(n, attrtype, 0, NULL) < 0) return NULL; return start; }
int nla_nest_end | ( | struct nl_msg * | n, |
struct nlattr * | start | ||
) |
n | netlink message |
start | container attribute |
Corrects the container attribute header to include the all appeneded attributes.
Definition at line 676 of file attr.c.
Referenced by rtnl_link_build_change_request().
{ start->nla_len = (unsigned char *) nlmsg_tail(n->nm_nlh) - (unsigned char *) start; return 0; }
uint32_t nla_get_u32 | ( | struct nlattr * | nla | ) |
nla | u32 netlink attribute |
Definition at line 694 of file attr.c.
References nla_data().
{ return *(uint32_t *) nla_data(nla); }
uint16_t nla_get_u16 | ( | struct nlattr * | nla | ) |
nla | u16 netlink attribute |
Definition at line 703 of file attr.c.
References nla_data().
{ return *(uint16_t *) nla_data(nla); }
uint8_t nla_get_u8 | ( | struct nlattr * | nla | ) |
nla | u8 netlink attribute |
Definition at line 712 of file attr.c.
References nla_data().
{ return *(uint8_t *) nla_data(nla); }
uint64_t nla_get_u64 | ( | struct nlattr * | nla | ) |
nla | u64 netlink attribute |
Definition at line 721 of file attr.c.
References nla_memcpy().
Referenced by nla_get_msecs().
{ uint64_t tmp; nla_memcpy(&tmp, nla, sizeof(tmp)); return tmp; }
char* nla_get_string | ( | struct nlattr * | nla | ) |
nla | string netlink attribute |
Definition at line 734 of file attr.c.
References nla_data().
{ return (char *) nla_data(nla); }
int nla_get_flag | ( | struct nlattr * | nla | ) |
unsigned long nla_get_msecs | ( | struct nlattr * | nla | ) |
nla | msecs netlink attribute |
Definition at line 754 of file attr.c.
References nla_get_u64().
{ return nla_get_u64(nla); }
struct nl_addr* nla_get_addr | ( | struct nlattr * | nla, |
int | family | ||
) | [read] |
nla | address netlink attribute |
family | address family |
Definition at line 766 of file attr.c.
References nl_addr_build(), nla_data(), and nla_len().
{ return nl_addr_build(family, nla_data(nla), nla_len(nla)); }
struct nl_data* nla_get_data | ( | struct nlattr * | nla | ) | [read] |
nla | abstract data netlink attribute |
Definition at line 777 of file attr.c.
References nl_data_alloc(), nla_data(), and nla_len().
{ return nl_data_alloc(nla_data(nla), nla_len(nla)); }