mir/ovs
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-08-30 22:05:19 +00:00
Code Issues Releases Wiki Activity

netlink: New macros for the sizes of Netlink attributes.

Browse Source 
I was feeling tempted in some code to just guess "hey, 32 bytes ought to
be big enough" and so on, but really it seems better to just have a
convenient way to measure.
This commit is contained in:
Ben Pfaff
2011-09-26 12:59:23 -07:00
parent 46d34fefc1
commit 3a706b33aa
1 changed files with 12 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/netlink.h
View File

@@ -90,6 +90,18 @@ void nl_msg_push_string(struct ofpbuf *, uint16_t type, const char *value);
/* Separating buffers into individual messages. */
struct nlmsghdr *nl_msg_next(struct ofpbuf *buffer, struct ofpbuf *msg);
/* Sizes of various attribute types, in bytes, including the attribute header
* and padding. */
#define NL_ATTR_SIZE(PAYLOAD_SIZE) (NLA_HDRLEN + NLA_ALIGN(PAYLOAD_SIZE))
#define NL_A_U8_SIZE NL_ATTR_SIZE(sizeof(uint8_t))
#define NL_A_U16_SIZE NL_ATTR_SIZE(sizeof(uint16_t))
#define NL_A_U32_SIZE NL_ATTR_SIZE(sizeof(uint32_t))
#define NL_A_U64_SIZE NL_ATTR_SIZE(sizeof(uint64_t))
#define NL_A_BE16_SIZE NL_ATTR_SIZE(sizeof(ovs_be16))
#define NL_A_BE32_SIZE NL_ATTR_SIZE(sizeof(ovs_be32))
#define NL_A_BE64_SIZE NL_ATTR_SIZE(sizeof(ovs_be64))
#define NL_A_FLAG_SIZE NL_ATTR_SIZE(0)
/* Netlink attribute types. */
enum nl_attr_type