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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2013-12-13 23:24:50 (GMT) |
|---|---|---|
| committer | Thomas Haller <thaller@redhat.com> | 2013-12-17 16:14:10 (GMT) |
| commit | d7aca17701519240bd69c0c6f7d55d0a09ce9346 (patch) | |
| tree | f8efcb317947f6d9b8477e9f36e53a87526581b1 | |
| parent | bc717a9bfcac70eead2d04e6978d136166294d34 (diff) | |
| download | libnl-d7aca17701519240bd69c0c6f7d55d0a09ce9346.zip libnl-d7aca17701519240bd69c0c6f7d55d0a09ce9346.tar.gz libnl-d7aca17701519240bd69c0c6f7d55d0a09ce9346.tar.bz2 | |
u32: add rtnl_u32_get_key()
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Thomas Haller <thaller@redhat.com>
| -rw-r--r-- | include/netlink/route/cls/u32.h | 2 | ||||
| -rw-r--r-- | lib/route/cls/u32.c | 36 |
2 files changed, 38 insertions, 0 deletions
diff --git a/include/netlink/route/cls/u32.h b/include/netlink/route/cls/u32.h index 34328d9..a74bfcd 100644 --- a/include/netlink/route/cls/u32.h +++ b/include/netlink/route/cls/u32.h @@ -32,6 +32,8 @@ extern int rtnl_u32_set_cls_terminal(struct rtnl_cls *); extern int rtnl_u32_set_flags(struct rtnl_cls *, int); extern int rtnl_u32_add_key(struct rtnl_cls *, uint32_t, uint32_t, int, int); +extern int rtnl_u32_get_key(struct rtnl_cls *, uint8_t, uint32_t *, uint32_t *, + int *, int *); extern int rtnl_u32_add_key_uint8(struct rtnl_cls *, uint8_t, uint8_t, int, int); extern int rtnl_u32_add_key_uint16(struct rtnl_cls *, uint16_t, uint16_t, diff --git a/lib/route/cls/u32.c b/lib/route/cls/u32.c index e79ec9b..567fab9 100644 --- a/lib/route/cls/u32.c +++ b/lib/route/cls/u32.c @@ -570,6 +570,42 @@ int rtnl_u32_add_key(struct rtnl_cls *cls, uint32_t val, uint32_t mask, return 0; } +/** + * Get the 32-bit key from the selector + * + * @arg cls classifier to be retrieve + * @arg index the index of the array of keys, start with 0 + * @arg val pointer to store value after masked (network byte-order) + * @arg mask pointer to store the mask (network byte-order) + * @arg off pointer to store the offset + * @arg offmask pointer to store offset mask + * +*/ +int rtnl_u32_get_key(struct rtnl_cls *cls, uint8_t index, + uint32_t *val, uint32_t *mask, int *off, int *offmask) +{ + struct tc_u32_sel *sel; + struct rtnl_u32 *u; + + if (!(u = rtnl_tc_data(TC_CAST(cls)))) + return -NLE_NOMEM; + + if (!(u->cu_mask & U32_ATTR_SELECTOR)) + return -NLE_INVAL; + + /* the selector might have been moved by realloc */ + sel = u32_selector(u); + if (index >= sel->nkeys) + return -NLE_RANGE; + + *mask = sel->keys[index].mask; + *val = sel->keys[index].val; + *off = sel->keys[index].off; + *offmask = sel->keys[index].offmask; + return 0; +} + + int rtnl_u32_add_key_uint8(struct rtnl_cls *cls, uint8_t val, uint8_t mask, int off, int offmask) { |