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link: add carrier support

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Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
This commit is contained in:
Flavio Leitner 2013-01-07 18:36:12 -02:00 • committed by Thomas Graf
parent f123795434
commit 3540e44b15
5 changed files with 73 additions and 1 deletions
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6
include/linux/if.h
View file

@ -117,6 +117,12 @@ enum {
IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */
};
/* carrier state */
enum {
IF_CARRIER_DOWN,
IF_CARRIER_UP
};
/*
* Device mapping structure. I'd just gone off and designed a
* beautiful scheme using only loadable modules with arguments

1
include/linux/if_link.h
View file

@ -142,6 +142,7 @@ enum {
#define IFLA_PROMISCUITY IFLA_PROMISCUITY
IFLA_NUM_TX_QUEUES,
IFLA_NUM_RX_QUEUES,
IFLA_CARRIER,
__IFLA_MAX
};

1
include/netlink-types.h
View file

@ -182,6 +182,7 @@ struct rtnl_link
uint32_t l_num_tx_queues;
uint32_t l_num_rx_queues;
uint32_t l_group;
uint8_t l_carrier;
};
struct rtnl_ncacheinfo

7
include/netlink/route/link.h
View file

@ -141,6 +141,10 @@ extern int rtnl_link_str2operstate(const char *);
extern char * rtnl_link_mode2str(uint8_t, char *, size_t);
extern int rtnl_link_str2mode(const char *);
/* Carrier State Translations */
extern char * rtnl_link_carrier2str(uint8_t, char *, size_t);
extern int rtnl_link_str2carrier(const char *);
/* Access Functions */
extern void rtnl_link_set_qdisc(struct rtnl_link *, const char *);
extern char * rtnl_link_get_qdisc(struct rtnl_link *);
@ -182,6 +186,9 @@ extern int rtnl_link_get_link(struct rtnl_link *);
extern void rtnl_link_set_master(struct rtnl_link *, int);
extern int rtnl_link_get_master(struct rtnl_link *);
extern void rtnl_link_set_carrier(struct rtnl_link *, uint8_t);
extern uint8_t rtnl_link_get_carrier(struct rtnl_link *);
extern void rtnl_link_set_operstate(struct rtnl_link *, uint8_t);
extern uint8_t rtnl_link_get_operstate(struct rtnl_link *);

59
lib/route/link.c
View file

@ -54,6 +54,7 @@
#define LINK_ATTR_NUM_TX_QUEUES (1 << 22)
#define LINK_ATTR_NUM_RX_QUEUES (1 << 23)
#define LINK_ATTR_GROUP (1 << 24)
#define LINK_ATTR_CARRIER (1 << 25)
static struct nl_cache_ops rtnl_link_ops;
static struct nl_object_ops link_obj_ops;
@ -263,6 +264,7 @@ static struct nla_policy link_policy[IFLA_MAX+1] = {
[IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
[IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
[IFLA_GROUP] = { .type = NLA_U32 },
[IFLA_CARRIER] = { .type = NLA_U8 },
};
static struct nla_policy link_info_policy[IFLA_INFO_MAX+1] = {
@ -456,6 +458,11 @@ static int link_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who,
link->ce_mask |= LINK_ATTR_MASTER;
}
if (tb[IFLA_CARRIER]) {
link->l_carrier = nla_get_u8(tb[IFLA_CARRIER]);
link->ce_mask |= LINK_ATTR_CARRIER;
}
if (tb[IFLA_OPERSTATE]) {
link->l_operstate = nla_get_u8(tb[IFLA_OPERSTATE]);
link->ce_mask |= LINK_ATTR_OPERSTATE;
@ -667,9 +674,14 @@ static void link_dump_details(struct nl_object *obj, struct nl_dump_params *p)
if (link->ce_mask & LINK_ATTR_NUM_VF)
nl_dump(p, "num-vf %u ", link->l_num_vf);
nl_dump(p, "mode %s\n",
nl_dump(p, "mode %s ",
rtnl_link_mode2str(link->l_linkmode, buf, sizeof(buf)));
nl_dump(p, "carrier %s",
rtnl_link_carrier2str(link->l_carrier, buf, sizeof(buf)));
nl_dump(p, "\n");
if (link->l_info_ops && link->l_info_ops->io_dump[NL_DUMP_DETAILS])
link->l_info_ops->io_dump[NL_DUMP_DETAILS](link, p);
@ -875,6 +887,7 @@ static const struct trans_tbl link_attrs[] = {
__ADD(LINK_ATTR_NUM_TX_QUEUES, num_tx_queues)
__ADD(LINK_ATTR_NUM_RX_QUEUES, num_rx_queues)
__ADD(LINK_ATTR_GROUP, group)
__ADD(LINK_ATTR_CARRIER, carrier)
};
static char *link_attrs2str(int attrs, char *buf, size_t len)
@ -1176,6 +1189,9 @@ static int build_link_msg(int cmd, struct ifinfomsg *hdr,
if (link->ce_mask & LINK_ATTR_OPERSTATE)
NLA_PUT_U8(msg, IFLA_OPERSTATE, link->l_operstate);
if (link->ce_mask & LINK_ATTR_CARRIER)
NLA_PUT_U8(msg, IFLA_CARRIER, link->l_carrier);
if (link->ce_mask & LINK_ATTR_LINKMODE)
NLA_PUT_U8(msg, IFLA_LINKMODE, link->l_linkmode);
@ -1865,6 +1881,31 @@ int rtnl_link_get_master(struct rtnl_link *link)
return link->l_master;
}
/**
* Set carrier of link object
* @arg link Link object
* @arg status New carrier status
*
* @see rtnl_link_get_carrier()
*/
void rtnl_link_set_carrier(struct rtnl_link *link, uint8_t status)
{
link->l_carrier = status;
link->ce_mask |= LINK_ATTR_CARRIER;
}
/**
* Return carrier status of link object
* @arg link Link object
*
* @see rtnl_link_set_master()
* @return Carrier state.
*/
uint8_t rtnl_link_get_carrier(struct rtnl_link *link)
{
return link->l_carrier;
}
/**
* Set operational status of link object
* @arg link Link object
@ -2450,6 +2491,11 @@ static const struct trans_tbl link_modes[] = {
__ADD(IF_LINK_MODE_DORMANT, dormant)
};
static const struct trans_tbl carrier_states[] = {
__ADD(IF_CARRIER_DOWN, down)
__ADD(IF_CARRIER_UP, up)
};
char *rtnl_link_mode2str(uint8_t st, char *buf, size_t len)
{
return __type2str(st, buf, len, link_modes, ARRAY_SIZE(link_modes));
@ -2460,6 +2506,17 @@ int rtnl_link_str2mode(const char *name)
return __str2type(name, link_modes, ARRAY_SIZE(link_modes));
}
char *rtnl_link_carrier2str(uint8_t st, char *buf, size_t len)
{
return __type2str(st, buf, len, carrier_states,
ARRAY_SIZE(carrier_states));
}
int rtnl_link_str2carrier(const char *name)
{
return __str2type(name, carrier_states, ARRAY_SIZE(carrier_states));
}
/** @} */
/**