bridge: add template for bridge port flags
Provide macro to build sysfs data structures and functions for accessing flag bits. If flag bits change do netlink notification. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -34,6 +34,28 @@ const struct brport_attribute brport_attr_##_name = { \
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.store = _store, \
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};
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#define BRPORT_ATTR_FLAG(_name, _mask) \
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static ssize_t show_##_name(struct net_bridge_port *p, char *buf) \
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{ \
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return sprintf(buf, "%d\n", !!(p->flags & _mask)); \
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} \
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static int store_##_name(struct net_bridge_port *p, unsigned long v) \
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{ \
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unsigned long flags = p->flags; \
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if (v) \
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flags |= _mask; \
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else \
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flags &= ~_mask; \
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if (flags != p->flags) { \
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p->flags = flags; \
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br_ifinfo_notify(RTM_NEWLINK, p); \
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} \
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return 0; \
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} \
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static BRPORT_ATTR(_name, S_IRUGO | S_IWUSR, \
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show_##_name, store_##_name)
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static ssize_t show_path_cost(struct net_bridge_port *p, char *buf)
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{
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return sprintf(buf, "%d\n", p->path_cost);
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@ -133,21 +155,7 @@ static int store_flush(struct net_bridge_port *p, unsigned long v)
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}
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static BRPORT_ATTR(flush, S_IWUSR, NULL, store_flush);
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static ssize_t show_hairpin_mode(struct net_bridge_port *p, char *buf)
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{
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int hairpin_mode = (p->flags & BR_HAIRPIN_MODE) ? 1 : 0;
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return sprintf(buf, "%d\n", hairpin_mode);
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}
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static int store_hairpin_mode(struct net_bridge_port *p, unsigned long v)
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{
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if (v)
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p->flags |= BR_HAIRPIN_MODE;
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else
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p->flags &= ~BR_HAIRPIN_MODE;
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return 0;
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}
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static BRPORT_ATTR(hairpin_mode, S_IRUGO | S_IWUSR,
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show_hairpin_mode, store_hairpin_mode);
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BRPORT_ATTR_FLAG(hairpin_mode, BR_HAIRPIN_MODE);
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf)
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