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bonding: guard ns_targets by CONFIG_IPV6 

Guard ns_targets in struct bond_params by CONFIG_IPV6, which could save
256 bytes if IPv6 not configed. Also add this protection for function
bond_is_ip6_target_ok() and bond_get_targets_ip6().

Remove the IS_ENABLED() check for bond_opts[] as this will make
BOND_OPT_NS_TARGETS uninitialized if CONFIG_IPV6 not enabled. Add
a dummy bond_option_ns_ip6_targets_set() for this situation.

Fixes: 4e24be018e ("bonding: add new parameter ns_targets")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Jonathan Toppins <jtoppins@redhat.com>
Link: https://lore.kernel.org/r/20220531063727.224043-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Hangbin Liu 2022-05-31 14:37:27 +08:00 committed by Paolo Abeni
parent 0a375c8224
commit c4caa500ff
3 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/bonding/bond_main.c
View File

@ -6159,7 +6159,9 @@ static int bond_check_params(struct bond_params *params)
strscpy_pad(params->primary, primary, sizeof(params->primary));
memcpy(params->arp_targets, arp_target, sizeof(arp_target));
#if IS_ENABLED(CONFIG_IPV6)
memset(params->ns_targets, 0, sizeof(struct in6_addr) * BOND_MAX_NS_TARGETS);
#endif
return 0;
}

10
drivers/net/bonding/bond_options.c
View File

@ -34,10 +34,8 @@ static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
static int bond_option_arp_ip_targets_set(struct bonding *bond,
const struct bond_opt_value *newval);
#if IS_ENABLED(CONFIG_IPV6)
static int bond_option_ns_ip6_targets_set(struct bonding *bond,
const struct bond_opt_value *newval);
#endif
static int bond_option_arp_validate_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_arp_all_targets_set(struct bonding *bond,
@ -299,7 +297,6 @@ static const struct bond_option bond_opts[BOND_OPT_LAST] = {
.flags = BOND_OPTFLAG_RAWVAL,
.set = bond_option_arp_ip_targets_set
},
#if IS_ENABLED(CONFIG_IPV6)
[BOND_OPT_NS_TARGETS] = {
.id = BOND_OPT_NS_TARGETS,
.name = "ns_ip6_target",
@ -307,7 +304,6 @@ static const struct bond_option bond_opts[BOND_OPT_LAST] = {
.flags = BOND_OPTFLAG_RAWVAL,
.set = bond_option_ns_ip6_targets_set
},
#endif
[BOND_OPT_DOWNDELAY] = {
.id = BOND_OPT_DOWNDELAY,
.name = "downdelay",
@ -1254,6 +1250,12 @@ static int bond_option_ns_ip6_targets_set(struct bonding *bond,
return 0;
}
#else
static int bond_option_ns_ip6_targets_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
return -EPERM;
}
#endif
static int bond_option_arp_validate_set(struct bonding *bond,

6
include/net/bonding.h
View File

@ -149,7 +149,9 @@ struct bond_params {
struct reciprocal_value reciprocal_packets_per_slave;
u16 ad_actor_sys_prio;
u16 ad_user_port_key;
#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr ns_targets[BOND_MAX_NS_TARGETS];
#endif
/* 2 bytes of padding : see ether_addr_equal_64bits() */
u8 ad_actor_system[ETH_ALEN + 2];
@ -503,12 +505,14 @@ static inline int bond_is_ip_target_ok(__be32 addr)
return !ipv4_is_lbcast(addr) && !ipv4_is_zeronet(addr);
}
#if IS_ENABLED(CONFIG_IPV6)
static inline int bond_is_ip6_target_ok(struct in6_addr *addr)
{
return !ipv6_addr_any(addr) &&
!ipv6_addr_loopback(addr) &&
!ipv6_addr_is_multicast(addr);
}
#endif
/* Get the oldest arp which we've received on this slave for bond's
* arp_targets.
@ -746,6 +750,7 @@ static inline int bond_get_targets_ip(__be32 *targets, __be32 ip)
return -1;
}
#if IS_ENABLED(CONFIG_IPV6)
static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr *ip)
{
int i;
@ -758,6 +763,7 @@ static inline int bond_get_targets_ip6(struct in6_addr *targets, struct in6_addr
return -1;
}
#endif
/* exported from bond_main.c */
extern unsigned int bond_net_id;