mirror of https://gitee.com/openkylin/linux.git
netlink: add nl_set_extack_cookie_u64()
Add a helper function nl_set_extack_cookie_u64() to use a u64 as the netlink extended ACK cookie, to avoid having to open-code it in any users of the cookie. A u64 should be sufficient for most subsystems though we allow for up to 20 bytes right now. This also matches the cookies in nl80211 where I intend to use this. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -110,6 +110,15 @@ struct netlink_ext_ack {
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} \
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} while (0)
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static inline void nl_set_extack_cookie_u64(struct netlink_ext_ack *extack,
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u64 cookie)
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{
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u64 __cookie = cookie;
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memcpy(extack->cookie, &__cookie, sizeof(__cookie));
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extack->cookie_len = sizeof(__cookie);
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}
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extern void netlink_kernel_release(struct sock *sk);
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extern int __netlink_change_ngroups(struct sock *sk, unsigned int groups);
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extern int netlink_change_ngroups(struct sock *sk, unsigned int groups);
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