Add IP_RECVERR_RFC4884 and IPV6_RECVERR_RFC4884 from Linux 5.9

[Adhemerval Zanella]

On 23/10/2020 14:24, Joseph Myers wrote:
> Add the new constants IP_RECVERR_RFC4884 and IPV6_RECVERR_RFC4884 from
> Linux 5.9 to bits/in.h.
> 
> Tested for x86_64.

Ok, IP_RECVERR_RFC4884 was added on eba75c587e811d3 and IPV6_RECVERR_RFC4884
on 01370434df85eb76ecb; both on v5.9-rc1.

LGTM, thanks.

> 
> diff --git a/sysdeps/unix/sysv/linux/bits/in.h b/sysdeps/unix/sysv/linux/bits/in.h
> index 77cf4af449..2a0fbb0288 100644
> --- a/sysdeps/unix/sysv/linux/bits/in.h
> +++ b/sysdeps/unix/sysv/linux/bits/in.h
> @@ -102,6 +102,7 @@
>  #define IP_CHECKSUM     23
>  #define IP_BIND_ADDRESS_NO_PORT 24
>  #define IP_RECVFRAGSIZE 25
> +#define IP_RECVERR_RFC4884 26
>  
>  /* IP_MTU_DISCOVER arguments.  */
>  #define IP_PMTUDISC_DONT   0	/* Never send DF frames.  */
> @@ -193,6 +194,7 @@ struct in_pktinfo
>  #define IPV6_LEAVE_ANYCAST	28
>  #define IPV6_MULTICAST_ALL	29
>  #define IPV6_ROUTER_ALERT_ISOLATE 30
> +#define IPV6_RECVERR_RFC4884	31
>  #define IPV6_IPSEC_POLICY	34
>  #define IPV6_XFRM_POLICY	35
>  #define IPV6_HDRINCL		36
> 
>