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bpf: net: Change do_ipv6_getsockopt() to take the sockptr_t argument

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Similar to the earlier patch that changes sk_getsockopt() to
take the sockptr_t argument .  This patch also changes
do_ipv6_getsockopt() to take the sockptr_t argument such that
a latter patch can make bpf_getsockopt(SOL_IPV6) to reuse
do_ipv6_getsockopt().

Note on the change in ip6_mc_msfget().  This function is to
return an array of sockaddr_storage in optval.  This function
is shared between ipv6_get_msfilter() and compat_ipv6_get_msfilter().
However, the sockaddr_storage is stored at different offset of the
optval because of the difference between group_filter and
compat_group_filter.  Thus, a new 'ss_offset' argument is
added to ip6_mc_msfget().

Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20220902002853.2892532-1-kafai@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Martin KaFai Lau
2022-09-01 17:28:53 -07:00
committed by Alexei Starovoitov
parent 9c3f9707de
commit 6dadbe4bac
5 changed files with 50 additions and 43 deletions
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4
include/linux/mroute6.h
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@@ -27,7 +27,7 @@ struct sock;
#ifdef CONFIG_IPV6_MROUTE
extern int ip6_mroute_setsockopt(struct sock *, int, sockptr_t, unsigned int);
extern int ip6_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
extern int ip6_mroute_getsockopt(struct sock *, int, sockptr_t, sockptr_t);
extern int ip6_mr_input(struct sk_buff *skb);
extern int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg);
extern int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
@@ -42,7 +42,7 @@ static inline int ip6_mroute_setsockopt(struct sock *sock, int optname,
static inline
int ip6_mroute_getsockopt(struct sock *sock,
int optname, char __user *optval, int __user *optlen)
int optname, sockptr_t optval, sockptr_t optlen)
{
return -ENOPROTOOPT;
}