From: Martin KaFai Lau <kafai@fb.com>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
David Miller <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, <kernel-team@fb.com>,
Paolo Abeni <pabeni@redhat.com>,
Stanislav Fomichev <sdf@google.com>
Subject: [PATCH v3 bpf-next 06/15] bpf: net: Change do_ipv6_setsockopt() to use the sockopt's lock_sock() and capable()
Date: Wed, 10 Aug 2022 12:08:03 -0700 [thread overview]
Message-ID: <20220810190803.2697405-1-kafai@fb.com> (raw)
In-Reply-To: <20220810190724.2692127-1-kafai@fb.com>
Similar to the earlier patch that avoids sk_setsockopt() from
taking sk lock and doing capable test when called by bpf. This patch
changes do_ipv6_setsockopt() to use the sockopt_{lock,release}_sock()
and sockopt_[ns_]capable().
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
---
net/ipv6/ipv6_sockglue.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 222f6bf220ba..d23de48ff612 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -327,7 +327,7 @@ static int ipv6_set_opt_hdr(struct sock *sk, int optname, sockptr_t optval,
int err;
/* hop-by-hop / destination options are privileged option */
- if (optname != IPV6_RTHDR && !ns_capable(net->user_ns, CAP_NET_RAW))
+ if (optname != IPV6_RTHDR && !sockopt_ns_capable(net->user_ns, CAP_NET_RAW))
return -EPERM;
/* remove any sticky options header with a zero option
@@ -417,7 +417,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
if (needs_rtnl)
rtnl_lock();
- lock_sock(sk);
+ sockopt_lock_sock(sk);
switch (optname) {
@@ -634,8 +634,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
break;
case IPV6_TRANSPARENT:
- if (valbool && !ns_capable(net->user_ns, CAP_NET_RAW) &&
- !ns_capable(net->user_ns, CAP_NET_ADMIN)) {
+ if (valbool && !sockopt_ns_capable(net->user_ns, CAP_NET_RAW) &&
+ !sockopt_ns_capable(net->user_ns, CAP_NET_ADMIN)) {
retv = -EPERM;
break;
}
@@ -946,7 +946,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
case IPV6_IPSEC_POLICY:
case IPV6_XFRM_POLICY:
retv = -EPERM;
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
+ if (!sockopt_ns_capable(net->user_ns, CAP_NET_ADMIN))
break;
retv = xfrm_user_policy(sk, optname, optval, optlen);
break;
@@ -994,14 +994,14 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
break;
}
- release_sock(sk);
+ sockopt_release_sock(sk);
if (needs_rtnl)
rtnl_unlock();
return retv;
e_inval:
- release_sock(sk);
+ sockopt_release_sock(sk);
if (needs_rtnl)
rtnl_unlock();
return -EINVAL;
--
2.30.2
next prev parent reply other threads:[~2022-08-10 19:11 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-10 19:07 [PATCH v3 bpf-next 00/15] bpf: net: Remove duplicated code from bpf_setsockopt() Martin KaFai Lau
2022-08-10 19:07 ` [PATCH v3 bpf-next 01/15] net: Add sk_setsockopt() to take the sk ptr instead of the sock ptr Martin KaFai Lau
2022-08-10 19:07 ` [PATCH v3 bpf-next 02/15] bpf: net: Avoid sk_setsockopt() taking sk lock when called from bpf Martin KaFai Lau
2022-08-16 3:32 ` Andrii Nakryiko
2022-08-10 19:07 ` [PATCH v3 bpf-next 03/15] bpf: net: Consider has_current_bpf_ctx() when testing capable() in sk_setsockopt() Martin KaFai Lau
2022-08-10 19:07 ` [PATCH v3 bpf-next 04/15] bpf: net: Change do_tcp_setsockopt() to use the sockopt's lock_sock() and capable() Martin KaFai Lau
2022-08-10 19:07 ` [PATCH v3 bpf-next 05/15] bpf: net: Change do_ip_setsockopt() " Martin KaFai Lau
2022-08-10 19:08 ` Martin KaFai Lau [this message]
2022-08-10 19:08 ` [PATCH v3 bpf-next 07/15] bpf: Initialize the bpf_run_ctx in bpf_iter_run_prog() Martin KaFai Lau
2022-08-16 3:33 ` Andrii Nakryiko
2022-08-10 19:08 ` [PATCH v3 bpf-next 08/15] bpf: Embed kernel CONFIG check into the if statement in bpf_setsockopt Martin KaFai Lau
2022-08-10 19:08 ` [PATCH v3 bpf-next 09/15] bpf: Change bpf_setsockopt(SOL_SOCKET) to reuse sk_setsockopt() Martin KaFai Lau
2022-08-10 19:08 ` [PATCH v3 bpf-next 10/15] bpf: Refactor bpf specific tcp optnames to a new function Martin KaFai Lau
2022-08-10 19:08 ` [PATCH v3 bpf-next 11/15] bpf: Change bpf_setsockopt(SOL_TCP) to reuse do_tcp_setsockopt() Martin KaFai Lau
2022-08-10 19:08 ` [PATCH v3 bpf-next 12/15] bpf: Change bpf_setsockopt(SOL_IP) to reuse do_ip_setsockopt() Martin KaFai Lau
2022-08-10 19:08 ` [PATCH v3 bpf-next 13/15] bpf: Change bpf_setsockopt(SOL_IPV6) to reuse do_ipv6_setsockopt() Martin KaFai Lau
2022-08-10 19:08 ` [PATCH v3 bpf-next 14/15] bpf: Add a few optnames to bpf_setsockopt Martin KaFai Lau
2022-08-10 19:09 ` [PATCH v3 bpf-next 15/15] selftests/bpf: bpf_setsockopt tests Martin KaFai Lau
2022-08-11 17:04 ` [PATCH v3 bpf-next 00/15] bpf: net: Remove duplicated code from bpf_setsockopt() sdf
2022-08-15 22:04 ` Daniel Borkmann
2022-08-17 5:23 ` Martin KaFai Lau
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