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[2001:4c4e:1e82:d600:957c:4591:3c65:86b5]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-432da27fbd2sm162639285e9.19.2024.11.18.06.52.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Nov 2024 06:52:29 -0800 (PST) From: Anna Emese Nyiri To: netdev@vger.kernel.org Cc: fejes@inf.elte.hu, annaemesenyiri@gmail.com, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, willemb@google.com, idosch@idosch.org Subject: [PATCH net-next v4 1/3] sock: Introduce sk_set_prio_allowed helper function Date: Mon, 18 Nov 2024 15:51:45 +0100 Message-ID: <20241118145147.56236-2-annaemesenyiri@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241118145147.56236-1-annaemesenyiri@gmail.com> References: <20241118145147.56236-1-annaemesenyiri@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Simplify priority setting permissions with the 'sk_set_prio_allowed' function, centralizing the validation logic. This change is made in anticipation of a second caller in a following patch. No functional changes. Reviewed-by: Willem de Bruijn Reviewed-by: Eric Dumazet Suggested-by: Willem de Bruijn Signed-off-by: Anna Emese Nyiri --- net/core/sock.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/net/core/sock.c b/net/core/sock.c index 74729d20cd00..9016f984d44e 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -454,6 +454,13 @@ static int sock_set_timeout(long *timeo_p, sockptr_t optval, int optlen, return 0; } +static bool sk_set_prio_allowed(const struct sock *sk, int val) +{ + return ((val >= TC_PRIO_BESTEFFORT && val <= TC_PRIO_INTERACTIVE) || + sockopt_ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) || + sockopt_ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)); +} + static bool sock_needs_netstamp(const struct sock *sk) { switch (sk->sk_family) { @@ -1193,9 +1200,7 @@ int sk_setsockopt(struct sock *sk, int level, int optname, /* handle options which do not require locking the socket. */ switch (optname) { case SO_PRIORITY: - if ((val >= 0 && val <= 6) || - sockopt_ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) || - sockopt_ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) { + if (sk_set_prio_allowed(sk, val)) { sock_set_priority(sk, val); return 0; }