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Message-Id: <20220429075659.9967-1-nicolas.dichtel@6wind.com> Date: Fri, 29 Apr 2022 09:56:59 +0200 From: Nicolas Dichtel <nicolas.dichtel@...nd.com> To: David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com> Cc: David Ahern <dsahern@...nel.org>, netdev@...r.kernel.org, Nicolas Dichtel <nicolas.dichtel@...nd.com> Subject: [PATCH net] ping: fix address binding wrt vrf When ping_group_range is updated, 'ping' uses the DGRAM ICMP socket, instead of an IP raw socket. In this case, 'ping' is unable to bind its socket to a local address owned by a vrflite. Before the patch: $ sysctl -w net.ipv4.ping_group_range='0 2147483647' $ ip link add blue type vrf table 10 $ ip link add foo type dummy $ ip link set foo master blue $ ip link set foo up $ ip addr add 192.168.1.1/24 dev foo $ ip vrf exec blue ping -c1 -I 192.168.1.1 192.168.1.2 ping: bind: Cannot assign requested address Fixes: 1b69c6d0ae90 ("net: Introduce L3 Master device abstraction") Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com> --- net/ipv4/ping.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 3ee947557b88..9ea326b50775 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -305,6 +305,7 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk, struct net *net = sock_net(sk); if (sk->sk_family == AF_INET) { struct sockaddr_in *addr = (struct sockaddr_in *) uaddr; + u32 tb_id = RT_TABLE_LOCAL; int chk_addr_ret; if (addr_len < sizeof(*addr)) @@ -318,7 +319,8 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk, pr_debug("ping_check_bind_addr(sk=%p,addr=%pI4,port=%d)\n", sk, &addr->sin_addr.s_addr, ntohs(addr->sin_port)); - chk_addr_ret = inet_addr_type(net, addr->sin_addr.s_addr); + tb_id = l3mdev_fib_table_by_index(net, sk->sk_bound_dev_if) ? : tb_id; + chk_addr_ret = inet_addr_type_table(net, addr->sin_addr.s_addr, tb_id); if (!inet_addr_valid_or_nonlocal(net, inet_sk(sk), addr->sin_addr.s_addr, -- 2.33.0
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