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Diffstat (limited to 'net')
-rw-r--r--net/ipv4/tcp.c14
-rw-r--r--net/ipv4/tcp_ipv4.c1
-rw-r--r--net/ipv6/tcp_ipv6.c1
-rw-r--r--net/socket.c3
4 files changed, 19 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 856ae516ac18..26aa923cf522 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -4099,6 +4099,8 @@ static int do_tcp_getsockopt(struct sock *sk, int level,
return -EFAULT;
lock_sock(sk);
err = tcp_zerocopy_receive(sk, &zc);
+ err = BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sk, level, optname,
+ &zc, &len, err);
release_sock(sk);
if (len >= offsetofend(struct tcp_zerocopy_receive, err))
goto zerocopy_rcv_sk_err;
@@ -4133,6 +4135,18 @@ zerocopy_rcv_out:
return 0;
}
+bool tcp_bpf_bypass_getsockopt(int level, int optname)
+{
+ /* TCP do_tcp_getsockopt has optimized getsockopt implementation
+ * to avoid extra socket lock for TCP_ZEROCOPY_RECEIVE.
+ */
+ if (level == SOL_TCP && optname == TCP_ZEROCOPY_RECEIVE)
+ return true;
+
+ return false;
+}
+EXPORT_SYMBOL(tcp_bpf_bypass_getsockopt);
+
int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval,
int __user *optlen)
{
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 777306b5bc22..62b6fd385a47 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2793,6 +2793,7 @@ struct proto tcp_prot = {
.shutdown = tcp_shutdown,
.setsockopt = tcp_setsockopt,
.getsockopt = tcp_getsockopt,
+ .bpf_bypass_getsockopt = tcp_bpf_bypass_getsockopt,
.keepalive = tcp_set_keepalive,
.recvmsg = tcp_recvmsg,
.sendmsg = tcp_sendmsg,
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0e1509b02cb3..8539715ff035 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -2121,6 +2121,7 @@ struct proto tcpv6_prot = {
.shutdown = tcp_shutdown,
.setsockopt = tcp_setsockopt,
.getsockopt = tcp_getsockopt,
+ .bpf_bypass_getsockopt = tcp_bpf_bypass_getsockopt,
.keepalive = tcp_set_keepalive,
.recvmsg = tcp_recvmsg,
.sendmsg = tcp_sendmsg,
diff --git a/net/socket.c b/net/socket.c
index 33e8b6c4e1d3..7f0617ab5437 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2126,6 +2126,9 @@ SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
return __sys_setsockopt(fd, level, optname, optval, optlen);
}
+INDIRECT_CALLABLE_DECLARE(bool tcp_bpf_bypass_getsockopt(int level,
+ int optname));
+
/*
* Get a socket option. Because we don't know the option lengths we have
* to pass a user mode parameter for the protocols to sort out.