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authorDavid S. Miller <davem@davemloft.net>2019-12-19 14:20:47 -0800
committerDavid S. Miller <davem@davemloft.net>2019-12-19 14:20:47 -0800
commit0fd260056ef84ede8f444c66a3820811691fe884 (patch)
tree0d0085f3791dc71f9aef31287c162a946229e01c /net
parent6fa9a115fe7ca507ef5618eb753706425741b285 (diff)
parent3123d8018d4686cf193806c4e27a9853550ed895 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says: ==================== pull-request: bpf 2019-12-19 The following pull-request contains BPF updates for your *net* tree. We've added 10 non-merge commits during the last 8 day(s) which contain a total of 21 files changed, 269 insertions(+), 108 deletions(-). The main changes are: 1) Fix lack of synchronization between xsk wakeup and destroying resources used by xsk wakeup, from Maxim Mikityanskiy. 2) Fix pruning with tail call patching, untrack programs in case of verifier error and fix a cgroup local storage tracking bug, from Daniel Borkmann. 3) Fix clearing skb->tstamp in bpf_redirect() when going from ingress to egress which otherwise cause issues e.g. on fq qdisc, from Lorenz Bauer. 4) Fix compile warning of unused proc_dointvec_minmax_bpf_restricted() when only cBPF is present, from Alexander Lobakin. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/filter.c1
-rw-r--r--net/core/sysctl_net_core.c2
-rw-r--r--net/xdp/xsk.c22
3 files changed, 17 insertions, 8 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index f1e703eed3d2..d914257763b5 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2055,6 +2055,7 @@ static inline int __bpf_tx_skb(struct net_device *dev, struct sk_buff *skb)
}
skb->dev = dev;
+ skb->tstamp = 0;
dev_xmit_recursion_inc();
ret = dev_queue_xmit(skb);
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index eb29e5adc84d..9f9e00ba3ad7 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -288,6 +288,7 @@ static int proc_dointvec_minmax_bpf_enable(struct ctl_table *table, int write,
return ret;
}
+# ifdef CONFIG_HAVE_EBPF_JIT
static int
proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
@@ -298,6 +299,7 @@ proc_dointvec_minmax_bpf_restricted(struct ctl_table *table, int write,
return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
}
+# endif /* CONFIG_HAVE_EBPF_JIT */
static int
proc_dolongvec_minmax_bpf_restricted(struct ctl_table *table, int write,
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index 956793893c9d..328f661b83b2 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -334,12 +334,21 @@ out:
}
EXPORT_SYMBOL(xsk_umem_consume_tx);
-static int xsk_zc_xmit(struct xdp_sock *xs)
+static int xsk_wakeup(struct xdp_sock *xs, u8 flags)
{
struct net_device *dev = xs->dev;
+ int err;
+
+ rcu_read_lock();
+ err = dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id, flags);
+ rcu_read_unlock();
+
+ return err;
+}
- return dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
- XDP_WAKEUP_TX);
+static int xsk_zc_xmit(struct xdp_sock *xs)
+{
+ return xsk_wakeup(xs, XDP_WAKEUP_TX);
}
static void xsk_destruct_skb(struct sk_buff *skb)
@@ -453,19 +462,16 @@ static __poll_t xsk_poll(struct file *file, struct socket *sock,
__poll_t mask = datagram_poll(file, sock, wait);
struct sock *sk = sock->sk;
struct xdp_sock *xs = xdp_sk(sk);
- struct net_device *dev;
struct xdp_umem *umem;
if (unlikely(!xsk_is_bound(xs)))
return mask;
- dev = xs->dev;
umem = xs->umem;
if (umem->need_wakeup) {
- if (dev->netdev_ops->ndo_xsk_wakeup)
- dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
- umem->need_wakeup);
+ if (xs->zc)
+ xsk_wakeup(xs, umem->need_wakeup);
else
/* Poll needs to drive Tx also in copy mode */
__xsk_sendmsg(sk);