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Diffstat (limited to 'net/packet/af_packet.c')
-rw-r--r--net/packet/af_packet.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index d9d4970..2dbb32b 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1499,10 +1499,11 @@ retry:
if (!skb) {
size_t reserved = LL_RESERVED_SPACE(dev);
+ int tlen = dev->needed_tailroom;
unsigned int hhlen = dev->header_ops ? dev->hard_header_len : 0;
rcu_read_unlock();
- skb = sock_wmalloc(sk, len + reserved, 0, GFP_KERNEL);
+ skb = sock_wmalloc(sk, len + reserved + tlen, 0, GFP_KERNEL);
if (skb == NULL)
return -ENOBUFS;
/* FIXME: Save some space for broken drivers that write a hard
@@ -1942,7 +1943,7 @@ static void tpacket_destruct_skb(struct sk_buff *skb)
static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
void *frame, struct net_device *dev, int size_max,
- __be16 proto, unsigned char *addr)
+ __be16 proto, unsigned char *addr, int hlen)
{
union {
struct tpacket_hdr *h1;
@@ -1976,7 +1977,7 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
return -EMSGSIZE;
}
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
+ skb_reserve(skb, hlen);
skb_reset_network_header(skb);
data = ph.raw + po->tp_hdrlen - sizeof(struct sockaddr_ll);
@@ -2051,6 +2052,7 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
unsigned char *addr;
int len_sum = 0;
int status = 0;
+ int hlen, tlen;
mutex_lock(&po->pg_vec_lock);
@@ -2099,16 +2101,17 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
}
status = TP_STATUS_SEND_REQUEST;
+ hlen = LL_RESERVED_SPACE(dev);
+ tlen = dev->needed_tailroom;
skb = sock_alloc_send_skb(&po->sk,
- LL_ALLOCATED_SPACE(dev)
- + sizeof(struct sockaddr_ll),
+ hlen + tlen + sizeof(struct sockaddr_ll),
0, &err);
if (unlikely(skb == NULL))
goto out_status;
tp_len = tpacket_fill_skb(po, skb, ph, dev, size_max, proto,
- addr);
+ addr, hlen);
if (unlikely(tp_len < 0)) {
if (po->tp_loss) {
@@ -2205,6 +2208,7 @@ static int packet_snd(struct socket *sock,
int vnet_hdr_len;
struct packet_sock *po = pkt_sk(sk);
unsigned short gso_type = 0;
+ int hlen, tlen;
/*
* Get and verify the address.
@@ -2289,8 +2293,9 @@ static int packet_snd(struct socket *sock,
goto out_unlock;
err = -ENOBUFS;
- skb = packet_alloc_skb(sk, LL_ALLOCATED_SPACE(dev),
- LL_RESERVED_SPACE(dev), len, vnet_hdr.hdr_len,
+ hlen = LL_RESERVED_SPACE(dev);
+ tlen = dev->needed_tailroom;
+ skb = packet_alloc_skb(sk, hlen + tlen, hlen, len, vnet_hdr.hdr_len,
msg->msg_flags & MSG_DONTWAIT, &err);
if (skb == NULL)
goto out_unlock;
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