From 89114afd435a486deb8583e89f490fc274444d18 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 8 Jul 2006 13:34:32 -0700
Subject: [PATCH] [NET] gso: Add skb_is_gso
This patch adds the wrapper function skb_is_gso which can be used instead
of directly testing skb_shinfo(skb)->gso_size. This makes things a little
nicer and allows us to change the primary key for indicating whether an skb
is GSO (if we ever want to do that).
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/bnx2.c | 2 +-
drivers/net/chelsio/sge.c | 2 +-
drivers/net/e1000/e1000_main.c | 7 +++----
drivers/net/forcedeth.c | 2 +-
drivers/net/ixgb/ixgb_main.c | 2 +-
drivers/net/loopback.c | 2 +-
drivers/net/myri10ge/myri10ge.c | 2 +-
drivers/net/sky2.c | 2 +-
drivers/net/typhoon.c | 4 ++--
drivers/s390/net/qeth_main.c | 2 +-
include/linux/netdevice.h | 2 +-
include/linux/skbuff.h | 5 +++++
net/bridge/br_forward.c | 2 +-
net/bridge/br_netfilter.c | 2 +-
net/ipv4/ip_output.c | 4 ++--
net/ipv4/xfrm4_output.c | 2 +-
net/ipv6/ip6_output.c | 4 ++--
net/ipv6/xfrm6_output.c | 2 +-
18 files changed, 27 insertions(+), 23 deletions(-)
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 64b6a72b4f6a..db73de0d2511 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -1639,7 +1639,7 @@ bnx2_tx_int(struct bnx2 *bp)
skb = tx_buf->skb;
#ifdef BCM_TSO
/* partial BD completions possible with TSO packets */
- if (skb_shinfo(skb)->gso_size) {
+ if (skb_is_gso(skb)) {
u16 last_idx, last_ring_idx;
last_idx = sw_cons +
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index 87f94d939ff8..61b3754f50ff 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1417,7 +1417,7 @@ int t1_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct cpl_tx_pkt *cpl;
#ifdef NETIF_F_TSO
- if (skb_shinfo(skb)->gso_size) {
+ if (skb_is_gso(skb)) {
int eth_type;
struct cpl_tx_pkt_lso *hdr;
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index f77624f5f17b..1f34d06d01b0 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2394,7 +2394,7 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
int err;
- if (skb_shinfo(skb)->gso_size) {
+ if (skb_is_gso(skb)) {
if (skb_header_cloned(skb)) {
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
if (err)
@@ -2519,7 +2519,7 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
* tso gets written back prematurely before the data is fully
* DMA'd to the controller */
if (!skb->data_len && tx_ring->last_tx_tso &&
- !skb_shinfo(skb)->gso_size) {
+ !skb_is_gso(skb)) {
tx_ring->last_tx_tso = 0;
size -= 4;
}
@@ -2806,8 +2806,7 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
#ifdef NETIF_F_TSO
/* Controller Erratum workaround */
- if (!skb->data_len && tx_ring->last_tx_tso &&
- !skb_shinfo(skb)->gso_size)
+ if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
count++;
#endif
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 037d870712ff..ad81ec68f887 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -1495,7 +1495,7 @@ static int nv_start_xmit(struct sk_buff *skb, struct net_device *dev)
np->tx_skbuff[nr] = skb;
#ifdef NETIF_F_TSO
- if (skb_shinfo(skb)->gso_size)
+ if (skb_is_gso(skb))
tx_flags_extra = NV_TX2_TSO | (skb_shinfo(skb)->gso_size << NV_TX2_TSO_SHIFT);
else
#endif
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index b91e082483f6..7eb08d929139 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1173,7 +1173,7 @@ ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
uint16_t ipcse, tucse, mss;
int err;
- if(likely(skb_shinfo(skb)->gso_size)) {
+ if (likely(skb_is_gso(skb))) {
if (skb_header_cloned(skb)) {
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
if (err)
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 43fef7de8cb9..997cbce9af6e 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -139,7 +139,7 @@ static int loopback_xmit(struct sk_buff *skb, struct net_device *dev)
#endif
#ifdef LOOPBACK_TSO
- if (skb_shinfo(skb)->gso_size) {
+ if (skb_is_gso(skb)) {
BUG_ON(skb->protocol != htons(ETH_P_IP));
BUG_ON(skb->nh.iph->protocol != IPPROTO_TCP);
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index f4c8fd373b9b..ee1de971a712 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -2116,7 +2116,7 @@ abort_linearize:
}
idx = (idx + 1) & tx->mask;
} while (idx != last_idx);
- if (skb_shinfo(skb)->gso_size) {
+ if (skb_is_gso(skb)) {
printk(KERN_ERR
"myri10ge: %s: TSO but wanted to linearize?!?!?\n",
mgp->dev->name);
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 418f169a6a31..31093760aa1e 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1159,7 +1159,7 @@ static unsigned tx_le_req(const struct sk_buff *skb)
count = sizeof(dma_addr_t) / sizeof(u32);
count += skb_shinfo(skb)->nr_frags * count;
- if (skb_shinfo(skb)->gso_size)
+ if (skb_is_gso(skb))
++count;
if (skb->ip_summed == CHECKSUM_HW)
diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c
index 063816f2b11e..4103c37172f9 100644
--- a/drivers/net/typhoon.c
+++ b/drivers/net/typhoon.c
@@ -805,7 +805,7 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
* If problems develop with TSO, check this first.
*/
numDesc = skb_shinfo(skb)->nr_frags + 1;
- if(skb_tso_size(skb))
+ if (skb_is_gso(skb))
numDesc++;
/* When checking for free space in the ring, we need to also
@@ -845,7 +845,7 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
TYPHOON_TX_PF_VLAN_TAG_SHIFT);
}
- if(skb_tso_size(skb)) {
+ if (skb_is_gso(skb)) {
first_txd->processFlags |= TYPHOON_TX_PF_TCP_SEGMENT;
first_txd->numDesc++;
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index 8e8963f15731..329e12c1fae4 100644
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -4457,7 +4457,7 @@ qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
queue = card->qdio.out_qs
[qeth_get_priority_queue(card, skb, ipv, cast_type)];
- if (skb_shinfo(skb)->gso_size)
+ if (skb_is_gso(skb))
large_send = card->options.large_send;
/*are we able to do TSO ? If so ,prepare and send it from here */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 85f99f60deea..0359a6430018 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1001,7 +1001,7 @@ static inline int net_gso_ok(int features, int gso_type)
static inline int skb_gso_ok(struct sk_buff *skb, int features)
{
- return net_gso_ok(features, skb_shinfo(skb)->gso_size ?
+ return net_gso_ok(features, skb_is_gso(skb) ?
skb_shinfo(skb)->gso_type : 0);
}
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 3597b4f14389..0bf31b83578c 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1455,5 +1455,10 @@ static inline void skb_init_secmark(struct sk_buff *skb)
{ }
#endif
+static inline int skb_is_gso(const struct sk_buff *skb)
+{
+ return skb_shinfo(skb)->gso_size;
+}
+
#endif /* __KERNEL__ */
#endif /* _LINUX_SKBUFF_H */
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 8be9f2123e54..6ccd32b30809 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -35,7 +35,7 @@ static inline unsigned packet_length(const struct sk_buff *skb)
int br_dev_queue_push_xmit(struct sk_buff *skb)
{
/* drop mtu oversized packets except gso */
- if (packet_length(skb) > skb->dev->mtu && !skb_shinfo(skb)->gso_size)
+ if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb))
kfree_skb(skb);
else {
#ifdef CONFIG_BRIDGE_NETFILTER
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 8298a5179aef..cbc8a389a0a8 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -761,7 +761,7 @@ static int br_nf_dev_queue_xmit(struct sk_buff *skb)
{
if (skb->protocol == htons(ETH_P_IP) &&
skb->len > skb->dev->mtu &&
- !skb_shinfo(skb)->gso_size)
+ !skb_is_gso(skb))
return ip_fragment(skb, br_dev_queue_push_xmit);
else
return br_dev_queue_push_xmit(skb);
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index ca0e714613fb..7c9f9a6421b8 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -209,7 +209,7 @@ static inline int ip_finish_output(struct sk_buff *skb)
return dst_output(skb);
}
#endif
- if (skb->len > dst_mtu(skb->dst) && !skb_shinfo(skb)->gso_size)
+ if (skb->len > dst_mtu(skb->dst) && !skb_is_gso(skb))
return ip_fragment(skb, ip_finish_output2);
else
return ip_finish_output2(skb);
@@ -1095,7 +1095,7 @@ ssize_t ip_append_page(struct sock *sk, struct page *page,
while (size > 0) {
int i;
- if (skb_shinfo(skb)->gso_size)
+ if (skb_is_gso(skb))
len = size;
else {
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 193363e22932..d16f863cf687 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -134,7 +134,7 @@ static int xfrm4_output_finish(struct sk_buff *skb)
}
#endif
- if (!skb_shinfo(skb)->gso_size)
+ if (!skb_is_gso(skb))
return xfrm4_output_finish2(skb);
skb->protocol = htons(ETH_P_IP);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 2c5b44575af0..3bc74ce78800 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -147,7 +147,7 @@ static int ip6_output2(struct sk_buff *skb)
int ip6_output(struct sk_buff *skb)
{
- if ((skb->len > dst_mtu(skb->dst) && !skb_shinfo(skb)->gso_size) ||
+ if ((skb->len > dst_mtu(skb->dst) && !skb_is_gso(skb)) ||
dst_allfrag(skb->dst))
return ip6_fragment(skb, ip6_output2);
else
@@ -229,7 +229,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
skb->priority = sk->sk_priority;
mtu = dst_mtu(dst);
- if ((skb->len <= mtu) || ipfragok || skb_shinfo(skb)->gso_size) {
+ if ((skb->len <= mtu) || ipfragok || skb_is_gso(skb)) {
IP6_INC_STATS(IPSTATS_MIB_OUTREQUESTS);
return NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev,
dst_output);
diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 48fccb1eca08..0eea60ea9ebc 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -122,7 +122,7 @@ static int xfrm6_output_finish(struct sk_buff *skb)
{
struct sk_buff *segs;
- if (!skb_shinfo(skb)->gso_size)
+ if (!skb_is_gso(skb))
return xfrm6_output_finish2(skb);
skb->protocol = htons(ETH_P_IP);