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authorLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 08:00:01 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 08:00:01 -0700
commit199f4c9f76fd8b030405abddf294e771f888de03 (patch)
treeee4f104a7562e1fd76882bc40f2de7d90812e1df /include
parent37224470c8c6d90a4062e76a08d4dc1fcf91fc89 (diff)
parentca6bb5d7ab22ac79f608fe6cbc6b12de6a5a19f0 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NET]: Require CAP_NET_ADMIN to create tuntap devices. [NET]: fix net-core kernel-doc [TCP]: Move inclusion of <linux/dmaengine.h> to correct place in <linux/tcp.h> [IPSEC]: Handle GSO packets [NET]: Added GSO toggle [NET]: Add software TSOv4 [NET]: Add generic segmentation offload [NET]: Merge TSO/UFO fields in sk_buff [NET]: Prevent transmission after dev_deactivate [IPV6] ADDRCONF: Fix default source address selection without CONFIG_IPV6_PRIVACY [IPV6]: Fix source address selection. [NET]: Avoid allocating skb in skb_pad
Diffstat (limited to 'include')
-rw-r--r--include/linux/ethtool.h2
-rw-r--r--include/linux/netdevice.h23
-rw-r--r--include/linux/skbuff.h26
-rw-r--r--include/linux/tcp.h2
-rw-r--r--include/net/protocol.h1
-rw-r--r--include/net/sock.h5
-rw-r--r--include/net/tcp.h6
7 files changed, 50 insertions, 15 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index cf2abeca92a0..c6310aef5ab0 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -411,6 +411,8 @@ struct ethtool_ops {
#define ETHTOOL_GPERMADDR 0x00000020 /* Get permanent hardware address */
#define ETHTOOL_GUFO 0x00000021 /* Get UFO enable (ethtool_value) */
#define ETHTOOL_SUFO 0x00000022 /* Set UFO enable (ethtool_value) */
+#define ETHTOOL_GGSO 0x00000023 /* Get GSO enable (ethtool_value) */
+#define ETHTOOL_SGSO 0x00000024 /* Set GSO enable (ethtool_value) */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index cead6be467ed..bc747e5d7138 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -308,9 +308,13 @@ struct net_device
#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
-#define NETIF_F_TSO 2048 /* Can offload TCP/IP segmentation */
+#define NETIF_F_GSO 2048 /* Enable software GSO. */
#define NETIF_F_LLTX 4096 /* LockLess TX */
-#define NETIF_F_UFO 8192 /* Can offload UDP Large Send*/
+
+ /* Segmentation offload features */
+#define NETIF_F_GSO_SHIFT 16
+#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
+#define NETIF_F_UFO (SKB_GSO_UDPV4 << NETIF_F_GSO_SHIFT)
#define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
#define NETIF_F_ALL_CSUM (NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM)
@@ -402,6 +406,9 @@ struct net_device
struct list_head qdisc_list;
unsigned long tx_queue_len; /* Max frames per queue allowed */
+ /* Partially transmitted GSO packet. */
+ struct sk_buff *gso_skb;
+
/* ingress path synchronizer */
spinlock_t ingress_lock;
struct Qdisc *qdisc_ingress;
@@ -536,6 +543,7 @@ struct packet_type {
struct net_device *,
struct packet_type *,
struct net_device *);
+ struct sk_buff *(*gso_segment)(struct sk_buff *skb, int sg);
void *af_packet_priv;
struct list_head list;
};
@@ -686,7 +694,8 @@ extern int dev_change_name(struct net_device *, char *);
extern int dev_set_mtu(struct net_device *, int);
extern int dev_set_mac_address(struct net_device *,
struct sockaddr *);
-extern void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev);
+extern int dev_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *dev);
extern void dev_init(void);
@@ -960,6 +969,7 @@ extern int netdev_max_backlog;
extern int weight_p;
extern int netdev_set_master(struct net_device *dev, struct net_device *master);
extern int skb_checksum_help(struct sk_buff *skb, int inward);
+extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int sg);
#ifdef CONFIG_BUG
extern void netdev_rx_csum_fault(struct net_device *dev);
#else
@@ -979,6 +989,13 @@ extern void dev_seq_stop(struct seq_file *seq, void *v);
extern void linkwatch_run_queue(void);
+static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
+{
+ int feature = skb_shinfo(skb)->gso_type << NETIF_F_GSO_SHIFT;
+ return skb_shinfo(skb)->gso_size &&
+ (dev->features & feature) != feature;
+}
+
#endif /* __KERNEL__ */
#endif /* _LINUX_DEV_H */
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 66f8819f9568..16eef03ce0eb 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -134,9 +134,10 @@ struct skb_frag_struct {
struct skb_shared_info {
atomic_t dataref;
unsigned short nr_frags;
- unsigned short tso_size;
- unsigned short tso_segs;
- unsigned short ufo_size;
+ unsigned short gso_size;
+ /* Warning: this field is not always filled in (UFO)! */
+ unsigned short gso_segs;
+ unsigned short gso_type;
unsigned int ip6_frag_id;
struct sk_buff *frag_list;
skb_frag_t frags[MAX_SKB_FRAGS];
@@ -168,6 +169,11 @@ enum {
SKB_FCLONE_CLONE,
};
+enum {
+ SKB_GSO_TCPV4 = 1 << 0,
+ SKB_GSO_UDPV4 = 1 << 1,
+};
+
/**
* struct sk_buff - socket buffer
* @next: Next buffer in list
@@ -209,6 +215,8 @@ enum {
* @nf_bridge: Saved data about a bridged frame - see br_netfilter.c
* @tc_index: Traffic control index
* @tc_verd: traffic control verdict
+ * @dma_cookie: a cookie to one of several possible DMA operations
+ * done by skb DMA functions
* @secmark: security marking
*/
@@ -345,7 +353,7 @@ extern struct sk_buff *skb_realloc_headroom(struct sk_buff *skb,
extern struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
int newheadroom, int newtailroom,
gfp_t priority);
-extern struct sk_buff * skb_pad(struct sk_buff *skb, int pad);
+extern int skb_pad(struct sk_buff *skb, int pad);
#define dev_kfree_skb(a) kfree_skb(a)
extern void skb_over_panic(struct sk_buff *skb, int len,
void *here);
@@ -1122,16 +1130,15 @@ static inline int skb_cow(struct sk_buff *skb, unsigned int headroom)
*
* Pads up a buffer to ensure the trailing bytes exist and are
* blanked. If the buffer already contains sufficient data it
- * is untouched. Returns the buffer, which may be a replacement
- * for the original, or NULL for out of memory - in which case
- * the original buffer is still freed.
+ * is untouched. Otherwise it is extended. Returns zero on
+ * success. The skb is freed on error.
*/
-static inline struct sk_buff *skb_padto(struct sk_buff *skb, unsigned int len)
+static inline int skb_padto(struct sk_buff *skb, unsigned int len)
{
unsigned int size = skb->len;
if (likely(size >= len))
- return skb;
+ return 0;
return skb_pad(skb, len-size);
}
@@ -1292,6 +1299,7 @@ extern void skb_split(struct sk_buff *skb,
struct sk_buff *skb1, const u32 len);
extern void skb_release_data(struct sk_buff *skb);
+extern struct sk_buff *skb_segment(struct sk_buff *skb, int sg);
static inline void *skb_header_pointer(const struct sk_buff *skb, int offset,
int len, void *buffer)
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 420a689c3fb4..8ebf497907f8 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -18,7 +18,6 @@
#define _LINUX_TCP_H
#include <linux/types.h>
-#include <linux/dmaengine.h>
#include <asm/byteorder.h>
struct tcphdr {
@@ -161,6 +160,7 @@ struct tcp_info
#ifdef __KERNEL__
#include <linux/skbuff.h>
+#include <linux/dmaengine.h>
#include <net/sock.h>
#include <net/inet_connection_sock.h>
#include <net/inet_timewait_sock.h>
diff --git a/include/net/protocol.h b/include/net/protocol.h
index bcaee39bd2ff..3b6dc15c68a5 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -36,6 +36,7 @@
struct net_protocol {
int (*handler)(struct sk_buff *skb);
void (*err_handler)(struct sk_buff *skb, u32 info);
+ struct sk_buff *(*gso_segment)(struct sk_buff *skb, int sg);
int no_policy;
};
diff --git a/include/net/sock.h b/include/net/sock.h
index d10dfecb6cbd..2d8d6adf1616 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1030,9 +1030,13 @@ static inline void sk_setup_caps(struct sock *sk, struct dst_entry *dst)
{
__sk_dst_set(sk, dst);
sk->sk_route_caps = dst->dev->features;
+ if (sk->sk_route_caps & NETIF_F_GSO)
+ sk->sk_route_caps |= NETIF_F_TSO;
if (sk->sk_route_caps & NETIF_F_TSO) {
if (sock_flag(sk, SOCK_NO_LARGESEND) || dst->header_len)
sk->sk_route_caps &= ~NETIF_F_TSO;
+ else
+ sk->sk_route_caps |= NETIF_F_SG | NETIF_F_HW_CSUM;
}
}
@@ -1265,6 +1269,7 @@ sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
* sk_eat_skb - Release a skb if it is no longer needed
* @sk: socket to eat this skb from
* @skb: socket buffer to eat
+ * @copied_early: flag indicating whether DMA operations copied this data early
*
* This routine must be called with interrupts disabled or with the socket
* locked so that the sk_buff queue operation is ok.
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 5f4eb5c79689..ca3d38dfc00b 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -569,13 +569,13 @@ struct tcp_skb_cb {
*/
static inline int tcp_skb_pcount(const struct sk_buff *skb)
{
- return skb_shinfo(skb)->tso_segs;
+ return skb_shinfo(skb)->gso_segs;
}
/* This is valid iff tcp_skb_pcount() > 1. */
static inline int tcp_skb_mss(const struct sk_buff *skb)
{
- return skb_shinfo(skb)->tso_size;
+ return skb_shinfo(skb)->gso_size;
}
static inline void tcp_dec_pcount_approx(__u32 *count,
@@ -1086,6 +1086,8 @@ extern struct request_sock_ops tcp_request_sock_ops;
extern int tcp_v4_destroy_sock(struct sock *sk);
+extern struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int sg);
+
#ifdef CONFIG_PROC_FS
extern int tcp4_proc_init(void);
extern void tcp4_proc_exit(void);