#define CHECKSUM_COMPLETE 2
#define CHECKSUM_PARTIAL 3
-#define SKB_DATA_ALIGN(X) (((X) + (SMP_CACHE_BYTES - 1)) & \
- ~(SMP_CACHE_BYTES - 1))
+#define SKB_DATA_ALIGN(X) ALIGN(X, SMP_CACHE_BYTES)
#define SKB_WITH_OVERHEAD(X) \
((X) - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
#define SKB_MAX_ORDER(X, ORDER) \
* struct skb_shared_hwtstamps - hardware time stamps
* @hwtstamp: hardware time stamp transformed into duration
* since arbitrary point in time
- * @syststamp: hwtstamp transformed to system time base
*
* Software time stamps generated by ktime_get_real() are stored in
- * skb->tstamp. The relation between the different kinds of time
- * stamps is as follows:
- *
- * syststamp and tstamp can be compared against each other in
- * arbitrary combinations. The accuracy of a
- * syststamp/tstamp/"syststamp from other device" comparison is
- * limited by the accuracy of the transformation into system time
- * base. This depends on the device driver and its underlying
- * hardware.
+ * skb->tstamp.
*
* hwtstamps can only be compared against other hwtstamps from
* the same device.
*/
struct skb_shared_hwtstamps {
ktime_t hwtstamp;
- ktime_t syststamp;
};
/* Definitions for tx_flags in struct skb_shared_info */
/* generate hardware time stamp */
SKBTX_HW_TSTAMP = 1 << 0,
- /* generate software time stamp */
+ /* generate software time stamp when queueing packet to NIC */
SKBTX_SW_TSTAMP = 1 << 1,
/* device driver is going to provide hardware time stamp */
* all frags to avoid possible bad checksum
*/
SKBTX_SHARED_FRAG = 1 << 5,
+
+ /* generate software time stamp when entering packet scheduling */
+ SKBTX_SCHED_TSTAMP = 1 << 6,
+
+ /* generate software timestamp on peer data acknowledgment */
+ SKBTX_ACK_TSTAMP = 1 << 7,
};
+#define SKBTX_ANY_SW_TSTAMP (SKBTX_SW_TSTAMP | \
+ SKBTX_SCHED_TSTAMP | \
+ SKBTX_ACK_TSTAMP)
+#define SKBTX_ANY_TSTAMP (SKBTX_HW_TSTAMP | SKBTX_ANY_SW_TSTAMP)
+
/*
* The callback notifies userspace to release buffers when skb DMA is done in
* lower device, the skb last reference should be 0 when calling this.
unsigned short gso_type;
struct sk_buff *frag_list;
struct skb_shared_hwtstamps hwtstamps;
+ u32 tskey;
__be32 ip6_frag_id;
/*
void skb_scrub_packet(struct sk_buff *skb, bool xnet);
unsigned int skb_gso_transport_seglen(const struct sk_buff *skb);
struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features);
+struct sk_buff *skb_vlan_untag(struct sk_buff *skb);
struct skb_checksum_ops {
__wsum (*update)(const void *mem, int len, __wsum wsum);
void skb_complete_tx_timestamp(struct sk_buff *skb,
struct skb_shared_hwtstamps *hwtstamps);
+void __skb_tstamp_tx(struct sk_buff *orig_skb,
+ struct skb_shared_hwtstamps *hwtstamps,
+ struct sock *sk, int tstype);
+
/**
* skb_tstamp_tx - queue clone of skb with send time stamps
* @orig_skb: the original outgoing packet