summaryrefslogtreecommitdiff
path: root/include/linux/skbuff.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/skbuff.h')
-rw-r--r--include/linux/skbuff.h173
1 files changed, 135 insertions, 38 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d6cdd6e87d53..2738d355cdf9 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -37,6 +37,7 @@
#include <net/flow_dissector.h>
#include <linux/splice.h>
#include <linux/in6.h>
+#include <net/flow.h>
/* A. Checksumming of received packets by device.
*
@@ -173,17 +174,24 @@ struct nf_bridge_info {
BRNF_PROTO_8021Q,
BRNF_PROTO_PPPOE
} orig_proto:8;
- bool pkt_otherhost;
+ u8 pkt_otherhost:1;
+ u8 in_prerouting:1;
+ u8 bridged_dnat:1;
__u16 frag_max_size;
- unsigned int mask;
struct net_device *physindev;
union {
- struct net_device *physoutdev;
- char neigh_header[8];
- };
- union {
+ /* prerouting: detect dnat in orig/reply direction */
__be32 ipv4_daddr;
struct in6_addr ipv6_daddr;
+
+ /* after prerouting + nat detected: store original source
+ * mac since neigh resolution overwrites it, only used while
+ * skb is out in neigh layer.
+ */
+ char neigh_header[8];
+
+ /* always valid & non-NULL from FORWARD on, for physdev match */
+ struct net_device *physoutdev;
};
};
#endif
@@ -506,6 +514,7 @@ static inline u32 skb_mstamp_us_delta(const struct skb_mstamp *t1,
* @no_fcs: Request NIC to treat last 4 bytes as Ethernet FCS
* @napi_id: id of the NAPI struct this skb came from
* @secmark: security marking
+ * @offload_fwd_mark: fwding offload mark
* @mark: Generic packet mark
* @vlan_proto: vlan encapsulation protocol
* @vlan_tci: vlan tag control information
@@ -650,9 +659,15 @@ struct sk_buff {
unsigned int sender_cpu;
};
#endif
+ union {
#ifdef CONFIG_NETWORK_SECMARK
- __u32 secmark;
+ __u32 secmark;
+#endif
+#ifdef CONFIG_NET_SWITCHDEV
+ __u32 offload_fwd_mark;
#endif
+ };
+
union {
__u32 mark;
__u32 reserved_tailroom;
@@ -922,14 +937,90 @@ enum pkt_hash_types {
PKT_HASH_TYPE_L4, /* Input: src_IP, dst_IP, src_port, dst_port */
};
-static inline void
-skb_set_hash(struct sk_buff *skb, __u32 hash, enum pkt_hash_types type)
+static inline void skb_clear_hash(struct sk_buff *skb)
{
- skb->l4_hash = (type == PKT_HASH_TYPE_L4);
+ skb->hash = 0;
skb->sw_hash = 0;
+ skb->l4_hash = 0;
+}
+
+static inline void skb_clear_hash_if_not_l4(struct sk_buff *skb)
+{
+ if (!skb->l4_hash)
+ skb_clear_hash(skb);
+}
+
+static inline void
+__skb_set_hash(struct sk_buff *skb, __u32 hash, bool is_sw, bool is_l4)
+{
+ skb->l4_hash = is_l4;
+ skb->sw_hash = is_sw;
skb->hash = hash;
}
+static inline void
+skb_set_hash(struct sk_buff *skb, __u32 hash, enum pkt_hash_types type)
+{
+ /* Used by drivers to set hash from HW */
+ __skb_set_hash(skb, hash, false, type == PKT_HASH_TYPE_L4);
+}
+
+static inline void
+__skb_set_sw_hash(struct sk_buff *skb, __u32 hash, bool is_l4)
+{
+ __skb_set_hash(skb, hash, true, is_l4);
+}
+
+void __skb_get_hash(struct sk_buff *skb);
+u32 skb_get_poff(const struct sk_buff *skb);
+u32 __skb_get_poff(const struct sk_buff *skb, void *data,
+ const struct flow_keys *keys, int hlen);
+__be32 __skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto,
+ void *data, int hlen_proto);
+
+static inline __be32 skb_flow_get_ports(const struct sk_buff *skb,
+ int thoff, u8 ip_proto)
+{
+ return __skb_flow_get_ports(skb, thoff, ip_proto, NULL, 0);
+}
+
+void skb_flow_dissector_init(struct flow_dissector *flow_dissector,
+ const struct flow_dissector_key *key,
+ unsigned int key_count);
+
+bool __skb_flow_dissect(const struct sk_buff *skb,
+ struct flow_dissector *flow_dissector,
+ void *target_container,
+ void *data, __be16 proto, int nhoff, int hlen,
+ unsigned int flags);
+
+static inline bool skb_flow_dissect(const struct sk_buff *skb,
+ struct flow_dissector *flow_dissector,
+ void *target_container, unsigned int flags)
+{
+ return __skb_flow_dissect(skb, flow_dissector, target_container,
+ NULL, 0, 0, 0, flags);
+}
+
+static inline bool skb_flow_dissect_flow_keys(const struct sk_buff *skb,
+ struct flow_keys *flow,
+ unsigned int flags)
+{
+ memset(flow, 0, sizeof(*flow));
+ return __skb_flow_dissect(skb, &flow_keys_dissector, flow,
+ NULL, 0, 0, 0, flags);
+}
+
+static inline bool skb_flow_dissect_flow_keys_buf(struct flow_keys *flow,
+ void *data, __be16 proto,
+ int nhoff, int hlen,
+ unsigned int flags)
+{
+ memset(flow, 0, sizeof(*flow));
+ return __skb_flow_dissect(NULL, &flow_keys_buf_dissector, flow,
+ data, proto, nhoff, hlen, flags);
+}
+
static inline __u32 skb_get_hash(struct sk_buff *skb)
{
if (!skb->l4_hash && !skb->sw_hash)
@@ -938,24 +1029,39 @@ static inline __u32 skb_get_hash(struct sk_buff *skb)
return skb->hash;
}
-__u32 skb_get_hash_perturb(const struct sk_buff *skb, u32 perturb);
+__u32 __skb_get_hash_flowi6(struct sk_buff *skb, const struct flowi6 *fl6);
-static inline __u32 skb_get_hash_raw(const struct sk_buff *skb)
+static inline __u32 skb_get_hash_flowi6(struct sk_buff *skb, const struct flowi6 *fl6)
{
+ if (!skb->l4_hash && !skb->sw_hash) {
+ struct flow_keys keys;
+ __u32 hash = __get_hash_from_flowi6(fl6, &keys);
+
+ __skb_set_sw_hash(skb, hash, flow_keys_have_l4(&keys));
+ }
+
return skb->hash;
}
-static inline void skb_clear_hash(struct sk_buff *skb)
+__u32 __skb_get_hash_flowi4(struct sk_buff *skb, const struct flowi4 *fl);
+
+static inline __u32 skb_get_hash_flowi4(struct sk_buff *skb, const struct flowi4 *fl4)
{
- skb->hash = 0;
- skb->sw_hash = 0;
- skb->l4_hash = 0;
+ if (!skb->l4_hash && !skb->sw_hash) {
+ struct flow_keys keys;
+ __u32 hash = __get_hash_from_flowi4(fl4, &keys);
+
+ __skb_set_sw_hash(skb, hash, flow_keys_have_l4(&keys));
+ }
+
+ return skb->hash;
}
-static inline void skb_clear_hash_if_not_l4(struct sk_buff *skb)
+__u32 skb_get_hash_perturb(const struct sk_buff *skb, u32 perturb);
+
+static inline __u32 skb_get_hash_raw(const struct sk_buff *skb)
{
- if (!skb->l4_hash)
- skb_clear_hash(skb);
+ return skb->hash;
}
static inline void skb_copy_hash(struct sk_buff *to, const struct sk_buff *from)
@@ -1602,20 +1708,16 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
/*
- * Propagate page->pfmemalloc to the skb if we can. The problem is
- * that not all callers have unique ownership of the page. If
- * pfmemalloc is set, we check the mapping as a mapping implies
- * page->index is set (index and pfmemalloc share space).
- * If it's a valid mapping, we cannot use page->pfmemalloc but we
- * do not lose pfmemalloc information as the pages would not be
- * allocated using __GFP_MEMALLOC.
+ * Propagate page pfmemalloc to the skb if we can. The problem is
+ * that not all callers have unique ownership of the page but rely
+ * on page_is_pfmemalloc doing the right thing(tm).
*/
frag->page.p = page;
frag->page_offset = off;
skb_frag_size_set(frag, size);
page = compound_head(page);
- if (page->pfmemalloc && !page->mapping)
+ if (page_is_pfmemalloc(page))
skb->pfmemalloc = true;
}
@@ -1947,7 +2049,7 @@ static inline void skb_probe_transport_header(struct sk_buff *skb,
if (skb_transport_header_was_set(skb))
return;
- else if (skb_flow_dissect_flow_keys(skb, &keys))
+ else if (skb_flow_dissect_flow_keys(skb, &keys, 0))
skb_set_transport_header(skb, keys.control.thoff);
else
skb_set_transport_header(skb, offset_hint);
@@ -2263,7 +2365,7 @@ static inline struct page *dev_alloc_page(void)
static inline void skb_propagate_pfmemalloc(struct page *page,
struct sk_buff *skb)
{
- if (page && page->pfmemalloc)
+ if (page_is_pfmemalloc(page))
skb->pfmemalloc = true;
}
@@ -2671,12 +2773,6 @@ static inline void skb_frag_list_init(struct sk_buff *skb)
skb_shinfo(skb)->frag_list = NULL;
}
-static inline void skb_frag_add_head(struct sk_buff *skb, struct sk_buff *frag)
-{
- frag->next = skb_shinfo(skb)->frag_list;
- skb_shinfo(skb)->frag_list = frag;
-}
-
#define skb_walk_frags(skb, iter) \
for (iter = skb_shinfo(skb)->frag_list; iter; iter = iter->next)
@@ -2884,11 +2980,11 @@ static inline bool skb_defer_rx_timestamp(struct sk_buff *skb)
*
* PHY drivers may accept clones of transmitted packets for
* timestamping via their phy_driver.txtstamp method. These drivers
- * must call this function to return the skb back to the stack, with
- * or without a timestamp.
+ * must call this function to return the skb back to the stack with a
+ * timestamp.
*
* @skb: clone of the the original outgoing packet
- * @hwtstamps: hardware time stamps, may be NULL if not available
+ * @hwtstamps: hardware time stamps
*
*/
void skb_complete_tx_timestamp(struct sk_buff *skb,
@@ -3468,5 +3564,6 @@ static inline unsigned int skb_gso_network_seglen(const struct sk_buff *skb)
skb_network_header(skb);
return hdr_len + skb_gso_transport_seglen(skb);
}
+
#endif /* __KERNEL__ */
#endif /* _LINUX_SKBUFF_H */
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-28 16:08:57 +0300