From: Eric Dumazet <edumazet@google.com>
Date: Mon, 15 Nov 2021 09:05:51 -0800
Subject: net: move gro definitions to include/net/gro.h
Patch-mainline: v5.17-rc1
Git-commit: 4721031c3559db8eae61df305f10c00099a7c1d0
References: jsc#PED-535
include/linux/netdevice.h became too big, move gro stuff
into include/net/gro.h
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 1
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 1
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 1
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 1
drivers/net/ethernet/qlogic/qede/qede_fp.c | 1
drivers/net/geneve.c | 1
drivers/net/vxlan.c | 1
include/linux/netdevice.h | 348 ---------------------
include/net/gro.h | 396 +++++++++++++++++++++++-
include/net/ip.h | 8
include/net/ip6_checksum.h | 8
include/net/udp.h | 24 -
net/core/skbuff.c | 1
net/ipv4/af_inet.c | 1
net/ipv4/esp4_offload.c | 1
net/ipv4/fou.c | 1
net/ipv4/gre_offload.c | 1
net/ipv4/tcp_offload.c | 1
net/ipv4/udp_offload.c | 1
net/ipv6/esp6_offload.c | 1
net/ipv6/tcpv6_offload.c | 1
net/ipv6/udp_offload.c | 1
22 files changed, 411 insertions(+), 390 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -25,6 +25,7 @@
#include <linux/ip.h>
#include <linux/crash_dump.h>
#include <net/tcp.h>
+#include <net/gro.h>
#include <net/ipv6.h>
#include <net/ip6_checksum.h>
#include <linux/prefetch.h>
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -37,6 +37,7 @@
#include <linux/if_bridge.h>
#include <linux/rtc.h>
#include <linux/bpf.h>
+#include <net/gro.h>
#include <net/ip.h>
#include <net/tcp.h>
#include <net/udp.h>
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -17,6 +17,7 @@
#include <linux/skbuff.h>
#include <linux/sctp.h>
#include <net/gre.h>
+#include <net/gro.h>
#include <net/ip6_checksum.h>
#include <net/pkt_cls.h>
#include <net/tcp.h>
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -37,6 +37,7 @@
#include <net/ip6_checksum.h>
#include <net/page_pool.h>
#include <net/inet_ecn.h>
+#include <net/gro.h>
#include <net/udp.h>
#include <net/tcp.h>
#include "en.h"
--- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
@@ -10,6 +10,7 @@
#include <linux/bpf_trace.h>
#include <net/udp_tunnel.h>
#include <linux/ip.h>
+#include <net/gro.h>
#include <net/ipv6.h>
#include <net/tcp.h>
#include <linux/if_ether.h>
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -17,6 +17,7 @@
#include <net/gro_cells.h>
#include <net/rtnetlink.h>
#include <net/geneve.h>
+#include <net/gro.h>
#include <net/protocol.h>
#define GENEVE_NETDEV_VER "0.6"
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -17,6 +17,7 @@
#include <linux/ethtool.h>
#include <net/arp.h>
#include <net/ndisc.h>
+#include <net/gro.h>
#include <net/ipv6_stubs.h>
#include <net/ip.h>
#include <net/icmp.h>
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2505,109 +2505,6 @@ static inline void netif_napi_del(struct
synchronize_net();
}
-struct napi_gro_cb {
- /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
- void *frag0;
-
- /* Length of frag0. */
- unsigned int frag0_len;
-
- /* This indicates where we are processing relative to skb->data. */
- int data_offset;
-
- /* This is non-zero if the packet cannot be merged with the new skb. */
- u16 flush;
-
- /* Save the IP ID here and check when we get to the transport layer */
- u16 flush_id;
-
- /* Number of segments aggregated. */
- u16 count;
-
- /* Start offset for remote checksum offload */
- u16 gro_remcsum_start;
-
- /* jiffies when first packet was created/queued */
- unsigned long age;
-
- /* Used in ipv6_gro_receive() and foo-over-udp */
- u16 proto;
-
- /* This is non-zero if the packet may be of the same flow. */
- u8 same_flow:1;
-
- /* Used in tunnel GRO receive */
- u8 encap_mark:1;
-
- /* GRO checksum is valid */
- u8 csum_valid:1;
-
- /* Number of checksums via CHECKSUM_UNNECESSARY */
- u8 csum_cnt:3;
-
- /* Free the skb? */
- u8 free:2;
-#define NAPI_GRO_FREE 1
-#define NAPI_GRO_FREE_STOLEN_HEAD 2
-
- /* Used in foo-over-udp, set in udp[46]_gro_receive */
- u8 is_ipv6:1;
-
- /* Used in GRE, set in fou/gue_gro_receive */
- u8 is_fou:1;
-
- /* Used to determine if flush_id can be ignored */
- u8 is_atomic:1;
-
- /* Number of gro_receive callbacks this packet already went through */
- u8 recursion_counter:4;
-
- /* GRO is done by frag_list pointer chaining. */
- u8 is_flist:1;
-
- /* used to support CHECKSUM_COMPLETE for tunneling protocols */
- __wsum csum;
-
- /* used in skb_gro_receive() slow path */
- struct sk_buff *last;
-};
-
-#define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
-
-#define GRO_RECURSION_LIMIT 15
-static inline int gro_recursion_inc_test(struct sk_buff *skb)
-{
- return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT;
-}
-
-typedef struct sk_buff *(*gro_receive_t)(struct list_head *, struct sk_buff *);
-static inline struct sk_buff *call_gro_receive(gro_receive_t cb,
- struct list_head *head,
- struct sk_buff *skb)
-{
- if (unlikely(gro_recursion_inc_test(skb))) {
- NAPI_GRO_CB(skb)->flush |= 1;
- return NULL;
- }
-
- return cb(head, skb);
-}
-
-typedef struct sk_buff *(*gro_receive_sk_t)(struct sock *, struct list_head *,
- struct sk_buff *);
-static inline struct sk_buff *call_gro_receive_sk(gro_receive_sk_t cb,
- struct sock *sk,
- struct list_head *head,
- struct sk_buff *skb)
-{
- if (unlikely(gro_recursion_inc_test(skb))) {
- NAPI_GRO_CB(skb)->flush |= 1;
- return NULL;
- }
-
- return cb(sk, head, skb);
-}
-
struct packet_type {
__be16 type; /* This is really htons(ether_type). */
bool ignore_outgoing;
@@ -2993,251 +2890,6 @@ int dev_restart(struct net_device *dev);
int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb);
int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb);
-static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
-{
- return NAPI_GRO_CB(skb)->data_offset;
-}
-
-static inline unsigned int skb_gro_len(const struct sk_buff *skb)
-{
- return skb->len - NAPI_GRO_CB(skb)->data_offset;
-}
-
-static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
-{
- NAPI_GRO_CB(skb)->data_offset += len;
-}
-
-static inline void *skb_gro_header_fast(struct sk_buff *skb,
- unsigned int offset)
-{
- return NAPI_GRO_CB(skb)->frag0 + offset;
-}
-
-static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
-{
- return NAPI_GRO_CB(skb)->frag0_len < hlen;
-}
-
-static inline void skb_gro_frag0_invalidate(struct sk_buff *skb)
-{
- NAPI_GRO_CB(skb)->frag0 = NULL;
- NAPI_GRO_CB(skb)->frag0_len = 0;
-}
-
-static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
- unsigned int offset)
-{
- if (!pskb_may_pull(skb, hlen))
- return NULL;
-
- skb_gro_frag0_invalidate(skb);
- return skb->data + offset;
-}
-
-static inline void *skb_gro_network_header(struct sk_buff *skb)
-{
- return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
- skb_network_offset(skb);
-}
-
-static inline void skb_gro_postpull_rcsum(struct sk_buff *skb,
- const void *start, unsigned int len)
-{
- if (NAPI_GRO_CB(skb)->csum_valid)
- NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum,
- csum_partial(start, len, 0));
-}
-
-/* GRO checksum functions. These are logical equivalents of the normal
- * checksum functions (in skbuff.h) except that they operate on the GRO
- * offsets and fields in sk_buff.
- */
-
-__sum16 __skb_gro_checksum_complete(struct sk_buff *skb);
-
-static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb)
-{
- return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb));
-}
-
-static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb,
- bool zero_okay,
- __sum16 check)
-{
- return ((skb->ip_summed != CHECKSUM_PARTIAL ||
- skb_checksum_start_offset(skb) <
- skb_gro_offset(skb)) &&
- !skb_at_gro_remcsum_start(skb) &&
- NAPI_GRO_CB(skb)->csum_cnt == 0 &&
- (!zero_okay || check));
-}
-
-static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb,
- __wsum psum)
-{
- if (NAPI_GRO_CB(skb)->csum_valid &&
- !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum)))
- return 0;
-
- NAPI_GRO_CB(skb)->csum = psum;
-
- return __skb_gro_checksum_complete(skb);
-}
-
-static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
-{
- if (NAPI_GRO_CB(skb)->csum_cnt > 0) {
- /* Consume a checksum from CHECKSUM_UNNECESSARY */
- NAPI_GRO_CB(skb)->csum_cnt--;
- } else {
- /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we
- * verified a new top level checksum or an encapsulated one
- * during GRO. This saves work if we fallback to normal path.
- */
- __skb_incr_checksum_unnecessary(skb);
- }
-}
-
-#define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \
- compute_pseudo) \
-({ \
- __sum16 __ret = 0; \
- if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \
- __ret = __skb_gro_checksum_validate_complete(skb, \
- compute_pseudo(skb, proto)); \
- if (!__ret) \
- skb_gro_incr_csum_unnecessary(skb); \
- __ret; \
-})
-
-#define skb_gro_checksum_validate(skb, proto, compute_pseudo) \
- __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo)
-
-#define skb_gro_checksum_validate_zero_check(skb, proto, check, \
- compute_pseudo) \
- __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo)
-
-#define skb_gro_checksum_simple_validate(skb) \
- __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo)
-
-static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb)
-{
- return (NAPI_GRO_CB(skb)->csum_cnt == 0 &&
- !NAPI_GRO_CB(skb)->csum_valid);
-}
-
-static inline void __skb_gro_checksum_convert(struct sk_buff *skb,
- __wsum pseudo)
-{
- NAPI_GRO_CB(skb)->csum = ~pseudo;
- NAPI_GRO_CB(skb)->csum_valid = 1;
-}
-
-#define skb_gro_checksum_try_convert(skb, proto, compute_pseudo) \
-do { \
- if (__skb_gro_checksum_convert_check(skb)) \
- __skb_gro_checksum_convert(skb, \
- compute_pseudo(skb, proto)); \
-} while (0)
-
-struct gro_remcsum {
- int offset;
- __wsum delta;
-};
-
-static inline void skb_gro_remcsum_init(struct gro_remcsum *grc)
-{
- grc->offset = 0;
- grc->delta = 0;
-}
-
-static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr,
- unsigned int off, size_t hdrlen,
- int start, int offset,
- struct gro_remcsum *grc,
- bool nopartial)
-{
- __wsum delta;
- size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start);
-
- BUG_ON(!NAPI_GRO_CB(skb)->csum_valid);
-
- if (!nopartial) {
- NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start;
- return ptr;
- }
-
- ptr = skb_gro_header_fast(skb, off);
- if (skb_gro_header_hard(skb, off + plen)) {
- ptr = skb_gro_header_slow(skb, off + plen, off);
- if (!ptr)
- return NULL;
- }
-
- delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum,
- start, offset);
-
- /* Adjust skb->csum since we changed the packet */
- NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta);
-
- grc->offset = off + hdrlen + offset;
- grc->delta = delta;
-
- return ptr;
-}
-
-static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb,
- struct gro_remcsum *grc)
-{
- void *ptr;
- size_t plen = grc->offset + sizeof(u16);
-
- if (!grc->delta)
- return;
-
- ptr = skb_gro_header_fast(skb, grc->offset);
- if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) {
- ptr = skb_gro_header_slow(skb, plen, grc->offset);
- if (!ptr)
- return;
- }
-
- remcsum_unadjust((__sum16 *)ptr, grc->delta);
-}
-
-#ifdef CONFIG_XFRM_OFFLOAD
-static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush)
-{
- if (PTR_ERR(pp) != -EINPROGRESS)
- NAPI_GRO_CB(skb)->flush |= flush;
-}
-static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb,
- struct sk_buff *pp,
- int flush,
- struct gro_remcsum *grc)
-{
- if (PTR_ERR(pp) != -EINPROGRESS) {
- NAPI_GRO_CB(skb)->flush |= flush;
- skb_gro_remcsum_cleanup(skb, grc);
- skb->remcsum_offload = 0;
- }
-}
-#else
-static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush)
-{
- NAPI_GRO_CB(skb)->flush |= flush;
-}
-static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb,
- struct sk_buff *pp,
- int flush,
- struct gro_remcsum *grc)
-{
- NAPI_GRO_CB(skb)->flush |= flush;
- skb_gro_remcsum_cleanup(skb, grc);
- skb->remcsum_offload = 0;
-}
-#endif
static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
unsigned short type,
--- a/include/net/gro.h
+++ b/include/net/gro.h
@@ -4,9 +4,367 @@
#define _NET_IPV6_GRO_H
#include <linux/indirect_call_wrapper.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/skbuff.h>
+#include <net/udp.h>
-struct list_head;
-struct sk_buff;
+struct napi_gro_cb {
+ /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
+ void *frag0;
+
+ /* Length of frag0. */
+ unsigned int frag0_len;
+
+ /* This indicates where we are processing relative to skb->data. */
+ int data_offset;
+
+ /* This is non-zero if the packet cannot be merged with the new skb. */
+ u16 flush;
+
+ /* Save the IP ID here and check when we get to the transport layer */
+ u16 flush_id;
+
+ /* Number of segments aggregated. */
+ u16 count;
+
+ /* Start offset for remote checksum offload */
+ u16 gro_remcsum_start;
+
+ /* jiffies when first packet was created/queued */
+ unsigned long age;
+
+ /* Used in ipv6_gro_receive() and foo-over-udp */
+ u16 proto;
+
+ /* This is non-zero if the packet may be of the same flow. */
+ u8 same_flow:1;
+
+ /* Used in tunnel GRO receive */
+ u8 encap_mark:1;
+
+ /* GRO checksum is valid */
+ u8 csum_valid:1;
+
+ /* Number of checksums via CHECKSUM_UNNECESSARY */
+ u8 csum_cnt:3;
+
+ /* Free the skb? */
+ u8 free:2;
+#define NAPI_GRO_FREE 1
+#define NAPI_GRO_FREE_STOLEN_HEAD 2
+
+ /* Used in foo-over-udp, set in udp[46]_gro_receive */
+ u8 is_ipv6:1;
+
+ /* Used in GRE, set in fou/gue_gro_receive */
+ u8 is_fou:1;
+
+ /* Used to determine if flush_id can be ignored */
+ u8 is_atomic:1;
+
+ /* Number of gro_receive callbacks this packet already went through */
+ u8 recursion_counter:4;
+
+ /* GRO is done by frag_list pointer chaining. */
+ u8 is_flist:1;
+
+ /* used to support CHECKSUM_COMPLETE for tunneling protocols */
+ __wsum csum;
+
+ /* used in skb_gro_receive() slow path */
+ struct sk_buff *last;
+};
+
+#define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
+
+#define GRO_RECURSION_LIMIT 15
+static inline int gro_recursion_inc_test(struct sk_buff *skb)
+{
+ return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT;
+}
+
+typedef struct sk_buff *(*gro_receive_t)(struct list_head *, struct sk_buff *);
+static inline struct sk_buff *call_gro_receive(gro_receive_t cb,
+ struct list_head *head,
+ struct sk_buff *skb)
+{
+ if (unlikely(gro_recursion_inc_test(skb))) {
+ NAPI_GRO_CB(skb)->flush |= 1;
+ return NULL;
+ }
+
+ return cb(head, skb);
+}
+
+typedef struct sk_buff *(*gro_receive_sk_t)(struct sock *, struct list_head *,
+ struct sk_buff *);
+static inline struct sk_buff *call_gro_receive_sk(gro_receive_sk_t cb,
+ struct sock *sk,
+ struct list_head *head,
+ struct sk_buff *skb)
+{
+ if (unlikely(gro_recursion_inc_test(skb))) {
+ NAPI_GRO_CB(skb)->flush |= 1;
+ return NULL;
+ }
+
+ return cb(sk, head, skb);
+}
+
+static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
+{
+ return NAPI_GRO_CB(skb)->data_offset;
+}
+
+static inline unsigned int skb_gro_len(const struct sk_buff *skb)
+{
+ return skb->len - NAPI_GRO_CB(skb)->data_offset;
+}
+
+static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
+{
+ NAPI_GRO_CB(skb)->data_offset += len;
+}
+
+static inline void *skb_gro_header_fast(struct sk_buff *skb,
+ unsigned int offset)
+{
+ return NAPI_GRO_CB(skb)->frag0 + offset;
+}
+
+static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
+{
+ return NAPI_GRO_CB(skb)->frag0_len < hlen;
+}
+
+static inline void skb_gro_frag0_invalidate(struct sk_buff *skb)
+{
+ NAPI_GRO_CB(skb)->frag0 = NULL;
+ NAPI_GRO_CB(skb)->frag0_len = 0;
+}
+
+static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
+ unsigned int offset)
+{
+ if (!pskb_may_pull(skb, hlen))
+ return NULL;
+
+ skb_gro_frag0_invalidate(skb);
+ return skb->data + offset;
+}
+
+static inline void *skb_gro_network_header(struct sk_buff *skb)
+{
+ return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
+ skb_network_offset(skb);
+}
+
+static inline __wsum inet_gro_compute_pseudo(struct sk_buff *skb, int proto)
+{
+ const struct iphdr *iph = skb_gro_network_header(skb);
+
+ return csum_tcpudp_nofold(iph->saddr, iph->daddr,
+ skb_gro_len(skb), proto, 0);
+}
+
+static inline void skb_gro_postpull_rcsum(struct sk_buff *skb,
+ const void *start, unsigned int len)
+{
+ if (NAPI_GRO_CB(skb)->csum_valid)
+ NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum,
+ csum_partial(start, len, 0));
+}
+
+/* GRO checksum functions. These are logical equivalents of the normal
+ * checksum functions (in skbuff.h) except that they operate on the GRO
+ * offsets and fields in sk_buff.
+ */
+
+__sum16 __skb_gro_checksum_complete(struct sk_buff *skb);
+
+static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb)
+{
+ return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb));
+}
+
+static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb,
+ bool zero_okay,
+ __sum16 check)
+{
+ return ((skb->ip_summed != CHECKSUM_PARTIAL ||
+ skb_checksum_start_offset(skb) <
+ skb_gro_offset(skb)) &&
+ !skb_at_gro_remcsum_start(skb) &&
+ NAPI_GRO_CB(skb)->csum_cnt == 0 &&
+ (!zero_okay || check));
+}
+
+static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb,
+ __wsum psum)
+{
+ if (NAPI_GRO_CB(skb)->csum_valid &&
+ !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum)))
+ return 0;
+
+ NAPI_GRO_CB(skb)->csum = psum;
+
+ return __skb_gro_checksum_complete(skb);
+}
+
+static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
+{
+ if (NAPI_GRO_CB(skb)->csum_cnt > 0) {
+ /* Consume a checksum from CHECKSUM_UNNECESSARY */
+ NAPI_GRO_CB(skb)->csum_cnt--;
+ } else {
+ /* Update skb for CHECKSUM_UNNECESSARY and csum_level when we
+ * verified a new top level checksum or an encapsulated one
+ * during GRO. This saves work if we fallback to normal path.
+ */
+ __skb_incr_checksum_unnecessary(skb);
+ }
+}
+
+#define __skb_gro_checksum_validate(skb, proto, zero_okay, check, \
+ compute_pseudo) \
+({ \
+ __sum16 __ret = 0; \
+ if (__skb_gro_checksum_validate_needed(skb, zero_okay, check)) \
+ __ret = __skb_gro_checksum_validate_complete(skb, \
+ compute_pseudo(skb, proto)); \
+ if (!__ret) \
+ skb_gro_incr_csum_unnecessary(skb); \
+ __ret; \
+})
+
+#define skb_gro_checksum_validate(skb, proto, compute_pseudo) \
+ __skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo)
+
+#define skb_gro_checksum_validate_zero_check(skb, proto, check, \
+ compute_pseudo) \
+ __skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo)
+
+#define skb_gro_checksum_simple_validate(skb) \
+ __skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo)
+
+static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb)
+{
+ return (NAPI_GRO_CB(skb)->csum_cnt == 0 &&
+ !NAPI_GRO_CB(skb)->csum_valid);
+}
+
+static inline void __skb_gro_checksum_convert(struct sk_buff *skb,
+ __wsum pseudo)
+{
+ NAPI_GRO_CB(skb)->csum = ~pseudo;
+ NAPI_GRO_CB(skb)->csum_valid = 1;
+}
+
+#define skb_gro_checksum_try_convert(skb, proto, compute_pseudo) \
+do { \
+ if (__skb_gro_checksum_convert_check(skb)) \
+ __skb_gro_checksum_convert(skb, \
+ compute_pseudo(skb, proto)); \
+} while (0)
+
+struct gro_remcsum {
+ int offset;
+ __wsum delta;
+};
+
+static inline void skb_gro_remcsum_init(struct gro_remcsum *grc)
+{
+ grc->offset = 0;
+ grc->delta = 0;
+}
+
+static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr,
+ unsigned int off, size_t hdrlen,
+ int start, int offset,
+ struct gro_remcsum *grc,
+ bool nopartial)
+{
+ __wsum delta;
+ size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start);
+
+ BUG_ON(!NAPI_GRO_CB(skb)->csum_valid);
+
+ if (!nopartial) {
+ NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start;
+ return ptr;
+ }
+
+ ptr = skb_gro_header_fast(skb, off);
+ if (skb_gro_header_hard(skb, off + plen)) {
+ ptr = skb_gro_header_slow(skb, off + plen, off);
+ if (!ptr)
+ return NULL;
+ }
+
+ delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum,
+ start, offset);
+
+ /* Adjust skb->csum since we changed the packet */
+ NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta);
+
+ grc->offset = off + hdrlen + offset;
+ grc->delta = delta;
+
+ return ptr;
+}
+
+static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb,
+ struct gro_remcsum *grc)
+{
+ void *ptr;
+ size_t plen = grc->offset + sizeof(u16);
+
+ if (!grc->delta)
+ return;
+
+ ptr = skb_gro_header_fast(skb, grc->offset);
+ if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) {
+ ptr = skb_gro_header_slow(skb, plen, grc->offset);
+ if (!ptr)
+ return;
+ }
+
+ remcsum_unadjust((__sum16 *)ptr, grc->delta);
+}
+
+#ifdef CONFIG_XFRM_OFFLOAD
+static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush)
+{
+ if (PTR_ERR(pp) != -EINPROGRESS)
+ NAPI_GRO_CB(skb)->flush |= flush;
+}
+static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb,
+ struct sk_buff *pp,
+ int flush,
+ struct gro_remcsum *grc)
+{
+ if (PTR_ERR(pp) != -EINPROGRESS) {
+ NAPI_GRO_CB(skb)->flush |= flush;
+ skb_gro_remcsum_cleanup(skb, grc);
+ skb->remcsum_offload = 0;
+ }
+}
+#else
+static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush)
+{
+ NAPI_GRO_CB(skb)->flush |= flush;
+}
+static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb,
+ struct sk_buff *pp,
+ int flush,
+ struct gro_remcsum *grc)
+{
+ NAPI_GRO_CB(skb)->flush |= flush;
+ skb_gro_remcsum_cleanup(skb, grc);
+ skb->remcsum_offload = 0;
+}
+#endif
INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
struct sk_buff *));
@@ -15,6 +373,14 @@ INDIRECT_CALLABLE_DECLARE(struct sk_buff
struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(int inet_gro_complete(struct sk_buff *, int));
+INDIRECT_CALLABLE_DECLARE(struct sk_buff *udp4_gro_receive(struct list_head *,
+ struct sk_buff *));
+INDIRECT_CALLABLE_DECLARE(int udp4_gro_complete(struct sk_buff *, int));
+
+INDIRECT_CALLABLE_DECLARE(struct sk_buff *udp6_gro_receive(struct list_head *,
+ struct sk_buff *));
+INDIRECT_CALLABLE_DECLARE(int udp6_gro_complete(struct sk_buff *, int));
+
#define indirect_call_gro_receive_inet(cb, f2, f1, head, skb) \
({ \
unlikely(gro_recursion_inc_test(skb)) ? \
@@ -22,4 +388,30 @@ INDIRECT_CALLABLE_DECLARE(int inet_gro_c
INDIRECT_CALL_INET(cb, f2, f1, head, skb); \
})
+struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb,
+ struct udphdr *uh, struct sock *sk);
+int udp_gro_complete(struct sk_buff *skb, int nhoff, udp_lookup_t lookup);
+
+static inline struct udphdr *udp_gro_udphdr(struct sk_buff *skb)
+{
+ struct udphdr *uh;
+ unsigned int hlen, off;
+
+ off = skb_gro_offset(skb);
+ hlen = off + sizeof(*uh);
+ uh = skb_gro_header_fast(skb, off);
+ if (skb_gro_header_hard(skb, hlen))
+ uh = skb_gro_header_slow(skb, hlen, off);
+
+ return uh;
+}
+
+static inline __wsum ip6_gro_compute_pseudo(struct sk_buff *skb, int proto)
+{
+ const struct ipv6hdr *iph = skb_gro_network_header(skb);
+
+ return ~csum_unfold(csum_ipv6_magic(&iph->saddr, &iph->daddr,
+ skb_gro_len(skb), proto, 0));
+}
+
#endif /* _NET_IPV6_GRO_H */
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -549,14 +549,6 @@ static inline void iph_to_flow_copy_v4ad
flow->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
}
-static inline __wsum inet_gro_compute_pseudo(struct sk_buff *skb, int proto)
-{
- const struct iphdr *iph = skb_gro_network_header(skb);
-
- return csum_tcpudp_nofold(iph->saddr, iph->daddr,
- skb_gro_len(skb), proto, 0);
-}
-
/*
* Map a multicast IP onto multicast MAC for type ethernet.
*/
--- a/include/net/ip6_checksum.h
+++ b/include/net/ip6_checksum.h
@@ -43,14 +43,6 @@ static inline __wsum ip6_compute_pseudo(
skb->len, proto, 0));
}
-static inline __wsum ip6_gro_compute_pseudo(struct sk_buff *skb, int proto)
-{
- const struct ipv6hdr *iph = skb_gro_network_header(skb);
-
- return ~csum_unfold(csum_ipv6_magic(&iph->saddr, &iph->daddr,
- skb_gro_len(skb), proto, 0));
-}
-
static __inline__ __sum16 tcp_v6_check(int len,
const struct in6_addr *saddr,
const struct in6_addr *daddr,
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -167,36 +167,12 @@ static inline void udp_csum_pull_header(
typedef struct sock *(*udp_lookup_t)(const struct sk_buff *skb, __be16 sport,
__be16 dport);
-INDIRECT_CALLABLE_DECLARE(struct sk_buff *udp4_gro_receive(struct list_head *,
- struct sk_buff *));
-INDIRECT_CALLABLE_DECLARE(int udp4_gro_complete(struct sk_buff *, int));
-INDIRECT_CALLABLE_DECLARE(struct sk_buff *udp6_gro_receive(struct list_head *,
- struct sk_buff *));
-INDIRECT_CALLABLE_DECLARE(int udp6_gro_complete(struct sk_buff *, int));
INDIRECT_CALLABLE_DECLARE(void udp_v6_early_demux(struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(int udpv6_rcv(struct sk_buff *));
-struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb,
- struct udphdr *uh, struct sock *sk);
-int udp_gro_complete(struct sk_buff *skb, int nhoff, udp_lookup_t lookup);
-
struct sk_buff *__udp_gso_segment(struct sk_buff *gso_skb,
netdev_features_t features, bool is_ipv6);
-static inline struct udphdr *udp_gro_udphdr(struct sk_buff *skb)
-{
- struct udphdr *uh;
- unsigned int hlen, off;
-
- off = skb_gro_offset(skb);
- hlen = off + sizeof(*uh);
- uh = skb_gro_header_fast(skb, off);
- if (skb_gro_header_hard(skb, hlen))
- uh = skb_gro_header_slow(skb, hlen, off);
-
- return uh;
-}
-
/* hash routines shared between UDPv4/6 and UDP-Litev4/6 */
static inline int udp_lib_hash(struct sock *sk)
{
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -64,6 +64,7 @@
#include <net/protocol.h>
#include <net/dst.h>
+#include <net/gro.h>
#include <net/sock.h>
#include <net/checksum.h>
#include <net/ip6_checksum.h>
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -99,6 +99,7 @@
#include <net/route.h>
#include <net/ip_fib.h>
#include <net/inet_connection_sock.h>
+#include <net/gro.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <net/udplite.h>
--- a/net/ipv4/esp4_offload.c
+++ b/net/ipv4/esp4_offload.c
@@ -16,6 +16,7 @@
#include <crypto/authenc.h>
#include <linux/err.h>
#include <linux/module.h>
+#include <net/gro.h>
#include <net/ip.h>
#include <net/xfrm.h>
#include <net/esp.h>
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -9,6 +9,7 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <net/genetlink.h>
+#include <net/gro.h>
#include <net/gue.h>
#include <net/fou.h>
#include <net/ip.h>
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -10,6 +10,7 @@
#include <linux/init.h>
#include <net/protocol.h>
#include <net/gre.h>
+#include <net/gro.h>
static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
netdev_features_t features)
--- a/net/ipv4/tcp_offload.c
+++ b/net/ipv4/tcp_offload.c
@@ -8,6 +8,7 @@
#include <linux/indirect_call_wrapper.h>
#include <linux/skbuff.h>
+#include <net/gro.h>
#include <net/tcp.h>
#include <net/protocol.h>
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -7,6 +7,7 @@
*/
#include <linux/skbuff.h>
+#include <net/gro.h>
#include <net/udp.h>
#include <net/protocol.h>
#include <net/inet_common.h>
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -16,6 +16,7 @@
#include <crypto/authenc.h>
#include <linux/err.h>
#include <linux/module.h>
+#include <net/gro.h>
#include <net/ip.h>
#include <net/xfrm.h>
#include <net/esp.h>
--- a/net/ipv6/tcpv6_offload.c
+++ b/net/ipv6/tcpv6_offload.c
@@ -7,6 +7,7 @@
*/
#include <linux/indirect_call_wrapper.h>
#include <linux/skbuff.h>
+#include <net/gro.h>
#include <net/protocol.h>
#include <net/tcp.h>
#include <net/ip6_checksum.h>
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -13,6 +13,7 @@
#include <net/udp.h>
#include <net/ip6_checksum.h>
#include "ip6_offload.h"
+#include <net/gro.h>
static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
netdev_features_t features)