diff options
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 339 |
1 files changed, 185 insertions, 154 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index a410715bbef8..dbe29b6c9bd6 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -34,6 +34,7 @@ #include <linux/dma-mapping.h> #include <linux/netdev_features.h> #include <linux/sched.h> +#include <linux/sched/clock.h> #include <net/flow_dissector.h> #include <linux/splice.h> #include <linux/in6.h> @@ -108,6 +109,7 @@ * may perform further validation in this case. * GRE: only if the checksum is present in the header. * SCTP: indicates the CRC in SCTP header has been validated. + * FCOE: indicates the CRC in FC frame has been validated. * * skb->csum_level indicates the number of consecutive checksums found in * the packet minus one that have been verified as CHECKSUM_UNNECESSARY. @@ -125,8 +127,10 @@ * packet as seen by netif_rx() and fills out in skb->csum. Meaning, the * hardware doesn't need to parse L3/L4 headers to implement this. * - * Note: Even if device supports only some protocols, but is able to produce - * skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. + * Notes: + * - Even if device supports only some protocols, but is able to produce + * skb->csum, it MUST use CHECKSUM_COMPLETE, not CHECKSUM_UNNECESSARY. + * - CHECKSUM_COMPLETE is not applicable to SCTP and FCoE protocols. * * CHECKSUM_PARTIAL: * @@ -161,14 +165,11 @@ * * NETIF_F_IP_CSUM and NETIF_F_IPV6_CSUM are being deprecated in favor of * NETIF_F_HW_CSUM. New devices should use NETIF_F_HW_CSUM to indicate - * checksum offload capability. If a device has limited checksum capabilities - * (for instance can only perform NETIF_F_IP_CSUM or NETIF_F_IPV6_CSUM as - * described above) a helper function can be called to resolve - * CHECKSUM_PARTIAL. The helper functions are skb_csum_off_chk*. The helper - * function takes a spec argument that describes the protocol layer that is - * supported for checksum offload and can be called for each packet. If a - * packet does not match the specification for offload, skb_checksum_help - * is called to resolve the checksum. + * checksum offload capability. + * skb_csum_hwoffload_help() can be called to resolve CHECKSUM_PARTIAL based + * on network device checksumming capabilities: if a packet does not match + * them, skb_checksum_help or skb_crc32c_help (depending on the value of + * csum_not_inet, see item D.) is called to resolve the checksum. * * CHECKSUM_NONE: * @@ -188,11 +189,13 @@ * * NETIF_F_SCTP_CRC - This feature indicates that a device is capable of * offloading the SCTP CRC in a packet. To perform this offload the stack - * will set ip_summed to CHECKSUM_PARTIAL and set csum_start and csum_offset - * accordingly. Note the there is no indication in the skbuff that the - * CHECKSUM_PARTIAL refers to an SCTP checksum, a driver that supports - * both IP checksum offload and SCTP CRC offload must verify which offload - * is configured for a packet presumably by inspecting packet headers. + * will set set csum_start and csum_offset accordingly, set ip_summed to + * CHECKSUM_PARTIAL and set csum_not_inet to 1, to provide an indication in + * the skbuff that the CHECKSUM_PARTIAL refers to CRC32c. + * A driver that supports both IP checksum offload and SCTP CRC32c offload + * must verify which offload is configured for a packet by testing the + * value of skb->csum_not_inet; skb_crc32c_csum_help is provided to resolve + * CHECKSUM_PARTIAL on skbs where csum_not_inet is set to 1. * * NETIF_F_FCOE_CRC - This feature indicates that a device is capable of * offloading the FCOE CRC in a packet. To perform this offload the stack @@ -249,7 +252,7 @@ struct nf_conntrack { #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) struct nf_bridge_info { - atomic_t use; + refcount_t use; enum { BRNF_PROTO_UNCHANGED, BRNF_PROTO_8021Q, @@ -412,14 +415,15 @@ struct ubuf_info { * the end of the header data, ie. at skb->end. */ struct skb_shared_info { + unsigned short _unused; unsigned char nr_frags; __u8 tx_flags; unsigned short gso_size; /* Warning: this field is not always filled in (UFO)! */ unsigned short gso_segs; - unsigned short gso_type; struct sk_buff *frag_list; struct skb_shared_hwtstamps hwtstamps; + unsigned int gso_type; u32 tskey; __be32 ip6_frag_id; @@ -490,6 +494,8 @@ enum { SKB_GSO_TUNNEL_REMCSUM = 1 << 14, SKB_GSO_SCTP = 1 << 15, + + SKB_GSO_ESP = 1 << 16, }; #if BITS_PER_LONG > 32 @@ -502,66 +508,6 @@ typedef unsigned int sk_buff_data_t; typedef unsigned char *sk_buff_data_t; #endif -/** - * struct skb_mstamp - multi resolution time stamps - * @stamp_us: timestamp in us resolution - * @stamp_jiffies: timestamp in jiffies - */ -struct skb_mstamp { - union { - u64 v64; - struct { - u32 stamp_us; - u32 stamp_jiffies; - }; - }; -}; - -/** - * skb_mstamp_get - get current timestamp - * @cl: place to store timestamps - */ -static inline void skb_mstamp_get(struct skb_mstamp *cl) -{ - u64 val = local_clock(); - - do_div(val, NSEC_PER_USEC); - cl->stamp_us = (u32)val; - cl->stamp_jiffies = (u32)jiffies; -} - -/** - * skb_mstamp_delta - compute the difference in usec between two skb_mstamp - * @t1: pointer to newest sample - * @t0: pointer to oldest sample - */ -static inline u32 skb_mstamp_us_delta(const struct skb_mstamp *t1, - const struct skb_mstamp *t0) -{ - s32 delta_us = t1->stamp_us - t0->stamp_us; - u32 delta_jiffies = t1->stamp_jiffies - t0->stamp_jiffies; - - /* If delta_us is negative, this might be because interval is too big, - * or local_clock() drift is too big : fallback using jiffies. - */ - if (delta_us <= 0 || - delta_jiffies >= (INT_MAX / (USEC_PER_SEC / HZ))) - - delta_us = jiffies_to_usecs(delta_jiffies); - - return delta_us; -} - -static inline bool skb_mstamp_after(const struct skb_mstamp *t1, - const struct skb_mstamp *t0) -{ - s32 diff = t1->stamp_jiffies - t0->stamp_jiffies; - - if (!diff) - diff = t1->stamp_us - t0->stamp_us; - return diff > 0; -} - /** * struct sk_buff - socket buffer * @next: Next buffer in list @@ -585,20 +531,22 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1, * @cloned: Head may be cloned (check refcnt to be sure) * @ip_summed: Driver fed us an IP checksum * @nohdr: Payload reference only, must not modify header - * @nfctinfo: Relationship of this skb to the connection * @pkt_type: Packet class * @fclone: skbuff clone status * @ipvs_property: skbuff is owned by ipvs + * @tc_skip_classify: do not classify packet. set by IFB device + * @tc_at_ingress: used within tc_classify to distinguish in/egress + * @tc_redirected: packet was redirected by a tc action + * @tc_from_ingress: if tc_redirected, tc_at_ingress at time of redirect * @peeked: this packet has been seen already, so stats have been * done for it, don't do them again * @nf_trace: netfilter packet trace flag * @protocol: Packet protocol from driver * @destructor: Destruct function - * @nfct: Associated connection, if any + * @_nfct: Associated connection, if any (with nfctinfo bits) * @nf_bridge: Saved data about a bridged frame - see br_netfilter.c * @skb_iif: ifindex of device we arrived on * @tc_index: Traffic control index - * @tc_verd: traffic control verdict * @hash: the packet hash * @queue_mapping: Queue mapping for multiqueue devices * @xmit_more: More SKBs are pending for this queue @@ -610,6 +558,8 @@ static inline bool skb_mstamp_after(const struct skb_mstamp *t1, * @wifi_acked_valid: wifi_acked was set * @wifi_acked: whether frame was acked on wifi or not * @no_fcs: Request NIC to treat last 4 bytes as Ethernet FCS + * @csum_not_inet: use CRC32c to resolve CHECKSUM_PARTIAL + * @dst_pending_confirm: need to confirm neighbour * @napi_id: id of the NAPI struct this skb came from * @secmark: security marking * @mark: Generic packet mark @@ -639,7 +589,7 @@ struct sk_buff { union { ktime_t tstamp; - struct skb_mstamp skb_mstamp; + u64 skb_mstamp; }; }; struct rb_node rbnode; /* used in netem & tcp stack */ @@ -668,7 +618,7 @@ struct sk_buff { struct sec_path *sp; #endif #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) - struct nf_conntrack *nfct; + unsigned long _nfct; #endif #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) struct nf_bridge_info *nf_bridge; @@ -721,7 +671,6 @@ struct sk_buff { __u8 pkt_type:3; __u8 pfmemalloc:1; __u8 ignore_df:1; - __u8 nfctinfo:3; __u8 nf_trace:1; __u8 ip_summed:2; @@ -738,8 +687,9 @@ struct sk_buff { __u8 csum_valid:1; __u8 csum_complete_sw:1; __u8 csum_level:2; - __u8 csum_bad:1; + __u8 csum_not_inet:1; + __u8 dst_pending_confirm:1; #ifdef CONFIG_IPV6_NDISC_NODETYPE __u8 ndisc_nodetype:2; #endif @@ -749,13 +699,15 @@ struct sk_buff { #ifdef CONFIG_NET_SWITCHDEV __u8 offload_fwd_mark:1; #endif - /* 2, 4 or 5 bit hole */ +#ifdef CONFIG_NET_CLS_ACT + __u8 tc_skip_classify:1; + __u8 tc_at_ingress:1; + __u8 tc_redirected:1; + __u8 tc_from_ingress:1; +#endif #ifdef CONFIG_NET_SCHED __u16 tc_index; /* traffic control index */ -#ifdef CONFIG_NET_CLS_ACT - __u16 tc_verd; /* traffic control verdict */ -#endif #endif union { @@ -809,7 +761,7 @@ struct sk_buff { unsigned char *head, *data; unsigned int truesize; - atomic_t users; + refcount_t users; }; #ifdef __KERNEL__ @@ -836,6 +788,7 @@ static inline bool skb_pfmemalloc(const struct sk_buff *skb) #define SKB_DST_NOREF 1UL #define SKB_DST_PTRMASK ~(SKB_DST_NOREF) +#define SKB_NFCT_PTRMASK ~(7UL) /** * skb_dst - returns skb dst_entry * @skb: buffer @@ -905,10 +858,34 @@ static inline bool skb_pkt_type_ok(u32 ptype) return ptype <= PACKET_OTHERHOST; } +static inline unsigned int skb_napi_id(const struct sk_buff *skb) +{ +#ifdef CONFIG_NET_RX_BUSY_POLL + return skb->napi_id; +#else + return 0; +#endif +} + +/* decrement the reference count and return true if we can free the skb */ +static inline bool skb_unref(struct sk_buff *skb) +{ + if (unlikely(!skb)) + return false; + if (likely(refcount_read(&skb->users) == 1)) + smp_rmb(); + else if (likely(!refcount_dec_and_test(&skb->users))) + return false; + + return true; +} + +void skb_release_head_state(struct sk_buff *skb); void kfree_skb(struct sk_buff *skb); void kfree_skb_list(struct sk_buff *segs); void skb_tx_error(struct sk_buff *skb); void consume_skb(struct sk_buff *skb); +void consume_stateless_skb(struct sk_buff *skb); void __kfree_skb(struct sk_buff *skb); extern struct kmem_cache *skbuff_head_cache; @@ -938,7 +915,7 @@ struct sk_buff_fclones { struct sk_buff skb2; - atomic_t fclone_ref; + refcount_t fclone_ref; }; /** @@ -958,7 +935,7 @@ static inline bool skb_fclone_busy(const struct sock *sk, fclones = container_of(skb, struct sk_buff_fclones, skb1); return skb->fclone == SKB_FCLONE_ORIG && - atomic_read(&fclones->fclone_ref) > 1 && + refcount_read(&fclones->fclone_ref) > 1 && fclones->skb2.sk == sk; } @@ -991,10 +968,10 @@ struct sk_buff *skb_realloc_headroom(struct sk_buff *skb, unsigned int headroom); struct sk_buff *skb_copy_expand(const struct sk_buff *skb, int newheadroom, int newtailroom, gfp_t priority); -int skb_to_sgvec_nomark(struct sk_buff *skb, struct scatterlist *sg, - int offset, int len); -int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, - int len); +int __must_check skb_to_sgvec_nomark(struct sk_buff *skb, struct scatterlist *sg, + int offset, int len); +int __must_check skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, + int offset, int len); int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer); int skb_pad(struct sk_buff *skb, int pad); #define dev_kfree_skb(a) consume_skb(a) @@ -1306,7 +1283,7 @@ static inline struct sk_buff *skb_queue_prev(const struct sk_buff_head *list, */ static inline struct sk_buff *skb_get(struct sk_buff *skb) { - atomic_inc(&skb->users); + refcount_inc(&skb->users); return skb; } @@ -1407,7 +1384,7 @@ static inline void __skb_header_release(struct sk_buff *skb) */ static inline int skb_shared(const struct sk_buff *skb) { - return atomic_read(&skb->users) != 1; + return refcount_read(&skb->users) != 1; } /** @@ -1916,41 +1893,87 @@ static inline void skb_set_tail_pointer(struct sk_buff *skb, const int offset) /* * Add data to an sk_buff */ -unsigned char *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len); -unsigned char *skb_put(struct sk_buff *skb, unsigned int len); -static inline unsigned char *__skb_put(struct sk_buff *skb, unsigned int len) +void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len); +void *skb_put(struct sk_buff *skb, unsigned int len); +static inline void *__skb_put(struct sk_buff *skb, unsigned int len) { - unsigned char *tmp = skb_tail_pointer(skb); + void *tmp = skb_tail_pointer(skb); SKB_LINEAR_ASSERT(skb); skb->tail += len; skb->len += len; return tmp; } -unsigned char *skb_push(struct sk_buff *skb, unsigned int len); -static inline unsigned char *__skb_push(struct sk_buff *skb, unsigned int len) +static inline void *__skb_put_zero(struct sk_buff *skb, unsigned int len) +{ + void *tmp = __skb_put(skb, len); + + memset(tmp, 0, len); + return tmp; +} + +static inline void *__skb_put_data(struct sk_buff *skb, const void *data, + unsigned int len) +{ + void *tmp = __skb_put(skb, len); + + memcpy(tmp, data, len); + return tmp; +} + +static inline void __skb_put_u8(struct sk_buff *skb, u8 val) +{ + *(u8 *)__skb_put(skb, 1) = val; +} + +static inline void *skb_put_zero(struct sk_buff *skb, unsigned int len) +{ + void *tmp = skb_put(skb, len); + + memset(tmp, 0, len); + + return tmp; +} + +static inline void *skb_put_data(struct sk_buff *skb, const void *data, + unsigned int len) +{ + void *tmp = skb_put(skb, len); + + memcpy(tmp, data, len); + + return tmp; +} + +static inline void skb_put_u8(struct sk_buff *skb, u8 val) +{ + *(u8 *)skb_put(skb, 1) = val; +} + +void *skb_push(struct sk_buff *skb, unsigned int len); +static inline void *__skb_push(struct sk_buff *skb, unsigned int len) { skb->data -= len; skb->len += len; return skb->data; } -unsigned char *skb_pull(struct sk_buff *skb, unsigned int len); -static inline unsigned char *__skb_pull(struct sk_buff *skb, unsigned int len) +void *skb_pull(struct sk_buff *skb, unsigned int len); +static inline void *__skb_pull(struct sk_buff *skb, unsigned int len) { skb->len -= len; BUG_ON(skb->len < skb->data_len); return skb->data += len; } -static inline unsigned char *skb_pull_inline(struct sk_buff *skb, unsigned int len) +static inline void *skb_pull_inline(struct sk_buff *skb, unsigned int len) { return unlikely(len > skb->len) ? NULL : __skb_pull(skb, len); } -unsigned char *__pskb_pull_tail(struct sk_buff *skb, int delta); +void *__pskb_pull_tail(struct sk_buff *skb, int delta); -static inline unsigned char *__pskb_pull(struct sk_buff *skb, unsigned int len) +static inline void *__pskb_pull(struct sk_buff *skb, unsigned int len) { if (len > skb_headlen(skb) && !__pskb_pull_tail(skb, len - skb_headlen(skb))) @@ -1959,7 +1982,7 @@ static inline unsigned char *__pskb_pull(struct sk_buff *skb, unsigned int len) return skb->data += len; } -static inline unsigned char *pskb_pull(struct sk_buff *skb, unsigned int len) +static inline void *pskb_pull(struct sk_buff *skb, unsigned int len) { return unlikely(len > skb->len) ? NULL : __pskb_pull(skb, len); } @@ -2178,6 +2201,16 @@ static inline unsigned char *skb_mac_header(const struct sk_buff *skb) return skb->head + skb->mac_header; } +static inline int skb_mac_offset(const struct sk_buff *skb) +{ + return skb_mac_header(skb) - skb->data; +} + +static inline u32 skb_mac_header_len(const struct sk_buff *skb) +{ + return skb->network_header - skb->mac_header; +} + static inline int skb_mac_header_was_set(const struct sk_buff *skb) { return skb->mac_header != (typeof(skb->mac_header))~0U; @@ -2676,7 +2709,7 @@ bool skb_page_frag_refill(unsigned int sz, struct page_frag *pfrag, gfp_t prio); * @offset: the offset within the fragment (starting at the * fragment's own offset) * @size: the number of bytes to map - * @dir: the direction of the mapping (%PCI_DMA_*) + * @dir: the direction of the mapping (``PCI_DMA_*``) * * Maps the page associated with @frag to @device. */ @@ -2937,7 +2970,7 @@ static inline void skb_postpush_rcsum(struct sk_buff *skb, __skb_postpush_rcsum(skb, start, len, 0); } -unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len); +void *skb_pull_rcsum(struct sk_buff *skb, unsigned int len); /** * skb_push_rcsum - push skb and update receive checksum @@ -2950,8 +2983,7 @@ unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len); * that the checksum difference is zero (e.g., a valid IP header) * or you are setting ip_summed to CHECKSUM_NONE. */ -static inline unsigned char *skb_push_rcsum(struct sk_buff *skb, - unsigned int len) +static inline void *skb_push_rcsum(struct sk_buff *skb, unsigned int len) { skb_push(skb, len); skb_postpush_rcsum(skb, skb->data, len); @@ -3041,6 +3073,13 @@ static inline void skb_frag_list_init(struct sk_buff *skb) int __skb_wait_for_more_packets(struct sock *sk, int *err, long *timeo_p, const struct sk_buff *skb); +struct sk_buff *__skb_try_recv_from_queue(struct sock *sk, + struct sk_buff_head *queue, + unsigned int flags, + void (*destructor)(struct sock *sk, + struct sk_buff *skb), + int *peeked, int *off, int *err, + struct sk_buff **last); struct sk_buff *__skb_try_recv_datagram(struct sock *sk, unsigned flags, void (*destructor)(struct sock *sk, struct sk_buff *skb), @@ -3101,7 +3140,7 @@ struct sk_buff *pskb_extract(struct sk_buff *skb, int off, int to_copy, static inline int memcpy_from_msg(void *data, struct msghdr *msg, int len) { - return copy_from_iter(data, len, &msg->msg_iter) == len ? 0 : -EFAULT; + return copy_from_iter_full(data, len, &msg->msg_iter) ? 0 : -EFAULT; } static inline int memcpy_to_msg(struct msghdr *msg, void *data, int len) @@ -3114,6 +3153,8 @@ struct skb_checksum_ops { __wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len); }; +extern const struct skb_checksum_ops *crc32c_csum_stub __read_mostly; + __wsum __skb_checksum(const struct sk_buff *skb, int offset, int len, __wsum csum, const struct skb_checksum_ops *ops); __wsum skb_checksum(const struct sk_buff *skb, int offset, int len, @@ -3283,13 +3324,6 @@ void __skb_tstamp_tx(struct sk_buff *orig_skb, void skb_tstamp_tx(struct sk_buff *orig_skb, struct skb_shared_hwtstamps *hwtstamps); -static inline void sw_tx_timestamp(struct sk_buff *skb) -{ - if (skb_shinfo(skb)->tx_flags & SKBTX_SW_TSTAMP && - !(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) - skb_tstamp_tx(skb, NULL); -} - /** * skb_tx_timestamp() - Driver hook for transmit timestamping * @@ -3305,7 +3339,8 @@ static inline void sw_tx_timestamp(struct sk_buff *skb) static inline void skb_tx_timestamp(struct sk_buff *skb) { skb_clone_tx_timestamp(skb); - sw_tx_timestamp(skb); + if (skb_shinfo(skb)->tx_flags & SKBTX_SW_TSTAMP) + skb_tstamp_tx(skb, NULL); } /** @@ -3371,21 +3406,6 @@ static inline void __skb_incr_checksum_unnecessary(struct sk_buff *skb) } } -static inline void __skb_mark_checksum_bad(struct sk_buff *skb) -{ - /* Mark current checksum as bad (typically called from GRO - * path). In the case that ip_summed is CHECKSUM_NONE - * this must be the first checksum encountered in the packet. - * When ip_summed is CHECKSUM_UNNECESSARY, this is the first - * checksum after the last one validated. For UDP, a zero - * checksum can not be marked as bad. - */ - - if (skb->ip_summed == CHECKSUM_NONE || - skb->ip_summed == CHECKSUM_UNNECESSARY) - skb->csum_bad = 1; -} - /* Check if we need to perform checksum complete validation. * * Returns true if checksum complete is needed, false otherwise @@ -3439,9 +3459,6 @@ static inline __sum16 __skb_checksum_validate_complete(struct sk_buff *skb, skb->csum_valid = 1; return 0; } - } else if (skb->csum_bad) { - /* ip_summed == CHECKSUM_NONE in this case */ - return (__force __sum16)1; } skb->csum = psum; @@ -3501,8 +3518,7 @@ static inline __wsum null_compute_pseudo(struct sk_buff *skb, int proto) static inline bool __skb_checksum_convert_check(struct sk_buff *skb) { - return (skb->ip_summed == CHECKSUM_NONE && - skb->csum_valid && !skb->csum_bad); + return (skb->ip_summed == CHECKSUM_NONE && skb->csum_valid); } static inline void __skb_checksum_convert(struct sk_buff *skb, @@ -3553,6 +3569,15 @@ static inline void skb_remcsum_process(struct sk_buff *skb, void *ptr, skb->csum = csum_add(skb->csum, delta); } +static inline struct nf_conntrack *skb_nfct(const struct sk_buff *skb) +{ +#if IS_ENABLED(CONFIG_NF_CONNTRACK) + return (void *)(skb->_nfct & SKB_NFCT_PTRMASK); +#else + return NULL; +#endif +} + #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) void nf_conntrack_destroy(struct nf_conntrack *nfct); static inline void nf_conntrack_put(struct nf_conntrack *nfct) @@ -3569,20 +3594,20 @@ static inline void nf_conntrack_get(struct nf_conntrack *nfct) #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) static inline void nf_bridge_put(struct nf_bridge_info *nf_bridge) { - if (nf_bridge && atomic_dec_and_test(&nf_bridge->use)) + if (nf_bridge && refcount_dec_and_test(&nf_bridge->use)) kfree(nf_bridge); } static inline void nf_bridge_get(struct nf_bridge_info *nf_bridge) { if (nf_bridge) - atomic_inc(&nf_bridge->use); + refcount_inc(&nf_bridge->use); } #endif /* CONFIG_BRIDGE_NETFILTER */ static inline void nf_reset(struct sk_buff *skb) { #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) - nf_conntrack_put(skb->nfct); - skb->nfct = NULL; + nf_conntrack_put(skb_nfct(skb)); + skb->_nfct = 0; #endif #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) nf_bridge_put(skb->nf_bridge); @@ -3602,10 +3627,8 @@ static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src, bool copy) { #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) - dst->nfct = src->nfct; - nf_conntrack_get(src->nfct); - if (copy) - dst->nfctinfo = src->nfctinfo; + dst->_nfct = src->_nfct; + nf_conntrack_get(skb_nfct(src)); #endif #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) dst->nf_bridge = src->nf_bridge; @@ -3620,7 +3643,7 @@ static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src, static inline void nf_copy(struct sk_buff *dst, const struct sk_buff *src) { #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) - nf_conntrack_put(dst->nfct); + nf_conntrack_put(skb_nfct(dst)); #endif #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) nf_bridge_put(dst->nf_bridge); @@ -3652,9 +3675,7 @@ static inline bool skb_irq_freeable(const struct sk_buff *skb) #if IS_ENABLED(CONFIG_XFRM) !skb->sp && #endif -#if IS_ENABLED(CONFIG_NF_CONNTRACK) - !skb->nfct && -#endif + !skb_nfct(skb) && !skb->_skb_refdst && !skb_has_frag_list(skb); } @@ -3689,6 +3710,16 @@ static inline bool skb_rx_queue_recorded(const struct sk_buff *skb) return skb->queue_mapping != 0; } +static inline void skb_set_dst_pending_confirm(struct sk_buff *skb, u32 val) +{ + skb->dst_pending_confirm = val; +} + +static inline bool skb_get_dst_pending_confirm(const struct sk_buff *skb) +{ + return skb->dst_pending_confirm != 0; +} + static inline struct sec_path *skb_sec_path(struct sk_buff *skb) { #ifdef CONFIG_XFRM |