1 files changed, 179 insertions, 148 deletions

diff --git a/net/core/gro.c b/net/core/gro.c
index 506f83d715f8..76f9c3712422 100644
--- a/net/core/gro.c
+++ b/net/core/gro.c
@@ -1,18 +1,14 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
+#include <net/psp.h>
 #include <net/gro.h>
 #include <net/dst_metadata.h>
 #include <net/busy_poll.h>
 #include <trace/events/net.h>
+#include <linux/skbuff_ref.h>
 
 #define MAX_GRO_SKBS 8
 
-/* This should be increased if a protocol with a bigger head is added. */
-#define GRO_MAX_HEAD (MAX_HEADER + 128)
-
 static DEFINE_SPINLOCK(offload_lock);
-static struct list_head offload_base __read_mostly = LIST_HEAD_INIT(offload_base);
-/* Maximum number of GRO_NORMAL skbs to batch up for list-RX */
-int gro_normal_batch __read_mostly = 8;
 
 /**
  *	dev_add_offload - register offload handlers
@@ -31,7 +27,7 @@ void dev_add_offload(struct packet_offload *po)
 	struct packet_offload *elem;
 
 	spin_lock(&offload_lock);
-	list_for_each_entry(elem, &offload_base, list) {
+	list_for_each_entry(elem, &net_hotdata.offload_base, list) {
 		if (po->priority < elem->priority)
 			break;
 	}
@@ -55,7 +51,7 @@ EXPORT_SYMBOL(dev_add_offload);
  */
 static void __dev_remove_offload(struct packet_offload *po)
 {
-	struct list_head *head = &offload_base;
+	struct list_head *head = &net_hotdata.offload_base;
 	struct packet_offload *po1;
 
 	spin_lock(&offload_lock);
@@ -92,63 +88,6 @@ void dev_remove_offload(struct packet_offload *po)
 }
 EXPORT_SYMBOL(dev_remove_offload);
 
-/**
- *	skb_eth_gso_segment - segmentation handler for ethernet protocols.
- *	@skb: buffer to segment
- *	@features: features for the output path (see dev->features)
- *	@type: Ethernet Protocol ID
- */
-struct sk_buff *skb_eth_gso_segment(struct sk_buff *skb,
-				    netdev_features_t features, __be16 type)
-{
-	struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT);
-	struct packet_offload *ptype;
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(ptype, &offload_base, list) {
-		if (ptype->type == type && ptype->callbacks.gso_segment) {
-			segs = ptype->callbacks.gso_segment(skb, features);
-			break;
-		}
-	}
-	rcu_read_unlock();
-
-	return segs;
-}
-EXPORT_SYMBOL(skb_eth_gso_segment);
-
-/**
- *	skb_mac_gso_segment - mac layer segmentation handler.
- *	@skb: buffer to segment
- *	@features: features for the output path (see dev->features)
- */
-struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
-				    netdev_features_t features)
-{
-	struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT);
-	struct packet_offload *ptype;
-	int vlan_depth = skb->mac_len;
-	__be16 type = skb_network_protocol(skb, &vlan_depth);
-
-	if (unlikely(!type))
-		return ERR_PTR(-EINVAL);
-
-	__skb_pull(skb, vlan_depth);
-
-	rcu_read_lock();
-	list_for_each_entry_rcu(ptype, &offload_base, list) {
-		if (ptype->type == type && ptype->callbacks.gso_segment) {
-			segs = ptype->callbacks.gso_segment(skb, features);
-			break;
-		}
-	}
-	rcu_read_unlock();
-
-	__skb_push(skb, skb->data - skb_mac_header(skb));
-
-	return segs;
-}
-EXPORT_SYMBOL(skb_mac_gso_segment);
 
 int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb)
 {
@@ -157,21 +96,27 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb)
 	unsigned int headlen = skb_headlen(skb);
 	unsigned int len = skb_gro_len(skb);
 	unsigned int delta_truesize;
-	unsigned int gro_max_size;
 	unsigned int new_truesize;
 	struct sk_buff *lp;
 	int segs;
 
-	/* pairs with WRITE_ONCE() in netif_set_gro_max_size() */
-	gro_max_size = READ_ONCE(p->dev->gro_max_size);
+	/* Do not splice page pool based packets w/ non-page pool
+	 * packets. This can result in reference count issues as page
+	 * pool pages will not decrement the reference count and will
+	 * instead be immediately returned to the pool or have frag
+	 * count decremented.
+	 */
+	if (p->pp_recycle != skb->pp_recycle)
+		return -ETOOMANYREFS;
 
-	if (unlikely(p->len + len >= gro_max_size || NAPI_GRO_CB(skb)->flush))
+	if (unlikely(p->len + len >= netif_get_gro_max_size(p->dev, p) ||
+		     NAPI_GRO_CB(skb)->flush))
 		return -E2BIG;
 
 	if (unlikely(p->len + len >= GRO_LEGACY_MAX_SIZE)) {
-		if (p->protocol != htons(ETH_P_IPV6) ||
-		    skb_headroom(p) < sizeof(struct hop_jumbo_hdr) ||
-		    ipv6_hdr(p)->nexthdr != IPPROTO_TCP ||
+		if (NAPI_GRO_CB(skb)->proto != IPPROTO_TCP ||
+		    (p->protocol == htons(ETH_P_IPV6) &&
+		     skb_headroom(p) < sizeof(struct hop_jumbo_hdr)) ||
 		    p->encapsulation)
 			return -E2BIG;
 	}
@@ -228,9 +173,7 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb)
 
 		pinfo->nr_frags = nr_frags + 1 + skbinfo->nr_frags;
 
-		__skb_frag_set_page(frag, page);
-		skb_frag_off_set(frag, first_offset);
-		skb_frag_size_set(frag, first_size);
+		skb_frag_fill_page_desc(frag, page, first_offset, first_size);
 
 		memcpy(frag + 1, skbinfo->frags, sizeof(*frag) * skbinfo->nr_frags);
 		/* We dont need to clear skbinfo->nr_frags here */
@@ -243,8 +186,9 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb)
 	}
 
 merge:
-	/* sk owenrship - if any - completely transferred to the aggregated packet */
+	/* sk ownership - if any - completely transferred to the aggregated packet */
 	skb->destructor = NULL;
+	skb->sk = NULL;
 	delta_truesize = skb->truesize;
 	if (offset > headlen) {
 		unsigned int eat = offset - headlen;
@@ -280,12 +224,38 @@ done:
 	return 0;
 }
 
+int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb)
+{
+	if (unlikely(p->len + skb->len >= 65536))
+		return -E2BIG;
+
+	if (NAPI_GRO_CB(p)->last == p)
+		skb_shinfo(p)->frag_list = skb;
+	else
+		NAPI_GRO_CB(p)->last->next = skb;
+
+	skb_pull(skb, skb_gro_offset(skb));
+
+	NAPI_GRO_CB(p)->last = skb;
+	NAPI_GRO_CB(p)->count++;
+	p->data_len += skb->len;
+
+	/* sk ownership - if any - completely transferred to the aggregated packet */
+	skb->destructor = NULL;
+	skb->sk = NULL;
+	p->truesize += skb->truesize;
+	p->len += skb->len;
+
+	NAPI_GRO_CB(skb)->same_flow = 1;
+
+	return 0;
+}
 
-static void napi_gro_complete(struct napi_struct *napi, struct sk_buff *skb)
+static void gro_complete(struct gro_node *gro, struct sk_buff *skb)
 {
+	struct list_head *head = &net_hotdata.offload_base;
 	struct packet_offload *ptype;
 	__be16 type = skb->protocol;
-	struct list_head *head = &offload_base;
 	int err = -ENOENT;
 
 	BUILD_BUG_ON(sizeof(struct napi_gro_cb) > sizeof(skb->cb));
@@ -314,43 +284,61 @@ static void napi_gro_complete(struct napi_struct *napi, struct sk_buff *skb)
 	}
 
 out:
-	gro_normal_one(napi, skb, NAPI_GRO_CB(skb)->count);
+	gro_normal_one(gro, skb, NAPI_GRO_CB(skb)->count);
 }
 
-static void __napi_gro_flush_chain(struct napi_struct *napi, u32 index,
-				   bool flush_old)
+static void __gro_flush_chain(struct gro_node *gro, u32 index, bool flush_old)
 {
-	struct list_head *head = &napi->gro_hash[index].list;
+	struct list_head *head = &gro->hash[index].list;
 	struct sk_buff *skb, *p;
 
 	list_for_each_entry_safe_reverse(skb, p, head, list) {
 		if (flush_old && NAPI_GRO_CB(skb)->age == jiffies)
 			return;
 		skb_list_del_init(skb);
-		napi_gro_complete(napi, skb);
-		napi->gro_hash[index].count--;
+		gro_complete(gro, skb);
+		gro->hash[index].count--;
 	}
 
-	if (!napi->gro_hash[index].count)
-		__clear_bit(index, &napi->gro_bitmask);
+	if (!gro->hash[index].count)
+		__clear_bit(index, &gro->bitmask);
 }
 
-/* napi->gro_hash[].list contains packets ordered by age.
+/*
+ * gro->hash[].list contains packets ordered by age.
  * youngest packets at the head of it.
  * Complete skbs in reverse order to reduce latencies.
  */
-void napi_gro_flush(struct napi_struct *napi, bool flush_old)
+void __gro_flush(struct gro_node *gro, bool flush_old)
 {
-	unsigned long bitmask = napi->gro_bitmask;
+	unsigned long bitmask = gro->bitmask;
 	unsigned int i, base = ~0U;
 
 	while ((i = ffs(bitmask)) != 0) {
 		bitmask >>= i;
 		base += i;
-		__napi_gro_flush_chain(napi, base, flush_old);
+		__gro_flush_chain(gro, base, flush_old);
 	}
 }
-EXPORT_SYMBOL(napi_gro_flush);
+EXPORT_SYMBOL(__gro_flush);
+
+static unsigned long gro_list_prepare_tc_ext(const struct sk_buff *skb,
+					     const struct sk_buff *p,
+					     unsigned long diffs)
+{
+#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
+	struct tc_skb_ext *skb_ext;
+	struct tc_skb_ext *p_ext;
+
+	skb_ext = skb_ext_find(skb, TC_SKB_EXT);
+	p_ext = skb_ext_find(p, TC_SKB_EXT);
+
+	diffs |= (!!p_ext) ^ (!!skb_ext);
+	if (!diffs && unlikely(skb_ext))
+		diffs |= p_ext->chain ^ skb_ext->chain;
+#endif
+	return diffs;
+}
 
 static void gro_list_prepare(const struct list_head *head,
 			     const struct sk_buff *skb)
@@ -362,8 +350,6 @@ static void gro_list_prepare(const struct list_head *head,
 	list_for_each_entry(p, head, list) {
 		unsigned long diffs;
 
-		NAPI_GRO_CB(p)->flush = 0;
-
 		if (hash != skb_get_hash_raw(p)) {
 			NAPI_GRO_CB(p)->same_flow = 0;
 			continue;
@@ -380,29 +366,18 @@ static void gro_list_prepare(const struct list_head *head,
 				       skb_mac_header(skb),
 				       maclen);
 
-		/* in most common scenarions 'slow_gro' is 0
+		/* in most common scenarios 'slow_gro' is 0
 		 * otherwise we are already on some slower paths
 		 * either skip all the infrequent tests altogether or
 		 * avoid trying too hard to skip each of them individually
 		 */
 		if (!diffs && unlikely(skb->slow_gro | p->slow_gro)) {
-#if IS_ENABLED(CONFIG_SKB_EXTENSIONS) && IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
-			struct tc_skb_ext *skb_ext;
-			struct tc_skb_ext *p_ext;
-#endif
-
 			diffs |= p->sk != skb->sk;
 			diffs |= skb_metadata_dst_cmp(p, skb);
 			diffs |= skb_get_nfct(p) ^ skb_get_nfct(skb);
 
-#if IS_ENABLED(CONFIG_SKB_EXTENSIONS) && IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
-			skb_ext = skb_ext_find(skb, TC_SKB_EXT);
-			p_ext = skb_ext_find(p, TC_SKB_EXT);
-
-			diffs |= (!!p_ext) ^ (!!skb_ext);
-			if (!diffs && unlikely(skb_ext))
-				diffs |= p_ext->chain ^ skb_ext->chain;
-#endif
+			diffs |= gro_list_prepare_tc_ext(skb, p, diffs);
+			diffs |= __psp_skb_coalesce_diff(skb, p, diffs);
 		}
 
 		NAPI_GRO_CB(p)->same_flow = !diffs;
@@ -411,14 +386,22 @@ static void gro_list_prepare(const struct list_head *head,
 
 static inline void skb_gro_reset_offset(struct sk_buff *skb, u32 nhoff)
 {
-	const struct skb_shared_info *pinfo = skb_shinfo(skb);
-	const skb_frag_t *frag0 = &pinfo->frags[0];
+	const struct skb_shared_info *pinfo;
+	const skb_frag_t *frag0;
+	unsigned int headlen;
 
+	NAPI_GRO_CB(skb)->network_offset = 0;
 	NAPI_GRO_CB(skb)->data_offset = 0;
-	NAPI_GRO_CB(skb)->frag0 = NULL;
-	NAPI_GRO_CB(skb)->frag0_len = 0;
+	headlen = skb_headlen(skb);
+	NAPI_GRO_CB(skb)->frag0 = skb->data;
+	NAPI_GRO_CB(skb)->frag0_len = headlen;
+	if (headlen)
+		return;
+
+	pinfo = skb_shinfo(skb);
+	frag0 = &pinfo->frags[0];
 
-	if (!skb_headlen(skb) && pinfo->nr_frags &&
+	if (pinfo->nr_frags && skb_frag_page(frag0) &&
 	    !PageHighMem(skb_frag_page(frag0)) &&
 	    (!NET_IP_ALIGN || !((skb_frag_off(frag0) + nhoff) & 3))) {
 		NAPI_GRO_CB(skb)->frag0 = skb_frag_address(frag0);
@@ -449,7 +432,15 @@ static void gro_pull_from_frag0(struct sk_buff *skb, int grow)
 	}
 }
 
-static void gro_flush_oldest(struct napi_struct *napi, struct list_head *head)
+static void gro_try_pull_from_frag0(struct sk_buff *skb)
+{
+	int grow = skb_gro_offset(skb) - skb_headlen(skb);
+
+	if (grow > 0)
+		gro_pull_from_frag0(skb, grow);
+}
+
+static void gro_flush_oldest(struct gro_node *gro, struct list_head *head)
 {
 	struct sk_buff *oldest;
 
@@ -465,20 +456,20 @@ static void gro_flush_oldest(struct napi_struct *napi, struct list_head *head)
 	 * SKB to the chain.
 	 */
 	skb_list_del_init(oldest);
-	napi_gro_complete(napi, oldest);
+	gro_complete(gro, oldest);
 }
 
-static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+static enum gro_result dev_gro_receive(struct gro_node *gro,
+				       struct sk_buff *skb)
 {
 	u32 bucket = skb_get_hash_raw(skb) & (GRO_HASH_BUCKETS - 1);
-	struct gro_list *gro_list = &napi->gro_hash[bucket];
-	struct list_head *head = &offload_base;
+	struct list_head *head = &net_hotdata.offload_base;
+	struct gro_list *gro_list = &gro->hash[bucket];
 	struct packet_offload *ptype;
 	__be16 type = skb->protocol;
 	struct sk_buff *pp = NULL;
 	enum gro_result ret;
 	int same_flow;
-	int grow;
 
 	if (netif_elide_gro(skb->dev))
 		goto normal;
@@ -501,7 +492,6 @@ found_ptype:
 					sizeof(u32))); /* Avoid slow unaligned acc */
 	*(u32 *)&NAPI_GRO_CB(skb)->zeroed = 0;
 	NAPI_GRO_CB(skb)->flush = skb_has_frag_list(skb);
-	NAPI_GRO_CB(skb)->is_atomic = 1;
 	NAPI_GRO_CB(skb)->count = 1;
 	if (unlikely(skb_is_gso(skb))) {
 		NAPI_GRO_CB(skb)->count = skb_shinfo(skb)->gso_segs;
@@ -538,7 +528,7 @@ found_ptype:
 
 	if (pp) {
 		skb_list_del_init(pp);
-		napi_gro_complete(napi, pp);
+		gro_complete(gro, pp);
 		gro_list->count--;
 	}
 
@@ -549,39 +539,37 @@ found_ptype:
 		goto normal;
 
 	if (unlikely(gro_list->count >= MAX_GRO_SKBS))
-		gro_flush_oldest(napi, &gro_list->list);
+		gro_flush_oldest(gro, &gro_list->list);
 	else
 		gro_list->count++;
 
+	/* Must be called before setting NAPI_GRO_CB(skb)->{age|last} */
+	gro_try_pull_from_frag0(skb);
 	NAPI_GRO_CB(skb)->age = jiffies;
 	NAPI_GRO_CB(skb)->last = skb;
 	if (!skb_is_gso(skb))
 		skb_shinfo(skb)->gso_size = skb_gro_len(skb);
 	list_add(&skb->list, &gro_list->list);
 	ret = GRO_HELD;
-
-pull:
-	grow = skb_gro_offset(skb) - skb_headlen(skb);
-	if (grow > 0)
-		gro_pull_from_frag0(skb, grow);
 ok:
 	if (gro_list->count) {
-		if (!test_bit(bucket, &napi->gro_bitmask))
-			__set_bit(bucket, &napi->gro_bitmask);
-	} else if (test_bit(bucket, &napi->gro_bitmask)) {
-		__clear_bit(bucket, &napi->gro_bitmask);
+		if (!test_bit(bucket, &gro->bitmask))
+			__set_bit(bucket, &gro->bitmask);
+	} else if (test_bit(bucket, &gro->bitmask)) {
+		__clear_bit(bucket, &gro->bitmask);
 	}
 
 	return ret;
 
 normal:
 	ret = GRO_NORMAL;
-	goto pull;
+	gro_try_pull_from_frag0(skb);
+	goto ok;
 }
 
 struct packet_offload *gro_find_receive_by_type(__be16 type)
 {
-	struct list_head *offload_head = &offload_base;
+	struct list_head *offload_head = &net_hotdata.offload_base;
 	struct packet_offload *ptype;
 
 	list_for_each_entry_rcu(ptype, offload_head, list) {
@@ -595,7 +583,7 @@ EXPORT_SYMBOL(gro_find_receive_by_type);
 
 struct packet_offload *gro_find_complete_by_type(__be16 type)
 {
-	struct list_head *offload_head = &offload_base;
+	struct list_head *offload_head = &net_hotdata.offload_base;
 	struct packet_offload *ptype;
 
 	list_for_each_entry_rcu(ptype, offload_head, list) {
@@ -607,13 +595,12 @@ struct packet_offload *gro_find_complete_by_type(__be16 type)
 }
 EXPORT_SYMBOL(gro_find_complete_by_type);
 
-static gro_result_t napi_skb_finish(struct napi_struct *napi,
-				    struct sk_buff *skb,
-				    gro_result_t ret)
+static gro_result_t gro_skb_finish(struct gro_node *gro, struct sk_buff *skb,
+				   gro_result_t ret)
 {
 	switch (ret) {
 	case GRO_NORMAL:
-		gro_normal_one(napi, skb, 1);
+		gro_normal_one(gro, skb, 1);
 		break;
 
 	case GRO_MERGED_FREE:
@@ -622,7 +609,7 @@ static gro_result_t napi_skb_finish(struct napi_struct *napi,
 		else if (skb->fclone != SKB_FCLONE_UNAVAILABLE)
 			__kfree_skb(skb);
 		else
-			__kfree_skb_defer(skb);
+			__napi_kfree_skb(skb, SKB_CONSUMED);
 		break;
 
 	case GRO_HELD:
@@ -634,24 +621,26 @@ static gro_result_t napi_skb_finish(struct napi_struct *napi,
 	return ret;
 }
 
-gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
+gro_result_t gro_receive_skb(struct gro_node *gro, struct sk_buff *skb)
 {
 	gro_result_t ret;
 
-	skb_mark_napi_id(skb, napi);
+	__skb_mark_napi_id(skb, gro);
 	trace_napi_gro_receive_entry(skb);
 
 	skb_gro_reset_offset(skb, 0);
 
-	ret = napi_skb_finish(napi, skb, dev_gro_receive(napi, skb));
+	ret = gro_skb_finish(gro, skb, dev_gro_receive(gro, skb));
 	trace_napi_gro_receive_exit(ret);
 
 	return ret;
 }
-EXPORT_SYMBOL(napi_gro_receive);
+EXPORT_SYMBOL(gro_receive_skb);
 
 static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
 {
+	struct skb_shared_info *shinfo;
+
 	if (unlikely(skb->pfmemalloc)) {
 		consume_skb(skb);
 		return;
@@ -667,8 +656,13 @@ static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
 	skb->pkt_type = PACKET_HOST;
 
 	skb->encapsulation = 0;
-	skb_shinfo(skb)->gso_type = 0;
-	skb_shinfo(skb)->gso_size = 0;
+	skb->ip_summed = CHECKSUM_NONE;
+
+	shinfo = skb_shinfo(skb);
+	shinfo->gso_type = 0;
+	shinfo->gso_size = 0;
+	shinfo->hwtstamps.hwtstamp = 0;
+
 	if (unlikely(skb->slow_gro)) {
 		skb_orphan(skb);
 		skb_ext_reset(skb);
@@ -704,7 +698,7 @@ static gro_result_t napi_frags_finish(struct napi_struct *napi,
 		__skb_push(skb, ETH_HLEN);
 		skb->protocol = eth_type_trans(skb, skb->dev);
 		if (ret == GRO_NORMAL)
-			gro_normal_one(napi, skb, 1);
+			gro_normal_one(&napi->gro, skb, 1);
 		break;
 
 	case GRO_MERGED_FREE:
@@ -737,7 +731,7 @@ static struct sk_buff *napi_frags_skb(struct napi_struct *napi)
 	skb_reset_mac_header(skb);
 	skb_gro_reset_offset(skb, hlen);
 
-	if (unlikely(skb_gro_header_hard(skb, hlen))) {
+	if (unlikely(!skb_gro_may_pull(skb, hlen))) {
 		eth = skb_gro_header_slow(skb, hlen, 0);
 		if (unlikely(!eth)) {
 			net_warn_ratelimited("%s: dropping impossible skb from %s\n",
@@ -747,7 +741,10 @@ static struct sk_buff *napi_frags_skb(struct napi_struct *napi)
 		}
 	} else {
 		eth = (const struct ethhdr *)skb->data;
-		gro_pull_from_frag0(skb, hlen);
+
+		if (NAPI_GRO_CB(skb)->frag0 != skb->data)
+			gro_pull_from_frag0(skb, hlen);
+
 		NAPI_GRO_CB(skb)->frag0 += hlen;
 		NAPI_GRO_CB(skb)->frag0_len -= hlen;
 	}
@@ -770,7 +767,7 @@ gro_result_t napi_gro_frags(struct napi_struct *napi)
 
 	trace_napi_gro_frags_entry(skb);
 
-	ret = napi_frags_finish(napi, skb, dev_gro_receive(napi, skb));
+	ret = napi_frags_finish(napi, skb, dev_gro_receive(&napi->gro, skb));
 	trace_napi_gro_frags_exit(ret);
 
 	return ret;
@@ -802,3 +799,37 @@ __sum16 __skb_gro_checksum_complete(struct sk_buff *skb)
 	return sum;
 }
 EXPORT_SYMBOL(__skb_gro_checksum_complete);
+
+void gro_init(struct gro_node *gro)
+{
+	for (u32 i = 0; i < GRO_HASH_BUCKETS; i++) {
+		INIT_LIST_HEAD(&gro->hash[i].list);
+		gro->hash[i].count = 0;
+	}
+
+	gro->bitmask = 0;
+	gro->cached_napi_id = 0;
+
+	INIT_LIST_HEAD(&gro->rx_list);
+	gro->rx_count = 0;
+}
+
+void gro_cleanup(struct gro_node *gro)
+{
+	struct sk_buff *skb, *n;
+
+	for (u32 i = 0; i < GRO_HASH_BUCKETS; i++) {
+		list_for_each_entry_safe(skb, n, &gro->hash[i].list, list)
+			kfree_skb(skb);
+
+		gro->hash[i].count = 0;
+	}
+
+	gro->bitmask = 0;
+	gro->cached_napi_id = 0;
+
+	list_for_each_entry_safe(skb, n, &gro->rx_list, list)
+		kfree_skb(skb);
+
+	gro->rx_count = 0;
+}