1 files changed, 24 insertions, 22 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index d788a9845762..fdc065dc869a 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2838,41 +2838,42 @@ EXPORT_SYMBOL_GPL(skb_pull_rcsum);
 /**
 *      skb_segment - Perform protocol segmentation on skb.
- *      @skb: buffer to segment
+ *      @head_skb: buffer to segment
 *      @features: features for the output path (see dev->features)
 *
 *      This function performs segmentation on the given skb.  It returns
 *      a pointer to the first in a list of new skbs for the segments.
 *      In case of error it returns ERR_PTR(err).
 */
-struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
+struct sk_buff *skb_segment(struct sk_buff *head_skb,
+                            netdev_features_t features)
 {
        struct sk_buff *segs = NULL;
        struct sk_buff *tail = NULL;
-        struct sk_buff *fskb = skb_shinfo(skb)->frag_list;
+        struct sk_buff *fskb = skb_shinfo(head_skb)->frag_list;
-        skb_frag_t *frag = skb_shinfo(skb)->frags;
+        skb_frag_t *frag = skb_shinfo(head_skb)->frags;
-        unsigned int mss = skb_shinfo(skb)->gso_size;
+        unsigned int mss = skb_shinfo(head_skb)->gso_size;
-        unsigned int doffset = skb->data - skb_mac_header(skb);
+        unsigned int doffset = head_skb->data - skb_mac_header(head_skb);
        unsigned int offset = doffset;
-        unsigned int tnl_hlen = skb_tnl_header_len(skb);
+        unsigned int tnl_hlen = skb_tnl_header_len(head_skb);
        unsigned int headroom;
        unsigned int len;
        __be16 proto;
        bool csum;
        int sg = !!(features & NETIF_F_SG);
-        int nfrags = skb_shinfo(skb)->nr_frags;
+        int nfrags = skb_shinfo(head_skb)->nr_frags;
        int err = -ENOMEM;
        int i = 0;
        int pos;
-        proto = skb_network_protocol(skb);
+        proto = skb_network_protocol(head_skb);
        if (unlikely(!proto))
                return ERR_PTR(-EINVAL);
        csum = !!can_checksum_protocol(features, proto);
-        __skb_push(skb, doffset);
+        __skb_push(head_skb, doffset);
-        headroom = skb_headroom(skb);
+        headroom = skb_headroom(head_skb);
-        pos = skb_headlen(skb);
+        pos = skb_headlen(head_skb);
        do {
                struct sk_buff *nskb;
@@ -2880,11 +2881,11 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
                int hsize;
                int size;
-                len = skb->len - offset;
+                len = head_skb->len - offset;
                if (len > mss)
                        len = mss;
-                hsize = skb_headlen(skb) - offset;
+                hsize = skb_headlen(head_skb) - offset;
                if (hsize < 0)
                        hsize = 0;
                if (hsize > len || !sg)
@@ -2933,7 +2934,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
                        __skb_push(nskb, doffset);
                } else {
                        nskb = __alloc_skb(hsize + doffset + headroom,
-                                           GFP_ATOMIC, skb_alloc_rx_flag(skb),
+                                           GFP_ATOMIC, skb_alloc_rx_flag(head_skb),
                                           NUMA_NO_NODE);
                        if (unlikely(!nskb))
@@ -2949,12 +2950,12 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
                        segs = nskb;
                tail = nskb;
-                __copy_skb_header(nskb, skb);
+                __copy_skb_header(nskb, head_skb);
-                nskb->mac_len = skb->mac_len;
+                nskb->mac_len = head_skb->mac_len;
                skb_headers_offset_update(nskb, skb_headroom(nskb) - headroom);
-                skb_copy_from_linear_data_offset(skb, -tnl_hlen,
+                skb_copy_from_linear_data_offset(head_skb, -tnl_hlen,
                                                 nskb->data - tnl_hlen,
                                                 doffset + tnl_hlen);
@@ -2963,7 +2964,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
                if (!sg) {
                        nskb->ip_summed = CHECKSUM_NONE;
-                        nskb->csum = skb_copy_and_csum_bits(skb, offset,
+                        nskb->csum = skb_copy_and_csum_bits(head_skb, offset,
                                                            skb_put(nskb, len),
                                                            len, 0);
                        continue;
@@ -2971,10 +2972,11 @@ struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features)
                nskb_frag = skb_shinfo(nskb)->frags;
-                skb_copy_from_linear_data_offset(skb, offset,
+                skb_copy_from_linear_data_offset(head_skb, offset,
                                                 skb_put(nskb, hsize), hsize);
-                skb_shinfo(nskb)->tx_flags = skb_shinfo(skb)->tx_flags & SKBTX_SHARED_FRAG;
+                skb_shinfo(nskb)->tx_flags = skb_shinfo(head_skb)->tx_flags &
+                        SKBTX_SHARED_FRAG;
                while (pos < offset + len) {
                        if (i >= nfrags) {
@@ -3031,7 +3033,7 @@ perform_csum_check:
                                                  nskb->len - doffset, 0);
                        nskb->ip_summed = CHECKSUM_NONE;
                }
-        } while ((offset += len) < skb->len);
+        } while ((offset += len) < head_skb->len);
        return segs;