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networking: make skb_pull & friends return void pointers

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It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions return void * and remove all the casts across
the tree, adding a (u8 *) cast only where the unsigned char pointer
was used directly, all done with the following spatch:

    @@
    expression SKB, LEN;
    typedef u8;
    identifier fn = {
            skb_pull,
            __skb_pull,
            skb_pull_inline,
            __pskb_pull_tail,
            __pskb_pull,
            pskb_pull
    };
    @@
    - *(fn(SKB, LEN))
    + *(u8 *)fn(SKB, LEN)

    @@
    expression E, SKB, LEN;
    identifier fn = {
            skb_pull,
            __skb_pull,
            skb_pull_inline,
            __pskb_pull_tail,
            __pskb_pull,
            pskb_pull
    };
    type T;
    @@
    - E = ((T *)(fn(SKB, LEN)))
    + E = fn(SKB, LEN)

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Johannes Berg 2017-06-16 14:29:22 +02:00 • committed by David S. Miller
commit af72868b90
13 changed files with 29 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/scsi/fnic/fnic_fcs.c
View file

@ -640,7 +640,7 @@ static inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb)
eh = (struct ethhdr *)skb->data;
if (eh->h_proto == htons(ETH_P_8021Q)) {
memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
eh = skb_pull(skb, VLAN_HLEN);
skb_reset_mac_header(skb);
}
if (eh->h_proto == htons(ETH_P_FIP)) {

2
drivers/scsi/qedf/qedf_main.c
View file

@ -2117,7 +2117,7 @@ static void qedf_ll2_process_skb(struct work_struct *work)
/* Undo VLAN encapsulation */
if (eh->h_proto == htons(ETH_P_8021Q)) {
memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
eh = skb_pull(skb, VLAN_HLEN);
skb_reset_mac_header(skb);
}