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net: ipv4: convert to SKB frag APIs

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Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: "Pekka Savola (ipv6)" <pekkas@netcore.fi>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ian Campbell 2011-08-22 23:44:59 +00:00 committed by David S. Miller
parent ea2ab69379
commit aff65da0f1
4 changed files with 8 additions and 6 deletions
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2
net/ipv4/inet_lro.c
View File

@ -433,7 +433,7 @@ static struct sk_buff *__lro_proc_segment(struct net_lro_mgr *lro_mgr,
if (!lro_mgr->get_frag_header || if (!lro_mgr->get_frag_header ||
lro_mgr->get_frag_header(frags, (void *)&mac_hdr, (void *)&iph, lro_mgr->get_frag_header(frags, (void *)&mac_hdr, (void *)&iph,
(void *)&tcph, &flags, priv)) { (void *)&tcph, &flags, priv)) {
mac_hdr = page_address(frags->page) + frags->page_offset; mac_hdr = skb_frag_address(frags);
goto out1; goto out1;
} }

7
net/ipv4/ip_output.c
View File

@ -989,13 +989,13 @@ static int __ip_append_data(struct sock *sk,
if (page && (left = PAGE_SIZE - off) > 0) { if (page && (left = PAGE_SIZE - off) > 0) {
if (copy >= left) if (copy >= left)
copy = left; copy = left;
if (page != frag->page) { if (page != skb_frag_page(frag)) {
if (i == MAX_SKB_FRAGS) { if (i == MAX_SKB_FRAGS) {
err = -EMSGSIZE; err = -EMSGSIZE;
goto error; goto error;
} }
get_page(page);
skb_fill_page_desc(skb, i, page, off, 0); skb_fill_page_desc(skb, i, page, off, 0);
skb_frag_ref(skb, i);
frag = &skb_shinfo(skb)->frags[i]; frag = &skb_shinfo(skb)->frags[i];
} }
} else if (i < MAX_SKB_FRAGS) { } else if (i < MAX_SKB_FRAGS) {
@ -1015,7 +1015,8 @@ static int __ip_append_data(struct sock *sk,
err = -EMSGSIZE; err = -EMSGSIZE;
goto error; goto error;
} }
if (getfrag(from, page_address(frag->page)+frag->page_offset+frag->size, offset, copy, skb->len, skb) < 0) { if (getfrag(from, skb_frag_address(frag)+frag->size,
offset, copy, skb->len, skb) < 0) {
err = -EFAULT; err = -EFAULT;
goto error; goto error;
} }

3
net/ipv4/tcp.c
View File

@ -3035,7 +3035,8 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp,
for (i = 0; i < shi->nr_frags; ++i) { for (i = 0; i < shi->nr_frags; ++i) {
const struct skb_frag_struct *f = &shi->frags[i]; const struct skb_frag_struct *f = &shi->frags[i];
sg_set_page(&sg, f->page, f->size, f->page_offset); struct page *page = skb_frag_page(f);
sg_set_page(&sg, page, f->size, f->page_offset);
if (crypto_hash_update(desc, &sg, f->size)) if (crypto_hash_update(desc, &sg, f->size))
return 1; return 1;
} }

2
net/ipv4/tcp_output.c
View File

@ -1095,7 +1095,7 @@ static void __pskb_trim_head(struct sk_buff *skb, int len)
k = 0; k = 0;
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
if (skb_shinfo(skb)->frags[i].size <= eat) { if (skb_shinfo(skb)->frags[i].size <= eat) {
put_page(skb_shinfo(skb)->frags[i].page); skb_frag_unref(skb, i);
eat -= skb_shinfo(skb)->frags[i].size; eat -= skb_shinfo(skb)->frags[i].size;
} else { } else {
skb_shinfo(skb)->frags[k] = skb_shinfo(skb)->frags[i]; skb_shinfo(skb)->frags[k] = skb_shinfo(skb)->frags[i];