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[SK_BUFF]: Introduce skb_set_transport_header

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For the cases where the transport header is being set to a offset from
skb->data.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-03-13 13:51:52 -03:00 committed by David S. Miller
parent ea2ae17d64
commit 967b05f64e
12 changed files with 33 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/linux/skbuff.h
View File

@ -962,6 +962,12 @@ static inline void skb_reset_transport_header(struct sk_buff *skb)
skb->h.raw = skb->data;
}
static inline void skb_set_transport_header(struct sk_buff *skb,
const int offset)
{
skb->h.raw = skb->data + offset;
}
static inline int skb_transport_offset(const struct sk_buff *skb)
{
return skb->h.raw - skb->data;

20
net/ax25/af_ax25.c
View File

@ -1425,7 +1425,6 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
struct sockaddr_ax25 sax;
struct sk_buff *skb;
ax25_digi dtmp, *dp;
unsigned char *asmptr;
ax25_cb *ax25;
size_t size;
int lv, err, addr_len = msg->msg_namelen;
@ -1551,10 +1550,8 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
skb_reset_network_header(skb);
/* Add the PID if one is not supplied by the user in the skb */
if (!ax25->pidincl) {
asmptr = skb_push(skb, 1);
*asmptr = sk->sk_protocol;
}
if (!ax25->pidincl)
*skb_push(skb, 1) = sk->sk_protocol;
SOCK_DEBUG(sk, "AX.25: Transmitting buffer\n");
@ -1573,7 +1570,7 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
goto out;
}
asmptr = skb_push(skb, 1 + ax25_addr_size(dp));
skb_push(skb, 1 + ax25_addr_size(dp));
SOCK_DEBUG(sk, "Building AX.25 Header (dp=%p).\n", dp);
@ -1581,17 +1578,16 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
SOCK_DEBUG(sk, "Num digipeaters=%d\n", dp->ndigi);
/* Build an AX.25 header */
asmptr += (lv = ax25_addr_build(asmptr, &ax25->source_addr,
&sax.sax25_call, dp,
AX25_COMMAND, AX25_MODULUS));
lv = ax25_addr_build(skb->data, &ax25->source_addr, &sax.sax25_call,
dp, AX25_COMMAND, AX25_MODULUS);
SOCK_DEBUG(sk, "Built header (%d bytes)\n",lv);
skb->h.raw = asmptr;
skb_set_transport_header(skb, lv);
SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, asmptr);
SOCK_DEBUG(sk, "base=%p pos=%p\n", skb->data, skb->h.raw);
*asmptr = AX25_UI;
*skb->h.raw = AX25_UI;
/* Datagram frames go straight out of the door as UI */
ax25_queue_xmit(skb, ax25->ax25_dev->dev);

2
net/ax25/ax25_in.c
View File

@ -233,7 +233,7 @@ static int ax25_rcv(struct sk_buff *skb, struct net_device *dev,
/* UI frame - bypass LAPB processing */
if ((*skb->data & ~0x10) == AX25_UI && dp.lastrepeat + 1 == dp.ndigi) {
skb->h.raw = skb->data + 2; /* skip control and pid */
skb_set_transport_header(skb, 2); /* skip control and pid */
ax25_send_to_raw(&dest, skb, skb->data[1]);

3
net/ipv4/esp4.c
View File

@ -261,7 +261,8 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb)
iph->protocol = nexthdr[1];
pskb_trim(skb, skb->len - alen - padlen - 2);
skb->h.raw = __skb_pull(skb, sizeof(*esph) + esp->conf.ivlen) - ihl;
__skb_pull(skb, sizeof(*esph) + esp->conf.ivlen);
skb_set_transport_header(skb, -ihl);
return 0;

19
net/ipv4/ip_output.c
View File

@ -593,7 +593,7 @@ slow_path:
skb_reserve(skb2, ll_rs);
skb_put(skb2, len + hlen);
skb_reset_network_header(skb2);
skb2->h.raw = skb2->data + hlen;
skb2->h.raw = skb2->nh.raw + hlen;
/*
* Charge the memory for the fragment to any owner
@ -724,7 +724,7 @@ static inline int ip_ufo_append_data(struct sock *sk,
skb_reset_network_header(skb);
/* initialize protocol header pointer */
skb->h.raw = skb->data + fragheaderlen;
skb->h.raw = skb->nh.raw + fragheaderlen;
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum = 0;
@ -1099,8 +1099,6 @@ ssize_t ip_append_page(struct sock *sk, struct page *page,
}
if (len <= 0) {
struct sk_buff *skb_prev;
char *data;
struct iphdr *iph;
int alloclen;
skb_prev = skb;
@ -1123,16 +1121,15 @@ ssize_t ip_append_page(struct sock *sk, struct page *page,
/*
* Find where to start putting bytes.
*/
data = skb_put(skb, fragheaderlen + fraggap);
skb_put(skb, fragheaderlen + fraggap);
skb_reset_network_header(skb);
iph = ip_hdr(skb);
data += fragheaderlen;
skb->h.raw = data;
skb->h.raw = skb->nh.raw + fragheaderlen;
if (fraggap) {
skb->csum = skb_copy_and_csum_bits(
skb_prev, maxfraglen,
data, fraggap, 0);
skb->csum = skb_copy_and_csum_bits(skb_prev,
maxfraglen,
skb->h.raw,
fraggap, 0);
skb_prev->csum = csum_sub(skb_prev->csum,
skb->csum);
pskb_trim_unique(skb_prev, maxfraglen);

2
net/ipv4/tcp_input.c
View File

@ -3636,7 +3636,7 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
skb_set_mac_header(nskb, skb_mac_header(skb) - skb->head);
skb_set_network_header(nskb,
skb_network_header(skb) - skb->head);
nskb->h.raw = nskb->data + (skb->h.raw - skb->head);
skb_set_transport_header(nskb, skb->h.raw - skb->head);
skb_reserve(nskb, header);
memcpy(nskb->head, skb->head, header);

2
net/ipv6/ah6.c
View File

@ -247,7 +247,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
memcpy(tmp_base, top_iph, sizeof(tmp_base));
tmp_ext = NULL;
extlen = skb->h.raw - (unsigned char *)(top_iph + 1);
extlen = skb_transport_offset(skb) + sizeof(struct ipv6hdr);
if (extlen) {
extlen += sizeof(*tmp_ext);
tmp_ext = kmalloc(extlen, GFP_ATOMIC);

4
net/ipv6/esp6.c
View File

@ -228,8 +228,8 @@ static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
ret = nexthdr[1];
}
skb->h.raw = __skb_pull(skb, sizeof(*esph) + esp->conf.ivlen) - hdr_len;
__skb_pull(skb, sizeof(*esph) + esp->conf.ivlen);
skb_set_transport_header(skb, -hdr_len);
out:
return ret;
}

2
net/ipv6/netfilter/nf_conntrack_reasm.c
View File

@ -785,7 +785,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb)
goto ret_orig;
}
clone->h.raw = clone->data + fhoff;
skb_set_transport_header(clone, fhoff);
hdr = ipv6_hdr(clone);
fhdr = (struct frag_hdr *)clone->h.raw;

2
net/ipv6/xfrm6_mode_beet.c
View File

@ -42,7 +42,7 @@ static int xfrm6_beet_output(struct xfrm_state *x, struct sk_buff *skb)
hdr_len = ip6_find_1stfragopt(skb, &prevhdr);
skb->nh.raw = prevhdr - x->props.header_len;
skb->h.raw = skb->data + hdr_len;
skb_set_transport_header(skb, hdr_len);
memmove(skb->data, iph, hdr_len);
skb_reset_network_header(skb);

2
net/ipv6/xfrm6_mode_ro.c
View File

@ -54,7 +54,7 @@ static int xfrm6_ro_output(struct xfrm_state *x, struct sk_buff *skb)
hdr_len = x->type->hdr_offset(x, skb, &prevhdr);
skb->nh.raw = prevhdr - x->props.header_len;
skb->h.raw = skb->data + hdr_len;
skb_set_transport_header(skb, hdr_len);
memmove(skb->data, iph, hdr_len);
return 0;
}

2
net/ipv6/xfrm6_mode_transport.c
View File

@ -36,7 +36,7 @@ static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
hdr_len = x->type->hdr_offset(x, skb, &prevhdr);
skb->nh.raw = prevhdr - x->props.header_len;
skb->h.raw = skb->data + hdr_len;
skb_set_transport_header(skb, hdr_len);
memmove(skb->data, iph, hdr_len);
return 0;
}