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ipv4: rename ip_options_echo to __ip_options_echo()

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ip_options_echo() assumes struct ip_options is provided in &IPCB(skb)->opt
Lets break this assumption, but provide a helper to not change all call points.

ip_send_unicast_reply() gets a new struct ip_options pointer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2014-09-27 09:50:55 -07:00
committed by David S. Miller
parent ff04a771ad
commit 24a2d43d88
4 changed files with 25 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/ipv4/ip_options.c
+2 -4
View File
@@ -87,17 +87,15 @@ void ip_options_build(struct sk_buff *skb, struct ip_options *opt,
* NOTE: dopt cannot point to skb.
*/
int ip_options_echo(struct ip_options *dopt, struct sk_buff *skb)
int __ip_options_echo(struct ip_options *dopt, struct sk_buff *skb,
const struct ip_options *sopt)
{
const struct ip_options *sopt;
unsigned char *sptr, *dptr;
int soffset, doffset;
int optlen;
memset(dopt, 0, sizeof(struct ip_options));
sopt = &(IPCB(skb)->opt);
if (sopt->optlen == 0)
return 0;
net/ipv4/ip_output.c
+5 -3
View File
@@ -1522,8 +1522,10 @@ static DEFINE_PER_CPU(struct inet_sock, unicast_sock) = {
.uc_ttl = -1,
};
void ip_send_unicast_reply(struct net *net, struct sk_buff *skb, __be32 daddr,
__be32 saddr, const struct ip_reply_arg *arg,
void ip_send_unicast_reply(struct net *net, struct sk_buff *skb,
const struct ip_options *sopt,
__be32 daddr, __be32 saddr,
const struct ip_reply_arg *arg,
unsigned int len)
{
struct ip_options_data replyopts;
@@ -1534,7 +1536,7 @@ void ip_send_unicast_reply(struct net *net, struct sk_buff *skb, __be32 daddr,
struct sock *sk;
struct inet_sock *inet;
if (ip_options_echo(&replyopts.opt.opt, skb))
if (__ip_options_echo(&replyopts.opt.opt, skb, sopt))
return;
ipc.addr = daddr;
net/ipv4/tcp_ipv4.c
+6 -4
View File
@@ -681,8 +681,9 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
net = dev_net(skb_dst(skb)->dev);
arg.tos = ip_hdr(skb)->tos;
ip_send_unicast_reply(net, skb, ip_hdr(skb)->saddr,
ip_hdr(skb)->daddr, &arg, arg.iov[0].iov_len);
ip_send_unicast_reply(net, skb, &TCP_SKB_CB(skb)->header.h4.opt,
ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
&arg, arg.iov[0].iov_len);
TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
TCP_INC_STATS_BH(net, TCP_MIB_OUTRSTS);
@@ -764,8 +765,9 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
if (oif)
arg.bound_dev_if = oif;
arg.tos = tos;
ip_send_unicast_reply(net, skb, ip_hdr(skb)->saddr,
ip_hdr(skb)->daddr, &arg, arg.iov[0].iov_len);
ip_send_unicast_reply(net, skb, &TCP_SKB_CB(skb)->header.h4.opt,
ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
&arg, arg.iov[0].iov_len);
TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
}